From 16ab5af5687b0a13cc474d7b4ca040cf9266f249 Mon Sep 17 00:00:00 2001 From: Sevan Janiyan Date: Sun, 18 Nov 2018 02:11:42 +0000 Subject: [PATCH] external/public-domain/sqlite - Import SQLite 3.17.0 Syncs with NetBSD-8 --- external/public-domain/sqlite/Makefile | 4 +- external/public-domain/sqlite/Makefile.inc | 7 +- external/public-domain/sqlite/README | 2 + .../sqlite/{dist => bin}/sqlite3.1 | 2 +- external/public-domain/sqlite/dist/shell.c | 4408 +- external/public-domain/sqlite/dist/sqlite3.c | 102468 +++++++++++---- external/public-domain/sqlite/dist/sqlite3.h | 4201 +- .../public-domain/sqlite/dist/sqlite3ext.h | 93 +- external/public-domain/sqlite/lib/Makefile | 19 +- .../public-domain/sqlite/lib/shlib_version | 4 +- external/public-domain/sqlite/man/Makefile | 215 + .../sqlite/man/SQLITE_ACCESS_EXISTS.3 | 31 + .../sqlite/man/SQLITE_CHANGESET_DATA.3 | 59 + .../sqlite/man/SQLITE_CHANGESET_OMIT.3 | 39 + .../sqlite/man/SQLITE_CHECKPOINT_PASSIVE.3 | 22 + 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external/public-domain/sqlite/man/sqlite3session_isempty.3 create mode 100644 external/public-domain/sqlite/man/sqlite3session_patchset.3 create mode 100644 external/public-domain/sqlite/man/sqlite3session_table_filter.3 create mode 100644 external/public-domain/sqlite/man/sqlite_int64.3 create mode 100644 external/public-domain/sqlite/sqlite2mdoc/LICENSE.md create mode 100644 external/public-domain/sqlite/sqlite2mdoc/Makefile create mode 100644 external/public-domain/sqlite/sqlite2mdoc/README.md create mode 100644 external/public-domain/sqlite/sqlite2mdoc/main.c create mode 100644 external/public-domain/sqlite/sqlite2mdoc/sqlite2mdoc.1 diff --git a/external/public-domain/sqlite/Makefile b/external/public-domain/sqlite/Makefile index b9a4b1bc2..960cb8dc4 100644 --- a/external/public-domain/sqlite/Makefile +++ b/external/public-domain/sqlite/Makefile @@ -1,5 +1,5 @@ -# $NetBSD: Makefile,v 1.1 2011/10/13 21:40:27 joerg Exp $ +# $NetBSD: Makefile,v 1.2 2016/03/30 21:31:44 christos Exp $ -SUBDIR+= lib .WAIT bin +SUBDIR+= lib .WAIT bin man .include diff --git a/external/public-domain/sqlite/Makefile.inc b/external/public-domain/sqlite/Makefile.inc index 09616af0a..af8196b3f 100644 --- a/external/public-domain/sqlite/Makefile.inc +++ b/external/public-domain/sqlite/Makefile.inc @@ -1,4 +1,4 @@ -# $NetBSD: Makefile.inc,v 1.5 2012/06/01 20:28:02 wiz Exp $ +# $NetBSD: Makefile.inc,v 1.7 2016/10/13 18:11:19 martin Exp $ WARNS= 2 @@ -14,12 +14,14 @@ CPPFLAGS+= \ -DHAVE_STDINT_H=1 \ -DHAVE_STRERROR_R=1 \ -DHAVE_USLEEP=1 \ + -DHAVE_SYS_ENDIAN_H=1 \ -DSQLITE_ENABLE_COLUMN_METADATA \ -DSQLITE_ENABLE_FTS3_PARENTHESIS \ -DSQLITE_ENABLE_FTS4 \ -DSQLITE_ENABLE_LOAD_EXTENSION \ -DSQLITE_ENABLE_UNLOCK_NOTIFY \ - -DSQLITE_HAVE_ISNAN + -DSQLITE_HAVE_ISNAN \ + -DSQLITE_MAX_WORKER_THREADS=0 .if defined(__MINIX) CPPFLAGS+= \ @@ -27,4 +29,5 @@ CPPFLAGS+= \ -DSQLITE_OMIT_WAL .endif # defined(__MINIX) + CWARNFLAGS+= -Wno-shadow -Wno-unused diff --git a/external/public-domain/sqlite/README b/external/public-domain/sqlite/README new file mode 100644 index 000000000..7e79f4a90 --- /dev/null +++ b/external/public-domain/sqlite/README @@ -0,0 +1,2 @@ +# $NetBSD: README,v 1.1 2016/03/30 21:31:44 christos Exp $ +To regenerate the man pages, build and run sqlite2mdoc < /usr/include/sqlite3.h diff --git a/external/public-domain/sqlite/dist/sqlite3.1 b/external/public-domain/sqlite/bin/sqlite3.1 similarity index 98% rename from external/public-domain/sqlite/dist/sqlite3.1 rename to external/public-domain/sqlite/bin/sqlite3.1 index 80da46e18..f25af3656 100644 --- a/external/public-domain/sqlite/dist/sqlite3.1 +++ b/external/public-domain/sqlite/bin/sqlite3.1 @@ -1,4 +1,4 @@ -.\" $NetBSD: sqlite3.1,v 1.5 2012/12/21 19:26:39 njoly Exp $ +.\" $NetBSD: sqlite3.1,v 1.1 2017/03/11 16:29:51 christos Exp $ .Dd December 16, 2012 .Dt SQLITE3 1 .Os diff --git a/external/public-domain/sqlite/dist/shell.c b/external/public-domain/sqlite/dist/shell.c index 1c4c4ad3e..0c944c14e 100644 --- a/external/public-domain/sqlite/dist/shell.c +++ b/external/public-domain/sqlite/dist/shell.c @@ -17,6 +17,20 @@ #define _CRT_SECURE_NO_WARNINGS #endif +/* +** If requested, include the SQLite compiler options file for MSVC. +*/ +#if defined(INCLUDE_MSVC_H) +#include "msvc.h" +#endif + +/* +** No support for loadable extensions in VxWorks. +*/ +#if (defined(__RTP__) || defined(_WRS_KERNEL)) && !SQLITE_OMIT_LOAD_EXTENSION +# define SQLITE_OMIT_LOAD_EXTENSION 1 +#endif + /* ** Enable large-file support for fopen() and friends on unix. */ @@ -33,6 +47,9 @@ #include #include #include "sqlite3.h" +#if SQLITE_USER_AUTHENTICATION +# include "sqlite3userauth.h" +#endif #include #include @@ -45,37 +62,65 @@ # include #endif -#ifdef HAVE_EDITLINE -# include -#endif -#if defined(HAVE_READLINE) && HAVE_READLINE==1 +#if HAVE_READLINE # include # include #endif -#if !defined(HAVE_EDITLINE) && (!defined(HAVE_READLINE) || HAVE_READLINE!=1) -# define add_history(X) -# define read_history(X) -# define write_history(X) -# define stifle_history(X) + +#if HAVE_EDITLINE +# include #endif +#if HAVE_EDITLINE || HAVE_READLINE + +# define shell_add_history(X) add_history(X) +# define shell_read_history(X) read_history(X) +# define shell_write_history(X) write_history(X) +# define shell_stifle_history(X) stifle_history(X) +# define shell_readline(X) readline(X) + +#elif HAVE_LINENOISE + +# include "linenoise.h" +# define shell_add_history(X) linenoiseHistoryAdd(X) +# define shell_read_history(X) linenoiseHistoryLoad(X) +# define shell_write_history(X) linenoiseHistorySave(X) +# define shell_stifle_history(X) linenoiseHistorySetMaxLen(X) +# define shell_readline(X) linenoise(X) + +#else + +# define shell_read_history(X) +# define shell_write_history(X) +# define shell_stifle_history(X) + +# define SHELL_USE_LOCAL_GETLINE 1 +#endif + + #if defined(_WIN32) || defined(WIN32) # include -#define isatty(h) _isatty(h) -#define access(f,m) _access((f),(m)) -#undef popen -#define popen _popen -#undef pclose -#define pclose _pclose +# include +# define isatty(h) _isatty(h) +# ifndef access +# define access(f,m) _access((f),(m)) +# endif +# undef popen +# define popen _popen +# undef pclose +# define pclose _pclose #else -/* Make sure isatty() has a prototype. -*/ -extern int isatty(int); + /* Make sure isatty() has a prototype. */ + extern int isatty(int); -/* popen and pclose are not C89 functions and so are sometimes omitted from -** the header */ -extern FILE *popen(const char*,const char*); -extern int pclose(FILE*); +# if !defined(__RTP__) && !defined(_WRS_KERNEL) + /* popen and pclose are not C89 functions and so are + ** sometimes omitted from the header */ + extern FILE *popen(const char*,const char*); + extern int pclose(FILE*); +# else +# define SQLITE_OMIT_POPEN 1 +# endif #endif #if defined(_WIN32_WCE) @@ -91,6 +136,36 @@ extern int pclose(FILE*); #define IsDigit(X) isdigit((unsigned char)X) #define ToLower(X) (char)tolower((unsigned char)X) +#if defined(_WIN32) || defined(WIN32) +#include + +/* string conversion routines only needed on Win32 */ +extern char *sqlite3_win32_unicode_to_utf8(LPCWSTR); +extern char *sqlite3_win32_mbcs_to_utf8_v2(const char *, int); +extern char *sqlite3_win32_utf8_to_mbcs_v2(const char *, int); +extern LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText); +#endif + +/* On Windows, we normally run with output mode of TEXT so that \n characters +** are automatically translated into \r\n. However, this behavior needs +** to be disabled in some cases (ex: when generating CSV output and when +** rendering quoted strings that contain \n characters). The following +** routines take care of that. +*/ +#if defined(_WIN32) || defined(WIN32) +static void setBinaryMode(FILE *file, int isOutput){ + if( isOutput ) fflush(file); + _setmode(_fileno(file), _O_BINARY); +} +static void setTextMode(FILE *file, int isOutput){ + if( isOutput ) fflush(file); + _setmode(_fileno(file), _O_TEXT); +} +#else +# define setBinaryMode(X,Y) +# define setTextMode(X,Y) +#endif + /* True if the timer is enabled */ static int enableTimer = 0; @@ -100,7 +175,7 @@ static sqlite3_int64 timeOfDay(void){ static sqlite3_vfs *clockVfs = 0; sqlite3_int64 t; if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0); - if( clockVfs->iVersion>=1 && clockVfs->xCurrentTimeInt64!=0 ){ + if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){ clockVfs->xCurrentTimeInt64(clockVfs, &t); }else{ double r; @@ -110,11 +185,19 @@ static sqlite3_int64 timeOfDay(void){ return t; } -#if !defined(_WIN32) && !defined(WIN32) && !defined(_WRS_KERNEL) \ - && !defined(__minux) +#if !defined(_WIN32) && !defined(WIN32) && !defined(__minux) #include #include +/* VxWorks does not support getrusage() as far as we can determine */ +#if defined(_WRS_KERNEL) || defined(__RTP__) +struct rusage { + struct timeval ru_utime; /* user CPU time used */ + struct timeval ru_stime; /* system CPU time used */ +}; +#define getrusage(A,B) memset(B,0,sizeof(*B)) +#endif + /* Saved resource information for the beginning of an operation */ static struct rusage sBegin; /* CPU time at start */ static sqlite3_int64 iBegin; /* Wall-clock time at start */ @@ -131,7 +214,7 @@ static void beginTimer(void){ /* Return the difference of two time_structs in seconds */ static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ - return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + + return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + (double)(pEnd->tv_sec - pStart->tv_sec); } @@ -140,8 +223,8 @@ static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ */ static void endTimer(void){ if( enableTimer ){ - struct rusage sEnd; sqlite3_int64 iEnd = timeOfDay(); + struct rusage sEnd; getrusage(RUSAGE_SELF, &sEnd); printf("Run Time: real %.3f user %f sys %f\n", (iEnd - iBegin)*0.001, @@ -156,14 +239,13 @@ static void endTimer(void){ #elif (defined(_WIN32) || defined(WIN32)) -#include - /* Saved resource information for the beginning of an operation */ static HANDLE hProcess; static FILETIME ftKernelBegin; static FILETIME ftUserBegin; static sqlite3_int64 ftWallBegin; -typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME); +typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, + LPFILETIME, LPFILETIME); static GETPROCTIMES getProcessTimesAddr = NULL; /* @@ -174,19 +256,20 @@ static int hasTimer(void){ if( getProcessTimesAddr ){ return 1; } else { - /* GetProcessTimes() isn't supported in WIN95 and some other Windows versions. - ** See if the version we are running on has it, and if it does, save off - ** a pointer to it and the current process handle. + /* GetProcessTimes() isn't supported in WIN95 and some other Windows + ** versions. See if the version we are running on has it, and if it + ** does, save off a pointer to it and the current process handle. */ hProcess = GetCurrentProcess(); if( hProcess ){ HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); if( NULL != hinstLib ){ - getProcessTimesAddr = (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); + getProcessTimesAddr = + (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); if( NULL != getProcessTimesAddr ){ return 1; } - FreeLibrary(hinstLib); + FreeLibrary(hinstLib); } } } @@ -199,7 +282,8 @@ static int hasTimer(void){ static void beginTimer(void){ if( enableTimer && getProcessTimesAddr ){ FILETIME ftCreation, ftExit; - getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelBegin, &ftUserBegin); + getProcessTimesAddr(hProcess,&ftCreation,&ftExit, + &ftKernelBegin,&ftUserBegin); ftWallBegin = timeOfDay(); } } @@ -218,7 +302,7 @@ static void endTimer(void){ if( enableTimer && getProcessTimesAddr){ FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; sqlite3_int64 ftWallEnd = timeOfDay(); - getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelEnd, &ftUserEnd); + getProcessTimesAddr(hProcess,&ftCreation,&ftExit,&ftKernelEnd,&ftUserEnd); printf("Run Time: real %.3f user %f sys %f\n", (ftWallEnd - ftWallBegin)*0.001, timeDiff(&ftUserBegin, &ftUserEnd), @@ -231,7 +315,7 @@ static void endTimer(void){ #define HAS_TIMER hasTimer() #else -#define BEGIN_TIMER +#define BEGIN_TIMER #define END_TIMER #define HAS_TIMER 0 #endif @@ -253,12 +337,19 @@ static int bail_on_error = 0; */ static int stdin_is_interactive = 1; +/* +** On Windows systems we have to know if standard output is a console +** in order to translate UTF-8 into MBCS. The following variable is +** true if translation is required. +*/ +static int stdout_is_console = 1; + /* ** The following is the open SQLite database. We make a pointer ** to this database a static variable so that it can be accessed ** by the SIGINT handler to interrupt database processing. */ -static sqlite3 *db = 0; +static sqlite3 *globalDb = 0; /* ** True if an interrupt (Control-C) has been received. @@ -278,6 +369,38 @@ static char *Argv0; static char mainPrompt[20]; /* First line prompt. default: "sqlite> "*/ static char continuePrompt[20]; /* Continuation prompt. default: " ...> " */ +/* +** Render output like fprintf(). Except, if the output is going to the +** console and if this is running on a Windows machine, translate the +** output from UTF-8 into MBCS. +*/ +#if defined(_WIN32) || defined(WIN32) +void utf8_printf(FILE *out, const char *zFormat, ...){ + va_list ap; + va_start(ap, zFormat); + if( stdout_is_console && (out==stdout || out==stderr) ){ + char *z1 = sqlite3_vmprintf(zFormat, ap); + char *z2 = sqlite3_win32_utf8_to_mbcs_v2(z1, 0); + sqlite3_free(z1); + fputs(z2, out); + sqlite3_free(z2); + }else{ + vfprintf(out, zFormat, ap); + } + va_end(ap); +} +#elif !defined(utf8_printf) +# define utf8_printf fprintf +#endif + +/* +** Render output like fprintf(). This should not be used on anything that +** includes string formatting (e.g. "%s"). +*/ +#if !defined(raw_printf) +# define raw_printf fprintf +#endif + /* ** Write I/O traces to the following stream. */ @@ -292,14 +415,14 @@ static FILE *iotrace = 0; ** is written to iotrace. */ #ifdef SQLITE_ENABLE_IOTRACE -static void iotracePrintf(const char *zFormat, ...){ +static void SQLITE_CDECL iotracePrintf(const char *zFormat, ...){ va_list ap; char *z; if( iotrace==0 ) return; va_start(ap, zFormat); z = sqlite3_vmprintf(zFormat, ap); va_end(ap); - fprintf(iotrace, "%s", z); + utf8_printf(iotrace, "%s", z); sqlite3_free(z); } #endif @@ -333,8 +456,8 @@ static int isNumber(const char *z, int *realnum){ } /* -** A global char* and an SQL function to access its current value -** from within an SQL statement. This program used to use the +** A global char* and an SQL function to access its current value +** from within an SQL statement. This program used to use the ** sqlite_exec_printf() API to substitue a string into an SQL statement. ** The correct way to do this with sqlite3 is to use the bind API, but ** since the shell is built around the callback paradigm it would be a lot @@ -354,6 +477,16 @@ static void shellstaticFunc( } +/* +** Compute a string length that is limited to what can be stored in +** lower 30 bits of a 32-bit signed integer. +*/ +static int strlen30(const char *z){ + const char *z2 = z; + while( *z2 ){ z2++; } + return 0x3fffffff & (int)(z2 - z); +} + /* ** This routine reads a line of text from FILE in, stores ** the text in memory obtained from malloc() and returns a pointer @@ -389,6 +522,25 @@ static char *local_getline(char *zLine, FILE *in){ break; } } +#if defined(_WIN32) || defined(WIN32) + /* For interactive input on Windows systems, translate the + ** multi-byte characterset characters into UTF-8. */ + if( stdin_is_interactive && in==stdin ){ + char *zTrans = sqlite3_win32_mbcs_to_utf8_v2(zLine, 0); + if( zTrans ){ + int nTrans = strlen30(zTrans)+1; + if( nTrans>nLine ){ + zLine = realloc(zLine, nTrans); + if( zLine==0 ){ + sqlite3_free(zTrans); + return 0; + } + } + memcpy(zLine, zTrans, nTrans); + sqlite3_free(zTrans); + } + } +#endif /* defined(_WIN32) || defined(WIN32) */ return zLine; } @@ -413,51 +565,78 @@ static char *one_input_line(FILE *in, char *zPrior, int isContinuation){ zResult = local_getline(zPrior, in); }else{ zPrompt = isContinuation ? continuePrompt : mainPrompt; -#if defined(HAVE_READLINE) && HAVE_READLINE==1 - free(zPrior); - zResult = readline(zPrompt); - if( zResult && *zResult ) add_history(zResult); -#else +#if SHELL_USE_LOCAL_GETLINE printf("%s", zPrompt); fflush(stdout); zResult = local_getline(zPrior, stdin); +#else + free(zPrior); + zResult = shell_readline(zPrompt); + if( zResult && *zResult ) shell_add_history(zResult); #endif } return zResult; } -struct previous_mode_data { - int valid; /* Is there legit data in here? */ - int mode; - int showHeader; - int colWidth[100]; +#if defined(SQLITE_ENABLE_SESSION) +/* +** State information for a single open session +*/ +typedef struct OpenSession OpenSession; +struct OpenSession { + char *zName; /* Symbolic name for this session */ + int nFilter; /* Number of xFilter rejection GLOB patterns */ + char **azFilter; /* Array of xFilter rejection GLOB patterns */ + sqlite3_session *p; /* The open session */ +}; +#endif + +/* +** Shell output mode information from before ".explain on", +** saved so that it can be restored by ".explain off" +*/ +typedef struct SavedModeInfo SavedModeInfo; +struct SavedModeInfo { + int valid; /* Is there legit data in here? */ + int mode; /* Mode prior to ".explain on" */ + int showHeader; /* The ".header" setting prior to ".explain on" */ + int colWidth[100]; /* Column widths prior to ".explain on" */ }; /* -** An pointer to an instance of this structure is passed from -** the main program to the callback. This is used to communicate -** state and mode information. +** State information about the database connection is contained in an +** instance of the following structure. */ -struct callback_data { +typedef struct ShellState ShellState; +struct ShellState { sqlite3 *db; /* The database */ int echoOn; /* True to echo input commands */ + int autoExplain; /* Automatically turn on .explain mode */ + int autoEQP; /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */ int statsOn; /* True to display memory stats before each finalize */ + int scanstatsOn; /* True to display scan stats before each finalize */ + int countChanges; /* True to display change counts */ + int backslashOn; /* Resolve C-style \x escapes in SQL input text */ + int outCount; /* Revert to stdout when reaching zero */ int cnt; /* Number of records displayed so far */ FILE *out; /* Write results here */ FILE *traceOut; /* Output for sqlite3_trace() */ int nErr; /* Number of errors seen */ int mode; /* An output mode setting */ + int cMode; /* temporary output mode for the current query */ + int normalMode; /* Output mode before ".explain on" */ int writableSchema; /* True if PRAGMA writable_schema=ON */ int showHeader; /* True to show column names in List or Column mode */ + int nCheck; /* Number of ".check" commands run */ + unsigned shellFlgs; /* Various flags */ char *zDestTable; /* Name of destination table when MODE_Insert */ - char separator[20]; /* Separator character for MODE_List */ + char zTestcase[30]; /* Name of current test case */ + char colSeparator[20]; /* Column separator character for several modes */ + char rowSeparator[20]; /* Row separator character for MODE_Ascii */ int colWidth[100]; /* Requested width of each column when in column mode*/ int actualWidth[100]; /* Actual width of each column */ - char nullvalue[20]; /* The text to print when a NULL comes back from + char nullValue[20]; /* The text to print when a NULL comes back from ** the database */ - struct previous_mode_data explainPrev; - /* Holds the mode information just before - ** .explain ON */ char outfile[FILENAME_MAX]; /* Filename for *out */ const char *zDbFilename; /* name of the database file */ char *zFreeOnClose; /* Filename to free when closing */ @@ -467,8 +646,19 @@ struct callback_data { int *aiIndent; /* Array of indents used in MODE_Explain */ int nIndent; /* Size of array aiIndent[] */ int iIndent; /* Index of current op in aiIndent[] */ +#if defined(SQLITE_ENABLE_SESSION) + int nSession; /* Number of active sessions */ + OpenSession aSession[4]; /* Array of sessions. [0] is in focus. */ +#endif }; +/* +** These are the allowed shellFlgs values +*/ +#define SHFLG_Scratch 0x00001 /* The --scratch option is used */ +#define SHFLG_Pagecache 0x00002 /* The --pagecache option is used */ +#define SHFLG_Lookaside 0x00004 /* Lookaside memory is used */ + /* ** These are the allowed modes. */ @@ -478,9 +668,12 @@ struct callback_data { #define MODE_Semi 3 /* Same as MODE_List but append ";" to each line */ #define MODE_Html 4 /* Generate an XHTML table */ #define MODE_Insert 5 /* Generate SQL "insert" statements */ -#define MODE_Tcl 6 /* Generate ANSI-C or TCL quoted elements */ -#define MODE_Csv 7 /* Quote strings, numbers are plain */ -#define MODE_Explain 8 /* Like MODE_Column, but do not truncate data */ +#define MODE_Quote 6 /* Quote values as for SQL */ +#define MODE_Tcl 7 /* Generate ANSI-C or TCL quoted elements */ +#define MODE_Csv 8 /* Quote strings, numbers are plain */ +#define MODE_Explain 9 /* Like MODE_Column, but do not truncate data */ +#define MODE_Ascii 10 /* Use ASCII unit and record separators (0x1F/0x1E) */ +#define MODE_Pretty 11 /* Pretty-print schemas */ static const char *modeDescr[] = { "line", @@ -489,33 +682,39 @@ static const char *modeDescr[] = { "semi", "html", "insert", + "quote", "tcl", "csv", "explain", + "ascii", + "prettyprint", }; +/* +** These are the column/row/line separators used by the various +** import/export modes. +*/ +#define SEP_Column "|" +#define SEP_Row "\n" +#define SEP_Tab "\t" +#define SEP_Space " " +#define SEP_Comma "," +#define SEP_CrLf "\r\n" +#define SEP_Unit "\x1F" +#define SEP_Record "\x1E" + /* ** Number of elements in an array */ #define ArraySize(X) (int)(sizeof(X)/sizeof(X[0])) -/* -** Compute a string length that is limited to what can be stored in -** lower 30 bits of a 32-bit signed integer. -*/ -static int strlen30(const char *z){ - const char *z2 = z; - while( *z2 ){ z2++; } - return 0x3fffffff & (int)(z2 - z); -} - /* ** A callback for the sqlite3_log() interface. */ static void shellLog(void *pArg, int iErrCode, const char *zMsg){ - struct callback_data *p = (struct callback_data*)pArg; + ShellState *p = (ShellState*)pArg; if( p->pLog==0 ) return; - fprintf(p->pLog, "(%d) %s\n", iErrCode, zMsg); + utf8_printf(p->pLog, "(%d) %s\n", iErrCode, zMsg); fflush(p->pLog); } @@ -525,9 +724,9 @@ static void shellLog(void *pArg, int iErrCode, const char *zMsg){ static void output_hex_blob(FILE *out, const void *pBlob, int nBlob){ int i; char *zBlob = (char *)pBlob; - fprintf(out,"X'"); - for(i=0; i0 ){ - fprintf(out,"%.*s",i,z); + utf8_printf(out,"%.*s",i,z); } if( z[i]=='<' ){ - fprintf(out,"<"); + raw_printf(out,"<"); }else if( z[i]=='&' ){ - fprintf(out,"&"); + raw_printf(out,"&"); }else if( z[i]=='>' ){ - fprintf(out,">"); + raw_printf(out,">"); }else if( z[i]=='\"' ){ - fprintf(out,"""); + raw_printf(out,"""); }else if( z[i]=='\'' ){ - fprintf(out,"'"); + raw_printf(out,"'"); }else{ break; } @@ -631,40 +832,41 @@ static void output_html_string(FILE *out, const char *z){ ** array, then the string must be quoted for CSV. */ static const char needCsvQuote[] = { - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, }; /* -** Output a single term of CSV. Actually, p->separator is used for -** the separator, which may or may not be a comma. p->nullvalue is -** the null value. Strings are quoted if necessary. +** Output a single term of CSV. Actually, p->colSeparator is used for +** the separator, which may or may not be a comma. p->nullValue is +** the null value. Strings are quoted if necessary. The separator +** is only issued if bSep is true. */ -static void output_csv(struct callback_data *p, const char *z, int bSep){ +static void output_csv(ShellState *p, const char *z, int bSep){ FILE *out = p->out; if( z==0 ){ - fprintf(out,"%s",p->nullvalue); + utf8_printf(out,"%s",p->nullValue); }else{ int i; - int nSep = strlen30(p->separator); + int nSep = strlen30(p->colSeparator); for(i=0; z[i]; i++){ - if( needCsvQuote[((unsigned char*)z)[i]] - || (z[i]==p->separator[0] && - (nSep==1 || memcmp(z, p->separator, nSep)==0)) ){ + if( needCsvQuote[((unsigned char*)z)[i]] + || (z[i]==p->colSeparator[0] && + (nSep==1 || memcmp(z, p->colSeparator, nSep)==0)) ){ i = 0; break; } @@ -677,11 +879,11 @@ static void output_csv(struct callback_data *p, const char *z, int bSep){ } putc('"', out); }else{ - fprintf(out, "%s", z); + utf8_printf(out, "%s", z); } } if( bSep ){ - fprintf(p->out, "%s", p->separator); + utf8_printf(p->out, "%s", p->colSeparator); } } @@ -691,20 +893,94 @@ static void output_csv(struct callback_data *p, const char *z, int bSep){ */ static void interrupt_handler(int NotUsed){ UNUSED_PARAMETER(NotUsed); - seenInterrupt = 1; - if( db ) sqlite3_interrupt(db); + seenInterrupt++; + if( seenInterrupt>2 ) exit(1); + if( globalDb ) sqlite3_interrupt(globalDb); } #endif +#ifndef SQLITE_OMIT_AUTHORIZATION +/* +** When the ".auth ON" is set, the following authorizer callback is +** invoked. It always returns SQLITE_OK. +*/ +static int shellAuth( + void *pClientData, + int op, + const char *zA1, + const char *zA2, + const char *zA3, + const char *zA4 +){ + ShellState *p = (ShellState*)pClientData; + static const char *azAction[] = { 0, + "CREATE_INDEX", "CREATE_TABLE", "CREATE_TEMP_INDEX", + "CREATE_TEMP_TABLE", "CREATE_TEMP_TRIGGER", "CREATE_TEMP_VIEW", + "CREATE_TRIGGER", "CREATE_VIEW", "DELETE", + "DROP_INDEX", "DROP_TABLE", "DROP_TEMP_INDEX", + "DROP_TEMP_TABLE", "DROP_TEMP_TRIGGER", "DROP_TEMP_VIEW", + "DROP_TRIGGER", "DROP_VIEW", "INSERT", + "PRAGMA", "READ", "SELECT", + "TRANSACTION", "UPDATE", "ATTACH", + "DETACH", "ALTER_TABLE", "REINDEX", + "ANALYZE", "CREATE_VTABLE", "DROP_VTABLE", + "FUNCTION", "SAVEPOINT", "RECURSIVE" + }; + int i; + const char *az[4]; + az[0] = zA1; + az[1] = zA2; + az[2] = zA3; + az[3] = zA4; + utf8_printf(p->out, "authorizer: %s", azAction[op]); + for(i=0; i<4; i++){ + raw_printf(p->out, " "); + if( az[i] ){ + output_c_string(p->out, az[i]); + }else{ + raw_printf(p->out, "NULL"); + } + } + raw_printf(p->out, "\n"); + return SQLITE_OK; +} +#endif + +/* +** Print a schema statement. Part of MODE_Semi and MODE_Pretty output. +** +** This routine converts some CREATE TABLE statements for shadow tables +** in FTS3/4/5 into CREATE TABLE IF NOT EXISTS statements. +*/ +static void printSchemaLine(FILE *out, const char *z, const char *zTail){ + if( sqlite3_strglob("CREATE TABLE ['\"]*", z)==0 ){ + utf8_printf(out, "CREATE TABLE IF NOT EXISTS %s%s", z+13, zTail); + }else{ + utf8_printf(out, "%s%s", z, zTail); + } +} +static void printSchemaLineN(FILE *out, char *z, int n, const char *zTail){ + char c = z[n]; + z[n] = 0; + printSchemaLine(out, z, zTail); + z[n] = c; +} + /* ** This is the callback routine that the shell ** invokes for each row of a query result. */ -static int shell_callback(void *pArg, int nArg, char **azArg, char **azCol, int *aiType){ +static int shell_callback( + void *pArg, + int nArg, /* Number of result columns */ + char **azArg, /* Text of each result column */ + char **azCol, /* Column names */ + int *aiType /* Column types */ +){ int i; - struct callback_data *p = (struct callback_data*)pArg; + ShellState *p = (ShellState*)pArg; - switch( p->mode ){ + switch( p->cMode ){ case MODE_Line: { int w = 5; if( azArg==0 ) break; @@ -712,41 +988,56 @@ static int shell_callback(void *pArg, int nArg, char **azArg, char **azCol, int int len = strlen30(azCol[i] ? azCol[i] : ""); if( len>w ) w = len; } - if( p->cnt++>0 ) fprintf(p->out,"\n"); + if( p->cnt++>0 ) utf8_printf(p->out, "%s", p->rowSeparator); for(i=0; iout,"%*s = %s\n", w, azCol[i], - azArg[i] ? azArg[i] : p->nullvalue); + utf8_printf(p->out,"%*s = %s%s", w, azCol[i], + azArg[i] ? azArg[i] : p->nullValue, p->rowSeparator); } break; } case MODE_Explain: case MODE_Column: { + static const int aExplainWidths[] = {4, 13, 4, 4, 4, 13, 2, 13}; + const int *colWidth; + int showHdr; + char *rowSep; + if( p->cMode==MODE_Column ){ + colWidth = p->colWidth; + showHdr = p->showHeader; + rowSep = p->rowSeparator; + }else{ + colWidth = aExplainWidths; + showHdr = 1; + rowSep = SEP_Row; + } if( p->cnt++==0 ){ for(i=0; icolWidth) ){ - w = p->colWidth[i]; + w = colWidth[i]; }else{ w = 0; } if( w==0 ){ w = strlen30(azCol[i] ? azCol[i] : ""); if( w<10 ) w = 10; - n = strlen30(azArg && azArg[i] ? azArg[i] : p->nullvalue); + n = strlen30(azArg && azArg[i] ? azArg[i] : p->nullValue); if( wactualWidth) ){ p->actualWidth[i] = w; } - if( p->showHeader ){ + if( showHdr ){ if( w<0 ){ - fprintf(p->out,"%*.*s%s",-w,-w,azCol[i], i==nArg-1 ? "\n": " "); + utf8_printf(p->out,"%*.*s%s",-w,-w,azCol[i], + i==nArg-1 ? rowSep : " "); }else{ - fprintf(p->out,"%-*.*s%s",w,w,azCol[i], i==nArg-1 ? "\n": " "); + utf8_printf(p->out,"%-*.*s%s",w,w,azCol[i], + i==nArg-1 ? rowSep : " "); } } } - if( p->showHeader ){ + if( showHdr ){ for(i=0; iactualWidth) ){ @@ -755,9 +1046,10 @@ static int shell_callback(void *pArg, int nArg, char **azArg, char **azCol, int }else{ w = 10; } - fprintf(p->out,"%-*.*s%s",w,w,"-----------------------------------" + utf8_printf(p->out,"%-*.*s%s",w,w, + "----------------------------------------------------------" "----------------------------------------------------------", - i==nArg-1 ? "\n": " "); + i==nArg-1 ? rowSep : " "); } } } @@ -769,123 +1061,225 @@ static int shell_callback(void *pArg, int nArg, char **azArg, char **azCol, int }else{ w = 10; } - if( p->mode==MODE_Explain && azArg[i] && strlen30(azArg[i])>w ){ + if( p->cMode==MODE_Explain && azArg[i] && strlen30(azArg[i])>w ){ w = strlen30(azArg[i]); } if( i==1 && p->aiIndent && p->pStmt ){ if( p->iIndentnIndent ){ - fprintf(p->out, "%*.s", p->aiIndent[p->iIndent], ""); + utf8_printf(p->out, "%*.s", p->aiIndent[p->iIndent], ""); } p->iIndent++; } if( w<0 ){ - fprintf(p->out,"%*.*s%s",-w,-w, - azArg[i] ? azArg[i] : p->nullvalue, i==nArg-1 ? "\n": " "); + utf8_printf(p->out,"%*.*s%s",-w,-w, + azArg[i] ? azArg[i] : p->nullValue, + i==nArg-1 ? rowSep : " "); }else{ - fprintf(p->out,"%-*.*s%s",w,w, - azArg[i] ? azArg[i] : p->nullvalue, i==nArg-1 ? "\n": " "); + utf8_printf(p->out,"%-*.*s%s",w,w, + azArg[i] ? azArg[i] : p->nullValue, + i==nArg-1 ? rowSep : " "); } } break; } - case MODE_Semi: + case MODE_Semi: { /* .schema and .fullschema output */ + printSchemaLine(p->out, azArg[0], ";\n"); + break; + } + case MODE_Pretty: { /* .schema and .fullschema with --indent */ + char *z; + int j; + int nParen = 0; + char cEnd = 0; + char c; + int nLine = 0; + assert( nArg==1 ); + if( azArg[0]==0 ) break; + if( sqlite3_strlike("CREATE VIEW%", azArg[0], 0)==0 + || sqlite3_strlike("CREATE TRIG%", azArg[0], 0)==0 + ){ + utf8_printf(p->out, "%s;\n", azArg[0]); + break; + } + z = sqlite3_mprintf("%s", azArg[0]); + j = 0; + for(i=0; IsSpace(z[i]); i++){} + for(; (c = z[i])!=0; i++){ + if( IsSpace(c) ){ + if( IsSpace(z[j-1]) || z[j-1]=='(' ) continue; + }else if( (c=='(' || c==')') && j>0 && IsSpace(z[j-1]) ){ + j--; + } + z[j++] = c; + } + while( j>0 && IsSpace(z[j-1]) ){ j--; } + z[j] = 0; + if( strlen30(z)>=79 ){ + for(i=j=0; (c = z[i])!=0; i++){ + if( c==cEnd ){ + cEnd = 0; + }else if( c=='"' || c=='\'' || c=='`' ){ + cEnd = c; + }else if( c=='[' ){ + cEnd = ']'; + }else if( c=='(' ){ + nParen++; + }else if( c==')' ){ + nParen--; + if( nLine>0 && nParen==0 && j>0 ){ + printSchemaLineN(p->out, z, j, "\n"); + j = 0; + } + } + z[j++] = c; + if( nParen==1 && (c=='(' || c==',' || c=='\n') ){ + if( c=='\n' ) j--; + printSchemaLineN(p->out, z, j, "\n "); + j = 0; + nLine++; + while( IsSpace(z[i+1]) ){ i++; } + } + } + z[j] = 0; + } + printSchemaLine(p->out, z, ";\n"); + sqlite3_free(z); + break; + } case MODE_List: { if( p->cnt++==0 && p->showHeader ){ for(i=0; iout,"%s%s",azCol[i], i==nArg-1 ? "\n" : p->separator); + utf8_printf(p->out,"%s%s",azCol[i], + i==nArg-1 ? p->rowSeparator : p->colSeparator); } } if( azArg==0 ) break; for(i=0; inullvalue; - fprintf(p->out, "%s", z); + if( z==0 ) z = p->nullValue; + utf8_printf(p->out, "%s", z); if( iout, "%s", p->separator); - }else if( p->mode==MODE_Semi ){ - fprintf(p->out, ";\n"); + utf8_printf(p->out, "%s", p->colSeparator); }else{ - fprintf(p->out, "\n"); + utf8_printf(p->out, "%s", p->rowSeparator); } } break; } case MODE_Html: { if( p->cnt++==0 && p->showHeader ){ - fprintf(p->out,""); + raw_printf(p->out,""); for(i=0; iout,""); + raw_printf(p->out,""); output_html_string(p->out, azCol[i]); - fprintf(p->out,"\n"); + raw_printf(p->out,"\n"); } - fprintf(p->out,"\n"); + raw_printf(p->out,"\n"); } if( azArg==0 ) break; - fprintf(p->out,""); + raw_printf(p->out,""); for(i=0; iout,""); - output_html_string(p->out, azArg[i] ? azArg[i] : p->nullvalue); - fprintf(p->out,"\n"); + raw_printf(p->out,""); + output_html_string(p->out, azArg[i] ? azArg[i] : p->nullValue); + raw_printf(p->out,"\n"); } - fprintf(p->out,"\n"); + raw_printf(p->out,"\n"); break; } case MODE_Tcl: { if( p->cnt++==0 && p->showHeader ){ for(i=0; iout,azCol[i] ? azCol[i] : ""); - if(iout, "%s", p->separator); + if(iout, "%s", p->colSeparator); } - fprintf(p->out,"\n"); + utf8_printf(p->out, "%s", p->rowSeparator); } if( azArg==0 ) break; for(i=0; iout, azArg[i] ? azArg[i] : p->nullvalue); - if(iout, "%s", p->separator); + output_c_string(p->out, azArg[i] ? azArg[i] : p->nullValue); + if(iout, "%s", p->colSeparator); } - fprintf(p->out,"\n"); + utf8_printf(p->out, "%s", p->rowSeparator); break; } case MODE_Csv: { + setBinaryMode(p->out, 1); if( p->cnt++==0 && p->showHeader ){ for(i=0; iout,"\n"); + utf8_printf(p->out, "%s", p->rowSeparator); } - if( azArg==0 ) break; - for(i=0; i0 ){ + for(i=0; iout, "%s", p->rowSeparator); } - fprintf(p->out,"\n"); + setTextMode(p->out, 1); break; } + case MODE_Quote: case MODE_Insert: { - p->cnt++; if( azArg==0 ) break; - fprintf(p->out,"INSERT INTO %s VALUES(",p->zDestTable); + if( p->cMode==MODE_Insert ){ + utf8_printf(p->out,"INSERT INTO %s",p->zDestTable); + if( p->showHeader ){ + raw_printf(p->out,"("); + for(i=0; i0 ? ",": ""; + utf8_printf(p->out, "%s%s", zSep, azCol[i]); + } + raw_printf(p->out,")"); + } + raw_printf(p->out," VALUES("); + }else if( p->cnt==0 && p->showHeader ){ + for(i=0; i0 ) raw_printf(p->out, ","); + output_quoted_string(p->out, azCol[i]); + } + raw_printf(p->out,"\n"); + } + p->cnt++; for(i=0; i0 ? ",": ""; if( (azArg[i]==0) || (aiType && aiType[i]==SQLITE_NULL) ){ - fprintf(p->out,"%sNULL",zSep); + utf8_printf(p->out,"%sNULL",zSep); }else if( aiType && aiType[i]==SQLITE_TEXT ){ - if( zSep[0] ) fprintf(p->out,"%s",zSep); + if( zSep[0] ) utf8_printf(p->out,"%s",zSep); output_quoted_string(p->out, azArg[i]); - }else if( aiType && (aiType[i]==SQLITE_INTEGER || aiType[i]==SQLITE_FLOAT) ){ - fprintf(p->out,"%s%s",zSep, azArg[i]); + }else if( aiType && (aiType[i]==SQLITE_INTEGER + || aiType[i]==SQLITE_FLOAT) ){ + utf8_printf(p->out,"%s%s",zSep, azArg[i]); }else if( aiType && aiType[i]==SQLITE_BLOB && p->pStmt ){ const void *pBlob = sqlite3_column_blob(p->pStmt, i); int nBlob = sqlite3_column_bytes(p->pStmt, i); - if( zSep[0] ) fprintf(p->out,"%s",zSep); + if( zSep[0] ) utf8_printf(p->out,"%s",zSep); output_hex_blob(p->out, pBlob, nBlob); }else if( isNumber(azArg[i], 0) ){ - fprintf(p->out,"%s%s",zSep, azArg[i]); + utf8_printf(p->out,"%s%s",zSep, azArg[i]); }else{ - if( zSep[0] ) fprintf(p->out,"%s",zSep); + if( zSep[0] ) utf8_printf(p->out,"%s",zSep); output_quoted_string(p->out, azArg[i]); } } - fprintf(p->out,");\n"); + raw_printf(p->out,p->cMode==MODE_Quote?"\n":");\n"); + break; + } + case MODE_Ascii: { + if( p->cnt++==0 && p->showHeader ){ + for(i=0; i0 ) utf8_printf(p->out, "%s", p->colSeparator); + utf8_printf(p->out,"%s",azCol[i] ? azCol[i] : ""); + } + utf8_printf(p->out, "%s", p->rowSeparator); + } + if( azArg==0 ) break; + for(i=0; i0 ) utf8_printf(p->out, "%s", p->colSeparator); + utf8_printf(p->out,"%s",azArg[i] ? azArg[i] : p->nullValue); + } + utf8_printf(p->out, "%s", p->rowSeparator); break; } } @@ -902,11 +1296,11 @@ static int callback(void *pArg, int nArg, char **azArg, char **azCol){ } /* -** Set the destination table field of the callback_data structure to +** Set the destination table field of the ShellState structure to ** the name of the table given. Escape any quote characters in the ** table name. */ -static void set_table_name(struct callback_data *p, const char *zName){ +static void set_table_name(ShellState *p, const char *zName){ int i, n; int needQuote; char *z; @@ -926,7 +1320,7 @@ static void set_table_name(struct callback_data *p, const char *zName){ if( needQuote ) n += 2; z = p->zDestTable = malloc( n+1 ); if( z==0 ){ - fprintf(stderr,"Error: out of memory\n"); + raw_printf(stderr,"Error: out of memory\n"); exit(1); } n = 0; @@ -944,7 +1338,7 @@ static void set_table_name(struct callback_data *p, const char *zName){ ** added to zIn, and the result returned in memory obtained from malloc(). ** zIn, if it was not NULL, is freed. ** -** If the third argument, quote, is not '\0', then it is used as a +** If the third argument, quote, is not '\0', then it is used as a ** quote character for zAppend. */ static char *appendText(char *zIn, char const *zAppend, char quote){ @@ -991,12 +1385,12 @@ static char *appendText(char *zIn, char const *zAppend, char quote){ ** semicolon terminator to the end of that line. ** ** If the number of columns is 1 and that column contains text "--" -** then write the semicolon on a separate line. That way, if a +** then write the semicolon on a separate line. That way, if a ** "--" comment occurs at the end of the statement, the comment ** won't consume the semicolon terminator. */ static int run_table_dump_query( - struct callback_data *p, /* Query context */ + ShellState *p, /* Query context */ const char *zSelect, /* SELECT statement to extract content */ const char *zFirstRow /* Print before first row, if not NULL */ ){ @@ -1005,9 +1399,10 @@ static int run_table_dump_query( int nResult; int i; const char *z; - rc = sqlite3_prepare(p->db, zSelect, -1, &pSelect, 0); + rc = sqlite3_prepare_v2(p->db, zSelect, -1, &pSelect, 0); if( rc!=SQLITE_OK || !pSelect ){ - fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db)); + utf8_printf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, + sqlite3_errmsg(p->db)); if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++; return rc; } @@ -1015,26 +1410,27 @@ static int run_table_dump_query( nResult = sqlite3_column_count(pSelect); while( rc==SQLITE_ROW ){ if( zFirstRow ){ - fprintf(p->out, "%s", zFirstRow); + utf8_printf(p->out, "%s", zFirstRow); zFirstRow = 0; } z = (const char*)sqlite3_column_text(pSelect, 0); - fprintf(p->out, "%s", z); - for(i=1; iout, ",%s", sqlite3_column_text(pSelect, i)); + utf8_printf(p->out, "%s", z); + for(i=1; iout, ",%s", sqlite3_column_text(pSelect, i)); } if( z==0 ) z = ""; while( z[0] && (z[0]!='-' || z[1]!='-') ) z++; if( z[0] ){ - fprintf(p->out, "\n;\n"); + raw_printf(p->out, "\n;\n"); }else{ - fprintf(p->out, ";\n"); - } + raw_printf(p->out, ";\n"); + } rc = sqlite3_step(pSelect); } rc = sqlite3_finalize(pSelect); if( rc!=SQLITE_OK ){ - fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db)); + utf8_printf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, + sqlite3_errmsg(p->db)); if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++; } return rc; @@ -1047,109 +1443,229 @@ static char *save_err_msg( sqlite3 *db /* Database to query */ ){ int nErrMsg = 1+strlen30(sqlite3_errmsg(db)); - char *zErrMsg = sqlite3_malloc(nErrMsg); + char *zErrMsg = sqlite3_malloc64(nErrMsg); if( zErrMsg ){ memcpy(zErrMsg, sqlite3_errmsg(db), nErrMsg); } return zErrMsg; } +#ifdef __linux__ +/* +** Attempt to display I/O stats on Linux using /proc/PID/io +*/ +static void displayLinuxIoStats(FILE *out){ + FILE *in; + char z[200]; + sqlite3_snprintf(sizeof(z), z, "/proc/%d/io", getpid()); + in = fopen(z, "rb"); + if( in==0 ) return; + while( fgets(z, sizeof(z), in)!=0 ){ + static const struct { + const char *zPattern; + const char *zDesc; + } aTrans[] = { + { "rchar: ", "Bytes received by read():" }, + { "wchar: ", "Bytes sent to write():" }, + { "syscr: ", "Read() system calls:" }, + { "syscw: ", "Write() system calls:" }, + { "read_bytes: ", "Bytes read from storage:" }, + { "write_bytes: ", "Bytes written to storage:" }, + { "cancelled_write_bytes: ", "Cancelled write bytes:" }, + }; + int i; + for(i=0; iout ){ - + iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Memory Used: %d (max %d) bytes\n", iCur, iHiwtr); + raw_printf(pArg->out, + "Memory Used: %d (max %d) bytes\n", + iCur, iHiwtr); iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Outstanding Allocations: %d (max %d)\n", iCur, iHiwtr); -/* -** Not currently used by the CLI. -** iHiwtr = iCur = -1; -** sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset); -** fprintf(pArg->out, "Number of Pcache Pages Used: %d (max %d) pages\n", iCur, iHiwtr); -*/ + raw_printf(pArg->out, "Number of Outstanding Allocations: %d (max %d)\n", + iCur, iHiwtr); + if( pArg->shellFlgs & SHFLG_Pagecache ){ + iHiwtr = iCur = -1; + sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, + "Number of Pcache Pages Used: %d (max %d) pages\n", + iCur, iHiwtr); + } iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Pcache Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr); -/* -** Not currently used by the CLI. -** iHiwtr = iCur = -1; -** sqlite3_status(SQLITE_STATUS_SCRATCH_USED, &iCur, &iHiwtr, bReset); -** fprintf(pArg->out, "Number of Scratch Allocations Used: %d (max %d)\n", iCur, iHiwtr); -*/ + raw_printf(pArg->out, + "Number of Pcache Overflow Bytes: %d (max %d) bytes\n", + iCur, iHiwtr); + if( pArg->shellFlgs & SHFLG_Scratch ){ + iHiwtr = iCur = -1; + sqlite3_status(SQLITE_STATUS_SCRATCH_USED, &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, + "Number of Scratch Allocations Used: %d (max %d)\n", + iCur, iHiwtr); + } iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_SCRATCH_OVERFLOW, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Scratch Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr); + raw_printf(pArg->out, + "Number of Scratch Overflow Bytes: %d (max %d) bytes\n", + iCur, iHiwtr); iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Allocation: %d bytes\n", iHiwtr); + raw_printf(pArg->out, "Largest Allocation: %d bytes\n", + iHiwtr); iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_PAGECACHE_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Pcache Allocation: %d bytes\n", iHiwtr); + raw_printf(pArg->out, "Largest Pcache Allocation: %d bytes\n", + iHiwtr); iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_SCRATCH_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Scratch Allocation: %d bytes\n", iHiwtr); + raw_printf(pArg->out, "Largest Scratch Allocation: %d bytes\n", + iHiwtr); #ifdef YYTRACKMAXSTACKDEPTH iHiwtr = iCur = -1; sqlite3_status(SQLITE_STATUS_PARSER_STACK, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Deepest Parser Stack: %d (max %d)\n", iCur, iHiwtr); + raw_printf(pArg->out, "Deepest Parser Stack: %d (max %d)\n", + iCur, iHiwtr); #endif } if( pArg && pArg->out && db ){ - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside Slots Used: %d (max %d)\n", iCur, iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Successful lookaside attempts: %d\n", iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside failures due to size: %d\n", iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside failures due to OOM: %d\n", iHiwtr); + if( pArg->shellFlgs & SHFLG_Lookaside ){ + iHiwtr = iCur = -1; + sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, + &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, + "Lookaside Slots Used: %d (max %d)\n", + iCur, iHiwtr); + sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, + &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, "Successful lookaside attempts: %d\n", + iHiwtr); + sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, + &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, "Lookaside failures due to size: %d\n", + iHiwtr); + sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, + &iCur, &iHiwtr, bReset); + raw_printf(pArg->out, "Lookaside failures due to OOM: %d\n", + iHiwtr); + } iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur); iHiwtr = iCur = -1; + raw_printf(pArg->out, "Pager Heap Usage: %d bytes\n", + iCur); + iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1); - fprintf(pArg->out, "Page cache hits: %d\n", iCur); + raw_printf(pArg->out, "Page cache hits: %d\n", iCur); iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1); - fprintf(pArg->out, "Page cache misses: %d\n", iCur); + raw_printf(pArg->out, "Page cache misses: %d\n", iCur); iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_WRITE, &iCur, &iHiwtr, 1); - fprintf(pArg->out, "Page cache writes: %d\n", iCur); + raw_printf(pArg->out, "Page cache writes: %d\n", iCur); iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Schema Heap Usage: %d bytes\n", iCur); + raw_printf(pArg->out, "Schema Heap Usage: %d bytes\n", + iCur); iHiwtr = iCur = -1; sqlite3_db_status(db, SQLITE_DBSTATUS_STMT_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Statement Heap/Lookaside Usage: %d bytes\n", iCur); + raw_printf(pArg->out, "Statement Heap/Lookaside Usage: %d bytes\n", + iCur); } if( pArg && pArg->out && db && pArg->pStmt ){ - iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_FULLSCAN_STEP, bReset); - fprintf(pArg->out, "Fullscan Steps: %d\n", iCur); + iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_FULLSCAN_STEP, + bReset); + raw_printf(pArg->out, "Fullscan Steps: %d\n", iCur); iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_SORT, bReset); - fprintf(pArg->out, "Sort Operations: %d\n", iCur); - iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_AUTOINDEX, bReset); - fprintf(pArg->out, "Autoindex Inserts: %d\n", iCur); + raw_printf(pArg->out, "Sort Operations: %d\n", iCur); + iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_AUTOINDEX,bReset); + raw_printf(pArg->out, "Autoindex Inserts: %d\n", iCur); iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_VM_STEP, bReset); - fprintf(pArg->out, "Virtual Machine Steps: %d\n", iCur); + raw_printf(pArg->out, "Virtual Machine Steps: %d\n", iCur); } +#ifdef __linux__ + displayLinuxIoStats(pArg->out); +#endif + + /* Do not remove this machine readable comment: extra-stats-output-here */ + return 0; } +/* +** Display scan stats. +*/ +static void display_scanstats( + sqlite3 *db, /* Database to query */ + ShellState *pArg /* Pointer to ShellState */ +){ +#ifndef SQLITE_ENABLE_STMT_SCANSTATUS + UNUSED_PARAMETER(db); + UNUSED_PARAMETER(pArg); +#else + int i, k, n, mx; + raw_printf(pArg->out, "-------- scanstats --------\n"); + mx = 0; + for(k=0; k<=mx; k++){ + double rEstLoop = 1.0; + for(i=n=0; 1; i++){ + sqlite3_stmt *p = pArg->pStmt; + sqlite3_int64 nLoop, nVisit; + double rEst; + int iSid; + const char *zExplain; + if( sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_NLOOP, (void*)&nLoop) ){ + break; + } + sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_SELECTID, (void*)&iSid); + if( iSid>mx ) mx = iSid; + if( iSid!=k ) continue; + if( n==0 ){ + rEstLoop = (double)nLoop; + if( k>0 ) raw_printf(pArg->out, "-------- subquery %d -------\n", k); + } + n++; + sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_NVISIT, (void*)&nVisit); + sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_EST, (void*)&rEst); + sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_EXPLAIN, (void*)&zExplain); + utf8_printf(pArg->out, "Loop %2d: %s\n", n, zExplain); + rEstLoop *= rEst; + raw_printf(pArg->out, + " nLoop=%-8lld nRow=%-8lld estRow=%-8lld estRow/Loop=%-8g\n", + nLoop, nVisit, (sqlite3_int64)(rEstLoop+0.5), rEst + ); + } + } + raw_printf(pArg->out, "---------------------------\n"); +#endif +} + /* ** Parameter azArray points to a zero-terminated array of strings. zStr ** points to a single nul-terminated string. Return non-zero if zStr @@ -1166,8 +1682,8 @@ static int str_in_array(const char *zStr, const char **azArray){ /* ** If compiled statement pSql appears to be an EXPLAIN statement, allocate -** and populate the callback_data.aiIndent[] array with the number of -** spaces each opcode should be indented before it is output. +** and populate the ShellState.aiIndent[] array with the number of +** spaces each opcode should be indented before it is output. ** ** The indenting rules are: ** @@ -1178,26 +1694,36 @@ static int str_in_array(const char *zStr, const char **azArray){ ** * For each "Goto", if the jump destination is earlier in the program ** and ends on one of: ** Yield SeekGt SeekLt RowSetRead Rewind +** or if the P1 parameter is one instead of zero, ** then indent all opcodes between the earlier instruction ** and "Goto" by 2 spaces. */ -static void explain_data_prepare(struct callback_data *p, sqlite3_stmt *pSql){ +static void explain_data_prepare(ShellState *p, sqlite3_stmt *pSql){ const char *zSql; /* The text of the SQL statement */ const char *z; /* Used to check if this is an EXPLAIN */ int *abYield = 0; /* True if op is an OP_Yield */ int nAlloc = 0; /* Allocated size of p->aiIndent[], abYield */ int iOp; /* Index of operation in p->aiIndent[] */ - const char *azNext[] = { "Next", "Prev", "VPrev", "VNext", "SorterNext", 0 }; - const char *azYield[] = { "Yield", "SeekLt", "SeekGt", "RowSetRead", "Rewind", 0 }; + const char *azNext[] = { "Next", "Prev", "VPrev", "VNext", "SorterNext", + "NextIfOpen", "PrevIfOpen", 0 }; + const char *azYield[] = { "Yield", "SeekLT", "SeekGT", "RowSetRead", + "Rewind", 0 }; const char *azGoto[] = { "Goto", 0 }; /* Try to figure out if this is really an EXPLAIN statement. If this ** cannot be verified, return early. */ + if( sqlite3_column_count(pSql)!=8 ){ + p->cMode = p->mode; + return; + } zSql = sqlite3_sql(pSql); if( zSql==0 ) return; for(z=zSql; *z==' ' || *z=='\t' || *z=='\n' || *z=='\f' || *z=='\r'; z++); - if( sqlite3_strnicmp(z, "explain", 7) ) return; + if( sqlite3_strnicmp(z, "explain", 7) ){ + p->cMode = p->mode; + return; + } for(iOp=0; SQLITE_ROW==sqlite3_step(pSql); iOp++){ int i; @@ -1214,9 +1740,23 @@ static void explain_data_prepare(struct callback_data *p, sqlite3_stmt *pSql){ /* Grow the p->aiIndent array as required */ if( iOp>=nAlloc ){ + if( iOp==0 ){ + /* Do further verfication that this is explain output. Abort if + ** it is not */ + static const char *explainCols[] = { + "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment" }; + int jj; + for(jj=0; jjcMode = p->mode; + sqlite3_reset(pSql); + return; + } + } + } nAlloc += 100; - p->aiIndent = (int*)sqlite3_realloc(p->aiIndent, nAlloc*sizeof(int)); - abYield = (int*)sqlite3_realloc(abYield, nAlloc*sizeof(int)); + p->aiIndent = (int*)sqlite3_realloc64(p->aiIndent, nAlloc*sizeof(int)); + abYield = (int*)sqlite3_realloc64(abYield, nAlloc*sizeof(int)); } abYield[iOp] = str_in_array(zOp, azYield); p->aiIndent[iOp] = 0; @@ -1225,8 +1765,10 @@ static void explain_data_prepare(struct callback_data *p, sqlite3_stmt *pSql){ if( str_in_array(zOp, azNext) ){ for(i=p2op; iaiIndent[i] += 2; } - if( str_in_array(zOp, azGoto) && p2opnIndent && abYield[p2op] ){ - for(i=p2op+1; iaiIndent[i] += 2; + if( str_in_array(zOp, azGoto) && p2opnIndent + && (abYield[p2op] || sqlite3_column_int(pSql, 2)) + ){ + for(i=p2op; iaiIndent[i] += 2; } } @@ -1238,7 +1780,7 @@ static void explain_data_prepare(struct callback_data *p, sqlite3_stmt *pSql){ /* ** Free the array allocated by explain_data_prepare(). */ -static void explain_data_delete(struct callback_data *p){ +static void explain_data_delete(ShellState *p){ sqlite3_free(p->aiIndent); p->aiIndent = 0; p->nIndent = 0; @@ -1246,21 +1788,119 @@ static void explain_data_delete(struct callback_data *p){ } /* -** Execute a statement or set of statements. Print -** any result rows/columns depending on the current mode +** Disable and restore .wheretrace and .selecttrace settings. +*/ +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_SELECTTRACE) +extern int sqlite3SelectTrace; +static int savedSelectTrace; +#endif +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_WHERETRACE) +extern int sqlite3WhereTrace; +static int savedWhereTrace; +#endif +static void disable_debug_trace_modes(void){ +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_SELECTTRACE) + savedSelectTrace = sqlite3SelectTrace; + sqlite3SelectTrace = 0; +#endif +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_WHERETRACE) + savedWhereTrace = sqlite3WhereTrace; + sqlite3WhereTrace = 0; +#endif +} +static void restore_debug_trace_modes(void){ +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_SELECTTRACE) + sqlite3SelectTrace = savedSelectTrace; +#endif +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_WHERETRACE) + sqlite3WhereTrace = savedWhereTrace; +#endif +} + +/* +** Run a prepared statement +*/ +static void exec_prepared_stmt( + ShellState *pArg, /* Pointer to ShellState */ + sqlite3_stmt *pStmt, /* Statment to run */ + int (*xCallback)(void*,int,char**,char**,int*) /* Callback function */ +){ + int rc; + + /* perform the first step. this will tell us if we + ** have a result set or not and how wide it is. + */ + rc = sqlite3_step(pStmt); + /* if we have a result set... */ + if( SQLITE_ROW == rc ){ + /* if we have a callback... */ + if( xCallback ){ + /* allocate space for col name ptr, value ptr, and type */ + int nCol = sqlite3_column_count(pStmt); + void *pData = sqlite3_malloc64(3*nCol*sizeof(const char*) + 1); + if( !pData ){ + rc = SQLITE_NOMEM; + }else{ + char **azCols = (char **)pData; /* Names of result columns */ + char **azVals = &azCols[nCol]; /* Results */ + int *aiTypes = (int *)&azVals[nCol]; /* Result types */ + int i, x; + assert(sizeof(int) <= sizeof(char *)); + /* save off ptrs to column names */ + for(i=0; icMode==MODE_Insert ){ + azVals[i] = ""; + }else{ + azVals[i] = (char*)sqlite3_column_text(pStmt, i); + } + if( !azVals[i] && (aiTypes[i]!=SQLITE_NULL) ){ + rc = SQLITE_NOMEM; + break; /* from for */ + } + } /* end for */ + + /* if data and types extracted successfully... */ + if( SQLITE_ROW == rc ){ + /* call the supplied callback with the result row data */ + if( xCallback(pArg, nCol, azVals, azCols, aiTypes) ){ + rc = SQLITE_ABORT; + }else{ + rc = sqlite3_step(pStmt); + } + } + } while( SQLITE_ROW == rc ); + sqlite3_free(pData); + } + }else{ + do{ + rc = sqlite3_step(pStmt); + } while( rc == SQLITE_ROW ); + } + } +} + +/* +** Execute a statement or set of statements. Print +** any result rows/columns depending on the current mode ** set via the supplied callback. ** -** This is very similar to SQLite's built-in sqlite3_exec() -** function except it takes a slightly different callback +** This is very similar to SQLite's built-in sqlite3_exec() +** function except it takes a slightly different callback ** and callback data argument. */ static int shell_exec( - sqlite3 *db, /* An open database */ - const char *zSql, /* SQL to be evaluated */ + sqlite3 *db, /* An open database */ + const char *zSql, /* SQL to be evaluated */ int (*xCallback)(void*,int,char**,char**,int*), /* Callback function */ - /* (not the same as sqlite3_exec) */ - struct callback_data *pArg, /* Pointer to struct callback_data */ - char **pzErrMsg /* Error msg written here */ + /* (not the same as sqlite3_exec) */ + ShellState *pArg, /* Pointer to ShellState */ + char **pzErrMsg /* Error msg written here */ ){ sqlite3_stmt *pStmt = NULL; /* Statement to execute. */ int rc = SQLITE_OK; /* Return Code */ @@ -1272,6 +1912,7 @@ static int shell_exec( } while( zSql[0] && (SQLITE_OK == rc) ){ + static const char *zStmtSql; rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zLeftover); if( SQLITE_OK != rc ){ if( pzErrMsg ){ @@ -1284,6 +1925,9 @@ static int shell_exec( while( IsSpace(zSql[0]) ) zSql++; continue; } + zStmtSql = sqlite3_sql(pStmt); + if( zStmtSql==0 ) zStmtSql = ""; + while( IsSpace(zStmtSql[0]) ) zStmtSql++; /* save off the prepared statment handle and reset row count */ if( pArg ){ @@ -1293,82 +1937,59 @@ static int shell_exec( /* echo the sql statement if echo on */ if( pArg && pArg->echoOn ){ - const char *zStmtSql = sqlite3_sql(pStmt); - fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql); + utf8_printf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql); } - /* Output TESTCTRL_EXPLAIN text of requested */ - if( pArg && pArg->mode==MODE_Explain ){ - const char *zExplain = 0; - sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, pStmt, &zExplain); - if( zExplain && zExplain[0] ){ - fprintf(pArg->out, "%s", zExplain); - } - } - - /* If the shell is currently in ".explain" mode, gather the extra - ** data required to add indents to the output.*/ - if( pArg && pArg->mode==MODE_Explain ){ - explain_data_prepare(pArg, pStmt); - } - - /* perform the first step. this will tell us if we - ** have a result set or not and how wide it is. - */ - rc = sqlite3_step(pStmt); - /* if we have a result set... */ - if( SQLITE_ROW == rc ){ - /* if we have a callback... */ - if( xCallback ){ - /* allocate space for col name ptr, value ptr, and type */ - int nCol = sqlite3_column_count(pStmt); - void *pData = sqlite3_malloc(3*nCol*sizeof(const char*) + 1); - if( !pData ){ - rc = SQLITE_NOMEM; - }else{ - char **azCols = (char **)pData; /* Names of result columns */ - char **azVals = &azCols[nCol]; /* Results */ - int *aiTypes = (int *)&azVals[nCol]; /* Result types */ - int i, x; - assert(sizeof(int) <= sizeof(char *)); - /* save off ptrs to column names */ - for(i=0; imode==MODE_Insert ){ - azVals[i] = ""; - }else{ - azVals[i] = (char*)sqlite3_column_text(pStmt, i); - } - if( !azVals[i] && (aiTypes[i]!=SQLITE_NULL) ){ - rc = SQLITE_NOMEM; - break; /* from for */ - } - } /* end for */ - - /* if data and types extracted successfully... */ - if( SQLITE_ROW == rc ){ - /* call the supplied callback with the result row data */ - if( xCallback(pArg, nCol, azVals, azCols, aiTypes) ){ - rc = SQLITE_ABORT; - }else{ - rc = sqlite3_step(pStmt); - } - } - } while( SQLITE_ROW == rc ); - sqlite3_free(pData); + /* Show the EXPLAIN QUERY PLAN if .eqp is on */ + if( pArg && pArg->autoEQP && sqlite3_strlike("EXPLAIN%",zStmtSql,0)!=0 ){ + sqlite3_stmt *pExplain; + char *zEQP; + disable_debug_trace_modes(); + zEQP = sqlite3_mprintf("EXPLAIN QUERY PLAN %s", zStmtSql); + rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); + if( rc==SQLITE_OK ){ + while( sqlite3_step(pExplain)==SQLITE_ROW ){ + raw_printf(pArg->out,"--EQP-- %d,",sqlite3_column_int(pExplain, 0)); + raw_printf(pArg->out,"%d,", sqlite3_column_int(pExplain, 1)); + raw_printf(pArg->out,"%d,", sqlite3_column_int(pExplain, 2)); + utf8_printf(pArg->out,"%s\n", sqlite3_column_text(pExplain, 3)); } - }else{ - do{ - rc = sqlite3_step(pStmt); - } while( rc == SQLITE_ROW ); + } + sqlite3_finalize(pExplain); + sqlite3_free(zEQP); + if( pArg->autoEQP>=2 ){ + /* Also do an EXPLAIN for ".eqp full" mode */ + zEQP = sqlite3_mprintf("EXPLAIN %s", zStmtSql); + rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); + if( rc==SQLITE_OK ){ + pArg->cMode = MODE_Explain; + explain_data_prepare(pArg, pExplain); + exec_prepared_stmt(pArg, pExplain, xCallback); + explain_data_delete(pArg); + } + sqlite3_finalize(pExplain); + sqlite3_free(zEQP); + } + restore_debug_trace_modes(); + } + + if( pArg ){ + pArg->cMode = pArg->mode; + if( pArg->autoExplain + && sqlite3_column_count(pStmt)==8 + && sqlite3_strlike("EXPLAIN%", zStmtSql,0)==0 + ){ + pArg->cMode = MODE_Explain; + } + + /* If the shell is currently in ".explain" mode, gather the extra + ** data required to add indents to the output.*/ + if( pArg->cMode==MODE_Explain ){ + explain_data_prepare(pArg, pStmt); } } + exec_prepared_stmt(pArg, pStmt, xCallback); explain_data_delete(pArg); /* print usage stats if stats on */ @@ -1376,7 +1997,12 @@ static int shell_exec( display_stats(db, pArg, 0); } - /* Finalize the statement just executed. If this fails, save a + /* print loop-counters if required */ + if( pArg && pArg->scanstatsOn ){ + display_scanstats(db, pArg); + } + + /* Finalize the statement just executed. If this fails, save a ** copy of the error message. Otherwise, set zSql to point to the ** next statement to execute. */ rc2 = sqlite3_finalize(pStmt); @@ -1411,35 +2037,35 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){ const char *zType; const char *zSql; const char *zPrepStmt = 0; - struct callback_data *p = (struct callback_data *)pArg; + ShellState *p = (ShellState *)pArg; UNUSED_PARAMETER(azCol); if( nArg!=3 ) return 1; zTable = azArg[0]; zType = azArg[1]; zSql = azArg[2]; - + if( strcmp(zTable, "sqlite_sequence")==0 ){ zPrepStmt = "DELETE FROM sqlite_sequence;\n"; }else if( sqlite3_strglob("sqlite_stat?", zTable)==0 ){ - fprintf(p->out, "ANALYZE sqlite_master;\n"); + raw_printf(p->out, "ANALYZE sqlite_master;\n"); }else if( strncmp(zTable, "sqlite_", 7)==0 ){ return 0; }else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){ char *zIns; if( !p->writableSchema ){ - fprintf(p->out, "PRAGMA writable_schema=ON;\n"); + raw_printf(p->out, "PRAGMA writable_schema=ON;\n"); p->writableSchema = 1; } zIns = sqlite3_mprintf( "INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)" "VALUES('table','%q','%q',0,'%q');", zTable, zTable, zSql); - fprintf(p->out, "%s\n", zIns); + utf8_printf(p->out, "%s\n", zIns); sqlite3_free(zIns); return 0; }else{ - fprintf(p->out, "%s;\n", zSql); + printSchemaLine(p->out, zSql, ";\n"); } if( strcmp(zType, "table")==0 ){ @@ -1448,12 +2074,12 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){ char *zTableInfo = 0; char *zTmp = 0; int nRow = 0; - + zTableInfo = appendText(zTableInfo, "PRAGMA table_info(", 0); zTableInfo = appendText(zTableInfo, zTable, '"'); zTableInfo = appendText(zTableInfo, ");", 0); - rc = sqlite3_prepare(p->db, zTableInfo, -1, &pTableInfo, 0); + rc = sqlite3_prepare_v2(p->db, zTableInfo, -1, &pTableInfo, 0); free(zTableInfo); if( rc!=SQLITE_OK || !pTableInfo ){ return 1; @@ -1507,7 +2133,7 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){ ** "ORDER BY rowid DESC" to the end. */ static int run_schema_dump_query( - struct callback_data *p, + ShellState *p, const char *zQuery ){ int rc; @@ -1516,9 +2142,9 @@ static int run_schema_dump_query( if( rc==SQLITE_CORRUPT ){ char *zQ2; int len = strlen30(zQuery); - fprintf(p->out, "/****** CORRUPTION ERROR *******/\n"); + raw_printf(p->out, "/****** CORRUPTION ERROR *******/\n"); if( zErr ){ - fprintf(p->out, "/****** %s ******/\n", zErr); + utf8_printf(p->out, "/****** %s ******/\n", zErr); sqlite3_free(zErr); zErr = 0; } @@ -1527,7 +2153,7 @@ static int run_schema_dump_query( sqlite3_snprintf(len+100, zQ2, "%s ORDER BY rowid DESC", zQuery); rc = sqlite3_exec(p->db, zQ2, dump_callback, p, &zErr); if( rc ){ - fprintf(p->out, "/****** ERROR: %s ******/\n", zErr); + utf8_printf(p->out, "/****** ERROR: %s ******/\n", zErr); }else{ rc = SQLITE_CORRUPT; } @@ -1541,116 +2167,325 @@ static int run_schema_dump_query( ** Text of a help message */ static char zHelp[] = +#ifndef SQLITE_OMIT_AUTHORIZATION + ".auth ON|OFF Show authorizer callbacks\n" +#endif ".backup ?DB? FILE Backup DB (default \"main\") to FILE\n" - ".bail ON|OFF Stop after hitting an error. Default OFF\n" + ".bail on|off Stop after hitting an error. Default OFF\n" + ".binary on|off Turn binary output on or off. Default OFF\n" + ".changes on|off Show number of rows changed by SQL\n" + ".check GLOB Fail if output since .testcase does not match\n" + ".clone NEWDB Clone data into NEWDB from the existing database\n" ".databases List names and files of attached databases\n" + ".dbinfo ?DB? Show status information about the database\n" ".dump ?TABLE? ... Dump the database in an SQL text format\n" " If TABLE specified, only dump tables matching\n" " LIKE pattern TABLE.\n" - ".echo ON|OFF Turn command echo on or off\n" + ".echo on|off Turn command echo on or off\n" + ".eqp on|off|full Enable or disable automatic EXPLAIN QUERY PLAN\n" ".exit Exit this program\n" - ".explain ?ON|OFF? Turn output mode suitable for EXPLAIN on or off.\n" - " With no args, it turns EXPLAIN on.\n" - ".header(s) ON|OFF Turn display of headers on or off\n" + ".explain ?on|off|auto? Turn EXPLAIN output mode on or off or to automatic\n" + ".fullschema ?--indent? Show schema and the content of sqlite_stat tables\n" + ".headers on|off Turn display of headers on or off\n" ".help Show this message\n" ".import FILE TABLE Import data from FILE into TABLE\n" - ".indices ?TABLE? Show names of all indices\n" - " If TABLE specified, only show indices for tables\n" +#ifndef SQLITE_OMIT_TEST_CONTROL + ".imposter INDEX TABLE Create imposter table TABLE on index INDEX\n" +#endif + ".indexes ?TABLE? Show names of all indexes\n" + " If TABLE specified, only show indexes for tables\n" " matching LIKE pattern TABLE.\n" #ifdef SQLITE_ENABLE_IOTRACE ".iotrace FILE Enable I/O diagnostic logging to FILE\n" #endif + ".limit ?LIMIT? ?VAL? Display or change the value of an SQLITE_LIMIT\n" + ".lint OPTIONS Report potential schema issues. Options:\n" + " fkey-indexes Find missing foreign key indexes\n" #ifndef SQLITE_OMIT_LOAD_EXTENSION ".load FILE ?ENTRY? Load an extension library\n" #endif ".log FILE|off Turn logging on or off. FILE can be stderr/stdout\n" ".mode MODE ?TABLE? Set output mode where MODE is one of:\n" + " ascii Columns/rows delimited by 0x1F and 0x1E\n" " csv Comma-separated values\n" " column Left-aligned columns. (See .width)\n" " html HTML code\n" " insert SQL insert statements for TABLE\n" " line One value per line\n" - " list Values delimited by .separator string\n" + " list Values delimited by .separator strings\n" + " quote Escape answers as for SQL\n" " tabs Tab-separated values\n" " tcl TCL list elements\n" ".nullvalue STRING Use STRING in place of NULL values\n" - ".open ?FILENAME? Close existing database and reopen FILENAME\n" - ".output FILENAME Send output to FILENAME\n" - ".output stdout Send output to the screen\n" + ".once FILENAME Output for the next SQL command only to FILENAME\n" + ".open ?--new? ?FILE? Close existing database and reopen FILE\n" + " The --new starts with an empty file\n" + ".output ?FILENAME? Send output to FILENAME or stdout\n" ".print STRING... Print literal STRING\n" ".prompt MAIN CONTINUE Replace the standard prompts\n" ".quit Exit this program\n" ".read FILENAME Execute SQL in FILENAME\n" ".restore ?DB? FILE Restore content of DB (default \"main\") from FILE\n" - ".schema ?TABLE? Show the CREATE statements\n" - " If TABLE specified, only show tables matching\n" - " LIKE pattern TABLE.\n" - ".separator STRING Change separator used by output mode and .import\n" + ".save FILE Write in-memory database into FILE\n" + ".scanstats on|off Turn sqlite3_stmt_scanstatus() metrics on or off\n" + ".schema ?PATTERN? Show the CREATE statements matching PATTERN\n" + " Add --indent for pretty-printing\n" + ".separator COL ?ROW? Change the column separator and optionally the row\n" + " separator for both the output mode and .import\n" +#if defined(SQLITE_ENABLE_SESSION) + ".session CMD ... Create or control sessions\n" +#endif + ".shell CMD ARGS... Run CMD ARGS... in a system shell\n" ".show Show the current values for various settings\n" - ".stats ON|OFF Turn stats on or off\n" + ".stats ?on|off? Show stats or turn stats on or off\n" + ".system CMD ARGS... Run CMD ARGS... in a system shell\n" ".tables ?TABLE? List names of tables\n" " If TABLE specified, only list tables matching\n" " LIKE pattern TABLE.\n" + ".testcase NAME Begin redirecting output to 'testcase-out.txt'\n" ".timeout MS Try opening locked tables for MS milliseconds\n" + ".timer on|off Turn SQL timer on or off\n" ".trace FILE|off Output each SQL statement as it is run\n" + ".vfsinfo ?AUX? Information about the top-level VFS\n" + ".vfslist List all available VFSes\n" ".vfsname ?AUX? Print the name of the VFS stack\n" ".width NUM1 NUM2 ... Set column widths for \"column\" mode\n" + " Negative values right-justify\n" ; -static char zTimerHelp[] = - ".timer ON|OFF Turn the CPU timer measurement on or off\n" -; +#if defined(SQLITE_ENABLE_SESSION) +/* +** Print help information for the ".sessions" command +*/ +void session_help(ShellState *p){ + raw_printf(p->out, + ".session ?NAME? SUBCOMMAND ?ARGS...?\n" + "If ?NAME? is omitted, the first defined session is used.\n" + "Subcommands:\n" + " attach TABLE Attach TABLE\n" + " changeset FILE Write a changeset into FILE\n" + " close Close one session\n" + " enable ?BOOLEAN? Set or query the enable bit\n" + " filter GLOB... Reject tables matching GLOBs\n" + " indirect ?BOOLEAN? Mark or query the indirect status\n" + " isempty Query whether the session is empty\n" + " list List currently open session names\n" + " open DB NAME Open a new session on DB\n" + " patchset FILE Write a patchset into FILE\n" + ); +} +#endif + /* Forward reference */ -static int process_input(struct callback_data *p, FILE *in); +static int process_input(ShellState *p, FILE *in); + +/* +** Read the content of file zName into memory obtained from sqlite3_malloc64() +** and return a pointer to the buffer. The caller is responsible for freeing +** the memory. +** +** If parameter pnByte is not NULL, (*pnByte) is set to the number of bytes +** read. +** +** For convenience, a nul-terminator byte is always appended to the data read +** from the file before the buffer is returned. This byte is not included in +** the final value of (*pnByte), if applicable. +** +** NULL is returned if any error is encountered. The final value of *pnByte +** is undefined in this case. +*/ +static char *readFile(const char *zName, int *pnByte){ + FILE *in = fopen(zName, "rb"); + long nIn; + size_t nRead; + char *pBuf; + if( in==0 ) return 0; + fseek(in, 0, SEEK_END); + nIn = ftell(in); + rewind(in); + pBuf = sqlite3_malloc64( nIn+1 ); + if( pBuf==0 ) return 0; + nRead = fread(pBuf, nIn, 1, in); + fclose(in); + if( nRead!=1 ){ + sqlite3_free(pBuf); + return 0; + } + pBuf[nIn] = 0; + if( pnByte ) *pnByte = nIn; + return pBuf; +} + +/* +** Implementation of the "readfile(X)" SQL function. The entire content +** of the file named X is read and returned as a BLOB. NULL is returned +** if the file does not exist or is unreadable. +*/ +static void readfileFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *zName; + void *pBuf; + int nBuf; + + UNUSED_PARAMETER(argc); + zName = (const char*)sqlite3_value_text(argv[0]); + if( zName==0 ) return; + pBuf = readFile(zName, &nBuf); + if( pBuf ) sqlite3_result_blob(context, pBuf, nBuf, sqlite3_free); +} + +/* +** Implementation of the "writefile(X,Y)" SQL function. The argument Y +** is written into file X. The number of bytes written is returned. Or +** NULL is returned if something goes wrong, such as being unable to open +** file X for writing. +*/ +static void writefileFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + FILE *out; + const char *z; + sqlite3_int64 rc; + const char *zFile; + + UNUSED_PARAMETER(argc); + zFile = (const char*)sqlite3_value_text(argv[0]); + if( zFile==0 ) return; + out = fopen(zFile, "wb"); + if( out==0 ) return; + z = (const char*)sqlite3_value_blob(argv[1]); + if( z==0 ){ + rc = 0; + }else{ + rc = fwrite(z, 1, sqlite3_value_bytes(argv[1]), out); + } + fclose(out); + sqlite3_result_int64(context, rc); +} + +#if defined(SQLITE_ENABLE_SESSION) +/* +** Close a single OpenSession object and release all of its associated +** resources. +*/ +static void session_close(OpenSession *pSession){ + int i; + sqlite3session_delete(pSession->p); + sqlite3_free(pSession->zName); + for(i=0; inFilter; i++){ + sqlite3_free(pSession->azFilter[i]); + } + sqlite3_free(pSession->azFilter); + memset(pSession, 0, sizeof(OpenSession)); +} +#endif + +/* +** Close all OpenSession objects and release all associated resources. +*/ +#if defined(SQLITE_ENABLE_SESSION) +static void session_close_all(ShellState *p){ + int i; + for(i=0; inSession; i++){ + session_close(&p->aSession[i]); + } + p->nSession = 0; +} +#else +# define session_close_all(X) +#endif + +/* +** Implementation of the xFilter function for an open session. Omit +** any tables named by ".session filter" but let all other table through. +*/ +#if defined(SQLITE_ENABLE_SESSION) +static int session_filter(void *pCtx, const char *zTab){ + OpenSession *pSession = (OpenSession*)pCtx; + int i; + for(i=0; inFilter; i++){ + if( sqlite3_strglob(pSession->azFilter[i], zTab)==0 ) return 0; + } + return 1; +} +#endif /* ** Make sure the database is open. If it is not, then open it. If ** the database fails to open, print an error message and exit. */ -static void open_db(struct callback_data *p, int keepAlive){ +static void open_db(ShellState *p, int keepAlive){ if( p->db==0 ){ sqlite3_initialize(); sqlite3_open(p->zDbFilename, &p->db); - db = p->db; - if( db && sqlite3_errcode(db)==SQLITE_OK ){ - sqlite3_create_function(db, "shellstatic", 0, SQLITE_UTF8, 0, + globalDb = p->db; + if( p->db && sqlite3_errcode(p->db)==SQLITE_OK ){ + sqlite3_create_function(p->db, "shellstatic", 0, SQLITE_UTF8, 0, shellstaticFunc, 0, 0); } - if( db==0 || SQLITE_OK!=sqlite3_errcode(db) ){ - fprintf(stderr,"Error: unable to open database \"%s\": %s\n", - p->zDbFilename, sqlite3_errmsg(db)); + if( p->db==0 || SQLITE_OK!=sqlite3_errcode(p->db) ){ + utf8_printf(stderr,"Error: unable to open database \"%s\": %s\n", + p->zDbFilename, sqlite3_errmsg(p->db)); if( keepAlive ) return; exit(1); } #ifndef SQLITE_OMIT_LOAD_EXTENSION sqlite3_enable_load_extension(p->db, 1); #endif + sqlite3_create_function(p->db, "readfile", 1, SQLITE_UTF8, 0, + readfileFunc, 0, 0); + sqlite3_create_function(p->db, "writefile", 2, SQLITE_UTF8, 0, + writefileFunc, 0, 0); } } /* ** Do C-language style dequoting. ** +** \a -> alarm +** \b -> backspace ** \t -> tab ** \n -> newline +** \v -> vertical tab +** \f -> form feed ** \r -> carriage return +** \s -> space ** \" -> " -** \NNN -> ascii character NNN in octal +** \' -> ' ** \\ -> backslash +** \NNN -> ascii character NNN in octal */ static void resolve_backslashes(char *z){ int i, j; char c; + while( *z && *z!='\\' ) z++; for(i=j=0; (c = z[i])!=0; i++, j++){ - if( c=='\\' ){ + if( c=='\\' && z[i+1]!=0 ){ c = z[++i]; - if( c=='n' ){ - c = '\n'; + if( c=='a' ){ + c = '\a'; + }else if( c=='b' ){ + c = '\b'; }else if( c=='t' ){ c = '\t'; + }else if( c=='n' ){ + c = '\n'; + }else if( c=='v' ){ + c = '\v'; + }else if( c=='f' ){ + c = '\f'; }else if( c=='r' ){ c = '\r'; + }else if( c=='"' ){ + c = '"'; + }else if( c=='\'' ){ + c = '\''; }else if( c=='\\' ){ c = '\\'; }else if( c>='0' && c<='7' ){ @@ -1667,7 +2502,7 @@ static void resolve_backslashes(char *z){ } z[j] = c; } - z[j] = 0; + if( j0 && z[i-1]==';' ){ i--; } + utf8_printf(f, "%.*s;\n", i, z); + } + return 0; } +#endif +#endif /* ** A no-op routine that runs with the ".breakpoint" doc-command. This is @@ -1797,10 +2649,10 @@ static void test_breakpoint(void){ } /* -** An object used to read a CSV file +** An object used to read a CSV and other files for import. */ -typedef struct CSVReader CSVReader; -struct CSVReader { +typedef struct ImportCtx ImportCtx; +struct ImportCtx { const char *zFile; /* Name of the input file */ FILE *in; /* Read the CSV text from this input stream */ char *z; /* Accumulated text for a field */ @@ -1808,16 +2660,17 @@ struct CSVReader { int nAlloc; /* Space allocated for z[] */ int nLine; /* Current line number */ int cTerm; /* Character that terminated the most recent field */ - int cSeparator; /* The separator character. (Usually ",") */ + int cColSep; /* The column separator character. (Usually ",") */ + int cRowSep; /* The row separator character. (Usually "\n") */ }; /* Append a single byte to z[] */ -static void csv_append_char(CSVReader *p, int c){ +static void import_append_char(ImportCtx *p, int c){ if( p->n+1>=p->nAlloc ){ p->nAlloc += p->nAlloc + 100; - p->z = sqlite3_realloc(p->z, p->nAlloc); + p->z = sqlite3_realloc64(p->z, p->nAlloc); if( p->z==0 ){ - fprintf(stderr, "out of memory\n"); + raw_printf(stderr, "out of memory\n"); exit(1); } } @@ -1829,16 +2682,18 @@ static void csv_append_char(CSVReader *p, int c){ ** ** + Input comes from p->in. ** + Store results in p->z of length p->n. Space to hold p->z comes -** from sqlite3_malloc(). -** + Use p->cSep as the separator. The default is ",". +** from sqlite3_malloc64(). +** + Use p->cSep as the column separator. The default is ",". +** + Use p->rSep as the row separator. The default is "\n". ** + Keep track of the line number in p->nLine. ** + Store the character that terminates the field in p->cTerm. Store ** EOF on end-of-file. ** + Report syntax errors on stderr */ -static char *csv_read_one_field(CSVReader *p){ - int c, pc, ppc; - int cSep = p->cSeparator; +static char *SQLITE_CDECL csv_read_one_field(ImportCtx *p){ + int c; + int cSep = p->cColSep; + int rSep = p->cRowSep; p->n = 0; c = fgetc(p->in); if( c==EOF || seenInterrupt ){ @@ -1846,12 +2701,13 @@ static char *csv_read_one_field(CSVReader *p){ return 0; } if( c=='"' ){ + int pc, ppc; int startLine = p->nLine; int cQuote = c; pc = ppc = 0; while( 1 ){ c = fgetc(p->in); - if( c=='\n' ) p->nLine++; + if( c==rSep ) p->nLine++; if( c==cQuote ){ if( pc==cQuote ){ pc = 0; @@ -1859,8 +2715,8 @@ static char *csv_read_one_field(CSVReader *p){ } } if( (c==cSep && pc==cQuote) - || (c=='\n' && pc==cQuote) - || (c=='\n' && pc=='\r' && ppc==cQuote) + || (c==rSep && pc==cQuote) + || (c==rSep && pc=='\r' && ppc==cQuote) || (c==EOF && pc==cQuote) ){ do{ p->n--; }while( p->z[p->n]!=cQuote ); @@ -1868,27 +2724,27 @@ static char *csv_read_one_field(CSVReader *p){ break; } if( pc==cQuote && c!='\r' ){ - fprintf(stderr, "%s:%d: unescaped %c character\n", + utf8_printf(stderr, "%s:%d: unescaped %c character\n", p->zFile, p->nLine, cQuote); } if( c==EOF ){ - fprintf(stderr, "%s:%d: unterminated %c-quoted field\n", + utf8_printf(stderr, "%s:%d: unterminated %c-quoted field\n", p->zFile, startLine, cQuote); - p->cTerm = EOF; + p->cTerm = c; break; } - csv_append_char(p, c); + import_append_char(p, c); ppc = pc; pc = c; } }else{ - while( c!=EOF && c!=cSep && c!='\n' ){ - csv_append_char(p, c); + while( c!=EOF && c!=cSep && c!=rSep ){ + import_append_char(p, c); c = fgetc(p->in); } - if( c=='\n' ){ + if( c==rSep ){ p->nLine++; - if( p->n>1 && p->z[p->n-1]=='\r' ) p->n--; + if( p->n>0 && p->z[p->n-1]=='\r' ) p->n--; } p->cTerm = c; } @@ -1896,14 +2752,774 @@ static char *csv_read_one_field(CSVReader *p){ return p->z; } +/* Read a single field of ASCII delimited text. +** +** + Input comes from p->in. +** + Store results in p->z of length p->n. Space to hold p->z comes +** from sqlite3_malloc64(). +** + Use p->cSep as the column separator. The default is "\x1F". +** + Use p->rSep as the row separator. The default is "\x1E". +** + Keep track of the row number in p->nLine. +** + Store the character that terminates the field in p->cTerm. Store +** EOF on end-of-file. +** + Report syntax errors on stderr +*/ +static char *SQLITE_CDECL ascii_read_one_field(ImportCtx *p){ + int c; + int cSep = p->cColSep; + int rSep = p->cRowSep; + p->n = 0; + c = fgetc(p->in); + if( c==EOF || seenInterrupt ){ + p->cTerm = EOF; + return 0; + } + while( c!=EOF && c!=cSep && c!=rSep ){ + import_append_char(p, c); + c = fgetc(p->in); + } + if( c==rSep ){ + p->nLine++; + } + p->cTerm = c; + if( p->z ) p->z[p->n] = 0; + return p->z; +} + +/* +** Try to transfer data for table zTable. If an error is seen while +** moving forward, try to go backwards. The backwards movement won't +** work for WITHOUT ROWID tables. +*/ +static void tryToCloneData( + ShellState *p, + sqlite3 *newDb, + const char *zTable +){ + sqlite3_stmt *pQuery = 0; + sqlite3_stmt *pInsert = 0; + char *zQuery = 0; + char *zInsert = 0; + int rc; + int i, j, n; + int nTable = (int)strlen(zTable); + int k = 0; + int cnt = 0; + const int spinRate = 10000; + + zQuery = sqlite3_mprintf("SELECT * FROM \"%w\"", zTable); + rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); + if( rc ){ + utf8_printf(stderr, "Error %d: %s on [%s]\n", + sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), + zQuery); + goto end_data_xfer; + } + n = sqlite3_column_count(pQuery); + zInsert = sqlite3_malloc64(200 + nTable + n*3); + if( zInsert==0 ){ + raw_printf(stderr, "out of memory\n"); + goto end_data_xfer; + } + sqlite3_snprintf(200+nTable,zInsert, + "INSERT OR IGNORE INTO \"%s\" VALUES(?", zTable); + i = (int)strlen(zInsert); + for(j=1; jdb, zQuery, -1, &pQuery, 0); + if( rc ){ + utf8_printf(stderr, "Warning: cannot step \"%s\" backwards", zTable); + break; + } + } /* End for(k=0...) */ + +end_data_xfer: + sqlite3_finalize(pQuery); + sqlite3_finalize(pInsert); + sqlite3_free(zQuery); + sqlite3_free(zInsert); +} + + +/* +** Try to transfer all rows of the schema that match zWhere. For +** each row, invoke xForEach() on the object defined by that row. +** If an error is encountered while moving forward through the +** sqlite_master table, try again moving backwards. +*/ +static void tryToCloneSchema( + ShellState *p, + sqlite3 *newDb, + const char *zWhere, + void (*xForEach)(ShellState*,sqlite3*,const char*) +){ + sqlite3_stmt *pQuery = 0; + char *zQuery = 0; + int rc; + const unsigned char *zName; + const unsigned char *zSql; + char *zErrMsg = 0; + + zQuery = sqlite3_mprintf("SELECT name, sql FROM sqlite_master" + " WHERE %s", zWhere); + rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); + if( rc ){ + utf8_printf(stderr, "Error: (%d) %s on [%s]\n", + sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), + zQuery); + goto end_schema_xfer; + } + while( (rc = sqlite3_step(pQuery))==SQLITE_ROW ){ + zName = sqlite3_column_text(pQuery, 0); + zSql = sqlite3_column_text(pQuery, 1); + printf("%s... ", zName); fflush(stdout); + sqlite3_exec(newDb, (const char*)zSql, 0, 0, &zErrMsg); + if( zErrMsg ){ + utf8_printf(stderr, "Error: %s\nSQL: [%s]\n", zErrMsg, zSql); + sqlite3_free(zErrMsg); + zErrMsg = 0; + } + if( xForEach ){ + xForEach(p, newDb, (const char*)zName); + } + printf("done\n"); + } + if( rc!=SQLITE_DONE ){ + sqlite3_finalize(pQuery); + sqlite3_free(zQuery); + zQuery = sqlite3_mprintf("SELECT name, sql FROM sqlite_master" + " WHERE %s ORDER BY rowid DESC", zWhere); + rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); + if( rc ){ + utf8_printf(stderr, "Error: (%d) %s on [%s]\n", + sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), + zQuery); + goto end_schema_xfer; + } + while( (rc = sqlite3_step(pQuery))==SQLITE_ROW ){ + zName = sqlite3_column_text(pQuery, 0); + zSql = sqlite3_column_text(pQuery, 1); + printf("%s... ", zName); fflush(stdout); + sqlite3_exec(newDb, (const char*)zSql, 0, 0, &zErrMsg); + if( zErrMsg ){ + utf8_printf(stderr, "Error: %s\nSQL: [%s]\n", zErrMsg, zSql); + sqlite3_free(zErrMsg); + zErrMsg = 0; + } + if( xForEach ){ + xForEach(p, newDb, (const char*)zName); + } + printf("done\n"); + } + } +end_schema_xfer: + sqlite3_finalize(pQuery); + sqlite3_free(zQuery); +} + +/* +** Open a new database file named "zNewDb". Try to recover as much information +** as possible out of the main database (which might be corrupt) and write it +** into zNewDb. +*/ +static void tryToClone(ShellState *p, const char *zNewDb){ + int rc; + sqlite3 *newDb = 0; + if( access(zNewDb,0)==0 ){ + utf8_printf(stderr, "File \"%s\" already exists.\n", zNewDb); + return; + } + rc = sqlite3_open(zNewDb, &newDb); + if( rc ){ + utf8_printf(stderr, "Cannot create output database: %s\n", + sqlite3_errmsg(newDb)); + }else{ + sqlite3_exec(p->db, "PRAGMA writable_schema=ON;", 0, 0, 0); + sqlite3_exec(newDb, "BEGIN EXCLUSIVE;", 0, 0, 0); + tryToCloneSchema(p, newDb, "type='table'", tryToCloneData); + tryToCloneSchema(p, newDb, "type!='table'", 0); + sqlite3_exec(newDb, "COMMIT;", 0, 0, 0); + sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0); + } + sqlite3_close(newDb); +} + +/* +** Change the output file back to stdout +*/ +static void output_reset(ShellState *p){ + if( p->outfile[0]=='|' ){ +#ifndef SQLITE_OMIT_POPEN + pclose(p->out); +#endif + }else{ + output_file_close(p->out); + } + p->outfile[0] = 0; + p->out = stdout; +} + +/* +** Run an SQL command and return the single integer result. +*/ +static int db_int(ShellState *p, const char *zSql){ + sqlite3_stmt *pStmt; + int res = 0; + sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){ + res = sqlite3_column_int(pStmt,0); + } + sqlite3_finalize(pStmt); + return res; +} + +/* +** Convert a 2-byte or 4-byte big-endian integer into a native integer +*/ +static unsigned int get2byteInt(unsigned char *a){ + return (a[0]<<8) + a[1]; +} +static unsigned int get4byteInt(unsigned char *a){ + return (a[0]<<24) + (a[1]<<16) + (a[2]<<8) + a[3]; +} + +/* +** Implementation of the ".info" command. +** +** Return 1 on error, 2 to exit, and 0 otherwise. +*/ +static int shell_dbinfo_command(ShellState *p, int nArg, char **azArg){ + static const struct { const char *zName; int ofst; } aField[] = { + { "file change counter:", 24 }, + { "database page count:", 28 }, + { "freelist page count:", 36 }, + { "schema cookie:", 40 }, + { "schema format:", 44 }, + { "default cache size:", 48 }, + { "autovacuum top root:", 52 }, + { "incremental vacuum:", 64 }, + { "text encoding:", 56 }, + { "user version:", 60 }, + { "application id:", 68 }, + { "software version:", 96 }, + }; + static const struct { const char *zName; const char *zSql; } aQuery[] = { + { "number of tables:", + "SELECT count(*) FROM %s WHERE type='table'" }, + { "number of indexes:", + "SELECT count(*) FROM %s WHERE type='index'" }, + { "number of triggers:", + "SELECT count(*) FROM %s WHERE type='trigger'" }, + { "number of views:", + "SELECT count(*) FROM %s WHERE type='view'" }, + { "schema size:", + "SELECT total(length(sql)) FROM %s" }, + }; + sqlite3_file *pFile = 0; + int i; + char *zSchemaTab; + char *zDb = nArg>=2 ? azArg[1] : "main"; + unsigned char aHdr[100]; + open_db(p, 0); + if( p->db==0 ) return 1; + sqlite3_file_control(p->db, zDb, SQLITE_FCNTL_FILE_POINTER, &pFile); + if( pFile==0 || pFile->pMethods==0 || pFile->pMethods->xRead==0 ){ + return 1; + } + i = pFile->pMethods->xRead(pFile, aHdr, 100, 0); + if( i!=SQLITE_OK ){ + raw_printf(stderr, "unable to read database header\n"); + return 1; + } + i = get2byteInt(aHdr+16); + if( i==1 ) i = 65536; + utf8_printf(p->out, "%-20s %d\n", "database page size:", i); + utf8_printf(p->out, "%-20s %d\n", "write format:", aHdr[18]); + utf8_printf(p->out, "%-20s %d\n", "read format:", aHdr[19]); + utf8_printf(p->out, "%-20s %d\n", "reserved bytes:", aHdr[20]); + for(i=0; iout, "%-20s %u", aField[i].zName, val); + switch( ofst ){ + case 56: { + if( val==1 ) raw_printf(p->out, " (utf8)"); + if( val==2 ) raw_printf(p->out, " (utf16le)"); + if( val==3 ) raw_printf(p->out, " (utf16be)"); + } + } + raw_printf(p->out, "\n"); + } + if( zDb==0 ){ + zSchemaTab = sqlite3_mprintf("main.sqlite_master"); + }else if( strcmp(zDb,"temp")==0 ){ + zSchemaTab = sqlite3_mprintf("%s", "sqlite_temp_master"); + }else{ + zSchemaTab = sqlite3_mprintf("\"%w\".sqlite_master", zDb); + } + for(i=0; iout, "%-20s %d\n", aQuery[i].zName, val); + } + sqlite3_free(zSchemaTab); + return 0; +} + +/* +** Print the current sqlite3_errmsg() value to stderr and return 1. +*/ +static int shellDatabaseError(sqlite3 *db){ + const char *zErr = sqlite3_errmsg(db); + utf8_printf(stderr, "Error: %s\n", zErr); + return 1; +} + +/* +** Print an out-of-memory message to stderr and return 1. +*/ +static int shellNomemError(void){ + raw_printf(stderr, "Error: out of memory\n"); + return 1; +} + +/* +** Compare the pattern in zGlob[] against the text in z[]. Return TRUE +** if they match and FALSE (0) if they do not match. +** +** Globbing rules: +** +** '*' Matches any sequence of zero or more characters. +** +** '?' Matches exactly one character. +** +** [...] Matches one character from the enclosed list of +** characters. +** +** [^...] Matches one character not in the enclosed list. +** +** '#' Matches any sequence of one or more digits with an +** optional + or - sign in front +** +** ' ' Any span of whitespace matches any other span of +** whitespace. +** +** Extra whitespace at the end of z[] is ignored. +*/ +static int testcase_glob(const char *zGlob, const char *z){ + int c, c2; + int invert; + int seen; + + while( (c = (*(zGlob++)))!=0 ){ + if( IsSpace(c) ){ + if( !IsSpace(*z) ) return 0; + while( IsSpace(*zGlob) ) zGlob++; + while( IsSpace(*z) ) z++; + }else if( c=='*' ){ + while( (c=(*(zGlob++))) == '*' || c=='?' ){ + if( c=='?' && (*(z++))==0 ) return 0; + } + if( c==0 ){ + return 1; + }else if( c=='[' ){ + while( *z && testcase_glob(zGlob-1,z)==0 ){ + z++; + } + return (*z)!=0; + } + while( (c2 = (*(z++)))!=0 ){ + while( c2!=c ){ + c2 = *(z++); + if( c2==0 ) return 0; + } + if( testcase_glob(zGlob,z) ) return 1; + } + return 0; + }else if( c=='?' ){ + if( (*(z++))==0 ) return 0; + }else if( c=='[' ){ + int prior_c = 0; + seen = 0; + invert = 0; + c = *(z++); + if( c==0 ) return 0; + c2 = *(zGlob++); + if( c2=='^' ){ + invert = 1; + c2 = *(zGlob++); + } + if( c2==']' ){ + if( c==']' ) seen = 1; + c2 = *(zGlob++); + } + while( c2 && c2!=']' ){ + if( c2=='-' && zGlob[0]!=']' && zGlob[0]!=0 && prior_c>0 ){ + c2 = *(zGlob++); + if( c>=prior_c && c<=c2 ) seen = 1; + prior_c = 0; + }else{ + if( c==c2 ){ + seen = 1; + } + prior_c = c2; + } + c2 = *(zGlob++); + } + if( c2==0 || (seen ^ invert)==0 ) return 0; + }else if( c=='#' ){ + if( (z[0]=='-' || z[0]=='+') && IsDigit(z[1]) ) z++; + if( !IsDigit(z[0]) ) return 0; + z++; + while( IsDigit(z[0]) ){ z++; } + }else{ + if( c!=(*(z++)) ) return 0; + } + } + while( IsSpace(*z) ){ z++; } + return *z==0; +} + + +/* +** Compare the string as a command-line option with either one or two +** initial "-" characters. +*/ +static int optionMatch(const char *zStr, const char *zOpt){ + if( zStr[0]!='-' ) return 0; + zStr++; + if( zStr[0]=='-' ) zStr++; + return strcmp(zStr, zOpt)==0; +} + +/* +** Delete a file. +*/ +static int shellDeleteFile(const char *zFilename){ + int rc; +#ifdef _WIN32 + wchar_t *z = sqlite3_win32_utf8_to_unicode(zFilename); + rc = _wunlink(z); + sqlite3_free(z); +#else + rc = unlink(zFilename); +#endif + return rc; +} + + +/* +** The implementation of SQL scalar function fkey_collate_clause(), used +** by the ".lint fkey-indexes" command. This scalar function is always +** called with four arguments - the parent table name, the parent column name, +** the child table name and the child column name. +** +** fkey_collate_clause('parent-tab', 'parent-col', 'child-tab', 'child-col') +** +** If either of the named tables or columns do not exist, this function +** returns an empty string. An empty string is also returned if both tables +** and columns exist but have the same default collation sequence. Or, +** if both exist but the default collation sequences are different, this +** function returns the string " COLLATE ", where +** is the default collation sequence of the parent column. +*/ +static void shellFkeyCollateClause( + sqlite3_context *pCtx, + int nVal, + sqlite3_value **apVal +){ + sqlite3 *db = sqlite3_context_db_handle(pCtx); + const char *zParent; + const char *zParentCol; + const char *zParentSeq; + const char *zChild; + const char *zChildCol; + const char *zChildSeq = 0; /* Initialize to avoid false-positive warning */ + int rc; + + assert( nVal==4 ); + zParent = (const char*)sqlite3_value_text(apVal[0]); + zParentCol = (const char*)sqlite3_value_text(apVal[1]); + zChild = (const char*)sqlite3_value_text(apVal[2]); + zChildCol = (const char*)sqlite3_value_text(apVal[3]); + + sqlite3_result_text(pCtx, "", -1, SQLITE_STATIC); + rc = sqlite3_table_column_metadata( + db, "main", zParent, zParentCol, 0, &zParentSeq, 0, 0, 0 + ); + if( rc==SQLITE_OK ){ + rc = sqlite3_table_column_metadata( + db, "main", zChild, zChildCol, 0, &zChildSeq, 0, 0, 0 + ); + } + + if( rc==SQLITE_OK && sqlite3_stricmp(zParentSeq, zChildSeq) ){ + char *z = sqlite3_mprintf(" COLLATE %s", zParentSeq); + sqlite3_result_text(pCtx, z, -1, SQLITE_TRANSIENT); + sqlite3_free(z); + } +} + + +/* +** The implementation of dot-command ".lint fkey-indexes". +*/ +static int lintFkeyIndexes( + ShellState *pState, /* Current shell tool state */ + char **azArg, /* Array of arguments passed to dot command */ + int nArg /* Number of entries in azArg[] */ +){ + sqlite3 *db = pState->db; /* Database handle to query "main" db of */ + FILE *out = pState->out; /* Stream to write non-error output to */ + int bVerbose = 0; /* If -verbose is present */ + int bGroupByParent = 0; /* If -groupbyparent is present */ + int i; /* To iterate through azArg[] */ + const char *zIndent = ""; /* How much to indent CREATE INDEX by */ + int rc; /* Return code */ + sqlite3_stmt *pSql = 0; /* Compiled version of SQL statement below */ + + /* + ** This SELECT statement returns one row for each foreign key constraint + ** in the schema of the main database. The column values are: + ** + ** 0. The text of an SQL statement similar to: + ** + ** "EXPLAIN QUERY PLAN SELECT rowid FROM child_table WHERE child_key=?" + ** + ** This is the same SELECT that the foreign keys implementation needs + ** to run internally on child tables. If there is an index that can + ** be used to optimize this query, then it can also be used by the FK + ** implementation to optimize DELETE or UPDATE statements on the parent + ** table. + ** + ** 1. A GLOB pattern suitable for sqlite3_strglob(). If the plan output by + ** the EXPLAIN QUERY PLAN command matches this pattern, then the schema + ** contains an index that can be used to optimize the query. + ** + ** 2. Human readable text that describes the child table and columns. e.g. + ** + ** "child_table(child_key1, child_key2)" + ** + ** 3. Human readable text that describes the parent table and columns. e.g. + ** + ** "parent_table(parent_key1, parent_key2)" + ** + ** 4. A full CREATE INDEX statement for an index that could be used to + ** optimize DELETE or UPDATE statements on the parent table. e.g. + ** + ** "CREATE INDEX child_table_child_key ON child_table(child_key)" + ** + ** 5. The name of the parent table. + ** + ** These six values are used by the C logic below to generate the report. + */ + const char *zSql = + "SELECT " + " 'EXPLAIN QUERY PLAN SELECT rowid FROM ' || quote(s.name) || ' WHERE '" + " || group_concat(quote(s.name) || '.' || quote(f.[from]) || '=?' " + " || fkey_collate_clause(f.[table], f.[to], s.name, f.[from]),' AND ')" + ", " + " 'SEARCH TABLE ' || s.name || ' USING COVERING INDEX*('" + " || group_concat('*=?', ' AND ') || ')'" + ", " + " s.name || '(' || group_concat(f.[from], ', ') || ')'" + ", " + " f.[table] || '(' || group_concat(COALESCE(f.[to], " + " (SELECT name FROM pragma_table_info(f.[table]) WHERE pk=seq+1)" + " )) || ')'" + ", " + " 'CREATE INDEX ' || quote(s.name ||'_'|| group_concat(f.[from], '_'))" + " || ' ON ' || quote(s.name) || '('" + " || group_concat(quote(f.[from]) ||" + " fkey_collate_clause(f.[table], f.[to], s.name, f.[from]), ', ')" + " || ');'" + ", " + " f.[table] " + + "FROM sqlite_master AS s, pragma_foreign_key_list(s.name) AS f " + "GROUP BY s.name, f.id " + "ORDER BY (CASE WHEN ? THEN f.[table] ELSE s.name END)" + ; + + for(i=2; i1 && sqlite3_strnicmp("-verbose", azArg[i], n)==0 ){ + bVerbose = 1; + } + else if( n>1 && sqlite3_strnicmp("-groupbyparent", azArg[i], n)==0 ){ + bGroupByParent = 1; + zIndent = " "; + } + else{ + raw_printf(stderr, "Usage: %s %s ?-verbose? ?-groupbyparent?\n", + azArg[0], azArg[1] + ); + return SQLITE_ERROR; + } + } + + /* Register the fkey_collate_clause() SQL function */ + rc = sqlite3_create_function(db, "fkey_collate_clause", 4, SQLITE_UTF8, + 0, shellFkeyCollateClause, 0, 0 + ); + + + if( rc==SQLITE_OK ){ + rc = sqlite3_prepare_v2(db, zSql, -1, &pSql, 0); + } + if( rc==SQLITE_OK ){ + sqlite3_bind_int(pSql, 1, bGroupByParent); + } + + if( rc==SQLITE_OK ){ + int rc2; + char *zPrev = 0; + while( SQLITE_ROW==sqlite3_step(pSql) ){ + int res = -1; + sqlite3_stmt *pExplain = 0; + const char *zEQP = (const char*)sqlite3_column_text(pSql, 0); + const char *zGlob = (const char*)sqlite3_column_text(pSql, 1); + const char *zFrom = (const char*)sqlite3_column_text(pSql, 2); + const char *zTarget = (const char*)sqlite3_column_text(pSql, 3); + const char *zCI = (const char*)sqlite3_column_text(pSql, 4); + const char *zParent = (const char*)sqlite3_column_text(pSql, 5); + + rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); + if( rc!=SQLITE_OK ) break; + if( SQLITE_ROW==sqlite3_step(pExplain) ){ + const char *zPlan = (const char*)sqlite3_column_text(pExplain, 3); + res = (0==sqlite3_strglob(zGlob, zPlan)); + } + rc = sqlite3_finalize(pExplain); + if( rc!=SQLITE_OK ) break; + + if( res<0 ){ + raw_printf(stderr, "Error: internal error"); + break; + }else{ + if( bGroupByParent + && (bVerbose || res==0) + && (zPrev==0 || sqlite3_stricmp(zParent, zPrev)) + ){ + raw_printf(out, "-- Parent table %s\n", zParent); + sqlite3_free(zPrev); + zPrev = sqlite3_mprintf("%s", zParent); + } + + if( res==0 ){ + raw_printf(out, "%s%s --> %s\n", zIndent, zCI, zTarget); + }else if( bVerbose ){ + raw_printf(out, "%s/* no extra indexes required for %s -> %s */\n", + zIndent, zFrom, zTarget + ); + } + } + } + sqlite3_free(zPrev); + + if( rc!=SQLITE_OK ){ + raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); + } + + rc2 = sqlite3_finalize(pSql); + if( rc==SQLITE_OK && rc2!=SQLITE_OK ){ + rc = rc2; + raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); + } + }else{ + raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); + } + + return rc; +} + +/* +** Implementation of ".lint" dot command. +*/ +static int lintDotCommand( + ShellState *pState, /* Current shell tool state */ + char **azArg, /* Array of arguments passed to dot command */ + int nArg /* Number of entries in azArg[] */ +){ + int n; + n = (nArg>=2 ? (int)strlen(azArg[1]) : 0); + if( n<1 || sqlite3_strnicmp(azArg[1], "fkey-indexes", n) ) goto usage; + return lintFkeyIndexes(pState, azArg, nArg); + + usage: + raw_printf(stderr, "Usage %s sub-command ?switches...?\n", azArg[0]); + raw_printf(stderr, "Where sub-commands are:\n"); + raw_printf(stderr, " fkey-indexes\n"); + return SQLITE_ERROR; +} + + /* ** If an input line begins with "." then invoke this routine to ** process that line. ** ** Return 1 on error, 2 to exit, and 0 otherwise. */ -static int do_meta_command(char *zLine, struct callback_data *p){ - int i = 1; +static int do_meta_command(char *zLine, ShellState *p){ + int h = 1; int nArg = 0; int n, c; int rc = 0; @@ -1911,24 +3527,24 @@ static int do_meta_command(char *zLine, struct callback_data *p){ /* Parse the input line into tokens. */ - while( zLine[i] && nArg=3 && strncmp(azArg[0], "backup", n)==0 ){ + +#ifndef SQLITE_OMIT_AUTHORIZATION + if( c=='a' && strncmp(azArg[0], "auth", n)==0 ){ + if( nArg!=2 ){ + raw_printf(stderr, "Usage: .auth ON|OFF\n"); + rc = 1; + goto meta_command_exit; + } + open_db(p, 0); + if( booleanValue(azArg[1]) ){ + sqlite3_set_authorizer(p->db, shellAuth, p); + }else{ + sqlite3_set_authorizer(p->db, 0, 0); + } + }else +#endif + + if( (c=='b' && n>=3 && strncmp(azArg[0], "backup", n)==0) + || (c=='s' && n>=3 && strncmp(azArg[0], "save", n)==0) + ){ const char *zDestFile = 0; const char *zDb = 0; sqlite3 *pDest; @@ -1950,7 +3585,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){ while( z[0]=='-' ) z++; /* No options to process at this time */ { - fprintf(stderr, "unknown option: %s\n", azArg[j]); + utf8_printf(stderr, "unknown option: %s\n", azArg[j]); return 1; } }else if( zDestFile==0 ){ @@ -1959,25 +3594,25 @@ static int do_meta_command(char *zLine, struct callback_data *p){ zDb = zDestFile; zDestFile = azArg[j]; }else{ - fprintf(stderr, "too many arguments to .backup\n"); + raw_printf(stderr, "too many arguments to .backup\n"); return 1; } } if( zDestFile==0 ){ - fprintf(stderr, "missing FILENAME argument on .backup\n"); + raw_printf(stderr, "missing FILENAME argument on .backup\n"); return 1; } if( zDb==0 ) zDb = "main"; rc = sqlite3_open(zDestFile, &pDest); if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zDestFile); + utf8_printf(stderr, "Error: cannot open \"%s\"\n", zDestFile); sqlite3_close(pDest); return 1; } open_db(p, 0); pBackup = sqlite3_backup_init(pDest, "main", p->db, zDb); if( pBackup==0 ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); + utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); sqlite3_close(pDest); return 1; } @@ -1986,14 +3621,32 @@ static int do_meta_command(char *zLine, struct callback_data *p){ if( rc==SQLITE_DONE ){ rc = 0; }else{ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); + utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); rc = 1; } sqlite3_close(pDest); }else - if( c=='b' && n>=3 && strncmp(azArg[0], "bail", n)==0 && nArg>1 && nArg<3 ){ - bail_on_error = booleanValue(azArg[1]); + if( c=='b' && n>=3 && strncmp(azArg[0], "bail", n)==0 ){ + if( nArg==2 ){ + bail_on_error = booleanValue(azArg[1]); + }else{ + raw_printf(stderr, "Usage: .bail on|off\n"); + rc = 1; + } + }else + + if( c=='b' && n>=3 && strncmp(azArg[0], "binary", n)==0 ){ + if( nArg==2 ){ + if( booleanValue(azArg[1]) ){ + setBinaryMode(p->out, 1); + }else{ + setTextMode(p->out, 1); + } + }else{ + raw_printf(stderr, "Usage: .binary on|off\n"); + rc = 1; + } }else /* The undocumented ".breakpoint" command causes a call to the no-op @@ -2003,41 +3656,92 @@ static int do_meta_command(char *zLine, struct callback_data *p){ test_breakpoint(); }else - if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 && nArg==1 ){ - struct callback_data data; + if( c=='c' && n>=3 && strncmp(azArg[0], "changes", n)==0 ){ + if( nArg==2 ){ + p->countChanges = booleanValue(azArg[1]); + }else{ + raw_printf(stderr, "Usage: .changes on|off\n"); + rc = 1; + } + }else + + /* Cancel output redirection, if it is currently set (by .testcase) + ** Then read the content of the testcase-out.txt file and compare against + ** azArg[1]. If there are differences, report an error and exit. + */ + if( c=='c' && n>=3 && strncmp(azArg[0], "check", n)==0 ){ + char *zRes = 0; + output_reset(p); + if( nArg!=2 ){ + raw_printf(stderr, "Usage: .check GLOB-PATTERN\n"); + rc = 2; + }else if( (zRes = readFile("testcase-out.txt", 0))==0 ){ + raw_printf(stderr, "Error: cannot read 'testcase-out.txt'\n"); + rc = 2; + }else if( testcase_glob(azArg[1],zRes)==0 ){ + utf8_printf(stderr, + "testcase-%s FAILED\n Expected: [%s]\n Got: [%s]\n", + p->zTestcase, azArg[1], zRes); + rc = 2; + }else{ + utf8_printf(stdout, "testcase-%s ok\n", p->zTestcase); + p->nCheck++; + } + sqlite3_free(zRes); + }else + + if( c=='c' && strncmp(azArg[0], "clone", n)==0 ){ + if( nArg==2 ){ + tryToClone(p, azArg[1]); + }else{ + raw_printf(stderr, "Usage: .clone FILENAME\n"); + rc = 1; + } + }else + + if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 ){ + ShellState data; char *zErrMsg = 0; open_db(p, 0); memcpy(&data, p, sizeof(data)); - data.showHeader = 1; - data.mode = MODE_Column; - data.colWidth[0] = 3; - data.colWidth[1] = 15; - data.colWidth[2] = 58; + data.showHeader = 0; + data.cMode = data.mode = MODE_List; + sqlite3_snprintf(sizeof(data.colSeparator),data.colSeparator,": "); data.cnt = 0; - sqlite3_exec(p->db, "PRAGMA database_list; ", callback, &data, &zErrMsg); + sqlite3_exec(p->db, "SELECT name, file FROM pragma_database_list", + callback, &data, &zErrMsg); if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); + utf8_printf(stderr,"Error: %s\n", zErrMsg); sqlite3_free(zErrMsg); rc = 1; } }else - if( c=='d' && strncmp(azArg[0], "dump", n)==0 && nArg<3 ){ + if( c=='d' && strncmp(azArg[0], "dbinfo", n)==0 ){ + rc = shell_dbinfo_command(p, nArg, azArg); + }else + + if( c=='d' && strncmp(azArg[0], "dump", n)==0 ){ open_db(p, 0); /* When playing back a "dump", the content might appear in an order ** which causes immediate foreign key constraints to be violated. ** So disable foreign-key constraint enforcement to prevent problems. */ - fprintf(p->out, "PRAGMA foreign_keys=OFF;\n"); - fprintf(p->out, "BEGIN TRANSACTION;\n"); + if( nArg!=1 && nArg!=2 ){ + raw_printf(stderr, "Usage: .dump ?LIKE-PATTERN?\n"); + rc = 1; + goto meta_command_exit; + } + raw_printf(p->out, "PRAGMA foreign_keys=OFF;\n"); + raw_printf(p->out, "BEGIN TRANSACTION;\n"); p->writableSchema = 0; sqlite3_exec(p->db, "SAVEPOINT dump; PRAGMA writable_schema=ON", 0, 0, 0); p->nErr = 0; if( nArg==1 ){ - run_schema_dump_query(p, + run_schema_dump_query(p, "SELECT name, type, sql FROM sqlite_master " "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'" ); - run_schema_dump_query(p, + run_schema_dump_query(p, "SELECT name, type, sql FROM sqlite_master " "WHERE name=='sqlite_sequence'" ); @@ -2063,16 +3767,34 @@ static int do_meta_command(char *zLine, struct callback_data *p){ } } if( p->writableSchema ){ - fprintf(p->out, "PRAGMA writable_schema=OFF;\n"); + raw_printf(p->out, "PRAGMA writable_schema=OFF;\n"); p->writableSchema = 0; } sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0); sqlite3_exec(p->db, "RELEASE dump;", 0, 0, 0); - fprintf(p->out, p->nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n"); + raw_printf(p->out, p->nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n"); }else - if( c=='e' && strncmp(azArg[0], "echo", n)==0 && nArg>1 && nArg<3 ){ - p->echoOn = booleanValue(azArg[1]); + if( c=='e' && strncmp(azArg[0], "echo", n)==0 ){ + if( nArg==2 ){ + p->echoOn = booleanValue(azArg[1]); + }else{ + raw_printf(stderr, "Usage: .echo on|off\n"); + rc = 1; + } + }else + + if( c=='e' && strncmp(azArg[0], "eqp", n)==0 ){ + if( nArg==2 ){ + if( strcmp(azArg[1],"full")==0 ){ + p->autoEQP = 2; + }else{ + p->autoEQP = booleanValue(azArg[1]); + } + }else{ + raw_printf(stderr, "Usage: .eqp on|off|full\n"); + rc = 1; + } }else if( c=='e' && strncmp(azArg[0], "exit", n)==0 ){ @@ -2080,144 +3802,225 @@ static int do_meta_command(char *zLine, struct callback_data *p){ rc = 2; }else - if( c=='e' && strncmp(azArg[0], "explain", n)==0 && nArg<3 ){ - int val = nArg>=2 ? booleanValue(azArg[1]) : 1; - if(val == 1) { - if(!p->explainPrev.valid) { - p->explainPrev.valid = 1; - p->explainPrev.mode = p->mode; - p->explainPrev.showHeader = p->showHeader; - memcpy(p->explainPrev.colWidth,p->colWidth,sizeof(p->colWidth)); + if( c=='e' && strncmp(azArg[0], "explain", n)==0 ){ + int val = 1; + if( nArg>=2 ){ + if( strcmp(azArg[1],"auto")==0 ){ + val = 99; + }else{ + val = booleanValue(azArg[1]); } - /* We could put this code under the !p->explainValid - ** condition so that it does not execute if we are already in - ** explain mode. However, always executing it allows us an easy - ** was to reset to explain mode in case the user previously - ** did an .explain followed by a .width, .mode or .header - ** command. - */ + } + if( val==1 && p->mode!=MODE_Explain ){ + p->normalMode = p->mode; p->mode = MODE_Explain; - p->showHeader = 1; - memset(p->colWidth,0,sizeof(p->colWidth)); - p->colWidth[0] = 4; /* addr */ - p->colWidth[1] = 13; /* opcode */ - p->colWidth[2] = 4; /* P1 */ - p->colWidth[3] = 4; /* P2 */ - p->colWidth[4] = 4; /* P3 */ - p->colWidth[5] = 13; /* P4 */ - p->colWidth[6] = 2; /* P5 */ - p->colWidth[7] = 13; /* Comment */ - }else if (p->explainPrev.valid) { - p->explainPrev.valid = 0; - p->mode = p->explainPrev.mode; - p->showHeader = p->explainPrev.showHeader; - memcpy(p->colWidth,p->explainPrev.colWidth,sizeof(p->colWidth)); + p->autoExplain = 0; + }else if( val==0 ){ + if( p->mode==MODE_Explain ) p->mode = p->normalMode; + p->autoExplain = 0; + }else if( val==99 ){ + if( p->mode==MODE_Explain ) p->mode = p->normalMode; + p->autoExplain = 1; } }else - if( c=='h' && (strncmp(azArg[0], "header", n)==0 || - strncmp(azArg[0], "headers", n)==0) && nArg>1 && nArg<3 ){ - p->showHeader = booleanValue(azArg[1]); + if( c=='f' && strncmp(azArg[0], "fullschema", n)==0 ){ + ShellState data; + char *zErrMsg = 0; + int doStats = 0; + memcpy(&data, p, sizeof(data)); + data.showHeader = 0; + data.cMode = data.mode = MODE_Semi; + if( nArg==2 && optionMatch(azArg[1], "indent") ){ + data.cMode = data.mode = MODE_Pretty; + nArg = 1; + } + if( nArg!=1 ){ + raw_printf(stderr, "Usage: .fullschema ?--indent?\n"); + rc = 1; + goto meta_command_exit; + } + open_db(p, 0); + rc = sqlite3_exec(p->db, + "SELECT sql FROM" + " (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x" + " FROM sqlite_master UNION ALL" + " SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_master) " + "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' " + "ORDER BY rowid", + callback, &data, &zErrMsg + ); + if( rc==SQLITE_OK ){ + sqlite3_stmt *pStmt; + rc = sqlite3_prepare_v2(p->db, + "SELECT rowid FROM sqlite_master" + " WHERE name GLOB 'sqlite_stat[134]'", + -1, &pStmt, 0); + doStats = sqlite3_step(pStmt)==SQLITE_ROW; + sqlite3_finalize(pStmt); + } + if( doStats==0 ){ + raw_printf(p->out, "/* No STAT tables available */\n"); + }else{ + raw_printf(p->out, "ANALYZE sqlite_master;\n"); + sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_master'", + callback, &data, &zErrMsg); + data.cMode = data.mode = MODE_Insert; + data.zDestTable = "sqlite_stat1"; + shell_exec(p->db, "SELECT * FROM sqlite_stat1", + shell_callback, &data,&zErrMsg); + data.zDestTable = "sqlite_stat3"; + shell_exec(p->db, "SELECT * FROM sqlite_stat3", + shell_callback, &data,&zErrMsg); + data.zDestTable = "sqlite_stat4"; + shell_exec(p->db, "SELECT * FROM sqlite_stat4", + shell_callback, &data, &zErrMsg); + raw_printf(p->out, "ANALYZE sqlite_master;\n"); + } + }else + + if( c=='h' && strncmp(azArg[0], "headers", n)==0 ){ + if( nArg==2 ){ + p->showHeader = booleanValue(azArg[1]); + }else{ + raw_printf(stderr, "Usage: .headers on|off\n"); + rc = 1; + } }else if( c=='h' && strncmp(azArg[0], "help", n)==0 ){ - fprintf(stderr,"%s",zHelp); - if( HAS_TIMER ){ - fprintf(stderr,"%s",zTimerHelp); - } + utf8_printf(p->out, "%s", zHelp); }else - if( c=='i' && strncmp(azArg[0], "import", n)==0 && nArg==3 ){ - char *zTable = azArg[2]; /* Insert data into this table */ - char *zFile = azArg[1]; /* Name of file to extra content from */ + if( c=='i' && strncmp(azArg[0], "import", n)==0 ){ + char *zTable; /* Insert data into this table */ + char *zFile; /* Name of file to extra content from */ sqlite3_stmt *pStmt = NULL; /* A statement */ int nCol; /* Number of columns in the table */ int nByte; /* Number of bytes in an SQL string */ int i, j; /* Loop counters */ int needCommit; /* True to COMMIT or ROLLBACK at end */ - int nSep; /* Number of bytes in p->separator[] */ + int nSep; /* Number of bytes in p->colSeparator[] */ char *zSql; /* An SQL statement */ - CSVReader sCsv; /* Reader context */ - int (*xCloser)(FILE*); /* Procedure to close th3 connection */ + ImportCtx sCtx; /* Reader context */ + char *(SQLITE_CDECL *xRead)(ImportCtx*); /* Func to read one value */ + int (SQLITE_CDECL *xCloser)(FILE*); /* Func to close file */ + if( nArg!=3 ){ + raw_printf(stderr, "Usage: .import FILE TABLE\n"); + goto meta_command_exit; + } + zFile = azArg[1]; + zTable = azArg[2]; seenInterrupt = 0; - memset(&sCsv, 0, sizeof(sCsv)); + memset(&sCtx, 0, sizeof(sCtx)); open_db(p, 0); - nSep = strlen30(p->separator); + nSep = strlen30(p->colSeparator); if( nSep==0 ){ - fprintf(stderr, "Error: non-null separator required for import\n"); + raw_printf(stderr, + "Error: non-null column separator required for import\n"); return 1; } if( nSep>1 ){ - fprintf(stderr, "Error: multi-character separators not allowed" + raw_printf(stderr, "Error: multi-character column separators not allowed" " for import\n"); return 1; } - sCsv.zFile = zFile; - sCsv.nLine = 1; - if( sCsv.zFile[0]=='|' ){ - sCsv.in = popen(sCsv.zFile+1, "r"); - sCsv.zFile = ""; - xCloser = pclose; - }else{ - sCsv.in = fopen(sCsv.zFile, "rb"); - xCloser = fclose; - } - if( sCsv.in==0 ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zFile); + nSep = strlen30(p->rowSeparator); + if( nSep==0 ){ + raw_printf(stderr, "Error: non-null row separator required for import\n"); return 1; } - sCsv.cSeparator = p->separator[0]; + if( nSep==2 && p->mode==MODE_Csv && strcmp(p->rowSeparator, SEP_CrLf)==0 ){ + /* When importing CSV (only), if the row separator is set to the + ** default output row separator, change it to the default input + ** row separator. This avoids having to maintain different input + ** and output row separators. */ + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); + nSep = strlen30(p->rowSeparator); + } + if( nSep>1 ){ + raw_printf(stderr, "Error: multi-character row separators not allowed" + " for import\n"); + return 1; + } + sCtx.zFile = zFile; + sCtx.nLine = 1; + if( sCtx.zFile[0]=='|' ){ +#ifdef SQLITE_OMIT_POPEN + raw_printf(stderr, "Error: pipes are not supported in this OS\n"); + return 1; +#else + sCtx.in = popen(sCtx.zFile+1, "r"); + sCtx.zFile = ""; + xCloser = pclose; +#endif + }else{ + sCtx.in = fopen(sCtx.zFile, "rb"); + xCloser = fclose; + } + if( p->mode==MODE_Ascii ){ + xRead = ascii_read_one_field; + }else{ + xRead = csv_read_one_field; + } + if( sCtx.in==0 ){ + utf8_printf(stderr, "Error: cannot open \"%s\"\n", zFile); + return 1; + } + sCtx.cColSep = p->colSeparator[0]; + sCtx.cRowSep = p->rowSeparator[0]; zSql = sqlite3_mprintf("SELECT * FROM %s", zTable); if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); - xCloser(sCsv.in); + raw_printf(stderr, "Error: out of memory\n"); + xCloser(sCtx.in); return 1; } nByte = strlen30(zSql); - rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0); - if( rc && sqlite3_strglob("no such table: *", sqlite3_errmsg(db))==0 ){ + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + import_append_char(&sCtx, 0); /* To ensure sCtx.z is allocated */ + if( rc && sqlite3_strglob("no such table: *", sqlite3_errmsg(p->db))==0 ){ char *zCreate = sqlite3_mprintf("CREATE TABLE %s", zTable); char cSep = '('; - while( csv_read_one_field(&sCsv) ){ - zCreate = sqlite3_mprintf("%z%c\n \"%s\" TEXT", zCreate, cSep, sCsv.z); + while( xRead(&sCtx) ){ + zCreate = sqlite3_mprintf("%z%c\n \"%w\" TEXT", zCreate, cSep, sCtx.z); cSep = ','; - if( sCsv.cTerm!=sCsv.cSeparator ) break; + if( sCtx.cTerm!=sCtx.cColSep ) break; } if( cSep=='(' ){ sqlite3_free(zCreate); - sqlite3_free(sCsv.z); - xCloser(sCsv.in); - fprintf(stderr,"%s: empty file\n", sCsv.zFile); + sqlite3_free(sCtx.z); + xCloser(sCtx.in); + utf8_printf(stderr,"%s: empty file\n", sCtx.zFile); return 1; } zCreate = sqlite3_mprintf("%z\n)", zCreate); rc = sqlite3_exec(p->db, zCreate, 0, 0, 0); sqlite3_free(zCreate); if( rc ){ - fprintf(stderr, "CREATE TABLE %s(...) failed: %s\n", zTable, - sqlite3_errmsg(db)); - sqlite3_free(sCsv.z); - xCloser(sCsv.in); + utf8_printf(stderr, "CREATE TABLE %s(...) failed: %s\n", zTable, + sqlite3_errmsg(p->db)); + sqlite3_free(sCtx.z); + xCloser(sCtx.in); return 1; } - rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0); + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); } sqlite3_free(zSql); if( rc ){ if (pStmt) sqlite3_finalize(pStmt); - fprintf(stderr,"Error: %s\n", sqlite3_errmsg(db)); - xCloser(sCsv.in); + utf8_printf(stderr,"Error: %s\n", sqlite3_errmsg(p->db)); + xCloser(sCtx.in); return 1; } nCol = sqlite3_column_count(pStmt); sqlite3_finalize(pStmt); pStmt = 0; if( nCol==0 ) return 0; /* no columns, no error */ - zSql = sqlite3_malloc( nByte*2 + 20 + nCol*2 ); + zSql = sqlite3_malloc64( nByte*2 + 20 + nCol*2 ); if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); - xCloser(sCsv.in); + raw_printf(stderr, "Error: out of memory\n"); + xCloser(sCtx.in); return 1; } sqlite3_snprintf(nByte+20, zSql, "INSERT INTO \"%w\" VALUES(?", zTable); @@ -2228,98 +4031,141 @@ static int do_meta_command(char *zLine, struct callback_data *p){ } zSql[j++] = ')'; zSql[j] = 0; - rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0); + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); sqlite3_free(zSql); if( rc ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(db)); + utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); if (pStmt) sqlite3_finalize(pStmt); - xCloser(sCsv.in); + xCloser(sCtx.in); return 1; } - needCommit = sqlite3_get_autocommit(db); - if( needCommit ) sqlite3_exec(db, "BEGIN", 0, 0, 0); + needCommit = sqlite3_get_autocommit(p->db); + if( needCommit ) sqlite3_exec(p->db, "BEGIN", 0, 0, 0); do{ - int startLine = sCsv.nLine; + int startLine = sCtx.nLine; for(i=0; imode==MODE_Ascii && (z==0 || z[0]==0) && i==0 ) break; sqlite3_bind_text(pStmt, i+1, z, -1, SQLITE_TRANSIENT); - if( i=nCol ){ sqlite3_step(pStmt); rc = sqlite3_reset(pStmt); if( rc!=SQLITE_OK ){ - fprintf(stderr, "%s:%d: INSERT failed: %s\n", sCsv.zFile, startLine, - sqlite3_errmsg(db)); + utf8_printf(stderr, "%s:%d: INSERT failed: %s\n", sCtx.zFile, + startLine, sqlite3_errmsg(p->db)); } } - }while( sCsv.cTerm!=EOF ); + }while( sCtx.cTerm!=EOF ); - xCloser(sCsv.in); - sqlite3_free(sCsv.z); + xCloser(sCtx.in); + sqlite3_free(sCtx.z); sqlite3_finalize(pStmt); - if( needCommit ) sqlite3_exec(db, "COMMIT", 0, 0, 0); + if( needCommit ) sqlite3_exec(p->db, "COMMIT", 0, 0, 0); }else - if( c=='i' && strncmp(azArg[0], "indices", n)==0 && nArg<3 ){ - struct callback_data data; - char *zErrMsg = 0; +#ifndef SQLITE_UNTESTABLE + if( c=='i' && strncmp(azArg[0], "imposter", n)==0 ){ + char *zSql; + char *zCollist = 0; + sqlite3_stmt *pStmt; + int tnum = 0; + int i; + if( nArg!=3 ){ + utf8_printf(stderr, "Usage: .imposter INDEX IMPOSTER\n"); + rc = 1; + goto meta_command_exit; + } open_db(p, 0); - memcpy(&data, p, sizeof(data)); - data.showHeader = 0; - data.mode = MODE_List; - if( nArg==1 ){ - rc = sqlite3_exec(p->db, - "SELECT name FROM sqlite_master " - "WHERE type='index' AND name NOT LIKE 'sqlite_%' " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type='index' " - "ORDER BY 1", - callback, &data, &zErrMsg - ); + zSql = sqlite3_mprintf("SELECT rootpage FROM sqlite_master" + " WHERE name='%q' AND type='index'", azArg[1]); + sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + sqlite3_free(zSql); + if( sqlite3_step(pStmt)==SQLITE_ROW ){ + tnum = sqlite3_column_int(pStmt, 0); + } + sqlite3_finalize(pStmt); + if( tnum==0 ){ + utf8_printf(stderr, "no such index: \"%s\"\n", azArg[1]); + rc = 1; + goto meta_command_exit; + } + zSql = sqlite3_mprintf("PRAGMA index_xinfo='%q'", azArg[1]); + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + sqlite3_free(zSql); + i = 0; + while( sqlite3_step(pStmt)==SQLITE_ROW ){ + char zLabel[20]; + const char *zCol = (const char*)sqlite3_column_text(pStmt,2); + i++; + if( zCol==0 ){ + if( sqlite3_column_int(pStmt,1)==-1 ){ + zCol = "_ROWID_"; + }else{ + sqlite3_snprintf(sizeof(zLabel),zLabel,"expr%d",i); + zCol = zLabel; + } + } + if( zCollist==0 ){ + zCollist = sqlite3_mprintf("\"%w\"", zCol); + }else{ + zCollist = sqlite3_mprintf("%z,\"%w\"", zCollist, zCol); + } + } + sqlite3_finalize(pStmt); + zSql = sqlite3_mprintf( + "CREATE TABLE \"%w\"(%s,PRIMARY KEY(%s))WITHOUT ROWID", + azArg[2], zCollist, zCollist); + sqlite3_free(zCollist); + rc = sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->db, "main", 1, tnum); + if( rc==SQLITE_OK ){ + rc = sqlite3_exec(p->db, zSql, 0, 0, 0); + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->db, "main", 0, 0); + if( rc ){ + utf8_printf(stderr, "Error in [%s]: %s\n", zSql, sqlite3_errmsg(p->db)); + }else{ + utf8_printf(stdout, "%s;\n", zSql); + raw_printf(stdout, + "WARNING: writing to an imposter table will corrupt the index!\n" + ); + } }else{ - zShellStatic = azArg[1]; - rc = sqlite3_exec(p->db, - "SELECT name FROM sqlite_master " - "WHERE type='index' AND tbl_name LIKE shellstatic() " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type='index' AND tbl_name LIKE shellstatic() " - "ORDER BY 1", - callback, &data, &zErrMsg - ); - zShellStatic = 0; - } - if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - }else if( rc != SQLITE_OK ){ - fprintf(stderr,"Error: querying sqlite_master and sqlite_temp_master\n"); + raw_printf(stderr, "SQLITE_TESTCTRL_IMPOSTER returns %d\n", rc); rc = 1; } + sqlite3_free(zSql); }else +#endif /* !defined(SQLITE_OMIT_TEST_CONTROL) */ #ifdef SQLITE_ENABLE_IOTRACE if( c=='i' && strncmp(azArg[0], "iotrace", n)==0 ){ - extern void (*sqlite3IoTrace)(const char*, ...); + SQLITE_API extern void (SQLITE_CDECL *sqlite3IoTrace)(const char*, ...); if( iotrace && iotrace!=stdout ) fclose(iotrace); iotrace = 0; if( nArg<2 ){ @@ -2330,7 +4176,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){ }else{ iotrace = fopen(azArg[1], "w"); if( iotrace==0 ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", azArg[1]); + utf8_printf(stderr, "Error: cannot open \"%s\"\n", azArg[1]); sqlite3IoTrace = 0; rc = 1; }else{ @@ -2340,124 +4186,242 @@ static int do_meta_command(char *zLine, struct callback_data *p){ }else #endif + if( c=='l' && n>=5 && strncmp(azArg[0], "limits", n)==0 ){ + static const struct { + const char *zLimitName; /* Name of a limit */ + int limitCode; /* Integer code for that limit */ + } aLimit[] = { + { "length", SQLITE_LIMIT_LENGTH }, + { "sql_length", SQLITE_LIMIT_SQL_LENGTH }, + { "column", SQLITE_LIMIT_COLUMN }, + { "expr_depth", SQLITE_LIMIT_EXPR_DEPTH }, + { "compound_select", SQLITE_LIMIT_COMPOUND_SELECT }, + { "vdbe_op", SQLITE_LIMIT_VDBE_OP }, + { "function_arg", SQLITE_LIMIT_FUNCTION_ARG }, + { "attached", SQLITE_LIMIT_ATTACHED }, + { "like_pattern_length", SQLITE_LIMIT_LIKE_PATTERN_LENGTH }, + { "variable_number", SQLITE_LIMIT_VARIABLE_NUMBER }, + { "trigger_depth", SQLITE_LIMIT_TRIGGER_DEPTH }, + { "worker_threads", SQLITE_LIMIT_WORKER_THREADS }, + }; + int i, n2; + open_db(p, 0); + if( nArg==1 ){ + for(i=0; idb, aLimit[i].limitCode, -1)); + } + }else if( nArg>3 ){ + raw_printf(stderr, "Usage: .limit NAME ?NEW-VALUE?\n"); + rc = 1; + goto meta_command_exit; + }else{ + int iLimit = -1; + n2 = strlen30(azArg[1]); + for(i=0; idb, aLimit[iLimit].limitCode, + (int)integerValue(azArg[2])); + } + printf("%20s %d\n", aLimit[iLimit].zLimitName, + sqlite3_limit(p->db, aLimit[iLimit].limitCode, -1)); + } + }else + + if( c=='l' && n>2 && strncmp(azArg[0], "lint", n)==0 ){ + open_db(p, 0); + lintDotCommand(p, azArg, nArg); + }else + #ifndef SQLITE_OMIT_LOAD_EXTENSION - if( c=='l' && strncmp(azArg[0], "load", n)==0 && nArg>=2 ){ + if( c=='l' && strncmp(azArg[0], "load", n)==0 ){ const char *zFile, *zProc; char *zErrMsg = 0; + if( nArg<2 ){ + raw_printf(stderr, "Usage: .load FILE ?ENTRYPOINT?\n"); + rc = 1; + goto meta_command_exit; + } zFile = azArg[1]; zProc = nArg>=3 ? azArg[2] : 0; open_db(p, 0); rc = sqlite3_load_extension(p->db, zFile, zProc, &zErrMsg); if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: %s\n", zErrMsg); + utf8_printf(stderr, "Error: %s\n", zErrMsg); sqlite3_free(zErrMsg); rc = 1; } }else #endif - if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=2 ){ - const char *zFile = azArg[1]; - output_file_close(p->pLog); - p->pLog = output_file_open(zFile); + if( c=='l' && strncmp(azArg[0], "log", n)==0 ){ + if( nArg!=2 ){ + raw_printf(stderr, "Usage: .log FILENAME\n"); + rc = 1; + }else{ + const char *zFile = azArg[1]; + output_file_close(p->pLog); + p->pLog = output_file_open(zFile); + } }else - if( c=='m' && strncmp(azArg[0], "mode", n)==0 && nArg==2 ){ - int n2 = strlen30(azArg[1]); - if( (n2==4 && strncmp(azArg[1],"line",n2)==0) - || - (n2==5 && strncmp(azArg[1],"lines",n2)==0) ){ + if( c=='m' && strncmp(azArg[0], "mode", n)==0 ){ + const char *zMode = nArg>=2 ? azArg[1] : ""; + int n2 = (int)strlen(zMode); + int c2 = zMode[0]; + if( c2=='l' && n2>2 && strncmp(azArg[1],"lines",n2)==0 ){ p->mode = MODE_Line; - }else if( (n2==6 && strncmp(azArg[1],"column",n2)==0) - || - (n2==7 && strncmp(azArg[1],"columns",n2)==0) ){ + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); + }else if( c2=='c' && strncmp(azArg[1],"columns",n2)==0 ){ p->mode = MODE_Column; - }else if( n2==4 && strncmp(azArg[1],"list",n2)==0 ){ + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); + }else if( c2=='l' && n2>2 && strncmp(azArg[1],"list",n2)==0 ){ p->mode = MODE_List; - }else if( n2==4 && strncmp(azArg[1],"html",n2)==0 ){ + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Column); + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); + }else if( c2=='h' && strncmp(azArg[1],"html",n2)==0 ){ p->mode = MODE_Html; - }else if( n2==3 && strncmp(azArg[1],"tcl",n2)==0 ){ + }else if( c2=='t' && strncmp(azArg[1],"tcl",n2)==0 ){ p->mode = MODE_Tcl; - sqlite3_snprintf(sizeof(p->separator), p->separator, " "); - }else if( n2==3 && strncmp(azArg[1],"csv",n2)==0 ){ + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Space); + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); + }else if( c2=='c' && strncmp(azArg[1],"csv",n2)==0 ){ p->mode = MODE_Csv; - sqlite3_snprintf(sizeof(p->separator), p->separator, ","); - }else if( n2==4 && strncmp(azArg[1],"tabs",n2)==0 ){ + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Comma); + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_CrLf); + }else if( c2=='t' && strncmp(azArg[1],"tabs",n2)==0 ){ p->mode = MODE_List; - sqlite3_snprintf(sizeof(p->separator), p->separator, "\t"); - }else if( n2==6 && strncmp(azArg[1],"insert",n2)==0 ){ + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Tab); + }else if( c2=='i' && strncmp(azArg[1],"insert",n2)==0 ){ p->mode = MODE_Insert; - set_table_name(p, "table"); + set_table_name(p, nArg>=3 ? azArg[2] : "table"); + }else if( c2=='q' && strncmp(azArg[1],"quote",n2)==0 ){ + p->mode = MODE_Quote; + }else if( c2=='a' && strncmp(azArg[1],"ascii",n2)==0 ){ + p->mode = MODE_Ascii; + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Unit); + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Record); }else { - fprintf(stderr,"Error: mode should be one of: " - "column csv html insert line list tabs tcl\n"); + raw_printf(stderr, "Error: mode should be one of: " + "ascii column csv html insert line list quote tabs tcl\n"); rc = 1; } + p->cMode = p->mode; }else - if( c=='m' && strncmp(azArg[0], "mode", n)==0 && nArg==3 ){ - int n2 = strlen30(azArg[1]); - if( n2==6 && strncmp(azArg[1],"insert",n2)==0 ){ - p->mode = MODE_Insert; - set_table_name(p, azArg[2]); - }else { - fprintf(stderr, "Error: invalid arguments: " - " \"%s\". Enter \".help\" for help\n", azArg[2]); + if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 ){ + if( nArg==2 ){ + sqlite3_snprintf(sizeof(p->nullValue), p->nullValue, + "%.*s", (int)ArraySize(p->nullValue)-1, azArg[1]); + }else{ + raw_printf(stderr, "Usage: .nullvalue STRING\n"); rc = 1; } }else - if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 && nArg==2 ) { - sqlite3_snprintf(sizeof(p->nullvalue), p->nullvalue, - "%.*s", (int)ArraySize(p->nullvalue)-1, azArg[1]); - }else - if( c=='o' && strncmp(azArg[0], "open", n)==0 && n>=2 ){ - sqlite3 *savedDb = p->db; - const char *zSavedFilename = p->zDbFilename; - char *zNewFilename = 0; + char *zNewFilename; /* Name of the database file to open */ + int iName = 1; /* Index in azArg[] of the filename */ + int newFlag = 0; /* True to delete file before opening */ + /* Close the existing database */ + session_close_all(p); + sqlite3_close(p->db); p->db = 0; - if( nArg>=2 ){ - p->zDbFilename = zNewFilename = sqlite3_mprintf("%s", azArg[1]); + sqlite3_free(p->zFreeOnClose); + p->zFreeOnClose = 0; + /* Check for command-line arguments */ + for(iName=1; iNamedb!=0 ){ - sqlite3_close(savedDb); - sqlite3_free(p->zFreeOnClose); - p->zFreeOnClose = zNewFilename; - }else{ - sqlite3_free(zNewFilename); - p->db = savedDb; - p->zDbFilename = zSavedFilename; + /* If a filename is specified, try to open it first */ + zNewFilename = nArg>iName ? sqlite3_mprintf("%s", azArg[iName]) : 0; + if( zNewFilename ){ + if( newFlag ) shellDeleteFile(zNewFilename); + p->zDbFilename = zNewFilename; + open_db(p, 1); + if( p->db==0 ){ + utf8_printf(stderr, "Error: cannot open '%s'\n", zNewFilename); + sqlite3_free(zNewFilename); + }else{ + p->zFreeOnClose = zNewFilename; + } + } + if( p->db==0 ){ + /* As a fall-back open a TEMP database */ + p->zDbFilename = 0; + open_db(p, 0); } }else - if( c=='o' && strncmp(azArg[0], "output", n)==0 && nArg==2 ){ - if( p->outfile[0]=='|' ){ - pclose(p->out); - }else{ - output_file_close(p->out); + if( c=='o' + && (strncmp(azArg[0], "output", n)==0 || strncmp(azArg[0], "once", n)==0) + ){ + const char *zFile = nArg>=2 ? azArg[1] : "stdout"; + if( nArg>2 ){ + utf8_printf(stderr, "Usage: .%s FILE\n", azArg[0]); + rc = 1; + goto meta_command_exit; } - p->outfile[0] = 0; - if( azArg[1][0]=='|' ){ - p->out = popen(&azArg[1][1], "w"); + if( n>1 && strncmp(azArg[0], "once", n)==0 ){ + if( nArg<2 ){ + raw_printf(stderr, "Usage: .once FILE\n"); + rc = 1; + goto meta_command_exit; + } + p->outCount = 2; + }else{ + p->outCount = 0; + } + output_reset(p); + if( zFile[0]=='|' ){ +#ifdef SQLITE_OMIT_POPEN + raw_printf(stderr, "Error: pipes are not supported in this OS\n"); + rc = 1; + p->out = stdout; +#else + p->out = popen(zFile + 1, "w"); if( p->out==0 ){ - fprintf(stderr,"Error: cannot open pipe \"%s\"\n", &azArg[1][1]); + utf8_printf(stderr,"Error: cannot open pipe \"%s\"\n", zFile + 1); p->out = stdout; rc = 1; }else{ - sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", azArg[1]); + sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile); } +#endif }else{ - p->out = output_file_open(azArg[1]); + p->out = output_file_open(zFile); if( p->out==0 ){ - if( strcmp(azArg[1],"off")!=0 ){ - fprintf(stderr,"Error: cannot write to \"%s\"\n", azArg[1]); + if( strcmp(zFile,"off")!=0 ){ + utf8_printf(stderr,"Error: cannot write to \"%s\"\n", zFile); } p->out = stdout; rc = 1; } else { - sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", azArg[1]); + sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile); } } }else @@ -2465,13 +4429,13 @@ static int do_meta_command(char *zLine, struct callback_data *p){ if( c=='p' && n>=3 && strncmp(azArg[0], "print", n)==0 ){ int i; for(i=1; i1 ) fprintf(p->out, " "); - fprintf(p->out, "%s", azArg[i]); + if( i>1 ) raw_printf(p->out, " "); + utf8_printf(p->out, "%s", azArg[i]); } - fprintf(p->out, "\n"); + raw_printf(p->out, "\n"); }else - if( c=='p' && strncmp(azArg[0], "prompt", n)==0 && (nArg==2 || nArg==3)){ + if( c=='p' && strncmp(azArg[0], "prompt", n)==0 ){ if( nArg >= 2) { strncpy(mainPrompt,azArg[1],(int)ArraySize(mainPrompt)-1); } @@ -2480,14 +4444,20 @@ static int do_meta_command(char *zLine, struct callback_data *p){ } }else - if( c=='q' && strncmp(azArg[0], "quit", n)==0 && nArg==1 ){ + if( c=='q' && strncmp(azArg[0], "quit", n)==0 ){ rc = 2; }else - if( c=='r' && n>=3 && strncmp(azArg[0], "read", n)==0 && nArg==2 ){ - FILE *alt = fopen(azArg[1], "rb"); + if( c=='r' && n>=3 && strncmp(azArg[0], "read", n)==0 ){ + FILE *alt; + if( nArg!=2 ){ + raw_printf(stderr, "Usage: .read FILE\n"); + rc = 1; + goto meta_command_exit; + } + alt = fopen(azArg[1], "rb"); if( alt==0 ){ - fprintf(stderr,"Error: cannot open \"%s\"\n", azArg[1]); + utf8_printf(stderr,"Error: cannot open \"%s\"\n", azArg[1]); rc = 1; }else{ rc = process_input(p, alt); @@ -2495,7 +4465,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){ } }else - if( c=='r' && n>=3 && strncmp(azArg[0], "restore", n)==0 && nArg>1 && nArg<4){ + if( c=='r' && n>=3 && strncmp(azArg[0], "restore", n)==0 ){ const char *zSrcFile; const char *zDb; sqlite3 *pSrc; @@ -2505,20 +4475,24 @@ static int do_meta_command(char *zLine, struct callback_data *p){ if( nArg==2 ){ zSrcFile = azArg[1]; zDb = "main"; - }else{ + }else if( nArg==3 ){ zSrcFile = azArg[2]; zDb = azArg[1]; + }else{ + raw_printf(stderr, "Usage: .restore ?DB? FILE\n"); + rc = 1; + goto meta_command_exit; } rc = sqlite3_open(zSrcFile, &pSrc); if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zSrcFile); + utf8_printf(stderr, "Error: cannot open \"%s\"\n", zSrcFile); sqlite3_close(pSrc); return 1; } open_db(p, 0); pBackup = sqlite3_backup_init(p->db, zDb, pSrc, "main"); if( pBackup==0 ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); + utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); sqlite3_close(pSrc); return 1; } @@ -2533,23 +4507,41 @@ static int do_meta_command(char *zLine, struct callback_data *p){ if( rc==SQLITE_DONE ){ rc = 0; }else if( rc==SQLITE_BUSY || rc==SQLITE_LOCKED ){ - fprintf(stderr, "Error: source database is busy\n"); + raw_printf(stderr, "Error: source database is busy\n"); rc = 1; }else{ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); + utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); rc = 1; } sqlite3_close(pSrc); }else - if( c=='s' && strncmp(azArg[0], "schema", n)==0 && nArg<3 ){ - struct callback_data data; + + if( c=='s' && strncmp(azArg[0], "scanstats", n)==0 ){ + if( nArg==2 ){ + p->scanstatsOn = booleanValue(azArg[1]); +#ifndef SQLITE_ENABLE_STMT_SCANSTATUS + raw_printf(stderr, "Warning: .scanstats not available in this build.\n"); +#endif + }else{ + raw_printf(stderr, "Usage: .scanstats on|off\n"); + rc = 1; + } + }else + + if( c=='s' && strncmp(azArg[0], "schema", n)==0 ){ + ShellState data; char *zErrMsg = 0; open_db(p, 0); memcpy(&data, p, sizeof(data)); data.showHeader = 0; - data.mode = MODE_Semi; - if( nArg>1 ){ + data.cMode = data.mode = MODE_Semi; + if( nArg>=2 && optionMatch(azArg[1], "indent") ){ + data.cMode = data.mode = MODE_Pretty; + nArg--; + if( nArg==2 ) azArg[1] = azArg[2]; + } + if( nArg==2 && azArg[1][0]!='-' ){ int i; for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]); if( strcmp(azArg[1],"sqlite_master")==0 ){ @@ -2593,29 +4585,235 @@ static int do_meta_command(char *zLine, struct callback_data *p){ callback, &data, &zErrMsg); zShellStatic = 0; } - }else{ + }else if( nArg==1 ){ rc = sqlite3_exec(p->db, "SELECT sql FROM " " (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x" " FROM sqlite_master UNION ALL" " SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_master) " - "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%'" + "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' " "ORDER BY rowid", callback, &data, &zErrMsg ); + }else{ + raw_printf(stderr, "Usage: .schema ?--indent? ?LIKE-PATTERN?\n"); + rc = 1; + goto meta_command_exit; } if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); + utf8_printf(stderr,"Error: %s\n", zErrMsg); sqlite3_free(zErrMsg); rc = 1; }else if( rc != SQLITE_OK ){ - fprintf(stderr,"Error: querying schema information\n"); + raw_printf(stderr,"Error: querying schema information\n"); rc = 1; }else{ rc = 0; } }else +#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_SELECTTRACE) + if( c=='s' && n==11 && strncmp(azArg[0], "selecttrace", n)==0 ){ + sqlite3SelectTrace = integerValue(azArg[1]); + }else +#endif + +#if defined(SQLITE_ENABLE_SESSION) + if( c=='s' && strncmp(azArg[0],"session",n)==0 && n>=3 ){ + OpenSession *pSession = &p->aSession[0]; + char **azCmd = &azArg[1]; + int iSes = 0; + int nCmd = nArg - 1; + int i; + if( nArg<=1 ) goto session_syntax_error; + open_db(p, 0); + if( nArg>=3 ){ + for(iSes=0; iSesnSession; iSes++){ + if( strcmp(p->aSession[iSes].zName, azArg[1])==0 ) break; + } + if( iSesnSession ){ + pSession = &p->aSession[iSes]; + azCmd++; + nCmd--; + }else{ + pSession = &p->aSession[0]; + iSes = 0; + } + } + + /* .session attach TABLE + ** Invoke the sqlite3session_attach() interface to attach a particular + ** table so that it is never filtered. + */ + if( strcmp(azCmd[0],"attach")==0 ){ + if( nCmd!=2 ) goto session_syntax_error; + if( pSession->p==0 ){ + session_not_open: + raw_printf(stderr, "ERROR: No sessions are open\n"); + }else{ + rc = sqlite3session_attach(pSession->p, azCmd[1]); + if( rc ){ + raw_printf(stderr, "ERROR: sqlite3session_attach() returns %d\n", rc); + rc = 0; + } + } + }else + + /* .session changeset FILE + ** .session patchset FILE + ** Write a changeset or patchset into a file. The file is overwritten. + */ + if( strcmp(azCmd[0],"changeset")==0 || strcmp(azCmd[0],"patchset")==0 ){ + FILE *out = 0; + if( nCmd!=2 ) goto session_syntax_error; + if( pSession->p==0 ) goto session_not_open; + out = fopen(azCmd[1], "wb"); + if( out==0 ){ + utf8_printf(stderr, "ERROR: cannot open \"%s\" for writing\n", azCmd[1]); + }else{ + int szChng; + void *pChng; + if( azCmd[0][0]=='c' ){ + rc = sqlite3session_changeset(pSession->p, &szChng, &pChng); + }else{ + rc = sqlite3session_patchset(pSession->p, &szChng, &pChng); + } + if( rc ){ + printf("Error: error code %d\n", rc); + rc = 0; + } + if( pChng + && fwrite(pChng, szChng, 1, out)!=1 ){ + raw_printf(stderr, "ERROR: Failed to write entire %d-byte output\n", + szChng); + } + sqlite3_free(pChng); + fclose(out); + } + }else + + /* .session close + ** Close the identified session + */ + if( strcmp(azCmd[0], "close")==0 ){ + if( nCmd!=1 ) goto session_syntax_error; + if( p->nSession ){ + session_close(pSession); + p->aSession[iSes] = p->aSession[--p->nSession]; + } + }else + + /* .session enable ?BOOLEAN? + ** Query or set the enable flag + */ + if( strcmp(azCmd[0], "enable")==0 ){ + int ii; + if( nCmd>2 ) goto session_syntax_error; + ii = nCmd==1 ? -1 : booleanValue(azCmd[1]); + if( p->nSession ){ + ii = sqlite3session_enable(pSession->p, ii); + utf8_printf(p->out, "session %s enable flag = %d\n", + pSession->zName, ii); + } + }else + + /* .session filter GLOB .... + ** Set a list of GLOB patterns of table names to be excluded. + */ + if( strcmp(azCmd[0], "filter")==0 ){ + int ii, nByte; + if( nCmd<2 ) goto session_syntax_error; + if( p->nSession ){ + for(ii=0; iinFilter; ii++){ + sqlite3_free(pSession->azFilter[ii]); + } + sqlite3_free(pSession->azFilter); + nByte = sizeof(pSession->azFilter[0])*(nCmd-1); + pSession->azFilter = sqlite3_malloc( nByte ); + if( pSession->azFilter==0 ){ + raw_printf(stderr, "Error: out or memory\n"); + exit(1); + } + for(ii=1; iiazFilter[ii-1] = sqlite3_mprintf("%s", azCmd[ii]); + } + pSession->nFilter = ii-1; + } + }else + + /* .session indirect ?BOOLEAN? + ** Query or set the indirect flag + */ + if( strcmp(azCmd[0], "indirect")==0 ){ + int ii; + if( nCmd>2 ) goto session_syntax_error; + ii = nCmd==1 ? -1 : booleanValue(azCmd[1]); + if( p->nSession ){ + ii = sqlite3session_indirect(pSession->p, ii); + utf8_printf(p->out, "session %s indirect flag = %d\n", + pSession->zName, ii); + } + }else + + /* .session isempty + ** Determine if the session is empty + */ + if( strcmp(azCmd[0], "isempty")==0 ){ + int ii; + if( nCmd!=1 ) goto session_syntax_error; + if( p->nSession ){ + ii = sqlite3session_isempty(pSession->p); + utf8_printf(p->out, "session %s isempty flag = %d\n", + pSession->zName, ii); + } + }else + + /* .session list + ** List all currently open sessions + */ + if( strcmp(azCmd[0],"list")==0 ){ + for(i=0; inSession; i++){ + utf8_printf(p->out, "%d %s\n", i, p->aSession[i].zName); + } + }else + + /* .session open DB NAME + ** Open a new session called NAME on the attached database DB. + ** DB is normally "main". + */ + if( strcmp(azCmd[0],"open")==0 ){ + char *zName; + if( nCmd!=3 ) goto session_syntax_error; + zName = azCmd[2]; + if( zName[0]==0 ) goto session_syntax_error; + for(i=0; inSession; i++){ + if( strcmp(p->aSession[i].zName,zName)==0 ){ + utf8_printf(stderr, "Session \"%s\" already exists\n", zName); + goto meta_command_exit; + } + } + if( p->nSession>=ArraySize(p->aSession) ){ + raw_printf(stderr, "Maximum of %d sessions\n", ArraySize(p->aSession)); + goto meta_command_exit; + } + pSession = &p->aSession[p->nSession]; + rc = sqlite3session_create(p->db, azCmd[1], &pSession->p); + if( rc ){ + raw_printf(stderr, "Cannot open session: error code=%d\n", rc); + rc = 0; + goto meta_command_exit; + } + pSession->nFilter = 0; + sqlite3session_table_filter(pSession->p, session_filter, pSession); + p->nSession++; + pSession->zName = sqlite3_mprintf("%s", zName); + }else + /* If no command name matches, show a syntax error */ + session_syntax_error: + session_help(p); + }else +#endif + #ifdef SQLITE_DEBUG /* Undocumented commands for internal testing. Subject to change ** without notice. */ @@ -2624,7 +4822,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){ int i, v; for(i=1; iout, "%s: %d 0x%x\n", azArg[i], v, v); + utf8_printf(p->out, "%s: %d 0x%x\n", azArg[i], v, v); } } if( strncmp(azArg[0]+9, "integer", n-9)==0 ){ @@ -2632,45 +4830,98 @@ static int do_meta_command(char *zLine, struct callback_data *p){ for(i=1; iout, "%s", zBuf); + sqlite3_snprintf(sizeof(zBuf),zBuf,"%s: %lld 0x%llx\n", azArg[i],v,v); + utf8_printf(p->out, "%s", zBuf); } } }else #endif - if( c=='s' && strncmp(azArg[0], "separator", n)==0 && nArg==2 ){ - sqlite3_snprintf(sizeof(p->separator), p->separator, - "%.*s", (int)sizeof(p->separator)-1, azArg[1]); - }else - - if( c=='s' && strncmp(azArg[0], "show", n)==0 && nArg==1 ){ - int i; - fprintf(p->out,"%9.9s: %s\n","echo", p->echoOn ? "on" : "off"); - fprintf(p->out,"%9.9s: %s\n","explain", p->explainPrev.valid ? "on" :"off"); - fprintf(p->out,"%9.9s: %s\n","headers", p->showHeader ? "on" : "off"); - fprintf(p->out,"%9.9s: %s\n","mode", modeDescr[p->mode]); - fprintf(p->out,"%9.9s: ", "nullvalue"); - output_c_string(p->out, p->nullvalue); - fprintf(p->out, "\n"); - fprintf(p->out,"%9.9s: %s\n","output", - strlen30(p->outfile) ? p->outfile : "stdout"); - fprintf(p->out,"%9.9s: ", "separator"); - output_c_string(p->out, p->separator); - fprintf(p->out, "\n"); - fprintf(p->out,"%9.9s: %s\n","stats", p->statsOn ? "on" : "off"); - fprintf(p->out,"%9.9s: ","width"); - for (i=0;i<(int)ArraySize(p->colWidth) && p->colWidth[i] != 0;i++) { - fprintf(p->out,"%d ",p->colWidth[i]); + if( c=='s' && strncmp(azArg[0], "separator", n)==0 ){ + if( nArg<2 || nArg>3 ){ + raw_printf(stderr, "Usage: .separator COL ?ROW?\n"); + rc = 1; + } + if( nArg>=2 ){ + sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, + "%.*s", (int)ArraySize(p->colSeparator)-1, azArg[1]); + } + if( nArg>=3 ){ + sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, + "%.*s", (int)ArraySize(p->rowSeparator)-1, azArg[2]); } - fprintf(p->out,"\n"); }else - if( c=='s' && strncmp(azArg[0], "stats", n)==0 && nArg>1 && nArg<3 ){ - p->statsOn = booleanValue(azArg[1]); + if( c=='s' + && (strncmp(azArg[0], "shell", n)==0 || strncmp(azArg[0],"system",n)==0) + ){ + char *zCmd; + int i, x; + if( nArg<2 ){ + raw_printf(stderr, "Usage: .system COMMAND\n"); + rc = 1; + goto meta_command_exit; + } + zCmd = sqlite3_mprintf(strchr(azArg[1],' ')==0?"%s":"\"%s\"", azArg[1]); + for(i=2; i1 && strncmp(azArg[0], "tables", n)==0 && nArg<3 ){ + if( c=='s' && strncmp(azArg[0], "show", n)==0 ){ + static const char *azBool[] = { "off", "on", "full", "unk" }; + int i; + if( nArg!=1 ){ + raw_printf(stderr, "Usage: .show\n"); + rc = 1; + goto meta_command_exit; + } + utf8_printf(p->out, "%12.12s: %s\n","echo", azBool[p->echoOn!=0]); + utf8_printf(p->out, "%12.12s: %s\n","eqp", azBool[p->autoEQP&3]); + utf8_printf(p->out, "%12.12s: %s\n","explain", + p->mode==MODE_Explain ? "on" : p->autoExplain ? "auto" : "off"); + utf8_printf(p->out,"%12.12s: %s\n","headers", azBool[p->showHeader!=0]); + utf8_printf(p->out, "%12.12s: %s\n","mode", modeDescr[p->mode]); + utf8_printf(p->out, "%12.12s: ", "nullvalue"); + output_c_string(p->out, p->nullValue); + raw_printf(p->out, "\n"); + utf8_printf(p->out,"%12.12s: %s\n","output", + strlen30(p->outfile) ? p->outfile : "stdout"); + utf8_printf(p->out,"%12.12s: ", "colseparator"); + output_c_string(p->out, p->colSeparator); + raw_printf(p->out, "\n"); + utf8_printf(p->out,"%12.12s: ", "rowseparator"); + output_c_string(p->out, p->rowSeparator); + raw_printf(p->out, "\n"); + utf8_printf(p->out, "%12.12s: %s\n","stats", azBool[p->statsOn!=0]); + utf8_printf(p->out, "%12.12s: ", "width"); + for (i=0;i<(int)ArraySize(p->colWidth) && p->colWidth[i] != 0;i++) { + raw_printf(p->out, "%d ", p->colWidth[i]); + } + raw_printf(p->out, "\n"); + utf8_printf(p->out, "%12.12s: %s\n", "filename", + p->zDbFilename ? p->zDbFilename : ""); + }else + + if( c=='s' && strncmp(azArg[0], "stats", n)==0 ){ + if( nArg==2 ){ + p->statsOn = booleanValue(azArg[1]); + }else if( nArg==1 ){ + display_stats(p->db, p, 0); + }else{ + raw_printf(stderr, "Usage: .stats ?on|off?\n"); + rc = 1; + } + }else + + if( (c=='t' && n>1 && strncmp(azArg[0], "tables", n)==0) + || (c=='i' && (strncmp(azArg[0], "indices", n)==0 + || strncmp(azArg[0], "indexes", n)==0) ) + ){ sqlite3_stmt *pStmt; char **azResult; int nRow, nAlloc; @@ -2678,36 +4929,59 @@ static int do_meta_command(char *zLine, struct callback_data *p){ int ii; open_db(p, 0); rc = sqlite3_prepare_v2(p->db, "PRAGMA database_list", -1, &pStmt, 0); - if( rc ) return rc; - zSql = sqlite3_mprintf( - "SELECT name FROM sqlite_master" - " WHERE type IN ('table','view')" - " AND name NOT LIKE 'sqlite_%%'" - " AND name LIKE ?1"); - while( sqlite3_step(pStmt)==SQLITE_ROW ){ + if( rc ) return shellDatabaseError(p->db); + + /* Create an SQL statement to query for the list of tables in the + ** main and all attached databases where the table name matches the + ** LIKE pattern bound to variable "?1". */ + if( c=='t' ){ + zSql = sqlite3_mprintf( + "SELECT name FROM sqlite_master" + " WHERE type IN ('table','view')" + " AND name NOT LIKE 'sqlite_%%'" + " AND name LIKE ?1"); + }else if( nArg>2 ){ + /* It is an historical accident that the .indexes command shows an error + ** when called with the wrong number of arguments whereas the .tables + ** command does not. */ + raw_printf(stderr, "Usage: .indexes ?LIKE-PATTERN?\n"); + rc = 1; + goto meta_command_exit; + }else{ + zSql = sqlite3_mprintf( + "SELECT name FROM sqlite_master" + " WHERE type='index'" + " AND tbl_name LIKE ?1"); + } + for(ii=0; zSql && sqlite3_step(pStmt)==SQLITE_ROW; ii++){ const char *zDbName = (const char*)sqlite3_column_text(pStmt, 1); - if( zDbName==0 || strcmp(zDbName,"main")==0 ) continue; - if( strcmp(zDbName,"temp")==0 ){ - zSql = sqlite3_mprintf( - "%z UNION ALL " - "SELECT 'temp.' || name FROM sqlite_temp_master" - " WHERE type IN ('table','view')" - " AND name NOT LIKE 'sqlite_%%'" - " AND name LIKE ?1", zSql); - }else{ + if( zDbName==0 || ii==0 ) continue; + if( c=='t' ){ zSql = sqlite3_mprintf( "%z UNION ALL " "SELECT '%q.' || name FROM \"%w\".sqlite_master" " WHERE type IN ('table','view')" " AND name NOT LIKE 'sqlite_%%'" " AND name LIKE ?1", zSql, zDbName, zDbName); + }else{ + zSql = sqlite3_mprintf( + "%z UNION ALL " + "SELECT '%q.' || name FROM \"%w\".sqlite_master" + " WHERE type='index'" + " AND tbl_name LIKE ?1", zSql, zDbName, zDbName); } } - sqlite3_finalize(pStmt); - zSql = sqlite3_mprintf("%z ORDER BY 1", zSql); - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + rc = sqlite3_finalize(pStmt); + if( zSql && rc==SQLITE_OK ){ + zSql = sqlite3_mprintf("%z ORDER BY 1", zSql); + if( zSql ) rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + } sqlite3_free(zSql); - if( rc ) return rc; + if( !zSql ) return shellNomemError(); + if( rc ) return shellDatabaseError(p->db); + + /* Run the SQL statement prepared by the above block. Store the results + ** as an array of nul-terminated strings in azResult[]. */ nRow = nAlloc = 0; azResult = 0; if( nArg>1 ){ @@ -2718,20 +4992,28 @@ static int do_meta_command(char *zLine, struct callback_data *p){ while( sqlite3_step(pStmt)==SQLITE_ROW ){ if( nRow>=nAlloc ){ char **azNew; - int n = nAlloc*2 + 10; - azNew = sqlite3_realloc(azResult, sizeof(azResult[0])*n); + int n2 = nAlloc*2 + 10; + azNew = sqlite3_realloc64(azResult, sizeof(azResult[0])*n2); if( azNew==0 ){ - fprintf(stderr, "Error: out of memory\n"); + rc = shellNomemError(); break; } - nAlloc = n; + nAlloc = n2; azResult = azNew; } azResult[nRow] = sqlite3_mprintf("%s", sqlite3_column_text(pStmt, 0)); - if( azResult[nRow] ) nRow++; + if( 0==azResult[nRow] ){ + rc = shellNomemError(); + break; + } + nRow++; } - sqlite3_finalize(pStmt); - if( nRow>0 ){ + if( sqlite3_finalize(pStmt)!=SQLITE_OK ){ + rc = shellDatabaseError(p->db); + } + + /* Pretty-print the contents of array azResult[] to the output */ + if( rc==0 && nRow>0 ){ int len, maxlen = 0; int i, j; int nPrintCol, nPrintRow; @@ -2745,15 +5027,32 @@ static int do_meta_command(char *zLine, struct callback_data *p){ for(i=0; iout, "%s%-*s", zSp, maxlen, azResult[j] ? azResult[j] : ""); + utf8_printf(p->out, "%s%-*s", zSp, maxlen, + azResult[j] ? azResult[j]:""); } - fprintf(p->out, "\n"); + raw_printf(p->out, "\n"); } } + for(ii=0; iiout = output_file_open("testcase-out.txt"); + if( p->out==0 ){ + raw_printf(stderr, "Error: cannot open 'testcase-out.txt'\n"); + } + if( nArg>=2 ){ + sqlite3_snprintf(sizeof(p->zTestcase), p->zTestcase, "%s", azArg[1]); + }else{ + sqlite3_snprintf(sizeof(p->zTestcase), p->zTestcase, "?"); + } + }else + +#ifndef SQLITE_UNTESTABLE if( c=='t' && n>=8 && strncmp(azArg[0], "testctrl", n)==0 && nArg>=2 ){ static const struct { const char *zCtrlName; /* Name of a test-control option */ @@ -2772,21 +5071,24 @@ static int do_meta_command(char *zLine, struct callback_data *p){ { "optimizations", SQLITE_TESTCTRL_OPTIMIZATIONS }, { "iskeyword", SQLITE_TESTCTRL_ISKEYWORD }, { "scratchmalloc", SQLITE_TESTCTRL_SCRATCHMALLOC }, + { "byteorder", SQLITE_TESTCTRL_BYTEORDER }, + { "never_corrupt", SQLITE_TESTCTRL_NEVER_CORRUPT }, + { "imposter", SQLITE_TESTCTRL_IMPOSTER }, }; int testctrl = -1; - int rc = 0; - int i, n; + int rc2 = 0; + int i, n2; open_db(p, 0); /* convert testctrl text option to value. allow any unique prefix ** of the option name, or a numerical value. */ - n = strlen30(azArg[1]); - for(i=0; i<(int)(sizeof(aCtrl)/sizeof(aCtrl[0])); i++){ - if( strncmp(azArg[1], aCtrl[i].zCtrlName, n)==0 ){ + n2 = strlen30(azArg[1]); + for(i=0; iSQLITE_TESTCTRL_LAST) ){ - fprintf(stderr,"Error: invalid testctrl option: %s\n", azArg[1]); + utf8_printf(stderr,"Error: invalid testctrl option: %s\n", azArg[1]); }else{ switch(testctrl){ /* sqlite3_test_control(int, db, int) */ case SQLITE_TESTCTRL_OPTIMIZATIONS: - case SQLITE_TESTCTRL_RESERVE: + case SQLITE_TESTCTRL_RESERVE: if( nArg==3 ){ - int opt = (int)strtol(azArg[2], 0, 0); - rc = sqlite3_test_control(testctrl, p->db, opt); - fprintf(p->out, "%d (0x%08x)\n", rc, rc); + int opt = (int)strtol(azArg[2], 0, 0); + rc2 = sqlite3_test_control(testctrl, p->db, opt); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); } else { - fprintf(stderr,"Error: testctrl %s takes a single int option\n", + utf8_printf(stderr,"Error: testctrl %s takes a single int option\n", azArg[1]); } break; /* sqlite3_test_control(int) */ - case SQLITE_TESTCTRL_PRNG_SAVE: - case SQLITE_TESTCTRL_PRNG_RESTORE: + case SQLITE_TESTCTRL_PRNG_SAVE: + case SQLITE_TESTCTRL_PRNG_RESTORE: case SQLITE_TESTCTRL_PRNG_RESET: + case SQLITE_TESTCTRL_BYTEORDER: if( nArg==2 ){ - rc = sqlite3_test_control(testctrl); - fprintf(p->out, "%d (0x%08x)\n", rc, rc); + rc2 = sqlite3_test_control(testctrl); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); } else { - fprintf(stderr,"Error: testctrl %s takes no options\n", azArg[1]); + utf8_printf(stderr,"Error: testctrl %s takes no options\n", + azArg[1]); } break; /* sqlite3_test_control(int, uint) */ - case SQLITE_TESTCTRL_PENDING_BYTE: + case SQLITE_TESTCTRL_PENDING_BYTE: if( nArg==3 ){ unsigned int opt = (unsigned int)integerValue(azArg[2]); - rc = sqlite3_test_control(testctrl, opt); - fprintf(p->out, "%d (0x%08x)\n", rc, rc); + rc2 = sqlite3_test_control(testctrl, opt); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); } else { - fprintf(stderr,"Error: testctrl %s takes a single unsigned" + utf8_printf(stderr,"Error: testctrl %s takes a single unsigned" " int option\n", azArg[1]); } break; - + /* sqlite3_test_control(int, int) */ - case SQLITE_TESTCTRL_ASSERT: - case SQLITE_TESTCTRL_ALWAYS: + case SQLITE_TESTCTRL_ASSERT: + case SQLITE_TESTCTRL_ALWAYS: + case SQLITE_TESTCTRL_NEVER_CORRUPT: if( nArg==3 ){ - int opt = booleanValue(azArg[2]); - rc = sqlite3_test_control(testctrl, opt); - fprintf(p->out, "%d (0x%08x)\n", rc, rc); + int opt = booleanValue(azArg[2]); + rc2 = sqlite3_test_control(testctrl, opt); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); } else { - fprintf(stderr,"Error: testctrl %s takes a single int option\n", + utf8_printf(stderr,"Error: testctrl %s takes a single int option\n", azArg[1]); } break; /* sqlite3_test_control(int, char *) */ #ifdef SQLITE_N_KEYWORD - case SQLITE_TESTCTRL_ISKEYWORD: + case SQLITE_TESTCTRL_ISKEYWORD: if( nArg==3 ){ - const char *opt = azArg[2]; - rc = sqlite3_test_control(testctrl, opt); - fprintf(p->out, "%d (0x%08x)\n", rc, rc); + const char *opt = azArg[2]; + rc2 = sqlite3_test_control(testctrl, opt); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); } else { - fprintf(stderr,"Error: testctrl %s takes a single char * option\n", - azArg[1]); + utf8_printf(stderr, + "Error: testctrl %s takes a single char * option\n", + azArg[1]); } break; #endif - case SQLITE_TESTCTRL_BITVEC_TEST: - case SQLITE_TESTCTRL_FAULT_INSTALL: - case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: - case SQLITE_TESTCTRL_SCRATCHMALLOC: + case SQLITE_TESTCTRL_IMPOSTER: + if( nArg==5 ){ + rc2 = sqlite3_test_control(testctrl, p->db, + azArg[2], + integerValue(azArg[3]), + integerValue(azArg[4])); + raw_printf(p->out, "%d (0x%08x)\n", rc2, rc2); + }else{ + raw_printf(stderr,"Usage: .testctrl imposter dbName onoff tnum\n"); + } + break; + + case SQLITE_TESTCTRL_BITVEC_TEST: + case SQLITE_TESTCTRL_FAULT_INSTALL: + case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: + case SQLITE_TESTCTRL_SCRATCHMALLOC: default: - fprintf(stderr,"Error: CLI support for testctrl %s not implemented\n", - azArg[1]); + utf8_printf(stderr, + "Error: CLI support for testctrl %s not implemented\n", + azArg[1]); break; } } }else - if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 && nArg==2 ){ + if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 ){ open_db(p, 0); - sqlite3_busy_timeout(p->db, (int)integerValue(azArg[1])); + sqlite3_busy_timeout(p->db, nArg>=2 ? (int)integerValue(azArg[1]) : 0); }else - - if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 - && nArg==2 - ){ - enableTimer = booleanValue(azArg[1]); + + if( c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 ){ + if( nArg==2 ){ + enableTimer = booleanValue(azArg[1]); + if( enableTimer && !HAS_TIMER ){ + raw_printf(stderr, "Error: timer not available on this system.\n"); + enableTimer = 0; + } + }else{ + raw_printf(stderr, "Usage: .timer on|off\n"); + rc = 1; + } }else - - if( c=='t' && strncmp(azArg[0], "trace", n)==0 && nArg>1 ){ + + if( c=='t' && strncmp(azArg[0], "trace", n)==0 ){ open_db(p, 0); + if( nArg!=2 ){ + raw_printf(stderr, "Usage: .trace FILE|off\n"); + rc = 1; + goto meta_command_exit; + } output_file_close(p->traceOut); p->traceOut = output_file_open(azArg[1]); #if !defined(SQLITE_OMIT_TRACE) && !defined(SQLITE_OMIT_FLOATING_POINT) if( p->traceOut==0 ){ - sqlite3_trace(p->db, 0, 0); + sqlite3_trace_v2(p->db, 0, 0, 0); }else{ - sqlite3_trace(p->db, sql_trace_callback, p->traceOut); + sqlite3_trace_v2(p->db, SQLITE_TRACE_STMT, sql_trace_callback,p->traceOut); } #endif }else +#endif /* !defined(SQLITE_UNTESTABLE) */ + +#if SQLITE_USER_AUTHENTICATION + if( c=='u' && strncmp(azArg[0], "user", n)==0 ){ + if( nArg<2 ){ + raw_printf(stderr, "Usage: .user SUBCOMMAND ...\n"); + rc = 1; + goto meta_command_exit; + } + open_db(p, 0); + if( strcmp(azArg[1],"login")==0 ){ + if( nArg!=4 ){ + raw_printf(stderr, "Usage: .user login USER PASSWORD\n"); + rc = 1; + goto meta_command_exit; + } + rc = sqlite3_user_authenticate(p->db, azArg[2], azArg[3], + (int)strlen(azArg[3])); + if( rc ){ + utf8_printf(stderr, "Authentication failed for user %s\n", azArg[2]); + rc = 1; + } + }else if( strcmp(azArg[1],"add")==0 ){ + if( nArg!=5 ){ + raw_printf(stderr, "Usage: .user add USER PASSWORD ISADMIN\n"); + rc = 1; + goto meta_command_exit; + } + rc = sqlite3_user_add(p->db, azArg[2], + azArg[3], (int)strlen(azArg[3]), + booleanValue(azArg[4])); + if( rc ){ + raw_printf(stderr, "User-Add failed: %d\n", rc); + rc = 1; + } + }else if( strcmp(azArg[1],"edit")==0 ){ + if( nArg!=5 ){ + raw_printf(stderr, "Usage: .user edit USER PASSWORD ISADMIN\n"); + rc = 1; + goto meta_command_exit; + } + rc = sqlite3_user_change(p->db, azArg[2], + azArg[3], (int)strlen(azArg[3]), + booleanValue(azArg[4])); + if( rc ){ + raw_printf(stderr, "User-Edit failed: %d\n", rc); + rc = 1; + } + }else if( strcmp(azArg[1],"delete")==0 ){ + if( nArg!=3 ){ + raw_printf(stderr, "Usage: .user delete USER\n"); + rc = 1; + goto meta_command_exit; + } + rc = sqlite3_user_delete(p->db, azArg[2]); + if( rc ){ + raw_printf(stderr, "User-Delete failed: %d\n", rc); + rc = 1; + } + }else{ + raw_printf(stderr, "Usage: .user login|add|edit|delete ...\n"); + rc = 1; + goto meta_command_exit; + } + }else +#endif /* SQLITE_USER_AUTHENTICATION */ if( c=='v' && strncmp(azArg[0], "version", n)==0 ){ - fprintf(p->out, "SQLite %s %s\n" /*extra-version-info*/, + utf8_printf(p->out, "SQLite %s %s\n" /*extra-version-info*/, sqlite3_libversion(), sqlite3_sourceid()); }else + if( c=='v' && strncmp(azArg[0], "vfsinfo", n)==0 ){ + const char *zDbName = nArg==2 ? azArg[1] : "main"; + sqlite3_vfs *pVfs = 0; + if( p->db ){ + sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFS_POINTER, &pVfs); + if( pVfs ){ + utf8_printf(p->out, "vfs.zName = \"%s\"\n", pVfs->zName); + raw_printf(p->out, "vfs.iVersion = %d\n", pVfs->iVersion); + raw_printf(p->out, "vfs.szOsFile = %d\n", pVfs->szOsFile); + raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname); + } + } + }else + + if( c=='v' && strncmp(azArg[0], "vfslist", n)==0 ){ + sqlite3_vfs *pVfs; + sqlite3_vfs *pCurrent = 0; + if( p->db ){ + sqlite3_file_control(p->db, "main", SQLITE_FCNTL_VFS_POINTER, &pCurrent); + } + for(pVfs=sqlite3_vfs_find(0); pVfs; pVfs=pVfs->pNext){ + utf8_printf(p->out, "vfs.zName = \"%s\"%s\n", pVfs->zName, + pVfs==pCurrent ? " <--- CURRENT" : ""); + raw_printf(p->out, "vfs.iVersion = %d\n", pVfs->iVersion); + raw_printf(p->out, "vfs.szOsFile = %d\n", pVfs->szOsFile); + raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname); + if( pVfs->pNext ){ + raw_printf(p->out, "-----------------------------------\n"); + } + } + }else + if( c=='v' && strncmp(azArg[0], "vfsname", n)==0 ){ const char *zDbName = nArg==2 ? azArg[1] : "main"; char *zVfsName = 0; if( p->db ){ sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFSNAME, &zVfsName); if( zVfsName ){ - fprintf(p->out, "%s\n", zVfsName); + utf8_printf(p->out, "%s\n", zVfsName); sqlite3_free(zVfsName); } } @@ -2917,12 +5346,11 @@ static int do_meta_command(char *zLine, struct callback_data *p){ #if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_WHERETRACE) if( c=='w' && strncmp(azArg[0], "wheretrace", n)==0 ){ - extern int sqlite3WhereTrace; - sqlite3WhereTrace = booleanValue(azArg[1]); + sqlite3WhereTrace = nArg>=2 ? booleanValue(azArg[1]) : 0xff; }else #endif - if( c=='w' && strncmp(azArg[0], "width", n)==0 && nArg>1 ){ + if( c=='w' && strncmp(azArg[0], "width", n)==0 ){ int j; assert( nArg<=ArraySize(azArg) ); for(j=1; jcolWidth); j++){ @@ -2931,11 +5359,16 @@ static int do_meta_command(char *zLine, struct callback_data *p){ }else { - fprintf(stderr, "Error: unknown command or invalid arguments: " + utf8_printf(stderr, "Error: unknown command or invalid arguments: " " \"%s\". Enter \".help\" for help\n", azArg[0]); rc = 1; } +meta_command_exit: + if( p->outCount ){ + p->outCount--; + if( p->outCount==0 ) output_reset(p); + } return rc; } @@ -3004,6 +5437,42 @@ static int line_is_complete(char *zSql, int nSql){ return rc; } +/* +** Run a single line of SQL +*/ +static int runOneSqlLine(ShellState *p, char *zSql, FILE *in, int startline){ + int rc; + char *zErrMsg = 0; + + open_db(p, 0); + if( p->backslashOn ) resolve_backslashes(zSql); + BEGIN_TIMER; + rc = shell_exec(p->db, zSql, shell_callback, p, &zErrMsg); + END_TIMER; + if( rc || zErrMsg ){ + char zPrefix[100]; + if( in!=0 || !stdin_is_interactive ){ + sqlite3_snprintf(sizeof(zPrefix), zPrefix, + "Error: near line %d:", startline); + }else{ + sqlite3_snprintf(sizeof(zPrefix), zPrefix, "Error:"); + } + if( zErrMsg!=0 ){ + utf8_printf(stderr, "%s %s\n", zPrefix, zErrMsg); + sqlite3_free(zErrMsg); + zErrMsg = 0; + }else{ + utf8_printf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db)); + } + return 1; + }else if( p->countChanges ){ + raw_printf(p->out, "changes: %3d total_changes: %d\n", + sqlite3_changes(p->db), sqlite3_total_changes(p->db)); + } + return 0; +} + + /* ** Read input from *in and process it. If *in==0 then input ** is interactive - the user is typing it it. Otherwise, input @@ -3013,14 +5482,13 @@ static int line_is_complete(char *zSql, int nSql){ ** ** Return the number of errors. */ -static int process_input(struct callback_data *p, FILE *in){ +static int process_input(ShellState *p, FILE *in){ char *zLine = 0; /* A single input line */ char *zSql = 0; /* Accumulated SQL text */ int nLine; /* Length of current line */ int nSql = 0; /* Bytes of zSql[] used */ int nAlloc = 0; /* Allocated zSql[] space */ int nSqlPrior = 0; /* Bytes of zSql[] used by prior line */ - char *zErrMsg; /* Error message returned */ int rc; /* Error code */ int errCnt = 0; /* Number of errors seen */ int lineno = 0; /* Current line number */ @@ -3031,7 +5499,7 @@ static int process_input(struct callback_data *p, FILE *in){ zLine = one_input_line(in, zLine, nSql>0); if( zLine==0 ){ /* End of input */ - if( stdin_is_interactive ) printf("\n"); + if( in==0 && stdin_is_interactive ) printf("\n"); break; } if( seenInterrupt ){ @@ -3061,7 +5529,7 @@ static int process_input(struct callback_data *p, FILE *in){ nAlloc = nSql+nLine+100; zSql = realloc(zSql, nAlloc); if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); + raw_printf(stderr, "Error: out of memory\n"); exit(1); } } @@ -3080,40 +5548,21 @@ static int process_input(struct callback_data *p, FILE *in){ } if( nSql && line_contains_semicolon(&zSql[nSqlPrior], nSql-nSqlPrior) && sqlite3_complete(zSql) ){ - p->cnt = 0; - open_db(p, 0); - BEGIN_TIMER; - rc = shell_exec(p->db, zSql, shell_callback, p, &zErrMsg); - END_TIMER; - if( rc || zErrMsg ){ - char zPrefix[100]; - if( in!=0 || !stdin_is_interactive ){ - sqlite3_snprintf(sizeof(zPrefix), zPrefix, - "Error: near line %d:", startline); - }else{ - sqlite3_snprintf(sizeof(zPrefix), zPrefix, "Error:"); - } - if( zErrMsg!=0 ){ - fprintf(stderr, "%s %s\n", zPrefix, zErrMsg); - sqlite3_free(zErrMsg); - zErrMsg = 0; - }else{ - fprintf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db)); - } - errCnt++; - } + errCnt += runOneSqlLine(p, zSql, in, startline); nSql = 0; + if( p->outCount ){ + output_reset(p); + p->outCount = 0; + } }else if( nSql && _all_whitespace(zSql) ){ if( p->echoOn ) printf("%s\n", zSql); nSql = 0; } } - if( nSql ){ - if( !_all_whitespace(zSql) ){ - fprintf(stderr, "Error: incomplete SQL: %s\n", zSql); - } - free(zSql); + if( nSql && !_all_whitespace(zSql) ){ + runOneSqlLine(p, zSql, in, startline); } + free(zSql); free(zLine); return errCnt>0; } @@ -3122,11 +5571,17 @@ static int process_input(struct callback_data *p, FILE *in){ ** Return a pathname which is the user's home directory. A ** 0 return indicates an error of some kind. */ -static char *find_home_dir(void){ +static char *find_home_dir(int clearFlag){ static char *home_dir = NULL; + if( clearFlag ){ + free(home_dir); + home_dir = 0; + return 0; + } if( home_dir ) return home_dir; -#if !defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE) && !defined(__RTP__) && !defined(_WRS_KERNEL) +#if !defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE) \ + && !defined(__RTP__) && !defined(_WRS_KERNEL) { struct passwd *pwent; uid_t uid = getuid(); @@ -3187,23 +5642,21 @@ static char *find_home_dir(void){ ** ** Returns the number of errors. */ -static int process_sqliterc( - struct callback_data *p, /* Configuration data */ +static void process_sqliterc( + ShellState *p, /* Configuration data */ const char *sqliterc_override /* Name of config file. NULL to use default */ ){ char *home_dir = NULL; const char *sqliterc = sqliterc_override; char *zBuf = 0; FILE *in = NULL; - int rc = 0; if (sqliterc == NULL) { - home_dir = find_home_dir(); + home_dir = find_home_dir(0); if( home_dir==0 ){ -#if !defined(__RTP__) && !defined(_WRS_KERNEL) - fprintf(stderr,"%s: Error: cannot locate your home directory\n", Argv0); -#endif - return 1; + raw_printf(stderr, "-- warning: cannot find home directory;" + " cannot read ~/.sqliterc\n"); + return; } sqlite3_initialize(); zBuf = sqlite3_mprintf("%s/.sqliterc",home_dir); @@ -3212,19 +5665,19 @@ static int process_sqliterc( in = fopen(sqliterc,"rb"); if( in ){ if( stdin_is_interactive ){ - fprintf(stderr,"-- Loading resources from %s\n",sqliterc); + utf8_printf(stderr,"-- Loading resources from %s\n",sqliterc); } - rc = process_input(p,in); + process_input(p,in); fclose(in); } sqlite3_free(zBuf); - return rc; } /* ** Show available command line options */ -static const char zOptions[] = +static const char zOptions[] = + " -ascii set output mode to 'ascii'\n" " -bail stop after hitting an error\n" " -batch force batch I/O\n" " -column set output mode to 'column'\n" @@ -3241,12 +5694,16 @@ static const char zOptions[] = " -interactive force interactive I/O\n" " -line set output mode to 'line'\n" " -list set output mode to 'list'\n" + " -lookaside SIZE N use N entries of SZ bytes for lookaside memory\n" " -mmap N default mmap size set to N\n" #ifdef SQLITE_ENABLE_MULTIPLEX " -multiplex enable the multiplexor VFS\n" #endif + " -newline SEP set output row separator. Default: '\\n'\n" " -nullvalue TEXT set text string for NULL values. Default ''\n" - " -separator SEP set output field separator. Default: '|'\n" + " -pagecache SIZE N use N slots of SZ bytes each for page cache memory\n" + " -scratch SIZE N use N slots of SZ bytes each for scratch memory\n" + " -separator SEP set output column separator. Default: '|'\n" " -stats print memory stats before each finalize\n" " -version show SQLite version\n" " -vfs NAME use NAME as the default VFS\n" @@ -3255,14 +5712,14 @@ static const char zOptions[] = #endif ; static void usage(int showDetail){ - fprintf(stderr, - "Usage: %s [OPTIONS] FILENAME [SQL]\n" + utf8_printf(stderr, + "Usage: %s [OPTIONS] FILENAME [SQL]\n" "FILENAME is the name of an SQLite database. A new database is created\n" "if the file does not previously exist.\n", Argv0); if( showDetail ){ - fprintf(stderr, "OPTIONS include:\n%s", zOptions); + utf8_printf(stderr, "OPTIONS include:\n%s", zOptions); }else{ - fprintf(stderr, "Use the -help option for additional information\n"); + raw_printf(stderr, "Use the -help option for additional information\n"); } exit(1); } @@ -3270,47 +5727,108 @@ static void usage(int showDetail){ /* ** Initialize the state information in data */ -static void main_init(struct callback_data *data) { +static void main_init(ShellState *data) { memset(data, 0, sizeof(*data)); - data->mode = MODE_List; - memcpy(data->separator,"|", 2); + data->normalMode = data->cMode = data->mode = MODE_List; + data->autoExplain = 1; + memcpy(data->colSeparator,SEP_Column, 2); + memcpy(data->rowSeparator,SEP_Row, 2); data->showHeader = 0; + data->shellFlgs = SHFLG_Lookaside; sqlite3_config(SQLITE_CONFIG_URI, 1); sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data); + sqlite3_config(SQLITE_CONFIG_MULTITHREAD); sqlite3_snprintf(sizeof(mainPrompt), mainPrompt,"sqlite> "); sqlite3_snprintf(sizeof(continuePrompt), continuePrompt," ...> "); - sqlite3_config(SQLITE_CONFIG_SINGLETHREAD); } +/* +** Output text to the console in a font that attracts extra attention. +*/ +#ifdef _WIN32 +static void printBold(const char *zText){ + HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE); + CONSOLE_SCREEN_BUFFER_INFO defaultScreenInfo; + GetConsoleScreenBufferInfo(out, &defaultScreenInfo); + SetConsoleTextAttribute(out, + FOREGROUND_RED|FOREGROUND_INTENSITY + ); + printf("%s", zText); + SetConsoleTextAttribute(out, defaultScreenInfo.wAttributes); +} +#else +static void printBold(const char *zText){ + printf("\033[1m%s\033[0m", zText); +} +#endif + /* ** Get the argument to an --option. Throw an error and die if no argument ** is available. */ static char *cmdline_option_value(int argc, char **argv, int i){ if( i==argc ){ - fprintf(stderr, "%s: Error: missing argument to %s\n", + utf8_printf(stderr, "%s: Error: missing argument to %s\n", argv[0], argv[argc-1]); exit(1); } return argv[i]; } -int main(int argc, char **argv){ +#ifndef SQLITE_SHELL_IS_UTF8 +# if (defined(_WIN32) || defined(WIN32)) && defined(_MSC_VER) +# define SQLITE_SHELL_IS_UTF8 (0) +# else +# define SQLITE_SHELL_IS_UTF8 (1) +# endif +#endif + +#if SQLITE_SHELL_IS_UTF8 +int SQLITE_CDECL main(int argc, char **argv){ +#else +int SQLITE_CDECL wmain(int argc, wchar_t **wargv){ + char **argv; +#endif char *zErrMsg = 0; - struct callback_data data; + ShellState data; const char *zInitFile = 0; - char *zFirstCmd = 0; int i; int rc = 0; + int warnInmemoryDb = 0; + int readStdin = 1; + int nCmd = 0; + char **azCmd = 0; + setBinaryMode(stdin, 0); + setvbuf(stderr, 0, _IONBF, 0); /* Make sure stderr is unbuffered */ + stdin_is_interactive = isatty(0); + stdout_is_console = isatty(1); + +#if USE_SYSTEM_SQLITE+0!=1 if( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)!=0 ){ - fprintf(stderr, "SQLite header and source version mismatch\n%s\n%s\n", + utf8_printf(stderr, "SQLite header and source version mismatch\n%s\n%s\n", sqlite3_sourceid(), SQLITE_SOURCE_ID); exit(1); } - Argv0 = argv[0]; +#endif main_init(&data); - stdin_is_interactive = isatty(0); +#if !SQLITE_SHELL_IS_UTF8 + sqlite3_initialize(); + argv = sqlite3_malloc64(sizeof(argv[0])*argc); + if( argv==0 ){ + raw_printf(stderr, "out of memory\n"); + exit(1); + } + for(i=0; i=1 && argv && argv[0] ); + Argv0 = argv[0]; /* Make sure we have a valid signal handler early, before anything ** else is done. @@ -3319,6 +5837,18 @@ int main(int argc, char **argv){ signal(SIGINT, interrupt_handler); #endif +#ifdef SQLITE_SHELL_DBNAME_PROC + { + /* If the SQLITE_SHELL_DBNAME_PROC macro is defined, then it is the name + ** of a C-function that will provide the name of the database file. Use + ** this compile-time option to embed this shell program in larger + ** applications. */ + extern void SQLITE_SHELL_DBNAME_PROC(const char**); + SQLITE_SHELL_DBNAME_PROC(&data.zDbFilename); + warnInmemoryDb = 0; + } +#endif + /* Do an initial pass through the command-line argument to locate ** the name of the database file, the name of the initialization file, ** the size of the alternative malloc heap, @@ -3330,19 +5860,23 @@ int main(int argc, char **argv){ if( z[0]!='-' ){ if( data.zDbFilename==0 ){ data.zDbFilename = z; - continue; + }else{ + /* Excesss arguments are interpreted as SQL (or dot-commands) and + ** mean that nothing is read from stdin */ + readStdin = 0; + nCmd++; + azCmd = realloc(azCmd, sizeof(azCmd[0])*nCmd); + if( azCmd==0 ){ + raw_printf(stderr, "out of memory\n"); + exit(1); + } + azCmd[nCmd-1] = z; } - if( zFirstCmd==0 ){ - zFirstCmd = z; - continue; - } - fprintf(stderr,"%s: Error: too many options: \"%s\"\n", Argv0, argv[i]); - fprintf(stderr,"Use -help for a list of options.\n"); - return 1; } if( z[1]=='-' ) z++; if( strcmp(z,"-separator")==0 || strcmp(z,"-nullvalue")==0 + || strcmp(z,"-newline")==0 || strcmp(z,"-cmd")==0 ){ (void)cmdline_option_value(argc, argv, ++i); @@ -3350,7 +5884,7 @@ int main(int argc, char **argv){ zInitFile = cmdline_option_value(argc, argv, ++i); }else if( strcmp(z,"-batch")==0 ){ /* Need to check for batch mode here to so we can avoid printing - ** informational messages (like from process_sqliterc) before + ** informational messages (like from process_sqliterc) before ** we do the actual processing of arguments later in a second pass. */ stdin_is_interactive = 0; @@ -3363,7 +5897,36 @@ int main(int argc, char **argv){ szHeap = integerValue(zSize); if( szHeap>0x7fff0000 ) szHeap = 0x7fff0000; sqlite3_config(SQLITE_CONFIG_HEAP, malloc((int)szHeap), (int)szHeap, 64); +#else + (void)cmdline_option_value(argc, argv, ++i); #endif + }else if( strcmp(z,"-scratch")==0 ){ + int n, sz; + sz = (int)integerValue(cmdline_option_value(argc,argv,++i)); + if( sz>400000 ) sz = 400000; + if( sz<2500 ) sz = 2500; + n = (int)integerValue(cmdline_option_value(argc,argv,++i)); + if( n>10 ) n = 10; + if( n<1 ) n = 1; + sqlite3_config(SQLITE_CONFIG_SCRATCH, malloc(n*sz+1), sz, n); + data.shellFlgs |= SHFLG_Scratch; + }else if( strcmp(z,"-pagecache")==0 ){ + int n, sz; + sz = (int)integerValue(cmdline_option_value(argc,argv,++i)); + if( sz>70000 ) sz = 70000; + if( sz<0 ) sz = 0; + n = (int)integerValue(cmdline_option_value(argc,argv,++i)); + sqlite3_config(SQLITE_CONFIG_PAGECACHE, + (n>0 && sz>0) ? malloc(n*sz) : 0, sz, n); + data.shellFlgs |= SHFLG_Pagecache; + }else if( strcmp(z,"-lookaside")==0 ){ + int n, sz; + sz = (int)integerValue(cmdline_option_value(argc,argv,++i)); + if( sz<0 ) sz = 0; + n = (int)integerValue(cmdline_option_value(argc,argv,++i)); + if( n<0 ) n = 0; + sqlite3_config(SQLITE_CONFIG_LOOKASIDE, sz, n); + if( sz*n==0 ) data.shellFlgs &= ~SHFLG_Lookaside; #ifdef SQLITE_ENABLE_VFSTRACE }else if( strcmp(z,"-vfstrace")==0 ){ extern int vfstrace_register( @@ -3388,7 +5951,7 @@ int main(int argc, char **argv){ if( pVfs ){ sqlite3_vfs_register(pVfs, 1); }else{ - fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]); + utf8_printf(stderr, "no such VFS: \"%s\"\n", argv[i]); exit(1); } } @@ -3396,8 +5959,9 @@ int main(int argc, char **argv){ if( data.zDbFilename==0 ){ #ifndef SQLITE_OMIT_MEMORYDB data.zDbFilename = ":memory:"; + warnInmemoryDb = argc==1; #else - fprintf(stderr,"%s: Error: no database filename specified\n", Argv0); + utf8_printf(stderr,"%s: Error: no database filename specified\n", Argv0); return 1; #endif } @@ -3416,10 +5980,7 @@ int main(int argc, char **argv){ ** is given on the command line, look for a file named ~/.sqliterc and ** try to process it. */ - rc = process_sqliterc(&data,zInitFile); - if( rc>0 ){ - return rc; - } + process_sqliterc(&data,zInitFile); /* Make a second pass through the command-line argument and set ** options. This second pass is delayed until after the initialization @@ -3442,12 +6003,21 @@ int main(int argc, char **argv){ data.mode = MODE_Column; }else if( strcmp(z,"-csv")==0 ){ data.mode = MODE_Csv; - memcpy(data.separator,",",2); + memcpy(data.colSeparator,",",2); + }else if( strcmp(z,"-ascii")==0 ){ + data.mode = MODE_Ascii; + sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, + SEP_Unit); + sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, + SEP_Record); }else if( strcmp(z,"-separator")==0 ){ - sqlite3_snprintf(sizeof(data.separator), data.separator, + sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, + "%s",cmdline_option_value(argc,argv,++i)); + }else if( strcmp(z,"-newline")==0 ){ + sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, "%s",cmdline_option_value(argc,argv,++i)); }else if( strcmp(z,"-nullvalue")==0 ){ - sqlite3_snprintf(sizeof(data.nullvalue), data.nullvalue, + sqlite3_snprintf(sizeof(data.nullValue), data.nullValue, "%s",cmdline_option_value(argc,argv,++i)); }else if( strcmp(z,"-header")==0 ){ data.showHeader = 1; @@ -3455,8 +6025,21 @@ int main(int argc, char **argv){ data.showHeader = 0; }else if( strcmp(z,"-echo")==0 ){ data.echoOn = 1; + }else if( strcmp(z,"-eqp")==0 ){ + data.autoEQP = 1; + }else if( strcmp(z,"-eqpfull")==0 ){ + data.autoEQP = 2; }else if( strcmp(z,"-stats")==0 ){ data.statsOn = 1; + }else if( strcmp(z,"-scanstats")==0 ){ + data.scanstatsOn = 1; + }else if( strcmp(z,"-backslash")==0 ){ + /* Undocumented command-line option: -backslash + ** Causes C-style backslash escapes to be evaluated in SQL statements + ** prior to sending the SQL into SQLite. Useful for injecting + ** crazy bytes in the middle of SQL statements for testing and debugging. + */ + data.backslashOn = 1; }else if( strcmp(z,"-bail")==0 ){ bail_on_error = 1; }else if( strcmp(z,"-version")==0 ){ @@ -3468,6 +6051,12 @@ int main(int argc, char **argv){ stdin_is_interactive = 0; }else if( strcmp(z,"-heap")==0 ){ i++; + }else if( strcmp(z,"-scratch")==0 ){ + i+=2; + }else if( strcmp(z,"-pagecache")==0 ){ + i+=2; + }else if( strcmp(z,"-lookaside")==0 ){ + i+=2; }else if( strcmp(z,"-mmap")==0 ){ i++; }else if( strcmp(z,"-vfs")==0 ){ @@ -3483,6 +6072,10 @@ int main(int argc, char **argv){ }else if( strcmp(z,"-help")==0 ){ usage(1); }else if( strcmp(z,"-cmd")==0 ){ + /* Run commands that follow -cmd first and separately from commands + ** that simply appear on the command-line. This seems goofy. It would + ** be better if all commands ran in the order that they appear. But + ** we retain the goofy behavior for historical compatibility. */ if( i==argc-1 ) break; z = cmdline_option_value(argc,argv,++i); if( z[0]=='.' ){ @@ -3492,37 +6085,43 @@ int main(int argc, char **argv){ open_db(&data, 0); rc = shell_exec(data.db, z, shell_callback, &data, &zErrMsg); if( zErrMsg!=0 ){ - fprintf(stderr,"Error: %s\n", zErrMsg); + utf8_printf(stderr,"Error: %s\n", zErrMsg); if( bail_on_error ) return rc!=0 ? rc : 1; }else if( rc!=0 ){ - fprintf(stderr,"Error: unable to process SQL \"%s\"\n", z); + utf8_printf(stderr,"Error: unable to process SQL \"%s\"\n", z); if( bail_on_error ) return rc; } } }else{ - fprintf(stderr,"%s: Error: unknown option: %s\n", Argv0, z); - fprintf(stderr,"Use -help for a list of options.\n"); + utf8_printf(stderr,"%s: Error: unknown option: %s\n", Argv0, z); + raw_printf(stderr,"Use -help for a list of options.\n"); return 1; } + data.cMode = data.mode; } - if( zFirstCmd ){ - /* Run just the command that follows the database name + if( !readStdin ){ + /* Run all arguments that do not begin with '-' as if they were separate + ** command-line inputs, except for the argToSkip argument which contains + ** the database filename. */ - if( zFirstCmd[0]=='.' ){ - rc = do_meta_command(zFirstCmd, &data); - if( rc==2 ) rc = 0; - }else{ - open_db(&data, 0); - rc = shell_exec(data.db, zFirstCmd, shell_callback, &data, &zErrMsg); - if( zErrMsg!=0 ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - return rc!=0 ? rc : 1; - }else if( rc!=0 ){ - fprintf(stderr,"Error: unable to process SQL \"%s\"\n", zFirstCmd); - return rc; + for(i=0; i=1400 +# define _CRT_RAND_S +#endif + +/* +** Include the header file used to customize the compiler options for MSVC. +** This should be done first so that it can successfully prevent spurious +** compiler warnings due to subsequent content in this file and other files +** that are included by this file. +*/ +/************** Include msvc.h in the middle of sqliteInt.h ******************/ +/************** Begin file msvc.h ********************************************/ +/* +** 2015 January 12 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains code that is specific to MSVC. +*/ +#ifndef SQLITE_MSVC_H +#define SQLITE_MSVC_H + +#if defined(_MSC_VER) +#pragma warning(disable : 4054) +#pragma warning(disable : 4055) +#pragma warning(disable : 4100) +#pragma warning(disable : 4127) +#pragma warning(disable : 4130) +#pragma warning(disable : 4152) +#pragma warning(disable : 4189) +#pragma warning(disable : 4206) +#pragma warning(disable : 4210) +#pragma warning(disable : 4232) +#pragma warning(disable : 4244) +#pragma warning(disable : 4305) +#pragma warning(disable : 4306) +#pragma warning(disable : 4702) +#pragma warning(disable : 4706) +#endif /* defined(_MSC_VER) */ + +#endif /* SQLITE_MSVC_H */ + +/************** End of msvc.h ************************************************/ +/************** Continuing where we left off in sqliteInt.h ******************/ + +/* +** Special setup for VxWorks +*/ +/************** Include vxworks.h in the middle of sqliteInt.h ***************/ +/************** Begin file vxworks.h *****************************************/ +/* +** 2015-03-02 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains code that is specific to Wind River's VxWorks +*/ +#if defined(__RTP__) || defined(_WRS_KERNEL) +/* This is VxWorks. Set up things specially for that OS +*/ +#include +#include /* amalgamator: dontcache */ +#define OS_VXWORKS 1 +#define SQLITE_OS_OTHER 0 +#define SQLITE_HOMEGROWN_RECURSIVE_MUTEX 1 +#define SQLITE_OMIT_LOAD_EXTENSION 1 +#define SQLITE_ENABLE_LOCKING_STYLE 0 +#define HAVE_UTIME 1 +#else +/* This is not VxWorks. */ +#define OS_VXWORKS 0 +#define HAVE_FCHOWN 1 +#define HAVE_READLINK 1 +#define HAVE_LSTAT 1 +#endif /* defined(_WRS_KERNEL) */ + +/************** End of vxworks.h *********************************************/ +/************** Continuing where we left off in sqliteInt.h ******************/ + +/* +** These #defines should enable >2GB file support on POSIX if the +** underlying operating system supports it. If the OS lacks +** large file support, or if the OS is windows, these should be no-ops. +** +** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any +** system #includes. Hence, this block of code must be the very first +** code in all source files. +** +** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch +** on the compiler command line. This is necessary if you are compiling +** on a recent machine (ex: Red Hat 7.2) but you want your code to work +** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2 +** without this option, LFS is enable. But LFS does not exist in the kernel +** in Red Hat 6.0, so the code won't work. Hence, for maximum binary +** portability you should omit LFS. +** +** The previous paragraph was written in 2005. (This paragraph is written +** on 2008-11-28.) These days, all Linux kernels support large files, so +** you should probably leave LFS enabled. But some embedded platforms might +** lack LFS in which case the SQLITE_DISABLE_LFS macro might still be useful. +** +** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later. +*/ +#ifndef SQLITE_DISABLE_LFS +# define _LARGE_FILE 1 +# ifndef _FILE_OFFSET_BITS +# define _FILE_OFFSET_BITS 64 +# endif +# define _LARGEFILE_SOURCE 1 +#endif + +/* The GCC_VERSION, CLANG_VERSION, and MSVC_VERSION macros are used to +** conditionally include optimizations for each of these compilers. A +** value of 0 means that compiler is not being used. The +** SQLITE_DISABLE_INTRINSIC macro means do not use any compiler-specific +** optimizations, and hence set all compiler macros to 0 +*/ +#if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC) +# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__) +#else +# define GCC_VERSION 0 +#endif +#if defined(__clang__) && !defined(_WIN32) && !defined(SQLITE_DISABLE_INTRINSIC) +# define CLANG_VERSION \ + (__clang_major__*1000000+__clang_minor__*1000+__clang_patchlevel__) +#else +# define CLANG_VERSION 0 +#endif +#if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC) +# define MSVC_VERSION _MSC_VER +#else +# define MSVC_VERSION 0 +#endif + +/* Needed for various definitions... */ +#if defined(__GNUC__) && !defined(_GNU_SOURCE) +# define _GNU_SOURCE +#endif + +#if defined(__OpenBSD__) && !defined(_BSD_SOURCE) +# define _BSD_SOURCE +#endif + +/* +** For MinGW, check to see if we can include the header file containing its +** version information, among other things. Normally, this internal MinGW +** header file would [only] be included automatically by other MinGW header +** files; however, the contained version information is now required by this +** header file to work around binary compatibility issues (see below) and +** this is the only known way to reliably obtain it. This entire #if block +** would be completely unnecessary if there was any other way of detecting +** MinGW via their preprocessor (e.g. if they customized their GCC to define +** some MinGW-specific macros). When compiling for MinGW, either the +** _HAVE_MINGW_H or _HAVE__MINGW_H (note the extra underscore) macro must be +** defined; otherwise, detection of conditions specific to MinGW will be +** disabled. +*/ +#if defined(_HAVE_MINGW_H) +# include "mingw.h" +#elif defined(_HAVE__MINGW_H) +# include "_mingw.h" +#endif + +/* +** For MinGW version 4.x (and higher), check to see if the _USE_32BIT_TIME_T +** define is required to maintain binary compatibility with the MSVC runtime +** library in use (e.g. for Windows XP). +*/ +#if !defined(_USE_32BIT_TIME_T) && !defined(_USE_64BIT_TIME_T) && \ + defined(_WIN32) && !defined(_WIN64) && \ + defined(__MINGW_MAJOR_VERSION) && __MINGW_MAJOR_VERSION >= 4 && \ + defined(__MSVCRT__) +# define _USE_32BIT_TIME_T +#endif + +/* The public SQLite interface. The _FILE_OFFSET_BITS macro must appear +** first in QNX. Also, the _USE_32BIT_TIME_T macro must appear first for +** MinGW. +*/ +/************** Include sqlite3.h in the middle of sqliteInt.h ***************/ /************** Begin file sqlite3.h *****************************************/ /* ** 2001 September 15 @@ -51,15 +299,15 @@ ** ** The official C-language API documentation for SQLite is derived ** from comments in this file. This file is the authoritative source -** on how SQLite interfaces are suppose to operate. +** on how SQLite interfaces are supposed to operate. ** ** The name of this file under configuration management is "sqlite.h.in". ** The makefile makes some minor changes to this file (such as inserting ** the version number) and changes its name to "sqlite3.h" as ** part of the build process. */ -#ifndef _SQLITE3_H_ -#define _SQLITE3_H_ +#ifndef SQLITE3_H +#define SQLITE3_H #include /* Needed for the definition of va_list */ /* @@ -71,21 +319,34 @@ extern "C" { /* -** Add the ability to override 'extern' +** Provide the ability to override linkage features of the interface. */ #ifndef SQLITE_EXTERN # define SQLITE_EXTERN extern #endif - #ifndef SQLITE_API # define SQLITE_API #endif - +#ifndef SQLITE_CDECL +# define SQLITE_CDECL +#endif +#ifndef SQLITE_APICALL +# define SQLITE_APICALL +#endif +#ifndef SQLITE_STDCALL +# define SQLITE_STDCALL SQLITE_APICALL +#endif +#ifndef SQLITE_CALLBACK +# define SQLITE_CALLBACK +#endif +#ifndef SQLITE_SYSAPI +# define SQLITE_SYSAPI +#endif /* ** These no-op macros are used in front of interfaces to mark those ** interfaces as either deprecated or experimental. New applications -** should not use deprecated interfaces - they are support for backwards +** should not use deprecated interfaces - they are supported for backwards ** compatibility only. Application writers should be aware that ** experimental interfaces are subject to change in point releases. ** @@ -123,7 +384,8 @@ extern "C" { ** be held constant and Z will be incremented or else Y will be incremented ** and Z will be reset to zero. ** -** Since version 3.6.18, SQLite source code has been stored in the +** Since [version 3.6.18] ([dateof:3.6.18]), +** SQLite source code has been stored in the ** Fossil configuration management ** system. ^The SQLITE_SOURCE_ID macro evaluates to ** a string which identifies a particular check-in of SQLite @@ -135,20 +397,20 @@ extern "C" { ** [sqlite3_libversion_number()], [sqlite3_sourceid()], ** [sqlite_version()] and [sqlite_source_id()]. */ -#define SQLITE_VERSION "3.8.3.1" -#define SQLITE_VERSION_NUMBER 3008003 -#define SQLITE_SOURCE_ID "2014-02-11 14:52:19 ea3317a4803d71d88183b29f1d3086f46d68a00e" +#define SQLITE_VERSION "3.17.0" +#define SQLITE_VERSION_NUMBER 3017000 +#define SQLITE_SOURCE_ID "2017-02-13 16:02:40 ada05cfa86ad7f5645450ac7a2a21c9aa6e57d2c" /* ** CAPI3REF: Run-Time Library Version Numbers -** KEYWORDS: sqlite3_version, sqlite3_sourceid +** KEYWORDS: sqlite3_version sqlite3_sourceid ** ** These interfaces provide the same information as the [SQLITE_VERSION], ** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros ** but are associated with the library instead of the header file. ^(Cautious ** programmers might include assert() statements in their application to ** verify that values returned by these interfaces match the macros in -** the header, and thus insure that the application is +** the header, and thus ensure that the application is ** compiled with matching library and header files. ** ** 
@@ -229,7 +491,7 @@ SQLITE_API const char *sqlite3_compileoption_get(int N);
 ** SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but
 ** can be fully or partially disabled using a call to [sqlite3_config()]
 ** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD],
-** or [SQLITE_CONFIG_MUTEX].  ^(The return value of the
+** or [SQLITE_CONFIG_SERIALIZED].  ^(The return value of the
 ** sqlite3_threadsafe() function shows only the compile-time setting of
 ** thread safety, not any run-time changes to that setting made by
 ** sqlite3_config(). In other words, the return value from sqlite3_threadsafe()
@@ -273,7 +535,11 @@ typedef struct sqlite3 sqlite3;
 */
 #ifdef SQLITE_INT64_TYPE
   typedef SQLITE_INT64_TYPE sqlite_int64;
-  typedef unsigned SQLITE_INT64_TYPE sqlite_uint64;
+# ifdef SQLITE_UINT64_TYPE
+    typedef SQLITE_UINT64_TYPE sqlite_uint64;
+# else  
+    typedef unsigned SQLITE_INT64_TYPE sqlite_uint64;
+# endif
 #elif defined(_MSC_VER) || defined(__BORLANDC__)
   typedef __int64 sqlite_int64;
   typedef unsigned __int64 sqlite_uint64;
@@ -294,10 +560,11 @@ typedef sqlite_uint64 sqlite3_uint64;
 
 /*
 ** CAPI3REF: Closing A Database Connection
+** DESTRUCTOR: sqlite3
 **
 ** ^The sqlite3_close() and sqlite3_close_v2() routines are destructors
 ** for the [sqlite3] object.
-** ^Calls to sqlite3_close() and sqlite3_close_v2() return SQLITE_OK if
+** ^Calls to sqlite3_close() and sqlite3_close_v2() return [SQLITE_OK] if
 ** the [sqlite3] object is successfully destroyed and all associated
 ** resources are deallocated.
 **
@@ -305,7 +572,7 @@ typedef sqlite_uint64 sqlite3_uint64;
 ** statements or unfinished sqlite3_backup objects then sqlite3_close()
 ** will leave the database connection open and return [SQLITE_BUSY].
 ** ^If sqlite3_close_v2() is called with unfinalized prepared statements
-** and unfinished sqlite3_backups, then the database connection becomes
+** and/or unfinished sqlite3_backups, then the database connection becomes
 ** an unusable "zombie" which will automatically be deallocated when the
 ** last prepared statement is finalized or the last sqlite3_backup is
 ** finished.  The sqlite3_close_v2() interface is intended for use with
@@ -318,7 +585,7 @@ typedef sqlite_uint64 sqlite3_uint64;
 ** with the [sqlite3] object prior to attempting to close the object.  ^If
 ** sqlite3_close_v2() is called on a [database connection] that still has
 ** outstanding [prepared statements], [BLOB handles], and/or
-** [sqlite3_backup] objects then it returns SQLITE_OK but the deallocation
+** [sqlite3_backup] objects then it returns [SQLITE_OK] and the deallocation
 ** of resources is deferred until all [prepared statements], [BLOB handles],
 ** and [sqlite3_backup] objects are also destroyed.
 **
@@ -345,6 +612,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**);
 
 /*
 ** CAPI3REF: One-Step Query Execution Interface
+** METHOD: sqlite3
 **
 ** The sqlite3_exec() interface is a convenience wrapper around
 ** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()],
@@ -369,7 +637,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**);
 ** from [sqlite3_malloc()] and passed back through the 5th parameter.
 ** To avoid memory leaks, the application should invoke [sqlite3_free()]
 ** on error message strings returned through the 5th parameter of
-** of sqlite3_exec() after the error message string is no longer needed.
+** sqlite3_exec() after the error message string is no longer needed.
 ** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors
 ** occur, then sqlite3_exec() sets the pointer in its 5th parameter to
 ** NULL before returning.
@@ -396,7 +664,7 @@ typedef int (*sqlite3_callback)(void*,int,char**, char**);
 ** Restrictions:
 **
 ** 
    
-** 
  •  The application must insure that the 1st parameter to sqlite3_exec()
+** 
  •  The application must ensure that the 1st parameter to sqlite3_exec()
 **      is a valid and open [database connection].
 ** 
  •  The application must not close the [database connection] specified by
 **      the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
@@ -414,16 +682,14 @@ SQLITE_API int sqlite3_exec(
 
 /*
 ** CAPI3REF: Result Codes
-** KEYWORDS: SQLITE_OK {error code} {error codes}
-** KEYWORDS: {result code} {result codes}
+** KEYWORDS: {result code definitions}
 **
 ** Many SQLite functions return an integer result code from the set shown
 ** here in order to indicate success or failure.
 **
 ** New error codes may be added in future versions of SQLite.
 **
-** See also: [SQLITE_IOERR_READ | extended result codes],
-** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes].
+** See also: [extended result code definitions]
 */
 #define SQLITE_OK           0   /* Successful result */
 /* beginning-of-error-codes */
@@ -461,26 +727,20 @@ SQLITE_API int sqlite3_exec(
 
 /*
 ** CAPI3REF: Extended Result Codes
-** KEYWORDS: {extended error code} {extended error codes}
-** KEYWORDS: {extended result code} {extended result codes}
+** KEYWORDS: {extended result code definitions}
 **
-** In its default configuration, SQLite API routines return one of 26 integer
-** [SQLITE_OK | result codes].  However, experience has shown that many of
+** In its default configuration, SQLite API routines return one of 30 integer
+** [result codes].  However, experience has shown that many of
 ** these result codes are too coarse-grained.  They do not provide as
 ** much information about problems as programmers might like.  In an effort to
-** address this, newer versions of SQLite (version 3.3.8 and later) include
+** address this, newer versions of SQLite (version 3.3.8 [dateof:3.3.8]
+** and later) include
 ** support for additional result codes that provide more detailed information
-** about errors. The extended result codes are enabled or disabled
+** about errors. These [extended result codes] are enabled or disabled
 ** on a per database connection basis using the
-** [sqlite3_extended_result_codes()] API.
-**
-** Some of the available extended result codes are listed here.
-** One may expect the number of extended result codes will increase
-** over time.  Software that uses extended result codes should expect
-** to see new result codes in future releases of SQLite.
-**
-** The SQLITE_OK result code will never be extended.  It will always
-** be exactly zero.
+** [sqlite3_extended_result_codes()] API.  Or, the extended code for
+** the most recent error can be obtained using
+** [sqlite3_extended_errcode()].
 */
 #define SQLITE_IOERR_READ              (SQLITE_IOERR | (1<<8))
 #define SQLITE_IOERR_SHORT_READ        (SQLITE_IOERR | (2<<8))
@@ -508,6 +768,8 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_IOERR_MMAP              (SQLITE_IOERR | (24<<8))
 #define SQLITE_IOERR_GETTEMPPATH       (SQLITE_IOERR | (25<<8))
 #define SQLITE_IOERR_CONVPATH          (SQLITE_IOERR | (26<<8))
+#define SQLITE_IOERR_VNODE             (SQLITE_IOERR | (27<<8))
+#define SQLITE_IOERR_AUTH              (SQLITE_IOERR | (28<<8))
 #define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED |  (1<<8))
 #define SQLITE_BUSY_RECOVERY           (SQLITE_BUSY   |  (1<<8))
 #define SQLITE_BUSY_SNAPSHOT           (SQLITE_BUSY   |  (2<<8))
@@ -534,6 +796,8 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_NOTICE_RECOVER_WAL      (SQLITE_NOTICE | (1<<8))
 #define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8))
 #define SQLITE_WARNING_AUTOINDEX       (SQLITE_WARNING | (1<<8))
+#define SQLITE_AUTH_USER               (SQLITE_AUTH | (1<<8))
+#define SQLITE_OK_LOAD_PERMANENTLY     (SQLITE_OK | (1<<8))
 
 /*
 ** CAPI3REF: Flags For File Open Operations
@@ -588,7 +852,10 @@ SQLITE_API int sqlite3_exec(
 ** file that were written at the application level might have changed
 ** and that adjacent bytes, even bytes within the same sector are
 ** guaranteed to be unchanged.  The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN
-** flag indicate that a file cannot be deleted when open.
+** flag indicates that a file cannot be deleted when open.  The
+** SQLITE_IOCAP_IMMUTABLE flag indicates that the file is on
+** read-only media and cannot be changed even by processes with
+** elevated privileges.
 */
 #define SQLITE_IOCAP_ATOMIC                 0x00000001
 #define SQLITE_IOCAP_ATOMIC512              0x00000002
@@ -603,6 +870,7 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_IOCAP_SEQUENTIAL             0x00000400
 #define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN  0x00000800
 #define SQLITE_IOCAP_POWERSAFE_OVERWRITE    0x00001000
+#define SQLITE_IOCAP_IMMUTABLE              0x00002000
 
 /*
 ** CAPI3REF: File Locking Levels
@@ -709,7 +977,7 @@ struct sqlite3_file {
 ** locking strategy (for example to use dot-file locks), to inquire
 ** about the status of a lock, or to break stale locks.  The SQLite
 ** core reserves all opcodes less than 100 for its own use.
-** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
+** A [file control opcodes | list of opcodes] less than 100 is available.
 ** Applications that define a custom xFileControl method should use opcodes
 ** greater than 100 to avoid conflicts.  VFS implementations should
 ** return [SQLITE_NOTFOUND] for file control opcodes that they do not
@@ -734,6 +1002,9 @@ struct sqlite3_file {
 ** 
  •  [SQLITE_IOCAP_ATOMIC64K]
 ** 
  •  [SQLITE_IOCAP_SAFE_APPEND]
 ** 
  •  [SQLITE_IOCAP_SEQUENTIAL]
+** 
  •  [SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN]
+** 
  •  [SQLITE_IOCAP_POWERSAFE_OVERWRITE]
+** 
  •  [SQLITE_IOCAP_IMMUTABLE]
 ** 

 **
 ** The SQLITE_IOCAP_ATOMIC property means that all writes of
@@ -782,19 +1053,22 @@ struct sqlite3_io_methods {
 
 /*
 ** CAPI3REF: Standard File Control Opcodes
+** KEYWORDS: {file control opcodes} {file control opcode}
 **
 ** These integer constants are opcodes for the xFileControl method
 ** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
 ** interface.
 **
+** 
    
+** 
  • [[SQLITE_FCNTL_LOCKSTATE]]
 ** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging.  This
 ** opcode causes the xFileControl method to write the current state of
 ** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
 ** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
 ** into an integer that the pArg argument points to. This capability
-** is used during testing and only needs to be supported when SQLITE_TEST
-** is defined.
-** 
      
+** is used during testing and is only available when the SQLITE_TEST
+** compile-time option is used.
+**
 ** 
    • [[SQLITE_FCNTL_SIZE_HINT]]
 ** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS
 ** layer a hint of how large the database file will grow to be during the
@@ -815,8 +1089,13 @@ struct sqlite3_io_methods {
 ** 
    • [[SQLITE_FCNTL_FILE_POINTER]]
 ** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
 ** to the [sqlite3_file] object associated with a particular database
-** connection.  See the [sqlite3_file_control()] documentation for
-** additional information.
+** connection.  See also [SQLITE_FCNTL_JOURNAL_POINTER].
+**
+** 
    • [[SQLITE_FCNTL_JOURNAL_POINTER]]
+** The [SQLITE_FCNTL_JOURNAL_POINTER] opcode is used to obtain a pointer
+** to the [sqlite3_file] object associated with the journal file (either
+** the [rollback journal] or the [write-ahead log]) for a particular database
+** connection.  See also [SQLITE_FCNTL_FILE_POINTER].
 **
 ** 
    • [[SQLITE_FCNTL_SYNC_OMITTED]]
 ** No longer in use.
@@ -903,6 +1182,15 @@ struct sqlite3_io_methods {
 ** pointer in case this file-control is not implemented.  This file-control
 ** is intended for diagnostic use only.
 **
+** 
    • [[SQLITE_FCNTL_VFS_POINTER]]
+** ^The [SQLITE_FCNTL_VFS_POINTER] opcode finds a pointer to the top-level
+** [VFSes] currently in use.  ^(The argument X in
+** sqlite3_file_control(db,SQLITE_FCNTL_VFS_POINTER,X) must be
+** of type "[sqlite3_vfs] **".  This opcodes will set *X
+** to a pointer to the top-level VFS.)^
+** ^When there are multiple VFS shims in the stack, this opcode finds the
+** upper-most shim only.
+**
 ** 
    • [[SQLITE_FCNTL_PRAGMA]]
 ** ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA] 
 ** file control is sent to the open [sqlite3_file] object corresponding
@@ -919,7 +1207,9 @@ struct sqlite3_io_methods {
 ** [PRAGMA] processing continues.  ^If the [SQLITE_FCNTL_PRAGMA]
 ** file control returns [SQLITE_OK], then the parser assumes that the
 ** VFS has handled the PRAGMA itself and the parser generates a no-op
-** prepared statement.  ^If the [SQLITE_FCNTL_PRAGMA] file control returns
+** prepared statement if result string is NULL, or that returns a copy
+** of the result string if the string is non-NULL.
+** ^If the [SQLITE_FCNTL_PRAGMA] file control returns
 ** any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means
 ** that the VFS encountered an error while handling the [PRAGMA] and the
 ** compilation of the PRAGMA fails with an error.  ^The [SQLITE_FCNTL_PRAGMA]
@@ -971,12 +1261,39 @@ struct sqlite3_io_methods {
 ** on whether or not the file has been renamed, moved, or deleted since it
 ** was first opened.
 **
+** 
    • [[SQLITE_FCNTL_WIN32_GET_HANDLE]]
+** The [SQLITE_FCNTL_WIN32_GET_HANDLE] opcode can be used to obtain the
+** underlying native file handle associated with a file handle.  This file
+** control interprets its argument as a pointer to a native file handle and
+** writes the resulting value there.
+**
+** 
    • [[SQLITE_FCNTL_WIN32_SET_HANDLE]]
+** The [SQLITE_FCNTL_WIN32_SET_HANDLE] opcode is used for debugging.  This
+** opcode causes the xFileControl method to swap the file handle with the one
+** pointed to by the pArg argument.  This capability is used during testing
+** and only needs to be supported when SQLITE_TEST is defined.
+**
+** 
    • [[SQLITE_FCNTL_WAL_BLOCK]]
+** The [SQLITE_FCNTL_WAL_BLOCK] is a signal to the VFS layer that it might
+** be advantageous to block on the next WAL lock if the lock is not immediately
+** available.  The WAL subsystem issues this signal during rare
+** circumstances in order to fix a problem with priority inversion.
+** Applications should not use this file-control.
+**
+** 
    • [[SQLITE_FCNTL_ZIPVFS]]
+** The [SQLITE_FCNTL_ZIPVFS] opcode is implemented by zipvfs only. All other
+** VFS should return SQLITE_NOTFOUND for this opcode.
+**
+** 
    • [[SQLITE_FCNTL_RBU]]
+** The [SQLITE_FCNTL_RBU] opcode is implemented by the special VFS used by
+** the RBU extension only.  All other VFS should return SQLITE_NOTFOUND for
+** this opcode.  
 ** 
    
 */
 #define SQLITE_FCNTL_LOCKSTATE               1
-#define SQLITE_GET_LOCKPROXYFILE             2
-#define SQLITE_SET_LOCKPROXYFILE             3
-#define SQLITE_LAST_ERRNO                    4
+#define SQLITE_FCNTL_GET_LOCKPROXYFILE       2
+#define SQLITE_FCNTL_SET_LOCKPROXYFILE       3
+#define SQLITE_FCNTL_LAST_ERRNO              4
 #define SQLITE_FCNTL_SIZE_HINT               5
 #define SQLITE_FCNTL_CHUNK_SIZE              6
 #define SQLITE_FCNTL_FILE_POINTER            7
@@ -994,6 +1311,20 @@ struct sqlite3_io_methods {
 #define SQLITE_FCNTL_HAS_MOVED              20
 #define SQLITE_FCNTL_SYNC                   21
 #define SQLITE_FCNTL_COMMIT_PHASETWO        22
+#define SQLITE_FCNTL_WIN32_SET_HANDLE       23
+#define SQLITE_FCNTL_WAL_BLOCK              24
+#define SQLITE_FCNTL_ZIPVFS                 25
+#define SQLITE_FCNTL_RBU                    26
+#define SQLITE_FCNTL_VFS_POINTER            27
+#define SQLITE_FCNTL_JOURNAL_POINTER        28
+#define SQLITE_FCNTL_WIN32_GET_HANDLE       29
+#define SQLITE_FCNTL_PDB                    30
+
+/* deprecated names */
+#define SQLITE_GET_LOCKPROXYFILE      SQLITE_FCNTL_GET_LOCKPROXYFILE
+#define SQLITE_SET_LOCKPROXYFILE      SQLITE_FCNTL_SET_LOCKPROXYFILE
+#define SQLITE_LAST_ERRNO             SQLITE_FCNTL_LAST_ERRNO
+
 
 /*
 ** CAPI3REF: Mutex Handle
@@ -1007,6 +1338,16 @@ struct sqlite3_io_methods {
 */
 typedef struct sqlite3_mutex sqlite3_mutex;
 
+/*
+** CAPI3REF: Loadable Extension Thunk
+**
+** A pointer to the opaque sqlite3_api_routines structure is passed as
+** the third parameter to entry points of [loadable extensions].  This
+** structure must be typedefed in order to work around compiler warnings
+** on some platforms.
+*/
+typedef struct sqlite3_api_routines sqlite3_api_routines;
+
 /*
 ** CAPI3REF: OS Interface Object
 **
@@ -1200,7 +1541,7 @@ struct sqlite3_vfs {
   const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);
   /*
   ** The methods above are in versions 1 through 3 of the sqlite_vfs object.
-  ** New fields may be appended in figure versions.  The iVersion
+  ** New fields may be appended in future versions.  The iVersion
   ** value will increment whenever this happens. 
   */
 };
@@ -1245,7 +1586,7 @@ struct sqlite3_vfs {
 ** 

 **
 ** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as
-** was given no the corresponding lock.  
+** was given on the corresponding lock.  
 **
 ** The xShmLock method can transition between unlocked and SHARED or
 ** between unlocked and EXCLUSIVE.  It cannot transition between SHARED
@@ -1356,9 +1697,11 @@ SQLITE_API int sqlite3_os_end(void);
 ** applications and so this routine is usually not necessary.  It is
 ** provided to support rare applications with unusual needs.
 **
-** The sqlite3_config() interface is not threadsafe.  The application
-** must insure that no other SQLite interfaces are invoked by other
-** threads while sqlite3_config() is running.  Furthermore, sqlite3_config()
+** The sqlite3_config() interface is not threadsafe. The application
+** must ensure that no other SQLite interfaces are invoked by other
+** threads while sqlite3_config() is running.
+**
+** The sqlite3_config() interface
 ** may only be invoked prior to library initialization using
 ** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()].
 ** ^If sqlite3_config() is called after [sqlite3_initialize()] and before
@@ -1380,6 +1723,7 @@ SQLITE_API int sqlite3_config(int, ...);
 
 /*
 ** CAPI3REF: Configure database connections
+** METHOD: sqlite3
 **
 ** The sqlite3_db_config() interface is used to make configuration
 ** changes to a [database connection].  The interface is similar to
@@ -1528,31 +1872,33 @@ struct sqlite3_mem_methods {
 ** SQLITE_CONFIG_SERIALIZED configuration option.
 **
 ** [[SQLITE_CONFIG_MALLOC]] 
SQLITE_CONFIG_MALLOC

-** 
 ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mem_methods] structure.  The argument specifies
+** 
 ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is 
+** a pointer to an instance of the [sqlite3_mem_methods] structure.
+** The argument specifies
 ** alternative low-level memory allocation routines to be used in place of
 ** the memory allocation routines built into SQLite.)^ ^SQLite makes
 ** its own private copy of the content of the [sqlite3_mem_methods] structure
 ** before the [sqlite3_config()] call returns.

 **
 ** [[SQLITE_CONFIG_GETMALLOC]] 
SQLITE_CONFIG_GETMALLOC

-** 
 ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mem_methods] structure.  The [sqlite3_mem_methods]
+** 
 ^(The SQLITE_CONFIG_GETMALLOC option takes a single argument which
+** is a pointer to an instance of the [sqlite3_mem_methods] structure.
+** The [sqlite3_mem_methods]
 ** structure is filled with the currently defined memory allocation routines.)^
 ** This option can be used to overload the default memory allocation
 ** routines with a wrapper that simulations memory allocation failure or
 ** tracks memory usage, for example. 

 **
 ** [[SQLITE_CONFIG_MEMSTATUS]] 
SQLITE_CONFIG_MEMSTATUS

-** 
 ^This option takes single argument of type int, interpreted as a 
-** boolean, which enables or disables the collection of memory allocation 
-** statistics. ^(When memory allocation statistics are disabled, the 
-** following SQLite interfaces become non-operational:
+** 
 ^The SQLITE_CONFIG_MEMSTATUS option takes single argument of type int,
+** interpreted as a boolean, which enables or disables the collection of
+** memory allocation statistics. ^(When memory allocation statistics are
+** disabled, the following SQLite interfaces become non-operational:
 **   
    
 **   
  •  [sqlite3_memory_used()]
 **   
  •  [sqlite3_memory_highwater()]
 **   
  •  [sqlite3_soft_heap_limit64()]
-**   
  •  [sqlite3_status()]
+**   
  •  [sqlite3_status64()]
 **   
)^
 ** ^Memory allocation statistics are enabled by default unless SQLite is
 ** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
@@ -1560,53 +1906,72 @@ struct sqlite3_mem_methods {
 ** 

 **
 ** [[SQLITE_CONFIG_SCRATCH]] 
SQLITE_CONFIG_SCRATCH

-** 
 ^This option specifies a static memory buffer that SQLite can use for
-** scratch memory.  There are three arguments:  A pointer an 8-byte
+** 
 ^The SQLITE_CONFIG_SCRATCH option specifies a static memory buffer
+** that SQLite can use for scratch memory.  ^(There are three arguments
+** to SQLITE_CONFIG_SCRATCH:  A pointer an 8-byte
 ** aligned memory buffer from which the scratch allocations will be
 ** drawn, the size of each scratch allocation (sz),
-** and the maximum number of scratch allocations (N).  The sz
-** argument must be a multiple of 16.
+** and the maximum number of scratch allocations (N).)^
 ** The first argument must be a pointer to an 8-byte aligned buffer
 ** of at least sz*N bytes of memory.
-** ^SQLite will use no more than two scratch buffers per thread.  So
-** N should be set to twice the expected maximum number of threads.
-** ^SQLite will never require a scratch buffer that is more than 6
-** times the database page size. ^If SQLite needs needs additional
+** ^SQLite will not use more than one scratch buffers per thread.
+** ^SQLite will never request a scratch buffer that is more than 6
+** times the database page size.
+** ^If SQLite needs needs additional
 ** scratch memory beyond what is provided by this configuration option, then 
-** [sqlite3_malloc()] will be used to obtain the memory needed.

+** [sqlite3_malloc()] will be used to obtain the memory needed.

+** ^When the application provides any amount of scratch memory using
+** SQLITE_CONFIG_SCRATCH, SQLite avoids unnecessary large
+** [sqlite3_malloc|heap allocations].
+** This can help [Robson proof|prevent memory allocation failures] due to heap
+** fragmentation in low-memory embedded systems.
+** 
 **
 ** [[SQLITE_CONFIG_PAGECACHE]] 
SQLITE_CONFIG_PAGECACHE

-** 
 ^This option specifies a static memory buffer that SQLite can use for
-** the database page cache with the default page cache implementation.  
-** This configuration should not be used if an application-define page
-** cache implementation is loaded using the SQLITE_CONFIG_PCACHE2 option.
-** There are three arguments to this option: A pointer to 8-byte aligned
-** memory, the size of each page buffer (sz), and the number of pages (N).
+** 
 ^The SQLITE_CONFIG_PAGECACHE option specifies a memory pool
+** that SQLite can use for the database page cache with the default page
+** cache implementation.  
+** This configuration option is a no-op if an application-define page
+** cache implementation is loaded using the [SQLITE_CONFIG_PCACHE2].
+** ^There are three arguments to SQLITE_CONFIG_PAGECACHE: A pointer to
+** 8-byte aligned memory (pMem), the size of each page cache line (sz),
+** and the number of cache lines (N).
 ** The sz argument should be the size of the largest database page
-** (a power of two between 512 and 32768) plus a little extra for each
-** page header.  ^The page header size is 20 to 40 bytes depending on
-** the host architecture.  ^It is harmless, apart from the wasted memory,
-** to make sz a little too large.  The first
-** argument should point to an allocation of at least sz*N bytes of memory.
-** ^SQLite will use the memory provided by the first argument to satisfy its
-** memory needs for the first N pages that it adds to cache.  ^If additional
-** page cache memory is needed beyond what is provided by this option, then
-** SQLite goes to [sqlite3_malloc()] for the additional storage space.
-** The pointer in the first argument must
-** be aligned to an 8-byte boundary or subsequent behavior of SQLite
-** will be undefined.

+** (a power of two between 512 and 65536) plus some extra bytes for each
+** page header.  ^The number of extra bytes needed by the page header
+** can be determined using [SQLITE_CONFIG_PCACHE_HDRSZ].
+** ^It is harmless, apart from the wasted memory,
+** for the sz parameter to be larger than necessary.  The pMem
+** argument must be either a NULL pointer or a pointer to an 8-byte
+** aligned block of memory of at least sz*N bytes, otherwise
+** subsequent behavior is undefined.
+** ^When pMem is not NULL, SQLite will strive to use the memory provided
+** to satisfy page cache needs, falling back to [sqlite3_malloc()] if
+** a page cache line is larger than sz bytes or if all of the pMem buffer
+** is exhausted.
+** ^If pMem is NULL and N is non-zero, then each database connection
+** does an initial bulk allocation for page cache memory
+** from [sqlite3_malloc()] sufficient for N cache lines if N is positive or
+** of -1024*N bytes if N is negative, . ^If additional
+** page cache memory is needed beyond what is provided by the initial
+** allocation, then SQLite goes to [sqlite3_malloc()] separately for each
+** additional cache line. 
 **
 ** [[SQLITE_CONFIG_HEAP]] 
SQLITE_CONFIG_HEAP

-** 
 ^This option specifies a static memory buffer that SQLite will use
-** for all of its dynamic memory allocation needs beyond those provided
-** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
-** There are three arguments: An 8-byte aligned pointer to the memory,
+** 
 ^The SQLITE_CONFIG_HEAP option specifies a static memory buffer 
+** that SQLite will use for all of its dynamic memory allocation needs
+** beyond those provided for by [SQLITE_CONFIG_SCRATCH] and
+** [SQLITE_CONFIG_PAGECACHE].
+** ^The SQLITE_CONFIG_HEAP option is only available if SQLite is compiled
+** with either [SQLITE_ENABLE_MEMSYS3] or [SQLITE_ENABLE_MEMSYS5] and returns
+** [SQLITE_ERROR] if invoked otherwise.
+** ^There are three arguments to SQLITE_CONFIG_HEAP:
+** An 8-byte aligned pointer to the memory,
 ** the number of bytes in the memory buffer, and the minimum allocation size.
 ** ^If the first pointer (the memory pointer) is NULL, then SQLite reverts
 ** to using its default memory allocator (the system malloc() implementation),
 ** undoing any prior invocation of [SQLITE_CONFIG_MALLOC].  ^If the
-** memory pointer is not NULL and either [SQLITE_ENABLE_MEMSYS3] or
-** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
+** memory pointer is not NULL then the alternative memory
 ** allocator is engaged to handle all of SQLites memory allocation needs.
 ** The first pointer (the memory pointer) must be aligned to an 8-byte
 ** boundary or subsequent behavior of SQLite will be undefined.
@@ -1614,11 +1979,11 @@ struct sqlite3_mem_methods {
 ** for the minimum allocation size are 2**5 through 2**8.

 **
 ** [[SQLITE_CONFIG_MUTEX]] 
SQLITE_CONFIG_MUTEX

-** 
 ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mutex_methods] structure.  The argument specifies
-** alternative low-level mutex routines to be used in place
-** the mutex routines built into SQLite.)^  ^SQLite makes a copy of the
-** content of the [sqlite3_mutex_methods] structure before the call to
+** 
 ^(The SQLITE_CONFIG_MUTEX option takes a single argument which is a
+** pointer to an instance of the [sqlite3_mutex_methods] structure.
+** The argument specifies alternative low-level mutex routines to be used
+** in place the mutex routines built into SQLite.)^  ^SQLite makes a copy of
+** the content of the [sqlite3_mutex_methods] structure before the call to
 ** [sqlite3_config()] returns. ^If SQLite is compiled with
 ** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
 ** the entire mutexing subsystem is omitted from the build and hence calls to
@@ -1626,8 +1991,8 @@ struct sqlite3_mem_methods {
 ** return [SQLITE_ERROR].

 **
 ** [[SQLITE_CONFIG_GETMUTEX]] 
SQLITE_CONFIG_GETMUTEX

-** 
 ^(This option takes a single argument which is a pointer to an
-** instance of the [sqlite3_mutex_methods] structure.  The
+** 
 ^(The SQLITE_CONFIG_GETMUTEX option takes a single argument which
+** is a pointer to an instance of the [sqlite3_mutex_methods] structure.  The
 ** [sqlite3_mutex_methods]
 ** structure is filled with the currently defined mutex routines.)^
 ** This option can be used to overload the default mutex allocation
@@ -1639,25 +2004,25 @@ struct sqlite3_mem_methods {
 ** return [SQLITE_ERROR].

 **
 ** [[SQLITE_CONFIG_LOOKASIDE]] 
SQLITE_CONFIG_LOOKASIDE

-** 
 ^(This option takes two arguments that determine the default
-** memory allocation for the lookaside memory allocator on each
-** [database connection].  The first argument is the
+** 
 ^(The SQLITE_CONFIG_LOOKASIDE option takes two arguments that determine
+** the default size of lookaside memory on each [database connection].
+** The first argument is the
 ** size of each lookaside buffer slot and the second is the number of
-** slots allocated to each database connection.)^  ^(This option sets the
-** default lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
-** verb to [sqlite3_db_config()] can be used to change the lookaside
+** slots allocated to each database connection.)^  ^(SQLITE_CONFIG_LOOKASIDE
+** sets the default lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
+** option to [sqlite3_db_config()] can be used to change the lookaside
 ** configuration on individual connections.)^ 

 **
 ** [[SQLITE_CONFIG_PCACHE2]] 
SQLITE_CONFIG_PCACHE2

-** 
 ^(This option takes a single argument which is a pointer to
-** an [sqlite3_pcache_methods2] object.  This object specifies the interface
-** to a custom page cache implementation.)^  ^SQLite makes a copy of the
-** object and uses it for page cache memory allocations.

+** 
 ^(The SQLITE_CONFIG_PCACHE2 option takes a single argument which is 
+** a pointer to an [sqlite3_pcache_methods2] object.  This object specifies
+** the interface to a custom page cache implementation.)^
+** ^SQLite makes a copy of the [sqlite3_pcache_methods2] object.

 **
 ** [[SQLITE_CONFIG_GETPCACHE2]] 
SQLITE_CONFIG_GETPCACHE2

-** 
 ^(This option takes a single argument which is a pointer to an
-** [sqlite3_pcache_methods2] object.  SQLite copies of the current
-** page cache implementation into that object.)^ 

+** 
 ^(The SQLITE_CONFIG_GETPCACHE2 option takes a single argument which
+** is a pointer to an [sqlite3_pcache_methods2] object.  SQLite copies of
+** the current page cache implementation into that object.)^ 

 **
 ** [[SQLITE_CONFIG_LOG]] 
SQLITE_CONFIG_LOG

 ** 
 The SQLITE_CONFIG_LOG option is used to configure the SQLite
@@ -1680,10 +2045,11 @@ struct sqlite3_mem_methods {
 ** function must be threadsafe. 

 **
 ** [[SQLITE_CONFIG_URI]] 
SQLITE_CONFIG_URI
-** 
^(This option takes a single argument of type int. If non-zero, then
-** URI handling is globally enabled. If the parameter is zero, then URI handling
-** is globally disabled.)^ ^If URI handling is globally enabled, all filenames
-** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or
+** 
^(The SQLITE_CONFIG_URI option takes a single argument of type int.
+** If non-zero, then URI handling is globally enabled. If the parameter is zero,
+** then URI handling is globally disabled.)^ ^If URI handling is globally
+** enabled, all filenames passed to [sqlite3_open()], [sqlite3_open_v2()],
+** [sqlite3_open16()] or
 ** specified as part of [ATTACH] commands are interpreted as URIs, regardless
 ** of whether or not the [SQLITE_OPEN_URI] flag is set when the database
 ** connection is opened. ^If it is globally disabled, filenames are
@@ -1693,9 +2059,10 @@ struct sqlite3_mem_methods {
 ** [SQLITE_USE_URI] symbol defined.)^
 **
 ** [[SQLITE_CONFIG_COVERING_INDEX_SCAN]] 
SQLITE_CONFIG_COVERING_INDEX_SCAN
-** 
^This option takes a single integer argument which is interpreted as
-** a boolean in order to enable or disable the use of covering indices for
-** full table scans in the query optimizer.  ^The default setting is determined
+** 
^The SQLITE_CONFIG_COVERING_INDEX_SCAN option takes a single integer
+** argument which is interpreted as a boolean in order to enable or disable
+** the use of covering indices for full table scans in the query optimizer.
+** ^The default setting is determined
 ** by the [SQLITE_ALLOW_COVERING_INDEX_SCAN] compile-time option, or is "on"
 ** if that compile-time option is omitted.
 ** The ability to disable the use of covering indices for full table scans
@@ -1735,18 +2102,51 @@ struct sqlite3_mem_methods {
 ** ^The default setting can be overridden by each database connection using
 ** either the [PRAGMA mmap_size] command, or by using the
 ** [SQLITE_FCNTL_MMAP_SIZE] file control.  ^(The maximum allowed mmap size
-** cannot be changed at run-time.  Nor may the maximum allowed mmap size
-** exceed the compile-time maximum mmap size set by the
+** will be silently truncated if necessary so that it does not exceed the
+** compile-time maximum mmap size set by the
 ** [SQLITE_MAX_MMAP_SIZE] compile-time option.)^
 ** ^If either argument to this option is negative, then that argument is
 ** changed to its compile-time default.
 **
 ** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
 ** 
SQLITE_CONFIG_WIN32_HEAPSIZE
-** 
^This option is only available if SQLite is compiled for Windows
-** with the [SQLITE_WIN32_MALLOC] pre-processor macro defined.
-** SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
+** 
^The SQLITE_CONFIG_WIN32_HEAPSIZE option is only available if SQLite is
+** compiled for Windows with the [SQLITE_WIN32_MALLOC] pre-processor macro
+** defined. ^SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
 ** that specifies the maximum size of the created heap.
+**
+** [[SQLITE_CONFIG_PCACHE_HDRSZ]]
+** 
SQLITE_CONFIG_PCACHE_HDRSZ
+** 
^The SQLITE_CONFIG_PCACHE_HDRSZ option takes a single parameter which
+** is a pointer to an integer and writes into that integer the number of extra
+** bytes per page required for each page in [SQLITE_CONFIG_PAGECACHE].
+** The amount of extra space required can change depending on the compiler,
+** target platform, and SQLite version.
+**
+** [[SQLITE_CONFIG_PMASZ]]
+** 
SQLITE_CONFIG_PMASZ
+** 
^The SQLITE_CONFIG_PMASZ option takes a single parameter which
+** is an unsigned integer and sets the "Minimum PMA Size" for the multithreaded
+** sorter to that integer.  The default minimum PMA Size is set by the
+** [SQLITE_SORTER_PMASZ] compile-time option.  New threads are launched
+** to help with sort operations when multithreaded sorting
+** is enabled (using the [PRAGMA threads] command) and the amount of content
+** to be sorted exceeds the page size times the minimum of the
+** [PRAGMA cache_size] setting and this value.
+**
+** [[SQLITE_CONFIG_STMTJRNL_SPILL]]
+** 
SQLITE_CONFIG_STMTJRNL_SPILL
+** 
^The SQLITE_CONFIG_STMTJRNL_SPILL option takes a single parameter which
+** becomes the [statement journal] spill-to-disk threshold.  
+** [Statement journals] are held in memory until their size (in bytes)
+** exceeds this threshold, at which point they are written to disk.
+** Or if the threshold is -1, statement journals are always held
+** exclusively in memory.
+** Since many statement journals never become large, setting the spill
+** threshold to a value such as 64KiB can greatly reduce the amount of
+** I/O required to support statement rollback.
+** The default value for this setting is controlled by the
+** [SQLITE_STMTJRNL_SPILL] compile-time option.
 ** 
 */
 #define SQLITE_CONFIG_SINGLETHREAD  1  /* nil */
@@ -1772,6 +2172,9 @@ struct sqlite3_mem_methods {
 #define SQLITE_CONFIG_SQLLOG       21  /* xSqllog, void* */
 #define SQLITE_CONFIG_MMAP_SIZE    22  /* sqlite3_int64, sqlite3_int64 */
 #define SQLITE_CONFIG_WIN32_HEAPSIZE      23  /* int nByte */
+#define SQLITE_CONFIG_PCACHE_HDRSZ        24  /* int *psz */
+#define SQLITE_CONFIG_PMASZ               25  /* unsigned int szPma */
+#define SQLITE_CONFIG_STMTJRNL_SPILL      26  /* int nByte */
 
 /*
 ** CAPI3REF: Database Connection Configuration Options
@@ -1829,15 +2232,71 @@ struct sqlite3_mem_methods {
 ** following this call.  The second parameter may be a NULL pointer, in
 ** which case the trigger setting is not reported back. 

 **
+** 
SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER

+** 
 ^This option is used to enable or disable the two-argument
+** version of the [fts3_tokenizer()] function which is part of the
+** [FTS3] full-text search engine extension.
+** There should be two additional arguments.
+** The first argument is an integer which is 0 to disable fts3_tokenizer() or
+** positive to enable fts3_tokenizer() or negative to leave the setting
+** unchanged.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether fts3_tokenizer is disabled or enabled
+** following this call.  The second parameter may be a NULL pointer, in
+** which case the new setting is not reported back. 

+**
+** 
SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION

+** 
 ^This option is used to enable or disable the [sqlite3_load_extension()]
+** interface independently of the [load_extension()] SQL function.
+** The [sqlite3_enable_load_extension()] API enables or disables both the
+** C-API [sqlite3_load_extension()] and the SQL function [load_extension()].
+** There should be two additional arguments.
+** When the first argument to this interface is 1, then only the C-API is
+** enabled and the SQL function remains disabled.  If the first argument to
+** this interface is 0, then both the C-API and the SQL function are disabled.
+** If the first argument is -1, then no changes are made to state of either the
+** C-API or the SQL function.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether [sqlite3_load_extension()] interface
+** is disabled or enabled following this call.  The second parameter may
+** be a NULL pointer, in which case the new setting is not reported back.
+** 

+**
+** 
SQLITE_DBCONFIG_MAINDBNAME

+** 
 ^This option is used to change the name of the "main" database
+** schema.  ^The sole argument is a pointer to a constant UTF8 string
+** which will become the new schema name in place of "main".  ^SQLite
+** does not make a copy of the new main schema name string, so the application
+** must ensure that the argument passed into this DBCONFIG option is unchanged
+** until after the database connection closes.
+** 

+**
+** 
SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE

+** 
 Usually, when a database in wal mode is closed or detached from a 
+** database handle, SQLite checks if this will mean that there are now no 
+** connections at all to the database. If so, it performs a checkpoint 
+** operation before closing the connection. This option may be used to
+** override this behaviour. The first parameter passed to this operation
+** is an integer - non-zero to disable checkpoints-on-close, or zero (the
+** default) to enable them. The second parameter is a pointer to an integer
+** into which is written 0 or 1 to indicate whether checkpoints-on-close
+** have been disabled - 0 if they are not disabled, 1 if they are.
+** 

+**
 ** 
 */
-#define SQLITE_DBCONFIG_LOOKASIDE       1001  /* void* int int */
-#define SQLITE_DBCONFIG_ENABLE_FKEY     1002  /* int int* */
-#define SQLITE_DBCONFIG_ENABLE_TRIGGER  1003  /* int int* */
+#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
+#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
+#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
+#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
 
 
 /*
 ** CAPI3REF: Enable Or Disable Extended Result Codes
+** METHOD: sqlite3
 **
 ** ^The sqlite3_extended_result_codes() routine enables or disables the
 ** [extended result codes] feature of SQLite. ^The extended result
@@ -1847,6 +2306,7 @@ SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff);
 
 /*
 ** CAPI3REF: Last Insert Rowid
+** METHOD: sqlite3
 **
 ** ^Each entry in most SQLite tables (except for [WITHOUT ROWID] tables)
 ** has a unique 64-bit signed
@@ -1898,48 +2358,47 @@ SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);
 
 /*
 ** CAPI3REF: Count The Number Of Rows Modified
+** METHOD: sqlite3
 **
-** ^This function returns the number of database rows that were changed
-** or inserted or deleted by the most recently completed SQL statement
-** on the [database connection] specified by the first parameter.
-** ^(Only changes that are directly specified by the [INSERT], [UPDATE],
-** or [DELETE] statement are counted.  Auxiliary changes caused by
-** triggers or [foreign key actions] are not counted.)^ Use the
-** [sqlite3_total_changes()] function to find the total number of changes
-** including changes caused by triggers and foreign key actions.
+** ^This function returns the number of rows modified, inserted or
+** deleted by the most recently completed INSERT, UPDATE or DELETE
+** statement on the database connection specified by the only parameter.
+** ^Executing any other type of SQL statement does not modify the value
+** returned by this function.
 **
-** ^Changes to a view that are simulated by an [INSTEAD OF trigger]
-** are not counted.  Only real table changes are counted.
+** ^Only changes made directly by the INSERT, UPDATE or DELETE statement are
+** considered - auxiliary changes caused by [CREATE TRIGGER | triggers], 
+** [foreign key actions] or [REPLACE] constraint resolution are not counted.
+** 
+** Changes to a view that are intercepted by 
+** [INSTEAD OF trigger | INSTEAD OF triggers] are not counted. ^The value 
+** returned by sqlite3_changes() immediately after an INSERT, UPDATE or 
+** DELETE statement run on a view is always zero. Only changes made to real 
+** tables are counted.
 **
-** ^(A "row change" is a change to a single row of a single table
-** caused by an INSERT, DELETE, or UPDATE statement.  Rows that
-** are changed as side effects of [REPLACE] constraint resolution,
-** rollback, ABORT processing, [DROP TABLE], or by any other
-** mechanisms do not count as direct row changes.)^
-**
-** A "trigger context" is a scope of execution that begins and
-** ends with the script of a [CREATE TRIGGER | trigger]. 
-** Most SQL statements are
-** evaluated outside of any trigger.  This is the "top level"
-** trigger context.  If a trigger fires from the top level, a
-** new trigger context is entered for the duration of that one
-** trigger.  Subtriggers create subcontexts for their duration.
-**
-** ^Calling [sqlite3_exec()] or [sqlite3_step()] recursively does
-** not create a new trigger context.
-**
-** ^This function returns the number of direct row changes in the
-** most recent INSERT, UPDATE, or DELETE statement within the same
-** trigger context.
-**
-** ^Thus, when called from the top level, this function returns the
-** number of changes in the most recent INSERT, UPDATE, or DELETE
-** that also occurred at the top level.  ^(Within the body of a trigger,
-** the sqlite3_changes() interface can be called to find the number of
-** changes in the most recently completed INSERT, UPDATE, or DELETE
-** statement within the body of the same trigger.
-** However, the number returned does not include changes
-** caused by subtriggers since those have their own context.)^
+** Things are more complicated if the sqlite3_changes() function is
+** executed while a trigger program is running. This may happen if the
+** program uses the [changes() SQL function], or if some other callback
+** function invokes sqlite3_changes() directly. Essentially:
+** 
+** 
    
+**   
  •  ^(Before entering a trigger program the value returned by
+**        sqlite3_changes() function is saved. After the trigger program 
+**        has finished, the original value is restored.)^
+** 
+**   
  •  ^(Within a trigger program each INSERT, UPDATE and DELETE 
+**        statement sets the value returned by sqlite3_changes() 
+**        upon completion as normal. Of course, this value will not include 
+**        any changes performed by sub-triggers, as the sqlite3_changes() 
+**        value will be saved and restored after each sub-trigger has run.)^
+** 

+** 
+** ^This means that if the changes() SQL function (or similar) is used
+** by the first INSERT, UPDATE or DELETE statement within a trigger, it 
+** returns the value as set when the calling statement began executing.
+** ^If it is used by the second or subsequent such statement within a trigger 
+** program, the value returned reflects the number of rows modified by the 
+** previous INSERT, UPDATE or DELETE statement within the same trigger.
 **
 ** See also the [sqlite3_total_changes()] interface, the
 ** [count_changes pragma], and the [changes() SQL function].
@@ -1952,21 +2411,19 @@ SQLITE_API int sqlite3_changes(sqlite3*);
 
 /*
 ** CAPI3REF: Total Number Of Rows Modified
+** METHOD: sqlite3
 **
-** ^This function returns the number of row changes caused by [INSERT],
-** [UPDATE] or [DELETE] statements since the [database connection] was opened.
-** ^(The count returned by sqlite3_total_changes() includes all changes
-** from all [CREATE TRIGGER | trigger] contexts and changes made by
-** [foreign key actions]. However,
-** the count does not include changes used to implement [REPLACE] constraints,
-** do rollbacks or ABORT processing, or [DROP TABLE] processing.  The
-** count does not include rows of views that fire an [INSTEAD OF trigger],
-** though if the INSTEAD OF trigger makes changes of its own, those changes 
-** are counted.)^
-** ^The sqlite3_total_changes() function counts the changes as soon as
-** the statement that makes them is completed (when the statement handle
-** is passed to [sqlite3_reset()] or [sqlite3_finalize()]).
-**
+** ^This function returns the total number of rows inserted, modified or
+** deleted by all [INSERT], [UPDATE] or [DELETE] statements completed
+** since the database connection was opened, including those executed as
+** part of trigger programs. ^Executing any other type of SQL statement
+** does not affect the value returned by sqlite3_total_changes().
+** 
+** ^Changes made as part of [foreign key actions] are included in the
+** count, but those made as part of REPLACE constraint resolution are
+** not. ^Changes to a view that are intercepted by INSTEAD OF triggers 
+** are not counted.
+** 
 ** See also the [sqlite3_changes()] interface, the
 ** [count_changes pragma], and the [total_changes() SQL function].
 **
@@ -1978,6 +2435,7 @@ SQLITE_API int sqlite3_total_changes(sqlite3*);
 
 /*
 ** CAPI3REF: Interrupt A Long-Running Query
+** METHOD: sqlite3
 **
 ** ^This function causes any pending database operation to abort and
 ** return at its earliest opportunity. This routine is typically
@@ -2053,28 +2511,36 @@ SQLITE_API int sqlite3_complete16(const void *sql);
 
 /*
 ** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors
+** KEYWORDS: {busy-handler callback} {busy handler}
+** METHOD: sqlite3
 **
-** ^This routine sets a callback function that might be invoked whenever
-** an attempt is made to open a database table that another thread
-** or process has locked.
+** ^The sqlite3_busy_handler(D,X,P) routine sets a callback function X
+** that might be invoked with argument P whenever
+** an attempt is made to access a database table associated with
+** [database connection] D when another thread
+** or process has the table locked.
+** The sqlite3_busy_handler() interface is used to implement
+** [sqlite3_busy_timeout()] and [PRAGMA busy_timeout].
 **
-** ^If the busy callback is NULL, then [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED]
+** ^If the busy callback is NULL, then [SQLITE_BUSY]
 ** is returned immediately upon encountering the lock.  ^If the busy callback
 ** is not NULL, then the callback might be invoked with two arguments.
 **
 ** ^The first argument to the busy handler is a copy of the void* pointer which
 ** is the third argument to sqlite3_busy_handler().  ^The second argument to
 ** the busy handler callback is the number of times that the busy handler has
-** been invoked for this locking event.  ^If the
+** been invoked previously for the same locking event.  ^If the
 ** busy callback returns 0, then no additional attempts are made to
-** access the database and [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] is returned.
+** access the database and [SQLITE_BUSY] is returned
+** to the application.
 ** ^If the callback returns non-zero, then another attempt
-** is made to open the database for reading and the cycle repeats.
+** is made to access the database and the cycle repeats.
 **
 ** The presence of a busy handler does not guarantee that it will be invoked
 ** when there is lock contention. ^If SQLite determines that invoking the busy
 ** handler could result in a deadlock, it will go ahead and return [SQLITE_BUSY]
-** or [SQLITE_IOERR_BLOCKED] instead of invoking the busy handler.
+** to the application instead of invoking the 
+** busy handler.
 ** Consider a scenario where one process is holding a read lock that
 ** it is trying to promote to a reserved lock and
 ** a second process is holding a reserved lock that it is trying
@@ -2088,57 +2554,48 @@ SQLITE_API int sqlite3_complete16(const void *sql);
 **
 ** ^The default busy callback is NULL.
 **
-** ^The [SQLITE_BUSY] error is converted to [SQLITE_IOERR_BLOCKED]
-** when SQLite is in the middle of a large transaction where all the
-** changes will not fit into the in-memory cache.  SQLite will
-** already hold a RESERVED lock on the database file, but it needs
-** to promote this lock to EXCLUSIVE so that it can spill cache
-** pages into the database file without harm to concurrent
-** readers.  ^If it is unable to promote the lock, then the in-memory
-** cache will be left in an inconsistent state and so the error
-** code is promoted from the relatively benign [SQLITE_BUSY] to
-** the more severe [SQLITE_IOERR_BLOCKED].  ^This error code promotion
-** forces an automatic rollback of the changes.  See the
-** 
-** CorruptionFollowingBusyError wiki page for a discussion of why
-** this is important.
-**
 ** ^(There can only be a single busy handler defined for each
 ** [database connection].  Setting a new busy handler clears any
 ** previously set handler.)^  ^Note that calling [sqlite3_busy_timeout()]
-** will also set or clear the busy handler.
+** or evaluating [PRAGMA busy_timeout=N] will change the
+** busy handler and thus clear any previously set busy handler.
 **
 ** The busy callback should not take any actions which modify the
-** database connection that invoked the busy handler.  Any such actions
+** database connection that invoked the busy handler.  In other words,
+** the busy handler is not reentrant.  Any such actions
 ** result in undefined behavior.
 ** 
 ** A busy handler must not close the database connection
 ** or [prepared statement] that invoked the busy handler.
 */
-SQLITE_API int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*);
+SQLITE_API int sqlite3_busy_handler(sqlite3*,int(*)(void*,int),void*);
 
 /*
 ** CAPI3REF: Set A Busy Timeout
+** METHOD: sqlite3
 **
 ** ^This routine sets a [sqlite3_busy_handler | busy handler] that sleeps
 ** for a specified amount of time when a table is locked.  ^The handler
 ** will sleep multiple times until at least "ms" milliseconds of sleeping
 ** have accumulated.  ^After at least "ms" milliseconds of sleeping,
 ** the handler returns 0 which causes [sqlite3_step()] to return
-** [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED].
+** [SQLITE_BUSY].
 **
 ** ^Calling this routine with an argument less than or equal to zero
 ** turns off all busy handlers.
 **
 ** ^(There can only be a single busy handler for a particular
-** [database connection] any any given moment.  If another busy handler
+** [database connection] at any given moment.  If another busy handler
 ** was defined  (using [sqlite3_busy_handler()]) prior to calling
 ** this routine, that other busy handler is cleared.)^
+**
+** See also:  [PRAGMA busy_timeout]
 */
 SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms);
 
 /*
 ** CAPI3REF: Convenience Routines For Running Queries
+** METHOD: sqlite3
 **
 ** This is a legacy interface that is preserved for backwards compatibility.
 ** Use of this interface is not recommended.
@@ -2224,6 +2681,10 @@ SQLITE_API void sqlite3_free_table(char **result);
 **
 ** These routines are work-alikes of the "printf()" family of functions
 ** from the standard C library.
+** These routines understand most of the common K&R formatting options,
+** plus some additional non-standard formats, detailed below.
+** Note that some of the more obscure formatting options from recent
+** C-library standards are omitted from this implementation.
 **
 ** ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their
 ** results into memory obtained from [sqlite3_malloc()].
@@ -2256,7 +2717,7 @@ SQLITE_API void sqlite3_free_table(char **result);
 ** These routines all implement some additional formatting
 ** options that are useful for constructing SQL statements.
 ** All of the usual printf() formatting options apply.  In addition, there
-** is are "%q", "%Q", and "%z" options.
+** is are "%q", "%Q", "%w" and "%z" options.
 **
 ** ^(The %q option works like %s in that it substitutes a nul-terminated
 ** string from the argument list.  But %q also doubles every '\'' character.
@@ -2309,6 +2770,12 @@ SQLITE_API void sqlite3_free_table(char **result);
 ** The code above will render a correct SQL statement in the zSQL
 ** variable even if the zText variable is a NULL pointer.
 **
+** ^(The "%w" formatting option is like "%q" except that it expects to
+** be contained within double-quotes instead of single quotes, and it
+** escapes the double-quote character instead of the single-quote
+** character.)^  The "%w" formatting option is intended for safely inserting
+** table and column names into a constructed SQL statement.
+**
 ** ^(The "%z" formatting option works like "%s" but with the
 ** addition that after the string has been read and copied into
 ** the result, [sqlite3_free()] is called on the input string.)^
@@ -2333,6 +2800,10 @@ SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
 ** sqlite3_malloc() is zero or negative then sqlite3_malloc() returns
 ** a NULL pointer.
 **
+** ^The sqlite3_malloc64(N) routine works just like
+** sqlite3_malloc(N) except that N is an unsigned 64-bit integer instead
+** of a signed 32-bit integer.
+**
 ** ^Calling sqlite3_free() with a pointer previously returned
 ** by sqlite3_malloc() or sqlite3_realloc() releases that memory so
 ** that it might be reused.  ^The sqlite3_free() routine is
@@ -2344,24 +2815,38 @@ SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
 ** might result if sqlite3_free() is called with a non-NULL pointer that
 ** was not obtained from sqlite3_malloc() or sqlite3_realloc().
 **
-** ^(The sqlite3_realloc() interface attempts to resize a
-** prior memory allocation to be at least N bytes, where N is the
-** second parameter.  The memory allocation to be resized is the first
-** parameter.)^ ^ If the first parameter to sqlite3_realloc()
+** ^The sqlite3_realloc(X,N) interface attempts to resize a
+** prior memory allocation X to be at least N bytes.
+** ^If the X parameter to sqlite3_realloc(X,N)
 ** is a NULL pointer then its behavior is identical to calling
-** sqlite3_malloc(N) where N is the second parameter to sqlite3_realloc().
-** ^If the second parameter to sqlite3_realloc() is zero or
+** sqlite3_malloc(N).
+** ^If the N parameter to sqlite3_realloc(X,N) is zero or
 ** negative then the behavior is exactly the same as calling
-** sqlite3_free(P) where P is the first parameter to sqlite3_realloc().
-** ^sqlite3_realloc() returns a pointer to a memory allocation
-** of at least N bytes in size or NULL if sufficient memory is unavailable.
+** sqlite3_free(X).
+** ^sqlite3_realloc(X,N) returns a pointer to a memory allocation
+** of at least N bytes in size or NULL if insufficient memory is available.
 ** ^If M is the size of the prior allocation, then min(N,M) bytes
 ** of the prior allocation are copied into the beginning of buffer returned
-** by sqlite3_realloc() and the prior allocation is freed.
-** ^If sqlite3_realloc() returns NULL, then the prior allocation
-** is not freed.
+** by sqlite3_realloc(X,N) and the prior allocation is freed.
+** ^If sqlite3_realloc(X,N) returns NULL and N is positive, then the
+** prior allocation is not freed.
 **
-** ^The memory returned by sqlite3_malloc() and sqlite3_realloc()
+** ^The sqlite3_realloc64(X,N) interfaces works the same as
+** sqlite3_realloc(X,N) except that N is a 64-bit unsigned integer instead
+** of a 32-bit signed integer.
+**
+** ^If X is a memory allocation previously obtained from sqlite3_malloc(),
+** sqlite3_malloc64(), sqlite3_realloc(), or sqlite3_realloc64(), then
+** sqlite3_msize(X) returns the size of that memory allocation in bytes.
+** ^The value returned by sqlite3_msize(X) might be larger than the number
+** of bytes requested when X was allocated.  ^If X is a NULL pointer then
+** sqlite3_msize(X) returns zero.  If X points to something that is not
+** the beginning of memory allocation, or if it points to a formerly
+** valid memory allocation that has now been freed, then the behavior
+** of sqlite3_msize(X) is undefined and possibly harmful.
+**
+** ^The memory returned by sqlite3_malloc(), sqlite3_realloc(),
+** sqlite3_malloc64(), and sqlite3_realloc64()
 ** is always aligned to at least an 8 byte boundary, or to a
 ** 4 byte boundary if the [SQLITE_4_BYTE_ALIGNED_MALLOC] compile-time
 ** option is used.
@@ -2389,8 +2874,11 @@ SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
 ** [sqlite3_free()] or [sqlite3_realloc()].
 */
 SQLITE_API void *sqlite3_malloc(int);
+SQLITE_API void *sqlite3_malloc64(sqlite3_uint64);
 SQLITE_API void *sqlite3_realloc(void*, int);
+SQLITE_API void *sqlite3_realloc64(void*, sqlite3_uint64);
 SQLITE_API void sqlite3_free(void*);
+SQLITE_API sqlite3_uint64 sqlite3_msize(void*);
 
 /*
 ** CAPI3REF: Memory Allocator Statistics
@@ -2428,13 +2916,14 @@ SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
 ** applications to access the same PRNG for other purposes.
 **
 ** ^A call to this routine stores N bytes of randomness into buffer P.
-** ^If N is less than one, then P can be a NULL pointer.
+** ^The P parameter can be a NULL pointer.
 **
 ** ^If this routine has not been previously called or if the previous
-** call had N less than one, then the PRNG is seeded using randomness
-** obtained from the xRandomness method of the default [sqlite3_vfs] object.
-** ^If the previous call to this routine had an N of 1 or more then
-** the pseudo-randomness is generated
+** call had N less than one or a NULL pointer for P, then the PRNG is
+** seeded using randomness obtained from the xRandomness method of
+** the default [sqlite3_vfs] object.
+** ^If the previous call to this routine had an N of 1 or more and a
+** non-NULL P then the pseudo-randomness is generated
 ** internally and without recourse to the [sqlite3_vfs] xRandomness
 ** method.
 */
@@ -2442,6 +2931,7 @@ SQLITE_API void sqlite3_randomness(int N, void *P);
 
 /*
 ** CAPI3REF: Compile-Time Authorization Callbacks
+** METHOD: sqlite3
 **
 ** ^This routine registers an authorizer callback with a particular
 ** [database connection], supplied in the first argument.
@@ -2535,8 +3025,8 @@ SQLITE_API int sqlite3_set_authorizer(
 ** [sqlite3_set_authorizer | authorizer documentation] for additional
 ** information.
 **
-** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code]
-** from the [sqlite3_vtab_on_conflict()] interface.
+** Note that SQLITE_IGNORE is also used as a [conflict resolution mode]
+** returned from the [sqlite3_vtab_on_conflict()] interface.
 */
 #define SQLITE_DENY   1   /* Abort the SQL statement with an error */
 #define SQLITE_IGNORE 2   /* Don't allow access, but don't generate an error */
@@ -2598,6 +3088,10 @@ SQLITE_API int sqlite3_set_authorizer(
 
 /*
 ** CAPI3REF: Tracing And Profiling Functions
+** METHOD: sqlite3
+**
+** These routines are deprecated. Use the [sqlite3_trace_v2()] interface
+** instead of the routines described here.
 **
 ** These routines register callback functions that can be used for
 ** tracing and profiling the execution of SQL statements.
@@ -2624,12 +3118,107 @@ SQLITE_API int sqlite3_set_authorizer(
 ** sqlite3_profile() function is considered experimental and is
 ** subject to change in future versions of SQLite.
 */
-SQLITE_API void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*);
-SQLITE_API SQLITE_EXPERIMENTAL void *sqlite3_profile(sqlite3*,
+SQLITE_API SQLITE_DEPRECATED void *sqlite3_trace(sqlite3*,
+   void(*xTrace)(void*,const char*), void*);
+SQLITE_API SQLITE_DEPRECATED void *sqlite3_profile(sqlite3*,
    void(*xProfile)(void*,const char*,sqlite3_uint64), void*);
 
+/*
+** CAPI3REF: SQL Trace Event Codes
+** KEYWORDS: SQLITE_TRACE
+**
+** These constants identify classes of events that can be monitored
+** using the [sqlite3_trace_v2()] tracing logic.  The third argument
+** to [sqlite3_trace_v2()] is an OR-ed combination of one or more of
+** the following constants.  ^The first argument to the trace callback
+** is one of the following constants.
+**
+** New tracing constants may be added in future releases.
+**
+** ^A trace callback has four arguments: xCallback(T,C,P,X).
+** ^The T argument is one of the integer type codes above.
+** ^The C argument is a copy of the context pointer passed in as the
+** fourth argument to [sqlite3_trace_v2()].
+** The P and X arguments are pointers whose meanings depend on T.
+**
+** 

+** [[SQLITE_TRACE_STMT]] 
SQLITE_TRACE_STMT

+** 
^An SQLITE_TRACE_STMT callback is invoked when a prepared statement
+** first begins running and possibly at other times during the
+** execution of the prepared statement, such as at the start of each
+** trigger subprogram. ^The P argument is a pointer to the
+** [prepared statement]. ^The X argument is a pointer to a string which
+** is the unexpanded SQL text of the prepared statement or an SQL comment 
+** that indicates the invocation of a trigger.  ^The callback can compute
+** the same text that would have been returned by the legacy [sqlite3_trace()]
+** interface by using the X argument when X begins with "--" and invoking
+** [sqlite3_expanded_sql(P)] otherwise.
+**
+** [[SQLITE_TRACE_PROFILE]] 
SQLITE_TRACE_PROFILE

+** 
^An SQLITE_TRACE_PROFILE callback provides approximately the same
+** information as is provided by the [sqlite3_profile()] callback.
+** ^The P argument is a pointer to the [prepared statement] and the
+** X argument points to a 64-bit integer which is the estimated of
+** the number of nanosecond that the prepared statement took to run.
+** ^The SQLITE_TRACE_PROFILE callback is invoked when the statement finishes.
+**
+** [[SQLITE_TRACE_ROW]] 
SQLITE_TRACE_ROW

+** 
^An SQLITE_TRACE_ROW callback is invoked whenever a prepared
+** statement generates a single row of result.  
+** ^The P argument is a pointer to the [prepared statement] and the
+** X argument is unused.
+**
+** [[SQLITE_TRACE_CLOSE]] 
SQLITE_TRACE_CLOSE

+** 
^An SQLITE_TRACE_CLOSE callback is invoked when a database
+** connection closes.
+** ^The P argument is a pointer to the [database connection] object
+** and the X argument is unused.
+** 

+*/
+#define SQLITE_TRACE_STMT       0x01
+#define SQLITE_TRACE_PROFILE    0x02
+#define SQLITE_TRACE_ROW        0x04
+#define SQLITE_TRACE_CLOSE      0x08
+
+/*
+** CAPI3REF: SQL Trace Hook
+** METHOD: sqlite3
+**
+** ^The sqlite3_trace_v2(D,M,X,P) interface registers a trace callback
+** function X against [database connection] D, using property mask M
+** and context pointer P.  ^If the X callback is
+** NULL or if the M mask is zero, then tracing is disabled.  The
+** M argument should be the bitwise OR-ed combination of
+** zero or more [SQLITE_TRACE] constants.
+**
+** ^Each call to either sqlite3_trace() or sqlite3_trace_v2() overrides 
+** (cancels) any prior calls to sqlite3_trace() or sqlite3_trace_v2().
+**
+** ^The X callback is invoked whenever any of the events identified by 
+** mask M occur.  ^The integer return value from the callback is currently
+** ignored, though this may change in future releases.  Callback
+** implementations should return zero to ensure future compatibility.
+**
+** ^A trace callback is invoked with four arguments: callback(T,C,P,X).
+** ^The T argument is one of the [SQLITE_TRACE]
+** constants to indicate why the callback was invoked.
+** ^The C argument is a copy of the context pointer.
+** The P and X arguments are pointers whose meanings depend on T.
+**
+** The sqlite3_trace_v2() interface is intended to replace the legacy
+** interfaces [sqlite3_trace()] and [sqlite3_profile()], both of which
+** are deprecated.
+*/
+SQLITE_API int sqlite3_trace_v2(
+  sqlite3*,
+  unsigned uMask,
+  int(*xCallback)(unsigned,void*,void*,void*),
+  void *pCtx
+);
+
 /*
 ** CAPI3REF: Query Progress Callbacks
+** METHOD: sqlite3
 **
 ** ^The sqlite3_progress_handler(D,N,X,P) interface causes the callback
 ** function X to be invoked periodically during long running calls to
@@ -2663,6 +3252,7 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 
 /*
 ** CAPI3REF: Opening A New Database Connection
+** CONSTRUCTOR: sqlite3
 **
 ** ^These routines open an SQLite database file as specified by the 
 ** filename argument. ^The filename argument is interpreted as UTF-8 for
@@ -2677,9 +3267,9 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 ** an English language description of the error following a failure of any
 ** of the sqlite3_open() routines.
 **
-** ^The default encoding for the database will be UTF-8 if
-** sqlite3_open() or sqlite3_open_v2() is called and
-** UTF-16 in the native byte order if sqlite3_open16() is used.
+** ^The default encoding will be UTF-8 for databases created using
+** sqlite3_open() or sqlite3_open_v2().  ^The default encoding for databases
+** created using sqlite3_open16() will be UTF-16 in the native byte order.
 **
 ** Whether or not an error occurs when it is opened, resources
 ** associated with the [database connection] handle should be released by
@@ -2767,13 +3357,14 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 ** then it is interpreted as an absolute path. ^If the path does not begin 
 ** with a '/' (meaning that the authority section is omitted from the URI)
 ** then the path is interpreted as a relative path. 
-** ^On windows, the first component of an absolute path 
-** is a drive specification (e.g. "C:").
+** ^(On windows, the first component of an absolute path 
+** is a drive specification (e.g. "C:").)^
 **
 ** [[core URI query parameters]]
 ** The query component of a URI may contain parameters that are interpreted
 ** either by SQLite itself, or by a [VFS | custom VFS implementation].
-** SQLite interprets the following three query parameters:
+** SQLite and its built-in [VFSes] interpret the
+** following query parameters:
 **
 ** 
    
 **   
  •  vfs: ^The "vfs" parameter may be used to specify the name of
@@ -2807,6 +3398,28 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 **     ^If sqlite3_open_v2() is used and the "cache" parameter is present in
 **     a URI filename, its value overrides any behavior requested by setting
 **     SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
+**
+**  
  •  psow: ^The psow parameter indicates whether or not the
+**     [powersafe overwrite] property does or does not apply to the
+**     storage media on which the database file resides.
+**
+**  
  •  nolock: ^The nolock parameter is a boolean query parameter
+**     which if set disables file locking in rollback journal modes.  This
+**     is useful for accessing a database on a filesystem that does not
+**     support locking.  Caution:  Database corruption might result if two
+**     or more processes write to the same database and any one of those
+**     processes uses nolock=1.
+**
+**  
  •  immutable: ^The immutable parameter is a boolean query
+**     parameter that indicates that the database file is stored on
+**     read-only media.  ^When immutable is set, SQLite assumes that the
+**     database file cannot be changed, even by a process with higher
+**     privilege, and so the database is opened read-only and all locking
+**     and change detection is disabled.  Caution: Setting the immutable
+**     property on a database file that does in fact change can result
+**     in incorrect query results and/or [SQLITE_CORRUPT] errors.
+**     See also: [SQLITE_IOCAP_IMMUTABLE].
+**       
 ** 

 **
 ** ^Specifying an unknown parameter in the query component of a URI is not an
@@ -2836,8 +3449,9 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 **          Open file "data.db" in the current directory for read-only access.
 **          Regardless of whether or not shared-cache mode is enabled by
 **          default, use a private cache.
-**
file:/home/fred/data.db?vfs=unix-nolock -** Open file "/home/fred/data.db". Use the special VFS "unix-nolock". +**
file:/home/fred/data.db?vfs=unix-dotfile +** Open file "/home/fred/data.db". Use the special VFS "unix-dotfile" +** that uses dot-files in place of posix advisory locking. **
file:data.db?mode=readonly ** An error. "readonly" is not a valid option for the "mode" parameter. **
@@ -2924,12 +3538,15 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int /* ** CAPI3REF: Error Codes And Messages +** METHOD: sqlite3 ** -** ^The sqlite3_errcode() interface returns the numeric [result code] or -** [extended result code] for the most recent failed sqlite3_* API call -** associated with a [database connection]. If a prior API call failed -** but the most recent API call succeeded, the return value from -** sqlite3_errcode() is undefined. ^The sqlite3_extended_errcode() +** ^If the most recent sqlite3_* API call associated with +** [database connection] D failed, then the sqlite3_errcode(D) interface +** returns the numeric [result code] or [extended result code] for that +** API call. +** If the most recent API call was successful, +** then the return value from sqlite3_errcode() is undefined. +** ^The sqlite3_extended_errcode() ** interface is the same except that it always returns the ** [extended result code] even when extended result codes are ** disabled. @@ -2967,33 +3584,34 @@ SQLITE_API const void *sqlite3_errmsg16(sqlite3*); SQLITE_API const char *sqlite3_errstr(int); /* -** CAPI3REF: SQL Statement Object +** CAPI3REF: Prepared Statement Object ** KEYWORDS: {prepared statement} {prepared statements} ** -** An instance of this object represents a single SQL statement. -** This object is variously known as a "prepared statement" or a -** "compiled SQL statement" or simply as a "statement". +** An instance of this object represents a single SQL statement that +** has been compiled into binary form and is ready to be evaluated. ** -** The life of a statement object goes something like this: +** Think of each SQL statement as a separate computer program. The +** original SQL text is source code. A prepared statement object +** is the compiled object code. All SQL must be converted into a +** prepared statement before it can be run. +** +** The life-cycle of a prepared statement object usually goes like this: ** **
    -**
  1. Create the object using [sqlite3_prepare_v2()] or a related -** function. -**
  2. Bind values to [host parameters] using the sqlite3_bind_*() +**
  3. Create the prepared statement object using [sqlite3_prepare_v2()]. +**
  4. Bind values to [parameters] using the sqlite3_bind_*() ** interfaces. **
  5. Run the SQL by calling [sqlite3_step()] one or more times. -**
  6. Reset the statement using [sqlite3_reset()] then go back +**
  7. Reset the prepared statement using [sqlite3_reset()] then go back ** to step 2. Do this zero or more times. **
  8. Destroy the object using [sqlite3_finalize()]. **
-** -** Refer to documentation on individual methods above for additional -** information. */ typedef struct sqlite3_stmt sqlite3_stmt; /* ** CAPI3REF: Run-time Limits +** METHOD: sqlite3 ** ** ^(This interface allows the size of various constructs to be limited ** on a connection by connection basis. The first parameter is the @@ -3083,6 +3701,10 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); ** ** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(
SQLITE_LIMIT_TRIGGER_DEPTH
**
The maximum depth of recursion for triggers.
)^ +** +** [[SQLITE_LIMIT_WORKER_THREADS]] ^(
SQLITE_LIMIT_WORKER_THREADS
+**
The maximum number of auxiliary worker threads that a single +** [prepared statement] may start.
)^ ** */ #define SQLITE_LIMIT_LENGTH 0 @@ -3096,10 +3718,13 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); #define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8 #define SQLITE_LIMIT_VARIABLE_NUMBER 9 #define SQLITE_LIMIT_TRIGGER_DEPTH 10 +#define SQLITE_LIMIT_WORKER_THREADS 11 /* ** CAPI3REF: Compiling An SQL Statement ** KEYWORDS: {SQL statement compiler} +** METHOD: sqlite3 +** CONSTRUCTOR: sqlite3_stmt ** ** To execute an SQL query, it must first be compiled into a byte-code ** program using one of these routines. @@ -3113,16 +3738,14 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); ** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2() ** use UTF-16. ** -** ^If the nByte argument is less than zero, then zSql is read up to the -** first zero terminator. ^If nByte is non-negative, then it is the maximum -** number of bytes read from zSql. ^When nByte is non-negative, the -** zSql string ends at either the first '\000' or '\u0000' character or -** the nByte-th byte, whichever comes first. If the caller knows -** that the supplied string is nul-terminated, then there is a small -** performance advantage to be gained by passing an nByte parameter that -** is equal to the number of bytes in the input string including -** the nul-terminator bytes as this saves SQLite from having to -** make a copy of the input string. +** ^If the nByte argument is negative, then zSql is read up to the +** first zero terminator. ^If nByte is positive, then it is the +** number of bytes read from zSql. ^If nByte is zero, then no prepared +** statement is generated. +** If the caller knows that the supplied string is nul-terminated, then +** there is a small performance advantage to passing an nByte parameter that +** is the number of bytes in the input string including +** the nul-terminator. ** ** ^If pzTail is not NULL then *pzTail is made to point to the first byte ** past the end of the first SQL statement in zSql. These routines only @@ -3209,15 +3832,41 @@ SQLITE_API int sqlite3_prepare16_v2( /* ** CAPI3REF: Retrieving Statement SQL +** METHOD: sqlite3_stmt ** -** ^This interface can be used to retrieve a saved copy of the original -** SQL text used to create a [prepared statement] if that statement was -** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()]. +** ^The sqlite3_sql(P) interface returns a pointer to a copy of the UTF-8 +** SQL text used to create [prepared statement] P if P was +** created by either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()]. +** ^The sqlite3_expanded_sql(P) interface returns a pointer to a UTF-8 +** string containing the SQL text of prepared statement P with +** [bound parameters] expanded. +** +** ^(For example, if a prepared statement is created using the SQL +** text "SELECT $abc,:xyz" and if parameter $abc is bound to integer 2345 +** and parameter :xyz is unbound, then sqlite3_sql() will return +** the original string, "SELECT $abc,:xyz" but sqlite3_expanded_sql() +** will return "SELECT 2345,NULL".)^ +** +** ^The sqlite3_expanded_sql() interface returns NULL if insufficient memory +** is available to hold the result, or if the result would exceed the +** the maximum string length determined by the [SQLITE_LIMIT_LENGTH]. +** +** ^The [SQLITE_TRACE_SIZE_LIMIT] compile-time option limits the size of +** bound parameter expansions. ^The [SQLITE_OMIT_TRACE] compile-time +** option causes sqlite3_expanded_sql() to always return NULL. +** +** ^The string returned by sqlite3_sql(P) is managed by SQLite and is +** automatically freed when the prepared statement is finalized. +** ^The string returned by sqlite3_expanded_sql(P), on the other hand, +** is obtained from [sqlite3_malloc()] and must be free by the application +** by passing it to [sqlite3_free()]. */ SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); +SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt); /* ** CAPI3REF: Determine If An SQL Statement Writes The Database +** METHOD: sqlite3_stmt ** ** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if ** and only if the [prepared statement] X makes no direct changes to @@ -3244,15 +3893,21 @@ SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); ** sqlite3_stmt_readonly() to return true since, while those statements ** change the configuration of a database connection, they do not make ** changes to the content of the database files on disk. +** ^The sqlite3_stmt_readonly() interface returns true for [BEGIN] since +** [BEGIN] merely sets internal flags, but the [BEGIN|BEGIN IMMEDIATE] and +** [BEGIN|BEGIN EXCLUSIVE] commands do touch the database and so +** sqlite3_stmt_readonly() returns false for those commands. */ SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt); /* ** CAPI3REF: Determine If A Prepared Statement Has Been Reset +** METHOD: sqlite3_stmt ** ** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the ** [prepared statement] S has been stepped at least once using -** [sqlite3_step(S)] but has not run to completion and/or has not +** [sqlite3_step(S)] but has neither run to completion (returned +** [SQLITE_DONE] from [sqlite3_step(S)]) nor ** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) ** interface returns false if S is a NULL pointer. If S is not a ** NULL pointer and is not a pointer to a valid [prepared statement] @@ -3279,7 +3934,9 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt*); ** Some interfaces require a protected sqlite3_value. Other interfaces ** will accept either a protected or an unprotected sqlite3_value. ** Every interface that accepts sqlite3_value arguments specifies -** whether or not it requires a protected sqlite3_value. +** whether or not it requires a protected sqlite3_value. The +** [sqlite3_value_dup()] interface can be used to construct a new +** protected sqlite3_value from an unprotected sqlite3_value. ** ** The terms "protected" and "unprotected" refer to whether or not ** a mutex is held. An internal mutex is held for a protected @@ -3323,6 +3980,7 @@ typedef struct sqlite3_context sqlite3_context; ** CAPI3REF: Binding Values To Prepared Statements ** KEYWORDS: {host parameter} {host parameters} {host parameter name} ** KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding} +** METHOD: sqlite3_stmt ** ** ^(In the SQL statement text input to [sqlite3_prepare_v2()] and its variants, ** literals may be replaced by a [parameter] that matches one of following @@ -3369,18 +4027,18 @@ typedef struct sqlite3_context sqlite3_context; ** If the fourth parameter to sqlite3_bind_blob() is negative, then ** the behavior is undefined. ** If a non-negative fourth parameter is provided to sqlite3_bind_text() -** or sqlite3_bind_text16() then that parameter must be the byte offset +** or sqlite3_bind_text16() or sqlite3_bind_text64() then +** that parameter must be the byte offset ** where the NUL terminator would occur assuming the string were NUL ** terminated. If any NUL characters occur at byte offsets less than ** the value of the fourth parameter then the resulting string value will ** contain embedded NULs. The result of expressions involving strings ** with embedded NULs is undefined. ** -** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and -** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or +** ^The fifth argument to the BLOB and string binding interfaces +** is a destructor used to dispose of the BLOB or ** string after SQLite has finished with it. ^The destructor is called -** to dispose of the BLOB or string even if the call to sqlite3_bind_blob(), -** sqlite3_bind_text(), or sqlite3_bind_text16() fails. +** to dispose of the BLOB or string even if the call to bind API fails. ** ^If the fifth argument is ** the special value [SQLITE_STATIC], then SQLite assumes that the ** information is in static, unmanaged space and does not need to be freed. @@ -3388,6 +4046,14 @@ typedef struct sqlite3_context sqlite3_context; ** SQLite makes its own private copy of the data immediately, before ** the sqlite3_bind_*() routine returns. ** +** ^The sixth argument to sqlite3_bind_text64() must be one of +** [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE] +** to specify the encoding of the text in the third parameter. If +** the sixth argument to sqlite3_bind_text64() is not one of the +** allowed values shown above, or if the text encoding is different +** from the encoding specified by the sixth parameter, then the behavior +** is undefined. +** ** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that ** is filled with zeroes. ^A zeroblob uses a fixed amount of memory ** (just an integer to hold its size) while it is being processed. @@ -3408,6 +4074,9 @@ typedef struct sqlite3_context sqlite3_context; ** ** ^The sqlite3_bind_* routines return [SQLITE_OK] on success or an ** [error code] if anything goes wrong. +** ^[SQLITE_TOOBIG] might be returned if the size of a string or BLOB +** exceeds limits imposed by [sqlite3_limit]([SQLITE_LIMIT_LENGTH]) or +** [SQLITE_MAX_LENGTH]. ** ^[SQLITE_RANGE] is returned if the parameter ** index is out of range. ^[SQLITE_NOMEM] is returned if malloc() fails. ** @@ -3415,17 +4084,23 @@ typedef struct sqlite3_context sqlite3_context; ** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()]. */ SQLITE_API int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*)); +SQLITE_API int sqlite3_bind_blob64(sqlite3_stmt*, int, const void*, sqlite3_uint64, + void(*)(void*)); SQLITE_API int sqlite3_bind_double(sqlite3_stmt*, int, double); SQLITE_API int sqlite3_bind_int(sqlite3_stmt*, int, int); SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64); SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int); -SQLITE_API int sqlite3_bind_text(sqlite3_stmt*, int, const char*, int n, void(*)(void*)); +SQLITE_API int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*)); SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*)); +SQLITE_API int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64, + void(*)(void*), unsigned char encoding); SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*); SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n); +SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64); /* ** CAPI3REF: Number Of SQL Parameters +** METHOD: sqlite3_stmt ** ** ^This routine can be used to find the number of [SQL parameters] ** in a [prepared statement]. SQL parameters are tokens of the @@ -3446,6 +4121,7 @@ SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt*); /* ** CAPI3REF: Name Of A Host Parameter +** METHOD: sqlite3_stmt ** ** ^The sqlite3_bind_parameter_name(P,N) interface returns ** the name of the N-th [SQL parameter] in the [prepared statement] P. @@ -3473,6 +4149,7 @@ SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int); /* ** CAPI3REF: Index Of A Parameter With A Given Name +** METHOD: sqlite3_stmt ** ** ^Return the index of an SQL parameter given its name. ^The ** index value returned is suitable for use as the second @@ -3483,12 +4160,13 @@ SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int); ** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. +** [sqlite3_bind_parameter_name()]. */ SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName); /* ** CAPI3REF: Reset All Bindings On A Prepared Statement +** METHOD: sqlite3_stmt ** ** ^Contrary to the intuition of many, [sqlite3_reset()] does not reset ** the [sqlite3_bind_blob | bindings] on a [prepared statement]. @@ -3498,10 +4176,15 @@ SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*); /* ** CAPI3REF: Number Of Columns In A Result Set +** METHOD: sqlite3_stmt ** ** ^Return the number of columns in the result set returned by the -** [prepared statement]. ^This routine returns 0 if pStmt is an SQL -** statement that does not return data (for example an [UPDATE]). +** [prepared statement]. ^If this routine returns 0, that means the +** [prepared statement] returns no data (for example an [UPDATE]). +** ^However, just because this routine returns a positive number does not +** mean that one or more rows of data will be returned. ^A SELECT statement +** will always have a positive sqlite3_column_count() but depending on the +** WHERE clause constraints and the table content, it might return no rows. ** ** See also: [sqlite3_data_count()] */ @@ -3509,6 +4192,7 @@ SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Column Names In A Result Set +** METHOD: sqlite3_stmt ** ** ^These routines return the name assigned to a particular column ** in the result set of a [SELECT] statement. ^The sqlite3_column_name() @@ -3538,6 +4222,7 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); /* ** CAPI3REF: Source Of Data In A Query Result +** METHOD: sqlite3_stmt ** ** ^These routines provide a means to determine the database, table, and ** table column that is the origin of a particular result column in @@ -3590,6 +4275,7 @@ SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt*,int); /* ** CAPI3REF: Declared Datatype Of A Query Result +** METHOD: sqlite3_stmt ** ** ^(The first parameter is a [prepared statement]. ** If this statement is a [SELECT] statement and the Nth column of the @@ -3622,6 +4308,7 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); /* ** CAPI3REF: Evaluate An SQL Statement +** METHOD: sqlite3_stmt ** ** After a [prepared statement] has been prepared using either ** [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy @@ -3678,7 +4365,8 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); ** other than [SQLITE_ROW] before any subsequent invocation of ** sqlite3_step(). Failure to reset the prepared statement using ** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from -** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began +** sqlite3_step(). But after [version 3.6.23.1] ([dateof:3.6.23.1], +** sqlite3_step() began ** calling [sqlite3_reset()] automatically in this circumstance rather ** than returning [SQLITE_MISUSE]. This is not considered a compatibility ** break because any application that ever receives an SQLITE_MISUSE error @@ -3701,6 +4389,7 @@ SQLITE_API int sqlite3_step(sqlite3_stmt*); /* ** CAPI3REF: Number of columns in a result set +** METHOD: sqlite3_stmt ** ** ^The sqlite3_data_count(P) interface returns the number of columns in the ** current row of the result set of [prepared statement] P. @@ -3754,8 +4443,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Result Values From A Query ** KEYWORDS: {column access functions} -** -** These routines form the "result set" interface. +** METHOD: sqlite3_stmt ** ** ^These routines return information about a single column of the current ** result row of a query. ^In every case the first argument is a pointer @@ -3816,13 +4504,14 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** even empty strings, are always zero-terminated. ^The return ** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer. ** -** ^The object returned by [sqlite3_column_value()] is an -** [unprotected sqlite3_value] object. An unprotected sqlite3_value object -** may only be used with [sqlite3_bind_value()] and [sqlite3_result_value()]. +** Warning: ^The object returned by [sqlite3_column_value()] is an +** [unprotected sqlite3_value] object. In a multithreaded environment, +** an unprotected sqlite3_value object may only be used safely with +** [sqlite3_bind_value()] and [sqlite3_result_value()]. ** If the [unprotected sqlite3_value] object returned by ** [sqlite3_column_value()] is used in any other way, including calls ** to routines like [sqlite3_value_int()], [sqlite3_value_text()], -** or [sqlite3_value_bytes()], then the behavior is undefined. +** or [sqlite3_value_bytes()], the behavior is not threadsafe. ** ** These routines attempt to convert the value where appropriate. ^For ** example, if the internal representation is FLOAT and a text result @@ -3853,12 +4542,6 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** ** )^ ** -** The table above makes reference to standard C library functions atoi() -** and atof(). SQLite does not really use these functions. It has its -** own equivalent internal routines. The atoi() and atof() names are -** used in the table for brevity and because they are familiar to most -** C programmers. -** ** Note that when type conversions occur, pointers returned by prior ** calls to sqlite3_column_blob(), sqlite3_column_text(), and/or ** sqlite3_column_text16() may be invalidated. @@ -3883,7 +4566,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** of conversion are done in place when it is possible, but sometimes they ** are not possible and in those cases prior pointers are invalidated. ** -** The safest and easiest to remember policy is to invoke these routines +** The safest policy is to invoke these routines ** in one of the following ways: ** **
    @@ -3903,7 +4586,7 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); ** ^The pointers returned are valid until a type conversion occurs as ** described above, or until [sqlite3_step()] or [sqlite3_reset()] or ** [sqlite3_finalize()] is called. ^The memory space used to hold strings -** and BLOBs is freed automatically. Do not pass the pointers returned +** and BLOBs is freed automatically. Do not pass the pointers returned ** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into ** [sqlite3_free()]. ** @@ -3926,6 +4609,7 @@ SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol); /* ** CAPI3REF: Destroy A Prepared Statement Object +** DESTRUCTOR: sqlite3_stmt ** ** ^The sqlite3_finalize() function is called to delete a [prepared statement]. ** ^If the most recent evaluation of the statement encountered no errors @@ -3953,6 +4637,7 @@ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt); /* ** CAPI3REF: Reset A Prepared Statement Object +** METHOD: sqlite3_stmt ** ** The sqlite3_reset() function is called to reset a [prepared statement] ** object back to its initial state, ready to be re-executed. @@ -3982,6 +4667,7 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); ** KEYWORDS: {function creation routines} ** KEYWORDS: {application-defined SQL function} ** KEYWORDS: {application-defined SQL functions} +** METHOD: sqlite3 ** ** ^These functions (collectively known as "function creation routines") ** are used to add SQL functions or aggregates or to redefine the behavior @@ -4112,9 +4798,9 @@ SQLITE_API int sqlite3_create_function_v2( ** These constant define integer codes that represent the various ** text encodings supported by SQLite. */ -#define SQLITE_UTF8 1 -#define SQLITE_UTF16LE 2 -#define SQLITE_UTF16BE 3 +#define SQLITE_UTF8 1 /* IMP: R-37514-35566 */ +#define SQLITE_UTF16LE 2 /* IMP: R-03371-37637 */ +#define SQLITE_UTF16BE 3 /* IMP: R-51971-34154 */ #define SQLITE_UTF16 4 /* Use native byte order */ #define SQLITE_ANY 5 /* Deprecated */ #define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */ @@ -4136,8 +4822,8 @@ SQLITE_API int sqlite3_create_function_v2( ** These functions are [deprecated]. In order to maintain ** backwards compatibility with older code, these functions continue ** to be supported. However, new applications should avoid -** the use of these functions. To help encourage people to avoid -** using these functions, we are not going to tell you what they do. +** the use of these functions. To encourage programmers to avoid +** these functions, we will not explain what they do. */ #ifndef SQLITE_OMIT_DEPRECATED SQLITE_API SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*); @@ -4150,11 +4836,12 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 #endif /* -** CAPI3REF: Obtaining SQL Function Parameter Values +** CAPI3REF: Obtaining SQL Values +** METHOD: sqlite3_value ** ** The C-language implementation of SQL functions and aggregates uses ** this set of interface routines to access the parameter values on -** the function or aggregate. +** the function or aggregate. ** ** The xFunc (for scalar functions) or xStep (for aggregates) parameters ** to [sqlite3_create_function()] and [sqlite3_create_function16()] @@ -4169,7 +4856,7 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6 ** object results in undefined behavior. ** ** ^These routines work just like the corresponding [column access functions] -** except that these routines take a single [protected sqlite3_value] object +** except that these routines take a single [protected sqlite3_value] object ** pointer instead of a [sqlite3_stmt*] pointer and an integer column number. ** ** ^The sqlite3_value_text16() interface extracts a UTF-16 string @@ -4207,8 +4894,42 @@ SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*); SQLITE_API int sqlite3_value_type(sqlite3_value*); SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*); +/* +** CAPI3REF: Finding The Subtype Of SQL Values +** METHOD: sqlite3_value +** +** The sqlite3_value_subtype(V) function returns the subtype for +** an [application-defined SQL function] argument V. The subtype +** information can be used to pass a limited amount of context from +** one SQL function to another. Use the [sqlite3_result_subtype()] +** routine to set the subtype for the return value of an SQL function. +** +** SQLite makes no use of subtype itself. It merely passes the subtype +** from the result of one [application-defined SQL function] into the +** input of another. +*/ +SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value*); + +/* +** CAPI3REF: Copy And Free SQL Values +** METHOD: sqlite3_value +** +** ^The sqlite3_value_dup(V) interface makes a copy of the [sqlite3_value] +** object D and returns a pointer to that copy. ^The [sqlite3_value] returned +** is a [protected sqlite3_value] object even if the input is not. +** ^The sqlite3_value_dup(V) interface returns NULL if V is NULL or if a +** memory allocation fails. +** +** ^The sqlite3_value_free(V) interface frees an [sqlite3_value] object +** previously obtained from [sqlite3_value_dup()]. ^If V is a NULL pointer +** then sqlite3_value_free(V) is a harmless no-op. +*/ +SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value*); +SQLITE_API void sqlite3_value_free(sqlite3_value*); + /* ** CAPI3REF: Obtain Aggregate Function Context +** METHOD: sqlite3_context ** ** Implementations of aggregate SQL functions use this ** routine to allocate memory for storing their state. @@ -4253,6 +4974,7 @@ SQLITE_API void *sqlite3_aggregate_context(sqlite3_context*, int nBytes); /* ** CAPI3REF: User Data For Functions +** METHOD: sqlite3_context ** ** ^The sqlite3_user_data() interface returns a copy of ** the pointer that was the pUserData parameter (the 5th parameter) @@ -4267,6 +4989,7 @@ SQLITE_API void *sqlite3_user_data(sqlite3_context*); /* ** CAPI3REF: Database Connection For Functions +** METHOD: sqlite3_context ** ** ^The sqlite3_context_db_handle() interface returns a copy of ** the pointer to the [database connection] (the 1st parameter) @@ -4278,6 +5001,7 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); /* ** CAPI3REF: Function Auxiliary Data +** METHOD: sqlite3_context ** ** These functions may be used by (non-aggregate) SQL functions to ** associate metadata with argument values. If the same value is passed to @@ -4305,12 +5029,13 @@ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); ** SQLite will invoke the destructor function X with parameter P exactly ** once, when the metadata is discarded. ** SQLite is free to discard the metadata at any time, including:
      -**
    • when the corresponding function parameter changes, or -**
    • when [sqlite3_reset()] or [sqlite3_finalize()] is called for the -** SQL statement, or -**
    • when sqlite3_set_auxdata() is invoked again on the same parameter, or -**
    • during the original sqlite3_set_auxdata() call when a memory -** allocation error occurs.
    )^ +**
  • ^(when the corresponding function parameter changes)^, or +**
  • ^(when [sqlite3_reset()] or [sqlite3_finalize()] is called for the +** SQL statement)^, or +**
  • ^(when sqlite3_set_auxdata() is invoked again on the same +** parameter)^, or +**
  • ^(during the original sqlite3_set_auxdata() call when a memory +** allocation error occurs.)^
** ** Note the last bullet in particular. The destructor X in ** sqlite3_set_auxdata(C,N,P,X) might be called immediately, before the @@ -4350,6 +5075,7 @@ typedef void (*sqlite3_destructor_type)(void*); /* ** CAPI3REF: Setting The Result Of An SQL Function +** METHOD: sqlite3_context ** ** These routines are used by the xFunc or xFinal callbacks that ** implement SQL functions and aggregates. See @@ -4365,9 +5091,9 @@ typedef void (*sqlite3_destructor_type)(void*); ** to by the second parameter and which is N bytes long where N is the ** third parameter. ** -** ^The sqlite3_result_zeroblob() interfaces set the result of -** the application-defined function to be a BLOB containing all zero -** bytes and N bytes in size, where N is the value of the 2nd parameter. +** ^The sqlite3_result_zeroblob(C,N) and sqlite3_result_zeroblob64(C,N) +** interfaces set the result of the application-defined function to be +** a BLOB containing all zero bytes and N bytes in size. ** ** ^The sqlite3_result_double() interface sets the result from ** an application-defined function to be a floating point value specified @@ -4416,6 +5142,10 @@ typedef void (*sqlite3_destructor_type)(void*); ** set the return value of the application-defined function to be ** a text string which is represented as UTF-8, UTF-16 native byte order, ** UTF-16 little endian, or UTF-16 big endian, respectively. +** ^The sqlite3_result_text64() interface sets the return value of an +** application-defined function to be a text string in an encoding +** specified by the fifth (and last) parameter, which must be one +** of [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE]. ** ^SQLite takes the text result from the application from ** the 2nd parameter of the sqlite3_result_text* interfaces. ** ^If the 3rd parameter to the sqlite3_result_text* interfaces @@ -4445,7 +5175,7 @@ typedef void (*sqlite3_destructor_type)(void*); ** from [sqlite3_malloc()] before it returns. ** ** ^The sqlite3_result_value() interface sets the result of -** the application-defined function to be a copy the +** the application-defined function to be a copy of the ** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The ** sqlite3_result_value() interface makes a copy of the [sqlite3_value] ** so that the [sqlite3_value] specified in the parameter may change or @@ -4459,6 +5189,8 @@ typedef void (*sqlite3_destructor_type)(void*); ** the [sqlite3_context] pointer, the results are undefined. */ SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*)); +SQLITE_API void sqlite3_result_blob64(sqlite3_context*,const void*, + sqlite3_uint64,void(*)(void*)); SQLITE_API void sqlite3_result_double(sqlite3_context*, double); SQLITE_API void sqlite3_result_error(sqlite3_context*, const char*, int); SQLITE_API void sqlite3_result_error16(sqlite3_context*, const void*, int); @@ -4469,14 +5201,33 @@ SQLITE_API void sqlite3_result_int(sqlite3_context*, int); SQLITE_API void sqlite3_result_int64(sqlite3_context*, sqlite3_int64); SQLITE_API void sqlite3_result_null(sqlite3_context*); SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*)); +SQLITE_API void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64, + void(*)(void*), unsigned char encoding); SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*)); SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*)); SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*)); SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*); SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n); +SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n); + + +/* +** CAPI3REF: Setting The Subtype Of An SQL Function +** METHOD: sqlite3_context +** +** The sqlite3_result_subtype(C,T) function causes the subtype of +** the result from the [application-defined SQL function] with +** [sqlite3_context] C to be the value T. Only the lower 8 bits +** of the subtype T are preserved in current versions of SQLite; +** higher order bits are discarded. +** The number of subtype bytes preserved by SQLite might increase +** in future releases of SQLite. +*/ +SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int); /* ** CAPI3REF: Define New Collating Sequences +** METHOD: sqlite3 ** ** ^These functions add, remove, or modify a [collation] associated ** with the [database connection] specified as the first argument. @@ -4579,6 +5330,7 @@ SQLITE_API int sqlite3_create_collation16( /* ** CAPI3REF: Collation Needed Callbacks +** METHOD: sqlite3 ** ** ^To avoid having to register all collation sequences before a database ** can be used, a single callback function may be registered with the @@ -4698,6 +5450,13 @@ SQLITE_API int sqlite3_sleep(int); ** is a NULL pointer, then SQLite performs a search for an appropriate ** temporary file directory. ** +** Applications are strongly discouraged from using this global variable. +** It is required to set a temporary folder on Windows Runtime (WinRT). +** But for all other platforms, it is highly recommended that applications +** neither read nor write this variable. This global variable is a relic +** that exists for backwards compatibility of legacy applications and should +** be avoided in new projects. +** ** It is not safe to read or modify this variable in more than one ** thread at a time. It is not safe to read or modify this variable ** if a [database connection] is being used at the same time in a separate @@ -4716,6 +5475,11 @@ SQLITE_API int sqlite3_sleep(int); ** Hence, if this variable is modified directly, either it should be ** made NULL or made to point to memory obtained from [sqlite3_malloc] ** or else the use of the [temp_store_directory pragma] should be avoided. +** Except when requested by the [temp_store_directory pragma], SQLite +** does not free the memory that sqlite3_temp_directory points to. If +** the application wants that memory to be freed, it must do +** so itself, taking care to only do so after all [database connection] +** objects have been destroyed. ** ** Note to Windows Runtime users: The temporary directory must be set ** prior to calling [sqlite3_open] or [sqlite3_open_v2]. Otherwise, various @@ -4774,6 +5538,7 @@ SQLITE_API char *sqlite3_data_directory; /* ** CAPI3REF: Test For Auto-Commit Mode ** KEYWORDS: {autocommit mode} +** METHOD: sqlite3 ** ** ^The sqlite3_get_autocommit() interface returns non-zero or ** zero if the given database connection is or is not in autocommit mode, @@ -4796,6 +5561,7 @@ SQLITE_API int sqlite3_get_autocommit(sqlite3*); /* ** CAPI3REF: Find The Database Handle Of A Prepared Statement +** METHOD: sqlite3_stmt ** ** ^The sqlite3_db_handle interface returns the [database connection] handle ** to which a [prepared statement] belongs. ^The [database connection] @@ -4808,6 +5574,7 @@ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*); /* ** CAPI3REF: Return The Filename For A Database Connection +** METHOD: sqlite3 ** ** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename ** associated with database N of connection D. ^The main database file @@ -4824,6 +5591,7 @@ SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName); /* ** CAPI3REF: Determine if a database is read-only +** METHOD: sqlite3 ** ** ^The sqlite3_db_readonly(D,N) interface returns 1 if the database N ** of connection D is read-only, 0 if it is read/write, or -1 if N is not @@ -4833,6 +5601,7 @@ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName); /* ** CAPI3REF: Find the next prepared statement +** METHOD: sqlite3 ** ** ^This interface returns a pointer to the next [prepared statement] after ** pStmt associated with the [database connection] pDb. ^If pStmt is NULL @@ -4848,6 +5617,7 @@ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); /* ** CAPI3REF: Commit And Rollback Notification Callbacks +** METHOD: sqlite3 ** ** ^The sqlite3_commit_hook() interface registers a callback ** function to be invoked whenever a transaction is [COMMIT | committed]. @@ -4897,11 +5667,12 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); /* ** CAPI3REF: Data Change Notification Callbacks +** METHOD: sqlite3 ** ** ^The sqlite3_update_hook() interface registers a callback function ** with the [database connection] identified by the first argument ** to be invoked whenever a row is updated, inserted or deleted in -** a rowid table. +** a [rowid table]. ** ^Any callback set by a previous call to this function ** for the same database connection is overridden. ** @@ -4922,7 +5693,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified. ** ** ^In the current implementation, the update hook -** is not invoked when duplication rows are deleted because of an +** is not invoked when conflicting rows are deleted because of an ** [ON CONFLICT | ON CONFLICT REPLACE] clause. ^Nor is the update hook ** invoked when rows are deleted using the [truncate optimization]. ** The exceptions defined in this paragraph might change in a future @@ -4940,8 +5711,8 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); ** on the same [database connection] D, or NULL for ** the first call on D. ** -** See also the [sqlite3_commit_hook()] and [sqlite3_rollback_hook()] -** interfaces. +** See also the [sqlite3_commit_hook()], [sqlite3_rollback_hook()], +** and [sqlite3_preupdate_hook()] interfaces. */ SQLITE_API void *sqlite3_update_hook( sqlite3*, @@ -4958,7 +5729,8 @@ SQLITE_API void *sqlite3_update_hook( ** and disabled if the argument is false.)^ ** ** ^Cache sharing is enabled and disabled for an entire process. -** This is a change as of SQLite version 3.5.0. In prior versions of SQLite, +** This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]). +** In prior versions of SQLite, ** sharing was enabled or disabled for each thread separately. ** ** ^(The cache sharing mode set by this interface effects all subsequent @@ -4973,6 +5745,11 @@ SQLITE_API void *sqlite3_update_hook( ** future releases of SQLite. Applications that care about shared ** cache setting should set it explicitly. ** +** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0 +** and will always return SQLITE_MISUSE. On those systems, +** shared cache mode should be enabled per-database connection via +** [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE]. +** ** This interface is threadsafe on processors where writing a ** 32-bit integer is atomic. ** @@ -4998,6 +5775,7 @@ SQLITE_API int sqlite3_release_memory(int); /* ** CAPI3REF: Free Memory Used By A Database Connection +** METHOD: sqlite3 ** ** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap ** memory as possible from database connection D. Unlike the @@ -5046,7 +5824,8 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*); ** from the heap. ** )^ ** -** Beginning with SQLite version 3.7.3, the soft heap limit is enforced +** Beginning with SQLite [version 3.7.3] ([dateof:3.7.3]), +** the soft heap limit is enforced ** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT] ** compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT], ** the soft heap limit is enforced on every memory allocation. Without @@ -5075,21 +5854,29 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); /* ** CAPI3REF: Extract Metadata About A Column Of A Table +** METHOD: sqlite3 ** -** ^This routine returns metadata about a specific column of a specific -** database table accessible using the [database connection] handle -** passed as the first function argument. +** ^(The sqlite3_table_column_metadata(X,D,T,C,....) routine returns +** information about column C of table T in database D +** on [database connection] X.)^ ^The sqlite3_table_column_metadata() +** interface returns SQLITE_OK and fills in the non-NULL pointers in +** the final five arguments with appropriate values if the specified +** column exists. ^The sqlite3_table_column_metadata() interface returns +** SQLITE_ERROR and if the specified column does not exist. +** ^If the column-name parameter to sqlite3_table_column_metadata() is a +** NULL pointer, then this routine simply checks for the existence of the +** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it +** does not. ** ** ^The column is identified by the second, third and fourth parameters to -** this function. ^The second parameter is either the name of the database +** this function. ^(The second parameter is either the name of the database ** (i.e. "main", "temp", or an attached database) containing the specified -** table or NULL. ^If it is NULL, then all attached databases are searched +** table or NULL.)^ ^If it is NULL, then all attached databases are searched ** for the table using the same algorithm used by the database engine to ** resolve unqualified table references. ** ** ^The third and fourth parameters to this function are the table and column -** name of the desired column, respectively. Neither of these parameters -** may be NULL. +** name of the desired column, respectively. ** ** ^Metadata is returned by writing to the memory locations passed as the 5th ** and subsequent parameters to this function. ^Any of these arguments may be @@ -5108,16 +5895,17 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); ** )^ ** ** ^The memory pointed to by the character pointers returned for the -** declaration type and collation sequence is valid only until the next +** declaration type and collation sequence is valid until the next ** call to any SQLite API function. ** ** ^If the specified table is actually a view, an [error code] is returned. ** -** ^If the specified column is "rowid", "oid" or "_rowid_" and an +** ^If the specified column is "rowid", "oid" or "_rowid_" and the table +** is not a [WITHOUT ROWID] table and an ** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output ** parameters are set for the explicitly declared column. ^(If there is no -** explicitly declared [INTEGER PRIMARY KEY] column, then the output -** parameters are set as follows: +** [INTEGER PRIMARY KEY] column, then the outputs +** for the [rowid] are set as follows: ** ** 
 **     data type: "INTEGER"
@@ -5127,13 +5915,9 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N);
 **     auto increment: 0
 **
)^ ** -** ^(This function may load one or more schemas from database files. If an -** error occurs during this process, or if the requested table or column -** cannot be found, an [error code] is returned and an error message left -** in the [database connection] (to be retrieved using sqlite3_errmsg()).)^ -** -** ^This API is only available if the library was compiled with the -** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol defined. +** ^This function causes all database schemas to be read from disk and +** parsed, if that has not already been done, and returns an error if +** any errors are encountered while loading the schema. */ SQLITE_API int sqlite3_table_column_metadata( sqlite3 *db, /* Connection handle */ @@ -5149,6 +5933,7 @@ SQLITE_API int sqlite3_table_column_metadata( /* ** CAPI3REF: Load An Extension +** METHOD: sqlite3 ** ** ^This interface loads an SQLite extension library from the named file. ** @@ -5176,9 +5961,18 @@ SQLITE_API int sqlite3_table_column_metadata( ** should free this memory by calling [sqlite3_free()]. ** ** ^Extension loading must be enabled using -** [sqlite3_enable_load_extension()] prior to calling this API, +** [sqlite3_enable_load_extension()] or +** [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],1,NULL) +** prior to calling this API, ** otherwise an error will be returned. ** +** Security warning: It is recommended that the +** [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this +** interface. The use of the [sqlite3_enable_load_extension()] interface +** should be avoided. This will keep the SQL function [load_extension()] +** disabled and prevent SQL injections from giving attackers +** access to extension loading capabilities. +** ** See also the [load_extension() SQL function]. */ SQLITE_API int sqlite3_load_extension( @@ -5190,6 +5984,7 @@ SQLITE_API int sqlite3_load_extension( /* ** CAPI3REF: Enable Or Disable Extension Loading +** METHOD: sqlite3 ** ** ^So as not to open security holes in older applications that are ** unprepared to deal with [extension loading], and as a means of disabling @@ -5200,6 +5995,17 @@ SQLITE_API int sqlite3_load_extension( ** ^Call the sqlite3_enable_load_extension() routine with onoff==1 ** to turn extension loading on and call it with onoff==0 to turn ** it back off again. +** +** ^This interface enables or disables both the C-API +** [sqlite3_load_extension()] and the SQL function [load_extension()]. +** ^(Use [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],..) +** to enable or disable only the C-API.)^ +** +** Security warning: It is recommended that extension loading +** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method +** rather than this interface, so the [load_extension()] SQL function +** remains disabled. This will prevent SQL injections from giving attackers +** access to extension loading capabilities. */ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff); @@ -5213,7 +6019,7 @@ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff); ** ** ^(Even though the function prototype shows that xEntryPoint() takes ** no arguments and returns void, SQLite invokes xEntryPoint() with three -** arguments and expects and integer result as if the signature of the +** arguments and expects an integer result as if the signature of the ** entry point where as follows: ** ** 
@@ -5239,7 +6045,7 @@ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff);
 ** See also: [sqlite3_reset_auto_extension()]
 ** and [sqlite3_cancel_auto_extension()]
 */
-SQLITE_API int sqlite3_auto_extension(void (*xEntryPoint)(void));
+SQLITE_API int sqlite3_auto_extension(void(*xEntryPoint)(void));
 
 /*
 ** CAPI3REF: Cancel Automatic Extension Loading
@@ -5251,7 +6057,7 @@ SQLITE_API int sqlite3_auto_extension(void (*xEntryPoint)(void));
 ** unregistered and it returns 0 if X was not on the list of initialization
 ** routines.
 */
-SQLITE_API int sqlite3_cancel_auto_extension(void (*xEntryPoint)(void));
+SQLITE_API int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void));
 
 /*
 ** CAPI3REF: Reset Automatic Extension Loading
@@ -5361,6 +6167,17 @@ struct sqlite3_module {
 ** ^Information about the ORDER BY clause is stored in aOrderBy[].
 ** ^Each term of aOrderBy records a column of the ORDER BY clause.
 **
+** The colUsed field indicates which columns of the virtual table may be
+** required by the current scan. Virtual table columns are numbered from
+** zero in the order in which they appear within the CREATE TABLE statement
+** passed to sqlite3_declare_vtab(). For the first 63 columns (columns 0-62),
+** the corresponding bit is set within the colUsed mask if the column may be
+** required by SQLite. If the table has at least 64 columns and any column
+** to the right of the first 63 is required, then bit 63 of colUsed is also
+** set. In other words, column iCol may be required if the expression
+** (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) evaluates to 
+** non-zero.
+**
 ** The [xBestIndex] method must fill aConstraintUsage[] with information
 ** about what parameters to pass to xFilter.  ^If argvIndex>0 then
 ** the right-hand side of the corresponding aConstraint[] is evaluated
@@ -5386,19 +6203,39 @@ struct sqlite3_module {
 ** ^The estimatedRows value is an estimate of the number of rows that
 ** will be returned by the strategy.
 **
+** The xBestIndex method may optionally populate the idxFlags field with a 
+** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag -
+** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite
+** assumes that the strategy may visit at most one row. 
+**
+** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then
+** SQLite also assumes that if a call to the xUpdate() method is made as
+** part of the same statement to delete or update a virtual table row and the
+** implementation returns SQLITE_CONSTRAINT, then there is no need to rollback
+** any database changes. In other words, if the xUpdate() returns
+** SQLITE_CONSTRAINT, the database contents must be exactly as they were
+** before xUpdate was called. By contrast, if SQLITE_INDEX_SCAN_UNIQUE is not
+** set and xUpdate returns SQLITE_CONSTRAINT, any database changes made by
+** the xUpdate method are automatically rolled back by SQLite.
+**
 ** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info
-** structure for SQLite version 3.8.2. If a virtual table extension is
+** structure for SQLite [version 3.8.2] ([dateof:3.8.2]). 
+** If a virtual table extension is
 ** used with an SQLite version earlier than 3.8.2, the results of attempting 
 ** to read or write the estimatedRows field are undefined (but are likely 
 ** to included crashing the application). The estimatedRows field should
 ** therefore only be used if [sqlite3_libversion_number()] returns a
-** value greater than or equal to 3008002.
+** value greater than or equal to 3008002. Similarly, the idxFlags field
+** was added for [version 3.9.0] ([dateof:3.9.0]). 
+** It may therefore only be used if
+** sqlite3_libversion_number() returns a value greater than or equal to
+** 3009000.
 */
 struct sqlite3_index_info {
   /* Inputs */
   int nConstraint;           /* Number of entries in aConstraint */
   struct sqlite3_index_constraint {
-     int iColumn;              /* Column on left-hand side of constraint */
+     int iColumn;              /* Column constrained.  -1 for ROWID */
      unsigned char op;         /* Constraint operator */
      unsigned char usable;     /* True if this constraint is usable */
      int iTermOffset;          /* Used internally - xBestIndex should ignore */
@@ -5420,8 +6257,17 @@ struct sqlite3_index_info {
   double estimatedCost;           /* Estimated cost of using this index */
   /* Fields below are only available in SQLite 3.8.2 and later */
   sqlite3_int64 estimatedRows;    /* Estimated number of rows returned */
+  /* Fields below are only available in SQLite 3.9.0 and later */
+  int idxFlags;              /* Mask of SQLITE_INDEX_SCAN_* flags */
+  /* Fields below are only available in SQLite 3.10.0 and later */
+  sqlite3_uint64 colUsed;    /* Input: Mask of columns used by statement */
 };
 
+/*
+** CAPI3REF: Virtual Table Scan Flags
+*/
+#define SQLITE_INDEX_SCAN_UNIQUE      1     /* Scan visits at most 1 row */
+
 /*
 ** CAPI3REF: Virtual Table Constraint Operator Codes
 **
@@ -5430,15 +6276,19 @@ struct sqlite3_index_info {
 ** an operator that is part of a constraint term in the wHERE clause of
 ** a query that uses a [virtual table].
 */
-#define SQLITE_INDEX_CONSTRAINT_EQ    2
-#define SQLITE_INDEX_CONSTRAINT_GT    4
-#define SQLITE_INDEX_CONSTRAINT_LE    8
-#define SQLITE_INDEX_CONSTRAINT_LT    16
-#define SQLITE_INDEX_CONSTRAINT_GE    32
-#define SQLITE_INDEX_CONSTRAINT_MATCH 64
+#define SQLITE_INDEX_CONSTRAINT_EQ      2
+#define SQLITE_INDEX_CONSTRAINT_GT      4
+#define SQLITE_INDEX_CONSTRAINT_LE      8
+#define SQLITE_INDEX_CONSTRAINT_LT     16
+#define SQLITE_INDEX_CONSTRAINT_GE     32
+#define SQLITE_INDEX_CONSTRAINT_MATCH  64
+#define SQLITE_INDEX_CONSTRAINT_LIKE   65
+#define SQLITE_INDEX_CONSTRAINT_GLOB   66
+#define SQLITE_INDEX_CONSTRAINT_REGEXP 67
 
 /*
 ** CAPI3REF: Register A Virtual Table Implementation
+** METHOD: sqlite3
 **
 ** ^These routines are used to register a new [virtual table module] name.
 ** ^Module names must be registered before
@@ -5496,7 +6346,7 @@ SQLITE_API int sqlite3_create_module_v2(
 */
 struct sqlite3_vtab {
   const sqlite3_module *pModule;  /* The module for this virtual table */
-  int nRef;                       /* NO LONGER USED */
+  int nRef;                       /* Number of open cursors */
   char *zErrMsg;                  /* Error message from sqlite3_mprintf() */
   /* Virtual table implementations will typically add additional fields */
 };
@@ -5535,6 +6385,7 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL);
 
 /*
 ** CAPI3REF: Overload A Function For A Virtual Table
+** METHOD: sqlite3
 **
 ** ^(Virtual tables can provide alternative implementations of functions
 ** using the [xFindFunction] method of the [virtual table module].  
@@ -5577,6 +6428,8 @@ typedef struct sqlite3_blob sqlite3_blob;
 
 /*
 ** CAPI3REF: Open A BLOB For Incremental I/O
+** METHOD: sqlite3
+** CONSTRUCTOR: sqlite3_blob
 **
 ** ^(This interfaces opens a [BLOB handle | handle] to the BLOB located
 ** in row iRow, column zColumn, table zTable in database zDb;
@@ -5586,26 +6439,48 @@ typedef struct sqlite3_blob sqlite3_blob;
 **     SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
 **
)^ ** +** ^(Parameter zDb is not the filename that contains the database, but +** rather the symbolic name of the database. For attached databases, this is +** the name that appears after the AS keyword in the [ATTACH] statement. +** For the main database file, the database name is "main". For TEMP +** tables, the database name is "temp".)^ +** ** ^If the flags parameter is non-zero, then the BLOB is opened for read -** and write access. ^If it is zero, the BLOB is opened for read access. -** ^It is not possible to open a column that is part of an index or primary -** key for writing. ^If [foreign key constraints] are enabled, it is -** not possible to open a column that is part of a [child key] for writing. +** and write access. ^If the flags parameter is zero, the BLOB is opened for +** read-only access. ** -** ^Note that the database name is not the filename that contains -** the database but rather the symbolic name of the database that -** appears after the AS keyword when the database is connected using [ATTACH]. -** ^For the main database file, the database name is "main". -** ^For TEMP tables, the database name is "temp". +** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored +** in *ppBlob. Otherwise an [error code] is returned and, unless the error +** code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided +** the API is not misused, it is always safe to call [sqlite3_blob_close()] +** on *ppBlob after this function it returns. ** -** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is written -** to *ppBlob. Otherwise an [error code] is returned and *ppBlob is set -** to be a null pointer.)^ -** ^This function sets the [database connection] error code and message -** accessible via [sqlite3_errcode()] and [sqlite3_errmsg()] and related -** functions. ^Note that the *ppBlob variable is always initialized in a -** way that makes it safe to invoke [sqlite3_blob_close()] on *ppBlob -** regardless of the success or failure of this routine. +** This function fails with SQLITE_ERROR if any of the following are true: +**
    +**
  • ^(Database zDb does not exist)^, +**
  • ^(Table zTable does not exist within database zDb)^, +**
  • ^(Table zTable is a WITHOUT ROWID table)^, +**
  • ^(Column zColumn does not exist)^, +**
  • ^(Row iRow is not present in the table)^, +**
  • ^(The specified column of row iRow contains a value that is not +** a TEXT or BLOB value)^, +**
  • ^(Column zColumn is part of an index, PRIMARY KEY or UNIQUE +** constraint and the blob is being opened for read/write access)^, +**
  • ^([foreign key constraints | Foreign key constraints] are enabled, +** column zColumn is part of a [child key] definition and the blob is +** being opened for read/write access)^. +**
+** +** ^Unless it returns SQLITE_MISUSE, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. +** +** A BLOB referenced by sqlite3_blob_open() may be read using the +** [sqlite3_blob_read()] interface and modified by using +** [sqlite3_blob_write()]. The [BLOB handle] can be moved to a +** different row of the same table using the [sqlite3_blob_reopen()] +** interface. However, the column, table, or database of a [BLOB handle] +** cannot be changed after the [BLOB handle] is opened. ** ** ^(If the row that a BLOB handle points to is modified by an ** [UPDATE], [DELETE], or by [ON CONFLICT] side-effects @@ -5623,16 +6498,16 @@ typedef struct sqlite3_blob sqlite3_blob; ** interface. Use the [UPDATE] SQL command to change the size of a ** blob. ** -** ^The [sqlite3_blob_open()] interface will fail for a [WITHOUT ROWID] -** table. Incremental BLOB I/O is not possible on [WITHOUT ROWID] tables. -** ** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces -** and the built-in [zeroblob] SQL function can be used, if desired, -** to create an empty, zero-filled blob in which to read or write using -** this interface. +** and the built-in [zeroblob] SQL function may be used to create a +** zero-filled blob to read or write using the incremental-blob interface. ** ** To avoid a resource leak, every open [BLOB handle] should eventually ** be released by a call to [sqlite3_blob_close()]. +** +** See also: [sqlite3_blob_close()], +** [sqlite3_blob_reopen()], [sqlite3_blob_read()], +** [sqlite3_blob_bytes()], [sqlite3_blob_write()]. */ SQLITE_API int sqlite3_blob_open( sqlite3*, @@ -5646,12 +6521,13 @@ SQLITE_API int sqlite3_blob_open( /* ** CAPI3REF: Move a BLOB Handle to a New Row +** METHOD: sqlite3_blob ** -** ^This function is used to move an existing blob handle so that it points +** ^This function is used to move an existing [BLOB handle] so that it points ** to a different row of the same database table. ^The new row is identified ** by the rowid value passed as the second argument. Only the row can be ** changed. ^The database, table and column on which the blob handle is open -** remain the same. Moving an existing blob handle to a new row can be +** remain the same. Moving an existing [BLOB handle] to a new row is ** faster than closing the existing handle and opening a new one. ** ** ^(The new row must meet the same criteria as for [sqlite3_blob_open()] - @@ -5666,34 +6542,34 @@ SQLITE_API int sqlite3_blob_open( ** ** ^This function sets the database handle error code and message. */ -SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); +SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); /* ** CAPI3REF: Close A BLOB Handle +** DESTRUCTOR: sqlite3_blob ** -** ^Closes an open [BLOB handle]. +** ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed +** unconditionally. Even if this routine returns an error code, the +** handle is still closed.)^ ** -** ^Closing a BLOB shall cause the current transaction to commit -** if there are no other BLOBs, no pending prepared statements, and the -** database connection is in [autocommit mode]. -** ^If any writes were made to the BLOB, they might be held in cache -** until the close operation if they will fit. +** ^If the blob handle being closed was opened for read-write access, and if +** the database is in auto-commit mode and there are no other open read-write +** blob handles or active write statements, the current transaction is +** committed. ^If an error occurs while committing the transaction, an error +** code is returned and the transaction rolled back. ** -** ^(Closing the BLOB often forces the changes -** out to disk and so if any I/O errors occur, they will likely occur -** at the time when the BLOB is closed. Any errors that occur during -** closing are reported as a non-zero return value.)^ -** -** ^(The BLOB is closed unconditionally. Even if this routine returns -** an error code, the BLOB is still closed.)^ -** -** ^Calling this routine with a null pointer (such as would be returned -** by a failed call to [sqlite3_blob_open()]) is a harmless no-op. +** Calling this function with an argument that is not a NULL pointer or an +** open blob handle results in undefined behaviour. ^Calling this routine +** with a null pointer (such as would be returned by a failed call to +** [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function +** is passed a valid open blob handle, the values returned by the +** sqlite3_errcode() and sqlite3_errmsg() functions are set before returning. */ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); /* ** CAPI3REF: Return The Size Of An Open BLOB +** METHOD: sqlite3_blob ** ** ^Returns the size in bytes of the BLOB accessible via the ** successfully opened [BLOB handle] in its only argument. ^The @@ -5709,6 +6585,7 @@ SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *); /* ** CAPI3REF: Read Data From A BLOB Incrementally +** METHOD: sqlite3_blob ** ** ^(This function is used to read data from an open [BLOB handle] into a ** caller-supplied buffer. N bytes of data are copied into buffer Z @@ -5737,22 +6614,29 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); /* ** CAPI3REF: Write Data Into A BLOB Incrementally +** METHOD: sqlite3_blob ** -** ^This function is used to write data into an open [BLOB handle] from a -** caller-supplied buffer. ^N bytes of data are copied from the buffer Z -** into the open BLOB, starting at offset iOffset. +** ^(This function is used to write data into an open [BLOB handle] from a +** caller-supplied buffer. N bytes of data are copied from the buffer Z +** into the open BLOB, starting at offset iOffset.)^ +** +** ^(On success, sqlite3_blob_write() returns SQLITE_OK. +** Otherwise, an [error code] or an [extended error code] is returned.)^ +** ^Unless SQLITE_MISUSE is returned, this function sets the +** [database connection] error code and message accessible via +** [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions. ** ** ^If the [BLOB handle] passed as the first argument was not opened for ** writing (the flags parameter to [sqlite3_blob_open()] was zero), ** this function returns [SQLITE_READONLY]. ** -** ^This function may only modify the contents of the BLOB; it is +** This function may only modify the contents of the BLOB; it is ** not possible to increase the size of a BLOB using this API. ** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is written. ^If N is -** less than zero [SQLITE_ERROR] is returned and no data is written. -** The size of the BLOB (and hence the maximum value of N+iOffset) -** can be determined using the [sqlite3_blob_bytes()] interface. +** [SQLITE_ERROR] is returned and no data is written. The size of the +** BLOB (and hence the maximum value of N+iOffset) can be determined +** using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less +** than zero [SQLITE_ERROR] is returned and no data is written. ** ** ^An attempt to write to an expired [BLOB handle] fails with an ** error code of [SQLITE_ABORT]. ^Writes to the BLOB that occurred @@ -5761,9 +6645,6 @@ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); ** have been overwritten by the statement that expired the BLOB handle ** or by other independent statements. ** -** ^(On success, sqlite3_blob_write() returns SQLITE_OK. -** Otherwise, an [error code] or an [extended error code] is returned.)^ -** ** This routine only works on a [BLOB handle] which has been created ** by a prior successful call to [sqlite3_blob_open()] and which has not ** been closed by [sqlite3_blob_close()]. Passing any other pointer in @@ -5816,45 +6697,51 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); ** ** The SQLite source code contains multiple implementations ** of these mutex routines. An appropriate implementation -** is selected automatically at compile-time. ^(The following +** is selected automatically at compile-time. The following ** implementations are available in the SQLite core: ** **
    **
  • SQLITE_MUTEX_PTHREADS **
  • SQLITE_MUTEX_W32 **
  • SQLITE_MUTEX_NOOP -**
)^ +** ** -** ^The SQLITE_MUTEX_NOOP implementation is a set of routines +** The SQLITE_MUTEX_NOOP implementation is a set of routines ** that does no real locking and is appropriate for use in -** a single-threaded application. ^The SQLITE_MUTEX_PTHREADS and +** a single-threaded application. The SQLITE_MUTEX_PTHREADS and ** SQLITE_MUTEX_W32 implementations are appropriate for use on Unix ** and Windows. ** -** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor +** If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor ** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex ** implementation is included with the library. In this case the ** application must supply a custom mutex implementation using the ** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function ** before calling sqlite3_initialize() or any other public sqlite3_ -** function that calls sqlite3_initialize().)^ +** function that calls sqlite3_initialize(). ** ** ^The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. ^If it returns NULL -** that means that a mutex could not be allocated. ^SQLite -** will unwind its stack and return an error. ^(The argument -** to sqlite3_mutex_alloc() is one of these integer constants: +** mutex and returns a pointer to it. ^The sqlite3_mutex_alloc() +** routine returns NULL if it is unable to allocate the requested +** mutex. The argument to sqlite3_mutex_alloc() must one of these +** integer constants: ** **
    **
  • SQLITE_MUTEX_FAST **
  • SQLITE_MUTEX_RECURSIVE **
  • SQLITE_MUTEX_STATIC_MASTER **
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 +**
  • SQLITE_MUTEX_STATIC_OPEN **
  • SQLITE_MUTEX_STATIC_PRNG **
  • SQLITE_MUTEX_STATIC_LRU -**
  • SQLITE_MUTEX_STATIC_LRU2 -**
)^ +**
  • SQLITE_MUTEX_STATIC_PMEM +**
  • SQLITE_MUTEX_STATIC_APP1 +**
  • SQLITE_MUTEX_STATIC_APP2 +**
  • SQLITE_MUTEX_STATIC_APP3 +**
  • SQLITE_MUTEX_STATIC_VFS1 +**
  • SQLITE_MUTEX_STATIC_VFS2 +**
  • SQLITE_MUTEX_STATIC_VFS3 +** ** ** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) ** cause sqlite3_mutex_alloc() to create @@ -5862,14 +6749,14 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); ** is used but not necessarily so when SQLITE_MUTEX_FAST is used. ** The mutex implementation does not need to make a distinction ** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. ^SQLite will only request a recursive mutex in -** cases where it really needs one. ^If a faster non-recursive mutex +** not want to. SQLite will only request a recursive mutex in +** cases where it really needs one. If a faster non-recursive mutex ** implementation is available on the host platform, the mutex subsystem ** might return such a mutex in response to SQLITE_MUTEX_FAST. ** ** ^The other allowed parameters to sqlite3_mutex_alloc() (anything other ** than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return -** a pointer to a static preexisting mutex. ^Six static mutexes are +** a pointer to a static preexisting mutex. ^Nine static mutexes are ** used by the current version of SQLite. Future versions of SQLite ** may add additional static mutexes. Static mutexes are for internal ** use by SQLite only. Applications that use SQLite mutexes should @@ -5878,16 +6765,13 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); ** ** ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. ^But for the static +** returns a different mutex on every call. ^For the static ** mutex types, the same mutex is returned on every call that has ** the same type number. ** ** ^The sqlite3_mutex_free() routine deallocates a previously -** allocated dynamic mutex. ^SQLite is careful to deallocate every -** dynamic mutex that it allocates. The dynamic mutexes must not be in -** use when they are deallocated. Attempting to deallocate a static -** mutex results in undefined behavior. ^SQLite never deallocates -** a static mutex. +** allocated dynamic mutex. Attempting to deallocate a static +** mutex results in undefined behavior. ** ** ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt ** to enter a mutex. ^If another thread is already within the mutex, @@ -5895,23 +6779,21 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); ** SQLITE_BUSY. ^The sqlite3_mutex_try() interface returns [SQLITE_OK] ** upon successful entry. ^(Mutexes created using ** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread. -** In such cases the, +** In such cases, the ** mutex must be exited an equal number of times before another thread -** can enter.)^ ^(If the same thread tries to enter any other -** kind of mutex more than once, the behavior is undefined. -** SQLite will never exhibit -** such behavior in its own use of mutexes.)^ +** can enter.)^ If the same thread tries to enter any mutex other +** than an SQLITE_MUTEX_RECURSIVE more than once, the behavior is undefined. ** ** ^(Some systems (for example, Windows 95) do not support the operation ** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try() -** will always return SQLITE_BUSY. The SQLite core only ever uses -** sqlite3_mutex_try() as an optimization so this is acceptable behavior.)^ +** will always return SQLITE_BUSY. The SQLite core only ever uses +** sqlite3_mutex_try() as an optimization so this is acceptable +** behavior.)^ ** ** ^The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. ^(The behavior +** previously entered by the same thread. The behavior ** is undefined if the mutex is not currently entered by the -** calling thread or is not currently allocated. SQLite will -** never do either.)^ +** calling thread or is not currently allocated. ** ** ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or ** sqlite3_mutex_leave() is a NULL pointer, then all three routines @@ -5932,9 +6814,9 @@ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*); ** used to allocate and use mutexes. ** ** Usually, the default mutex implementations provided by SQLite are -** sufficient, however the user has the option of substituting a custom +** sufficient, however the application has the option of substituting a custom ** implementation for specialized deployments or systems for which SQLite -** does not provide a suitable implementation. In this case, the user +** does not provide a suitable implementation. In this case, the application ** creates and populates an instance of this structure to pass ** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option. ** Additionally, an instance of this structure can be used as an @@ -5975,13 +6857,13 @@ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*); ** (i.e. it is acceptable to provide an implementation that segfaults if ** it is passed a NULL pointer). ** -** The xMutexInit() method must be threadsafe. ^It must be harmless to +** The xMutexInit() method must be threadsafe. It must be harmless to ** invoke xMutexInit() multiple times within the same process and without ** intervening calls to xMutexEnd(). Second and subsequent calls to ** xMutexInit() must be no-ops. ** -** ^xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()] -** and its associates). ^Similarly, xMutexAlloc() must not use SQLite memory +** xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()] +** and its associates). Similarly, xMutexAlloc() must not use SQLite memory ** allocation for a static mutex. ^However xMutexAlloc() may use SQLite ** memory allocation for a fast or recursive mutex. ** @@ -6007,29 +6889,29 @@ struct sqlite3_mutex_methods { ** CAPI3REF: Mutex Verification Routines ** ** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines -** are intended for use inside assert() statements. ^The SQLite core +** are intended for use inside assert() statements. The SQLite core ** never uses these routines except inside an assert() and applications -** are advised to follow the lead of the core. ^The SQLite core only +** are advised to follow the lead of the core. The SQLite core only ** provides implementations for these routines when it is compiled -** with the SQLITE_DEBUG flag. ^External mutex implementations +** with the SQLITE_DEBUG flag. External mutex implementations ** are only required to provide these routines if SQLITE_DEBUG is ** defined and if NDEBUG is not defined. ** -** ^These routines should return true if the mutex in their argument +** These routines should return true if the mutex in their argument ** is held or not held, respectively, by the calling thread. ** -** ^The implementation is not required to provide versions of these +** The implementation is not required to provide versions of these ** routines that actually work. If the implementation does not provide working ** versions of these routines, it should at least provide stubs that always ** return true so that one does not get spurious assertion failures. ** -** ^If the argument to sqlite3_mutex_held() is a NULL pointer then +** If the argument to sqlite3_mutex_held() is a NULL pointer then ** the routine should return 1. This seems counter-intuitive since ** clearly the mutex cannot be held if it does not exist. But ** the reason the mutex does not exist is because the build is not ** using mutexes. And we do not want the assert() containing the ** call to sqlite3_mutex_held() to fail, so a non-zero return is -** the appropriate thing to do. ^The sqlite3_mutex_notheld() +** the appropriate thing to do. The sqlite3_mutex_notheld() ** interface should also return 1 when given a NULL pointer. */ #ifndef NDEBUG @@ -6053,13 +6935,20 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*); #define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ #define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */ #define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */ -#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ +#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_randomness() */ #define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ #define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */ #define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */ +#define SQLITE_MUTEX_STATIC_APP1 8 /* For use by application */ +#define SQLITE_MUTEX_STATIC_APP2 9 /* For use by application */ +#define SQLITE_MUTEX_STATIC_APP3 10 /* For use by application */ +#define SQLITE_MUTEX_STATIC_VFS1 11 /* For use by built-in VFS */ +#define SQLITE_MUTEX_STATIC_VFS2 12 /* For use by extension VFS */ +#define SQLITE_MUTEX_STATIC_VFS3 13 /* For use by application VFS */ /* ** CAPI3REF: Retrieve the mutex for a database connection +** METHOD: sqlite3 ** ** ^This interface returns a pointer the [sqlite3_mutex] object that ** serializes access to the [database connection] given in the argument @@ -6071,6 +6960,7 @@ SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3*); /* ** CAPI3REF: Low-Level Control Of Database Files +** METHOD: sqlite3 ** ** ^The [sqlite3_file_control()] interface makes a direct call to the ** xFileControl method for the [sqlite3_io_methods] object associated @@ -6148,14 +7038,20 @@ SQLITE_API int sqlite3_test_control(int op, ...); #define SQLITE_TESTCTRL_ISKEYWORD 16 #define SQLITE_TESTCTRL_SCRATCHMALLOC 17 #define SQLITE_TESTCTRL_LOCALTIME_FAULT 18 -#define SQLITE_TESTCTRL_EXPLAIN_STMT 19 +#define SQLITE_TESTCTRL_EXPLAIN_STMT 19 /* NOT USED */ +#define SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD 19 #define SQLITE_TESTCTRL_NEVER_CORRUPT 20 -#define SQLITE_TESTCTRL_LAST 20 +#define SQLITE_TESTCTRL_VDBE_COVERAGE 21 +#define SQLITE_TESTCTRL_BYTEORDER 22 +#define SQLITE_TESTCTRL_ISINIT 23 +#define SQLITE_TESTCTRL_SORTER_MMAP 24 +#define SQLITE_TESTCTRL_IMPOSTER 25 +#define SQLITE_TESTCTRL_LAST 25 /* ** CAPI3REF: SQLite Runtime Status ** -** ^This interface is used to retrieve runtime status information +** ^These interfaces are used to retrieve runtime status information ** about the performance of SQLite, and optionally to reset various ** highwater marks. ^The first argument is an integer code for ** the specific parameter to measure. ^(Recognized integer codes @@ -6169,19 +7065,22 @@ SQLITE_API int sqlite3_test_control(int op, ...); ** ^(Other parameters record only the highwater mark and not the current ** value. For these latter parameters nothing is written into *pCurrent.)^ ** -** ^The sqlite3_status() routine returns SQLITE_OK on success and a -** non-zero [error code] on failure. +** ^The sqlite3_status() and sqlite3_status64() routines return +** SQLITE_OK on success and a non-zero [error code] on failure. ** -** This routine is threadsafe but is not atomic. This routine can be -** called while other threads are running the same or different SQLite -** interfaces. However the values returned in *pCurrent and -** *pHighwater reflect the status of SQLite at different points in time -** and it is possible that another thread might change the parameter -** in between the times when *pCurrent and *pHighwater are written. +** If either the current value or the highwater mark is too large to +** be represented by a 32-bit integer, then the values returned by +** sqlite3_status() are undefined. ** ** See also: [sqlite3_db_status()] */ SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag); +SQLITE_API int sqlite3_status64( + int op, + sqlite3_int64 *pCurrent, + sqlite3_int64 *pHighwater, + int resetFlag +); /* @@ -6260,7 +7159,8 @@ SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetF ** The value written into the *pCurrent parameter is undefined.)^ ** ** [[SQLITE_STATUS_PARSER_STACK]] ^(
    SQLITE_STATUS_PARSER_STACK
    -**
    This parameter records the deepest parser stack. It is only +**
    The *pHighwater parameter records the deepest parser stack. +** The *pCurrent value is undefined. The *pHighwater value is only ** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].
    )^ ** ** @@ -6279,6 +7179,7 @@ SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetF /* ** CAPI3REF: Database Connection Status +** METHOD: sqlite3 ** ** ^This interface is used to retrieve runtime status information ** about a single [database connection]. ^The first argument is the @@ -6341,12 +7242,24 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** the current value is always zero.)^ ** ** [[SQLITE_DBSTATUS_CACHE_USED]] ^(
    SQLITE_DBSTATUS_CACHE_USED
    -**
    This parameter returns the approximate number of of bytes of heap +**
    This parameter returns the approximate number of bytes of heap ** memory used by all pager caches associated with the database connection.)^ ** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0. ** +** [[SQLITE_DBSTATUS_CACHE_USED_SHARED]] +** ^(
    SQLITE_DBSTATUS_CACHE_USED_SHARED
    +**
    This parameter is similar to DBSTATUS_CACHE_USED, except that if a +** pager cache is shared between two or more connections the bytes of heap +** memory used by that pager cache is divided evenly between the attached +** connections.)^ In other words, if none of the pager caches associated +** with the database connection are shared, this request returns the same +** value as DBSTATUS_CACHE_USED. Or, if one or more or the pager caches are +** shared, the value returned by this call will be smaller than that returned +** by DBSTATUS_CACHE_USED. ^The highwater mark associated with +** SQLITE_DBSTATUS_CACHE_USED_SHARED is always 0. +** ** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
    SQLITE_DBSTATUS_SCHEMA_USED
    -**
    This parameter returns the approximate number of of bytes of heap +**
    This parameter returns the approximate number of bytes of heap ** memory used to store the schema for all databases associated ** with the connection - main, temp, and any [ATTACH]-ed databases.)^ ** ^The full amount of memory used by the schemas is reported, even if the @@ -6355,7 +7268,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r ** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0. ** ** [[SQLITE_DBSTATUS_STMT_USED]] ^(
    SQLITE_DBSTATUS_STMT_USED
    -**
    This parameter returns the approximate number of of bytes of heap +**
    This parameter returns the approximate number of bytes of heap ** and lookaside memory used by all prepared statements associated with ** the database connection.)^ ** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0. @@ -6402,11 +7315,13 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r #define SQLITE_DBSTATUS_CACHE_MISS 8 #define SQLITE_DBSTATUS_CACHE_WRITE 9 #define SQLITE_DBSTATUS_DEFERRED_FKS 10 -#define SQLITE_DBSTATUS_MAX 10 /* Largest defined DBSTATUS */ +#define SQLITE_DBSTATUS_CACHE_USED_SHARED 11 +#define SQLITE_DBSTATUS_MAX 11 /* Largest defined DBSTATUS */ /* ** CAPI3REF: Prepared Statement Status +** METHOD: sqlite3_stmt ** ** ^(Each prepared statement maintains various ** [SQLITE_STMTSTATUS counters] that measure the number @@ -6755,6 +7670,10 @@ typedef struct sqlite3_backup sqlite3_backup; ** must be different or else sqlite3_backup_init(D,N,S,M) will fail with ** an error. ** +** ^A call to sqlite3_backup_init() will fail, returning NULL, if +** there is already a read or read-write transaction open on the +** destination database. +** ** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is ** returned and an error code and error message are stored in the ** destination [database connection] D. @@ -6847,20 +7766,20 @@ typedef struct sqlite3_backup sqlite3_backup; ** is not a permanent error and does not affect the return value of ** sqlite3_backup_finish(). ** -** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]] +** [[sqlite3_backup_remaining()]] [[sqlite3_backup_pagecount()]] ** sqlite3_backup_remaining() and sqlite3_backup_pagecount() ** -** ^Each call to sqlite3_backup_step() sets two values inside -** the [sqlite3_backup] object: the number of pages still to be backed -** up and the total number of pages in the source database file. -** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces -** retrieve these two values, respectively. -** -** ^The values returned by these functions are only updated by -** sqlite3_backup_step(). ^If the source database is modified during a backup -** operation, then the values are not updated to account for any extra -** pages that need to be updated or the size of the source database file -** changing. +** ^The sqlite3_backup_remaining() routine returns the number of pages still +** to be backed up at the conclusion of the most recent sqlite3_backup_step(). +** ^The sqlite3_backup_pagecount() routine returns the total number of pages +** in the source database at the conclusion of the most recent +** sqlite3_backup_step(). +** ^(The values returned by these functions are only updated by +** sqlite3_backup_step(). If the source database is modified in a way that +** changes the size of the source database or the number of pages remaining, +** those changes are not reflected in the output of sqlite3_backup_pagecount() +** and sqlite3_backup_remaining() until after the next +** sqlite3_backup_step().)^ ** ** Concurrent Usage of Database Handles ** @@ -6906,6 +7825,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p); /* ** CAPI3REF: Unlock Notification +** METHOD: sqlite3 ** ** ^When running in shared-cache mode, a database operation may fail with ** an [SQLITE_LOCKED] error if the required locks on the shared-cache or @@ -7039,18 +7959,43 @@ SQLITE_API int sqlite3_strnicmp(const char *, const char *, int); /* ** CAPI3REF: String Globbing * -** ^The [sqlite3_strglob(P,X)] interface returns zero if string X matches -** the glob pattern P, and it returns non-zero if string X does not match -** the glob pattern P. ^The definition of glob pattern matching used in +** ^The [sqlite3_strglob(P,X)] interface returns zero if and only if +** string X matches the [GLOB] pattern P. +** ^The definition of [GLOB] pattern matching used in ** [sqlite3_strglob(P,X)] is the same as for the "X GLOB P" operator in the -** SQL dialect used by SQLite. ^The sqlite3_strglob(P,X) function is case -** sensitive. +** SQL dialect understood by SQLite. ^The [sqlite3_strglob(P,X)] function +** is case sensitive. ** ** Note that this routine returns zero on a match and non-zero if the strings ** do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()]. +** +** See also: [sqlite3_strlike()]. */ SQLITE_API int sqlite3_strglob(const char *zGlob, const char *zStr); +/* +** CAPI3REF: String LIKE Matching +* +** ^The [sqlite3_strlike(P,X,E)] interface returns zero if and only if +** string X matches the [LIKE] pattern P with escape character E. +** ^The definition of [LIKE] pattern matching used in +** [sqlite3_strlike(P,X,E)] is the same as for the "X LIKE P ESCAPE E" +** operator in the SQL dialect understood by SQLite. ^For "X LIKE P" without +** the ESCAPE clause, set the E parameter of [sqlite3_strlike(P,X,E)] to 0. +** ^As with the LIKE operator, the [sqlite3_strlike(P,X,E)] function is case +** insensitive - equivalent upper and lower case ASCII characters match +** one another. +** +** ^The [sqlite3_strlike(P,X,E)] function matches Unicode characters, though +** only ASCII characters are case folded. +** +** Note that this routine returns zero on a match and non-zero if the strings +** do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()]. +** +** See also: [sqlite3_strglob()]. +*/ +SQLITE_API int sqlite3_strlike(const char *zGlob, const char *zStr, unsigned int cEsc); + /* ** CAPI3REF: Error Logging Interface ** @@ -7076,14 +8021,13 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); /* ** CAPI3REF: Write-Ahead Log Commit Hook +** METHOD: sqlite3 ** ** ^The [sqlite3_wal_hook()] function is used to register a callback that -** will be invoked each time a database connection commits data to a -** [write-ahead log] (i.e. whenever a transaction is committed in -** [journal_mode | journal_mode=WAL mode]). +** is invoked each time data is committed to a database in wal mode. ** -** ^The callback is invoked by SQLite after the commit has taken place and -** the associated write-lock on the database released, so the implementation +** ^(The callback is invoked by SQLite after the commit has taken place and +** the associated write-lock on the database released)^, so the implementation ** may read, write or [checkpoint] the database as required. ** ** ^The first parameter passed to the callback function when it is invoked @@ -7107,7 +8051,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...); ** previously registered write-ahead log callback. ^Note that the ** [sqlite3_wal_autocheckpoint()] interface and the ** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will -** those overwrite any prior [sqlite3_wal_hook()] settings. +** overwrite any prior [sqlite3_wal_hook()] settings. */ SQLITE_API void *sqlite3_wal_hook( sqlite3*, @@ -7117,6 +8061,7 @@ SQLITE_API void *sqlite3_wal_hook( /* ** CAPI3REF: Configure an auto-checkpoint +** METHOD: sqlite3 ** ** ^The [sqlite3_wal_autocheckpoint(D,N)] is a wrapper around ** [sqlite3_wal_hook()] that causes any database on [database connection] D @@ -7134,6 +8079,9 @@ SQLITE_API void *sqlite3_wal_hook( ** ^The [wal_autocheckpoint pragma] can be used to invoke this interface ** from SQL. ** +** ^Checkpoints initiated by this mechanism are +** [sqlite3_wal_checkpoint_v2|PASSIVE]. +** ** ^Every new [database connection] defaults to having the auto-checkpoint ** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT] ** pages. The use of this interface @@ -7144,91 +8092,117 @@ SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int N); /* ** CAPI3REF: Checkpoint a database +** METHOD: sqlite3 ** -** ^The [sqlite3_wal_checkpoint(D,X)] interface causes database named X -** on [database connection] D to be [checkpointed]. ^If X is NULL or an -** empty string, then a checkpoint is run on all databases of -** connection D. ^If the database connection D is not in -** [WAL | write-ahead log mode] then this interface is a harmless no-op. +** ^(The sqlite3_wal_checkpoint(D,X) is equivalent to +** [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^ ** -** ^The [wal_checkpoint pragma] can be used to invoke this interface -** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the -** [wal_autocheckpoint pragma] can be used to cause this interface to be -** run whenever the WAL reaches a certain size threshold. +** In brief, sqlite3_wal_checkpoint(D,X) causes the content in the +** [write-ahead log] for database X on [database connection] D to be +** transferred into the database file and for the write-ahead log to +** be reset. See the [checkpointing] documentation for addition +** information. ** -** See also: [sqlite3_wal_checkpoint_v2()] +** This interface used to be the only way to cause a checkpoint to +** occur. But then the newer and more powerful [sqlite3_wal_checkpoint_v2()] +** interface was added. This interface is retained for backwards +** compatibility and as a convenience for applications that need to manually +** start a callback but which do not need the full power (and corresponding +** complication) of [sqlite3_wal_checkpoint_v2()]. */ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); /* ** CAPI3REF: Checkpoint a database +** METHOD: sqlite3 ** -** Run a checkpoint operation on WAL database zDb attached to database -** handle db. The specific operation is determined by the value of the -** eMode parameter: +** ^(The sqlite3_wal_checkpoint_v2(D,X,M,L,C) interface runs a checkpoint +** operation on database X of [database connection] D in mode M. Status +** information is written back into integers pointed to by L and C.)^ +** ^(The M parameter must be a valid [checkpoint mode]:)^ ** **
    **
    SQLITE_CHECKPOINT_PASSIVE
    -** Checkpoint as many frames as possible without waiting for any database -** readers or writers to finish. Sync the db file if all frames in the log -** are checkpointed. This mode is the same as calling -** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked. +** ^Checkpoint as many frames as possible without waiting for any database +** readers or writers to finish, then sync the database file if all frames +** in the log were checkpointed. ^The [busy-handler callback] +** is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode. +** ^On the other hand, passive mode might leave the checkpoint unfinished +** if there are concurrent readers or writers. ** **
    SQLITE_CHECKPOINT_FULL
    -** This mode blocks (calls the busy-handler callback) until there is no +** ^This mode blocks (it invokes the +** [sqlite3_busy_handler|busy-handler callback]) until there is no ** database writer and all readers are reading from the most recent database -** snapshot. It then checkpoints all frames in the log file and syncs the -** database file. This call blocks database writers while it is running, -** but not database readers. +** snapshot. ^It then checkpoints all frames in the log file and syncs the +** database file. ^This mode blocks new database writers while it is pending, +** but new database readers are allowed to continue unimpeded. ** **
    SQLITE_CHECKPOINT_RESTART
    -** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after -** checkpointing the log file it blocks (calls the busy-handler callback) -** until all readers are reading from the database file only. This ensures -** that the next client to write to the database file restarts the log file -** from the beginning. This call blocks database writers while it is running, -** but not database readers. +** ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition +** that after checkpointing the log file it blocks (calls the +** [busy-handler callback]) +** until all readers are reading from the database file only. ^This ensures +** that the next writer will restart the log file from the beginning. +** ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new +** database writer attempts while it is pending, but does not impede readers. +** +**
    SQLITE_CHECKPOINT_TRUNCATE
    +** ^This mode works the same way as SQLITE_CHECKPOINT_RESTART with the +** addition that it also truncates the log file to zero bytes just prior +** to a successful return. **
    ** -** If pnLog is not NULL, then *pnLog is set to the total number of frames in -** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to -** the total number of checkpointed frames (including any that were already -** checkpointed when this function is called). *pnLog and *pnCkpt may be -** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK. -** If no values are available because of an error, they are both set to -1 -** before returning to communicate this to the caller. +** ^If pnLog is not NULL, then *pnLog is set to the total number of frames in +** the log file or to -1 if the checkpoint could not run because +** of an error or because the database is not in [WAL mode]. ^If pnCkpt is not +** NULL,then *pnCkpt is set to the total number of checkpointed frames in the +** log file (including any that were already checkpointed before the function +** was called) or to -1 if the checkpoint could not run due to an error or +** because the database is not in WAL mode. ^Note that upon successful +** completion of an SQLITE_CHECKPOINT_TRUNCATE, the log file will have been +** truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero. ** -** All calls obtain an exclusive "checkpoint" lock on the database file. If +** ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If ** any other process is running a checkpoint operation at the same time, the -** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a +** lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a ** busy-handler configured, it will not be invoked in this case. ** -** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive -** "writer" lock on the database file. If the writer lock cannot be obtained -** immediately, and a busy-handler is configured, it is invoked and the writer -** lock retried until either the busy-handler returns 0 or the lock is -** successfully obtained. The busy-handler is also invoked while waiting for -** database readers as described above. If the busy-handler returns 0 before +** ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the +** exclusive "writer" lock on the database file. ^If the writer lock cannot be +** obtained immediately, and a busy-handler is configured, it is invoked and +** the writer lock retried until either the busy-handler returns 0 or the lock +** is successfully obtained. ^The busy-handler is also invoked while waiting for +** database readers as described above. ^If the busy-handler returns 0 before ** the writer lock is obtained or while waiting for database readers, the ** checkpoint operation proceeds from that point in the same way as ** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible -** without blocking any further. SQLITE_BUSY is returned in this case. +** without blocking any further. ^SQLITE_BUSY is returned in this case. ** -** If parameter zDb is NULL or points to a zero length string, then the -** specified operation is attempted on all WAL databases. In this case the -** values written to output parameters *pnLog and *pnCkpt are undefined. If +** ^If parameter zDb is NULL or points to a zero length string, then the +** specified operation is attempted on all WAL databases [attached] to +** [database connection] db. In this case the +** values written to output parameters *pnLog and *pnCkpt are undefined. ^If ** an SQLITE_BUSY error is encountered when processing one or more of the ** attached WAL databases, the operation is still attempted on any remaining -** attached databases and SQLITE_BUSY is returned to the caller. If any other +** attached databases and SQLITE_BUSY is returned at the end. ^If any other ** error occurs while processing an attached database, processing is abandoned -** and the error code returned to the caller immediately. If no error +** and the error code is returned to the caller immediately. ^If no error ** (SQLITE_BUSY or otherwise) is encountered while processing the attached ** databases, SQLITE_OK is returned. ** -** If database zDb is the name of an attached database that is not in WAL -** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If +** ^If database zDb is the name of an attached database that is not in WAL +** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. ^If ** zDb is not NULL (or a zero length string) and is not the name of any ** attached database, SQLITE_ERROR is returned to the caller. +** +** ^Unless it returns SQLITE_MISUSE, +** the sqlite3_wal_checkpoint_v2() interface +** sets the error information that is queried by +** [sqlite3_errcode()] and [sqlite3_errmsg()]. +** +** ^The [PRAGMA wal_checkpoint] command can be used to invoke this interface +** from SQL. */ SQLITE_API int sqlite3_wal_checkpoint_v2( sqlite3 *db, /* Database handle */ @@ -7239,16 +8213,18 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( ); /* -** CAPI3REF: Checkpoint operation parameters +** CAPI3REF: Checkpoint Mode Values +** KEYWORDS: {checkpoint mode} ** -** These constants can be used as the 3rd parameter to -** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()] -** documentation for additional information about the meaning and use of -** each of these values. +** These constants define all valid values for the "checkpoint mode" passed +** as the third parameter to the [sqlite3_wal_checkpoint_v2()] interface. +** See the [sqlite3_wal_checkpoint_v2()] documentation for details on the +** meaning of each of these checkpoint modes. */ -#define SQLITE_CHECKPOINT_PASSIVE 0 -#define SQLITE_CHECKPOINT_FULL 1 -#define SQLITE_CHECKPOINT_RESTART 2 +#define SQLITE_CHECKPOINT_PASSIVE 0 /* Do as much as possible w/o blocking */ +#define SQLITE_CHECKPOINT_FULL 1 /* Wait for writers, then checkpoint */ +#define SQLITE_CHECKPOINT_RESTART 2 /* Like FULL but wait for for readers */ +#define SQLITE_CHECKPOINT_TRUNCATE 3 /* Like RESTART but also truncate WAL */ /* ** CAPI3REF: Virtual Table Interface Configuration @@ -7321,6 +8297,7 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); /* ** CAPI3REF: Conflict resolution modes +** KEYWORDS: {conflict resolution mode} ** ** These constants are returned by [sqlite3_vtab_on_conflict()] to ** inform a [virtual table] implementation what the [ON CONFLICT] mode @@ -7336,7 +8313,433 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); /* #define SQLITE_ABORT 4 // Also an error code */ #define SQLITE_REPLACE 5 +/* +** CAPI3REF: Prepared Statement Scan Status Opcodes +** KEYWORDS: {scanstatus options} +** +** The following constants can be used for the T parameter to the +** [sqlite3_stmt_scanstatus(S,X,T,V)] interface. Each constant designates a +** different metric for sqlite3_stmt_scanstatus() to return. +** +** When the value returned to V is a string, space to hold that string is +** managed by the prepared statement S and will be automatically freed when +** S is finalized. +** +**
    +** [[SQLITE_SCANSTAT_NLOOP]]
    SQLITE_SCANSTAT_NLOOP
    +**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be +** set to the total number of times that the X-th loop has run.
    +** +** [[SQLITE_SCANSTAT_NVISIT]]
    SQLITE_SCANSTAT_NVISIT
    +**
    ^The [sqlite3_int64] variable pointed to by the T parameter will be set +** to the total number of rows examined by all iterations of the X-th loop.
    +** +** [[SQLITE_SCANSTAT_EST]]
    SQLITE_SCANSTAT_EST
    +**
    ^The "double" variable pointed to by the T parameter will be set to the +** query planner's estimate for the average number of rows output from each +** iteration of the X-th loop. If the query planner's estimates was accurate, +** then this value will approximate the quotient NVISIT/NLOOP and the +** product of this value for all prior loops with the same SELECTID will +** be the NLOOP value for the current loop. +** +** [[SQLITE_SCANSTAT_NAME]]
    SQLITE_SCANSTAT_NAME
    +**
    ^The "const char *" variable pointed to by the T parameter will be set +** to a zero-terminated UTF-8 string containing the name of the index or table +** used for the X-th loop. +** +** [[SQLITE_SCANSTAT_EXPLAIN]]
    SQLITE_SCANSTAT_EXPLAIN
    +**
    ^The "const char *" variable pointed to by the T parameter will be set +** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN] +** description for the X-th loop. +** +** [[SQLITE_SCANSTAT_SELECTID]]
    SQLITE_SCANSTAT_SELECT
    +**
    ^The "int" variable pointed to by the T parameter will be set to the +** "select-id" for the X-th loop. The select-id identifies which query or +** subquery the loop is part of. The main query has a select-id of zero. +** The select-id is the same value as is output in the first column +** of an [EXPLAIN QUERY PLAN] query. +**
    +*/ +#define SQLITE_SCANSTAT_NLOOP 0 +#define SQLITE_SCANSTAT_NVISIT 1 +#define SQLITE_SCANSTAT_EST 2 +#define SQLITE_SCANSTAT_NAME 3 +#define SQLITE_SCANSTAT_EXPLAIN 4 +#define SQLITE_SCANSTAT_SELECTID 5 +/* +** CAPI3REF: Prepared Statement Scan Status +** METHOD: sqlite3_stmt +** +** This interface returns information about the predicted and measured +** performance for pStmt. Advanced applications can use this +** interface to compare the predicted and the measured performance and +** issue warnings and/or rerun [ANALYZE] if discrepancies are found. +** +** Since this interface is expected to be rarely used, it is only +** available if SQLite is compiled using the [SQLITE_ENABLE_STMT_SCANSTATUS] +** compile-time option. +** +** The "iScanStatusOp" parameter determines which status information to return. +** The "iScanStatusOp" must be one of the [scanstatus options] or the behavior +** of this interface is undefined. +** ^The requested measurement is written into a variable pointed to by +** the "pOut" parameter. +** Parameter "idx" identifies the specific loop to retrieve statistics for. +** Loops are numbered starting from zero. ^If idx is out of range - less than +** zero or greater than or equal to the total number of loops used to implement +** the statement - a non-zero value is returned and the variable that pOut +** points to is unchanged. +** +** ^Statistics might not be available for all loops in all statements. ^In cases +** where there exist loops with no available statistics, this function behaves +** as if the loop did not exist - it returns non-zero and leave the variable +** that pOut points to unchanged. +** +** See also: [sqlite3_stmt_scanstatus_reset()] +*/ +SQLITE_API int sqlite3_stmt_scanstatus( + sqlite3_stmt *pStmt, /* Prepared statement for which info desired */ + int idx, /* Index of loop to report on */ + int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */ + void *pOut /* Result written here */ +); + +/* +** CAPI3REF: Zero Scan-Status Counters +** METHOD: sqlite3_stmt +** +** ^Zero all [sqlite3_stmt_scanstatus()] related event counters. +** +** This API is only available if the library is built with pre-processor +** symbol [SQLITE_ENABLE_STMT_SCANSTATUS] defined. +*/ +SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*); + +/* +** CAPI3REF: Flush caches to disk mid-transaction +** +** ^If a write-transaction is open on [database connection] D when the +** [sqlite3_db_cacheflush(D)] interface invoked, any dirty +** pages in the pager-cache that are not currently in use are written out +** to disk. A dirty page may be in use if a database cursor created by an +** active SQL statement is reading from it, or if it is page 1 of a database +** file (page 1 is always "in use"). ^The [sqlite3_db_cacheflush(D)] +** interface flushes caches for all schemas - "main", "temp", and +** any [attached] databases. +** +** ^If this function needs to obtain extra database locks before dirty pages +** can be flushed to disk, it does so. ^If those locks cannot be obtained +** immediately and there is a busy-handler callback configured, it is invoked +** in the usual manner. ^If the required lock still cannot be obtained, then +** the database is skipped and an attempt made to flush any dirty pages +** belonging to the next (if any) database. ^If any databases are skipped +** because locks cannot be obtained, but no other error occurs, this +** function returns SQLITE_BUSY. +** +** ^If any other error occurs while flushing dirty pages to disk (for +** example an IO error or out-of-memory condition), then processing is +** abandoned and an SQLite [error code] is returned to the caller immediately. +** +** ^Otherwise, if no error occurs, [sqlite3_db_cacheflush()] returns SQLITE_OK. +** +** ^This function does not set the database handle error code or message +** returned by the [sqlite3_errcode()] and [sqlite3_errmsg()] functions. +*/ +SQLITE_API int sqlite3_db_cacheflush(sqlite3*); + +/* +** CAPI3REF: The pre-update hook. +** +** ^These interfaces are only available if SQLite is compiled using the +** [SQLITE_ENABLE_PREUPDATE_HOOK] compile-time option. +** +** ^The [sqlite3_preupdate_hook()] interface registers a callback function +** that is invoked prior to each [INSERT], [UPDATE], and [DELETE] operation +** on a database table. +** ^At most one preupdate hook may be registered at a time on a single +** [database connection]; each call to [sqlite3_preupdate_hook()] overrides +** the previous setting. +** ^The preupdate hook is disabled by invoking [sqlite3_preupdate_hook()] +** with a NULL pointer as the second parameter. +** ^The third parameter to [sqlite3_preupdate_hook()] is passed through as +** the first parameter to callbacks. +** +** ^The preupdate hook only fires for changes to real database tables; the +** preupdate hook is not invoked for changes to [virtual tables] or to +** system tables like sqlite_master or sqlite_stat1. +** +** ^The second parameter to the preupdate callback is a pointer to +** the [database connection] that registered the preupdate hook. +** ^The third parameter to the preupdate callback is one of the constants +** [SQLITE_INSERT], [SQLITE_DELETE], or [SQLITE_UPDATE] to identify the +** kind of update operation that is about to occur. +** ^(The fourth parameter to the preupdate callback is the name of the +** database within the database connection that is being modified. This +** will be "main" for the main database or "temp" for TEMP tables or +** the name given after the AS keyword in the [ATTACH] statement for attached +** databases.)^ +** ^The fifth parameter to the preupdate callback is the name of the +** table that is being modified. +** +** For an UPDATE or DELETE operation on a [rowid table], the sixth +** parameter passed to the preupdate callback is the initial [rowid] of the +** row being modified or deleted. For an INSERT operation on a rowid table, +** or any operation on a WITHOUT ROWID table, the value of the sixth +** parameter is undefined. For an INSERT or UPDATE on a rowid table the +** seventh parameter is the final rowid value of the row being inserted +** or updated. The value of the seventh parameter passed to the callback +** function is not defined for operations on WITHOUT ROWID tables, or for +** INSERT operations on rowid tables. +** +** The [sqlite3_preupdate_old()], [sqlite3_preupdate_new()], +** [sqlite3_preupdate_count()], and [sqlite3_preupdate_depth()] interfaces +** provide additional information about a preupdate event. These routines +** may only be called from within a preupdate callback. Invoking any of +** these routines from outside of a preupdate callback or with a +** [database connection] pointer that is different from the one supplied +** to the preupdate callback results in undefined and probably undesirable +** behavior. +** +** ^The [sqlite3_preupdate_count(D)] interface returns the number of columns +** in the row that is being inserted, updated, or deleted. +** +** ^The [sqlite3_preupdate_old(D,N,P)] interface writes into P a pointer to +** a [protected sqlite3_value] that contains the value of the Nth column of +** the table row before it is updated. The N parameter must be between 0 +** and one less than the number of columns or the behavior will be +** undefined. This must only be used within SQLITE_UPDATE and SQLITE_DELETE +** preupdate callbacks; if it is used by an SQLITE_INSERT callback then the +** behavior is undefined. The [sqlite3_value] that P points to +** will be destroyed when the preupdate callback returns. +** +** ^The [sqlite3_preupdate_new(D,N,P)] interface writes into P a pointer to +** a [protected sqlite3_value] that contains the value of the Nth column of +** the table row after it is updated. The N parameter must be between 0 +** and one less than the number of columns or the behavior will be +** undefined. This must only be used within SQLITE_INSERT and SQLITE_UPDATE +** preupdate callbacks; if it is used by an SQLITE_DELETE callback then the +** behavior is undefined. The [sqlite3_value] that P points to +** will be destroyed when the preupdate callback returns. +** +** ^The [sqlite3_preupdate_depth(D)] interface returns 0 if the preupdate +** callback was invoked as a result of a direct insert, update, or delete +** operation; or 1 for inserts, updates, or deletes invoked by top-level +** triggers; or 2 for changes resulting from triggers called by top-level +** triggers; and so forth. +** +** See also: [sqlite3_update_hook()] +*/ +#if defined(SQLITE_ENABLE_PREUPDATE_HOOK) +SQLITE_API void *sqlite3_preupdate_hook( + sqlite3 *db, + void(*xPreUpdate)( + void *pCtx, /* Copy of third arg to preupdate_hook() */ + sqlite3 *db, /* Database handle */ + int op, /* SQLITE_UPDATE, DELETE or INSERT */ + char const *zDb, /* Database name */ + char const *zName, /* Table name */ + sqlite3_int64 iKey1, /* Rowid of row about to be deleted/updated */ + sqlite3_int64 iKey2 /* New rowid value (for a rowid UPDATE) */ + ), + void* +); +SQLITE_API int sqlite3_preupdate_old(sqlite3 *, int, sqlite3_value **); +SQLITE_API int sqlite3_preupdate_count(sqlite3 *); +SQLITE_API int sqlite3_preupdate_depth(sqlite3 *); +SQLITE_API int sqlite3_preupdate_new(sqlite3 *, int, sqlite3_value **); +#endif + +/* +** CAPI3REF: Low-level system error code +** +** ^Attempt to return the underlying operating system error code or error +** number that caused the most recent I/O error or failure to open a file. +** The return value is OS-dependent. For example, on unix systems, after +** [sqlite3_open_v2()] returns [SQLITE_CANTOPEN], this interface could be +** called to get back the underlying "errno" that caused the problem, such +** as ENOSPC, EAUTH, EISDIR, and so forth. +*/ +SQLITE_API int sqlite3_system_errno(sqlite3*); + +/* +** CAPI3REF: Database Snapshot +** KEYWORDS: {snapshot} {sqlite3_snapshot} +** EXPERIMENTAL +** +** An instance of the snapshot object records the state of a [WAL mode] +** database for some specific point in history. +** +** In [WAL mode], multiple [database connections] that are open on the +** same database file can each be reading a different historical version +** of the database file. When a [database connection] begins a read +** transaction, that connection sees an unchanging copy of the database +** as it existed for the point in time when the transaction first started. +** Subsequent changes to the database from other connections are not seen +** by the reader until a new read transaction is started. +** +** The sqlite3_snapshot object records state information about an historical +** version of the database file so that it is possible to later open a new read +** transaction that sees that historical version of the database rather than +** the most recent version. +** +** The constructor for this object is [sqlite3_snapshot_get()]. The +** [sqlite3_snapshot_open()] method causes a fresh read transaction to refer +** to an historical snapshot (if possible). The destructor for +** sqlite3_snapshot objects is [sqlite3_snapshot_free()]. +*/ +typedef struct sqlite3_snapshot { + unsigned char hidden[48]; +} sqlite3_snapshot; + +/* +** CAPI3REF: Record A Database Snapshot +** EXPERIMENTAL +** +** ^The [sqlite3_snapshot_get(D,S,P)] interface attempts to make a +** new [sqlite3_snapshot] object that records the current state of +** schema S in database connection D. ^On success, the +** [sqlite3_snapshot_get(D,S,P)] interface writes a pointer to the newly +** created [sqlite3_snapshot] object into *P and returns SQLITE_OK. +** If there is not already a read-transaction open on schema S when +** this function is called, one is opened automatically. +** +** The following must be true for this function to succeed. If any of +** the following statements are false when sqlite3_snapshot_get() is +** called, SQLITE_ERROR is returned. The final value of *P is undefined +** in this case. +** +**
      +**
    • The database handle must be in [autocommit mode]. +** +**
    • Schema S of [database connection] D must be a [WAL mode] database. +** +**
    • There must not be a write transaction open on schema S of database +** connection D. +** +**
    • One or more transactions must have been written to the current wal +** file since it was created on disk (by any connection). This means +** that a snapshot cannot be taken on a wal mode database with no wal +** file immediately after it is first opened. At least one transaction +** must be written to it first. +**
    +** +** This function may also return SQLITE_NOMEM. If it is called with the +** database handle in autocommit mode but fails for some other reason, +** whether or not a read transaction is opened on schema S is undefined. +** +** The [sqlite3_snapshot] object returned from a successful call to +** [sqlite3_snapshot_get()] must be freed using [sqlite3_snapshot_free()] +** to avoid a memory leak. +** +** The [sqlite3_snapshot_get()] interface is only available when the +** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +*/ +SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_get( + sqlite3 *db, + const char *zSchema, + sqlite3_snapshot **ppSnapshot +); + +/* +** CAPI3REF: Start a read transaction on an historical snapshot +** EXPERIMENTAL +** +** ^The [sqlite3_snapshot_open(D,S,P)] interface starts a +** read transaction for schema S of +** [database connection] D such that the read transaction +** refers to historical [snapshot] P, rather than the most +** recent change to the database. +** ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK on success +** or an appropriate [error code] if it fails. +** +** ^In order to succeed, a call to [sqlite3_snapshot_open(D,S,P)] must be +** the first operation following the [BEGIN] that takes the schema S +** out of [autocommit mode]. +** ^In other words, schema S must not currently be in +** a transaction for [sqlite3_snapshot_open(D,S,P)] to work, but the +** database connection D must be out of [autocommit mode]. +** ^A [snapshot] will fail to open if it has been overwritten by a +** [checkpoint]. +** ^(A call to [sqlite3_snapshot_open(D,S,P)] will fail if the +** database connection D does not know that the database file for +** schema S is in [WAL mode]. A database connection might not know +** that the database file is in [WAL mode] if there has been no prior +** I/O on that database connection, or if the database entered [WAL mode] +** after the most recent I/O on the database connection.)^ +** (Hint: Run "[PRAGMA application_id]" against a newly opened +** database connection in order to make it ready to use snapshots.) +** +** The [sqlite3_snapshot_open()] interface is only available when the +** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +*/ +SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_open( + sqlite3 *db, + const char *zSchema, + sqlite3_snapshot *pSnapshot +); + +/* +** CAPI3REF: Destroy a snapshot +** EXPERIMENTAL +** +** ^The [sqlite3_snapshot_free(P)] interface destroys [sqlite3_snapshot] P. +** The application must eventually free every [sqlite3_snapshot] object +** using this routine to avoid a memory leak. +** +** The [sqlite3_snapshot_free()] interface is only available when the +** SQLITE_ENABLE_SNAPSHOT compile-time option is used. +*/ +SQLITE_API SQLITE_EXPERIMENTAL void sqlite3_snapshot_free(sqlite3_snapshot*); + +/* +** CAPI3REF: Compare the ages of two snapshot handles. +** EXPERIMENTAL +** +** The sqlite3_snapshot_cmp(P1, P2) interface is used to compare the ages +** of two valid snapshot handles. +** +** If the two snapshot handles are not associated with the same database +** file, the result of the comparison is undefined. +** +** Additionally, the result of the comparison is only valid if both of the +** snapshot handles were obtained by calling sqlite3_snapshot_get() since the +** last time the wal file was deleted. The wal file is deleted when the +** database is changed back to rollback mode or when the number of database +** clients drops to zero. If either snapshot handle was obtained before the +** wal file was last deleted, the value returned by this function +** is undefined. +** +** Otherwise, this API returns a negative value if P1 refers to an older +** snapshot than P2, zero if the two handles refer to the same database +** snapshot, and a positive value if P1 is a newer snapshot than P2. +*/ +SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_cmp( + sqlite3_snapshot *p1, + sqlite3_snapshot *p2 +); + +/* +** CAPI3REF: Recover snapshots from a wal file +** EXPERIMENTAL +** +** If all connections disconnect from a database file but do not perform +** a checkpoint, the existing wal file is opened along with the database +** file the next time the database is opened. At this point it is only +** possible to successfully call sqlite3_snapshot_open() to open the most +** recent snapshot of the database (the one at the head of the wal file), +** even though the wal file may contain other valid snapshots for which +** clients have sqlite3_snapshot handles. +** +** This function attempts to scan the wal file associated with database zDb +** of database handle db and make all valid snapshots available to +** sqlite3_snapshot_open(). It is an error if there is already a read +** transaction open on the database, or if the database is not a wal mode +** database. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +SQLITE_API SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb); /* ** Undo the hack that converts floating point types to integer for @@ -7349,8 +8752,9 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *); #if 0 } /* End of the 'extern "C"' block */ #endif -#endif /* _SQLITE3_H_ */ +#endif /* SQLITE3_H */ +/******** Begin file sqlite3rtree.h *********/ /* ** 2010 August 30 ** @@ -7373,6 +8777,16 @@ extern "C" { #endif typedef struct sqlite3_rtree_geometry sqlite3_rtree_geometry; +typedef struct sqlite3_rtree_query_info sqlite3_rtree_query_info; + +/* The double-precision datatype used by RTree depends on the +** SQLITE_RTREE_INT_ONLY compile-time option. +*/ +#ifdef SQLITE_RTREE_INT_ONLY + typedef sqlite3_int64 sqlite3_rtree_dbl; +#else + typedef double sqlite3_rtree_dbl; +#endif /* ** Register a geometry callback named zGeom that can be used as part of an @@ -7383,11 +8797,7 @@ typedef struct sqlite3_rtree_geometry sqlite3_rtree_geometry; SQLITE_API int sqlite3_rtree_geometry_callback( sqlite3 *db, const char *zGeom, -#ifdef SQLITE_RTREE_INT_ONLY - int (*xGeom)(sqlite3_rtree_geometry*, int n, sqlite3_int64 *a, int *pRes), -#else - int (*xGeom)(sqlite3_rtree_geometry*, int n, double *a, int *pRes), -#endif + int (*xGeom)(sqlite3_rtree_geometry*, int, sqlite3_rtree_dbl*,int*), void *pContext ); @@ -7399,11 +8809,62 @@ SQLITE_API int sqlite3_rtree_geometry_callback( struct sqlite3_rtree_geometry { void *pContext; /* Copy of pContext passed to s_r_g_c() */ int nParam; /* Size of array aParam[] */ - double *aParam; /* Parameters passed to SQL geom function */ + sqlite3_rtree_dbl *aParam; /* Parameters passed to SQL geom function */ void *pUser; /* Callback implementation user data */ void (*xDelUser)(void *); /* Called by SQLite to clean up pUser */ }; +/* +** Register a 2nd-generation geometry callback named zScore that can be +** used as part of an R-Tree geometry query as follows: +** +** SELECT ... FROM WHERE MATCH $zQueryFunc(... params ...) +*/ +SQLITE_API int sqlite3_rtree_query_callback( + sqlite3 *db, + const char *zQueryFunc, + int (*xQueryFunc)(sqlite3_rtree_query_info*), + void *pContext, + void (*xDestructor)(void*) +); + + +/* +** A pointer to a structure of the following type is passed as the +** argument to scored geometry callback registered using +** sqlite3_rtree_query_callback(). +** +** Note that the first 5 fields of this structure are identical to +** sqlite3_rtree_geometry. This structure is a subclass of +** sqlite3_rtree_geometry. +*/ +struct sqlite3_rtree_query_info { + void *pContext; /* pContext from when function registered */ + int nParam; /* Number of function parameters */ + sqlite3_rtree_dbl *aParam; /* value of function parameters */ + void *pUser; /* callback can use this, if desired */ + void (*xDelUser)(void*); /* function to free pUser */ + sqlite3_rtree_dbl *aCoord; /* Coordinates of node or entry to check */ + unsigned int *anQueue; /* Number of pending entries in the queue */ + int nCoord; /* Number of coordinates */ + int iLevel; /* Level of current node or entry */ + int mxLevel; /* The largest iLevel value in the tree */ + sqlite3_int64 iRowid; /* Rowid for current entry */ + sqlite3_rtree_dbl rParentScore; /* Score of parent node */ + int eParentWithin; /* Visibility of parent node */ + int eWithin; /* OUT: Visiblity */ + sqlite3_rtree_dbl rScore; /* OUT: Write the score here */ + /* The following fields are only available in 3.8.11 and later */ + sqlite3_value **apSqlParam; /* Original SQL values of parameters */ +}; + +/* +** Allowed values for sqlite3_rtree_query.eWithin and .eParentWithin. +*/ +#define NOT_WITHIN 0 /* Object completely outside of query region */ +#define PARTLY_WITHIN 1 /* Object partially overlaps query region */ +#define FULLY_WITHIN 2 /* Object fully contained within query region */ + #if 0 } /* end of the 'extern "C"' block */ @@ -7411,11 +8872,1300 @@ struct sqlite3_rtree_geometry { #endif /* ifndef _SQLITE3RTREE_H_ */ +/******** End of sqlite3rtree.h *********/ +/******** Begin file sqlite3session.h *********/ + +#if !defined(__SQLITESESSION_H_) && defined(SQLITE_ENABLE_SESSION) +#define __SQLITESESSION_H_ 1 -/************** End of sqlite3.h *********************************************/ -/************** Begin file sqliteInt.h ***************************************/ /* -** 2001 September 15 +** Make sure we can call this stuff from C++. +*/ +#if 0 +extern "C" { +#endif + + +/* +** CAPI3REF: Session Object Handle +*/ +typedef struct sqlite3_session sqlite3_session; + +/* +** CAPI3REF: Changeset Iterator Handle +*/ +typedef struct sqlite3_changeset_iter sqlite3_changeset_iter; + +/* +** CAPI3REF: Create A New Session Object +** +** Create a new session object attached to database handle db. If successful, +** a pointer to the new object is written to *ppSession and SQLITE_OK is +** returned. If an error occurs, *ppSession is set to NULL and an SQLite +** error code (e.g. SQLITE_NOMEM) is returned. +** +** It is possible to create multiple session objects attached to a single +** database handle. +** +** Session objects created using this function should be deleted using the +** [sqlite3session_delete()] function before the database handle that they +** are attached to is itself closed. If the database handle is closed before +** the session object is deleted, then the results of calling any session +** module function, including [sqlite3session_delete()] on the session object +** are undefined. +** +** Because the session module uses the [sqlite3_preupdate_hook()] API, it +** is not possible for an application to register a pre-update hook on a +** database handle that has one or more session objects attached. Nor is +** it possible to create a session object attached to a database handle for +** which a pre-update hook is already defined. The results of attempting +** either of these things are undefined. +** +** The session object will be used to create changesets for tables in +** database zDb, where zDb is either "main", or "temp", or the name of an +** attached database. It is not an error if database zDb is not attached +** to the database when the session object is created. +*/ +SQLITE_API int sqlite3session_create( + sqlite3 *db, /* Database handle */ + const char *zDb, /* Name of db (e.g. "main") */ + sqlite3_session **ppSession /* OUT: New session object */ +); + +/* +** CAPI3REF: Delete A Session Object +** +** Delete a session object previously allocated using +** [sqlite3session_create()]. Once a session object has been deleted, the +** results of attempting to use pSession with any other session module +** function are undefined. +** +** Session objects must be deleted before the database handle to which they +** are attached is closed. Refer to the documentation for +** [sqlite3session_create()] for details. +*/ +SQLITE_API void sqlite3session_delete(sqlite3_session *pSession); + + +/* +** CAPI3REF: Enable Or Disable A Session Object +** +** Enable or disable the recording of changes by a session object. When +** enabled, a session object records changes made to the database. When +** disabled - it does not. A newly created session object is enabled. +** Refer to the documentation for [sqlite3session_changeset()] for further +** details regarding how enabling and disabling a session object affects +** the eventual changesets. +** +** Passing zero to this function disables the session. Passing a value +** greater than zero enables it. Passing a value less than zero is a +** no-op, and may be used to query the current state of the session. +** +** The return value indicates the final state of the session object: 0 if +** the session is disabled, or 1 if it is enabled. +*/ +SQLITE_API int sqlite3session_enable(sqlite3_session *pSession, int bEnable); + +/* +** CAPI3REF: Set Or Clear the Indirect Change Flag +** +** Each change recorded by a session object is marked as either direct or +** indirect. A change is marked as indirect if either: +** +**
      +**
    • The session object "indirect" flag is set when the change is +** made, or +**
    • The change is made by an SQL trigger or foreign key action +** instead of directly as a result of a users SQL statement. +**
    +** +** If a single row is affected by more than one operation within a session, +** then the change is considered indirect if all operations meet the criteria +** for an indirect change above, or direct otherwise. +** +** This function is used to set, clear or query the session object indirect +** flag. If the second argument passed to this function is zero, then the +** indirect flag is cleared. If it is greater than zero, the indirect flag +** is set. Passing a value less than zero does not modify the current value +** of the indirect flag, and may be used to query the current state of the +** indirect flag for the specified session object. +** +** The return value indicates the final state of the indirect flag: 0 if +** it is clear, or 1 if it is set. +*/ +SQLITE_API int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect); + +/* +** CAPI3REF: Attach A Table To A Session Object +** +** If argument zTab is not NULL, then it is the name of a table to attach +** to the session object passed as the first argument. All subsequent changes +** made to the table while the session object is enabled will be recorded. See +** documentation for [sqlite3session_changeset()] for further details. +** +** Or, if argument zTab is NULL, then changes are recorded for all tables +** in the database. If additional tables are added to the database (by +** executing "CREATE TABLE" statements) after this call is made, changes for +** the new tables are also recorded. +** +** Changes can only be recorded for tables that have a PRIMARY KEY explicitly +** defined as part of their CREATE TABLE statement. It does not matter if the +** PRIMARY KEY is an "INTEGER PRIMARY KEY" (rowid alias) or not. The PRIMARY +** KEY may consist of a single column, or may be a composite key. +** +** It is not an error if the named table does not exist in the database. Nor +** is it an error if the named table does not have a PRIMARY KEY. However, +** no changes will be recorded in either of these scenarios. +** +** Changes are not recorded for individual rows that have NULL values stored +** in one or more of their PRIMARY KEY columns. +** +** SQLITE_OK is returned if the call completes without error. Or, if an error +** occurs, an SQLite error code (e.g. SQLITE_NOMEM) is returned. +*/ +SQLITE_API int sqlite3session_attach( + sqlite3_session *pSession, /* Session object */ + const char *zTab /* Table name */ +); + +/* +** CAPI3REF: Set a table filter on a Session Object. +** +** The second argument (xFilter) is the "filter callback". For changes to rows +** in tables that are not attached to the Session object, the filter is called +** to determine whether changes to the table's rows should be tracked or not. +** If xFilter returns 0, changes is not tracked. Note that once a table is +** attached, xFilter will not be called again. +*/ +SQLITE_API void sqlite3session_table_filter( + sqlite3_session *pSession, /* Session object */ + int(*xFilter)( + void *pCtx, /* Copy of third arg to _filter_table() */ + const char *zTab /* Table name */ + ), + void *pCtx /* First argument passed to xFilter */ +); + +/* +** CAPI3REF: Generate A Changeset From A Session Object +** +** Obtain a changeset containing changes to the tables attached to the +** session object passed as the first argument. If successful, +** set *ppChangeset to point to a buffer containing the changeset +** and *pnChangeset to the size of the changeset in bytes before returning +** SQLITE_OK. If an error occurs, set both *ppChangeset and *pnChangeset to +** zero and return an SQLite error code. +** +** A changeset consists of zero or more INSERT, UPDATE and/or DELETE changes, +** each representing a change to a single row of an attached table. An INSERT +** change contains the values of each field of a new database row. A DELETE +** contains the original values of each field of a deleted database row. An +** UPDATE change contains the original values of each field of an updated +** database row along with the updated values for each updated non-primary-key +** column. It is not possible for an UPDATE change to represent a change that +** modifies the values of primary key columns. If such a change is made, it +** is represented in a changeset as a DELETE followed by an INSERT. +** +** Changes are not recorded for rows that have NULL values stored in one or +** more of their PRIMARY KEY columns. If such a row is inserted or deleted, +** no corresponding change is present in the changesets returned by this +** function. If an existing row with one or more NULL values stored in +** PRIMARY KEY columns is updated so that all PRIMARY KEY columns are non-NULL, +** only an INSERT is appears in the changeset. Similarly, if an existing row +** with non-NULL PRIMARY KEY values is updated so that one or more of its +** PRIMARY KEY columns are set to NULL, the resulting changeset contains a +** DELETE change only. +** +** The contents of a changeset may be traversed using an iterator created +** using the [sqlite3changeset_start()] API. A changeset may be applied to +** a database with a compatible schema using the [sqlite3changeset_apply()] +** API. +** +** Within a changeset generated by this function, all changes related to a +** single table are grouped together. In other words, when iterating through +** a changeset or when applying a changeset to a database, all changes related +** to a single table are processed before moving on to the next table. Tables +** are sorted in the same order in which they were attached (or auto-attached) +** to the sqlite3_session object. The order in which the changes related to +** a single table are stored is undefined. +** +** Following a successful call to this function, it is the responsibility of +** the caller to eventually free the buffer that *ppChangeset points to using +** [sqlite3_free()]. +** +**

    Changeset Generation

    +** +** Once a table has been attached to a session object, the session object +** records the primary key values of all new rows inserted into the table. +** It also records the original primary key and other column values of any +** deleted or updated rows. For each unique primary key value, data is only +** recorded once - the first time a row with said primary key is inserted, +** updated or deleted in the lifetime of the session. +** +** There is one exception to the previous paragraph: when a row is inserted, +** updated or deleted, if one or more of its primary key columns contain a +** NULL value, no record of the change is made. +** +** The session object therefore accumulates two types of records - those +** that consist of primary key values only (created when the user inserts +** a new record) and those that consist of the primary key values and the +** original values of other table columns (created when the users deletes +** or updates a record). +** +** When this function is called, the requested changeset is created using +** both the accumulated records and the current contents of the database +** file. Specifically: +** +**
      +**
    • For each record generated by an insert, the database is queried +** for a row with a matching primary key. If one is found, an INSERT +** change is added to the changeset. If no such row is found, no change +** is added to the changeset. +** +**
    • For each record generated by an update or delete, the database is +** queried for a row with a matching primary key. If such a row is +** found and one or more of the non-primary key fields have been +** modified from their original values, an UPDATE change is added to +** the changeset. Or, if no such row is found in the table, a DELETE +** change is added to the changeset. If there is a row with a matching +** primary key in the database, but all fields contain their original +** values, no change is added to the changeset. +**
    +** +** This means, amongst other things, that if a row is inserted and then later +** deleted while a session object is active, neither the insert nor the delete +** will be present in the changeset. Or if a row is deleted and then later a +** row with the same primary key values inserted while a session object is +** active, the resulting changeset will contain an UPDATE change instead of +** a DELETE and an INSERT. +** +** When a session object is disabled (see the [sqlite3session_enable()] API), +** it does not accumulate records when rows are inserted, updated or deleted. +** This may appear to have some counter-intuitive effects if a single row +** is written to more than once during a session. For example, if a row +** is inserted while a session object is enabled, then later deleted while +** the same session object is disabled, no INSERT record will appear in the +** changeset, even though the delete took place while the session was disabled. +** Or, if one field of a row is updated while a session is disabled, and +** another field of the same row is updated while the session is enabled, the +** resulting changeset will contain an UPDATE change that updates both fields. +*/ +SQLITE_API int sqlite3session_changeset( + sqlite3_session *pSession, /* Session object */ + int *pnChangeset, /* OUT: Size of buffer at *ppChangeset */ + void **ppChangeset /* OUT: Buffer containing changeset */ +); + +/* +** CAPI3REF: Load The Difference Between Tables Into A Session +** +** If it is not already attached to the session object passed as the first +** argument, this function attaches table zTbl in the same manner as the +** [sqlite3session_attach()] function. If zTbl does not exist, or if it +** does not have a primary key, this function is a no-op (but does not return +** an error). +** +** Argument zFromDb must be the name of a database ("main", "temp" etc.) +** attached to the same database handle as the session object that contains +** a table compatible with the table attached to the session by this function. +** A table is considered compatible if it: +** +**
      +**
    • Has the same name, +**
    • Has the same set of columns declared in the same order, and +**
    • Has the same PRIMARY KEY definition. +**
    +** +** If the tables are not compatible, SQLITE_SCHEMA is returned. If the tables +** are compatible but do not have any PRIMARY KEY columns, it is not an error +** but no changes are added to the session object. As with other session +** APIs, tables without PRIMARY KEYs are simply ignored. +** +** This function adds a set of changes to the session object that could be +** used to update the table in database zFrom (call this the "from-table") +** so that its content is the same as the table attached to the session +** object (call this the "to-table"). Specifically: +** +**
      +**
    • For each row (primary key) that exists in the to-table but not in +** the from-table, an INSERT record is added to the session object. +** +**
    • For each row (primary key) that exists in the to-table but not in +** the from-table, a DELETE record is added to the session object. +** +**
    • For each row (primary key) that exists in both tables, but features +** different non-PK values in each, an UPDATE record is added to the +** session. +**
    +** +** To clarify, if this function is called and then a changeset constructed +** using [sqlite3session_changeset()], then after applying that changeset to +** database zFrom the contents of the two compatible tables would be +** identical. +** +** It an error if database zFrom does not exist or does not contain the +** required compatible table. +** +** If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite +** error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg +** may be set to point to a buffer containing an English language error +** message. It is the responsibility of the caller to free this buffer using +** sqlite3_free(). +*/ +SQLITE_API int sqlite3session_diff( + sqlite3_session *pSession, + const char *zFromDb, + const char *zTbl, + char **pzErrMsg +); + + +/* +** CAPI3REF: Generate A Patchset From A Session Object +** +** The differences between a patchset and a changeset are that: +** +**
      +**
    • DELETE records consist of the primary key fields only. The +** original values of other fields are omitted. +**
    • The original values of any modified fields are omitted from +** UPDATE records. +**
    +** +** A patchset blob may be used with up to date versions of all +** sqlite3changeset_xxx API functions except for sqlite3changeset_invert(), +** which returns SQLITE_CORRUPT if it is passed a patchset. Similarly, +** attempting to use a patchset blob with old versions of the +** sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error. +** +** Because the non-primary key "old.*" fields are omitted, no +** SQLITE_CHANGESET_DATA conflicts can be detected or reported if a patchset +** is passed to the sqlite3changeset_apply() API. Other conflict types work +** in the same way as for changesets. +** +** Changes within a patchset are ordered in the same way as for changesets +** generated by the sqlite3session_changeset() function (i.e. all changes for +** a single table are grouped together, tables appear in the order in which +** they were attached to the session object). +*/ +SQLITE_API int sqlite3session_patchset( + sqlite3_session *pSession, /* Session object */ + int *pnPatchset, /* OUT: Size of buffer at *ppChangeset */ + void **ppPatchset /* OUT: Buffer containing changeset */ +); + +/* +** CAPI3REF: Test if a changeset has recorded any changes. +** +** Return non-zero if no changes to attached tables have been recorded by +** the session object passed as the first argument. Otherwise, if one or +** more changes have been recorded, return zero. +** +** Even if this function returns zero, it is possible that calling +** [sqlite3session_changeset()] on the session handle may still return a +** changeset that contains no changes. This can happen when a row in +** an attached table is modified and then later on the original values +** are restored. However, if this function returns non-zero, then it is +** guaranteed that a call to sqlite3session_changeset() will return a +** changeset containing zero changes. +*/ +SQLITE_API int sqlite3session_isempty(sqlite3_session *pSession); + +/* +** CAPI3REF: Create An Iterator To Traverse A Changeset +** +** Create an iterator used to iterate through the contents of a changeset. +** If successful, *pp is set to point to the iterator handle and SQLITE_OK +** is returned. Otherwise, if an error occurs, *pp is set to zero and an +** SQLite error code is returned. +** +** The following functions can be used to advance and query a changeset +** iterator created by this function: +** +**
      +**
    • [sqlite3changeset_next()] +**
    • [sqlite3changeset_op()] +**
    • [sqlite3changeset_new()] +**
    • [sqlite3changeset_old()] +**
    +** +** It is the responsibility of the caller to eventually destroy the iterator +** by passing it to [sqlite3changeset_finalize()]. The buffer containing the +** changeset (pChangeset) must remain valid until after the iterator is +** destroyed. +** +** Assuming the changeset blob was created by one of the +** [sqlite3session_changeset()], [sqlite3changeset_concat()] or +** [sqlite3changeset_invert()] functions, all changes within the changeset +** that apply to a single table are grouped together. This means that when +** an application iterates through a changeset using an iterator created by +** this function, all changes that relate to a single table are visited +** consecutively. There is no chance that the iterator will visit a change +** the applies to table X, then one for table Y, and then later on visit +** another change for table X. +*/ +SQLITE_API int sqlite3changeset_start( + sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */ + int nChangeset, /* Size of changeset blob in bytes */ + void *pChangeset /* Pointer to blob containing changeset */ +); + + +/* +** CAPI3REF: Advance A Changeset Iterator +** +** This function may only be used with iterators created by function +** [sqlite3changeset_start()]. If it is called on an iterator passed to +** a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE +** is returned and the call has no effect. +** +** Immediately after an iterator is created by sqlite3changeset_start(), it +** does not point to any change in the changeset. Assuming the changeset +** is not empty, the first call to this function advances the iterator to +** point to the first change in the changeset. Each subsequent call advances +** the iterator to point to the next change in the changeset (if any). If +** no error occurs and the iterator points to a valid change after a call +** to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned. +** Otherwise, if all changes in the changeset have already been visited, +** SQLITE_DONE is returned. +** +** If an error occurs, an SQLite error code is returned. Possible error +** codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or +** SQLITE_NOMEM. +*/ +SQLITE_API int sqlite3changeset_next(sqlite3_changeset_iter *pIter); + +/* +** CAPI3REF: Obtain The Current Operation From A Changeset Iterator +** +** The pIter argument passed to this function may either be an iterator +** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator +** created by [sqlite3changeset_start()]. In the latter case, the most recent +** call to [sqlite3changeset_next()] must have returned [SQLITE_ROW]. If this +** is not the case, this function returns [SQLITE_MISUSE]. +** +** If argument pzTab is not NULL, then *pzTab is set to point to a +** nul-terminated utf-8 encoded string containing the name of the table +** affected by the current change. The buffer remains valid until either +** sqlite3changeset_next() is called on the iterator or until the +** conflict-handler function returns. If pnCol is not NULL, then *pnCol is +** set to the number of columns in the table affected by the change. If +** pbIncorrect is not NULL, then *pbIndirect is set to true (1) if the change +** is an indirect change, or false (0) otherwise. See the documentation for +** [sqlite3session_indirect()] for a description of direct and indirect +** changes. Finally, if pOp is not NULL, then *pOp is set to one of +** [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the +** type of change that the iterator currently points to. +** +** If no error occurs, SQLITE_OK is returned. If an error does occur, an +** SQLite error code is returned. The values of the output variables may not +** be trusted in this case. +*/ +SQLITE_API int sqlite3changeset_op( + sqlite3_changeset_iter *pIter, /* Iterator object */ + const char **pzTab, /* OUT: Pointer to table name */ + int *pnCol, /* OUT: Number of columns in table */ + int *pOp, /* OUT: SQLITE_INSERT, DELETE or UPDATE */ + int *pbIndirect /* OUT: True for an 'indirect' change */ +); + +/* +** CAPI3REF: Obtain The Primary Key Definition Of A Table +** +** For each modified table, a changeset includes the following: +** +**
      +**
    • The number of columns in the table, and +**
    • Which of those columns make up the tables PRIMARY KEY. +**
    +** +** This function is used to find which columns comprise the PRIMARY KEY of +** the table modified by the change that iterator pIter currently points to. +** If successful, *pabPK is set to point to an array of nCol entries, where +** nCol is the number of columns in the table. Elements of *pabPK are set to +** 0x01 if the corresponding column is part of the tables primary key, or +** 0x00 if it is not. +** +** If argument pnCol is not NULL, then *pnCol is set to the number of columns +** in the table. +** +** If this function is called when the iterator does not point to a valid +** entry, SQLITE_MISUSE is returned and the output variables zeroed. Otherwise, +** SQLITE_OK is returned and the output variables populated as described +** above. +*/ +SQLITE_API int sqlite3changeset_pk( + sqlite3_changeset_iter *pIter, /* Iterator object */ + unsigned char **pabPK, /* OUT: Array of boolean - true for PK cols */ + int *pnCol /* OUT: Number of entries in output array */ +); + +/* +** CAPI3REF: Obtain old.* Values From A Changeset Iterator +** +** The pIter argument passed to this function may either be an iterator +** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator +** created by [sqlite3changeset_start()]. In the latter case, the most recent +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** Furthermore, it may only be called if the type of change that the iterator +** currently points to is either [SQLITE_DELETE] or [SQLITE_UPDATE]. Otherwise, +** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. +** +** Argument iVal must be greater than or equal to 0, and less than the number +** of columns in the table affected by the current change. Otherwise, +** [SQLITE_RANGE] is returned and *ppValue is set to NULL. +** +** If successful, this function sets *ppValue to point to a protected +** sqlite3_value object containing the iVal'th value from the vector of +** original row values stored as part of the UPDATE or DELETE change and +** returns SQLITE_OK. The name of the function comes from the fact that this +** is similar to the "old.*" columns available to update or delete triggers. +** +** If some other error occurs (e.g. an OOM condition), an SQLite error code +** is returned and *ppValue is set to NULL. +*/ +SQLITE_API int sqlite3changeset_old( + sqlite3_changeset_iter *pIter, /* Changeset iterator */ + int iVal, /* Column number */ + sqlite3_value **ppValue /* OUT: Old value (or NULL pointer) */ +); + +/* +** CAPI3REF: Obtain new.* Values From A Changeset Iterator +** +** The pIter argument passed to this function may either be an iterator +** passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator +** created by [sqlite3changeset_start()]. In the latter case, the most recent +** call to [sqlite3changeset_next()] must have returned SQLITE_ROW. +** Furthermore, it may only be called if the type of change that the iterator +** currently points to is either [SQLITE_UPDATE] or [SQLITE_INSERT]. Otherwise, +** this function returns [SQLITE_MISUSE] and sets *ppValue to NULL. +** +** Argument iVal must be greater than or equal to 0, and less than the number +** of columns in the table affected by the current change. Otherwise, +** [SQLITE_RANGE] is returned and *ppValue is set to NULL. +** +** If successful, this function sets *ppValue to point to a protected +** sqlite3_value object containing the iVal'th value from the vector of +** new row values stored as part of the UPDATE or INSERT change and +** returns SQLITE_OK. If the change is an UPDATE and does not include +** a new value for the requested column, *ppValue is set to NULL and +** SQLITE_OK returned. The name of the function comes from the fact that +** this is similar to the "new.*" columns available to update or delete +** triggers. +** +** If some other error occurs (e.g. an OOM condition), an SQLite error code +** is returned and *ppValue is set to NULL. +*/ +SQLITE_API int sqlite3changeset_new( + sqlite3_changeset_iter *pIter, /* Changeset iterator */ + int iVal, /* Column number */ + sqlite3_value **ppValue /* OUT: New value (or NULL pointer) */ +); + +/* +** CAPI3REF: Obtain Conflicting Row Values From A Changeset Iterator +** +** This function should only be used with iterator objects passed to a +** conflict-handler callback by [sqlite3changeset_apply()] with either +** [SQLITE_CHANGESET_DATA] or [SQLITE_CHANGESET_CONFLICT]. If this function +** is called on any other iterator, [SQLITE_MISUSE] is returned and *ppValue +** is set to NULL. +** +** Argument iVal must be greater than or equal to 0, and less than the number +** of columns in the table affected by the current change. Otherwise, +** [SQLITE_RANGE] is returned and *ppValue is set to NULL. +** +** If successful, this function sets *ppValue to point to a protected +** sqlite3_value object containing the iVal'th value from the +** "conflicting row" associated with the current conflict-handler callback +** and returns SQLITE_OK. +** +** If some other error occurs (e.g. an OOM condition), an SQLite error code +** is returned and *ppValue is set to NULL. +*/ +SQLITE_API int sqlite3changeset_conflict( + sqlite3_changeset_iter *pIter, /* Changeset iterator */ + int iVal, /* Column number */ + sqlite3_value **ppValue /* OUT: Value from conflicting row */ +); + +/* +** CAPI3REF: Determine The Number Of Foreign Key Constraint Violations +** +** This function may only be called with an iterator passed to an +** SQLITE_CHANGESET_FOREIGN_KEY conflict handler callback. In this case +** it sets the output variable to the total number of known foreign key +** violations in the destination database and returns SQLITE_OK. +** +** In all other cases this function returns SQLITE_MISUSE. +*/ +SQLITE_API int sqlite3changeset_fk_conflicts( + sqlite3_changeset_iter *pIter, /* Changeset iterator */ + int *pnOut /* OUT: Number of FK violations */ +); + + +/* +** CAPI3REF: Finalize A Changeset Iterator +** +** This function is used to finalize an iterator allocated with +** [sqlite3changeset_start()]. +** +** This function should only be called on iterators created using the +** [sqlite3changeset_start()] function. If an application calls this +** function with an iterator passed to a conflict-handler by +** [sqlite3changeset_apply()], [SQLITE_MISUSE] is immediately returned and the +** call has no effect. +** +** If an error was encountered within a call to an sqlite3changeset_xxx() +** function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an +** [SQLITE_NOMEM] in [sqlite3changeset_new()]) then an error code corresponding +** to that error is returned by this function. Otherwise, SQLITE_OK is +** returned. This is to allow the following pattern (pseudo-code): +** +** sqlite3changeset_start(); +** while( SQLITE_ROW==sqlite3changeset_next() ){ +** // Do something with change. +** } +** rc = sqlite3changeset_finalize(); +** if( rc!=SQLITE_OK ){ +** // An error has occurred +** } +*/ +SQLITE_API int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter); + +/* +** CAPI3REF: Invert A Changeset +** +** This function is used to "invert" a changeset object. Applying an inverted +** changeset to a database reverses the effects of applying the uninverted +** changeset. Specifically: +** +**
      +**
    • Each DELETE change is changed to an INSERT, and +**
    • Each INSERT change is changed to a DELETE, and +**
    • For each UPDATE change, the old.* and new.* values are exchanged. +**
    +** +** This function does not change the order in which changes appear within +** the changeset. It merely reverses the sense of each individual change. +** +** If successful, a pointer to a buffer containing the inverted changeset +** is stored in *ppOut, the size of the same buffer is stored in *pnOut, and +** SQLITE_OK is returned. If an error occurs, both *pnOut and *ppOut are +** zeroed and an SQLite error code returned. +** +** It is the responsibility of the caller to eventually call sqlite3_free() +** on the *ppOut pointer to free the buffer allocation following a successful +** call to this function. +** +** WARNING/TODO: This function currently assumes that the input is a valid +** changeset. If it is not, the results are undefined. +*/ +SQLITE_API int sqlite3changeset_invert( + int nIn, const void *pIn, /* Input changeset */ + int *pnOut, void **ppOut /* OUT: Inverse of input */ +); + +/* +** CAPI3REF: Concatenate Two Changeset Objects +** +** This function is used to concatenate two changesets, A and B, into a +** single changeset. The result is a changeset equivalent to applying +** changeset A followed by changeset B. +** +** This function combines the two input changesets using an +** sqlite3_changegroup object. Calling it produces similar results as the +** following code fragment: +** +** sqlite3_changegroup *pGrp; +** rc = sqlite3_changegroup_new(&pGrp); +** if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nA, pA); +** if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nB, pB); +** if( rc==SQLITE_OK ){ +** rc = sqlite3changegroup_output(pGrp, pnOut, ppOut); +** }else{ +** *ppOut = 0; +** *pnOut = 0; +** } +** +** Refer to the sqlite3_changegroup documentation below for details. +*/ +SQLITE_API int sqlite3changeset_concat( + int nA, /* Number of bytes in buffer pA */ + void *pA, /* Pointer to buffer containing changeset A */ + int nB, /* Number of bytes in buffer pB */ + void *pB, /* Pointer to buffer containing changeset B */ + int *pnOut, /* OUT: Number of bytes in output changeset */ + void **ppOut /* OUT: Buffer containing output changeset */ +); + + +/* +** CAPI3REF: Changegroup Handle +*/ +typedef struct sqlite3_changegroup sqlite3_changegroup; + +/* +** CAPI3REF: Create A New Changegroup Object +** +** An sqlite3_changegroup object is used to combine two or more changesets +** (or patchsets) into a single changeset (or patchset). A single changegroup +** object may combine changesets or patchsets, but not both. The output is +** always in the same format as the input. +** +** If successful, this function returns SQLITE_OK and populates (*pp) with +** a pointer to a new sqlite3_changegroup object before returning. The caller +** should eventually free the returned object using a call to +** sqlite3changegroup_delete(). If an error occurs, an SQLite error code +** (i.e. SQLITE_NOMEM) is returned and *pp is set to NULL. +** +** The usual usage pattern for an sqlite3_changegroup object is as follows: +** +**
      +**
    • It is created using a call to sqlite3changegroup_new(). +** +**
    • Zero or more changesets (or patchsets) are added to the object +** by calling sqlite3changegroup_add(). +** +**
    • The result of combining all input changesets together is obtained +** by the application via a call to sqlite3changegroup_output(). +** +**
    • The object is deleted using a call to sqlite3changegroup_delete(). +**
    +** +** Any number of calls to add() and output() may be made between the calls to +** new() and delete(), and in any order. +** +** As well as the regular sqlite3changegroup_add() and +** sqlite3changegroup_output() functions, also available are the streaming +** versions sqlite3changegroup_add_strm() and sqlite3changegroup_output_strm(). +*/ +int sqlite3changegroup_new(sqlite3_changegroup **pp); + +/* +** CAPI3REF: Add A Changeset To A Changegroup +** +** Add all changes within the changeset (or patchset) in buffer pData (size +** nData bytes) to the changegroup. +** +** If the buffer contains a patchset, then all prior calls to this function +** on the same changegroup object must also have specified patchsets. Or, if +** the buffer contains a changeset, so must have the earlier calls to this +** function. Otherwise, SQLITE_ERROR is returned and no changes are added +** to the changegroup. +** +** Rows within the changeset and changegroup are identified by the values in +** their PRIMARY KEY columns. A change in the changeset is considered to +** apply to the same row as a change already present in the changegroup if +** the two rows have the same primary key. +** +** Changes to rows that do not already appear in the changegroup are +** simply copied into it. Or, if both the new changeset and the changegroup +** contain changes that apply to a single row, the final contents of the +** changegroup depends on the type of each change, as follows: +** +** +** +** +**
    Existing Change New Change Output Change +**
    INSERT INSERT +** The new change is ignored. This case does not occur if the new +** changeset was recorded immediately after the changesets already +** added to the changegroup. +**
    INSERT UPDATE +** The INSERT change remains in the changegroup. The values in the +** INSERT change are modified as if the row was inserted by the +** existing change and then updated according to the new change. +**
    INSERT DELETE +** The existing INSERT is removed from the changegroup. The DELETE is +** not added. +**
    UPDATE INSERT +** The new change is ignored. This case does not occur if the new +** changeset was recorded immediately after the changesets already +** added to the changegroup. +**
    UPDATE UPDATE +** The existing UPDATE remains within the changegroup. It is amended +** so that the accompanying values are as if the row was updated once +** by the existing change and then again by the new change. +**
    UPDATE DELETE +** The existing UPDATE is replaced by the new DELETE within the +** changegroup. +**
    DELETE INSERT +** If one or more of the column values in the row inserted by the +** new change differ from those in the row deleted by the existing +** change, the existing DELETE is replaced by an UPDATE within the +** changegroup. Otherwise, if the inserted row is exactly the same +** as the deleted row, the existing DELETE is simply discarded. +**
    DELETE UPDATE +** The new change is ignored. This case does not occur if the new +** changeset was recorded immediately after the changesets already +** added to the changegroup. +**
    DELETE DELETE +** The new change is ignored. This case does not occur if the new +** changeset was recorded immediately after the changesets already +** added to the changegroup. +**
    +** +** If the new changeset contains changes to a table that is already present +** in the changegroup, then the number of columns and the position of the +** primary key columns for the table must be consistent. If this is not the +** case, this function fails with SQLITE_SCHEMA. If the input changeset +** appears to be corrupt and the corruption is detected, SQLITE_CORRUPT is +** returned. Or, if an out-of-memory condition occurs during processing, this +** function returns SQLITE_NOMEM. In all cases, if an error occurs the +** final contents of the changegroup is undefined. +** +** If no error occurs, SQLITE_OK is returned. +*/ +int sqlite3changegroup_add(sqlite3_changegroup*, int nData, void *pData); + +/* +** CAPI3REF: Obtain A Composite Changeset From A Changegroup +** +** Obtain a buffer containing a changeset (or patchset) representing the +** current contents of the changegroup. If the inputs to the changegroup +** were themselves changesets, the output is a changeset. Or, if the +** inputs were patchsets, the output is also a patchset. +** +** As with the output of the sqlite3session_changeset() and +** sqlite3session_patchset() functions, all changes related to a single +** table are grouped together in the output of this function. Tables appear +** in the same order as for the very first changeset added to the changegroup. +** If the second or subsequent changesets added to the changegroup contain +** changes for tables that do not appear in the first changeset, they are +** appended onto the end of the output changeset, again in the order in +** which they are first encountered. +** +** If an error occurs, an SQLite error code is returned and the output +** variables (*pnData) and (*ppData) are set to 0. Otherwise, SQLITE_OK +** is returned and the output variables are set to the size of and a +** pointer to the output buffer, respectively. In this case it is the +** responsibility of the caller to eventually free the buffer using a +** call to sqlite3_free(). +*/ +int sqlite3changegroup_output( + sqlite3_changegroup*, + int *pnData, /* OUT: Size of output buffer in bytes */ + void **ppData /* OUT: Pointer to output buffer */ +); + +/* +** CAPI3REF: Delete A Changegroup Object +*/ +void sqlite3changegroup_delete(sqlite3_changegroup*); + +/* +** CAPI3REF: Apply A Changeset To A Database +** +** Apply a changeset to a database. This function attempts to update the +** "main" database attached to handle db with the changes found in the +** changeset passed via the second and third arguments. +** +** The fourth argument (xFilter) passed to this function is the "filter +** callback". If it is not NULL, then for each table affected by at least one +** change in the changeset, the filter callback is invoked with +** the table name as the second argument, and a copy of the context pointer +** passed as the sixth argument to this function as the first. If the "filter +** callback" returns zero, then no attempt is made to apply any changes to +** the table. Otherwise, if the return value is non-zero or the xFilter +** argument to this function is NULL, all changes related to the table are +** attempted. +** +** For each table that is not excluded by the filter callback, this function +** tests that the target database contains a compatible table. A table is +** considered compatible if all of the following are true: +** +**
      +**
    • The table has the same name as the name recorded in the +** changeset, and +**
    • The table has at least as many columns as recorded in the +** changeset, and +**
    • The table has primary key columns in the same position as +** recorded in the changeset. +**
    +** +** If there is no compatible table, it is not an error, but none of the +** changes associated with the table are applied. A warning message is issued +** via the sqlite3_log() mechanism with the error code SQLITE_SCHEMA. At most +** one such warning is issued for each table in the changeset. +** +** For each change for which there is a compatible table, an attempt is made +** to modify the table contents according to the UPDATE, INSERT or DELETE +** change. If a change cannot be applied cleanly, the conflict handler +** function passed as the fifth argument to sqlite3changeset_apply() may be +** invoked. A description of exactly when the conflict handler is invoked for +** each type of change is below. +** +** Unlike the xFilter argument, xConflict may not be passed NULL. The results +** of passing anything other than a valid function pointer as the xConflict +** argument are undefined. +** +** Each time the conflict handler function is invoked, it must return one +** of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or +** [SQLITE_CHANGESET_REPLACE]. SQLITE_CHANGESET_REPLACE may only be returned +** if the second argument passed to the conflict handler is either +** SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If the conflict-handler +** returns an illegal value, any changes already made are rolled back and +** the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different +** actions are taken by sqlite3changeset_apply() depending on the value +** returned by each invocation of the conflict-handler function. Refer to +** the documentation for the three +** [SQLITE_CHANGESET_OMIT|available return values] for details. +** +**
    +**
    DELETE Changes
    +** For each DELETE change, this function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values +** stored in all non-primary key columns also match the values stored in +** the changeset the row is deleted from the target database. +** +** If a row with matching primary key values is found, but one or more of +** the non-primary key fields contains a value different from the original +** row value stored in the changeset, the conflict-handler function is +** invoked with [SQLITE_CHANGESET_DATA] as the second argument. If the +** database table has more columns than are recorded in the changeset, +** only the values of those non-primary key fields are compared against +** the current database contents - any trailing database table columns +** are ignored. +** +** If no row with matching primary key values is found in the database, +** the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND] +** passed as the second argument. +** +** If the DELETE operation is attempted, but SQLite returns SQLITE_CONSTRAINT +** (which can only happen if a foreign key constraint is violated), the +** conflict-handler function is invoked with [SQLITE_CHANGESET_CONSTRAINT] +** passed as the second argument. This includes the case where the DELETE +** operation is attempted because an earlier call to the conflict handler +** function returned [SQLITE_CHANGESET_REPLACE]. +** +**
    INSERT Changes
    +** For each INSERT change, an attempt is made to insert the new row into +** the database. If the changeset row contains fewer fields than the +** database table, the trailing fields are populated with their default +** values. +** +** If the attempt to insert the row fails because the database already +** contains a row with the same primary key values, the conflict handler +** function is invoked with the second argument set to +** [SQLITE_CHANGESET_CONFLICT]. +** +** If the attempt to insert the row fails because of some other constraint +** violation (e.g. NOT NULL or UNIQUE), the conflict handler function is +** invoked with the second argument set to [SQLITE_CHANGESET_CONSTRAINT]. +** This includes the case where the INSERT operation is re-attempted because +** an earlier call to the conflict handler function returned +** [SQLITE_CHANGESET_REPLACE]. +** +**
    UPDATE Changes
    +** For each UPDATE change, this function checks if the target database +** contains a row with the same primary key value (or values) as the +** original row values stored in the changeset. If it does, and the values +** stored in all modified non-primary key columns also match the values +** stored in the changeset the row is updated within the target database. +** +** If a row with matching primary key values is found, but one or more of +** the modified non-primary key fields contains a value different from an +** original row value stored in the changeset, the conflict-handler function +** is invoked with [SQLITE_CHANGESET_DATA] as the second argument. Since +** UPDATE changes only contain values for non-primary key fields that are +** to be modified, only those fields need to match the original values to +** avoid the SQLITE_CHANGESET_DATA conflict-handler callback. +** +** If no row with matching primary key values is found in the database, +** the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND] +** passed as the second argument. +** +** If the UPDATE operation is attempted, but SQLite returns +** SQLITE_CONSTRAINT, the conflict-handler function is invoked with +** [SQLITE_CHANGESET_CONSTRAINT] passed as the second argument. +** This includes the case where the UPDATE operation is attempted after +** an earlier call to the conflict handler function returned +** [SQLITE_CHANGESET_REPLACE]. +**
    +** +** It is safe to execute SQL statements, including those that write to the +** table that the callback related to, from within the xConflict callback. +** This can be used to further customize the applications conflict +** resolution strategy. +** +** All changes made by this function are enclosed in a savepoint transaction. +** If any other error (aside from a constraint failure when attempting to +** write to the target database) occurs, then the savepoint transaction is +** rolled back, restoring the target database to its original state, and an +** SQLite error code returned. +*/ +SQLITE_API int sqlite3changeset_apply( + sqlite3 *db, /* Apply change to "main" db of this handle */ + int nChangeset, /* Size of changeset in bytes */ + void *pChangeset, /* Changeset blob */ + int(*xFilter)( + void *pCtx, /* Copy of sixth arg to _apply() */ + const char *zTab /* Table name */ + ), + int(*xConflict)( + void *pCtx, /* Copy of sixth arg to _apply() */ + int eConflict, /* DATA, MISSING, CONFLICT, CONSTRAINT */ + sqlite3_changeset_iter *p /* Handle describing change and conflict */ + ), + void *pCtx /* First argument passed to xConflict */ +); + +/* +** CAPI3REF: Constants Passed To The Conflict Handler +** +** Values that may be passed as the second argument to a conflict-handler. +** +**
    +**
    SQLITE_CHANGESET_DATA
    +** The conflict handler is invoked with CHANGESET_DATA as the second argument +** when processing a DELETE or UPDATE change if a row with the required +** PRIMARY KEY fields is present in the database, but one or more other +** (non primary-key) fields modified by the update do not contain the +** expected "before" values. +** +** The conflicting row, in this case, is the database row with the matching +** primary key. +** +**
    SQLITE_CHANGESET_NOTFOUND
    +** The conflict handler is invoked with CHANGESET_NOTFOUND as the second +** argument when processing a DELETE or UPDATE change if a row with the +** required PRIMARY KEY fields is not present in the database. +** +** There is no conflicting row in this case. The results of invoking the +** sqlite3changeset_conflict() API are undefined. +** +**
    SQLITE_CHANGESET_CONFLICT
    +** CHANGESET_CONFLICT is passed as the second argument to the conflict +** handler while processing an INSERT change if the operation would result +** in duplicate primary key values. +** +** The conflicting row in this case is the database row with the matching +** primary key. +** +**
    SQLITE_CHANGESET_FOREIGN_KEY
    +** If foreign key handling is enabled, and applying a changeset leaves the +** database in a state containing foreign key violations, the conflict +** handler is invoked with CHANGESET_FOREIGN_KEY as the second argument +** exactly once before the changeset is committed. If the conflict handler +** returns CHANGESET_OMIT, the changes, including those that caused the +** foreign key constraint violation, are committed. Or, if it returns +** CHANGESET_ABORT, the changeset is rolled back. +** +** No current or conflicting row information is provided. The only function +** it is possible to call on the supplied sqlite3_changeset_iter handle +** is sqlite3changeset_fk_conflicts(). +** +**
    SQLITE_CHANGESET_CONSTRAINT
    +** If any other constraint violation occurs while applying a change (i.e. +** a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is +** invoked with CHANGESET_CONSTRAINT as the second argument. +** +** There is no conflicting row in this case. The results of invoking the +** sqlite3changeset_conflict() API are undefined. +** +**
    +*/ +#define SQLITE_CHANGESET_DATA 1 +#define SQLITE_CHANGESET_NOTFOUND 2 +#define SQLITE_CHANGESET_CONFLICT 3 +#define SQLITE_CHANGESET_CONSTRAINT 4 +#define SQLITE_CHANGESET_FOREIGN_KEY 5 + +/* +** CAPI3REF: Constants Returned By The Conflict Handler +** +** A conflict handler callback must return one of the following three values. +** +**
    +**
    SQLITE_CHANGESET_OMIT
    +** If a conflict handler returns this value no special action is taken. The +** change that caused the conflict is not applied. The session module +** continues to the next change in the changeset. +** +**
    SQLITE_CHANGESET_REPLACE
    +** This value may only be returned if the second argument to the conflict +** handler was SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If this +** is not the case, any changes applied so far are rolled back and the +** call to sqlite3changeset_apply() returns SQLITE_MISUSE. +** +** If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_DATA conflict +** handler, then the conflicting row is either updated or deleted, depending +** on the type of change. +** +** If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_CONFLICT conflict +** handler, then the conflicting row is removed from the database and a +** second attempt to apply the change is made. If this second attempt fails, +** the original row is restored to the database before continuing. +** +**
    SQLITE_CHANGESET_ABORT
    +** If this value is returned, any changes applied so far are rolled back +** and the call to sqlite3changeset_apply() returns SQLITE_ABORT. +**
    +*/ +#define SQLITE_CHANGESET_OMIT 0 +#define SQLITE_CHANGESET_REPLACE 1 +#define SQLITE_CHANGESET_ABORT 2 + +/* +** CAPI3REF: Streaming Versions of API functions. +** +** The six streaming API xxx_strm() functions serve similar purposes to the +** corresponding non-streaming API functions: +** +** +** +**
    Streaming functionNon-streaming equivalent
    sqlite3changeset_apply_str[sqlite3changeset_apply] +**
    sqlite3changeset_concat_str[sqlite3changeset_concat] +**
    sqlite3changeset_invert_str[sqlite3changeset_invert] +**
    sqlite3changeset_start_str[sqlite3changeset_start] +**
    sqlite3session_changeset_str[sqlite3session_changeset] +**
    sqlite3session_patchset_str[sqlite3session_patchset] +**
    +** +** Non-streaming functions that accept changesets (or patchsets) as input +** require that the entire changeset be stored in a single buffer in memory. +** Similarly, those that return a changeset or patchset do so by returning +** a pointer to a single large buffer allocated using sqlite3_malloc(). +** Normally this is convenient. However, if an application running in a +** low-memory environment is required to handle very large changesets, the +** large contiguous memory allocations required can become onerous. +** +** In order to avoid this problem, instead of a single large buffer, input +** is passed to a streaming API functions by way of a callback function that +** the sessions module invokes to incrementally request input data as it is +** required. In all cases, a pair of API function parameters such as +** +** 
    +**        int nChangeset,
+**        void *pChangeset,
+**
    +** +** Is replaced by: +** +** 
    +**        int (*xInput)(void *pIn, void *pData, int *pnData),
+**        void *pIn,
+**
    +** +** Each time the xInput callback is invoked by the sessions module, the first +** argument passed is a copy of the supplied pIn context pointer. The second +** argument, pData, points to a buffer (*pnData) bytes in size. Assuming no +** error occurs the xInput method should copy up to (*pnData) bytes of data +** into the buffer and set (*pnData) to the actual number of bytes copied +** before returning SQLITE_OK. If the input is completely exhausted, (*pnData) +** should be set to zero to indicate this. Or, if an error occurs, an SQLite +** error code should be returned. In all cases, if an xInput callback returns +** an error, all processing is abandoned and the streaming API function +** returns a copy of the error code to the caller. +** +** In the case of sqlite3changeset_start_strm(), the xInput callback may be +** invoked by the sessions module at any point during the lifetime of the +** iterator. If such an xInput callback returns an error, the iterator enters +** an error state, whereby all subsequent calls to iterator functions +** immediately fail with the same error code as returned by xInput. +** +** Similarly, streaming API functions that return changesets (or patchsets) +** return them in chunks by way of a callback function instead of via a +** pointer to a single large buffer. In this case, a pair of parameters such +** as: +** +** 
    +**        int *pnChangeset,
+**        void **ppChangeset,
+**
    +** +** Is replaced by: +** +** 
    +**        int (*xOutput)(void *pOut, const void *pData, int nData),
+**        void *pOut
+**
    +** +** The xOutput callback is invoked zero or more times to return data to +** the application. The first parameter passed to each call is a copy of the +** pOut pointer supplied by the application. The second parameter, pData, +** points to a buffer nData bytes in size containing the chunk of output +** data being returned. If the xOutput callback successfully processes the +** supplied data, it should return SQLITE_OK to indicate success. Otherwise, +** it should return some other SQLite error code. In this case processing +** is immediately abandoned and the streaming API function returns a copy +** of the xOutput error code to the application. +** +** The sessions module never invokes an xOutput callback with the third +** parameter set to a value less than or equal to zero. Other than this, +** no guarantees are made as to the size of the chunks of data returned. +*/ +SQLITE_API int sqlite3changeset_apply_strm( + sqlite3 *db, /* Apply change to "main" db of this handle */ + int (*xInput)(void *pIn, void *pData, int *pnData), /* Input function */ + void *pIn, /* First arg for xInput */ + int(*xFilter)( + void *pCtx, /* Copy of sixth arg to _apply() */ + const char *zTab /* Table name */ + ), + int(*xConflict)( + void *pCtx, /* Copy of sixth arg to _apply() */ + int eConflict, /* DATA, MISSING, CONFLICT, CONSTRAINT */ + sqlite3_changeset_iter *p /* Handle describing change and conflict */ + ), + void *pCtx /* First argument passed to xConflict */ +); +SQLITE_API int sqlite3changeset_concat_strm( + int (*xInputA)(void *pIn, void *pData, int *pnData), + void *pInA, + int (*xInputB)(void *pIn, void *pData, int *pnData), + void *pInB, + int (*xOutput)(void *pOut, const void *pData, int nData), + void *pOut +); +SQLITE_API int sqlite3changeset_invert_strm( + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn, + int (*xOutput)(void *pOut, const void *pData, int nData), + void *pOut +); +SQLITE_API int sqlite3changeset_start_strm( + sqlite3_changeset_iter **pp, + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn +); +SQLITE_API int sqlite3session_changeset_strm( + sqlite3_session *pSession, + int (*xOutput)(void *pOut, const void *pData, int nData), + void *pOut +); +SQLITE_API int sqlite3session_patchset_strm( + sqlite3_session *pSession, + int (*xOutput)(void *pOut, const void *pData, int nData), + void *pOut +); +int sqlite3changegroup_add_strm(sqlite3_changegroup*, + int (*xInput)(void *pIn, void *pData, int *pnData), + void *pIn +); +int sqlite3changegroup_output_strm(sqlite3_changegroup*, + int (*xOutput)(void *pOut, const void *pData, int nData), + void *pOut +); + + +/* +** Make sure we can call this stuff from C++. +*/ +#if 0 +} +#endif + +#endif /* !defined(__SQLITESESSION_H_) && defined(SQLITE_ENABLE_SESSION) */ + +/******** End of sqlite3session.h *********/ +/******** Begin file fts5.h *********/ +/* +** 2014 May 31 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -7424,40 +10174,580 @@ struct sqlite3_rtree_geometry { ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** -************************************************************************* -** Internal interface definitions for SQLite. +****************************************************************************** ** +** Interfaces to extend FTS5. Using the interfaces defined in this file, +** FTS5 may be extended with: +** +** * custom tokenizers, and +** * custom auxiliary functions. */ -#ifndef _SQLITEINT_H_ -#define _SQLITEINT_H_ + + +#ifndef _FTS5_H +#define _FTS5_H + + +#if 0 +extern "C" { +#endif + +/************************************************************************* +** CUSTOM AUXILIARY FUNCTIONS +** +** Virtual table implementations may overload SQL functions by implementing +** the sqlite3_module.xFindFunction() method. +*/ + +typedef struct Fts5ExtensionApi Fts5ExtensionApi; +typedef struct Fts5Context Fts5Context; +typedef struct Fts5PhraseIter Fts5PhraseIter; + +typedef void (*fts5_extension_function)( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +); + +struct Fts5PhraseIter { + const unsigned char *a; + const unsigned char *b; +}; /* -** These #defines should enable >2GB file support on POSIX if the -** underlying operating system supports it. If the OS lacks -** large file support, or if the OS is windows, these should be no-ops. +** EXTENSION API FUNCTIONS ** -** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any -** system #includes. Hence, this block of code must be the very first -** code in all source files. +** xUserData(pFts): +** Return a copy of the context pointer the extension function was +** registered with. ** -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch -** on the compiler command line. This is necessary if you are compiling -** on a recent machine (ex: Red Hat 7.2) but you want your code to work -** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2 -** without this option, LFS is enable. But LFS does not exist in the kernel -** in Red Hat 6.0, so the code won't work. Hence, for maximum binary -** portability you should omit LFS. +** xColumnTotalSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the FTS5 table. Or, if iCol is +** non-negative but less than the number of columns in the table, return +** the total number of tokens in column iCol, considering all rows in +** the FTS5 table. ** -** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later. +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnCount(pFts): +** Return the number of columns in the table. +** +** xColumnSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the current row. Or, if iCol is +** non-negative but less than the number of columns in the table, set +** *pnToken to the number of tokens in column iCol of the current row. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** This function may be quite inefficient if used with an FTS5 table +** created with the "columnsize=0" option. +** +** xColumnText: +** This function attempts to retrieve the text of column iCol of the +** current document. If successful, (*pz) is set to point to a buffer +** containing the text in utf-8 encoding, (*pn) is set to the size in bytes +** (not characters) of the buffer and SQLITE_OK is returned. Otherwise, +** if an error occurs, an SQLite error code is returned and the final values +** of (*pz) and (*pn) are undefined. +** +** xPhraseCount: +** Returns the number of phrases in the current query expression. +** +** xPhraseSize: +** Returns the number of tokens in phrase iPhrase of the query. Phrases +** are numbered starting from zero. +** +** xInstCount: +** Set *pnInst to the total number of occurrences of all phrases within +** the query within the current row. Return SQLITE_OK if successful, or +** an error code (i.e. SQLITE_NOMEM) if an error occurs. +** +** This API can be quite slow if used with an FTS5 table created with the +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option +** (i.e. if it is a contentless table), then this API always returns 0. +** +** xInst: +** Query for the details of phrase match iIdx within the current row. +** Phrase matches are numbered starting from zero, so the iIdx argument +** should be greater than or equal to zero and smaller than the value +** output by xInstCount(). +** +** Usually, output parameter *piPhrase is set to the phrase number, *piCol +** to the column in which it occurs and *piOff the token offset of the +** first token of the phrase. The exception is if the table was created +** with the offsets=0 option specified. In this case *piOff is always +** set to -1. +** +** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) +** if an error occurs. +** +** This API can be quite slow if used with an FTS5 table created with the +** "detail=none" or "detail=column" option. +** +** xRowid: +** Returns the rowid of the current row. +** +** xTokenize: +** Tokenize text using the tokenizer belonging to the FTS5 table. +** +** xQueryPhrase(pFts5, iPhrase, pUserData, xCallback): +** This API function is used to query the FTS table for phrase iPhrase +** of the current query. Specifically, a query equivalent to: +** +** ... FROM ftstable WHERE ftstable MATCH $p ORDER BY rowid +** +** with $p set to a phrase equivalent to the phrase iPhrase of the +** current query is executed. Any column filter that applies to +** phrase iPhrase of the current query is included in $p. For each +** row visited, the callback function passed as the fourth argument +** is invoked. The context and API objects passed to the callback +** function may be used to access the properties of each matched row. +** Invoking Api.xUserData() returns a copy of the pointer passed as +** the third argument to pUserData. +** +** If the callback function returns any value other than SQLITE_OK, the +** query is abandoned and the xQueryPhrase function returns immediately. +** If the returned value is SQLITE_DONE, xQueryPhrase returns SQLITE_OK. +** Otherwise, the error code is propagated upwards. +** +** If the query runs to completion without incident, SQLITE_OK is returned. +** Or, if some error occurs before the query completes or is aborted by +** the callback, an SQLite error code is returned. +** +** +** xSetAuxdata(pFts5, pAux, xDelete) +** +** Save the pointer passed as the second argument as the extension functions +** "auxiliary data". The pointer may then be retrieved by the current or any +** future invocation of the same fts5 extension function made as part of +** of the same MATCH query using the xGetAuxdata() API. +** +** Each extension function is allocated a single auxiliary data slot for +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a +** single auxiliary data context. +** +** If there is already an auxiliary data pointer when this function is +** invoked, then it is replaced by the new pointer. If an xDelete callback +** was specified along with the original pointer, it is invoked at this +** point. +** +** The xDelete callback, if one is specified, is also invoked on the +** auxiliary data pointer after the FTS5 query has finished. +** +** If an error (e.g. an OOM condition) occurs within this function, an +** the auxiliary data is set to NULL and an error code returned. If the +** xDelete parameter was not NULL, it is invoked on the auxiliary data +** pointer before returning. +** +** +** xGetAuxdata(pFts5, bClear) +** +** Returns the current auxiliary data pointer for the fts5 extension +** function. See the xSetAuxdata() method for details. +** +** If the bClear argument is non-zero, then the auxiliary data is cleared +** (set to NULL) before this function returns. In this case the xDelete, +** if any, is not invoked. +** +** +** xRowCount(pFts5, pnRow) +** +** This function is used to retrieve the total number of rows in the table. +** In other words, the same value that would be returned by: +** +** SELECT count(*) FROM ftstable; +** +** xPhraseFirst() +** This function is used, along with type Fts5PhraseIter and the xPhraseNext +** method, to iterate through all instances of a single query phrase within +** the current row. This is the same information as is accessible via the +** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient +** to use, this API may be faster under some circumstances. To iterate +** through instances of phrase iPhrase, use the following code: +** +** Fts5PhraseIter iter; +** int iCol, iOff; +** for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff); +** iCol>=0; +** pApi->xPhraseNext(pFts, &iter, &iCol, &iOff) +** ){ +** // An instance of phrase iPhrase at offset iOff of column iCol +** } +** +** The Fts5PhraseIter structure is defined above. Applications should not +** modify this structure directly - it should only be used as shown above +** with the xPhraseFirst() and xPhraseNext() API methods (and by +** xPhraseFirstColumn() and xPhraseNextColumn() as illustrated below). +** +** This API can be quite slow if used with an FTS5 table created with the +** "detail=none" or "detail=column" option. If the FTS5 table is created +** with either "detail=none" or "detail=column" and "content=" option +** (i.e. if it is a contentless table), then this API always iterates +** through an empty set (all calls to xPhraseFirst() set iCol to -1). +** +** xPhraseNext() +** See xPhraseFirst above. +** +** xPhraseFirstColumn() +** This function and xPhraseNextColumn() are similar to the xPhraseFirst() +** and xPhraseNext() APIs described above. The difference is that instead +** of iterating through all instances of a phrase in the current row, these +** APIs are used to iterate through the set of columns in the current row +** that contain one or more instances of a specified phrase. For example: +** +** Fts5PhraseIter iter; +** int iCol; +** for(pApi->xPhraseFirstColumn(pFts, iPhrase, &iter, &iCol); +** iCol>=0; +** pApi->xPhraseNextColumn(pFts, &iter, &iCol) +** ){ +** // Column iCol contains at least one instance of phrase iPhrase +** } +** +** This API can be quite slow if used with an FTS5 table created with the +** "detail=none" option. If the FTS5 table is created with either +** "detail=none" "content=" option (i.e. if it is a contentless table), +** then this API always iterates through an empty set (all calls to +** xPhraseFirstColumn() set iCol to -1). +** +** The information accessed using this API and its companion +** xPhraseFirstColumn() may also be obtained using xPhraseFirst/xPhraseNext +** (or xInst/xInstCount). The chief advantage of this API is that it is +** significantly more efficient than those alternatives when used with +** "detail=column" tables. +** +** xPhraseNextColumn() +** See xPhraseFirstColumn above. */ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 +struct Fts5ExtensionApi { + int iVersion; /* Currently always set to 3 */ + + void *(*xUserData)(Fts5Context*); + + int (*xColumnCount)(Fts5Context*); + int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); + int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); + + int (*xTokenize)(Fts5Context*, + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ + ); + + int (*xPhraseCount)(Fts5Context*); + int (*xPhraseSize)(Fts5Context*, int iPhrase); + + int (*xInstCount)(Fts5Context*, int *pnInst); + int (*xInst)(Fts5Context*, int iIdx, int *piPhrase, int *piCol, int *piOff); + + sqlite3_int64 (*xRowid)(Fts5Context*); + int (*xColumnText)(Fts5Context*, int iCol, const char **pz, int *pn); + int (*xColumnSize)(Fts5Context*, int iCol, int *pnToken); + + int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData, + int(*)(const Fts5ExtensionApi*,Fts5Context*,void*) + ); + int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*)); + void *(*xGetAuxdata)(Fts5Context*, int bClear); + + int (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*); + void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff); + + int (*xPhraseFirstColumn)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*); + void (*xPhraseNextColumn)(Fts5Context*, Fts5PhraseIter*, int *piCol); +}; + +/* +** CUSTOM AUXILIARY FUNCTIONS +*************************************************************************/ + +/************************************************************************* +** CUSTOM TOKENIZERS +** +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the +** following structure. All structure methods must be defined, setting +** any member of the fts5_tokenizer struct to NULL leads to undefined +** behaviour. The structure methods are expected to function as follows: +** +** xCreate: +** This function is used to allocate and initialize a tokenizer instance. +** A tokenizer instance is required to actually tokenize text. +** +** The first argument passed to this function is a copy of the (void*) +** pointer provided by the application when the fts5_tokenizer object +** was registered with FTS5 (the third argument to xCreateTokenizer()). +** The second and third arguments are an array of nul-terminated strings +** containing the tokenizer arguments, if any, specified following the +** tokenizer name as part of the CREATE VIRTUAL TABLE statement used +** to create the FTS5 table. +** +** The final argument is an output variable. If successful, (*ppOut) +** should be set to point to the new tokenizer handle and SQLITE_OK +** returned. If an error occurs, some value other than SQLITE_OK should +** be returned. In this case, fts5 assumes that the final value of *ppOut +** is undefined. +** +** xDelete: +** This function is invoked to delete a tokenizer handle previously +** allocated using xCreate(). Fts5 guarantees that this function will +** be invoked exactly once for each successful call to xCreate(). +** +** xTokenize: +** This function is expected to tokenize the nText byte string indicated +** by argument pText. pText may or may not be nul-terminated. The first +** argument passed to this function is a pointer to an Fts5Tokenizer object +** returned by an earlier call to xCreate(). +** +** The second argument indicates the reason that FTS5 is requesting +** tokenization of the supplied text. This is always one of the following +** four values: +** +**
    • FTS5_TOKENIZE_DOCUMENT - A document is being inserted into +** or removed from the FTS table. The tokenizer is being invoked to +** determine the set of tokens to add to (or delete from) the +** FTS index. +** +**
    • FTS5_TOKENIZE_QUERY - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize +** a bareword or quoted string specified as part of the query. +** +**
    • (FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX) - Same as +** FTS5_TOKENIZE_QUERY, except that the bareword or quoted string is +** followed by a "*" character, indicating that the last token +** returned by the tokenizer will be treated as a token prefix. +** +**
    • FTS5_TOKENIZE_AUX - The tokenizer is being invoked to +** satisfy an fts5_api.xTokenize() request made by an auxiliary +** function. Or an fts5_api.xColumnSize() request made by the same +** on a columnsize=0 database. +**
    +** +** For each token in the input string, the supplied callback xToken() must +** be invoked. The first argument to it should be a copy of the pointer +** passed as the second argument to xTokenize(). The third and fourth +** arguments are a pointer to a buffer containing the token text, and the +** size of the token in bytes. The 4th and 5th arguments are the byte offsets +** of the first byte of and first byte immediately following the text from +** which the token is derived within the input. +** +** The second argument passed to the xToken() callback ("tflags") should +** normally be set to 0. The exception is if the tokenizer supports +** synonyms. In this case see the discussion below for details. +** +** FTS5 assumes the xToken() callback is invoked for each token in the +** order that they occur within the input text. +** +** If an xToken() callback returns any value other than SQLITE_OK, then +** the tokenization should be abandoned and the xTokenize() method should +** immediately return a copy of the xToken() return value. Or, if the +** input buffer is exhausted, xTokenize() should return SQLITE_OK. Finally, +** if an error occurs with the xTokenize() implementation itself, it +** may abandon the tokenization and return any error code other than +** SQLITE_OK or SQLITE_DONE. +** +** SYNONYM SUPPORT +** +** Custom tokenizers may also support synonyms. Consider a case in which a +** user wishes to query for a phrase such as "first place". Using the +** built-in tokenizers, the FTS5 query 'first + place' will match instances +** of "first place" within the document set, but not alternative forms +** such as "1st place". In some applications, it would be better to match +** all instances of "first place" or "1st place" regardless of which form +** the user specified in the MATCH query text. +** +** There are several ways to approach this in FTS5: +** +**
    1. By mapping all synonyms to a single token. In this case, the +** In the above example, this means that the tokenizer returns the +** same token for inputs "first" and "1st". Say that token is in +** fact "first", so that when the user inserts the document "I won +** 1st place" entries are added to the index for tokens "i", "won", +** "first" and "place". If the user then queries for '1st + place', +** the tokenizer substitutes "first" for "1st" and the query works +** as expected. +** +**
    2. By adding multiple synonyms for a single term to the FTS index. +** In this case, when tokenizing query text, the tokenizer may +** provide multiple synonyms for a single term within the document. +** FTS5 then queries the index for each synonym individually. For +** example, faced with the query: +** +** +** ... MATCH 'first place' +** +** the tokenizer offers both "1st" and "first" as synonyms for the +** first token in the MATCH query and FTS5 effectively runs a query +** similar to: +** +** +** ... MATCH '(first OR 1st) place' +** +** except that, for the purposes of auxiliary functions, the query +** still appears to contain just two phrases - "(first OR 1st)" +** being treated as a single phrase. +** +**
    3. By adding multiple synonyms for a single term to the FTS index. +** Using this method, when tokenizing document text, the tokenizer +** provides multiple synonyms for each token. So that when a +** document such as "I won first place" is tokenized, entries are +** added to the FTS index for "i", "won", "first", "1st" and +** "place". +** +** This way, even if the tokenizer does not provide synonyms +** when tokenizing query text (it should not - to do would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entires in the +** FTS index corresponding to both forms of the first token. +**
    +** +** Whether it is parsing document or query text, any call to xToken that +** specifies a tflags argument with the FTS5_TOKEN_COLOCATED bit +** is considered to supply a synonym for the previous token. For example, +** when parsing the document "I won first place", a tokenizer that supports +** synonyms would call xToken() 5 times, as follows: +** +** +** xToken(pCtx, 0, "i", 1, 0, 1); +** xToken(pCtx, 0, "won", 3, 2, 5); +** xToken(pCtx, 0, "first", 5, 6, 11); +** xToken(pCtx, FTS5_TOKEN_COLOCATED, "1st", 3, 6, 11); +** xToken(pCtx, 0, "place", 5, 12, 17); +** +** +** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time +** xToken() is called. Multiple synonyms may be specified for a single token +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** There is no limit to the number of synonyms that may be provided for a +** single token. +** +** In many cases, method (1) above is the best approach. It does not add +** extra data to the FTS index or require FTS5 to query for multiple terms, +** so it is efficient in terms of disk space and query speed. However, it +** does not support prefix queries very well. If, as suggested above, the +** token "first" is subsituted for "1st" by the tokenizer, then the query: +** +** +** ... MATCH '1s*' +** +** will not match documents that contain the token "1st" (as the tokenizer +** will probably not map "1s" to any prefix of "first"). +** +** For full prefix support, method (3) may be preferred. In this case, +** because the index contains entries for both "first" and "1st", prefix +** queries such as 'fi*' or '1s*' will match correctly. However, because +** extra entries are added to the FTS index, this method uses more space +** within the database. +** +** Method (2) offers a midpoint between (1) and (3). Using this method, +** a query such as '1s*' will match documents that contain the literal +** token "1st", but not "first" (assuming the tokenizer is not able to +** provide synonyms for prefixes). However, a non-prefix query like '1st' +** will match against "1st" and "first". This method does not require +** extra disk space, as no extra entries are added to the FTS index. +** On the other hand, it may require more CPU cycles to run MATCH queries, +** as separate queries of the FTS index are required for each synonym. +** +** When using methods (2) or (3), it is important that the tokenizer only +** provide synonyms when tokenizing document text (method (2)) or query +** text (method (3)), not both. Doing so will not cause any errors, but is +** inefficient. +*/ +typedef struct Fts5Tokenizer Fts5Tokenizer; +typedef struct fts5_tokenizer fts5_tokenizer; +struct fts5_tokenizer { + int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); + void (*xDelete)(Fts5Tokenizer*); + int (*xTokenize)(Fts5Tokenizer*, + void *pCtx, + int flags, /* Mask of FTS5_TOKENIZE_* flags */ + const char *pText, int nText, + int (*xToken)( + void *pCtx, /* Copy of 2nd argument to xTokenize() */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Pointer to buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Byte offset of token within input text */ + int iEnd /* Byte offset of end of token within input text */ + ) + ); +}; + +/* Flags that may be passed as the third argument to xTokenize() */ +#define FTS5_TOKENIZE_QUERY 0x0001 +#define FTS5_TOKENIZE_PREFIX 0x0002 +#define FTS5_TOKENIZE_DOCUMENT 0x0004 +#define FTS5_TOKENIZE_AUX 0x0008 + +/* Flags that may be passed by the tokenizer implementation back to FTS5 +** as the third argument to the supplied xToken callback. */ +#define FTS5_TOKEN_COLOCATED 0x0001 /* Same position as prev. token */ + +/* +** END OF CUSTOM TOKENIZERS +*************************************************************************/ + +/************************************************************************* +** FTS5 EXTENSION REGISTRATION API +*/ +typedef struct fts5_api fts5_api; +struct fts5_api { + int iVersion; /* Currently always set to 2 */ + + /* Create a new tokenizer */ + int (*xCreateTokenizer)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_tokenizer *pTokenizer, + void (*xDestroy)(void*) + ); + + /* Find an existing tokenizer */ + int (*xFindTokenizer)( + fts5_api *pApi, + const char *zName, + void **ppContext, + fts5_tokenizer *pTokenizer + ); + + /* Create a new auxiliary function */ + int (*xCreateFunction)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_extension_function xFunction, + void (*xDestroy)(void*) + ); +}; + +/* +** END OF REGISTRATION API +*************************************************************************/ + +#if 0 +} /* end of the 'extern "C"' block */ #endif +#endif /* _FTS5_H */ + +/******** End of fts5.h *********/ + +/************** End of sqlite3.h *********************************************/ +/************** Continuing where we left off in sqliteInt.h ******************/ + /* ** Include the configuration header output by 'configure' if we're using the ** autoconf-based build @@ -7596,14 +10886,16 @@ struct sqlite3_rtree_geometry { #endif /* -** The maximum number of in-memory pages to use for the main database -** table and for temporary tables. The SQLITE_DEFAULT_CACHE_SIZE +** The suggested maximum number of in-memory pages to use for +** the main database table and for temporary tables. +** +** IMPLEMENTATION-OF: R-30185-15359 The default suggested cache size is -2000, +** which means the cache size is limited to 2048000 bytes of memory. +** IMPLEMENTATION-OF: R-48205-43578 The default suggested cache size can be +** altered using the SQLITE_DEFAULT_CACHE_SIZE compile-time options. */ #ifndef SQLITE_DEFAULT_CACHE_SIZE -# define SQLITE_DEFAULT_CACHE_SIZE 2000 -#endif -#ifndef SQLITE_DEFAULT_TEMP_CACHE_SIZE -# define SQLITE_DEFAULT_TEMP_CACHE_SIZE 500 +# define SQLITE_DEFAULT_CACHE_SIZE -2000 #endif /* @@ -7616,8 +10908,9 @@ struct sqlite3_rtree_geometry { /* ** The maximum number of attached databases. This must be between 0 -** and 62. The upper bound on 62 is because a 64-bit integer bitmap -** is used internally to track attached databases. +** and 125. The upper bound of 125 is because the attached databases are +** counted using a signed 8-bit integer which has a maximum value of 127 +** and we have to allow 2 extra counts for the "main" and "temp" databases. */ #ifndef SQLITE_MAX_ATTACHED # define SQLITE_MAX_ATTACHED 10 @@ -7652,7 +10945,7 @@ struct sqlite3_rtree_geometry { ** The default size of a database page. */ #ifndef SQLITE_DEFAULT_PAGE_SIZE -# define SQLITE_DEFAULT_PAGE_SIZE 1024 +# define SQLITE_DEFAULT_PAGE_SIZE 4096 #endif #if SQLITE_DEFAULT_PAGE_SIZE>SQLITE_MAX_PAGE_SIZE # undef SQLITE_DEFAULT_PAGE_SIZE @@ -7717,15 +11010,6 @@ struct sqlite3_rtree_geometry { #pragma warn -spa /* Suspicious pointer arithmetic */ #endif -/* Needed for various definitions... */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE -#endif - -#if defined(__OpenBSD__) && !defined(_BSD_SOURCE) -# define _BSD_SOURCE -#endif - /* ** Include standard header files as necessary */ @@ -7742,7 +11026,7 @@ struct sqlite3_rtree_geometry { ** to the next, so we have developed the following set of #if statements ** to generate appropriate macros for a wide range of compilers. ** -** The correct "ANSI" way to do this is to use the intptr_t type. +** The correct "ANSI" way to do this is to use the intptr_t type. ** Unfortunately, that typedef is not available on all compilers, or ** if it is available, it requires an #include of specific headers ** that vary from one machine to the next. @@ -7766,6 +11050,37 @@ struct sqlite3_rtree_geometry { # define SQLITE_PTR_TO_INT(X) ((int)(X)) #endif +/* +** A macro to hint to the compiler that a function should not be +** inlined. +*/ +#if defined(__GNUC__) +# define SQLITE_NOINLINE __attribute__((noinline)) +#elif defined(_MSC_VER) && _MSC_VER>=1310 +# define SQLITE_NOINLINE __declspec(noinline) +#else +# define SQLITE_NOINLINE +#endif + +/* +** Make sure that the compiler intrinsics we desire are enabled when +** compiling with an appropriate version of MSVC unless prevented by +** the SQLITE_DISABLE_INTRINSIC define. +*/ +#if !defined(SQLITE_DISABLE_INTRINSIC) +# if defined(_MSC_VER) && _MSC_VER>=1400 +# if !defined(_WIN32_WCE) +# include +# pragma intrinsic(_byteswap_ushort) +# pragma intrinsic(_byteswap_ulong) +# pragma intrinsic(_byteswap_uint64) +# pragma intrinsic(_ReadWriteBarrier) +# else +# include +# endif +# endif +#endif + /* ** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2. ** 0 means mutexes are permanently disable and the library is never @@ -7794,10 +11109,9 @@ struct sqlite3_rtree_geometry { #endif /* -** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1. -** It determines whether or not the features related to -** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can -** be overridden at runtime using the sqlite3_config() API. +** EVIDENCE-OF: R-25715-37072 Memory allocation statistics are enabled by +** default unless SQLite is compiled with SQLITE_DEFAULT_MEMSTATUS=0 in +** which case memory allocation statistics are disabled by default. */ #if !defined(SQLITE_DEFAULT_MEMSTATUS) # define SQLITE_DEFAULT_MEMSTATUS 1 @@ -7865,7 +11179,7 @@ struct sqlite3_rtree_geometry { ** is set. Thus NDEBUG becomes an opt-in rather than an opt-out ** feature. */ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) # define NDEBUG 1 #endif #if defined(NDEBUG) && defined(SQLITE_DEBUG) @@ -7880,7 +11194,7 @@ struct sqlite3_rtree_geometry { #endif /* -** The testcase() macro is used to aid in coverage testing. When +** The testcase() macro is used to aid in coverage testing. When ** doing coverage testing, the condition inside the argument to ** testcase() must be evaluated both true and false in order to ** get full branch coverage. The testcase() macro is inserted @@ -7926,7 +11240,7 @@ SQLITE_PRIVATE void sqlite3Coverage(int); #endif /* -** The ALWAYS and NEVER macros surround boolean expressions which +** The ALWAYS and NEVER macros surround boolean expressions which ** are intended to always be true or false, respectively. Such ** expressions could be omitted from the code completely. But they ** are included in a few cases in order to enhance the resilience @@ -7940,7 +11254,7 @@ SQLITE_PRIVATE void sqlite3Coverage(int); ** be true and false so that the unreachable code they specify will ** not be counted as untested code. */ -#if defined(SQLITE_COVERAGE_TEST) +#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) # define ALWAYS(X) (1) # define NEVER(X) (0) #elif !defined(NDEBUG) @@ -7952,7 +11266,55 @@ SQLITE_PRIVATE void sqlite3Coverage(int); #endif /* -** Return true (non-zero) if the input is a integer that is too large +** Some malloc failures are only possible if SQLITE_TEST_REALLOC_STRESS is +** defined. We need to defend against those failures when testing with +** SQLITE_TEST_REALLOC_STRESS, but we don't want the unreachable branches +** during a normal build. The following macro can be used to disable tests +** that are always false except when SQLITE_TEST_REALLOC_STRESS is set. +*/ +#if defined(SQLITE_TEST_REALLOC_STRESS) +# define ONLY_IF_REALLOC_STRESS(X) (X) +#elif !defined(NDEBUG) +# define ONLY_IF_REALLOC_STRESS(X) ((X)?(assert(0),1):0) +#else +# define ONLY_IF_REALLOC_STRESS(X) (0) +#endif + +/* +** Declarations used for tracing the operating system interfaces. +*/ +#if defined(SQLITE_FORCE_OS_TRACE) || defined(SQLITE_TEST) || \ + (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) + extern int sqlite3OSTrace; +# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X +# define SQLITE_HAVE_OS_TRACE +#else +# define OSTRACE(X) +# undef SQLITE_HAVE_OS_TRACE +#endif + +/* +** Is the sqlite3ErrName() function needed in the build? Currently, +** it is needed by "mutex_w32.c" (when debugging), "os_win.c" (when +** OSTRACE is enabled), and by several "test*.c" files (which are +** compiled using SQLITE_TEST). +*/ +#if defined(SQLITE_HAVE_OS_TRACE) || defined(SQLITE_TEST) || \ + (defined(SQLITE_DEBUG) && SQLITE_OS_WIN) +# define SQLITE_NEED_ERR_NAME +#else +# undef SQLITE_NEED_ERR_NAME +#endif + +/* +** SQLITE_ENABLE_EXPLAIN_COMMENTS is incompatible with SQLITE_OMIT_EXPLAIN +*/ +#ifdef SQLITE_OMIT_EXPLAIN +# undef SQLITE_ENABLE_EXPLAIN_COMMENTS +#endif + +/* +** Return true (non-zero) if the input is an integer that is too large ** to fit in 32-bits. This macro is used inside of various testcase() ** macros to verify that we have tested SQLite for large-file support. */ @@ -7984,8 +11346,8 @@ SQLITE_PRIVATE void sqlite3Coverage(int); ** This is the header file for the generic hash-table implementation ** used in SQLite. */ -#ifndef _SQLITE_HASH_H_ -#define _SQLITE_HASH_H_ +#ifndef SQLITE_HASH_H +#define SQLITE_HASH_H /* Forward declarations of structures. */ typedef struct Hash Hash; @@ -8031,15 +11393,15 @@ struct Hash { struct HashElem { HashElem *next, *prev; /* Next and previous elements in the table */ void *data; /* Data associated with this element */ - const char *pKey; int nKey; /* Key associated with this element */ + const char *pKey; /* Key associated with this element */ }; /* ** Access routines. To delete, insert a NULL pointer. */ SQLITE_PRIVATE void sqlite3HashInit(Hash*); -SQLITE_PRIVATE void *sqlite3HashInsert(Hash*, const char *pKey, int nKey, void *pData); -SQLITE_PRIVATE void *sqlite3HashFind(const Hash*, const char *pKey, int nKey); +SQLITE_PRIVATE void *sqlite3HashInsert(Hash*, const char *pKey, void *pData); +SQLITE_PRIVATE void *sqlite3HashFind(const Hash*, const char *pKey); SQLITE_PRIVATE void sqlite3HashClear(Hash*); /* @@ -8065,7 +11427,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); */ /* #define sqliteHashCount(H) ((H)->count) // NOT USED */ -#endif /* _SQLITE_HASH_H_ */ +#endif /* SQLITE_HASH_H */ /************** End of hash.h ************************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ @@ -8097,76 +11459,76 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #define TK_AS 24 #define TK_WITHOUT 25 #define TK_COMMA 26 -#define TK_ID 27 -#define TK_INDEXED 28 -#define TK_ABORT 29 -#define TK_ACTION 30 -#define TK_AFTER 31 -#define TK_ANALYZE 32 -#define TK_ASC 33 -#define TK_ATTACH 34 -#define TK_BEFORE 35 -#define TK_BY 36 -#define TK_CASCADE 37 -#define TK_CAST 38 -#define TK_COLUMNKW 39 -#define TK_CONFLICT 40 -#define TK_DATABASE 41 -#define TK_DESC 42 -#define TK_DETACH 43 -#define TK_EACH 44 -#define TK_FAIL 45 -#define TK_FOR 46 -#define TK_IGNORE 47 -#define TK_INITIALLY 48 -#define TK_INSTEAD 49 -#define TK_LIKE_KW 50 -#define TK_MATCH 51 -#define TK_NO 52 -#define TK_KEY 53 -#define TK_OF 54 -#define TK_OFFSET 55 -#define TK_PRAGMA 56 -#define TK_RAISE 57 -#define TK_RECURSIVE 58 -#define TK_REPLACE 59 -#define TK_RESTRICT 60 -#define TK_ROW 61 -#define TK_TRIGGER 62 -#define TK_VACUUM 63 -#define TK_VIEW 64 -#define TK_VIRTUAL 65 -#define TK_WITH 66 -#define TK_REINDEX 67 -#define TK_RENAME 68 -#define TK_CTIME_KW 69 -#define TK_ANY 70 -#define TK_OR 71 -#define TK_AND 72 -#define TK_IS 73 -#define TK_BETWEEN 74 -#define TK_IN 75 -#define TK_ISNULL 76 -#define TK_NOTNULL 77 -#define TK_NE 78 -#define TK_EQ 79 -#define TK_GT 80 -#define TK_LE 81 -#define TK_LT 82 -#define TK_GE 83 -#define TK_ESCAPE 84 -#define TK_BITAND 85 -#define TK_BITOR 86 -#define TK_LSHIFT 87 -#define TK_RSHIFT 88 -#define TK_PLUS 89 -#define TK_MINUS 90 -#define TK_STAR 91 -#define TK_SLASH 92 -#define TK_REM 93 -#define TK_CONCAT 94 -#define TK_COLLATE 95 -#define TK_BITNOT 96 +#define TK_OR 27 +#define TK_AND 28 +#define TK_IS 29 +#define TK_MATCH 30 +#define TK_LIKE_KW 31 +#define TK_BETWEEN 32 +#define TK_IN 33 +#define TK_ISNULL 34 +#define TK_NOTNULL 35 +#define TK_NE 36 +#define TK_EQ 37 +#define TK_GT 38 +#define TK_LE 39 +#define TK_LT 40 +#define TK_GE 41 +#define TK_ESCAPE 42 +#define TK_BITAND 43 +#define TK_BITOR 44 +#define TK_LSHIFT 45 +#define TK_RSHIFT 46 +#define TK_PLUS 47 +#define TK_MINUS 48 +#define TK_STAR 49 +#define TK_SLASH 50 +#define TK_REM 51 +#define TK_CONCAT 52 +#define TK_COLLATE 53 +#define TK_BITNOT 54 +#define TK_ID 55 +#define TK_INDEXED 56 +#define TK_ABORT 57 +#define TK_ACTION 58 +#define TK_AFTER 59 +#define TK_ANALYZE 60 +#define TK_ASC 61 +#define TK_ATTACH 62 +#define TK_BEFORE 63 +#define TK_BY 64 +#define TK_CASCADE 65 +#define TK_CAST 66 +#define TK_COLUMNKW 67 +#define TK_CONFLICT 68 +#define TK_DATABASE 69 +#define TK_DESC 70 +#define TK_DETACH 71 +#define TK_EACH 72 +#define TK_FAIL 73 +#define TK_FOR 74 +#define TK_IGNORE 75 +#define TK_INITIALLY 76 +#define TK_INSTEAD 77 +#define TK_NO 78 +#define TK_KEY 79 +#define TK_OF 80 +#define TK_OFFSET 81 +#define TK_PRAGMA 82 +#define TK_RAISE 83 +#define TK_RECURSIVE 84 +#define TK_REPLACE 85 +#define TK_RESTRICT 86 +#define TK_ROW 87 +#define TK_TRIGGER 88 +#define TK_VACUUM 89 +#define TK_VIEW 90 +#define TK_VIRTUAL 91 +#define TK_WITH 92 +#define TK_REINDEX 93 +#define TK_RENAME 94 +#define TK_CTIME_KW 95 +#define TK_ANY 96 #define TK_STRING 97 #define TK_JOIN_KW 98 #define TK_CONSTRAINT 99 @@ -8202,9 +11564,9 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #define TK_LIMIT 129 #define TK_WHERE 130 #define TK_INTO 131 -#define TK_INTEGER 132 -#define TK_FLOAT 133 -#define TK_BLOB 134 +#define TK_FLOAT 132 +#define TK_BLOB 133 +#define TK_INTEGER 134 #define TK_VARIABLE 135 #define TK_CASE 136 #define TK_WHEN 137 @@ -8220,16 +11582,27 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #define TK_TO_REAL 147 #define TK_ISNOT 148 #define TK_END_OF_FILE 149 -#define TK_ILLEGAL 150 -#define TK_SPACE 151 -#define TK_UNCLOSED_STRING 152 -#define TK_FUNCTION 153 -#define TK_COLUMN 154 -#define TK_AGG_FUNCTION 155 -#define TK_AGG_COLUMN 156 -#define TK_UMINUS 157 -#define TK_UPLUS 158 -#define TK_REGISTER 159 +#define TK_UNCLOSED_STRING 150 +#define TK_FUNCTION 151 +#define TK_COLUMN 152 +#define TK_AGG_FUNCTION 153 +#define TK_AGG_COLUMN 154 +#define TK_UMINUS 155 +#define TK_UPLUS 156 +#define TK_REGISTER 157 +#define TK_VECTOR 158 +#define TK_SELECT_COLUMN 159 +#define TK_ASTERISK 160 +#define TK_SPAN 161 +#define TK_SPACE 162 +#define TK_ILLEGAL 163 + +/* The token codes above must all fit in 8 bits */ +#define TKFLG_MASK 0xff + +/* Flags that can be added to a token code when it is not +** being stored in a u8: */ +#define TKFLG_DONTFOLD 0x100 /* Omit constant folding optimizations */ /************** End of parse.h ***********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ @@ -8239,6 +11612,18 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); #include #include +/* +** Use a macro to replace memcpy() if compiled with SQLITE_INLINE_MEMCPY. +** This allows better measurements of where memcpy() is used when running +** cachegrind. But this macro version of memcpy() is very slow so it +** should not be used in production. This is a performance measurement +** hack only. +*/ +#ifdef SQLITE_INLINE_MEMCPY +# define memcpy(D,S,N) {char*xxd=(char*)(D);const char*xxs=(const char*)(S);\ + int xxn=(N);while(xxn-->0)*(xxd++)=*(xxs++);} +#endif + /* ** If compiling for a processor that lacks floating point support, ** substitute integer for floating-point @@ -8261,7 +11646,7 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); /* ** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0 -** afterward. Having this macro allows us to cause the C compiler +** afterward. Having this macro allows us to cause the C compiler ** to omit code used by TEMP tables without messy #ifndef statements. */ #ifdef SQLITE_OMIT_TEMPDB @@ -8298,6 +11683,39 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); # define SQLITE_TEMP_STORE_xc 1 /* Exclude from ctime.c */ #endif +/* +** If no value has been provided for SQLITE_MAX_WORKER_THREADS, or if +** SQLITE_TEMP_STORE is set to 3 (never use temporary files), set it +** to zero. +*/ +#if SQLITE_TEMP_STORE==3 || SQLITE_THREADSAFE==0 +# undef SQLITE_MAX_WORKER_THREADS +# define SQLITE_MAX_WORKER_THREADS 0 +#endif +#ifndef SQLITE_MAX_WORKER_THREADS +# define SQLITE_MAX_WORKER_THREADS 8 +#endif +#ifndef SQLITE_DEFAULT_WORKER_THREADS +# define SQLITE_DEFAULT_WORKER_THREADS 0 +#endif +#if SQLITE_DEFAULT_WORKER_THREADS>SQLITE_MAX_WORKER_THREADS +# undef SQLITE_MAX_WORKER_THREADS +# define SQLITE_MAX_WORKER_THREADS SQLITE_DEFAULT_WORKER_THREADS +#endif + +/* +** The default initial allocation for the pagecache when using separate +** pagecaches for each database connection. A positive number is the +** number of pages. A negative number N translations means that a buffer +** of -1024*N bytes is allocated and used for as many pages as it will hold. +** +** The default value of "20" was choosen to minimize the run-time of the +** speedtest1 test program with options: --shrink-memory --reprepare +*/ +#ifndef SQLITE_DEFAULT_PCACHE_INITSZ +# define SQLITE_DEFAULT_PCACHE_INITSZ 20 +#endif + /* ** GCC does not define the offsetof() macro so we'll have to do it ** ourselves. @@ -8309,8 +11727,17 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*); /* ** Macros to compute minimum and maximum of two numbers. */ -#define MIN(A,B) ((A)<(B)?(A):(B)) -#define MAX(A,B) ((A)>(B)?(A):(B)) +#ifndef MIN +# define MIN(A,B) ((A)<(B)?(A):(B)) +#endif +#ifndef MAX +# define MAX(A,B) ((A)>(B)?(A):(B)) +#endif + +/* +** Swap two objects of type TYPE. +*/ +#define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} /* ** Check to see if this machine uses EBCDIC. (Yes, believe it or @@ -8401,10 +11828,10 @@ typedef INT8_TYPE i8; /* 1-byte signed integer */ ** gives a possible range of values of approximately 1.0e986 to 1e-986. ** But the allowed values are "grainy". Not every value is representable. ** For example, quantities 16 and 17 are both represented by a LogEst -** of 40. However, since LogEst quantatites are suppose to be estimates, +** of 40. However, since LogEst quantities are suppose to be estimates, ** not exact values, this imprecision is not a problem. ** -** "LogEst" is short for "Logarithimic Estimate". +** "LogEst" is short for "Logarithmic Estimate". ** ** Examples: ** 1 -> 0 20 -> 43 10000 -> 132 @@ -8413,7 +11840,7 @@ typedef INT8_TYPE i8; /* 1-byte signed integer */ ** 4 -> 20 1000 -> 99 1048576 -> 200 ** 10 -> 33 1024 -> 100 4294967296 -> 320 ** -** The LogEst can be negative to indicate fractional values. +** The LogEst can be negative to indicate fractional values. ** Examples: ** ** 0.5 -> -10 0.1 -> -33 0.0625 -> -40 @@ -8421,23 +11848,81 @@ typedef INT8_TYPE i8; /* 1-byte signed integer */ typedef INT16_TYPE LogEst; /* -** Macros to determine whether the machine is big or little endian, -** evaluated at runtime. +** Set the SQLITE_PTRSIZE macro to the number of bytes in a pointer */ -#ifdef SQLITE_AMALGAMATION -SQLITE_PRIVATE const int sqlite3one = 1; -#else -SQLITE_PRIVATE const int sqlite3one; +#ifndef SQLITE_PTRSIZE +# if defined(__SIZEOF_POINTER__) +# define SQLITE_PTRSIZE __SIZEOF_POINTER__ +# elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(_M_ARM) || defined(__arm__) || defined(__x86) +# define SQLITE_PTRSIZE 4 +# else +# define SQLITE_PTRSIZE 8 +# endif #endif -#if defined(i386) || defined(__i386__) || defined(_M_IX86)\ - || defined(__x86_64) || defined(__x86_64__) + +/* The uptr type is an unsigned integer large enough to hold a pointer +*/ +#if defined(HAVE_STDINT_H) + typedef uintptr_t uptr; +#elif SQLITE_PTRSIZE==4 + typedef u32 uptr; +#else + typedef u64 uptr; +#endif + +/* +** The SQLITE_WITHIN(P,S,E) macro checks to see if pointer P points to +** something between S (inclusive) and E (exclusive). +** +** In other words, S is a buffer and E is a pointer to the first byte after +** the end of buffer S. This macro returns true if P points to something +** contained within the buffer S. +*/ +#define SQLITE_WITHIN(P,S,E) (((uptr)(P)>=(uptr)(S))&&((uptr)(P)<(uptr)(E))) + + +/* +** Macros to determine whether the machine is big or little endian, +** and whether or not that determination is run-time or compile-time. +** +** For best performance, an attempt is made to guess at the byte-order +** using C-preprocessor macros. If that is unsuccessful, or if +** -DSQLITE_BYTEORDER=0 is set, then byte-order is determined +** at run-time. +*/ +#ifndef SQLITE_BYTEORDER +# if defined(HAVE_SYS_ENDIAN_H) && !defined(SQLITE_RUNTIME_BYTEORDER) +# include +# define SQLITE_BYTEORDER _BYTE_ORDER +# elif defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ + defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ + defined(__arm__) +# define SQLITE_BYTEORDER 1234 +# elif defined(sparc) || defined(__ppc__) +# define SQLITE_BYTEORDER 4321 +# else +# define SQLITE_BYTEORDER 0 +# endif +#endif +#if SQLITE_BYTEORDER==4321 +# define SQLITE_BIGENDIAN 1 +# define SQLITE_LITTLEENDIAN 0 +# define SQLITE_UTF16NATIVE SQLITE_UTF16BE +#elif SQLITE_BYTEORDER==1234 # define SQLITE_BIGENDIAN 0 # define SQLITE_LITTLEENDIAN 1 # define SQLITE_UTF16NATIVE SQLITE_UTF16LE #else +# ifdef SQLITE_AMALGAMATION + const int sqlite3one = 1; +# else + extern const int sqlite3one; +# endif # define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) # define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) -# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) +# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) #endif /* @@ -8448,7 +11933,7 @@ SQLITE_PRIVATE const int sqlite3one; #define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) #define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) -/* +/* ** Round up a number to the next larger multiple of 8. This is used ** to force 8-byte alignment on 64-bit architectures. */ @@ -8465,7 +11950,7 @@ SQLITE_PRIVATE const int sqlite3one; ** all alignment restrictions correct. ** ** Except, if SQLITE_4_BYTE_ALIGNED_MALLOC is defined, then the -** underlying malloc() implemention might return us 4-byte aligned +** underlying malloc() implementation might return us 4-byte aligned ** pointers. In that case, only verify 4-byte alignment. */ #ifdef SQLITE_4_BYTE_ALIGNED_MALLOC @@ -8487,16 +11972,14 @@ SQLITE_PRIVATE const int sqlite3one; */ #ifdef __APPLE__ # include -# if TARGET_OS_IPHONE -# undef SQLITE_MAX_MMAP_SIZE -# define SQLITE_MAX_MMAP_SIZE 0 -# endif #endif #ifndef SQLITE_MAX_MMAP_SIZE # if defined(__linux__) \ || defined(_WIN32) \ || (defined(__APPLE__) && defined(__MACH__)) \ - || defined(__sun) + || defined(__sun) \ + || defined(__FreeBSD__) \ + || defined(__DragonFly__) # define SQLITE_MAX_MMAP_SIZE 0x7fff0000 /* 2147418112 */ # else # define SQLITE_MAX_MMAP_SIZE 0 @@ -8532,9 +12015,19 @@ SQLITE_PRIVATE const int sqlite3one; # undef SQLITE_ENABLE_STAT3_OR_STAT4 #endif +/* +** SELECTTRACE_ENABLED will be either 1 or 0 depending on whether or not +** the Select query generator tracing logic is turned on. +*/ +#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_SELECTTRACE) +# define SELECTTRACE_ENABLED 1 +#else +# define SELECTTRACE_ENABLED 0 +#endif + /* ** An instance of the following structure is used to store the busy-handler -** callback for a given sqlite handle. +** callback for a given sqlite handle. ** ** The sqlite.busyHandler member of the sqlite struct contains the busy ** callback for the database handle. Each pager opened via the sqlite @@ -8579,9 +12072,9 @@ struct BusyHandler { /* ** The following value as a destructor means to use sqlite3DbFree(). -** The sqlite3DbFree() routine requires two parameters instead of the -** one parameter that destructors normally want. So we have to introduce -** this magic value that the code knows to handle differently. Any +** The sqlite3DbFree() routine requires two parameters instead of the +** one parameter that destructors normally want. So we have to introduce +** this magic value that the code knows to handle differently. Any ** pointer will work here as long as it is distinct from SQLITE_STATIC ** and SQLITE_TRANSIENT. */ @@ -8605,19 +12098,19 @@ struct BusyHandler { #define SQLITE_WSD const #define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v))) #define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config) -SQLITE_API int sqlite3_wsd_init(int N, int J); -SQLITE_API void *sqlite3_wsd_find(void *K, int L); +SQLITE_API int sqlite3_wsd_init(int N, int J); +SQLITE_API void *sqlite3_wsd_find(void *K, int L); #else - #define SQLITE_WSD + #define SQLITE_WSD #define GLOBAL(t,v) v #define sqlite3GlobalConfig sqlite3Config #endif /* ** The following macros are used to suppress compiler warnings and to -** make it clear to human readers when a function parameter is deliberately +** make it clear to human readers when a function parameter is deliberately ** left unused within the body of a function. This usually happens when -** a function is called via a function pointer. For example the +** a function is called via a function pointer. For example the ** implementation of an SQL aggregate step callback may not use the ** parameter indicating the number of arguments passed to the aggregate, ** if it knows that this is enforced elsewhere. @@ -8660,16 +12153,19 @@ typedef struct LookasideSlot LookasideSlot; typedef struct Module Module; typedef struct NameContext NameContext; typedef struct Parse Parse; +typedef struct PreUpdate PreUpdate; typedef struct PrintfArguments PrintfArguments; typedef struct RowSet RowSet; typedef struct Savepoint Savepoint; typedef struct Select Select; +typedef struct SQLiteThread SQLiteThread; typedef struct SelectDest SelectDest; typedef struct SrcList SrcList; typedef struct StrAccum StrAccum; typedef struct Table Table; typedef struct TableLock TableLock; typedef struct Token Token; +typedef struct TreeView TreeView; typedef struct Trigger Trigger; typedef struct TriggerPrg TriggerPrg; typedef struct TriggerStep TriggerStep; @@ -8680,8 +12176,16 @@ typedef struct Walker Walker; typedef struct WhereInfo WhereInfo; typedef struct With With; +/* A VList object records a mapping between parameters/variables/wildcards +** in the SQL statement (such as $abc, @pqr, or :xyz) and the integer +** variable number associated with that parameter. See the format description +** on the sqlite3VListAdd() routine for more information. A VList is really +** just an array of integers. +*/ +typedef int VList; + /* -** Defer sourcing vdbe.h and btree.h until after the "u8" and +** Defer sourcing vdbe.h and btree.h until after the "u8" and ** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque ** pointer types (i.e. FuncDef) defined above. */ @@ -8702,13 +12206,13 @@ typedef struct With With; ** subsystem. See comments in the source code for a detailed description ** of what each interface routine does. */ -#ifndef _BTREE_H_ -#define _BTREE_H_ +#ifndef SQLITE_BTREE_H +#define SQLITE_BTREE_H /* TODO: This definition is just included so other modules compile. It ** needs to be revisited. */ -#define SQLITE_N_BTREE_META 10 +#define SQLITE_N_BTREE_META 16 /* ** If defined as non-zero, auto-vacuum is enabled by default. Otherwise @@ -8728,6 +12232,7 @@ typedef struct With With; typedef struct Btree Btree; typedef struct BtCursor BtCursor; typedef struct BtShared BtShared; +typedef struct BtreePayload BtreePayload; SQLITE_PRIVATE int sqlite3BtreeOpen( @@ -8752,25 +12257,25 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( SQLITE_PRIVATE int sqlite3BtreeClose(Btree*); SQLITE_PRIVATE int sqlite3BtreeSetCacheSize(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64); +SQLITE_PRIVATE int sqlite3BtreeSetSpillSize(Btree*,int); +#if SQLITE_MAX_MMAP_SIZE>0 +SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64); +#endif SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(Btree*,unsigned); -SQLITE_PRIVATE int sqlite3BtreeSyncDisabled(Btree*); SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree*); SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int); SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*); SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int); -SQLITE_PRIVATE int sqlite3BtreeGetReserve(Btree*); -#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG) +SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree*); SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p); -#endif SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int); SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *); SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int); SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int); SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*); -SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int); +SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int,int); SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int); SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags); SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*); @@ -8778,7 +12283,9 @@ SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree*); SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree*); SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *, int, void(*)(void *)); SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *pBtree); +#ifndef SQLITE_OMIT_SHARED_CACHE SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *pBtree, int iTab, u8 isWriteLock); +#endif SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *, int, int); SQLITE_PRIVATE const char *sqlite3BtreeGetFilename(Btree *); @@ -8802,7 +12309,8 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *); SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree*, int, int*); SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree*, int, int*); -SQLITE_PRIVATE void sqlite3BtreeTripAllCursors(Btree*, int); +SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor*); +SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree*, int, int); SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue); SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value); @@ -8820,6 +12328,11 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); ** For example, the free-page-count field is located at byte offset 36 of ** the database file header. The incr-vacuum-flag field is located at ** byte offset 64 (== 36+4*7). +** +** The BTREE_DATA_VERSION value is not really a value stored in the header. +** It is a read-only number computed by the pager. But we merge it with +** the header value access routines since its access pattern is the same. +** Call it a "virtual meta value". */ #define BTREE_FREE_PAGE_COUNT 0 #define BTREE_SCHEMA_VERSION 1 @@ -8830,12 +12343,78 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p); #define BTREE_USER_VERSION 6 #define BTREE_INCR_VACUUM 7 #define BTREE_APPLICATION_ID 8 +#define BTREE_DATA_VERSION 15 /* A virtual meta-value */ /* -** Values that may be OR'd together to form the second argument of an -** sqlite3BtreeCursorHints() call. +** Kinds of hints that can be passed into the sqlite3BtreeCursorHint() +** interface. +** +** BTREE_HINT_RANGE (arguments: Expr*, Mem*) +** +** The first argument is an Expr* (which is guaranteed to be constant for +** the lifetime of the cursor) that defines constraints on which rows +** might be fetched with this cursor. The Expr* tree may contain +** TK_REGISTER nodes that refer to values stored in the array of registers +** passed as the second parameter. In other words, if Expr.op==TK_REGISTER +** then the value of the node is the value in Mem[pExpr.iTable]. Any +** TK_COLUMN node in the expression tree refers to the Expr.iColumn-th +** column of the b-tree of the cursor. The Expr tree will not contain +** any function calls nor subqueries nor references to b-trees other than +** the cursor being hinted. +** +** The design of the _RANGE hint is aid b-tree implementations that try +** to prefetch content from remote machines - to provide those +** implementations with limits on what needs to be prefetched and thereby +** reduce network bandwidth. +** +** Note that BTREE_HINT_FLAGS with BTREE_BULKLOAD is the only hint used by +** standard SQLite. The other hints are provided for extentions that use +** the SQLite parser and code generator but substitute their own storage +** engine. */ -#define BTREE_BULKLOAD 0x00000001 +#define BTREE_HINT_RANGE 0 /* Range constraints on queries */ + +/* +** Values that may be OR'd together to form the argument to the +** BTREE_HINT_FLAGS hint for sqlite3BtreeCursorHint(): +** +** The BTREE_BULKLOAD flag is set on index cursors when the index is going +** to be filled with content that is already in sorted order. +** +** The BTREE_SEEK_EQ flag is set on cursors that will get OP_SeekGE or +** OP_SeekLE opcodes for a range search, but where the range of entries +** selected will all have the same key. In other words, the cursor will +** be used only for equality key searches. +** +*/ +#define BTREE_BULKLOAD 0x00000001 /* Used to full index in sorted order */ +#define BTREE_SEEK_EQ 0x00000002 /* EQ seeks only - no range seeks */ + +/* +** Flags passed as the third argument to sqlite3BtreeCursor(). +** +** For read-only cursors the wrFlag argument is always zero. For read-write +** cursors it may be set to either (BTREE_WRCSR|BTREE_FORDELETE) or just +** (BTREE_WRCSR). If the BTREE_FORDELETE bit is set, then the cursor will +** only be used by SQLite for the following: +** +** * to seek to and then delete specific entries, and/or +** +** * to read values that will be used to create keys that other +** BTREE_FORDELETE cursors will seek to and delete. +** +** The BTREE_FORDELETE flag is an optimization hint. It is not used by +** by this, the native b-tree engine of SQLite, but it is available to +** alternative storage engines that might be substituted in place of this +** b-tree system. For alternative storage engines in which a delete of +** the main table row automatically deletes corresponding index rows, +** the FORDELETE flag hint allows those alternative storage engines to +** skip a lot of work. Namely: FORDELETE cursors may treat all SEEK +** and DELETE operations as no-ops, and any READ operation against a +** FORDELETE cursor may return a null row: 0x01 0x00. +*/ +#define BTREE_WRCSR 0x00000004 /* read-write cursor */ +#define BTREE_FORDELETE 0x00000008 /* Cursor is for seek/delete only */ SQLITE_PRIVATE int sqlite3BtreeCursor( Btree*, /* BTree containing table to open */ @@ -8846,6 +12425,10 @@ SQLITE_PRIVATE int sqlite3BtreeCursor( ); SQLITE_PRIVATE int sqlite3BtreeCursorSize(void); SQLITE_PRIVATE void sqlite3BtreeCursorZero(BtCursor*); +SQLITE_PRIVATE void sqlite3BtreeCursorHintFlags(BtCursor*, unsigned); +#ifdef SQLITE_ENABLE_CURSOR_HINTS +SQLITE_PRIVATE void sqlite3BtreeCursorHint(BtCursor*, int, ...); +#endif SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor*); SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( @@ -8855,37 +12438,73 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( int bias, int *pRes ); -SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*, int*); -SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*); -SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const void *pKey, i64 nKey, - const void *pData, int nData, - int nZero, int bias, int seekResult); +SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*); +SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor*, int*); +SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, u8 flags); + +/* Allowed flags for sqlite3BtreeDelete() and sqlite3BtreeInsert() */ +#define BTREE_SAVEPOSITION 0x02 /* Leave cursor pointing at NEXT or PREV */ +#define BTREE_AUXDELETE 0x04 /* not the primary delete operation */ +#define BTREE_APPEND 0x08 /* Insert is likely an append */ + +/* An instance of the BtreePayload object describes the content of a single +** entry in either an index or table btree. +** +** Index btrees (used for indexes and also WITHOUT ROWID tables) contain +** an arbitrary key and no data. These btrees have pKey,nKey set to their +** key and pData,nData,nZero set to zero. +** +** Table btrees (used for rowid tables) contain an integer rowid used as +** the key and passed in the nKey field. The pKey field is zero. +** pData,nData hold the content of the new entry. nZero extra zero bytes +** are appended to the end of the content when constructing the entry. +** +** This object is used to pass information into sqlite3BtreeInsert(). The +** same information used to be passed as five separate parameters. But placing +** the information into this object helps to keep the interface more +** organized and understandable, and it also helps the resulting code to +** run a little faster by using fewer registers for parameter passing. +*/ +struct BtreePayload { + const void *pKey; /* Key content for indexes. NULL for tables */ + sqlite3_int64 nKey; /* Size of pKey for indexes. PRIMARY KEY for tabs */ + const void *pData; /* Data for tables. NULL for indexes */ + struct Mem *aMem; /* First of nMem value in the unpacked pKey */ + u16 nMem; /* Number of aMem[] value. Might be zero */ + int nData; /* Size of pData. 0 if none. */ + int nZero; /* Extra zero data appended after pData,nData */ +}; + +SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const BtreePayload *pPayload, + int flags, int seekResult); SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor*, int *pRes); SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor*, int *pRes); SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int *pRes); SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*); SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int *pRes); -SQLITE_PRIVATE int sqlite3BtreeKeySize(BtCursor*, i64 *pSize); -SQLITE_PRIVATE int sqlite3BtreeKey(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE const void *sqlite3BtreeKeyFetch(BtCursor*, u32 *pAmt); -SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor*, u32 *pAmt); -SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor*, u32 *pSize); -SQLITE_PRIVATE int sqlite3BtreeData(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE void sqlite3BtreeSetCachedRowid(BtCursor*, sqlite3_int64); -SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor*); +SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*); +SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor*, u32 offset, u32 amt, void*); +SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt); +SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*); SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*); SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*); +#ifndef SQLITE_OMIT_INCRBLOB +SQLITE_PRIVATE int sqlite3BtreePayloadChecked(BtCursor*, u32 offset, u32 amt, void*); SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*); -SQLITE_PRIVATE void sqlite3BtreeCacheOverflow(BtCursor *); +SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *); +#endif SQLITE_PRIVATE void sqlite3BtreeClearCursor(BtCursor *); SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBt, int iVersion); -SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *, unsigned int mask); +SQLITE_PRIVATE int sqlite3BtreeCursorHasHint(BtCursor*, unsigned int mask); +SQLITE_PRIVATE int sqlite3BtreeIsReadonly(Btree *pBt); +SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void); #ifndef NDEBUG SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*); #endif +SQLITE_PRIVATE int sqlite3BtreeCursorIsValidNN(BtCursor*); #ifndef SQLITE_OMIT_BTREECOUNT SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *, i64 *); @@ -8908,15 +12527,19 @@ SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree*, int, int *, int *); #ifndef SQLITE_OMIT_SHARED_CACHE SQLITE_PRIVATE void sqlite3BtreeEnter(Btree*); SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3*); +SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*); +SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*); +SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree*); #else # define sqlite3BtreeEnter(X) # define sqlite3BtreeEnterAll(X) +# define sqlite3BtreeSharable(X) 0 +# define sqlite3BtreeEnterCursor(X) +# define sqlite3BtreeConnectionCount(X) 1 #endif #if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE -SQLITE_PRIVATE int sqlite3BtreeSharable(Btree*); SQLITE_PRIVATE void sqlite3BtreeLeave(Btree*); -SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor*); SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor*); SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3*); #ifndef NDEBUG @@ -8927,9 +12550,7 @@ SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*); #endif #else -# define sqlite3BtreeSharable(X) 0 # define sqlite3BtreeLeave(X) -# define sqlite3BtreeEnterCursor(X) # define sqlite3BtreeLeaveCursor(X) # define sqlite3BtreeLeaveAll(X) @@ -8939,7 +12560,7 @@ SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*); #endif -#endif /* _BTREE_H_ */ +#endif /* SQLITE_BTREE_H */ /************** End of btree.h ***********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ @@ -8962,8 +12583,8 @@ SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*); ** or VDBE. The VDBE implements an abstract machine that runs a ** simple program to access and modify the underlying database. */ -#ifndef _SQLITE_VDBE_H_ -#define _SQLITE_VDBE_H_ +#ifndef SQLITE_VDBE_H +#define SQLITE_VDBE_H /* #include */ /* @@ -8988,33 +12609,40 @@ typedef struct SubProgram SubProgram; struct VdbeOp { u8 opcode; /* What operation to perform */ signed char p4type; /* One of the P4_xxx constants for p4 */ - u8 opflags; /* Mask of the OPFLG_* flags in opcodes.h */ - u8 p5; /* Fifth parameter is an unsigned character */ + u16 p5; /* Fifth parameter is an unsigned 16-bit integer */ int p1; /* First operand */ int p2; /* Second parameter (often the jump destination) */ int p3; /* The third parameter */ - union { /* fourth parameter */ + union p4union { /* fourth parameter */ int i; /* Integer value if p4type==P4_INT32 */ void *p; /* Generic pointer */ char *z; /* Pointer to data for string (char array) types */ i64 *pI64; /* Used when p4type is P4_INT64 */ double *pReal; /* Used when p4type is P4_REAL */ FuncDef *pFunc; /* Used when p4type is P4_FUNCDEF */ + sqlite3_context *pCtx; /* Used when p4type is P4_FUNCCTX */ CollSeq *pColl; /* Used when p4type is P4_COLLSEQ */ Mem *pMem; /* Used when p4type is P4_MEM */ VTable *pVtab; /* Used when p4type is P4_VTAB */ KeyInfo *pKeyInfo; /* Used when p4type is P4_KEYINFO */ int *ai; /* Used when p4type is P4_INTARRAY */ SubProgram *pProgram; /* Used when p4type is P4_SUBPROGRAM */ + Table *pTab; /* Used when p4type is P4_TABLE */ +#ifdef SQLITE_ENABLE_CURSOR_HINTS + Expr *pExpr; /* Used when p4type is P4_EXPR */ +#endif int (*xAdvance)(BtCursor *, int *); } p4; #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS char *zComment; /* Comment to improve readability */ #endif #ifdef VDBE_PROFILE - int cnt; /* Number of times this instruction was executed */ + u32 cnt; /* Number of times this instruction was executed */ u64 cycles; /* Total time spent executing this instruction */ #endif +#ifdef SQLITE_VDBE_COVERAGE + int iSrcLine; /* Source-code line that generated this opcode */ +#endif }; typedef struct VdbeOp VdbeOp; @@ -9027,7 +12655,6 @@ struct SubProgram { int nOp; /* Elements in aOp[] */ int nMem; /* Number of memory cells required */ int nCsr; /* Number of cursors required */ - int nOnce; /* Number of OP_Once instructions */ void *token; /* id that may be used to recursive triggers */ SubProgram *pNext; /* Next sub-program already visited */ }; @@ -9050,19 +12677,21 @@ typedef struct VdbeOpList VdbeOpList; #define P4_NOTUSED 0 /* The P4 parameter is not used */ #define P4_DYNAMIC (-1) /* Pointer to a string obtained from sqliteMalloc() */ #define P4_STATIC (-2) /* Pointer to a static string */ -#define P4_COLLSEQ (-4) /* P4 is a pointer to a CollSeq structure */ -#define P4_FUNCDEF (-5) /* P4 is a pointer to a FuncDef structure */ -#define P4_KEYINFO (-6) /* P4 is a pointer to a KeyInfo structure */ -#define P4_MEM (-8) /* P4 is a pointer to a Mem* structure */ +#define P4_COLLSEQ (-3) /* P4 is a pointer to a CollSeq structure */ +#define P4_FUNCDEF (-4) /* P4 is a pointer to a FuncDef structure */ +#define P4_KEYINFO (-5) /* P4 is a pointer to a KeyInfo structure */ +#define P4_EXPR (-6) /* P4 is a pointer to an Expr tree */ +#define P4_MEM (-7) /* P4 is a pointer to a Mem* structure */ #define P4_TRANSIENT 0 /* P4 is a pointer to a transient string */ -#define P4_VTAB (-10) /* P4 is a pointer to an sqlite3_vtab structure */ -#define P4_MPRINTF (-11) /* P4 is a string obtained from sqlite3_mprintf() */ -#define P4_REAL (-12) /* P4 is a 64-bit floating point value */ -#define P4_INT64 (-13) /* P4 is a 64-bit signed integer */ -#define P4_INT32 (-14) /* P4 is a 32-bit signed integer */ -#define P4_INTARRAY (-15) /* P4 is a vector of 32-bit integers */ -#define P4_SUBPROGRAM (-18) /* P4 is a pointer to a SubProgram structure */ -#define P4_ADVANCE (-19) /* P4 is a pointer to BtreeNext() or BtreePrev() */ +#define P4_VTAB (-8) /* P4 is a pointer to an sqlite3_vtab structure */ +#define P4_REAL (-9) /* P4 is a 64-bit floating point value */ +#define P4_INT64 (-10) /* P4 is a 64-bit signed integer */ +#define P4_INT32 (-11) /* P4 is a 32-bit signed integer */ +#define P4_INTARRAY (-12) /* P4 is a vector of 32-bit integers */ +#define P4_SUBPROGRAM (-13) /* P4 is a pointer to a SubProgram structure */ +#define P4_ADVANCE (-14) /* P4 is a pointer to BtreeNext() or BtreePrev() */ +#define P4_TABLE (-15) /* P4 is a pointer to a Table structure */ +#define P4_FUNCCTX (-16) /* P4 is a pointer to an sqlite3_context object */ /* Error message codes for OP_Halt */ #define P5_ConstraintNotNull 1 @@ -9104,193 +12733,210 @@ typedef struct VdbeOpList VdbeOpList; /************** Include opcodes.h in the middle of vdbe.h ********************/ /************** Begin file opcodes.h *****************************************/ /* Automatically generated. Do not edit */ -/* See the mkopcodeh.awk script for details */ -#define OP_Function 1 /* synopsis: r[P3]=func(r[P2@P5]) */ -#define OP_Savepoint 2 -#define OP_AutoCommit 3 -#define OP_Transaction 4 -#define OP_SorterNext 5 -#define OP_PrevIfOpen 6 -#define OP_NextIfOpen 7 -#define OP_Prev 8 -#define OP_Next 9 -#define OP_AggStep 10 /* synopsis: accum=r[P3] step(r[P2@P5]) */ -#define OP_Checkpoint 11 -#define OP_JournalMode 12 -#define OP_Vacuum 13 -#define OP_VFilter 14 /* synopsis: iPlan=r[P3] zPlan='P4' */ -#define OP_VUpdate 15 /* synopsis: data=r[P3@P2] */ -#define OP_Goto 16 -#define OP_Gosub 17 -#define OP_Return 18 +/* See the tool/mkopcodeh.tcl script for details */ +#define OP_Savepoint 0 +#define OP_AutoCommit 1 +#define OP_Transaction 2 +#define OP_SorterNext 3 +#define OP_PrevIfOpen 4 +#define OP_NextIfOpen 5 +#define OP_Prev 6 +#define OP_Next 7 +#define OP_Checkpoint 8 +#define OP_JournalMode 9 +#define OP_Vacuum 10 +#define OP_VFilter 11 /* synopsis: iplan=r[P3] zplan='P4' */ +#define OP_VUpdate 12 /* synopsis: data=r[P3@P2] */ +#define OP_Goto 13 +#define OP_Gosub 14 +#define OP_InitCoroutine 15 +#define OP_Yield 16 +#define OP_MustBeInt 17 +#define OP_Jump 18 #define OP_Not 19 /* same as TK_NOT, synopsis: r[P2]= !r[P1] */ -#define OP_Yield 20 -#define OP_HaltIfNull 21 /* synopsis: if r[P3] null then halt */ -#define OP_Halt 22 -#define OP_Integer 23 /* synopsis: r[P2]=P1 */ -#define OP_Int64 24 /* synopsis: r[P2]=P4 */ -#define OP_String 25 /* synopsis: r[P2]='P4' (len=P1) */ -#define OP_Null 26 /* synopsis: r[P2..P3]=NULL */ -#define OP_Blob 27 /* synopsis: r[P2]=P4 (len=P1) */ -#define OP_Variable 28 /* synopsis: r[P2]=parameter(P1,P4) */ -#define OP_Move 29 /* synopsis: r[P2@P3]=r[P1@P3] */ -#define OP_Copy 30 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */ -#define OP_SCopy 31 /* synopsis: r[P2]=r[P1] */ -#define OP_ResultRow 32 /* synopsis: output=r[P1@P2] */ -#define OP_CollSeq 33 -#define OP_AddImm 34 /* synopsis: r[P1]=r[P1]+P2 */ -#define OP_MustBeInt 35 -#define OP_RealAffinity 36 -#define OP_Permutation 37 -#define OP_Compare 38 -#define OP_Jump 39 -#define OP_Once 40 -#define OP_If 41 -#define OP_IfNot 42 -#define OP_Column 43 /* synopsis: r[P3]=PX */ -#define OP_Affinity 44 /* synopsis: affinity(r[P1@P2]) */ -#define OP_MakeRecord 45 /* synopsis: r[P3]=mkrec(r[P1@P2]) */ -#define OP_Count 46 /* synopsis: r[P2]=count() */ -#define OP_ReadCookie 47 -#define OP_SetCookie 48 -#define OP_VerifyCookie 49 -#define OP_OpenRead 50 /* synopsis: root=P2 iDb=P3 */ -#define OP_OpenWrite 51 /* synopsis: root=P2 iDb=P3 */ -#define OP_OpenAutoindex 52 /* synopsis: nColumn=P2 */ -#define OP_OpenEphemeral 53 /* synopsis: nColumn=P2 */ -#define OP_SorterOpen 54 -#define OP_OpenPseudo 55 /* synopsis: content in r[P2@P3] */ -#define OP_Close 56 -#define OP_SeekLt 57 /* synopsis: key=r[P3@P4] */ -#define OP_SeekLe 58 /* synopsis: key=r[P3@P4] */ -#define OP_SeekGe 59 /* synopsis: key=r[P3@P4] */ -#define OP_SeekGt 60 /* synopsis: key=r[P3@P4] */ -#define OP_Seek 61 /* synopsis: intkey=r[P2] */ -#define OP_NoConflict 62 /* synopsis: key=r[P3@P4] */ -#define OP_NotFound 63 /* synopsis: key=r[P3@P4] */ -#define OP_Found 64 /* synopsis: key=r[P3@P4] */ -#define OP_NotExists 65 /* synopsis: intkey=r[P3] */ -#define OP_Sequence 66 /* synopsis: r[P2]=rowid */ -#define OP_NewRowid 67 /* synopsis: r[P2]=rowid */ -#define OP_Insert 68 /* synopsis: intkey=r[P3] data=r[P2] */ -#define OP_InsertInt 69 /* synopsis: intkey=P3 data=r[P2] */ -#define OP_Delete 70 -#define OP_Or 71 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */ -#define OP_And 72 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */ -#define OP_ResetCount 73 -#define OP_SorterCompare 74 /* synopsis: if key(P1)!=rtrim(r[P3],P4) goto P2 */ -#define OP_SorterData 75 /* synopsis: r[P2]=data */ -#define OP_IsNull 76 /* same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */ -#define OP_NotNull 77 /* same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */ -#define OP_Ne 78 /* same as TK_NE, synopsis: if r[P1]!=r[P3] goto P2 */ -#define OP_Eq 79 /* same as TK_EQ, synopsis: if r[P1]==r[P3] goto P2 */ -#define OP_Gt 80 /* same as TK_GT, synopsis: if r[P1]>r[P3] goto P2 */ -#define OP_Le 81 /* same as TK_LE, synopsis: if r[P1]<=r[P3] goto P2 */ -#define OP_Lt 82 /* same as TK_LT, synopsis: if r[P1]=r[P3] goto P2 */ -#define OP_RowKey 84 /* synopsis: r[P2]=key */ -#define OP_BitAnd 85 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */ -#define OP_BitOr 86 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */ -#define OP_ShiftLeft 87 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<>r[P1] */ -#define OP_Add 89 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */ -#define OP_Subtract 90 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */ -#define OP_Multiply 91 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */ -#define OP_Divide 92 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */ -#define OP_Remainder 93 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */ -#define OP_Concat 94 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */ -#define OP_RowData 95 /* synopsis: r[P2]=data */ -#define OP_BitNot 96 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */ +#define OP_Once 20 +#define OP_If 21 +#define OP_IfNot 22 +#define OP_SeekLT 23 /* synopsis: key=r[P3@P4] */ +#define OP_SeekLE 24 /* synopsis: key=r[P3@P4] */ +#define OP_SeekGE 25 /* synopsis: key=r[P3@P4] */ +#define OP_SeekGT 26 /* synopsis: key=r[P3@P4] */ +#define OP_Or 27 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */ +#define OP_And 28 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */ +#define OP_NoConflict 29 /* synopsis: key=r[P3@P4] */ +#define OP_NotFound 30 /* synopsis: key=r[P3@P4] */ +#define OP_Found 31 /* synopsis: key=r[P3@P4] */ +#define OP_SeekRowid 32 /* synopsis: intkey=r[P3] */ +#define OP_NotExists 33 /* synopsis: intkey=r[P3] */ +#define OP_IsNull 34 /* same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */ +#define OP_NotNull 35 /* same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */ +#define OP_Ne 36 /* same as TK_NE, synopsis: IF r[P3]!=r[P1] */ +#define OP_Eq 37 /* same as TK_EQ, synopsis: IF r[P3]==r[P1] */ +#define OP_Gt 38 /* same as TK_GT, synopsis: IF r[P3]>r[P1] */ +#define OP_Le 39 /* same as TK_LE, synopsis: IF r[P3]<=r[P1] */ +#define OP_Lt 40 /* same as TK_LT, synopsis: IF r[P3]=r[P1] */ +#define OP_ElseNotEq 42 /* same as TK_ESCAPE */ +#define OP_BitAnd 43 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */ +#define OP_BitOr 44 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */ +#define OP_ShiftLeft 45 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<>r[P1] */ +#define OP_Add 47 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */ +#define OP_Subtract 48 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */ +#define OP_Multiply 49 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */ +#define OP_Divide 50 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */ +#define OP_Remainder 51 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */ +#define OP_Concat 52 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */ +#define OP_Last 53 +#define OP_BitNot 54 /* same as TK_BITNOT, synopsis: r[P1]= ~r[P1] */ +#define OP_SorterSort 55 +#define OP_Sort 56 +#define OP_Rewind 57 +#define OP_IdxLE 58 /* synopsis: key=r[P3@P4] */ +#define OP_IdxGT 59 /* synopsis: key=r[P3@P4] */ +#define OP_IdxLT 60 /* synopsis: key=r[P3@P4] */ +#define OP_IdxGE 61 /* synopsis: key=r[P3@P4] */ +#define OP_RowSetRead 62 /* synopsis: r[P3]=rowset(P1) */ +#define OP_RowSetTest 63 /* synopsis: if r[P3] in rowset(P1) goto P2 */ +#define OP_Program 64 +#define OP_FkIfZero 65 /* synopsis: if fkctr[P1]==0 goto P2 */ +#define OP_IfPos 66 /* synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */ +#define OP_IfNotZero 67 /* synopsis: if r[P1]!=0 then r[P1]--, goto P2 */ +#define OP_DecrJumpZero 68 /* synopsis: if (--r[P1])==0 goto P2 */ +#define OP_IncrVacuum 69 +#define OP_VNext 70 +#define OP_Init 71 /* synopsis: Start at P2 */ +#define OP_Return 72 +#define OP_EndCoroutine 73 +#define OP_HaltIfNull 74 /* synopsis: if r[P3]=null halt */ +#define OP_Halt 75 +#define OP_Integer 76 /* synopsis: r[P2]=P1 */ +#define OP_Int64 77 /* synopsis: r[P2]=P4 */ +#define OP_String 78 /* synopsis: r[P2]='P4' (len=P1) */ +#define OP_Null 79 /* synopsis: r[P2..P3]=NULL */ +#define OP_SoftNull 80 /* synopsis: r[P1]=NULL */ +#define OP_Blob 81 /* synopsis: r[P2]=P4 (len=P1) */ +#define OP_Variable 82 /* synopsis: r[P2]=parameter(P1,P4) */ +#define OP_Move 83 /* synopsis: r[P2@P3]=r[P1@P3] */ +#define OP_Copy 84 /* synopsis: r[P2@P3+1]=r[P1@P3+1] */ +#define OP_SCopy 85 /* synopsis: r[P2]=r[P1] */ +#define OP_IntCopy 86 /* synopsis: r[P2]=r[P1] */ +#define OP_ResultRow 87 /* synopsis: output=r[P1@P2] */ +#define OP_CollSeq 88 +#define OP_Function0 89 /* synopsis: r[P3]=func(r[P2@P5]) */ +#define OP_Function 90 /* synopsis: r[P3]=func(r[P2@P5]) */ +#define OP_AddImm 91 /* synopsis: r[P1]=r[P1]+P2 */ +#define OP_RealAffinity 92 +#define OP_Cast 93 /* synopsis: affinity(r[P1]) */ +#define OP_Permutation 94 +#define OP_Compare 95 /* synopsis: r[P1@P3] <-> r[P2@P3] */ +#define OP_Column 96 /* synopsis: r[P3]=PX */ #define OP_String8 97 /* same as TK_STRING, synopsis: r[P2]='P4' */ -#define OP_Rowid 98 /* synopsis: r[P2]=rowid */ -#define OP_NullRow 99 -#define OP_Last 100 -#define OP_SorterSort 101 -#define OP_Sort 102 -#define OP_Rewind 103 -#define OP_SorterInsert 104 -#define OP_IdxInsert 105 /* synopsis: key=r[P2] */ -#define OP_IdxDelete 106 /* synopsis: key=r[P2@P3] */ -#define OP_IdxRowid 107 /* synopsis: r[P2]=rowid */ -#define OP_IdxLT 108 /* synopsis: key=r[P3@P4] */ -#define OP_IdxGE 109 /* synopsis: key=r[P3@P4] */ -#define OP_Destroy 110 -#define OP_Clear 111 -#define OP_CreateIndex 112 /* synopsis: r[P2]=root iDb=P1 */ -#define OP_CreateTable 113 /* synopsis: r[P2]=root iDb=P1 */ -#define OP_ParseSchema 114 -#define OP_LoadAnalysis 115 -#define OP_DropTable 116 -#define OP_DropIndex 117 -#define OP_DropTrigger 118 -#define OP_IntegrityCk 119 -#define OP_RowSetAdd 120 /* synopsis: rowset(P1)=r[P2] */ -#define OP_RowSetRead 121 /* synopsis: r[P3]=rowset(P1) */ -#define OP_RowSetTest 122 /* synopsis: if r[P3] in rowset(P1) goto P2 */ -#define OP_Program 123 -#define OP_Param 124 -#define OP_FkCounter 125 /* synopsis: fkctr[P1]+=P2 */ -#define OP_FkIfZero 126 /* synopsis: if fkctr[P1]==0 goto P2 */ -#define OP_MemMax 127 /* synopsis: r[P1]=max(r[P1],r[P2]) */ -#define OP_IfPos 128 /* synopsis: if r[P1]>0 goto P2 */ -#define OP_IfNeg 129 /* synopsis: if r[P1]<0 goto P2 */ -#define OP_IfZero 130 /* synopsis: r[P1]+=P3, if r[P1]==0 goto P2 */ -#define OP_AggFinal 131 /* synopsis: accum=r[P1] N=P2 */ -#define OP_IncrVacuum 132 -#define OP_Real 133 /* same as TK_FLOAT, synopsis: r[P2]=P4 */ -#define OP_Expire 134 -#define OP_TableLock 135 /* synopsis: iDb=P1 root=P2 write=P3 */ -#define OP_VBegin 136 -#define OP_VCreate 137 -#define OP_VDestroy 138 -#define OP_VOpen 139 -#define OP_VColumn 140 /* synopsis: r[P3]=vcolumn(P2) */ -#define OP_VNext 141 -#define OP_VRename 142 -#define OP_ToText 143 /* same as TK_TO_TEXT */ -#define OP_ToBlob 144 /* same as TK_TO_BLOB */ -#define OP_ToNumeric 145 /* same as TK_TO_NUMERIC */ -#define OP_ToInt 146 /* same as TK_TO_INT */ -#define OP_ToReal 147 /* same as TK_TO_REAL */ -#define OP_Pagecount 148 -#define OP_MaxPgcnt 149 -#define OP_Trace 150 -#define OP_Noop 151 -#define OP_Explain 152 - +#define OP_Affinity 98 /* synopsis: affinity(r[P1@P2]) */ +#define OP_MakeRecord 99 /* synopsis: r[P3]=mkrec(r[P1@P2]) */ +#define OP_Count 100 /* synopsis: r[P2]=count() */ +#define OP_ReadCookie 101 +#define OP_SetCookie 102 +#define OP_ReopenIdx 103 /* synopsis: root=P2 iDb=P3 */ +#define OP_OpenRead 104 /* synopsis: root=P2 iDb=P3 */ +#define OP_OpenWrite 105 /* synopsis: root=P2 iDb=P3 */ +#define OP_OpenAutoindex 106 /* synopsis: nColumn=P2 */ +#define OP_OpenEphemeral 107 /* synopsis: nColumn=P2 */ +#define OP_SorterOpen 108 +#define OP_SequenceTest 109 /* synopsis: if( cursor[P1].ctr++ ) pc = P2 */ +#define OP_OpenPseudo 110 /* synopsis: P3 columns in r[P2] */ +#define OP_Close 111 +#define OP_ColumnsUsed 112 +#define OP_Sequence 113 /* synopsis: r[P2]=cursor[P1].ctr++ */ +#define OP_NewRowid 114 /* synopsis: r[P2]=rowid */ +#define OP_Insert 115 /* synopsis: intkey=r[P3] data=r[P2] */ +#define OP_InsertInt 116 /* synopsis: intkey=P3 data=r[P2] */ +#define OP_Delete 117 +#define OP_ResetCount 118 +#define OP_SorterCompare 119 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */ +#define OP_SorterData 120 /* synopsis: r[P2]=data */ +#define OP_RowData 121 /* synopsis: r[P2]=data */ +#define OP_Rowid 122 /* synopsis: r[P2]=rowid */ +#define OP_NullRow 123 +#define OP_SorterInsert 124 /* synopsis: key=r[P2] */ +#define OP_IdxInsert 125 /* synopsis: key=r[P2] */ +#define OP_IdxDelete 126 /* synopsis: key=r[P2@P3] */ +#define OP_Seek 127 /* synopsis: Move P3 to P1.rowid */ +#define OP_IdxRowid 128 /* synopsis: r[P2]=rowid */ +#define OP_Destroy 129 +#define OP_Clear 130 +#define OP_ResetSorter 131 +#define OP_Real 132 /* same as TK_FLOAT, synopsis: r[P2]=P4 */ +#define OP_CreateIndex 133 /* synopsis: r[P2]=root iDb=P1 */ +#define OP_CreateTable 134 /* synopsis: r[P2]=root iDb=P1 */ +#define OP_ParseSchema 135 +#define OP_LoadAnalysis 136 +#define OP_DropTable 137 +#define OP_DropIndex 138 +#define OP_DropTrigger 139 +#define OP_IntegrityCk 140 +#define OP_RowSetAdd 141 /* synopsis: rowset(P1)=r[P2] */ +#define OP_Param 142 +#define OP_FkCounter 143 /* synopsis: fkctr[P1]+=P2 */ +#define OP_MemMax 144 /* synopsis: r[P1]=max(r[P1],r[P2]) */ +#define OP_OffsetLimit 145 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */ +#define OP_AggStep0 146 /* synopsis: accum=r[P3] step(r[P2@P5]) */ +#define OP_AggStep 147 /* synopsis: accum=r[P3] step(r[P2@P5]) */ +#define OP_AggFinal 148 /* synopsis: accum=r[P1] N=P2 */ +#define OP_Expire 149 +#define OP_TableLock 150 /* synopsis: iDb=P1 root=P2 write=P3 */ +#define OP_VBegin 151 +#define OP_VCreate 152 +#define OP_VDestroy 153 +#define OP_VOpen 154 +#define OP_VColumn 155 /* synopsis: r[P3]=vcolumn(P2) */ +#define OP_VRename 156 +#define OP_Pagecount 157 +#define OP_MaxPgcnt 158 +#define OP_CursorHint 159 +#define OP_Noop 160 +#define OP_Explain 161 /* Properties such as "out2" or "jump" that are specified in ** comments following the "case" for each opcode in the vdbe.c ** are encoded into bitvectors as follows: */ -#define OPFLG_JUMP 0x0001 /* jump: P2 holds jmp target */ -#define OPFLG_OUT2_PRERELEASE 0x0002 /* out2-prerelease: */ -#define OPFLG_IN1 0x0004 /* in1: P1 is an input */ -#define OPFLG_IN2 0x0008 /* in2: P2 is an input */ -#define OPFLG_IN3 0x0010 /* in3: P3 is an input */ -#define OPFLG_OUT2 0x0020 /* out2: P2 is an output */ -#define OPFLG_OUT3 0x0040 /* out3: P3 is an output */ +#define OPFLG_JUMP 0x01 /* jump: P2 holds jmp target */ +#define OPFLG_IN1 0x02 /* in1: P1 is an input */ +#define OPFLG_IN2 0x04 /* in2: P2 is an input */ +#define OPFLG_IN3 0x08 /* in3: P3 is an input */ +#define OPFLG_OUT2 0x10 /* out2: P2 is an output */ +#define OPFLG_OUT3 0x20 /* out3: P3 is an output */ #define OPFLG_INITIALIZER {\ -/* 0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,\ -/* 8 */ 0x01, 0x01, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00,\ -/* 16 */ 0x01, 0x01, 0x04, 0x24, 0x04, 0x10, 0x00, 0x02,\ -/* 24 */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00, 0x20,\ -/* 32 */ 0x00, 0x00, 0x04, 0x05, 0x04, 0x00, 0x00, 0x01,\ -/* 40 */ 0x01, 0x05, 0x05, 0x00, 0x00, 0x00, 0x02, 0x02,\ -/* 48 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 56 */ 0x00, 0x11, 0x11, 0x11, 0x11, 0x08, 0x11, 0x11,\ -/* 64 */ 0x11, 0x11, 0x02, 0x02, 0x00, 0x00, 0x00, 0x4c,\ -/* 72 */ 0x4c, 0x00, 0x00, 0x00, 0x05, 0x05, 0x15, 0x15,\ -/* 80 */ 0x15, 0x15, 0x15, 0x15, 0x00, 0x4c, 0x4c, 0x4c,\ -/* 88 */ 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x4c, 0x00,\ -/* 96 */ 0x24, 0x02, 0x02, 0x00, 0x01, 0x01, 0x01, 0x01,\ -/* 104 */ 0x08, 0x08, 0x00, 0x02, 0x01, 0x01, 0x02, 0x00,\ -/* 112 */ 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ -/* 120 */ 0x0c, 0x45, 0x15, 0x01, 0x02, 0x00, 0x01, 0x08,\ -/* 128 */ 0x05, 0x05, 0x05, 0x00, 0x01, 0x02, 0x00, 0x00,\ -/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x04,\ -/* 144 */ 0x04, 0x04, 0x04, 0x04, 0x02, 0x02, 0x00, 0x00,\ -/* 152 */ 0x00,} +/* 0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,\ +/* 8 */ 0x00, 0x10, 0x00, 0x01, 0x00, 0x01, 0x01, 0x01,\ +/* 16 */ 0x03, 0x03, 0x01, 0x12, 0x01, 0x03, 0x03, 0x09,\ +/* 24 */ 0x09, 0x09, 0x09, 0x26, 0x26, 0x09, 0x09, 0x09,\ +/* 32 */ 0x09, 0x09, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\ +/* 40 */ 0x0b, 0x0b, 0x01, 0x26, 0x26, 0x26, 0x26, 0x26,\ +/* 48 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x01, 0x12, 0x01,\ +/* 56 */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x23, 0x0b,\ +/* 64 */ 0x01, 0x01, 0x03, 0x03, 0x03, 0x01, 0x01, 0x01,\ +/* 72 */ 0x02, 0x02, 0x08, 0x00, 0x10, 0x10, 0x10, 0x10,\ +/* 80 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00,\ +/* 88 */ 0x00, 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00,\ +/* 96 */ 0x00, 0x10, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\ +/* 104 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ +/* 112 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,\ +/* 120 */ 0x00, 0x00, 0x10, 0x00, 0x04, 0x04, 0x00, 0x00,\ +/* 128 */ 0x10, 0x10, 0x00, 0x00, 0x10, 0x10, 0x10, 0x00,\ +/* 136 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x10, 0x00,\ +/* 144 */ 0x04, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\ +/* 152 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00,\ +/* 160 */ 0x00, 0x00,} + +/* The sqlite3P2Values() routine is able to run faster if it knows +** the value of the largest JUMP opcode. The smaller the maximum +** JUMP opcode the better, so the mkopcodeh.tcl script that +** generated this include file strives to group all JUMP opcodes +** together near the beginning of the list. +*/ +#define SQLITE_MX_JUMP_OPCODE 71 /* Maximum JUMP opcode */ /************** End of opcodes.h *********************************************/ /************** Continuing where we left off in vdbe.h ***********************/ @@ -9303,24 +12949,39 @@ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse*); SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int); +SQLITE_PRIVATE int sqlite3VdbeGoto(Vdbe*,int); +SQLITE_PRIVATE int sqlite3VdbeLoadString(Vdbe*,int,const char*); +SQLITE_PRIVATE void sqlite3VdbeMultiLoad(Vdbe*,int,const char*,...); SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int); +SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int); -SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp); +SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe*,int); +#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS) +SQLITE_PRIVATE void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N); +SQLITE_PRIVATE void sqlite3VdbeVerifyNoResultRow(Vdbe *p); +#else +# define sqlite3VdbeVerifyNoMallocRequired(A,B) +# define sqlite3VdbeVerifyNoResultRow(A) +#endif +SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno); SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*); +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8); SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1); SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2); SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3); -SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u8 P5); +SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5); SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr); -SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe*, int addr); +SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr); SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op); SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N); +SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type); SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*); SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe*, int); SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe*, int); SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe*); +SQLITE_PRIVATE void sqlite3VdbeReusable(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeClearObject(sqlite3*,Vdbe*); SQLITE_PRIVATE void sqlite3VdbeMakeReady(Vdbe*,Parse*); @@ -9345,10 +13006,15 @@ SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe*, int); #ifndef SQLITE_OMIT_TRACE SQLITE_PRIVATE char *sqlite3VdbeExpandSql(Vdbe*, const char*); #endif +SQLITE_PRIVATE int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*); SQLITE_PRIVATE void sqlite3VdbeRecordUnpack(KeyInfo*,int,const void*,UnpackedRecord*); SQLITE_PRIVATE int sqlite3VdbeRecordCompare(int,const void*,UnpackedRecord*); -SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo *, char *, int, char **); +SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(int, const void *, UnpackedRecord *, int); +SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo*); + +typedef int (*RecordCompare)(int,const void*,UnpackedRecord*); +SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord*); #ifndef SQLITE_OMIT_TRIGGER SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *); @@ -9377,8 +13043,51 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe*, const char*, ...); # define VdbeModuleComment(X) #endif +/* +** The VdbeCoverage macros are used to set a coverage testing point +** for VDBE branch instructions. The coverage testing points are line +** numbers in the sqlite3.c source file. VDBE branch coverage testing +** only works with an amalagmation build. That's ok since a VDBE branch +** coverage build designed for testing the test suite only. No application +** should ever ship with VDBE branch coverage measuring turned on. +** +** VdbeCoverage(v) // Mark the previously coded instruction +** // as a branch +** +** VdbeCoverageIf(v, conditional) // Mark previous if conditional true +** +** VdbeCoverageAlwaysTaken(v) // Previous branch is always taken +** +** VdbeCoverageNeverTaken(v) // Previous branch is never taken +** +** Every VDBE branch operation must be tagged with one of the macros above. +** If not, then when "make test" is run with -DSQLITE_VDBE_COVERAGE and +** -DSQLITE_DEBUG then an ALWAYS() will fail in the vdbeTakeBranch() +** routine in vdbe.c, alerting the developer to the missed tag. +*/ +#ifdef SQLITE_VDBE_COVERAGE +SQLITE_PRIVATE void sqlite3VdbeSetLineNumber(Vdbe*,int); +# define VdbeCoverage(v) sqlite3VdbeSetLineNumber(v,__LINE__) +# define VdbeCoverageIf(v,x) if(x)sqlite3VdbeSetLineNumber(v,__LINE__) +# define VdbeCoverageAlwaysTaken(v) sqlite3VdbeSetLineNumber(v,2); +# define VdbeCoverageNeverTaken(v) sqlite3VdbeSetLineNumber(v,1); +# define VDBE_OFFSET_LINENO(x) (__LINE__+x) +#else +# define VdbeCoverage(v) +# define VdbeCoverageIf(v,x) +# define VdbeCoverageAlwaysTaken(v) +# define VdbeCoverageNeverTaken(v) +# define VDBE_OFFSET_LINENO(x) 0 #endif +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +SQLITE_PRIVATE void sqlite3VdbeScanStatus(Vdbe*, int, int, int, LogEst, const char*); +#else +# define sqlite3VdbeScanStatus(a,b,c,d,e) +#endif + +#endif /* SQLITE_VDBE_H */ + /************** End of vdbe.h ************************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ /************** Include pager.h in the middle of sqliteInt.h *****************/ @@ -9399,8 +13108,8 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe*, const char*, ...); ** at a time and provides a journal for rollback. */ -#ifndef _PAGER_H_ -#define _PAGER_H_ +#ifndef SQLITE_PAGER_H +#define SQLITE_PAGER_H /* ** Default maximum size for persistent journal files. A negative @@ -9453,7 +13162,11 @@ typedef struct PgHdr DbPage; #define PAGER_LOCKINGMODE_EXCLUSIVE 1 /* -** Numeric constants that encode the journalmode. +** Numeric constants that encode the journalmode. +** +** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY) +** are exposed in the API via the "PRAGMA journal_mode" command and +** therefore cannot be changed without a compatibility break. */ #define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ #define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ @@ -9464,22 +13177,28 @@ typedef struct PgHdr DbPage; #define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ /* -** Flags that make up the mask passed to sqlite3PagerAcquire(). +** Flags that make up the mask passed to sqlite3PagerGet(). */ #define PAGER_GET_NOCONTENT 0x01 /* Do not load data from disk */ #define PAGER_GET_READONLY 0x02 /* Read-only page is acceptable */ /* ** Flags for sqlite3PagerSetFlags() +** +** Value constraints (enforced via assert()): +** PAGER_FULLFSYNC == SQLITE_FullFSync +** PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync +** PAGER_CACHE_SPILL == SQLITE_CacheSpill */ #define PAGER_SYNCHRONOUS_OFF 0x01 /* PRAGMA synchronous=OFF */ #define PAGER_SYNCHRONOUS_NORMAL 0x02 /* PRAGMA synchronous=NORMAL */ #define PAGER_SYNCHRONOUS_FULL 0x03 /* PRAGMA synchronous=FULL */ -#define PAGER_SYNCHRONOUS_MASK 0x03 /* Mask for three values above */ -#define PAGER_FULLFSYNC 0x04 /* PRAGMA fullfsync=ON */ -#define PAGER_CKPT_FULLFSYNC 0x08 /* PRAGMA checkpoint_fullfsync=ON */ -#define PAGER_CACHESPILL 0x10 /* PRAGMA cache_spill=ON */ -#define PAGER_FLAGS_MASK 0x1c /* All above except SYNCHRONOUS */ +#define PAGER_SYNCHRONOUS_EXTRA 0x04 /* PRAGMA synchronous=EXTRA */ +#define PAGER_SYNCHRONOUS_MASK 0x07 /* Mask for four values above */ +#define PAGER_FULLFSYNC 0x08 /* PRAGMA fullfsync=ON */ +#define PAGER_CKPT_FULLFSYNC 0x10 /* PRAGMA checkpoint_fullfsync=ON */ +#define PAGER_CACHESPILL 0x20 /* PRAGMA cache_spill=ON */ +#define PAGER_FLAGS_MASK 0x38 /* All above except SYNCHRONOUS */ /* ** The remainder of this file contains the declarations of the functions @@ -9497,14 +13216,18 @@ SQLITE_PRIVATE int sqlite3PagerOpen( int, void(*)(DbPage*) ); -SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager); +SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*); SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*); /* Functions used to configure a Pager object. */ SQLITE_PRIVATE void sqlite3PagerSetBusyhandler(Pager*, int(*)(void *), void *); SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int); +#ifdef SQLITE_HAS_CODEC +SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*); +#endif SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int); SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int); +SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int); SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64); SQLITE_PRIVATE void sqlite3PagerShrink(Pager*); SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned); @@ -9514,10 +13237,10 @@ SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*); SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*); SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64); SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*); +SQLITE_PRIVATE int sqlite3PagerFlush(Pager*); /* Functions used to obtain and release page references. */ -SQLITE_PRIVATE int sqlite3PagerAcquire(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); -#define sqlite3PagerGet(A,B,C) sqlite3PagerAcquire(A,B,C,0) +SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno); SQLITE_PRIVATE void sqlite3PagerRef(DbPage*); SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*); @@ -9544,11 +13267,21 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager); #ifndef SQLITE_OMIT_WAL -SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*); +SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*); SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager); SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager); SQLITE_PRIVATE int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen); -SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager); +SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3*); +# ifdef SQLITE_DIRECT_OVERFLOW_READ +SQLITE_PRIVATE int sqlite3PagerUseWal(Pager *pPager, Pgno); +# endif +# ifdef SQLITE_ENABLE_SNAPSHOT +SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot); +SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot); +SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager); +# endif +#else +# define sqlite3PagerUseWal(x,y) 0 #endif #ifdef SQLITE_ENABLE_ZIPVFS @@ -9557,22 +13290,27 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager); /* Functions used to query pager state and configuration. */ SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*); -SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*); +SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3PagerRefcount(Pager*); +#endif SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*); SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int); -SQLITE_PRIVATE const sqlite3_vfs *sqlite3PagerVfs(Pager*); +SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*); SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*); +SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*); SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*); -SQLITE_PRIVATE int sqlite3PagerNosync(Pager*); SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*); SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*); SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *); -SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *); +SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*); SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *); /* Functions used to truncate the database file. */ SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno); +SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16); + #if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL) SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *); #endif @@ -9592,7 +13330,7 @@ SQLITE_PRIVATE void sqlite3PagerRefdump(Pager*); # define enable_simulated_io_errors() #endif -#endif /* _PAGER_H_ */ +#endif /* SQLITE_PAGER_H */ /************** End of pager.h ***********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ @@ -9626,7 +13364,7 @@ struct PgHdr { sqlite3_pcache_page *pPage; /* Pcache object page handle */ void *pData; /* Page data */ void *pExtra; /* Extra content */ - PgHdr *pDirty; /* Transient list of dirty pages */ + PgHdr *pDirty; /* Transient list of dirty sorted by pgno */ Pager *pPager; /* The pager this page is part of */ Pgno pgno; /* Page number for this page */ #ifdef SQLITE_CHECK_PAGES @@ -9646,14 +13384,15 @@ struct PgHdr { }; /* Bit values for PgHdr.flags */ -#define PGHDR_DIRTY 0x002 /* Page has changed */ -#define PGHDR_NEED_SYNC 0x004 /* Fsync the rollback journal before - ** writing this page to the database */ -#define PGHDR_NEED_READ 0x008 /* Content is unread */ -#define PGHDR_REUSE_UNLIKELY 0x010 /* A hint that reuse is unlikely */ -#define PGHDR_DONT_WRITE 0x020 /* Do not write content to disk */ +#define PGHDR_CLEAN 0x001 /* Page not on the PCache.pDirty list */ +#define PGHDR_DIRTY 0x002 /* Page is on the PCache.pDirty list */ +#define PGHDR_WRITEABLE 0x004 /* Journaled and ready to modify */ +#define PGHDR_NEED_SYNC 0x008 /* Fsync the rollback journal before + ** writing this page to the database */ +#define PGHDR_DONT_WRITE 0x010 /* Do not write content to disk */ +#define PGHDR_MMAP 0x020 /* This is an mmap page object */ -#define PGHDR_MMAP 0x040 /* This is an mmap page object */ +#define PGHDR_WAL_APPEND 0x040 /* Appended to wal file */ /* Initialize and shutdown the page cache subsystem */ SQLITE_PRIVATE int sqlite3PcacheInitialize(void); @@ -9668,7 +13407,7 @@ SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *, int sz, int n); ** Under memory stress, invoke xStress to try to make pages clean. ** Only clean and unpinned pages can be reclaimed. */ -SQLITE_PRIVATE void sqlite3PcacheOpen( +SQLITE_PRIVATE int sqlite3PcacheOpen( int szPage, /* Size of every page */ int szExtra, /* Extra space associated with each page */ int bPurgeable, /* True if pages are on backing store */ @@ -9678,7 +13417,7 @@ SQLITE_PRIVATE void sqlite3PcacheOpen( ); /* Modify the page-size after the cache has been created. */ -SQLITE_PRIVATE void sqlite3PcacheSetPageSize(PCache *, int); +SQLITE_PRIVATE int sqlite3PcacheSetPageSize(PCache *, int); /* Return the size in bytes of a PCache object. Used to preallocate ** storage space. @@ -9688,13 +13427,16 @@ SQLITE_PRIVATE int sqlite3PcacheSize(void); /* One release per successful fetch. Page is pinned until released. ** Reference counted. */ -SQLITE_PRIVATE int sqlite3PcacheFetch(PCache*, Pgno, int createFlag, PgHdr**); +SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch(PCache*, Pgno, int createFlag); +SQLITE_PRIVATE int sqlite3PcacheFetchStress(PCache*, Pgno, sqlite3_pcache_page**); +SQLITE_PRIVATE PgHdr *sqlite3PcacheFetchFinish(PCache*, Pgno, sqlite3_pcache_page *pPage); SQLITE_PRIVATE void sqlite3PcacheRelease(PgHdr*); SQLITE_PRIVATE void sqlite3PcacheDrop(PgHdr*); /* Remove page from cache */ SQLITE_PRIVATE void sqlite3PcacheMakeDirty(PgHdr*); /* Make sure page is marked dirty */ SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr*); /* Mark a single page as clean */ SQLITE_PRIVATE void sqlite3PcacheCleanAll(PCache*); /* Mark all dirty list pages as clean */ +SQLITE_PRIVATE void sqlite3PcacheClearWritable(PCache*); /* Change a page number. Used by incr-vacuum. */ SQLITE_PRIVATE void sqlite3PcacheMove(PgHdr*, Pgno); @@ -9733,6 +13475,11 @@ SQLITE_PRIVATE int sqlite3PcachePagecount(PCache*); SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *)); #endif +#if defined(SQLITE_DEBUG) +/* Check invariants on a PgHdr object */ +SQLITE_PRIVATE int sqlite3PcachePageSanity(PgHdr*); +#endif + /* Set and get the suggested cache-size for the specified pager-cache. ** ** If no global maximum is configured, then the system attempts to limit @@ -9744,6 +13491,13 @@ SQLITE_PRIVATE void sqlite3PcacheSetCachesize(PCache *, int); SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *); #endif +/* Set or get the suggested spill-size for the specified pager-cache. +** +** The spill-size is the minimum number of pages in cache before the cache +** will attempt to spill dirty pages by calling xStress. +*/ +SQLITE_PRIVATE int sqlite3PcacheSetSpillsize(PCache *, int); + /* Free up as much memory as possible from the page cache */ SQLITE_PRIVATE void sqlite3PcacheShrink(PCache*); @@ -9758,11 +13512,17 @@ SQLITE_PRIVATE void sqlite3PcacheStats(int*,int*,int*,int*); SQLITE_PRIVATE void sqlite3PCacheSetDefault(void); +/* Return the header size */ +SQLITE_PRIVATE int sqlite3HeaderSizePcache(void); +SQLITE_PRIVATE int sqlite3HeaderSizePcache1(void); + +/* Number of dirty pages as a percentage of the configured cache size */ +SQLITE_PRIVATE int sqlite3PCachePercentDirty(PCache*); + #endif /* _PCACHE_H_ */ /************** End of pcache.h **********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ - /************** Include os.h in the middle of sqliteInt.h ********************/ /************** Begin file os.h **********************************************/ /* @@ -9788,83 +13548,71 @@ SQLITE_PRIVATE void sqlite3PCacheSetDefault(void); #define _SQLITE_OS_H_ /* -** Figure out if we are dealing with Unix, Windows, or some other -** operating system. After the following block of preprocess macros, -** all of SQLITE_OS_UNIX, SQLITE_OS_WIN, and SQLITE_OS_OTHER -** will defined to either 1 or 0. One of the four will be 1. The other -** three will be 0. +** Attempt to automatically detect the operating system and setup the +** necessary pre-processor macros for it. +*/ +/************** Include os_setup.h in the middle of os.h *********************/ +/************** Begin file os_setup.h ****************************************/ +/* +** 2013 November 25 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains pre-processor directives related to operating system +** detection and/or setup. +*/ +#ifndef SQLITE_OS_SETUP_H +#define SQLITE_OS_SETUP_H + +/* +** Figure out if we are dealing with Unix, Windows, or some other operating +** system. +** +** After the following block of preprocess macros, all of SQLITE_OS_UNIX, +** SQLITE_OS_WIN, and SQLITE_OS_OTHER will defined to either 1 or 0. One of +** the three will be 1. The other two will be 0. */ #if defined(SQLITE_OS_OTHER) -# if SQLITE_OS_OTHER==1 -# undef SQLITE_OS_UNIX -# define SQLITE_OS_UNIX 0 -# undef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# else -# undef SQLITE_OS_OTHER -# endif +# if SQLITE_OS_OTHER==1 +# undef SQLITE_OS_UNIX +# define SQLITE_OS_UNIX 0 +# undef SQLITE_OS_WIN +# define SQLITE_OS_WIN 0 +# else +# undef SQLITE_OS_OTHER +# endif #endif #if !defined(SQLITE_OS_UNIX) && !defined(SQLITE_OS_OTHER) -# define SQLITE_OS_OTHER 0 -# ifndef SQLITE_OS_WIN -# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__) -# define SQLITE_OS_WIN 1 -# define SQLITE_OS_UNIX 0 -# else -# define SQLITE_OS_WIN 0 -# define SQLITE_OS_UNIX 1 +# define SQLITE_OS_OTHER 0 +# ifndef SQLITE_OS_WIN +# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || \ + defined(__MINGW32__) || defined(__BORLANDC__) +# define SQLITE_OS_WIN 1 +# define SQLITE_OS_UNIX 0 +# else +# define SQLITE_OS_WIN 0 +# define SQLITE_OS_UNIX 1 +# endif +# else +# define SQLITE_OS_UNIX 0 # endif -# else -# define SQLITE_OS_UNIX 0 -# endif #else -# ifndef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# endif +# ifndef SQLITE_OS_WIN +# define SQLITE_OS_WIN 0 +# endif #endif -#if SQLITE_OS_WIN -# include -#endif +#endif /* SQLITE_OS_SETUP_H */ -/* -** Determine if we are dealing with Windows NT. -** -** We ought to be able to determine if we are compiling for win98 or winNT -** using the _WIN32_WINNT macro as follows: -** -** #if defined(_WIN32_WINNT) -** # define SQLITE_OS_WINNT 1 -** #else -** # define SQLITE_OS_WINNT 0 -** #endif -** -** However, vs2005 does not set _WIN32_WINNT by default, as it ought to, -** so the above test does not work. We'll just assume that everything is -** winNT unless the programmer explicitly says otherwise by setting -** SQLITE_OS_WINNT to 0. -*/ -#if SQLITE_OS_WIN && !defined(SQLITE_OS_WINNT) -# define SQLITE_OS_WINNT 1 -#endif - -/* -** Determine if we are dealing with WindowsCE - which has a much -** reduced API. -*/ -#if defined(_WIN32_WCE) -# define SQLITE_OS_WINCE 1 -#else -# define SQLITE_OS_WINCE 0 -#endif - -/* -** Determine if we are dealing with WinRT, which provides only a subset of -** the full Win32 API. -*/ -#if !defined(SQLITE_OS_WINRT) -# define SQLITE_OS_WINRT 0 -#endif +/************** End of os_setup.h ********************************************/ +/************** Continuing where we left off in os.h *************************/ /* If the SET_FULLSYNC macro is not defined above, then make it ** a no-op @@ -9960,7 +13708,7 @@ SQLITE_PRIVATE void sqlite3PCacheSetDefault(void); ** shared locks begins at SHARED_FIRST. ** ** The same locking strategy and -** byte ranges are used for Unix. This leaves open the possiblity of having +** byte ranges are used for Unix. This leaves open the possibility of having ** clients on win95, winNT, and unix all talking to the same shared file ** and all locking correctly. To do so would require that samba (or whatever ** tool is being used for file sharing) implements locks correctly between @@ -10000,7 +13748,7 @@ SQLITE_PRIVATE int sqlite3OsInit(void); /* ** Functions for accessing sqlite3_file methods */ -SQLITE_PRIVATE int sqlite3OsClose(sqlite3_file*); +SQLITE_PRIVATE void sqlite3OsClose(sqlite3_file*); SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset); SQLITE_PRIVATE int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset); SQLITE_PRIVATE int sqlite3OsTruncate(sqlite3_file*, i64 size); @@ -10037,6 +13785,7 @@ SQLITE_PRIVATE void sqlite3OsDlClose(sqlite3_vfs *, void *); #endif /* SQLITE_OMIT_LOAD_EXTENSION */ SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *, int, char *); SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *, int); +SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs*); SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); /* @@ -10044,7 +13793,7 @@ SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); ** sqlite3_malloc() to obtain space for the file-handle structure. */ SQLITE_PRIVATE int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*); -SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *); +SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *); #endif /* _SQLITE_OS_H_ */ @@ -10079,7 +13828,7 @@ SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *); ** Figure out what version of the code to use. The choices are ** ** SQLITE_MUTEX_OMIT No mutex logic. Not even stubs. The -** mutexes implemention cannot be overridden +** mutexes implementation cannot be overridden ** at start-time. ** ** SQLITE_MUTEX_NOOP For single-threaded applications. No @@ -10126,6 +13875,36 @@ SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *); /************** End of mutex.h ***********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/ +/* The SQLITE_EXTRA_DURABLE compile-time option used to set the default +** synchronous setting to EXTRA. It is no longer supported. +*/ +#ifdef SQLITE_EXTRA_DURABLE +# warning Use SQLITE_DEFAULT_SYNCHRONOUS=3 instead of SQLITE_EXTRA_DURABLE +# define SQLITE_DEFAULT_SYNCHRONOUS 3 +#endif + +/* +** Default synchronous levels. +** +** Note that (for historcal reasons) the PAGER_SYNCHRONOUS_* macros differ +** from the SQLITE_DEFAULT_SYNCHRONOUS value by 1. +** +** PAGER_SYNCHRONOUS DEFAULT_SYNCHRONOUS +** OFF 1 0 +** NORMAL 2 1 +** FULL 3 2 +** EXTRA 4 3 +** +** The "PRAGMA synchronous" statement also uses the zero-based numbers. +** In other words, the zero-based numbers are used for all external interfaces +** and the one-based values are used internally. +*/ +#ifndef SQLITE_DEFAULT_SYNCHRONOUS +# define SQLITE_DEFAULT_SYNCHRONOUS (PAGER_SYNCHRONOUS_FULL-1) +#endif +#ifndef SQLITE_DEFAULT_WAL_SYNCHRONOUS +# define SQLITE_DEFAULT_WAL_SYNCHRONOUS SQLITE_DEFAULT_SYNCHRONOUS +#endif /* ** Each database file to be accessed by the system is an instance @@ -10135,9 +13914,10 @@ SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *); ** databases may be attached. */ struct Db { - char *zName; /* Name of this database */ + char *zDbSName; /* Name of this database. (schema name, not filename) */ Btree *pBt; /* The B*Tree structure for this database file */ u8 safety_level; /* How aggressive at syncing data to disk */ + u8 bSyncSet; /* True if "PRAGMA synchronous=N" has been run */ Schema *pSchema; /* Pointer to database schema (possibly shared) */ }; @@ -10148,7 +13928,7 @@ struct Db { ** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing. ** In shared cache mode, a single Schema object can be shared by multiple ** Btrees that refer to the same underlying BtShared object. -** +** ** Schema objects are automatically deallocated when the last Btree that ** references them is destroyed. The TEMP Schema is manually freed by ** sqlite3_close(). @@ -10168,18 +13948,18 @@ struct Schema { Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */ u8 file_format; /* Schema format version for this file */ u8 enc; /* Text encoding used by this database */ - u16 flags; /* Flags associated with this schema */ + u16 schemaFlags; /* Flags associated with this schema */ int cache_size; /* Number of pages to use in the cache */ }; /* -** These macros can be used to test, set, or clear bits in the +** These macros can be used to test, set, or clear bits in the ** Db.pSchema->flags field. */ -#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P)) -#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0) -#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P) -#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P) +#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->schemaFlags&(P))==(P)) +#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->schemaFlags&(P))!=0) +#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags|=(P) +#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->schemaFlags&=~(P) /* ** Allowed values for the DB.pSchema->flags field. @@ -10199,7 +13979,7 @@ struct Schema { ** The number of different kinds of things that can be limited ** using the sqlite3_limit() interface. */ -#define SQLITE_N_LIMIT (SQLITE_LIMIT_TRIGGER_DEPTH+1) +#define SQLITE_N_LIMIT (SQLITE_LIMIT_WORKER_THREADS+1) /* ** Lookaside malloc is a set of fixed-size buffers that can be used @@ -10222,8 +14002,8 @@ struct Schema { ** lookaside allocations are not used to construct the schema objects. */ struct Lookaside { + u32 bDisable; /* Only operate the lookaside when zero */ u16 sz; /* Size of each buffer in bytes */ - u8 bEnabled; /* False to disable new lookaside allocations */ u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ int nOut; /* Number of buffers currently checked out */ int mxOut; /* Highwater mark for nOut */ @@ -10237,15 +14017,65 @@ struct LookasideSlot { }; /* -** A hash table for function definitions. +** A hash table for built-in function definitions. (Application-defined +** functions use a regular table table from hash.h.) ** ** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. -** Collisions are on the FuncDef.pHash chain. +** Collisions are on the FuncDef.u.pHash chain. */ +#define SQLITE_FUNC_HASH_SZ 23 struct FuncDefHash { - FuncDef *a[23]; /* Hash table for functions */ + FuncDef *a[SQLITE_FUNC_HASH_SZ]; /* Hash table for functions */ }; +#ifdef SQLITE_USER_AUTHENTICATION +/* +** Information held in the "sqlite3" database connection object and used +** to manage user authentication. +*/ +typedef struct sqlite3_userauth sqlite3_userauth; +struct sqlite3_userauth { + u8 authLevel; /* Current authentication level */ + int nAuthPW; /* Size of the zAuthPW in bytes */ + char *zAuthPW; /* Password used to authenticate */ + char *zAuthUser; /* User name used to authenticate */ +}; + +/* Allowed values for sqlite3_userauth.authLevel */ +#define UAUTH_Unknown 0 /* Authentication not yet checked */ +#define UAUTH_Fail 1 /* User authentication failed */ +#define UAUTH_User 2 /* Authenticated as a normal user */ +#define UAUTH_Admin 3 /* Authenticated as an administrator */ + +/* Functions used only by user authorization logic */ +SQLITE_PRIVATE int sqlite3UserAuthTable(const char*); +SQLITE_PRIVATE int sqlite3UserAuthCheckLogin(sqlite3*,const char*,u8*); +SQLITE_PRIVATE void sqlite3UserAuthInit(sqlite3*); +SQLITE_PRIVATE void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**); + +#endif /* SQLITE_USER_AUTHENTICATION */ + +/* +** typedef for the authorization callback function. +*/ +#ifdef SQLITE_USER_AUTHENTICATION + typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*, + const char*, const char*); +#else + typedef int (*sqlite3_xauth)(void*,int,const char*,const char*,const char*, + const char*); +#endif + +#ifndef SQLITE_OMIT_DEPRECATED +/* This is an extra SQLITE_TRACE macro that indicates "legacy" tracing +** in the style of sqlite3_trace() +*/ +#define SQLITE_TRACE_LEGACY 0x80 +#else +#define SQLITE_TRACE_LEGACY 0 +#endif /* SQLITE_OMIT_DEPRECATED */ + + /* ** Each database connection is an instance of the following structure. */ @@ -10262,42 +14092,57 @@ struct sqlite3 { unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ int errCode; /* Most recent error code (SQLITE_*) */ int errMask; /* & result codes with this before returning */ + int iSysErrno; /* Errno value from last system error */ u16 dbOptFlags; /* Flags to enable/disable optimizations */ + u8 enc; /* Text encoding */ u8 autoCommit; /* The auto-commit flag. */ u8 temp_store; /* 1: file 2: memory 0: default */ u8 mallocFailed; /* True if we have seen a malloc failure */ + u8 bBenignMalloc; /* Do not require OOMs if true */ u8 dfltLockMode; /* Default locking-mode for attached dbs */ signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */ u8 suppressErr; /* Do not issue error messages if true */ u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */ u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */ + u8 mTrace; /* zero or more SQLITE_TRACE flags */ + u8 skipBtreeMutex; /* True if no shared-cache backends */ int nextPagesize; /* Pagesize after VACUUM if >0 */ u32 magic; /* Magic number for detect library misuse */ int nChange; /* Value returned by sqlite3_changes() */ int nTotalChange; /* Value returned by sqlite3_total_changes() */ int aLimit[SQLITE_N_LIMIT]; /* Limits */ + int nMaxSorterMmap; /* Maximum size of regions mapped by sorter */ struct sqlite3InitInfo { /* Information used during initialization */ int newTnum; /* Rootpage of table being initialized */ u8 iDb; /* Which db file is being initialized */ u8 busy; /* TRUE if currently initializing */ u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */ + u8 imposterTable; /* Building an imposter table */ } init; int nVdbeActive; /* Number of VDBEs currently running */ int nVdbeRead; /* Number of active VDBEs that read or write */ int nVdbeWrite; /* Number of active VDBEs that read and write */ int nVdbeExec; /* Number of nested calls to VdbeExec() */ + int nVDestroy; /* Number of active OP_VDestroy operations */ int nExtension; /* Number of loaded extensions */ void **aExtension; /* Array of shared library handles */ - void (*xTrace)(void*,const char*); /* Trace function */ + int (*xTrace)(u32,void*,void*,void*); /* Trace function */ void *pTraceArg; /* Argument to the trace function */ void (*xProfile)(void*,const char*,u64); /* Profiling function */ void *pProfileArg; /* Argument to profile function */ - void *pCommitArg; /* Argument to xCommitCallback() */ + void *pCommitArg; /* Argument to xCommitCallback() */ int (*xCommitCallback)(void*); /* Invoked at every commit. */ - void *pRollbackArg; /* Argument to xRollbackCallback() */ + void *pRollbackArg; /* Argument to xRollbackCallback() */ void (*xRollbackCallback)(void*); /* Invoked at every commit. */ void *pUpdateArg; void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + void *pPreUpdateArg; /* First argument to xPreUpdateCallback */ + void (*xPreUpdateCallback)( /* Registered using sqlite3_preupdate_hook() */ + void*,sqlite3*,int,char const*,char const*,sqlite3_int64,sqlite3_int64 + ); + PreUpdate *pPreUpdate; /* Context for active pre-update callback */ +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ #ifndef SQLITE_OMIT_WAL int (*xWalCallback)(void *, sqlite3 *, const char *, int); void *pWalArg; @@ -10312,8 +14157,7 @@ struct sqlite3 { } u1; Lookaside lookaside; /* Lookaside malloc configuration */ #ifndef SQLITE_OMIT_AUTHORIZATION - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); - /* Access authorization function */ + sqlite3_xauth xAuth; /* Access authorization function */ void *pAuthArg; /* 1st argument to the access auth function */ #endif #ifndef SQLITE_OMIT_PROGRESS_CALLBACK @@ -10328,7 +14172,7 @@ struct sqlite3 { VTable **aVTrans; /* Virtual tables with open transactions */ VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */ #endif - FuncDefHash aFunc; /* Hash table of connection functions */ + Hash aFunc; /* Hash table of connection functions */ Hash aCollSeq; /* All collating sequences */ BusyHandler busyHandler; /* Busy callback */ Db aDbStatic[2]; /* Static space for the 2 default backends */ @@ -10339,10 +14183,9 @@ struct sqlite3 { i64 nDeferredCons; /* Net deferred constraints this transaction. */ i64 nDeferredImmCons; /* Net deferred immediate constraints */ int *pnBytesFreed; /* If not NULL, increment this in DbFree() */ - #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - /* The following variables are all protected by the STATIC_MASTER - ** mutex, not by sqlite3.mutex. They are used by code in notify.c. + /* The following variables are all protected by the STATIC_MASTER + ** mutex, not by sqlite3.mutex. They are used by code in notify.c. ** ** When X.pUnlockConnection==Y, that means that X is waiting for Y to ** unlock so that it can proceed. @@ -10357,22 +14200,31 @@ struct sqlite3 { void (*xUnlockNotify)(void **, int); /* Unlock notify callback */ sqlite3 *pNextBlocked; /* Next in list of all blocked connections */ #endif +#ifdef SQLITE_USER_AUTHENTICATION + sqlite3_userauth auth; /* User authentication information */ +#endif }; /* ** A macro to discover the encoding of a database. */ -#define ENC(db) ((db)->aDb[0].pSchema->enc) +#define SCHEMA_ENC(db) ((db)->aDb[0].pSchema->enc) +#define ENC(db) ((db)->enc) /* ** Possible values for the sqlite3.flags. +** +** Value constraints (enforced via assert()): +** SQLITE_FullFSync == PAGER_FULLFSYNC +** SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC +** SQLITE_CacheSpill == PAGER_CACHE_SPILL */ #define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */ #define SQLITE_InternChanges 0x00000002 /* Uncommitted Hash table changes */ -#define SQLITE_FullFSync 0x00000004 /* Use full fsync on the backend */ -#define SQLITE_CkptFullFSync 0x00000008 /* Use full fsync for checkpoint */ -#define SQLITE_CacheSpill 0x00000010 /* OK to spill pager cache */ -#define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */ +#define SQLITE_FullColNames 0x00000004 /* Show full column names on SELECT */ +#define SQLITE_FullFSync 0x00000008 /* Use full fsync on the backend */ +#define SQLITE_CkptFullFSync 0x00000010 /* Use full fsync for checkpoint */ +#define SQLITE_CacheSpill 0x00000020 /* OK to spill pager cache */ #define SQLITE_ShortColNames 0x00000040 /* Show short columns names */ #define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */ /* DELETE, or UPDATE and return */ @@ -10393,10 +14245,15 @@ struct sqlite3 { #define SQLITE_AutoIndex 0x00100000 /* Enable automatic indexes */ #define SQLITE_PreferBuiltin 0x00200000 /* Preference to built-in funcs */ #define SQLITE_LoadExtension 0x00400000 /* Enable load_extension */ -#define SQLITE_EnableTrigger 0x00800000 /* True to enable triggers */ -#define SQLITE_DeferFKs 0x01000000 /* Defer all FK constraints */ -#define SQLITE_QueryOnly 0x02000000 /* Disable database changes */ -#define SQLITE_VdbeEQP 0x04000000 /* Debug EXPLAIN QUERY PLAN */ +#define SQLITE_LoadExtFunc 0x00800000 /* Enable load_extension() SQL func */ +#define SQLITE_EnableTrigger 0x01000000 /* True to enable triggers */ +#define SQLITE_DeferFKs 0x02000000 /* Defer all FK constraints */ +#define SQLITE_QueryOnly 0x04000000 /* Disable database changes */ +#define SQLITE_VdbeEQP 0x08000000 /* Debug EXPLAIN QUERY PLAN */ +#define SQLITE_Vacuum 0x10000000 /* Currently in a VACUUM */ +#define SQLITE_CellSizeCk 0x20000000 /* Check btree cell sizes on load */ +#define SQLITE_Fts3Tokenizer 0x40000000 /* Enable fts3_tokenizer(2) */ +#define SQLITE_NoCkptOnClose 0x80000000 /* No checkpoint on close()/DETACH */ /* @@ -10415,27 +14272,21 @@ struct sqlite3 { #define SQLITE_SubqCoroutine 0x0100 /* Evaluate subqueries as coroutines */ #define SQLITE_Transitive 0x0200 /* Transitive constraints */ #define SQLITE_OmitNoopJoin 0x0400 /* Omit unused tables in joins */ -#define SQLITE_Stat3 0x0800 /* Use the SQLITE_STAT3 table */ -#define SQLITE_AdjustOutEst 0x1000 /* Adjust output estimates using WHERE */ +#define SQLITE_Stat34 0x0800 /* Use STAT3 or STAT4 data */ +#define SQLITE_CursorHints 0x2000 /* Add OP_CursorHint opcodes */ #define SQLITE_AllOpts 0xffff /* All optimizations */ /* ** Macros for testing whether or not optimizations are enabled or disabled. */ -#ifndef SQLITE_OMIT_BUILTIN_TEST #define OptimizationDisabled(db, mask) (((db)->dbOptFlags&(mask))!=0) #define OptimizationEnabled(db, mask) (((db)->dbOptFlags&(mask))==0) -#else -#define OptimizationDisabled(db, mask) 0 -#define OptimizationEnabled(db, mask) 1 -#endif /* ** Return true if it OK to factor constant expressions into the initialization ** code. The argument is a Parse object for the code generator. */ -#define ConstFactorOk(P) \ - ((P)->cookieGoto>0 && OptimizationEnabled((P)->db,SQLITE_FactorOutConst)) +#define ConstFactorOk(P) ((P)->okConstFactor) /* ** Possible values for the sqlite.magic field. @@ -10451,28 +14302,33 @@ struct sqlite3 { /* ** Each SQL function is defined by an instance of the following -** structure. A pointer to this structure is stored in the sqlite.aFunc -** hash table. When multiple functions have the same name, the hash table -** points to a linked list of these structures. +** structure. For global built-in functions (ex: substr(), max(), count()) +** a pointer to this structure is held in the sqlite3BuiltinFunctions object. +** For per-connection application-defined functions, a pointer to this +** structure is held in the db->aHash hash table. +** +** The u.pHash field is used by the global built-ins. The u.pDestructor +** field is used by per-connection app-def functions. */ struct FuncDef { - i16 nArg; /* Number of arguments. -1 means unlimited */ + i8 nArg; /* Number of arguments. -1 means unlimited */ u16 funcFlags; /* Some combination of SQLITE_FUNC_* */ void *pUserData; /* User data parameter */ FuncDef *pNext; /* Next function with same name */ - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */ - void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */ - void (*xFinalize)(sqlite3_context*); /* Aggregate finalizer */ - char *zName; /* SQL name of the function. */ - FuncDef *pHash; /* Next with a different name but the same hash */ - FuncDestructor *pDestructor; /* Reference counted destructor function */ + void (*xSFunc)(sqlite3_context*,int,sqlite3_value**); /* func or agg-step */ + void (*xFinalize)(sqlite3_context*); /* Agg finalizer */ + const char *zName; /* SQL name of the function. */ + union { + FuncDef *pHash; /* Next with a different name but the same hash */ + FuncDestructor *pDestructor; /* Reference counted destructor function */ + } u; }; /* ** This structure encapsulates a user-function destructor callback (as ** configured using create_function_v2()) and a reference counter. When ** create_function_v2() is called to create a function with a destructor, -** a single object of this type is allocated. FuncDestructor.nRef is set to +** a single object of this type is allocated. FuncDestructor.nRef is set to ** the number of FuncDef objects created (either 1 or 3, depending on whether ** or not the specified encoding is SQLITE_ANY). The FuncDef.pDestructor ** member of each of the new FuncDef objects is set to point to the allocated @@ -10490,35 +14346,53 @@ struct FuncDestructor { /* ** Possible values for FuncDef.flags. Note that the _LENGTH and _TYPEOF -** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. There +** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. And +** SQLITE_FUNC_CONSTANT must be the same as SQLITE_DETERMINISTIC. There ** are assert() statements in the code to verify this. +** +** Value constraints (enforced via assert()): +** SQLITE_FUNC_MINMAX == NC_MinMaxAgg == SF_MinMaxAgg +** SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG +** SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG +** SQLITE_FUNC_CONSTANT == SQLITE_DETERMINISTIC from the API +** SQLITE_FUNC_ENCMASK depends on SQLITE_UTF* macros in the API */ -#define SQLITE_FUNC_ENCMASK 0x003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ -#define SQLITE_FUNC_LIKE 0x004 /* Candidate for the LIKE optimization */ -#define SQLITE_FUNC_CASE 0x008 /* Case-sensitive LIKE-type function */ -#define SQLITE_FUNC_EPHEM 0x010 /* Ephemeral. Delete with VDBE */ -#define SQLITE_FUNC_NEEDCOLL 0x020 /* sqlite3GetFuncCollSeq() might be called */ -#define SQLITE_FUNC_LENGTH 0x040 /* Built-in length() function */ -#define SQLITE_FUNC_TYPEOF 0x080 /* Built-in typeof() function */ -#define SQLITE_FUNC_COUNT 0x100 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x200 /* Built-in coalesce() or ifnull() */ -#define SQLITE_FUNC_UNLIKELY 0x400 /* Built-in unlikely() function */ -#define SQLITE_FUNC_CONSTANT 0x800 /* Constant inputs give a constant output */ +#define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ +#define SQLITE_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ +#define SQLITE_FUNC_CASE 0x0008 /* Case-sensitive LIKE-type function */ +#define SQLITE_FUNC_EPHEM 0x0010 /* Ephemeral. Delete with VDBE */ +#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/ +#define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */ +#define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */ +#define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */ +#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */ +#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */ +#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */ +#define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ +#define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a + ** single query - might change over time */ +#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */ /* ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are ** used to create the initializers for the FuncDef structures. ** ** FUNCTION(zName, nArg, iArg, bNC, xFunc) -** Used to create a scalar function definition of a function zName +** Used to create a scalar function definition of a function zName ** implemented by C function xFunc that accepts nArg arguments. The ** value passed as iArg is cast to a (void*) and made available -** as the user-data (sqlite3_user_data()) for the function. If +** as the user-data (sqlite3_user_data()) for the function. If ** argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set. ** ** VFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag. ** +** DFUNCTION(zName, nArg, iArg, bNC, xFunc) +** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and +** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions +** and functions like sqlite_version() that can change, but not during +** a single query. +** ** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) ** Used to create an aggregate function definition implemented by ** the C functions xStep and xFinal. The first four parameters @@ -10526,8 +14400,8 @@ struct FuncDestructor { ** FUNCTION(). ** ** LIKEFUNC(zName, nArg, pArg, flags) -** Used to create a scalar function definition of a function zName -** that accepts nArg arguments and is implemented by a call to C +** Used to create a scalar function definition of a function zName +** that accepts nArg arguments and is implemented by a call to C ** function likeFunc. Argument pArg is cast to a (void *) and made ** available as the function user-data (sqlite3_user_data()). The ** FuncDef.flags variable is set to the value passed as the flags @@ -10535,22 +14409,28 @@ struct FuncDestructor { */ #define FUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } #define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } +#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \ + {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } #define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, #zName, {0} } #define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ - pArg, 0, xFunc, 0, 0, #zName, 0, 0} + {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + pArg, 0, xFunc, 0, #zName, } #define LIKEFUNC(zName, nArg, arg, flags) \ {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \ - (void *)arg, 0, likeFunc, 0, 0, #zName, 0, 0} + (void *)arg, 0, likeFunc, 0, #zName, {0} } #define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \ {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \ - SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0} + SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {0}} +#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \ + {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \ + SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,#zName, {0}} /* ** All current savepoints are stored in a linked list starting at @@ -10584,6 +14464,7 @@ struct Module { const char *zName; /* Name passed to create_module() */ void *pAux; /* pAux passed to create_module() */ void (*xDestroy)(void *); /* Module destructor function */ + Table *pEpoTab; /* Eponymous table for this module */ }; /* @@ -10591,14 +14472,12 @@ struct Module { ** of this structure. */ struct Column { - char *zName; /* Name of this column */ + char *zName; /* Name of this column, \000, then the type */ Expr *pDflt; /* Default value of this column */ - char *zDflt; /* Original text of the default value */ - char *zType; /* Data type for this column */ char *zColl; /* Collating sequence. If NULL, use the default */ u8 notNull; /* An OE_ code for handling a NOT NULL constraint */ char affinity; /* One of the SQLITE_AFF_... values */ - u8 szEst; /* Estimated size of this column. INT==1 */ + u8 szEst; /* Estimated size of value in this column. sizeof(INT)==1 */ u8 colFlags; /* Boolean properties. See COLFLAG_ defines below */ }; @@ -10606,6 +14485,7 @@ struct Column { */ #define COLFLAG_PRIMKEY 0x0001 /* Column is part of the primary key */ #define COLFLAG_HIDDEN 0x0002 /* A hidden column in a virtual table */ +#define COLFLAG_HASTYPE 0x0004 /* Type name follows column name */ /* ** A "Collating Sequence" is defined by an instance of the following @@ -10629,59 +14509,67 @@ struct CollSeq { */ #define SQLITE_SO_ASC 0 /* Sort in ascending order */ #define SQLITE_SO_DESC 1 /* Sort in ascending order */ +#define SQLITE_SO_UNDEFINED -1 /* No sort order specified */ /* ** Column affinity types. ** ** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and ** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve -** the speed a little by numbering the values consecutively. +** the speed a little by numbering the values consecutively. ** -** But rather than start with 0 or 1, we begin with 'a'. That way, +** But rather than start with 0 or 1, we begin with 'A'. That way, ** when multiple affinity types are concatenated into a string and ** used as the P4 operand, they will be more readable. ** ** Note also that the numeric types are grouped together so that testing -** for a numeric type is a single comparison. +** for a numeric type is a single comparison. And the BLOB type is first. */ -#define SQLITE_AFF_TEXT 'a' -#define SQLITE_AFF_NONE 'b' -#define SQLITE_AFF_NUMERIC 'c' -#define SQLITE_AFF_INTEGER 'd' -#define SQLITE_AFF_REAL 'e' +#define SQLITE_AFF_BLOB 'A' +#define SQLITE_AFF_TEXT 'B' +#define SQLITE_AFF_NUMERIC 'C' +#define SQLITE_AFF_INTEGER 'D' +#define SQLITE_AFF_REAL 'E' #define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC) /* ** The SQLITE_AFF_MASK values masks off the significant bits of an -** affinity value. +** affinity value. */ -#define SQLITE_AFF_MASK 0x67 +#define SQLITE_AFF_MASK 0x47 /* ** Additional bit values that can be ORed with an affinity without ** changing the affinity. +** +** The SQLITE_NOTNULL flag is a combination of NULLEQ and JUMPIFNULL. +** It causes an assert() to fire if either operand to a comparison +** operator is NULL. It is added to certain comparison operators to +** prove that the operands are always NOT NULL. */ -#define SQLITE_JUMPIFNULL 0x08 /* jumps if either operand is NULL */ -#define SQLITE_STOREP2 0x10 /* Store result in reg[P2] rather than jump */ +#define SQLITE_KEEPNULL 0x08 /* Used by vector == or <> */ +#define SQLITE_JUMPIFNULL 0x10 /* jumps if either operand is NULL */ +#define SQLITE_STOREP2 0x20 /* Store result in reg[P2] rather than jump */ #define SQLITE_NULLEQ 0x80 /* NULL=NULL */ +#define SQLITE_NOTNULL 0x90 /* Assert that operands are never NULL */ /* ** An object of this type is created for each virtual table present in -** the database schema. +** the database schema. ** ** If the database schema is shared, then there is one instance of this ** structure for each database connection (sqlite3*) that uses the shared ** schema. This is because each database connection requires its own unique -** instance of the sqlite3_vtab* handle used to access the virtual table -** implementation. sqlite3_vtab* handles can not be shared between -** database connections, even when the rest of the in-memory database +** instance of the sqlite3_vtab* handle used to access the virtual table +** implementation. sqlite3_vtab* handles can not be shared between +** database connections, even when the rest of the in-memory database ** schema is shared, as the implementation often stores the database ** connection handle passed to it via the xConnect() or xCreate() method ** during initialization internally. This database connection handle may -** then be used by the virtual table implementation to access real tables -** within the database. So that they appear as part of the callers -** transaction, these accesses need to be made via the same database +** then be used by the virtual table implementation to access real tables +** within the database. So that they appear as part of the callers +** transaction, these accesses need to be made via the same database ** connection as that used to execute SQL operations on the virtual table. ** ** All VTable objects that correspond to a single table in a shared @@ -10693,19 +14581,19 @@ struct CollSeq { ** sqlite3_vtab* handle in the compiled query. ** ** When an in-memory Table object is deleted (for example when the -** schema is being reloaded for some reason), the VTable objects are not -** deleted and the sqlite3_vtab* handles are not xDisconnect()ed +** schema is being reloaded for some reason), the VTable objects are not +** deleted and the sqlite3_vtab* handles are not xDisconnect()ed ** immediately. Instead, they are moved from the Table.pVTable list to ** another linked list headed by the sqlite3.pDisconnect member of the -** corresponding sqlite3 structure. They are then deleted/xDisconnected +** corresponding sqlite3 structure. They are then deleted/xDisconnected ** next time a statement is prepared using said sqlite3*. This is done ** to avoid deadlock issues involving multiple sqlite3.mutex mutexes. ** Refer to comments above function sqlite3VtabUnlockList() for an ** explanation as to why it is safe to add an entry to an sqlite3.pDisconnect ** list without holding the corresponding sqlite3.mutex mutex. ** -** The memory for objects of this type is always allocated by -** sqlite3DbMalloc(), using the connection handle stored in VTable.db as +** The memory for objects of this type is always allocated by +** sqlite3DbMalloc(), using the connection handle stored in VTable.db as ** the first argument. */ struct VTable { @@ -10719,34 +14607,8 @@ struct VTable { }; /* -** Each SQL table is represented in memory by an instance of the -** following structure. -** -** Table.zName is the name of the table. The case of the original -** CREATE TABLE statement is stored, but case is not significant for -** comparisons. -** -** Table.nCol is the number of columns in this table. Table.aCol is a -** pointer to an array of Column structures, one for each column. -** -** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of -** the column that is that key. Otherwise Table.iPKey is negative. Note -** that the datatype of the PRIMARY KEY must be INTEGER for this field to -** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of -** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid -** is generated for each row of the table. TF_HasPrimaryKey is set if -** the table has any PRIMARY KEY, INTEGER or otherwise. -** -** Table.tnum is the page number for the root BTree page of the table in the -** database file. If Table.iDb is the index of the database table backend -** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that -** holds temporary tables and indices. If TF_Ephemeral is set -** then the table is stored in a file that is automatically deleted -** when the VDBE cursor to the table is closed. In this case Table.tnum -** refers VDBE cursor number that holds the table open, not to the root -** page number. Transient tables are used to hold the results of a -** sub-query that appears instead of a real table name in the FROM clause -** of a SELECT statement. +** The schema for each SQL table and view is represented in memory +** by an instance of the following structure. */ struct Table { char *zName; /* Name of the table or view */ @@ -10755,15 +14617,17 @@ struct Table { Select *pSelect; /* NULL for tables. Points to definition if a view. */ FKey *pFKey; /* Linked list of all foreign keys in this table */ char *zColAff; /* String defining the affinity of each column */ -#ifndef SQLITE_OMIT_CHECK ExprList *pCheck; /* All CHECK constraints */ -#endif - tRowcnt nRowEst; /* Estimated rows in table - from sqlite_stat1 table */ - int tnum; /* Root BTree node for this table (see note above) */ - i16 iPKey; /* If not negative, use aCol[iPKey] as the primary key */ + /* ... also used as column name list in a VIEW */ + int tnum; /* Root BTree page for this table */ + u32 nTabRef; /* Number of pointers to this Table */ + i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */ i16 nCol; /* Number of columns in this table */ - u16 nRef; /* Number of pointers to this Table */ + LogEst nRowLogEst; /* Estimated rows in table - from sqlite_stat1 table */ LogEst szTabRow; /* Estimated size of each table row in bytes */ +#ifdef SQLITE_ENABLE_COSTMULT + LogEst costMult; /* Cost multiplier for using this table */ +#endif u8 tabFlags; /* Mask of TF_* values */ u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ #ifndef SQLITE_OMIT_ALTERTABLE @@ -10771,7 +14635,7 @@ struct Table { #endif #ifndef SQLITE_OMIT_VIRTUALTABLE int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* Text of all module args. [0] is module name */ + char **azModuleArg; /* 0: module 1: schema 2: vtab name 3...: args */ VTable *pVTable; /* List of VTable objects. */ #endif Trigger *pTrigger; /* List of triggers stored in pSchema */ @@ -10781,13 +14645,21 @@ struct Table { /* ** Allowed values for Table.tabFlags. +** +** TF_OOOHidden applies to tables or view that have hidden columns that are +** followed by non-hidden columns. Example: "CREATE VIRTUAL TABLE x USING +** vtab1(a HIDDEN, b);". Since "b" is a non-hidden column but "a" is hidden, +** the TF_OOOHidden attribute would apply in this case. Such tables require +** special handling during INSERT processing. */ #define TF_Readonly 0x01 /* Read-only system table */ #define TF_Ephemeral 0x02 /* An ephemeral table */ #define TF_HasPrimaryKey 0x04 /* Table has a primary key */ #define TF_Autoincrement 0x08 /* Integer primary key is autoincrement */ #define TF_Virtual 0x10 /* Is a virtual table */ -#define TF_WithoutRowid 0x20 /* No rowid used. PRIMARY KEY is the key */ +#define TF_WithoutRowid 0x20 /* No rowid. PRIMARY KEY is the key */ +#define TF_NoVisibleRowid 0x40 /* No user-visible "rowid" column */ +#define TF_OOOHidden 0x80 /* Out-of-Order hidden columns */ /* @@ -10797,14 +14669,31 @@ struct Table { */ #ifndef SQLITE_OMIT_VIRTUALTABLE # define IsVirtual(X) (((X)->tabFlags & TF_Virtual)!=0) -# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) #else # define IsVirtual(X) 0 -# define IsHiddenColumn(X) 0 #endif +/* +** Macros to determine if a column is hidden. IsOrdinaryHiddenColumn() +** only works for non-virtual tables (ordinary tables and views) and is +** always false unless SQLITE_ENABLE_HIDDEN_COLUMNS is defined. The +** IsHiddenColumn() macro is general purpose. +*/ +#if defined(SQLITE_ENABLE_HIDDEN_COLUMNS) +# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) +# define IsOrdinaryHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) +#elif !defined(SQLITE_OMIT_VIRTUALTABLE) +# define IsHiddenColumn(X) (((X)->colFlags & COLFLAG_HIDDEN)!=0) +# define IsOrdinaryHiddenColumn(X) 0 +#else +# define IsHiddenColumn(X) 0 +# define IsOrdinaryHiddenColumn(X) 0 +#endif + + /* Does the table have a rowid */ #define HasRowid(X) (((X)->tabFlags & TF_WithoutRowid)==0) +#define VisibleRowid(X) (((X)->tabFlags & TF_NoVisibleRowid)==0) /* ** Each foreign key constraint is an instance of the following structure. @@ -10872,7 +14761,7 @@ struct FKey { ** key is set to NULL. CASCADE means that a DELETE or UPDATE of the ** referenced table row is propagated into the row that holds the ** foreign key. -** +** ** The following symbolic values are used to record which type ** of action to take. */ @@ -10893,7 +14782,7 @@ struct FKey { /* ** An instance of the following structure is passed as the first -** argument to sqlite3VdbeKeyCompare and is used to control the +** argument to sqlite3VdbeKeyCompare and is used to control the ** comparison of the two index keys. ** ** Note that aSortOrder[] and aColl[] have nField+1 slots. There @@ -10911,9 +14800,8 @@ struct KeyInfo { }; /* -** An instance of the following structure holds information about a -** single index record that has already been parsed out into individual -** values. +** This object holds a record which has been parsed out into individual +** fields, for the purposes of doing a comparison. ** ** A record is an object that contains one or more fields of data. ** Records are used to store the content of a table row and to store @@ -10921,21 +14809,42 @@ struct KeyInfo { ** the OP_MakeRecord opcode of the VDBE and is disassembled by the ** OP_Column opcode. ** -** This structure holds a record that has already been disassembled -** into its constituent fields. +** An instance of this object serves as a "key" for doing a search on +** an index b+tree. The goal of the search is to find the entry that +** is closed to the key described by this object. This object might hold +** just a prefix of the key. The number of fields is given by +** pKeyInfo->nField. +** +** The r1 and r2 fields are the values to return if this key is less than +** or greater than a key in the btree, respectively. These are normally +** -1 and +1 respectively, but might be inverted to +1 and -1 if the b-tree +** is in DESC order. +** +** The key comparison functions actually return default_rc when they find +** an equals comparison. default_rc can be -1, 0, or +1. If there are +** multiple entries in the b-tree with the same key (when only looking +** at the first pKeyInfo->nFields,) then default_rc can be set to -1 to +** cause the search to find the last match, or +1 to cause the search to +** find the first match. +** +** The key comparison functions will set eqSeen to true if they ever +** get and equal results when comparing this structure to a b-tree record. +** When default_rc!=0, the search might end up on the record immediately +** before the first match or immediately after the last match. The +** eqSeen field will indicate whether or not an exact match exists in the +** b-tree. */ struct UnpackedRecord { KeyInfo *pKeyInfo; /* Collation and sort-order information */ - u16 nField; /* Number of entries in apMem[] */ - u8 flags; /* Boolean settings. UNPACKED_... below */ Mem *aMem; /* Values */ + u16 nField; /* Number of entries in apMem[] */ + i8 default_rc; /* Comparison result if keys are equal */ + u8 errCode; /* Error detected by xRecordCompare (CORRUPT or NOMEM) */ + i8 r1; /* Value to return if (lhs > rhs) */ + i8 r2; /* Value to return if (rhs < lhs) */ + u8 eqSeen; /* True if an equality comparison has been seen */ }; -/* -** Allowed values of UnpackedRecord.flags -*/ -#define UNPACKED_INCRKEY 0x01 /* Make this key an epsilon larger */ -#define UNPACKED_PREFIX_MATCH 0x02 /* A prefix match is considered OK */ /* ** Each SQL index is represented in memory by an @@ -10951,7 +14860,7 @@ struct UnpackedRecord { ** In the Table structure describing Ex1, nCol==3 because there are ** three columns in the table. In the Index structure describing ** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed. -** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the +** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the ** first column to be indexed (c3) has an index of 2 in Ex1.aCol[]. ** The second column to be indexed (c1) has an index of 0 in ** Ex1.aCol[], hence Ex2.aiColumn[1]==0. @@ -10959,42 +14868,72 @@ struct UnpackedRecord { ** The Index.onError field determines whether or not the indexed columns ** must be unique and what to do if they are not. When Index.onError=OE_None, ** it means this is not a unique index. Otherwise it is a unique index -** and the value of Index.onError indicate the which conflict resolution +** and the value of Index.onError indicate the which conflict resolution ** algorithm to employ whenever an attempt is made to insert a non-unique ** element. +** +** While parsing a CREATE TABLE or CREATE INDEX statement in order to +** generate VDBE code (as opposed to parsing one read from an sqlite_master +** table as part of parsing an existing database schema), transient instances +** of this structure may be created. In this case the Index.tnum variable is +** used to store the address of a VDBE instruction, not a database page +** number (it cannot - the database page is not allocated until the VDBE +** program is executed). See convertToWithoutRowidTable() for details. */ struct Index { char *zName; /* Name of this index */ i16 *aiColumn; /* Which columns are used by this index. 1st is 0 */ - tRowcnt *aiRowEst; /* From ANALYZE: Est. rows selected by each column */ + LogEst *aiRowLogEst; /* From ANALYZE: Est. rows selected by each column */ Table *pTable; /* The SQL table being indexed */ char *zColAff; /* String defining the affinity of each column */ Index *pNext; /* The next index associated with the same table */ Schema *pSchema; /* Schema containing this index */ u8 *aSortOrder; /* for each column: True==DESC, False==ASC */ - char **azColl; /* Array of collation sequence names for index */ + const char **azColl; /* Array of collation sequence names for index */ Expr *pPartIdxWhere; /* WHERE clause for partial indices */ - KeyInfo *pKeyInfo; /* A KeyInfo object suitable for this index */ + ExprList *aColExpr; /* Column expressions */ int tnum; /* DB Page containing root of this index */ LogEst szIdxRow; /* Estimated average row size in bytes */ u16 nKeyCol; /* Number of columns forming the key */ u16 nColumn; /* Number of columns stored in the index */ u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - unsigned autoIndex:2; /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */ + unsigned idxType:2; /* 1==UNIQUE, 2==PRIMARY KEY, 0==CREATE INDEX */ unsigned bUnordered:1; /* Use this index for == or IN queries only */ unsigned uniqNotNull:1; /* True if UNIQUE and NOT NULL for all columns */ unsigned isResized:1; /* True if resizeIndexObject() has been called */ unsigned isCovering:1; /* True if this is a covering index */ + unsigned noSkipScan:1; /* Do not try to use skip-scan if true */ #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 int nSample; /* Number of elements in aSample[] */ int nSampleCol; /* Size of IndexSample.anEq[] and so on */ tRowcnt *aAvgEq; /* Average nEq values for keys not in aSample */ IndexSample *aSample; /* Samples of the left-most key */ + tRowcnt *aiRowEst; /* Non-logarithmic stat1 data for this index */ + tRowcnt nRowEst0; /* Non-logarithmic number of rows in the index */ #endif }; /* -** Each sample stored in the sqlite_stat3 table is represented in memory +** Allowed values for Index.idxType +*/ +#define SQLITE_IDXTYPE_APPDEF 0 /* Created using CREATE INDEX */ +#define SQLITE_IDXTYPE_UNIQUE 1 /* Implements a UNIQUE constraint */ +#define SQLITE_IDXTYPE_PRIMARYKEY 2 /* Is the PRIMARY KEY for the table */ + +/* Return true if index X is a PRIMARY KEY index */ +#define IsPrimaryKeyIndex(X) ((X)->idxType==SQLITE_IDXTYPE_PRIMARYKEY) + +/* Return true if index X is a UNIQUE index */ +#define IsUniqueIndex(X) ((X)->onError!=OE_None) + +/* The Index.aiColumn[] values are normally positive integer. But +** there are some negative values that have special meaning: +*/ +#define XN_ROWID (-1) /* Indexed column is the rowid */ +#define XN_EXPR (-2) /* Indexed column is an expression */ + +/* +** Each sample stored in the sqlite_stat3 table is represented in memory ** using a structure of this type. See documentation at the top of the ** analyze.c source file for additional information. */ @@ -11089,9 +15028,9 @@ typedef int ynVar; ** to represent the greater-than-or-equal-to operator in the expression ** tree. ** -** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, +** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, ** or TK_STRING), then Expr.token contains the text of the SQL literal. If -** the expression is a variable (TK_VARIABLE), then Expr.token contains the +** the expression is a variable (TK_VARIABLE), then Expr.token contains the ** variable name. Finally, if the expression is an SQL function (TK_FUNCTION), ** then Expr.token contains the name of the function. ** @@ -11102,7 +15041,7 @@ typedef int ynVar; ** a CASE expression or an IN expression of the form " IN (, ...)". ** Expr.x.pSelect is used if the expression is a sub-select or an expression of ** the form " IN (SELECT ...)". If the EP_xIsSelect bit is set in the -** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is +** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is ** valid. ** ** An expression of the form ID or ID.ID refers to a column in a table. @@ -11113,8 +15052,8 @@ typedef int ynVar; ** value is also stored in the Expr.iAgg column in the aggregate so that ** it can be accessed after all aggregates are computed. ** -** If the expression is an unbound variable marker (a question mark -** character '?' in the original SQL) then the Expr.iTable holds the index +** If the expression is an unbound variable marker (a question mark +** character '?' in the original SQL) then the Expr.iTable holds the index ** number for that variable. ** ** If the expression is a subquery then Expr.iColumn holds an integer @@ -11153,7 +15092,7 @@ struct Expr { /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no ** space is allocated for the fields below this point. An attempt to - ** access them will result in a segfault or malfunction. + ** access them will result in a segfault or malfunction. *********************************************************************/ Expr *pLeft; /* Left subnode */ @@ -11174,9 +15113,11 @@ struct Expr { int iTable; /* TK_COLUMN: cursor number of table holding column ** TK_REGISTER: register number ** TK_TRIGGER: 1 -> new, 0 -> old - ** EP_Unlikely: 1000 times likelihood */ + ** EP_Unlikely: 134217728 times likelihood + ** TK_SELECT: 1st register of result vector */ ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. - ** TK_VARIABLE: variable number (always >= 1). */ + ** TK_VARIABLE: variable number (always >= 1). + ** TK_SELECT_COLUMN: column of the result vector */ i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */ u8 op2; /* TK_REGISTER: original value of Expr.op @@ -11189,7 +15130,7 @@ struct Expr { /* ** The following are the meanings of bits in the Expr.flags field. */ -#define EP_FromJoin 0x000001 /* Originated in ON or USING clause of a join */ +#define EP_FromJoin 0x000001 /* Originates in ON/USING clause of outer join */ #define EP_Agg 0x000002 /* Contains one or more aggregate functions */ #define EP_Resolved 0x000004 /* IDs have been resolved to COLUMNs */ #define EP_Error 0x000008 /* Expression contains one or more errors */ @@ -11197,8 +15138,8 @@ struct Expr { #define EP_VarSelect 0x000020 /* pSelect is correlated, not constant */ #define EP_DblQuoted 0x000040 /* token.z was originally in "..." */ #define EP_InfixFunc 0x000080 /* True for an infix function: LIKE, GLOB, etc */ -#define EP_Collate 0x000100 /* Tree contains a TK_COLLATE opeartor */ - /* unused 0x000200 */ +#define EP_Collate 0x000100 /* Tree contains a TK_COLLATE operator */ +#define EP_Generic 0x000200 /* Ignore COLLATE or affinity on this tree */ #define EP_IntValue 0x000400 /* Integer value contained in u.iValue */ #define EP_xIsSelect 0x000800 /* x.pSelect is valid (otherwise x.pList is) */ #define EP_Skip 0x001000 /* COLLATE, AS, or UNLIKELY */ @@ -11208,10 +15149,19 @@ struct Expr { #define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */ #define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */ #define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */ -#define EP_Constant 0x080000 /* Node is a constant */ +#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ +#define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */ +#define EP_Subquery 0x200000 /* Tree contains a TK_SELECT operator */ +#define EP_Alias 0x400000 /* Is an alias for a result set column */ +#define EP_Leaf 0x800000 /* Expr.pLeft, .pRight, .u.pSelect all NULL */ /* -** These macros can be used to test, set, or clear bits in the +** Combinations of two or more EP_* flags +*/ +#define EP_Propagate (EP_Collate|EP_Subquery) /* Propagate these bits up tree */ + +/* +** These macros can be used to test, set, or clear bits in the ** Expr.flags field. */ #define ExprHasProperty(E,P) (((E)->flags&(P))!=0) @@ -11230,8 +15180,8 @@ struct Expr { #endif /* -** Macros to determine the number of bytes required by a normal Expr -** struct, an Expr struct with the EP_Reduced flag set in Expr.flags +** Macros to determine the number of bytes required by a normal Expr +** struct, an Expr struct with the EP_Reduced flag set in Expr.flags ** and an Expr struct with the EP_TokenOnly flag set. */ #define EXPR_FULLSIZE sizeof(Expr) /* Full size */ @@ -11239,7 +15189,7 @@ struct Expr { #define EXPR_TOKENONLYSIZE offsetof(Expr,pLeft) /* Fewer features */ /* -** Flags passed to the sqlite3ExprDup() function. See the header comment +** Flags passed to the sqlite3ExprDup() function. See the header comment ** above sqlite3ExprDup() for details. */ #define EXPRDUP_REDUCE 0x0001 /* Used reduced-size Expr nodes */ @@ -11262,7 +15212,6 @@ struct Expr { */ struct ExprList { int nExpr; /* Number of expressions on the list */ - int iECursor; /* VDBE Cursor associated with this ExprList */ struct ExprList_item { /* For each expression in the list */ Expr *pExpr; /* The list of expressions */ char *zName; /* Token associated with this expression */ @@ -11322,7 +15271,11 @@ struct IdList { ** tables in a join to 32 instead of 64. But it also reduces the size ** of the library by 738 bytes on ix86. */ -typedef u64 Bitmask; +#ifdef SQLITE_BITMASK_TYPE + typedef SQLITE_BITMASK_TYPE Bitmask; +#else + typedef u64 Bitmask; +#endif /* ** The number of bits in a Bitmask. "BMS" means "BitMask Size". @@ -11334,6 +15287,7 @@ typedef u64 Bitmask; */ #define MASKBIT(n) (((Bitmask)1)<<(n)) #define MASKBIT32(n) (((unsigned int)1)<<(n)) +#define ALLBITS ((Bitmask)-1) /* ** The following structure describes the FROM clause of a SELECT statement. @@ -11355,8 +15309,8 @@ typedef u64 Bitmask; ** contains more than 63 columns and the 64-th or later column is used. */ struct SrcList { - u8 nSrc; /* Number of tables or subqueries in the FROM clause */ - u8 nAlloc; /* Number of entries allocated in a[] below */ + int nSrc; /* Number of tables or subqueries in the FROM clause */ + u32 nAlloc; /* Number of entries allocated in a[] below */ struct SrcList_item { Schema *pSchema; /* Schema to which this item is fixed */ char *zDatabase; /* Name of database holding this table */ @@ -11366,11 +15320,16 @@ struct SrcList { Select *pSelect; /* A SELECT statement used in place of a table name */ int addrFillSub; /* Address of subroutine to manifest a subquery */ int regReturn; /* Register holding return address of addrFillSub */ - u8 jointype; /* Type of join between this able and the previous */ - unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ - unsigned isCorrelated :1; /* True if sub-query is correlated */ - unsigned viaCoroutine :1; /* Implemented as a co-routine */ - unsigned isRecursive :1; /* True for recursive reference in WITH */ + int regResult; /* Registers holding results of a co-routine */ + struct { + u8 jointype; /* Type of join between this table and the previous */ + unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ + unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ + unsigned isTabFunc :1; /* True if table-valued-function syntax */ + unsigned isCorrelated :1; /* True if sub-query is correlated */ + unsigned viaCoroutine :1; /* Implemented as a co-routine */ + unsigned isRecursive :1; /* True for recursive reference in WITH */ + } fg; #ifndef SQLITE_OMIT_EXPLAIN u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */ #endif @@ -11378,8 +15337,11 @@ struct SrcList { Expr *pOn; /* The ON clause of a join */ IdList *pUsing; /* The USING clause of a join */ Bitmask colUsed; /* Bit N (1<" clause */ - Index *pIndex; /* Index structure corresponding to zIndex, if any */ + union { + char *zIndexedBy; /* Identifier from "INDEXED BY " clause */ + ExprList *pFuncArg; /* Arguments to table-valued-function */ + } u1; + Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ } a[1]; /* One entry for each identifier on the list */ }; @@ -11398,19 +15360,28 @@ struct SrcList { /* ** Flags appropriate for the wctrlFlags parameter of sqlite3WhereBegin() ** and the WhereInfo.wctrlFlags member. +** +** Value constraints (enforced via assert()): +** WHERE_USE_LIMIT == SF_FixedLimit */ #define WHERE_ORDERBY_NORMAL 0x0000 /* No-op */ #define WHERE_ORDERBY_MIN 0x0001 /* ORDER BY processing for min() func */ #define WHERE_ORDERBY_MAX 0x0002 /* ORDER BY processing for max() func */ #define WHERE_ONEPASS_DESIRED 0x0004 /* Want to do one-pass UPDATE/DELETE */ -#define WHERE_DUPLICATES_OK 0x0008 /* Ok to return a row more than once */ -#define WHERE_OMIT_OPEN_CLOSE 0x0010 /* Table cursors are already open */ -#define WHERE_FORCE_TABLE 0x0020 /* Do not use an index-only search */ -#define WHERE_ONETABLE_ONLY 0x0040 /* Only code the 1st table in pTabList */ -#define WHERE_AND_ONLY 0x0080 /* Don't use indices for OR terms */ -#define WHERE_GROUPBY 0x0100 /* pOrderBy is really a GROUP BY */ -#define WHERE_DISTINCTBY 0x0200 /* pOrderby is really a DISTINCT clause */ -#define WHERE_WANT_DISTINCT 0x0400 /* All output needs to be distinct */ +#define WHERE_ONEPASS_MULTIROW 0x0008 /* ONEPASS is ok with multiple rows */ +#define WHERE_DUPLICATES_OK 0x0010 /* Ok to return a row more than once */ +#define WHERE_OR_SUBCLAUSE 0x0020 /* Processing a sub-WHERE as part of + ** the OR optimization */ +#define WHERE_GROUPBY 0x0040 /* pOrderBy is really a GROUP BY */ +#define WHERE_DISTINCTBY 0x0080 /* pOrderby is really a DISTINCT clause */ +#define WHERE_WANT_DISTINCT 0x0100 /* All output needs to be distinct */ +#define WHERE_SORTBYGROUP 0x0200 /* Support sqlite3WhereIsSorted() */ +#define WHERE_SEEK_TABLE 0x0400 /* Do not defer seeks on main table */ +#define WHERE_ORDERBY_LIMIT 0x0800 /* ORDERBY+LIMIT on the inner loop */ +#define WHERE_SEEK_UNIQ_TABLE 0x1000 /* Do not defer seeks if unique */ + /* 0x2000 not currently used */ +#define WHERE_USE_LIMIT 0x4000 /* Use the LIMIT in cost estimates */ + /* 0x8000 not currently used */ /* Allowed return values from sqlite3WhereIsDistinct() */ @@ -11428,12 +15399,12 @@ struct SrcList { ** pEList corresponds to the result set of a SELECT and is NULL for ** other statements. ** -** NameContexts can be nested. When resolving names, the inner-most +** NameContexts can be nested. When resolving names, the inner-most ** context is searched first. If no match is found, the next outer ** context is checked. If there is still no match, the next context ** is checked. This process continues until either a match is found ** or all contexts are check. When a match is found, the nRef member of -** the context containing the match is incremented. +** the context containing the match is incremented. ** ** Each subquery gets a new NameContext. The pNext field points to the ** NameContext in the parent query. Thus the process of scanning the @@ -11448,17 +15419,25 @@ struct NameContext { NameContext *pNext; /* Next outer name context. NULL for outermost */ int nRef; /* Number of names resolved by this context */ int nErr; /* Number of errors encountered while resolving names */ - u8 ncFlags; /* Zero or more NC_* flags defined below */ + u16 ncFlags; /* Zero or more NC_* flags defined below */ }; /* ** Allowed values for the NameContext, ncFlags field. +** +** Value constraints (all checked via assert()): +** NC_HasAgg == SF_HasAgg +** NC_MinMaxAgg == SF_MinMaxAgg == SQLITE_FUNC_MINMAX +** */ -#define NC_AllowAgg 0x01 /* Aggregate functions are allowed here */ -#define NC_HasAgg 0x02 /* One or more aggregate functions seen */ -#define NC_IsCheck 0x04 /* True if resolving names in a CHECK constraint */ -#define NC_InAggFunc 0x08 /* True if analyzing arguments to an agg func */ -#define NC_PartIdx 0x10 /* True if resolving a partial index WHERE */ +#define NC_AllowAgg 0x0001 /* Aggregate functions are allowed here */ +#define NC_PartIdx 0x0002 /* True if resolving a partial index WHERE */ +#define NC_IsCheck 0x0004 /* True if resolving names in a CHECK constraint */ +#define NC_InAggFunc 0x0008 /* True if analyzing arguments to an agg func */ +#define NC_HasAgg 0x0010 /* One or more aggregate functions seen */ +#define NC_IdxExpr 0x0020 /* True if resolving columns of CREATE INDEX */ +#define NC_VarSelect 0x0040 /* A correlated subquery has been seen */ +#define NC_MinMaxAgg 0x1000 /* min/max aggregates seen. See note above */ /* ** An instance of the following structure contains all information @@ -11483,10 +15462,13 @@ struct NameContext { struct Select { ExprList *pEList; /* The fields of the result */ u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */ - u16 selFlags; /* Various SF_* values */ + LogEst nSelectRow; /* Estimated number of result rows */ + u32 selFlags; /* Various SF_* values */ int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */ - int addrOpenEphm[3]; /* OP_OpenEphem opcodes related to this select */ - u64 nSelectRow; /* Estimated number of result rows */ +#if SELECTTRACE_ENABLED + char zSelName[12]; /* Symbolic name of this SELECT use for debugging */ +#endif + int addrOpenEphm[2]; /* OP_OpenEphem opcodes related to this select */ SrcList *pSrc; /* The FROM clause */ Expr *pWhere; /* The WHERE clause */ ExprList *pGroupBy; /* The GROUP BY clause */ @@ -11494,7 +15476,6 @@ struct Select { ExprList *pOrderBy; /* The ORDER BY clause */ Select *pPrior; /* Prior select in a compound select statement */ Select *pNext; /* Next select to the left in a compound */ - Select *pRightmost; /* Right-most select in a compound select statement */ Expr *pLimit; /* LIMIT expression. NULL means not used. */ Expr *pOffset; /* OFFSET expression. NULL means not used. */ With *pWith; /* WITH clause attached to this select. Or NULL. */ @@ -11503,19 +15484,30 @@ struct Select { /* ** Allowed values for Select.selFlags. The "SF" prefix stands for ** "Select Flag". +** +** Value constraints (all checked via assert()) +** SF_HasAgg == NC_HasAgg +** SF_MinMaxAgg == NC_MinMaxAgg == SQLITE_FUNC_MINMAX +** SF_FixedLimit == WHERE_USE_LIMIT */ -#define SF_Distinct 0x0001 /* Output should be DISTINCT */ -#define SF_Resolved 0x0002 /* Identifiers have been resolved */ -#define SF_Aggregate 0x0004 /* Contains aggregate functions */ -#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */ -#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */ -#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */ -#define SF_UseSorter 0x0040 /* Sort using a sorter */ -#define SF_Values 0x0080 /* Synthesized from VALUES clause */ -#define SF_Materialize 0x0100 /* Force materialization of views */ -#define SF_NestedFrom 0x0200 /* Part of a parenthesized FROM clause */ -#define SF_MaybeConvert 0x0400 /* Need convertCompoundSelectToSubquery() */ -#define SF_Recursive 0x0800 /* The recursive part of a recursive CTE */ +#define SF_Distinct 0x00001 /* Output should be DISTINCT */ +#define SF_All 0x00002 /* Includes the ALL keyword */ +#define SF_Resolved 0x00004 /* Identifiers have been resolved */ +#define SF_Aggregate 0x00008 /* Contains agg functions or a GROUP BY */ +#define SF_HasAgg 0x00010 /* Contains aggregate functions */ +#define SF_UsesEphemeral 0x00020 /* Uses the OpenEphemeral opcode */ +#define SF_Expanded 0x00040 /* sqlite3SelectExpand() called on this */ +#define SF_HasTypeInfo 0x00080 /* FROM subqueries have Table metadata */ +#define SF_Compound 0x00100 /* Part of a compound query */ +#define SF_Values 0x00200 /* Synthesized from VALUES clause */ +#define SF_MultiValue 0x00400 /* Single VALUES term with multiple rows */ +#define SF_NestedFrom 0x00800 /* Part of a parenthesized FROM clause */ +#define SF_MinMaxAgg 0x01000 /* Aggregate containing min() or max() */ +#define SF_Recursive 0x02000 /* The recursive part of a recursive CTE */ +#define SF_FixedLimit 0x04000 /* nSelectRow set by a constant LIMIT */ +#define SF_MaybeConvert 0x08000 /* Need convertCompoundSelectToSubquery() */ +#define SF_Converted 0x10000 /* By convertCompoundSelectToSubquery() */ +#define SF_IncludeHidden 0x20000 /* Include hidden columns in output */ /* @@ -11523,7 +15515,7 @@ struct Select { ** by one of the following macros. The "SRT" prefix means "SELECT Result ** Type". ** -** SRT_Union Store results as a key in a temporary index +** SRT_Union Store results as a key in a temporary index ** identified by pDest->iSDParm. ** ** SRT_Except Remove results from the temporary index pDest->iSDParm. @@ -11547,7 +15539,7 @@ struct Select { ** of the query. This destination implies "LIMIT 1". ** ** SRT_Set The result must be a single column. Store each -** row of result as the key in table pDest->iSDParm. +** row of result as the key in table pDest->iSDParm. ** Apply the affinity pDest->affSdst before storing ** results. Used to implement "IN (SELECT ...)". ** @@ -11564,13 +15556,15 @@ struct Select { ** starting with pDest->iSdst. ** ** SRT_Table Store results in temporary table pDest->iSDParm. -** This is like SRT_EphemTab except that the table -** is assumed to already be open. +** SRT_Fifo This is like SRT_EphemTab except that the table +** is assumed to already be open. SRT_Fifo has +** the additional property of being able to ignore +** the ORDER BY clause. ** -** SRT_DistTable Store results in a temporary table pDest->iSDParm. +** SRT_DistFifo Store results in a temporary table pDest->iSDParm. ** But also use temporary table pDest->iSDParm+1 as ** a record of all prior results and ignore any duplicate -** rows. Name means: "Distinct Table". +** rows. Name means: "Distinct Fifo". ** ** SRT_Queue Store results in priority queue pDest->iSDParm (really ** an index). Append a sequence number so that all entries @@ -11584,19 +15578,20 @@ struct Select { #define SRT_Except 2 /* Remove result from a UNION index */ #define SRT_Exists 3 /* Store 1 if the result is not empty */ #define SRT_Discard 4 /* Do not save the results anywhere */ +#define SRT_Fifo 5 /* Store result as data with an automatic rowid */ +#define SRT_DistFifo 6 /* Like SRT_Fifo, but unique results only */ +#define SRT_Queue 7 /* Store result in an queue */ +#define SRT_DistQueue 8 /* Like SRT_Queue, but unique results only */ /* The ORDER BY clause is ignored for all of the above */ -#define IgnorableOrderby(X) ((X->eDest)<=SRT_Discard) +#define IgnorableOrderby(X) ((X->eDest)<=SRT_DistQueue) -#define SRT_Output 5 /* Output each row of result */ -#define SRT_Mem 6 /* Store result in a memory cell */ -#define SRT_Set 7 /* Store results as keys in an index */ -#define SRT_EphemTab 8 /* Create transient tab and store like SRT_Table */ -#define SRT_Coroutine 9 /* Generate a single row of result */ -#define SRT_Table 10 /* Store result as data with an automatic rowid */ -#define SRT_DistTable 11 /* Like SRT_Table, but unique results only */ -#define SRT_Queue 12 /* Store result in an queue */ -#define SRT_DistQueue 13 /* Like SRT_Queue, but unique results only */ +#define SRT_Output 9 /* Output each row of result */ +#define SRT_Mem 10 /* Store result in a memory cell */ +#define SRT_Set 11 /* Store results as keys in an index */ +#define SRT_EphemTab 12 /* Create transient tab and store like SRT_Table */ +#define SRT_Coroutine 13 /* Generate a single row of result */ +#define SRT_Table 14 /* Store result as data with an automatic rowid */ /* ** An instance of this object describes where to put of the results of @@ -11604,7 +15599,7 @@ struct Select { */ struct SelectDest { u8 eDest; /* How to dispose of the results. On of SRT_* above. */ - char affSdst; /* Affinity used when eDest==SRT_Set */ + char *zAffSdst; /* Affinity used when eDest==SRT_Set */ int iSDParm; /* A parameter used by the eDest disposal method */ int iSdst; /* Base register where results are written */ int nSdst; /* Number of registers allocated */ @@ -11612,11 +15607,11 @@ struct SelectDest { }; /* -** During code generation of statements that do inserts into AUTOINCREMENT +** During code generation of statements that do inserts into AUTOINCREMENT ** tables, the following information is attached to the Table.u.autoInc.p ** pointer of each autoincrement table to record some side information that ** the code generator needs. We have to keep per-table autoincrement -** information in case inserts are down within triggers. Triggers do not +** information in case inserts are done within triggers. Triggers do not ** normally coordinate their activities, but we do need to coordinate the ** loading and saving of autoincrement information. */ @@ -11635,7 +15630,7 @@ struct AutoincInfo { #endif /* -** At least one instance of the following structure is created for each +** At least one instance of the following structure is created for each ** trigger that may be fired while parsing an INSERT, UPDATE or DELETE ** statement. All such objects are stored in the linked list headed at ** Parse.pTriggerPrg and deleted once statement compilation has been @@ -11648,7 +15643,7 @@ struct AutoincInfo { ** values for both pTrigger and orconf. ** ** The TriggerPrg.aColmask[0] variable is set to a mask of old.* columns -** accessed (or set to 0 for triggers fired as a result of INSERT +** accessed (or set to 0 for triggers fired as a result of INSERT ** statements). Similarly, the TriggerPrg.aColmask[1] variable is set to ** a mask of new.* columns used by the program. */ @@ -11664,9 +15659,19 @@ struct TriggerPrg { ** The yDbMask datatype for the bitmask of all attached databases. */ #if SQLITE_MAX_ATTACHED>30 - typedef sqlite3_uint64 yDbMask; + typedef unsigned char yDbMask[(SQLITE_MAX_ATTACHED+9)/8]; +# define DbMaskTest(M,I) (((M)[(I)/8]&(1<<((I)&7)))!=0) +# define DbMaskZero(M) memset((M),0,sizeof(M)) +# define DbMaskSet(M,I) (M)[(I)/8]|=(1<<((I)&7)) +# define DbMaskAllZero(M) sqlite3DbMaskAllZero(M) +# define DbMaskNonZero(M) (sqlite3DbMaskAllZero(M)==0) #else typedef unsigned int yDbMask; +# define DbMaskTest(M,I) (((M)&(((yDbMask)1)<<(I)))!=0) +# define DbMaskZero(M) (M)=0 +# define DbMaskSet(M,I) (M)|=(((yDbMask)1)<<(I)) +# define DbMaskAllZero(M) (M)==0 +# define DbMaskNonZero(M) (M)!=0 #endif /* @@ -11679,7 +15684,7 @@ struct TriggerPrg { ** is constant but the second part is reset at the beginning and end of ** each recursion. ** -** The nTableLock and aTableLock variables are only used if the shared-cache +** The nTableLock and aTableLock variables are only used if the shared-cache ** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are ** used to store the set of table-locks required by the statement being ** compiled. Function sqlite3TableLock() is used to add entries to the @@ -11694,56 +15699,44 @@ struct Parse { u8 checkSchema; /* Causes schema cookie check after an error */ u8 nested; /* Number of nested calls to the parser/code generator */ u8 nTempReg; /* Number of temporary registers in aTempReg[] */ - u8 nTempInUse; /* Number of aTempReg[] currently checked out */ - u8 nColCache; /* Number of entries in aColCache[] */ - u8 iColCache; /* Next entry in aColCache[] to replace */ u8 isMultiWrite; /* True if statement may modify/insert multiple rows */ u8 mayAbort; /* True if statement may throw an ABORT exception */ u8 hasCompound; /* Need to invoke convertCompoundSelectToSubquery() */ - int aTempReg[8]; /* Holding area for temporary registers */ + u8 okConstFactor; /* OK to factor out constants */ + u8 disableLookaside; /* Number of times lookaside has been disabled */ + u8 nColCache; /* Number of entries in aColCache[] */ int nRangeReg; /* Size of the temporary register block */ int iRangeReg; /* First register in temporary register block */ int nErr; /* Number of errors seen */ int nTab; /* Number of previously allocated VDBE cursors */ int nMem; /* Number of memory cells used so far */ - int nSet; /* Number of sets used so far */ - int nOnce; /* Number of OP_Once instructions so far */ int nOpAlloc; /* Number of slots allocated for Vdbe.aOp[] */ - int nLabel; /* Number of labels used */ - int *aLabel; /* Space to hold the labels */ - int iFixedOp; /* Never back out opcodes iFixedOp-1 or earlier */ + int szOpAlloc; /* Bytes of memory space allocated for Vdbe.aOp[] */ int ckBase; /* Base register of data during check constraints */ - int iPartIdxTab; /* Table corresponding to a partial index */ + int iSelfTab; /* Table of an index whose exprs are being coded */ int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */ int iCacheCnt; /* Counter used to generate aColCache[].lru values */ - struct yColCache { - int iTable; /* Table cursor number */ - int iColumn; /* Table column number */ - u8 tempReg; /* iReg is a temp register that needs to be freed */ - int iLevel; /* Nesting level */ - int iReg; /* Reg with value of this column. 0 means none. */ - int lru; /* Least recently used entry has the smallest value */ - } aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */ + int nLabel; /* Number of labels used */ + int *aLabel; /* Space to hold the labels */ ExprList *pConstExpr;/* Constant expressions */ + Token constraintName;/* Name of the constraint currently being parsed */ yDbMask writeMask; /* Start a write transaction on these databases */ yDbMask cookieMask; /* Bitmask of schema verified databases */ - int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */ - int cookieValue[SQLITE_MAX_ATTACHED+2]; /* Values of cookies to verify */ int regRowid; /* Register holding rowid of CREATE TABLE entry */ int regRoot; /* Register holding root page number for new objects */ int nMaxArg; /* Max args passed to user function by sub-program */ - Token constraintName;/* Name of the constraint currently being parsed */ +#if SELECTTRACE_ENABLED + int nSelect; /* Number of SELECT statements seen */ + int nSelectIndent; /* How far to indent SELECTTRACE() output */ +#endif #ifndef SQLITE_OMIT_SHARED_CACHE int nTableLock; /* Number of locks in aTableLock */ TableLock *aTableLock; /* Required table locks for shared-cache mode */ #endif AutoincInfo *pAinc; /* Information about AUTOINCREMENT counters */ - - /* Information used while coding trigger programs. */ Parse *pToplevel; /* Parse structure for main program (or NULL) */ Table *pTriggerTab; /* Table triggers are being coded for */ int addrCrTab; /* Address of OP_CreateTable opcode on CREATE TABLE */ - int addrSkipPK; /* Address of instruction to skip PRIMARY KEY index */ u32 nQueryLoop; /* Est number of iterations of a query (10*log2(N)) */ u32 oldmask; /* Mask of old.* columns referenced */ u32 newmask; /* Mask of new.* columns referenced */ @@ -11751,31 +15744,50 @@ struct Parse { u8 eOrconf; /* Default ON CONFLICT policy for trigger steps */ u8 disableTriggers; /* True to disable triggers */ - /* Above is constant between recursions. Below is reset before and after - ** each recursion */ + /************************************************************************** + ** Fields above must be initialized to zero. The fields that follow, + ** down to the beginning of the recursive section, do not need to be + ** initialized as they will be set before being used. The boundary is + ** determined by offsetof(Parse,aColCache). + **************************************************************************/ - int nVar; /* Number of '?' variables seen in the SQL so far */ - int nzVar; /* Number of available slots in azVar[] */ + struct yColCache { + int iTable; /* Table cursor number */ + i16 iColumn; /* Table column number */ + u8 tempReg; /* iReg is a temp register that needs to be freed */ + int iLevel; /* Nesting level */ + int iReg; /* Reg with value of this column. 0 means none. */ + int lru; /* Least recently used entry has the smallest value */ + } aColCache[SQLITE_N_COLCACHE]; /* One for each column cache entry */ + int aTempReg[8]; /* Holding area for temporary registers */ + Token sNameToken; /* Token with unqualified schema object name */ + + /************************************************************************ + ** Above is constant between recursions. Below is reset before and after + ** each recursion. The boundary between these two regions is determined + ** using offsetof(Parse,sLastToken) so the sLastToken field must be the + ** first field in the recursive region. + ************************************************************************/ + + Token sLastToken; /* The last token parsed */ + ynVar nVar; /* Number of '?' variables seen in the SQL so far */ u8 iPkSortOrder; /* ASC or DESC for INTEGER PRIMARY KEY */ u8 explain; /* True if the EXPLAIN flag is found on the query */ #ifndef SQLITE_OMIT_VIRTUALTABLE u8 declareVtab; /* True if inside sqlite3_declare_vtab() */ int nVtabLock; /* Number of virtual tables to lock */ #endif - int nAlias; /* Number of aliased result set columns */ int nHeight; /* Expression tree height of current sub-select */ #ifndef SQLITE_OMIT_EXPLAIN int iSelectId; /* ID of current select for EXPLAIN output */ int iNextSelectId; /* Next available select ID for EXPLAIN output */ #endif - char **azVar; /* Pointers to names of parameters */ + VList *pVList; /* Mapping between variable names and numbers */ Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */ const char *zTail; /* All SQL text past the last semicolon parsed */ Table *pNewTable; /* A table being constructed by CREATE TABLE */ Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */ const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */ - Token sNameToken; /* Token with unqualified schema object name */ - Token sLastToken; /* The last token parsed */ #ifndef SQLITE_OMIT_VIRTUALTABLE Token sArg; /* Complete text of a module argument */ Table **apVtabLock; /* Pointer to virtual tables needing locking */ @@ -11783,9 +15795,17 @@ struct Parse { Table *pZombieTab; /* List of Table objects to delete after code gen */ TriggerPrg *pTriggerPrg; /* Linked list of coded triggers */ With *pWith; /* Current WITH clause, or NULL */ - u8 bFreeWith; /* True if pWith should be freed with parser */ + With *pWithToFree; /* Free this WITH object at the end of the parse */ }; +/* +** Sizes and pointers of various parts of the Parse object. +*/ +#define PARSE_HDR_SZ offsetof(Parse,aColCache) /* Recursive part w/o aColCache*/ +#define PARSE_RECURSE_SZ offsetof(Parse,sLastToken) /* Recursive part */ +#define PARSE_TAIL_SZ (sizeof(Parse)-PARSE_RECURSE_SZ) /* Non-recursive part */ +#define PARSE_TAIL(X) (((char*)(X))+PARSE_RECURSE_SZ) /* Pointer to tail */ + /* ** Return true if currently inside an sqlite3_declare_vtab() call. */ @@ -11806,25 +15826,40 @@ struct AuthContext { /* ** Bitfield flags for P5 value in various opcodes. +** +** Value constraints (enforced via assert()): +** OPFLAG_LENGTHARG == SQLITE_FUNC_LENGTH +** OPFLAG_TYPEOFARG == SQLITE_FUNC_TYPEOF +** OPFLAG_BULKCSR == BTREE_BULKLOAD +** OPFLAG_SEEKEQ == BTREE_SEEK_EQ +** OPFLAG_FORDELETE == BTREE_FORDELETE +** OPFLAG_SAVEPOSITION == BTREE_SAVEPOSITION +** OPFLAG_AUXDELETE == BTREE_AUXDELETE */ -#define OPFLAG_NCHANGE 0x01 /* Set to update db->nChange */ -#define OPFLAG_LASTROWID 0x02 /* Set to update db->lastRowid */ +#define OPFLAG_NCHANGE 0x01 /* OP_Insert: Set to update db->nChange */ + /* Also used in P2 (not P5) of OP_Delete */ +#define OPFLAG_EPHEM 0x01 /* OP_Column: Ephemeral output is ok */ +#define OPFLAG_LASTROWID 0x20 /* Set to update db->lastRowid */ #define OPFLAG_ISUPDATE 0x04 /* This OP_Insert is an sql UPDATE */ #define OPFLAG_APPEND 0x08 /* This is likely to be an append */ #define OPFLAG_USESEEKRESULT 0x10 /* Try to avoid a seek in BtreeInsert() */ -#define OPFLAG_CLEARCACHE 0x20 /* Clear pseudo-table cache in OP_Column */ +#define OPFLAG_ISNOOP 0x40 /* OP_Delete does pre-update-hook only */ #define OPFLAG_LENGTHARG 0x40 /* OP_Column only used for length() */ #define OPFLAG_TYPEOFARG 0x80 /* OP_Column only used for typeof() */ #define OPFLAG_BULKCSR 0x01 /* OP_Open** used to open bulk cursor */ -#define OPFLAG_P2ISREG 0x02 /* P2 to OP_Open** is a register number */ +#define OPFLAG_SEEKEQ 0x02 /* OP_Open** cursor uses EQ seek only */ +#define OPFLAG_FORDELETE 0x08 /* OP_Open should use BTREE_FORDELETE */ +#define OPFLAG_P2ISREG 0x10 /* P2 to OP_Open** is a register number */ #define OPFLAG_PERMUTE 0x01 /* OP_Compare: use the permutation */ +#define OPFLAG_SAVEPOSITION 0x02 /* OP_Delete/Insert: save cursor pos */ +#define OPFLAG_AUXDELETE 0x04 /* OP_Delete: index in a DELETE op */ /* * Each trigger present in the database schema is stored as an instance of - * struct Trigger. + * struct Trigger. * * Pointers to instances of struct Trigger are stored in two ways. - * 1. In the "trigHash" hash table (part of the sqlite3* that represents the + * 1. In the "trigHash" hash table (part of the sqlite3* that represents the * database). This allows Trigger structures to be retrieved by name. * 2. All triggers associated with a single table form a linked list, using the * pNext member of struct Trigger. A pointer to the first element of the @@ -11850,7 +15885,7 @@ struct Trigger { /* ** A trigger is either a BEFORE or an AFTER trigger. The following constants -** determine which. +** determine which. ** ** If there are multiple triggers, you might of some BEFORE and some AFTER. ** In that cases, the constants below can be ORed together. @@ -11860,48 +15895,48 @@ struct Trigger { /* * An instance of struct TriggerStep is used to store a single SQL statement - * that is a part of a trigger-program. + * that is a part of a trigger-program. * * Instances of struct TriggerStep are stored in a singly linked list (linked - * using the "pNext" member) referenced by the "step_list" member of the + * using the "pNext" member) referenced by the "step_list" member of the * associated struct Trigger instance. The first element of the linked list is * the first step of the trigger-program. - * + * * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or - * "SELECT" statement. The meanings of the other members is determined by the + * "SELECT" statement. The meanings of the other members is determined by the * value of "op" as follows: * * (op == TK_INSERT) * orconf -> stores the ON CONFLICT algorithm * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then * this stores a pointer to the SELECT statement. Otherwise NULL. - * target -> A token holding the quoted name of the table to insert into. + * zTarget -> Dequoted name of the table to insert into. * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then * this stores values to be inserted. Otherwise NULL. - * pIdList -> If this is an INSERT INTO ... () VALUES ... + * pIdList -> If this is an INSERT INTO ... () VALUES ... * statement, then this stores the column-names to be * inserted into. * * (op == TK_DELETE) - * target -> A token holding the quoted name of the table to delete from. + * zTarget -> Dequoted name of the table to delete from. * pWhere -> The WHERE clause of the DELETE statement if one is specified. * Otherwise NULL. - * + * * (op == TK_UPDATE) - * target -> A token holding the quoted name of the table to update rows of. + * zTarget -> Dequoted name of the table to update. * pWhere -> The WHERE clause of the UPDATE statement if one is specified. * Otherwise NULL. * pExprList -> A list of the columns to update and the expressions to update * them to. See sqlite3Update() documentation of "pChanges" * argument. - * + * */ struct TriggerStep { u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */ u8 orconf; /* OE_Rollback etc. */ Trigger *pTrig; /* The trigger that this step is a part of */ - Select *pSelect; /* SELECT statment or RHS of INSERT INTO .. SELECT ... */ - Token target; /* Target table for DELETE, UPDATE, INSERT */ + Select *pSelect; /* SELECT statement or RHS of INSERT INTO SELECT ... */ + char *zTarget; /* Target table for DELETE, UPDATE, INSERT */ Expr *pWhere; /* The WHERE clause for DELETE or UPDATE steps */ ExprList *pExprList; /* SET clause for UPDATE. */ IdList *pIdList; /* Column names for INSERT */ @@ -11912,7 +15947,7 @@ struct TriggerStep { /* ** The following structure contains information used by the sqliteFix... ** routines as they walk the parse tree to make database references -** explicit. +** explicit. */ typedef struct DbFixer DbFixer; struct DbFixer { @@ -11932,14 +15967,20 @@ struct StrAccum { sqlite3 *db; /* Optional database for lookaside. Can be NULL */ char *zBase; /* A base allocation. Not from malloc. */ char *zText; /* The string collected so far */ - int nChar; /* Length of the string so far */ - int nAlloc; /* Amount of space allocated in zText */ - int mxAlloc; /* Maximum allowed string length */ - u8 useMalloc; /* 0: none, 1: sqlite3DbMalloc, 2: sqlite3_malloc */ + u32 nChar; /* Length of the string so far */ + u32 nAlloc; /* Amount of space allocated in zText */ + u32 mxAlloc; /* Maximum allowed allocation. 0 for no malloc usage */ u8 accError; /* STRACCUM_NOMEM or STRACCUM_TOOBIG */ + u8 printfFlags; /* SQLITE_PRINTF flags below */ }; #define STRACCUM_NOMEM 1 #define STRACCUM_TOOBIG 2 +#define SQLITE_PRINTF_INTERNAL 0x01 /* Internal-use-only converters allowed */ +#define SQLITE_PRINTF_SQLFUNC 0x02 /* SQL function arguments to VXPrintf */ +#define SQLITE_PRINTF_MALLOCED 0x04 /* True if xText is allocated space */ + +#define isMalloced(X) (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0) + /* ** A pointer to this structure is used to communicate information @@ -11967,6 +16008,7 @@ struct Sqlite3Config { int neverCorrupt; /* Database is always well-formed */ int szLookaside; /* Default lookaside buffer size */ int nLookaside; /* Default lookaside buffer count */ + int nStmtSpill; /* Stmt-journal spill-to-disk threshold */ sqlite3_mem_methods m; /* Low-level memory allocation interface */ sqlite3_mutex_methods mutex; /* Low-level mutex interface */ sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */ @@ -11983,6 +16025,7 @@ struct Sqlite3Config { int nPage; /* Number of pages in pPage[] */ int mxParserStack; /* maximum depth of the parser stack */ int sharedCacheEnabled; /* true if shared-cache mode enabled */ + u32 szPma; /* Maximum Sorter PMA size */ /* The above might be initialized to non-zero. The following need to always ** initially be zero, however. */ int isInit; /* True after initialization has finished */ @@ -11990,15 +16033,26 @@ struct Sqlite3Config { int isMutexInit; /* True after mutexes are initialized */ int isMallocInit; /* True after malloc is initialized */ int isPCacheInit; /* True after malloc is initialized */ - sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */ int nRefInitMutex; /* Number of users of pInitMutex */ + sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */ void (*xLog)(void*,int,const char*); /* Function for logging */ void *pLogArg; /* First argument to xLog() */ - int bLocaltimeFault; /* True to fail localtime() calls */ #ifdef SQLITE_ENABLE_SQLLOG void(*xSqllog)(void*,sqlite3*,const char*, int); void *pSqllogArg; #endif +#ifdef SQLITE_VDBE_COVERAGE + /* The following callback (if not NULL) is invoked on every VDBE branch + ** operation. Set the callback using SQLITE_TESTCTRL_VDBE_COVERAGE. + */ + void (*xVdbeBranch)(void*,int iSrcLine,u8 eThis,u8 eMx); /* Callback */ + void *pVdbeBranchArg; /* 1st argument */ +#endif +#ifndef SQLITE_UNTESTABLE + int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */ +#endif + int bLocaltimeFault; /* True to fail localtime() calls */ + int iOnceResetThreshold; /* When to reset OP_Once counters */ }; /* @@ -12023,16 +16077,21 @@ struct Sqlite3Config { ** Context pointer passed down through the tree-walk. */ struct Walker { + Parse *pParse; /* Parser context. */ int (*xExprCallback)(Walker*, Expr*); /* Callback for expressions */ int (*xSelectCallback)(Walker*,Select*); /* Callback for SELECTs */ void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */ - Parse *pParse; /* Parser context. */ int walkerDepth; /* Number of subqueries */ + u8 eCode; /* A small processing code */ union { /* Extra data for callback */ NameContext *pNC; /* Naming context */ - int i; /* Integer value */ + int n; /* A counter */ + int iCur; /* A cursor number */ SrcList *pSrcList; /* FROM clause */ struct SrcCount *pSrcCount; /* Counting column references */ + struct CCurHint *pCCurHint; /* Used by codeCursorHint() */ + int *aiCol; /* array of column indexes */ + struct IdxCover *pIdxCover; /* Check for index coverage */ } u; }; @@ -12042,6 +16101,7 @@ SQLITE_PRIVATE int sqlite3WalkExprList(Walker*, ExprList*); SQLITE_PRIVATE int sqlite3WalkSelect(Walker*, Select*); SQLITE_PRIVATE int sqlite3WalkSelectExpr(Walker*, Select*); SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker*, Select*); +SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker*, Expr*); /* ** Return code from the parse-tree walking primitives and their @@ -12062,10 +16122,21 @@ struct With { char *zName; /* Name of this CTE */ ExprList *pCols; /* List of explicit column names, or NULL */ Select *pSelect; /* The definition of this CTE */ - const char *zErr; /* Error message for circular references */ + const char *zCteErr; /* Error message for circular references */ } a[1]; }; +#ifdef SQLITE_DEBUG +/* +** An instance of the TreeView object is used for printing the content of +** data structures on sqlite3DebugPrintf() using a tree-like view. +*/ +struct TreeView { + int iLevel; /* Which level of the tree we are on */ + u8 bLine[100]; /* Draw vertical in column i if bLine[i] is true */ +}; +#endif /* SQLITE_DEBUG */ + /* ** Assuming zIn points to the first byte of a UTF-8 character, ** advance zIn to point to the first byte of the next UTF-8 character. @@ -12089,15 +16160,31 @@ SQLITE_PRIVATE int sqlite3CantopenError(int); #define SQLITE_CORRUPT_BKPT sqlite3CorruptError(__LINE__) #define SQLITE_MISUSE_BKPT sqlite3MisuseError(__LINE__) #define SQLITE_CANTOPEN_BKPT sqlite3CantopenError(__LINE__) +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3NomemError(int); +SQLITE_PRIVATE int sqlite3IoerrnomemError(int); +# define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__) +# define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__) +#else +# define SQLITE_NOMEM_BKPT SQLITE_NOMEM +# define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM +#endif +/* +** FTS3 and FTS4 both require virtual table support +*/ +#if defined(SQLITE_OMIT_VIRTUALTABLE) +# undef SQLITE_ENABLE_FTS3 +# undef SQLITE_ENABLE_FTS4 +#endif /* ** FTS4 is really an extension for FTS3. It is enabled using the -** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all -** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3. +** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also call +** the SQLITE_ENABLE_FTS4 macro to serve as an alias for SQLITE_ENABLE_FTS3. */ #if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3) -# define SQLITE_ENABLE_FTS3 +# define SQLITE_ENABLE_FTS3 1 #endif /* @@ -12122,6 +16209,7 @@ SQLITE_PRIVATE int sqlite3CantopenError(int); # define sqlite3Isdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x04) # define sqlite3Isxdigit(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x08) # define sqlite3Tolower(x) (sqlite3UpperToLower[(unsigned char)(x)]) +# define sqlite3Isquote(x) (sqlite3CtypeMap[(unsigned char)(x)]&0x80) #else # define sqlite3Toupper(x) toupper((unsigned char)(x)) # define sqlite3Isspace(x) isspace((unsigned char)(x)) @@ -12130,26 +16218,32 @@ SQLITE_PRIVATE int sqlite3CantopenError(int); # define sqlite3Isdigit(x) isdigit((unsigned char)(x)) # define sqlite3Isxdigit(x) isxdigit((unsigned char)(x)) # define sqlite3Tolower(x) tolower((unsigned char)(x)) +# define sqlite3Isquote(x) ((x)=='"'||(x)=='\''||(x)=='['||(x)=='`') +#endif +#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS +SQLITE_PRIVATE int sqlite3IsIdChar(u8); #endif /* ** Internal function prototypes */ -#define sqlite3StrICmp sqlite3_stricmp +SQLITE_PRIVATE int sqlite3StrICmp(const char*,const char*); SQLITE_PRIVATE int sqlite3Strlen30(const char*); +SQLITE_PRIVATE char *sqlite3ColumnType(Column*,char*); #define sqlite3StrNICmp sqlite3_strnicmp SQLITE_PRIVATE int sqlite3MallocInit(void); SQLITE_PRIVATE void sqlite3MallocEnd(void); -SQLITE_PRIVATE void *sqlite3Malloc(int); -SQLITE_PRIVATE void *sqlite3MallocZero(int); -SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, int); -SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, int); +SQLITE_PRIVATE void *sqlite3Malloc(u64); +SQLITE_PRIVATE void *sqlite3MallocZero(u64); +SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, u64); +SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, u64); +SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3*, u64); SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3*,const char*); -SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, int); -SQLITE_PRIVATE void *sqlite3Realloc(void*, int); -SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, int); -SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, int); +SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, u64); +SQLITE_PRIVATE void *sqlite3Realloc(void*, u64); +SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, u64); +SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, u64); SQLITE_PRIVATE void sqlite3DbFree(sqlite3*, void*); SQLITE_PRIVATE int sqlite3MallocSize(void*); SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3*, void*); @@ -12158,7 +16252,9 @@ SQLITE_PRIVATE void sqlite3ScratchFree(void*); SQLITE_PRIVATE void *sqlite3PageMalloc(int); SQLITE_PRIVATE void sqlite3PageFree(void*); SQLITE_PRIVATE void sqlite3MemSetDefault(void); +#ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE void sqlite3BenignMallocHooks(void (*)(void), void (*)(void)); +#endif SQLITE_PRIVATE int sqlite3HeapNearlyFull(void); /* @@ -12172,18 +16268,22 @@ SQLITE_PRIVATE int sqlite3HeapNearlyFull(void); #ifdef SQLITE_USE_ALLOCA # define sqlite3StackAllocRaw(D,N) alloca(N) # define sqlite3StackAllocZero(D,N) memset(alloca(N), 0, N) -# define sqlite3StackFree(D,P) +# define sqlite3StackFree(D,P) #else # define sqlite3StackAllocRaw(D,N) sqlite3DbMallocRaw(D,N) # define sqlite3StackAllocZero(D,N) sqlite3DbMallocZero(D,N) # define sqlite3StackFree(D,P) sqlite3DbFree(D,P) #endif -#ifdef SQLITE_ENABLE_MEMSYS3 -SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void); -#endif +/* Do not allow both MEMSYS5 and MEMSYS3 to be defined together. If they +** are, disable MEMSYS3 +*/ #ifdef SQLITE_ENABLE_MEMSYS5 SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys5(void); +#undef SQLITE_ENABLE_MEMSYS3 +#endif +#ifdef SQLITE_ENABLE_MEMSYS3 +SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void); #endif @@ -12194,10 +16294,20 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3MutexAlloc(int); SQLITE_PRIVATE int sqlite3MutexInit(void); SQLITE_PRIVATE int sqlite3MutexEnd(void); #endif +#if !defined(SQLITE_MUTEX_OMIT) && !defined(SQLITE_MUTEX_NOOP) +SQLITE_PRIVATE void sqlite3MemoryBarrier(void); +#else +# define sqlite3MemoryBarrier() +#endif -SQLITE_PRIVATE int sqlite3StatusValue(int); -SQLITE_PRIVATE void sqlite3StatusAdd(int, int); -SQLITE_PRIVATE void sqlite3StatusSet(int, int); +SQLITE_PRIVATE sqlite3_int64 sqlite3StatusValue(int); +SQLITE_PRIVATE void sqlite3StatusUp(int, int); +SQLITE_PRIVATE void sqlite3StatusDown(int, int); +SQLITE_PRIVATE void sqlite3StatusHighwater(int, int); + +/* Access to mutexes used by sqlite3_status() */ +SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void); +SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void); #ifndef SQLITE_OMIT_FLOATING_POINT SQLITE_PRIVATE int sqlite3IsNaN(double); @@ -12215,45 +16325,30 @@ struct PrintfArguments { sqlite3_value **apArg; /* The argument values */ }; -#define SQLITE_PRINTF_INTERNAL 0x01 -#define SQLITE_PRINTF_SQLFUNC 0x02 -SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, u32, const char*, va_list); -SQLITE_PRIVATE void sqlite3XPrintf(StrAccum*, u32, const char*, ...); +SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, const char*, va_list); +SQLITE_PRIVATE void sqlite3XPrintf(StrAccum*, const char*, ...); SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...); SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list); -SQLITE_PRIVATE char *sqlite3MAppendf(sqlite3*,char*,const char*,...); -#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) +#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) SQLITE_PRIVATE void sqlite3DebugPrintf(const char*, ...); #endif #if defined(SQLITE_TEST) SQLITE_PRIVATE void *sqlite3TestTextToPtr(const char*); #endif -/* Output formatting for SQLITE_TESTCTRL_EXPLAIN */ -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) -SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe*); -SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe*, const char*, ...); -SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe*); -SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe*); -SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe*); -SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe*); -SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe*, Select*); -SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe*, Expr*); -SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe*, ExprList*); -SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe*); -#else -# define sqlite3ExplainBegin(X) -# define sqlite3ExplainSelect(A,B) -# define sqlite3ExplainExpr(A,B) -# define sqlite3ExplainExprList(A,B) -# define sqlite3ExplainFinish(X) -# define sqlite3VdbeExplanation(X) 0 +#if defined(SQLITE_DEBUG) +SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView*, const Expr*, u8); +SQLITE_PRIVATE void sqlite3TreeViewBareExprList(TreeView*, const ExprList*, const char*); +SQLITE_PRIVATE void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*); +SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView*, const Select*, u8); +SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView*, const With*, u8); #endif -SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*, ...); +SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*); SQLITE_PRIVATE void sqlite3ErrorMsg(Parse*, const char*, ...); -SQLITE_PRIVATE int sqlite3Dequote(char*); +SQLITE_PRIVATE void sqlite3Dequote(char*); +SQLITE_PRIVATE void sqlite3TokenInit(Token*,char*); SQLITE_PRIVATE int sqlite3KeywordCode(const unsigned char*, int); SQLITE_PRIVATE int sqlite3RunParser(Parse*, const char*, char **); SQLITE_PRIVATE void sqlite3FinishCoding(Parse*); @@ -12262,59 +16357,83 @@ SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse*,int); SQLITE_PRIVATE int sqlite3GetTempRange(Parse*,int); SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse*,int,int); SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse*); +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse*,int,int); +#endif SQLITE_PRIVATE Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int); SQLITE_PRIVATE Expr *sqlite3Expr(sqlite3*,int,const char*); SQLITE_PRIVATE void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*); -SQLITE_PRIVATE Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*); +SQLITE_PRIVATE Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*); +SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse*, Expr*, Select*); SQLITE_PRIVATE Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*); SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*); -SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*); +SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32); SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*); SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); +SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(Parse*,ExprList*,IdList*,Expr*); +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int); SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,ExprSpan*); SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*); +SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList*); SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**); SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**); SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); +#ifndef SQLITE_OMIT_VIRTUALTABLE +SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3*,const char *zName); +#endif SQLITE_PRIVATE void sqlite3ResetAllSchemasOfConnection(sqlite3*); SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int); SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*); -SQLITE_PRIVATE void sqlite3BeginParse(Parse*,int); SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*); +SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*); +SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**); +SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*); SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*); SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int); SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*); SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16); SQLITE_PRIVATE void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int); -SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token*); +#if SQLITE_ENABLE_HIDDEN_COLUMNS +SQLITE_PRIVATE void sqlite3ColumnPropertiesFromName(Table*, Column*); +#else +# define sqlite3ColumnPropertiesFromName(T,C) /* no-op */ +#endif +SQLITE_PRIVATE void sqlite3AddColumn(Parse*,Token*,Token*); SQLITE_PRIVATE void sqlite3AddNotNull(Parse*, int); SQLITE_PRIVATE void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int); SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*); -SQLITE_PRIVATE void sqlite3AddColumnType(Parse*,Token*); SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,ExprSpan*); SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*); SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*); SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*, sqlite3_vfs**,char**,char **); SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*); -SQLITE_PRIVATE int sqlite3CodeOnce(Parse *); + +#ifdef SQLITE_UNTESTABLE +# define sqlite3FaultSim(X) SQLITE_OK +#else +SQLITE_PRIVATE int sqlite3FaultSim(int); +#endif SQLITE_PRIVATE Bitvec *sqlite3BitvecCreate(u32); SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec*, u32); +SQLITE_PRIVATE int sqlite3BitvecTestNotNull(Bitvec*, u32); SQLITE_PRIVATE int sqlite3BitvecSet(Bitvec*, u32); SQLITE_PRIVATE void sqlite3BitvecClear(Bitvec*, u32, void*); SQLITE_PRIVATE void sqlite3BitvecDestroy(Bitvec*); SQLITE_PRIVATE u32 sqlite3BitvecSize(Bitvec*); +#ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE int sqlite3BitvecBuiltinTest(int,int*); +#endif SQLITE_PRIVATE RowSet *sqlite3RowSetInit(sqlite3*, void*, unsigned int); SQLITE_PRIVATE void sqlite3RowSetClear(RowSet*); SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet*, i64); -SQLITE_PRIVATE int sqlite3RowSetTest(RowSet*, u8 iBatch, i64); +SQLITE_PRIVATE int sqlite3RowSetTest(RowSet*, int iBatch, i64); SQLITE_PRIVATE int sqlite3RowSetNext(RowSet*, i64*); -SQLITE_PRIVATE void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int); +SQLITE_PRIVATE void sqlite3CreateView(Parse*,Token*,Token*,Token*,ExprList*,Select*,int,int); #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse*,Table*); @@ -12322,6 +16441,9 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse*,Table*); # define sqlite3ViewGetColumnNames(A,B) 0 #endif +#if SQLITE_MAX_ATTACHED>30 +SQLITE_PRIVATE int sqlite3DbMaskAllZero(yDbMask); +#endif SQLITE_PRIVATE void sqlite3DropTable(Parse*, SrcList*, int, int); SQLITE_PRIVATE void sqlite3CodeDropTable(Parse*, Table*, int, int); SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3*, Table*); @@ -12332,7 +16454,6 @@ SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse); # define sqlite3AutoincrementBegin(X) # define sqlite3AutoincrementEnd(X) #endif -SQLITE_PRIVATE int sqlite3CodeCoroutine(Parse*, Select*, SelectDest*); SQLITE_PRIVATE void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int); SQLITE_PRIVATE void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*); SQLITE_PRIVATE IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*); @@ -12342,18 +16463,19 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*) SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*, Select*, Expr*, IdList*); SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *); +SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*); SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *, struct SrcList_item *); SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList*); SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse*, SrcList*); SQLITE_PRIVATE void sqlite3IdListDelete(sqlite3*, IdList*); SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3*, SrcList*); SQLITE_PRIVATE Index *sqlite3AllocateIndexObject(sqlite3*,i16,int,char**); -SQLITE_PRIVATE Index *sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, - Expr*, int, int); +SQLITE_PRIVATE void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, + Expr*, int, int, u8); SQLITE_PRIVATE void sqlite3DropIndex(Parse*, SrcList*, int); SQLITE_PRIVATE int sqlite3Select(Parse*, Select*, SelectDest*); SQLITE_PRIVATE Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*, - Expr*,ExprList*,u16,Expr*,Expr*); + Expr*,ExprList*,u32,Expr*,Expr*); SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3*, Select*); SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse*, SrcList*); SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, int); @@ -12365,49 +16487,66 @@ SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*); SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int); SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*,SrcList*,Expr*,ExprList*,ExprList*,u16,int); SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*); -SQLITE_PRIVATE u64 sqlite3WhereOutputRowCount(WhereInfo*); +SQLITE_PRIVATE LogEst sqlite3WhereOutputRowCount(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo*); +SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo*); +SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereContinueLabel(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo*, int*); +#define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */ +#define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */ +#define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */ +SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int); SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8); +SQLITE_PRIVATE void sqlite3ExprCodeGetColumnToReg(Parse*, Table*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCachePush(Parse*); -SQLITE_PRIVATE void sqlite3ExprCachePop(Parse*, int); +SQLITE_PRIVATE void sqlite3ExprCachePop(Parse*); SQLITE_PRIVATE void sqlite3ExprCacheRemove(Parse*, int, int); SQLITE_PRIVATE void sqlite3ExprCacheClear(Parse*); SQLITE_PRIVATE void sqlite3ExprCacheAffinityChange(Parse*, int, int); -SQLITE_PRIVATE int sqlite3ExprCode(Parse*, Expr*, int); -SQLITE_PRIVATE void sqlite3ExprCodeAtInit(Parse*, Expr*, int, u8); +SQLITE_PRIVATE void sqlite3ExprCode(Parse*, Expr*, int); +SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse*, Expr*, int); +SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse*, Expr*, int); +SQLITE_PRIVATE int sqlite3ExprCodeAtInit(Parse*, Expr*, int); SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*); SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprCodeAndCache(Parse*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, u8); +SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse*, Expr*, int); +SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8); #define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */ #define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */ +#define SQLITE_ECEL_REF 0x04 /* Use ExprList.u.x.iOrderByCol */ +#define SQLITE_ECEL_OMITREF 0x08 /* Omit if ExprList.u.x.iOrderByCol */ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse*, Expr*, int, int); SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse*, Expr*, int, int); +SQLITE_PRIVATE void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int); SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3*,const char*, const char*); -SQLITE_PRIVATE Table *sqlite3LocateTable(Parse*,int isView,const char*, const char*); -SQLITE_PRIVATE Table *sqlite3LocateTableItem(Parse*,int isView,struct SrcList_item *); +#define LOCATE_VIEW 0x01 +#define LOCATE_NOERR 0x02 +SQLITE_PRIVATE Table *sqlite3LocateTable(Parse*,u32 flags,const char*, const char*); +SQLITE_PRIVATE Table *sqlite3LocateTableItem(Parse*,u32 flags,struct SrcList_item *); SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3*,const char*, const char*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*); -SQLITE_PRIVATE void sqlite3Vacuum(Parse*); -SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*); +SQLITE_PRIVATE void sqlite3Vacuum(Parse*,Token*); +SQLITE_PRIVATE int sqlite3RunVacuum(char**, sqlite3*, int); SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3*, Token*); SQLITE_PRIVATE int sqlite3ExprCompare(Expr*, Expr*, int); SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList*, ExprList*, int); SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Expr*, Expr*, int); SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*); SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*); +SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx); SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr*, SrcList*); SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse*); +#ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE void sqlite3PrngSaveState(void); SQLITE_PRIVATE void sqlite3PrngRestoreState(void); +#endif SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3*,int); SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse*, int); SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse*, const char *zDb); @@ -12419,19 +16558,29 @@ SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *); SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3*); SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr*); SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr*); -SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr*); +SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr*, u8); +SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr*,int); +#ifdef SQLITE_ENABLE_CURSOR_HINTS +SQLITE_PRIVATE int sqlite3ExprContainsSubquery(Expr*); +#endif SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr*, int*); SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr*); -SQLITE_PRIVATE void sqlite3ExprCodeIsNullJump(Vdbe*, const Expr*, int, int); SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr*, char); SQLITE_PRIVATE int sqlite3IsRowid(const char*); -SQLITE_PRIVATE void sqlite3GenerateRowDelete(Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8); -SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*); +SQLITE_PRIVATE void sqlite3GenerateRowDelete( + Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int); +SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int); SQLITE_PRIVATE int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int); +SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse*,int); SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int, - u8,u8,int,int*); + u8,u8,int,int*,int*); +#ifdef SQLITE_ENABLE_NULL_TRIM +SQLITE_PRIVATE void sqlite3SetMakeRecordP5(Vdbe*,Table*); +#else +# define sqlite3SetMakeRecordP5(A,B) +#endif SQLITE_PRIVATE void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int); -SQLITE_PRIVATE int sqlite3OpenTableAndIndices(Parse*, Table*, int, int, u8*, int*, int*); +SQLITE_PRIVATE int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*); SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse*, int, int); SQLITE_PRIVATE void sqlite3MultiWrite(Parse*); SQLITE_PRIVATE void sqlite3MayAbort(Parse*); @@ -12443,11 +16592,16 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3*,ExprList*,int); SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3*,SrcList*,int); SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3*,IdList*); SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3*,Select*,int); -SQLITE_PRIVATE void sqlite3FuncDefInsert(FuncDefHash*, FuncDef*); -SQLITE_PRIVATE FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,u8); -SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(sqlite3*); +#if SELECTTRACE_ENABLED +SQLITE_PRIVATE void sqlite3SelectSetName(Select*,const char*); +#else +# define sqlite3SelectSetName(A,B) +#endif +SQLITE_PRIVATE void sqlite3InsertBuiltinFuncs(FuncDef*,int); +SQLITE_PRIVATE FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,u8,u8); +SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void); SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void); -SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void); +SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3*); SQLITE_PRIVATE int sqlite3SafetyCheckOk(sqlite3*); SQLITE_PRIVATE int sqlite3SafetyCheckSickOrOk(sqlite3*); SQLITE_PRIVATE void sqlite3ChangeCookie(Parse*, int); @@ -12478,6 +16632,7 @@ SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3*, Trigger*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int); # define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p)) +# define sqlite3IsToplevel(p) ((p)->pToplevel==0) #else # define sqlite3TriggersExist(B,C,D,E,F) 0 # define sqlite3DeleteTrigger(A,B) @@ -12487,6 +16642,7 @@ SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Tab # define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F) # define sqlite3TriggerList(X, Y) 0 # define sqlite3ParseToplevel(p) p +# define sqlite3IsToplevel(p) 1 # define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0 #endif @@ -12524,59 +16680,55 @@ SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst,LogEst); #ifndef SQLITE_OMIT_VIRTUALTABLE SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double); #endif +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ + defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ + defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst); +#endif +SQLITE_PRIVATE VList *sqlite3VListAdd(sqlite3*,VList*,const char*,int,int); +SQLITE_PRIVATE const char *sqlite3VListNumToName(VList*,int); +SQLITE_PRIVATE int sqlite3VListNameToNum(VList*,const char*,int); /* ** Routines to read and write variable-length integers. These used to ** be defined locally, but now we use the varint routines in the util.c -** file. Code should use the MACRO forms below, as the Varint32 versions -** are coded to assume the single byte case is already handled (which -** the MACRO form does). +** file. */ SQLITE_PRIVATE int sqlite3PutVarint(unsigned char*, u64); -SQLITE_PRIVATE int sqlite3PutVarint32(unsigned char*, u32); SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *, u64 *); SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *, u32 *); SQLITE_PRIVATE int sqlite3VarintLen(u64 v); /* -** The header of a record consists of a sequence variable-length integers. -** These integers are almost always small and are encoded as a single byte. -** The following macros take advantage this fact to provide a fast encode -** and decode of the integers in a record header. It is faster for the common -** case where the integer is a single byte. It is a little slower when the -** integer is two or more bytes. But overall it is faster. -** -** The following expressions are equivalent: -** -** x = sqlite3GetVarint32( A, &B ); -** x = sqlite3PutVarint32( A, B ); -** -** x = getVarint32( A, B ); -** x = putVarint32( A, B ); -** +** The common case is for a varint to be a single byte. They following +** macros handle the common case without a procedure call, but then call +** the procedure for larger varints. */ #define getVarint32(A,B) \ (u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B))) #define putVarint32(A,B) \ (u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\ - sqlite3PutVarint32((A),(B))) + sqlite3PutVarint((A),(B))) #define getVarint sqlite3GetVarint #define putVarint sqlite3PutVarint -SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *, Index *); -SQLITE_PRIVATE void sqlite3TableAffinityStr(Vdbe *, Table *); +SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3*, Index*); +SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe*, Table*, int); SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2); SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity); +SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table*,int); SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr); SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8); -SQLITE_PRIVATE void sqlite3Error(sqlite3*, int, const char*,...); +SQLITE_PRIVATE int sqlite3DecOrHexToI64(const char*, i64*); +SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...); +SQLITE_PRIVATE void sqlite3Error(sqlite3*,int); +SQLITE_PRIVATE void sqlite3SystemError(sqlite3*,int); SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3*, const char *z, int n); SQLITE_PRIVATE u8 sqlite3HexToInt(int h); SQLITE_PRIVATE int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); -#if defined(SQLITE_TEST) +#if defined(SQLITE_NEED_ERR_NAME) SQLITE_PRIVATE const char *sqlite3ErrName(int); #endif @@ -12585,7 +16737,7 @@ SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse); SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); -SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, Token*); +SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int); SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*); SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*); SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *, CollSeq *); @@ -12600,11 +16752,11 @@ SQLITE_PRIVATE void sqlite3FileSuffix3(const char*, char*); #else # define sqlite3FileSuffix3(X,Y) #endif -SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z,int); +SQLITE_PRIVATE u8 sqlite3GetBoolean(const char *z,u8); SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value*, u8); SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value*, u8); -SQLITE_PRIVATE void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, +SQLITE_PRIVATE void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8, void(*)(void*)); SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value*); SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value*); @@ -12614,11 +16766,12 @@ SQLITE_PRIVATE int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value SQLITE_PRIVATE void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8); #ifndef SQLITE_AMALGAMATION SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[]; +SQLITE_PRIVATE const char sqlite3StrBINARY[]; SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[]; SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[]; SQLITE_PRIVATE const Token sqlite3IntTokens[]; SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config; -SQLITE_PRIVATE SQLITE_WSD FuncDefHash sqlite3GlobalFunctions; +SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions; #ifndef SQLITE_OMIT_WSD SQLITE_PRIVATE int sqlite3PendingByte; #endif @@ -12630,10 +16783,12 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*); SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *, int *); SQLITE_PRIVATE void sqlite3NestedParse(Parse*, const char*, ...); SQLITE_PRIVATE void sqlite3ExpirePreparedStatements(sqlite3*); -SQLITE_PRIVATE int sqlite3CodeSubselect(Parse *, Expr *, int, int); +SQLITE_PRIVATE int sqlite3CodeSubselect(Parse*, Expr *, int, int); SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*); +SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p); SQLITE_PRIVATE int sqlite3MatchSpanName(const char*, const char*, const char*, const char*); SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*); +SQLITE_PRIVATE int sqlite3ResolveExprListNames(NameContext*, ExprList*); SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*); SQLITE_PRIVATE void sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*); @@ -12651,7 +16806,6 @@ SQLITE_PRIVATE void sqlite3DeleteIndexSamples(sqlite3*,Index*); SQLITE_PRIVATE void sqlite3DefaultRowEst(Index*); SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3*, int); SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*); -SQLITE_PRIVATE void sqlite3MinimumFileFormat(Parse*, int, int); SQLITE_PRIVATE void sqlite3SchemaClear(void *); SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *); SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *); @@ -12662,18 +16816,20 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse*, Index*); #ifdef SQLITE_DEBUG SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo*); #endif -SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *, +SQLITE_PRIVATE int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *, void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*), FuncDestructor *pDestructor ); +SQLITE_PRIVATE void sqlite3OomFault(sqlite3*); +SQLITE_PRIVATE void sqlite3OomClear(sqlite3*); SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int); SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *); -SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, char*, int, int); +SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int); SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int); SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum*,const char*); -SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum*,int); +SQLITE_PRIVATE void sqlite3AppendChar(StrAccum*,int,char); SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*); SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*); SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int); @@ -12682,17 +16838,29 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int); SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *); SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *); +#ifndef SQLITE_OMIT_SUBQUERY +SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse*, Expr*); +#else +# define sqlite3ExprCheckIN(x,y) SQLITE_OK +#endif + #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void); -SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue(Parse*,Index*,UnpackedRecord**,Expr*,u8,int,int*); +SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue( + Parse*,Index*,UnpackedRecord**,Expr*,int,int,int*); +SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr(Parse*, Expr*, u8, sqlite3_value**); SQLITE_PRIVATE void sqlite3Stat4ProbeFree(UnpackedRecord*); +SQLITE_PRIVATE int sqlite3Stat4Column(sqlite3*, const void*, int, int, sqlite3_value**); +SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3*, Index*, int); #endif /* ** The interface to the LEMON-generated parser */ -SQLITE_PRIVATE void *sqlite3ParserAlloc(void*(*)(size_t)); -SQLITE_PRIVATE void sqlite3ParserFree(void*, void(*)(void*)); +#ifndef SQLITE_AMALGAMATION +SQLITE_PRIVATE void *sqlite3ParserAlloc(void*(*)(u64)); +SQLITE_PRIVATE void sqlite3ParserFree(void*, void(*)(void*)); +#endif SQLITE_PRIVATE void sqlite3Parser(void*, int, Token, Parse*); #ifdef YYTRACKMAXSTACKDEPTH SQLITE_PRIVATE int sqlite3ParserStackPeak(void*); @@ -12721,7 +16889,7 @@ SQLITE_PRIVATE int sqlite3Utf8To8(unsigned char*); # define sqlite3VtabRollback(X) # define sqlite3VtabCommit(X) # define sqlite3VtabInSync(db) 0 -# define sqlite3VtabLock(X) +# define sqlite3VtabLock(X) # define sqlite3VtabUnlock(X) # define sqlite3VtabUnlockList(X) # define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK @@ -12738,8 +16906,17 @@ SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3*); SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *, int, int); SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*); SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*); +SQLITE_PRIVATE Module *sqlite3VtabCreateModule( + sqlite3*, + const char*, + const sqlite3_module*, + void*, + void(*)(void*) + ); # define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0) #endif +SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse*,Module*); +SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3*,Module*); SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*); SQLITE_PRIVATE void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*, int); SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse*, Token*); @@ -12777,7 +16954,7 @@ SQLITE_PRIVATE void sqlite3WithPush(Parse*, With*, u8); ** no-op macros if OMIT_FOREIGN_KEY is defined. In this case no foreign ** key functionality is available. If OMIT_TRIGGER is defined but ** OMIT_FOREIGN_KEY is not, only some of the functions are no-oped. In -** this case foreign keys are parsed, but no other functionality is +** this case foreign keys are parsed, but no other functionality is ** provided (enforcement of FK constraints requires the triggers sub-system). */ #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) @@ -12793,6 +16970,7 @@ SQLITE_PRIVATE FKey *sqlite3FkReferences(Table *); #define sqlite3FkDropTable(a,b,c) #define sqlite3FkOldmask(a,b) 0 #define sqlite3FkRequired(a,b,c,d) 0 + #define sqlite3FkReferences(a) 0 #endif #ifndef SQLITE_OMIT_FOREIGN_KEY SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *, Table*); @@ -12811,10 +16989,10 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex(Parse*,Table*,FKey*,Index**,int**); /* ** The interface to the code in fault.c used for identifying "benign" -** malloc failures. This is only present if SQLITE_OMIT_BUILTIN_TEST +** malloc failures. This is only present if SQLITE_UNTESTABLE ** is not defined. */ -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE SQLITE_PRIVATE void sqlite3BeginBenignMalloc(void); SQLITE_PRIVATE void sqlite3EndBenignMalloc(void); #else @@ -12822,32 +17000,36 @@ SQLITE_PRIVATE void sqlite3EndBenignMalloc(void); #define sqlite3EndBenignMalloc() #endif -#define IN_INDEX_ROWID 1 -#define IN_INDEX_EPH 2 -#define IN_INDEX_INDEX_ASC 3 -#define IN_INDEX_INDEX_DESC 4 -SQLITE_PRIVATE int sqlite3FindInIndex(Parse *, Expr *, int*); +/* +** Allowed return values from sqlite3FindInIndex() +*/ +#define IN_INDEX_ROWID 1 /* Search the rowid of the table */ +#define IN_INDEX_EPH 2 /* Search an ephemeral b-tree */ +#define IN_INDEX_INDEX_ASC 3 /* Existing index ASCENDING */ +#define IN_INDEX_INDEX_DESC 4 /* Existing index DESCENDING */ +#define IN_INDEX_NOOP 5 /* No table available. Use comparisons */ +/* +** Allowed flags for the 3rd parameter to sqlite3FindInIndex(). +*/ +#define IN_INDEX_NOOP_OK 0x0001 /* OK to return IN_INDEX_NOOP */ +#define IN_INDEX_MEMBERSHIP 0x0002 /* IN operator used for membership test */ +#define IN_INDEX_LOOP 0x0004 /* IN operator used as a loop */ +SQLITE_PRIVATE int sqlite3FindInIndex(Parse *, Expr *, u32, int*, int*); +SQLITE_PRIVATE int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int); +SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *); #ifdef SQLITE_ENABLE_ATOMIC_WRITE -SQLITE_PRIVATE int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int); -SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *); SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *); -SQLITE_PRIVATE int sqlite3JournalExists(sqlite3_file *p); -#else - #define sqlite3JournalSize(pVfs) ((pVfs)->szOsFile) - #define sqlite3JournalExists(p) 1 #endif +SQLITE_PRIVATE int sqlite3JournalIsInMemory(sqlite3_file *p); SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *); -SQLITE_PRIVATE int sqlite3MemJournalSize(void); -SQLITE_PRIVATE int sqlite3IsMemJournal(sqlite3_file *); +SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p); #if SQLITE_MAX_EXPR_DEPTH>0 -SQLITE_PRIVATE void sqlite3ExprSetHeight(Parse *pParse, Expr *p); SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *); SQLITE_PRIVATE int sqlite3ExprCheckHeight(Parse*, int); #else - #define sqlite3ExprSetHeight(x,y) #define sqlite3SelectExprHeight(x) 0 #define sqlite3ExprCheckHeight(x,y) #endif @@ -12872,12 +17054,12 @@ SQLITE_PRIVATE void sqlite3ParserTrace(FILE*, char *); /* ** If the SQLITE_ENABLE IOTRACE exists then the global variable ** sqlite3IoTrace is a pointer to a printf-like routine used to -** print I/O tracing messages. +** print I/O tracing messages. */ #ifdef SQLITE_ENABLE_IOTRACE # define IOTRACE(A) if( sqlite3IoTrace ){ sqlite3IoTrace A; } SQLITE_PRIVATE void sqlite3VdbeIOTraceSql(Vdbe*); -SQLITE_PRIVATE void (*sqlite3IoTrace)(const char*,...); +SQLITE_API SQLITE_EXTERN void (SQLITE_CDECL *sqlite3IoTrace)(const char*,...); #else # define IOTRACE(A) # define sqlite3VdbeIOTraceSql(X) @@ -12906,7 +17088,7 @@ SQLITE_PRIVATE void (*sqlite3IoTrace)(const char*,...); ** that allocations that might have been satisfied by lookaside are not ** passed back to non-lookaside free() routines. Asserts such as the ** example above are placed on the non-lookaside free() routines to verify -** this constraint. +** this constraint. ** ** All of this is no-op for a production build. It only comes into ** play when the SQLITE_MEMDEBUG compile-time option is used. @@ -12921,12 +17103,29 @@ SQLITE_PRIVATE int sqlite3MemdebugNoType(void*,u8); # define sqlite3MemdebugNoType(X,Y) 1 #endif #define MEMTYPE_HEAP 0x01 /* General heap allocations */ -#define MEMTYPE_LOOKASIDE 0x02 /* Might have been lookaside memory */ +#define MEMTYPE_LOOKASIDE 0x02 /* Heap that might have been lookaside */ #define MEMTYPE_SCRATCH 0x04 /* Scratch allocations */ #define MEMTYPE_PCACHE 0x08 /* Page cache allocations */ -#define MEMTYPE_DB 0x10 /* Uses sqlite3DbMalloc, not sqlite_malloc */ -#endif /* _SQLITEINT_H_ */ +/* +** Threading interface +*/ +#if SQLITE_MAX_WORKER_THREADS>0 +SQLITE_PRIVATE int sqlite3ThreadCreate(SQLiteThread**,void*(*)(void*),void*); +SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread*, void**); +#endif + +#if defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST) +SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3*); +#endif + +SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr); +SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr); +SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr*, int); +SQLITE_PRIVATE Expr *sqlite3ExprForVectorField(Parse*,Expr*,int); +SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse*, Expr*); + +#endif /* SQLITEINT_H */ /************** End of sqliteInt.h *******************************************/ /************** Begin file global.c ******************************************/ @@ -12942,8 +17141,9 @@ SQLITE_PRIVATE int sqlite3MemdebugNoType(void*,u8); ** ************************************************************************* ** -** This file contains definitions of global variables and contants. +** This file contains definitions of global variables and constants. */ +/* #include "sqliteInt.h" */ /* An array to map all upper-case characters into their corresponding ** lower-case character. @@ -12977,16 +17177,16 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 3x */ 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, /* 4x */ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, /* 5x */ - 96, 97, 66, 67, 68, 69, 70, 71, 72, 73,106,107,108,109,110,111, /* 6x */ - 112, 81, 82, 83, 84, 85, 86, 87, 88, 89,122,123,124,125,126,127, /* 7x */ + 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111, /* 6x */ + 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, /* 7x */ 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, /* 8x */ - 144,145,146,147,148,149,150,151,152,153,154,155,156,157,156,159, /* 9x */ + 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, /* 9x */ 160,161,162,163,164,165,166,167,168,169,170,171,140,141,142,175, /* Ax */ 176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, /* Bx */ 192,129,130,131,132,133,134,135,136,137,202,203,204,205,206,207, /* Cx */ 208,145,146,147,148,149,150,151,152,153,218,219,220,221,222,223, /* Dx */ - 224,225,162,163,164,165,166,167,168,169,232,203,204,205,206,207, /* Ex */ - 239,240,241,242,243,244,245,246,247,248,249,219,220,221,222,255, /* Fx */ + 224,225,162,163,164,165,166,167,168,169,234,235,236,237,238,239, /* Ex */ + 240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255, /* Fx */ #endif }; @@ -13001,6 +17201,7 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { ** isxdigit() 0x08 ** toupper() 0x20 ** SQLite identifier character 0x40 +** Quote character 0x80 ** ** Bit 0x20 is set if the mapped character requires translation to upper ** case. i.e. if the character is a lower-case ASCII character. @@ -13009,16 +17210,13 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = { ** ** (x & ~(map[x]&0x20)) ** -** Standard function tolower() is implemented using the sqlite3UpperToLower[] +** The equivalent of tolower() is implemented using the sqlite3UpperToLower[] ** array. tolower() is used more often than toupper() by SQLite. ** -** Bit 0x40 is set if the character non-alphanumeric and can be used in an +** Bit 0x40 is set if the character is non-alphanumeric and can be used in an ** SQLite identifier. Identifiers are alphanumerics, "_", "$", and any ** non-ASCII UTF character. Hence the test for whether or not a character is ** part of an identifier is 0x46. -** -** SQLite's versions are identical to the standard versions assuming a -** locale of "C". They are implemented as macros in sqliteInt.h. */ #ifdef SQLITE_ASCII SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { @@ -13026,7 +17224,7 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, /* 08..0f ........ */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10..17 ........ */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 18..1f ........ */ - 0x01, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, /* 20..27 !"#$%&' */ + 0x01, 0x00, 0x80, 0x00, 0x40, 0x00, 0x00, 0x80, /* 20..27 !"#$%&' */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 28..2f ()*+,-./ */ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, /* 30..37 01234567 */ 0x0c, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 38..3f 89:;<=>? */ @@ -13034,8 +17232,8 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x02, /* 40..47 @ABCDEFG */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 48..4f HIJKLMNO */ 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 50..57 PQRSTUVW */ - 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x40, /* 58..5f XYZ[\]^_ */ - 0x00, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x22, /* 60..67 `abcdefg */ + 0x02, 0x02, 0x02, 0x80, 0x00, 0x00, 0x00, 0x40, /* 58..5f XYZ[\]^_ */ + 0x80, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x22, /* 60..67 `abcdefg */ 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 68..6f hijklmno */ 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 70..77 pqrstuvw */ 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, /* 78..7f xyz{|}~. */ @@ -13060,14 +17258,61 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = { }; #endif +/* EVIDENCE-OF: R-02982-34736 In order to maintain full backwards +** compatibility for legacy applications, the URI filename capability is +** disabled by default. +** +** EVIDENCE-OF: R-38799-08373 URI filenames can be enabled or disabled +** using the SQLITE_USE_URI=1 or SQLITE_USE_URI=0 compile-time options. +** +** EVIDENCE-OF: R-43642-56306 By default, URI handling is globally +** disabled. The default value may be changed by compiling with the +** SQLITE_USE_URI symbol defined. +*/ #ifndef SQLITE_USE_URI # define SQLITE_USE_URI 0 #endif +/* EVIDENCE-OF: R-38720-18127 The default setting is determined by the +** SQLITE_ALLOW_COVERING_INDEX_SCAN compile-time option, or is "on" if +** that compile-time option is omitted. +*/ #ifndef SQLITE_ALLOW_COVERING_INDEX_SCAN # define SQLITE_ALLOW_COVERING_INDEX_SCAN 1 #endif +/* The minimum PMA size is set to this value multiplied by the database +** page size in bytes. +*/ +#ifndef SQLITE_SORTER_PMASZ +# define SQLITE_SORTER_PMASZ 250 +#endif + +/* Statement journals spill to disk when their size exceeds the following +** threshold (in bytes). 0 means that statement journals are created and +** written to disk immediately (the default behavior for SQLite versions +** before 3.12.0). -1 means always keep the entire statement journal in +** memory. (The statement journal is also always held entirely in memory +** if journal_mode=MEMORY or if temp_store=MEMORY, regardless of this +** setting.) +*/ +#ifndef SQLITE_STMTJRNL_SPILL +# define SQLITE_STMTJRNL_SPILL (64*1024) +#endif + +/* +** The default lookaside-configuration, the format "SZ,N". SZ is the +** number of bytes in each lookaside slot (should be a multiple of 8) +** and N is the number of slots. The lookaside-configuration can be +** changed as start-time using sqlite3_config(SQLITE_CONFIG_LOOKASIDE) +** or at run-time for an individual database connection using +** sqlite3_db_config(db, SQLITE_DBCONFIG_LOOKASIDE); +*/ +#ifndef SQLITE_DEFAULT_LOOKASIDE +# define SQLITE_DEFAULT_LOOKASIDE 1200,100 +#endif + + /* ** The following singleton contains the global configuration for ** the SQLite library. @@ -13080,8 +17325,8 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { SQLITE_ALLOW_COVERING_INDEX_SCAN, /* bUseCis */ 0x7ffffffe, /* mxStrlen */ 0, /* neverCorrupt */ - 128, /* szLookaside */ - 500, /* nLookaside */ + SQLITE_DEFAULT_LOOKASIDE, /* szLookaside, nLookaside */ + SQLITE_STMTJRNL_SPILL, /* nStmtSpill */ {0,0,0,0,0,0,0,0}, /* m */ {0,0,0,0,0,0,0,0,0}, /* mutex */ {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */ @@ -13095,24 +17340,33 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { 0, /* nScratch */ (void*)0, /* pPage */ 0, /* szPage */ - 0, /* nPage */ + SQLITE_DEFAULT_PCACHE_INITSZ, /* nPage */ 0, /* mxParserStack */ 0, /* sharedCacheEnabled */ + SQLITE_SORTER_PMASZ, /* szPma */ /* All the rest should always be initialized to zero */ 0, /* isInit */ 0, /* inProgress */ 0, /* isMutexInit */ 0, /* isMallocInit */ 0, /* isPCacheInit */ - 0, /* pInitMutex */ 0, /* nRefInitMutex */ + 0, /* pInitMutex */ 0, /* xLog */ 0, /* pLogArg */ - 0, /* bLocaltimeFault */ #ifdef SQLITE_ENABLE_SQLLOG 0, /* xSqllog */ - 0 /* pSqllogArg */ + 0, /* pSqllogArg */ #endif +#ifdef SQLITE_VDBE_COVERAGE + 0, /* xVdbeBranch */ + 0, /* pVbeBranchArg */ +#endif +#ifndef SQLITE_UNTESTABLE + 0, /* xTestCallback */ +#endif + 0, /* bLocaltimeFault */ + 0x7ffffffe /* iOnceResetThreshold */ }; /* @@ -13120,7 +17374,7 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = { ** database connections. After initialization, this table is ** read-only. */ -SQLITE_PRIVATE SQLITE_WSD FuncDefHash sqlite3GlobalFunctions; +SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions; /* ** Constant tokens for values 0 and 1. @@ -13135,7 +17389,7 @@ SQLITE_PRIVATE const Token sqlite3IntTokens[] = { ** The value of the "pending" byte must be 0x40000000 (1 byte past the ** 1-gibabyte boundary) in a compatible database. SQLite never uses ** the database page that contains the pending byte. It never attempts -** to read or write that page. The pending byte page is set assign +** to read or write that page. The pending byte page is set aside ** for use by the VFS layers as space for managing file locks. ** ** During testing, it is often desirable to move the pending byte to @@ -13146,13 +17400,14 @@ SQLITE_PRIVATE const Token sqlite3IntTokens[] = { ** ** IMPORTANT: Changing the pending byte to any value other than ** 0x40000000 results in an incompatible database file format! -** Changing the pending byte during operating results in undefined -** and dileterious behavior. +** Changing the pending byte during operation will result in undefined +** and incorrect behavior. */ #ifndef SQLITE_OMIT_WSD SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000; #endif +/* #include "opcodes.h" */ /* ** Properties of opcodes. The OPFLG_INITIALIZER macro is ** created by mkopcodeh.awk during compilation. Data is obtained @@ -13161,6 +17416,11 @@ SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000; */ SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; +/* +** Name of the default collating sequence +*/ +SQLITE_PRIVATE const char sqlite3StrBINARY[] = "BINARY"; + /************** End of global.c **********************************************/ /************** Begin file ctime.c *******************************************/ /* @@ -13181,6 +17441,7 @@ SQLITE_PRIVATE const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS +/* #include "sqliteInt.h" */ /* ** An array of names of all compile-time options. This array should @@ -13197,88 +17458,115 @@ static const char * const azCompileOpt[] = { #define CTIMEOPT_VAL_(opt) #opt #define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt) -#ifdef SQLITE_32BIT_ROWID +#if SQLITE_32BIT_ROWID "32BIT_ROWID", #endif -#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC +#if SQLITE_4_BYTE_ALIGNED_MALLOC "4_BYTE_ALIGNED_MALLOC", #endif -#ifdef SQLITE_CASE_SENSITIVE_LIKE +#if SQLITE_CASE_SENSITIVE_LIKE "CASE_SENSITIVE_LIKE", #endif -#ifdef SQLITE_CHECK_PAGES +#if SQLITE_CHECK_PAGES "CHECK_PAGES", #endif -#ifdef SQLITE_COVERAGE_TEST +#if defined(__clang__) && defined(__clang_major__) + "COMPILER=clang-" CTIMEOPT_VAL(__clang_major__) "." + CTIMEOPT_VAL(__clang_minor__) "." + CTIMEOPT_VAL(__clang_patchlevel__), +#elif defined(_MSC_VER) + "COMPILER=msvc-" CTIMEOPT_VAL(_MSC_VER), +#elif defined(__GNUC__) && defined(__VERSION__) + "COMPILER=gcc-" __VERSION__, +#endif +#if SQLITE_COVERAGE_TEST "COVERAGE_TEST", #endif -#ifdef SQLITE_DEBUG +#if SQLITE_DEBUG "DEBUG", #endif -#ifdef SQLITE_DEFAULT_LOCKING_MODE +#if SQLITE_DEFAULT_LOCKING_MODE "DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE), #endif #if defined(SQLITE_DEFAULT_MMAP_SIZE) && !defined(SQLITE_DEFAULT_MMAP_SIZE_xc) "DEFAULT_MMAP_SIZE=" CTIMEOPT_VAL(SQLITE_DEFAULT_MMAP_SIZE), #endif -#ifdef SQLITE_DISABLE_DIRSYNC +#if SQLITE_DIRECT_OVERFLOW_READ + "DIRECT_OVERFLOW_READ", +#endif +#if SQLITE_DISABLE_DIRSYNC "DISABLE_DIRSYNC", #endif -#ifdef SQLITE_DISABLE_LFS +#if SQLITE_DISABLE_LFS "DISABLE_LFS", #endif -#ifdef SQLITE_ENABLE_ATOMIC_WRITE +#if SQLITE_ENABLE_8_3_NAMES + "ENABLE_8_3_NAMES=" CTIMEOPT_VAL(SQLITE_ENABLE_8_3_NAMES), +#endif +#if SQLITE_ENABLE_API_ARMOR + "ENABLE_API_ARMOR", +#endif +#if SQLITE_ENABLE_ATOMIC_WRITE "ENABLE_ATOMIC_WRITE", #endif -#ifdef SQLITE_ENABLE_CEROD +#if SQLITE_ENABLE_CEROD "ENABLE_CEROD", #endif -#ifdef SQLITE_ENABLE_COLUMN_METADATA +#if SQLITE_ENABLE_COLUMN_METADATA "ENABLE_COLUMN_METADATA", #endif -#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT +#if SQLITE_ENABLE_DBSTAT_VTAB + "ENABLE_DBSTAT_VTAB", +#endif +#if SQLITE_ENABLE_EXPENSIVE_ASSERT "ENABLE_EXPENSIVE_ASSERT", #endif -#ifdef SQLITE_ENABLE_FTS1 +#if SQLITE_ENABLE_FTS1 "ENABLE_FTS1", #endif -#ifdef SQLITE_ENABLE_FTS2 +#if SQLITE_ENABLE_FTS2 "ENABLE_FTS2", #endif -#ifdef SQLITE_ENABLE_FTS3 +#if SQLITE_ENABLE_FTS3 "ENABLE_FTS3", #endif -#ifdef SQLITE_ENABLE_FTS3_PARENTHESIS +#if SQLITE_ENABLE_FTS3_PARENTHESIS "ENABLE_FTS3_PARENTHESIS", #endif -#ifdef SQLITE_ENABLE_FTS4 +#if SQLITE_ENABLE_FTS4 "ENABLE_FTS4", #endif -#ifdef SQLITE_ENABLE_ICU +#if SQLITE_ENABLE_FTS5 + "ENABLE_FTS5", +#endif +#if SQLITE_ENABLE_ICU "ENABLE_ICU", #endif -#ifdef SQLITE_ENABLE_IOTRACE +#if SQLITE_ENABLE_IOTRACE "ENABLE_IOTRACE", #endif -#ifdef SQLITE_ENABLE_LOAD_EXTENSION +#if SQLITE_ENABLE_JSON1 + "ENABLE_JSON1", +#endif +#if SQLITE_ENABLE_LOAD_EXTENSION "ENABLE_LOAD_EXTENSION", #endif -#ifdef SQLITE_ENABLE_LOCKING_STYLE +#if SQLITE_ENABLE_LOCKING_STYLE "ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE), #endif -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT +#if SQLITE_ENABLE_MEMORY_MANAGEMENT "ENABLE_MEMORY_MANAGEMENT", #endif -#ifdef SQLITE_ENABLE_MEMSYS3 +#if SQLITE_ENABLE_MEMSYS3 "ENABLE_MEMSYS3", #endif -#ifdef SQLITE_ENABLE_MEMSYS5 +#if SQLITE_ENABLE_MEMSYS5 "ENABLE_MEMSYS5", #endif -#ifdef SQLITE_ENABLE_OVERSIZE_CELL_CHECK +#if SQLITE_ENABLE_OVERSIZE_CELL_CHECK "ENABLE_OVERSIZE_CELL_CHECK", #endif -#ifdef SQLITE_ENABLE_RTREE +#if SQLITE_ENABLE_RTREE "ENABLE_RTREE", #endif #if defined(SQLITE_ENABLE_STAT4) @@ -13286,31 +17574,37 @@ static const char * const azCompileOpt[] = { #elif defined(SQLITE_ENABLE_STAT3) "ENABLE_STAT3", #endif -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY +#if SQLITE_ENABLE_UNLOCK_NOTIFY "ENABLE_UNLOCK_NOTIFY", #endif -#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT +#if SQLITE_ENABLE_UPDATE_DELETE_LIMIT "ENABLE_UPDATE_DELETE_LIMIT", #endif -#ifdef SQLITE_HAS_CODEC +#if defined(SQLITE_ENABLE_URI_00_ERROR) + "ENABLE_URI_00_ERROR", +#endif +#if SQLITE_HAS_CODEC "HAS_CODEC", #endif -#ifdef SQLITE_HAVE_ISNAN +#if HAVE_ISNAN || SQLITE_HAVE_ISNAN "HAVE_ISNAN", #endif -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX +#if SQLITE_HOMEGROWN_RECURSIVE_MUTEX "HOMEGROWN_RECURSIVE_MUTEX", #endif -#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS +#if SQLITE_IGNORE_AFP_LOCK_ERRORS "IGNORE_AFP_LOCK_ERRORS", #endif -#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS +#if SQLITE_IGNORE_FLOCK_LOCK_ERRORS "IGNORE_FLOCK_LOCK_ERRORS", #endif #ifdef SQLITE_INT64_TYPE "INT64_TYPE", #endif -#ifdef SQLITE_LOCK_TRACE +#ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS + "LIKE_DOESNT_MATCH_BLOBS", +#endif +#if SQLITE_LOCK_TRACE "LOCK_TRACE", #endif #if defined(SQLITE_MAX_MMAP_SIZE) && !defined(SQLITE_MAX_MMAP_SIZE_xc) @@ -13319,220 +17613,226 @@ static const char * const azCompileOpt[] = { #ifdef SQLITE_MAX_SCHEMA_RETRY "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY), #endif -#ifdef SQLITE_MEMDEBUG +#if SQLITE_MEMDEBUG "MEMDEBUG", #endif -#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT +#if SQLITE_MIXED_ENDIAN_64BIT_FLOAT "MIXED_ENDIAN_64BIT_FLOAT", #endif -#ifdef SQLITE_NO_SYNC +#if SQLITE_NO_SYNC "NO_SYNC", #endif -#ifdef SQLITE_OMIT_ALTERTABLE +#if SQLITE_OMIT_ALTERTABLE "OMIT_ALTERTABLE", #endif -#ifdef SQLITE_OMIT_ANALYZE +#if SQLITE_OMIT_ANALYZE "OMIT_ANALYZE", #endif -#ifdef SQLITE_OMIT_ATTACH +#if SQLITE_OMIT_ATTACH "OMIT_ATTACH", #endif -#ifdef SQLITE_OMIT_AUTHORIZATION +#if SQLITE_OMIT_AUTHORIZATION "OMIT_AUTHORIZATION", #endif -#ifdef SQLITE_OMIT_AUTOINCREMENT +#if SQLITE_OMIT_AUTOINCREMENT "OMIT_AUTOINCREMENT", #endif -#ifdef SQLITE_OMIT_AUTOINIT +#if SQLITE_OMIT_AUTOINIT "OMIT_AUTOINIT", #endif -#ifdef SQLITE_OMIT_AUTOMATIC_INDEX +#if SQLITE_OMIT_AUTOMATIC_INDEX "OMIT_AUTOMATIC_INDEX", #endif -#ifdef SQLITE_OMIT_AUTORESET +#if SQLITE_OMIT_AUTORESET "OMIT_AUTORESET", #endif -#ifdef SQLITE_OMIT_AUTOVACUUM +#if SQLITE_OMIT_AUTOVACUUM "OMIT_AUTOVACUUM", #endif -#ifdef SQLITE_OMIT_BETWEEN_OPTIMIZATION +#if SQLITE_OMIT_BETWEEN_OPTIMIZATION "OMIT_BETWEEN_OPTIMIZATION", #endif -#ifdef SQLITE_OMIT_BLOB_LITERAL +#if SQLITE_OMIT_BLOB_LITERAL "OMIT_BLOB_LITERAL", #endif -#ifdef SQLITE_OMIT_BTREECOUNT +#if SQLITE_OMIT_BTREECOUNT "OMIT_BTREECOUNT", #endif -#ifdef SQLITE_OMIT_BUILTIN_TEST - "OMIT_BUILTIN_TEST", -#endif -#ifdef SQLITE_OMIT_CAST +#if SQLITE_OMIT_CAST "OMIT_CAST", #endif -#ifdef SQLITE_OMIT_CHECK +#if SQLITE_OMIT_CHECK "OMIT_CHECK", #endif -#ifdef SQLITE_OMIT_COMPLETE +#if SQLITE_OMIT_COMPLETE "OMIT_COMPLETE", #endif -#ifdef SQLITE_OMIT_COMPOUND_SELECT +#if SQLITE_OMIT_COMPOUND_SELECT "OMIT_COMPOUND_SELECT", #endif -#ifdef SQLITE_OMIT_DATETIME_FUNCS +#if SQLITE_OMIT_CTE + "OMIT_CTE", +#endif +#if SQLITE_OMIT_DATETIME_FUNCS "OMIT_DATETIME_FUNCS", #endif -#ifdef SQLITE_OMIT_DECLTYPE +#if SQLITE_OMIT_DECLTYPE "OMIT_DECLTYPE", #endif -#ifdef SQLITE_OMIT_DEPRECATED +#if SQLITE_OMIT_DEPRECATED "OMIT_DEPRECATED", #endif -#ifdef SQLITE_OMIT_DISKIO +#if SQLITE_OMIT_DISKIO "OMIT_DISKIO", #endif -#ifdef SQLITE_OMIT_EXPLAIN +#if SQLITE_OMIT_EXPLAIN "OMIT_EXPLAIN", #endif -#ifdef SQLITE_OMIT_FLAG_PRAGMAS +#if SQLITE_OMIT_FLAG_PRAGMAS "OMIT_FLAG_PRAGMAS", #endif -#ifdef SQLITE_OMIT_FLOATING_POINT +#if SQLITE_OMIT_FLOATING_POINT "OMIT_FLOATING_POINT", #endif -#ifdef SQLITE_OMIT_FOREIGN_KEY +#if SQLITE_OMIT_FOREIGN_KEY "OMIT_FOREIGN_KEY", #endif -#ifdef SQLITE_OMIT_GET_TABLE +#if SQLITE_OMIT_GET_TABLE "OMIT_GET_TABLE", #endif -#ifdef SQLITE_OMIT_INCRBLOB +#if SQLITE_OMIT_INCRBLOB "OMIT_INCRBLOB", #endif -#ifdef SQLITE_OMIT_INTEGRITY_CHECK +#if SQLITE_OMIT_INTEGRITY_CHECK "OMIT_INTEGRITY_CHECK", #endif -#ifdef SQLITE_OMIT_LIKE_OPTIMIZATION +#if SQLITE_OMIT_LIKE_OPTIMIZATION "OMIT_LIKE_OPTIMIZATION", #endif -#ifdef SQLITE_OMIT_LOAD_EXTENSION +#if SQLITE_OMIT_LOAD_EXTENSION "OMIT_LOAD_EXTENSION", #endif -#ifdef SQLITE_OMIT_LOCALTIME +#if SQLITE_OMIT_LOCALTIME "OMIT_LOCALTIME", #endif -#ifdef SQLITE_OMIT_LOOKASIDE +#if SQLITE_OMIT_LOOKASIDE "OMIT_LOOKASIDE", #endif -#ifdef SQLITE_OMIT_MEMORYDB +#if SQLITE_OMIT_MEMORYDB "OMIT_MEMORYDB", #endif -#ifdef SQLITE_OMIT_OR_OPTIMIZATION +#if SQLITE_OMIT_OR_OPTIMIZATION "OMIT_OR_OPTIMIZATION", #endif -#ifdef SQLITE_OMIT_PAGER_PRAGMAS +#if SQLITE_OMIT_PAGER_PRAGMAS "OMIT_PAGER_PRAGMAS", #endif -#ifdef SQLITE_OMIT_PRAGMA +#if SQLITE_OMIT_PRAGMA "OMIT_PRAGMA", #endif -#ifdef SQLITE_OMIT_PROGRESS_CALLBACK +#if SQLITE_OMIT_PROGRESS_CALLBACK "OMIT_PROGRESS_CALLBACK", #endif -#ifdef SQLITE_OMIT_QUICKBALANCE +#if SQLITE_OMIT_QUICKBALANCE "OMIT_QUICKBALANCE", #endif -#ifdef SQLITE_OMIT_REINDEX +#if SQLITE_OMIT_REINDEX "OMIT_REINDEX", #endif -#ifdef SQLITE_OMIT_SCHEMA_PRAGMAS +#if SQLITE_OMIT_SCHEMA_PRAGMAS "OMIT_SCHEMA_PRAGMAS", #endif -#ifdef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS +#if SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS "OMIT_SCHEMA_VERSION_PRAGMAS", #endif -#ifdef SQLITE_OMIT_SHARED_CACHE +#if SQLITE_OMIT_SHARED_CACHE "OMIT_SHARED_CACHE", #endif -#ifdef SQLITE_OMIT_SUBQUERY +#if SQLITE_OMIT_SUBQUERY "OMIT_SUBQUERY", #endif -#ifdef SQLITE_OMIT_TCL_VARIABLE +#if SQLITE_OMIT_TCL_VARIABLE "OMIT_TCL_VARIABLE", #endif -#ifdef SQLITE_OMIT_TEMPDB +#if SQLITE_OMIT_TEMPDB "OMIT_TEMPDB", #endif -#ifdef SQLITE_OMIT_TRACE +#if SQLITE_OMIT_TRACE "OMIT_TRACE", #endif -#ifdef SQLITE_OMIT_TRIGGER +#if SQLITE_OMIT_TRIGGER "OMIT_TRIGGER", #endif -#ifdef SQLITE_OMIT_TRUNCATE_OPTIMIZATION +#if SQLITE_OMIT_TRUNCATE_OPTIMIZATION "OMIT_TRUNCATE_OPTIMIZATION", #endif -#ifdef SQLITE_OMIT_UTF16 +#if SQLITE_OMIT_UTF16 "OMIT_UTF16", #endif -#ifdef SQLITE_OMIT_VACUUM +#if SQLITE_OMIT_VACUUM "OMIT_VACUUM", #endif -#ifdef SQLITE_OMIT_VIEW +#if SQLITE_OMIT_VIEW "OMIT_VIEW", #endif -#ifdef SQLITE_OMIT_VIRTUALTABLE +#if SQLITE_OMIT_VIRTUALTABLE "OMIT_VIRTUALTABLE", #endif -#ifdef SQLITE_OMIT_WAL +#if SQLITE_OMIT_WAL "OMIT_WAL", #endif -#ifdef SQLITE_OMIT_WSD +#if SQLITE_OMIT_WSD "OMIT_WSD", #endif -#ifdef SQLITE_OMIT_XFER_OPT +#if SQLITE_OMIT_XFER_OPT "OMIT_XFER_OPT", #endif -#ifdef SQLITE_PERFORMANCE_TRACE +#if SQLITE_PERFORMANCE_TRACE "PERFORMANCE_TRACE", #endif -#ifdef SQLITE_PROXY_DEBUG +#if SQLITE_PROXY_DEBUG "PROXY_DEBUG", #endif -#ifdef SQLITE_RTREE_INT_ONLY +#if SQLITE_RTREE_INT_ONLY "RTREE_INT_ONLY", #endif -#ifdef SQLITE_SECURE_DELETE +#if SQLITE_SECURE_DELETE "SECURE_DELETE", #endif -#ifdef SQLITE_SMALL_STACK +#if SQLITE_SMALL_STACK "SMALL_STACK", #endif -#ifdef SQLITE_SOUNDEX +#if SQLITE_SOUNDEX "SOUNDEX", #endif -#ifdef SQLITE_SYSTEM_MALLOC +#if SQLITE_SYSTEM_MALLOC "SYSTEM_MALLOC", #endif -#ifdef SQLITE_TCL +#if SQLITE_TCL "TCL", #endif #if defined(SQLITE_TEMP_STORE) && !defined(SQLITE_TEMP_STORE_xc) "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE), #endif -#ifdef SQLITE_TEST +#if SQLITE_TEST "TEST", #endif #if defined(SQLITE_THREADSAFE) "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE), #endif -#ifdef SQLITE_USE_ALLOCA +#if SQLITE_UNTESTABLE + "UNTESTABLE" +#endif +#if SQLITE_USE_ALLOCA "USE_ALLOCA", #endif -#ifdef SQLITE_WIN32_MALLOC +#if SQLITE_USER_AUTHENTICATION + "USER_AUTHENTICATION", +#endif +#if SQLITE_WIN32_MALLOC "WIN32_MALLOC", #endif -#ifdef SQLITE_ZERO_MALLOC +#if SQLITE_ZERO_MALLOC "ZERO_MALLOC" #endif }; @@ -13546,6 +17846,13 @@ static const char * const azCompileOpt[] = { */ SQLITE_API int sqlite3_compileoption_used(const char *zOptName){ int i, n; + +#if SQLITE_ENABLE_API_ARMOR + if( zOptName==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif if( sqlite3StrNICmp(zOptName, "SQLITE_", 7)==0 ) zOptName += 7; n = sqlite3Strlen30(zOptName); @@ -13553,7 +17860,7 @@ SQLITE_API int sqlite3_compileoption_used(const char *zOptName){ ** linear search is adequate. No need for a binary search. */ for(i=0; iaDb[] (or -1) */ - u8 nullRow; /* True if pointing to a row with no data */ - u8 rowidIsValid; /* True if lastRowid is valid */ - u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ - Bool useRandomRowid:1;/* Generate new record numbers semi-randomly */ - Bool isTable:1; /* True if a table requiring integer keys */ - Bool isOrdered:1; /* True if the underlying table is BTREE_UNORDERED */ - Bool multiPseudo:1; /* Multi-register pseudo-cursor */ - sqlite3_vtab_cursor *pVtabCursor; /* The cursor for a virtual table */ - i64 seqCount; /* Sequence counter */ - i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */ - i64 lastRowid; /* Rowid being deleted by OP_Delete */ - VdbeSorter *pSorter; /* Sorter object for OP_SorterOpen cursors */ +/* Types of VDBE cursors */ +#define CURTYPE_BTREE 0 +#define CURTYPE_SORTER 1 +#define CURTYPE_VTAB 2 +#define CURTYPE_PSEUDO 3 - /* Cached information about the header for the data record that the - ** cursor is currently pointing to. Only valid if cacheStatus matches +/* +** A VdbeCursor is an superclass (a wrapper) for various cursor objects: +** +** * A b-tree cursor +** - In the main database or in an ephemeral database +** - On either an index or a table +** * A sorter +** * A virtual table +** * A one-row "pseudotable" stored in a single register +*/ +typedef struct VdbeCursor VdbeCursor; +struct VdbeCursor { + u8 eCurType; /* One of the CURTYPE_* values above */ + i8 iDb; /* Index of cursor database in db->aDb[] (or -1) */ + u8 nullRow; /* True if pointing to a row with no data */ + u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ + u8 isTable; /* True for rowid tables. False for indexes */ +#ifdef SQLITE_DEBUG + u8 seekOp; /* Most recent seek operation on this cursor */ + u8 wrFlag; /* The wrFlag argument to sqlite3BtreeCursor() */ +#endif + Bool isEphemeral:1; /* True for an ephemeral table */ + Bool useRandomRowid:1; /* Generate new record numbers semi-randomly */ + Bool isOrdered:1; /* True if the table is not BTREE_UNORDERED */ + Btree *pBtx; /* Separate file holding temporary table */ + i64 seqCount; /* Sequence counter */ + int *aAltMap; /* Mapping from table to index column numbers */ + + /* Cached OP_Column parse information is only valid if cacheStatus matches ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of - ** CACHE_STALE and so setting cacheStatus=CACHE_STALE guarantees that - ** the cache is out of date. - ** - ** aRow might point to (ephemeral) data for the current row, or it might - ** be NULL. - */ - u32 cacheStatus; /* Cache is valid if this matches Vdbe.cacheCtr */ - u32 payloadSize; /* Total number of bytes in the record */ - u32 szRow; /* Byte available in aRow */ - u32 iHdrOffset; /* Offset to next unparsed byte of the header */ - const u8 *aRow; /* Data for the current row, if all on one page */ - u32 aType[1]; /* Type values for all entries in the record */ + ** CACHE_STALE (0) and so setting cacheStatus=CACHE_STALE guarantees that + ** the cache is out of date. */ + u32 cacheStatus; /* Cache is valid if this matches Vdbe.cacheCtr */ + int seekResult; /* Result of previous sqlite3BtreeMoveto() or 0 + ** if there have been no prior seeks on the cursor. */ + /* NB: seekResult does not distinguish between "no seeks have ever occurred + ** on this cursor" and "the most recent seek was an exact match". */ + + /* When a new VdbeCursor is allocated, only the fields above are zeroed. + ** The fields that follow are uninitialized, and must be individually + ** initialized prior to first use. */ + VdbeCursor *pAltCursor; /* Associated index cursor from which to read */ + union { + BtCursor *pCursor; /* CURTYPE_BTREE. Btree cursor */ + sqlite3_vtab_cursor *pVCur; /* CURTYPE_VTAB. Vtab cursor */ + int pseudoTableReg; /* CURTYPE_PSEUDO. Reg holding content. */ + VdbeSorter *pSorter; /* CURTYPE_SORTER. Sorter object */ + } uc; + KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */ + u32 iHdrOffset; /* Offset to next unparsed byte of the header */ + Pgno pgnoRoot; /* Root page of the open btree cursor */ + i16 nField; /* Number of fields in the header */ + u16 nHdrParsed; /* Number of header fields parsed so far */ + i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */ + u32 *aOffset; /* Pointer to aType[nField] */ + const u8 *aRow; /* Data for the current row, if all on one page */ + u32 payloadSize; /* Total number of bytes in the record */ + u32 szRow; /* Byte available in aRow */ +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK + u64 maskUsed; /* Mask of columns used by this cursor */ +#endif + /* 2*nField extra array elements allocated for aType[], beyond the one ** static element declared in the structure. nField total array slots for ** aType[] and nField+1 array slots for aOffset[] */ + u32 aType[1]; /* Type values record decode. MUST BE LAST */ }; -typedef struct VdbeCursor VdbeCursor; + + +/* +** A value for VdbeCursor.cacheStatus that means the cache is always invalid. +*/ +#define CACHE_STALE 0 /* ** When a sub-program is executed (OP_Program), a structure of this type @@ -13724,56 +18064,61 @@ struct VdbeFrame { Vdbe *v; /* VM this frame belongs to */ VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */ Op *aOp; /* Program instructions for parent frame */ + i64 *anExec; /* Event counters from parent frame */ Mem *aMem; /* Array of memory cells for parent frame */ - u8 *aOnceFlag; /* Array of OP_Once flags for parent frame */ VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */ void *token; /* Copy of SubProgram.token */ i64 lastRowid; /* Last insert rowid (sqlite3.lastRowid) */ + AuxData *pAuxData; /* Linked list of auxdata allocations */ int nCursor; /* Number of entries in apCsr */ int pc; /* Program Counter in parent (calling) frame */ int nOp; /* Size of aOp array */ int nMem; /* Number of entries in aMem */ - int nOnceFlag; /* Number of entries in aOnceFlag */ int nChildMem; /* Number of memory cells for child frame */ int nChildCsr; /* Number of cursors for child frame */ - int nChange; /* Statement changes (Vdbe.nChanges) */ + int nChange; /* Statement changes (Vdbe.nChange) */ + int nDbChange; /* Value of db->nChange */ }; #define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))]) -/* -** A value for VdbeCursor.cacheValid that means the cache is always invalid. -*/ -#define CACHE_STALE 0 - /* ** Internally, the vdbe manipulates nearly all SQL values as Mem ** structures. Each Mem struct may cache multiple representations (string, ** integer etc.) of the same value. */ struct Mem { - sqlite3 *db; /* The associated database connection */ - char *z; /* String or BLOB value */ - double r; /* Real value */ - union { + union MemValue { + double r; /* Real value used when MEM_Real is set in flags */ i64 i; /* Integer value used when MEM_Int is set in flags */ int nZero; /* Used when bit MEM_Zero is set in flags */ FuncDef *pDef; /* Used only when flags==MEM_Agg */ RowSet *pRowSet; /* Used only when flags==MEM_RowSet */ VdbeFrame *pFrame; /* Used when flags==MEM_Frame */ } u; - int n; /* Number of characters in string value, excluding '\0' */ u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ - u8 type; /* One of SQLITE_NULL, SQLITE_TEXT, SQLITE_INTEGER, etc */ u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ + u8 eSubtype; /* Subtype for this value */ + int n; /* Number of characters in string value, excluding '\0' */ + char *z; /* String or BLOB value */ + /* ShallowCopy only needs to copy the information above */ + char *zMalloc; /* Space to hold MEM_Str or MEM_Blob if szMalloc>0 */ + int szMalloc; /* Size of the zMalloc allocation */ + u32 uTemp; /* Transient storage for serial_type in OP_MakeRecord */ + sqlite3 *db; /* The associated database connection */ + void (*xDel)(void*);/* Destructor for Mem.z - only valid if MEM_Dyn */ #ifdef SQLITE_DEBUG Mem *pScopyFrom; /* This Mem is a shallow copy of pScopyFrom */ void *pFiller; /* So that sizeof(Mem) is a multiple of 8 */ #endif - void (*xDel)(void *); /* If not null, call this function to delete Mem.z */ - char *zMalloc; /* Dynamic buffer allocated by sqlite3_malloc() */ }; +/* +** Size of struct Mem not including the Mem.zMalloc member or anything that +** follows. +*/ +#define MEMCELLSIZE offsetof(Mem,zMalloc) + /* One or more of the following flags are set to indicate the validOK ** representations of the value stored in the Mem struct. ** @@ -13791,11 +18136,12 @@ struct Mem { #define MEM_Int 0x0004 /* Value is an integer */ #define MEM_Real 0x0008 /* Value is a real number */ #define MEM_Blob 0x0010 /* Value is a BLOB */ +#define MEM_AffMask 0x001f /* Mask of affinity bits */ #define MEM_RowSet 0x0020 /* Value is a RowSet object */ #define MEM_Frame 0x0040 /* Value is a VdbeFrame object */ -#define MEM_Invalid 0x0080 /* Value is undefined */ +#define MEM_Undefined 0x0080 /* Value is undefined */ #define MEM_Cleared 0x0100 /* NULL set by OP_Null, not from data */ -#define MEM_TypeMask 0x01ff /* Mask of type bits */ +#define MEM_TypeMask 0x81ff /* Mask of type bits */ /* Whenever Mem contains a valid string or blob representation, one of @@ -13804,16 +18150,23 @@ struct Mem { ** string is \000 or \u0000 terminated */ #define MEM_Term 0x0200 /* String rep is nul terminated */ -#define MEM_Dyn 0x0400 /* Need to call sqliteFree() on Mem.z */ +#define MEM_Dyn 0x0400 /* Need to call Mem.xDel() on Mem.z */ #define MEM_Static 0x0800 /* Mem.z points to a static string */ #define MEM_Ephem 0x1000 /* Mem.z points to an ephemeral string */ #define MEM_Agg 0x2000 /* Mem.z points to an agg function context */ #define MEM_Zero 0x4000 /* Mem.i contains count of 0s appended to blob */ +#define MEM_Subtype 0x8000 /* Mem.eSubtype is valid */ #ifdef SQLITE_OMIT_INCRBLOB #undef MEM_Zero #define MEM_Zero 0x0000 #endif +/* Return TRUE if Mem X contains dynamically allocated content - anything +** that needs to be deallocated to avoid a leak. +*/ +#define VdbeMemDynamic(X) \ + (((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame))!=0) + /* ** Clear any existing type flags from a Mem and replace them with f */ @@ -13825,11 +18178,11 @@ struct Mem { ** is for use inside assert() statements only. */ #ifdef SQLITE_DEBUG -#define memIsValid(M) ((M)->flags & MEM_Invalid)==0 +#define memIsValid(M) ((M)->flags & MEM_Undefined)==0 #endif /* -** Each auxilliary data pointer stored by a user defined function +** Each auxiliary data pointer stored by a user defined function ** implementation calling sqlite3_set_auxdata() is stored in an instance ** of this structure. All such structures associated with a single VM ** are stored in a linked list headed at Vdbe.pAuxData. All are destroyed @@ -13844,7 +18197,7 @@ struct AuxData { }; /* -** The "context" argument for a installable function. A pointer to an +** The "context" argument for an installable function. A pointer to an ** instance of this structure is the first argument to the routines used ** implement the SQL functions. ** @@ -13857,27 +18210,16 @@ struct AuxData { ** (Mem) which are only defined there. */ struct sqlite3_context { - FuncDef *pFunc; /* Pointer to function information. MUST BE FIRST */ - Mem s; /* The return value is stored here */ - Mem *pMem; /* Memory cell used to store aggregate context */ - CollSeq *pColl; /* Collating sequence */ - Vdbe *pVdbe; /* The VM that owns this context */ - int iOp; /* Instruction number of OP_Function */ - int isError; /* Error code returned by the function. */ - u8 skipFlag; /* Skip skip accumulator loading if true */ - u8 fErrorOrAux; /* isError!=0 or pVdbe->pAuxData modified */ -}; - -/* -** An Explain object accumulates indented output which is helpful -** in describing recursive data structures. -*/ -struct Explain { - Vdbe *pVdbe; /* Attach the explanation to this Vdbe */ - StrAccum str; /* The string being accumulated */ - int nIndent; /* Number of elements in aIndent */ - u16 aIndent[100]; /* Levels of indentation */ - char zBase[100]; /* Initial space */ + Mem *pOut; /* The return value is stored here */ + FuncDef *pFunc; /* Pointer to function information */ + Mem *pMem; /* Memory cell used to store aggregate context */ + Vdbe *pVdbe; /* The VM that owns this context */ + int iOp; /* Instruction number of OP_Function */ + int isError; /* Error code returned by the function. */ + u8 skipFlag; /* Skip accumulator loading if true */ + u8 fErrorOrAux; /* isError!=0 or pVdbe->pAuxData modified */ + u8 argc; /* Number of arguments */ + sqlite3_value *argv[1]; /* Argument set */ }; /* A bitfield type for use inside of structures. Always follow with :N where @@ -13885,111 +18227,140 @@ struct Explain { */ typedef unsigned bft; /* Bit Field Type */ +typedef struct ScanStatus ScanStatus; +struct ScanStatus { + int addrExplain; /* OP_Explain for loop */ + int addrLoop; /* Address of "loops" counter */ + int addrVisit; /* Address of "rows visited" counter */ + int iSelectID; /* The "Select-ID" for this loop */ + LogEst nEst; /* Estimated output rows per loop */ + char *zName; /* Name of table or index */ +}; + /* ** An instance of the virtual machine. This structure contains the complete ** state of the virtual machine. ** ** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare() ** is really a pointer to an instance of this structure. -** -** The Vdbe.inVtabMethod variable is set to non-zero for the duration of -** any virtual table method invocations made by the vdbe program. It is -** set to 2 for xDestroy method calls and 1 for all other methods. This -** variable is used for two purposes: to allow xDestroy methods to execute -** "DROP TABLE" statements and to prevent some nasty side effects of -** malloc failure when SQLite is invoked recursively by a virtual table -** method function. */ struct Vdbe { sqlite3 *db; /* The database connection that owns this statement */ + Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ + Parse *pParse; /* Parsing context used to create this Vdbe */ + ynVar nVar; /* Number of entries in aVar[] */ + u32 magic; /* Magic number for sanity checking */ + int nMem; /* Number of memory locations currently allocated */ + int nCursor; /* Number of slots in apCsr[] */ + u32 cacheCtr; /* VdbeCursor row cache generation counter */ + int pc; /* The program counter */ + int rc; /* Value to return */ + int nChange; /* Number of db changes made since last reset */ + int iStatement; /* Statement number (or 0 if has not opened stmt) */ + i64 iCurrentTime; /* Value of julianday('now') for this statement */ + i64 nFkConstraint; /* Number of imm. FK constraints this VM */ + i64 nStmtDefCons; /* Number of def. constraints when stmt started */ + i64 nStmtDefImmCons; /* Number of def. imm constraints when stmt started */ + + /* When allocating a new Vdbe object, all of the fields below should be + ** initialized to zero or NULL */ + Op *aOp; /* Space to hold the virtual machine's program */ Mem *aMem; /* The memory locations */ Mem **apArg; /* Arguments to currently executing user function */ Mem *aColName; /* Column names to return */ Mem *pResultSet; /* Pointer to an array of results */ - Parse *pParse; /* Parsing context used to create this Vdbe */ - int nMem; /* Number of memory locations currently allocated */ - int nOp; /* Number of instructions in the program */ - int nCursor; /* Number of slots in apCsr[] */ - u32 magic; /* Magic number for sanity checking */ char *zErrMsg; /* Error message written here */ - Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ VdbeCursor **apCsr; /* One element of this array for each open cursor */ Mem *aVar; /* Values for the OP_Variable opcode. */ - char **azVar; /* Name of variables */ - ynVar nVar; /* Number of entries in aVar[] */ - ynVar nzVar; /* Number of entries in azVar[] */ - u32 cacheCtr; /* VdbeCursor row cache generation counter */ - int pc; /* The program counter */ - int rc; /* Value to return */ + VList *pVList; /* Name of variables */ +#ifndef SQLITE_OMIT_TRACE + i64 startTime; /* Time when query started - used for profiling */ +#endif + int nOp; /* Number of instructions in the program */ +#ifdef SQLITE_DEBUG + int rcApp; /* errcode set by sqlite3_result_error_code() */ +#endif u16 nResColumn; /* Number of columns in one row of the result set */ u8 errorAction; /* Recovery action to do in case of an error */ u8 minWriteFileFormat; /* Minimum file format for writable database files */ - bft explain:2; /* True if EXPLAIN present on SQL command */ - bft inVtabMethod:2; /* See comments above */ - bft changeCntOn:1; /* True to update the change-counter */ bft expired:1; /* True if the VM needs to be recompiled */ + bft doingRerun:1; /* True if rerunning after an auto-reprepare */ + bft explain:2; /* True if EXPLAIN present on SQL command */ + bft changeCntOn:1; /* True to update the change-counter */ bft runOnlyOnce:1; /* Automatically expire on reset */ bft usesStmtJournal:1; /* True if uses a statement journal */ bft readOnly:1; /* True for statements that do not write */ bft bIsReader:1; /* True for statements that read */ bft isPrepareV2:1; /* True if prepared with prepare_v2() */ - bft doingRerun:1; /* True if rerunning after an auto-reprepare */ - int nChange; /* Number of db changes made since last reset */ yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */ yDbMask lockMask; /* Subset of btreeMask that requires a lock */ - int iStatement; /* Statement number (or 0 if has not opened stmt) */ u32 aCounter[5]; /* Counters used by sqlite3_stmt_status() */ -#ifndef SQLITE_OMIT_TRACE - i64 startTime; /* Time when query started - used for profiling */ -#endif - i64 iCurrentTime; /* Value of julianday('now') for this statement */ - i64 nFkConstraint; /* Number of imm. FK constraints this VM */ - i64 nStmtDefCons; /* Number of def. constraints when stmt started */ - i64 nStmtDefImmCons; /* Number of def. imm constraints when stmt started */ char *zSql; /* Text of the SQL statement that generated this */ void *pFree; /* Free this when deleting the vdbe */ -#ifdef SQLITE_ENABLE_TREE_EXPLAIN - Explain *pExplain; /* The explainer */ - char *zExplain; /* Explanation of data structures */ -#endif VdbeFrame *pFrame; /* Parent frame */ VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */ int nFrame; /* Number of frames in pFrame list */ u32 expmask; /* Binding to these vars invalidates VM */ SubProgram *pProgram; /* Linked list of all sub-programs used by VM */ - int nOnceFlag; /* Size of array aOnceFlag[] */ - u8 *aOnceFlag; /* Flags for OP_Once */ AuxData *pAuxData; /* Linked list of auxdata allocations */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + i64 *anExec; /* Number of times each op has been executed */ + int nScan; /* Entries in aScan[] */ + ScanStatus *aScan; /* Scan definitions for sqlite3_stmt_scanstatus() */ +#endif }; /* ** The following are allowed values for Vdbe.magic */ -#define VDBE_MAGIC_INIT 0x26bceaa5 /* Building a VDBE program */ -#define VDBE_MAGIC_RUN 0xbdf20da3 /* VDBE is ready to execute */ -#define VDBE_MAGIC_HALT 0x519c2973 /* VDBE has completed execution */ -#define VDBE_MAGIC_DEAD 0xb606c3c8 /* The VDBE has been deallocated */ +#define VDBE_MAGIC_INIT 0x16bceaa5 /* Building a VDBE program */ +#define VDBE_MAGIC_RUN 0x2df20da3 /* VDBE is ready to execute */ +#define VDBE_MAGIC_HALT 0x319c2973 /* VDBE has completed execution */ +#define VDBE_MAGIC_RESET 0x48fa9f76 /* Reset and ready to run again */ +#define VDBE_MAGIC_DEAD 0x5606c3c8 /* The VDBE has been deallocated */ + +/* +** Structure used to store the context required by the +** sqlite3_preupdate_*() API functions. +*/ +struct PreUpdate { + Vdbe *v; + VdbeCursor *pCsr; /* Cursor to read old values from */ + int op; /* One of SQLITE_INSERT, UPDATE, DELETE */ + u8 *aRecord; /* old.* database record */ + KeyInfo keyinfo; + UnpackedRecord *pUnpacked; /* Unpacked version of aRecord[] */ + UnpackedRecord *pNewUnpacked; /* Unpacked version of new.* record */ + int iNewReg; /* Register for new.* values */ + i64 iKey1; /* First key value passed to hook */ + i64 iKey2; /* Second key value passed to hook */ + Mem *aNew; /* Array of new.* values */ + Table *pTab; /* Schema object being upated */ + Index *pPk; /* PK index if pTab is WITHOUT ROWID */ +}; /* ** Function prototypes */ +SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...); SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*); void sqliteVdbePopStack(Vdbe*,int); -SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor*); +SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*); +SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*); #if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, Op*); #endif SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32); -SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int); +SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8); +SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem*, int, u32*); SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32); SQLITE_PRIVATE u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); -SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(Vdbe*, int, int); +SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int); int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); -SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(VdbeCursor*,UnpackedRecord*,int*); -SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor *, i64 *); -SQLITE_PRIVATE int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*); +SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*); +SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*); SQLITE_PRIVATE int sqlite3VdbeExec(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeList(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe*); @@ -14006,50 +18377,57 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem*, i64); #else SQLITE_PRIVATE void sqlite3VdbeMemSetDouble(Mem*, double); #endif +SQLITE_PRIVATE void sqlite3VdbeMemInit(Mem*,sqlite3*,u16); SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem*); SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem*,int); SQLITE_PRIVATE void sqlite3VdbeMemSetRowSet(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem*); -SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, int); +SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, u8, u8); SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem*); SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*); SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*); -SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,int,Mem*); +SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem*,u8,u8); +SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*); SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p); -SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p); -#define VdbeMemRelease(X) \ - if((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame)) \ - sqlite3VdbeMemReleaseExternal(X); SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*); SQLITE_PRIVATE const char *sqlite3OpcodeName(int); SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve); +SQLITE_PRIVATE int sqlite3VdbeMemClearAndResize(Mem *pMem, int n); SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *, int); SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame*); SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *); -SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem); +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +SQLITE_PRIVATE void sqlite3VdbePreUpdateHook(Vdbe*,VdbeCursor*,int,const char*,Table*,i64,int); +#endif SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p); -SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *, VdbeCursor *); +SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *, int, VdbeCursor *); +SQLITE_PRIVATE void sqlite3VdbeSorterReset(sqlite3 *, VdbeSorter *); SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *); SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(const VdbeCursor *, Mem *); SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *, const VdbeCursor *, int *); -SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *, const VdbeCursor *, int *); -SQLITE_PRIVATE int sqlite3VdbeSorterWrite(sqlite3 *, const VdbeCursor *, Mem *); +SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *, int *); +SQLITE_PRIVATE int sqlite3VdbeSorterWrite(const VdbeCursor *, Mem *); SQLITE_PRIVATE int sqlite3VdbeSorterCompare(const VdbeCursor *, Mem *, int, int *); -#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 +#if !defined(SQLITE_OMIT_SHARED_CACHE) SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe*); -SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe*); #else # define sqlite3VdbeEnter(X) +#endif + +#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 +SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe*); +#else # define sqlite3VdbeLeave(X) #endif #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*); +SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem*); #endif #ifndef SQLITE_OMIT_FOREIGN_KEY @@ -14073,7 +18451,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *); #define ExpandBlob(P) SQLITE_OK #endif -#endif /* !defined(_VDBEINT_H_) */ +#endif /* !defined(SQLITE_VDBEINT_H) */ /************** End of vdbeInt.h *********************************************/ /************** Continuing where we left off in status.c *********************/ @@ -14081,12 +18459,34 @@ SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *); /* ** Variables in which to record status information. */ +#if SQLITE_PTRSIZE>4 +typedef sqlite3_int64 sqlite3StatValueType; +#else +typedef u32 sqlite3StatValueType; +#endif typedef struct sqlite3StatType sqlite3StatType; static SQLITE_WSD struct sqlite3StatType { - int nowValue[10]; /* Current value */ - int mxValue[10]; /* Maximum value */ + sqlite3StatValueType nowValue[10]; /* Current value */ + sqlite3StatValueType mxValue[10]; /* Maximum value */ } sqlite3Stat = { {0,}, {0,} }; +/* +** Elements of sqlite3Stat[] are protected by either the memory allocator +** mutex, or by the pcache1 mutex. The following array determines which. +*/ +static const char statMutex[] = { + 0, /* SQLITE_STATUS_MEMORY_USED */ + 1, /* SQLITE_STATUS_PAGECACHE_USED */ + 1, /* SQLITE_STATUS_PAGECACHE_OVERFLOW */ + 0, /* SQLITE_STATUS_SCRATCH_USED */ + 0, /* SQLITE_STATUS_SCRATCH_OVERFLOW */ + 0, /* SQLITE_STATUS_MALLOC_SIZE */ + 0, /* SQLITE_STATUS_PARSER_STACK */ + 1, /* SQLITE_STATUS_PAGECACHE_SIZE */ + 0, /* SQLITE_STATUS_SCRATCH_SIZE */ + 0, /* SQLITE_STATUS_MALLOC_COUNT */ +}; + /* The "wsdStat" macro will resolve to the status information ** state vector. If writable static data is unsupported on the target, @@ -14103,58 +18503,113 @@ static SQLITE_WSD struct sqlite3StatType { #endif /* -** Return the current value of a status parameter. +** Return the current value of a status parameter. The caller must +** be holding the appropriate mutex. */ -SQLITE_PRIVATE int sqlite3StatusValue(int op){ +SQLITE_PRIVATE sqlite3_int64 sqlite3StatusValue(int op){ wsdStatInit; assert( op>=0 && op=0 && op=0 && op=0 && opwsdStat.mxValue[op] ){ wsdStat.mxValue[op] = wsdStat.nowValue[op]; } } +SQLITE_PRIVATE void sqlite3StatusDown(int op, int N){ + wsdStatInit; + assert( N>=0 ); + assert( op>=0 && op=0 && op=0 ); + newValue = (sqlite3StatValueType)X; assert( op>=0 && opwsdStat.mxValue[op] ){ - wsdStat.mxValue[op] = wsdStat.nowValue[op]; + assert( op>=0 && opwsdStat.mxValue[op] ){ + wsdStat.mxValue[op] = newValue; } } /* ** Query status information. -** -** This implementation assumes that reading or writing an aligned -** 32-bit integer is an atomic operation. If that assumption is not true, -** then this routine is not threadsafe. */ -SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){ +SQLITE_API int sqlite3_status64( + int op, + sqlite3_int64 *pCurrent, + sqlite3_int64 *pHighwater, + int resetFlag +){ + sqlite3_mutex *pMutex; wsdStatInit; if( op<0 || op>=ArraySize(wsdStat.nowValue) ){ return SQLITE_MISUSE_BKPT; } +#ifdef SQLITE_ENABLE_API_ARMOR + if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT; +#endif + pMutex = statMutex[op] ? sqlite3Pcache1Mutex() : sqlite3MallocMutex(); + sqlite3_mutex_enter(pMutex); *pCurrent = wsdStat.nowValue[op]; *pHighwater = wsdStat.mxValue[op]; if( resetFlag ){ wsdStat.mxValue[op] = wsdStat.nowValue[op]; } + sqlite3_mutex_leave(pMutex); + (void)pMutex; /* Prevent warning when SQLITE_THREADSAFE=0 */ return SQLITE_OK; } +SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag){ + sqlite3_int64 iCur = 0, iHwtr = 0; + int rc; +#ifdef SQLITE_ENABLE_API_ARMOR + if( pCurrent==0 || pHighwater==0 ) return SQLITE_MISUSE_BKPT; +#endif + rc = sqlite3_status64(op, &iCur, &iHwtr, resetFlag); + if( rc==0 ){ + *pCurrent = (int)iCur; + *pHighwater = (int)iHwtr; + } + return rc; +} /* ** Query status information for a single database connection @@ -14167,6 +18622,11 @@ SQLITE_API int sqlite3_db_status( int resetFlag /* Reset high-water mark if true */ ){ int rc = SQLITE_OK; /* Return code */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || pCurrent==0|| pHighwater==0 ){ + return SQLITE_MISUSE_BKPT; + } +#endif sqlite3_mutex_enter(db->mutex); switch( op ){ case SQLITE_DBSTATUS_LOOKASIDE_USED: { @@ -14199,6 +18659,7 @@ SQLITE_API int sqlite3_db_status( ** by all pagers associated with the given database connection. The ** highwater mark is meaningless and is returned as zero. */ + case SQLITE_DBSTATUS_CACHE_USED_SHARED: case SQLITE_DBSTATUS_CACHE_USED: { int totalUsed = 0; int i; @@ -14207,7 +18668,11 @@ SQLITE_API int sqlite3_db_status( Btree *pBt = db->aDb[i].pBt; if( pBt ){ Pager *pPager = sqlite3BtreePager(pBt); - totalUsed += sqlite3PagerMemUsed(pPager); + int nByte = sqlite3PagerMemUsed(pPager); + if( op==SQLITE_DBSTATUS_CACHE_USED_SHARED ){ + nByte = nByte / sqlite3BtreeConnectionCount(pBt); + } + totalUsed += nByte; } } sqlite3BtreeLeaveAll(db); @@ -14238,10 +18703,10 @@ SQLITE_API int sqlite3_db_status( + pSchema->idxHash.count + pSchema->fkeyHash.count ); - nByte += sqlite3MallocSize(pSchema->tblHash.ht); - nByte += sqlite3MallocSize(pSchema->trigHash.ht); - nByte += sqlite3MallocSize(pSchema->idxHash.ht); - nByte += sqlite3MallocSize(pSchema->fkeyHash.ht); + nByte += sqlite3_msize(pSchema->tblHash.ht); + nByte += sqlite3_msize(pSchema->trigHash.ht); + nByte += sqlite3_msize(pSchema->idxHash.ht); + nByte += sqlite3_msize(pSchema->fkeyHash.ht); for(p=sqliteHashFirst(&pSchema->trigHash); p; p=sqliteHashNext(p)){ sqlite3DeleteTrigger(db, (Trigger*)sqliteHashData(p)); @@ -14275,7 +18740,7 @@ SQLITE_API int sqlite3_db_status( } db->pnBytesFreed = 0; - *pHighwater = 0; + *pHighwater = 0; /* IMP: R-64479-57858 */ *pCurrent = nByte; break; @@ -14300,7 +18765,9 @@ SQLITE_API int sqlite3_db_status( sqlite3PagerCacheStat(pPager, op, resetFlag, &nRet); } } - *pHighwater = 0; + *pHighwater = 0; /* IMP: R-42420-56072 */ + /* IMP: R-54100-20147 */ + /* IMP: R-29431-39229 */ *pCurrent = nRet; break; } @@ -14310,7 +18777,7 @@ SQLITE_API int sqlite3_db_status( ** have been satisfied. The *pHighwater is always set to zero. */ case SQLITE_DBSTATUS_DEFERRED_FKS: { - *pHighwater = 0; + *pHighwater = 0; /* IMP: R-11967-56545 */ *pCurrent = db->nDeferredImmCons>0 || db->nDeferredCons>0; break; } @@ -14343,7 +18810,7 @@ SQLITE_API int sqlite3_db_status( ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file. ** All other code has file scope. ** -** SQLite processes all times and dates as Julian Day numbers. The +** SQLite processes all times and dates as julian day numbers. The ** dates and times are stored as the number of days since noon ** in Greenwich on November 24, 4714 B.C. according to the Gregorian ** calendar system. @@ -14351,14 +18818,14 @@ SQLITE_API int sqlite3_db_status( ** 1970-01-01 00:00:00 is JD 2440587.5 ** 2000-01-01 00:00:00 is JD 2451544.5 ** -** This implemention requires years to be expressed as a 4-digit number +** This implementation requires years to be expressed as a 4-digit number ** which means that only dates between 0000-01-01 and 9999-12-31 can ** be represented, even though julian day numbers allow a much wider ** range of dates. ** ** The Gregorian calendar system is used for all dates and times, ** even those that predate the Gregorian calendar. Historians usually -** use the Julian calendar for dates prior to 1582-10-15 and for some +** use the julian calendar for dates prior to 1582-10-15 and for some ** dates afterwards, depending on locale. Beware of this difference. ** ** The conversion algorithms are implemented based on descriptions @@ -14370,59 +18837,87 @@ SQLITE_API int sqlite3_db_status( ** Willmann-Bell, Inc ** Richmond, Virginia (USA) */ +/* #include "sqliteInt.h" */ /* #include */ /* #include */ #include #ifndef SQLITE_OMIT_DATETIME_FUNCS +/* +** The MSVC CRT on Windows CE may not have a localtime() function. +** So declare a substitute. The substitute function itself is +** defined in "os_win.c". +*/ +#if !defined(SQLITE_OMIT_LOCALTIME) && defined(_WIN32_WCE) && \ + (!defined(SQLITE_MSVC_LOCALTIME_API) || !SQLITE_MSVC_LOCALTIME_API) +struct tm *__cdecl localtime(const time_t *); +#endif /* ** A structure for holding a single date and time. */ typedef struct DateTime DateTime; struct DateTime { - sqlite3_int64 iJD; /* The julian day number times 86400000 */ - int Y, M, D; /* Year, month, and day */ - int h, m; /* Hour and minutes */ - int tz; /* Timezone offset in minutes */ - double s; /* Seconds */ - char validYMD; /* True (1) if Y,M,D are valid */ - char validHMS; /* True (1) if h,m,s are valid */ - char validJD; /* True (1) if iJD is valid */ - char validTZ; /* True (1) if tz is valid */ + sqlite3_int64 iJD; /* The julian day number times 86400000 */ + int Y, M, D; /* Year, month, and day */ + int h, m; /* Hour and minutes */ + int tz; /* Timezone offset in minutes */ + double s; /* Seconds */ + char validJD; /* True (1) if iJD is valid */ + char rawS; /* Raw numeric value stored in s */ + char validYMD; /* True (1) if Y,M,D are valid */ + char validHMS; /* True (1) if h,m,s are valid */ + char validTZ; /* True (1) if tz is valid */ + char tzSet; /* Timezone was set explicitly */ + char isError; /* An overflow has occurred */ }; /* -** Convert zDate into one or more integers. Additional arguments -** come in groups of 5 as follows: +** Convert zDate into one or more integers according to the conversion +** specifier zFormat. ** -** N number of digits in the integer -** min minimum allowed value of the integer -** max maximum allowed value of the integer -** nextC first character after the integer -** pVal where to write the integers value. +** zFormat[] contains 4 characters for each integer converted, except for +** the last integer which is specified by three characters. The meaning +** of a four-character format specifiers ABCD is: +** +** A: number of digits to convert. Always "2" or "4". +** B: minimum value. Always "0" or "1". +** C: maximum value, decoded as: +** a: 12 +** b: 14 +** c: 24 +** d: 31 +** e: 59 +** f: 9999 +** D: the separator character, or \000 to indicate this is the +** last number to convert. +** +** Example: To translate an ISO-8601 date YYYY-MM-DD, the format would +** be "40f-21a-20c". The "40f-" indicates the 4-digit year followed by "-". +** The "21a-" indicates the 2-digit month followed by "-". The "20c" indicates +** the 2-digit day which is the last integer in the set. ** -** Conversions continue until one with nextC==0 is encountered. ** The function returns the number of successful conversions. */ -static int getDigits(const char *zDate, ...){ +static int getDigits(const char *zDate, const char *zFormat, ...){ + /* The aMx[] array translates the 3rd character of each format + ** spec into a max size: a b c d e f */ + static const u16 aMx[] = { 12, 14, 24, 31, 59, 9999 }; va_list ap; - int val; - int N; - int min; - int max; - int nextC; - int *pVal; int cnt = 0; - va_start(ap, zDate); + char nextC; + va_start(ap, zFormat); do{ - N = va_arg(ap, int); - min = va_arg(ap, int); - max = va_arg(ap, int); - nextC = va_arg(ap, int); - pVal = va_arg(ap, int*); + char N = zFormat[0] - '0'; + char min = zFormat[1] - '0'; + int val = 0; + u16 max; + + assert( zFormat[2]>='a' && zFormat[2]<='f' ); + max = aMx[zFormat[2] - 'a']; + nextC = zFormat[3]; val = 0; while( N-- ){ if( !sqlite3Isdigit(*zDate) ){ @@ -14431,12 +18926,13 @@ static int getDigits(const char *zDate, ...){ val = val*10 + *zDate - '0'; zDate++; } - if( valmax || (nextC!=0 && nextC!=*zDate) ){ + if( val<(int)min || val>(int)max || (nextC!=0 && nextC!=*zDate) ){ goto end_getDigits; } - *pVal = val; + *va_arg(ap,int*) = val; zDate++; cnt++; + zFormat += 4; }while( nextC ); end_getDigits: va_end(ap); @@ -14477,13 +18973,14 @@ static int parseTimezone(const char *zDate, DateTime *p){ return c!=0; } zDate++; - if( getDigits(zDate, 2, 0, 14, ':', &nHr, 2, 0, 59, 0, &nMn)!=2 ){ + if( getDigits(zDate, "20b:20e", &nHr, &nMn)!=2 ){ return 1; } zDate += 5; p->tz = sgn*(nMn + nHr*60); zulu_time: while( sqlite3Isspace(*zDate) ){ zDate++; } + p->tzSet = 1; return *zDate!=0; } @@ -14497,13 +18994,13 @@ zulu_time: static int parseHhMmSs(const char *zDate, DateTime *p){ int h, m, s; double ms = 0.0; - if( getDigits(zDate, 2, 0, 24, ':', &h, 2, 0, 59, 0, &m)!=2 ){ + if( getDigits(zDate, "20c:20e", &h, &m)!=2 ){ return 1; } zDate += 5; if( *zDate==':' ){ zDate++; - if( getDigits(zDate, 2, 0, 59, 0, &s)!=1 ){ + if( getDigits(zDate, "20e", &s)!=1 ){ return 1; } zDate += 2; @@ -14521,6 +19018,7 @@ static int parseHhMmSs(const char *zDate, DateTime *p){ s = 0; } p->validJD = 0; + p->rawS = 0; p->validHMS = 1; p->h = h; p->m = m; @@ -14530,6 +19028,14 @@ static int parseHhMmSs(const char *zDate, DateTime *p){ return 0; } +/* +** Put the DateTime object into its error state. +*/ +static void datetimeError(DateTime *p){ + memset(p, 0, sizeof(*p)); + p->isError = 1; +} + /* ** Convert from YYYY-MM-DD HH:MM:SS to julian day. We always assume ** that the YYYY-MM-DD is according to the Gregorian calendar. @@ -14549,6 +19055,10 @@ static void computeJD(DateTime *p){ M = 1; D = 1; } + if( Y<-4713 || Y>9999 || p->rawS ){ + datetimeError(p); + return; + } if( M<=2 ){ Y--; M += 12; @@ -14591,7 +19101,7 @@ static int parseYyyyMmDd(const char *zDate, DateTime *p){ }else{ neg = 0; } - if( getDigits(zDate,4,0,9999,'-',&Y,2,1,12,'-',&M,2,1,31,0,&D)!=3 ){ + if( getDigits(zDate, "40f-21a-21d", &Y, &M, &D)!=3 ){ return 1; } zDate += 10; @@ -14630,7 +19140,22 @@ static int setDateTimeToCurrent(sqlite3_context *context, DateTime *p){ } /* -** Attempt to parse the given string into a Julian Day Number. Return +** Input "r" is a numeric quantity which might be a julian day number, +** or the number of seconds since 1970. If the value if r is within +** range of a julian day number, install it as such and set validJD. +** If the value is a valid unix timestamp, put it in p->s and set p->rawS. +*/ +static void setRawDateNumber(DateTime *p, double r){ + p->s = r; + p->rawS = 1; + if( r>=0.0 && r<5373484.5 ){ + p->iJD = (sqlite3_int64)(r*86400000.0 + 0.5); + p->validJD = 1; + } +} + +/* +** Attempt to parse the given string into a julian day number. Return ** the number of errors. ** ** The following are acceptable forms for the input string: @@ -14658,13 +19183,30 @@ static int parseDateOrTime( }else if( sqlite3StrICmp(zDate,"now")==0){ return setDateTimeToCurrent(context, p); }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){ - p->iJD = (sqlite3_int64)(r*86400000.0 + 0.5); - p->validJD = 1; + setRawDateNumber(p, r); return 0; } return 1; } +/* The julian day number for 9999-12-31 23:59:59.999 is 5373484.4999999. +** Multiplying this by 86400000 gives 464269060799999 as the maximum value +** for DateTime.iJD. +** +** But some older compilers (ex: gcc 4.2.1 on older Macs) cannot deal with +** such a large integer literal, so we have to encode it. +*/ +#define INT_464269060799999 ((((i64)0x1a640)<<32)|0x1072fdff) + +/* +** Return TRUE if the given julian day number is within range. +** +** The input is the JulianDay times 86400000. +*/ +static int validJulianDay(sqlite3_int64 iJD){ + return iJD>=0 && iJD<=INT_464269060799999; +} + /* ** Compute the Year, Month, and Day from the julian day number. */ @@ -14676,12 +19218,13 @@ static void computeYMD(DateTime *p){ p->M = 1; p->D = 1; }else{ + assert( validJulianDay(p->iJD) ); Z = (int)((p->iJD + 43200000)/86400000); A = (int)((Z - 1867216.25)/36524.25); A = Z + 1 + A - (A/4); B = A + 1524; C = (int)((B - 122.1)/365.25); - D = (36525*C)/100; + D = (36525*(C&32767))/100; E = (int)((B-D)/30.6001); X1 = (int)(30.6001*E); p->D = B - D - X1; @@ -14706,6 +19249,7 @@ static void computeHMS(DateTime *p){ s -= p->h*3600; p->m = s/60; p->s += s - p->m*60; + p->rawS = 0; p->validHMS = 1; } @@ -14726,6 +19270,7 @@ static void clearYMD_HMS_TZ(DateTime *p){ p->validTZ = 0; } +#ifndef SQLITE_OMIT_LOCALTIME /* ** On recent Windows platforms, the localtime_s() function is available ** as part of the "Secure CRT". It is essentially equivalent to @@ -14738,12 +19283,12 @@ static void clearYMD_HMS_TZ(DateTime *p){ ** already, check for an MSVC build environment that provides ** localtime_s(). */ -#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \ - defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE) +#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S \ + && defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE) +#undef HAVE_LOCALTIME_S #define HAVE_LOCALTIME_S 1 #endif -#ifndef SQLITE_OMIT_LOCALTIME /* ** The following routine implements the rough equivalent of localtime_r() ** using whatever operating-system specific localtime facility that @@ -14759,25 +19304,24 @@ static void clearYMD_HMS_TZ(DateTime *p){ */ static int osLocaltime(time_t *t, struct tm *pTm){ int rc; -#if (!defined(HAVE_LOCALTIME_R) || !HAVE_LOCALTIME_R) \ - && (!defined(HAVE_LOCALTIME_S) || !HAVE_LOCALTIME_S) +#if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S struct tm *pX; #if SQLITE_THREADSAFE>0 sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); #endif sqlite3_mutex_enter(mutex); pX = localtime(t); -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0; #endif if( pX ) *pTm = *pX; sqlite3_mutex_leave(mutex); rc = pX==0; #else -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE if( sqlite3GlobalConfig.bLocaltimeFault ) return 1; #endif -#if defined(HAVE_LOCALTIME_R) && HAVE_LOCALTIME_R +#if HAVE_LOCALTIME_R rc = localtime_r(t, pTm)==0; #else rc = localtime_s(pTm, t); @@ -14845,13 +19389,38 @@ static sqlite3_int64 localtimeOffset( y.validYMD = 1; y.validHMS = 1; y.validJD = 0; + y.rawS = 0; y.validTZ = 0; + y.isError = 0; computeJD(&y); *pRc = SQLITE_OK; return y.iJD - x.iJD; } #endif /* SQLITE_OMIT_LOCALTIME */ +/* +** The following table defines various date transformations of the form +** +** 'NNN days' +** +** Where NNN is an arbitrary floating-point number and "days" can be one +** of several units of time. +*/ +static const struct { + u8 eType; /* Transformation type code */ + u8 nName; /* Length of th name */ + char *zName; /* Name of the transformation */ + double rLimit; /* Maximum NNN value for this transform */ + double rXform; /* Constant used for this transform */ +} aXformType[] = { + { 0, 6, "second", 464269060800.0, 86400000.0/(24.0*60.0*60.0) }, + { 0, 6, "minute", 7737817680.0, 86400000.0/(24.0*60.0) }, + { 0, 4, "hour", 128963628.0, 86400000.0/24.0 }, + { 0, 3, "day", 5373485.0, 86400000.0 }, + { 1, 5, "month", 176546.0, 30.0*86400000.0 }, + { 2, 4, "year", 14713.0, 365.0*86400000.0 }, +}; + /* ** Process a modifier to a date-time stamp. The modifiers are ** as follows: @@ -14876,17 +19445,15 @@ static sqlite3_int64 localtimeOffset( ** to context pCtx. If the error is an unrecognized modifier, no error is ** written to pCtx. */ -static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ +static int parseModifier( + sqlite3_context *pCtx, /* Function context */ + const char *z, /* The text of the modifier */ + int n, /* Length of zMod in bytes */ + DateTime *p /* The date/time value to be modified */ +){ int rc = 1; - int n; double r; - char *z, zBuf[30]; - z = zBuf; - for(n=0; niJD += localtimeOffset(p, pCtx, &rc); clearYMD_HMS_TZ(p); @@ -14906,23 +19473,33 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ /* ** unixepoch ** - ** Treat the current value of p->iJD as the number of + ** Treat the current value of p->s as the number of ** seconds since 1970. Convert to a real julian day number. */ - if( strcmp(z, "unixepoch")==0 && p->validJD ){ - p->iJD = (p->iJD + 43200)/86400 + 21086676*(i64)10000000; - clearYMD_HMS_TZ(p); - rc = 0; + if( sqlite3_stricmp(z, "unixepoch")==0 && p->rawS ){ + r = p->s*1000.0 + 210866760000000.0; + if( r>=0.0 && r<464269060800000.0 ){ + clearYMD_HMS_TZ(p); + p->iJD = (sqlite3_int64)r; + p->validJD = 1; + p->rawS = 0; + rc = 0; + } } #ifndef SQLITE_OMIT_LOCALTIME - else if( strcmp(z, "utc")==0 ){ - sqlite3_int64 c1; - computeJD(p); - c1 = localtimeOffset(p, pCtx, &rc); - if( rc==SQLITE_OK ){ - p->iJD -= c1; - clearYMD_HMS_TZ(p); - p->iJD += c1 - localtimeOffset(p, pCtx, &rc); + else if( sqlite3_stricmp(z, "utc")==0 ){ + if( p->tzSet==0 ){ + sqlite3_int64 c1; + computeJD(p); + c1 = localtimeOffset(p, pCtx, &rc); + if( rc==SQLITE_OK ){ + p->iJD -= c1; + clearYMD_HMS_TZ(p); + p->iJD += c1 - localtimeOffset(p, pCtx, &rc); + } + p->tzSet = 1; + }else{ + rc = SQLITE_OK; } } #endif @@ -14936,7 +19513,7 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ ** weekday N where 0==Sunday, 1==Monday, and so forth. If the ** date is already on the appropriate weekday, this is a no-op. */ - if( strncmp(z, "weekday ", 8)==0 + if( sqlite3_strnicmp(z, "weekday ", 8)==0 && sqlite3AtoF(&z[8], &r, sqlite3Strlen30(&z[8]), SQLITE_UTF8) && (n=(int)r)==r && n>=0 && r<7 ){ sqlite3_int64 Z; @@ -14959,7 +19536,7 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ ** Move the date backwards to the beginning of the current day, ** or month or year. */ - if( strncmp(z, "start of ", 9)!=0 ) break; + if( sqlite3_strnicmp(z, "start of ", 9)!=0 ) break; z += 9; computeYMD(p); p->validHMS = 1; @@ -14967,15 +19544,15 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ p->s = 0.0; p->validTZ = 0; p->validJD = 0; - if( strcmp(z,"month")==0 ){ + if( sqlite3_stricmp(z,"month")==0 ){ p->D = 1; rc = 0; - }else if( strcmp(z,"year")==0 ){ + }else if( sqlite3_stricmp(z,"year")==0 ){ computeYMD(p); p->M = 1; p->D = 1; rc = 0; - }else if( strcmp(z,"day")==0 ){ + }else if( sqlite3_stricmp(z,"day")==0 ){ rc = 0; } break; @@ -14993,6 +19570,7 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ case '8': case '9': { double rRounder; + int i; for(n=1; z[n] && z[n]!=':' && !sqlite3Isspace(z[n]); n++){} if( !sqlite3AtoF(z, &r, n, SQLITE_UTF8) ){ rc = 1; @@ -15021,46 +19599,48 @@ static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ rc = 0; break; } + + /* If control reaches this point, it means the transformation is + ** one of the forms like "+NNN days". */ z += n; while( sqlite3Isspace(*z) ) z++; n = sqlite3Strlen30(z); if( n>10 || n<3 ) break; - if( z[n-1]=='s' ){ z[n-1] = 0; n--; } + if( sqlite3UpperToLower[(u8)z[n-1]]=='s' ) n--; computeJD(p); - rc = 0; + rc = 1; rRounder = r<0 ? -0.5 : +0.5; - if( n==3 && strcmp(z,"day")==0 ){ - p->iJD += (sqlite3_int64)(r*86400000.0 + rRounder); - }else if( n==4 && strcmp(z,"hour")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/24.0) + rRounder); - }else if( n==6 && strcmp(z,"minute")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0)) + rRounder); - }else if( n==6 && strcmp(z,"second")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0*60.0)) + rRounder); - }else if( n==5 && strcmp(z,"month")==0 ){ - int x, y; - computeYMD_HMS(p); - p->M += (int)r; - x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12; - p->Y += x; - p->M -= x*12; - p->validJD = 0; - computeJD(p); - y = (int)r; - if( y!=r ){ - p->iJD += (sqlite3_int64)((r - y)*30.0*86400000.0 + rRounder); + for(i=0; i-aXformType[i].rLimit && rM += (int)r; + x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12; + p->Y += x; + p->M -= x*12; + p->validJD = 0; + r -= (int)r; + break; + } + case 2: { /* Special processing to add years */ + int y = (int)r; + computeYMD_HMS(p); + p->Y += y; + p->validJD = 0; + r -= (int)r; + break; + } + } + computeJD(p); + p->iJD += (sqlite3_int64)(r*aXformType[i].rXform + rRounder); + rc = 0; + break; } - }else if( n==4 && strcmp(z,"year")==0 ){ - int y = (int)r; - computeYMD_HMS(p); - p->Y += y; - p->validJD = 0; - computeJD(p); - if( y!=r ){ - p->iJD += (sqlite3_int64)((r - y)*365.0*86400000.0 + rRounder); - } - }else{ - rc = 1; } clearYMD_HMS_TZ(p); break; @@ -15087,7 +19667,7 @@ static int isDate( sqlite3_value **argv, DateTime *p ){ - int i; + int i, n; const unsigned char *z; int eType; memset(p, 0, sizeof(*p)); @@ -15096,8 +19676,7 @@ static int isDate( } if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT || eType==SQLITE_INTEGER ){ - p->iJD = (sqlite3_int64)(sqlite3_value_double(argv[0])*86400000.0 + 0.5); - p->validJD = 1; + setRawDateNumber(p, sqlite3_value_double(argv[0])); }else{ z = sqlite3_value_text(argv[0]); if( !z || parseDateOrTime(context, (char*)z, p) ){ @@ -15106,8 +19685,11 @@ static int isDate( } for(i=1; iisError || !validJulianDay(p->iJD) ) return 1; return 0; } @@ -15201,7 +19783,7 @@ static void dateFunc( ** %f ** fractional seconds SS.SSS ** %H hour 00-24 ** %j day of year 000-366 -** %J ** Julian day number +** %J ** julian day number ** %m month 01-12 ** %M minute 00-59 ** %s seconds since 1970-01-01 @@ -15221,8 +19803,10 @@ static void strftimeFunc( size_t i,j; char *z; sqlite3 *db; - const char *zFmt = (const char*)sqlite3_value_text(argv[0]); + const char *zFmt; char zBuf[100]; + if( argc==0 ) return; + zFmt = (const char*)sqlite3_value_text(argv[0]); if( zFmt==0 || isDate(context, argc-1, argv+1, &x) ) return; db = sqlite3_context_db_handle(context); for(i=0, n=1; zFmt[i]; i++, n++){ @@ -15268,7 +19852,7 @@ static void strftimeFunc( sqlite3_result_error_toobig(context); return; }else{ - z = sqlite3DbMallocRaw(db, (int)n); + z = sqlite3DbMallocRawNN(db, (int)n); if( z==0 ){ sqlite3_result_error_nomem(context); return; @@ -15404,7 +19988,6 @@ static void currentTimeFunc( ){ time_t t; char *zFormat = (char *)sqlite3_user_data(context); - sqlite3 *db; sqlite3_int64 iT; struct tm *pTm; struct tm sNow; @@ -15416,7 +19999,7 @@ static void currentTimeFunc( iT = sqlite3StmtCurrentTime(context); if( iT<=0 ) return; t = iT/1000 - 10000*(sqlite3_int64)21086676; -#ifdef HAVE_GMTIME_R +#if HAVE_GMTIME_R pTm = gmtime_r(&t, &sNow); #else sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); @@ -15437,29 +20020,23 @@ static void currentTimeFunc( ** external linkage. */ SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void){ - static SQLITE_WSD FuncDef aDateTimeFuncs[] = { + static FuncDef aDateTimeFuncs[] = { #ifndef SQLITE_OMIT_DATETIME_FUNCS - FUNCTION(julianday, -1, 0, 0, juliandayFunc ), - FUNCTION(date, -1, 0, 0, dateFunc ), - FUNCTION(time, -1, 0, 0, timeFunc ), - FUNCTION(datetime, -1, 0, 0, datetimeFunc ), - FUNCTION(strftime, -1, 0, 0, strftimeFunc ), - FUNCTION(current_time, 0, 0, 0, ctimeFunc ), - FUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), - FUNCTION(current_date, 0, 0, 0, cdateFunc ), + DFUNCTION(julianday, -1, 0, 0, juliandayFunc ), + DFUNCTION(date, -1, 0, 0, dateFunc ), + DFUNCTION(time, -1, 0, 0, timeFunc ), + DFUNCTION(datetime, -1, 0, 0, datetimeFunc ), + DFUNCTION(strftime, -1, 0, 0, strftimeFunc ), + DFUNCTION(current_time, 0, 0, 0, ctimeFunc ), + DFUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), + DFUNCTION(current_date, 0, 0, 0, cdateFunc ), #else STR_FUNCTION(current_time, 0, "%H:%M:%S", 0, currentTimeFunc), STR_FUNCTION(current_date, 0, "%Y-%m-%d", 0, currentTimeFunc), STR_FUNCTION(current_timestamp, 0, "%Y-%m-%d %H:%M:%S", 0, currentTimeFunc), #endif }; - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aDateTimeFuncs); - - for(i=0; ipMethods ){ - rc = pId->pMethods->xClose(pId); + pId->pMethods->xClose(pId); pId->pMethods = 0; } - return rc; } SQLITE_PRIVATE int sqlite3OsRead(sqlite3_file *id, void *pBuf, int amt, i64 offset){ DO_OS_MALLOC_TEST(id); @@ -15575,8 +20171,8 @@ SQLITE_PRIVATE int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){ #ifdef SQLITE_TEST if( op!=SQLITE_FCNTL_COMMIT_PHASETWO ){ /* Faults are not injected into COMMIT_PHASETWO because, assuming SQLite - ** is using a regular VFS, it is called after the corresponding - ** transaction has been committed. Injecting a fault at this point + ** is using a regular VFS, it is called after the corresponding + ** transaction has been committed. Injecting a fault at this point ** confuses the test scripts - the COMMIT comand returns SQLITE_NOMEM ** but the transaction is committed anyway. ** @@ -15645,10 +20241,10 @@ SQLITE_PRIVATE int sqlite3OsUnfetch(sqlite3_file *id, i64 iOff, void *p){ ** VFS methods. */ SQLITE_PRIVATE int sqlite3OsOpen( - sqlite3_vfs *pVfs, - const char *zPath, - sqlite3_file *pFile, - int flags, + sqlite3_vfs *pVfs, + const char *zPath, + sqlite3_file *pFile, + int flags, int *pFlagsOut ){ int rc; @@ -15667,18 +20263,18 @@ SQLITE_PRIVATE int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dir return pVfs->xDelete(pVfs, zPath, dirSync); } SQLITE_PRIVATE int sqlite3OsAccess( - sqlite3_vfs *pVfs, - const char *zPath, - int flags, + sqlite3_vfs *pVfs, + const char *zPath, + int flags, int *pResOut ){ DO_OS_MALLOC_TEST(0); return pVfs->xAccess(pVfs, zPath, flags, pResOut); } SQLITE_PRIVATE int sqlite3OsFullPathname( - sqlite3_vfs *pVfs, - const char *zPath, - int nPathOut, + sqlite3_vfs *pVfs, + const char *zPath, + int nPathOut, char *zPathOut ){ DO_OS_MALLOC_TEST(0); @@ -15705,6 +20301,9 @@ SQLITE_PRIVATE int sqlite3OsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufO SQLITE_PRIVATE int sqlite3OsSleep(sqlite3_vfs *pVfs, int nMicro){ return pVfs->xSleep(pVfs, nMicro); } +SQLITE_PRIVATE int sqlite3OsGetLastError(sqlite3_vfs *pVfs){ + return pVfs->xGetLastError ? pVfs->xGetLastError(pVfs, 0, 0) : 0; +} SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *pTimeOut){ int rc; /* IMPLEMENTATION-OF: R-49045-42493 SQLite will use the xCurrentTimeInt64() @@ -15724,13 +20323,13 @@ SQLITE_PRIVATE int sqlite3OsCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p } SQLITE_PRIVATE int sqlite3OsOpenMalloc( - sqlite3_vfs *pVfs, - const char *zFile, - sqlite3_file **ppFile, + sqlite3_vfs *pVfs, + const char *zFile, + sqlite3_file **ppFile, int flags, int *pOutFlags ){ - int rc = SQLITE_NOMEM; + int rc; sqlite3_file *pFile; pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile); if( pFile ){ @@ -15740,15 +20339,15 @@ SQLITE_PRIVATE int sqlite3OsOpenMalloc( }else{ *ppFile = pFile; } + }else{ + rc = SQLITE_NOMEM_BKPT; } return rc; } -SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *pFile){ - int rc = SQLITE_OK; +SQLITE_PRIVATE void sqlite3OsCloseFree(sqlite3_file *pFile){ assert( pFile ); - rc = sqlite3OsClose(pFile); + sqlite3OsClose(pFile); sqlite3_free(pFile); - return rc; } /* @@ -15759,7 +20358,7 @@ SQLITE_PRIVATE int sqlite3OsCloseFree(sqlite3_file *pFile){ */ SQLITE_PRIVATE int sqlite3OsInit(void){ void *p = sqlite3_malloc(10); - if( p==0 ) return SQLITE_NOMEM; + if( p==0 ) return SQLITE_NOMEM_BKPT; sqlite3_free(p); return sqlite3_os_init(); } @@ -15826,6 +20425,10 @@ SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){ int rc = sqlite3_initialize(); if( rc ) return rc; #endif +#ifdef SQLITE_ENABLE_API_ARMOR + if( pVfs==0 ) return SQLITE_MISUSE_BKPT; +#endif + MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) sqlite3_mutex_enter(mutex); vfsUnlink(pVfs); @@ -15882,8 +20485,9 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){ ** during a hash table resize is a benign fault. */ +/* #include "sqliteInt.h" */ -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE /* ** Global variables. @@ -15941,7 +20545,7 @@ SQLITE_PRIVATE void sqlite3EndBenignMalloc(void){ } } -#endif /* #ifndef SQLITE_OMIT_BUILTIN_TEST */ +#endif /* #ifndef SQLITE_UNTESTABLE */ /************** End of fault.c ***********************************************/ /************** Begin file mem0.c ********************************************/ @@ -15963,6 +20567,7 @@ SQLITE_PRIVATE void sqlite3EndBenignMalloc(void){ ** are merely placeholders. Real drivers must be substituted using ** sqlite3_config() before SQLite will operate. */ +/* #include "sqliteInt.h" */ /* ** This version of the memory allocator is the default. It is @@ -16049,6 +20654,7 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ ** be necessary when compiling for Delphi, ** for example. */ +/* #include "sqliteInt.h" */ /* ** This version of the memory allocator is the default. It is @@ -16086,9 +20692,9 @@ static malloc_zone_t* _sqliteZone_; ** The malloc.h header file is needed for malloc_usable_size() function ** on some systems (e.g. Linux). */ -#if defined(HAVE_MALLOC_H) && defined(HAVE_MALLOC_USABLE_SIZE) -# define SQLITE_USE_MALLOC_H -# define SQLITE_USE_MALLOC_USABLE_SIZE +#if HAVE_MALLOC_H && HAVE_MALLOC_USABLE_SIZE +# define SQLITE_USE_MALLOC_H 1 +# define SQLITE_USE_MALLOC_USABLE_SIZE 1 /* ** The MSVCRT has malloc_usable_size(), but it is called _msize(). The ** use of _msize() is automatic, but can be disabled by compiling with @@ -16132,7 +20738,9 @@ static malloc_zone_t* _sqliteZone_; */ static void *sqlite3MemMalloc(int nByte){ #ifdef SQLITE_MALLOCSIZE - void *p = SQLITE_MALLOC( nByte ); + void *p; + testcase( ROUND8(nByte)==nByte ); + p = SQLITE_MALLOC( nByte ); if( p==0 ){ testcase( sqlite3GlobalConfig.xLog!=0 ); sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte); @@ -16141,7 +20749,7 @@ static void *sqlite3MemMalloc(int nByte){ #else sqlite3_int64 *p; assert( nByte>0 ); - nByte = ROUND8(nByte); + testcase( ROUND8(nByte)!=nByte ); p = SQLITE_MALLOC( nByte+8 ); if( p ){ p[0] = nByte; @@ -16179,10 +20787,11 @@ static void sqlite3MemFree(void *pPrior){ */ static int sqlite3MemSize(void *pPrior){ #ifdef SQLITE_MALLOCSIZE - return pPrior ? (int)SQLITE_MALLOCSIZE(pPrior) : 0; + assert( pPrior!=0 ); + return (int)SQLITE_MALLOCSIZE(pPrior); #else sqlite3_int64 *p; - if( pPrior==0 ) return 0; + assert( pPrior!=0 ); p = (sqlite3_int64*)pPrior; p--; return (int)p[0]; @@ -16195,7 +20804,7 @@ static int sqlite3MemSize(void *pPrior){ ** ** For this low-level interface, we know that pPrior!=0. Cases where ** pPrior==0 while have been intercepted by higher-level routine and -** redirected to xMalloc. Similarly, we know that nByte>0 becauses +** redirected to xMalloc. Similarly, we know that nByte>0 because ** cases where nByte<=0 will have been intercepted by higher-level ** routines and redirected to xFree. */ @@ -16324,6 +20933,7 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ ** This file contains implementations of the low-level memory allocation ** routines specified in the sqlite3_mem_methods object. */ +/* #include "sqliteInt.h" */ /* ** This version of the memory allocator is used only if the @@ -16698,7 +21308,7 @@ SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){ ** This routine is designed for use within an assert() statement, to ** verify the type of an allocation. For example: ** -** assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); +** assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); */ SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){ int rc = 1; @@ -16720,7 +21330,7 @@ SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){ ** This routine is designed for use within an assert() statement, to ** verify the type of an allocation. For example: ** -** assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); +** assert( sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); */ SQLITE_PRIVATE int sqlite3MemdebugNoType(void *p, u8 eType){ int rc = 1; @@ -16858,6 +21468,7 @@ SQLITE_PRIVATE int sqlite3MemdebugMallocCount(){ ** This version of the memory allocation subsystem is included ** in the build only if SQLITE_ENABLE_MEMSYS3 is defined. */ +/* #include "sqliteInt.h" */ /* ** This version of the memory allocator is only built into the library @@ -17310,7 +21921,7 @@ static void memsys3FreeUnsafe(void *pOld){ */ static int memsys3Size(void *p){ Mem3Block *pBlock; - if( p==0 ) return 0; + assert( p!=0 ); pBlock = (Mem3Block*)p; assert( (pBlock[-1].u.hdr.size4x&1)!=0 ); return (pBlock[-1].u.hdr.size4x&~3)*2 - 4; @@ -17549,10 +22160,10 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void){ ** ** This memory allocator uses the following algorithm: ** -** 1. All memory allocations sizes are rounded up to a power of 2. +** 1. All memory allocation sizes are rounded up to a power of 2. ** ** 2. If two adjacent free blocks are the halves of a larger block, -** then the two blocks are coalesed into the single larger block. +** then the two blocks are coalesced into the single larger block. ** ** 3. New memory is allocated from the first available free block. ** @@ -17572,6 +22183,7 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void){ ** The sqlite3_status() logic tracks the maximum values of n and M so ** that an application can, at any time, verify this constraint. */ +/* #include "sqliteInt.h" */ /* ** This version of the memory allocator is used only when @@ -17625,6 +22237,7 @@ static SQLITE_WSD struct Mem5Global { */ sqlite3_mutex *mutex; +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) /* ** Performance statistics */ @@ -17636,11 +22249,12 @@ static SQLITE_WSD struct Mem5Global { u32 maxOut; /* Maximum instantaneous currentOut */ u32 maxCount; /* Maximum instantaneous currentCount */ u32 maxRequest; /* Largest allocation (exclusive of internal frag) */ +#endif /* ** Lists of free blocks. aiFreelist[0] is a list of free blocks of ** size mem5.szAtom. aiFreelist[1] holds blocks of size szAtom*2. - ** and so forth. + ** aiFreelist[2] holds free blocks of size szAtom*4. And so forth. */ int aiFreelist[LOGMAX+1]; @@ -17706,9 +22320,7 @@ static void memsys5Link(int i, int iLogsize){ } /* -** If the STATIC_MEM mutex is not already held, obtain it now. The mutex -** will already be held (obtained by code in malloc.c) if -** sqlite3GlobalConfig.bMemStat is true. +** Obtain or release the mutex needed to access global data structures. */ static void memsys5Enter(void){ sqlite3_mutex_enter(mem5.mutex); @@ -17718,17 +22330,15 @@ static void memsys5Leave(void){ } /* -** Return the size of an outstanding allocation, in bytes. The -** size returned omits the 8-byte header overhead. This only -** works for chunks that are currently checked out. +** Return the size of an outstanding allocation, in bytes. +** This only works for chunks that are currently checked out. */ static int memsys5Size(void *p){ - int iSize = 0; - if( p ){ - int i = (int)(((u8 *)p-mem5.zPool)/mem5.szAtom); - assert( i>=0 && i=0 && i0 ); + /* No more than 1GiB per allocation */ + if( nByte > 0x40000000 ) return 0; + +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) /* Keep track of the maximum allocation request. Even unfulfilled ** requests are counted */ if( (u32)nByte>mem5.maxRequest ){ mem5.maxRequest = nByte; } +#endif - /* Abort if the requested allocation size is larger than the largest - ** power of two that we can represent using 32-bit signed integers. - */ - if( nByte > 0x40000000 ){ - return 0; - } /* Round nByte up to the next valid power of two */ - for(iFullSz=mem5.szAtom, iLogsize=0; iFullSzLOGMAX ){ testcase( sqlite3GlobalConfig.xLog!=0 ); sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes", nByte); @@ -17789,6 +22398,7 @@ static void *memsys5MallocUnsafe(int nByte){ } mem5.aCtrl[i] = iLogsize; +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) /* Update allocator performance statistics. */ mem5.nAlloc++; mem5.totalAlloc += iFullSz; @@ -17797,6 +22407,13 @@ static void *memsys5MallocUnsafe(int nByte){ mem5.currentOut += iFullSz; if( mem5.maxCount0 ); assert( mem5.currentOut>=(size*mem5.szAtom) ); mem5.currentCount--; mem5.currentOut -= size*mem5.szAtom; assert( mem5.currentOut>0 || mem5.currentCount==0 ); assert( mem5.currentCount>0 || mem5.currentOut==0 ); +#endif mem5.aCtrl[iBlock] = CTRL_FREE | iLogsize; while( ALWAYS(iLogsize>iLogsize) & 1 ){ iBuddy = iBlock - size; + assert( iBuddy>=0 ); }else{ iBuddy = iBlock + size; + if( iBuddy>=mem5.nBlock ) break; } - assert( iBuddy>=0 ); - if( (iBuddy+(1<mem5.nBlock ) break; if( mem5.aCtrl[iBuddy]!=(CTRL_FREE | iLogsize) ) break; memsys5Unlink(iBuddy, iLogsize); iLogsize++; @@ -17855,6 +22475,13 @@ static void memsys5FreeUnsafe(void *pOld){ } size *= 2; } + +#ifdef SQLITE_DEBUG + /* Overwrite freed memory with the 0x55 bit pattern to verify that it is + ** not used after being freed */ + memset(&mem5.zPool[iBlock*mem5.szAtom], 0x55, size); +#endif + memsys5Link(iBlock, iLogsize); } @@ -17909,13 +22536,11 @@ static void *memsys5Realloc(void *pPrior, int nBytes){ if( nBytes<=nOld ){ return pPrior; } - memsys5Enter(); - p = memsys5MallocUnsafe(nBytes); + p = memsys5Malloc(nBytes); if( p ){ memcpy(p, pPrior, nOld); - memsys5FreeUnsafe(pPrior); + memsys5Free(pPrior); } - memsys5Leave(); return p; } @@ -18102,6 +22727,7 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys5(void){ ** ** This file contains code that is common across all mutex implementations. */ +/* #include "sqliteInt.h" */ #if defined(SQLITE_DEBUG) && !defined(SQLITE_MUTEX_OMIT) /* @@ -18110,7 +22736,7 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys5(void){ ** allocate a mutex while the system is uninitialized. */ static SQLITE_WSD int mutexIsInit = 0; -#endif /* SQLITE_DEBUG */ +#endif /* SQLITE_DEBUG && !defined(SQLITE_MUTEX_OMIT) */ #ifndef SQLITE_MUTEX_OMIT @@ -18133,11 +22759,18 @@ SQLITE_PRIVATE int sqlite3MutexInit(void){ }else{ pFrom = sqlite3NoopMutex(); } - memcpy(pTo, pFrom, offsetof(sqlite3_mutex_methods, xMutexAlloc)); - memcpy(&pTo->xMutexFree, &pFrom->xMutexFree, - sizeof(*pTo) - offsetof(sqlite3_mutex_methods, xMutexFree)); + pTo->xMutexInit = pFrom->xMutexInit; + pTo->xMutexEnd = pFrom->xMutexEnd; + pTo->xMutexFree = pFrom->xMutexFree; + pTo->xMutexEnter = pFrom->xMutexEnter; + pTo->xMutexTry = pFrom->xMutexTry; + pTo->xMutexLeave = pFrom->xMutexLeave; + pTo->xMutexHeld = pFrom->xMutexHeld; + pTo->xMutexNotheld = pFrom->xMutexNotheld; + sqlite3MemoryBarrier(); pTo->xMutexAlloc = pFrom->xMutexAlloc; } + assert( sqlite3GlobalConfig.mutex.xMutexInit ); rc = sqlite3GlobalConfig.mutex.xMutexInit(); #ifdef SQLITE_DEBUG @@ -18169,8 +22802,10 @@ SQLITE_PRIVATE int sqlite3MutexEnd(void){ */ SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int id){ #ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; + if( id<=SQLITE_MUTEX_RECURSIVE && sqlite3_initialize() ) return 0; + if( id>SQLITE_MUTEX_RECURSIVE && sqlite3MutexInit() ) return 0; #endif + assert( sqlite3GlobalConfig.mutex.xMutexAlloc ); return sqlite3GlobalConfig.mutex.xMutexAlloc(id); } @@ -18179,6 +22814,7 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3MutexAlloc(int id){ return 0; } assert( GLOBAL(int, mutexIsInit) ); + assert( sqlite3GlobalConfig.mutex.xMutexAlloc ); return sqlite3GlobalConfig.mutex.xMutexAlloc(id); } @@ -18187,6 +22823,7 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3MutexAlloc(int id){ */ SQLITE_API void sqlite3_mutex_free(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexFree ); sqlite3GlobalConfig.mutex.xMutexFree(p); } } @@ -18197,6 +22834,7 @@ SQLITE_API void sqlite3_mutex_free(sqlite3_mutex *p){ */ SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexEnter ); sqlite3GlobalConfig.mutex.xMutexEnter(p); } } @@ -18208,6 +22846,7 @@ SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex *p){ SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *p){ int rc = SQLITE_OK; if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexTry ); return sqlite3GlobalConfig.mutex.xMutexTry(p); } return rc; @@ -18221,6 +22860,7 @@ SQLITE_API int sqlite3_mutex_try(sqlite3_mutex *p){ */ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexLeave ); sqlite3GlobalConfig.mutex.xMutexLeave(p); } } @@ -18231,9 +22871,11 @@ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex *p){ ** intended for use inside assert() statements. */ SQLITE_API int sqlite3_mutex_held(sqlite3_mutex *p){ + assert( p==0 || sqlite3GlobalConfig.mutex.xMutexHeld ); return p==0 || sqlite3GlobalConfig.mutex.xMutexHeld(p); } SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){ + assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld ); return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p); } #endif @@ -18269,6 +22911,7 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex *p){ ** that does error checking on mutexes to make sure they are being ** called correctly. */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_MUTEX_OMIT @@ -18350,7 +22993,7 @@ static int debugMutexEnd(void){ return SQLITE_OK; } ** that means that a mutex could not be allocated. */ static sqlite3_mutex *debugMutexAlloc(int id){ - static sqlite3_debug_mutex aStatic[6]; + static sqlite3_debug_mutex aStatic[SQLITE_MUTEX_STATIC_VFS3 - 1]; sqlite3_debug_mutex *pNew = 0; switch( id ){ case SQLITE_MUTEX_FAST: @@ -18363,8 +23006,12 @@ static sqlite3_mutex *debugMutexAlloc(int id){ break; } default: { - assert( id-2 >= 0 ); - assert( id-2 < (int)(sizeof(aStatic)/sizeof(aStatic[0])) ); +#ifdef SQLITE_ENABLE_API_ARMOR + if( id-2<0 || id-2>=ArraySize(aStatic) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif pNew = &aStatic[id-2]; pNew->id = id; break; @@ -18379,8 +23026,13 @@ static sqlite3_mutex *debugMutexAlloc(int id){ static void debugMutexFree(sqlite3_mutex *pX){ sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; assert( p->cnt==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - sqlite3_free(p); + if( p->id==SQLITE_MUTEX_RECURSIVE || p->id==SQLITE_MUTEX_FAST ){ + sqlite3_free(p); + }else{ +#ifdef SQLITE_ENABLE_API_ARMOR + (void)SQLITE_MISUSE_BKPT; +#endif + } } /* @@ -18463,6 +23115,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ ************************************************************************* ** This file contains the C functions that implement mutexes for pthreads */ +/* #include "sqliteInt.h" */ /* ** The code in this file is only used if we are compiling threadsafe @@ -18491,15 +23144,19 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ */ struct sqlite3_mutex { pthread_mutex_t mutex; /* Mutex controlling the lock */ -#if SQLITE_MUTEX_NREF +#if SQLITE_MUTEX_NREF || defined(SQLITE_ENABLE_API_ARMOR) int id; /* Mutex type */ +#endif +#if SQLITE_MUTEX_NREF volatile int nRef; /* Number of entrances */ volatile pthread_t owner; /* Thread that is within this mutex */ int trace; /* True to trace changes */ #endif }; #if SQLITE_MUTEX_NREF -#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0, 0, (pthread_t)0, 0 } +#define SQLITE3_MUTEX_INITIALIZER {PTHREAD_MUTEX_INITIALIZER,0,0,(pthread_t)0,0} +#elif defined(SQLITE_ENABLE_API_ARMOR) +#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0 } #else #define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER } #endif @@ -18529,6 +23186,19 @@ static int pthreadMutexNotheld(sqlite3_mutex *p){ } #endif +/* +** Try to provide a memory barrier operation, needed for initialization +** and also for the implementation of xShmBarrier in the VFS in cases +** where SQLite is compiled without mutexes. +*/ +SQLITE_PRIVATE void sqlite3MemoryBarrier(void){ +#if defined(SQLITE_MEMORY_BARRIER) + SQLITE_MEMORY_BARRIER; +#elif defined(__GNUC__) && GCC_VERSION>=4001000 + __sync_synchronize(); +#endif +} + /* ** Initialize and deinitialize the mutex subsystem. */ @@ -18547,10 +23217,16 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; } **
  • SQLITE_MUTEX_RECURSIVE **
  • SQLITE_MUTEX_STATIC_MASTER **
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 +**
  • SQLITE_MUTEX_STATIC_OPEN **
  • SQLITE_MUTEX_STATIC_PRNG **
  • SQLITE_MUTEX_STATIC_LRU **
  • SQLITE_MUTEX_STATIC_PMEM +**
  • SQLITE_MUTEX_STATIC_APP1 +**
  • SQLITE_MUTEX_STATIC_APP2 +**
  • SQLITE_MUTEX_STATIC_APP3 +**
  • SQLITE_MUTEX_STATIC_VFS1 +**
  • SQLITE_MUTEX_STATIC_VFS2 +**
  • SQLITE_MUTEX_STATIC_VFS3 ** ** ** The first two constants cause sqlite3_mutex_alloc() to create @@ -18579,6 +23255,12 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; } */ static sqlite3_mutex *pthreadMutexAlloc(int iType){ static sqlite3_mutex staticMutexes[] = { + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, @@ -18602,9 +23284,6 @@ static sqlite3_mutex *pthreadMutexAlloc(int iType){ pthread_mutexattr_settype(&recursiveAttr, PTHREAD_MUTEX_RECURSIVE); pthread_mutex_init(&p->mutex, &recursiveAttr); pthread_mutexattr_destroy(&recursiveAttr); -#endif -#if SQLITE_MUTEX_NREF - p->id = iType; #endif } break; @@ -18612,23 +23291,24 @@ static sqlite3_mutex *pthreadMutexAlloc(int iType){ case SQLITE_MUTEX_FAST: { p = sqlite3MallocZero( sizeof(*p) ); if( p ){ -#if SQLITE_MUTEX_NREF - p->id = iType; -#endif pthread_mutex_init(&p->mutex, 0); } break; } default: { - assert( iType-2 >= 0 ); - assert( iType-2 < ArraySize(staticMutexes) ); - p = &staticMutexes[iType-2]; -#if SQLITE_MUTEX_NREF - p->id = iType; +#ifdef SQLITE_ENABLE_API_ARMOR + if( iType-2<0 || iType-2>=ArraySize(staticMutexes) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } #endif + p = &staticMutexes[iType-2]; break; } } +#if SQLITE_MUTEX_NREF || defined(SQLITE_ENABLE_API_ARMOR) + if( p ) p->id = iType; +#endif return p; } @@ -18640,9 +23320,18 @@ static sqlite3_mutex *pthreadMutexAlloc(int iType){ */ static void pthreadMutexFree(sqlite3_mutex *p){ assert( p->nRef==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - pthread_mutex_destroy(&p->mutex); - sqlite3_free(p); +#if SQLITE_ENABLE_API_ARMOR + if( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ) +#endif + { + pthread_mutex_destroy(&p->mutex); + sqlite3_free(p); + } +#ifdef SQLITE_ENABLE_API_ARMOR + else{ + (void)SQLITE_MISUSE_BKPT; + } +#endif } /* @@ -18814,12 +23503,315 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file contains the C functions that implement mutexes for win32 +** This file contains the C functions that implement mutexes for Win32. */ +/* #include "sqliteInt.h" */ + +#if SQLITE_OS_WIN +/* +** Include code that is common to all os_*.c files +*/ +/************** Include os_common.h in the middle of mutex_w32.c *************/ +/************** Begin file os_common.h ***************************************/ +/* +** 2004 May 22 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains macros and a little bit of code that is common to +** all of the platform-specific files (os_*.c) and is #included into those +** files. +** +** This file should be #included by the os_*.c files only. It is not a +** general purpose header file. +*/ +#ifndef _OS_COMMON_H_ +#define _OS_COMMON_H_ + +/* +** At least two bugs have slipped in because we changed the MEMORY_DEBUG +** macro to SQLITE_DEBUG and some older makefiles have not yet made the +** switch. The following code should catch this problem at compile-time. +*/ +#ifdef MEMORY_DEBUG +# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." +#endif + +/* +** Macros for performance tracing. Normally turned off. Only works +** on i486 hardware. +*/ +#ifdef SQLITE_PERFORMANCE_TRACE + +/* +** hwtime.h contains inline assembler code for implementing +** high-performance timing routines. +*/ +/************** Include hwtime.h in the middle of os_common.h ****************/ +/************** Begin file hwtime.h ******************************************/ +/* +** 2008 May 27 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains inline asm code for retrieving "high-performance" +** counters for x86 class CPUs. +*/ +#ifndef SQLITE_HWTIME_H +#define SQLITE_HWTIME_H + +/* +** The following routine only works on pentium-class (or newer) processors. +** It uses the RDTSC opcode to read the cycle count value out of the +** processor and returns that value. This can be used for high-res +** profiling. +*/ +#if (defined(__GNUC__) || defined(_MSC_VER)) && \ + (defined(i386) || defined(__i386__) || defined(_M_IX86)) + + #if defined(__GNUC__) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned int lo, hi; + __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); + return (sqlite_uint64)hi << 32 | lo; + } + + #elif defined(_MSC_VER) + + __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ + __asm { + rdtsc + ret ; return value at EDX:EAX + } + } + + #endif + +#elif (defined(__GNUC__) && defined(__x86_64__)) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned long val; + __asm__ __volatile__ ("rdtsc" : "=A" (val)); + return val; + } + +#elif (defined(__GNUC__) && defined(__ppc__)) + + __inline__ sqlite_uint64 sqlite3Hwtime(void){ + unsigned long long retval; + unsigned long junk; + __asm__ __volatile__ ("\n\ + 1: mftbu %1\n\ + mftb %L0\n\ + mftbu %0\n\ + cmpw %0,%1\n\ + bne 1b" + : "=r" (retval), "=r" (junk)); + return retval; + } + +#else + + #error Need implementation of sqlite3Hwtime() for your platform. + + /* + ** To compile without implementing sqlite3Hwtime() for your platform, + ** you can remove the above #error and use the following + ** stub function. You will lose timing support for many + ** of the debugging and testing utilities, but it should at + ** least compile and run. + */ +SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } + +#endif + +#endif /* !defined(SQLITE_HWTIME_H) */ + +/************** End of hwtime.h **********************************************/ +/************** Continuing where we left off in os_common.h ******************/ + +static sqlite_uint64 g_start; +static sqlite_uint64 g_elapsed; +#define TIMER_START g_start=sqlite3Hwtime() +#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start +#define TIMER_ELAPSED g_elapsed +#else +#define TIMER_START +#define TIMER_END +#define TIMER_ELAPSED ((sqlite_uint64)0) +#endif + +/* +** If we compile with the SQLITE_TEST macro set, then the following block +** of code will give us the ability to simulate a disk I/O error. This +** is used for testing the I/O recovery logic. +*/ +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_io_error_hit; +SQLITE_API extern int sqlite3_io_error_hardhit; +SQLITE_API extern int sqlite3_io_error_pending; +SQLITE_API extern int sqlite3_io_error_persist; +SQLITE_API extern int sqlite3_io_error_benign; +SQLITE_API extern int sqlite3_diskfull_pending; +SQLITE_API extern int sqlite3_diskfull; +#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) +#define SimulateIOError(CODE) \ + if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ + || sqlite3_io_error_pending-- == 1 ) \ + { local_ioerr(); CODE; } +static void local_ioerr(){ + IOTRACE(("IOERR\n")); + sqlite3_io_error_hit++; + if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; +} +#define SimulateDiskfullError(CODE) \ + if( sqlite3_diskfull_pending ){ \ + if( sqlite3_diskfull_pending == 1 ){ \ + local_ioerr(); \ + sqlite3_diskfull = 1; \ + sqlite3_io_error_hit = 1; \ + CODE; \ + }else{ \ + sqlite3_diskfull_pending--; \ + } \ + } +#else +#define SimulateIOErrorBenign(X) +#define SimulateIOError(A) +#define SimulateDiskfullError(A) +#endif /* defined(SQLITE_TEST) */ + +/* +** When testing, keep a count of the number of open files. +*/ +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_open_file_count; +#define OpenCounter(X) sqlite3_open_file_count+=(X) +#else +#define OpenCounter(X) +#endif /* defined(SQLITE_TEST) */ + +#endif /* !defined(_OS_COMMON_H_) */ + +/************** End of os_common.h *******************************************/ +/************** Continuing where we left off in mutex_w32.c ******************/ + +/* +** Include the header file for the Windows VFS. +*/ +/************** Include os_win.h in the middle of mutex_w32.c ****************/ +/************** Begin file os_win.h ******************************************/ +/* +** 2013 November 25 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file contains code that is specific to Windows. +*/ +#ifndef SQLITE_OS_WIN_H +#define SQLITE_OS_WIN_H + +/* +** Include the primary Windows SDK header file. +*/ +#include "windows.h" + +#ifdef __CYGWIN__ +# include +# include /* amalgamator: dontcache */ +#endif + +/* +** Determine if we are dealing with Windows NT. +** +** We ought to be able to determine if we are compiling for Windows 9x or +** Windows NT using the _WIN32_WINNT macro as follows: +** +** #if defined(_WIN32_WINNT) +** # define SQLITE_OS_WINNT 1 +** #else +** # define SQLITE_OS_WINNT 0 +** #endif +** +** However, Visual Studio 2005 does not set _WIN32_WINNT by default, as +** it ought to, so the above test does not work. We'll just assume that +** everything is Windows NT unless the programmer explicitly says otherwise +** by setting SQLITE_OS_WINNT to 0. +*/ +#if SQLITE_OS_WIN && !defined(SQLITE_OS_WINNT) +# define SQLITE_OS_WINNT 1 +#endif + +/* +** Determine if we are dealing with Windows CE - which has a much reduced +** API. +*/ +#if defined(_WIN32_WCE) +# define SQLITE_OS_WINCE 1 +#else +# define SQLITE_OS_WINCE 0 +#endif + +/* +** Determine if we are dealing with WinRT, which provides only a subset of +** the full Win32 API. +*/ +#if !defined(SQLITE_OS_WINRT) +# define SQLITE_OS_WINRT 0 +#endif + +/* +** For WinCE, some API function parameters do not appear to be declared as +** volatile. +*/ +#if SQLITE_OS_WINCE +# define SQLITE_WIN32_VOLATILE +#else +# define SQLITE_WIN32_VOLATILE volatile +#endif + +/* +** For some Windows sub-platforms, the _beginthreadex() / _endthreadex() +** functions are not available (e.g. those not using MSVC, Cygwin, etc). +*/ +#if SQLITE_OS_WIN && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && \ + SQLITE_THREADSAFE>0 && !defined(__CYGWIN__) +# define SQLITE_OS_WIN_THREADS 1 +#else +# define SQLITE_OS_WIN_THREADS 0 +#endif + +#endif /* SQLITE_OS_WIN_H */ + +/************** End of os_win.h **********************************************/ +/************** Continuing where we left off in mutex_w32.c ******************/ +#endif /* ** The code in this file is only used if we are compiling multithreaded -** on a win32 system. +** on a Win32 system. */ #ifdef SQLITE_MUTEX_W32 @@ -18832,48 +23824,22 @@ struct sqlite3_mutex { #ifdef SQLITE_DEBUG volatile int nRef; /* Number of enterances */ volatile DWORD owner; /* Thread holding this mutex */ - int trace; /* True to trace changes */ + volatile int trace; /* True to trace changes */ #endif }; -#define SQLITE_W32_MUTEX_INITIALIZER { 0 } -#ifdef SQLITE_DEBUG -#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0, 0L, (DWORD)0, 0 } -#else -#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0 } -#endif /* -** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, -** or WinCE. Return false (zero) for Win95, Win98, or WinME. -** -** Here is an interesting observation: Win95, Win98, and WinME lack -** the LockFileEx() API. But we can still statically link against that -** API as long as we don't call it win running Win95/98/ME. A call to -** this routine is used to determine if the host is Win95/98/ME or -** WinNT/2K/XP so that we will know whether or not we can safely call -** the LockFileEx() API. -** -** mutexIsNT() is only used for the TryEnterCriticalSection() API call, -** which is only available if your application was compiled with -** _WIN32_WINNT defined to a value >= 0x0400. Currently, the only -** call to TryEnterCriticalSection() is #ifdef'ed out, so #ifdef -** this out as well. +** These are the initializer values used when declaring a "static" mutex +** on Win32. It should be noted that all mutexes require initialization +** on the Win32 platform. */ -#if 0 -#if SQLITE_OS_WINCE || SQLITE_OS_WINRT -# define mutexIsNT() (1) +#define SQLITE_W32_MUTEX_INITIALIZER { 0 } + +#ifdef SQLITE_DEBUG +#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0, \ + 0L, (DWORD)0, 0 } #else - static int mutexIsNT(void){ - static int osType = 0; - if( osType==0 ){ - OSVERSIONINFO sInfo; - sInfo.dwOSVersionInfoSize = sizeof(sInfo); - GetVersionEx(&sInfo); - osType = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1; - } - return osType==2; - } -#endif /* SQLITE_OS_WINCE || SQLITE_OS_WINRT */ +#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0 } #endif #ifdef SQLITE_DEBUG @@ -18884,20 +23850,44 @@ struct sqlite3_mutex { static int winMutexHeld(sqlite3_mutex *p){ return p->nRef!=0 && p->owner==GetCurrentThreadId(); } + static int winMutexNotheld2(sqlite3_mutex *p, DWORD tid){ return p->nRef==0 || p->owner!=tid; } + static int winMutexNotheld(sqlite3_mutex *p){ - DWORD tid = GetCurrentThreadId(); + DWORD tid = GetCurrentThreadId(); return winMutexNotheld2(p, tid); } #endif +/* +** Try to provide a memory barrier operation, needed for initialization +** and also for the xShmBarrier method of the VFS in cases when SQLite is +** compiled without mutexes (SQLITE_THREADSAFE=0). +*/ +SQLITE_PRIVATE void sqlite3MemoryBarrier(void){ +#if defined(SQLITE_MEMORY_BARRIER) + SQLITE_MEMORY_BARRIER; +#elif defined(__GNUC__) + __sync_synchronize(); +#elif MSVC_VERSION>=1300 + _ReadWriteBarrier(); +#elif defined(MemoryBarrier) + MemoryBarrier(); +#endif +} /* ** Initialize and deinitialize the mutex subsystem. */ -static sqlite3_mutex winMutex_staticMutexes[6] = { +static sqlite3_mutex winMutex_staticMutexes[] = { + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, + SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, @@ -18905,17 +23895,20 @@ static sqlite3_mutex winMutex_staticMutexes[6] = { SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER }; -static int winMutex_isInit = 0; -/* As winMutexInit() and winMutexEnd() are called as part -** of the sqlite3_initialize and sqlite3_shutdown() -** processing, the "interlocked" magic is probably not -** strictly necessary. -*/ -static LONG winMutex_lock = 0; +static int winMutex_isInit = 0; +static int winMutex_isNt = -1; /* <0 means "need to query" */ + +/* As the winMutexInit() and winMutexEnd() functions are called as part +** of the sqlite3_initialize() and sqlite3_shutdown() processing, the +** "interlocked" magic used here is probably not strictly necessary. +*/ +static LONG SQLITE_WIN32_VOLATILE winMutex_lock = 0; + +SQLITE_API int sqlite3_win32_is_nt(void); /* os_win.c */ SQLITE_API void sqlite3_win32_sleep(DWORD milliseconds); /* os_win.c */ -static int winMutexInit(void){ +static int winMutexInit(void){ /* The first to increment to 1 does actual initialization */ if( InterlockedCompareExchange(&winMutex_lock, 1, 0)==0 ){ int i; @@ -18928,16 +23921,17 @@ static int winMutexInit(void){ } winMutex_isInit = 1; }else{ - /* Someone else is in the process of initing the static mutexes */ + /* Another thread is (in the process of) initializing the static + ** mutexes */ while( !winMutex_isInit ){ sqlite3_win32_sleep(1); } } - return SQLITE_OK; + return SQLITE_OK; } -static int winMutexEnd(void){ - /* The first to decrement to 0 does actual shutdown +static int winMutexEnd(void){ + /* The first to decrement to 0 does actual shutdown ** (which should be the last to shutdown.) */ if( InterlockedCompareExchange(&winMutex_lock, 0, 1)==1 ){ if( winMutex_isInit==1 ){ @@ -18948,7 +23942,7 @@ static int winMutexEnd(void){ winMutex_isInit = 0; } } - return SQLITE_OK; + return SQLITE_OK; } /* @@ -18963,10 +23957,16 @@ static int winMutexEnd(void){ **
  • SQLITE_MUTEX_RECURSIVE **
  • SQLITE_MUTEX_STATIC_MASTER **
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 +**
  • SQLITE_MUTEX_STATIC_OPEN **
  • SQLITE_MUTEX_STATIC_PRNG **
  • SQLITE_MUTEX_STATIC_LRU **
  • SQLITE_MUTEX_STATIC_PMEM +**
  • SQLITE_MUTEX_STATIC_APP1 +**
  • SQLITE_MUTEX_STATIC_APP2 +**
  • SQLITE_MUTEX_STATIC_APP3 +**
  • SQLITE_MUTEX_STATIC_VFS1 +**
  • SQLITE_MUTEX_STATIC_VFS2 +**
  • SQLITE_MUTEX_STATIC_VFS3 ** ** ** The first two constants cause sqlite3_mutex_alloc() to create @@ -18989,7 +23989,7 @@ static int winMutexEnd(void){ ** ** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. But for the static +** returns a different mutex on every call. But for the static ** mutex types, the same mutex is returned on every call that has ** the same type number. */ @@ -19000,9 +24000,12 @@ static sqlite3_mutex *winMutexAlloc(int iType){ case SQLITE_MUTEX_FAST: case SQLITE_MUTEX_RECURSIVE: { p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ -#ifdef SQLITE_DEBUG + if( p ){ p->id = iType; +#ifdef SQLITE_DEBUG +#ifdef SQLITE_WIN32_MUTEX_TRACE_DYNAMIC + p->trace = 1; +#endif #endif #if SQLITE_OS_WINRT InitializeCriticalSectionEx(&p->mutex, 0, 0); @@ -19013,12 +24016,18 @@ static sqlite3_mutex *winMutexAlloc(int iType){ break; } default: { - assert( winMutex_isInit==1 ); - assert( iType-2 >= 0 ); - assert( iType-2 < ArraySize(winMutex_staticMutexes) ); +#ifdef SQLITE_ENABLE_API_ARMOR + if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif p = &winMutex_staticMutexes[iType-2]; -#ifdef SQLITE_DEBUG p->id = iType; +#ifdef SQLITE_DEBUG +#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC + p->trace = 1; +#endif #endif break; } @@ -19035,9 +24044,14 @@ static sqlite3_mutex *winMutexAlloc(int iType){ static void winMutexFree(sqlite3_mutex *p){ assert( p ); assert( p->nRef==0 && p->owner==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - DeleteCriticalSection(&p->mutex); - sqlite3_free(p); + if( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ){ + DeleteCriticalSection(&p->mutex); + sqlite3_free(p); + }else{ +#ifdef SQLITE_ENABLE_API_ARMOR + (void)SQLITE_MISUSE_BKPT; +#endif + } } /* @@ -19052,30 +24066,39 @@ static void winMutexFree(sqlite3_mutex *p){ ** more than once, the behavior is undefined. */ static void winMutexEnter(sqlite3_mutex *p){ -#ifdef SQLITE_DEBUG - DWORD tid = GetCurrentThreadId(); - assert( p->id==SQLITE_MUTEX_RECURSIVE || winMutexNotheld2(p, tid) ); +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) + DWORD tid = GetCurrentThreadId(); #endif +#ifdef SQLITE_DEBUG + assert( p ); + assert( p->id==SQLITE_MUTEX_RECURSIVE || winMutexNotheld2(p, tid) ); +#else + assert( p ); +#endif + assert( winMutex_isInit==1 ); EnterCriticalSection(&p->mutex); #ifdef SQLITE_DEBUG assert( p->nRef>0 || p->owner==0 ); - p->owner = tid; + p->owner = tid; p->nRef++; if( p->trace ){ - printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + OSTRACE(("ENTER-MUTEX tid=%lu, mutex=%p (%d), nRef=%d\n", + tid, p, p->trace, p->nRef)); } #endif } + static int winMutexTry(sqlite3_mutex *p){ -#ifndef NDEBUG - DWORD tid = GetCurrentThreadId(); +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) + DWORD tid = GetCurrentThreadId(); #endif int rc = SQLITE_BUSY; + assert( p ); assert( p->id==SQLITE_MUTEX_RECURSIVE || winMutexNotheld2(p, tid) ); /* ** The sqlite3_mutex_try() routine is very rarely used, and when it ** is used it is merely an optimization. So it is OK for it to always - ** fail. + ** fail. ** ** The TryEnterCriticalSection() interface is only available on WinNT. ** And some windows compilers complain if you try to use it without @@ -19083,18 +24106,27 @@ static int winMutexTry(sqlite3_mutex *p){ ** For that reason, we will omit this optimization for now. See ** ticket #2685. */ -#if 0 - if( mutexIsNT() && TryEnterCriticalSection(&p->mutex) ){ +#if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0400 + assert( winMutex_isInit==1 ); + assert( winMutex_isNt>=-1 && winMutex_isNt<=1 ); + if( winMutex_isNt<0 ){ + winMutex_isNt = sqlite3_win32_is_nt(); + } + assert( winMutex_isNt==0 || winMutex_isNt==1 ); + if( winMutex_isNt && TryEnterCriticalSection(&p->mutex) ){ +#ifdef SQLITE_DEBUG p->owner = tid; p->nRef++; +#endif rc = SQLITE_OK; } #else UNUSED_PARAMETER(p); #endif #ifdef SQLITE_DEBUG - if( rc==SQLITE_OK && p->trace ){ - printf("try mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + if( p->trace ){ + OSTRACE(("TRY-MUTEX tid=%lu, mutex=%p (%d), owner=%lu, nRef=%d, rc=%s\n", + tid, p, p->trace, p->owner, p->nRef, sqlite3ErrName(rc))); } #endif return rc; @@ -19107,18 +24139,23 @@ static int winMutexTry(sqlite3_mutex *p){ ** is not currently allocated. SQLite will never do either. */ static void winMutexLeave(sqlite3_mutex *p){ -#ifndef NDEBUG +#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) DWORD tid = GetCurrentThreadId(); +#endif + assert( p ); +#ifdef SQLITE_DEBUG assert( p->nRef>0 ); assert( p->owner==tid ); p->nRef--; if( p->nRef==0 ) p->owner = 0; assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE ); #endif + assert( winMutex_isInit==1 ); LeaveCriticalSection(&p->mutex); #ifdef SQLITE_DEBUG if( p->trace ){ - printf("leave mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); + OSTRACE(("LEAVE-MUTEX tid=%lu, mutex=%p (%d), nRef=%d\n", + tid, p, p->trace, p->nRef)); } #endif } @@ -19140,9 +24177,9 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ 0 #endif }; - return &sMutex; } + #endif /* SQLITE_MUTEX_W32 */ /************** End of mutex_w32.c *******************************************/ @@ -19161,6 +24198,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ ** ** Memory allocation functions used throughout sqlite. */ +/* #include "sqliteInt.h" */ /* #include */ /* @@ -19193,16 +24231,7 @@ typedef struct ScratchFreeslot { */ static SQLITE_WSD struct Mem0Global { sqlite3_mutex *mutex; /* Mutex to serialize access */ - - /* - ** The alarm callback and its arguments. The mem0.mutex lock will - ** be held while the callback is running. Recursive calls into - ** the memory subsystem are allowed, but no new callbacks will be - ** issued. - */ - sqlite3_int64 alarmThreshold; - void (*alarmCallback)(void*, sqlite3_int64,int); - void *alarmArg; + sqlite3_int64 alarmThreshold; /* The soft heap limit */ /* ** Pointers to the end of sqlite3GlobalConfig.pScratch memory @@ -19219,54 +24248,32 @@ static SQLITE_WSD struct Mem0Global { ** sqlite3_soft_heap_limit() setting. */ int nearlyFull; -} mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 }; +} mem0 = { 0, 0, 0, 0, 0, 0 }; #define mem0 GLOBAL(struct Mem0Global, mem0) /* -** This routine runs when the memory allocator sees that the -** total memory allocation is about to exceed the soft heap -** limit. +** Return the memory allocator mutex. sqlite3_status() needs it. */ -static void softHeapLimitEnforcer( - void *NotUsed, - sqlite3_int64 NotUsed2, - int allocSize -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - sqlite3_release_memory(allocSize); -} - -/* -** Change the alarm callback -*/ -static int sqlite3MemoryAlarm( - void(*xCallback)(void *pArg, sqlite3_int64 used,int N), - void *pArg, - sqlite3_int64 iThreshold -){ - int nUsed; - sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; - mem0.alarmThreshold = iThreshold; - nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed); - sqlite3_mutex_leave(mem0.mutex); - return SQLITE_OK; +SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void){ + return mem0.mutex; } #ifndef SQLITE_OMIT_DEPRECATED /* -** Deprecated external interface. Internal/core SQLite code -** should call sqlite3MemoryAlarm. +** Deprecated external interface. It used to set an alarm callback +** that was invoked when memory usage grew too large. Now it is a +** no-op. */ SQLITE_API int sqlite3_memory_alarm( void(*xCallback)(void *pArg, sqlite3_int64 used,int N), void *pArg, sqlite3_int64 iThreshold ){ - return sqlite3MemoryAlarm(xCallback, pArg, iThreshold); + (void)xCallback; + (void)pArg; + (void)iThreshold; + return SQLITE_OK; } #endif @@ -19277,19 +24284,21 @@ SQLITE_API int sqlite3_memory_alarm( SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){ sqlite3_int64 priorLimit; sqlite3_int64 excess; + sqlite3_int64 nUsed; #ifndef SQLITE_OMIT_AUTOINIT int rc = sqlite3_initialize(); if( rc ) return -1; #endif sqlite3_mutex_enter(mem0.mutex); priorLimit = mem0.alarmThreshold; - sqlite3_mutex_leave(mem0.mutex); - if( n<0 ) return priorLimit; - if( n>0 ){ - sqlite3MemoryAlarm(softHeapLimitEnforcer, 0, n); - }else{ - sqlite3MemoryAlarm(0, 0, 0); + if( n<0 ){ + sqlite3_mutex_leave(mem0.mutex); + return priorLimit; } + mem0.alarmThreshold = n; + nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); + mem0.nearlyFull = (n>0 && n<=nUsed); + sqlite3_mutex_leave(mem0.mutex); excess = sqlite3_memory_used() - n; if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff)); return priorLimit; @@ -19303,13 +24312,12 @@ SQLITE_API void sqlite3_soft_heap_limit(int n){ ** Initialize the memory allocation subsystem. */ SQLITE_PRIVATE int sqlite3MallocInit(void){ + int rc; if( sqlite3GlobalConfig.m.xMalloc==0 ){ sqlite3MemSetDefault(); } memset(&mem0, 0, sizeof(mem0)); - if( sqlite3GlobalConfig.bCoreMutex ){ - mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); - } + mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); if( sqlite3GlobalConfig.pScratch && sqlite3GlobalConfig.szScratch>=100 && sqlite3GlobalConfig.nScratch>0 ){ int i, n, sz; @@ -19333,12 +24341,13 @@ SQLITE_PRIVATE int sqlite3MallocInit(void){ sqlite3GlobalConfig.nScratch = 0; } if( sqlite3GlobalConfig.pPage==0 || sqlite3GlobalConfig.szPage<512 - || sqlite3GlobalConfig.nPage<1 ){ + || sqlite3GlobalConfig.nPage<=0 ){ sqlite3GlobalConfig.pPage = 0; sqlite3GlobalConfig.szPage = 0; - sqlite3GlobalConfig.nPage = 0; } - return sqlite3GlobalConfig.m.xInit(sqlite3GlobalConfig.m.pAppData); + rc = sqlite3GlobalConfig.m.xInit(sqlite3GlobalConfig.m.pAppData); + if( rc!=SQLITE_OK ) memset(&mem0, 0, sizeof(mem0)); + return rc; } /* @@ -19364,10 +24373,8 @@ SQLITE_PRIVATE void sqlite3MallocEnd(void){ ** Return the amount of memory currently checked out. */ SQLITE_API sqlite3_int64 sqlite3_memory_used(void){ - int n, mx; - sqlite3_int64 res; - sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0); - res = (sqlite3_int64)n; /* Work around bug in Borland C. Ticket #3216 */ + sqlite3_int64 res, mx; + sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &res, &mx, 0); return res; } @@ -19377,44 +24384,41 @@ SQLITE_API sqlite3_int64 sqlite3_memory_used(void){ ** or since the most recent reset. */ SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag){ - int n, mx; - sqlite3_int64 res; - sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag); - res = (sqlite3_int64)mx; /* Work around bug in Borland C. Ticket #3216 */ - return res; + sqlite3_int64 res, mx; + sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &res, &mx, resetFlag); + return mx; } /* ** Trigger the alarm */ static void sqlite3MallocAlarm(int nByte){ - void (*xCallback)(void*,sqlite3_int64,int); - sqlite3_int64 nowUsed; - void *pArg; - if( mem0.alarmCallback==0 ) return; - xCallback = mem0.alarmCallback; - nowUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - pArg = mem0.alarmArg; - mem0.alarmCallback = 0; + if( mem0.alarmThreshold<=0 ) return; sqlite3_mutex_leave(mem0.mutex); - xCallback(pArg, nowUsed, nByte); + sqlite3_release_memory(nByte); sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; } /* ** Do a memory allocation with statistics and alarms. Assume the ** lock is already held. */ -static int mallocWithAlarm(int n, void **pp){ - int nFull; +static void mallocWithAlarm(int n, void **pp){ void *p; + int nFull; assert( sqlite3_mutex_held(mem0.mutex) ); + assert( n>0 ); + + /* In Firefox (circa 2017-02-08), xRoundup() is remapped to an internal + ** implementation of malloc_good_size(), which must be called in debug + ** mode and specifically when the DMD "Dark Matter Detector" is enabled + ** or else a crash results. Hence, do not attempt to optimize out the + ** following xRoundup() call. */ nFull = sqlite3GlobalConfig.m.xRoundup(n); - sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n); - if( mem0.alarmCallback!=0 ){ - int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); + + sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, n); + if( mem0.alarmThreshold>0 ){ + sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); if( nUsed >= mem0.alarmThreshold - nFull ){ mem0.nearlyFull = 1; sqlite3MallocAlarm(nFull); @@ -19424,29 +24428,26 @@ static int mallocWithAlarm(int n, void **pp){ } p = sqlite3GlobalConfig.m.xMalloc(nFull); #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT - if( p==0 && mem0.alarmCallback ){ + if( p==0 && mem0.alarmThreshold>0 ){ sqlite3MallocAlarm(nFull); p = sqlite3GlobalConfig.m.xMalloc(nFull); } #endif if( p ){ nFull = sqlite3MallocSize(p); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nFull); - sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, 1); + sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nFull); + sqlite3StatusUp(SQLITE_STATUS_MALLOC_COUNT, 1); } *pp = p; - return nFull; } /* ** Allocate memory. This routine is like sqlite3_malloc() except that it ** assumes the memory subsystem has already been initialized. */ -SQLITE_PRIVATE void *sqlite3Malloc(int n){ +SQLITE_PRIVATE void *sqlite3Malloc(u64 n){ void *p; - if( n<=0 /* IMP: R-65312-04917 */ - || n>=0x7fffff00 - ){ + if( n==0 || n>=0x7fffff00 ){ /* A memory allocation of a number of bytes which is near the maximum ** signed integer value might cause an integer overflow inside of the ** xMalloc(). Hence we limit the maximum size to 0x7fffff00, giving @@ -19455,12 +24456,12 @@ SQLITE_PRIVATE void *sqlite3Malloc(int n){ p = 0; }else if( sqlite3GlobalConfig.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); - mallocWithAlarm(n, &p); + mallocWithAlarm((int)n, &p); sqlite3_mutex_leave(mem0.mutex); }else{ - p = sqlite3GlobalConfig.m.xMalloc(n); + p = sqlite3GlobalConfig.m.xMalloc((int)n); } - assert( EIGHT_BYTE_ALIGNMENT(p) ); /* IMP: R-04675-44850 */ + assert( EIGHT_BYTE_ALIGNMENT(p) ); /* IMP: R-11148-40995 */ return p; } @@ -19470,6 +24471,12 @@ SQLITE_PRIVATE void *sqlite3Malloc(int n){ ** allocation. */ SQLITE_API void *sqlite3_malloc(int n){ +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return n<=0 ? 0 : sqlite3Malloc(n); +} +SQLITE_API void *sqlite3_malloc64(sqlite3_uint64 n){ #ifndef SQLITE_OMIT_AUTOINIT if( sqlite3_initialize() ) return 0; #endif @@ -19500,22 +24507,20 @@ SQLITE_PRIVATE void *sqlite3ScratchMalloc(int n){ assert( n>0 ); sqlite3_mutex_enter(mem0.mutex); + sqlite3StatusHighwater(SQLITE_STATUS_SCRATCH_SIZE, n); if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){ p = mem0.pScratchFree; mem0.pScratchFree = mem0.pScratchFree->pNext; mem0.nScratchFree--; - sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1); - sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n); + sqlite3StatusUp(SQLITE_STATUS_SCRATCH_USED, 1); sqlite3_mutex_leave(mem0.mutex); }else{ - if( sqlite3GlobalConfig.bMemstat ){ - sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n); - n = mallocWithAlarm(n, &p); - if( p ) sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, n); + sqlite3_mutex_leave(mem0.mutex); + p = sqlite3Malloc(n); + if( sqlite3GlobalConfig.bMemstat && p ){ + sqlite3_mutex_enter(mem0.mutex); + sqlite3StatusUp(SQLITE_STATUS_SCRATCH_OVERFLOW, sqlite3MallocSize(p)); sqlite3_mutex_leave(mem0.mutex); - }else{ - sqlite3_mutex_leave(mem0.mutex); - p = sqlite3GlobalConfig.m.xMalloc(n); } sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH); } @@ -19523,11 +24528,12 @@ SQLITE_PRIVATE void *sqlite3ScratchMalloc(int n){ #if SQLITE_THREADSAFE==0 && !defined(NDEBUG) - /* Verify that no more than two scratch allocations per thread - ** are outstanding at one time. (This is only checked in the - ** single-threaded case since checking in the multi-threaded case - ** would be much more complicated.) */ - assert( scratchAllocOut<=1 ); + /* EVIDENCE-OF: R-12970-05880 SQLite will not use more than one scratch + ** buffers per thread. + ** + ** This can only be checked in single-threaded mode. + */ + assert( scratchAllocOut==0 ); if( p ) scratchAllocOut++; #endif @@ -19545,7 +24551,7 @@ SQLITE_PRIVATE void sqlite3ScratchFree(void *p){ scratchAllocOut--; #endif - if( p>=sqlite3GlobalConfig.pScratch && p=db->lookaside.pStart && plookaside.pEnd; + return SQLITE_WITHIN(p, db->lookaside.pStart, db->lookaside.pEnd); } #else #define isLookaside(A,B) 0 @@ -19593,33 +24599,43 @@ static int isLookaside(sqlite3 *db, void *p){ */ SQLITE_PRIVATE int sqlite3MallocSize(void *p){ assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); return sqlite3GlobalConfig.m.xSize(p); } SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){ - assert( db!=0 ); - assert( sqlite3_mutex_held(db->mutex) ); - if( isLookaside(db, p) ){ - return db->lookaside.sz; - }else{ - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); - assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); + assert( p!=0 ); + if( db==0 || !isLookaside(db,p) ){ +#if SQLITE_DEBUG + if( db==0 ){ + assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); + }else{ + assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + } +#endif return sqlite3GlobalConfig.m.xSize(p); + }else{ + assert( sqlite3_mutex_held(db->mutex) ); + return db->lookaside.sz; } } +SQLITE_API sqlite3_uint64 sqlite3_msize(void *p){ + assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); + return p ? sqlite3GlobalConfig.m.xSize(p) : 0; +} /* ** Free memory previously obtained from sqlite3Malloc(). */ SQLITE_API void sqlite3_free(void *p){ if( p==0 ) return; /* IMP: R-49053-54554 */ - assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); + assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); if( sqlite3GlobalConfig.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -sqlite3MallocSize(p)); - sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1); + sqlite3StatusDown(SQLITE_STATUS_MEMORY_USED, sqlite3MallocSize(p)); + sqlite3StatusDown(SQLITE_STATUS_MALLOC_COUNT, 1); sqlite3GlobalConfig.m.xFree(p); sqlite3_mutex_leave(mem0.mutex); }else{ @@ -19627,6 +24643,14 @@ SQLITE_API void sqlite3_free(void *p){ } } +/* +** Add the size of memory allocation "p" to the count in +** *db->pnBytesFreed. +*/ +static SQLITE_NOINLINE void measureAllocationSize(sqlite3 *db, void *p){ + *db->pnBytesFreed += sqlite3DbMallocSize(db,p); +} + /* ** Free memory that might be associated with a particular database ** connection. @@ -19636,7 +24660,7 @@ SQLITE_PRIVATE void sqlite3DbFree(sqlite3 *db, void *p){ if( p==0 ) return; if( db ){ if( db->pnBytesFreed ){ - *db->pnBytesFreed += sqlite3DbMallocSize(db, p); + measureAllocationSize(db, p); return; } if( isLookaside(db, p) ){ @@ -19651,8 +24675,8 @@ SQLITE_PRIVATE void sqlite3DbFree(sqlite3 *db, void *p){ return; } } - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); sqlite3MemdebugSetType(p, MEMTYPE_HEAP); sqlite3_free(p); @@ -19661,14 +24685,16 @@ SQLITE_PRIVATE void sqlite3DbFree(sqlite3 *db, void *p){ /* ** Change the size of an existing memory allocation */ -SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){ +SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, u64 nBytes){ int nOld, nNew, nDiff; void *pNew; + assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) ); + assert( sqlite3MemdebugNoType(pOld, (u8)~MEMTYPE_HEAP) ); if( pOld==0 ){ - return sqlite3Malloc(nBytes); /* IMP: R-28354-25769 */ + return sqlite3Malloc(nBytes); /* IMP: R-04300-56712 */ } - if( nBytes<=0 ){ - sqlite3_free(pOld); /* IMP: R-31593-10574 */ + if( nBytes==0 ){ + sqlite3_free(pOld); /* IMP: R-26507-47431 */ return 0; } if( nBytes>=0x7fffff00 ){ @@ -19679,33 +24705,31 @@ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){ /* IMPLEMENTATION-OF: R-46199-30249 SQLite guarantees that the second ** argument to xRealloc is always a value returned by a prior call to ** xRoundup. */ - nNew = sqlite3GlobalConfig.m.xRoundup(nBytes); + nNew = sqlite3GlobalConfig.m.xRoundup((int)nBytes); if( nOld==nNew ){ pNew = pOld; }else if( sqlite3GlobalConfig.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); - sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, nBytes); + sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, (int)nBytes); nDiff = nNew - nOld; - if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >= + if( nDiff>0 && sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >= mem0.alarmThreshold-nDiff ){ sqlite3MallocAlarm(nDiff); } - assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) ); - assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) ); pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); - if( pNew==0 && mem0.alarmCallback ){ - sqlite3MallocAlarm(nBytes); + if( pNew==0 && mem0.alarmThreshold>0 ){ + sqlite3MallocAlarm((int)nBytes); pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); } if( pNew ){ nNew = sqlite3MallocSize(pNew); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nNew-nOld); + sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld); } sqlite3_mutex_leave(mem0.mutex); }else{ pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); } - assert( EIGHT_BYTE_ALIGNMENT(pNew) ); /* IMP: R-04675-44850 */ + assert( EIGHT_BYTE_ALIGNMENT(pNew) ); /* IMP: R-11148-40995 */ return pNew; } @@ -19714,6 +24738,13 @@ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){ ** subsystem is initialized prior to invoking sqliteRealloc. */ SQLITE_API void *sqlite3_realloc(void *pOld, int n){ +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + if( n<0 ) n = 0; /* IMP: R-26507-47431 */ + return sqlite3Realloc(pOld, n); +} +SQLITE_API void *sqlite3_realloc64(void *pOld, sqlite3_uint64 n){ #ifndef SQLITE_OMIT_AUTOINIT if( sqlite3_initialize() ) return 0; #endif @@ -19724,10 +24755,10 @@ SQLITE_API void *sqlite3_realloc(void *pOld, int n){ /* ** Allocate and zero memory. */ -SQLITE_PRIVATE void *sqlite3MallocZero(int n){ +SQLITE_PRIVATE void *sqlite3MallocZero(u64 n){ void *p = sqlite3Malloc(n); if( p ){ - memset(p, 0, n); + memset(p, 0, (size_t)n); } return p; } @@ -19736,17 +24767,32 @@ SQLITE_PRIVATE void *sqlite3MallocZero(int n){ ** Allocate and zero memory. If the allocation fails, make ** the mallocFailed flag in the connection pointer. */ -SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3 *db, int n){ - void *p = sqlite3DbMallocRaw(db, n); - if( p ){ - memset(p, 0, n); - } +SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3 *db, u64 n){ + void *p; + testcase( db==0 ); + p = sqlite3DbMallocRaw(db, n); + if( p ) memset(p, 0, (size_t)n); + return p; +} + + +/* Finish the work of sqlite3DbMallocRawNN for the unusual and +** slower case when the allocation cannot be fulfilled using lookaside. +*/ +static SQLITE_NOINLINE void *dbMallocRawFinish(sqlite3 *db, u64 n){ + void *p; + assert( db!=0 ); + p = sqlite3Malloc(n); + if( !p ) sqlite3OomFault(db); + sqlite3MemdebugSetType(p, + (db->lookaside.bDisable==0) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP); return p; } /* -** Allocate and zero memory. If the allocation fails, make -** the mallocFailed flag in the connection pointer. +** Allocate memory, either lookaside (if possible) or heap. +** If the allocation fails, set the mallocFailed flag in +** the connection pointer. ** ** If db!=0 and db->mallocFailed is true (indicating a prior malloc ** failure on the same database connection) then always return 0. @@ -19761,79 +24807,87 @@ SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3 *db, int n){ ** ** In other words, if a subsequent malloc (ex: "b") worked, it is assumed ** that all prior mallocs (ex: "a") worked too. +** +** The sqlite3MallocRawNN() variant guarantees that the "db" parameter is +** not a NULL pointer. */ -SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3 *db, int n){ +SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3 *db, u64 n){ void *p; - assert( db==0 || sqlite3_mutex_held(db->mutex) ); - assert( db==0 || db->pnBytesFreed==0 ); + if( db ) return sqlite3DbMallocRawNN(db, n); + p = sqlite3Malloc(n); + sqlite3MemdebugSetType(p, MEMTYPE_HEAP); + return p; +} +SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){ #ifndef SQLITE_OMIT_LOOKASIDE - if( db ){ - LookasideSlot *pBuf; - if( db->mallocFailed ){ - return 0; - } - if( db->lookaside.bEnabled ){ - if( n>db->lookaside.sz ){ - db->lookaside.anStat[1]++; - }else if( (pBuf = db->lookaside.pFree)==0 ){ - db->lookaside.anStat[2]++; - }else{ - db->lookaside.pFree = pBuf->pNext; - db->lookaside.nOut++; - db->lookaside.anStat[0]++; - if( db->lookaside.nOut>db->lookaside.mxOut ){ - db->lookaside.mxOut = db->lookaside.nOut; - } - return (void*)pBuf; + LookasideSlot *pBuf; + assert( db!=0 ); + assert( sqlite3_mutex_held(db->mutex) ); + assert( db->pnBytesFreed==0 ); + if( db->lookaside.bDisable==0 ){ + assert( db->mallocFailed==0 ); + if( n>db->lookaside.sz ){ + db->lookaside.anStat[1]++; + }else if( (pBuf = db->lookaside.pFree)==0 ){ + db->lookaside.anStat[2]++; + }else{ + db->lookaside.pFree = pBuf->pNext; + db->lookaside.nOut++; + db->lookaside.anStat[0]++; + if( db->lookaside.nOut>db->lookaside.mxOut ){ + db->lookaside.mxOut = db->lookaside.nOut; } + return (void*)pBuf; } + }else if( db->mallocFailed ){ + return 0; } #else - if( db && db->mallocFailed ){ + assert( db!=0 ); + assert( sqlite3_mutex_held(db->mutex) ); + assert( db->pnBytesFreed==0 ); + if( db->mallocFailed ){ return 0; } #endif - p = sqlite3Malloc(n); - if( !p && db ){ - db->mallocFailed = 1; - } - sqlite3MemdebugSetType(p, MEMTYPE_DB | - ((db && db->lookaside.bEnabled) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP)); - return p; + return dbMallocRawFinish(db, n); } +/* Forward declaration */ +static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n); + /* ** Resize the block of memory pointed to by p to n bytes. If the ** resize fails, set the mallocFailed flag in the connection object. */ -SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, int n){ +SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, u64 n){ + assert( db!=0 ); + if( p==0 ) return sqlite3DbMallocRawNN(db, n); + assert( sqlite3_mutex_held(db->mutex) ); + if( isLookaside(db,p) && n<=db->lookaside.sz ) return p; + return dbReallocFinish(db, p, n); +} +static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){ void *pNew = 0; assert( db!=0 ); - assert( sqlite3_mutex_held(db->mutex) ); + assert( p!=0 ); if( db->mallocFailed==0 ){ - if( p==0 ){ - return sqlite3DbMallocRaw(db, n); - } if( isLookaside(db, p) ){ - if( n<=db->lookaside.sz ){ - return p; - } - pNew = sqlite3DbMallocRaw(db, n); + pNew = sqlite3DbMallocRawNN(db, n); if( pNew ){ memcpy(pNew, p, db->lookaside.sz); sqlite3DbFree(db, p); } }else{ - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); + assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - pNew = sqlite3_realloc(p, n); + pNew = sqlite3_realloc64(p, n); if( !pNew ){ - sqlite3MemdebugSetType(p, MEMTYPE_DB|MEMTYPE_HEAP); - db->mallocFailed = 1; + sqlite3OomFault(db); } - sqlite3MemdebugSetType(pNew, MEMTYPE_DB | - (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP)); + sqlite3MemdebugSetType(pNew, + (db->lookaside.bDisable==0 ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP)); } } return pNew; @@ -19843,7 +24897,7 @@ SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, int n){ ** Attempt to reallocate p. If the reallocation fails, then free p ** and set the mallocFailed flag in the database connection. */ -SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, int n){ +SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, u64 n){ void *pNew; pNew = sqlite3DbRealloc(db, p, n); if( !pNew ){ @@ -19865,44 +24919,76 @@ SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3 *db, const char *z){ if( z==0 ){ return 0; } - n = sqlite3Strlen30(z) + 1; - assert( (n&0x7fffffff)==n ); - zNew = sqlite3DbMallocRaw(db, (int)n); + n = strlen(z) + 1; + zNew = sqlite3DbMallocRaw(db, n); if( zNew ){ memcpy(zNew, z, n); } return zNew; } -SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, int n){ +SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){ char *zNew; + assert( db!=0 ); if( z==0 ){ return 0; } assert( (n&0x7fffffff)==n ); - zNew = sqlite3DbMallocRaw(db, n+1); + zNew = sqlite3DbMallocRawNN(db, n+1); if( zNew ){ - memcpy(zNew, z, n); + memcpy(zNew, z, (size_t)n); zNew[n] = 0; } return zNew; } /* -** Create a string from the zFromat argument and the va_list that follows. -** Store the string in memory obtained from sqliteMalloc() and make *pz -** point to that string. +** Free any prior content in *pz and replace it with a copy of zNew. */ -SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zFormat, ...){ - va_list ap; - char *z; - - va_start(ap, zFormat); - z = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); +SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zNew){ sqlite3DbFree(db, *pz); - *pz = z; + *pz = sqlite3DbStrDup(db, zNew); } +/* +** Call this routine to record the fact that an OOM (out-of-memory) error +** has happened. This routine will set db->mallocFailed, and also +** temporarily disable the lookaside memory allocator and interrupt +** any running VDBEs. +*/ +SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){ + if( db->mallocFailed==0 && db->bBenignMalloc==0 ){ + db->mallocFailed = 1; + if( db->nVdbeExec>0 ){ + db->u1.isInterrupted = 1; + } + db->lookaside.bDisable++; + } +} + +/* +** This routine reactivates the memory allocator and clears the +** db->mallocFailed flag as necessary. +** +** The memory allocator is not restarted if there are running +** VDBEs. +*/ +SQLITE_PRIVATE void sqlite3OomClear(sqlite3 *db){ + if( db->mallocFailed && db->nVdbeExec==0 ){ + db->mallocFailed = 0; + db->u1.isInterrupted = 0; + assert( db->lookaside.bDisable>0 ); + db->lookaside.bDisable--; + } +} + +/* +** Take actions at the end of an API call to indicate an OOM error +*/ +static SQLITE_NOINLINE int apiOomError(sqlite3 *db){ + sqlite3OomClear(db); + sqlite3Error(db, SQLITE_NOMEM); + return SQLITE_NOMEM_BKPT; +} /* ** This function must be called before exiting any API function (i.e. @@ -19913,65 +24999,61 @@ SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zFormat ** function. However, if a malloc() failure has occurred since the previous ** invocation SQLITE_NOMEM is returned instead. ** -** If the first argument, db, is not NULL and a malloc() error has occurred, -** then the connection error-code (the value returned by sqlite3_errcode()) -** is set to SQLITE_NOMEM. +** If an OOM as occurred, then the connection error-code (the value +** returned by sqlite3_errcode()) is set to SQLITE_NOMEM. */ SQLITE_PRIVATE int sqlite3ApiExit(sqlite3* db, int rc){ - /* If the db handle is not NULL, then we must hold the connection handle - ** mutex here. Otherwise the read (and possible write) of db->mallocFailed + /* If the db handle must hold the connection handle mutex here. + ** Otherwise the read (and possible write) of db->mallocFailed ** is unsafe, as is the call to sqlite3Error(). */ - assert( !db || sqlite3_mutex_held(db->mutex) ); - if( db && (db->mallocFailed || rc==SQLITE_IOERR_NOMEM) ){ - sqlite3Error(db, SQLITE_NOMEM, 0); - db->mallocFailed = 0; - rc = SQLITE_NOMEM; + assert( db!=0 ); + assert( sqlite3_mutex_held(db->mutex) ); + if( db->mallocFailed || rc==SQLITE_IOERR_NOMEM ){ + return apiOomError(db); } - return rc & (db ? db->errMask : 0xff); + return rc & db->errMask; } /************** End of malloc.c **********************************************/ /************** Begin file printf.c ******************************************/ /* ** The "printf" code that follows dates from the 1980's. It is in -** the public domain. The original comments are included here for -** completeness. They are very out-of-date but might be useful as -** an historical reference. Most of the "enhancements" have been backed -** out so that the functionality is now the same as standard printf(). +** the public domain. ** ************************************************************************** ** ** This file contains code for a set of "printf"-like routines. These ** routines format strings much like the printf() from the standard C ** library, though the implementation here has enhancements to support -** SQLlite. +** SQLite. */ +/* #include "sqliteInt.h" */ /* ** Conversion types fall into various categories as defined by the ** following enumeration. */ -#define etRADIX 1 /* Integer types. %d, %x, %o, and so forth */ -#define etFLOAT 2 /* Floating point. %f */ -#define etEXP 3 /* Exponentional notation. %e and %E */ -#define etGENERIC 4 /* Floating or exponential, depending on exponent. %g */ -#define etSIZE 5 /* Return number of characters processed so far. %n */ -#define etSTRING 6 /* Strings. %s */ -#define etDYNSTRING 7 /* Dynamically allocated strings. %z */ -#define etPERCENT 8 /* Percent symbol. %% */ -#define etCHARX 9 /* Characters. %c */ +#define etRADIX 0 /* Integer types. %d, %x, %o, and so forth */ +#define etFLOAT 1 /* Floating point. %f */ +#define etEXP 2 /* Exponentional notation. %e and %E */ +#define etGENERIC 3 /* Floating or exponential, depending on exponent. %g */ +#define etSIZE 4 /* Return number of characters processed so far. %n */ +#define etSTRING 5 /* Strings. %s */ +#define etDYNSTRING 6 /* Dynamically allocated strings. %z */ +#define etPERCENT 7 /* Percent symbol. %% */ +#define etCHARX 8 /* Characters. %c */ /* The rest are extensions, not normally found in printf() */ -#define etSQLESCAPE 10 /* Strings with '\'' doubled. %q */ -#define etSQLESCAPE2 11 /* Strings with '\'' doubled and enclosed in '', +#define etSQLESCAPE 9 /* Strings with '\'' doubled. %q */ +#define etSQLESCAPE2 10 /* Strings with '\'' doubled and enclosed in '', NULL pointers replaced by SQL NULL. %Q */ -#define etTOKEN 12 /* a pointer to a Token structure */ -#define etSRCLIST 13 /* a pointer to a SrcList */ -#define etPOINTER 14 /* The %p conversion */ -#define etSQLESCAPE3 15 /* %w -> Strings with '\"' doubled */ -#define etORDINAL 16 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */ +#define etTOKEN 11 /* a pointer to a Token structure */ +#define etSRCLIST 12 /* a pointer to a SrcList */ +#define etPOINTER 13 /* The %p conversion */ +#define etSQLESCAPE3 14 /* %w -> Strings with '\"' doubled */ +#define etORDINAL 15 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */ -#define etINVALID 0 /* Any unrecognized conversion type */ +#define etINVALID 16 /* Any unrecognized conversion type */ /* @@ -19996,7 +25078,6 @@ typedef struct et_info { /* Information about each format field */ ** Allowed values for et_info.flags */ #define FLAG_SIGNED 1 /* True if the value to convert is signed */ -#define FLAG_INTERN 2 /* True if for internal use only */ #define FLAG_STRING 4 /* Allow infinity precision */ @@ -20030,11 +25111,10 @@ static const et_info fmtinfo[] = { { '%', 0, 0, etPERCENT, 0, 0 }, { 'p', 16, 0, etPOINTER, 0, 1 }, -/* All the rest have the FLAG_INTERN bit set and are thus for internal -** use only */ - { 'T', 0, 2, etTOKEN, 0, 0 }, - { 'S', 0, 2, etSRCLIST, 0, 0 }, - { 'r', 10, 3, etORDINAL, 0, 0 }, + /* All the rest are undocumented and are for internal use only */ + { 'T', 0, 0, etTOKEN, 0, 0 }, + { 'S', 0, 0, etSRCLIST, 0, 0 }, + { 'r', 10, 1, etORDINAL, 0, 0 }, }; /* @@ -20068,24 +25148,11 @@ static char et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ } #endif /* SQLITE_OMIT_FLOATING_POINT */ -/* -** Append N space characters to the given string buffer. -*/ -SQLITE_PRIVATE void sqlite3AppendSpace(StrAccum *pAccum, int N){ - static const char zSpaces[] = " "; - while( N>=(int)sizeof(zSpaces)-1 ){ - sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1); - N -= sizeof(zSpaces)-1; - } - if( N>0 ){ - sqlite3StrAccumAppend(pAccum, zSpaces, N); - } -} - /* ** Set the StrAccum object to an error mode. */ static void setStrAccumError(StrAccum *p, u8 eError){ + assert( eError==STRACCUM_NOMEM || eError==STRACCUM_TOOBIG ); p->accError = eError; p->nAlloc = 0; } @@ -20121,7 +25188,6 @@ static char *getTextArg(PrintfArguments *p){ */ SQLITE_PRIVATE void sqlite3VXPrintf( StrAccum *pAccum, /* Accumulate results here */ - u32 bFlags, /* SQLITE_PRINTF_* flags */ const char *fmt, /* Format string */ va_list ap /* arguments */ ){ @@ -20140,16 +25206,15 @@ SQLITE_PRIVATE void sqlite3VXPrintf( etByte flag_long; /* True if "l" flag is present */ etByte flag_longlong; /* True if the "ll" flag is present */ etByte done; /* Loop termination flag */ - etByte xtype = 0; /* Conversion paradigm */ + etByte xtype = etINVALID; /* Conversion paradigm */ u8 bArgList; /* True for SQLITE_PRINTF_SQLFUNC */ - u8 useIntern; /* Ok to use internal conversions (ex: %T) */ char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */ sqlite_uint64 longvalue; /* Value for integer types */ LONGDOUBLE_TYPE realvalue; /* Value for real types */ const et_info *infop; /* Pointer to the appropriate info structure */ char *zOut; /* Rendering buffer */ int nOut; /* Size of the rendering buffer */ - char *zExtra; /* Malloced memory used by some conversion */ + char *zExtra = 0; /* Malloced memory used by some conversion */ #ifndef SQLITE_OMIT_FLOATING_POINT int exp, e2; /* exponent of real numbers */ int nsd; /* Number of significant digits returned */ @@ -20161,22 +25226,22 @@ SQLITE_PRIVATE void sqlite3VXPrintf( char buf[etBUFSIZE]; /* Conversion buffer */ bufpt = 0; - if( bFlags ){ - if( (bArgList = (bFlags & SQLITE_PRINTF_SQLFUNC))!=0 ){ - pArgList = va_arg(ap, PrintfArguments*); - } - useIntern = bFlags & SQLITE_PRINTF_INTERNAL; + if( (pAccum->printfFlags & SQLITE_PRINTF_SQLFUNC)!=0 ){ + pArgList = va_arg(ap, PrintfArguments*); + bArgList = 1; }else{ - bArgList = useIntern = 0; + bArgList = 0; } for(; (c=(*fmt))!=0; ++fmt){ if( c!='%' ){ - int amt; bufpt = (char *)fmt; - amt = 1; - while( (c=(*++fmt))!='%' && c!=0 ) amt++; - sqlite3StrAccumAppend(pAccum, bufpt, amt); - if( c==0 ) break; +#if HAVE_STRCHRNUL + fmt = strchrnul(fmt, '%'); +#else + do{ fmt++; }while( *fmt && *fmt != '%' ); +#endif + sqlite3StrAccumAppend(pAccum, bufpt, (int)(fmt - bufpt)); + if( *fmt==0 ) break; } if( (c=(*++fmt))==0 ){ sqlite3StrAccumAppend(pAccum, "%", 1); @@ -20198,7 +25263,6 @@ SQLITE_PRIVATE void sqlite3VXPrintf( } }while( !done && (c=(*++fmt))!=0 ); /* Get the field width */ - width = 0; if( c=='*' ){ if( bArgList ){ width = (int)getIntArg(pArgList); @@ -20207,18 +25271,27 @@ SQLITE_PRIVATE void sqlite3VXPrintf( } if( width<0 ){ flag_leftjustify = 1; - width = -width; + width = width >= -2147483647 ? -width : 0; } c = *++fmt; }else{ + unsigned wx = 0; while( c>='0' && c<='9' ){ - width = width*10 + c - '0'; + wx = wx*10 + c - '0'; c = *++fmt; } + testcase( wx>0x7fffffff ); + width = wx & 0x7fffffff; } + assert( width>=0 ); +#ifdef SQLITE_PRINTF_PRECISION_LIMIT + if( width>SQLITE_PRINTF_PRECISION_LIMIT ){ + width = SQLITE_PRINTF_PRECISION_LIMIT; + } +#endif + /* Get the precision */ if( c=='.' ){ - precision = 0; c = *++fmt; if( c=='*' ){ if( bArgList ){ @@ -20226,17 +25299,30 @@ SQLITE_PRIVATE void sqlite3VXPrintf( }else{ precision = va_arg(ap,int); } - if( precision<0 ) precision = -precision; c = *++fmt; + if( precision<0 ){ + precision = precision >= -2147483647 ? -precision : -1; + } }else{ + unsigned px = 0; while( c>='0' && c<='9' ){ - precision = precision*10 + c - '0'; + px = px*10 + c - '0'; c = *++fmt; } + testcase( px>0x7fffffff ); + precision = px & 0x7fffffff; } }else{ precision = -1; } + assert( precision>=(-1) ); +#ifdef SQLITE_PRINTF_PRECISION_LIMIT + if( precision>SQLITE_PRINTF_PRECISION_LIMIT ){ + precision = SQLITE_PRINTF_PRECISION_LIMIT; + } +#endif + + /* Get the conversion type modifier */ if( c=='l' ){ flag_long = 1; @@ -20256,15 +25342,10 @@ SQLITE_PRIVATE void sqlite3VXPrintf( for(idx=0; idxflags & FLAG_INTERN)==0 ){ - xtype = infop->type; - }else{ - return; - } + xtype = infop->type; break; } } - zExtra = 0; /* ** At this point, variables are initialized as follows: @@ -20356,10 +25437,8 @@ SQLITE_PRIVATE void sqlite3VXPrintf( *(--bufpt) = zOrd[x*2]; } { - register const char *cset; /* Use registers for speed */ - register int base; - cset = &aDigits[infop->charset]; - base = infop->base; + const char *cset = &aDigits[infop->charset]; + u8 base = infop->base; do{ /* Convert to ascii */ *(--bufpt) = cset[longvalue%base]; longvalue = longvalue/base; @@ -20399,7 +25478,8 @@ SQLITE_PRIVATE void sqlite3VXPrintf( else prefix = 0; } if( xtype==etGENERIC && precision>0 ) precision--; - for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){} + testcase( precision>0xfff ); + for(idx=precision&0xfff, rounder=0.5; idx>0; idx--, rounder*=0.1){} if( xtype==etFLOAT ) realvalue += rounder; /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ exp = 0; @@ -20413,23 +25493,16 @@ SQLITE_PRIVATE void sqlite3VXPrintf( #if __DBL_MAX_10_EXP__ > 100 while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;} #endif -#if __DBL_MAX_10_EXP__ > 64 - while( realvalue>=1e64*scale && exp<=350 ){ scale *= 1e64; exp+=64; } -#endif - while( realvalue>=1e8*scale && exp<=350 ){ scale *= 1e8; exp+=8; } + while( realvalue>=1e10*scale && exp<=350 ){ scale *= 1e10; exp+=10; } while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; } realvalue /= scale; while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } if( exp>350 ){ - if( prefix=='-' ){ - bufpt = "-Inf"; - }else if( prefix=='+' ){ - bufpt = "+Inf"; - }else{ - bufpt = "Inf"; - } - length = sqlite3Strlen30(bufpt); + bufpt = buf; + buf[0] = prefix; + memcpy(buf+(prefix!=0),"Inf",4); + length = 3+(prefix!=0); break; } } @@ -20458,8 +25531,9 @@ SQLITE_PRIVATE void sqlite3VXPrintf( }else{ e2 = exp; } - if( MAX(e2,0)+precision+width > etBUFSIZE - 15 ){ - bufpt = zExtra = sqlite3Malloc( MAX(e2,0)+precision+width+15 ); + if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){ + bufpt = zExtra + = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 ); if( bufpt==0 ){ setStrAccumError(pAccum, STRACCUM_NOMEM); return; @@ -20561,25 +25635,29 @@ SQLITE_PRIVATE void sqlite3VXPrintf( }else{ c = va_arg(ap,int); } - buf[0] = (char)c; - if( precision>=0 ){ - for(idx=1; idx1 ){ + width -= precision-1; + if( width>1 && !flag_leftjustify ){ + sqlite3AppendChar(pAccum, width-1, ' '); + width = 0; + } + sqlite3AppendChar(pAccum, precision-1, c); } + length = 1; + buf[0] = c; bufpt = buf; break; case etSTRING: case etDYNSTRING: if( bArgList ){ bufpt = getTextArg(pArgList); + xtype = etSTRING; }else{ bufpt = va_arg(ap,char*); } if( bufpt==0 ){ bufpt = ""; - }else if( xtype==etDYNSTRING && !bArgList ){ + }else if( xtype==etDYNSTRING ){ zExtra = bufpt; } if( precision>=0 ){ @@ -20588,9 +25666,9 @@ SQLITE_PRIVATE void sqlite3VXPrintf( length = sqlite3Strlen30(bufpt); } break; - case etSQLESCAPE: - case etSQLESCAPE2: - case etSQLESCAPE3: { + case etSQLESCAPE: /* Escape ' characters */ + case etSQLESCAPE2: /* Escape ' and enclose in '...' */ + case etSQLESCAPE3: { /* Escape " characters */ int i, j, k, n, isnull; int needQuote; char ch; @@ -20609,7 +25687,7 @@ SQLITE_PRIVATE void sqlite3VXPrintf( if( ch==q ) n++; } needQuote = !isnull && xtype==etSQLESCAPE2; - n += i + 1 + needQuote*2; + n += i + 3; if( n>etBUFSIZE ){ bufpt = zExtra = sqlite3Malloc( n ); if( bufpt==0 ){ @@ -20635,7 +25713,9 @@ SQLITE_PRIVATE void sqlite3VXPrintf( break; } case etTOKEN: { - Token *pToken = va_arg(ap, Token*); + Token *pToken; + if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; + pToken = va_arg(ap, Token*); assert( bArgList==0 ); if( pToken && pToken->n ){ sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n); @@ -20644,9 +25724,13 @@ SQLITE_PRIVATE void sqlite3VXPrintf( break; } case etSRCLIST: { - SrcList *pSrc = va_arg(ap, SrcList*); - int k = va_arg(ap, int); - struct SrcList_item *pItem = &pSrc->a[k]; + SrcList *pSrc; + int k; + struct SrcList_item *pItem; + if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; + pSrc = va_arg(ap, SrcList*); + k = va_arg(ap, int); + pItem = &pSrc->a[k]; assert( bArgList==0 ); assert( k>=0 && knSrc ); if( pItem->zDatabase ){ @@ -20667,77 +25751,123 @@ SQLITE_PRIVATE void sqlite3VXPrintf( ** "length" characters long. The field width is "width". Do ** the output. */ - if( !flag_leftjustify ){ - register int nspace; - nspace = width-length; - if( nspace>0 ){ - sqlite3AppendSpace(pAccum, nspace); - } - } - if( length>0 ){ + width -= length; + if( width>0 ){ + if( !flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' '); + sqlite3StrAccumAppend(pAccum, bufpt, length); + if( flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' '); + }else{ sqlite3StrAccumAppend(pAccum, bufpt, length); } - if( flag_leftjustify ){ - register int nspace; - nspace = width-length; - if( nspace>0 ){ - sqlite3AppendSpace(pAccum, nspace); - } + + if( zExtra ){ + sqlite3DbFree(pAccum->db, zExtra); + zExtra = 0; } - if( zExtra ) sqlite3_free(zExtra); }/* End for loop over the format string */ } /* End of function */ /* -** Append N bytes of text from z to the StrAccum object. +** Enlarge the memory allocation on a StrAccum object so that it is +** able to accept at least N more bytes of text. +** +** Return the number of bytes of text that StrAccum is able to accept +** after the attempted enlargement. The value returned might be zero. +*/ +static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ + char *zNew; + assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */ + if( p->accError ){ + testcase(p->accError==STRACCUM_TOOBIG); + testcase(p->accError==STRACCUM_NOMEM); + return 0; + } + if( p->mxAlloc==0 ){ + N = p->nAlloc - p->nChar - 1; + setStrAccumError(p, STRACCUM_TOOBIG); + return N; + }else{ + char *zOld = isMalloced(p) ? p->zText : 0; + i64 szNew = p->nChar; + assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) ); + szNew += N + 1; + if( szNew+p->nChar<=p->mxAlloc ){ + /* Force exponential buffer size growth as long as it does not overflow, + ** to avoid having to call this routine too often */ + szNew += p->nChar; + } + if( szNew > p->mxAlloc ){ + sqlite3StrAccumReset(p); + setStrAccumError(p, STRACCUM_TOOBIG); + return 0; + }else{ + p->nAlloc = (int)szNew; + } + if( p->db ){ + zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); + }else{ + zNew = sqlite3_realloc64(zOld, p->nAlloc); + } + if( zNew ){ + assert( p->zText!=0 || p->nChar==0 ); + if( !isMalloced(p) && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar); + p->zText = zNew; + p->nAlloc = sqlite3DbMallocSize(p->db, zNew); + p->printfFlags |= SQLITE_PRINTF_MALLOCED; + }else{ + sqlite3StrAccumReset(p); + setStrAccumError(p, STRACCUM_NOMEM); + return 0; + } + } + return N; +} + +/* +** Append N copies of character c to the given string buffer. +*/ +SQLITE_PRIVATE void sqlite3AppendChar(StrAccum *p, int N, char c){ + testcase( p->nChar + (i64)N > 0x7fffffff ); + if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){ + return; + } + assert( (p->zText==p->zBase)==!isMalloced(p) ); + while( (N--)>0 ) p->zText[p->nChar++] = c; +} + +/* +** The StrAccum "p" is not large enough to accept N new bytes of z[]. +** So enlarge if first, then do the append. +** +** This is a helper routine to sqlite3StrAccumAppend() that does special-case +** work (enlarging the buffer) using tail recursion, so that the +** sqlite3StrAccumAppend() routine can use fast calling semantics. +*/ +static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){ + N = sqlite3StrAccumEnlarge(p, N); + if( N>0 ){ + memcpy(&p->zText[p->nChar], z, N); + p->nChar += N; + } + assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) ); +} + +/* +** Append N bytes of text from z to the StrAccum object. Increase the +** size of the memory allocation for StrAccum if necessary. */ SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){ - assert( z!=0 ); + assert( z!=0 || N==0 ); assert( p->zText!=0 || p->nChar==0 || p->accError ); assert( N>=0 ); assert( p->accError==0 || p->nAlloc==0 ); if( p->nChar+N >= p->nAlloc ){ - char *zNew; - if( p->accError ){ - testcase(p->accError==STRACCUM_TOOBIG); - testcase(p->accError==STRACCUM_NOMEM); - return; - } - if( !p->useMalloc ){ - N = p->nAlloc - p->nChar - 1; - setStrAccumError(p, STRACCUM_TOOBIG); - if( N<=0 ){ - return; - } - }else{ - char *zOld = (p->zText==p->zBase ? 0 : p->zText); - i64 szNew = p->nChar; - szNew += N + 1; - if( szNew > p->mxAlloc ){ - sqlite3StrAccumReset(p); - setStrAccumError(p, STRACCUM_TOOBIG); - return; - }else{ - p->nAlloc = (int)szNew; - } - if( p->useMalloc==1 ){ - zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); - }else{ - zNew = sqlite3_realloc(zOld, p->nAlloc); - } - if( zNew ){ - if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar); - p->zText = zNew; - }else{ - sqlite3StrAccumReset(p); - setStrAccumError(p, STRACCUM_NOMEM); - return; - } - } + enlargeAndAppend(p,z,N); + }else if( N ){ + assert( p->zText ); + p->nChar += N; + memcpy(&p->zText[p->nChar-N], z, N); } - assert( p->zText ); - memcpy(&p->zText[p->nChar], z, N); - p->nChar += N; } /* @@ -20753,20 +25883,23 @@ SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum *p, const char *z){ ** Return a pointer to the resulting string. Return a NULL ** pointer if any kind of error was encountered. */ +static SQLITE_NOINLINE char *strAccumFinishRealloc(StrAccum *p){ + assert( p->mxAlloc>0 && !isMalloced(p) ); + p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 ); + if( p->zText ){ + memcpy(p->zText, p->zBase, p->nChar+1); + p->printfFlags |= SQLITE_PRINTF_MALLOCED; + }else{ + setStrAccumError(p, STRACCUM_NOMEM); + } + return p->zText; +} SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){ if( p->zText ){ + assert( (p->zText==p->zBase)==!isMalloced(p) ); p->zText[p->nChar] = 0; - if( p->useMalloc && p->zText==p->zBase ){ - if( p->useMalloc==1 ){ - p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 ); - }else{ - p->zText = sqlite3_malloc(p->nChar+1); - } - if( p->zText ){ - memcpy(p->zText, p->zBase, p->nChar+1); - }else{ - setStrAccumError(p, STRACCUM_NOMEM); - } + if( p->mxAlloc>0 && !isMalloced(p) ){ + return strAccumFinishRealloc(p); } } return p->zText; @@ -20776,27 +25909,36 @@ SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){ ** Reset an StrAccum string. Reclaim all malloced memory. */ SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum *p){ - if( p->zText!=p->zBase ){ - if( p->useMalloc==1 ){ - sqlite3DbFree(p->db, p->zText); - }else{ - sqlite3_free(p->zText); - } + assert( (p->zText==0 || p->zText==p->zBase)==!isMalloced(p) ); + if( isMalloced(p) ){ + sqlite3DbFree(p->db, p->zText); + p->printfFlags &= ~SQLITE_PRINTF_MALLOCED; } p->zText = 0; } /* -** Initialize a string accumulator +** Initialize a string accumulator. +** +** p: The accumulator to be initialized. +** db: Pointer to a database connection. May be NULL. Lookaside +** memory is used if not NULL. db->mallocFailed is set appropriately +** when not NULL. +** zBase: An initial buffer. May be NULL in which case the initial buffer +** is malloced. +** n: Size of zBase in bytes. If total space requirements never exceed +** n then no memory allocations ever occur. +** mx: Maximum number of bytes to accumulate. If mx==0 then no memory +** allocations will ever occur. */ -SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum *p, char *zBase, int n, int mx){ +SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum *p, sqlite3 *db, char *zBase, int n, int mx){ p->zText = p->zBase = zBase; - p->db = 0; + p->db = db; p->nChar = 0; p->nAlloc = n; p->mxAlloc = mx; - p->useMalloc = 1; p->accError = 0; + p->printfFlags = 0; } /* @@ -20808,13 +25950,13 @@ SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list a char zBase[SQLITE_PRINT_BUF_SIZE]; StrAccum acc; assert( db!=0 ); - sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), + sqlite3StrAccumInit(&acc, db, zBase, sizeof(zBase), db->aLimit[SQLITE_LIMIT_LENGTH]); - acc.db = db; - sqlite3VXPrintf(&acc, SQLITE_PRINTF_INTERNAL, zFormat, ap); + acc.printfFlags = SQLITE_PRINTF_INTERNAL; + sqlite3VXPrintf(&acc, zFormat, ap); z = sqlite3StrAccumFinish(&acc); if( acc.accError==STRACCUM_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } return z; } @@ -20832,24 +25974,6 @@ SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3 *db, const char *zFormat, ...){ return z; } -/* -** Like sqlite3MPrintf(), but call sqlite3DbFree() on zStr after formatting -** the string and before returnning. This routine is intended to be used -** to modify an existing string. For example: -** -** x = sqlite3MPrintf(db, x, "prefix %s suffix", x); -** -*/ -SQLITE_PRIVATE char *sqlite3MAppendf(sqlite3 *db, char *zStr, const char *zFormat, ...){ - va_list ap; - char *z; - va_start(ap, zFormat); - z = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); - sqlite3DbFree(db, zStr); - return z; -} - /* ** Print into memory obtained from sqlite3_malloc(). Omit the internal ** %-conversion extensions. @@ -20858,12 +25982,18 @@ SQLITE_API char *sqlite3_vmprintf(const char *zFormat, va_list ap){ char *z; char zBase[SQLITE_PRINT_BUF_SIZE]; StrAccum acc; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( zFormat==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif #ifndef SQLITE_OMIT_AUTOINIT if( sqlite3_initialize() ) return 0; #endif - sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), SQLITE_MAX_LENGTH); - acc.useMalloc = 2; - sqlite3VXPrintf(&acc, 0, zFormat, ap); + sqlite3StrAccumInit(&acc, 0, zBase, sizeof(zBase), SQLITE_MAX_LENGTH); + sqlite3VXPrintf(&acc, zFormat, ap); z = sqlite3StrAccumFinish(&acc); return z; } @@ -20900,10 +26030,17 @@ SQLITE_API char *sqlite3_mprintf(const char *zFormat, ...){ SQLITE_API char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){ StrAccum acc; if( n<=0 ) return zBuf; - sqlite3StrAccumInit(&acc, zBuf, n, 0); - acc.useMalloc = 0; - sqlite3VXPrintf(&acc, 0, zFormat, ap); - return sqlite3StrAccumFinish(&acc); +#ifdef SQLITE_ENABLE_API_ARMOR + if( zBuf==0 || zFormat==0 ) { + (void)SQLITE_MISUSE_BKPT; + if( zBuf ) zBuf[0] = 0; + return zBuf; + } +#endif + sqlite3StrAccumInit(&acc, 0, zBuf, n, 0); + sqlite3VXPrintf(&acc, zFormat, ap); + zBuf[acc.nChar] = 0; + return zBuf; } SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ char *z; @@ -20922,14 +26059,18 @@ SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ ** sqlite3_log() must render into a static buffer. It cannot dynamically ** allocate memory because it might be called while the memory allocator ** mutex is held. +** +** sqlite3VXPrintf() might ask for *temporary* memory allocations for +** certain format characters (%q) or for very large precisions or widths. +** Care must be taken that any sqlite3_log() calls that occur while the +** memory mutex is held do not use these mechanisms. */ static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){ StrAccum acc; /* String accumulator */ char zMsg[SQLITE_PRINT_BUF_SIZE*3]; /* Complete log message */ - sqlite3StrAccumInit(&acc, zMsg, sizeof(zMsg), 0); - acc.useMalloc = 0; - sqlite3VXPrintf(&acc, 0, zFormat, ap); + sqlite3StrAccumInit(&acc, 0, zMsg, sizeof(zMsg), 0); + sqlite3VXPrintf(&acc, zFormat, ap); sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode, sqlite3StrAccumFinish(&acc)); } @@ -20946,7 +26087,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...){ } } -#if defined(SQLITE_DEBUG) +#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) /* ** A version of printf() that understands %lld. Used for debugging. ** The printf() built into some versions of windows does not understand %lld @@ -20956,10 +26097,9 @@ SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){ va_list ap; StrAccum acc; char zBuf[500]; - sqlite3StrAccumInit(&acc, zBuf, sizeof(zBuf), 0); - acc.useMalloc = 0; + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); va_start(ap,zFormat); - sqlite3VXPrintf(&acc, 0, zFormat, ap); + sqlite3VXPrintf(&acc, zFormat, ap); va_end(ap); sqlite3StrAccumFinish(&acc); fprintf(stdout,"%s", zBuf); @@ -20967,17 +26107,539 @@ SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){ } #endif + /* -** variable-argument wrapper around sqlite3VXPrintf(). +** variable-argument wrapper around sqlite3VXPrintf(). The bFlags argument +** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats. */ -SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, u32 bFlags, const char *zFormat, ...){ +SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, const char *zFormat, ...){ va_list ap; va_start(ap,zFormat); - sqlite3VXPrintf(p, bFlags, zFormat, ap); + sqlite3VXPrintf(p, zFormat, ap); va_end(ap); } /************** End of printf.c **********************************************/ +/************** Begin file treeview.c ****************************************/ +/* +** 2015-06-08 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file contains C code to implement the TreeView debugging routines. +** These routines print a parse tree to standard output for debugging and +** analysis. +** +** The interfaces in this file is only available when compiling +** with SQLITE_DEBUG. +*/ +/* #include "sqliteInt.h" */ +#ifdef SQLITE_DEBUG + +/* +** Add a new subitem to the tree. The moreToFollow flag indicates that this +** is not the last item in the tree. +*/ +static TreeView *sqlite3TreeViewPush(TreeView *p, u8 moreToFollow){ + if( p==0 ){ + p = sqlite3_malloc64( sizeof(*p) ); + if( p==0 ) return 0; + memset(p, 0, sizeof(*p)); + }else{ + p->iLevel++; + } + assert( moreToFollow==0 || moreToFollow==1 ); + if( p->iLevelbLine) ) p->bLine[p->iLevel] = moreToFollow; + return p; +} + +/* +** Finished with one layer of the tree +*/ +static void sqlite3TreeViewPop(TreeView *p){ + if( p==0 ) return; + p->iLevel--; + if( p->iLevel<0 ) sqlite3_free(p); +} + +/* +** Generate a single line of output for the tree, with a prefix that contains +** all the appropriate tree lines +*/ +static void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ + va_list ap; + int i; + StrAccum acc; + char zBuf[500]; + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); + if( p ){ + for(i=0; iiLevel && ibLine)-1; i++){ + sqlite3StrAccumAppend(&acc, p->bLine[i] ? "| " : " ", 4); + } + sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|-- " : "'-- ", 4); + } + va_start(ap, zFormat); + sqlite3VXPrintf(&acc, zFormat, ap); + va_end(ap); + assert( acc.nChar>0 ); + if( zBuf[acc.nChar-1]!='\n' ) sqlite3StrAccumAppend(&acc, "\n", 1); + sqlite3StrAccumFinish(&acc); + fprintf(stdout,"%s", zBuf); + fflush(stdout); +} + +/* +** Shorthand for starting a new tree item that consists of a single label +*/ +static void sqlite3TreeViewItem(TreeView *p, const char *zLabel,u8 moreFollows){ + p = sqlite3TreeViewPush(p, moreFollows); + sqlite3TreeViewLine(p, "%s", zLabel); +} + +/* +** Generate a human-readable description of a WITH clause. +*/ +SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 moreToFollow){ + int i; + if( pWith==0 ) return; + if( pWith->nCte==0 ) return; + if( pWith->pOuter ){ + sqlite3TreeViewLine(pView, "WITH (0x%p, pOuter=0x%p)",pWith,pWith->pOuter); + }else{ + sqlite3TreeViewLine(pView, "WITH (0x%p)", pWith); + } + if( pWith->nCte>0 ){ + pView = sqlite3TreeViewPush(pView, 1); + for(i=0; inCte; i++){ + StrAccum x; + char zLine[1000]; + const struct Cte *pCte = &pWith->a[i]; + sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); + sqlite3XPrintf(&x, "%s", pCte->zName); + if( pCte->pCols && pCte->pCols->nExpr>0 ){ + char cSep = '('; + int j; + for(j=0; jpCols->nExpr; j++){ + sqlite3XPrintf(&x, "%c%s", cSep, pCte->pCols->a[j].zName); + cSep = ','; + } + sqlite3XPrintf(&x, ")"); + } + sqlite3XPrintf(&x, " AS"); + sqlite3StrAccumFinish(&x); + sqlite3TreeViewItem(pView, zLine, inCte-1); + sqlite3TreeViewSelect(pView, pCte->pSelect, 0); + sqlite3TreeViewPop(pView); + } + sqlite3TreeViewPop(pView); + } +} + + +/* +** Generate a human-readable description of a Select object. +*/ +SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 moreToFollow){ + int n = 0; + int cnt = 0; + pView = sqlite3TreeViewPush(pView, moreToFollow); + if( p->pWith ){ + sqlite3TreeViewWith(pView, p->pWith, 1); + cnt = 1; + sqlite3TreeViewPush(pView, 1); + } + do{ + sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x nSelectRow=%d", + ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), + ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags, + (int)p->nSelectRow + ); + if( cnt++ ) sqlite3TreeViewPop(pView); + if( p->pPrior ){ + n = 1000; + }else{ + n = 0; + if( p->pSrc && p->pSrc->nSrc ) n++; + if( p->pWhere ) n++; + if( p->pGroupBy ) n++; + if( p->pHaving ) n++; + if( p->pOrderBy ) n++; + if( p->pLimit ) n++; + if( p->pOffset ) n++; + } + sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set"); + if( p->pSrc && p->pSrc->nSrc ){ + int i; + pView = sqlite3TreeViewPush(pView, (n--)>0); + sqlite3TreeViewLine(pView, "FROM"); + for(i=0; ipSrc->nSrc; i++){ + struct SrcList_item *pItem = &p->pSrc->a[i]; + StrAccum x; + char zLine[100]; + sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); + sqlite3XPrintf(&x, "{%d,*}", pItem->iCursor); + if( pItem->zDatabase ){ + sqlite3XPrintf(&x, " %s.%s", pItem->zDatabase, pItem->zName); + }else if( pItem->zName ){ + sqlite3XPrintf(&x, " %s", pItem->zName); + } + if( pItem->pTab ){ + sqlite3XPrintf(&x, " tabname=%Q", pItem->pTab->zName); + } + if( pItem->zAlias ){ + sqlite3XPrintf(&x, " (AS %s)", pItem->zAlias); + } + if( pItem->fg.jointype & JT_LEFT ){ + sqlite3XPrintf(&x, " LEFT-JOIN"); + } + sqlite3StrAccumFinish(&x); + sqlite3TreeViewItem(pView, zLine, ipSrc->nSrc-1); + if( pItem->pSelect ){ + sqlite3TreeViewSelect(pView, pItem->pSelect, 0); + } + if( pItem->fg.isTabFunc ){ + sqlite3TreeViewExprList(pView, pItem->u1.pFuncArg, 0, "func-args:"); + } + sqlite3TreeViewPop(pView); + } + sqlite3TreeViewPop(pView); + } + if( p->pWhere ){ + sqlite3TreeViewItem(pView, "WHERE", (n--)>0); + sqlite3TreeViewExpr(pView, p->pWhere, 0); + sqlite3TreeViewPop(pView); + } + if( p->pGroupBy ){ + sqlite3TreeViewExprList(pView, p->pGroupBy, (n--)>0, "GROUPBY"); + } + if( p->pHaving ){ + sqlite3TreeViewItem(pView, "HAVING", (n--)>0); + sqlite3TreeViewExpr(pView, p->pHaving, 0); + sqlite3TreeViewPop(pView); + } + if( p->pOrderBy ){ + sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY"); + } + if( p->pLimit ){ + sqlite3TreeViewItem(pView, "LIMIT", (n--)>0); + sqlite3TreeViewExpr(pView, p->pLimit, 0); + sqlite3TreeViewPop(pView); + } + if( p->pOffset ){ + sqlite3TreeViewItem(pView, "OFFSET", (n--)>0); + sqlite3TreeViewExpr(pView, p->pOffset, 0); + sqlite3TreeViewPop(pView); + } + if( p->pPrior ){ + const char *zOp = "UNION"; + switch( p->op ){ + case TK_ALL: zOp = "UNION ALL"; break; + case TK_INTERSECT: zOp = "INTERSECT"; break; + case TK_EXCEPT: zOp = "EXCEPT"; break; + } + sqlite3TreeViewItem(pView, zOp, 1); + } + p = p->pPrior; + }while( p!=0 ); + sqlite3TreeViewPop(pView); +} + +/* +** Generate a human-readable explanation of an expression tree. +*/ +SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){ + const char *zBinOp = 0; /* Binary operator */ + const char *zUniOp = 0; /* Unary operator */ + char zFlgs[30]; + pView = sqlite3TreeViewPush(pView, moreToFollow); + if( pExpr==0 ){ + sqlite3TreeViewLine(pView, "nil"); + sqlite3TreeViewPop(pView); + return; + } + if( pExpr->flags ){ + sqlite3_snprintf(sizeof(zFlgs),zFlgs," flags=0x%x",pExpr->flags); + }else{ + zFlgs[0] = 0; + } + switch( pExpr->op ){ + case TK_AGG_COLUMN: { + sqlite3TreeViewLine(pView, "AGG{%d:%d}%s", + pExpr->iTable, pExpr->iColumn, zFlgs); + break; + } + case TK_COLUMN: { + if( pExpr->iTable<0 ){ + /* This only happens when coding check constraints */ + sqlite3TreeViewLine(pView, "COLUMN(%d)%s", pExpr->iColumn, zFlgs); + }else{ + sqlite3TreeViewLine(pView, "{%d:%d}%s", + pExpr->iTable, pExpr->iColumn, zFlgs); + } + break; + } + case TK_INTEGER: { + if( pExpr->flags & EP_IntValue ){ + sqlite3TreeViewLine(pView, "%d", pExpr->u.iValue); + }else{ + sqlite3TreeViewLine(pView, "%s", pExpr->u.zToken); + } + break; + } +#ifndef SQLITE_OMIT_FLOATING_POINT + case TK_FLOAT: { + sqlite3TreeViewLine(pView,"%s", pExpr->u.zToken); + break; + } +#endif + case TK_STRING: { + sqlite3TreeViewLine(pView,"%Q", pExpr->u.zToken); + break; + } + case TK_NULL: { + sqlite3TreeViewLine(pView,"NULL"); + break; + } +#ifndef SQLITE_OMIT_BLOB_LITERAL + case TK_BLOB: { + sqlite3TreeViewLine(pView,"%s", pExpr->u.zToken); + break; + } +#endif + case TK_VARIABLE: { + sqlite3TreeViewLine(pView,"VARIABLE(%s,%d)", + pExpr->u.zToken, pExpr->iColumn); + break; + } + case TK_REGISTER: { + sqlite3TreeViewLine(pView,"REGISTER(%d)", pExpr->iTable); + break; + } + case TK_ID: { + sqlite3TreeViewLine(pView,"ID \"%w\"", pExpr->u.zToken); + break; + } +#ifndef SQLITE_OMIT_CAST + case TK_CAST: { + /* Expressions of the form: CAST(pLeft AS token) */ + sqlite3TreeViewLine(pView,"CAST %Q", pExpr->u.zToken); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); + break; + } +#endif /* SQLITE_OMIT_CAST */ + case TK_LT: zBinOp = "LT"; break; + case TK_LE: zBinOp = "LE"; break; + case TK_GT: zBinOp = "GT"; break; + case TK_GE: zBinOp = "GE"; break; + case TK_NE: zBinOp = "NE"; break; + case TK_EQ: zBinOp = "EQ"; break; + case TK_IS: zBinOp = "IS"; break; + case TK_ISNOT: zBinOp = "ISNOT"; break; + case TK_AND: zBinOp = "AND"; break; + case TK_OR: zBinOp = "OR"; break; + case TK_PLUS: zBinOp = "ADD"; break; + case TK_STAR: zBinOp = "MUL"; break; + case TK_MINUS: zBinOp = "SUB"; break; + case TK_REM: zBinOp = "REM"; break; + case TK_BITAND: zBinOp = "BITAND"; break; + case TK_BITOR: zBinOp = "BITOR"; break; + case TK_SLASH: zBinOp = "DIV"; break; + case TK_LSHIFT: zBinOp = "LSHIFT"; break; + case TK_RSHIFT: zBinOp = "RSHIFT"; break; + case TK_CONCAT: zBinOp = "CONCAT"; break; + case TK_DOT: zBinOp = "DOT"; break; + + case TK_UMINUS: zUniOp = "UMINUS"; break; + case TK_UPLUS: zUniOp = "UPLUS"; break; + case TK_BITNOT: zUniOp = "BITNOT"; break; + case TK_NOT: zUniOp = "NOT"; break; + case TK_ISNULL: zUniOp = "ISNULL"; break; + case TK_NOTNULL: zUniOp = "NOTNULL"; break; + + case TK_SPAN: { + sqlite3TreeViewLine(pView, "SPAN %Q", pExpr->u.zToken); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); + break; + } + + case TK_COLLATE: { + sqlite3TreeViewLine(pView, "COLLATE %Q", pExpr->u.zToken); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); + break; + } + + case TK_AGG_FUNCTION: + case TK_FUNCTION: { + ExprList *pFarg; /* List of function arguments */ + if( ExprHasProperty(pExpr, EP_TokenOnly) ){ + pFarg = 0; + }else{ + pFarg = pExpr->x.pList; + } + if( pExpr->op==TK_AGG_FUNCTION ){ + sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q", + pExpr->op2, pExpr->u.zToken); + }else{ + sqlite3TreeViewLine(pView, "FUNCTION %Q", pExpr->u.zToken); + } + if( pFarg ){ + sqlite3TreeViewExprList(pView, pFarg, 0, 0); + } + break; + } +#ifndef SQLITE_OMIT_SUBQUERY + case TK_EXISTS: { + sqlite3TreeViewLine(pView, "EXISTS-expr"); + sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); + break; + } + case TK_SELECT: { + sqlite3TreeViewLine(pView, "SELECT-expr"); + sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); + break; + } + case TK_IN: { + sqlite3TreeViewLine(pView, "IN"); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 1); + if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0); + }else{ + sqlite3TreeViewExprList(pView, pExpr->x.pList, 0, 0); + } + break; + } +#endif /* SQLITE_OMIT_SUBQUERY */ + + /* + ** x BETWEEN y AND z + ** + ** This is equivalent to + ** + ** x>=y AND x<=z + ** + ** X is stored in pExpr->pLeft. + ** Y is stored in pExpr->pList->a[0].pExpr. + ** Z is stored in pExpr->pList->a[1].pExpr. + */ + case TK_BETWEEN: { + Expr *pX = pExpr->pLeft; + Expr *pY = pExpr->x.pList->a[0].pExpr; + Expr *pZ = pExpr->x.pList->a[1].pExpr; + sqlite3TreeViewLine(pView, "BETWEEN"); + sqlite3TreeViewExpr(pView, pX, 1); + sqlite3TreeViewExpr(pView, pY, 1); + sqlite3TreeViewExpr(pView, pZ, 0); + break; + } + case TK_TRIGGER: { + /* If the opcode is TK_TRIGGER, then the expression is a reference + ** to a column in the new.* or old.* pseudo-tables available to + ** trigger programs. In this case Expr.iTable is set to 1 for the + ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn + ** is set to the column of the pseudo-table to read, or to -1 to + ** read the rowid field. + */ + sqlite3TreeViewLine(pView, "%s(%d)", + pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn); + break; + } + case TK_CASE: { + sqlite3TreeViewLine(pView, "CASE"); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 1); + sqlite3TreeViewExprList(pView, pExpr->x.pList, 0, 0); + break; + } +#ifndef SQLITE_OMIT_TRIGGER + case TK_RAISE: { + const char *zType = "unk"; + switch( pExpr->affinity ){ + case OE_Rollback: zType = "rollback"; break; + case OE_Abort: zType = "abort"; break; + case OE_Fail: zType = "fail"; break; + case OE_Ignore: zType = "ignore"; break; + } + sqlite3TreeViewLine(pView, "RAISE %s(%Q)", zType, pExpr->u.zToken); + break; + } +#endif + case TK_MATCH: { + sqlite3TreeViewLine(pView, "MATCH {%d:%d}%s", + pExpr->iTable, pExpr->iColumn, zFlgs); + sqlite3TreeViewExpr(pView, pExpr->pRight, 0); + break; + } + case TK_VECTOR: { + sqlite3TreeViewBareExprList(pView, pExpr->x.pList, "VECTOR"); + break; + } + case TK_SELECT_COLUMN: { + sqlite3TreeViewLine(pView, "SELECT-COLUMN %d", pExpr->iColumn); + sqlite3TreeViewSelect(pView, pExpr->pLeft->x.pSelect, 0); + break; + } + default: { + sqlite3TreeViewLine(pView, "op=%d", pExpr->op); + break; + } + } + if( zBinOp ){ + sqlite3TreeViewLine(pView, "%s%s", zBinOp, zFlgs); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 1); + sqlite3TreeViewExpr(pView, pExpr->pRight, 0); + }else if( zUniOp ){ + sqlite3TreeViewLine(pView, "%s%s", zUniOp, zFlgs); + sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); + } + sqlite3TreeViewPop(pView); +} + + +/* +** Generate a human-readable explanation of an expression list. +*/ +SQLITE_PRIVATE void sqlite3TreeViewBareExprList( + TreeView *pView, + const ExprList *pList, + const char *zLabel +){ + if( zLabel==0 || zLabel[0]==0 ) zLabel = "LIST"; + if( pList==0 ){ + sqlite3TreeViewLine(pView, "%s (empty)", zLabel); + }else{ + int i; + sqlite3TreeViewLine(pView, "%s", zLabel); + for(i=0; inExpr; i++){ + int j = pList->a[i].u.x.iOrderByCol; + if( j ){ + sqlite3TreeViewPush(pView, 0); + sqlite3TreeViewLine(pView, "iOrderByCol=%d", j); + } + sqlite3TreeViewExpr(pView, pList->a[i].pExpr, inExpr-1); + if( j ) sqlite3TreeViewPop(pView); + } + } +} +SQLITE_PRIVATE void sqlite3TreeViewExprList( + TreeView *pView, + const ExprList *pList, + u8 moreToFollow, + const char *zLabel +){ + pView = sqlite3TreeViewPush(pView, moreToFollow); + sqlite3TreeViewBareExprList(pView, pList, zLabel); + sqlite3TreeViewPop(pView); +} + +#endif /* SQLITE_DEBUG */ + +/************** End of treeview.c ********************************************/ /************** Begin file random.c ******************************************/ /* ** 2001 September 15 @@ -20996,6 +26658,7 @@ SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, u32 bFlags, const char *zFormat, ** Random numbers are used by some of the database backends in order ** to generate random integer keys for tables or random filenames. */ +/* #include "sqliteInt.h" */ /* All threads share a single random number generator. @@ -21028,11 +26691,19 @@ SQLITE_API void sqlite3_randomness(int N, void *pBuf){ #endif #if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PRNG); - sqlite3_mutex_enter(mutex); + sqlite3_mutex *mutex; #endif - if( N<=0 ){ +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return; +#endif + +#if SQLITE_THREADSAFE + mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PRNG); +#endif + + sqlite3_mutex_enter(mutex); + if( N<=0 || pBuf==0 ){ wsdPrng.isInit = 0; sqlite3_mutex_leave(mutex); return; @@ -21078,7 +26749,7 @@ SQLITE_API void sqlite3_randomness(int N, void *pBuf){ sqlite3_mutex_leave(mutex); } -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE /* ** For testing purposes, we sometimes want to preserve the state of ** PRNG and restore the PRNG to its saved state at a later time, or @@ -21103,9 +26774,286 @@ SQLITE_PRIVATE void sqlite3PrngRestoreState(void){ sizeof(sqlite3Prng) ); } -#endif /* SQLITE_OMIT_BUILTIN_TEST */ +#endif /* SQLITE_UNTESTABLE */ /************** End of random.c **********************************************/ +/************** Begin file threads.c *****************************************/ +/* +** 2012 July 21 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file presents a simple cross-platform threading interface for +** use internally by SQLite. +** +** A "thread" can be created using sqlite3ThreadCreate(). This thread +** runs independently of its creator until it is joined using +** sqlite3ThreadJoin(), at which point it terminates. +** +** Threads do not have to be real. It could be that the work of the +** "thread" is done by the main thread at either the sqlite3ThreadCreate() +** or sqlite3ThreadJoin() call. This is, in fact, what happens in +** single threaded systems. Nothing in SQLite requires multiple threads. +** This interface exists so that applications that want to take advantage +** of multiple cores can do so, while also allowing applications to stay +** single-threaded if desired. +*/ +/* #include "sqliteInt.h" */ +#if SQLITE_OS_WIN +/* # include "os_win.h" */ +#endif + +#if SQLITE_MAX_WORKER_THREADS>0 + +/********************************* Unix Pthreads ****************************/ +#if SQLITE_OS_UNIX && defined(SQLITE_MUTEX_PTHREADS) && SQLITE_THREADSAFE>0 + +#define SQLITE_THREADS_IMPLEMENTED 1 /* Prevent the single-thread code below */ +/* #include */ + +/* A running thread */ +struct SQLiteThread { + pthread_t tid; /* Thread ID */ + int done; /* Set to true when thread finishes */ + void *pOut; /* Result returned by the thread */ + void *(*xTask)(void*); /* The thread routine */ + void *pIn; /* Argument to the thread */ +}; + +/* Create a new thread */ +SQLITE_PRIVATE int sqlite3ThreadCreate( + SQLiteThread **ppThread, /* OUT: Write the thread object here */ + void *(*xTask)(void*), /* Routine to run in a separate thread */ + void *pIn /* Argument passed into xTask() */ +){ + SQLiteThread *p; + int rc; + + assert( ppThread!=0 ); + assert( xTask!=0 ); + /* This routine is never used in single-threaded mode */ + assert( sqlite3GlobalConfig.bCoreMutex!=0 ); + + *ppThread = 0; + p = sqlite3Malloc(sizeof(*p)); + if( p==0 ) return SQLITE_NOMEM_BKPT; + memset(p, 0, sizeof(*p)); + p->xTask = xTask; + p->pIn = pIn; + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + ** function that returns SQLITE_ERROR when passed the argument 200, that + ** forces worker threads to run sequentially and deterministically + ** for testing purposes. */ + if( sqlite3FaultSim(200) ){ + rc = 1; + }else{ + rc = pthread_create(&p->tid, 0, xTask, pIn); + } + if( rc ){ + p->done = 1; + p->pOut = xTask(pIn); + } + *ppThread = p; + return SQLITE_OK; +} + +/* Get the results of the thread */ +SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){ + int rc; + + assert( ppOut!=0 ); + if( NEVER(p==0) ) return SQLITE_NOMEM_BKPT; + if( p->done ){ + *ppOut = p->pOut; + rc = SQLITE_OK; + }else{ + rc = pthread_join(p->tid, ppOut) ? SQLITE_ERROR : SQLITE_OK; + } + sqlite3_free(p); + return rc; +} + +#endif /* SQLITE_OS_UNIX && defined(SQLITE_MUTEX_PTHREADS) */ +/******************************** End Unix Pthreads *************************/ + + +/********************************* Win32 Threads ****************************/ +#if SQLITE_OS_WIN_THREADS + +#define SQLITE_THREADS_IMPLEMENTED 1 /* Prevent the single-thread code below */ +#include + +/* A running thread */ +struct SQLiteThread { + void *tid; /* The thread handle */ + unsigned id; /* The thread identifier */ + void *(*xTask)(void*); /* The routine to run as a thread */ + void *pIn; /* Argument to xTask */ + void *pResult; /* Result of xTask */ +}; + +/* Thread procedure Win32 compatibility shim */ +static unsigned __stdcall sqlite3ThreadProc( + void *pArg /* IN: Pointer to the SQLiteThread structure */ +){ + SQLiteThread *p = (SQLiteThread *)pArg; + + assert( p!=0 ); +#if 0 + /* + ** This assert appears to trigger spuriously on certain + ** versions of Windows, possibly due to _beginthreadex() + ** and/or CreateThread() not fully setting their thread + ** ID parameter before starting the thread. + */ + assert( p->id==GetCurrentThreadId() ); +#endif + assert( p->xTask!=0 ); + p->pResult = p->xTask(p->pIn); + + _endthreadex(0); + return 0; /* NOT REACHED */ +} + +/* Create a new thread */ +SQLITE_PRIVATE int sqlite3ThreadCreate( + SQLiteThread **ppThread, /* OUT: Write the thread object here */ + void *(*xTask)(void*), /* Routine to run in a separate thread */ + void *pIn /* Argument passed into xTask() */ +){ + SQLiteThread *p; + + assert( ppThread!=0 ); + assert( xTask!=0 ); + *ppThread = 0; + p = sqlite3Malloc(sizeof(*p)); + if( p==0 ) return SQLITE_NOMEM_BKPT; + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + ** function that returns SQLITE_ERROR when passed the argument 200, that + ** forces worker threads to run sequentially and deterministically + ** (via the sqlite3FaultSim() term of the conditional) for testing + ** purposes. */ + if( sqlite3GlobalConfig.bCoreMutex==0 || sqlite3FaultSim(200) ){ + memset(p, 0, sizeof(*p)); + }else{ + p->xTask = xTask; + p->pIn = pIn; + p->tid = (void*)_beginthreadex(0, 0, sqlite3ThreadProc, p, 0, &p->id); + if( p->tid==0 ){ + memset(p, 0, sizeof(*p)); + } + } + if( p->xTask==0 ){ + p->id = GetCurrentThreadId(); + p->pResult = xTask(pIn); + } + *ppThread = p; + return SQLITE_OK; +} + +SQLITE_PRIVATE DWORD sqlite3Win32Wait(HANDLE hObject); /* os_win.c */ + +/* Get the results of the thread */ +SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){ + DWORD rc; + BOOL bRc; + + assert( ppOut!=0 ); + if( NEVER(p==0) ) return SQLITE_NOMEM_BKPT; + if( p->xTask==0 ){ + /* assert( p->id==GetCurrentThreadId() ); */ + rc = WAIT_OBJECT_0; + assert( p->tid==0 ); + }else{ + assert( p->id!=0 && p->id!=GetCurrentThreadId() ); + rc = sqlite3Win32Wait((HANDLE)p->tid); + assert( rc!=WAIT_IO_COMPLETION ); + bRc = CloseHandle((HANDLE)p->tid); + assert( bRc ); + } + if( rc==WAIT_OBJECT_0 ) *ppOut = p->pResult; + sqlite3_free(p); + return (rc==WAIT_OBJECT_0) ? SQLITE_OK : SQLITE_ERROR; +} + +#endif /* SQLITE_OS_WIN_THREADS */ +/******************************** End Win32 Threads *************************/ + + +/********************************* Single-Threaded **************************/ +#ifndef SQLITE_THREADS_IMPLEMENTED +/* +** This implementation does not actually create a new thread. It does the +** work of the thread in the main thread, when either the thread is created +** or when it is joined +*/ + +/* A running thread */ +struct SQLiteThread { + void *(*xTask)(void*); /* The routine to run as a thread */ + void *pIn; /* Argument to xTask */ + void *pResult; /* Result of xTask */ +}; + +/* Create a new thread */ +SQLITE_PRIVATE int sqlite3ThreadCreate( + SQLiteThread **ppThread, /* OUT: Write the thread object here */ + void *(*xTask)(void*), /* Routine to run in a separate thread */ + void *pIn /* Argument passed into xTask() */ +){ + SQLiteThread *p; + + assert( ppThread!=0 ); + assert( xTask!=0 ); + *ppThread = 0; + p = sqlite3Malloc(sizeof(*p)); + if( p==0 ) return SQLITE_NOMEM_BKPT; + if( (SQLITE_PTR_TO_INT(p)/17)&1 ){ + p->xTask = xTask; + p->pIn = pIn; + }else{ + p->xTask = 0; + p->pResult = xTask(pIn); + } + *ppThread = p; + return SQLITE_OK; +} + +/* Get the results of the thread */ +SQLITE_PRIVATE int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){ + + assert( ppOut!=0 ); + if( NEVER(p==0) ) return SQLITE_NOMEM_BKPT; + if( p->xTask ){ + *ppOut = p->xTask(p->pIn); + }else{ + *ppOut = p->pResult; + } + sqlite3_free(p); + +#if defined(SQLITE_TEST) + { + void *pTstAlloc = sqlite3Malloc(10); + if (!pTstAlloc) return SQLITE_NOMEM_BKPT; + sqlite3_free(pTstAlloc); + } +#endif + + return SQLITE_OK; +} + +#endif /* !defined(SQLITE_THREADS_IMPLEMENTED) */ +/****************************** End Single-Threaded *************************/ +#endif /* SQLITE_MAX_WORKER_THREADS>0 */ + +/************** End of threads.c *********************************************/ /************** Begin file utf.c *********************************************/ /* ** 2004 April 13 @@ -21142,15 +27090,17 @@ SQLITE_PRIVATE void sqlite3PrngRestoreState(void){ ** 0xfe 0xff big-endian utf-16 follows ** */ +/* #include "sqliteInt.h" */ /* #include */ +/* #include "vdbeInt.h" */ -#ifndef SQLITE_AMALGAMATION +#if !defined(SQLITE_AMALGAMATION) && SQLITE_BYTEORDER==0 /* ** The following constant value is used by the SQLITE_BIGENDIAN and ** SQLITE_LITTLEENDIAN macros. */ SQLITE_PRIVATE const int sqlite3one = 1; -#endif /* SQLITE_AMALGAMATION */ +#endif /* SQLITE_AMALGAMATION && SQLITE_BYTEORDER==0 */ /* ** This lookup table is used to help decode the first byte of @@ -21255,8 +27205,8 @@ static const unsigned char sqlite3Utf8Trans1[] = { ** and rendered as themselves even though they are technically ** invalid characters. ** -** * This routine accepts an infinite number of different UTF8 encodings -** for unicode values 0x80 and greater. It do not change over-length +** * This routine accepts over-length UTF8 encodings +** for unicode values 0x80 and greater. It does not change over-length ** encodings to 0xfffd as some systems recommend. */ #define READ_UTF8(zIn, zTerm, c) \ @@ -21306,7 +27256,7 @@ SQLITE_PRIVATE u32 sqlite3Utf8Read( ** desiredEnc. It is an error if the string is already of the desired ** encoding, or if *pMem does not contain a string value. */ -SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ +SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ int len; /* Maximum length of output string in bytes */ unsigned char *zOut; /* Output buffer */ unsigned char *zIn; /* Input iterator */ @@ -21338,7 +27288,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ rc = sqlite3VdbeMemMakeWriteable(pMem); if( rc!=SQLITE_OK ){ assert( rc==SQLITE_NOMEM ); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } zIn = (u8*)pMem->z; zTerm = &zIn[pMem->n&~1]; @@ -21380,7 +27330,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ zTerm = &zIn[pMem->n]; zOut = sqlite3DbMallocRaw(pMem->db, len); if( !zOut ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } z = zOut; @@ -21421,12 +27371,13 @@ SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){ *z = 0; assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len ); + c = pMem->flags; sqlite3VdbeMemRelease(pMem); - pMem->flags &= ~(MEM_Static|MEM_Dyn|MEM_Ephem); + pMem->flags = MEM_Str|MEM_Term|(c&(MEM_AffMask|MEM_Subtype)); pMem->enc = desiredEnc; - pMem->flags |= (MEM_Term|MEM_Dyn); pMem->z = (char*)zOut; pMem->zMalloc = pMem->z; + pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->z); translate_out: #if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG) @@ -21552,7 +27503,6 @@ SQLITE_PRIVATE char *sqlite3Utf16to8(sqlite3 *db, const void *z, int nByte, u8 e } assert( (m.flags & MEM_Term)!=0 || db->mallocFailed ); assert( (m.flags & MEM_Str)!=0 || db->mallocFailed ); - assert( (m.flags & MEM_Dyn)!=0 || db->mallocFailed ); assert( m.z || db->mallocFailed ); return m.z; } @@ -21655,8 +27605,9 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){ ** strings, and stuff like that. ** */ +/* #include "sqliteInt.h" */ /* #include */ -#ifdef SQLITE_HAVE_ISNAN +#if HAVE_ISNAN || SQLITE_HAVE_ISNAN # include #endif @@ -21670,6 +27621,24 @@ SQLITE_PRIVATE void sqlite3Coverage(int x){ } #endif +/* +** Give a callback to the test harness that can be used to simulate faults +** in places where it is difficult or expensive to do so purely by means +** of inputs. +** +** The intent of the integer argument is to let the fault simulator know +** which of multiple sqlite3FaultSim() calls has been hit. +** +** Return whatever integer value the test callback returns, or return +** SQLITE_OK if no test callback is installed. +*/ +#ifndef SQLITE_UNTESTABLE +SQLITE_PRIVATE int sqlite3FaultSim(int iTest){ + int (*xCallback)(int) = sqlite3GlobalConfig.xTestCallback; + return xCallback ? xCallback(iTest) : SQLITE_OK; +} +#endif + #ifndef SQLITE_OMIT_FLOATING_POINT /* ** Return true if the floating point value is Not a Number (NaN). @@ -21679,7 +27648,7 @@ SQLITE_PRIVATE void sqlite3Coverage(int x){ */ SQLITE_PRIVATE int sqlite3IsNaN(double x){ int rc; /* The value return */ -#if !defined(SQLITE_HAVE_ISNAN) +#if !SQLITE_HAVE_ISNAN && !HAVE_ISNAN /* ** Systems that support the isnan() library function should probably ** make use of it by compiling with -DSQLITE_HAVE_ISNAN. But we have @@ -21709,9 +27678,9 @@ SQLITE_PRIVATE int sqlite3IsNaN(double x){ volatile double y = x; volatile double z = y; rc = (y!=z); -#else /* if defined(SQLITE_HAVE_ISNAN) */ +#else /* if HAVE_ISNAN */ rc = isnan(x); -#endif /* SQLITE_HAVE_ISNAN */ +#endif /* HAVE_ISNAN */ testcase( rc ); return rc; } @@ -21726,10 +27695,53 @@ SQLITE_PRIVATE int sqlite3IsNaN(double x){ ** than 1GiB) the value returned might be less than the true string length. */ SQLITE_PRIVATE int sqlite3Strlen30(const char *z){ - const char *z2 = z; if( z==0 ) return 0; - while( *z2 ){ z2++; } - return 0x3fffffff & (int)(z2 - z); + return 0x3fffffff & (int)strlen(z); +} + +/* +** Return the declared type of a column. Or return zDflt if the column +** has no declared type. +** +** The column type is an extra string stored after the zero-terminator on +** the column name if and only if the COLFLAG_HASTYPE flag is set. +*/ +SQLITE_PRIVATE char *sqlite3ColumnType(Column *pCol, char *zDflt){ + if( (pCol->colFlags & COLFLAG_HASTYPE)==0 ) return zDflt; + return pCol->zName + strlen(pCol->zName) + 1; +} + +/* +** Helper function for sqlite3Error() - called rarely. Broken out into +** a separate routine to avoid unnecessary register saves on entry to +** sqlite3Error(). +*/ +static SQLITE_NOINLINE void sqlite3ErrorFinish(sqlite3 *db, int err_code){ + if( db->pErr ) sqlite3ValueSetNull(db->pErr); + sqlite3SystemError(db, err_code); +} + +/* +** Set the current error code to err_code and clear any prior error message. +** Also set iSysErrno (by calling sqlite3System) if the err_code indicates +** that would be appropriate. +*/ +SQLITE_PRIVATE void sqlite3Error(sqlite3 *db, int err_code){ + assert( db!=0 ); + db->errCode = err_code; + if( err_code || db->pErr ) sqlite3ErrorFinish(db, err_code); +} + +/* +** Load the sqlite3.iSysErrno field if that is an appropriate thing +** to do based on the SQLite error code in rc. +*/ +SQLITE_PRIVATE void sqlite3SystemError(sqlite3 *db, int rc){ + if( rc==SQLITE_IOERR_NOMEM ) return; + rc &= 0xff; + if( rc==SQLITE_CANTOPEN || rc==SQLITE_IOERR ){ + db->iSysErrno = sqlite3OsGetLastError(db->pVfs); + } } /* @@ -21753,18 +27765,19 @@ SQLITE_PRIVATE int sqlite3Strlen30(const char *z){ ** should be called with err_code set to SQLITE_OK and zFormat set ** to NULL. */ -SQLITE_PRIVATE void sqlite3Error(sqlite3 *db, int err_code, const char *zFormat, ...){ +SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3 *db, int err_code, const char *zFormat, ...){ assert( db!=0 ); db->errCode = err_code; - if( zFormat && (db->pErr || (db->pErr = sqlite3ValueNew(db))!=0) ){ + sqlite3SystemError(db, err_code); + if( zFormat==0 ){ + sqlite3Error(db, err_code); + }else if( db->pErr || (db->pErr = sqlite3ValueNew(db))!=0 ){ char *z; va_list ap; va_start(ap, zFormat); z = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); sqlite3ValueSetStr(db->pErr, -1, z, SQLITE_UTF8, SQLITE_DYNAMIC); - }else if( db->pErr ){ - sqlite3ValueSetNull(db->pErr); } } @@ -21778,12 +27791,12 @@ SQLITE_PRIVATE void sqlite3Error(sqlite3 *db, int err_code, const char *zFormat, ** %T Insert a token ** %S Insert the first element of a SrcList ** -** This function should be used to report any error that occurs whilst +** This function should be used to report any error that occurs while ** compiling an SQL statement (i.e. within sqlite3_prepare()). The ** last thing the sqlite3_prepare() function does is copy the error ** stored by this function into the database handle using sqlite3Error(). -** Function sqlite3Error() should be used during statement execution -** (sqlite3_step() etc.). +** Functions sqlite3Error() or sqlite3ErrorWithMsg() should be used +** during statement execution (sqlite3_step() etc.). */ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){ char *zMsg; @@ -21816,21 +27829,16 @@ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){ ** occur. ** ** 2002-Feb-14: This routine is extended to remove MS-Access style -** brackets from around identifers. For example: "[a-b-c]" becomes +** brackets from around identifiers. For example: "[a-b-c]" becomes ** "a-b-c". */ -SQLITE_PRIVATE int sqlite3Dequote(char *z){ +SQLITE_PRIVATE void sqlite3Dequote(char *z){ char quote; int i, j; - if( z==0 ) return -1; + if( z==0 ) return; quote = z[0]; - switch( quote ){ - case '\'': break; - case '"': break; - case '`': break; /* For MySQL compatibility */ - case '[': quote = ']'; break; /* For MS SqlServer compatibility */ - default: return -1; - } + if( !sqlite3Isquote(quote) ) return; + if( quote=='[' ) quote = ']'; for(i=1, j=0;; i++){ assert( z[i] ); if( z[i]==quote ){ @@ -21845,7 +27853,14 @@ SQLITE_PRIVATE int sqlite3Dequote(char *z){ } } z[j] = 0; - return j; +} + +/* +** Generate a Token object from a string +*/ +SQLITE_PRIVATE void sqlite3TokenInit(Token *p, char *z){ + p->z = z; + p->n = sqlite3Strlen30(z); } /* Convenient short-hand */ @@ -21862,14 +27877,33 @@ SQLITE_PRIVATE int sqlite3Dequote(char *z){ ** independence" that SQLite uses internally when comparing identifiers. */ SQLITE_API int sqlite3_stricmp(const char *zLeft, const char *zRight){ - register unsigned char *a, *b; + if( zLeft==0 ){ + return zRight ? -1 : 0; + }else if( zRight==0 ){ + return 1; + } + return sqlite3StrICmp(zLeft, zRight); +} +SQLITE_PRIVATE int sqlite3StrICmp(const char *zLeft, const char *zRight){ + unsigned char *a, *b; + int c; a = (unsigned char *)zLeft; b = (unsigned char *)zRight; - while( *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; } - return UpperToLower[*a] - UpperToLower[*b]; + for(;;){ + c = (int)UpperToLower[*a] - (int)UpperToLower[*b]; + if( c || *a==0 ) break; + a++; + b++; + } + return c; } SQLITE_API int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){ register unsigned char *a, *b; + if( zLeft==0 ){ + return zRight ? -1 : 0; + }else if( zRight==0 ){ + return 1; + } a = (unsigned char *)zLeft; b = (unsigned char *)zRight; while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; } @@ -21911,7 +27945,7 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en int eValid = 1; /* True exponent is either not used or is well-formed */ double result; int nDigits = 0; - int nonNum = 0; + int nonNum = 0; /* True if input contains UTF16 with high byte non-zero */ assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE ); *pResult = 0.0; /* Default return value, in case of an error */ @@ -21924,7 +27958,7 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); for(i=3-enc; i=zEnd ) goto do_atof_calc; @@ -21972,7 +28004,12 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en if( *z=='e' || *z=='E' ){ z+=incr; eValid = 0; - if( z>=zEnd ) goto do_atof_calc; + + /* This branch is needed to avoid a (harmless) buffer overread. The + ** special comment alerts the mutation tester that the correct answer + ** is obtained even if the branch is omitted */ + if( z>=zEnd ) goto do_atof_calc; /*PREVENTS-HARMLESS-OVERREAD*/ + /* get sign of exponent */ if( *z=='-' ){ esign = -1; @@ -21989,9 +28026,7 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en } /* skip trailing spaces */ - if( nDigits && eValid ){ - while( z0 ){ - while( s<(LARGEST_INT64/10) && e>0 ) e--,s*=10; - }else{ - while( !(s%10) && e>0 ) e--,s/=10; + /* Attempt to reduce exponent. + ** + ** Branches that are not required for the correct answer but which only + ** help to obtain the correct answer faster are marked with special + ** comments, as a hint to the mutation tester. + */ + while( e>0 ){ /*OPTIMIZATION-IF-TRUE*/ + if( esign>0 ){ + if( s>=(LARGEST_INT64/10) ) break; /*OPTIMIZATION-IF-FALSE*/ + s *= 10; + }else{ + if( s%10!=0 ) break; /*OPTIMIZATION-IF-FALSE*/ + s /= 10; + } + e--; } /* adjust the sign of significand */ s = sign<0 ? -s : s; - /* if exponent, scale significand as appropriate - ** and store in result. */ - if( e ){ + if( e==0 ){ /*OPTIMIZATION-IF-TRUE*/ + result = (double)s; + }else{ LONGDOUBLE_TYPE scale = 1.0; #ifndef __vax__ /* attempt to handle extremely small/large numbers better */ - if( e>307 && e<342 ){ - while( e%308 ) { scale *= 1.0e+1; e -= 1; } - if( esign<0 ){ - result = s / scale; - result /= SQLITE_HUGE_DBL; - }else{ - result = s * scale; - result *= SQLITE_HUGE_DBL; - } - }else if( e>=342 ){ - if( esign<0 ){ - result = 0.0*s; - }else{ - result = SQLITE_HUGE_DBL*SQLITE_HUGE_DBL*s; /* Infinity */ + if( e>307 ){ /*OPTIMIZATION-IF-TRUE*/ + if( e<342 ){ /*OPTIMIZATION-IF-TRUE*/ + while( e%308 ) { scale *= 1.0e+1; e -= 1; } + if( esign<0 ){ + result = s / scale; + result /= 1.0e+308; + }else{ + result = s * scale; + result *= 1.0e+308; + } + }else{ assert( e>=342 ); + if( esign<0 ){ + result = 0.0*s; + }else{ + result = 1e308*1e308*s; /* Infinity */ + } } }else #endif @@ -22053,8 +28098,6 @@ do_atof_calc: result = s * scale; } } - } else { - result = (double)s; } } @@ -22062,7 +28105,7 @@ do_atof_calc: *pResult = result; /* return true if number and no extra non-whitespace chracters after */ - return z>=zEnd && nDigits>0 && eValid && nonNum==0; + return z==zEnd && nDigits>0 && eValid && nonNum==0; #else return !sqlite3Atoi64(z, pResult, length, enc); #endif /* SQLITE_OMIT_FLOATING_POINT */ @@ -22099,9 +28142,9 @@ static int compare2pow63(const char *zNum, int incr){ return c; } - /* -** Convert zNum to a 64-bit signed integer. +** Convert zNum to a 64-bit signed integer. zNum must be decimal. This +** routine does *not* accept hexadecimal notation. ** ** If the zNum value is representable as a 64-bit twos-complement ** integer, then write that value into *pNum and return 0. @@ -22124,7 +28167,7 @@ SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc int neg = 0; /* assume positive */ int i; int c = 0; - int nonNum = 0; + int nonNum = 0; /* True if input contains UTF16 with high byte non-zero */ const char *zStart; const char *zEnd = zNum + length; assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE ); @@ -22135,7 +28178,7 @@ SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); for(i=3-enc; i19*incr || nonNum ){ + if( &zNum[i]19*incr /* Too many digits */ + || nonNum /* UTF16 with high-order bytes non-zero */ + ){ /* zNum is empty or contains non-numeric text or is longer ** than 19 digits (thus guaranteeing that it is too large) */ return 1; @@ -22189,10 +28236,43 @@ SQLITE_PRIVATE int sqlite3Atoi64(const char *zNum, i64 *pNum, int length, u8 enc } } +/* +** Transform a UTF-8 integer literal, in either decimal or hexadecimal, +** into a 64-bit signed integer. This routine accepts hexadecimal literals, +** whereas sqlite3Atoi64() does not. +** +** Returns: +** +** 0 Successful transformation. Fits in a 64-bit signed integer. +** 1 Integer too large for a 64-bit signed integer or is malformed +** 2 Special case of 9223372036854775808 +*/ +SQLITE_PRIVATE int sqlite3DecOrHexToI64(const char *z, i64 *pOut){ +#ifndef SQLITE_OMIT_HEX_INTEGER + if( z[0]=='0' + && (z[1]=='x' || z[1]=='X') + ){ + u64 u = 0; + int i, k; + for(i=2; z[i]=='0'; i++){} + for(k=i; sqlite3Isxdigit(z[k]); k++){ + u = u*16 + sqlite3HexToInt(z[k]); + } + memcpy(pOut, &u, 8); + return (z[k]==0 && k-i<=16) ? 0 : 1; + }else +#endif /* SQLITE_OMIT_HEX_INTEGER */ + { + return sqlite3Atoi64(z, pOut, sqlite3Strlen30(z), SQLITE_UTF8); + } +} + /* ** If zNum represents an integer that will fit in 32-bits, then set ** *pValue to that integer and return true. Otherwise return false. ** +** This routine accepts both decimal and hexadecimal notation for integers. +** ** Any non-numeric characters that following zNum are ignored. ** This is different from sqlite3Atoi64() which requires the ** input number to be zero-terminated. @@ -22207,6 +28287,25 @@ SQLITE_PRIVATE int sqlite3GetInt32(const char *zNum, int *pValue){ }else if( zNum[0]=='+' ){ zNum++; } +#ifndef SQLITE_OMIT_HEX_INTEGER + else if( zNum[0]=='0' + && (zNum[1]=='x' || zNum[1]=='X') + && sqlite3Isxdigit(zNum[2]) + ){ + u32 u = 0; + zNum += 2; + while( zNum[0]=='0' ) zNum++; + for(i=0; sqlite3Isxdigit(zNum[i]) && i<8; i++){ + u = u*16 + sqlite3HexToInt(zNum[i]); + } + if( (u&0x80000000)==0 && sqlite3Isxdigit(zNum[i])==0 ){ + memcpy(pValue, &u, 4); + return 1; + }else{ + return 0; + } + } +#endif while( zNum[0]=='0' ) zNum++; for(i=0; i<11 && (c = zNum[i] - '0')>=0 && c<=9; i++){ v = v*10 + c; @@ -22271,7 +28370,7 @@ SQLITE_PRIVATE int sqlite3Atoi(const char *z){ ** bit clear. Except, if we get to the 9th byte, it stores the full ** 8 bits and is the last byte. */ -SQLITE_PRIVATE int sqlite3PutVarint(unsigned char *p, u64 v){ +static int SQLITE_NOINLINE putVarint64(unsigned char *p, u64 v){ int i, j, n; u8 buf[10]; if( v & (((u64)0xff000000)<<32) ){ @@ -22295,28 +28394,17 @@ SQLITE_PRIVATE int sqlite3PutVarint(unsigned char *p, u64 v){ } return n; } - -/* -** This routine is a faster version of sqlite3PutVarint() that only -** works for 32-bit positive integers and which is optimized for -** the common case of small integers. A MACRO version, putVarint32, -** is provided which inlines the single-byte case. All code should use -** the MACRO version as this function assumes the single-byte case has -** already been handled. -*/ -SQLITE_PRIVATE int sqlite3PutVarint32(unsigned char *p, u32 v){ -#ifndef putVarint32 - if( (v & ~0x7f)==0 ){ - p[0] = v; +SQLITE_PRIVATE int sqlite3PutVarint(unsigned char *p, u64 v){ + if( v<=0x7f ){ + p[0] = v&0x7f; return 1; } -#endif - if( (v & ~0x3fff)==0 ){ - p[0] = (u8)((v>>7) | 0x80); - p[1] = (u8)(v & 0x7f); + if( v<=0x3fff ){ + p[0] = ((v>>7)&0x7f)|0x80; + p[1] = v&0x7f; return 2; } - return sqlite3PutVarint(p, v); + return putVarint64(p,v); } /* @@ -22409,7 +28497,8 @@ SQLITE_PRIVATE u8 sqlite3GetVarint(const unsigned char *p, u64 *v){ /* a: p0<<28 | p2<<14 | p4 (unmasked) */ if (!(a&0x80)) { - /* we can skip these cause they were (effectively) done above in calc'ing s */ + /* we can skip these cause they were (effectively) done above + ** while calculating s */ /* a &= (0x7f<<28)|(0x7f<<14)|(0x7f); */ /* b &= (0x7f<<14)|(0x7f); */ b = b<<7; @@ -22630,11 +28719,8 @@ SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){ ** 64-bit integer. */ SQLITE_PRIVATE int sqlite3VarintLen(u64 v){ - int i = 0; - do{ - i++; - v >>= 7; - }while( v!=0 && ALWAYS(i<9) ); + int i; + for(i=1; (v >>= 7)!=0; i++){ assert( i<10 ); } return i; } @@ -22643,14 +28729,38 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v){ ** Read or write a four-byte big-endian integer value. */ SQLITE_PRIVATE u32 sqlite3Get4byte(const u8 *p){ +#if SQLITE_BYTEORDER==4321 + u32 x; + memcpy(&x,p,4); + return x; +#elif SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + u32 x; + memcpy(&x,p,4); + return __builtin_bswap32(x); +#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + u32 x; + memcpy(&x,p,4); + return _byteswap_ulong(x); +#else testcase( p[0]&0x80 ); return ((unsigned)p[0]<<24) | (p[1]<<16) | (p[2]<<8) | p[3]; +#endif } SQLITE_PRIVATE void sqlite3Put4byte(unsigned char *p, u32 v){ +#if SQLITE_BYTEORDER==4321 + memcpy(p,&v,4); +#elif SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + u32 x = __builtin_bswap32(v); + memcpy(p,&x,4); +#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + u32 x = _byteswap_ulong(v); + memcpy(p,&x,4); +#else p[0] = (u8)(v>>24); p[1] = (u8)(v>>16); p[2] = (u8)(v>>8); p[3] = (u8)v; +#endif } @@ -22682,7 +28792,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){ char *zBlob; int i; - zBlob = (char *)sqlite3DbMallocRaw(db, n/2 + 1); + zBlob = (char *)sqlite3DbMallocRawNN(db, n/2 + 1); n--; if( zBlob ){ for(i=0; i=5004000 || CLANG_VERSION>=4000000 + return __builtin_add_overflow(*pA, iB, pA); +#else i64 iA = *pA; testcase( iA==0 ); testcase( iA==1 ); testcase( iB==-1 ); testcase( iB==0 ); @@ -22765,16 +28878,19 @@ SQLITE_PRIVATE int sqlite3AddInt64(i64 *pA, i64 iB){ testcase( iA>0 && LARGEST_INT64 - iA == iB ); testcase( iA>0 && LARGEST_INT64 - iA == iB - 1 ); if( iA>0 && LARGEST_INT64 - iA < iB ) return 1; - *pA += iB; }else{ testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 1 ); testcase( iA<0 && -(iA + LARGEST_INT64) == iB + 2 ); if( iA<0 && -(iA + LARGEST_INT64) > iB + 1 ) return 1; - *pA += iB; } + *pA += iB; return 0; +#endif } SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){ +#if GCC_VERSION>=5004000 || CLANG_VERSION>=4000000 + return __builtin_sub_overflow(*pA, iB, pA); +#else testcase( iB==SMALLEST_INT64+1 ); if( iB==SMALLEST_INT64 ){ testcase( (*pA)==(-1) ); testcase( (*pA)==0 ); @@ -22784,29 +28900,28 @@ SQLITE_PRIVATE int sqlite3SubInt64(i64 *pA, i64 iB){ }else{ return sqlite3AddInt64(pA, -iB); } +#endif } -#define TWOPOWER32 (((i64)1)<<32) -#define TWOPOWER31 (((i64)1)<<31) SQLITE_PRIVATE int sqlite3MulInt64(i64 *pA, i64 iB){ +#if GCC_VERSION>=5004000 || CLANG_VERSION>=4000000 + return __builtin_mul_overflow(*pA, iB, pA); +#else i64 iA = *pA; - i64 iA1, iA0, iB1, iB0, r; - - iA1 = iA/TWOPOWER32; - iA0 = iA % TWOPOWER32; - iB1 = iB/TWOPOWER32; - iB0 = iB % TWOPOWER32; - if( iA1*iB1 != 0 ) return 1; - assert( iA1*iB0==0 || iA0*iB1==0 ); - r = iA1*iB0 + iA0*iB1; - testcase( r==(-TWOPOWER31)-1 ); - testcase( r==(-TWOPOWER31) ); - testcase( r==TWOPOWER31 ); - testcase( r==TWOPOWER31-1 ); - if( r<(-TWOPOWER31) || r>=TWOPOWER31 ) return 1; - r *= TWOPOWER32; - if( sqlite3AddInt64(&r, iA0*iB0) ) return 1; - *pA = r; + if( iB>0 ){ + if( iA>LARGEST_INT64/iB ) return 1; + if( iA0 ){ + if( iBLARGEST_INT64/-iB ) return 1; + } + } + *pA = iA*iB; return 0; +#endif } /* @@ -22880,8 +28995,8 @@ SQLITE_PRIVATE LogEst sqlite3LogEstAdd(LogEst a, LogEst b){ } /* -** Convert an integer into a LogEst. In other words, compute a -** good approximatation for 10*log2(x). +** Convert an integer into a LogEst. In other words, compute an +** approximation for 10*log2(x). */ SQLITE_PRIVATE LogEst sqlite3LogEst(u64 x){ static LogEst a[] = { 0, 2, 3, 5, 6, 7, 8, 9 }; @@ -22890,7 +29005,7 @@ SQLITE_PRIVATE LogEst sqlite3LogEst(u64 x){ if( x<2 ) return 0; while( x<8 ){ y -= 10; x <<= 1; } }else{ - while( x>255 ){ y += 40; x >>= 4; } + while( x>255 ){ y += 40; x >>= 4; } /*OPTIMIZATION-IF-TRUE*/ while( x>15 ){ y += 10; x >>= 1; } } return a[x&7] + y - 10; @@ -22913,20 +29028,134 @@ SQLITE_PRIVATE LogEst sqlite3LogEstFromDouble(double x){ } #endif /* SQLITE_OMIT_VIRTUALTABLE */ +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ + defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ + defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) /* ** Convert a LogEst into an integer. +** +** Note that this routine is only used when one or more of various +** non-standard compile-time options is enabled. */ SQLITE_PRIVATE u64 sqlite3LogEstToInt(LogEst x){ u64 n; - if( x<10 ) return 1; n = x%10; x /= 10; if( n>=5 ) n -= 2; else if( n>=1 ) n -= 1; - if( x>=3 ){ - return x>60 ? (u64)LARGEST_INT64 : (n+8)<<(x-3); +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) || \ + defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) + if( x>60 ) return (u64)LARGEST_INT64; +#else + /* If only SQLITE_ENABLE_STAT3_OR_STAT4 is on, then the largest input + ** possible to this routine is 310, resulting in a maximum x of 31 */ + assert( x<=60 ); +#endif + return x>=3 ? (n+8)<<(x-3) : (n+8)>>(3-x); +} +#endif /* defined SCANSTAT or STAT4 or ESTIMATED_ROWS */ + +/* +** Add a new name/number pair to a VList. This might require that the +** VList object be reallocated, so return the new VList. If an OOM +** error occurs, the original VList returned and the +** db->mallocFailed flag is set. +** +** A VList is really just an array of integers. To destroy a VList, +** simply pass it to sqlite3DbFree(). +** +** The first integer is the number of integers allocated for the whole +** VList. The second integer is the number of integers actually used. +** Each name/number pair is encoded by subsequent groups of 3 or more +** integers. +** +** Each name/number pair starts with two integers which are the numeric +** value for the pair and the size of the name/number pair, respectively. +** The text name overlays one or more following integers. The text name +** is always zero-terminated. +** +** Conceptually: +** +** struct VList { +** int nAlloc; // Number of allocated slots +** int nUsed; // Number of used slots +** struct VListEntry { +** int iValue; // Value for this entry +** int nSlot; // Slots used by this entry +** // ... variable name goes here +** } a[0]; +** } +** +** During code generation, pointers to the variable names within the +** VList are taken. When that happens, nAlloc is set to zero as an +** indication that the VList may never again be enlarged, since the +** accompanying realloc() would invalidate the pointers. +*/ +SQLITE_PRIVATE VList *sqlite3VListAdd( + sqlite3 *db, /* The database connection used for malloc() */ + VList *pIn, /* The input VList. Might be NULL */ + const char *zName, /* Name of symbol to add */ + int nName, /* Bytes of text in zName */ + int iVal /* Value to associate with zName */ +){ + int nInt; /* number of sizeof(int) objects needed for zName */ + char *z; /* Pointer to where zName will be stored */ + int i; /* Index in pIn[] where zName is stored */ + + nInt = nName/4 + 3; + assert( pIn==0 || pIn[0]>=3 ); /* Verify ok to add new elements */ + if( pIn==0 || pIn[1]+nInt > pIn[0] ){ + /* Enlarge the allocation */ + int nAlloc = (pIn ? pIn[0]*2 : 10) + nInt; + VList *pOut = sqlite3DbRealloc(db, pIn, nAlloc*sizeof(int)); + if( pOut==0 ) return pIn; + if( pIn==0 ) pOut[1] = 2; + pIn = pOut; + pIn[0] = nAlloc; } - return (n+8)>>(3-x); + i = pIn[1]; + pIn[i] = iVal; + pIn[i+1] = nInt; + z = (char*)&pIn[i+2]; + pIn[1] = i+nInt; + assert( pIn[1]<=pIn[0] ); + memcpy(z, zName, nName); + z[nName] = 0; + return pIn; +} + +/* +** Return a pointer to the name of a variable in the given VList that +** has the value iVal. Or return a NULL if there is no such variable in +** the list +*/ +SQLITE_PRIVATE const char *sqlite3VListNumToName(VList *pIn, int iVal){ + int i, mx; + if( pIn==0 ) return 0; + mx = pIn[1]; + i = 2; + do{ + if( pIn[i]==iVal ) return (char*)&pIn[i+2]; + i += pIn[i+1]; + }while( i */ /* Turn bulk memory into a hash table object by initializing the @@ -22984,12 +29214,15 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash *pH){ /* ** The hashing function. */ -static unsigned int strHash(const char *z, int nKey){ +static unsigned int strHash(const char *z){ unsigned int h = 0; - assert( nKey>=0 ); - while( nKey > 0 ){ - h = (h<<3) ^ h ^ sqlite3UpperToLower[(unsigned char)*z++]; - nKey--; + unsigned char c; + while( (c = (unsigned char)*z++)!=0 ){ /*OPTIMIZATION-IF-TRUE*/ + /* Knuth multiplicative hashing. (Sorting & Searching, p. 510). + ** 0x9e3779b1 is 2654435761 which is the closest prime number to + ** (2**32)*golden_ratio, where golden_ratio = (sqrt(5) - 1)/2. */ + h += sqlite3UpperToLower[c]; + h *= 0x9e3779b1; } return h; } @@ -23061,7 +29294,7 @@ static int rehash(Hash *pH, unsigned int new_size){ pH->htsize = new_size = sqlite3MallocSize(new_ht)/sizeof(struct _ht); memset(new_ht, 0, new_size*sizeof(struct _ht)); for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - unsigned int h = strHash(elem->pKey, elem->nKey) % new_size; + unsigned int h = strHash(elem->pKey) % new_size; next_elem = elem->next; insertElement(pH, &new_ht[h], elem); } @@ -23069,28 +29302,33 @@ static int rehash(Hash *pH, unsigned int new_size){ } /* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. +** hash table that matches the given key. The hash for this key is +** also computed and returned in the *pH parameter. */ -static HashElem *findElementGivenHash( +static HashElem *findElementWithHash( const Hash *pH, /* The pH to be searched */ const char *pKey, /* The key we are searching for */ - int nKey, /* Bytes in key (not counting zero terminator) */ - unsigned int h /* The hash for this key. */ + unsigned int *pHash /* Write the hash value here */ ){ HashElem *elem; /* Used to loop thru the element list */ int count; /* Number of elements left to test */ + unsigned int h; /* The computed hash */ - if( pH->ht ){ - struct _ht *pEntry = &pH->ht[h]; + if( pH->ht ){ /*OPTIMIZATION-IF-TRUE*/ + struct _ht *pEntry; + h = strHash(pKey) % pH->htsize; + pEntry = &pH->ht[h]; elem = pEntry->chain; count = pEntry->count; }else{ + h = 0; elem = pH->first; count = pH->count; } - while( count-- && ALWAYS(elem) ){ - if( elem->nKey==nKey && sqlite3StrNICmp(elem->pKey,pKey,nKey)==0 ){ + *pHash = h; + while( count-- ){ + assert( elem!=0 ); + if( sqlite3StrICmp(elem->pKey,pKey)==0 ){ return elem; } elem = elem->next; @@ -23133,26 +29371,20 @@ static void removeElementGivenHash( } /* Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is +** that matches pKey. Return the data for this element if it is ** found, or NULL if there is no match. */ -SQLITE_PRIVATE void *sqlite3HashFind(const Hash *pH, const char *pKey, int nKey){ +SQLITE_PRIVATE void *sqlite3HashFind(const Hash *pH, const char *pKey){ HashElem *elem; /* The element that matches key */ unsigned int h; /* A hash on key */ assert( pH!=0 ); assert( pKey!=0 ); - assert( nKey>=0 ); - if( pH->ht ){ - h = strHash(pKey, nKey) % pH->htsize; - }else{ - h = 0; - } - elem = findElementGivenHash(pH, pKey, nKey, h); + elem = findElementWithHash(pH, pKey, &h); return elem ? elem->data : 0; } -/* Insert an element into the hash table pH. The key is pKey,nKey +/* Insert an element into the hash table pH. The key is pKey ** and the data is "data". ** ** If no element exists with a matching key, then a new @@ -23166,20 +29398,14 @@ SQLITE_PRIVATE void *sqlite3HashFind(const Hash *pH, const char *pKey, int nKey) ** If the "data" parameter to this function is NULL, then the ** element corresponding to "key" is removed from the hash table. */ -SQLITE_PRIVATE void *sqlite3HashInsert(Hash *pH, const char *pKey, int nKey, void *data){ +SQLITE_PRIVATE void *sqlite3HashInsert(Hash *pH, const char *pKey, void *data){ unsigned int h; /* the hash of the key modulo hash table size */ HashElem *elem; /* Used to loop thru the element list */ HashElem *new_elem; /* New element added to the pH */ assert( pH!=0 ); assert( pKey!=0 ); - assert( nKey>=0 ); - if( pH->htsize ){ - h = strHash(pKey, nKey) % pH->htsize; - }else{ - h = 0; - } - elem = findElementGivenHash(pH,pKey,nKey,h); + elem = findElementWithHash(pH,pKey,&h); if( elem ){ void *old_data = elem->data; if( data==0 ){ @@ -23187,7 +29413,6 @@ SQLITE_PRIVATE void *sqlite3HashInsert(Hash *pH, const char *pKey, int nKey, voi }else{ elem->data = data; elem->pKey = pKey; - assert(nKey==elem->nKey); } return old_data; } @@ -23195,187 +29420,194 @@ SQLITE_PRIVATE void *sqlite3HashInsert(Hash *pH, const char *pKey, int nKey, voi new_elem = (HashElem*)sqlite3Malloc( sizeof(HashElem) ); if( new_elem==0 ) return data; new_elem->pKey = pKey; - new_elem->nKey = nKey; new_elem->data = data; pH->count++; if( pH->count>=10 && pH->count > 2*pH->htsize ){ if( rehash(pH, pH->count*2) ){ assert( pH->htsize>0 ); - h = strHash(pKey, nKey) % pH->htsize; + h = strHash(pKey) % pH->htsize; } } - if( pH->ht ){ - insertElement(pH, &pH->ht[h], new_elem); - }else{ - insertElement(pH, 0, new_elem); - } + insertElement(pH, pH->ht ? &pH->ht[h] : 0, new_elem); return 0; } /************** End of hash.c ************************************************/ /************** Begin file opcodes.c *****************************************/ /* Automatically generated. Do not edit */ -/* See the mkopcodec.awk script for details. */ -#if !defined(SQLITE_OMIT_EXPLAIN) || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) +/* See the tool/mkopcodec.tcl script for details. */ +#if !defined(SQLITE_OMIT_EXPLAIN) \ + || defined(VDBE_PROFILE) \ + || defined(SQLITE_DEBUG) #if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) || defined(SQLITE_DEBUG) # define OpHelp(X) "\0" X #else # define OpHelp(X) #endif SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ - static const char *const azName[] = { "?", - /* 1 */ "Function" OpHelp("r[P3]=func(r[P2@P5])"), - /* 2 */ "Savepoint" OpHelp(""), - /* 3 */ "AutoCommit" OpHelp(""), - /* 4 */ "Transaction" OpHelp(""), - /* 5 */ "SorterNext" OpHelp(""), - /* 6 */ "PrevIfOpen" OpHelp(""), - /* 7 */ "NextIfOpen" OpHelp(""), - /* 8 */ "Prev" OpHelp(""), - /* 9 */ "Next" OpHelp(""), - /* 10 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"), - /* 11 */ "Checkpoint" OpHelp(""), - /* 12 */ "JournalMode" OpHelp(""), - /* 13 */ "Vacuum" OpHelp(""), - /* 14 */ "VFilter" OpHelp("iPlan=r[P3] zPlan='P4'"), - /* 15 */ "VUpdate" OpHelp("data=r[P3@P2]"), - /* 16 */ "Goto" OpHelp(""), - /* 17 */ "Gosub" OpHelp(""), - /* 18 */ "Return" OpHelp(""), - /* 19 */ "Not" OpHelp("r[P2]= !r[P1]"), - /* 20 */ "Yield" OpHelp(""), - /* 21 */ "HaltIfNull" OpHelp("if r[P3] null then halt"), - /* 22 */ "Halt" OpHelp(""), - /* 23 */ "Integer" OpHelp("r[P2]=P1"), - /* 24 */ "Int64" OpHelp("r[P2]=P4"), - /* 25 */ "String" OpHelp("r[P2]='P4' (len=P1)"), - /* 26 */ "Null" OpHelp("r[P2..P3]=NULL"), - /* 27 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"), - /* 28 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"), - /* 29 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"), - /* 30 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"), - /* 31 */ "SCopy" OpHelp("r[P2]=r[P1]"), - /* 32 */ "ResultRow" OpHelp("output=r[P1@P2]"), - /* 33 */ "CollSeq" OpHelp(""), - /* 34 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"), - /* 35 */ "MustBeInt" OpHelp(""), - /* 36 */ "RealAffinity" OpHelp(""), - /* 37 */ "Permutation" OpHelp(""), - /* 38 */ "Compare" OpHelp(""), - /* 39 */ "Jump" OpHelp(""), - /* 40 */ "Once" OpHelp(""), - /* 41 */ "If" OpHelp(""), - /* 42 */ "IfNot" OpHelp(""), - /* 43 */ "Column" OpHelp("r[P3]=PX"), - /* 44 */ "Affinity" OpHelp("affinity(r[P1@P2])"), - /* 45 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"), - /* 46 */ "Count" OpHelp("r[P2]=count()"), - /* 47 */ "ReadCookie" OpHelp(""), - /* 48 */ "SetCookie" OpHelp(""), - /* 49 */ "VerifyCookie" OpHelp(""), - /* 50 */ "OpenRead" OpHelp("root=P2 iDb=P3"), - /* 51 */ "OpenWrite" OpHelp("root=P2 iDb=P3"), - /* 52 */ "OpenAutoindex" OpHelp("nColumn=P2"), - /* 53 */ "OpenEphemeral" OpHelp("nColumn=P2"), - /* 54 */ "SorterOpen" OpHelp(""), - /* 55 */ "OpenPseudo" OpHelp("content in r[P2@P3]"), - /* 56 */ "Close" OpHelp(""), - /* 57 */ "SeekLt" OpHelp("key=r[P3@P4]"), - /* 58 */ "SeekLe" OpHelp("key=r[P3@P4]"), - /* 59 */ "SeekGe" OpHelp("key=r[P3@P4]"), - /* 60 */ "SeekGt" OpHelp("key=r[P3@P4]"), - /* 61 */ "Seek" OpHelp("intkey=r[P2]"), - /* 62 */ "NoConflict" OpHelp("key=r[P3@P4]"), - /* 63 */ "NotFound" OpHelp("key=r[P3@P4]"), - /* 64 */ "Found" OpHelp("key=r[P3@P4]"), - /* 65 */ "NotExists" OpHelp("intkey=r[P3]"), - /* 66 */ "Sequence" OpHelp("r[P2]=rowid"), - /* 67 */ "NewRowid" OpHelp("r[P2]=rowid"), - /* 68 */ "Insert" OpHelp("intkey=r[P3] data=r[P2]"), - /* 69 */ "InsertInt" OpHelp("intkey=P3 data=r[P2]"), - /* 70 */ "Delete" OpHelp(""), - /* 71 */ "Or" OpHelp("r[P3]=(r[P1] || r[P2])"), - /* 72 */ "And" OpHelp("r[P3]=(r[P1] && r[P2])"), - /* 73 */ "ResetCount" OpHelp(""), - /* 74 */ "SorterCompare" OpHelp("if key(P1)!=rtrim(r[P3],P4) goto P2"), - /* 75 */ "SorterData" OpHelp("r[P2]=data"), - /* 76 */ "IsNull" OpHelp("if r[P1]==NULL goto P2"), - /* 77 */ "NotNull" OpHelp("if r[P1]!=NULL goto P2"), - /* 78 */ "Ne" OpHelp("if r[P1]!=r[P3] goto P2"), - /* 79 */ "Eq" OpHelp("if r[P1]==r[P3] goto P2"), - /* 80 */ "Gt" OpHelp("if r[P1]>r[P3] goto P2"), - /* 81 */ "Le" OpHelp("if r[P1]<=r[P3] goto P2"), - /* 82 */ "Lt" OpHelp("if r[P1]=r[P3] goto P2"), - /* 84 */ "RowKey" OpHelp("r[P2]=key"), - /* 85 */ "BitAnd" OpHelp("r[P3]=r[P1]&r[P2]"), - /* 86 */ "BitOr" OpHelp("r[P3]=r[P1]|r[P2]"), - /* 87 */ "ShiftLeft" OpHelp("r[P3]=r[P2]<>r[P1]"), - /* 89 */ "Add" OpHelp("r[P3]=r[P1]+r[P2]"), - /* 90 */ "Subtract" OpHelp("r[P3]=r[P2]-r[P1]"), - /* 91 */ "Multiply" OpHelp("r[P3]=r[P1]*r[P2]"), - /* 92 */ "Divide" OpHelp("r[P3]=r[P2]/r[P1]"), - /* 93 */ "Remainder" OpHelp("r[P3]=r[P2]%r[P1]"), - /* 94 */ "Concat" OpHelp("r[P3]=r[P2]+r[P1]"), - /* 95 */ "RowData" OpHelp("r[P2]=data"), - /* 96 */ "BitNot" OpHelp("r[P1]= ~r[P1]"), - /* 97 */ "String8" OpHelp("r[P2]='P4'"), - /* 98 */ "Rowid" OpHelp("r[P2]=rowid"), - /* 99 */ "NullRow" OpHelp(""), - /* 100 */ "Last" OpHelp(""), - /* 101 */ "SorterSort" OpHelp(""), - /* 102 */ "Sort" OpHelp(""), - /* 103 */ "Rewind" OpHelp(""), - /* 104 */ "SorterInsert" OpHelp(""), - /* 105 */ "IdxInsert" OpHelp("key=r[P2]"), - /* 106 */ "IdxDelete" OpHelp("key=r[P2@P3]"), - /* 107 */ "IdxRowid" OpHelp("r[P2]=rowid"), - /* 108 */ "IdxLT" OpHelp("key=r[P3@P4]"), - /* 109 */ "IdxGE" OpHelp("key=r[P3@P4]"), - /* 110 */ "Destroy" OpHelp(""), - /* 111 */ "Clear" OpHelp(""), - /* 112 */ "CreateIndex" OpHelp("r[P2]=root iDb=P1"), - /* 113 */ "CreateTable" OpHelp("r[P2]=root iDb=P1"), - /* 114 */ "ParseSchema" OpHelp(""), - /* 115 */ "LoadAnalysis" OpHelp(""), - /* 116 */ "DropTable" OpHelp(""), - /* 117 */ "DropIndex" OpHelp(""), - /* 118 */ "DropTrigger" OpHelp(""), - /* 119 */ "IntegrityCk" OpHelp(""), - /* 120 */ "RowSetAdd" OpHelp("rowset(P1)=r[P2]"), - /* 121 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"), - /* 122 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"), - /* 123 */ "Program" OpHelp(""), - /* 124 */ "Param" OpHelp(""), - /* 125 */ "FkCounter" OpHelp("fkctr[P1]+=P2"), - /* 126 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"), - /* 127 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"), - /* 128 */ "IfPos" OpHelp("if r[P1]>0 goto P2"), - /* 129 */ "IfNeg" OpHelp("if r[P1]<0 goto P2"), - /* 130 */ "IfZero" OpHelp("r[P1]+=P3, if r[P1]==0 goto P2"), - /* 131 */ "AggFinal" OpHelp("accum=r[P1] N=P2"), - /* 132 */ "IncrVacuum" OpHelp(""), - /* 133 */ "Real" OpHelp("r[P2]=P4"), - /* 134 */ "Expire" OpHelp(""), - /* 135 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"), - /* 136 */ "VBegin" OpHelp(""), - /* 137 */ "VCreate" OpHelp(""), - /* 138 */ "VDestroy" OpHelp(""), - /* 139 */ "VOpen" OpHelp(""), - /* 140 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"), - /* 141 */ "VNext" OpHelp(""), - /* 142 */ "VRename" OpHelp(""), - /* 143 */ "ToText" OpHelp(""), - /* 144 */ "ToBlob" OpHelp(""), - /* 145 */ "ToNumeric" OpHelp(""), - /* 146 */ "ToInt" OpHelp(""), - /* 147 */ "ToReal" OpHelp(""), - /* 148 */ "Pagecount" OpHelp(""), - /* 149 */ "MaxPgcnt" OpHelp(""), - /* 150 */ "Trace" OpHelp(""), - /* 151 */ "Noop" OpHelp(""), - /* 152 */ "Explain" OpHelp(""), + static const char *const azName[] = { + /* 0 */ "Savepoint" OpHelp(""), + /* 1 */ "AutoCommit" OpHelp(""), + /* 2 */ "Transaction" OpHelp(""), + /* 3 */ "SorterNext" OpHelp(""), + /* 4 */ "PrevIfOpen" OpHelp(""), + /* 5 */ "NextIfOpen" OpHelp(""), + /* 6 */ "Prev" OpHelp(""), + /* 7 */ "Next" OpHelp(""), + /* 8 */ "Checkpoint" OpHelp(""), + /* 9 */ "JournalMode" OpHelp(""), + /* 10 */ "Vacuum" OpHelp(""), + /* 11 */ "VFilter" OpHelp("iplan=r[P3] zplan='P4'"), + /* 12 */ "VUpdate" OpHelp("data=r[P3@P2]"), + /* 13 */ "Goto" OpHelp(""), + /* 14 */ "Gosub" OpHelp(""), + /* 15 */ "InitCoroutine" OpHelp(""), + /* 16 */ "Yield" OpHelp(""), + /* 17 */ "MustBeInt" OpHelp(""), + /* 18 */ "Jump" OpHelp(""), + /* 19 */ "Not" OpHelp("r[P2]= !r[P1]"), + /* 20 */ "Once" OpHelp(""), + /* 21 */ "If" OpHelp(""), + /* 22 */ "IfNot" OpHelp(""), + /* 23 */ "SeekLT" OpHelp("key=r[P3@P4]"), + /* 24 */ "SeekLE" OpHelp("key=r[P3@P4]"), + /* 25 */ "SeekGE" OpHelp("key=r[P3@P4]"), + /* 26 */ "SeekGT" OpHelp("key=r[P3@P4]"), + /* 27 */ "Or" OpHelp("r[P3]=(r[P1] || r[P2])"), + /* 28 */ "And" OpHelp("r[P3]=(r[P1] && r[P2])"), + /* 29 */ "NoConflict" OpHelp("key=r[P3@P4]"), + /* 30 */ "NotFound" OpHelp("key=r[P3@P4]"), + /* 31 */ "Found" OpHelp("key=r[P3@P4]"), + /* 32 */ "SeekRowid" OpHelp("intkey=r[P3]"), + /* 33 */ "NotExists" OpHelp("intkey=r[P3]"), + /* 34 */ "IsNull" OpHelp("if r[P1]==NULL goto P2"), + /* 35 */ "NotNull" OpHelp("if r[P1]!=NULL goto P2"), + /* 36 */ "Ne" OpHelp("IF r[P3]!=r[P1]"), + /* 37 */ "Eq" OpHelp("IF r[P3]==r[P1]"), + /* 38 */ "Gt" OpHelp("IF r[P3]>r[P1]"), + /* 39 */ "Le" OpHelp("IF r[P3]<=r[P1]"), + /* 40 */ "Lt" OpHelp("IF r[P3]=r[P1]"), + /* 42 */ "ElseNotEq" OpHelp(""), + /* 43 */ "BitAnd" OpHelp("r[P3]=r[P1]&r[P2]"), + /* 44 */ "BitOr" OpHelp("r[P3]=r[P1]|r[P2]"), + /* 45 */ "ShiftLeft" OpHelp("r[P3]=r[P2]<>r[P1]"), + /* 47 */ "Add" OpHelp("r[P3]=r[P1]+r[P2]"), + /* 48 */ "Subtract" OpHelp("r[P3]=r[P2]-r[P1]"), + /* 49 */ "Multiply" OpHelp("r[P3]=r[P1]*r[P2]"), + /* 50 */ "Divide" OpHelp("r[P3]=r[P2]/r[P1]"), + /* 51 */ "Remainder" OpHelp("r[P3]=r[P2]%r[P1]"), + /* 52 */ "Concat" OpHelp("r[P3]=r[P2]+r[P1]"), + /* 53 */ "Last" OpHelp(""), + /* 54 */ "BitNot" OpHelp("r[P1]= ~r[P1]"), + /* 55 */ "SorterSort" OpHelp(""), + /* 56 */ "Sort" OpHelp(""), + /* 57 */ "Rewind" OpHelp(""), + /* 58 */ "IdxLE" OpHelp("key=r[P3@P4]"), + /* 59 */ "IdxGT" OpHelp("key=r[P3@P4]"), + /* 60 */ "IdxLT" OpHelp("key=r[P3@P4]"), + /* 61 */ "IdxGE" OpHelp("key=r[P3@P4]"), + /* 62 */ "RowSetRead" OpHelp("r[P3]=rowset(P1)"), + /* 63 */ "RowSetTest" OpHelp("if r[P3] in rowset(P1) goto P2"), + /* 64 */ "Program" OpHelp(""), + /* 65 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"), + /* 66 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"), + /* 67 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]--, goto P2"), + /* 68 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"), + /* 69 */ "IncrVacuum" OpHelp(""), + /* 70 */ "VNext" OpHelp(""), + /* 71 */ "Init" OpHelp("Start at P2"), + /* 72 */ "Return" OpHelp(""), + /* 73 */ "EndCoroutine" OpHelp(""), + /* 74 */ "HaltIfNull" OpHelp("if r[P3]=null halt"), + /* 75 */ "Halt" OpHelp(""), + /* 76 */ "Integer" OpHelp("r[P2]=P1"), + /* 77 */ "Int64" OpHelp("r[P2]=P4"), + /* 78 */ "String" OpHelp("r[P2]='P4' (len=P1)"), + /* 79 */ "Null" OpHelp("r[P2..P3]=NULL"), + /* 80 */ "SoftNull" OpHelp("r[P1]=NULL"), + /* 81 */ "Blob" OpHelp("r[P2]=P4 (len=P1)"), + /* 82 */ "Variable" OpHelp("r[P2]=parameter(P1,P4)"), + /* 83 */ "Move" OpHelp("r[P2@P3]=r[P1@P3]"), + /* 84 */ "Copy" OpHelp("r[P2@P3+1]=r[P1@P3+1]"), + /* 85 */ "SCopy" OpHelp("r[P2]=r[P1]"), + /* 86 */ "IntCopy" OpHelp("r[P2]=r[P1]"), + /* 87 */ "ResultRow" OpHelp("output=r[P1@P2]"), + /* 88 */ "CollSeq" OpHelp(""), + /* 89 */ "Function0" OpHelp("r[P3]=func(r[P2@P5])"), + /* 90 */ "Function" OpHelp("r[P3]=func(r[P2@P5])"), + /* 91 */ "AddImm" OpHelp("r[P1]=r[P1]+P2"), + /* 92 */ "RealAffinity" OpHelp(""), + /* 93 */ "Cast" OpHelp("affinity(r[P1])"), + /* 94 */ "Permutation" OpHelp(""), + /* 95 */ "Compare" OpHelp("r[P1@P3] <-> r[P2@P3]"), + /* 96 */ "Column" OpHelp("r[P3]=PX"), + /* 97 */ "String8" OpHelp("r[P2]='P4'"), + /* 98 */ "Affinity" OpHelp("affinity(r[P1@P2])"), + /* 99 */ "MakeRecord" OpHelp("r[P3]=mkrec(r[P1@P2])"), + /* 100 */ "Count" OpHelp("r[P2]=count()"), + /* 101 */ "ReadCookie" OpHelp(""), + /* 102 */ "SetCookie" OpHelp(""), + /* 103 */ "ReopenIdx" OpHelp("root=P2 iDb=P3"), + /* 104 */ "OpenRead" OpHelp("root=P2 iDb=P3"), + /* 105 */ "OpenWrite" OpHelp("root=P2 iDb=P3"), + /* 106 */ "OpenAutoindex" OpHelp("nColumn=P2"), + /* 107 */ "OpenEphemeral" OpHelp("nColumn=P2"), + /* 108 */ "SorterOpen" OpHelp(""), + /* 109 */ "SequenceTest" OpHelp("if( cursor[P1].ctr++ ) pc = P2"), + /* 110 */ "OpenPseudo" OpHelp("P3 columns in r[P2]"), + /* 111 */ "Close" OpHelp(""), + /* 112 */ "ColumnsUsed" OpHelp(""), + /* 113 */ "Sequence" OpHelp("r[P2]=cursor[P1].ctr++"), + /* 114 */ "NewRowid" OpHelp("r[P2]=rowid"), + /* 115 */ "Insert" OpHelp("intkey=r[P3] data=r[P2]"), + /* 116 */ "InsertInt" OpHelp("intkey=P3 data=r[P2]"), + /* 117 */ "Delete" OpHelp(""), + /* 118 */ "ResetCount" OpHelp(""), + /* 119 */ "SorterCompare" OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"), + /* 120 */ "SorterData" OpHelp("r[P2]=data"), + /* 121 */ "RowData" OpHelp("r[P2]=data"), + /* 122 */ "Rowid" OpHelp("r[P2]=rowid"), + /* 123 */ "NullRow" OpHelp(""), + /* 124 */ "SorterInsert" OpHelp("key=r[P2]"), + /* 125 */ "IdxInsert" OpHelp("key=r[P2]"), + /* 126 */ "IdxDelete" OpHelp("key=r[P2@P3]"), + /* 127 */ "Seek" OpHelp("Move P3 to P1.rowid"), + /* 128 */ "IdxRowid" OpHelp("r[P2]=rowid"), + /* 129 */ "Destroy" OpHelp(""), + /* 130 */ "Clear" OpHelp(""), + /* 131 */ "ResetSorter" OpHelp(""), + /* 132 */ "Real" OpHelp("r[P2]=P4"), + /* 133 */ "CreateIndex" OpHelp("r[P2]=root iDb=P1"), + /* 134 */ "CreateTable" OpHelp("r[P2]=root iDb=P1"), + /* 135 */ "ParseSchema" OpHelp(""), + /* 136 */ "LoadAnalysis" OpHelp(""), + /* 137 */ "DropTable" OpHelp(""), + /* 138 */ "DropIndex" OpHelp(""), + /* 139 */ "DropTrigger" OpHelp(""), + /* 140 */ "IntegrityCk" OpHelp(""), + /* 141 */ "RowSetAdd" OpHelp("rowset(P1)=r[P2]"), + /* 142 */ "Param" OpHelp(""), + /* 143 */ "FkCounter" OpHelp("fkctr[P1]+=P2"), + /* 144 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"), + /* 145 */ "OffsetLimit" OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"), + /* 146 */ "AggStep0" OpHelp("accum=r[P3] step(r[P2@P5])"), + /* 147 */ "AggStep" OpHelp("accum=r[P3] step(r[P2@P5])"), + /* 148 */ "AggFinal" OpHelp("accum=r[P1] N=P2"), + /* 149 */ "Expire" OpHelp(""), + /* 150 */ "TableLock" OpHelp("iDb=P1 root=P2 write=P3"), + /* 151 */ "VBegin" OpHelp(""), + /* 152 */ "VCreate" OpHelp(""), + /* 153 */ "VDestroy" OpHelp(""), + /* 154 */ "VOpen" OpHelp(""), + /* 155 */ "VColumn" OpHelp("r[P3]=vcolumn(P2)"), + /* 156 */ "VRename" OpHelp(""), + /* 157 */ "Pagecount" OpHelp(""), + /* 158 */ "MaxPgcnt" OpHelp(""), + /* 159 */ "CursorHint" OpHelp(""), + /* 160 */ "Noop" OpHelp(""), + /* 161 */ "Explain" OpHelp(""), }; return azName[i]; } @@ -23428,6 +29660,7 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ ** * Definitions of sqlite3_vfs objects for all locking methods ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). */ +/* #include "sqliteInt.h" */ #if SQLITE_OS_UNIX /* This file is used on unix only */ /* @@ -23455,42 +29688,17 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ # endif #endif -/* -** Define the OS_VXWORKS pre-processor macro to 1 if building on -** vxworks, or 0 otherwise. -*/ -#ifndef OS_VXWORKS -# if defined(__RTP__) || defined(_WRS_KERNEL) -# define OS_VXWORKS 1 -# else -# define OS_VXWORKS 0 -# endif +/* Use pread() and pwrite() if they are available */ +#if defined(__APPLE__) +# define HAVE_PREAD 1 +# define HAVE_PWRITE 1 #endif - -/* -** These #defines should enable >2GB file support on Posix if the -** underlying operating system supports it. If the OS lacks -** large file support, these should be no-ops. -** -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch -** on the compiler command line. This is necessary if you are compiling -** on a recent machine (ex: RedHat 7.2) but you want your code to work -** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2 -** without this option, LFS is enable. But LFS does not exist in the kernel -** in RedHat 6.0, so the code won't work. Hence, for maximum binary -** portability you should omit LFS. -** -** The previous paragraph was written in 2005. (This paragraph is written -** on 2008-11-28.) These days, all Linux kernels support large files, so -** you should probably leave LFS enabled. But some embedded platforms might -** lack LFS in which case the SQLITE_DISABLE_LFS macro might still be useful. -*/ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 +#if defined(HAVE_PREAD64) && defined(HAVE_PWRITE64) +# undef USE_PREAD +# define USE_PREAD64 1 +#elif defined(HAVE_PREAD) && defined(HAVE_PWRITE) +# undef USE_PREAD64 +# define USE_PREAD 1 #endif /* @@ -23504,22 +29712,33 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ #include #include #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 -#include +# include #endif - #if SQLITE_ENABLE_LOCKING_STYLE # include -# if OS_VXWORKS -# include -# include -# else -# include -# include -# endif +# include +# include #endif /* SQLITE_ENABLE_LOCKING_STYLE */ -#if defined(__APPLE__) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS) +#if defined(__APPLE__) && ((__MAC_OS_X_VERSION_MIN_REQUIRED > 1050) || \ + (__IPHONE_OS_VERSION_MIN_REQUIRED > 2000)) +# if (!defined(TARGET_OS_EMBEDDED) || (TARGET_OS_EMBEDDED==0)) \ + && (!defined(TARGET_IPHONE_SIMULATOR) || (TARGET_IPHONE_SIMULATOR==0)) +# define HAVE_GETHOSTUUID 1 +# else +# warning "gethostuuid() is disabled." +# endif +#endif + + +#if OS_VXWORKS +/* # include */ +# include +# include +#endif /* OS_VXWORKS */ + +#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE # include #endif @@ -23560,6 +29779,15 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){ */ #define MAX_PATHNAME 512 +/* +** Maximum supported symbolic links +*/ +#define SQLITE_MAX_SYMLINKS 100 + +/* Always cast the getpid() return type for compatibility with +** kernel modules in VxWorks. */ +#define osGetpid(X) (pid_t)getpid() + /* ** Only set the lastErrno if the error code is a real error and not ** a normal expected return code of SQLITE_BUSY or SQLITE_OK @@ -23648,7 +29876,7 @@ struct unixFile { ** method was called. If xOpen() is called from a different process id, ** indicating that a fork() has occurred, the PRNG will be reset. */ -static int randomnessPid = 0; +static pid_t randomnessPid = 0; /* ** Allowed values for the unixFile.ctrlFlags bitmask: @@ -23665,7 +29893,6 @@ static int randomnessPid = 0; #define UNIXFILE_DELETE 0x20 /* Delete on close */ #define UNIXFILE_URI 0x40 /* Filename might have query parameters */ #define UNIXFILE_NOLOCK 0x80 /* Do no file locking */ -#define UNIXFILE_WARNED 0x0100 /* verifyDbFile() warnings have been issued */ /* ** Include code that is common to all os_*.c files @@ -23703,24 +29930,14 @@ static int randomnessPid = 0; # error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." #endif -#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) -# ifndef SQLITE_DEBUG_OS_TRACE -# define SQLITE_DEBUG_OS_TRACE 0 -# endif - int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE; -# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X -#else -# define OSTRACE(X) -#endif - /* ** Macros for performance tracing. Normally turned off. Only works ** on i486 hardware. */ #ifdef SQLITE_PERFORMANCE_TRACE -/* -** hwtime.h contains inline assembler code for implementing +/* +** hwtime.h contains inline assembler code for implementing ** high-performance timing routines. */ /************** Include hwtime.h in the middle of os_common.h ****************/ @@ -23740,8 +29957,8 @@ static int randomnessPid = 0; ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. */ -#ifndef _HWTIME_H_ -#define _HWTIME_H_ +#ifndef SQLITE_HWTIME_H +#define SQLITE_HWTIME_H /* ** The following routine only works on pentium-class (or newer) processors. @@ -23809,7 +30026,7 @@ SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } #endif -#endif /* !defined(_HWTIME_H_) */ +#endif /* !defined(SQLITE_HWTIME_H) */ /************** End of hwtime.h **********************************************/ /************** Continuing where we left off in os_common.h ******************/ @@ -23830,14 +30047,14 @@ static sqlite_uint64 g_elapsed; ** of code will give us the ability to simulate a disk I/O error. This ** is used for testing the I/O recovery logic. */ -#ifdef SQLITE_TEST -SQLITE_API int sqlite3_io_error_hit = 0; /* Total number of I/O Errors */ -SQLITE_API int sqlite3_io_error_hardhit = 0; /* Number of non-benign errors */ -SQLITE_API int sqlite3_io_error_pending = 0; /* Count down to first I/O error */ -SQLITE_API int sqlite3_io_error_persist = 0; /* True if I/O errors persist */ -SQLITE_API int sqlite3_io_error_benign = 0; /* True if errors are benign */ -SQLITE_API int sqlite3_diskfull_pending = 0; -SQLITE_API int sqlite3_diskfull = 0; +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_io_error_hit; +SQLITE_API extern int sqlite3_io_error_hardhit; +SQLITE_API extern int sqlite3_io_error_pending; +SQLITE_API extern int sqlite3_io_error_persist; +SQLITE_API extern int sqlite3_io_error_benign; +SQLITE_API extern int sqlite3_diskfull_pending; +SQLITE_API extern int sqlite3_diskfull; #define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) #define SimulateIOError(CODE) \ if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ @@ -23863,17 +30080,17 @@ static void local_ioerr(){ #define SimulateIOErrorBenign(X) #define SimulateIOError(A) #define SimulateDiskfullError(A) -#endif +#endif /* defined(SQLITE_TEST) */ /* ** When testing, keep a count of the number of open files. */ -#ifdef SQLITE_TEST -SQLITE_API int sqlite3_open_file_count = 0; +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_open_file_count; #define OpenCounter(X) sqlite3_open_file_count+=(X) #else #define OpenCounter(X) -#endif +#endif /* defined(SQLITE_TEST) */ #endif /* !defined(_OS_COMMON_H_) */ @@ -23918,6 +30135,14 @@ SQLITE_API int sqlite3_open_file_count = 0; # endif #endif +/* +** Explicitly call the 64-bit version of lseek() on Android. Otherwise, lseek() +** is the 32-bit version, even if _FILE_OFFSET_BITS=64 is defined. +*/ +#ifdef __ANDROID__ +# define lseek lseek64 +#endif + /* ** Different Unix systems declare open() in different ways. Same use ** open(const char*,int,mode_t). Others use open(const char*,int,...). @@ -23930,17 +30155,9 @@ static int posixOpen(const char *zFile, int flags, int mode){ return open(zFile, flags, mode); } -/* -** On some systems, calls to fchown() will trigger a message in a security -** log if they come from non-root processes. So avoid calling fchown() if -** we are not running as root. -*/ -static int posixFchown(int fd, uid_t uid, gid_t gid){ - return geteuid() ? 0 : fchown(fd,uid,gid); -} - /* Forward reference */ static int openDirectory(const char*, int*); +static int unixGetpagesize(void); /* ** Many system calls are accessed through pointer-to-functions so that @@ -24003,7 +30220,7 @@ static struct unix_syscall { #else { "pread64", (sqlite3_syscall_ptr)0, 0 }, #endif -#define osPread64 ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent) +#define osPread64 ((ssize_t(*)(int,void*,size_t,off64_t))aSyscall[10].pCurrent) { "write", (sqlite3_syscall_ptr)write, 0 }, #define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent) @@ -24021,10 +30238,10 @@ static struct unix_syscall { #else { "pwrite64", (sqlite3_syscall_ptr)0, 0 }, #endif -#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off_t))\ +#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off64_t))\ aSyscall[13].pCurrent) - { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 }, + { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 }, #define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent) #if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE @@ -24046,26 +30263,74 @@ static struct unix_syscall { { "rmdir", (sqlite3_syscall_ptr)rmdir, 0 }, #define osRmdir ((int(*)(const char*))aSyscall[19].pCurrent) - { "fchown", (sqlite3_syscall_ptr)posixFchown, 0 }, +#if defined(HAVE_FCHOWN) + { "fchown", (sqlite3_syscall_ptr)fchown, 0 }, +#else + { "fchown", (sqlite3_syscall_ptr)0, 0 }, +#endif #define osFchown ((int(*)(int,uid_t,gid_t))aSyscall[20].pCurrent) + { "geteuid", (sqlite3_syscall_ptr)geteuid, 0 }, +#define osGeteuid ((uid_t(*)(void))aSyscall[21].pCurrent) + #if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 - { "mmap", (sqlite3_syscall_ptr)mmap, 0 }, -#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[21].pCurrent) + { "mmap", (sqlite3_syscall_ptr)mmap, 0 }, +#else + { "mmap", (sqlite3_syscall_ptr)0, 0 }, +#endif +#define osMmap ((void*(*)(void*,size_t,int,int,int,off_t))aSyscall[22].pCurrent) +#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 { "munmap", (sqlite3_syscall_ptr)munmap, 0 }, -#define osMunmap ((void*(*)(void*,size_t))aSyscall[22].pCurrent) +#else + { "munmap", (sqlite3_syscall_ptr)0, 0 }, +#endif +#define osMunmap ((void*(*)(void*,size_t))aSyscall[23].pCurrent) -#if HAVE_MREMAP +#if HAVE_MREMAP && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) { "mremap", (sqlite3_syscall_ptr)mremap, 0 }, #else { "mremap", (sqlite3_syscall_ptr)0, 0 }, #endif -#define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[23].pCurrent) +#define osMremap ((void*(*)(void*,size_t,size_t,int,...))aSyscall[24].pCurrent) + +#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 + { "getpagesize", (sqlite3_syscall_ptr)unixGetpagesize, 0 }, +#else + { "getpagesize", (sqlite3_syscall_ptr)0, 0 }, #endif +#define osGetpagesize ((int(*)(void))aSyscall[25].pCurrent) + +#if defined(HAVE_READLINK) + { "readlink", (sqlite3_syscall_ptr)readlink, 0 }, +#else + { "readlink", (sqlite3_syscall_ptr)0, 0 }, +#endif +#define osReadlink ((ssize_t(*)(const char*,char*,size_t))aSyscall[26].pCurrent) + +#if defined(HAVE_LSTAT) + { "lstat", (sqlite3_syscall_ptr)lstat, 0 }, +#else + { "lstat", (sqlite3_syscall_ptr)0, 0 }, +#endif +#define osLstat ((int(*)(const char*,struct stat*))aSyscall[27].pCurrent) }; /* End of the overrideable system calls */ + +/* +** On some systems, calls to fchown() will trigger a message in a security +** log if they come from non-root processes. So avoid calling fchown() if +** we are not running as root. +*/ +static int robustFchown(int fd, uid_t uid, gid_t gid){ +#if defined(HAVE_FCHOWN) + return osGeteuid() ? 0 : osFchown(fd,uid,gid); +#else + return 0; +#endif +} + /* ** This is the xSetSystemCall() method of sqlite3_vfs for all of the ** "unix" VFSes. Return SQLITE_OK opon successfully updating the @@ -24227,22 +30492,22 @@ static int robust_open(const char *z, int f, mode_t m){ ** unixEnterLeave() */ static void unixEnterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } static void unixLeaveMutex(void){ - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } #ifdef SQLITE_DEBUG static int unixMutexHeld(void) { - return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } #endif -#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) +#ifdef SQLITE_HAVE_OS_TRACE /* ** Helper function for printing out trace information from debugging -** binaries. This returns the string represetation of the supplied +** binaries. This returns the string representation of the supplied ** integer lock-type. */ static const char *azFileLock(int eFileLock){ @@ -24319,9 +30584,22 @@ static int lockTrace(int fd, int op, struct flock *p){ /* ** Retry ftruncate() calls that fail due to EINTR +** +** All calls to ftruncate() within this file should be made through +** this wrapper. On the Android platform, bypassing the logic below +** could lead to a corrupt database. */ static int robust_ftruncate(int h, sqlite3_int64 sz){ int rc; +#ifdef __ANDROID__ + /* On Android, ftruncate() always uses 32-bit offsets, even if + ** _FILE_OFFSET_BITS=64 is defined. This means it is unsafe to attempt to + ** truncate a file to any size larger than 2GiB. Silently ignore any + ** such attempts. */ + if( sz>(sqlite3_int64)0x7FFFFFFF ){ + rc = SQLITE_OK; + }else +#endif do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR ); return rc; } @@ -24337,23 +30615,12 @@ static int robust_ftruncate(int h, sqlite3_int64 sz){ ** should handle ENOLCK, ENOTSUP, EOPNOTSUPP separately. */ static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { + assert( (sqliteIOErr == SQLITE_IOERR_LOCK) || + (sqliteIOErr == SQLITE_IOERR_UNLOCK) || + (sqliteIOErr == SQLITE_IOERR_RDLOCK) || + (sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) ); switch (posixError) { -#if 0 - /* At one point this code was not commented out. In theory, this branch - ** should never be hit, as this function should only be called after - ** a locking-related function (i.e. fcntl()) has returned non-zero with - ** the value of errno as the first argument. Since a system call has failed, - ** errno should be non-zero. - ** - ** Despite this, if errno really is zero, we still don't want to return - ** SQLITE_OK. The system call failed, and *some* SQLite error should be - ** propagated back to the caller. Commenting this branch out means errno==0 - ** will be handled by the "default:" case below. - */ - case 0: - return SQLITE_OK; -#endif - + case EACCES: case EAGAIN: case ETIMEDOUT: case EBUSY: @@ -24363,51 +30630,9 @@ static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { * introspection, in which it actually means what it says */ return SQLITE_BUSY; - case EACCES: - /* EACCES is like EAGAIN during locking operations, but not any other time*/ - if( (sqliteIOErr == SQLITE_IOERR_LOCK) || - (sqliteIOErr == SQLITE_IOERR_UNLOCK) || - (sqliteIOErr == SQLITE_IOERR_RDLOCK) || - (sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) ){ - return SQLITE_BUSY; - } - /* else fall through */ case EPERM: return SQLITE_PERM; - /* EDEADLK is only possible if a call to fcntl(F_SETLKW) is made. And - ** this module never makes such a call. And the code in SQLite itself - ** asserts that SQLITE_IOERR_BLOCKED is never returned. For these reasons - ** this case is also commented out. If the system does set errno to EDEADLK, - ** the default SQLITE_IOERR_XXX code will be returned. */ -#if 0 - case EDEADLK: - return SQLITE_IOERR_BLOCKED; -#endif - -#if EOPNOTSUPP!=ENOTSUP - case EOPNOTSUPP: - /* something went terribly awry, unless during file system support - * introspection, in which it actually means what it says */ -#endif -#ifdef ENOTSUP - case ENOTSUP: - /* invalid fd, unless during file system support introspection, in which - * it actually means what it says */ -#endif - case EIO: - case EBADF: - case EINVAL: - case ENOTCONN: - case ENODEV: - case ENXIO: - case ENOENT: -#ifdef ESTALE /* ESTALE is not defined on Interix systems */ - case ESTALE: -#endif - case ENOSYS: - /* these should force the client to close the file and reconnect */ - default: return sqliteIOErr; } @@ -24499,7 +30724,7 @@ static struct vxworksFileId *vxworksFindFileId(const char *zAbsoluteName){ assert( zAbsoluteName[0]=='/' ); n = (int)strlen(zAbsoluteName); - pNew = sqlite3_malloc( sizeof(*pNew) + (n+1) ); + pNew = sqlite3_malloc64( sizeof(*pNew) + (n+1) ); if( pNew==0 ) return 0; pNew->zCanonicalName = (char*)&pNew[1]; memcpy(pNew->zCanonicalName, zAbsoluteName, n+1); @@ -24651,7 +30876,14 @@ struct unixFileId { #if OS_VXWORKS struct vxworksFileId *pId; /* Unique file ID for vxworks. */ #else - ino_t ino; /* Inode number */ + /* We are told that some versions of Android contain a bug that + ** sizes ino_t at only 32-bits instead of 64-bits. (See + ** https://android-review.googlesource.com/#/c/115351/3/dist/sqlite3.c) + ** To work around this, always allocate 64-bits for the inode number. + ** On small machines that only have 32-bit inodes, this wastes 4 bytes, + ** but that should not be a big deal. */ + /* WAS: ino_t ino; */ + u64 ino; /* Inode number */ #endif }; @@ -24691,7 +30923,7 @@ static unixInodeInfo *inodeList = 0; /* ** -** This function - unixLogError_x(), is only ever called via the macro +** This function - unixLogErrorAtLine(), is only ever called via the macro ** unixLogError(). ** ** It is invoked after an error occurs in an OS function and errno has been @@ -24778,6 +31010,14 @@ static void robust_close(unixFile *pFile, int h, int lineno){ } } +/* +** Set the pFile->lastErrno. Do this in a subroutine as that provides +** a convenient place to set a breakpoint. +*/ +static void storeLastErrno(unixFile *pFile, int error){ + pFile->lastErrno = error; +} + /* ** Close all file descriptors accumuated in the unixInodeInfo->pUnused list. */ @@ -24851,8 +31091,8 @@ static int findInodeInfo( fd = pFile->h; rc = osFstat(fd, &statbuf); if( rc!=0 ){ - pFile->lastErrno = errno; -#ifdef EOVERFLOW + storeLastErrno(pFile, errno); +#if defined(EOVERFLOW) && defined(SQLITE_DISABLE_LFS) if( pFile->lastErrno==EOVERFLOW ) return SQLITE_NOLFS; #endif return SQLITE_IOERR; @@ -24872,12 +31112,12 @@ static int findInodeInfo( if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){ do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR ); if( rc!=1 ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return SQLITE_IOERR; } rc = osFstat(fd, &statbuf); if( rc!=0 ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return SQLITE_IOERR; } } @@ -24888,16 +31128,16 @@ static int findInodeInfo( #if OS_VXWORKS fileId.pId = pFile->pId; #else - fileId.ino = statbuf.st_ino; + fileId.ino = (u64)statbuf.st_ino; #endif pInode = inodeList; while( pInode && memcmp(&fileId, &pInode->fileId, sizeof(fileId)) ){ pInode = pInode->pNext; } if( pInode==0 ){ - pInode = sqlite3_malloc( sizeof(*pInode) ); + pInode = sqlite3_malloc64( sizeof(*pInode) ); if( pInode==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memset(pInode, 0, sizeof(*pInode)); memcpy(&pInode->fileId, &fileId, sizeof(fileId)); @@ -24917,9 +31157,14 @@ static int findInodeInfo( ** Return TRUE if pFile has been renamed or unlinked since it was first opened. */ static int fileHasMoved(unixFile *pFile){ +#if OS_VXWORKS + return pFile->pInode!=0 && pFile->pId!=pFile->pInode->fileId.pId; +#else struct stat buf; return pFile->pInode!=0 && - (osStat(pFile->zPath, &buf)!=0 || buf.st_ino!=pFile->pInode->fileId.ino); + (osStat(pFile->zPath, &buf)!=0 + || (u64)buf.st_ino!=pFile->pInode->fileId.ino); +#endif } @@ -24935,30 +31180,25 @@ static int fileHasMoved(unixFile *pFile){ static void verifyDbFile(unixFile *pFile){ struct stat buf; int rc; - if( pFile->ctrlFlags & UNIXFILE_WARNED ){ - /* One or more of the following warnings have already been issued. Do not - ** repeat them so as not to clutter the error log */ - return; - } + + /* These verifications occurs for the main database only */ + if( pFile->ctrlFlags & UNIXFILE_NOLOCK ) return; + rc = osFstat(pFile->h, &buf); if( rc!=0 ){ sqlite3_log(SQLITE_WARNING, "cannot fstat db file %s", pFile->zPath); - pFile->ctrlFlags |= UNIXFILE_WARNED; return; } - if( buf.st_nlink==0 && (pFile->ctrlFlags & UNIXFILE_DELETE)==0 ){ + if( buf.st_nlink==0 ){ sqlite3_log(SQLITE_WARNING, "file unlinked while open: %s", pFile->zPath); - pFile->ctrlFlags |= UNIXFILE_WARNED; return; } if( buf.st_nlink>1 ){ sqlite3_log(SQLITE_WARNING, "multiple links to file: %s", pFile->zPath); - pFile->ctrlFlags |= UNIXFILE_WARNED; return; } if( fileHasMoved(pFile) ){ sqlite3_log(SQLITE_WARNING, "file renamed while open: %s", pFile->zPath); - pFile->ctrlFlags |= UNIXFILE_WARNED; return; } } @@ -24978,6 +31218,7 @@ static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); assert( pFile ); + assert( pFile->eFileLock<=SHARED_LOCK ); unixEnterMutex(); /* Because pFile->pInode is shared across threads */ /* Check if a thread in this process holds such a lock */ @@ -24996,7 +31237,7 @@ static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ lock.l_type = F_WRLCK; if( osFcntl(pFile->h, F_GETLK, &lock) ){ rc = SQLITE_IOERR_CHECKRESERVEDLOCK; - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); } else if( lock.l_type!=F_UNLCK ){ reserved = 1; } @@ -25034,9 +31275,7 @@ static int unixFileLock(unixFile *pFile, struct flock *pLock){ unixInodeInfo *pInode = pFile->pInode; assert( unixMutexHeld() ); assert( pInode!=0 ); - if( ((pFile->ctrlFlags & UNIXFILE_EXCL)!=0 || pInode->bProcessLock) - && ((pFile->ctrlFlags & UNIXFILE_RDONLY)==0) - ){ + if( (pFile->ctrlFlags & (UNIXFILE_EXCL|UNIXFILE_RDONLY))==UNIXFILE_EXCL ){ if( pInode->bProcessLock==0 ){ struct flock lock; assert( pInode->nLock==0 ); @@ -25086,7 +31325,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** lock transitions in terms of the POSIX advisory shared and exclusive ** lock primitives (called read-locks and write-locks below, to avoid ** confusion with SQLite lock names). The algorithms are complicated - ** slightly in order to be compatible with windows systems simultaneously + ** slightly in order to be compatible with Windows95 systems simultaneously ** accessing the same database file, in case that is ever required. ** ** Symbols defined in os.h indentify the 'pending byte' and the 'reserved @@ -25094,8 +31333,14 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** range', a range of 510 bytes at a well known offset. ** ** To obtain a SHARED lock, a read-lock is obtained on the 'pending - ** byte'. If this is successful, a random byte from the 'shared byte - ** range' is read-locked and the lock on the 'pending byte' released. + ** byte'. If this is successful, 'shared byte range' is read-locked + ** and the lock on the 'pending byte' released. (Legacy note: When + ** SQLite was first developed, Windows95 systems were still very common, + ** and Widnows95 lacks a shared-lock capability. So on Windows95, a + ** single randomly selected by from the 'shared byte range' is locked. + ** Windows95 is now pretty much extinct, but this work-around for the + ** lack of shared-locks on Windows95 lives on, for backwards + ** compatibility.) ** ** A process may only obtain a RESERVED lock after it has a SHARED lock. ** A RESERVED lock is implemented by grabbing a write-lock on the @@ -25114,11 +31359,6 @@ static int unixLock(sqlite3_file *id, int eFileLock){ ** range'. Since all other locks require a read-lock on one of the bytes ** within this range, this ensures that no other locks are held on the ** database. - ** - ** The reason a single byte cannot be used instead of the 'shared byte - ** range' is that some versions of windows do not support read-locks. By - ** locking a random byte from a range, concurrent SHARED locks may exist - ** even if the locking primitive used is always a write-lock. */ int rc = SQLITE_OK; unixFile *pFile = (unixFile*)id; @@ -25129,7 +31369,8 @@ static int unixLock(sqlite3_file *id, int eFileLock){ assert( pFile ); OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), - azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid())); + azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared, + osGetpid(0))); /* If there is already a lock of this type or more restrictive on the ** unixFile, do nothing. Don't use the end_lock: exit path, as @@ -25196,7 +31437,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ tErrno = errno; rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); if( rc!=SQLITE_BUSY ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } goto end_lock; } @@ -25231,7 +31472,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ if( rc ){ if( rc!=SQLITE_BUSY ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } goto end_lock; }else{ @@ -25264,7 +31505,7 @@ static int unixLock(sqlite3_file *id, int eFileLock){ tErrno = errno; rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); if( rc!=SQLITE_BUSY ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } } } @@ -25337,7 +31578,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ assert( pFile ); OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock, pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, - getpid())); + osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); if( pFile->eFileLock<=eFileLock ){ @@ -25371,7 +31612,6 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ ** 4: [RRRR.] */ if( eFileLock==SHARED_LOCK ){ - #if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE (void)handleNFSUnlock; assert( handleNFSUnlock==0 ); @@ -25388,9 +31628,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ if( unixFileLock(pFile, &lock)==(-1) ){ tErrno = errno; rc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } + storeLastErrno(pFile, tErrno); goto end_unlock; } lock.l_type = F_RDLCK; @@ -25401,7 +31639,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ tErrno = errno; rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK); if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } goto end_unlock; } @@ -25412,9 +31650,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ if( unixFileLock(pFile, &lock)==(-1) ){ tErrno = errno; rc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } + storeLastErrno(pFile, tErrno); goto end_unlock; } }else @@ -25432,7 +31668,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ ** SQLITE_BUSY would confuse the upper layer (in practice it causes ** an assert to fail). */ rc = SQLITE_IOERR_RDLOCK; - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); goto end_unlock; } } @@ -25445,7 +31681,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ pInode->eFileLock = SHARED_LOCK; }else{ rc = SQLITE_IOERR_UNLOCK; - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); goto end_unlock; } } @@ -25463,7 +31699,7 @@ static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ pInode->eFileLock = NO_LOCK; }else{ rc = SQLITE_IOERR_UNLOCK; - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); pInode->eFileLock = NO_LOCK; pFile->eFileLock = NO_LOCK; } @@ -25532,6 +31768,13 @@ static int closeUnixFile(sqlite3_file *id){ vxworksReleaseFileId(pFile->pId); pFile->pId = 0; } +#endif +#ifdef SQLITE_UNLINK_AFTER_CLOSE + if( pFile->ctrlFlags & UNIXFILE_DELETE ){ + osUnlink(pFile->zPath); + sqlite3_free(*(char**)&pFile->zPath); + pFile->zPath = 0; + } #endif OSTRACE(("CLOSE %-3d\n", pFile->h)); OpenCounter(-1); @@ -25658,17 +31901,7 @@ static int dotlockCheckReservedLock(sqlite3_file *id, int *pResOut) { SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); assert( pFile ); - - /* Check if a thread in this process holds such a lock */ - if( pFile->eFileLock>SHARED_LOCK ){ - /* Either this connection or some other connection in the same process - ** holds a lock on the file. No need to check further. */ - reserved = 1; - }else{ - /* The lock is held if and only if the lockfile exists */ - const char *zLockFile = (const char*)pFile->lockingContext; - reserved = osAccess(zLockFile, 0)==0; - } + reserved = osAccess((const char*)pFile->lockingContext, 0)==0; OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved)); *pResOut = reserved; return rc; @@ -25730,8 +31963,8 @@ static int dotlockLock(sqlite3_file *id, int eFileLock) { rc = SQLITE_BUSY; } else { rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + if( rc!=SQLITE_BUSY ){ + storeLastErrno(pFile, tErrno); } } return rc; @@ -25758,7 +31991,7 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { assert( pFile ); OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); + pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); /* no-op if possible */ @@ -25777,15 +32010,13 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { /* To fully unlock the database, delete the lock file */ assert( eFileLock==NO_LOCK ); rc = osRmdir(zLockFile); - if( rc<0 && errno==ENOTDIR ) rc = osUnlink(zLockFile); if( rc<0 ){ int tErrno = errno; - rc = 0; - if( ENOENT != tErrno ){ + if( tErrno==ENOENT ){ + rc = SQLITE_OK; + }else{ rc = SQLITE_IOERR_UNLOCK; - } - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } return rc; } @@ -25797,14 +32028,11 @@ static int dotlockUnlock(sqlite3_file *id, int eFileLock) { ** Close a file. Make sure the lock has been released before closing. */ static int dotlockClose(sqlite3_file *id) { - int rc = SQLITE_OK; - if( id ){ - unixFile *pFile = (unixFile*)id; - dotlockUnlock(id, NO_LOCK); - sqlite3_free(pFile->lockingContext); - rc = closeUnixFile(id); - } - return rc; + unixFile *pFile = (unixFile*)id; + assert( id!=0 ); + dotlockUnlock(id, NO_LOCK); + sqlite3_free(pFile->lockingContext); + return closeUnixFile(id); } /****************** End of the dot-file lock implementation ******************* ******************************************************************************/ @@ -25821,10 +32049,9 @@ static int dotlockClose(sqlite3_file *id) { ** still works when you do this, but concurrency is reduced since ** only a single process can be reading the database at a time. ** -** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off or if -** compiling for VXWORKS. +** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off */ -#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS +#if SQLITE_ENABLE_LOCKING_STYLE /* ** Retry flock() calls that fail with EINTR @@ -25871,10 +32098,8 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ int tErrno = errno; /* unlock failed with an error */ lrc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(lrc) ){ - pFile->lastErrno = tErrno; - rc = lrc; - } + storeLastErrno(pFile, tErrno); + rc = lrc; } } else { int tErrno = errno; @@ -25882,7 +32107,7 @@ static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ /* someone else might have it reserved */ lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); if( IS_LOCK_ERROR(lrc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); rc = lrc; } } @@ -25948,7 +32173,7 @@ static int flockLock(sqlite3_file *id, int eFileLock) { /* didn't get, must be busy */ rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } } else { /* got it, set the type and return ok */ @@ -25977,7 +32202,7 @@ static int flockUnlock(sqlite3_file *id, int eFileLock) { assert( pFile ); OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); + pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); /* no-op if possible */ @@ -26007,12 +32232,9 @@ static int flockUnlock(sqlite3_file *id, int eFileLock) { ** Close a file. */ static int flockClose(sqlite3_file *id) { - int rc = SQLITE_OK; - if( id ){ - flockUnlock(id, NO_LOCK); - rc = closeUnixFile(id); - } - return rc; + assert( id!=0 ); + flockUnlock(id, NO_LOCK); + return closeUnixFile(id); } #endif /* SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORK */ @@ -26038,7 +32260,7 @@ static int flockClose(sqlite3_file *id) { ** to a non-zero value otherwise *pResOut is set to zero. The return value ** is set to SQLITE_OK unless an I/O error occurs during lock checking. */ -static int semCheckReservedLock(sqlite3_file *id, int *pResOut) { +static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) { int rc = SQLITE_OK; int reserved = 0; unixFile *pFile = (unixFile*)id; @@ -26055,13 +32277,12 @@ static int semCheckReservedLock(sqlite3_file *id, int *pResOut) { /* Otherwise see if some other process holds it. */ if( !reserved ){ sem_t *pSem = pFile->pInode->pSem; - struct stat statBuf; if( sem_trywait(pSem)==-1 ){ int tErrno = errno; if( EAGAIN != tErrno ){ rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK); - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } else { /* someone else has the lock when we are in NO_LOCK */ reserved = (pFile->eFileLock < SHARED_LOCK); @@ -26106,9 +32327,8 @@ static int semCheckReservedLock(sqlite3_file *id, int *pResOut) { ** This routine will only increase a lock. Use the sqlite3OsUnlock() ** routine to lower a locking level. */ -static int semLock(sqlite3_file *id, int eFileLock) { +static int semXLock(sqlite3_file *id, int eFileLock) { unixFile *pFile = (unixFile*)id; - int fd; sem_t *pSem = pFile->pInode->pSem; int rc = SQLITE_OK; @@ -26140,14 +32360,14 @@ static int semLock(sqlite3_file *id, int eFileLock) { ** If the locking level of the file descriptor is already at or below ** the requested locking level, this routine is a no-op. */ -static int semUnlock(sqlite3_file *id, int eFileLock) { +static int semXUnlock(sqlite3_file *id, int eFileLock) { unixFile *pFile = (unixFile*)id; sem_t *pSem = pFile->pInode->pSem; assert( pFile ); assert( pSem ); OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); + pFile->eFileLock, osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); /* no-op if possible */ @@ -26166,7 +32386,7 @@ static int semUnlock(sqlite3_file *id, int eFileLock) { int rc, tErrno = errno; rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK); if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } return rc; } @@ -26177,10 +32397,10 @@ static int semUnlock(sqlite3_file *id, int eFileLock) { /* ** Close a file. */ -static int semClose(sqlite3_file *id) { +static int semXClose(sqlite3_file *id) { if( id ){ unixFile *pFile = (unixFile*)id; - semUnlock(id, NO_LOCK); + semXUnlock(id, NO_LOCK); assert( pFile ); unixEnterMutex(); releaseInodeInfo(pFile); @@ -26268,7 +32488,7 @@ static int afpSetLock( setLockFlag ? SQLITE_IOERR_LOCK : SQLITE_IOERR_UNLOCK); #endif /* SQLITE_IGNORE_AFP_LOCK_ERRORS */ if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; + storeLastErrno(pFile, tErrno); } return rc; } else { @@ -26361,7 +32581,7 @@ static int afpLock(sqlite3_file *id, int eFileLock){ assert( pFile ); OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h, azFileLock(eFileLock), azFileLock(pFile->eFileLock), - azFileLock(pInode->eFileLock), pInode->nShared , getpid())); + azFileLock(pInode->eFileLock), pInode->nShared , osGetpid(0))); /* If there is already a lock of this type or more restrictive on the ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as @@ -26451,7 +32671,7 @@ static int afpLock(sqlite3_file *id, int eFileLock){ lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); if( IS_LOCK_ERROR(lrc1) ) { - pFile->lastErrno = lrc1Errno; + storeLastErrno(pFile, lrc1Errno); rc = lrc1; goto afp_end_lock; } else if( IS_LOCK_ERROR(lrc2) ){ @@ -26547,7 +32767,7 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { assert( pFile ); OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock, pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, - getpid())); + osGetpid(0))); assert( eFileLock<=SHARED_LOCK ); if( pFile->eFileLock<=eFileLock ){ @@ -26639,23 +32859,22 @@ static int afpUnlock(sqlite3_file *id, int eFileLock) { */ static int afpClose(sqlite3_file *id) { int rc = SQLITE_OK; - if( id ){ - unixFile *pFile = (unixFile*)id; - afpUnlock(id, NO_LOCK); - unixEnterMutex(); - if( pFile->pInode && pFile->pInode->nLock ){ - /* If there are outstanding locks, do not actually close the file just - ** yet because that would clear those locks. Instead, add the file - ** descriptor to pInode->aPending. It will be automatically closed when - ** the last lock is cleared. - */ - setPendingFd(pFile); - } - releaseInodeInfo(pFile); - sqlite3_free(pFile->lockingContext); - rc = closeUnixFile(id); - unixLeaveMutex(); + unixFile *pFile = (unixFile*)id; + assert( id!=0 ); + afpUnlock(id, NO_LOCK); + unixEnterMutex(); + if( pFile->pInode && pFile->pInode->nLock ){ + /* If there are outstanding locks, do not actually close the file just + ** yet because that would clear those locks. Instead, add the file + ** descriptor to pInode->aPending. It will be automatically closed when + ** the last lock is cleared. + */ + setPendingFd(pFile); } + releaseInodeInfo(pFile); + sqlite3_free(pFile->lockingContext); + rc = closeUnixFile(id); + unixLeaveMutex(); return rc; } @@ -26710,7 +32929,7 @@ static int nfsUnlock(sqlite3_file *id, int eFileLock){ ** NB: If you define USE_PREAD or USE_PREAD64, then it might also ** be necessary to define _XOPEN_SOURCE to be 500. This varies from ** one system to another. Since SQLite does not define USE_PREAD -** any any form by default, we will not attempt to define _XOPEN_SOURCE. +** in any form by default, we will not attempt to define _XOPEN_SOURCE. ** See tickets #2741 and #2681. ** ** To avoid stomping the errno value on a failed read the lastErrno value @@ -26725,7 +32944,6 @@ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ TIMER_START; assert( cnt==(cnt&0x1ffff) ); assert( id->h>2 ); - cnt &= 0x1ffff; do{ #if defined(USE_PREAD) got = osPread(id->h, pBuf, cnt, offset); @@ -26735,13 +32953,9 @@ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ SimulateIOError( got = -1 ); #else newOffset = lseek(id->h, offset, SEEK_SET); - SimulateIOError( newOffset-- ); - if( newOffset!=offset ){ - if( newOffset == -1 ){ - ((unixFile*)id)->lastErrno = errno; - }else{ - ((unixFile*)id)->lastErrno = 0; - } + SimulateIOError( newOffset = -1 ); + if( newOffset<0 ){ + storeLastErrno((unixFile*)id, errno); return -1; } got = osRead(id->h, pBuf, cnt); @@ -26750,7 +32964,7 @@ static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ if( got<0 ){ if( errno==EINTR ){ got = 1; continue; } prior = 0; - ((unixFile*)id)->lastErrno = errno; + storeLastErrno((unixFile*)id, errno); break; }else if( got>0 ){ cnt -= got; @@ -26815,7 +33029,7 @@ static int unixRead( /* lastErrno set by seekAndRead */ return SQLITE_IOERR_READ; }else{ - pFile->lastErrno = 0; /* not a system error */ + storeLastErrno(pFile, 0); /* not a system error */ /* Unread parts of the buffer must be zero-filled */ memset(&((char*)pBuf)[got], 0, amt-got); return SQLITE_IOERR_SHORT_READ; @@ -26840,21 +33054,21 @@ static int seekAndWriteFd( assert( nBuf==(nBuf&0x1ffff) ); assert( fd>2 ); + assert( piErrno!=0 ); nBuf &= 0x1ffff; TIMER_START; #if defined(USE_PREAD) - do{ rc = osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR ); + do{ rc = (int)osPwrite(fd, pBuf, nBuf, iOff); }while( rc<0 && errno==EINTR ); #elif defined(USE_PREAD64) - do{ rc = osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR); + do{ rc = (int)osPwrite64(fd, pBuf, nBuf, iOff);}while( rc<0 && errno==EINTR); #else do{ i64 iSeek = lseek(fd, iOff, SEEK_SET); - SimulateIOError( iSeek-- ); - - if( iSeek!=iOff ){ - if( piErrno ) *piErrno = (iSeek==-1 ? errno : 0); - return -1; + SimulateIOError( iSeek = -1 ); + if( iSeek<0 ){ + rc = -1; + break; } rc = osWrite(fd, pBuf, nBuf); }while( rc<0 && errno==EINTR ); @@ -26863,7 +33077,7 @@ static int seekAndWriteFd( TIMER_END; OSTRACE(("WRITE %-3d %5d %7lld %llu\n", fd, rc, iOff, TIMER_ELAPSED)); - if( rc<0 && piErrno ) *piErrno = errno; + if( rc<0 ) *piErrno = errno; return rc; } @@ -26926,7 +33140,7 @@ static int unixWrite( } #endif -#if SQLITE_MAX_MMAP_SIZE>0 +#if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0 /* Deal with as much of this write request as possible by transfering ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ @@ -26942,8 +33156,8 @@ static int unixWrite( } } #endif - - while( amt>0 && (wrote = seekAndWrite(pFile, offset, pBuf, amt))>0 ){ + + while( (wrote = seekAndWrite(pFile, offset, pBuf, amt))0 ){ amt -= wrote; offset += wrote; pBuf = &((char*)pBuf)[wrote]; @@ -26951,12 +33165,12 @@ static int unixWrite( SimulateIOError(( wrote=(-1), amt=1 )); SimulateDiskfullError(( wrote=0, amt=1 )); - if( amt>0 ){ + if( amt>wrote ){ if( wrote<0 && pFile->lastErrno!=ENOSPC ){ /* lastErrno set by seekAndWrite */ return SQLITE_IOERR_WRITE; }else{ - pFile->lastErrno = 0; /* not a system error */ + storeLastErrno(pFile, 0); /* not a system error */ return SQLITE_FULL; } } @@ -26977,9 +33191,9 @@ SQLITE_API int sqlite3_fullsync_count = 0; ** We do not trust systems to provide a working fdatasync(). Some do. ** Others do no. To be safe, we will stick with the (slightly slower) ** fsync(). If you know that your system does support fdatasync() correctly, -** then simply compile with -Dfdatasync=fdatasync +** then simply compile with -Dfdatasync=fdatasync or -DHAVE_FDATASYNC */ -#if !defined(fdatasync) +#if !defined(fdatasync) && !HAVE_FDATASYNC # define fdatasync fsync #endif @@ -27047,10 +33261,15 @@ static int full_fsync(int fd, int fullSync, int dataOnly){ #endif /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a - ** no-op + ** no-op. But go ahead and call fstat() to validate the file + ** descriptor as we need a method to provoke a failure during + ** coverate testing. */ #ifdef SQLITE_NO_SYNC - rc = SQLITE_OK; + { + struct stat buf; + rc = osFstat(fd, &buf); + } #elif HAVE_FULLFSYNC if( fullSync ){ rc = osFcntl(fd, F_FULLFSYNC, 0); @@ -27116,16 +33335,20 @@ static int openDirectory(const char *zFilename, int *pFd){ char zDirname[MAX_PATHNAME+1]; sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename); - for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--); + for(ii=(int)strlen(zDirname); ii>0 && zDirname[ii]!='/'; ii--); if( ii>0 ){ zDirname[ii] = '\0'; - fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0); - if( fd>=0 ){ - OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname)); - } + }else{ + if( zDirname[0]!='/' ) zDirname[0] = '.'; + zDirname[1] = 0; + } + fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0); + if( fd>=0 ){ + OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname)); } *pFd = fd; - return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname)); + if( fd>=0 ) return SQLITE_OK; + return unixLogError(SQLITE_CANTOPEN_BKPT, "openDirectory", zDirname); } /* @@ -27165,7 +33388,7 @@ static int unixSync(sqlite3_file *id, int flags){ rc = full_fsync(pFile->h, isFullsync, isDataOnly); SimulateIOError( rc=1 ); if( rc ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath); } @@ -27178,10 +33401,11 @@ static int unixSync(sqlite3_file *id, int flags){ OSTRACE(("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath, HAVE_FULLFSYNC, isFullsync)); rc = osOpenDirectory(pFile->zPath, &dirfd); - if( rc==SQLITE_OK && dirfd>=0 ){ + if( rc==SQLITE_OK ){ full_fsync(dirfd, 0, 0); robust_close(pFile, dirfd, __LINE__); - }else if( rc==SQLITE_CANTOPEN ){ + }else{ + assert( rc==SQLITE_CANTOPEN ); rc = SQLITE_OK; } pFile->ctrlFlags &= ~UNIXFILE_DIRSYNC; @@ -27207,9 +33431,9 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){ nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; } - rc = robust_ftruncate(pFile->h, (off_t)nByte); + rc = robust_ftruncate(pFile->h, nByte); if( rc ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath); }else{ #ifdef SQLITE_DEBUG @@ -27249,7 +33473,7 @@ static int unixFileSize(sqlite3_file *id, i64 *pSize){ rc = osFstat(((unixFile*)id)->h, &buf); SimulateIOError( rc=1 ); if( rc!=0 ){ - ((unixFile*)id)->lastErrno = errno; + storeLastErrno((unixFile*)id, errno); return SQLITE_IOERR_FSTAT; } *pSize = buf.st_size; @@ -27285,7 +33509,9 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ i64 nSize; /* Required file size */ struct stat buf; /* Used to hold return values of fstat() */ - if( osFstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT; + if( osFstat(pFile->h, &buf) ){ + return SQLITE_IOERR_FSTAT; + } nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk; if( nSize>(i64)buf.st_size ){ @@ -27300,24 +33526,24 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ }while( err==EINTR ); if( err ) return SQLITE_IOERR_WRITE; #else - /* If the OS does not have posix_fallocate(), fake it. First use - ** ftruncate() to set the file size, then write a single byte to - ** the last byte in each block within the extended region. This - ** is the same technique used by glibc to implement posix_fallocate() - ** on systems that do not have a real fallocate() system call. + /* If the OS does not have posix_fallocate(), fake it. Write a + ** single byte to the last byte in each block that falls entirely + ** within the extended region. Then, if required, a single byte + ** at offset (nSize-1), to set the size of the file correctly. + ** This is a similar technique to that used by glibc on systems + ** that do not have a real fallocate() call. */ int nBlk = buf.st_blksize; /* File-system block size */ + int nWrite = 0; /* Number of bytes written by seekAndWrite */ i64 iWrite; /* Next offset to write to */ - if( robust_ftruncate(pFile->h, nSize) ){ - pFile->lastErrno = errno; - return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath); - } - iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1; - while( iWrite=buf.st_size ); + assert( ((iWrite+1)%nBlk)==0 ); + for(/*no-op*/; iWrite=nSize ) iWrite = nSize - 1; + nWrite = seekAndWrite(pFile, iWrite, "", 1); if( nWrite!=1 ) return SQLITE_IOERR_WRITE; - iWrite += nBlk; } #endif } @@ -27328,7 +33554,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ int rc; if( pFile->szChunk<=0 ){ if( robust_ftruncate(pFile->h, nByte) ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath); } } @@ -27342,7 +33568,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){ } /* -** If *pArg is inititially negative then this is a query. Set *pArg to +** If *pArg is initially negative then this is a query. Set *pArg to ** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set. ** ** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags. @@ -27370,7 +33596,7 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ *(int*)pArg = pFile->eFileLock; return SQLITE_OK; } - case SQLITE_LAST_ERRNO: { + case SQLITE_FCNTL_LAST_ERRNO: { *(int*)pArg = pFile->lastErrno; return SQLITE_OK; } @@ -27398,7 +33624,7 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ return SQLITE_OK; } case SQLITE_FCNTL_TEMPFILENAME: { - char *zTFile = sqlite3_malloc( pFile->pVfs->mxPathname ); + char *zTFile = sqlite3_malloc64( pFile->pVfs->mxPathname ); if( zTFile ){ unixGetTempname(pFile->pVfs->mxPathname, zTFile); *(char**)pArg = zTFile; @@ -27439,8 +33665,8 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ } #endif #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) - case SQLITE_SET_LOCKPROXYFILE: - case SQLITE_GET_LOCKPROXYFILE: { + case SQLITE_FCNTL_SET_LOCKPROXYFILE: + case SQLITE_FCNTL_GET_LOCKPROXYFILE: { return proxyFileControl(id,op,pArg); } #endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */ @@ -27549,7 +33775,7 @@ static int unixSectorSize(sqlite3_file *id){ ** Return the device characteristics for the file. ** ** This VFS is set up to return SQLITE_IOCAP_POWERSAFE_OVERWRITE by default. -** However, that choice is contraversial since technically the underlying +** However, that choice is controversial since technically the underlying ** file system does not always provide powersafe overwrites. (In other ** words, after a power-loss event, parts of the file that were never ** written might end up being altered.) However, non-PSOW behavior is very, @@ -27571,8 +33797,27 @@ static int unixDeviceCharacteristics(sqlite3_file *id){ return rc; } -#ifndef SQLITE_OMIT_WAL +#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 +/* +** Return the system page size. +** +** This function should not be called directly by other code in this file. +** Instead, it should be called via macro osGetpagesize(). +*/ +static int unixGetpagesize(void){ +#if OS_VXWORKS + return 1024; +#elif defined(_BSD_SOURCE) + return getpagesize(); +#else + return (int)sysconf(_SC_PAGESIZE); +#endif +} + +#endif /* !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 */ + +#ifndef SQLITE_OMIT_WAL /* ** Object used to represent an shared memory buffer. @@ -27656,22 +33901,24 @@ struct unixShm { ** otherwise. */ static int unixShmSystemLock( - unixShmNode *pShmNode, /* Apply locks to this open shared-memory segment */ + unixFile *pFile, /* Open connection to the WAL file */ int lockType, /* F_UNLCK, F_RDLCK, or F_WRLCK */ int ofst, /* First byte of the locking range */ int n /* Number of bytes to lock */ ){ - struct flock f; /* The posix advisory locking structure */ - int rc = SQLITE_OK; /* Result code form fcntl() */ + unixShmNode *pShmNode; /* Apply locks to this open shared-memory segment */ + struct flock f; /* The posix advisory locking structure */ + int rc = SQLITE_OK; /* Result code form fcntl() */ /* Access to the unixShmNode object is serialized by the caller */ + pShmNode = pFile->pInode->pShmNode; assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 ); /* Shared locks never span more than one byte */ assert( n==1 || lockType!=F_RDLCK ); /* Locks are within range */ - assert( n>=1 && n=1 && n<=SQLITE_SHM_NLOCK ); if( pShmNode->h>=0 ){ /* Initialize the locking parameters */ @@ -27723,6 +33970,22 @@ static int unixShmSystemLock( return rc; } +/* +** Return the minimum number of 32KB shm regions that should be mapped at +** a time, assuming that each mapping must be an integer multiple of the +** current system page-size. +** +** Usually, this is 1. The exception seems to be systems that are configured +** to use 64KB pages - in this case each mapping must cover at least two +** shm regions. +*/ +static int unixShmRegionPerMap(void){ + int shmsz = 32*1024; /* SHM region size */ + int pgsz = osGetpagesize(); /* System page size */ + assert( ((pgsz-1)&pgsz)==0 ); /* Page size must be a power of 2 */ + if( pgszpInode->pShmNode; assert( unixMutexHeld() ); - if( p && p->nRef==0 ){ + if( p && ALWAYS(p->nRef==0) ){ + int nShmPerMap = unixShmRegionPerMap(); int i; assert( p->pInode==pFd->pInode ); sqlite3_mutex_free(p->mutex); - for(i=0; inRegion; i++){ + for(i=0; inRegion; i+=nShmPerMap){ if( p->h>=0 ){ osMunmap(p->apRegion[i], p->szRegion); }else{ @@ -27798,8 +34062,8 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ int nShmFilename; /* Size of the SHM filename in bytes */ /* Allocate space for the new unixShm object. */ - p = sqlite3_malloc( sizeof(*p) ); - if( p==0 ) return SQLITE_NOMEM; + p = sqlite3_malloc64( sizeof(*p) ); + if( p==0 ) return SQLITE_NOMEM_BKPT; memset(p, 0, sizeof(*p)); assert( pDbFd->pShm==0 ); @@ -27811,12 +34075,15 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ pShmNode = pInode->pShmNode; if( pShmNode==0 ){ struct stat sStat; /* fstat() info for database file */ +#ifndef SQLITE_SHM_DIRECTORY + const char *zBasePath = pDbFd->zPath; +#endif /* Call fstat() to figure out the permissions on the database file. If ** a new *-shm file is created, an attempt will be made to create it ** with the same permissions. */ - if( osFstat(pDbFd->h, &sStat) && pInode->bProcessLock==0 ){ + if( osFstat(pDbFd->h, &sStat) ){ rc = SQLITE_IOERR_FSTAT; goto shm_open_err; } @@ -27824,11 +34091,11 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ #ifdef SQLITE_SHM_DIRECTORY nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 31; #else - nShmFilename = 6 + (int)strlen(pDbFd->zPath); + nShmFilename = 6 + (int)strlen(zBasePath); #endif - pShmNode = sqlite3_malloc( sizeof(*pShmNode) + nShmFilename ); + pShmNode = sqlite3_malloc64( sizeof(*pShmNode) + nShmFilename ); if( pShmNode==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto shm_open_err; } memset(pShmNode, 0, sizeof(*pShmNode)+nShmFilename); @@ -27838,16 +34105,18 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x", (u32)sStat.st_ino, (u32)sStat.st_dev); #else - sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", pDbFd->zPath); + sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", zBasePath); sqlite3FileSuffix3(pDbFd->zPath, zShmFilename); #endif pShmNode->h = -1; pDbFd->pInode->pShmNode = pShmNode; pShmNode->pInode = pDbFd->pInode; - pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ - rc = SQLITE_NOMEM; - goto shm_open_err; + if( sqlite3GlobalConfig.bCoreMutex ){ + pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); + if( pShmNode->mutex==0 ){ + rc = SQLITE_NOMEM_BKPT; + goto shm_open_err; + } } if( pInode->bProcessLock==0 ){ @@ -27866,19 +34135,19 @@ static int unixOpenSharedMemory(unixFile *pDbFd){ ** is owned by the same user that owns the original database. Otherwise, ** the original owner will not be able to connect. */ - osFchown(pShmNode->h, sStat.st_uid, sStat.st_gid); + robustFchown(pShmNode->h, sStat.st_uid, sStat.st_gid); /* Check to see if another process is holding the dead-man switch. ** If not, truncate the file to zero length. */ rc = SQLITE_OK; - if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){ + if( unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){ if( robust_ftruncate(pShmNode->h, 0) ){ rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename); } } if( rc==SQLITE_OK ){ - rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1); + rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1); } if( rc ) goto shm_open_err; } @@ -27944,6 +34213,8 @@ static int unixShmMap( unixShm *p; unixShmNode *pShmNode; int rc = SQLITE_OK; + int nShmPerMap = unixShmRegionPerMap(); + int nReqRegion; /* If the shared-memory file has not yet been opened, open it now. */ if( pDbFd->pShm==0 ){ @@ -27959,9 +34230,12 @@ static int unixShmMap( assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); - if( pShmNode->nRegion<=iRegion ){ + /* Minimum number of regions required to be mapped. */ + nReqRegion = ((iRegion+nShmPerMap) / nShmPerMap) * nShmPerMap; + + if( pShmNode->nRegionszRegion = szRegion; @@ -27998,7 +34272,8 @@ static int unixShmMap( /* Write to the last byte of each newly allocated or extended page */ assert( (nByte % pgsz)==0 ); for(iPg=(sStat.st_size/pgsz); iPg<(nByte/pgsz); iPg++){ - if( seekAndWriteFd(pShmNode->h, iPg*pgsz + pgsz-1, "", 1, 0)!=1 ){ + int x = 0; + if( seekAndWriteFd(pShmNode->h, iPg*pgsz + pgsz-1, "", 1, &x)!=1 ){ const char *zFile = pShmNode->zFilename; rc = unixLogError(SQLITE_IOERR_SHMSIZE, "write", zFile); goto shmpage_out; @@ -28010,17 +34285,19 @@ static int unixShmMap( /* Map the requested memory region into this processes address space. */ apNew = (char **)sqlite3_realloc( - pShmNode->apRegion, (iRegion+1)*sizeof(char *) + pShmNode->apRegion, nReqRegion*sizeof(char *) ); if( !apNew ){ - rc = SQLITE_IOERR_NOMEM; + rc = SQLITE_IOERR_NOMEM_BKPT; goto shmpage_out; } pShmNode->apRegion = apNew; - while(pShmNode->nRegion<=iRegion){ + while( pShmNode->nRegionh>=0 ){ - pMem = osMmap(0, szRegion, + pMem = osMmap(0, nMap, pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, MAP_SHARED, pShmNode->h, szRegion*(i64)pShmNode->nRegion ); @@ -28029,15 +34306,18 @@ static int unixShmMap( goto shmpage_out; } }else{ - pMem = sqlite3_malloc(szRegion); + pMem = sqlite3_malloc64(szRegion); if( pMem==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto shmpage_out; } memset(pMem, 0, szRegion); } - pShmNode->apRegion[pShmNode->nRegion] = pMem; - pShmNode->nRegion++; + + for(i=0; iapRegion[pShmNode->nRegion+i] = &((char*)pMem)[szRegion*i]; + } + pShmNode->nRegion += nShmPerMap; } } @@ -28100,7 +34380,7 @@ static int unixShmLock( /* Unlock the system-level locks */ if( (mask & allMask)==0 ){ - rc = unixShmSystemLock(pShmNode, F_UNLCK, ofst+UNIX_SHM_BASE, n); + rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n); }else{ rc = SQLITE_OK; } @@ -28128,7 +34408,7 @@ static int unixShmLock( /* Get shared locks at the system level, if necessary */ if( rc==SQLITE_OK ){ if( (allShared & mask)==0 ){ - rc = unixShmSystemLock(pShmNode, F_RDLCK, ofst+UNIX_SHM_BASE, n); + rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n); }else{ rc = SQLITE_OK; } @@ -28153,7 +34433,7 @@ static int unixShmLock( ** also mark the local connection as being locked. */ if( rc==SQLITE_OK ){ - rc = unixShmSystemLock(pShmNode, F_WRLCK, ofst+UNIX_SHM_BASE, n); + rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n); if( rc==SQLITE_OK ){ assert( (p->sharedMask & mask)==0 ); p->exclMask |= mask; @@ -28162,7 +34442,7 @@ static int unixShmLock( } sqlite3_mutex_leave(pShmNode->mutex); OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n", - p->id, getpid(), p->sharedMask, p->exclMask)); + p->id, osGetpid(0), p->sharedMask, p->exclMask)); return rc; } @@ -28176,7 +34456,8 @@ static void unixShmBarrier( sqlite3_file *fd /* Database file holding the shared memory */ ){ UNUSED_PARAMETER(fd); - unixEnterMutex(); + sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ + unixEnterMutex(); /* Also mutex, for redundancy */ unixLeaveMutex(); } @@ -28221,7 +34502,9 @@ static int unixShmUnmap( assert( pShmNode->nRef>0 ); pShmNode->nRef--; if( pShmNode->nRef==0 ){ - if( deleteFlag && pShmNode->h>=0 ) osUnlink(pShmNode->zFilename); + if( deleteFlag && pShmNode->h>=0 ){ + osUnlink(pShmNode->zFilename); + } unixShmPurge(pDbFd); } unixLeaveMutex(); @@ -28251,19 +34534,6 @@ static void unixUnmapfile(unixFile *pFd){ } } -/* -** Return the system page size. -*/ -static int unixGetPagesize(void){ -#if HAVE_MREMAP - return 512; -#elif defined(_BSD_SOURCE) - return getpagesize(); -#else - return (int)sysconf(_SC_PAGESIZE); -#endif -} - /* ** Attempt to set the size of the memory mapping maintained by file ** descriptor pFd to nNew bytes. Any existing mapping is discarded. @@ -28297,11 +34567,17 @@ static void unixRemapfile( assert( pFd->mmapSizeActual>=pFd->mmapSize ); assert( MAP_FAILED!=0 ); +#ifdef SQLITE_MMAP_READWRITE if( (pFd->ctrlFlags & UNIXFILE_RDONLY)==0 ) flags |= PROT_WRITE; +#endif if( pOrig ){ - const int szSyspage = unixGetPagesize(); +#if HAVE_MREMAP + i64 nReuse = pFd->mmapSize; +#else + const int szSyspage = osGetpagesize(); i64 nReuse = (pFd->mmapSize & ~(szSyspage-1)); +#endif u8 *pReq = &pOrig[nReuse]; /* Unmap any pages of the existing mapping that cannot be reused. */ @@ -28365,17 +34641,14 @@ static void unixRemapfile( ** recreated as a result of outstanding references) or an SQLite error ** code otherwise. */ -static int unixMapfile(unixFile *pFd, i64 nByte){ - i64 nMap = nByte; - int rc; - +static int unixMapfile(unixFile *pFd, i64 nMap){ assert( nMap>=0 || pFd->nFetchOut==0 ); + assert( nMap>0 || (pFd->mmapSize==0 && pFd->pMapRegion==0) ); if( pFd->nFetchOut>0 ) return SQLITE_OK; if( nMap<0 ){ struct stat statbuf; /* Low-level file information */ - rc = osFstat(pFd->h, &statbuf); - if( rc!=SQLITE_OK ){ + if( osFstat(pFd->h, &statbuf) ){ return SQLITE_IOERR_FSTAT; } nMap = statbuf.st_size; @@ -28384,12 +34657,9 @@ static int unixMapfile(unixFile *pFd, i64 nByte){ nMap = pFd->mmapSizeMax; } + assert( nMap>0 || (pFd->mmapSize==0 && pFd->pMapRegion==0) ); if( nMap!=pFd->mmapSize ){ - if( nMap>0 ){ - unixRemapfile(pFd, nMap); - }else{ - unixUnmapfile(pFd); - } + unixRemapfile(pFd, nMap); } return SQLITE_OK; @@ -28486,7 +34756,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){ ** looks at the filesystem type and tries to guess the best locking ** strategy from that. ** -** For finder-funtion F, two objects are created: +** For finder-function F, two objects are created: ** ** (1) The real finder-function named "FImpt()". ** @@ -28507,7 +34777,7 @@ static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){ ** * An I/O method finder function called FINDER that returns a pointer ** to the METHOD object in the previous bullet. */ -#define IOMETHODS(FINDER, METHOD, VERSION, CLOSE, LOCK, UNLOCK, CKLOCK) \ +#define IOMETHODS(FINDER,METHOD,VERSION,CLOSE,LOCK,UNLOCK,CKLOCK,SHMMAP) \ static const sqlite3_io_methods METHOD = { \ VERSION, /* iVersion */ \ CLOSE, /* xClose */ \ @@ -28522,7 +34792,7 @@ static const sqlite3_io_methods METHOD = { \ unixFileControl, /* xFileControl */ \ unixSectorSize, /* xSectorSize */ \ unixDeviceCharacteristics, /* xDeviceCapabilities */ \ - unixShmMap, /* xShmMap */ \ + SHMMAP, /* xShmMap */ \ unixShmLock, /* xShmLock */ \ unixShmBarrier, /* xShmBarrier */ \ unixShmUnmap, /* xShmUnmap */ \ @@ -28548,16 +34818,18 @@ IOMETHODS( unixClose, /* xClose method */ unixLock, /* xLock method */ unixUnlock, /* xUnlock method */ - unixCheckReservedLock /* xCheckReservedLock method */ + unixCheckReservedLock, /* xCheckReservedLock method */ + unixShmMap /* xShmMap method */ ) IOMETHODS( nolockIoFinder, /* Finder function name */ nolockIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ + 3, /* shared memory is disabled */ nolockClose, /* xClose method */ nolockLock, /* xLock method */ nolockUnlock, /* xUnlock method */ - nolockCheckReservedLock /* xCheckReservedLock method */ + nolockCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) IOMETHODS( dotlockIoFinder, /* Finder function name */ @@ -28566,10 +34838,11 @@ IOMETHODS( dotlockClose, /* xClose method */ dotlockLock, /* xLock method */ dotlockUnlock, /* xUnlock method */ - dotlockCheckReservedLock /* xCheckReservedLock method */ + dotlockCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) -#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS +#if SQLITE_ENABLE_LOCKING_STYLE IOMETHODS( flockIoFinder, /* Finder function name */ flockIoMethods, /* sqlite3_io_methods object name */ @@ -28577,7 +34850,8 @@ IOMETHODS( flockClose, /* xClose method */ flockLock, /* xLock method */ flockUnlock, /* xUnlock method */ - flockCheckReservedLock /* xCheckReservedLock method */ + flockCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) #endif @@ -28586,10 +34860,11 @@ IOMETHODS( semIoFinder, /* Finder function name */ semIoMethods, /* sqlite3_io_methods object name */ 1, /* shared memory is disabled */ - semClose, /* xClose method */ - semLock, /* xLock method */ - semUnlock, /* xUnlock method */ - semCheckReservedLock /* xCheckReservedLock method */ + semXClose, /* xClose method */ + semXLock, /* xLock method */ + semXUnlock, /* xUnlock method */ + semXCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) #endif @@ -28601,7 +34876,8 @@ IOMETHODS( afpClose, /* xClose method */ afpLock, /* xLock method */ afpUnlock, /* xUnlock method */ - afpCheckReservedLock /* xCheckReservedLock method */ + afpCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) #endif @@ -28626,7 +34902,8 @@ IOMETHODS( proxyClose, /* xClose method */ proxyLock, /* xLock method */ proxyUnlock, /* xUnlock method */ - proxyCheckReservedLock /* xCheckReservedLock method */ + proxyCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) #endif @@ -28639,7 +34916,8 @@ IOMETHODS( unixClose, /* xClose method */ unixLock, /* xLock method */ nfsUnlock, /* xUnlock method */ - unixCheckReservedLock /* xCheckReservedLock method */ + unixCheckReservedLock, /* xCheckReservedLock method */ + 0 /* xShmMap method */ ) #endif @@ -28709,15 +34987,13 @@ static const sqlite3_io_methods #endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -#if OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE -/* -** This "finder" function attempts to determine the best locking strategy -** for the database file "filePath". It then returns the sqlite3_io_methods -** object that implements that strategy. -** -** This is for VXWorks only. +#if OS_VXWORKS +/* +** This "finder" function for VxWorks checks to see if posix advisory +** locking works. If it does, then that is what is used. If it does not +** work, then fallback to named semaphore locking. */ -static const sqlite3_io_methods *autolockIoFinderImpl( +static const sqlite3_io_methods *vxworksIoFinderImpl( const char *filePath, /* name of the database file */ unixFile *pNew /* the open file object */ ){ @@ -28743,12 +35019,12 @@ static const sqlite3_io_methods *autolockIoFinderImpl( } } static const sqlite3_io_methods - *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl; + *(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl; -#endif /* OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE */ +#endif /* OS_VXWORKS */ /* -** An abstract type for a pointer to a IO method finder function: +** An abstract type for a pointer to an IO method finder function: */ typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*); @@ -28810,7 +35086,7 @@ static int fillInUnixFile( pNew->pId = vxworksFindFileId(zFilename); if( pNew->pId==0 ){ ctrlFlags |= UNIXFILE_NOLOCK; - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } #endif @@ -28864,9 +35140,9 @@ static int fillInUnixFile( ** the afpLockingContext. */ afpLockingContext *pCtx; - pNew->lockingContext = pCtx = sqlite3_malloc( sizeof(*pCtx) ); + pNew->lockingContext = pCtx = sqlite3_malloc64( sizeof(*pCtx) ); if( pCtx==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ /* NB: zFilename exists and remains valid until the file is closed ** according to requirement F11141. So we do not need to make a @@ -28894,9 +35170,9 @@ static int fillInUnixFile( int nFilename; assert( zFilename!=0 ); nFilename = (int)strlen(zFilename) + 6; - zLockFile = (char *)sqlite3_malloc(nFilename); + zLockFile = (char *)sqlite3_malloc64(nFilename); if( zLockFile==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ sqlite3_snprintf(nFilename, zLockFile, "%s" DOTLOCK_SUFFIX, zFilename); } @@ -28919,7 +35195,7 @@ static int fillInUnixFile( if( zSemName[n]=='/' ) zSemName[n] = '_'; pNew->pInode->pSem = sem_open(zSemName, O_CREAT, 0666, 1); if( pNew->pInode->pSem == SEM_FAILED ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; pNew->pInode->aSemName[0] = '\0'; } } @@ -28927,7 +35203,7 @@ static int fillInUnixFile( } #endif - pNew->lastErrno = 0; + storeLastErrno(pNew, 0); #if OS_VXWORKS if( rc!=SQLITE_OK ){ if( h>=0 ) robust_close(pNew, h, __LINE__); @@ -28952,29 +35228,31 @@ static int fillInUnixFile( */ static const char *unixTempFileDir(void){ static const char *azDirs[] = { - 0, 0, 0, "/var/tmp", "/usr/tmp", "/tmp", - 0 /* List terminator */ + "." }; - unsigned int i; + unsigned int i = 0; struct stat buf; - const char *zDir = 0; + const char *zDir = sqlite3_temp_directory; - azDirs[0] = sqlite3_temp_directory; - if( !azDirs[1] ) azDirs[1] = getenv("SQLITE_TMPDIR"); - if( !azDirs[2] ) azDirs[2] = getenv("TMPDIR"); - for(i=0; i=sizeof(azDirs)/sizeof(azDirs[0]) ) break; + zDir = azDirs[i++]; } - return zDir; + return 0; } /* @@ -28983,38 +35261,26 @@ static const char *unixTempFileDir(void){ ** pVfs->mxPathname bytes. */ static int unixGetTempname(int nBuf, char *zBuf){ - static const unsigned char zChars[] = - "abcdefghijklmnopqrstuvwxyz" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "0123456789"; - unsigned int i, j; const char *zDir; + int iLimit = 0; /* It's odd to simulate an io-error here, but really this is just ** using the io-error infrastructure to test that SQLite handles this ** function failing. */ + zBuf[0] = 0; SimulateIOError( return SQLITE_IOERR ); zDir = unixTempFileDir(); - if( zDir==0 ) zDir = "."; - - /* Check that the output buffer is large enough for the temporary file - ** name. If it is not, return SQLITE_ERROR. - */ - if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 18) >= (size_t)nBuf ){ - return SQLITE_ERROR; - } - + if( zDir==0 ) return SQLITE_IOERR_GETTEMPPATH; do{ - sqlite3_snprintf(nBuf-18, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir); - j = (int)strlen(zBuf); - sqlite3_randomness(15, &zBuf[j]); - for(i=0; i<15; i++, j++){ - zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; - } - zBuf[j] = 0; - zBuf[j+1] = 0; + u64 r; + sqlite3_randomness(sizeof(r), &r); + assert( nBuf>2 ); + zBuf[nBuf-2] = 0; + sqlite3_snprintf(nBuf, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX"%llx%c", + zDir, r, 0); + if( zBuf[nBuf-2]!=0 || (iLimit++)>10 ) return SQLITE_ERROR; }while( osAccess(zBuf,0)==0 ); return SQLITE_OK; } @@ -29062,14 +35328,14 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ ** descriptor on the same path, fail, and return an error to SQLite. ** ** Even if a subsequent open() call does succeed, the consequences of - ** not searching for a resusable file descriptor are not dire. */ + ** not searching for a reusable file descriptor are not dire. */ if( 0==osStat(zPath, &sStat) ){ unixInodeInfo *pInode; unixEnterMutex(); pInode = inodeList; while( pInode && (pInode->fileId.dev!=sStat.st_dev - || pInode->fileId.ino!=sStat.st_ino) ){ + || pInode->fileId.ino!=(u64)sStat.st_ino) ){ pInode = pInode->pNext; } if( pInode ){ @@ -29086,6 +35352,27 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ return pUnused; } +/* +** Find the mode, uid and gid of file zFile. +*/ +static int getFileMode( + const char *zFile, /* File name */ + mode_t *pMode, /* OUT: Permissions of zFile */ + uid_t *pUid, /* OUT: uid of zFile. */ + gid_t *pGid /* OUT: gid of zFile. */ +){ + struct stat sStat; /* Output of stat() on database file */ + int rc = SQLITE_OK; + if( 0==osStat(zFile, &sStat) ){ + *pMode = sStat.st_mode & 0777; + *pUid = sStat.st_uid; + *pGid = sStat.st_gid; + }else{ + rc = SQLITE_IOERR_FSTAT; + } + return rc; +} + /* ** This function is called by unixOpen() to determine the unix permissions ** to create new files with. If no error occurs, then SQLITE_OK is returned @@ -29093,7 +35380,7 @@ static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ ** written to *pMode. If an IO error occurs, an SQLite error code is ** returned and the value of *pMode is not modified. ** -** In most cases cases, this routine sets *pMode to 0, which will become +** In most cases, this routine sets *pMode to 0, which will become ** an indication to robust_open() to create the file using ** SQLITE_DEFAULT_FILE_PERMISSIONS adjusted by the umask. ** But if the file being opened is a WAL or regular journal file, then @@ -29121,7 +35408,6 @@ static int findCreateFileMode( if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){ char zDb[MAX_PATHNAME+1]; /* Database file path */ int nDb; /* Number of valid bytes in zDb */ - struct stat sStat; /* Output of stat() on database file */ /* zPath is a path to a WAL or journal file. The following block derives ** the path to the associated database file from zPath. This block handles @@ -29136,28 +35422,34 @@ static int findCreateFileMode( ** used by the test_multiplex.c module. */ nDb = sqlite3Strlen30(zPath) - 1; -#ifdef SQLITE_ENABLE_8_3_NAMES - while( nDb>0 && sqlite3Isalnum(zPath[nDb]) ) nDb--; - if( nDb==0 || zPath[nDb]!='-' ) return SQLITE_OK; -#else while( zPath[nDb]!='-' ){ +#ifndef SQLITE_ENABLE_8_3_NAMES + /* In the normal case (8+3 filenames disabled) the journal filename + ** is guaranteed to contain a '-' character. */ assert( nDb>0 ); - assert( zPath[nDb]!='\n' ); + assert( sqlite3Isalnum(zPath[nDb]) ); +#else + /* If 8+3 names are possible, then the journal file might not contain + ** a '-' character. So check for that case and return early. */ + if( nDb==0 || zPath[nDb]=='.' ) return SQLITE_OK; +#endif nDb--; } -#endif memcpy(zDb, zPath, nDb); zDb[nDb] = '\0'; - if( 0==osStat(zDb, &sStat) ){ - *pMode = sStat.st_mode & 0777; - *pUid = sStat.st_uid; - *pGid = sStat.st_gid; - }else{ - rc = SQLITE_IOERR_FSTAT; - } + rc = getFileMode(zDb, pMode, pUid, pGid); }else if( flags & SQLITE_OPEN_DELETEONCLOSE ){ *pMode = 0600; + }else if( flags & SQLITE_OPEN_URI ){ + /* If this is a main database file and the file was opened using a URI + ** filename, check for the "modeof" parameter. If present, interpret + ** its value as a filename and try to copy the mode, uid and gid from + ** that file. */ + const char *z = sqlite3_uri_parameter(zPath, "modeof"); + if( z ){ + rc = getFileMode(z, pMode, pUid, pGid); + } } return rc; } @@ -29258,8 +35550,8 @@ static int unixOpen( ** the same instant might all reset the PRNG. But multiple resets ** are harmless. */ - if( randomnessPid!=getpid() ){ - randomnessPid = getpid(); + if( randomnessPid!=osGetpid(0) ){ + randomnessPid = osGetpid(0); sqlite3_randomness(0,0); } @@ -29271,9 +35563,9 @@ static int unixOpen( if( pUnused ){ fd = pUnused->fd; }else{ - pUnused = sqlite3_malloc(sizeof(*pUnused)); + pUnused = sqlite3_malloc64(sizeof(*pUnused)); if( !pUnused ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } } p->pUnused = pUnused; @@ -29286,7 +35578,7 @@ static int unixOpen( }else if( !zName ){ /* If zName is NULL, the upper layer is requesting a temp file. */ assert(isDelete && !syncDir); - rc = unixGetTempname(MAX_PATHNAME+2, zTmpname); + rc = unixGetTempname(pVfs->mxPathname, zTmpname); if( rc!=SQLITE_OK ){ return rc; } @@ -29319,7 +35611,8 @@ static int unixOpen( } fd = robust_open(zName, openFlags, openMode); OSTRACE(("OPENX %-3d %s 0%o\n", fd, zName, openFlags)); - if( fd<0 && errno!=EISDIR && isReadWrite && !isExclusive ){ + assert( !isExclusive || (openFlags & O_CREAT)!=0 ); + if( fd<0 && errno!=EISDIR && isReadWrite ){ /* Failed to open the file for read/write access. Try read-only. */ flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE); openFlags &= ~(O_RDWR|O_CREAT); @@ -29338,7 +35631,7 @@ static int unixOpen( ** the same as the original database. */ if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){ - osFchown(fd, uid, gid); + robustFchown(fd, uid, gid); } } assert( fd>=0 ); @@ -29354,6 +35647,12 @@ static int unixOpen( if( isDelete ){ #if OS_VXWORKS zPath = zName; +#elif defined(SQLITE_UNLINK_AFTER_CLOSE) + zPath = sqlite3_mprintf("%s", zName); + if( zPath==0 ){ + robust_close(p, fd, __LINE__); + return SQLITE_NOMEM_BKPT; + } #else osUnlink(zName); #endif @@ -29363,24 +35662,25 @@ static int unixOpen( p->openFlags = openFlags; } #endif - - noLock = eType!=SQLITE_OPEN_MAIN_DB; - #if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE if( fstatfs(fd, &fsInfo) == -1 ){ - ((unixFile*)pFile)->lastErrno = errno; + storeLastErrno(p, errno); robust_close(p, fd, __LINE__); return SQLITE_IOERR_ACCESS; } if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) { ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS; } + if (0 == strncmp("exfat", fsInfo.f_fstypename, 5)) { + ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS; + } #endif /* Set up appropriate ctrlFlags */ if( isDelete ) ctrlFlags |= UNIXFILE_DELETE; if( isReadonly ) ctrlFlags |= UNIXFILE_RDONLY; + noLock = eType!=SQLITE_OPEN_MAIN_DB; if( noLock ) ctrlFlags |= UNIXFILE_NOLOCK; if( syncDir ) ctrlFlags |= UNIXFILE_DIRSYNC; if( flags & SQLITE_OPEN_URI ) ctrlFlags |= UNIXFILE_URI; @@ -29398,19 +35698,6 @@ static int unixOpen( if( envforce!=NULL ){ useProxy = atoi(envforce)>0; }else{ - if( statfs(zPath, &fsInfo) == -1 ){ - /* In theory, the close(fd) call is sub-optimal. If the file opened - ** with fd is a database file, and there are other connections open - ** on that file that are currently holding advisory locks on it, - ** then the call to close() will cancel those locks. In practice, - ** we're assuming that statfs() doesn't fail very often. At least - ** not while other file descriptors opened by the same process on - ** the same file are working. */ - p->lastErrno = errno; - robust_close(p, fd, __LINE__); - rc = SQLITE_IOERR_ACCESS; - goto open_finished; - } useProxy = !(fsInfo.f_flags&MNT_LOCAL); } if( useProxy ){ @@ -29454,7 +35741,11 @@ static int unixDelete( UNUSED_PARAMETER(NotUsed); SimulateIOError(return SQLITE_IOERR_DELETE); if( osUnlink(zPath)==(-1) ){ - if( errno==ENOENT ){ + if( errno==ENOENT +#if OS_VXWORKS + || osAccess(zPath,0)!=0 +#endif + ){ rc = SQLITE_IOERR_DELETE_NOENT; }else{ rc = unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath); @@ -29466,16 +35757,12 @@ static int unixDelete( int fd; rc = osOpenDirectory(zPath, &fd); if( rc==SQLITE_OK ){ -#if OS_VXWORKS - if( fsync(fd)==-1 ) -#else - if( fsync(fd) ) -#endif - { + if( full_fsync(fd,0,0) ){ rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath); } robust_close(0, fd, __LINE__); - }else if( rc==SQLITE_CANTOPEN ){ + }else{ + assert( rc==SQLITE_CANTOPEN ); rc = SQLITE_OK; } } @@ -29499,33 +35786,49 @@ static int unixAccess( int flags, /* What do we want to learn about the zPath file? */ int *pResOut /* Write result boolean here */ ){ - int amode = 0; UNUSED_PARAMETER(NotUsed); SimulateIOError( return SQLITE_IOERR_ACCESS; ); - switch( flags ){ - case SQLITE_ACCESS_EXISTS: - amode = F_OK; - break; - case SQLITE_ACCESS_READWRITE: - amode = W_OK|R_OK; - break; - case SQLITE_ACCESS_READ: - amode = R_OK; - break; + assert( pResOut!=0 ); - default: - assert(!"Invalid flags argument"); - } - *pResOut = (osAccess(zPath, amode)==0); - if( flags==SQLITE_ACCESS_EXISTS && *pResOut ){ + /* The spec says there are three possible values for flags. But only + ** two of them are actually used */ + assert( flags==SQLITE_ACCESS_EXISTS || flags==SQLITE_ACCESS_READWRITE ); + + if( flags==SQLITE_ACCESS_EXISTS ){ struct stat buf; - if( 0==osStat(zPath, &buf) && buf.st_size==0 ){ - *pResOut = 0; - } + *pResOut = (0==osStat(zPath, &buf) && buf.st_size>0); + }else{ + *pResOut = osAccess(zPath, W_OK|R_OK)==0; } return SQLITE_OK; } +/* +** +*/ +static int mkFullPathname( + const char *zPath, /* Input path */ + char *zOut, /* Output buffer */ + int nOut /* Allocated size of buffer zOut */ +){ + int nPath = sqlite3Strlen30(zPath); + int iOff = 0; + if( zPath[0]!='/' ){ + if( osGetcwd(zOut, nOut-2)==0 ){ + return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath); + } + iOff = sqlite3Strlen30(zOut); + zOut[iOff++] = '/'; + } + if( (iOff+nPath+1)>nOut ){ + /* SQLite assumes that xFullPathname() nul-terminates the output buffer + ** even if it returns an error. */ + zOut[iOff] = '\0'; + return SQLITE_CANTOPEN_BKPT; + } + sqlite3_snprintf(nOut-iOff, &zOut[iOff], "%s", zPath); + return SQLITE_OK; +} /* ** Turn a relative pathname into a full pathname. The relative path @@ -29542,6 +35845,17 @@ static int unixFullPathname( int nOut, /* Size of output buffer in bytes */ char *zOut /* Output buffer */ ){ +#if !defined(HAVE_READLINK) || !defined(HAVE_LSTAT) + return mkFullPathname(zPath, zOut, nOut); +#else + int rc = SQLITE_OK; + int nByte; + int nLink = 1; /* Number of symbolic links followed so far */ + const char *zIn = zPath; /* Input path for each iteration of loop */ + char *zDel = 0; + + assert( pVfs->mxPathname==MAX_PATHNAME ); + UNUSED_PARAMETER(pVfs); /* It's odd to simulate an io-error here, but really this is just ** using the io-error infrastructure to test that SQLite handles this @@ -29550,21 +35864,62 @@ static int unixFullPathname( */ SimulateIOError( return SQLITE_ERROR ); - assert( pVfs->mxPathname==MAX_PATHNAME ); - UNUSED_PARAMETER(pVfs); + do { - zOut[nOut-1] = '\0'; - if( zPath[0]=='/' ){ - sqlite3_snprintf(nOut, zOut, "%s", zPath); - }else{ - int nCwd; - if( osGetcwd(zOut, nOut-1)==0 ){ - return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath); + /* Call stat() on path zIn. Set bLink to true if the path is a symbolic + ** link, or false otherwise. */ + int bLink = 0; + struct stat buf; + if( osLstat(zIn, &buf)!=0 ){ + if( errno!=ENOENT ){ + rc = unixLogError(SQLITE_CANTOPEN_BKPT, "lstat", zIn); + } + }else{ + bLink = S_ISLNK(buf.st_mode); } - nCwd = (int)strlen(zOut); - sqlite3_snprintf(nOut-nCwd, &zOut[nCwd], "/%s", zPath); - } - return SQLITE_OK; + + if( bLink ){ + if( zDel==0 ){ + zDel = sqlite3_malloc(nOut); + if( zDel==0 ) rc = SQLITE_NOMEM_BKPT; + }else if( ++nLink>SQLITE_MAX_SYMLINKS ){ + rc = SQLITE_CANTOPEN_BKPT; + } + + if( rc==SQLITE_OK ){ + nByte = osReadlink(zIn, zDel, nOut-1); + if( nByte<0 ){ + rc = unixLogError(SQLITE_CANTOPEN_BKPT, "readlink", zIn); + }else{ + if( zDel[0]!='/' ){ + int n; + for(n = sqlite3Strlen30(zIn); n>0 && zIn[n-1]!='/'; n--); + if( nByte+n+1>nOut ){ + rc = SQLITE_CANTOPEN_BKPT; + }else{ + memmove(&zDel[n], zDel, nByte+1); + memcpy(zDel, zIn, n); + nByte += n; + } + } + zDel[nByte] = '\0'; + } + } + + zIn = zDel; + } + + assert( rc!=SQLITE_OK || zIn!=zOut || zIn[0]=='/' ); + if( rc==SQLITE_OK && zIn!=zOut ){ + rc = mkFullPathname(zIn, zOut, nOut); + } + if( bLink==0 ) break; + zIn = zOut; + }while( rc==SQLITE_OK ); + + sqlite3_free(zDel); + return rc; +#endif /* HAVE_READLINK && HAVE_LSTAT */ } @@ -29650,8 +36005,8 @@ static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){ ** tests repeatable. */ memset(zBuf, 0, nBuf); - randomnessPid = getpid(); -#if !defined(SQLITE_TEST) + randomnessPid = osGetpid(0); +#if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) { int fd, got; fd = robust_open("/dev/urandom", O_RDONLY, 0); @@ -29733,11 +36088,8 @@ static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){ *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_nsec/1000000; #else struct timeval sNow; - if( gettimeofday(&sNow, 0)==0 ){ - *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000; - }else{ - rc = SQLITE_ERROR; - } + (void)gettimeofday(&sNow, 0); /* Cannot fail given valid arguments */ + *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000; #endif #ifdef SQLITE_TEST @@ -29749,6 +36101,7 @@ static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){ return rc; } +#ifndef SQLITE_OMIT_DEPRECATED /* ** Find the current time (in Universal Coordinated Time). Write the ** current time and date as a Julian Day number into *prNow and @@ -29762,19 +36115,21 @@ static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){ *prNow = i/86400000.0; return rc; } +#else +# define unixCurrentTime 0 +#endif /* -** We added the xGetLastError() method with the intention of providing -** better low-level error messages when operating-system problems come up -** during SQLite operation. But so far, none of that has been implemented -** in the core. So this routine is never called. For now, it is merely -** a place-holder. +** The xGetLastError() method is designed to return a better +** low-level error message when operating-system problems come up +** during SQLite operation. Only the integer return code is currently +** used. */ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ UNUSED_PARAMETER(NotUsed); UNUSED_PARAMETER(NotUsed2); UNUSED_PARAMETER(NotUsed3); - return 0; + return errno; } @@ -29832,9 +36187,10 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** ** C APIs ** -** sqlite3_file_control(db, dbname, SQLITE_SET_LOCKPROXYFILE, +** sqlite3_file_control(db, dbname, SQLITE_FCNTL_SET_LOCKPROXYFILE, ** | ":auto:"); -** sqlite3_file_control(db, dbname, SQLITE_GET_LOCKPROXYFILE, &); +** sqlite3_file_control(db, dbname, SQLITE_FCNTL_GET_LOCKPROXYFILE, +** &); ** ** ** SQL pragmas @@ -29875,7 +36231,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** proxy path against the values stored in the conch. The conch file is ** stored in the same directory as the database file and the file name ** is patterned after the database file name as ".-conch". -** If the conch file does not exist, or it's contents do not match the +** If the conch file does not exist, or its contents do not match the ** host ID and/or proxy path, then the lock is escalated to an exclusive ** lock and the conch file contents is updated with the host ID and proxy ** path and the lock is downgraded to a shared lock again. If the conch @@ -29927,7 +36283,7 @@ static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ ** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will ** force proxy locking to be used for every database file opened, and 0 ** will force automatic proxy locking to be disabled for all database -** files (explicity calling the SQLITE_SET_LOCKPROXYFILE pragma or +** files (explicitly calling the SQLITE_FCNTL_SET_LOCKPROXYFILE pragma or ** sqlite_file_control API is not affected by SQLITE_FORCE_PROXY_LOCKING). */ @@ -29948,6 +36304,7 @@ struct proxyLockingContext { char *lockProxyPath; /* Name of the proxy lock file */ char *dbPath; /* Name of the open file */ int conchHeld; /* 1 if the conch is held, -1 if lockless */ + int nFails; /* Number of conch taking failures */ void *oldLockingContext; /* Original lockingcontext to restore on close */ sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */ }; @@ -29969,7 +36326,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ { if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){ OSTRACE(("GETLOCKPATH failed %s errno=%d pid=%d\n", - lPath, errno, getpid())); + lPath, errno, osGetpid(0))); return SQLITE_IOERR_LOCK; } len = strlcat(lPath, "sqliteplocks", maxLen); @@ -29991,7 +36348,7 @@ static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ } lPath[i+len]='\0'; strlcat(lPath, ":auto:", maxLen); - OSTRACE(("GETLOCKPATH proxy lock path=%s pid=%d\n", lPath, getpid())); + OSTRACE(("GETLOCKPATH proxy lock path=%s pid=%d\n", lPath, osGetpid(0))); return SQLITE_OK; } @@ -30018,7 +36375,7 @@ static int proxyCreateLockPath(const char *lockPath){ if( err!=EEXIST ) { OSTRACE(("CREATELOCKPATH FAILED creating %s, " "'%s' proxy lock path=%s pid=%d\n", - buf, strerror(err), lockPath, getpid())); + buf, strerror(err), lockPath, osGetpid(0))); return err; } } @@ -30027,7 +36384,7 @@ static int proxyCreateLockPath(const char *lockPath){ } buf[i] = lockPath[i]; } - OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n", lockPath, getpid())); + OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n",lockPath,osGetpid(0))); return 0; } @@ -30061,9 +36418,9 @@ static int proxyCreateUnixFile( if( pUnused ){ fd = pUnused->fd; }else{ - pUnused = sqlite3_malloc(sizeof(*pUnused)); + pUnused = sqlite3_malloc64(sizeof(*pUnused)); if( !pUnused ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } } if( fd<0 ){ @@ -30094,9 +36451,9 @@ static int proxyCreateUnixFile( } } - pNew = (unixFile *)sqlite3_malloc(sizeof(*pNew)); + pNew = (unixFile *)sqlite3_malloc64(sizeof(*pNew)); if( pNew==NULL ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto end_create_proxy; } memset(pNew, 0, sizeof(unixFile)); @@ -30127,8 +36484,10 @@ SQLITE_API int sqlite3_hostid_num = 0; #define PROXY_HOSTIDLEN 16 /* conch file host id length */ +#ifdef HAVE_GETHOSTUUID /* Not always defined in the headers as it ought to be */ extern int gethostuuid(uuid_t id, const struct timespec *wait); +#endif /* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN ** bytes of writable memory. @@ -30136,10 +36495,9 @@ extern int gethostuuid(uuid_t id, const struct timespec *wait); static int proxyGetHostID(unsigned char *pHostID, int *pError){ assert(PROXY_HOSTIDLEN == sizeof(uuid_t)); memset(pHostID, 0, PROXY_HOSTIDLEN); -#if defined(__MAX_OS_X_VERSION_MIN_REQUIRED)\ - && __MAC_OS_X_VERSION_MIN_REQUIRED<1050 +#ifdef HAVE_GETHOSTUUID { - static const struct timespec timeout = {1, 0}; /* 1 sec timeout */ + struct timespec timeout = {1, 0}; /* 1 sec timeout */ if( gethostuuid(pHostID, &timeout) ){ int err = errno; if( pError ){ @@ -30254,7 +36612,7 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ */ struct stat buf; if( osFstat(conchFile->h, &buf) ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return SQLITE_IOERR_LOCK; } @@ -30274,7 +36632,7 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ char tBuf[PROXY_MAXCONCHLEN]; int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0); if( len<0 ){ - pFile->lastErrno = errno; + storeLastErrno(pFile, errno); return SQLITE_IOERR_LOCK; } if( len>PROXY_PATHINDEX && tBuf[0]==(char)PROXY_CONCHVERSION){ @@ -30294,7 +36652,7 @@ static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ if( 0==proxyBreakConchLock(pFile, myHostID) ){ rc = SQLITE_OK; if( lockType==EXCLUSIVE_LOCK ){ - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK); + rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK); } if( !rc ){ rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); @@ -30332,11 +36690,12 @@ static int proxyTakeConch(unixFile *pFile){ int forceNewLockPath = 0; OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h, - (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), getpid())); + (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), + osGetpid(0))); rc = proxyGetHostID(myHostID, &pError); if( (rc&0xff)==SQLITE_IOERR ){ - pFile->lastErrno = pError; + storeLastErrno(pFile, pError); goto end_takeconch; } rc = proxyConchLock(pFile, myHostID, SHARED_LOCK); @@ -30347,7 +36706,7 @@ static int proxyTakeConch(unixFile *pFile){ readLen = seekAndRead((unixFile*)conchFile, 0, readBuf, PROXY_MAXCONCHLEN); if( readLen<0 ){ /* I/O error: lastErrno set by seekAndRead */ - pFile->lastErrno = conchFile->lastErrno; + storeLastErrno(pFile, conchFile->lastErrno); rc = SQLITE_IOERR_READ; goto end_takeconch; }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) || @@ -30420,7 +36779,7 @@ static int proxyTakeConch(unixFile *pFile){ rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); } }else{ - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, EXCLUSIVE_LOCK); + rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); } if( rc==SQLITE_OK ){ char writeBuffer[PROXY_MAXCONCHLEN]; @@ -30429,14 +36788,15 @@ static int proxyTakeConch(unixFile *pFile){ writeBuffer[0] = (char)PROXY_CONCHVERSION; memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN); if( pCtx->lockProxyPath!=NULL ){ - strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath, MAXPATHLEN); + strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath, + MAXPATHLEN); }else{ strlcpy(&writeBuffer[PROXY_PATHINDEX], tempLockPath, MAXPATHLEN); } writeSize = PROXY_PATHINDEX + strlen(&writeBuffer[PROXY_PATHINDEX]); robust_ftruncate(conchFile->h, writeSize); rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0); - fsync(conchFile->h); + full_fsync(conchFile->h,0,0); /* If we created a new conch file (not just updated the contents of a ** valid conch file), try to match the permissions of the database */ @@ -30506,7 +36866,7 @@ static int proxyTakeConch(unixFile *pFile){ if( tempLockPath ){ pCtx->lockProxyPath = sqlite3DbStrDup(0, tempLockPath); if( !pCtx->lockProxyPath ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } } } @@ -30541,7 +36901,7 @@ static int proxyReleaseConch(unixFile *pFile){ conchFile = pCtx->conchFile; OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h, (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), - getpid())); + osGetpid(0))); if( pCtx->conchHeld>0 ){ rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); } @@ -30553,7 +36913,7 @@ static int proxyReleaseConch(unixFile *pFile){ /* ** Given the name of a database file, compute the name of its conch file. -** Store the conch filename in memory obtained from sqlite3_malloc(). +** Store the conch filename in memory obtained from sqlite3_malloc64(). ** Make *pConchPath point to the new name. Return SQLITE_OK on success ** or SQLITE_NOMEM if unable to obtain memory. ** @@ -30569,9 +36929,9 @@ static int proxyCreateConchPathname(char *dbPath, char **pConchPath){ /* Allocate space for the conch filename and initialize the name to ** the name of the original database file. */ - *pConchPath = conchPath = (char *)sqlite3_malloc(len + 8); + *pConchPath = conchPath = (char *)sqlite3_malloc64(len + 8); if( conchPath==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memcpy(conchPath, dbPath, len+1); @@ -30641,7 +37001,8 @@ static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){ /* afp style keeps a reference to the db path in the filePath field ** of the struct */ assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); - strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, MAXPATHLEN); + strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, + MAXPATHLEN); } else #endif if( pFile->pMethod == &dotlockIoMethods ){ @@ -30682,11 +37043,11 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { } OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h, - (lockPath ? lockPath : ":auto:"), getpid())); + (lockPath ? lockPath : ":auto:"), osGetpid(0))); - pCtx = sqlite3_malloc( sizeof(*pCtx) ); + pCtx = sqlite3_malloc64( sizeof(*pCtx) ); if( pCtx==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memset(pCtx, 0, sizeof(*pCtx)); @@ -30722,7 +37083,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { if( rc==SQLITE_OK ){ pCtx->dbPath = sqlite3DbStrDup(0, dbPath); if( pCtx->dbPath==NULL ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } } if( rc==SQLITE_OK ){ @@ -30754,7 +37115,7 @@ static int proxyTransformUnixFile(unixFile *pFile, const char *path) { */ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ switch( op ){ - case SQLITE_GET_LOCKPROXYFILE: { + case SQLITE_FCNTL_GET_LOCKPROXYFILE: { unixFile *pFile = (unixFile*)id; if( pFile->pMethod == &proxyIoMethods ){ proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; @@ -30769,13 +37130,16 @@ static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ } return SQLITE_OK; } - case SQLITE_SET_LOCKPROXYFILE: { + case SQLITE_FCNTL_SET_LOCKPROXYFILE: { unixFile *pFile = (unixFile*)id; int rc = SQLITE_OK; int isProxyStyle = (pFile->pMethod == &proxyIoMethods); if( pArg==NULL || (const char *)pArg==0 ){ if( isProxyStyle ){ - /* turn off proxy locking - not supported */ + /* turn off proxy locking - not supported. If support is added for + ** switching proxy locking mode off then it will need to fail if + ** the journal mode is WAL mode. + */ rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/; }else{ /* turn off proxy locking - already off - NOOP */ @@ -30905,7 +37269,7 @@ static int proxyUnlock(sqlite3_file *id, int eFileLock) { ** Close a file that uses proxy locks. */ static int proxyClose(sqlite3_file *id) { - if( id ){ + if( ALWAYS(id) ){ unixFile *pFile = (unixFile*)id; proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; unixFile *lockProxy = pCtx->lockProxy; @@ -31020,8 +37384,10 @@ SQLITE_API int sqlite3_os_init(void){ ** array cannot be const. */ static sqlite3_vfs aVfs[] = { -#if SQLITE_ENABLE_LOCKING_STYLE && (OS_VXWORKS || defined(__APPLE__)) +#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) UNIXVFS("unix", autolockIoFinder ), +#elif OS_VXWORKS + UNIXVFS("unix", vxworksIoFinder ), #else UNIXVFS("unix", posixIoFinder ), #endif @@ -31031,11 +37397,11 @@ SQLITE_API int sqlite3_os_init(void){ #if OS_VXWORKS UNIXVFS("unix-namedsem", semIoFinder ), #endif -#if SQLITE_ENABLE_LOCKING_STYLE +#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS UNIXVFS("unix-posix", posixIoFinder ), -#if !OS_VXWORKS - UNIXVFS("unix-flock", flockIoFinder ), #endif +#if SQLITE_ENABLE_LOCKING_STYLE + UNIXVFS("unix-flock", flockIoFinder ), #endif #if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) UNIXVFS("unix-afp", afpIoFinder ), @@ -31047,7 +37413,7 @@ SQLITE_API int sqlite3_os_init(void){ /* Double-check that the aSyscall[] array has been constructed ** correctly. See ticket [bb3a86e890c8e96ab] */ - assert( ArraySize(aSyscall)==24 ); + assert( ArraySize(aSyscall)==28 ); /* Register all VFSes defined in the aVfs[] array */ for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){ @@ -31085,13 +37451,9 @@ SQLITE_API int sqlite3_os_end(void){ ** ** This file contains code that is specific to Windows. */ +/* #include "sqliteInt.h" */ #if SQLITE_OS_WIN /* This file is used for Windows only */ -#ifdef __CYGWIN__ -# include -# include /* amalgamator: keep */ -#endif - /* ** Include code that is common to all os_*.c files */ @@ -31128,24 +37490,14 @@ SQLITE_API int sqlite3_os_end(void){ # error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." #endif -#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) -# ifndef SQLITE_DEBUG_OS_TRACE -# define SQLITE_DEBUG_OS_TRACE 0 -# endif - int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE; -# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X -#else -# define OSTRACE(X) -#endif - /* ** Macros for performance tracing. Normally turned off. Only works ** on i486 hardware. */ #ifdef SQLITE_PERFORMANCE_TRACE -/* -** hwtime.h contains inline assembler code for implementing +/* +** hwtime.h contains inline assembler code for implementing ** high-performance timing routines. */ /************** Include hwtime.h in the middle of os_common.h ****************/ @@ -31165,8 +37517,8 @@ SQLITE_API int sqlite3_os_end(void){ ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. */ -#ifndef _HWTIME_H_ -#define _HWTIME_H_ +#ifndef SQLITE_HWTIME_H +#define SQLITE_HWTIME_H /* ** The following routine only works on pentium-class (or newer) processors. @@ -31234,7 +37586,7 @@ SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } #endif -#endif /* !defined(_HWTIME_H_) */ +#endif /* !defined(SQLITE_HWTIME_H) */ /************** End of hwtime.h **********************************************/ /************** Continuing where we left off in os_common.h ******************/ @@ -31255,14 +37607,14 @@ static sqlite_uint64 g_elapsed; ** of code will give us the ability to simulate a disk I/O error. This ** is used for testing the I/O recovery logic. */ -#ifdef SQLITE_TEST -SQLITE_API int sqlite3_io_error_hit = 0; /* Total number of I/O Errors */ -SQLITE_API int sqlite3_io_error_hardhit = 0; /* Number of non-benign errors */ -SQLITE_API int sqlite3_io_error_pending = 0; /* Count down to first I/O error */ -SQLITE_API int sqlite3_io_error_persist = 0; /* True if I/O errors persist */ -SQLITE_API int sqlite3_io_error_benign = 0; /* True if errors are benign */ -SQLITE_API int sqlite3_diskfull_pending = 0; -SQLITE_API int sqlite3_diskfull = 0; +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_io_error_hit; +SQLITE_API extern int sqlite3_io_error_hardhit; +SQLITE_API extern int sqlite3_io_error_pending; +SQLITE_API extern int sqlite3_io_error_persist; +SQLITE_API extern int sqlite3_io_error_benign; +SQLITE_API extern int sqlite3_diskfull_pending; +SQLITE_API extern int sqlite3_diskfull; #define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) #define SimulateIOError(CODE) \ if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ @@ -31288,23 +37640,28 @@ static void local_ioerr(){ #define SimulateIOErrorBenign(X) #define SimulateIOError(A) #define SimulateDiskfullError(A) -#endif +#endif /* defined(SQLITE_TEST) */ /* ** When testing, keep a count of the number of open files. */ -#ifdef SQLITE_TEST -SQLITE_API int sqlite3_open_file_count = 0; +#if defined(SQLITE_TEST) +SQLITE_API extern int sqlite3_open_file_count; #define OpenCounter(X) sqlite3_open_file_count+=(X) #else #define OpenCounter(X) -#endif +#endif /* defined(SQLITE_TEST) */ #endif /* !defined(_OS_COMMON_H_) */ /************** End of os_common.h *******************************************/ /************** Continuing where we left off in os_win.c *********************/ +/* +** Include the header file for the Windows VFS. +*/ +/* #include "os_win.h" */ + /* ** Compiling and using WAL mode requires several APIs that are only ** available in Windows platforms based on the NT kernel. @@ -31314,6 +37671,11 @@ SQLITE_API int sqlite3_open_file_count = 0; with SQLITE_OMIT_WAL." #endif +#if !SQLITE_OS_WINNT && SQLITE_MAX_MMAP_SIZE>0 +# error "Memory mapped files require support from the Windows NT kernel,\ + compile with SQLITE_MAX_MMAP_SIZE=0." +#endif + /* ** Are most of the Win32 ANSI APIs available (i.e. with certain exceptions ** based on the sub-platform)? @@ -31351,19 +37713,32 @@ SQLITE_API int sqlite3_open_file_count = 0; # define NTDDI_WINBLUE 0x06030000 #endif +#ifndef NTDDI_WINTHRESHOLD +# define NTDDI_WINTHRESHOLD 0x06040000 +#endif + /* -** Check if the GetVersionEx[AW] functions should be considered deprecated -** and avoid using them in that case. It should be noted here that if the -** value of the SQLITE_WIN32_GETVERSIONEX pre-processor macro is zero -** (whether via this block or via being manually specified), that implies -** the underlying operating system will always be based on the Windows NT -** Kernel. +** Check to see if the GetVersionEx[AW] functions are deprecated on the +** target system. GetVersionEx was first deprecated in Win8.1. */ #ifndef SQLITE_WIN32_GETVERSIONEX # if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINBLUE -# define SQLITE_WIN32_GETVERSIONEX 0 +# define SQLITE_WIN32_GETVERSIONEX 0 /* GetVersionEx() is deprecated */ # else -# define SQLITE_WIN32_GETVERSIONEX 1 +# define SQLITE_WIN32_GETVERSIONEX 1 /* GetVersionEx() is current */ +# endif +#endif + +/* +** Check to see if the CreateFileMappingA function is supported on the +** target system. It is unavailable when using "mincore.lib" on Win10. +** When compiling for Windows 10, always assume "mincore.lib" is in use. +*/ +#ifndef SQLITE_WIN32_CREATEFILEMAPPINGA +# if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINTHRESHOLD +# define SQLITE_WIN32_CREATEFILEMAPPINGA 0 +# else +# define SQLITE_WIN32_CREATEFILEMAPPINGA 1 # endif #endif @@ -31435,7 +37810,7 @@ SQLITE_API int sqlite3_open_file_count = 0; ** [sometimes] not used by the code (e.g. via conditional compilation). */ #ifndef UNUSED_VARIABLE_VALUE -# define UNUSED_VARIABLE_VALUE(x) (void)(x) +# define UNUSED_VARIABLE_VALUE(x) (void)(x) #endif /* @@ -31447,10 +37822,11 @@ SQLITE_API int sqlite3_open_file_count = 0; /* ** Do we need to manually define the Win32 file mapping APIs for use with WAL -** mode (e.g. these APIs are available in the Windows CE SDK; however, they -** are not present in the header file)? +** mode or memory mapped files (e.g. these APIs are available in the Windows +** CE SDK; however, they are not present in the header file)? */ -#if SQLITE_WIN32_FILEMAPPING_API && !defined(SQLITE_OMIT_WAL) +#if SQLITE_WIN32_FILEMAPPING_API && \ + (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) /* ** Two of the file mapping APIs are different under WinRT. Figure out which ** set we need. @@ -31475,16 +37851,18 @@ WINBASEAPI LPVOID WINAPI MapViewOfFile(HANDLE, DWORD, DWORD, DWORD, SIZE_T); #endif /* SQLITE_OS_WINRT */ /* -** This file mapping API is common to both Win32 and WinRT. +** These file mapping APIs are common to both Win32 and WinRT. */ + +WINBASEAPI BOOL WINAPI FlushViewOfFile(LPCVOID, SIZE_T); WINBASEAPI BOOL WINAPI UnmapViewOfFile(LPCVOID); -#endif /* SQLITE_WIN32_FILEMAPPING_API && !defined(SQLITE_OMIT_WAL) */ +#endif /* SQLITE_WIN32_FILEMAPPING_API */ /* ** Some Microsoft compilers lack this definition. */ #ifndef INVALID_FILE_ATTRIBUTES -# define INVALID_FILE_ATTRIBUTES ((DWORD)-1) +# define INVALID_FILE_ATTRIBUTES ((DWORD)-1) #endif #ifndef FILE_FLAG_MASK @@ -31534,7 +37912,7 @@ struct winFile { int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */ #if SQLITE_OS_WINCE LPWSTR zDeleteOnClose; /* Name of file to delete when closing */ - HANDLE hMutex; /* Mutex used to control access to shared lock */ + HANDLE hMutex; /* Mutex used to control access to shared lock */ HANDLE hShared; /* Shared memory segment used for locking */ winceLock local; /* Locks obtained by this instance of winFile */ winceLock *shared; /* Global shared lock memory for the file */ @@ -31549,6 +37927,17 @@ struct winFile { #endif }; +/* +** The winVfsAppData structure is used for the pAppData member for all of the +** Win32 VFS variants. +*/ +typedef struct winVfsAppData winVfsAppData; +struct winVfsAppData { + const sqlite3_io_methods *pMethod; /* The file I/O methods to use. */ + void *pAppData; /* The extra pAppData, if any. */ + BOOL bNoLock; /* Non-zero if locking is disabled. */ +}; + /* ** Allowed values for winFile.ctrlFlags */ @@ -31603,11 +37992,23 @@ struct winFile { # define SQLITE_WIN32_HEAP_CREATE (TRUE) #endif +/* + * This is cache size used in the calculation of the initial size of the + * Win32-specific heap. It cannot be negative. + */ +#ifndef SQLITE_WIN32_CACHE_SIZE +# if SQLITE_DEFAULT_CACHE_SIZE>=0 +# define SQLITE_WIN32_CACHE_SIZE (SQLITE_DEFAULT_CACHE_SIZE) +# else +# define SQLITE_WIN32_CACHE_SIZE (-(SQLITE_DEFAULT_CACHE_SIZE)) +# endif +#endif + /* * The initial size of the Win32-specific heap. This value may be zero. */ #ifndef SQLITE_WIN32_HEAP_INIT_SIZE -# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \ +# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_WIN32_CACHE_SIZE) * \ (SQLITE_DEFAULT_PAGE_SIZE) + 4194304) #endif @@ -31694,10 +38095,9 @@ SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetWin32(void); ** can manually set this value to 1 to emulate Win98 behavior. */ #ifdef SQLITE_TEST -SQLITE_API int sqlite3_os_type = 0; -#elif !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && \ - defined(SQLITE_WIN32_HAS_ANSI) && defined(SQLITE_WIN32_HAS_WIDE) -static int sqlite3_os_type = 0; +SQLITE_API LONG SQLITE_WIN32_VOLATILE sqlite3_os_type = 0; +#else +static LONG SQLITE_WIN32_VOLATILE sqlite3_os_type = 0; #endif #ifndef SYSCALL @@ -31771,8 +38171,9 @@ static struct win_syscall { #define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \ LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent) -#if (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \ - !defined(SQLITE_OMIT_WAL)) +#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \ + (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) && \ + SQLITE_WIN32_CREATEFILEMAPPINGA { "CreateFileMappingA", (SYSCALL)CreateFileMappingA, 0 }, #else { "CreateFileMappingA", (SYSCALL)0, 0 }, @@ -31782,7 +38183,7 @@ static struct win_syscall { DWORD,DWORD,DWORD,LPCSTR))aSyscall[6].pCurrent) #if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \ - !defined(SQLITE_OMIT_WAL)) + (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)) { "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 }, #else { "CreateFileMappingW", (SYSCALL)0, 0 }, @@ -32002,8 +38403,7 @@ static struct win_syscall { #define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent) -#if defined(SQLITE_WIN32_HAS_ANSI) && defined(SQLITE_WIN32_GETVERSIONEX) && \ - SQLITE_WIN32_GETVERSIONEX +#if defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_GETVERSIONEX { "GetVersionExA", (SYSCALL)GetVersionExA, 0 }, #else { "GetVersionExA", (SYSCALL)0, 0 }, @@ -32013,7 +38413,7 @@ static struct win_syscall { LPOSVERSIONINFOA))aSyscall[34].pCurrent) #if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \ - defined(SQLITE_WIN32_GETVERSIONEX) && SQLITE_WIN32_GETVERSIONEX + SQLITE_WIN32_GETVERSIONEX { "GetVersionExW", (SYSCALL)GetVersionExW, 0 }, #else { "GetVersionExW", (SYSCALL)0, 0 }, @@ -32122,7 +38522,8 @@ static struct win_syscall { LPOVERLAPPED))aSyscall[48].pCurrent) #endif -#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL)) +#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && \ + (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)) { "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 }, #else { "MapViewOfFile", (SYSCALL)0, 0 }, @@ -32192,7 +38593,7 @@ static struct win_syscall { #define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \ LPOVERLAPPED))aSyscall[58].pCurrent) -#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL) +#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 { "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 }, #else { "UnmapViewOfFile", (SYSCALL)0, 0 }, @@ -32228,7 +38629,7 @@ static struct win_syscall { #define osWaitForSingleObject ((DWORD(WINAPI*)(HANDLE, \ DWORD))aSyscall[63].pCurrent) -#if SQLITE_OS_WINRT +#if !SQLITE_OS_WINCE { "WaitForSingleObjectEx", (SYSCALL)WaitForSingleObjectEx, 0 }, #else { "WaitForSingleObjectEx", (SYSCALL)0, 0 }, @@ -32255,7 +38656,7 @@ static struct win_syscall { #define osGetFileInformationByHandleEx ((BOOL(WINAPI*)(HANDLE, \ FILE_INFO_BY_HANDLE_CLASS,LPVOID,DWORD))aSyscall[66].pCurrent) -#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL) +#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) { "MapViewOfFileFromApp", (SYSCALL)MapViewOfFileFromApp, 0 }, #else { "MapViewOfFileFromApp", (SYSCALL)0, 0 }, @@ -32319,7 +38720,7 @@ static struct win_syscall { #define osGetProcessHeap ((HANDLE(WINAPI*)(VOID))aSyscall[74].pCurrent) -#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_WAL) +#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) { "CreateFileMappingFromApp", (SYSCALL)CreateFileMappingFromApp, 0 }, #else { "CreateFileMappingFromApp", (SYSCALL)0, 0 }, @@ -32328,6 +38729,48 @@ static struct win_syscall { #define osCreateFileMappingFromApp ((HANDLE(WINAPI*)(HANDLE, \ LPSECURITY_ATTRIBUTES,ULONG,ULONG64,LPCWSTR))aSyscall[75].pCurrent) +/* +** NOTE: On some sub-platforms, the InterlockedCompareExchange "function" +** is really just a macro that uses a compiler intrinsic (e.g. x64). +** So do not try to make this is into a redefinable interface. +*/ +#if defined(InterlockedCompareExchange) + { "InterlockedCompareExchange", (SYSCALL)0, 0 }, + +#define osInterlockedCompareExchange InterlockedCompareExchange +#else + { "InterlockedCompareExchange", (SYSCALL)InterlockedCompareExchange, 0 }, + +#define osInterlockedCompareExchange ((LONG(WINAPI*)(LONG \ + SQLITE_WIN32_VOLATILE*, LONG,LONG))aSyscall[76].pCurrent) +#endif /* defined(InterlockedCompareExchange) */ + +#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID + { "UuidCreate", (SYSCALL)UuidCreate, 0 }, +#else + { "UuidCreate", (SYSCALL)0, 0 }, +#endif + +#define osUuidCreate ((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[77].pCurrent) + +#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID + { "UuidCreateSequential", (SYSCALL)UuidCreateSequential, 0 }, +#else + { "UuidCreateSequential", (SYSCALL)0, 0 }, +#endif + +#define osUuidCreateSequential \ + ((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[78].pCurrent) + +#if !defined(SQLITE_NO_SYNC) && SQLITE_MAX_MMAP_SIZE>0 + { "FlushViewOfFile", (SYSCALL)FlushViewOfFile, 0 }, +#else + { "FlushViewOfFile", (SYSCALL)0, 0 }, +#endif + +#define osFlushViewOfFile \ + ((BOOL(WINAPI*)(LPCVOID,SIZE_T))aSyscall[79].pCurrent) + }; /* End of the overrideable system calls */ /* @@ -32439,7 +38882,7 @@ SQLITE_API int sqlite3_win32_compact_heap(LPUINT pnLargest){ if( lastErrno==NO_ERROR ){ sqlite3_log(SQLITE_NOMEM, "failed to HeapCompact (no space), heap=%p", (void*)hHeap); - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ sqlite3_log(SQLITE_ERROR, "failed to HeapCompact (%lu), heap=%p", osGetLastError(), (void*)hHeap); @@ -32511,6 +38954,12 @@ SQLITE_API void sqlite3_win32_write_debug(const char *zBuf, int nBuf){ int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */ if( nMin<-1 ) nMin = -1; /* all negative values become -1. */ assert( nMin==-1 || nMin==0 || nMin0 ){ memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE); @@ -32559,6 +39008,16 @@ SQLITE_API void sqlite3_win32_sleep(DWORD milliseconds){ #endif } +#if SQLITE_MAX_WORKER_THREADS>0 && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && \ + SQLITE_THREADSAFE>0 +SQLITE_PRIVATE DWORD sqlite3Win32Wait(HANDLE hObject){ + DWORD rc; + while( (rc = osWaitForSingleObjectEx(hObject, INFINITE, + TRUE))==WAIT_IO_COMPLETION ){} + return rc; +} +#endif + /* ** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, ** or WinCE. Return false (zero) for Win95, Win98, or WinME. @@ -32571,29 +39030,54 @@ SQLITE_API void sqlite3_win32_sleep(DWORD milliseconds){ ** the LockFileEx() API. */ -#if !defined(SQLITE_WIN32_GETVERSIONEX) || !SQLITE_WIN32_GETVERSIONEX +#if !SQLITE_WIN32_GETVERSIONEX # define osIsNT() (1) #elif SQLITE_OS_WINCE || SQLITE_OS_WINRT || !defined(SQLITE_WIN32_HAS_ANSI) # define osIsNT() (1) #elif !defined(SQLITE_WIN32_HAS_WIDE) # define osIsNT() (0) #else - static int osIsNT(void){ - if( sqlite3_os_type==0 ){ -#if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WIN8 - OSVERSIONINFOW sInfo; - sInfo.dwOSVersionInfoSize = sizeof(sInfo); - osGetVersionExW(&sInfo); -#else - OSVERSIONINFOA sInfo; - sInfo.dwOSVersionInfoSize = sizeof(sInfo); - osGetVersionExA(&sInfo); +# define osIsNT() ((sqlite3_os_type==2) || sqlite3_win32_is_nt()) +#endif + +/* +** This function determines if the machine is running a version of Windows +** based on the NT kernel. +*/ +SQLITE_API int sqlite3_win32_is_nt(void){ +#if SQLITE_OS_WINRT + /* + ** NOTE: The WinRT sub-platform is always assumed to be based on the NT + ** kernel. + */ + return 1; +#elif SQLITE_WIN32_GETVERSIONEX + if( osInterlockedCompareExchange(&sqlite3_os_type, 0, 0)==0 ){ +#if defined(SQLITE_WIN32_HAS_ANSI) + OSVERSIONINFOA sInfo; + sInfo.dwOSVersionInfoSize = sizeof(sInfo); + osGetVersionExA(&sInfo); + osInterlockedCompareExchange(&sqlite3_os_type, + (sInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) ? 2 : 1, 0); +#elif defined(SQLITE_WIN32_HAS_WIDE) + OSVERSIONINFOW sInfo; + sInfo.dwOSVersionInfoSize = sizeof(sInfo); + osGetVersionExW(&sInfo); + osInterlockedCompareExchange(&sqlite3_os_type, + (sInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) ? 2 : 1, 0); #endif - sqlite3_os_type = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1; - } - return sqlite3_os_type==2; } + return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2; +#elif SQLITE_TEST + return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2; +#else + /* + ** NOTE: All sub-platforms where the GetVersionEx[AW] functions are + ** deprecated are always assumed to be based on the NT kernel. + */ + return 1; #endif +} #ifdef SQLITE_WIN32_MALLOC /* @@ -32724,7 +39208,7 @@ static int winMemInit(void *pAppData){ "failed to HeapCreate (%lu), flags=%u, initSize=%lu, maxSize=%lu", osGetLastError(), SQLITE_WIN32_HEAP_FLAGS, dwInitialSize, dwMaximumSize); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pWinMemData->bOwned = TRUE; assert( pWinMemData->bOwned ); @@ -32734,7 +39218,7 @@ static int winMemInit(void *pAppData){ if( !pWinMemData->hHeap ){ sqlite3_log(SQLITE_NOMEM, "failed to GetProcessHeap (%lu)", osGetLastError()); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pWinMemData->bOwned = FALSE; assert( !pWinMemData->bOwned ); @@ -32801,147 +39285,244 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ #endif /* SQLITE_WIN32_MALLOC */ /* -** Convert a UTF-8 string to Microsoft Unicode (UTF-16?). +** Convert a UTF-8 string to Microsoft Unicode. ** -** Space to hold the returned string is obtained from malloc. +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -static LPWSTR winUtf8ToUnicode(const char *zFilename){ +static LPWSTR winUtf8ToUnicode(const char *zText){ int nChar; - LPWSTR zWideFilename; + LPWSTR zWideText; - nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0); + nChar = osMultiByteToWideChar(CP_UTF8, 0, zText, -1, NULL, 0); if( nChar==0 ){ return 0; } - zWideFilename = sqlite3MallocZero( nChar*sizeof(zWideFilename[0]) ); - if( zWideFilename==0 ){ + zWideText = sqlite3MallocZero( nChar*sizeof(WCHAR) ); + if( zWideText==0 ){ return 0; } - nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename, + nChar = osMultiByteToWideChar(CP_UTF8, 0, zText, -1, zWideText, nChar); if( nChar==0 ){ - sqlite3_free(zWideFilename); - zWideFilename = 0; + sqlite3_free(zWideText); + zWideText = 0; } - return zWideFilename; + return zWideText; } /* -** Convert Microsoft Unicode to UTF-8. Space to hold the returned string is -** obtained from sqlite3_malloc(). +** Convert a Microsoft Unicode string to UTF-8. +** +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -static char *winUnicodeToUtf8(LPCWSTR zWideFilename){ +static char *winUnicodeToUtf8(LPCWSTR zWideText){ int nByte; - char *zFilename; + char *zText; - nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0); + nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideText, -1, 0, 0, 0, 0); if( nByte == 0 ){ return 0; } - zFilename = sqlite3MallocZero( nByte ); - if( zFilename==0 ){ + zText = sqlite3MallocZero( nByte ); + if( zText==0 ){ return 0; } - nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte, + nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideText, -1, zText, nByte, 0, 0); if( nByte == 0 ){ - sqlite3_free(zFilename); - zFilename = 0; + sqlite3_free(zText); + zText = 0; } - return zFilename; + return zText; } /* -** Convert an ANSI string to Microsoft Unicode, based on the -** current codepage settings for file apis. -** -** Space to hold the returned string is obtained -** from sqlite3_malloc. +** Convert an ANSI string to Microsoft Unicode, using the ANSI or OEM +** code page. +** +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -static LPWSTR winMbcsToUnicode(const char *zFilename){ +static LPWSTR winMbcsToUnicode(const char *zText, int useAnsi){ int nByte; - LPWSTR zMbcsFilename; - int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP; + LPWSTR zMbcsText; + int codepage = useAnsi ? CP_ACP : CP_OEMCP; - nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, NULL, + nByte = osMultiByteToWideChar(codepage, 0, zText, -1, NULL, 0)*sizeof(WCHAR); if( nByte==0 ){ return 0; } - zMbcsFilename = sqlite3MallocZero( nByte*sizeof(zMbcsFilename[0]) ); - if( zMbcsFilename==0 ){ + zMbcsText = sqlite3MallocZero( nByte*sizeof(WCHAR) ); + if( zMbcsText==0 ){ return 0; } - nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename, + nByte = osMultiByteToWideChar(codepage, 0, zText, -1, zMbcsText, nByte); if( nByte==0 ){ - sqlite3_free(zMbcsFilename); - zMbcsFilename = 0; + sqlite3_free(zMbcsText); + zMbcsText = 0; } - return zMbcsFilename; + return zMbcsText; } /* -** Convert Microsoft Unicode to multi-byte character string, based on the -** user's ANSI codepage. +** Convert a Microsoft Unicode string to a multi-byte character string, +** using the ANSI or OEM code page. ** -** Space to hold the returned string is obtained from -** sqlite3_malloc(). +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -static char *winUnicodeToMbcs(LPCWSTR zWideFilename){ +static char *winUnicodeToMbcs(LPCWSTR zWideText, int useAnsi){ int nByte; - char *zFilename; - int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP; + char *zText; + int codepage = useAnsi ? CP_ACP : CP_OEMCP; - nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0); + nByte = osWideCharToMultiByte(codepage, 0, zWideText, -1, 0, 0, 0, 0); if( nByte == 0 ){ return 0; } - zFilename = sqlite3MallocZero( nByte ); - if( zFilename==0 ){ + zText = sqlite3MallocZero( nByte ); + if( zText==0 ){ return 0; } - nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename, + nByte = osWideCharToMultiByte(codepage, 0, zWideText, -1, zText, nByte, 0, 0); if( nByte == 0 ){ - sqlite3_free(zFilename); - zFilename = 0; + sqlite3_free(zText); + zText = 0; } - return zFilename; + return zText; } /* -** Convert multibyte character string to UTF-8. Space to hold the -** returned string is obtained from sqlite3_malloc(). +** Convert a multi-byte character string to UTF-8. +** +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -SQLITE_API char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){ - char *zFilenameUtf8; +static char *winMbcsToUtf8(const char *zText, int useAnsi){ + char *zTextUtf8; LPWSTR zTmpWide; - zTmpWide = winMbcsToUnicode(zFilename); + zTmpWide = winMbcsToUnicode(zText, useAnsi); if( zTmpWide==0 ){ return 0; } - zFilenameUtf8 = winUnicodeToUtf8(zTmpWide); + zTextUtf8 = winUnicodeToUtf8(zTmpWide); sqlite3_free(zTmpWide); - return zFilenameUtf8; + return zTextUtf8; } /* -** Convert UTF-8 to multibyte character string. Space to hold the -** returned string is obtained from sqlite3_malloc(). +** Convert a UTF-8 string to a multi-byte character string. +** +** Space to hold the returned string is obtained from sqlite3_malloc(). */ -SQLITE_API char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){ - char *zFilenameMbcs; +static char *winUtf8ToMbcs(const char *zText, int useAnsi){ + char *zTextMbcs; LPWSTR zTmpWide; - zTmpWide = winUtf8ToUnicode(zFilename); + zTmpWide = winUtf8ToUnicode(zText); if( zTmpWide==0 ){ return 0; } - zFilenameMbcs = winUnicodeToMbcs(zTmpWide); + zTextMbcs = winUnicodeToMbcs(zTmpWide, useAnsi); sqlite3_free(zTmpWide); - return zFilenameMbcs; + return zTextMbcs; +} + +/* +** This is a public wrapper for the winUtf8ToUnicode() function. +*/ +SQLITE_API LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winUtf8ToUnicode(zText); +} + +/* +** This is a public wrapper for the winUnicodeToUtf8() function. +*/ +SQLITE_API char *sqlite3_win32_unicode_to_utf8(LPCWSTR zWideText){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zWideText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winUnicodeToUtf8(zWideText); +} + +/* +** This is a public wrapper for the winMbcsToUtf8() function. +*/ +SQLITE_API char *sqlite3_win32_mbcs_to_utf8(const char *zText){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winMbcsToUtf8(zText, osAreFileApisANSI()); +} + +/* +** This is a public wrapper for the winMbcsToUtf8() function. +*/ +SQLITE_API char *sqlite3_win32_mbcs_to_utf8_v2(const char *zText, int useAnsi){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winMbcsToUtf8(zText, useAnsi); +} + +/* +** This is a public wrapper for the winUtf8ToMbcs() function. +*/ +SQLITE_API char *sqlite3_win32_utf8_to_mbcs(const char *zText){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winUtf8ToMbcs(zText, osAreFileApisANSI()); +} + +/* +** This is a public wrapper for the winUtf8ToMbcs() function. +*/ +SQLITE_API char *sqlite3_win32_utf8_to_mbcs_v2(const char *zText, int useAnsi){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !zText ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif +#ifndef SQLITE_OMIT_AUTOINIT + if( sqlite3_initialize() ) return 0; +#endif + return winUtf8ToMbcs(zText, useAnsi); } /* @@ -32971,7 +39552,7 @@ SQLITE_API int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){ if( zValue && zValue[0] ){ zValueUtf8 = winUnicodeToUtf8(zValue); if ( zValueUtf8==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } } sqlite3_free(*ppDirectory); @@ -33043,7 +39624,7 @@ static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){ if( dwLen > 0 ){ /* allocate a buffer and convert to UTF8 */ sqlite3BeginBenignMalloc(); - zOut = sqlite3_win32_mbcs_to_utf8(zTemp); + zOut = winMbcsToUtf8(zTemp, osAreFileApisANSI()); sqlite3EndBenignMalloc(); /* free the system buffer allocated by FormatMessage */ osLocalFree(zTemp); @@ -33068,11 +39649,11 @@ static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){ ** ** This routine is invoked after an error occurs in an OS function. ** It logs a message using sqlite3_log() containing the current value of -** error code and, if possible, the human-readable equivalent from +** error code and, if possible, the human-readable equivalent from ** FormatMessage. ** ** The first argument passed to the macro should be the error code that -** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). +** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). ** The two subsequent arguments should be the name of the OS function that ** failed and the associated file-system path, if any. */ @@ -33103,7 +39684,7 @@ static int winLogErrorAtLine( /* ** The number of times that a ReadFile(), WriteFile(), and DeleteFile() -** will be retried following a locking error - probably caused by +** will be retried following a locking error - probably caused by ** antivirus software. Also the initial delay before the first retry. ** The delay increases linearly with each retry. */ @@ -33116,6 +39697,32 @@ static int winLogErrorAtLine( static int winIoerrRetry = SQLITE_WIN32_IOERR_RETRY; static int winIoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY; +/* +** The "winIoerrCanRetry1" macro is used to determine if a particular I/O +** error code obtained via GetLastError() is eligible to be retried. It +** must accept the error code DWORD as its only argument and should return +** non-zero if the error code is transient in nature and the operation +** responsible for generating the original error might succeed upon being +** retried. The argument to this macro should be a variable. +** +** Additionally, a macro named "winIoerrCanRetry2" may be defined. If it +** is defined, it will be consulted only when the macro "winIoerrCanRetry1" +** returns zero. The "winIoerrCanRetry2" macro is completely optional and +** may be used to include additional error codes in the set that should +** result in the failing I/O operation being retried by the caller. If +** defined, the "winIoerrCanRetry2" macro must exhibit external semantics +** identical to those of the "winIoerrCanRetry1" macro. +*/ +#if !defined(winIoerrCanRetry1) +#define winIoerrCanRetry1(a) (((a)==ERROR_ACCESS_DENIED) || \ + ((a)==ERROR_SHARING_VIOLATION) || \ + ((a)==ERROR_LOCK_VIOLATION) || \ + ((a)==ERROR_DEV_NOT_EXIST) || \ + ((a)==ERROR_NETNAME_DELETED) || \ + ((a)==ERROR_SEM_TIMEOUT) || \ + ((a)==ERROR_NETWORK_UNREACHABLE)) +#endif + /* ** If a ReadFile() or WriteFile() error occurs, invoke this routine ** to see if it should be retried. Return TRUE to retry. Return FALSE @@ -33129,13 +39736,18 @@ static int winRetryIoerr(int *pnRetry, DWORD *pError){ } return 0; } - if( e==ERROR_ACCESS_DENIED || - e==ERROR_LOCK_VIOLATION || - e==ERROR_SHARING_VIOLATION ){ + if( winIoerrCanRetry1(e) ){ sqlite3_win32_sleep(winIoerrRetryDelay*(1+*pnRetry)); ++*pnRetry; return 1; } +#if defined(winIoerrCanRetry2) + else if( winIoerrCanRetry2(e) ){ + sqlite3_win32_sleep(winIoerrRetryDelay*(1+*pnRetry)); + ++*pnRetry; + return 1; + } +#endif if( pError ){ *pError = e; } @@ -33145,25 +39757,26 @@ static int winRetryIoerr(int *pnRetry, DWORD *pError){ /* ** Log a I/O error retry episode. */ -static void winLogIoerr(int nRetry){ +static void winLogIoerr(int nRetry, int lineno){ if( nRetry ){ - sqlite3_log(SQLITE_IOERR, - "delayed %dms for lock/sharing conflict", - winIoerrRetryDelay*nRetry*(nRetry+1)/2 + sqlite3_log(SQLITE_NOTICE, + "delayed %dms for lock/sharing conflict at line %d", + winIoerrRetryDelay*nRetry*(nRetry+1)/2, lineno ); } } -#if SQLITE_OS_WINCE -/************************************************************************* -** This section contains code for WinCE only. -*/ -#if !defined(SQLITE_MSVC_LOCALTIME_API) || !SQLITE_MSVC_LOCALTIME_API /* -** The MSVC CRT on Windows CE may not have a localtime() function. So -** create a substitute. +** This #if does not rely on the SQLITE_OS_WINCE define because the +** corresponding section in "date.c" cannot use it. */ -/* #include */ +#if !defined(SQLITE_OMIT_LOCALTIME) && defined(_WIN32_WCE) && \ + (!defined(SQLITE_MSVC_LOCALTIME_API) || !SQLITE_MSVC_LOCALTIME_API) +/* +** The MSVC CRT on Windows CE may not have a localtime() function. +** So define a substitute. +*/ +/* # include */ struct tm *__cdecl localtime(const time_t *t) { static struct tm y; @@ -33187,6 +39800,10 @@ struct tm *__cdecl localtime(const time_t *t) } #endif +#if SQLITE_OS_WINCE +/************************************************************************* +** This section contains code for WinCE only. +*/ #define HANDLE_TO_WINFILE(a) (winFile*)&((char*)a)[-(int)offsetof(winFile,h)] /* @@ -33217,7 +39834,7 @@ static int winceCreateLock(const char *zFilename, winFile *pFile){ zName = winUtf8ToUnicode(zFilename); if( zName==0 ){ /* out of memory */ - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } /* Initialize the local lockdata */ @@ -33241,17 +39858,17 @@ static int winceCreateLock(const char *zFilename, winFile *pFile){ /* Acquire the mutex before continuing */ winceMutexAcquire(pFile->hMutex); - - /* Since the names of named mutexes, semaphores, file mappings etc are + + /* Since the names of named mutexes, semaphores, file mappings etc are ** case-sensitive, take advantage of that by uppercasing the mutex name ** and using that as the shared filemapping name. */ osCharUpperW(zName); pFile->hShared = osCreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof(winceLock), - zName); + zName); - /* Set a flag that indicates we're the first to create the memory so it + /* Set a flag that indicates we're the first to create the memory so it ** must be zero-initialized */ lastErrno = osGetLastError(); if (lastErrno == ERROR_ALREADY_EXISTS){ @@ -33262,7 +39879,7 @@ static int winceCreateLock(const char *zFilename, winFile *pFile){ /* If we succeeded in making the shared memory handle, map it. */ if( pFile->hShared ){ - pFile->shared = (winceLock*)osMapViewOfFile(pFile->hShared, + pFile->shared = (winceLock*)osMapViewOfFile(pFile->hShared, FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(winceLock)); /* If mapping failed, close the shared memory handle and erase it */ if( !pFile->shared ){ @@ -33288,7 +39905,7 @@ static int winceCreateLock(const char *zFilename, winFile *pFile){ pFile->hMutex = NULL; return SQLITE_IOERR; } - + /* Initialize the shared memory if we're supposed to */ if( bInit ){ memset(pFile->shared, 0, sizeof(winceLock)); @@ -33326,13 +39943,13 @@ static void winceDestroyLock(winFile *pFile){ osCloseHandle(pFile->hShared); /* Done with the mutex */ - winceMutexRelease(pFile->hMutex); + winceMutexRelease(pFile->hMutex); osCloseHandle(pFile->hMutex); pFile->hMutex = NULL; } } -/* +/* ** An implementation of the LockFile() API of Windows for CE */ static BOOL winceLockFile( @@ -33543,8 +40160,8 @@ static BOOL winUnlockFile( #endif /* -** Move the current position of the file handle passed as the first -** argument to offset iOffset within the file. If successful, return 0. +** Move the current position of the file handle passed as the first +** argument to offset iOffset within the file. If successful, return 0. ** Otherwise, set pFile->lastErrno and return non-zero. */ static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){ @@ -33559,11 +40176,11 @@ static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){ upperBits = (LONG)((iOffset>>32) & 0x7fffffff); lowerBits = (LONG)(iOffset & 0xffffffff); - /* API oddity: If successful, SetFilePointer() returns a dword + /* API oddity: If successful, SetFilePointer() returns a dword ** containing the lower 32-bits of the new file-offset. Or, if it fails, - ** it returns INVALID_SET_FILE_POINTER. However according to MSDN, - ** INVALID_SET_FILE_POINTER may also be a valid new offset. So to determine - ** whether an error has actually occurred, it is also necessary to call + ** it returns INVALID_SET_FILE_POINTER. However according to MSDN, + ** INVALID_SET_FILE_POINTER may also be a valid new offset. So to determine + ** whether an error has actually occurred, it is also necessary to call ** GetLastError(). */ dwRet = osSetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN); @@ -33629,7 +40246,8 @@ static int winClose(sqlite3_file *id){ assert( pFile->pShm==0 ); #endif assert( pFile->h!=NULL && pFile->h!=INVALID_HANDLE_VALUE ); - OSTRACE(("CLOSE file=%p\n", pFile->h)); + OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p\n", + osGetCurrentProcessId(), pFile, pFile->h)); #if SQLITE_MAX_MMAP_SIZE>0 winUnmapfile(pFile); @@ -33641,12 +40259,17 @@ static int winClose(sqlite3_file *id){ }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (sqlite3_win32_sleep(100), 1) ); #if SQLITE_OS_WINCE #define WINCE_DELETION_ATTEMPTS 3 - winceDestroyLock(pFile); + { + winVfsAppData *pAppData = (winVfsAppData*)pFile->pVfs->pAppData; + if( pAppData==NULL || !pAppData->bNoLock ){ + winceDestroyLock(pFile); + } + } if( pFile->zDeleteOnClose ){ int cnt = 0; while( osDeleteFileW(pFile->zDeleteOnClose)==0 - && osGetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff + && osGetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff && cnt++ < WINCE_DELETION_ATTEMPTS ){ sqlite3_win32_sleep(100); /* Wait a little before trying again */ @@ -33658,7 +40281,8 @@ static int winClose(sqlite3_file *id){ pFile->h = NULL; } OpenCounter(-1); - OSTRACE(("CLOSE file=%p, rc=%s\n", pFile->h, rc ? "ok" : "failed")); + OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p, rc=%s\n", + osGetCurrentProcessId(), pFile, pFile->h, rc ? "ok" : "failed")); return rc ? SQLITE_OK : winLogError(SQLITE_IOERR_CLOSE, osGetLastError(), "winClose", pFile->zPath); @@ -33675,7 +40299,7 @@ static int winRead( int amt, /* Number of bytes to read */ sqlite3_int64 offset /* Begin reading at this offset */ ){ -#if !SQLITE_OS_WINCE +#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED) OVERLAPPED overlapped; /* The offset for ReadFile. */ #endif winFile *pFile = (winFile*)id; /* file handle */ @@ -33686,7 +40310,8 @@ static int winRead( assert( amt>0 ); assert( offset>=0 ); SimulateIOError(return SQLITE_IOERR_READ); - OSTRACE(("READ file=%p, buffer=%p, amount=%d, offset=%lld, lock=%d\n", + OSTRACE(("READ pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, " + "offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile, pFile->h, pBuf, amt, offset, pFile->locktype)); #if SQLITE_MAX_MMAP_SIZE>0 @@ -33695,7 +40320,8 @@ static int winRead( if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt); - OSTRACE(("READ-MMAP file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("READ-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; }else{ int nCopy = (int)(pFile->mmapSize - offset); @@ -33707,9 +40333,10 @@ static int winRead( } #endif -#if SQLITE_OS_WINCE +#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED) if( winSeekFile(pFile, offset) ){ - OSTRACE(("READ file=%p, rc=SQLITE_FULL\n", pFile->h)); + OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_FULL; } while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){ @@ -33723,19 +40350,22 @@ static int winRead( DWORD lastErrno; if( winRetryIoerr(&nRetry, &lastErrno) ) continue; pFile->lastErrno = lastErrno; - OSTRACE(("READ file=%p, rc=SQLITE_IOERR_READ\n", pFile->h)); + OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_READ\n", + osGetCurrentProcessId(), pFile, pFile->h)); return winLogError(SQLITE_IOERR_READ, pFile->lastErrno, "winRead", pFile->zPath); } - winLogIoerr(nRetry); + winLogIoerr(nRetry, __LINE__); if( nRead<(DWORD)amt ){ /* Unread parts of the buffer must be zero-filled */ memset(&((char*)pBuf)[nRead], 0, amt-nRead); - OSTRACE(("READ file=%p, rc=SQLITE_IOERR_SHORT_READ\n", pFile->h)); + OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_SHORT_READ\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_IOERR_SHORT_READ; } - OSTRACE(("READ file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; } @@ -33758,16 +40388,18 @@ static int winWrite( SimulateIOError(return SQLITE_IOERR_WRITE); SimulateDiskfullError(return SQLITE_FULL); - OSTRACE(("WRITE file=%p, buffer=%p, amount=%d, offset=%lld, lock=%d\n", + OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, " + "offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile, pFile->h, pBuf, amt, offset, pFile->locktype)); -#if SQLITE_MAX_MMAP_SIZE>0 +#if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0 /* Deal with as much of this write request as possible by transfering ** data from the memory mapping using memcpy(). */ if( offsetmmapSize ){ if( offset+amt <= pFile->mmapSize ){ memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, amt); - OSTRACE(("WRITE-MMAP file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("WRITE-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; }else{ int nCopy = (int)(pFile->mmapSize - offset); @@ -33779,13 +40411,13 @@ static int winWrite( } #endif -#if SQLITE_OS_WINCE +#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED) rc = winSeekFile(pFile, offset); if( rc==0 ){ #else { #endif -#if !SQLITE_OS_WINCE +#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED) OVERLAPPED overlapped; /* The offset for WriteFile. */ #endif u8 *aRem = (u8 *)pBuf; /* Data yet to be written */ @@ -33793,14 +40425,14 @@ static int winWrite( DWORD nWrite; /* Bytes written by each WriteFile() call */ DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */ -#if !SQLITE_OS_WINCE +#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED) memset(&overlapped, 0, sizeof(OVERLAPPED)); overlapped.Offset = (LONG)(offset & 0xffffffff); overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff); #endif while( nRem>0 ){ -#if SQLITE_OS_WINCE +#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED) if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){ #else if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){ @@ -33813,7 +40445,7 @@ static int winWrite( lastErrno = osGetLastError(); break; } -#if !SQLITE_OS_WINCE +#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED) offset += nWrite; overlapped.Offset = (LONG)(offset & 0xffffffff); overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff); @@ -33830,17 +40462,20 @@ static int winWrite( if( rc ){ if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL ) || ( pFile->lastErrno==ERROR_DISK_FULL )){ - OSTRACE(("WRITE file=%p, rc=SQLITE_FULL\n", pFile->h)); + OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n", + osGetCurrentProcessId(), pFile, pFile->h)); return winLogError(SQLITE_FULL, pFile->lastErrno, "winWrite1", pFile->zPath); } - OSTRACE(("WRITE file=%p, rc=SQLITE_IOERR_WRITE\n", pFile->h)); + OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_WRITE\n", + osGetCurrentProcessId(), pFile, pFile->h)); return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno, "winWrite2", pFile->zPath); }else{ - winLogIoerr(nRetry); + winLogIoerr(nRetry, __LINE__); } - OSTRACE(("WRITE file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; } @@ -33854,8 +40489,8 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ assert( pFile ); SimulateIOError(return SQLITE_IOERR_TRUNCATE); - OSTRACE(("TRUNCATE file=%p, size=%lld, lock=%d\n", - pFile->h, nByte, pFile->locktype)); + OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, size=%lld, lock=%d\n", + osGetCurrentProcessId(), pFile, pFile->h, nByte, pFile->locktype)); /* If the user has configured a chunk-size for this file, truncate the ** file so that it consists of an integer number of chunks (i.e. the @@ -33887,7 +40522,8 @@ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ } #endif - OSTRACE(("TRUNCATE file=%p, rc=%s\n", pFile->h, sqlite3ErrName(rc))); + OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, rc=%s\n", + osGetCurrentProcessId(), pFile, pFile->h, sqlite3ErrName(rc))); return rc; } @@ -33911,7 +40547,7 @@ static int winSync(sqlite3_file *id, int flags){ BOOL rc; #endif #if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || \ - (defined(SQLITE_TEST) && defined(SQLITE_DEBUG)) + defined(SQLITE_HAVE_OS_TRACE) /* ** Used when SQLITE_NO_SYNC is not defined and by the assert() and/or ** OSTRACE() macros. @@ -33932,8 +40568,9 @@ static int winSync(sqlite3_file *id, int flags){ */ SimulateDiskfullError( return SQLITE_FULL ); - OSTRACE(("SYNC file=%p, flags=%x, lock=%d\n", - pFile->h, flags, pFile->locktype)); + OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, flags=%x, lock=%d\n", + osGetCurrentProcessId(), pFile, pFile->h, flags, + pFile->locktype)); #ifndef SQLITE_TEST UNUSED_PARAMETER(flags); @@ -33948,19 +40585,38 @@ static int winSync(sqlite3_file *id, int flags){ ** no-op */ #ifdef SQLITE_NO_SYNC - OSTRACE(("SYNC-NOP file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("SYNC-NOP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; #else +#if SQLITE_MAX_MMAP_SIZE>0 + if( pFile->pMapRegion ){ + if( osFlushViewOfFile(pFile->pMapRegion, 0) ){ + OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, " + "rc=SQLITE_OK\n", osGetCurrentProcessId(), + pFile, pFile->pMapRegion)); + }else{ + pFile->lastErrno = osGetLastError(); + OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, " + "rc=SQLITE_IOERR_MMAP\n", osGetCurrentProcessId(), + pFile, pFile->pMapRegion)); + return winLogError(SQLITE_IOERR_MMAP, pFile->lastErrno, + "winSync1", pFile->zPath); + } + } +#endif rc = osFlushFileBuffers(pFile->h); SimulateIOError( rc=FALSE ); if( rc ){ - OSTRACE(("SYNC file=%p, rc=SQLITE_OK\n", pFile->h)); + OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n", + osGetCurrentProcessId(), pFile, pFile->h)); return SQLITE_OK; }else{ pFile->lastErrno = osGetLastError(); - OSTRACE(("SYNC file=%p, rc=SQLITE_IOERR_FSYNC\n", pFile->h)); + OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_FSYNC\n", + osGetCurrentProcessId(), pFile, pFile->h)); return winLogError(SQLITE_IOERR_FSYNC, pFile->lastErrno, - "winSync", pFile->zPath); + "winSync2", pFile->zPath); } #endif } @@ -34074,7 +40730,7 @@ static int winGetReadLock(winFile *pFile){ pFile->lastErrno = osGetLastError(); /* No need to log a failure to lock */ } - OSTRACE(("READ-LOCK file=%p, rc=%s\n", pFile->h, sqlite3ErrName(res))); + OSTRACE(("READ-LOCK file=%p, result=%d\n", pFile->h, res)); return res; } @@ -34098,7 +40754,7 @@ static int winUnlockReadLock(winFile *pFile){ winLogError(SQLITE_IOERR_UNLOCK, pFile->lastErrno, "winUnlockReadLock", pFile->zPath); } - OSTRACE(("READ-UNLOCK file=%p, rc=%s\n", pFile->h, sqlite3ErrName(res))); + OSTRACE(("READ-UNLOCK file=%p, result=%d\n", pFile->h, res)); return res; } @@ -34149,6 +40805,12 @@ static int winLock(sqlite3_file *id, int locktype){ return SQLITE_OK; } + /* Do not allow any kind of write-lock on a read-only database + */ + if( (pFile->ctrlFlags & WINFILE_RDONLY)!=0 && locktype>=RESERVED_LOCK ){ + return SQLITE_IOERR_LOCK; + } + /* Make sure the locking sequence is correct */ assert( pFile->locktype!=NO_LOCK || locktype==SHARED_LOCK ); @@ -34160,9 +40822,8 @@ static int winLock(sqlite3_file *id, int locktype){ ** the PENDING_LOCK byte is temporary. */ newLocktype = pFile->locktype; - if( (pFile->locktype==NO_LOCK) - || ( (locktype==EXCLUSIVE_LOCK) - && (pFile->locktype==RESERVED_LOCK)) + if( pFile->locktype==NO_LOCK + || (locktype==EXCLUSIVE_LOCK && pFile->locktype<=RESERVED_LOCK) ){ int cnt = 3; while( cnt-->0 && (res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS, @@ -34173,8 +40834,16 @@ static int winLock(sqlite3_file *id, int locktype){ ** If you are using this code as a model for alternative VFSes, do not ** copy this retry logic. It is a hack intended for Windows only. */ - OSTRACE(("LOCK-PENDING-FAIL file=%p, count=%d, rc=%s\n", - pFile->h, cnt, sqlite3ErrName(res))); + lastErrno = osGetLastError(); + OSTRACE(("LOCK-PENDING-FAIL file=%p, count=%d, result=%d\n", + pFile->h, cnt, res)); + if( lastErrno==ERROR_INVALID_HANDLE ){ + pFile->lastErrno = lastErrno; + rc = SQLITE_IOERR_LOCK; + OSTRACE(("LOCK-FAIL file=%p, count=%d, rc=%s\n", + pFile->h, cnt, sqlite3ErrName(rc))); + return rc; + } if( cnt ) sqlite3_win32_sleep(1); } gotPendingLock = res; @@ -34259,7 +40928,7 @@ static int winLock(sqlite3_file *id, int locktype){ ** non-zero, otherwise zero. */ static int winCheckReservedLock(sqlite3_file *id, int *pResOut){ - int rc; + int res; winFile *pFile = (winFile*)id; SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); @@ -34267,17 +40936,17 @@ static int winCheckReservedLock(sqlite3_file *id, int *pResOut){ assert( id!=0 ); if( pFile->locktype>=RESERVED_LOCK ){ - rc = 1; - OSTRACE(("TEST-WR-LOCK file=%p, rc=%d (local)\n", pFile->h, rc)); + res = 1; + OSTRACE(("TEST-WR-LOCK file=%p, result=%d (local)\n", pFile->h, res)); }else{ - rc = winLockFile(&pFile->h, SQLITE_LOCKFILEEX_FLAGS,RESERVED_BYTE, 0, 1, 0); - if( rc ){ + res = winLockFile(&pFile->h, SQLITE_LOCKFILEEX_FLAGS,RESERVED_BYTE,0,1,0); + if( res ){ winUnlockFile(&pFile->h, RESERVED_BYTE, 0, 1, 0); } - rc = !rc; - OSTRACE(("TEST-WR-LOCK file=%p, rc=%d (remote)\n", pFile->h, rc)); + res = !res; + OSTRACE(("TEST-WR-LOCK file=%p, result=%d (remote)\n", pFile->h, res)); } - *pResOut = rc; + *pResOut = res; OSTRACE(("TEST-WR-LOCK file=%p, pResOut=%p, *pResOut=%d, rc=SQLITE_OK\n", pFile->h, pResOut, *pResOut)); return SQLITE_OK; @@ -34327,8 +40996,46 @@ static int winUnlock(sqlite3_file *id, int locktype){ return rc; } +/****************************************************************************** +****************************** No-op Locking ********************************** +** +** Of the various locking implementations available, this is by far the +** simplest: locking is ignored. No attempt is made to lock the database +** file for reading or writing. +** +** This locking mode is appropriate for use on read-only databases +** (ex: databases that are burned into CD-ROM, for example.) It can +** also be used if the application employs some external mechanism to +** prevent simultaneous access of the same database by two or more +** database connections. But there is a serious risk of database +** corruption if this locking mode is used in situations where multiple +** database connections are accessing the same database file at the same +** time and one or more of those connections are writing. +*/ + +static int winNolockLock(sqlite3_file *id, int locktype){ + UNUSED_PARAMETER(id); + UNUSED_PARAMETER(locktype); + return SQLITE_OK; +} + +static int winNolockCheckReservedLock(sqlite3_file *id, int *pResOut){ + UNUSED_PARAMETER(id); + UNUSED_PARAMETER(pResOut); + return SQLITE_OK; +} + +static int winNolockUnlock(sqlite3_file *id, int locktype){ + UNUSED_PARAMETER(id); + UNUSED_PARAMETER(locktype); + return SQLITE_OK; +} + +/******************* End of the no-op lock implementation ********************* +******************************************************************************/ + /* -** If *pArg is inititially negative then this is a query. Set *pArg to +** If *pArg is initially negative then this is a query. Set *pArg to ** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set. ** ** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags. @@ -34360,7 +41067,7 @@ static int winFileControl(sqlite3_file *id, int op, void *pArg){ OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h)); return SQLITE_OK; } - case SQLITE_LAST_ERRNO: { + case SQLITE_FCNTL_LAST_ERRNO: { *(int*)pArg = (int)pFile->lastErrno; OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h)); return SQLITE_OK; @@ -34418,6 +41125,23 @@ static int winFileControl(sqlite3_file *id, int op, void *pArg){ OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h)); return SQLITE_OK; } + case SQLITE_FCNTL_WIN32_GET_HANDLE: { + LPHANDLE phFile = (LPHANDLE)pArg; + *phFile = pFile->h; + OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h)); + return SQLITE_OK; + } +#ifdef SQLITE_TEST + case SQLITE_FCNTL_WIN32_SET_HANDLE: { + LPHANDLE phFile = (LPHANDLE)pArg; + HANDLE hOldFile = pFile->h; + pFile->h = *phFile; + *phFile = hOldFile; + OSTRACE(("FCNTL oldFile=%p, newFile=%p, rc=SQLITE_OK\n", + hOldFile, pFile->h)); + return SQLITE_OK; + } +#endif case SQLITE_FCNTL_TEMPFILENAME: { char *zTFile = 0; int rc = winGetTempname(pFile->pVfs, &zTFile); @@ -34475,23 +41199,23 @@ static int winDeviceCharacteristics(sqlite3_file *id){ ((p->ctrlFlags & WINFILE_PSOW)?SQLITE_IOCAP_POWERSAFE_OVERWRITE:0); } -/* +/* ** Windows will only let you create file view mappings ** on allocation size granularity boundaries. ** During sqlite3_os_init() we do a GetSystemInfo() ** to get the granularity size. */ -SYSTEM_INFO winSysInfo; +static SYSTEM_INFO winSysInfo; #ifndef SQLITE_OMIT_WAL /* ** Helper functions to obtain and relinquish the global mutex. The -** global mutex is used to protect the winLockInfo objects used by +** global mutex is used to protect the winLockInfo objects used by ** this file, all of which may be shared by multiple threads. ** -** Function winShmMutexHeld() is used to assert() that the global mutex -** is held when required. This function is only used as part of assert() +** Function winShmMutexHeld() is used to assert() that the global mutex +** is held when required. This function is only used as part of assert() ** statements. e.g. ** ** winShmEnterMutex() @@ -34499,14 +41223,14 @@ SYSTEM_INFO winSysInfo; ** winShmLeaveMutex() */ static void winShmEnterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } static void winShmLeaveMutex(void){ - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } #ifndef NDEBUG static int winShmMutexHeld(void) { - return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); + return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1)); } #endif @@ -34521,10 +41245,10 @@ static int winShmMutexHeld(void) { ** this object or while reading or writing the following fields: ** ** nRef -** pNext +** pNext ** ** The following fields are read-only after the object is created: -** +** ** fid ** zFilename ** @@ -34549,7 +41273,7 @@ struct winShmNode { int nRef; /* Number of winShm objects pointing to this */ winShm *pFirst; /* All winShm objects pointing to this */ winShmNode *pNext; /* Next in list of all winShmNode objects */ -#ifdef SQLITE_DEBUG +#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) u8 nextShmId; /* Next available winShm.id value */ #endif }; @@ -34580,7 +41304,7 @@ struct winShm { u8 hasMutex; /* True if holding the winShmNode mutex */ u16 sharedMask; /* Mask of shared locks held */ u16 exclMask; /* Mask of exclusive locks held */ -#ifdef SQLITE_DEBUG +#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) u8 id; /* Id of this connection with its winShmNode */ #endif }; @@ -34594,12 +41318,12 @@ struct winShm { /* ** Apply advisory locks for all n bytes beginning at ofst. */ -#define _SHM_UNLCK 1 -#define _SHM_RDLCK 2 -#define _SHM_WRLCK 3 +#define WINSHM_UNLCK 1 +#define WINSHM_RDLCK 2 +#define WINSHM_WRLCK 3 static int winShmSystemLock( winShmNode *pFile, /* Apply locks to this open shared-memory segment */ - int lockType, /* _SHM_UNLCK, _SHM_RDLCK, or _SHM_WRLCK */ + int lockType, /* WINSHM_UNLCK, WINSHM_RDLCK, or WINSHM_WRLCK */ int ofst, /* Offset to first byte to be locked/unlocked */ int nByte /* Number of bytes to lock or unlock */ ){ @@ -34612,15 +41336,15 @@ static int winShmSystemLock( pFile->hFile.h, lockType, ofst, nByte)); /* Release/Acquire the system-level lock */ - if( lockType==_SHM_UNLCK ){ + if( lockType==WINSHM_UNLCK ){ rc = winUnlockFile(&pFile->hFile.h, ofst, 0, nByte, 0); }else{ /* Initialize the locking parameters */ DWORD dwFlags = LOCKFILE_FAIL_IMMEDIATELY; - if( lockType == _SHM_WRLCK ) dwFlags |= LOCKFILE_EXCLUSIVE_LOCK; + if( lockType == WINSHM_WRLCK ) dwFlags |= LOCKFILE_EXCLUSIVE_LOCK; rc = winLockFile(&pFile->hFile.h, dwFlags, ofst, 0, nByte, 0); } - + if( rc!= 0 ){ rc = SQLITE_OK; }else{ @@ -34629,7 +41353,7 @@ static int winShmSystemLock( } OSTRACE(("SHM-LOCK file=%p, func=%s, errno=%lu, rc=%s\n", - pFile->hFile.h, (lockType == _SHM_UNLCK) ? "winUnlockFile" : + pFile->hFile.h, (lockType == WINSHM_UNLCK) ? "winUnlockFile" : "winLockFile", pFile->lastErrno, sqlite3ErrName(rc))); return rc; @@ -34707,16 +41431,16 @@ static int winOpenSharedMemory(winFile *pDbFd){ ** allocate space for a new winShmNode and filename. */ p = sqlite3MallocZero( sizeof(*p) ); - if( p==0 ) return SQLITE_IOERR_NOMEM; + if( p==0 ) return SQLITE_IOERR_NOMEM_BKPT; nName = sqlite3Strlen30(pDbFd->zPath); pNew = sqlite3MallocZero( sizeof(*pShmNode) + nName + 17 ); if( pNew==0 ){ sqlite3_free(p); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } pNew->zFilename = (char*)&pNew[1]; sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath); - sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename); + sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename); /* Look to see if there is an existing winShmNode that can be used. ** If no matching winShmNode currently exists, create a new one. @@ -34737,10 +41461,12 @@ static int winOpenSharedMemory(winFile *pDbFd){ pShmNode->pNext = winShmNodeList; winShmNodeList = pShmNode; - pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ - rc = SQLITE_IOERR_NOMEM; - goto shm_open_err; + if( sqlite3GlobalConfig.bCoreMutex ){ + pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); + if( pShmNode->mutex==0 ){ + rc = SQLITE_IOERR_NOMEM_BKPT; + goto shm_open_err; + } } rc = winOpen(pDbFd->pVfs, @@ -34753,9 +41479,9 @@ static int winOpenSharedMemory(winFile *pDbFd){ } /* Check to see if another process is holding the dead-man switch. - ** If not, truncate the file to zero length. + ** If not, truncate the file to zero length. */ - if( winShmSystemLock(pShmNode, _SHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){ + if( winShmSystemLock(pShmNode, WINSHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){ rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0); if( rc!=SQLITE_OK ){ rc = winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(), @@ -34763,15 +41489,15 @@ static int winOpenSharedMemory(winFile *pDbFd){ } } if( rc==SQLITE_OK ){ - winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1); - rc = winShmSystemLock(pShmNode, _SHM_RDLCK, WIN_SHM_DMS, 1); + winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); + rc = winShmSystemLock(pShmNode, WINSHM_RDLCK, WIN_SHM_DMS, 1); } if( rc ) goto shm_open_err; } /* Make the new connection a child of the winShmNode */ p->pShmNode = pShmNode; -#ifdef SQLITE_DEBUG +#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) p->id = pShmNode->nextShmId++; #endif pShmNode->nRef++; @@ -34782,7 +41508,7 @@ static int winOpenSharedMemory(winFile *pDbFd){ ** the cover of the winShmEnterMutex() mutex and the pointer from the ** new (struct winShm) object to the pShmNode has been set. All that is ** left to do is to link the new object into the linked list starting - ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex + ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex ** mutex. */ sqlite3_mutex_enter(pShmNode->mutex); @@ -34793,7 +41519,7 @@ static int winOpenSharedMemory(winFile *pDbFd){ /* Jump here on any error */ shm_open_err: - winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1); + winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); winShmPurge(pDbFd->pVfs, 0); /* This call frees pShmNode if required */ sqlite3_free(p); sqlite3_free(pNew); @@ -34802,7 +41528,7 @@ shm_open_err: } /* -** Close a connection to shared-memory. Delete the underlying +** Close a connection to shared-memory. Delete the underlying ** storage if deleteFlag is true. */ static int winShmUnmap( @@ -34882,7 +41608,7 @@ static int winShmLock( /* Unlock the system-level locks */ if( (mask & allMask)==0 ){ - rc = winShmSystemLock(pShmNode, _SHM_UNLCK, ofst+WIN_SHM_BASE, n); + rc = winShmSystemLock(pShmNode, WINSHM_UNLCK, ofst+WIN_SHM_BASE, n); }else{ rc = SQLITE_OK; } @@ -34891,7 +41617,7 @@ static int winShmLock( if( rc==SQLITE_OK ){ p->exclMask &= ~mask; p->sharedMask &= ~mask; - } + } }else if( flags & SQLITE_SHM_SHARED ){ u16 allShared = 0; /* Union of locks held by connections other than "p" */ @@ -34910,7 +41636,7 @@ static int winShmLock( /* Get shared locks at the system level, if necessary */ if( rc==SQLITE_OK ){ if( (allShared & mask)==0 ){ - rc = winShmSystemLock(pShmNode, _SHM_RDLCK, ofst+WIN_SHM_BASE, n); + rc = winShmSystemLock(pShmNode, WINSHM_RDLCK, ofst+WIN_SHM_BASE, n); }else{ rc = SQLITE_OK; } @@ -34930,12 +41656,12 @@ static int winShmLock( break; } } - + /* Get the exclusive locks at the system level. Then if successful ** also mark the local connection as being locked. */ if( rc==SQLITE_OK ){ - rc = winShmSystemLock(pShmNode, _SHM_WRLCK, ofst+WIN_SHM_BASE, n); + rc = winShmSystemLock(pShmNode, WINSHM_WRLCK, ofst+WIN_SHM_BASE, n); if( rc==SQLITE_OK ){ assert( (p->sharedMask & mask)==0 ); p->exclMask |= mask; @@ -34950,7 +41676,7 @@ static int winShmLock( } /* -** Implement a memory barrier or memory fence on shared memory. +** Implement a memory barrier or memory fence on shared memory. ** ** All loads and stores begun before the barrier must complete before ** any load or store begun after the barrier. @@ -34959,28 +41685,28 @@ static void winShmBarrier( sqlite3_file *fd /* Database holding the shared memory */ ){ UNUSED_PARAMETER(fd); - /* MemoryBarrier(); // does not work -- do not know why not */ - winShmEnterMutex(); + sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ + winShmEnterMutex(); /* Also mutex, for redundancy */ winShmLeaveMutex(); } /* -** This function is called to obtain a pointer to region iRegion of the -** shared-memory associated with the database file fd. Shared-memory regions -** are numbered starting from zero. Each shared-memory region is szRegion +** This function is called to obtain a pointer to region iRegion of the +** shared-memory associated with the database file fd. Shared-memory regions +** are numbered starting from zero. Each shared-memory region is szRegion ** bytes in size. ** ** If an error occurs, an error code is returned and *pp is set to NULL. ** ** Otherwise, if the isWrite parameter is 0 and the requested shared-memory ** region has not been allocated (by any client, including one running in a -** separate process), then *pp is set to NULL and SQLITE_OK returned. If -** isWrite is non-zero and the requested shared-memory region has not yet +** separate process), then *pp is set to NULL and SQLITE_OK returned. If +** isWrite is non-zero and the requested shared-memory region has not yet ** been allocated, it is allocated by this function. ** ** If the shared-memory region has already been allocated or is allocated by -** this call as described above, then it is mapped into this processes -** address space (if it is not already), *pp is set to point to the mapped +** this call as described above, then it is mapped into this processes +** address space (if it is not already), *pp is set to point to the mapped ** memory and SQLITE_OK returned. */ static int winShmMap( @@ -34991,16 +41717,16 @@ static int winShmMap( void volatile **pp /* OUT: Mapped memory */ ){ winFile *pDbFd = (winFile*)fd; - winShm *p = pDbFd->pShm; + winShm *pShm = pDbFd->pShm; winShmNode *pShmNode; int rc = SQLITE_OK; - if( !p ){ + if( !pShm ){ rc = winOpenSharedMemory(pDbFd); if( rc!=SQLITE_OK ) return rc; - p = pDbFd->pShm; + pShm = pDbFd->pShm; } - pShmNode = p->pShmNode; + pShmNode = pShm->pShmNode; sqlite3_mutex_enter(pShmNode->mutex); assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); @@ -35040,11 +41766,11 @@ static int winShmMap( } /* Map the requested memory region into this processes address space. */ - apNew = (struct ShmRegion *)sqlite3_realloc( + apNew = (struct ShmRegion *)sqlite3_realloc64( pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0]) ); if( !apNew ){ - rc = SQLITE_IOERR_NOMEM; + rc = SQLITE_IOERR_NOMEM_BKPT; goto shmpage_out; } pShmNode->aRegion = apNew; @@ -35052,17 +41778,17 @@ static int winShmMap( while( pShmNode->nRegion<=iRegion ){ HANDLE hMap = NULL; /* file-mapping handle */ void *pMap = 0; /* Mapped memory region */ - + #if SQLITE_OS_WINRT hMap = osCreateFileMappingFromApp(pShmNode->hFile.h, NULL, PAGE_READWRITE, nByte, NULL ); #elif defined(SQLITE_WIN32_HAS_WIDE) - hMap = osCreateFileMappingW(pShmNode->hFile.h, + hMap = osCreateFileMappingW(pShmNode->hFile.h, NULL, PAGE_READWRITE, 0, nByte, NULL ); -#elif defined(SQLITE_WIN32_HAS_ANSI) - hMap = osCreateFileMappingA(pShmNode->hFile.h, +#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA + hMap = osCreateFileMappingA(pShmNode->hFile.h, NULL, PAGE_READWRITE, 0, nByte, NULL ); #endif @@ -35159,14 +41885,14 @@ static int winUnmapfile(winFile *pFile){ /* ** Memory map or remap the file opened by file-descriptor pFd (if the file -** is already mapped, the existing mapping is replaced by the new). Or, if -** there already exists a mapping for this file, and there are still +** is already mapped, the existing mapping is replaced by the new). Or, if +** there already exists a mapping for this file, and there are still ** outstanding xFetch() references to it, this function is a no-op. ** -** If parameter nByte is non-negative, then it is the requested size of -** the mapping to create. Otherwise, if nByte is less than zero, then the +** If parameter nByte is non-negative, then it is the requested size of +** the mapping to create. Otherwise, if nByte is less than zero, then the ** requested size is the size of the file on disk. The actual size of the -** created mapping is either the requested size or the value configured +** created mapping is either the requested size or the value configured ** using SQLITE_FCNTL_MMAP_SIZE, whichever is smaller. ** ** SQLITE_OK is returned if no error occurs (even if the mapping is not @@ -35195,7 +41921,7 @@ static int winMapfile(winFile *pFd, sqlite3_int64 nByte){ nMap = pFd->mmapSizeMax; } nMap &= ~(sqlite3_int64)(winSysInfo.dwPageSize - 1); - + if( nMap==0 && pFd->mmapSize>0 ){ winUnmapfile(pFd); } @@ -35205,17 +41931,19 @@ static int winMapfile(winFile *pFd, sqlite3_int64 nByte){ DWORD flags = FILE_MAP_READ; winUnmapfile(pFd); +#ifdef SQLITE_MMAP_READWRITE if( (pFd->ctrlFlags & WINFILE_RDONLY)==0 ){ protect = PAGE_READWRITE; flags |= FILE_MAP_WRITE; } +#endif #if SQLITE_OS_WINRT pFd->hMap = osCreateFileMappingFromApp(pFd->h, NULL, protect, nMap, NULL); #elif defined(SQLITE_WIN32_HAS_WIDE) pFd->hMap = osCreateFileMappingW(pFd->h, NULL, protect, (DWORD)((nMap>>32) & 0xffffffff), (DWORD)(nMap & 0xffffffff), NULL); -#elif defined(SQLITE_WIN32_HAS_ANSI) +#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA pFd->hMap = osCreateFileMappingA(pFd->h, NULL, protect, (DWORD)((nMap>>32) & 0xffffffff), (DWORD)(nMap & 0xffffffff), NULL); @@ -35267,7 +41995,7 @@ static int winMapfile(winFile *pFd, sqlite3_int64 nByte){ ** Finally, if an error does occur, return an SQLite error code. The final ** value of *pp is undefined in this case. ** -** If this function does return a pointer, the caller must eventually +** If this function does return a pointer, the caller must eventually ** release the reference by calling winUnfetch(). */ static int winFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ @@ -35302,20 +42030,20 @@ static int winFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){ } /* -** If the third argument is non-NULL, then this function releases a +** If the third argument is non-NULL, then this function releases a ** reference obtained by an earlier call to winFetch(). The second ** argument passed to this function must be the same as the corresponding -** argument that was passed to the winFetch() invocation. +** argument that was passed to the winFetch() invocation. ** -** Or, if the third argument is NULL, then this function is being called -** to inform the VFS layer that, according to POSIX, any existing mapping +** Or, if the third argument is NULL, then this function is being called +** to inform the VFS layer that, according to POSIX, any existing mapping ** may now be invalid and should be unmapped. */ static int winUnfetch(sqlite3_file *fd, i64 iOff, void *p){ #if SQLITE_MAX_MMAP_SIZE>0 winFile *pFd = (winFile*)fd; /* The underlying database file */ - /* If p==0 (unmap the entire file) then there must be no outstanding + /* If p==0 (unmap the entire file) then there must be no outstanding ** xFetch references. Or, if p!=0 (meaning it is an xFetch reference), ** then there must be at least one outstanding. */ assert( (p==0)==(pFd->nFetchOut==0) ); @@ -35331,7 +42059,7 @@ static int winUnfetch(sqlite3_file *fd, i64 iOff, void *p){ }else{ /* FIXME: If Windows truly always prevents truncating or deleting a ** file while a mapping is held, then the following winUnmapfile() call - ** is unnecessary can can be omitted - potentially improving + ** is unnecessary can be omitted - potentially improving ** performance. */ winUnmapfile(pFd); } @@ -35376,6 +42104,44 @@ static const sqlite3_io_methods winIoMethod = { winUnfetch /* xUnfetch */ }; +/* +** This vector defines all the methods that can operate on an +** sqlite3_file for win32 without performing any locking. +*/ +static const sqlite3_io_methods winIoNolockMethod = { + 3, /* iVersion */ + winClose, /* xClose */ + winRead, /* xRead */ + winWrite, /* xWrite */ + winTruncate, /* xTruncate */ + winSync, /* xSync */ + winFileSize, /* xFileSize */ + winNolockLock, /* xLock */ + winNolockUnlock, /* xUnlock */ + winNolockCheckReservedLock, /* xCheckReservedLock */ + winFileControl, /* xFileControl */ + winSectorSize, /* xSectorSize */ + winDeviceCharacteristics, /* xDeviceCharacteristics */ + winShmMap, /* xShmMap */ + winShmLock, /* xShmLock */ + winShmBarrier, /* xShmBarrier */ + winShmUnmap, /* xShmUnmap */ + winFetch, /* xFetch */ + winUnfetch /* xUnfetch */ +}; + +static winVfsAppData winAppData = { + &winIoMethod, /* pMethod */ + 0, /* pAppData */ + 0 /* bNoLock */ +}; + +static winVfsAppData winNolockAppData = { + &winIoNolockMethod, /* pMethod */ + 0, /* pAppData */ + 1 /* bNoLock */ +}; + /**************************************************************************** **************************** sqlite3_vfs methods **************************** ** @@ -35396,7 +42162,7 @@ static char *winConvertToUtf8Filename(const void *zFilename){ } #ifdef SQLITE_WIN32_HAS_ANSI else{ - zConverted = sqlite3_win32_mbcs_to_utf8(zFilename); + zConverted = winMbcsToUtf8(zFilename, osAreFileApisANSI()); } #endif /* caller will handle out of memory */ @@ -35417,7 +42183,7 @@ static void *winConvertFromUtf8Filename(const char *zFilename){ } #ifdef SQLITE_WIN32_HAS_ANSI else{ - zConverted = sqlite3_win32_utf8_to_mbcs(zFilename); + zConverted = winUtf8ToMbcs(zFilename, osAreFileApisANSI()); } #endif /* caller will handle out of memory */ @@ -35461,7 +42227,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ /* It's odd to simulate an io-error here, but really this is just ** using the io-error infrastructure to test that SQLite handles this - ** function failing. + ** function failing. */ SimulateIOError( return SQLITE_IOERR ); @@ -35472,7 +42238,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ zBuf = sqlite3MallocZero( nBuf ); if( !zBuf ){ OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } /* Figure out the effective temporary directory. First, check if one @@ -35530,7 +42296,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ if( !zConverted ){ sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( winIsDir(zConverted) ){ sqlite3_snprintf(nMax, zBuf, "%s", zDir); @@ -35543,7 +42309,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ if( !zConverted ){ sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( cygwin_conv_path( osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A, zDir, @@ -35564,7 +42330,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ sqlite3_free(zConverted); sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } sqlite3_snprintf(nMax, zBuf, "%s", zUtf8); sqlite3_free(zUtf8); @@ -35582,7 +42348,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ if( !zWidePath ){ sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( osGetTempPathW(nMax, zWidePath)==0 ){ sqlite3_free(zWidePath); @@ -35600,7 +42366,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ sqlite3_free(zWidePath); sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } } #ifdef SQLITE_WIN32_HAS_ANSI @@ -35610,7 +42376,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ if( !zMbcsPath ){ sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( osGetTempPathA(nMax, zMbcsPath)==0 ){ sqlite3_free(zBuf); @@ -35618,14 +42384,14 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ return winLogError(SQLITE_IOERR_GETTEMPPATH, osGetLastError(), "winGetTempname3", 0); } - zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath); + zUtf8 = winMbcsToUtf8(zMbcsPath, osAreFileApisANSI()); if( zUtf8 ){ sqlite3_snprintf(nMax, zBuf, "%s", zUtf8); sqlite3_free(zUtf8); }else{ sqlite3_free(zBuf); OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n")); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } } #endif /* SQLITE_WIN32_HAS_ANSI */ @@ -35643,7 +42409,7 @@ static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){ } /* - ** Check that the output buffer is large enough for the temporary file + ** Check that the output buffer is large enough for the temporary file ** name in the following format: ** ** "/etilqs_XXXXXXXXXXXXXXX\0\0" @@ -35708,7 +42474,7 @@ static int winIsDir(const void *zConverted){ ** Open a file. */ static int winOpen( - sqlite3_vfs *pVfs, /* Used to get maximum path name length */ + sqlite3_vfs *pVfs, /* Used to get maximum path length and AppData */ const char *zName, /* Name of the file (UTF-8) */ sqlite3_file *id, /* Write the SQLite file handle here */ int flags, /* Open mode flags */ @@ -35723,6 +42489,7 @@ static int winOpen( #if SQLITE_OS_WINCE int isTemp = 0; #endif + winVfsAppData *pAppData; winFile *pFile = (winFile*)id; void *zConverted; /* Filename in OS encoding */ const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */ @@ -35746,8 +42513,8 @@ static int winOpen( #ifndef NDEBUG int isOpenJournal = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_MAIN_JOURNAL + eType==SQLITE_OPEN_MASTER_JOURNAL + || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_WAL )); #endif @@ -35755,9 +42522,9 @@ static int winOpen( OSTRACE(("OPEN name=%s, pFile=%p, flags=%x, pOutFlags=%p\n", zUtf8Name, id, flags, pOutFlags)); - /* Check the following statements are true: + /* Check the following statements are true: ** - ** (a) Exactly one of the READWRITE and READONLY flags must be set, and + ** (a) Exactly one of the READWRITE and READONLY flags must be set, and ** (b) if CREATE is set, then READWRITE must also be set, and ** (c) if EXCLUSIVE is set, then CREATE must also be set. ** (d) if DELETEONCLOSE is set, then CREATE must also be set. @@ -35767,7 +42534,7 @@ static int winOpen( assert(isExclusive==0 || isCreate); assert(isDelete==0 || isCreate); - /* The main DB, main journal, WAL file and master journal are never + /* The main DB, main journal, WAL file and master journal are never ** automatically deleted. Nor are they ever temporary files. */ assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); @@ -35775,9 +42542,9 @@ static int winOpen( assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); /* Assert that the upper layer has set one of the "file-type" flags. */ - assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB - || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL + assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB + || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL + || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL ); @@ -35792,8 +42559,8 @@ static int winOpen( } #endif - /* If the second argument to this function is NULL, generate a - ** temporary file name to use + /* If the second argument to this function is NULL, generate a + ** temporary file name to use */ if( !zUtf8Name ){ assert( isDelete && !isOpenJournal ); @@ -35817,7 +42584,7 @@ static int winOpen( if( zConverted==0 ){ sqlite3_free(zTmpname); OSTRACE(("OPEN name=%s, rc=SQLITE_IOERR_NOMEM", zUtf8Name)); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( winIsDir(zConverted) ){ @@ -35833,8 +42600,8 @@ static int winOpen( dwDesiredAccess = GENERIC_READ; } - /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is - ** created. SQLite doesn't use it to indicate "exclusive access" + /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is + ** created. SQLite doesn't use it to indicate "exclusive access" ** as it is usually understood. */ if( isExclusive ){ @@ -35912,7 +42679,7 @@ static int winOpen( } } #endif - winLogIoerr(cnt); + winLogIoerr(cnt, __LINE__); OSTRACE(("OPEN file=%p, name=%s, access=%lx, rc=%s\n", h, zUtf8Name, dwDesiredAccess, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok")); @@ -35923,7 +42690,7 @@ static int winOpen( sqlite3_free(zConverted); sqlite3_free(zTmpname); if( isReadWrite && !isExclusive ){ - return winOpen(pVfs, zName, id, + return winOpen(pVfs, zName, id, ((flags|SQLITE_OPEN_READONLY) & ~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)), pOutFlags); @@ -35944,15 +42711,20 @@ static int winOpen( "rc=%s\n", h, zUtf8Name, dwDesiredAccess, pOutFlags, pOutFlags ? *pOutFlags : 0, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok")); + pAppData = (winVfsAppData*)pVfs->pAppData; + #if SQLITE_OS_WINCE - if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB - && (rc = winceCreateLock(zName, pFile))!=SQLITE_OK - ){ - osCloseHandle(h); - sqlite3_free(zConverted); - sqlite3_free(zTmpname); - OSTRACE(("OPEN-CE-LOCK name=%s, rc=%s\n", zName, sqlite3ErrName(rc))); - return rc; + { + if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB + && ((pAppData==NULL) || !pAppData->bNoLock) + && (rc = winceCreateLock(zName, pFile))!=SQLITE_OK + ){ + osCloseHandle(h); + sqlite3_free(zConverted); + sqlite3_free(zTmpname); + OSTRACE(("OPEN-CE-LOCK name=%s, rc=%s\n", zName, sqlite3ErrName(rc))); + return rc; + } } if( isTemp ){ pFile->zDeleteOnClose = zConverted; @@ -35963,7 +42735,7 @@ static int winOpen( } sqlite3_free(zTmpname); - pFile->pMethod = &winIoMethod; + pFile->pMethod = pAppData ? pAppData->pMethod : &winIoMethod; pFile->pVfs = pVfs; pFile->h = h; if( isReadonly ){ @@ -36017,7 +42789,7 @@ static int winDelete( zConverted = winConvertFromUtf8Filename(zFilename); if( zConverted==0 ){ OSTRACE(("DELETE name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename)); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( osIsNT() ){ do { @@ -36096,7 +42868,7 @@ static int winDelete( if( rc && rc!=SQLITE_IOERR_DELETE_NOENT ){ rc = winLogError(SQLITE_IOERR_DELETE, lastErrno, "winDelete", zFilename); }else{ - winLogIoerr(cnt); + winLogIoerr(cnt, __LINE__); } sqlite3_free(zConverted); OSTRACE(("DELETE name=%s, rc=%s\n", zFilename, sqlite3ErrName(rc))); @@ -36125,28 +42897,28 @@ static int winAccess( zConverted = winConvertFromUtf8Filename(zFilename); if( zConverted==0 ){ OSTRACE(("ACCESS name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename)); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( osIsNT() ){ int cnt = 0; WIN32_FILE_ATTRIBUTE_DATA sAttrData; memset(&sAttrData, 0, sizeof(sAttrData)); while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted, - GetFileExInfoStandard, + GetFileExInfoStandard, &sAttrData)) && winRetryIoerr(&cnt, &lastErrno) ){} if( rc ){ /* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file ** as if it does not exist. */ if( flags==SQLITE_ACCESS_EXISTS - && sAttrData.nFileSizeHigh==0 + && sAttrData.nFileSizeHigh==0 && sAttrData.nFileSizeLow==0 ){ attr = INVALID_FILE_ATTRIBUTES; }else{ attr = sAttrData.dwFileAttributes; } }else{ - winLogIoerr(cnt); + winLogIoerr(cnt, __LINE__); if( lastErrno!=ERROR_FILE_NOT_FOUND && lastErrno!=ERROR_PATH_NOT_FOUND ){ sqlite3_free(zConverted); return winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess", @@ -36238,7 +43010,19 @@ static int winFullPathname( int nFull, /* Size of output buffer in bytes */ char *zFull /* Output buffer */ ){ - +#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && !defined(__CYGWIN__) + DWORD nByte; + void *zConverted; + char *zOut; +#endif + + /* If this path name begins with "/X:", where "X" is any alphabetic + ** character, discard the initial "/" from the pathname. + */ + if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){ + zRelative++; + } + #if defined(__CYGWIN__) SimulateIOError( return SQLITE_ERROR ); UNUSED_PARAMETER(nFull); @@ -36252,7 +43036,7 @@ static int winFullPathname( */ char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 ); if( !zOut ){ - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( cygwin_conv_path( (osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A) | @@ -36264,7 +43048,7 @@ static int winFullPathname( char *zUtf8 = winConvertToUtf8Filename(zOut); if( !zUtf8 ){ sqlite3_free(zOut); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%c%s", sqlite3_data_directory, winGetDirSep(), zUtf8); @@ -36274,7 +43058,7 @@ static int winFullPathname( }else{ char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 ); if( !zOut ){ - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( cygwin_conv_path( (osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A), @@ -36286,7 +43070,7 @@ static int winFullPathname( char *zUtf8 = winConvertToUtf8Filename(zOut); if( !zUtf8 ){ sqlite3_free(zOut); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zUtf8); sqlite3_free(zUtf8); @@ -36316,17 +43100,6 @@ static int winFullPathname( #endif #if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && !defined(__CYGWIN__) - DWORD nByte; - void *zConverted; - char *zOut; - - /* If this path name begins with "/X:", where "X" is any alphabetic - ** character, discard the initial "/" from the pathname. - */ - if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){ - zRelative++; - } - /* It's odd to simulate an io-error here, but really this is just ** using the io-error infrastructure to test that SQLite handles this ** function failing. This function could fail if, for example, the @@ -36346,7 +43119,7 @@ static int winFullPathname( } zConverted = winConvertFromUtf8Filename(zRelative); if( zConverted==0 ){ - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } if( osIsNT() ){ LPWSTR zTemp; @@ -36360,7 +43133,7 @@ static int winFullPathname( zTemp = sqlite3MallocZero( nByte*sizeof(zTemp[0]) ); if( zTemp==0 ){ sqlite3_free(zConverted); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } nByte = osGetFullPathNameW((LPCWSTR)zConverted, nByte, zTemp, 0); if( nByte==0 ){ @@ -36386,7 +43159,7 @@ static int winFullPathname( zTemp = sqlite3MallocZero( nByte*sizeof(zTemp[0]) ); if( zTemp==0 ){ sqlite3_free(zConverted); - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } nByte = osGetFullPathNameA((char*)zConverted, nByte, zTemp, 0); if( nByte==0 ){ @@ -36396,7 +43169,7 @@ static int winFullPathname( "winFullPathname4", zRelative); } sqlite3_free(zConverted); - zOut = sqlite3_win32_mbcs_to_utf8(zTemp); + zOut = winMbcsToUtf8(zTemp, osAreFileApisANSI()); sqlite3_free(zTemp); } #endif @@ -36405,7 +43178,7 @@ static int winFullPathname( sqlite3_free(zOut); return SQLITE_OK; }else{ - return SQLITE_IOERR_NOMEM; + return SQLITE_IOERR_NOMEM_BKPT; } #endif } @@ -36415,15 +43188,29 @@ static int winFullPathname( ** Interfaces for opening a shared library, finding entry points ** within the shared library, and closing the shared library. */ -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){ HANDLE h; +#if defined(__CYGWIN__) + int nFull = pVfs->mxPathname+1; + char *zFull = sqlite3MallocZero( nFull ); + void *zConverted = 0; + if( zFull==0 ){ + OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0)); + return 0; + } + if( winFullPathname(pVfs, zFilename, nFull, zFull)!=SQLITE_OK ){ + sqlite3_free(zFull); + OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0)); + return 0; + } + zConverted = winConvertFromUtf8Filename(zFull); + sqlite3_free(zFull); +#else void *zConverted = winConvertFromUtf8Filename(zFilename); UNUSED_PARAMETER(pVfs); +#endif if( zConverted==0 ){ + OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0)); return 0; } if( osIsNT() ){ @@ -36438,6 +43225,7 @@ static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){ h = osLoadLibraryA((char*)zConverted); } #endif + OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)h)); sqlite3_free(zConverted); return (void*)h; } @@ -36446,12 +43234,17 @@ static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){ winGetLastErrorMsg(osGetLastError(), nBuf, zBufOut); } static void (*winDlSym(sqlite3_vfs *pVfs,void *pH,const char *zSym))(void){ + FARPROC proc; UNUSED_PARAMETER(pVfs); - return (void(*)(void))osGetProcAddressA((HANDLE)pH, zSym); + proc = osGetProcAddressA((HANDLE)pH, zSym); + OSTRACE(("DLSYM handle=%p, symbol=%s, address=%p\n", + (void*)pH, zSym, (void*)proc)); + return (void(*)(void))proc; } static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){ UNUSED_PARAMETER(pVfs); osFreeLibrary((HANDLE)pHandle); + OSTRACE(("DLCLOSE handle=%p\n", (void*)pHandle)); } #else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */ #define winDlOpen 0 @@ -36460,49 +43253,85 @@ static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){ #define winDlClose 0 #endif +/* State information for the randomness gatherer. */ +typedef struct EntropyGatherer EntropyGatherer; +struct EntropyGatherer { + unsigned char *a; /* Gather entropy into this buffer */ + int na; /* Size of a[] in bytes */ + int i; /* XOR next input into a[i] */ + int nXor; /* Number of XOR operations done */ +}; + +#if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) +/* Mix sz bytes of entropy into p. */ +static void xorMemory(EntropyGatherer *p, unsigned char *x, int sz){ + int j, k; + for(j=0, k=p->i; ja[k++] ^= x[j]; + if( k>=p->na ) k = 0; + } + p->i = k; + p->nXor += sz; +} +#endif /* !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) */ /* ** Write up to nBuf bytes of randomness into zBuf. */ static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ - int n = 0; +#if defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS) UNUSED_PARAMETER(pVfs); -#if defined(SQLITE_TEST) - n = nBuf; memset(zBuf, 0, nBuf); + return nBuf; #else - if( sizeof(SYSTEMTIME)<=nBuf-n ){ + EntropyGatherer e; + UNUSED_PARAMETER(pVfs); + memset(zBuf, 0, nBuf); +#if defined(_MSC_VER) && _MSC_VER>=1400 && !SQLITE_OS_WINCE + rand_s((unsigned int*)zBuf); /* rand_s() is not available with MinGW */ +#endif /* defined(_MSC_VER) && _MSC_VER>=1400 */ + e.a = (unsigned char*)zBuf; + e.na = nBuf; + e.nXor = 0; + e.i = 0; + { SYSTEMTIME x; osGetSystemTime(&x); - memcpy(&zBuf[n], &x, sizeof(x)); - n += sizeof(x); + xorMemory(&e, (unsigned char*)&x, sizeof(SYSTEMTIME)); } - if( sizeof(DWORD)<=nBuf-n ){ + { DWORD pid = osGetCurrentProcessId(); - memcpy(&zBuf[n], &pid, sizeof(pid)); - n += sizeof(pid); + xorMemory(&e, (unsigned char*)&pid, sizeof(DWORD)); } #if SQLITE_OS_WINRT - if( sizeof(ULONGLONG)<=nBuf-n ){ + { ULONGLONG cnt = osGetTickCount64(); - memcpy(&zBuf[n], &cnt, sizeof(cnt)); - n += sizeof(cnt); + xorMemory(&e, (unsigned char*)&cnt, sizeof(ULONGLONG)); } #else - if( sizeof(DWORD)<=nBuf-n ){ + { DWORD cnt = osGetTickCount(); - memcpy(&zBuf[n], &cnt, sizeof(cnt)); - n += sizeof(cnt); + xorMemory(&e, (unsigned char*)&cnt, sizeof(DWORD)); } -#endif - if( sizeof(LARGE_INTEGER)<=nBuf-n ){ +#endif /* SQLITE_OS_WINRT */ + { LARGE_INTEGER i; osQueryPerformanceCounter(&i); - memcpy(&zBuf[n], &i, sizeof(i)); - n += sizeof(i); + xorMemory(&e, (unsigned char*)&i, sizeof(LARGE_INTEGER)); } -#endif - return n; +#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID + { + UUID id; + memset(&id, 0, sizeof(UUID)); + osUuidCreate(&id); + xorMemory(&e, (unsigned char*)&id, sizeof(UUID)); + memset(&id, 0, sizeof(UUID)); + osUuidCreateSequential(&id); + xorMemory(&e, (unsigned char*)&id, sizeof(UUID)); + } +#endif /* !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID */ + return e.nXor>nBuf ? nBuf : e.nXor; +#endif /* defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS) */ } @@ -36531,12 +43360,12 @@ SQLITE_API int sqlite3_current_time = 0; /* Fake system time in seconds since 1 ** epoch of noon in Greenwich on November 24, 4714 B.C according to the ** proleptic Gregorian calendar. ** -** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date +** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date ** cannot be found. */ static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){ - /* FILETIME structure is a 64-bit value representing the number of - 100-nanosecond intervals since January 1, 1601 (= JD 2305813.5). + /* FILETIME structure is a 64-bit value representing the number of + 100-nanosecond intervals since January 1, 1601 (= JD 2305813.5). */ FILETIME ft; static const sqlite3_int64 winFiletimeEpoch = 23058135*(sqlite3_int64)8640000; @@ -36544,7 +43373,7 @@ static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){ static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; #endif /* 2^32 - to avoid use of LL and warnings in gcc */ - static const sqlite3_int64 max32BitValue = + static const sqlite3_int64 max32BitValue = (sqlite3_int64)2000000000 + (sqlite3_int64)2000000000 + (sqlite3_int64)294967296; @@ -36560,7 +43389,7 @@ static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){ #endif *piNow = winFiletimeEpoch + - ((((sqlite3_int64)ft.dwHighDateTime)*max32BitValue) + + ((((sqlite3_int64)ft.dwHighDateTime)*max32BitValue) + (sqlite3_int64)ft.dwLowDateTime)/(sqlite3_int64)10000; #ifdef SQLITE_TEST @@ -36618,8 +43447,10 @@ static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){ ** sqlite3_errmsg(), possibly making IO errors easier to debug. */ static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ + DWORD e = osGetLastError(); UNUSED_PARAMETER(pVfs); - return winGetLastErrorMsg(osGetLastError(), nBuf, zBuf); + if( nBuf>0 ) winGetLastErrorMsg(e, nBuf, zBuf); + return e; } /* @@ -36627,59 +43458,109 @@ static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ */ SQLITE_API int sqlite3_os_init(void){ static sqlite3_vfs winVfs = { - 3, /* iVersion */ - sizeof(winFile), /* szOsFile */ + 3, /* iVersion */ + sizeof(winFile), /* szOsFile */ SQLITE_WIN32_MAX_PATH_BYTES, /* mxPathname */ - 0, /* pNext */ - "win32", /* zName */ - 0, /* pAppData */ - winOpen, /* xOpen */ - winDelete, /* xDelete */ - winAccess, /* xAccess */ - winFullPathname, /* xFullPathname */ - winDlOpen, /* xDlOpen */ - winDlError, /* xDlError */ - winDlSym, /* xDlSym */ - winDlClose, /* xDlClose */ - winRandomness, /* xRandomness */ - winSleep, /* xSleep */ - winCurrentTime, /* xCurrentTime */ - winGetLastError, /* xGetLastError */ - winCurrentTimeInt64, /* xCurrentTimeInt64 */ - winSetSystemCall, /* xSetSystemCall */ - winGetSystemCall, /* xGetSystemCall */ - winNextSystemCall, /* xNextSystemCall */ + 0, /* pNext */ + "win32", /* zName */ + &winAppData, /* pAppData */ + winOpen, /* xOpen */ + winDelete, /* xDelete */ + winAccess, /* xAccess */ + winFullPathname, /* xFullPathname */ + winDlOpen, /* xDlOpen */ + winDlError, /* xDlError */ + winDlSym, /* xDlSym */ + winDlClose, /* xDlClose */ + winRandomness, /* xRandomness */ + winSleep, /* xSleep */ + winCurrentTime, /* xCurrentTime */ + winGetLastError, /* xGetLastError */ + winCurrentTimeInt64, /* xCurrentTimeInt64 */ + winSetSystemCall, /* xSetSystemCall */ + winGetSystemCall, /* xGetSystemCall */ + winNextSystemCall, /* xNextSystemCall */ }; #if defined(SQLITE_WIN32_HAS_WIDE) static sqlite3_vfs winLongPathVfs = { - 3, /* iVersion */ - sizeof(winFile), /* szOsFile */ + 3, /* iVersion */ + sizeof(winFile), /* szOsFile */ SQLITE_WINNT_MAX_PATH_BYTES, /* mxPathname */ - 0, /* pNext */ - "win32-longpath", /* zName */ - 0, /* pAppData */ - winOpen, /* xOpen */ - winDelete, /* xDelete */ - winAccess, /* xAccess */ - winFullPathname, /* xFullPathname */ - winDlOpen, /* xDlOpen */ - winDlError, /* xDlError */ - winDlSym, /* xDlSym */ - winDlClose, /* xDlClose */ - winRandomness, /* xRandomness */ - winSleep, /* xSleep */ - winCurrentTime, /* xCurrentTime */ - winGetLastError, /* xGetLastError */ - winCurrentTimeInt64, /* xCurrentTimeInt64 */ - winSetSystemCall, /* xSetSystemCall */ - winGetSystemCall, /* xGetSystemCall */ - winNextSystemCall, /* xNextSystemCall */ + 0, /* pNext */ + "win32-longpath", /* zName */ + &winAppData, /* pAppData */ + winOpen, /* xOpen */ + winDelete, /* xDelete */ + winAccess, /* xAccess */ + winFullPathname, /* xFullPathname */ + winDlOpen, /* xDlOpen */ + winDlError, /* xDlError */ + winDlSym, /* xDlSym */ + winDlClose, /* xDlClose */ + winRandomness, /* xRandomness */ + winSleep, /* xSleep */ + winCurrentTime, /* xCurrentTime */ + winGetLastError, /* xGetLastError */ + winCurrentTimeInt64, /* xCurrentTimeInt64 */ + winSetSystemCall, /* xSetSystemCall */ + winGetSystemCall, /* xGetSystemCall */ + winNextSystemCall, /* xNextSystemCall */ + }; +#endif + static sqlite3_vfs winNolockVfs = { + 3, /* iVersion */ + sizeof(winFile), /* szOsFile */ + SQLITE_WIN32_MAX_PATH_BYTES, /* mxPathname */ + 0, /* pNext */ + "win32-none", /* zName */ + &winNolockAppData, /* pAppData */ + winOpen, /* xOpen */ + winDelete, /* xDelete */ + winAccess, /* xAccess */ + winFullPathname, /* xFullPathname */ + winDlOpen, /* xDlOpen */ + winDlError, /* xDlError */ + winDlSym, /* xDlSym */ + winDlClose, /* xDlClose */ + winRandomness, /* xRandomness */ + winSleep, /* xSleep */ + winCurrentTime, /* xCurrentTime */ + winGetLastError, /* xGetLastError */ + winCurrentTimeInt64, /* xCurrentTimeInt64 */ + winSetSystemCall, /* xSetSystemCall */ + winGetSystemCall, /* xGetSystemCall */ + winNextSystemCall, /* xNextSystemCall */ + }; +#if defined(SQLITE_WIN32_HAS_WIDE) + static sqlite3_vfs winLongPathNolockVfs = { + 3, /* iVersion */ + sizeof(winFile), /* szOsFile */ + SQLITE_WINNT_MAX_PATH_BYTES, /* mxPathname */ + 0, /* pNext */ + "win32-longpath-none", /* zName */ + &winNolockAppData, /* pAppData */ + winOpen, /* xOpen */ + winDelete, /* xDelete */ + winAccess, /* xAccess */ + winFullPathname, /* xFullPathname */ + winDlOpen, /* xDlOpen */ + winDlError, /* xDlError */ + winDlSym, /* xDlSym */ + winDlClose, /* xDlClose */ + winRandomness, /* xRandomness */ + winSleep, /* xSleep */ + winCurrentTime, /* xCurrentTime */ + winGetLastError, /* xGetLastError */ + winCurrentTimeInt64, /* xCurrentTimeInt64 */ + winSetSystemCall, /* xSetSystemCall */ + winGetSystemCall, /* xGetSystemCall */ + winNextSystemCall, /* xNextSystemCall */ }; #endif /* Double-check that the aSyscall[] array has been constructed ** correctly. See ticket [bb3a86e890c8e96ab] */ - assert( ArraySize(aSyscall)==76 ); + assert( ArraySize(aSyscall)==80 ); /* get memory map allocation granularity */ memset(&winSysInfo, 0, sizeof(SYSTEM_INFO)); @@ -36697,10 +43578,16 @@ SQLITE_API int sqlite3_os_init(void){ sqlite3_vfs_register(&winLongPathVfs, 0); #endif - return SQLITE_OK; + sqlite3_vfs_register(&winNolockVfs, 0); + +#if defined(SQLITE_WIN32_HAS_WIDE) + sqlite3_vfs_register(&winLongPathNolockVfs, 0); +#endif + + return SQLITE_OK; } -SQLITE_API int sqlite3_os_end(void){ +SQLITE_API int sqlite3_os_end(void){ #if SQLITE_OS_WINRT if( sleepObj!=NULL ){ osCloseHandle(sleepObj); @@ -36750,13 +43637,15 @@ SQLITE_API int sqlite3_os_end(void){ ** start of a transaction, and is thus usually less than a few thousand, ** but can be as large as 2 billion for a really big database. */ +/* #include "sqliteInt.h" */ /* Size of the Bitvec structure in bytes. */ #define BITVEC_SZ 512 /* Round the union size down to the nearest pointer boundary, since that's how ** it will be aligned within the Bitvec struct. */ -#define BITVEC_USIZE (((BITVEC_SZ-(3*sizeof(u32)))/sizeof(Bitvec*))*sizeof(Bitvec*)) +#define BITVEC_USIZE \ + (((BITVEC_SZ-(3*sizeof(u32)))/sizeof(Bitvec*))*sizeof(Bitvec*)) /* Type of the array "element" for the bitmap representation. ** Should be a power of 2, and ideally, evenly divide into BITVEC_USIZE. @@ -36841,10 +43730,10 @@ SQLITE_PRIVATE Bitvec *sqlite3BitvecCreate(u32 iSize){ ** If p is NULL (if the bitmap has not been created) or if ** i is out of range, then return false. */ -SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec *p, u32 i){ - if( p==0 ) return 0; - if( i>p->iSize || i==0 ) return 0; +SQLITE_PRIVATE int sqlite3BitvecTestNotNull(Bitvec *p, u32 i){ + assert( p!=0 ); i--; + if( i>=p->iSize ) return 0; while( p->iDivisor ){ u32 bin = i/p->iDivisor; i = i%p->iDivisor; @@ -36864,6 +43753,9 @@ SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec *p, u32 i){ return 0; } } +SQLITE_PRIVATE int sqlite3BitvecTest(Bitvec *p, u32 i){ + return p!=0 && sqlite3BitvecTestNotNull(p,i); +} /* ** Set the i-th bit. Return 0 on success and an error code if @@ -36888,7 +43780,7 @@ SQLITE_PRIVATE int sqlite3BitvecSet(Bitvec *p, u32 i){ i = i%p->iDivisor; if( p->u.apSub[bin]==0 ){ p->u.apSub[bin] = sqlite3BitvecCreate( p->iDivisor ); - if( p->u.apSub[bin]==0 ) return SQLITE_NOMEM; + if( p->u.apSub[bin]==0 ) return SQLITE_NOMEM_BKPT; } p = p->u.apSub[bin]; } @@ -36923,7 +43815,7 @@ bitvec_set_rehash: int rc; u32 *aiValues = sqlite3StackAllocRaw(0, sizeof(p->u.aHash)); if( aiValues==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; }else{ memcpy(aiValues, p->u.aHash, sizeof(p->u.aHash)); memset(p->u.apSub, 0, sizeof(p->u.apSub)); @@ -37004,7 +43896,7 @@ SQLITE_PRIVATE u32 sqlite3BitvecSize(Bitvec *p){ return p->iSize; } -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifndef SQLITE_UNTESTABLE /* ** Let V[] be an array of unsigned characters sufficient to hold ** up to N bits. Let I be an integer between 0 and N. 0<=IpDirtyNext. +** PCache.pDirty points to the first (newest) element in the list and +** pDirtyTail to the last (oldest). +** +** The PCache.pSynced variable is used to optimize searching for a dirty +** page to eject from the cache mid-transaction. It is better to eject +** a page that does not require a journal sync than one that does. +** Therefore, pSynced is maintained to that it *almost* always points +** to either the oldest page in the pDirty/pDirtyTail list that has a +** clear PGHDR_NEED_SYNC flag or to a page that is older than this one +** (so that the right page to eject can be found by following pDirtyPrev +** pointers). */ struct PCache { PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */ PgHdr *pSynced; /* Last synced page in dirty page list */ - int nRef; /* Number of referenced pages */ + int nRefSum; /* Sum of ref counts over all pages */ int szCache; /* Configured cache size */ + int szSpill; /* Size before spilling occurs */ int szPage; /* Size of every page in this cache */ int szExtra; /* Size of extra space for each page */ - int bPurgeable; /* True if pages are on backing store */ + u8 bPurgeable; /* True if pages are on backing store */ + u8 eCreate; /* eCreate value for for xFetch() */ int (*xStress)(void*,PgHdr*); /* Call to try make a page clean */ void *pStress; /* Argument to xStress */ sqlite3_pcache *pCache; /* Pluggable cache module */ - PgHdr *pPage1; /* Reference to page 1 */ }; +/********************************** Test and Debug Logic **********************/ /* -** Some of the assert() macros in this code are too expensive to run -** even during normal debugging. Use them only rarely on long-running -** tests. Enable the expensive asserts using the -** -DSQLITE_ENABLE_EXPENSIVE_ASSERT=1 compile-time option. +** Debug tracing macros. Enable by by changing the "0" to "1" and +** recompiling. +** +** When sqlite3PcacheTrace is 1, single line trace messages are issued. +** When sqlite3PcacheTrace is 2, a dump of the pcache showing all cache entries +** is displayed for many operations, resulting in a lot of output. */ -#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT -# define expensive_assert(X) assert(X) -#else -# define expensive_assert(X) +#if defined(SQLITE_DEBUG) && 0 + int sqlite3PcacheTrace = 2; /* 0: off 1: simple 2: cache dumps */ + int sqlite3PcacheMxDump = 9999; /* Max cache entries for pcacheDump() */ +# define pcacheTrace(X) if(sqlite3PcacheTrace){sqlite3DebugPrintf X;} + void pcacheDump(PCache *pCache){ + int N; + int i, j; + sqlite3_pcache_page *pLower; + PgHdr *pPg; + unsigned char *a; + + if( sqlite3PcacheTrace<2 ) return; + if( pCache->pCache==0 ) return; + N = sqlite3PcachePagecount(pCache); + if( N>sqlite3PcacheMxDump ) N = sqlite3PcacheMxDump; + for(i=1; i<=N; i++){ + pLower = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, i, 0); + if( pLower==0 ) continue; + pPg = (PgHdr*)pLower->pExtra; + printf("%3d: nRef %2d flgs %02x data ", i, pPg->nRef, pPg->flags); + a = (unsigned char *)pLower->pBuf; + for(j=0; j<12; j++) printf("%02x", a[j]); + printf("\n"); + if( pPg->pPage==0 ){ + sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, pLower, 0); + } + } + } + #else +# define pcacheTrace(X) +# define pcacheDump(X) #endif +/* +** Check invariants on a PgHdr entry. Return true if everything is OK. +** Return false if any invariant is violated. +** +** This routine is for use inside of assert() statements only. For +** example: +** +** assert( sqlite3PcachePageSanity(pPg) ); +*/ +#if SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3PcachePageSanity(PgHdr *pPg){ + PCache *pCache; + assert( pPg!=0 ); + assert( pPg->pgno>0 || pPg->pPager==0 ); /* Page number is 1 or more */ + pCache = pPg->pCache; + assert( pCache!=0 ); /* Every page has an associated PCache */ + if( pPg->flags & PGHDR_CLEAN ){ + assert( (pPg->flags & PGHDR_DIRTY)==0 );/* Cannot be both CLEAN and DIRTY */ + assert( pCache->pDirty!=pPg ); /* CLEAN pages not on dirty list */ + assert( pCache->pDirtyTail!=pPg ); + } + /* WRITEABLE pages must also be DIRTY */ + if( pPg->flags & PGHDR_WRITEABLE ){ + assert( pPg->flags & PGHDR_DIRTY ); /* WRITEABLE implies DIRTY */ + } + /* NEED_SYNC can be set independently of WRITEABLE. This can happen, + ** for example, when using the sqlite3PagerDontWrite() optimization: + ** (1) Page X is journalled, and gets WRITEABLE and NEED_SEEK. + ** (2) Page X moved to freelist, WRITEABLE is cleared + ** (3) Page X reused, WRITEABLE is set again + ** If NEED_SYNC had been cleared in step 2, then it would not be reset + ** in step 3, and page might be written into the database without first + ** syncing the rollback journal, which might cause corruption on a power + ** loss. + ** + ** Another example is when the database page size is smaller than the + ** disk sector size. When any page of a sector is journalled, all pages + ** in that sector are marked NEED_SYNC even if they are still CLEAN, just + ** in case they are later modified, since all pages in the same sector + ** must be journalled and synced before any of those pages can be safely + ** written. + */ + return 1; +} +#endif /* SQLITE_DEBUG */ + + /********************************** Linked List Management ********************/ -#if !defined(NDEBUG) && defined(SQLITE_ENABLE_EXPENSIVE_ASSERT) -/* -** Check that the pCache->pSynced variable is set correctly. If it -** is not, either fail an assert or return zero. Otherwise, return -** non-zero. This is only used in debugging builds, as follows: -** -** expensive_assert( pcacheCheckSynced(pCache) ); -*/ -static int pcacheCheckSynced(PCache *pCache){ - PgHdr *p; - for(p=pCache->pDirtyTail; p!=pCache->pSynced; p=p->pDirtyPrev){ - assert( p->nRef || (p->flags&PGHDR_NEED_SYNC) ); - } - return (p==0 || p->nRef || (p->flags&PGHDR_NEED_SYNC)==0); -} -#endif /* !NDEBUG && SQLITE_ENABLE_EXPENSIVE_ASSERT */ +/* Allowed values for second argument to pcacheManageDirtyList() */ +#define PCACHE_DIRTYLIST_REMOVE 1 /* Remove pPage from dirty list */ +#define PCACHE_DIRTYLIST_ADD 2 /* Add pPage to the dirty list */ +#define PCACHE_DIRTYLIST_FRONT 3 /* Move pPage to the front of the list */ /* -** Remove page pPage from the list of dirty pages. +** Manage pPage's participation on the dirty list. Bits of the addRemove +** argument determines what operation to do. The 0x01 bit means first +** remove pPage from the dirty list. The 0x02 means add pPage back to +** the dirty list. Doing both moves pPage to the front of the dirty list. */ -static void pcacheRemoveFromDirtyList(PgHdr *pPage){ +static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){ PCache *p = pPage->pCache; - assert( pPage->pDirtyNext || pPage==p->pDirtyTail ); - assert( pPage->pDirtyPrev || pPage==p->pDirty ); - - /* Update the PCache1.pSynced variable if necessary. */ - if( p->pSynced==pPage ){ - PgHdr *pSynced = pPage->pDirtyPrev; - while( pSynced && (pSynced->flags&PGHDR_NEED_SYNC) ){ - pSynced = pSynced->pDirtyPrev; + pcacheTrace(("%p.DIRTYLIST.%s %d\n", p, + addRemove==1 ? "REMOVE" : addRemove==2 ? "ADD" : "FRONT", + pPage->pgno)); + if( addRemove & PCACHE_DIRTYLIST_REMOVE ){ + assert( pPage->pDirtyNext || pPage==p->pDirtyTail ); + assert( pPage->pDirtyPrev || pPage==p->pDirty ); + + /* Update the PCache1.pSynced variable if necessary. */ + if( p->pSynced==pPage ){ + p->pSynced = pPage->pDirtyPrev; } - p->pSynced = pSynced; + + if( pPage->pDirtyNext ){ + pPage->pDirtyNext->pDirtyPrev = pPage->pDirtyPrev; + }else{ + assert( pPage==p->pDirtyTail ); + p->pDirtyTail = pPage->pDirtyPrev; + } + if( pPage->pDirtyPrev ){ + pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext; + }else{ + /* If there are now no dirty pages in the cache, set eCreate to 2. + ** This is an optimization that allows sqlite3PcacheFetch() to skip + ** searching for a dirty page to eject from the cache when it might + ** otherwise have to. */ + assert( pPage==p->pDirty ); + p->pDirty = pPage->pDirtyNext; + assert( p->bPurgeable || p->eCreate==2 ); + if( p->pDirty==0 ){ /*OPTIMIZATION-IF-TRUE*/ + assert( p->bPurgeable==0 || p->eCreate==1 ); + p->eCreate = 2; + } + } + pPage->pDirtyNext = 0; + pPage->pDirtyPrev = 0; } + if( addRemove & PCACHE_DIRTYLIST_ADD ){ + assert( pPage->pDirtyNext==0 && pPage->pDirtyPrev==0 && p->pDirty!=pPage ); + + pPage->pDirtyNext = p->pDirty; + if( pPage->pDirtyNext ){ + assert( pPage->pDirtyNext->pDirtyPrev==0 ); + pPage->pDirtyNext->pDirtyPrev = pPage; + }else{ + p->pDirtyTail = pPage; + if( p->bPurgeable ){ + assert( p->eCreate==2 ); + p->eCreate = 1; + } + } + p->pDirty = pPage; - if( pPage->pDirtyNext ){ - pPage->pDirtyNext->pDirtyPrev = pPage->pDirtyPrev; - }else{ - assert( pPage==p->pDirtyTail ); - p->pDirtyTail = pPage->pDirtyPrev; + /* If pSynced is NULL and this page has a clear NEED_SYNC flag, set + ** pSynced to point to it. Checking the NEED_SYNC flag is an + ** optimization, as if pSynced points to a page with the NEED_SYNC + ** flag set sqlite3PcacheFetchStress() searches through all newer + ** entries of the dirty-list for a page with NEED_SYNC clear anyway. */ + if( !p->pSynced + && 0==(pPage->flags&PGHDR_NEED_SYNC) /*OPTIMIZATION-IF-FALSE*/ + ){ + p->pSynced = pPage; + } } - if( pPage->pDirtyPrev ){ - pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext; - }else{ - assert( pPage==p->pDirty ); - p->pDirty = pPage->pDirtyNext; - } - pPage->pDirtyNext = 0; - pPage->pDirtyPrev = 0; - - expensive_assert( pcacheCheckSynced(p) ); -} - -/* -** Add page pPage to the head of the dirty list (PCache1.pDirty is set to -** pPage). -*/ -static void pcacheAddToDirtyList(PgHdr *pPage){ - PCache *p = pPage->pCache; - - assert( pPage->pDirtyNext==0 && pPage->pDirtyPrev==0 && p->pDirty!=pPage ); - - pPage->pDirtyNext = p->pDirty; - if( pPage->pDirtyNext ){ - assert( pPage->pDirtyNext->pDirtyPrev==0 ); - pPage->pDirtyNext->pDirtyPrev = pPage; - } - p->pDirty = pPage; - if( !p->pDirtyTail ){ - p->pDirtyTail = pPage; - } - if( !p->pSynced && 0==(pPage->flags&PGHDR_NEED_SYNC) ){ - p->pSynced = pPage; - } - expensive_assert( pcacheCheckSynced(p) ); + pcacheDump(p); } /* @@ -37250,12 +44246,27 @@ static void pcacheAddToDirtyList(PgHdr *pPage){ ** being used for an in-memory database, this function is a no-op. */ static void pcacheUnpin(PgHdr *p){ - PCache *pCache = p->pCache; - if( pCache->bPurgeable ){ - if( p->pgno==1 ){ - pCache->pPage1 = 0; - } - sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 0); + if( p->pCache->bPurgeable ){ + pcacheTrace(("%p.UNPIN %d\n", p->pCache, p->pgno)); + sqlite3GlobalConfig.pcache2.xUnpin(p->pCache->pCache, p->pPage, 0); + pcacheDump(p->pCache); + } +} + +/* +** Compute the number of pages of cache requested. p->szCache is the +** cache size requested by the "PRAGMA cache_size" statement. +*/ +static int numberOfCachePages(PCache *p){ + if( p->szCache>=0 ){ + /* IMPLEMENTATION-OF: R-42059-47211 If the argument N is positive then the + ** suggested cache size is set to N. */ + return p->szCache; + }else{ + /* IMPLEMENTATION-OF: R-61436-13639 If the argument N is negative, then + ** the number of cache pages is adjusted to use approximately abs(N*1024) + ** bytes of memory. */ + return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra)); } } @@ -37290,8 +44301,14 @@ SQLITE_PRIVATE int sqlite3PcacheSize(void){ return sizeof(PCache); } ** has already been allocated and is passed in as the p pointer. ** The caller discovers how much space needs to be allocated by ** calling sqlite3PcacheSize(). +** +** szExtra is some extra space allocated for each page. The first +** 8 bytes of the extra space will be zeroed as the page is allocated, +** but remaining content will be uninitialized. Though it is opaque +** to this module, the extra space really ends up being the MemPage +** structure in the pager. */ -SQLITE_PRIVATE void sqlite3PcacheOpen( +SQLITE_PRIVATE int sqlite3PcacheOpen( int szPage, /* Size of every page */ int szExtra, /* Extra space associated with each page */ int bPurgeable, /* True if pages are on backing store */ @@ -37300,85 +44317,126 @@ SQLITE_PRIVATE void sqlite3PcacheOpen( PCache *p /* Preallocated space for the PCache */ ){ memset(p, 0, sizeof(PCache)); - p->szPage = szPage; + p->szPage = 1; p->szExtra = szExtra; + assert( szExtra>=8 ); /* First 8 bytes will be zeroed */ p->bPurgeable = bPurgeable; + p->eCreate = 2; p->xStress = xStress; p->pStress = pStress; p->szCache = 100; + p->szSpill = 1; + pcacheTrace(("%p.OPEN szPage %d bPurgeable %d\n",p,szPage,bPurgeable)); + return sqlite3PcacheSetPageSize(p, szPage); } /* ** Change the page size for PCache object. The caller must ensure that there ** are no outstanding page references when this function is called. */ -SQLITE_PRIVATE void sqlite3PcacheSetPageSize(PCache *pCache, int szPage){ - assert( pCache->nRef==0 && pCache->pDirty==0 ); - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache); - pCache->pCache = 0; - pCache->pPage1 = 0; - } - pCache->szPage = szPage; -} - -/* -** Compute the number of pages of cache requested. -*/ -static int numberOfCachePages(PCache *p){ - if( p->szCache>=0 ){ - return p->szCache; - }else{ - return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra)); +SQLITE_PRIVATE int sqlite3PcacheSetPageSize(PCache *pCache, int szPage){ + assert( pCache->nRefSum==0 && pCache->pDirty==0 ); + if( pCache->szPage ){ + sqlite3_pcache *pNew; + pNew = sqlite3GlobalConfig.pcache2.xCreate( + szPage, pCache->szExtra + ROUND8(sizeof(PgHdr)), + pCache->bPurgeable + ); + if( pNew==0 ) return SQLITE_NOMEM_BKPT; + sqlite3GlobalConfig.pcache2.xCachesize(pNew, numberOfCachePages(pCache)); + if( pCache->pCache ){ + sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache); + } + pCache->pCache = pNew; + pCache->szPage = szPage; + pcacheTrace(("%p.PAGESIZE %d\n",pCache,szPage)); } + return SQLITE_OK; } /* ** Try to obtain a page from the cache. +** +** This routine returns a pointer to an sqlite3_pcache_page object if +** such an object is already in cache, or if a new one is created. +** This routine returns a NULL pointer if the object was not in cache +** and could not be created. +** +** The createFlags should be 0 to check for existing pages and should +** be 3 (not 1, but 3) to try to create a new page. +** +** If the createFlag is 0, then NULL is always returned if the page +** is not already in the cache. If createFlag is 1, then a new page +** is created only if that can be done without spilling dirty pages +** and without exceeding the cache size limit. +** +** The caller needs to invoke sqlite3PcacheFetchFinish() to properly +** initialize the sqlite3_pcache_page object and convert it into a +** PgHdr object. The sqlite3PcacheFetch() and sqlite3PcacheFetchFinish() +** routines are split this way for performance reasons. When separated +** they can both (usually) operate without having to push values to +** the stack on entry and pop them back off on exit, which saves a +** lot of pushing and popping. */ -SQLITE_PRIVATE int sqlite3PcacheFetch( +SQLITE_PRIVATE sqlite3_pcache_page *sqlite3PcacheFetch( PCache *pCache, /* Obtain the page from this cache */ Pgno pgno, /* Page number to obtain */ - int createFlag, /* If true, create page if it does not exist already */ - PgHdr **ppPage /* Write the page here */ + int createFlag /* If true, create page if it does not exist already */ ){ - sqlite3_pcache_page *pPage = 0; - PgHdr *pPgHdr = 0; int eCreate; + sqlite3_pcache_page *pRes; assert( pCache!=0 ); - assert( createFlag==1 || createFlag==0 ); - assert( pgno>0 ); + assert( pCache->pCache!=0 ); + assert( createFlag==3 || createFlag==0 ); + assert( pCache->eCreate==((pCache->bPurgeable && pCache->pDirty) ? 1 : 2) ); - /* If the pluggable cache (sqlite3_pcache*) has not been allocated, - ** allocate it now. + /* eCreate defines what to do if the page does not exist. + ** 0 Do not allocate a new page. (createFlag==0) + ** 1 Allocate a new page if doing so is inexpensive. + ** (createFlag==1 AND bPurgeable AND pDirty) + ** 2 Allocate a new page even it doing so is difficult. + ** (createFlag==1 AND !(bPurgeable AND pDirty) */ - if( !pCache->pCache && createFlag ){ - sqlite3_pcache *p; - p = sqlite3GlobalConfig.pcache2.xCreate( - pCache->szPage, pCache->szExtra + sizeof(PgHdr), pCache->bPurgeable - ); - if( !p ){ - return SQLITE_NOMEM; - } - sqlite3GlobalConfig.pcache2.xCachesize(p, numberOfCachePages(pCache)); - pCache->pCache = p; - } + eCreate = createFlag & pCache->eCreate; + assert( eCreate==0 || eCreate==1 || eCreate==2 ); + assert( createFlag==0 || pCache->eCreate==eCreate ); + assert( createFlag==0 || eCreate==1+(!pCache->bPurgeable||!pCache->pDirty) ); + pRes = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, eCreate); + pcacheTrace(("%p.FETCH %d%s (result: %p)\n",pCache,pgno, + createFlag?" create":"",pRes)); + return pRes; +} - eCreate = createFlag * (1 + (!pCache->bPurgeable || !pCache->pDirty)); - if( pCache->pCache ){ - pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, eCreate); - } - - if( !pPage && eCreate==1 ){ - PgHdr *pPg; +/* +** If the sqlite3PcacheFetch() routine is unable to allocate a new +** page because no clean pages are available for reuse and the cache +** size limit has been reached, then this routine can be invoked to +** try harder to allocate a page. This routine might invoke the stress +** callback to spill dirty pages to the journal. It will then try to +** allocate the new page and will only fail to allocate a new page on +** an OOM error. +** +** This routine should be invoked only after sqlite3PcacheFetch() fails. +*/ +SQLITE_PRIVATE int sqlite3PcacheFetchStress( + PCache *pCache, /* Obtain the page from this cache */ + Pgno pgno, /* Page number to obtain */ + sqlite3_pcache_page **ppPage /* Write result here */ +){ + PgHdr *pPg; + if( pCache->eCreate==2 ) return 0; + if( sqlite3PcachePagecount(pCache)>pCache->szSpill ){ /* Find a dirty page to write-out and recycle. First try to find a ** page that does not require a journal-sync (one with PGHDR_NEED_SYNC ** cleared), but if that is not possible settle for any other ** unreferenced dirty page. - */ - expensive_assert( pcacheCheckSynced(pCache) ); + ** + ** If the LRU page in the dirty list that has a clear PGHDR_NEED_SYNC + ** flag is currently referenced, then the following may leave pSynced + ** set incorrectly (pointing to other than the LRU page with NEED_SYNC + ** cleared). This is Ok, as pSynced is just an optimization. */ for(pPg=pCache->pSynced; pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC)); pPg=pPg->pDirtyPrev @@ -37394,62 +44452,90 @@ SQLITE_PRIVATE int sqlite3PcacheFetch( "spill page %d making room for %d - cache used: %d/%d", pPg->pgno, pgno, sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache), - numberOfCachePages(pCache)); + numberOfCachePages(pCache)); #endif + pcacheTrace(("%p.SPILL %d\n",pCache,pPg->pgno)); rc = pCache->xStress(pCache->pStress, pPg); + pcacheDump(pCache); if( rc!=SQLITE_OK && rc!=SQLITE_BUSY ){ return rc; } } - - pPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, 2); } + *ppPage = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache, pgno, 2); + return *ppPage==0 ? SQLITE_NOMEM_BKPT : SQLITE_OK; +} - if( pPage ){ - pPgHdr = (PgHdr *)pPage->pExtra; +/* +** This is a helper routine for sqlite3PcacheFetchFinish() +** +** In the uncommon case where the page being fetched has not been +** initialized, this routine is invoked to do the initialization. +** This routine is broken out into a separate function since it +** requires extra stack manipulation that can be avoided in the common +** case. +*/ +static SQLITE_NOINLINE PgHdr *pcacheFetchFinishWithInit( + PCache *pCache, /* Obtain the page from this cache */ + Pgno pgno, /* Page number obtained */ + sqlite3_pcache_page *pPage /* Page obtained by prior PcacheFetch() call */ +){ + PgHdr *pPgHdr; + assert( pPage!=0 ); + pPgHdr = (PgHdr*)pPage->pExtra; + assert( pPgHdr->pPage==0 ); + memset(&pPgHdr->pDirty, 0, sizeof(PgHdr) - offsetof(PgHdr,pDirty)); + pPgHdr->pPage = pPage; + pPgHdr->pData = pPage->pBuf; + pPgHdr->pExtra = (void *)&pPgHdr[1]; + memset(pPgHdr->pExtra, 0, 8); + pPgHdr->pCache = pCache; + pPgHdr->pgno = pgno; + pPgHdr->flags = PGHDR_CLEAN; + return sqlite3PcacheFetchFinish(pCache,pgno,pPage); +} - if( !pPgHdr->pPage ){ - memset(pPgHdr, 0, sizeof(PgHdr)); - pPgHdr->pPage = pPage; - pPgHdr->pData = pPage->pBuf; - pPgHdr->pExtra = (void *)&pPgHdr[1]; - memset(pPgHdr->pExtra, 0, pCache->szExtra); - pPgHdr->pCache = pCache; - pPgHdr->pgno = pgno; - } - assert( pPgHdr->pCache==pCache ); - assert( pPgHdr->pgno==pgno ); - assert( pPgHdr->pData==pPage->pBuf ); - assert( pPgHdr->pExtra==(void *)&pPgHdr[1] ); +/* +** This routine converts the sqlite3_pcache_page object returned by +** sqlite3PcacheFetch() into an initialized PgHdr object. This routine +** must be called after sqlite3PcacheFetch() in order to get a usable +** result. +*/ +SQLITE_PRIVATE PgHdr *sqlite3PcacheFetchFinish( + PCache *pCache, /* Obtain the page from this cache */ + Pgno pgno, /* Page number obtained */ + sqlite3_pcache_page *pPage /* Page obtained by prior PcacheFetch() call */ +){ + PgHdr *pPgHdr; - if( 0==pPgHdr->nRef ){ - pCache->nRef++; - } - pPgHdr->nRef++; - if( pgno==1 ){ - pCache->pPage1 = pPgHdr; - } + assert( pPage!=0 ); + pPgHdr = (PgHdr *)pPage->pExtra; + + if( !pPgHdr->pPage ){ + return pcacheFetchFinishWithInit(pCache, pgno, pPage); } - *ppPage = pPgHdr; - return (pPgHdr==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK; + pCache->nRefSum++; + pPgHdr->nRef++; + assert( sqlite3PcachePageSanity(pPgHdr) ); + return pPgHdr; } /* ** Decrement the reference count on a page. If the page is clean and the -** reference count drops to 0, then it is made elible for recycling. +** reference count drops to 0, then it is made eligible for recycling. */ -SQLITE_PRIVATE void sqlite3PcacheRelease(PgHdr *p){ +SQLITE_PRIVATE void SQLITE_NOINLINE sqlite3PcacheRelease(PgHdr *p){ assert( p->nRef>0 ); - p->nRef--; - if( p->nRef==0 ){ - PCache *pCache = p->pCache; - pCache->nRef--; - if( (p->flags&PGHDR_DIRTY)==0 ){ + p->pCache->nRefSum--; + if( (--p->nRef)==0 ){ + if( p->flags&PGHDR_CLEAN ){ pcacheUnpin(p); - }else{ - /* Move the page to the head of the dirty list. */ - pcacheRemoveFromDirtyList(p); - pcacheAddToDirtyList(p); + }else if( p->pDirtyPrev!=0 ){ /*OPTIMIZATION-IF-FALSE*/ + /* Move the page to the head of the dirty list. If p->pDirtyPrev==0, + ** then page p is already at the head of the dirty list and the + ** following call would be a no-op. Hence the OPTIMIZATION-IF-FALSE + ** tag above. */ + pcacheManageDirtyList(p, PCACHE_DIRTYLIST_FRONT); } } } @@ -37459,7 +44545,9 @@ SQLITE_PRIVATE void sqlite3PcacheRelease(PgHdr *p){ */ SQLITE_PRIVATE void sqlite3PcacheRef(PgHdr *p){ assert(p->nRef>0); + assert( sqlite3PcachePageSanity(p) ); p->nRef++; + p->pCache->nRefSum++; } /* @@ -37468,17 +44556,13 @@ SQLITE_PRIVATE void sqlite3PcacheRef(PgHdr *p){ ** page pointed to by p is invalid. */ SQLITE_PRIVATE void sqlite3PcacheDrop(PgHdr *p){ - PCache *pCache; assert( p->nRef==1 ); + assert( sqlite3PcachePageSanity(p) ); if( p->flags&PGHDR_DIRTY ){ - pcacheRemoveFromDirtyList(p); + pcacheManageDirtyList(p, PCACHE_DIRTYLIST_REMOVE); } - pCache = p->pCache; - pCache->nRef--; - if( p->pgno==1 ){ - pCache->pPage1 = 0; - } - sqlite3GlobalConfig.pcache2.xUnpin(pCache->pCache, p->pPage, 1); + p->pCache->nRefSum--; + sqlite3GlobalConfig.pcache2.xUnpin(p->pCache->pCache, p->pPage, 1); } /* @@ -37486,11 +44570,17 @@ SQLITE_PRIVATE void sqlite3PcacheDrop(PgHdr *p){ ** make it so. */ SQLITE_PRIVATE void sqlite3PcacheMakeDirty(PgHdr *p){ - p->flags &= ~PGHDR_DONT_WRITE; assert( p->nRef>0 ); - if( 0==(p->flags & PGHDR_DIRTY) ){ - p->flags |= PGHDR_DIRTY; - pcacheAddToDirtyList( p); + assert( sqlite3PcachePageSanity(p) ); + if( p->flags & (PGHDR_CLEAN|PGHDR_DONT_WRITE) ){ /*OPTIMIZATION-IF-FALSE*/ + p->flags &= ~PGHDR_DONT_WRITE; + if( p->flags & PGHDR_CLEAN ){ + p->flags ^= (PGHDR_DIRTY|PGHDR_CLEAN); + pcacheTrace(("%p.DIRTY %d\n",p->pCache,p->pgno)); + assert( (p->flags & (PGHDR_DIRTY|PGHDR_CLEAN))==PGHDR_DIRTY ); + pcacheManageDirtyList(p, PCACHE_DIRTYLIST_ADD); + } + assert( sqlite3PcachePageSanity(p) ); } } @@ -37499,9 +44589,14 @@ SQLITE_PRIVATE void sqlite3PcacheMakeDirty(PgHdr *p){ ** make it so. */ SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr *p){ - if( (p->flags & PGHDR_DIRTY) ){ - pcacheRemoveFromDirtyList(p); - p->flags &= ~(PGHDR_DIRTY|PGHDR_NEED_SYNC); + assert( sqlite3PcachePageSanity(p) ); + if( ALWAYS((p->flags & PGHDR_DIRTY)!=0) ){ + assert( (p->flags & PGHDR_CLEAN)==0 ); + pcacheManageDirtyList(p, PCACHE_DIRTYLIST_REMOVE); + p->flags &= ~(PGHDR_DIRTY|PGHDR_NEED_SYNC|PGHDR_WRITEABLE); + p->flags |= PGHDR_CLEAN; + pcacheTrace(("%p.CLEAN %d\n",p->pCache,p->pgno)); + assert( sqlite3PcachePageSanity(p) ); if( p->nRef==0 ){ pcacheUnpin(p); } @@ -37513,11 +44608,24 @@ SQLITE_PRIVATE void sqlite3PcacheMakeClean(PgHdr *p){ */ SQLITE_PRIVATE void sqlite3PcacheCleanAll(PCache *pCache){ PgHdr *p; + pcacheTrace(("%p.CLEAN-ALL\n",pCache)); while( (p = pCache->pDirty)!=0 ){ sqlite3PcacheMakeClean(p); } } +/* +** Clear the PGHDR_NEED_SYNC and PGHDR_WRITEABLE flag from all dirty pages. +*/ +SQLITE_PRIVATE void sqlite3PcacheClearWritable(PCache *pCache){ + PgHdr *p; + pcacheTrace(("%p.CLEAR-WRITEABLE\n",pCache)); + for(p=pCache->pDirty; p; p=p->pDirtyNext){ + p->flags &= ~(PGHDR_NEED_SYNC|PGHDR_WRITEABLE); + } + pCache->pSynced = pCache->pDirtyTail; +} + /* ** Clear the PGHDR_NEED_SYNC flag from all dirty pages. */ @@ -37536,11 +44644,12 @@ SQLITE_PRIVATE void sqlite3PcacheMove(PgHdr *p, Pgno newPgno){ PCache *pCache = p->pCache; assert( p->nRef>0 ); assert( newPgno>0 ); + assert( sqlite3PcachePageSanity(p) ); + pcacheTrace(("%p.MOVE %d -> %d\n",pCache,p->pgno,newPgno)); sqlite3GlobalConfig.pcache2.xRekey(pCache->pCache, p->pPage, p->pgno,newPgno); p->pgno = newPgno; if( (p->flags&PGHDR_DIRTY) && (p->flags&PGHDR_NEED_SYNC) ){ - pcacheRemoveFromDirtyList(p); - pcacheAddToDirtyList(p); + pcacheManageDirtyList(p, PCACHE_DIRTYLIST_FRONT); } } @@ -37557,6 +44666,7 @@ SQLITE_PRIVATE void sqlite3PcacheTruncate(PCache *pCache, Pgno pgno){ if( pCache->pCache ){ PgHdr *p; PgHdr *pNext; + pcacheTrace(("%p.TRUNCATE %d\n",pCache,pgno)); for(p=pCache->pDirty; p; p=pNext){ pNext = p->pDirtyNext; /* This routine never gets call with a positive pgno except right @@ -37564,14 +44674,19 @@ SQLITE_PRIVATE void sqlite3PcacheTruncate(PCache *pCache, Pgno pgno){ ** it must be that pgno==0. */ assert( p->pgno>0 ); - if( ALWAYS(p->pgno>pgno) ){ + if( p->pgno>pgno ){ assert( p->flags&PGHDR_DIRTY ); sqlite3PcacheMakeClean(p); } } - if( pgno==0 && pCache->pPage1 ){ - memset(pCache->pPage1->pData, 0, pCache->szPage); - pgno = 1; + if( pgno==0 && pCache->nRefSum ){ + sqlite3_pcache_page *pPage1; + pPage1 = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache,1,0); + if( ALWAYS(pPage1) ){ /* Page 1 is always available in cache, because + ** pCache->nRefSum>0 */ + memset(pPage1->pBuf, 0, pCache->szPage); + pgno = 1; + } } sqlite3GlobalConfig.pcache2.xTruncate(pCache->pCache, pgno+1); } @@ -37581,9 +44696,9 @@ SQLITE_PRIVATE void sqlite3PcacheTruncate(PCache *pCache, Pgno pgno){ ** Close a cache. */ SQLITE_PRIVATE void sqlite3PcacheClose(PCache *pCache){ - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache); - } + assert( pCache->pCache!=0 ); + pcacheTrace(("%p.CLOSE\n",pCache)); + sqlite3GlobalConfig.pcache2.xDestroy(pCache->pCache); } /* @@ -37595,29 +44710,31 @@ SQLITE_PRIVATE void sqlite3PcacheClear(PCache *pCache){ /* ** Merge two lists of pages connected by pDirty and in pgno order. -** Do not both fixing the pDirtyPrev pointers. +** Do not bother fixing the pDirtyPrev pointers. */ static PgHdr *pcacheMergeDirtyList(PgHdr *pA, PgHdr *pB){ PgHdr result, *pTail; pTail = &result; - while( pA && pB ){ + assert( pA!=0 && pB!=0 ); + for(;;){ if( pA->pgnopgno ){ pTail->pDirty = pA; pTail = pA; pA = pA->pDirty; + if( pA==0 ){ + pTail->pDirty = pB; + break; + } }else{ pTail->pDirty = pB; pTail = pB; pB = pB->pDirty; + if( pB==0 ){ + pTail->pDirty = pA; + break; + } } } - if( pA ){ - pTail->pDirty = pA; - }else if( pB ){ - pTail->pDirty = pB; - }else{ - pTail->pDirty = 0; - } return result.pDirty; } @@ -37658,7 +44775,8 @@ static PgHdr *pcacheSortDirtyList(PgHdr *pIn){ } p = a[0]; for(i=1; inRef; + return pCache->nRefSum; } /* @@ -37692,11 +44813,8 @@ SQLITE_PRIVATE int sqlite3PcachePageRefcount(PgHdr *p){ ** Return the total number of pages in the cache. */ SQLITE_PRIVATE int sqlite3PcachePagecount(PCache *pCache){ - int nPage = 0; - if( pCache->pCache ){ - nPage = sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache); - } - return nPage; + assert( pCache->pCache!=0 ); + return sqlite3GlobalConfig.pcache2.xPagecount(pCache->pCache); } #ifdef SQLITE_TEST @@ -37712,20 +44830,55 @@ SQLITE_PRIVATE int sqlite3PcacheGetCachesize(PCache *pCache){ ** Set the suggested cache-size value. */ SQLITE_PRIVATE void sqlite3PcacheSetCachesize(PCache *pCache, int mxPage){ + assert( pCache->pCache!=0 ); pCache->szCache = mxPage; - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache2.xCachesize(pCache->pCache, - numberOfCachePages(pCache)); + sqlite3GlobalConfig.pcache2.xCachesize(pCache->pCache, + numberOfCachePages(pCache)); +} + +/* +** Set the suggested cache-spill value. Make no changes if if the +** argument is zero. Return the effective cache-spill size, which will +** be the larger of the szSpill and szCache. +*/ +SQLITE_PRIVATE int sqlite3PcacheSetSpillsize(PCache *p, int mxPage){ + int res; + assert( p->pCache!=0 ); + if( mxPage ){ + if( mxPage<0 ){ + mxPage = (int)((-1024*(i64)mxPage)/(p->szPage+p->szExtra)); + } + p->szSpill = mxPage; } + res = numberOfCachePages(p); + if( resszSpill ) res = p->szSpill; + return res; } /* ** Free up as much memory as possible from the page cache. */ SQLITE_PRIVATE void sqlite3PcacheShrink(PCache *pCache){ - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache2.xShrink(pCache->pCache); - } + assert( pCache->pCache!=0 ); + sqlite3GlobalConfig.pcache2.xShrink(pCache->pCache); +} + +/* +** Return the size of the header added by this middleware layer +** in the page-cache hierarchy. +*/ +SQLITE_PRIVATE int sqlite3HeaderSizePcache(void){ return ROUND8(sizeof(PgHdr)); } + +/* +** Return the number of dirty pages currently in the cache, as a percentage +** of the configured cache size. +*/ +SQLITE_PRIVATE int sqlite3PCachePercentDirty(PCache *pCache){ + PgHdr *pDirty; + int nDirty = 0; + int nCache = numberOfCachePages(pCache); + for(pDirty=pCache->pDirty; pDirty; pDirty=pDirty->pDirtyNext) nDirty++; + return nCache ? (int)(((i64)nDirty * 100) / nCache) : 0; } #if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) @@ -37759,18 +44912,100 @@ SQLITE_PRIVATE void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHd ** This file implements the default page cache implementation (the ** sqlite3_pcache interface). It also contains part of the implementation ** of the SQLITE_CONFIG_PAGECACHE and sqlite3_release_memory() features. -** If the default page cache implementation is overriden, then neither of +** If the default page cache implementation is overridden, then neither of ** these two features are available. +** +** A Page cache line looks like this: +** +** ------------------------------------------------------------- +** | database page content | PgHdr1 | MemPage | PgHdr | +** ------------------------------------------------------------- +** +** The database page content is up front (so that buffer overreads tend to +** flow harmlessly into the PgHdr1, MemPage, and PgHdr extensions). MemPage +** is the extension added by the btree.c module containing information such +** as the database page number and how that database page is used. PgHdr +** is added by the pcache.c layer and contains information used to keep track +** of which pages are "dirty". PgHdr1 is an extension added by this +** module (pcache1.c). The PgHdr1 header is a subclass of sqlite3_pcache_page. +** PgHdr1 contains information needed to look up a page by its page number. +** The superclass sqlite3_pcache_page.pBuf points to the start of the +** database page content and sqlite3_pcache_page.pExtra points to PgHdr. +** +** The size of the extension (MemPage+PgHdr+PgHdr1) can be determined at +** runtime using sqlite3_config(SQLITE_CONFIG_PCACHE_HDRSZ, &size). The +** sizes of the extensions sum to 272 bytes on x64 for 3.8.10, but this +** size can vary according to architecture, compile-time options, and +** SQLite library version number. +** +** If SQLITE_PCACHE_SEPARATE_HEADER is defined, then the extension is obtained +** using a separate memory allocation from the database page content. This +** seeks to overcome the "clownshoe" problem (also called "internal +** fragmentation" in academic literature) of allocating a few bytes more +** than a power of two with the memory allocator rounding up to the next +** power of two, and leaving the rounded-up space unused. +** +** This module tracks pointers to PgHdr1 objects. Only pcache.c communicates +** with this module. Information is passed back and forth as PgHdr1 pointers. +** +** The pcache.c and pager.c modules deal pointers to PgHdr objects. +** The btree.c module deals with pointers to MemPage objects. +** +** SOURCE OF PAGE CACHE MEMORY: +** +** Memory for a page might come from any of three sources: +** +** (1) The general-purpose memory allocator - sqlite3Malloc() +** (2) Global page-cache memory provided using sqlite3_config() with +** SQLITE_CONFIG_PAGECACHE. +** (3) PCache-local bulk allocation. +** +** The third case is a chunk of heap memory (defaulting to 100 pages worth) +** that is allocated when the page cache is created. The size of the local +** bulk allocation can be adjusted using +** +** sqlite3_config(SQLITE_CONFIG_PAGECACHE, (void*)0, 0, N). +** +** If N is positive, then N pages worth of memory are allocated using a single +** sqlite3Malloc() call and that memory is used for the first N pages allocated. +** Or if N is negative, then -1024*N bytes of memory are allocated and used +** for as many pages as can be accomodated. +** +** Only one of (2) or (3) can be used. Once the memory available to (2) or +** (3) is exhausted, subsequent allocations fail over to the general-purpose +** memory allocator (1). +** +** Earlier versions of SQLite used only methods (1) and (2). But experiments +** show that method (3) with N==100 provides about a 5% performance boost for +** common workloads. */ - +/* #include "sqliteInt.h" */ typedef struct PCache1 PCache1; typedef struct PgHdr1 PgHdr1; typedef struct PgFreeslot PgFreeslot; typedef struct PGroup PGroup; +/* +** Each cache entry is represented by an instance of the following +** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of +** PgHdr1.pCache->szPage bytes is allocated directly before this structure +** in memory. +*/ +struct PgHdr1 { + sqlite3_pcache_page page; /* Base class. Must be first. pBuf & pExtra */ + unsigned int iKey; /* Key value (page number) */ + u8 isPinned; /* Page in use, not on the LRU list */ + u8 isBulkLocal; /* This page from bulk local storage */ + u8 isAnchor; /* This is the PGroup.lru element */ + PgHdr1 *pNext; /* Next in hash table chain */ + PCache1 *pCache; /* Cache that currently owns this page */ + PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ + PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ +}; + /* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set -** of one or more PCaches that are able to recycle each others unpinned +** of one or more PCaches that are able to recycle each other's unpinned ** pages when they are under memory pressure. A PGroup is an instance of ** the following object. ** @@ -37797,7 +45032,7 @@ struct PGroup { unsigned int nMinPage; /* Sum of nMin for purgeable caches */ unsigned int mxPinned; /* nMaxpage + 10 - nMinPage */ unsigned int nCurrentPage; /* Number of purgeable pages allocated */ - PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */ + PgHdr1 lru; /* The beginning and end of the LRU list */ }; /* Each page cache is an instance of the following object. Every @@ -37815,8 +45050,9 @@ struct PCache1 { ** The PGroup mutex must be held when accessing nMax. */ PGroup *pGroup; /* PGroup this cache belongs to */ - int szPage; /* Size of allocated pages in bytes */ - int szExtra; /* Size of extra space in bytes */ + int szPage; /* Size of database content section */ + int szExtra; /* sizeof(MemPage)+sizeof(PgHdr) */ + int szAlloc; /* Total size of one pcache line */ int bPurgeable; /* True if cache is purgeable */ unsigned int nMin; /* Minimum number of pages reserved */ unsigned int nMax; /* Configured "cache_size" value */ @@ -37830,27 +45066,13 @@ struct PCache1 { unsigned int nPage; /* Total number of pages in apHash */ unsigned int nHash; /* Number of slots in apHash[] */ PgHdr1 **apHash; /* Hash table for fast lookup by key */ + PgHdr1 *pFree; /* List of unused pcache-local pages */ + void *pBulk; /* Bulk memory used by pcache-local */ }; /* -** Each cache entry is represented by an instance of the following -** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of -** PgHdr1.pCache->szPage bytes is allocated directly before this structure -** in memory. -*/ -struct PgHdr1 { - sqlite3_pcache_page page; - unsigned int iKey; /* Key value (page number) */ - u8 isPinned; /* Page in use, not on the LRU list */ - PgHdr1 *pNext; /* Next in hash table chain */ - PCache1 *pCache; /* Cache that currently owns this page */ - PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ - PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ -}; - -/* -** Free slots in the allocator used to divide up the buffer provided using -** the SQLITE_CONFIG_PAGECACHE mechanism. +** Free slots in the allocator used to divide up the global page cache +** buffer provided using the SQLITE_CONFIG_PAGECACHE mechanism. */ struct PgFreeslot { PgFreeslot *pNext; /* Next free slot */ @@ -37868,10 +45090,12 @@ static SQLITE_WSD struct PCacheGlobal { ** The nFreeSlot and pFree values do require mutex protection. */ int isInit; /* True if initialized */ + int separateCache; /* Use a new PGroup for each PCache */ + int nInitPage; /* Initial bulk allocation size */ int szSlot; /* Size of each free slot */ int nSlot; /* The number of pcache slots */ int nReserve; /* Try to keep nFreeSlot above this */ - void *pStart, *pEnd; /* Bounds of pagecache malloc range */ + void *pStart, *pEnd; /* Bounds of global page cache memory */ /* Above requires no mutex. Use mutex below for variable that follow. */ sqlite3_mutex *mutex; /* Mutex for accessing the following: */ PgFreeslot *pFree; /* Free page blocks */ @@ -37893,12 +45117,20 @@ static SQLITE_WSD struct PCacheGlobal { /* ** Macros to enter and leave the PCache LRU mutex. */ -#define pcache1EnterMutex(X) sqlite3_mutex_enter((X)->mutex) -#define pcache1LeaveMutex(X) sqlite3_mutex_leave((X)->mutex) +#if !defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0 +# define pcache1EnterMutex(X) assert((X)->mutex==0) +# define pcache1LeaveMutex(X) assert((X)->mutex==0) +# define PCACHE1_MIGHT_USE_GROUP_MUTEX 0 +#else +# define pcache1EnterMutex(X) sqlite3_mutex_enter((X)->mutex) +# define pcache1LeaveMutex(X) sqlite3_mutex_leave((X)->mutex) +# define PCACHE1_MIGHT_USE_GROUP_MUTEX 1 +#endif /******************************************************************************/ /******** Page Allocation/SQLITE_CONFIG_PCACHE Related Functions **************/ + /* ** This function is called during initialization if a static buffer is ** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE @@ -37911,6 +45143,7 @@ static SQLITE_WSD struct PCacheGlobal { SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){ if( pcache1.isInit ){ PgFreeslot *p; + if( pBuf==0 ) sz = n = 0; sz = ROUNDDOWN8(sz); pcache1.szSlot = sz; pcache1.nSlot = pcache1.nFreeSlot = n; @@ -37928,6 +45161,44 @@ SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){ } } +/* +** Try to initialize the pCache->pFree and pCache->pBulk fields. Return +** true if pCache->pFree ends up containing one or more free pages. +*/ +static int pcache1InitBulk(PCache1 *pCache){ + i64 szBulk; + char *zBulk; + if( pcache1.nInitPage==0 ) return 0; + /* Do not bother with a bulk allocation if the cache size very small */ + if( pCache->nMax<3 ) return 0; + sqlite3BeginBenignMalloc(); + if( pcache1.nInitPage>0 ){ + szBulk = pCache->szAlloc * (i64)pcache1.nInitPage; + }else{ + szBulk = -1024 * (i64)pcache1.nInitPage; + } + if( szBulk > pCache->szAlloc*(i64)pCache->nMax ){ + szBulk = pCache->szAlloc*(i64)pCache->nMax; + } + zBulk = pCache->pBulk = sqlite3Malloc( szBulk ); + sqlite3EndBenignMalloc(); + if( zBulk ){ + int nBulk = sqlite3MallocSize(zBulk)/pCache->szAlloc; + int i; + for(i=0; iszPage]; + pX->page.pBuf = zBulk; + pX->page.pExtra = &pX[1]; + pX->isBulkLocal = 1; + pX->isAnchor = 0; + pX->pNext = pCache->pFree; + pCache->pFree = pX; + zBulk += pCache->szAlloc; + } + } + return pCache->pFree!=0; +} + /* ** Malloc function used within this file to allocate space from the buffer ** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no @@ -37940,7 +45211,6 @@ SQLITE_PRIVATE void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){ static void *pcache1Alloc(int nByte){ void *p = 0; assert( sqlite3_mutex_notheld(pcache1.grp.mutex) ); - sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte); if( nByte<=pcache1.szSlot ){ sqlite3_mutex_enter(pcache1.mutex); p = (PgHdr1 *)pcache1.pFree; @@ -37949,7 +45219,8 @@ static void *pcache1Alloc(int nByte){ pcache1.nFreeSlot--; pcache1.bUnderPressure = pcache1.nFreeSlot=0 ); - sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1); + sqlite3StatusHighwater(SQLITE_STATUS_PAGECACHE_SIZE, nByte); + sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_USED, 1); } sqlite3_mutex_leave(pcache1.mutex); } @@ -37962,7 +45233,8 @@ static void *pcache1Alloc(int nByte){ if( p ){ int sz = sqlite3MallocSize(p); sqlite3_mutex_enter(pcache1.mutex); - sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz); + sqlite3StatusHighwater(SQLITE_STATUS_PAGECACHE_SIZE, nByte); + sqlite3StatusUp(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz); sqlite3_mutex_leave(pcache1.mutex); } #endif @@ -37974,13 +45246,12 @@ static void *pcache1Alloc(int nByte){ /* ** Free an allocated buffer obtained from pcache1Alloc(). */ -static int pcache1Free(void *p){ - int nFreed = 0; - if( p==0 ) return 0; - if( p>=pcache1.pStart && ppNext = pcache1.pFree; pcache1.pFree = pSlot; @@ -37991,15 +45262,17 @@ static int pcache1Free(void *p){ }else{ assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) ); sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - nFreed = sqlite3MallocSize(p); #ifndef SQLITE_DISABLE_PAGECACHE_OVERFLOW_STATS - sqlite3_mutex_enter(pcache1.mutex); - sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -nFreed); - sqlite3_mutex_leave(pcache1.mutex); + { + int nFreed = 0; + nFreed = sqlite3MallocSize(p); + sqlite3_mutex_enter(pcache1.mutex); + sqlite3StatusDown(SQLITE_STATUS_PAGECACHE_OVERFLOW, nFreed); + sqlite3_mutex_leave(pcache1.mutex); + } #endif sqlite3_free(p); } - return nFreed; } #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT @@ -38023,58 +45296,72 @@ static int pcache1MemSize(void *p){ /* ** Allocate a new page object initially associated with cache pCache. */ -static PgHdr1 *pcache1AllocPage(PCache1 *pCache){ +static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){ PgHdr1 *p = 0; void *pPg; - /* The group mutex must be released before pcache1Alloc() is called. This - ** is because it may call sqlite3_release_memory(), which assumes that - ** this mutex is not held. */ assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - pcache1LeaveMutex(pCache->pGroup); -#ifdef SQLITE_PCACHE_SEPARATE_HEADER - pPg = pcache1Alloc(pCache->szPage); - p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra); - if( !pPg || !p ){ - pcache1Free(pPg); - sqlite3_free(p); - pPg = 0; - } -#else - pPg = pcache1Alloc(sizeof(PgHdr1) + pCache->szPage + pCache->szExtra); - p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage]; + if( pCache->pFree || (pCache->nPage==0 && pcache1InitBulk(pCache)) ){ + p = pCache->pFree; + pCache->pFree = p->pNext; + p->pNext = 0; + }else{ +#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT + /* The group mutex must be released before pcache1Alloc() is called. This + ** is because it might call sqlite3_release_memory(), which assumes that + ** this mutex is not held. */ + assert( pcache1.separateCache==0 ); + assert( pCache->pGroup==&pcache1.grp ); + pcache1LeaveMutex(pCache->pGroup); #endif - pcache1EnterMutex(pCache->pGroup); - - if( pPg ){ + if( benignMalloc ){ sqlite3BeginBenignMalloc(); } +#ifdef SQLITE_PCACHE_SEPARATE_HEADER + pPg = pcache1Alloc(pCache->szPage); + p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra); + if( !pPg || !p ){ + pcache1Free(pPg); + sqlite3_free(p); + pPg = 0; + } +#else + pPg = pcache1Alloc(pCache->szAlloc); + p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage]; +#endif + if( benignMalloc ){ sqlite3EndBenignMalloc(); } +#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT + pcache1EnterMutex(pCache->pGroup); +#endif + if( pPg==0 ) return 0; p->page.pBuf = pPg; p->page.pExtra = &p[1]; - if( pCache->bPurgeable ){ - pCache->pGroup->nCurrentPage++; - } - return p; + p->isBulkLocal = 0; + p->isAnchor = 0; } - return 0; + if( pCache->bPurgeable ){ + pCache->pGroup->nCurrentPage++; + } + return p; } /* ** Free a page object allocated by pcache1AllocPage(). -** -** The pointer is allowed to be NULL, which is prudent. But it turns out -** that the current implementation happens to never call this routine -** with a NULL pointer, so we mark the NULL test with ALWAYS(). */ static void pcache1FreePage(PgHdr1 *p){ - if( ALWAYS(p) ){ - PCache1 *pCache = p->pCache; - assert( sqlite3_mutex_held(p->pCache->pGroup->mutex) ); + PCache1 *pCache; + assert( p!=0 ); + pCache = p->pCache; + assert( sqlite3_mutex_held(p->pCache->pGroup->mutex) ); + if( p->isBulkLocal ){ + p->pNext = pCache->pFree; + pCache->pFree = p; + }else{ pcache1Free(p->page.pBuf); #ifdef SQLITE_PCACHE_SEPARATE_HEADER sqlite3_free(p); #endif - if( pCache->bPurgeable ){ - pCache->pGroup->nCurrentPage--; - } + } + if( pCache->bPurgeable ){ + pCache->pGroup->nCurrentPage--; } } @@ -38128,7 +45415,7 @@ static int pcache1UnderMemoryPressure(PCache1 *pCache){ ** ** The PCache mutex must be held when this function is called. */ -static int pcache1ResizeHash(PCache1 *p){ +static void pcache1ResizeHash(PCache1 *p){ PgHdr1 **apNew; unsigned int nNew; unsigned int i; @@ -38160,8 +45447,6 @@ static int pcache1ResizeHash(PCache1 *p){ p->apHash = apNew; p->nHash = nNew; } - - return (p->apHash ? SQLITE_OK : SQLITE_NOMEM); } /* @@ -38171,41 +45456,35 @@ static int pcache1ResizeHash(PCache1 *p){ ** ** The PGroup mutex must be held when this function is called. */ -static void pcache1PinPage(PgHdr1 *pPage){ +static PgHdr1 *pcache1PinPage(PgHdr1 *pPage){ PCache1 *pCache; - PGroup *pGroup; assert( pPage!=0 ); assert( pPage->isPinned==0 ); pCache = pPage->pCache; - pGroup = pCache->pGroup; - assert( pPage->pLruNext || pPage==pGroup->pLruTail ); - assert( pPage->pLruPrev || pPage==pGroup->pLruHead ); - assert( sqlite3_mutex_held(pGroup->mutex) ); - if( pPage->pLruPrev ){ - pPage->pLruPrev->pLruNext = pPage->pLruNext; - }else{ - pGroup->pLruHead = pPage->pLruNext; - } - if( pPage->pLruNext ){ - pPage->pLruNext->pLruPrev = pPage->pLruPrev; - }else{ - pGroup->pLruTail = pPage->pLruPrev; - } + assert( pPage->pLruNext ); + assert( pPage->pLruPrev ); + assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); + pPage->pLruPrev->pLruNext = pPage->pLruNext; + pPage->pLruNext->pLruPrev = pPage->pLruPrev; pPage->pLruNext = 0; pPage->pLruPrev = 0; pPage->isPinned = 1; + assert( pPage->isAnchor==0 ); + assert( pCache->pGroup->lru.isAnchor==1 ); pCache->nRecyclable--; + return pPage; } /* ** Remove the page supplied as an argument from the hash table ** (PCache1.apHash structure) that it is currently stored in. +** Also free the page if freePage is true. ** ** The PGroup mutex must be held when this function is called. */ -static void pcache1RemoveFromHash(PgHdr1 *pPage){ +static void pcache1RemoveFromHash(PgHdr1 *pPage, int freeFlag){ unsigned int h; PCache1 *pCache = pPage->pCache; PgHdr1 **pp; @@ -38216,21 +45495,28 @@ static void pcache1RemoveFromHash(PgHdr1 *pPage){ *pp = (*pp)->pNext; pCache->nPage--; + if( freeFlag ) pcache1FreePage(pPage); } /* ** If there are currently more than nMaxPage pages allocated, try ** to recycle pages to reduce the number allocated to nMaxPage. */ -static void pcache1EnforceMaxPage(PGroup *pGroup){ +static void pcache1EnforceMaxPage(PCache1 *pCache){ + PGroup *pGroup = pCache->pGroup; + PgHdr1 *p; assert( sqlite3_mutex_held(pGroup->mutex) ); - while( pGroup->nCurrentPage>pGroup->nMaxPage && pGroup->pLruTail ){ - PgHdr1 *p = pGroup->pLruTail; + while( pGroup->nCurrentPage>pGroup->nMaxPage + && (p=pGroup->lru.pLruPrev)->isAnchor==0 + ){ assert( p->pCache->pGroup==pGroup ); assert( p->isPinned==0 ); pcache1PinPage(p); - pcache1RemoveFromHash(p); - pcache1FreePage(p); + pcache1RemoveFromHash(p, 1); + } + if( pCache->nPage==0 && pCache->pBulk ){ + sqlite3_free(pCache->pBulk); + pCache->pBulk = pCache->pFree = 0; } } @@ -38245,12 +45531,30 @@ static void pcache1TruncateUnsafe( PCache1 *pCache, /* The cache to truncate */ unsigned int iLimit /* Drop pages with this pgno or larger */ ){ - TESTONLY( unsigned int nPage = 0; ) /* To assert pCache->nPage is correct */ - unsigned int h; + TESTONLY( int nPage = 0; ) /* To assert pCache->nPage is correct */ + unsigned int h, iStop; assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - for(h=0; hnHash; h++){ - PgHdr1 **pp = &pCache->apHash[h]; + assert( pCache->iMaxKey >= iLimit ); + assert( pCache->nHash > 0 ); + if( pCache->iMaxKey - iLimit < pCache->nHash ){ + /* If we are just shaving the last few pages off the end of the + ** cache, then there is no point in scanning the entire hash table. + ** Only scan those hash slots that might contain pages that need to + ** be removed. */ + h = iLimit % pCache->nHash; + iStop = pCache->iMaxKey % pCache->nHash; + TESTONLY( nPage = -10; ) /* Disable the pCache->nPage validity check */ + }else{ + /* This is the general case where many pages are being removed. + ** It is necessary to scan the entire hash table */ + h = pCache->nHash/2; + iStop = h - 1; + } + for(;;){ + PgHdr1 **pp; PgHdr1 *pPage; + assert( hnHash ); + pp = &pCache->apHash[h]; while( (pPage = *pp)!=0 ){ if( pPage->iKey>=iLimit ){ pCache->nPage--; @@ -38259,11 +45563,13 @@ static void pcache1TruncateUnsafe( pcache1FreePage(pPage); }else{ pp = &pPage->pNext; - TESTONLY( nPage++; ) + TESTONLY( if( nPage>=0 ) nPage++; ) } } + if( h==iStop ) break; + h = (h+1) % pCache->nHash; } - assert( pCache->nPage==nPage ); + assert( nPage<0 || pCache->nPage==(unsigned)nPage ); } /******************************************************************************/ @@ -38276,9 +45582,44 @@ static int pcache1Init(void *NotUsed){ UNUSED_PARAMETER(NotUsed); assert( pcache1.isInit==0 ); memset(&pcache1, 0, sizeof(pcache1)); + + + /* + ** The pcache1.separateCache variable is true if each PCache has its own + ** private PGroup (mode-1). pcache1.separateCache is false if the single + ** PGroup in pcache1.grp is used for all page caches (mode-2). + ** + ** * Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT + ** + ** * Use a unified cache in single-threaded applications that have + ** configured a start-time buffer for use as page-cache memory using + ** sqlite3_config(SQLITE_CONFIG_PAGECACHE, pBuf, sz, N) with non-NULL + ** pBuf argument. + ** + ** * Otherwise use separate caches (mode-1) + */ +#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) + pcache1.separateCache = 0; +#elif SQLITE_THREADSAFE + pcache1.separateCache = sqlite3GlobalConfig.pPage==0 + || sqlite3GlobalConfig.bCoreMutex>0; +#else + pcache1.separateCache = sqlite3GlobalConfig.pPage==0; +#endif + +#if SQLITE_THREADSAFE if( sqlite3GlobalConfig.bCoreMutex ){ - pcache1.grp.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU); - pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_PMEM); + pcache1.grp.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_LRU); + pcache1.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PMEM); + } +#endif + if( pcache1.separateCache + && sqlite3GlobalConfig.nPage!=0 + && sqlite3GlobalConfig.pPage==0 + ){ + pcache1.nInitPage = sqlite3GlobalConfig.nPage; + }else{ + pcache1.nInitPage = 0; } pcache1.grp.mxPinned = 10; pcache1.isInit = 1; @@ -38296,6 +45637,9 @@ static void pcache1Shutdown(void *NotUsed){ memset(&pcache1, 0, sizeof(pcache1)); } +/* forward declaration */ +static void pcache1Destroy(sqlite3_pcache *p); + /* ** Implementation of the sqlite3_pcache.xCreate method. ** @@ -38306,46 +45650,38 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){ PGroup *pGroup; /* The group the new page cache will belong to */ int sz; /* Bytes of memory required to allocate the new cache */ - /* - ** The separateCache variable is true if each PCache has its own private - ** PGroup. In other words, separateCache is true for mode (1) where no - ** mutexing is required. - ** - ** * Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT - ** - ** * Always use a unified cache in single-threaded applications - ** - ** * Otherwise (if multi-threaded and ENABLE_MEMORY_MANAGEMENT is off) - ** use separate caches (mode-1) - */ -#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0 - const int separateCache = 0; -#else - int separateCache = sqlite3GlobalConfig.bCoreMutex>0; -#endif - assert( (szPage & (szPage-1))==0 && szPage>=512 && szPage<=65536 ); assert( szExtra < 300 ); - sz = sizeof(PCache1) + sizeof(PGroup)*separateCache; + sz = sizeof(PCache1) + sizeof(PGroup)*pcache1.separateCache; pCache = (PCache1 *)sqlite3MallocZero(sz); if( pCache ){ - if( separateCache ){ + if( pcache1.separateCache ){ pGroup = (PGroup*)&pCache[1]; pGroup->mxPinned = 10; }else{ pGroup = &pcache1.grp; } + if( pGroup->lru.isAnchor==0 ){ + pGroup->lru.isAnchor = 1; + pGroup->lru.pLruPrev = pGroup->lru.pLruNext = &pGroup->lru; + } pCache->pGroup = pGroup; pCache->szPage = szPage; pCache->szExtra = szExtra; + pCache->szAlloc = szPage + szExtra + ROUND8(sizeof(PgHdr1)); pCache->bPurgeable = (bPurgeable ? 1 : 0); + pcache1EnterMutex(pGroup); + pcache1ResizeHash(pCache); if( bPurgeable ){ pCache->nMin = 10; - pcache1EnterMutex(pGroup); pGroup->nMinPage += pCache->nMin; pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pcache1LeaveMutex(pGroup); + } + pcache1LeaveMutex(pGroup); + if( pCache->nHash==0 ){ + pcache1Destroy((sqlite3_pcache*)pCache); + pCache = 0; } } return (sqlite3_pcache *)pCache; @@ -38365,7 +45701,7 @@ static void pcache1Cachesize(sqlite3_pcache *p, int nMax){ pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; pCache->nMax = nMax; pCache->n90pct = pCache->nMax*9/10; - pcache1EnforceMaxPage(pGroup); + pcache1EnforceMaxPage(pCache); pcache1LeaveMutex(pGroup); } } @@ -38383,7 +45719,7 @@ static void pcache1Shrink(sqlite3_pcache *p){ pcache1EnterMutex(pGroup); savedMaxPage = pGroup->nMaxPage; pGroup->nMaxPage = 0; - pcache1EnforceMaxPage(pGroup); + pcache1EnforceMaxPage(pCache); pGroup->nMaxPage = savedMaxPage; pcache1LeaveMutex(pGroup); } @@ -38401,6 +45737,84 @@ static int pcache1Pagecount(sqlite3_pcache *p){ return n; } + +/* +** Implement steps 3, 4, and 5 of the pcache1Fetch() algorithm described +** in the header of the pcache1Fetch() procedure. +** +** This steps are broken out into a separate procedure because they are +** usually not needed, and by avoiding the stack initialization required +** for these steps, the main pcache1Fetch() procedure can run faster. +*/ +static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2( + PCache1 *pCache, + unsigned int iKey, + int createFlag +){ + unsigned int nPinned; + PGroup *pGroup = pCache->pGroup; + PgHdr1 *pPage = 0; + + /* Step 3: Abort if createFlag is 1 but the cache is nearly full */ + assert( pCache->nPage >= pCache->nRecyclable ); + nPinned = pCache->nPage - pCache->nRecyclable; + assert( pGroup->mxPinned == pGroup->nMaxPage + 10 - pGroup->nMinPage ); + assert( pCache->n90pct == pCache->nMax*9/10 ); + if( createFlag==1 && ( + nPinned>=pGroup->mxPinned + || nPinned>=pCache->n90pct + || (pcache1UnderMemoryPressure(pCache) && pCache->nRecyclablenPage>=pCache->nHash ) pcache1ResizeHash(pCache); + assert( pCache->nHash>0 && pCache->apHash ); + + /* Step 4. Try to recycle a page. */ + if( pCache->bPurgeable + && !pGroup->lru.pLruPrev->isAnchor + && ((pCache->nPage+1>=pCache->nMax) || pcache1UnderMemoryPressure(pCache)) + ){ + PCache1 *pOther; + pPage = pGroup->lru.pLruPrev; + assert( pPage->isPinned==0 ); + pcache1RemoveFromHash(pPage, 0); + pcache1PinPage(pPage); + pOther = pPage->pCache; + if( pOther->szAlloc != pCache->szAlloc ){ + pcache1FreePage(pPage); + pPage = 0; + }else{ + pGroup->nCurrentPage -= (pOther->bPurgeable - pCache->bPurgeable); + } + } + + /* Step 5. If a usable page buffer has still not been found, + ** attempt to allocate a new one. + */ + if( !pPage ){ + pPage = pcache1AllocPage(pCache, createFlag==1); + } + + if( pPage ){ + unsigned int h = iKey % pCache->nHash; + pCache->nPage++; + pPage->iKey = iKey; + pPage->pNext = pCache->apHash[h]; + pPage->pCache = pCache; + pPage->pLruPrev = 0; + pPage->pLruNext = 0; + pPage->isPinned = 1; + *(void **)pPage->page.pExtra = 0; + pCache->apHash[h] = pPage; + if( iKey>pCache->iMaxKey ){ + pCache->iMaxKey = iKey; + } + } + return pPage; +} + /* ** Implementation of the sqlite3_pcache.xFetch method. ** @@ -38454,124 +45868,80 @@ static int pcache1Pagecount(sqlite3_pcache *p){ ** proceed to step 5. ** ** 5. Otherwise, allocate and return a new page buffer. +** +** There are two versions of this routine. pcache1FetchWithMutex() is +** the general case. pcache1FetchNoMutex() is a faster implementation for +** the common case where pGroup->mutex is NULL. The pcache1Fetch() wrapper +** invokes the appropriate routine. */ +static PgHdr1 *pcache1FetchNoMutex( + sqlite3_pcache *p, + unsigned int iKey, + int createFlag +){ + PCache1 *pCache = (PCache1 *)p; + PgHdr1 *pPage = 0; + + /* Step 1: Search the hash table for an existing entry. */ + pPage = pCache->apHash[iKey % pCache->nHash]; + while( pPage && pPage->iKey!=iKey ){ pPage = pPage->pNext; } + + /* Step 2: If the page was found in the hash table, then return it. + ** If the page was not in the hash table and createFlag is 0, abort. + ** Otherwise (page not in hash and createFlag!=0) continue with + ** subsequent steps to try to create the page. */ + if( pPage ){ + if( !pPage->isPinned ){ + return pcache1PinPage(pPage); + }else{ + return pPage; + } + }else if( createFlag ){ + /* Steps 3, 4, and 5 implemented by this subroutine */ + return pcache1FetchStage2(pCache, iKey, createFlag); + }else{ + return 0; + } +} +#if PCACHE1_MIGHT_USE_GROUP_MUTEX +static PgHdr1 *pcache1FetchWithMutex( + sqlite3_pcache *p, + unsigned int iKey, + int createFlag +){ + PCache1 *pCache = (PCache1 *)p; + PgHdr1 *pPage; + + pcache1EnterMutex(pCache->pGroup); + pPage = pcache1FetchNoMutex(p, iKey, createFlag); + assert( pPage==0 || pCache->iMaxKey>=iKey ); + pcache1LeaveMutex(pCache->pGroup); + return pPage; +} +#endif static sqlite3_pcache_page *pcache1Fetch( sqlite3_pcache *p, unsigned int iKey, int createFlag ){ - unsigned int nPinned; +#if PCACHE1_MIGHT_USE_GROUP_MUTEX || defined(SQLITE_DEBUG) PCache1 *pCache = (PCache1 *)p; - PGroup *pGroup; - PgHdr1 *pPage = 0; +#endif assert( offsetof(PgHdr1,page)==0 ); assert( pCache->bPurgeable || createFlag!=1 ); assert( pCache->bPurgeable || pCache->nMin==0 ); assert( pCache->bPurgeable==0 || pCache->nMin==10 ); assert( pCache->nMin==0 || pCache->bPurgeable ); - pcache1EnterMutex(pGroup = pCache->pGroup); - - /* Step 1: Search the hash table for an existing entry. */ - if( pCache->nHash>0 ){ - unsigned int h = iKey % pCache->nHash; - for(pPage=pCache->apHash[h]; pPage&&pPage->iKey!=iKey; pPage=pPage->pNext); - } - - /* Step 2: Abort if no existing page is found and createFlag is 0 */ - if( pPage ){ - if( !pPage->isPinned ) pcache1PinPage(pPage); - goto fetch_out; - } - if( createFlag==0 ){ - goto fetch_out; - } - - /* The pGroup local variable will normally be initialized by the - ** pcache1EnterMutex() macro above. But if SQLITE_MUTEX_OMIT is defined, - ** then pcache1EnterMutex() is a no-op, so we have to initialize the - ** local variable here. Delaying the initialization of pGroup is an - ** optimization: The common case is to exit the module before reaching - ** this point. - */ -#ifdef SQLITE_MUTEX_OMIT - pGroup = pCache->pGroup; + assert( pCache->nHash>0 ); +#if PCACHE1_MIGHT_USE_GROUP_MUTEX + if( pCache->pGroup->mutex ){ + return (sqlite3_pcache_page*)pcache1FetchWithMutex(p, iKey, createFlag); + }else #endif - - /* Step 3: Abort if createFlag is 1 but the cache is nearly full */ - assert( pCache->nPage >= pCache->nRecyclable ); - nPinned = pCache->nPage - pCache->nRecyclable; - assert( pGroup->mxPinned == pGroup->nMaxPage + 10 - pGroup->nMinPage ); - assert( pCache->n90pct == pCache->nMax*9/10 ); - if( createFlag==1 && ( - nPinned>=pGroup->mxPinned - || nPinned>=pCache->n90pct - || pcache1UnderMemoryPressure(pCache) - )){ - goto fetch_out; + { + return (sqlite3_pcache_page*)pcache1FetchNoMutex(p, iKey, createFlag); } - - if( pCache->nPage>=pCache->nHash && pcache1ResizeHash(pCache) ){ - goto fetch_out; - } - assert( pCache->nHash>0 && pCache->apHash ); - - /* Step 4. Try to recycle a page. */ - if( pCache->bPurgeable && pGroup->pLruTail && ( - (pCache->nPage+1>=pCache->nMax) - || pGroup->nCurrentPage>=pGroup->nMaxPage - || pcache1UnderMemoryPressure(pCache) - )){ - PCache1 *pOther; - pPage = pGroup->pLruTail; - assert( pPage->isPinned==0 ); - pcache1RemoveFromHash(pPage); - pcache1PinPage(pPage); - pOther = pPage->pCache; - - /* We want to verify that szPage and szExtra are the same for pOther - ** and pCache. Assert that we can verify this by comparing sums. */ - assert( (pCache->szPage & (pCache->szPage-1))==0 && pCache->szPage>=512 ); - assert( pCache->szExtra<512 ); - assert( (pOther->szPage & (pOther->szPage-1))==0 && pOther->szPage>=512 ); - assert( pOther->szExtra<512 ); - - if( pOther->szPage+pOther->szExtra != pCache->szPage+pCache->szExtra ){ - pcache1FreePage(pPage); - pPage = 0; - }else{ - pGroup->nCurrentPage -= (pOther->bPurgeable - pCache->bPurgeable); - } - } - - /* Step 5. If a usable page buffer has still not been found, - ** attempt to allocate a new one. - */ - if( !pPage ){ - if( createFlag==1 ) sqlite3BeginBenignMalloc(); - pPage = pcache1AllocPage(pCache); - if( createFlag==1 ) sqlite3EndBenignMalloc(); - } - - if( pPage ){ - unsigned int h = iKey % pCache->nHash; - pCache->nPage++; - pPage->iKey = iKey; - pPage->pNext = pCache->apHash[h]; - pPage->pCache = pCache; - pPage->pLruPrev = 0; - pPage->pLruNext = 0; - pPage->isPinned = 1; - *(void **)pPage->page.pExtra = 0; - pCache->apHash[h] = pPage; - } - -fetch_out: - if( pPage && iKey>pCache->iMaxKey ){ - pCache->iMaxKey = iKey; - } - pcache1LeaveMutex(pGroup); - return (sqlite3_pcache_page*)pPage; } @@ -38596,22 +45966,16 @@ static void pcache1Unpin( ** part of the PGroup LRU list. */ assert( pPage->pLruPrev==0 && pPage->pLruNext==0 ); - assert( pGroup->pLruHead!=pPage && pGroup->pLruTail!=pPage ); assert( pPage->isPinned==1 ); if( reuseUnlikely || pGroup->nCurrentPage>pGroup->nMaxPage ){ - pcache1RemoveFromHash(pPage); - pcache1FreePage(pPage); + pcache1RemoveFromHash(pPage, 1); }else{ /* Add the page to the PGroup LRU list. */ - if( pGroup->pLruHead ){ - pGroup->pLruHead->pLruPrev = pPage; - pPage->pLruNext = pGroup->pLruHead; - pGroup->pLruHead = pPage; - }else{ - pGroup->pLruTail = pPage; - pGroup->pLruHead = pPage; - } + PgHdr1 **ppFirst = &pGroup->lru.pLruNext; + pPage->pLruPrev = &pGroup->lru; + (pPage->pLruNext = *ppFirst)->pLruPrev = pPage; + *ppFirst = pPage; pCache->nRecyclable++; pPage->isPinned = 0; } @@ -38682,14 +46046,15 @@ static void pcache1Destroy(sqlite3_pcache *p){ PGroup *pGroup = pCache->pGroup; assert( pCache->bPurgeable || (pCache->nMax==0 && pCache->nMin==0) ); pcache1EnterMutex(pGroup); - pcache1TruncateUnsafe(pCache, 0); + if( pCache->nPage ) pcache1TruncateUnsafe(pCache, 0); assert( pGroup->nMaxPage >= pCache->nMax ); pGroup->nMaxPage -= pCache->nMax; assert( pGroup->nMinPage >= pCache->nMin ); pGroup->nMinPage -= pCache->nMin; pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pcache1EnforceMaxPage(pGroup); + pcache1EnforceMaxPage(pCache); pcache1LeaveMutex(pGroup); + sqlite3_free(pCache->pBulk); sqlite3_free(pCache->apHash); sqlite3_free(pCache); } @@ -38718,6 +46083,19 @@ SQLITE_PRIVATE void sqlite3PCacheSetDefault(void){ sqlite3_config(SQLITE_CONFIG_PCACHE2, &defaultMethods); } +/* +** Return the size of the header on each page of this PCACHE implementation. +*/ +SQLITE_PRIVATE int sqlite3HeaderSizePcache1(void){ return ROUND8(sizeof(PgHdr1)); } + +/* +** Return the global mutex used by this PCACHE implementation. The +** sqlite3_status() routine needs access to this mutex. +*/ +SQLITE_PRIVATE sqlite3_mutex *sqlite3Pcache1Mutex(void){ + return pcache1.mutex; +} + #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT /* ** This function is called to free superfluous dynamically allocated memory @@ -38732,18 +46110,20 @@ SQLITE_PRIVATE int sqlite3PcacheReleaseMemory(int nReq){ int nFree = 0; assert( sqlite3_mutex_notheld(pcache1.grp.mutex) ); assert( sqlite3_mutex_notheld(pcache1.mutex) ); - if( pcache1.pStart==0 ){ + if( sqlite3GlobalConfig.nPage==0 ){ PgHdr1 *p; pcache1EnterMutex(&pcache1.grp); - while( (nReq<0 || nFreeisAnchor==0 + ){ nFree += pcache1MemSize(p->page.pBuf); #ifdef SQLITE_PCACHE_SEPARATE_HEADER nFree += sqlite3MemSize(p); #endif assert( p->isPinned==0 ); pcache1PinPage(p); - pcache1RemoveFromHash(p); - pcache1FreePage(p); + pcache1RemoveFromHash(p, 1); } pcache1LeaveMutex(&pcache1.grp); } @@ -38764,7 +46144,7 @@ SQLITE_PRIVATE void sqlite3PcacheStats( ){ PgHdr1 *p; int nRecyclable = 0; - for(p=pcache1.grp.pLruHead; p; p=p->pLruNext){ + for(p=pcache1.grp.lru.pLruNext; p && !p->isAnchor; p=p->pLruNext){ assert( p->isPinned==0 ); nRecyclable++; } @@ -38829,16 +46209,18 @@ SQLITE_PRIVATE void sqlite3PcacheStats( ** No INSERTs may occurs after a SMALLEST. An assertion will fail if ** that is attempted. ** -** The cost of an INSERT is roughly constant. (Sometime new memory +** The cost of an INSERT is roughly constant. (Sometimes new memory ** has to be allocated on an INSERT.) The cost of a TEST with a new ** batch number is O(NlogN) where N is the number of elements in the RowSet. ** The cost of a TEST using the same batch number is O(logN). The cost ** of the first SMALLEST is O(NlogN). Second and subsequent SMALLEST ** primitives are constant time. The cost of DESTROY is O(N). ** -** There is an added cost of O(N) when switching between TEST and -** SMALLEST primitives. +** TEST and SMALLEST may not be used by the same RowSet. This used to +** be possible, but the feature was not used, so it was removed in order +** to simplify the code. */ +/* #include "sqliteInt.h" */ /* @@ -38890,8 +46272,8 @@ struct RowSet { struct RowSetEntry *pFresh; /* Source of new entry objects */ struct RowSetEntry *pForest; /* List of binary trees of entries */ u16 nFresh; /* Number of objects on pFresh */ - u8 rsFlags; /* Various flags */ - u8 iBatch; /* Current insert batch */ + u16 rsFlags; /* Various flags */ + int iBatch; /* Current insert batch */ }; /* @@ -38957,9 +46339,11 @@ SQLITE_PRIVATE void sqlite3RowSetClear(RowSet *p){ */ static struct RowSetEntry *rowSetEntryAlloc(RowSet *p){ assert( p!=0 ); - if( p->nFresh==0 ){ + if( p->nFresh==0 ){ /*OPTIMIZATION-IF-FALSE*/ + /* We could allocate a fresh RowSetEntry each time one is needed, but it + ** is more efficient to pull a preallocated entry from the pool */ struct RowSetChunk *pNew; - pNew = sqlite3DbMallocRaw(p->db, sizeof(*pNew)); + pNew = sqlite3DbMallocRawNN(p->db, sizeof(*pNew)); if( pNew==0 ){ return 0; } @@ -38991,7 +46375,9 @@ SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet *p, i64 rowid){ pEntry->pRight = 0; pLast = p->pLast; if( pLast ){ - if( (p->rsFlags & ROWSET_SORTED)!=0 && rowid<=pLast->v ){ + if( rowid<=pLast->v ){ /*OPTIMIZATION-IF-FALSE*/ + /* Avoid unnecessary sorts by preserving the ROWSET_SORTED flags + ** where possible */ p->rsFlags &= ~ROWSET_SORTED; } pLast->pRight = pEntry; @@ -39015,28 +46401,26 @@ static struct RowSetEntry *rowSetEntryMerge( struct RowSetEntry *pTail; pTail = &head; - while( pA && pB ){ + assert( pA!=0 && pB!=0 ); + for(;;){ assert( pA->pRight==0 || pA->v<=pA->pRight->v ); assert( pB->pRight==0 || pB->v<=pB->pRight->v ); - if( pA->vv ){ - pTail->pRight = pA; + if( pA->v<=pB->v ){ + if( pA->vv ) pTail = pTail->pRight = pA; pA = pA->pRight; - pTail = pTail->pRight; - }else if( pB->vv ){ - pTail->pRight = pB; - pB = pB->pRight; - pTail = pTail->pRight; + if( pA==0 ){ + pTail->pRight = pB; + break; + } }else{ - pA = pA->pRight; + pTail = pTail->pRight = pB; + pB = pB->pRight; + if( pB==0 ){ + pTail->pRight = pA; + break; + } } } - if( pA ){ - assert( pA->pRight==0 || pA->v<=pA->pRight->v ); - pTail->pRight = pA; - }else{ - assert( pB==0 || pB->pRight==0 || pB->v<=pB->pRight->v ); - pTail->pRight = pB; - } return head.pRight; } @@ -39059,9 +46443,10 @@ static struct RowSetEntry *rowSetEntrySort(struct RowSetEntry *pIn){ aBucket[i] = pIn; pIn = pNext; } - pIn = 0; - for(i=0; i1 ){ /*OPTIMIZATION-IF-TRUE*/ + /* This branch causes a *balanced* tree to be generated. A valid tree + ** is still generated without this branch, but the tree is wildly + ** unbalanced and inefficient. */ + pLeft = rowSetNDeepTree(ppList, iDepth-1); + p = *ppList; + if( p==0 ){ /*OPTIMIZATION-IF-FALSE*/ + /* It is safe to always return here, but the resulting tree + ** would be unbalanced */ + return pLeft; + } + p->pLeft = pLeft; + *ppList = p->pRight; + p->pRight = rowSetNDeepTree(ppList, iDepth-1); + }else{ p = *ppList; *ppList = p->pRight; p->pLeft = p->pRight = 0; - return p; } - pLeft = rowSetNDeepTree(ppList, iDepth-1); - p = *ppList; - if( p==0 ){ - return pLeft; - } - p->pLeft = pLeft; - *ppList = p->pRight; - p->pRight = rowSetNDeepTree(ppList, iDepth-1); return p; } @@ -39156,59 +46547,37 @@ static struct RowSetEntry *rowSetListToTree(struct RowSetEntry *pList){ return p; } -/* -** Take all the entries on p->pEntry and on the trees in p->pForest and -** sort them all together into one big ordered list on p->pEntry. -** -** This routine should only be called once in the life of a RowSet. -*/ -static void rowSetToList(RowSet *p){ - - /* This routine is called only once */ - assert( p!=0 && (p->rsFlags & ROWSET_NEXT)==0 ); - - if( (p->rsFlags & ROWSET_SORTED)==0 ){ - p->pEntry = rowSetEntrySort(p->pEntry); - } - - /* While this module could theoretically support it, sqlite3RowSetNext() - ** is never called after sqlite3RowSetText() for the same RowSet. So - ** there is never a forest to deal with. Should this change, simply - ** remove the assert() and the #if 0. */ - assert( p->pForest==0 ); -#if 0 - while( p->pForest ){ - struct RowSetEntry *pTree = p->pForest->pLeft; - if( pTree ){ - struct RowSetEntry *pHead, *pTail; - rowSetTreeToList(pTree, &pHead, &pTail); - p->pEntry = rowSetEntryMerge(p->pEntry, pHead); - } - p->pForest = p->pForest->pRight; - } -#endif - p->rsFlags |= ROWSET_NEXT; /* Verify this routine is never called again */ -} - /* ** Extract the smallest element from the RowSet. ** Write the element into *pRowid. Return 1 on success. Return ** 0 if the RowSet is already empty. ** ** After this routine has been called, the sqlite3RowSetInsert() -** routine may not be called again. +** routine may not be called again. +** +** This routine may not be called after sqlite3RowSetTest() has +** been used. Older versions of RowSet allowed that, but as the +** capability was not used by the code generator, it was removed +** for code economy. */ SQLITE_PRIVATE int sqlite3RowSetNext(RowSet *p, i64 *pRowid){ assert( p!=0 ); + assert( p->pForest==0 ); /* Cannot be used with sqlite3RowSetText() */ /* Merge the forest into a single sorted list on first call */ - if( (p->rsFlags & ROWSET_NEXT)==0 ) rowSetToList(p); + if( (p->rsFlags & ROWSET_NEXT)==0 ){ /*OPTIMIZATION-IF-FALSE*/ + if( (p->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/ + p->pEntry = rowSetEntrySort(p->pEntry); + } + p->rsFlags |= ROWSET_SORTED|ROWSET_NEXT; + } /* Return the next entry on the list */ if( p->pEntry ){ *pRowid = p->pEntry->v; p->pEntry = p->pEntry->pRight; - if( p->pEntry==0 ){ + if( p->pEntry==0 ){ /*OPTIMIZATION-IF-TRUE*/ + /* Free memory immediately, rather than waiting on sqlite3_finalize() */ sqlite3RowSetClear(p); } return 1; @@ -39221,23 +46590,25 @@ SQLITE_PRIVATE int sqlite3RowSetNext(RowSet *p, i64 *pRowid){ ** Check to see if element iRowid was inserted into the rowset as ** part of any insert batch prior to iBatch. Return 1 or 0. ** -** If this is the first test of a new batch and if there exist entires -** on pRowSet->pEntry, then sort those entires into the forest at +** If this is the first test of a new batch and if there exist entries +** on pRowSet->pEntry, then sort those entries into the forest at ** pRowSet->pForest so that they can be tested. */ -SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 iRowid){ +SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 iRowid){ struct RowSetEntry *p, *pTree; /* This routine is never called after sqlite3RowSetNext() */ assert( pRowSet!=0 && (pRowSet->rsFlags & ROWSET_NEXT)==0 ); - /* Sort entries into the forest on the first test of a new batch + /* Sort entries into the forest on the first test of a new batch. + ** To save unnecessary work, only do this when the batch number changes. */ - if( iBatch!=pRowSet->iBatch ){ + if( iBatch!=pRowSet->iBatch ){ /*OPTIMIZATION-IF-FALSE*/ p = pRowSet->pEntry; if( p ){ struct RowSetEntry **ppPrevTree = &pRowSet->pForest; - if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ + if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/ + /* Only sort the current set of entiries if they need it */ p = rowSetEntrySort(p); } for(pTree = pRowSet->pForest; pTree; pTree=pTree->pRight){ @@ -39308,6 +46679,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 i ** another is writing. */ #ifndef SQLITE_OMIT_DISKIO +/* #include "sqliteInt.h" */ /************** Include wal.h in the middle of pager.c ***********************/ /************** Begin file wal.h *********************************************/ /* @@ -39326,9 +46698,10 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 i ** the implementation of each function in log.c for further details. */ -#ifndef _WAL_H_ -#define _WAL_H_ +#ifndef SQLITE_WAL_H +#define SQLITE_WAL_H +/* #include "sqliteInt.h" */ /* Additional values that can be added to the sync_flags argument of ** sqlite3WalFrames(): @@ -39339,7 +46712,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 i #ifdef SQLITE_OMIT_WAL # define sqlite3WalOpen(x,y,z) 0 # define sqlite3WalLimit(x,y) -# define sqlite3WalClose(w,x,y,z) 0 +# define sqlite3WalClose(v,w,x,y,z) 0 # define sqlite3WalBeginReadTransaction(y,z) 0 # define sqlite3WalEndReadTransaction(z) # define sqlite3WalDbsize(y) 0 @@ -39349,12 +46722,13 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 i # define sqlite3WalSavepoint(y,z) # define sqlite3WalSavepointUndo(y,z) 0 # define sqlite3WalFrames(u,v,w,x,y,z) 0 -# define sqlite3WalCheckpoint(r,s,t,u,v,w,x,y,z) 0 +# define sqlite3WalCheckpoint(q,r,s,t,u,v,w,x,y,z) 0 # define sqlite3WalCallback(z) 0 # define sqlite3WalExclusiveMode(y,z) 0 # define sqlite3WalHeapMemory(z) 0 # define sqlite3WalFramesize(z) 0 # define sqlite3WalFindFrame(x,y,z) 0 +# define sqlite3WalFile(x) 0 #else #define WAL_SAVEPOINT_NDATA 4 @@ -39366,7 +46740,7 @@ typedef struct Wal Wal; /* Open and close a connection to a write-ahead log. */ SQLITE_PRIVATE int sqlite3WalOpen(sqlite3_vfs*, sqlite3_file*, const char *, int, i64, Wal**); -SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, int sync_flags, int, u8 *); +SQLITE_PRIVATE int sqlite3WalClose(Wal *pWal, sqlite3*, int sync_flags, int, u8 *); /* Set the limiting size of a WAL file. */ SQLITE_PRIVATE void sqlite3WalLimit(Wal*, i64); @@ -39409,6 +46783,7 @@ SQLITE_PRIVATE int sqlite3WalFrames(Wal *pWal, int, PgHdr *, Pgno, int, int); /* Copy pages from the log to the database file */ SQLITE_PRIVATE int sqlite3WalCheckpoint( Wal *pWal, /* Write-ahead log connection */ + sqlite3 *db, /* Check this handle's interrupt flag */ int eMode, /* One of PASSIVE, FULL and RESTART */ int (*xBusy)(void*), /* Function to call when busy */ void *pBusyArg, /* Context argument for xBusyHandler */ @@ -39437,6 +46812,12 @@ SQLITE_PRIVATE int sqlite3WalExclusiveMode(Wal *pWal, int op); */ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal); +#ifdef SQLITE_ENABLE_SNAPSHOT +SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapshot); +SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot); +SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal); +#endif + #ifdef SQLITE_ENABLE_ZIPVFS /* If the WAL file is not empty, return the number of bytes of content ** stored in each frame (i.e. the db page-size when the WAL was created). @@ -39444,8 +46825,11 @@ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal); SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal); #endif +/* Return the sqlite3_file object for the WAL file */ +SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal); + #endif /* ifndef SQLITE_OMIT_WAL */ -#endif /* _WAL_H_ */ +#endif /* SQLITE_WAL_H */ /************** End of wal.h *************************************************/ /************** Continuing where we left off in pager.c **********************/ @@ -39504,12 +46888,12 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal); ** Definition: Two databases (or the same database at two points it time) ** are said to be "logically equivalent" if they give the same answer to ** all queries. Note in particular the content of freelist leaf -** pages can be changed arbitarily without effecting the logical equivalence +** pages can be changed arbitrarily without affecting the logical equivalence ** of the database. ** ** (7) At any time, if any subset, including the empty set and the total set, ** of the unsynced changes to a rollback journal are removed and the -** journal is rolled back, the resulting database file will be logical +** journal is rolled back, the resulting database file will be logically ** equivalent to the database file at the beginning of the transaction. ** ** (8) When a transaction is rolled back, the xTruncate method of the VFS @@ -39806,7 +47190,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ ** ** The exception is when the database file is unlocked as the pager moves ** from ERROR to OPEN state. At this point there may be a hot-journal file -** in the file-system that needs to be rolled back (as part of a OPEN->SHARED +** in the file-system that needs to be rolled back (as part of an OPEN->SHARED ** transition, by the same pager or any other). If the call to xUnlock() ** fails at this point and the pager is left holding an EXCLUSIVE lock, this ** can confuse the call to xCheckReservedLock() call made later as part @@ -39856,6 +47240,7 @@ int sqlite3PagerTrace=1; /* True to enable tracing */ */ #define MAX_SECTOR_SIZE 0x10000 + /* ** An instance of the following structure is allocated for each active ** savepoint and statement transaction in the system. All such structures @@ -39884,12 +47269,12 @@ struct PagerSavepoint { /* ** Bits of the Pager.doNotSpill flag. See further description below. */ -#define SPILLFLAG_OFF 0x01 /* Never spill cache. Set via pragma */ -#define SPILLFLAG_ROLLBACK 0x02 /* Current rolling back, so do not spill */ -#define SPILLFLAG_NOSYNC 0x04 /* Spill is ok, but do not sync */ +#define SPILLFLAG_OFF 0x01 /* Never spill cache. Set via pragma */ +#define SPILLFLAG_ROLLBACK 0x02 /* Current rolling back, so do not spill */ +#define SPILLFLAG_NOSYNC 0x04 /* Spill is ok, but do not sync */ /* -** A open page cache is an instance of struct Pager. A description of +** An open page cache is an instance of struct Pager. A description of ** some of the more important member variables follows: ** ** eState @@ -39968,11 +47353,11 @@ struct PagerSavepoint { ** while it is being traversed by code in pager_playback(). The SPILLFLAG_OFF ** case is a user preference. ** -** If the SPILLFLAG_NOSYNC bit is set, writing to the database from pagerStress() -** is permitted, but syncing the journal file is not. This flag is set -** by sqlite3PagerWrite() when the file-system sector-size is larger than -** the database page-size in order to prevent a journal sync from happening -** in between the journalling of two pages on the same sector. +** If the SPILLFLAG_NOSYNC bit is set, writing to the database from +** pagerStress() is permitted, but syncing the journal file is not. +** This flag is set by sqlite3PagerWrite() when the file-system sector-size +** is larger than the database page-size in order to prevent a journal sync +** from happening in between the journalling of two pages on the same sector. ** ** subjInMemory ** @@ -40051,16 +47436,18 @@ struct Pager { u8 useJournal; /* Use a rollback journal on this file */ u8 noSync; /* Do not sync the journal if true */ u8 fullSync; /* Do extra syncs of the journal for robustness */ + u8 extraSync; /* sync directory after journal delete */ u8 ckptSyncFlags; /* SYNC_NORMAL or SYNC_FULL for checkpoint */ u8 walSyncFlags; /* SYNC_NORMAL or SYNC_FULL for wal writes */ u8 syncFlags; /* SYNC_NORMAL or SYNC_FULL otherwise */ - u8 tempFile; /* zFilename is a temporary file */ + u8 tempFile; /* zFilename is a temporary or immutable file */ + u8 noLock; /* Do not lock (except in WAL mode) */ u8 readOnly; /* True for a read-only database */ u8 memDb; /* True to inhibit all file I/O */ /************************************************************************** ** The following block contains those class members that change during - ** routine opertion. Class members not in this block are either fixed + ** routine operation. Class members not in this block are either fixed ** when the pager is first created or else only change when there is a ** significant mode change (such as changing the page_size, locking_mode, ** or the journal_mode). From another view, these class members describe @@ -40073,6 +47460,8 @@ struct Pager { u8 setMaster; /* True if a m-j name has been written to jrnl */ u8 doNotSpill; /* Do not spill the cache when non-zero */ u8 subjInMemory; /* True to use in-memory sub-journals */ + u8 bUseFetch; /* True to use xFetch() */ + u8 hasHeldSharedLock; /* True if a shared lock has ever been held */ Pgno dbSize; /* Number of pages in the database */ Pgno dbOrigSize; /* dbSize before the current transaction */ Pgno dbFileSize; /* Number of pages in the database file */ @@ -40090,9 +47479,9 @@ struct Pager { sqlite3_backup *pBackup; /* Pointer to list of ongoing backup processes */ PagerSavepoint *aSavepoint; /* Array of active savepoints */ int nSavepoint; /* Number of elements in aSavepoint[] */ + u32 iDataVersion; /* Changes whenever database content changes */ char dbFileVers[16]; /* Changes whenever database file changes */ - u8 bUseFetch; /* True to use xFetch() */ int nMmapOut; /* Number of mmap pages currently outstanding */ sqlite3_int64 szMmap; /* Desired maximum mmap size */ PgHdr *pMmapFreelist; /* List of free mmap page headers (pDirty) */ @@ -40116,6 +47505,7 @@ struct Pager { int nRead; /* Database pages read */ #endif void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */ + int (*xGet)(Pager*,Pgno,DbPage**,int); /* Routine to fetch a patch */ #ifdef SQLITE_HAS_CODEC void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */ void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */ @@ -40233,16 +47623,23 @@ static const unsigned char aJournalMagic[] = { ** ** if( pPager->jfd->pMethods ){ ... */ -#define isOpen(pFd) ((pFd)->pMethods) +#define isOpen(pFd) ((pFd)->pMethods!=0) /* -** Return true if this pager uses a write-ahead log instead of the usual -** rollback journal. Otherwise false. +** Return true if this pager uses a write-ahead log to read page pgno. +** Return false if the pager reads pgno directly from the database. */ -#ifndef SQLITE_OMIT_WAL -static int pagerUseWal(Pager *pPager){ - return (pPager->pWal!=0); +#if !defined(SQLITE_OMIT_WAL) && defined(SQLITE_DIRECT_OVERFLOW_READ) +SQLITE_PRIVATE int sqlite3PagerUseWal(Pager *pPager, Pgno pgno){ + u32 iRead = 0; + int rc; + if( pPager->pWal==0 ) return 0; + rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iRead); + return rc || iRead; } +#endif +#ifndef SQLITE_OMIT_WAL +# define pagerUseWal(x) ((x)->pWal!=0) #else # define pagerUseWal(x) 0 # define pagerRollbackWal(x) 0 @@ -40295,6 +47692,7 @@ static int assert_pager_state(Pager *p){ ** state. */ if( MEMDB ){ + assert( !isOpen(p->fd) ); assert( p->noSync ); assert( p->journalMode==PAGER_JOURNALMODE_OFF || p->journalMode==PAGER_JOURNALMODE_MEMORY @@ -40381,7 +47779,7 @@ static int assert_pager_state(Pager *p){ ** back to OPEN state. */ assert( pPager->errCode!=SQLITE_OK ); - assert( sqlite3PcacheRefCount(pPager->pPCache)>0 ); + assert( sqlite3PcacheRefCount(pPager->pPCache)>0 || pPager->tempFile ); break; } @@ -40440,6 +47838,33 @@ static char *print_pager_state(Pager *p){ } #endif +/* Forward references to the various page getters */ +static int getPageNormal(Pager*,Pgno,DbPage**,int); +static int getPageError(Pager*,Pgno,DbPage**,int); +#if SQLITE_MAX_MMAP_SIZE>0 +static int getPageMMap(Pager*,Pgno,DbPage**,int); +#endif + +/* +** Set the Pager.xGet method for the appropriate routine used to fetch +** content from the pager. +*/ +static void setGetterMethod(Pager *pPager){ + if( pPager->errCode ){ + pPager->xGet = getPageError; +#if SQLITE_MAX_MMAP_SIZE>0 + }else if( USEFETCH(pPager) +#ifdef SQLITE_HAS_CODEC + && pPager->xCodec==0 +#endif + ){ + pPager->xGet = getPageMMap; +#endif /* SQLITE_MAX_MMAP_SIZE>0 */ + }else{ + pPager->xGet = getPageNormal; + } +} + /* ** Return true if it is necessary to write page *pPg into the sub-journal. ** A page needs to be written into the sub-journal if there exists one @@ -40456,19 +47881,21 @@ static int subjRequiresPage(PgHdr *pPg){ int i; for(i=0; inSavepoint; i++){ p = &pPager->aSavepoint[i]; - if( p->nOrig>=pgno && 0==sqlite3BitvecTest(p->pInSavepoint, pgno) ){ + if( p->nOrig>=pgno && 0==sqlite3BitvecTestNotNull(p->pInSavepoint, pgno) ){ return 1; } } return 0; } +#ifdef SQLITE_DEBUG /* ** Return true if the page is already in the journal file. */ static int pageInJournal(Pager *pPager, PgHdr *pPg){ return sqlite3BitvecTest(pPager->pInJournal, pPg->pgno); } +#endif /* ** Read a 32-bit integer from the given file descriptor. Store the integer @@ -40519,7 +47946,7 @@ static int pagerUnlockDb(Pager *pPager, int eLock){ assert( eLock!=NO_LOCK || pagerUseWal(pPager)==0 ); if( isOpen(pPager->fd) ){ assert( pPager->eLock>=eLock ); - rc = sqlite3OsUnlock(pPager->fd, eLock); + rc = pPager->noLock ? SQLITE_OK : sqlite3OsUnlock(pPager->fd, eLock); if( pPager->eLock!=UNKNOWN_LOCK ){ pPager->eLock = (u8)eLock; } @@ -40543,7 +47970,7 @@ static int pagerLockDb(Pager *pPager, int eLock){ assert( eLock==SHARED_LOCK || eLock==RESERVED_LOCK || eLock==EXCLUSIVE_LOCK ); if( pPager->eLockeLock==UNKNOWN_LOCK ){ - rc = sqlite3OsLock(pPager->fd, eLock); + rc = pPager->noLock ? SQLITE_OK : sqlite3OsLock(pPager->fd, eLock); if( rc==SQLITE_OK && (pPager->eLock!=UNKNOWN_LOCK||eLock==EXCLUSIVE_LOCK) ){ pPager->eLock = (u8)eLock; IOTRACE(("LOCK %p %d\n", pPager, eLock)) @@ -40591,6 +48018,8 @@ static int jrnlBufferSize(Pager *pPager){ return JOURNAL_HDR_SZ(pPager) + JOURNAL_PG_SZ(pPager); } +#else +# define jrnlBufferSize(x) 0 #endif /* @@ -40751,6 +48180,7 @@ static i64 journalHdrOffset(Pager *pPager){ static int zeroJournalHdr(Pager *pPager, int doTruncate){ int rc = SQLITE_OK; /* Return code */ assert( isOpen(pPager->jfd) ); + assert( !sqlite3JournalIsInMemory(pPager->jfd) ); if( pPager->journalOff ){ const i64 iLimit = pPager->journalSizeLimit; /* Local cache of jsl */ @@ -41052,12 +48482,11 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){ if( !zMaster || pPager->journalMode==PAGER_JOURNALMODE_MEMORY - || pPager->journalMode==PAGER_JOURNALMODE_OFF + || !isOpen(pPager->jfd) ){ return SQLITE_OK; } pPager->setMaster = 1; - assert( isOpen(pPager->jfd) ); assert( pPager->journalHdr <= pPager->journalOff ); /* Calculate the length in bytes and the checksum of zMaster */ @@ -41081,7 +48510,8 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){ || (0 != (rc = sqlite3OsWrite(pPager->jfd, zMaster, nMaster, iHdrOff+4))) || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster, nMaster))) || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster+4, cksum))) - || (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8, iHdrOff+4+nMaster+8))) + || (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8, + iHdrOff+4+nMaster+8))) ){ return rc; } @@ -41105,29 +48535,23 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){ return rc; } -/* -** Find a page in the hash table given its page number. Return -** a pointer to the page or NULL if the requested page is not -** already in memory. -*/ -static PgHdr *pager_lookup(Pager *pPager, Pgno pgno){ - PgHdr *p = 0; /* Return value */ - - /* It is not possible for a call to PcacheFetch() with createFlag==0 to - ** fail, since no attempt to allocate dynamic memory will be made. - */ - (void)sqlite3PcacheFetch(pPager->pPCache, pgno, 0, &p); - return p; -} - /* ** Discard the entire contents of the in-memory page-cache. */ static void pager_reset(Pager *pPager){ + pPager->iDataVersion++; sqlite3BackupRestart(pPager->pBackup); sqlite3PcacheClear(pPager->pPCache); } +/* +** Return the pPager->iDataVersion value +*/ +SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager *pPager){ + assert( pPager->eState>PAGER_OPEN ); + return pPager->iDataVersion; +} + /* ** Free all structures in the Pager.aSavepoint[] array and set both ** Pager.aSavepoint and Pager.nSavepoint to zero. Close the sub-journal @@ -41138,7 +48562,7 @@ static void releaseAllSavepoints(Pager *pPager){ for(ii=0; iinSavepoint; ii++){ sqlite3BitvecDestroy(pPager->aSavepoint[ii].pInSavepoint); } - if( !pPager->exclusiveMode || sqlite3IsMemJournal(pPager->sjfd) ){ + if( !pPager->exclusiveMode || sqlite3JournalIsInMemory(pPager->sjfd) ){ sqlite3OsClose(pPager->sjfd); } sqlite3_free(pPager->aSavepoint); @@ -41244,13 +48668,18 @@ static void pager_unlock(Pager *pPager){ ** it can safely move back to PAGER_OPEN state. This happens in both ** normal and exclusive-locking mode. */ + assert( pPager->errCode==SQLITE_OK || !MEMDB ); if( pPager->errCode ){ - assert( !MEMDB ); - pager_reset(pPager); - pPager->changeCountDone = pPager->tempFile; - pPager->eState = PAGER_OPEN; - pPager->errCode = SQLITE_OK; + if( pPager->tempFile==0 ){ + pager_reset(pPager); + pPager->changeCountDone = 0; + pPager->eState = PAGER_OPEN; + }else{ + pPager->eState = (isOpen(pPager->jfd) ? PAGER_OPEN : PAGER_READER); + } if( USEFETCH(pPager) ) sqlite3OsUnfetch(pPager->fd, 0, 0); + pPager->errCode = SQLITE_OK; + setGetterMethod(pPager); } pPager->journalOff = 0; @@ -41288,12 +48717,36 @@ static int pager_error(Pager *pPager, int rc){ if( rc2==SQLITE_FULL || rc2==SQLITE_IOERR ){ pPager->errCode = rc; pPager->eState = PAGER_ERROR; + setGetterMethod(pPager); } return rc; } static int pager_truncate(Pager *pPager, Pgno nPage); +/* +** The write transaction open on pPager is being committed (bCommit==1) +** or rolled back (bCommit==0). +** +** Return TRUE if and only if all dirty pages should be flushed to disk. +** +** Rules: +** +** * For non-TEMP databases, always sync to disk. This is necessary +** for transactions to be durable. +** +** * Sync TEMP database only on a COMMIT (not a ROLLBACK) when the backing +** file has been created already (via a spill on pagerStress()) and +** when the number of dirty pages in memory exceeds 25% of the total +** cache size. +*/ +static int pagerFlushOnCommit(Pager *pPager, int bCommit){ + if( pPager->tempFile==0 ) return 1; + if( !bCommit ) return 0; + if( !isOpen(pPager->fd) ) return 0; + return (sqlite3PCachePercentDirty(pPager->pPCache)>=25); +} + /* ** This routine ends a transaction. A transaction is usually ended by ** either a COMMIT or a ROLLBACK operation. This routine may be called @@ -41376,35 +48829,44 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ assert( !pagerUseWal(pPager) ); /* Finalize the journal file. */ - if( sqlite3IsMemJournal(pPager->jfd) ){ - assert( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ); + if( sqlite3JournalIsInMemory(pPager->jfd) ){ + /* assert( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ); */ sqlite3OsClose(pPager->jfd); }else if( pPager->journalMode==PAGER_JOURNALMODE_TRUNCATE ){ if( pPager->journalOff==0 ){ rc = SQLITE_OK; }else{ rc = sqlite3OsTruncate(pPager->jfd, 0); + if( rc==SQLITE_OK && pPager->fullSync ){ + /* Make sure the new file size is written into the inode right away. + ** Otherwise the journal might resurrect following a power loss and + ** cause the last transaction to roll back. See + ** https://bugzilla.mozilla.org/show_bug.cgi?id=1072773 + */ + rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags); + } } pPager->journalOff = 0; }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL) ){ - rc = zeroJournalHdr(pPager, hasMaster); + rc = zeroJournalHdr(pPager, hasMaster||pPager->tempFile); pPager->journalOff = 0; }else{ /* This branch may be executed with Pager.journalMode==MEMORY if ** a hot-journal was just rolled back. In this case the journal ** file should be closed and deleted. If this connection writes to - ** the database file, it will do so using an in-memory journal. + ** the database file, it will do so using an in-memory journal. */ - int bDelete = (!pPager->tempFile && sqlite3JournalExists(pPager->jfd)); + int bDelete = !pPager->tempFile; + assert( sqlite3JournalIsInMemory(pPager->jfd)==0 ); assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE || pPager->journalMode==PAGER_JOURNALMODE_MEMORY || pPager->journalMode==PAGER_JOURNALMODE_WAL ); sqlite3OsClose(pPager->jfd); if( bDelete ){ - rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0); + rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, pPager->extraSync); } } } @@ -41412,7 +48874,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ #ifdef SQLITE_CHECK_PAGES sqlite3PcacheIterateDirty(pPager->pPCache, pager_set_pagehash); if( pPager->dbSize==0 && sqlite3PcacheRefCount(pPager->pPCache)>0 ){ - PgHdr *p = pager_lookup(pPager, 1); + PgHdr *p = sqlite3PagerLookup(pPager, 1); if( p ){ p->pageHash = 0; sqlite3PagerUnrefNotNull(p); @@ -41423,8 +48885,14 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){ sqlite3BitvecDestroy(pPager->pInJournal); pPager->pInJournal = 0; pPager->nRec = 0; - sqlite3PcacheCleanAll(pPager->pPCache); - sqlite3PcacheTruncate(pPager->pPCache, pPager->dbSize); + if( rc==SQLITE_OK ){ + if( MEMDB || pagerFlushOnCommit(pPager, bCommit) ){ + sqlite3PcacheCleanAll(pPager->pPCache); + }else{ + sqlite3PcacheClearWritable(pPager->pPCache); + } + sqlite3PcacheTruncate(pPager->pPCache, pPager->dbSize); + } if( pagerUseWal(pPager) ){ /* Drop the WAL write-lock, if any. Also, if the connection was in @@ -41537,6 +49005,20 @@ static void pagerReportSize(Pager *pPager){ # define pagerReportSize(X) /* No-op if we do not support a codec */ #endif +#ifdef SQLITE_HAS_CODEC +/* +** Make sure the number of reserved bits is the same in the destination +** pager as it is in the source. This comes up when a VACUUM changes the +** number of reserved bits to the "optimal" amount. +*/ +SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){ + if( pDest->nReserve!=pSrc->nReserve ){ + pDest->nReserve = pSrc->nReserve; + pagerReportSize(pDest); + } +} +#endif + /* ** Read a single page from either the journal file (if isMainJrnl==1) or ** from the sub-journal (if isMainJrnl==0) and playback that page. @@ -41639,7 +49121,7 @@ static int pager_playback_one_page( } } - /* If this page has already been played by before during the current + /* If this page has already been played back before during the current ** rollback, then don't bother to play it back again. */ if( pDone && (rc = sqlite3BitvecSet(pDone, pgno))!=SQLITE_OK ){ @@ -41691,10 +49173,10 @@ static int pager_playback_one_page( if( pagerUseWal(pPager) ){ pPg = 0; }else{ - pPg = pager_lookup(pPager, pgno); + pPg = sqlite3PagerLookup(pPager, pgno); } assert( pPg || !MEMDB ); - assert( pPager->eState!=PAGER_OPEN || pPg==0 ); + assert( pPager->eState!=PAGER_OPEN || pPg==0 || pPager->tempFile ); PAGERTRACE(("PLAYBACK %d page %d hash(%08x) %s\n", PAGERID(pPager), pgno, pager_datahash(pPager->pageSize, (u8*)aData), (isMainJrnl?"main-journal":"sub-journal") @@ -41716,9 +49198,9 @@ static int pager_playback_one_page( pPager->dbFileSize = pgno; } if( pPager->pBackup ){ - CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM); + CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT); sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData); - CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM, aData); + CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT, aData); } }else if( !isMainJrnl && pPg==0 ){ /* If this is a rollback of a savepoint and data was not written to @@ -41740,11 +49222,10 @@ static int pager_playback_one_page( assert( isSavepnt ); assert( (pPager->doNotSpill & SPILLFLAG_ROLLBACK)==0 ); pPager->doNotSpill |= SPILLFLAG_ROLLBACK; - rc = sqlite3PagerAcquire(pPager, pgno, &pPg, 1); + rc = sqlite3PagerGet(pPager, pgno, &pPg, 1); assert( (pPager->doNotSpill & SPILLFLAG_ROLLBACK)!=0 ); pPager->doNotSpill &= ~SPILLFLAG_ROLLBACK; if( rc!=SQLITE_OK ) return rc; - pPg->flags &= ~PGHDR_NEED_READ; sqlite3PcacheMakeDirty(pPg); } if( pPg ){ @@ -41758,29 +49239,10 @@ static int pager_playback_one_page( pData = pPg->pData; memcpy(pData, (u8*)aData, pPager->pageSize); pPager->xReiniter(pPg); - if( isMainJrnl && (!isSavepnt || *pOffset<=pPager->journalHdr) ){ - /* If the contents of this page were just restored from the main - ** journal file, then its content must be as they were when the - ** transaction was first opened. In this case we can mark the page - ** as clean, since there will be no need to write it out to the - ** database. - ** - ** There is one exception to this rule. If the page is being rolled - ** back as part of a savepoint (or statement) rollback from an - ** unsynced portion of the main journal file, then it is not safe - ** to mark the page as clean. This is because marking the page as - ** clean will clear the PGHDR_NEED_SYNC flag. Since the page is - ** already in the journal file (recorded in Pager.pInJournal) and - ** the PGHDR_NEED_SYNC flag is cleared, if the page is written to - ** again within this transaction, it will be marked as dirty but - ** the PGHDR_NEED_SYNC flag will not be set. It could then potentially - ** be written out into the database file before its journal file - ** segment is synced. If a crash occurs during or following this, - ** database corruption may ensue. - */ - assert( !pagerUseWal(pPager) ); - sqlite3PcacheMakeClean(pPg); - } + /* It used to be that sqlite3PcacheMakeClean(pPg) was called here. But + ** that call was dangerous and had no detectable benefit since the cache + ** is normally cleaned by sqlite3PcacheCleanAll() after rollback and so + ** has been removed. */ pager_set_pagehash(pPg); /* If this was page 1, then restore the value of Pager.dbFileVers. @@ -41790,7 +49252,7 @@ static int pager_playback_one_page( } /* Decode the page just read from disk */ - CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM); + CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM_BKPT); sqlite3PcacheRelease(pPg); } return rc; @@ -41856,7 +49318,7 @@ static int pager_delmaster(Pager *pPager, const char *zMaster){ pMaster = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2); pJournal = (sqlite3_file *)(((u8 *)pMaster) + pVfs->szOsFile); if( !pMaster ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MASTER_JOURNAL); rc = sqlite3OsOpen(pVfs, zMaster, pMaster, flags, 0); @@ -41871,9 +49333,9 @@ static int pager_delmaster(Pager *pPager, const char *zMaster){ rc = sqlite3OsFileSize(pMaster, &nMasterJournal); if( rc!=SQLITE_OK ) goto delmaster_out; nMasterPtr = pVfs->mxPathname+1; - zMasterJournal = sqlite3Malloc((int)nMasterJournal + nMasterPtr + 1); + zMasterJournal = sqlite3Malloc(nMasterJournal + nMasterPtr + 1); if( !zMasterJournal ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto delmaster_out; } zMasterPtr = &zMasterJournal[nMasterJournal+1]; @@ -41940,7 +49402,7 @@ delmaster_out: ** If the file on disk is currently larger than nPage pages, then use the VFS ** xTruncate() method to truncate it. ** -** Or, it might might be the case that the file on disk is smaller than +** Or, it might be the case that the file on disk is smaller than ** nPage pages. Some operating system implementations can get confused if ** you try to truncate a file to some size that is larger than it ** currently is, so detect this case and write a single zero byte to @@ -41999,7 +49461,7 @@ SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *pFile){ /* ** Set the value of the Pager.sectorSize variable for the given ** pager based on the value returned by the xSectorSize method -** of the open database file. The sector size will be used used +** of the open database file. The sector size will be used ** to determine the size and alignment of journal header and ** master journal pointers within created journal files. ** @@ -42121,7 +49583,7 @@ static int pager_playback(Pager *pPager, int isHot){ ** TODO: Technically the following is an error because it assumes that ** buffer Pager.pTmpSpace is (mxPathname+1) bytes or larger. i.e. that ** (pPager->pageSize >= pPager->pVfs->mxPathname+1). Using os_unix.c, - ** mxPathname is 512, which is the same as the minimum allowable value + ** mxPathname is 512, which is the same as the minimum allowable value ** for pageSize. */ zMaster = pPager->pTmpSpace; @@ -42334,7 +49796,7 @@ static int readDbPage(PgHdr *pPg, u32 iFrame){ ** ** For an encrypted database, the situation is more complex: bytes ** 24..39 of the database are white noise. But the probability of - ** white noising equaling 16 bytes of 0xff is vanishingly small so + ** white noise equaling 16 bytes of 0xff is vanishingly small so ** we should still be ok. */ memset(pPager->dbFileVers, 0xff, sizeof(pPager->dbFileVers)); @@ -42343,7 +49805,7 @@ static int readDbPage(PgHdr *pPg, u32 iFrame){ memcpy(&pPager->dbFileVers, dbFileVers, sizeof(pPager->dbFileVers)); } } - CODEC1(pPager, pPg->pData, pgno, 3, rc = SQLITE_NOMEM); + CODEC1(pPager, pPg->pData, pgno, 3, rc = SQLITE_NOMEM_BKPT); PAGER_INCR(sqlite3_pager_readdb_count); PAGER_INCR(pPager->nRead); @@ -42468,9 +49930,7 @@ static int pagerWalFrames( ){ int rc; /* Return code */ int nList; /* Number of pages in pList */ -#if defined(SQLITE_DEBUG) || defined(SQLITE_CHECK_PAGES) PgHdr *p; /* For looping over pages */ -#endif assert( pPager->pWal ); assert( pList ); @@ -42487,7 +49947,6 @@ static int pagerWalFrames( ** any pages with page numbers greater than nTruncate into the WAL file. ** They will never be read by any client. So remove them from the pDirty ** list here. */ - PgHdr *p; PgHdr **ppNext = &pList; nList = 0; for(p=pList; (*ppNext = p)!=0; p=p->pDirty){ @@ -42507,7 +49966,6 @@ static int pagerWalFrames( pPager->pageSize, pList, nTruncate, isCommit, pPager->walSyncFlags ); if( rc==SQLITE_OK && pPager->pBackup ){ - PgHdr *p; for(p=pList; p; p=p->pDirty){ sqlite3BackupUpdate(pPager->pBackup, p->pgno, (u8 *)p->pData); } @@ -42575,22 +50033,20 @@ static int pagerPagecount(Pager *pPager, Pgno *pnPage){ */ assert( pPager->eState==PAGER_OPEN ); assert( pPager->eLock>=SHARED_LOCK ); + assert( isOpen(pPager->fd) ); + assert( pPager->tempFile==0 ); nPage = sqlite3WalDbsize(pPager->pWal); - /* If the database size was not available from the WAL sub-system, - ** determine it based on the size of the database file. If the size - ** of the database file is not an integer multiple of the page-size, - ** round down to the nearest page. Except, any file larger than 0 - ** bytes in size is considered to contain at least one page. + /* If the number of pages in the database is not available from the + ** WAL sub-system, determine the page counte based on the size of + ** the database file. If the size of the database file is not an + ** integer multiple of the page-size, round up the result. */ - if( nPage==0 ){ + if( nPage==0 && ALWAYS(isOpen(pPager->fd)) ){ i64 n = 0; /* Size of db file in bytes */ - assert( isOpen(pPager->fd) || pPager->tempFile ); - if( isOpen(pPager->fd) ){ - int rc = sqlite3OsFileSize(pPager->fd, &n); - if( rc!=SQLITE_OK ){ - return rc; - } + int rc = sqlite3OsFileSize(pPager->fd, &n); + if( rc!=SQLITE_OK ){ + return rc; } nPage = (Pgno)((n+pPager->pageSize-1) / pPager->pageSize); } @@ -42708,7 +50164,7 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){ if( pSavepoint ){ pDone = sqlite3BitvecCreate(pSavepoint->nOrig); if( !pDone ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } } @@ -42804,12 +50260,21 @@ static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){ } /* -** Change the maximum number of in-memory pages that are allowed. +** Change the maximum number of in-memory pages that are allowed +** before attempting to recycle clean and unused pages. */ SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager *pPager, int mxPage){ sqlite3PcacheSetCachesize(pPager->pPCache, mxPage); } +/* +** Change the maximum number of in-memory pages that are allowed +** before attempting to spill pages to journal. +*/ +SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager *pPager, int mxPage){ + return sqlite3PcacheSetSpillsize(pPager->pPCache, mxPage); +} + /* ** Invoke SQLITE_FCNTL_MMAP_SIZE based on the current value of szMmap. */ @@ -42820,6 +50285,7 @@ static void pagerFixMaplimit(Pager *pPager){ sqlite3_int64 sz; sz = pPager->szMmap; pPager->bUseFetch = (sz>0); + setGetterMethod(pPager); sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_MMAP_SIZE, &sz); } #endif @@ -42846,7 +50312,7 @@ SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){ ** The "level" in pgFlags & PAGER_SYNCHRONOUS_MASK sets the robustness ** of the database to damage due to OS crashes or power failures by ** changing the number of syncs()s when writing the journals. -** There are three levels: +** There are four levels: ** ** OFF sqlite3OsSync() is never called. This is the default ** for temporary and transient files. @@ -42866,6 +50332,10 @@ SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){ ** assurance that the journal will not be corrupted to the ** point of causing damage to the database during rollback. ** +** EXTRA This is like FULL except that is also syncs the directory +** that contains the rollback journal after the rollback +** journal is unlinked. +** ** The above is for a rollback-journal mode. For WAL mode, OFF continues ** to mean that no syncs ever occur. NORMAL means that the WAL is synced ** prior to the start of checkpoint and that the database file is synced @@ -42873,7 +50343,8 @@ SQLITE_PRIVATE void sqlite3PagerShrink(Pager *pPager){ ** was written back into the database. But no sync operations occur for ** an ordinary commit in NORMAL mode with WAL. FULL means that the WAL ** file is synced following each commit operation, in addition to the -** syncs associated with NORMAL. +** syncs associated with NORMAL. There is no difference between FULL +** and EXTRA for WAL mode. ** ** Do not confuse synchronous=FULL with SQLITE_SYNC_FULL. The ** SQLITE_SYNC_FULL macro means to use the MacOSX-style full-fsync @@ -42892,9 +50363,15 @@ SQLITE_PRIVATE void sqlite3PagerSetFlags( unsigned pgFlags /* Various flags */ ){ unsigned level = pgFlags & PAGER_SYNCHRONOUS_MASK; - assert( level>=1 && level<=3 ); - pPager->noSync = (level==1 || pPager->tempFile) ?1:0; - pPager->fullSync = (level==3 && !pPager->tempFile) ?1:0; + if( pPager->tempFile ){ + pPager->noSync = 1; + pPager->fullSync = 0; + pPager->extraSync = 0; + }else{ + pPager->noSync = level==PAGER_SYNCHRONOUS_OFF ?1:0; + pPager->fullSync = level>=PAGER_SYNCHRONOUS_FULL ?1:0; + pPager->extraSync = level==PAGER_SYNCHRONOUS_EXTRA ?1:0; + } if( pPager->noSync ){ pPager->syncFlags = 0; pPager->ckptSyncFlags = 0; @@ -43056,16 +50533,20 @@ SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nR } if( rc==SQLITE_OK ){ pNew = (char *)sqlite3PageMalloc(pageSize); - if( !pNew ) rc = SQLITE_NOMEM; + if( !pNew ) rc = SQLITE_NOMEM_BKPT; } if( rc==SQLITE_OK ){ pager_reset(pPager); - pPager->dbSize = (Pgno)((nByte+pageSize-1)/pageSize); - pPager->pageSize = pageSize; + rc = sqlite3PcacheSetPageSize(pPager->pPCache, pageSize); + } + if( rc==SQLITE_OK ){ sqlite3PageFree(pPager->pTmpSpace); pPager->pTmpSpace = pNew; - sqlite3PcacheSetPageSize(pPager->pPCache, pageSize); + pPager->dbSize = (Pgno)((nByte+pageSize-1)/pageSize); + pPager->pageSize = pageSize; + }else{ + sqlite3PageFree(pNew); } } @@ -43199,7 +50680,7 @@ static int pager_wait_on_lock(Pager *pPager, int locktype){ int rc; /* Return code */ /* Check that this is either a no-op (because the requested lock is - ** already held, or one of the transistions that the busy-handler + ** already held), or one of the transitions that the busy-handler ** may be invoked during, according to the comment above ** sqlite3PagerSetBusyhandler(). */ @@ -43301,6 +50782,7 @@ static int pagerSyncHotJournal(Pager *pPager){ return rc; } +#if SQLITE_MAX_MMAP_SIZE>0 /* ** Obtain a reference to a memory mapped page object for page number pgno. ** The new object will use the pointer pData, obtained from xFetch(). @@ -43318,17 +50800,18 @@ static int pagerAcquireMapPage( PgHdr **ppPage /* OUT: Acquired page object */ ){ PgHdr *p; /* Memory mapped page to return */ - + if( pPager->pMmapFreelist ){ *ppPage = p = pPager->pMmapFreelist; pPager->pMmapFreelist = p->pDirty; p->pDirty = 0; - memset(p->pExtra, 0, pPager->nExtra); + assert( pPager->nExtra>=8 ); + memset(p->pExtra, 0, 8); }else{ *ppPage = p = (PgHdr *)sqlite3MallocZero(sizeof(PgHdr) + pPager->nExtra); if( p==0 ){ sqlite3OsUnfetch(pPager->fd, (i64)(pgno-1) * pPager->pageSize, pData); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } p->pExtra = (void *)&p[1]; p->flags = PGHDR_MMAP; @@ -43348,6 +50831,7 @@ static int pagerAcquireMapPage( return SQLITE_OK; } +#endif /* ** Release a reference to page pPg. pPg must have been returned by an @@ -43390,9 +50874,10 @@ static void pagerFreeMapHdrs(Pager *pPager){ ** a hot journal may be left in the filesystem but no error is returned ** to the caller. */ -SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager){ +SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){ u8 *pTmp = (u8 *)pPager->pTmpSpace; + assert( db || pagerUseWal(pPager)==0 ); assert( assert_pager_state(pPager) ); disable_simulated_io_errors(); sqlite3BeginBenignMalloc(); @@ -43400,7 +50885,10 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager){ /* pPager->errCode = 0; */ pPager->exclusiveMode = 0; #ifndef SQLITE_OMIT_WAL - sqlite3WalClose(pPager->pWal, pPager->ckptSyncFlags, pPager->pageSize, pTmp); + assert( db || pPager->pWal==0 ); + sqlite3WalClose(pPager->pWal, db, pPager->ckptSyncFlags, pPager->pageSize, + (db && (db->flags & SQLITE_NoCkptOnClose) ? 0 : pTmp) + ); pPager->pWal = 0; #endif pager_reset(pPager); @@ -43642,8 +51130,9 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ /* This function is only called for rollback pagers in WRITER_DBMOD state. */ assert( !pagerUseWal(pPager) ); - assert( pPager->eState==PAGER_WRITER_DBMOD ); + assert( pPager->tempFile || pPager->eState==PAGER_WRITER_DBMOD ); assert( pPager->eLock==EXCLUSIVE_LOCK ); + assert( isOpen(pPager->fd) || pList->pDirty==0 ); /* If the file is a temp-file has not yet been opened, open it now. It ** is not possible for rc to be other than SQLITE_OK if this branch @@ -43686,7 +51175,7 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ if( pList->pgno==1 ) pager_write_changecounter(pList); /* Encode the database */ - CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM, pData); + CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM_BKPT, pData); /* Write out the page data. */ rc = sqlite3OsWrite(pPager->fd, pData, pPager->pageSize, offset); @@ -43731,19 +51220,20 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ static int openSubJournal(Pager *pPager){ int rc = SQLITE_OK; if( !isOpen(pPager->sjfd) ){ + const int flags = SQLITE_OPEN_SUBJOURNAL | SQLITE_OPEN_READWRITE + | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXCLUSIVE + | SQLITE_OPEN_DELETEONCLOSE; + int nStmtSpill = sqlite3Config.nStmtSpill; if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY || pPager->subjInMemory ){ - sqlite3MemJournalOpen(pPager->sjfd); - }else{ - rc = pagerOpentemp(pPager, pPager->sjfd, SQLITE_OPEN_SUBJOURNAL); + nStmtSpill = -1; } + rc = sqlite3JournalOpen(pPager->pVfs, 0, pPager->sjfd, flags, nStmtSpill); } return rc; } /* ** Append a record of the current state of page pPg to the sub-journal. -** It is the callers responsibility to use subjRequiresPage() to check -** that it is really required before calling this function. ** ** If successful, set the bit corresponding to pPg->pgno in the bitvecs ** for all open savepoints before returning. @@ -43775,7 +51265,7 @@ static int subjournalPage(PgHdr *pPg){ i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize); char *pData2; - CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2); + CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2); PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno)); rc = write32bits(pPager->sjfd, offset, pPg->pgno); if( rc==SQLITE_OK ){ @@ -43790,6 +51280,13 @@ static int subjournalPage(PgHdr *pPg){ } return rc; } +static int subjournalPageIfRequired(PgHdr *pPg){ + if( subjRequiresPage(pPg) ){ + return subjournalPage(pPg); + }else{ + return SQLITE_OK; + } +} /* ** This function is called by the pcache layer when it has reached some @@ -43827,8 +51324,8 @@ static int pagerStress(void *p, PgHdr *pPg){ ** a rollback or by user request, respectively. ** ** Spilling is also prohibited when in an error state since that could - ** lead to database corruption. In the current implementaton it - ** is impossible for sqlite3PcacheFetch() to be called with createFlag==1 + ** lead to database corruption. In the current implementation it + ** is impossible for sqlite3PcacheFetch() to be called with createFlag==3 ** while in the error state, hence it is impossible for this routine to ** be called in the error state. Nevertheless, we include a NEVER() ** test for the error state as a safeguard against future changes. @@ -43847,9 +51344,7 @@ static int pagerStress(void *p, PgHdr *pPg){ pPg->pDirty = 0; if( pagerUseWal(pPager) ){ /* Write a single frame for this page to the log. */ - if( subjRequiresPage(pPg) ){ - rc = subjournalPage(pPg); - } + rc = subjournalPageIfRequired(pPg); if( rc==SQLITE_OK ){ rc = pagerWalFrames(pPager, pPg, 0, 0); } @@ -43862,39 +51357,6 @@ static int pagerStress(void *p, PgHdr *pPg){ rc = syncJournal(pPager, 1); } - /* If the page number of this page is larger than the current size of - ** the database image, it may need to be written to the sub-journal. - ** This is because the call to pager_write_pagelist() below will not - ** actually write data to the file in this case. - ** - ** Consider the following sequence of events: - ** - ** BEGIN; - ** - ** - ** SAVEPOINT sp; - ** - ** pagerStress(page X) - ** ROLLBACK TO sp; - ** - ** If (X>Y), then when pagerStress is called page X will not be written - ** out to the database file, but will be dropped from the cache. Then, - ** following the "ROLLBACK TO sp" statement, reading page X will read - ** data from the database file. This will be the copy of page X as it - ** was when the transaction started, not as it was when "SAVEPOINT sp" - ** was executed. - ** - ** The solution is to write the current data for page X into the - ** sub-journal file now (if it is not already there), so that it will - ** be restored to its current value when the "ROLLBACK TO sp" is - ** executed. - */ - if( NEVER( - rc==SQLITE_OK && pPg->pgno>pPager->dbSize && subjRequiresPage(pPg) - ) ){ - rc = subjournalPage(pPg); - } - /* Write the contents of the page out to the database file. */ if( rc==SQLITE_OK ){ assert( (pPg->flags&PGHDR_NEED_SYNC)==0 ); @@ -43911,6 +51373,25 @@ static int pagerStress(void *p, PgHdr *pPg){ return pager_error(pPager, rc); } +/* +** Flush all unreferenced dirty pages to disk. +*/ +SQLITE_PRIVATE int sqlite3PagerFlush(Pager *pPager){ + int rc = pPager->errCode; + if( !MEMDB ){ + PgHdr *pList = sqlite3PcacheDirtyList(pPager->pPCache); + assert( assert_pager_state(pPager) ); + while( rc==SQLITE_OK && pList ){ + PgHdr *pNext = pList->pDirty; + if( pList->nRef==0 ){ + rc = pagerStress((void*)pPager, pList); + } + pList = pNext; + } + } + + return rc; +} /* ** Allocate and initialize a new Pager object and put a pointer to it @@ -43926,7 +51407,9 @@ static int pagerStress(void *p, PgHdr *pPg){ ** ** The nExtra parameter specifies the number of bytes of space allocated ** along with each page reference. This space is available to the user -** via the sqlite3PagerGetExtra() API. +** via the sqlite3PagerGetExtra() API. When a new page is allocated, the +** first 8 bytes of this space are zeroed but the remainder is uninitialized. +** (The extra space is used by btree as the MemPage object.) ** ** The flags argument is used to specify properties that affect the ** operation of the pager. It should be passed some bitwise combination @@ -43967,18 +51450,8 @@ SQLITE_PRIVATE int sqlite3PagerOpen( int nUri = 0; /* Number of bytes of URI args at *zUri */ /* Figure out how much space is required for each journal file-handle - ** (there are two of them, the main journal and the sub-journal). This - ** is the maximum space required for an in-memory journal file handle - ** and a regular journal file-handle. Note that a "regular journal-handle" - ** may be a wrapper capable of caching the first portion of the journal - ** file in memory to implement the atomic-write optimization (see - ** source file journal.c). - */ - if( sqlite3JournalSize(pVfs)>sqlite3MemJournalSize() ){ - journalFileSize = ROUND8(sqlite3JournalSize(pVfs)); - }else{ - journalFileSize = ROUND8(sqlite3MemJournalSize()); - } + ** (there are two of them, the main journal and the sub-journal). */ + journalFileSize = ROUND8(sqlite3JournalSize(pVfs)); /* Set the output variable to NULL in case an error occurs. */ *ppPager = 0; @@ -43988,7 +51461,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( memDb = 1; if( zFilename && zFilename[0] ){ zPathname = sqlite3DbStrDup(0, zFilename); - if( zPathname==0 ) return SQLITE_NOMEM; + if( zPathname==0 ) return SQLITE_NOMEM_BKPT; nPathname = sqlite3Strlen30(zPathname); zFilename = 0; } @@ -44004,7 +51477,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( nPathname = pVfs->mxPathname+1; zPathname = sqlite3DbMallocRaw(0, nPathname*2); if( zPathname==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */ rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname); @@ -44057,7 +51530,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) ); if( !pPtr ){ sqlite3DbFree(0, zPathname); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pPager = (Pager*)(pPtr); pPager->pPCache = (PCache*)(pPtr += ROUND8(sizeof(*pPager))); @@ -44103,30 +51576,38 @@ SQLITE_PRIVATE int sqlite3PagerOpen( ** + The value returned by sqlite3OsSectorSize() ** + The largest page size that can be written atomically. */ - if( rc==SQLITE_OK && !readOnly ){ - setSectorSize(pPager); - assert(SQLITE_DEFAULT_PAGE_SIZE<=SQLITE_MAX_DEFAULT_PAGE_SIZE); - if( szPageDfltsectorSize ){ - if( pPager->sectorSize>SQLITE_MAX_DEFAULT_PAGE_SIZE ){ - szPageDflt = SQLITE_MAX_DEFAULT_PAGE_SIZE; - }else{ - szPageDflt = (u32)pPager->sectorSize; - } - } -#ifdef SQLITE_ENABLE_ATOMIC_WRITE - { - int iDc = sqlite3OsDeviceCharacteristics(pPager->fd); - int ii; - assert(SQLITE_IOCAP_ATOMIC512==(512>>8)); - assert(SQLITE_IOCAP_ATOMIC64K==(65536>>8)); - assert(SQLITE_MAX_DEFAULT_PAGE_SIZE<=65536); - for(ii=szPageDflt; ii<=SQLITE_MAX_DEFAULT_PAGE_SIZE; ii=ii*2){ - if( iDc&(SQLITE_IOCAP_ATOMIC|(ii>>8)) ){ - szPageDflt = ii; + if( rc==SQLITE_OK ){ + int iDc = sqlite3OsDeviceCharacteristics(pPager->fd); + if( !readOnly ){ + setSectorSize(pPager); + assert(SQLITE_DEFAULT_PAGE_SIZE<=SQLITE_MAX_DEFAULT_PAGE_SIZE); + if( szPageDfltsectorSize ){ + if( pPager->sectorSize>SQLITE_MAX_DEFAULT_PAGE_SIZE ){ + szPageDflt = SQLITE_MAX_DEFAULT_PAGE_SIZE; + }else{ + szPageDflt = (u32)pPager->sectorSize; + } + } +#ifdef SQLITE_ENABLE_ATOMIC_WRITE + { + int ii; + assert(SQLITE_IOCAP_ATOMIC512==(512>>8)); + assert(SQLITE_IOCAP_ATOMIC64K==(65536>>8)); + assert(SQLITE_MAX_DEFAULT_PAGE_SIZE<=65536); + for(ii=szPageDflt; ii<=SQLITE_MAX_DEFAULT_PAGE_SIZE; ii=ii*2){ + if( iDc&(SQLITE_IOCAP_ATOMIC|(ii>>8)) ){ + szPageDflt = ii; + } } } - } #endif + } + pPager->noLock = sqlite3_uri_boolean(zFilename, "nolock", 0); + if( (iDc & SQLITE_IOCAP_IMMUTABLE)!=0 + || sqlite3_uri_boolean(zFilename, "immutable", 0) ){ + vfsFlags |= SQLITE_OPEN_READONLY; + goto act_like_temp_file; + } } }else{ /* If a temporary file is requested, it is not opened immediately. @@ -44136,10 +51617,14 @@ SQLITE_PRIVATE int sqlite3PagerOpen( ** This branch is also run for an in-memory database. An in-memory ** database is the same as a temp-file that is never written out to ** disk and uses an in-memory rollback journal. + ** + ** This branch also runs for files marked as immutable. */ +act_like_temp_file: tempFile = 1; - pPager->eState = PAGER_READER; - pPager->eLock = EXCLUSIVE_LOCK; + pPager->eState = PAGER_READER; /* Pretend we already have a lock */ + pPager->eLock = EXCLUSIVE_LOCK; /* Pretend we are in EXCLUSIVE mode */ + pPager->noLock = 1; /* Do no locking */ readOnly = (vfsFlags&SQLITE_OPEN_READONLY); } @@ -44152,22 +51637,23 @@ SQLITE_PRIVATE int sqlite3PagerOpen( testcase( rc!=SQLITE_OK ); } - /* If an error occurred in either of the blocks above, free the - ** Pager structure and close the file. + /* Initialize the PCache object. */ + if( rc==SQLITE_OK ){ + nExtra = ROUND8(nExtra); + assert( nExtra>=8 && nExtra<1000 ); + rc = sqlite3PcacheOpen(szPageDflt, nExtra, !memDb, + !memDb?pagerStress:0, (void *)pPager, pPager->pPCache); + } + + /* If an error occurred above, free the Pager structure and close the file. */ if( rc!=SQLITE_OK ){ - assert( !pPager->pTmpSpace ); sqlite3OsClose(pPager->fd); + sqlite3PageFree(pPager->pTmpSpace); sqlite3_free(pPager); return rc; } - /* Initialize the PCache object. */ - assert( nExtra<1000 ); - nExtra = ROUND8(nExtra); - sqlite3PcacheOpen(szPageDflt, nExtra, !memDb, - !memDb?pagerStress:0, (void *)pPager, pPager->pPCache); - PAGERTRACE(("OPEN %d %s\n", FILEHANDLEID(pPager->fd), pPager->zFilename)); IOTRACE(("OPEN %p %s\n", pPager, pPager->zFilename)) @@ -44180,9 +51666,6 @@ SQLITE_PRIVATE int sqlite3PagerOpen( /* pPager->nPage = 0; */ pPager->mxPgno = SQLITE_MAX_PAGE_COUNT; /* pPager->state = PAGER_UNLOCK; */ -#if 0 - assert( pPager->state == (tempFile ? PAGER_EXCLUSIVE : PAGER_UNLOCK) ); -#endif /* pPager->errMask = 0; */ pPager->tempFile = (u8)tempFile; assert( tempFile==PAGER_LOCKINGMODE_NORMAL @@ -44196,11 +51679,13 @@ SQLITE_PRIVATE int sqlite3PagerOpen( pPager->noSync = pPager->tempFile; if( pPager->noSync ){ assert( pPager->fullSync==0 ); + assert( pPager->extraSync==0 ); assert( pPager->syncFlags==0 ); assert( pPager->walSyncFlags==0 ); assert( pPager->ckptSyncFlags==0 ); }else{ pPager->fullSync = 1; + pPager->extraSync = 0; pPager->syncFlags = SQLITE_SYNC_NORMAL; pPager->walSyncFlags = SQLITE_SYNC_NORMAL | WAL_SYNC_TRANSACTIONS; pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL; @@ -44220,6 +51705,7 @@ SQLITE_PRIVATE int sqlite3PagerOpen( /* pPager->xBusyHandler = 0; */ /* pPager->pBusyHandlerArg = 0; */ pPager->xReiniter = xReinit; + setGetterMethod(pPager); /* memset(pPager->aHash, 0, sizeof(pPager->aHash)); */ /* pPager->szMmap = SQLITE_DEFAULT_MMAP_SIZE // will be set by btree.c */ @@ -44317,15 +51803,18 @@ static int hasHotJournal(Pager *pPager, int *pExists){ if( rc==SQLITE_OK && !locked ){ Pgno nPage; /* Number of pages in database file */ - /* Check the size of the database file. If it consists of 0 pages, - ** then delete the journal file. See the header comment above for - ** the reasoning here. Delete the obsolete journal file under - ** a RESERVED lock to avoid race conditions and to avoid violating - ** [H33020]. - */ + assert( pPager->tempFile==0 ); rc = pagerPagecount(pPager, &nPage); if( rc==SQLITE_OK ){ - if( nPage==0 ){ + /* If the database is zero pages in size, that means that either (1) the + ** journal is a remnant from a prior database with the same name where + ** the database file but not the journal was deleted, or (2) the initial + ** transaction that populates a new database is being rolled back. + ** In either case, the journal file can be deleted. However, take care + ** not to delete the journal file if it is already open due to + ** journal_mode=PERSIST. + */ + if( nPage==0 && !jrnlOpen ){ sqlite3BeginBenignMalloc(); if( pagerLockDb(pPager, RESERVED_LOCK)==SQLITE_OK ){ sqlite3OsDelete(pVfs, pPager->zJournal, 0); @@ -44355,7 +51844,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){ *pExists = (first!=0); }else if( rc==SQLITE_CANTOPEN ){ /* If we cannot open the rollback journal file in order to see if - ** its has a zero header, that might be due to an I/O error, or + ** it has a zero header, that might be due to an I/O error, or ** it might be due to the race condition described above and in ** ticket #3883. Either way, assume that the journal is hot. ** This might be a false positive. But if it is, then the @@ -44376,7 +51865,7 @@ static int hasHotJournal(Pager *pPager, int *pExists){ /* ** This function is called to obtain a shared lock on the database file. -** It is illegal to call sqlite3PagerAcquire() until after this function +** It is illegal to call sqlite3PagerGet() until after this function ** has been successfully called. If a shared-lock is already held when ** this function is called, it is a no-op. ** @@ -44407,17 +51896,17 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ /* This routine is only called from b-tree and only when there are no ** outstanding pages. This implies that the pager state should either ** be OPEN or READER. READER is only possible if the pager is or was in - ** exclusive access mode. - */ + ** exclusive access mode. */ assert( sqlite3PcacheRefCount(pPager->pPCache)==0 ); assert( assert_pager_state(pPager) ); assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); - if( NEVER(MEMDB && pPager->errCode) ){ return pPager->errCode; } + assert( pPager->errCode==SQLITE_OK ); if( !pagerUseWal(pPager) && pPager->eState==PAGER_OPEN ){ int bHotJournal = 1; /* True if there exists a hot journal-file */ assert( !MEMDB ); + assert( pPager->tempFile==0 || pPager->eLock==EXCLUSIVE_LOCK ); rc = pager_wait_on_lock(pPager, SHARED_LOCK); if( rc!=SQLITE_OK ){ @@ -44503,7 +51992,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ assert( rc==SQLITE_OK ); rc = pagerSyncHotJournal(pPager); if( rc==SQLITE_OK ){ - rc = pager_playback(pPager, 1); + rc = pager_playback(pPager, !pPager->tempFile); pPager->eState = PAGER_OPEN; } }else if( !pPager->exclusiveMode ){ @@ -44537,18 +52026,14 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ ); } - if( !pPager->tempFile && ( - pPager->pBackup - || sqlite3PcachePagecount(pPager->pPCache)>0 - || USEFETCH(pPager) - )){ - /* The shared-lock has just been acquired on the database file - ** and there are already pages in the cache (from a previous - ** read or write transaction). Check to see if the database - ** has been modified. If the database has changed, flush the - ** cache. + if( !pPager->tempFile && pPager->hasHeldSharedLock ){ + /* The shared-lock has just been acquired then check to + ** see if the database has been modified. If the database has changed, + ** flush the cache. The hasHeldSharedLock flag prevents this from + ** occurring on the very first access to a file, in order to save a + ** single unnecessary sqlite3OsRead() call at the start-up. ** - ** Database changes is detected by looking at 15 bytes beginning + ** Database changes are detected by looking at 15 bytes beginning ** at offset 24 into the file. The first 4 of these 16 bytes are ** a 32-bit counter that is incremented with each change. The ** other bytes change randomly with each file change when @@ -44603,7 +52088,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ rc = pagerBeginReadTransaction(pPager); } - if( pPager->eState==PAGER_OPEN && rc==SQLITE_OK ){ + if( pPager->tempFile==0 && pPager->eState==PAGER_OPEN && rc==SQLITE_OK ){ rc = pagerPagecount(pPager, &pPager->dbSize); } @@ -44614,6 +52099,7 @@ SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager){ assert( pPager->eState==PAGER_OPEN ); }else{ pPager->eState = PAGER_READER; + pPager->hasHeldSharedLock = 1; } return rc; } @@ -44633,10 +52119,17 @@ static void pagerUnlockIfUnused(Pager *pPager){ } /* -** Acquire a reference to page number pgno in pager pPager (a page -** reference has type DbPage*). If the requested reference is +** The page getter methods each try to acquire a reference to a +** page with page number pgno. If the requested reference is ** successfully obtained, it is copied to *ppPage and SQLITE_OK returned. ** +** There are different implementations of the getter method depending +** on the current state of the pager. +** +** getPageNormal() -- The normal getter +** getPageError() -- Used if the pager is in an error state +** getPageMmap() -- Used if memory-mapped I/O is enabled +** ** If the requested page is already in the cache, it is returned. ** Otherwise, a new page object is allocated and populated with data ** read from the database file. In some cases, the pcache module may @@ -44648,14 +52141,14 @@ static void pagerUnlockIfUnused(Pager *pPager){ ** already in the cache when this function is called, then the extra ** data is left as it was when the page object was last used. ** -** If the database image is smaller than the requested page or if a -** non-zero value is passed as the noContent parameter and the +** If the database image is smaller than the requested page or if +** the flags parameter contains the PAGER_GET_NOCONTENT bit and the ** requested page is not already stored in the cache, then no ** actual disk read occurs. In this case the memory image of the ** page is initialized to all zeros. ** -** If noContent is true, it means that we do not care about the contents -** of the page. This occurs in two scenarios: +** If PAGER_GET_NOCONTENT is true, it means that we do not care about +** the contents of the page. This occurs in two scenarios: ** ** a) When reading a free-list leaf page from the database, and ** @@ -44663,8 +52156,8 @@ static void pagerUnlockIfUnused(Pager *pPager){ ** a new page into the cache to be filled with the data read ** from the savepoint journal. ** -** If noContent is true, then the data returned is zeroed instead of -** being read from the database. Additionally, the bits corresponding +** If PAGER_GET_NOCONTENT is true, then the data returned is zeroed instead +** of being read from the database. Additionally, the bits corresponding ** to pgno in Pager.pInJournal (bitvec of pages already written to the ** journal file) and the PagerSavepoint.pInSavepoint bitvecs of any open ** savepoints are set. This means if the page is made writable at any @@ -44682,88 +52175,40 @@ static void pagerUnlockIfUnused(Pager *pPager){ ** Since Lookup() never goes to disk, it never has to deal with locks ** or journal files. */ -SQLITE_PRIVATE int sqlite3PagerAcquire( +static int getPageNormal( Pager *pPager, /* The pager open on the database file */ Pgno pgno, /* Page number to fetch */ DbPage **ppPage, /* Write a pointer to the page here */ int flags /* PAGER_GET_XXX flags */ ){ int rc = SQLITE_OK; - PgHdr *pPg = 0; - u32 iFrame = 0; /* Frame to read from WAL file */ - const int noContent = (flags & PAGER_GET_NOCONTENT); - - /* It is acceptable to use a read-only (mmap) page for any page except - ** page 1 if there is no write-transaction open or the ACQUIRE_READONLY - ** flag was specified by the caller. And so long as the db is not a - ** temporary or in-memory database. */ - const int bMmapOk = (pgno!=1 && USEFETCH(pPager) - && (pPager->eState==PAGER_READER || (flags & PAGER_GET_READONLY)) -#ifdef SQLITE_HAS_CODEC - && pPager->xCodec==0 -#endif - ); + PgHdr *pPg; + u8 noContent; /* True if PAGER_GET_NOCONTENT is set */ + sqlite3_pcache_page *pBase; + assert( pPager->errCode==SQLITE_OK ); assert( pPager->eState>=PAGER_READER ); assert( assert_pager_state(pPager) ); - assert( noContent==0 || bMmapOk==0 ); + assert( pPager->hasHeldSharedLock==1 ); - if( pgno==0 ){ - return SQLITE_CORRUPT_BKPT; - } - - /* If the pager is in the error state, return an error immediately. - ** Otherwise, request the page from the PCache layer. */ - if( pPager->errCode!=SQLITE_OK ){ - rc = pPager->errCode; - }else{ - - if( bMmapOk && pagerUseWal(pPager) ){ - rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame); - if( rc!=SQLITE_OK ) goto pager_acquire_err; - } - - if( bMmapOk && iFrame==0 ){ - void *pData = 0; - - rc = sqlite3OsFetch(pPager->fd, - (i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData - ); - - if( rc==SQLITE_OK && pData ){ - if( pPager->eState>PAGER_READER ){ - (void)sqlite3PcacheFetch(pPager->pPCache, pgno, 0, &pPg); - } - if( pPg==0 ){ - rc = pagerAcquireMapPage(pPager, pgno, pData, &pPg); - }else{ - sqlite3OsUnfetch(pPager->fd, (i64)(pgno-1)*pPager->pageSize, pData); - } - if( pPg ){ - assert( rc==SQLITE_OK ); - *ppPage = pPg; - return SQLITE_OK; - } - } - if( rc!=SQLITE_OK ){ - goto pager_acquire_err; - } - } - - rc = sqlite3PcacheFetch(pPager->pPCache, pgno, 1, ppPage); - } - - if( rc!=SQLITE_OK ){ - /* Either the call to sqlite3PcacheFetch() returned an error or the - ** pager was already in the error-state when this function was called. - ** Set pPg to 0 and jump to the exception handler. */ + if( pgno==0 ) return SQLITE_CORRUPT_BKPT; + pBase = sqlite3PcacheFetch(pPager->pPCache, pgno, 3); + if( pBase==0 ){ pPg = 0; - goto pager_acquire_err; + rc = sqlite3PcacheFetchStress(pPager->pPCache, pgno, &pBase); + if( rc!=SQLITE_OK ) goto pager_acquire_err; + if( pBase==0 ){ + rc = SQLITE_NOMEM_BKPT; + goto pager_acquire_err; + } } - assert( (*ppPage)->pgno==pgno ); - assert( (*ppPage)->pPager==pPager || (*ppPage)->pPager==0 ); + pPg = *ppPage = sqlite3PcacheFetchFinish(pPager->pPCache, pgno, pBase); + assert( pPg==(*ppPage) ); + assert( pPg->pgno==pgno ); + assert( pPg->pPager==pPager || pPg->pPager==0 ); - if( (*ppPage)->pPager && !noContent ){ + noContent = (flags & PAGER_GET_NOCONTENT)!=0; + if( pPg->pPager && !noContent ){ /* In this case the pcache already contains an initialized copy of ** the page. Return without further ado. */ assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) ); @@ -44772,19 +52217,20 @@ SQLITE_PRIVATE int sqlite3PagerAcquire( }else{ /* The pager cache has created a new page. Its content needs to - ** be initialized. */ - - pPg = *ppPage; - pPg->pPager = pPager; - - /* The maximum page number is 2^31. Return SQLITE_CORRUPT if a page - ** number greater than this, or the unused locking-page, is requested. */ + ** be initialized. But first some error checks: + ** + ** (1) The maximum page number is 2^31 + ** (2) Never try to fetch the locking page + */ if( pgno>PAGER_MAX_PGNO || pgno==PAGER_MJ_PGNO(pPager) ){ rc = SQLITE_CORRUPT_BKPT; goto pager_acquire_err; } - if( MEMDB || pPager->dbSizefd) ){ + pPg->pPager = pPager; + + assert( !isOpen(pPager->fd) || !MEMDB ); + if( !isOpen(pPager->fd) || pPager->dbSizepPager->mxPgno ){ rc = SQLITE_FULL; goto pager_acquire_err; @@ -44808,7 +52254,8 @@ SQLITE_PRIVATE int sqlite3PagerAcquire( memset(pPg->pData, 0, pPager->pageSize); IOTRACE(("ZERO %p %d\n", pPager, pgno)); }else{ - if( pagerUseWal(pPager) && bMmapOk==0 ){ + u32 iFrame = 0; /* Frame to read from WAL file */ + if( pagerUseWal(pPager) ){ rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame); if( rc!=SQLITE_OK ) goto pager_acquire_err; } @@ -44821,7 +52268,6 @@ SQLITE_PRIVATE int sqlite3PagerAcquire( } pager_set_pagehash(pPg); } - return SQLITE_OK; pager_acquire_err: @@ -44830,11 +52276,109 @@ pager_acquire_err: sqlite3PcacheDrop(pPg); } pagerUnlockIfUnused(pPager); - *ppPage = 0; return rc; } +#if SQLITE_MAX_MMAP_SIZE>0 +/* The page getter for when memory-mapped I/O is enabled */ +static int getPageMMap( + Pager *pPager, /* The pager open on the database file */ + Pgno pgno, /* Page number to fetch */ + DbPage **ppPage, /* Write a pointer to the page here */ + int flags /* PAGER_GET_XXX flags */ +){ + int rc = SQLITE_OK; + PgHdr *pPg = 0; + u32 iFrame = 0; /* Frame to read from WAL file */ + + /* It is acceptable to use a read-only (mmap) page for any page except + ** page 1 if there is no write-transaction open or the ACQUIRE_READONLY + ** flag was specified by the caller. And so long as the db is not a + ** temporary or in-memory database. */ + const int bMmapOk = (pgno>1 + && (pPager->eState==PAGER_READER || (flags & PAGER_GET_READONLY)) + ); + + assert( USEFETCH(pPager) ); +#ifdef SQLITE_HAS_CODEC + assert( pPager->xCodec==0 ); +#endif + + /* Optimization note: Adding the "pgno<=1" term before "pgno==0" here + ** allows the compiler optimizer to reuse the results of the "pgno>1" + ** test in the previous statement, and avoid testing pgno==0 in the + ** common case where pgno is large. */ + if( pgno<=1 && pgno==0 ){ + return SQLITE_CORRUPT_BKPT; + } + assert( pPager->eState>=PAGER_READER ); + assert( assert_pager_state(pPager) ); + assert( pPager->hasHeldSharedLock==1 ); + assert( pPager->errCode==SQLITE_OK ); + + if( bMmapOk && pagerUseWal(pPager) ){ + rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame); + if( rc!=SQLITE_OK ){ + *ppPage = 0; + return rc; + } + } + if( bMmapOk && iFrame==0 ){ + void *pData = 0; + rc = sqlite3OsFetch(pPager->fd, + (i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData + ); + if( rc==SQLITE_OK && pData ){ + if( pPager->eState>PAGER_READER || pPager->tempFile ){ + pPg = sqlite3PagerLookup(pPager, pgno); + } + if( pPg==0 ){ + rc = pagerAcquireMapPage(pPager, pgno, pData, &pPg); + }else{ + sqlite3OsUnfetch(pPager->fd, (i64)(pgno-1)*pPager->pageSize, pData); + } + if( pPg ){ + assert( rc==SQLITE_OK ); + *ppPage = pPg; + return SQLITE_OK; + } + } + if( rc!=SQLITE_OK ){ + *ppPage = 0; + return rc; + } + } + return getPageNormal(pPager, pgno, ppPage, flags); +} +#endif /* SQLITE_MAX_MMAP_SIZE>0 */ + +/* The page getter method for when the pager is an error state */ +static int getPageError( + Pager *pPager, /* The pager open on the database file */ + Pgno pgno, /* Page number to fetch */ + DbPage **ppPage, /* Write a pointer to the page here */ + int flags /* PAGER_GET_XXX flags */ +){ + UNUSED_PARAMETER(pgno); + UNUSED_PARAMETER(flags); + assert( pPager->errCode!=SQLITE_OK ); + *ppPage = 0; + return pPager->errCode; +} + + +/* Dispatch all page fetch requests to the appropriate getter method. +*/ +SQLITE_PRIVATE int sqlite3PagerGet( + Pager *pPager, /* The pager open on the database file */ + Pgno pgno, /* Page number to fetch */ + DbPage **ppPage, /* Write a pointer to the page here */ + int flags /* PAGER_GET_XXX flags */ +){ + return pPager->xGet(pPager, pgno, ppPage, flags); +} + /* ** Acquire a page if it is already in the in-memory cache. Do ** not read the page from disk. Return a pointer to the page, @@ -44847,13 +52391,14 @@ pager_acquire_err: ** has ever happened. */ SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno){ - PgHdr *pPg = 0; + sqlite3_pcache_page *pPage; assert( pPager!=0 ); assert( pgno!=0 ); assert( pPager->pPCache!=0 ); - assert( pPager->eState>=PAGER_READER && pPager->eState!=PAGER_ERROR ); - sqlite3PcacheFetch(pPager->pPCache, pgno, 0, &pPg); - return pPg; + pPage = sqlite3PcacheFetch(pPager->pPCache, pgno, 0); + assert( pPage==0 || pPager->hasHeldSharedLock ); + if( pPage==0 ) return 0; + return sqlite3PcacheFetchFinish(pPager->pPCache, pgno, pPage); } /* @@ -44917,7 +52462,7 @@ static int pager_open_journal(Pager *pPager){ if( !pagerUseWal(pPager) && pPager->journalMode!=PAGER_JOURNALMODE_OFF ){ pPager->pInJournal = sqlite3BitvecCreate(pPager->dbSize); if( pPager->pInJournal==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } /* Open the journal file if it is not already open. */ @@ -44925,24 +52470,24 @@ static int pager_open_journal(Pager *pPager){ if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ){ sqlite3MemJournalOpen(pPager->jfd); }else{ - const int flags = /* VFS flags to open journal file */ - SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE| - (pPager->tempFile ? - (SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL): - (SQLITE_OPEN_MAIN_JOURNAL) - ); + int flags = SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE; + int nSpill; + if( pPager->tempFile ){ + flags |= (SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL); + nSpill = sqlite3Config.nStmtSpill; + }else{ + flags |= SQLITE_OPEN_MAIN_JOURNAL; + nSpill = jrnlBufferSize(pPager); + } + /* Verify that the database still has the same name as it did when ** it was originally opened. */ rc = databaseIsUnmoved(pPager); if( rc==SQLITE_OK ){ -#ifdef SQLITE_ENABLE_ATOMIC_WRITE - rc = sqlite3JournalOpen( - pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager) + rc = sqlite3JournalOpen ( + pVfs, pPager->zJournal, pPager->jfd, flags, nSpill ); -#else - rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0); -#endif } } assert( rc!=SQLITE_OK || isOpen(pPager->jfd) ); @@ -45009,7 +52554,7 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory if( rc!=SQLITE_OK ){ return rc; } - sqlite3WalExclusiveMode(pPager->pWal, 1); + (void)sqlite3WalExclusiveMode(pPager->pWal, 1); } /* Grab the write lock on the log file. If successful, upgrade to @@ -45056,6 +52601,59 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory return rc; } +/* +** Write page pPg onto the end of the rollback journal. +*/ +static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){ + Pager *pPager = pPg->pPager; + int rc; + u32 cksum; + char *pData2; + i64 iOff = pPager->journalOff; + + /* We should never write to the journal file the page that + ** contains the database locks. The following assert verifies + ** that we do not. */ + assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) ); + + assert( pPager->journalHdr<=pPager->journalOff ); + CODEC2(pPager, pPg->pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2); + cksum = pager_cksum(pPager, (u8*)pData2); + + /* Even if an IO or diskfull error occurs while journalling the + ** page in the block above, set the need-sync flag for the page. + ** Otherwise, when the transaction is rolled back, the logic in + ** playback_one_page() will think that the page needs to be restored + ** in the database file. And if an IO error occurs while doing so, + ** then corruption may follow. + */ + pPg->flags |= PGHDR_NEED_SYNC; + + rc = write32bits(pPager->jfd, iOff, pPg->pgno); + if( rc!=SQLITE_OK ) return rc; + rc = sqlite3OsWrite(pPager->jfd, pData2, pPager->pageSize, iOff+4); + if( rc!=SQLITE_OK ) return rc; + rc = write32bits(pPager->jfd, iOff+pPager->pageSize+4, cksum); + if( rc!=SQLITE_OK ) return rc; + + IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno, + pPager->journalOff, pPager->pageSize)); + PAGER_INCR(sqlite3_pager_writej_count); + PAGERTRACE(("JOURNAL %d page %d needSync=%d hash(%08x)\n", + PAGERID(pPager), pPg->pgno, + ((pPg->flags&PGHDR_NEED_SYNC)?1:0), pager_pagehash(pPg))); + + pPager->journalOff += 8 + pPager->pageSize; + pPager->nRec++; + assert( pPager->pInJournal!=0 ); + rc = sqlite3BitvecSet(pPager->pInJournal, pPg->pgno); + testcase( rc==SQLITE_NOMEM ); + assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); + rc |= addToSavepointBitvecs(pPager, pPg->pgno); + assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); + return rc; +} + /* ** Mark a single data page as writeable. The page is written into the ** main journal or sub-journal as required. If the page is written into @@ -45066,7 +52664,6 @@ SQLITE_PRIVATE int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory static int pager_write(PgHdr *pPg){ Pager *pPager = pPg->pPager; int rc = SQLITE_OK; - int inJournal; /* This routine is not called unless a write-transaction has already ** been started. The journal file may or may not be open at this point. @@ -45079,7 +52676,6 @@ static int pager_write(PgHdr *pPg){ assert( assert_pager_state(pPager) ); assert( pPager->errCode==0 ); assert( pPager->readOnly==0 ); - CHECK_PAGE(pPg); /* The journal file needs to be opened. Higher level routines have already @@ -45098,97 +52694,145 @@ static int pager_write(PgHdr *pPg){ assert( pPager->eState>=PAGER_WRITER_CACHEMOD ); assert( assert_pager_state(pPager) ); - /* Mark the page as dirty. If the page has already been written - ** to the journal then we can return right away. - */ + /* Mark the page that is about to be modified as dirty. */ sqlite3PcacheMakeDirty(pPg); - inJournal = pageInJournal(pPager, pPg); - if( inJournal && (pPager->nSavepoint==0 || !subjRequiresPage(pPg)) ){ - assert( !pagerUseWal(pPager) ); - }else{ - - /* The transaction journal now exists and we have a RESERVED or an - ** EXCLUSIVE lock on the main database file. Write the current page to - ** the transaction journal if it is not there already. - */ - if( !inJournal && !pagerUseWal(pPager) ){ - assert( pagerUseWal(pPager)==0 ); - if( pPg->pgno<=pPager->dbOrigSize && isOpen(pPager->jfd) ){ - u32 cksum; - char *pData2; - i64 iOff = pPager->journalOff; - /* We should never write to the journal file the page that - ** contains the database locks. The following assert verifies - ** that we do not. */ - assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) ); - - assert( pPager->journalHdr<=pPager->journalOff ); - CODEC2(pPager, pPg->pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2); - cksum = pager_cksum(pPager, (u8*)pData2); - - /* Even if an IO or diskfull error occurs while journalling the - ** page in the block above, set the need-sync flag for the page. - ** Otherwise, when the transaction is rolled back, the logic in - ** playback_one_page() will think that the page needs to be restored - ** in the database file. And if an IO error occurs while doing so, - ** then corruption may follow. - */ - pPg->flags |= PGHDR_NEED_SYNC; - - rc = write32bits(pPager->jfd, iOff, pPg->pgno); - if( rc!=SQLITE_OK ) return rc; - rc = sqlite3OsWrite(pPager->jfd, pData2, pPager->pageSize, iOff+4); - if( rc!=SQLITE_OK ) return rc; - rc = write32bits(pPager->jfd, iOff+pPager->pageSize+4, cksum); - if( rc!=SQLITE_OK ) return rc; - - IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno, - pPager->journalOff, pPager->pageSize)); - PAGER_INCR(sqlite3_pager_writej_count); - PAGERTRACE(("JOURNAL %d page %d needSync=%d hash(%08x)\n", - PAGERID(pPager), pPg->pgno, - ((pPg->flags&PGHDR_NEED_SYNC)?1:0), pager_pagehash(pPg))); - - pPager->journalOff += 8 + pPager->pageSize; - pPager->nRec++; - assert( pPager->pInJournal!=0 ); - rc = sqlite3BitvecSet(pPager->pInJournal, pPg->pgno); - testcase( rc==SQLITE_NOMEM ); - assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); - rc |= addToSavepointBitvecs(pPager, pPg->pgno); - if( rc!=SQLITE_OK ){ - assert( rc==SQLITE_NOMEM ); - return rc; - } - }else{ - if( pPager->eState!=PAGER_WRITER_DBMOD ){ - pPg->flags |= PGHDR_NEED_SYNC; - } - PAGERTRACE(("APPEND %d page %d needSync=%d\n", - PAGERID(pPager), pPg->pgno, - ((pPg->flags&PGHDR_NEED_SYNC)?1:0))); + /* If a rollback journal is in use, them make sure the page that is about + ** to change is in the rollback journal, or if the page is a new page off + ** then end of the file, make sure it is marked as PGHDR_NEED_SYNC. + */ + assert( (pPager->pInJournal!=0) == isOpen(pPager->jfd) ); + if( pPager->pInJournal!=0 + && sqlite3BitvecTestNotNull(pPager->pInJournal, pPg->pgno)==0 + ){ + assert( pagerUseWal(pPager)==0 ); + if( pPg->pgno<=pPager->dbOrigSize ){ + rc = pagerAddPageToRollbackJournal(pPg); + if( rc!=SQLITE_OK ){ + return rc; } - } - - /* If the statement journal is open and the page is not in it, - ** then write the current page to the statement journal. Note that - ** the statement journal format differs from the standard journal format - ** in that it omits the checksums and the header. - */ - if( pPager->nSavepoint>0 && subjRequiresPage(pPg) ){ - rc = subjournalPage(pPg); + }else{ + if( pPager->eState!=PAGER_WRITER_DBMOD ){ + pPg->flags |= PGHDR_NEED_SYNC; + } + PAGERTRACE(("APPEND %d page %d needSync=%d\n", + PAGERID(pPager), pPg->pgno, + ((pPg->flags&PGHDR_NEED_SYNC)?1:0))); } } - /* Update the database size and return. + /* The PGHDR_DIRTY bit is set above when the page was added to the dirty-list + ** and before writing the page into the rollback journal. Wait until now, + ** after the page has been successfully journalled, before setting the + ** PGHDR_WRITEABLE bit that indicates that the page can be safely modified. */ + pPg->flags |= PGHDR_WRITEABLE; + + /* If the statement journal is open and the page is not in it, + ** then write the page into the statement journal. + */ + if( pPager->nSavepoint>0 ){ + rc = subjournalPageIfRequired(pPg); + } + + /* Update the database size and return. */ if( pPager->dbSizepgno ){ pPager->dbSize = pPg->pgno; } return rc; } +/* +** This is a variant of sqlite3PagerWrite() that runs when the sector size +** is larger than the page size. SQLite makes the (reasonable) assumption that +** all bytes of a sector are written together by hardware. Hence, all bytes of +** a sector need to be journalled in case of a power loss in the middle of +** a write. +** +** Usually, the sector size is less than or equal to the page size, in which +** case pages can be individually written. This routine only runs in the +** exceptional case where the page size is smaller than the sector size. +*/ +static SQLITE_NOINLINE int pagerWriteLargeSector(PgHdr *pPg){ + int rc = SQLITE_OK; /* Return code */ + Pgno nPageCount; /* Total number of pages in database file */ + Pgno pg1; /* First page of the sector pPg is located on. */ + int nPage = 0; /* Number of pages starting at pg1 to journal */ + int ii; /* Loop counter */ + int needSync = 0; /* True if any page has PGHDR_NEED_SYNC */ + Pager *pPager = pPg->pPager; /* The pager that owns pPg */ + Pgno nPagePerSector = (pPager->sectorSize/pPager->pageSize); + + /* Set the doNotSpill NOSYNC bit to 1. This is because we cannot allow + ** a journal header to be written between the pages journaled by + ** this function. + */ + assert( !MEMDB ); + assert( (pPager->doNotSpill & SPILLFLAG_NOSYNC)==0 ); + pPager->doNotSpill |= SPILLFLAG_NOSYNC; + + /* This trick assumes that both the page-size and sector-size are + ** an integer power of 2. It sets variable pg1 to the identifier + ** of the first page of the sector pPg is located on. + */ + pg1 = ((pPg->pgno-1) & ~(nPagePerSector-1)) + 1; + + nPageCount = pPager->dbSize; + if( pPg->pgno>nPageCount ){ + nPage = (pPg->pgno - pg1)+1; + }else if( (pg1+nPagePerSector-1)>nPageCount ){ + nPage = nPageCount+1-pg1; + }else{ + nPage = nPagePerSector; + } + assert(nPage>0); + assert(pg1<=pPg->pgno); + assert((pg1+nPage)>pPg->pgno); + + for(ii=0; iipgno || !sqlite3BitvecTest(pPager->pInJournal, pg) ){ + if( pg!=PAGER_MJ_PGNO(pPager) ){ + rc = sqlite3PagerGet(pPager, pg, &pPage, 0); + if( rc==SQLITE_OK ){ + rc = pager_write(pPage); + if( pPage->flags&PGHDR_NEED_SYNC ){ + needSync = 1; + } + sqlite3PagerUnrefNotNull(pPage); + } + } + }else if( (pPage = sqlite3PagerLookup(pPager, pg))!=0 ){ + if( pPage->flags&PGHDR_NEED_SYNC ){ + needSync = 1; + } + sqlite3PagerUnrefNotNull(pPage); + } + } + + /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages + ** starting at pg1, then it needs to be set for all of them. Because + ** writing to any of these nPage pages may damage the others, the + ** journal file must contain sync()ed copies of all of them + ** before any of them can be written out to the database file. + */ + if( rc==SQLITE_OK && needSync ){ + assert( !MEMDB ); + for(ii=0; iiflags |= PGHDR_NEED_SYNC; + sqlite3PagerUnrefNotNull(pPage); + } + } + } + + assert( (pPager->doNotSpill & SPILLFLAG_NOSYNC)!=0 ); + pPager->doNotSpill &= ~SPILLFLAG_NOSYNC; + return rc; +} + /* ** Mark a data page as writeable. This routine must be called before ** making changes to a page. The caller must check the return value @@ -45203,96 +52847,22 @@ static int pager_write(PgHdr *pPg){ ** If an error occurs, SQLITE_NOMEM or an IO error code is returned ** as appropriate. Otherwise, SQLITE_OK. */ -SQLITE_PRIVATE int sqlite3PagerWrite(DbPage *pDbPage){ - int rc = SQLITE_OK; - - PgHdr *pPg = pDbPage; +SQLITE_PRIVATE int sqlite3PagerWrite(PgHdr *pPg){ Pager *pPager = pPg->pPager; - assert( (pPg->flags & PGHDR_MMAP)==0 ); assert( pPager->eState>=PAGER_WRITER_LOCKED ); - assert( pPager->eState!=PAGER_ERROR ); assert( assert_pager_state(pPager) ); - - if( pPager->sectorSize > (u32)pPager->pageSize ){ - Pgno nPageCount; /* Total number of pages in database file */ - Pgno pg1; /* First page of the sector pPg is located on. */ - int nPage = 0; /* Number of pages starting at pg1 to journal */ - int ii; /* Loop counter */ - int needSync = 0; /* True if any page has PGHDR_NEED_SYNC */ - Pgno nPagePerSector = (pPager->sectorSize/pPager->pageSize); - - /* Set the doNotSpill NOSYNC bit to 1. This is because we cannot allow - ** a journal header to be written between the pages journaled by - ** this function. - */ - assert( !MEMDB ); - assert( (pPager->doNotSpill & SPILLFLAG_NOSYNC)==0 ); - pPager->doNotSpill |= SPILLFLAG_NOSYNC; - - /* This trick assumes that both the page-size and sector-size are - ** an integer power of 2. It sets variable pg1 to the identifier - ** of the first page of the sector pPg is located on. - */ - pg1 = ((pPg->pgno-1) & ~(nPagePerSector-1)) + 1; - - nPageCount = pPager->dbSize; - if( pPg->pgno>nPageCount ){ - nPage = (pPg->pgno - pg1)+1; - }else if( (pg1+nPagePerSector-1)>nPageCount ){ - nPage = nPageCount+1-pg1; - }else{ - nPage = nPagePerSector; - } - assert(nPage>0); - assert(pg1<=pPg->pgno); - assert((pg1+nPage)>pPg->pgno); - - for(ii=0; iipgno || !sqlite3BitvecTest(pPager->pInJournal, pg) ){ - if( pg!=PAGER_MJ_PGNO(pPager) ){ - rc = sqlite3PagerGet(pPager, pg, &pPage); - if( rc==SQLITE_OK ){ - rc = pager_write(pPage); - if( pPage->flags&PGHDR_NEED_SYNC ){ - needSync = 1; - } - sqlite3PagerUnrefNotNull(pPage); - } - } - }else if( (pPage = pager_lookup(pPager, pg))!=0 ){ - if( pPage->flags&PGHDR_NEED_SYNC ){ - needSync = 1; - } - sqlite3PagerUnrefNotNull(pPage); - } - } - - /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages - ** starting at pg1, then it needs to be set for all of them. Because - ** writing to any of these nPage pages may damage the others, the - ** journal file must contain sync()ed copies of all of them - ** before any of them can be written out to the database file. - */ - if( rc==SQLITE_OK && needSync ){ - assert( !MEMDB ); - for(ii=0; iiflags |= PGHDR_NEED_SYNC; - sqlite3PagerUnrefNotNull(pPage); - } - } - } - - assert( (pPager->doNotSpill & SPILLFLAG_NOSYNC)!=0 ); - pPager->doNotSpill &= ~SPILLFLAG_NOSYNC; + if( (pPg->flags & PGHDR_WRITEABLE)!=0 && pPager->dbSize>=pPg->pgno ){ + if( pPager->nSavepoint ) return subjournalPageIfRequired(pPg); + return SQLITE_OK; + }else if( pPager->errCode ){ + return pPager->errCode; + }else if( pPager->sectorSize > (u32)pPager->pageSize ){ + assert( pPager->tempFile==0 ); + return pagerWriteLargeSector(pPg); }else{ - rc = pager_write(pDbPage); + return pager_write(pPg); } - return rc; } /* @@ -45302,7 +52872,7 @@ SQLITE_PRIVATE int sqlite3PagerWrite(DbPage *pDbPage){ */ #ifndef NDEBUG SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage *pPg){ - return pPg->flags&PGHDR_DIRTY; + return pPg->flags & PGHDR_WRITEABLE; } #endif @@ -45319,13 +52889,21 @@ SQLITE_PRIVATE int sqlite3PagerIswriteable(DbPage *pPg){ ** ** Tests show that this optimization can quadruple the speed of large ** DELETE operations. +** +** This optimization cannot be used with a temp-file, as the page may +** have been dirty at the start of the transaction. In that case, if +** memory pressure forces page pPg out of the cache, the data does need +** to be written out to disk so that it may be read back in if the +** current transaction is rolled back. */ SQLITE_PRIVATE void sqlite3PagerDontWrite(PgHdr *pPg){ Pager *pPager = pPg->pPager; - if( (pPg->flags&PGHDR_DIRTY) && pPager->nSavepoint==0 ){ + if( !pPager->tempFile && (pPg->flags&PGHDR_DIRTY) && pPager->nSavepoint==0 ){ PAGERTRACE(("DONT_WRITE page %d of %d\n", pPg->pgno, PAGERID(pPager))); IOTRACE(("CLEAN %p %d\n", pPager, pPg->pgno)) pPg->flags |= PGHDR_DONT_WRITE; + pPg->flags &= ~PGHDR_WRITEABLE; + testcase( pPg->flags & PGHDR_NEED_SYNC ); pager_set_pagehash(pPg); } } @@ -45384,7 +52962,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ assert( !pPager->tempFile && isOpen(pPager->fd) ); /* Open page 1 of the file for writing. */ - rc = sqlite3PagerGet(pPager, 1, &pPgHdr); + rc = sqlite3PagerGet(pPager, 1, &pPgHdr, 0); assert( pPgHdr==0 || rc==SQLITE_OK ); /* If page one was fetched successfully, and this function is not @@ -45404,7 +52982,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ if( DIRECT_MODE ){ const void *zBuf; assert( pPager->dbFileSize>0 ); - CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM, zBuf); + CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM_BKPT, zBuf); if( rc==SQLITE_OK ){ rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0); pPager->aStat[PAGER_STAT_WRITE]++; @@ -45462,14 +53040,17 @@ SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){ ** returned. */ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){ - int rc = SQLITE_OK; - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - || pPager->eState==PAGER_WRITER_LOCKED - ); + int rc = pPager->errCode; assert( assert_pager_state(pPager) ); - if( 0==pagerUseWal(pPager) ){ - rc = pager_wait_on_lock(pPager, EXCLUSIVE_LOCK); + if( rc==SQLITE_OK ){ + assert( pPager->eState==PAGER_WRITER_CACHEMOD + || pPager->eState==PAGER_WRITER_DBMOD + || pPager->eState==PAGER_WRITER_LOCKED + ); + assert( assert_pager_state(pPager) ); + if( 0==pagerUseWal(pPager) ){ + rc = pager_wait_on_lock(pPager, EXCLUSIVE_LOCK); + } } return rc; } @@ -45517,17 +53098,21 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( /* If a prior error occurred, report that error again. */ if( NEVER(pPager->errCode) ) return pPager->errCode; + /* Provide the ability to easily simulate an I/O error during testing */ + if( sqlite3FaultSim(400) ) return SQLITE_IOERR; + PAGERTRACE(("DATABASE SYNC: File=%s zMaster=%s nSize=%d\n", pPager->zFilename, zMaster, pPager->dbSize)); /* If no database changes have been made, return early. */ if( pPager->eStatetempFile ); + assert( isOpen(pPager->fd) || pPager->tempFile ); + if( 0==pagerFlushOnCommit(pPager, 1) ){ /* If this is an in-memory db, or no pages have been written to, or this ** function has already been called, it is mostly a no-op. However, any - ** backup in progress needs to be restarted. - */ + ** backup in progress needs to be restarted. */ sqlite3BackupRestart(pPager->pBackup); }else{ if( pagerUseWal(pPager) ){ @@ -45536,7 +53121,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne( if( pList==0 ){ /* Must have at least one page for the WAL commit flag. ** Ticket [2d1a5c67dfc2363e44f29d9bbd57f] 2011-05-18 */ - rc = sqlite3PagerGet(pPager, 1, &pPageOne); + rc = sqlite3PagerGet(pPager, 1, &pPageOne, 0); pList = pPageOne; pList->pDirty = 0; } @@ -45708,6 +53293,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){ } PAGERTRACE(("COMMIT %d\n", PAGERID(pPager))); + pPager->iDataVersion++; rc = pager_end_transaction(pPager, pPager->setMaster, 1); return pager_error(pPager, rc); } @@ -45765,6 +53351,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){ */ pPager->errCode = SQLITE_ABORT; pPager->eState = PAGER_ERROR; + setGetterMethod(pPager); return rc; } }else{ @@ -45791,12 +53378,14 @@ SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager *pPager){ return pPager->readOnly; } +#ifdef SQLITE_DEBUG /* -** Return the number of references to the pager. +** Return the sum of the reference counts for all pages held by pPager. */ SQLITE_PRIVATE int sqlite3PagerRefcount(Pager *pPager){ return sqlite3PcacheRefCount(pPager->pPCache); } +#endif /* ** Return the approximate number of bytes of memory currently @@ -45863,10 +53452,10 @@ SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, i } /* -** Return true if this is an in-memory pager. +** Return true if this is an in-memory or temp-file backed pager. */ SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){ - return MEMDB; + return pPager->tempFile; } /* @@ -45879,54 +53468,62 @@ SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager *pPager){ ** occurs while opening the sub-journal file, then an IO error code is ** returned. Otherwise, SQLITE_OK. */ -SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ +static SQLITE_NOINLINE int pagerOpenSavepoint(Pager *pPager, int nSavepoint){ int rc = SQLITE_OK; /* Return code */ int nCurrent = pPager->nSavepoint; /* Current number of savepoints */ + int ii; /* Iterator variable */ + PagerSavepoint *aNew; /* New Pager.aSavepoint array */ assert( pPager->eState>=PAGER_WRITER_LOCKED ); assert( assert_pager_state(pPager) ); + assert( nSavepoint>nCurrent && pPager->useJournal ); - if( nSavepoint>nCurrent && pPager->useJournal ){ - int ii; /* Iterator variable */ - PagerSavepoint *aNew; /* New Pager.aSavepoint array */ - - /* Grow the Pager.aSavepoint array using realloc(). Return SQLITE_NOMEM - ** if the allocation fails. Otherwise, zero the new portion in case a - ** malloc failure occurs while populating it in the for(...) loop below. - */ - aNew = (PagerSavepoint *)sqlite3Realloc( - pPager->aSavepoint, sizeof(PagerSavepoint)*nSavepoint - ); - if( !aNew ){ - return SQLITE_NOMEM; - } - memset(&aNew[nCurrent], 0, (nSavepoint-nCurrent) * sizeof(PagerSavepoint)); - pPager->aSavepoint = aNew; - - /* Populate the PagerSavepoint structures just allocated. */ - for(ii=nCurrent; iidbSize; - if( isOpen(pPager->jfd) && pPager->journalOff>0 ){ - aNew[ii].iOffset = pPager->journalOff; - }else{ - aNew[ii].iOffset = JOURNAL_HDR_SZ(pPager); - } - aNew[ii].iSubRec = pPager->nSubRec; - aNew[ii].pInSavepoint = sqlite3BitvecCreate(pPager->dbSize); - if( !aNew[ii].pInSavepoint ){ - return SQLITE_NOMEM; - } - if( pagerUseWal(pPager) ){ - sqlite3WalSavepoint(pPager->pWal, aNew[ii].aWalData); - } - pPager->nSavepoint = ii+1; - } - assert( pPager->nSavepoint==nSavepoint ); - assertTruncateConstraint(pPager); + /* Grow the Pager.aSavepoint array using realloc(). Return SQLITE_NOMEM + ** if the allocation fails. Otherwise, zero the new portion in case a + ** malloc failure occurs while populating it in the for(...) loop below. + */ + aNew = (PagerSavepoint *)sqlite3Realloc( + pPager->aSavepoint, sizeof(PagerSavepoint)*nSavepoint + ); + if( !aNew ){ + return SQLITE_NOMEM_BKPT; } + memset(&aNew[nCurrent], 0, (nSavepoint-nCurrent) * sizeof(PagerSavepoint)); + pPager->aSavepoint = aNew; + /* Populate the PagerSavepoint structures just allocated. */ + for(ii=nCurrent; iidbSize; + if( isOpen(pPager->jfd) && pPager->journalOff>0 ){ + aNew[ii].iOffset = pPager->journalOff; + }else{ + aNew[ii].iOffset = JOURNAL_HDR_SZ(pPager); + } + aNew[ii].iSubRec = pPager->nSubRec; + aNew[ii].pInSavepoint = sqlite3BitvecCreate(pPager->dbSize); + if( !aNew[ii].pInSavepoint ){ + return SQLITE_NOMEM_BKPT; + } + if( pagerUseWal(pPager) ){ + sqlite3WalSavepoint(pPager->pWal, aNew[ii].aWalData); + } + pPager->nSavepoint = ii+1; + } + assert( pPager->nSavepoint==nSavepoint ); + assertTruncateConstraint(pPager); return rc; } +SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ + assert( pPager->eState>=PAGER_WRITER_LOCKED ); + assert( assert_pager_state(pPager) ); + + if( nSavepoint>pPager->nSavepoint && pPager->useJournal ){ + return pagerOpenSavepoint(pPager, nSavepoint); + }else{ + return SQLITE_OK; + } +} + /* ** This function is called to rollback or release (commit) a savepoint. @@ -45959,7 +53556,11 @@ SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ ** savepoint. If no errors occur, SQLITE_OK is returned. */ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ - int rc = pPager->errCode; /* Return code */ + int rc = pPager->errCode; + +#ifdef SQLITE_ENABLE_ZIPVFS + if( op==SAVEPOINT_RELEASE ) rc = SQLITE_OK; +#endif assert( op==SAVEPOINT_RELEASE || op==SAVEPOINT_ROLLBACK ); assert( iSavepoint>=0 || op==SAVEPOINT_ROLLBACK ); @@ -45983,7 +53584,7 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ if( op==SAVEPOINT_RELEASE ){ if( nNew==0 && isOpen(pPager->sjfd) ){ /* Only truncate if it is an in-memory sub-journal. */ - if( sqlite3IsMemJournal(pPager->sjfd) ){ + if( sqlite3JournalIsInMemory(pPager->sjfd) ){ rc = sqlite3OsTruncate(pPager->sjfd, 0); assert( rc==SQLITE_OK ); } @@ -46000,6 +53601,21 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ rc = pagerPlaybackSavepoint(pPager, pSavepoint); assert(rc!=SQLITE_DONE); } + +#ifdef SQLITE_ENABLE_ZIPVFS + /* If the cache has been modified but the savepoint cannot be rolled + ** back journal_mode=off, put the pager in the error state. This way, + ** if the VFS used by this pager includes ZipVFS, the entire transaction + ** can be rolled back at the ZipVFS level. */ + else if( + pPager->journalMode==PAGER_JOURNALMODE_OFF + && pPager->eState>=PAGER_WRITER_CACHEMOD + ){ + pPager->errCode = SQLITE_ABORT; + pPager->eState = PAGER_ERROR; + setGetterMethod(pPager); + } +#endif } return rc; @@ -46022,7 +53638,7 @@ SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager *pPager, int nullIfMemDb){ /* ** Return the VFS structure for the pager. */ -SQLITE_PRIVATE const sqlite3_vfs *sqlite3PagerVfs(Pager *pPager){ +SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager *pPager){ return pPager->pVfs; } @@ -46035,6 +53651,18 @@ SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager *pPager){ return pPager->fd; } +/* +** Return the file handle for the journal file (if it exists). +** This will be either the rollback journal or the WAL file. +*/ +SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager *pPager){ +#if SQLITE_OMIT_WAL + return pPager->jfd; +#else + return pPager->pWal ? sqlite3WalFile(pPager->pWal) : pPager->jfd; +#endif +} + /* ** Return the full pathname of the journal file. */ @@ -46042,14 +53670,6 @@ SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager *pPager){ return pPager->zJournal; } -/* -** Return true if fsync() calls are disabled for this pager. Return FALSE -** if fsync()s are executed normally. -*/ -SQLITE_PRIVATE int sqlite3PagerNosync(Pager *pPager){ - return pPager->noSync; -} - #ifdef SQLITE_HAS_CODEC /* ** Set or retrieve the codec for this pager @@ -46066,6 +53686,7 @@ SQLITE_PRIVATE void sqlite3PagerSetCodec( pPager->xCodecSizeChng = xCodecSizeChng; pPager->xCodecFree = xCodecFree; pPager->pCodec = pCodec; + setGetterMethod(pPager); pagerReportSize(pPager); } SQLITE_PRIVATE void *sqlite3PagerGetCodec(Pager *pPager){ @@ -46134,7 +53755,8 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i /* In order to be able to rollback, an in-memory database must journal ** the page we are moving from. */ - if( MEMDB ){ + assert( pPager->tempFile || !MEMDB ); + if( pPager->tempFile ){ rc = sqlite3PagerWrite(pPg); if( rc ) return rc; } @@ -46157,9 +53779,8 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i ** one or more savepoint bitvecs. This is the reason this function ** may return SQLITE_NOMEM. */ - if( pPg->flags&PGHDR_DIRTY - && subjRequiresPage(pPg) - && SQLITE_OK!=(rc = subjournalPage(pPg)) + if( (pPg->flags & PGHDR_DIRTY)!=0 + && SQLITE_OK!=(rc = subjournalPageIfRequired(pPg)) ){ return rc; } @@ -46188,11 +53809,11 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i ** for the page moved there. */ pPg->flags &= ~PGHDR_NEED_SYNC; - pPgOld = pager_lookup(pPager, pgno); + pPgOld = sqlite3PagerLookup(pPager, pgno); assert( !pPgOld || pPgOld->nRef==1 ); if( pPgOld ){ pPg->flags |= (pPgOld->flags&PGHDR_NEED_SYNC); - if( MEMDB ){ + if( pPager->tempFile ){ /* Do not discard pages from an in-memory database since we might ** need to rollback later. Just move the page out of the way. */ sqlite3PcacheMove(pPgOld, pPager->dbSize+1); @@ -46209,8 +53830,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i ** to exist, in case the transaction needs to roll back. Use pPgOld ** as the original page since it has already been allocated. */ - if( MEMDB ){ - assert( pPgOld ); + if( pPager->tempFile && pPgOld ){ sqlite3PcacheMove(pPgOld, origPgno); sqlite3PagerUnrefNotNull(pPgOld); } @@ -46231,7 +53851,7 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i ** the journal file twice, but that is not a problem. */ PgHdr *pPgHdr; - rc = sqlite3PagerGet(pPager, needSyncPgno, &pPgHdr); + rc = sqlite3PagerGet(pPager, needSyncPgno, &pPgHdr, 0); if( rc!=SQLITE_OK ){ if( needSyncPgno<=pPager->dbOrigSize ){ assert( pPager->pTmpSpace!=0 ); @@ -46248,6 +53868,18 @@ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, i } #endif +/* +** The page handle passed as the first argument refers to a dirty page +** with a page number other than iNew. This function changes the page's +** page number to iNew and sets the value of the PgHdr.flags field to +** the value passed as the third parameter. +*/ +SQLITE_PRIVATE void sqlite3PagerRekey(DbPage *pPg, Pgno iNew, u16 flags){ + assert( pPg->pgno!=iNew ); + pPg->flags = flags; + sqlite3PcacheMove(pPg, iNew); +} + /* ** Return a pointer to the data for the specified page. */ @@ -46393,6 +54025,8 @@ SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){ } assert( state==pPager->eState ); } + }else if( eMode==PAGER_JOURNALMODE_OFF ){ + sqlite3OsClose(pPager->jfd); } } @@ -46448,10 +54082,12 @@ SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager *pPager){ ** Unless this is an in-memory or temporary database, clear the pager cache. */ SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *pPager){ - if( !MEMDB && pPager->tempFile==0 ) pager_reset(pPager); + assert( MEMDB==0 || pPager->tempFile ); + if( pPager->tempFile==0 ) pager_reset(pPager); } #endif + #ifndef SQLITE_OMIT_WAL /* ** This function is called when the user invokes "PRAGMA wal_checkpoint", @@ -46460,11 +54096,18 @@ SQLITE_PRIVATE void sqlite3PagerClearCache(Pager *pPager){ ** ** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART. */ -SQLITE_PRIVATE int sqlite3PagerCheckpoint(Pager *pPager, int eMode, int *pnLog, int *pnCkpt){ +SQLITE_PRIVATE int sqlite3PagerCheckpoint( + Pager *pPager, /* Checkpoint on this pager */ + sqlite3 *db, /* Db handle used to check for interrupts */ + int eMode, /* Type of checkpoint */ + int *pnLog, /* OUT: Final number of frames in log */ + int *pnCkpt /* OUT: Final number of checkpointed frames */ +){ int rc = SQLITE_OK; if( pPager->pWal ){ - rc = sqlite3WalCheckpoint(pPager->pWal, eMode, - pPager->xBusyHandler, pPager->pBusyHandlerArg, + rc = sqlite3WalCheckpoint(pPager->pWal, db, eMode, + (eMode==SQLITE_CHECKPOINT_PASSIVE ? 0 : pPager->xBusyHandler), + pPager->pBusyHandlerArg, pPager->ckptSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace, pnLog, pnCkpt ); @@ -46482,6 +54125,7 @@ SQLITE_PRIVATE int sqlite3PagerWalCallback(Pager *pPager){ */ SQLITE_PRIVATE int sqlite3PagerWalSupported(Pager *pPager){ const sqlite3_io_methods *pMethods = pPager->fd->pMethods; + if( pPager->noLock ) return 0; return pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap); } @@ -46593,7 +54237,7 @@ SQLITE_PRIVATE int sqlite3PagerOpenWal( ** error (SQLITE_BUSY) is returned and the log connection is not closed. ** If successful, the EXCLUSIVE lock is not released before returning. */ -SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager){ +SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){ int rc = SQLITE_OK; assert( pPager->journalMode==PAGER_JOURNALMODE_WAL ); @@ -46621,15 +54265,58 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager){ if( rc==SQLITE_OK && pPager->pWal ){ rc = pagerExclusiveLock(pPager); if( rc==SQLITE_OK ){ - rc = sqlite3WalClose(pPager->pWal, pPager->ckptSyncFlags, + rc = sqlite3WalClose(pPager->pWal, db, pPager->ckptSyncFlags, pPager->pageSize, (u8*)pPager->pTmpSpace); pPager->pWal = 0; pagerFixMaplimit(pPager); + if( rc && !pPager->exclusiveMode ) pagerUnlockDb(pPager, SHARED_LOCK); } } return rc; } +#ifdef SQLITE_ENABLE_SNAPSHOT +/* +** If this is a WAL database, obtain a snapshot handle for the snapshot +** currently open. Otherwise, return an error. +*/ +SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot){ + int rc = SQLITE_ERROR; + if( pPager->pWal ){ + rc = sqlite3WalSnapshotGet(pPager->pWal, ppSnapshot); + } + return rc; +} + +/* +** If this is a WAL database, store a pointer to pSnapshot. Next time a +** read transaction is opened, attempt to read from the snapshot it +** identifies. If this is not a WAL database, return an error. +*/ +SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot){ + int rc = SQLITE_OK; + if( pPager->pWal ){ + sqlite3WalSnapshotOpen(pPager->pWal, pSnapshot); + }else{ + rc = SQLITE_ERROR; + } + return rc; +} + +/* +** If this is a WAL database, call sqlite3WalSnapshotRecover(). If this +** is not a WAL database, return an error. +*/ +SQLITE_PRIVATE int sqlite3PagerSnapshotRecover(Pager *pPager){ + int rc; + if( pPager->pWal ){ + rc = sqlite3WalSnapshotRecover(pPager->pWal); + }else{ + rc = SQLITE_ERROR; + } + return rc; +} +#endif /* SQLITE_ENABLE_SNAPSHOT */ #endif /* !SQLITE_OMIT_WAL */ #ifdef SQLITE_ENABLE_ZIPVFS @@ -46641,7 +54328,7 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager){ ** is empty, return 0. */ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ - assert( pPager->eState==PAGER_READER ); + assert( pPager->eState>=PAGER_READER ); return sqlite3WalFramesize(pPager->pWal); } #endif @@ -46894,6 +54581,7 @@ SQLITE_PRIVATE int sqlite3PagerWalFramesize(Pager *pPager){ */ #ifndef SQLITE_OMIT_WAL +/* #include "wal.h" */ /* ** Trace output macros @@ -46923,7 +54611,8 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0; /* ** Indices of various locking bytes. WAL_NREADER is the number -** of available reader locks and should be at least 3. +** of available reader locks and should be at least 3. The default +** is SQLITE_SHM_NLOCK==8 and WAL_NREADER==5. */ #define WAL_WRITE_LOCK 0 #define WAL_ALL_BUT_WRITE 1 @@ -46943,7 +54632,10 @@ typedef struct WalCkptInfo WalCkptInfo; ** The following object holds a copy of the wal-index header content. ** ** The actual header in the wal-index consists of two copies of this -** object. +** object followed by one instance of the WalCkptInfo object. +** For all versions of SQLite through 3.10.0 and probably beyond, +** the locking bytes (WalCkptInfo.aLock) start at offset 120 and +** the total header size is 136 bytes. ** ** The szPage value can be any power of 2 between 512 and 32768, inclusive. ** Or it can be 1 to represent a 65536-byte page. The latter case was @@ -46976,6 +54668,16 @@ struct WalIndexHdr { ** However, a WAL_WRITE_LOCK thread can move the value of nBackfill from ** mxFrame back to zero when the WAL is reset. ** +** nBackfillAttempted is the largest value of nBackfill that a checkpoint +** has attempted to achieve. Normally nBackfill==nBackfillAtempted, however +** the nBackfillAttempted is set before any backfilling is done and the +** nBackfill is only set after all backfilling completes. So if a checkpoint +** crashes, nBackfillAttempted might be larger than nBackfill. The +** WalIndexHdr.mxFrame must never be less than nBackfillAttempted. +** +** The aLock[] field is a set of bytes used for locking. These bytes should +** never be read or written. +** ** There is one entry in aReadMark[] for each reader lock. If a reader ** holds read-lock K, then the value in aReadMark[K] is no greater than ** the mxFrame for that reader. The value READMARK_NOT_USED (0xffffffff) @@ -47015,6 +54717,9 @@ struct WalIndexHdr { struct WalCkptInfo { u32 nBackfill; /* Number of WAL frames backfilled into DB */ u32 aReadMark[WAL_NREADER]; /* Reader marks */ + u8 aLock[SQLITE_SHM_NLOCK]; /* Reserved space for locks */ + u32 nBackfillAttempted; /* WAL frames perhaps written, or maybe not */ + u32 notUsed0; /* Available for future enhancements */ }; #define READMARK_NOT_USED 0xffffffff @@ -47024,9 +54729,8 @@ struct WalCkptInfo { ** only support mandatory file-locks, we do not read or write data ** from the region of the file on which locks are applied. */ -#define WALINDEX_LOCK_OFFSET (sizeof(WalIndexHdr)*2 + sizeof(WalCkptInfo)) -#define WALINDEX_LOCK_RESERVED 16 -#define WALINDEX_HDR_SIZE (WALINDEX_LOCK_OFFSET+WALINDEX_LOCK_RESERVED) +#define WALINDEX_LOCK_OFFSET (sizeof(WalIndexHdr)*2+offsetof(WalCkptInfo,aLock)) +#define WALINDEX_HDR_SIZE (sizeof(WalIndexHdr)*2+sizeof(WalCkptInfo)) /* Size of header before each frame in wal */ #define WAL_FRAME_HDRSIZE 24 @@ -47079,11 +54783,16 @@ struct Wal { u8 syncHeader; /* Fsync the WAL header if true */ u8 padToSectorBoundary; /* Pad transactions out to the next sector */ WalIndexHdr hdr; /* Wal-index header for current transaction */ + u32 minFrame; /* Ignore wal frames before this one */ + u32 iReCksum; /* On commit, recalculate checksums from here */ const char *zWalName; /* Name of WAL file */ u32 nCkpt; /* Checkpoint sequence counter in the wal-header */ #ifdef SQLITE_DEBUG u8 lockError; /* True if a locking error has occurred */ #endif +#ifdef SQLITE_ENABLE_SNAPSHOT + WalIndexHdr *pSnapshot; /* Start transaction here if not NULL */ +#endif }; /* @@ -47173,10 +54882,10 @@ static int walIndexPage(Wal *pWal, int iPage, volatile u32 **ppPage){ if( pWal->nWiData<=iPage ){ int nByte = sizeof(u32*)*(iPage+1); volatile u32 **apNew; - apNew = (volatile u32 **)sqlite3_realloc((void *)pWal->apWiData, nByte); + apNew = (volatile u32 **)sqlite3_realloc64((void *)pWal->apWiData, nByte); if( !apNew ){ *ppPage = 0; - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memset((void*)&apNew[pWal->nWiData], 0, sizeof(u32*)*(iPage+1-pWal->nWiData)); @@ -47188,7 +54897,7 @@ static int walIndexPage(Wal *pWal, int iPage, volatile u32 **ppPage){ if( pWal->apWiData[iPage]==0 ){ if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){ pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ); - if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM; + if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT; }else{ rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ, pWal->writeLock, (void volatile **)&pWal->apWiData[iPage] @@ -47225,7 +54934,7 @@ static volatile WalIndexHdr *walIndexHdr(Wal *pWal){ ** The argument to this macro must be of type u32. On a little-endian ** architecture, it returns the u32 value that results from interpreting ** the 4 bytes as a big-endian value. On a big-endian architecture, it -** returns the value that would be produced by intepreting the 4 bytes +** returns the value that would be produced by interpreting the 4 bytes ** of the input value as a little-endian integer. */ #define BYTESWAP32(x) ( \ @@ -47299,9 +55008,9 @@ static void walIndexWriteHdr(Wal *pWal){ pWal->hdr.isInit = 1; pWal->hdr.iVersion = WALINDEX_MAX_VERSION; walChecksumBytes(1, (u8*)&pWal->hdr, nCksum, 0, pWal->hdr.aCksum); - memcpy((void *)&aHdr[1], (void *)&pWal->hdr, sizeof(WalIndexHdr)); + memcpy((void*)&aHdr[1], (const void*)&pWal->hdr, sizeof(WalIndexHdr)); walShmBarrier(pWal); - memcpy((void *)&aHdr[0], (void *)&pWal->hdr, sizeof(WalIndexHdr)); + memcpy((void*)&aHdr[0], (const void*)&pWal->hdr, sizeof(WalIndexHdr)); } /* @@ -47329,14 +55038,18 @@ static void walEncodeFrame( assert( WAL_FRAME_HDRSIZE==24 ); sqlite3Put4byte(&aFrame[0], iPage); sqlite3Put4byte(&aFrame[4], nTruncate); - memcpy(&aFrame[8], pWal->hdr.aSalt, 8); + if( pWal->iReCksum==0 ){ + memcpy(&aFrame[8], pWal->hdr.aSalt, 8); - nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN); - walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum); - walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum); + nativeCksum = (pWal->hdr.bigEndCksum==SQLITE_BIGENDIAN); + walChecksumBytes(nativeCksum, aFrame, 8, aCksum, aCksum); + walChecksumBytes(nativeCksum, aData, pWal->szPage, aCksum, aCksum); - sqlite3Put4byte(&aFrame[16], aCksum[0]); - sqlite3Put4byte(&aFrame[20], aCksum[1]); + sqlite3Put4byte(&aFrame[16], aCksum[0]); + sqlite3Put4byte(&aFrame[20], aCksum[1]); + }else{ + memset(&aFrame[8], 0, 16); + } } /* @@ -47602,13 +55315,13 @@ static void walCleanupHash(Wal *pWal){ ** via the hash table even after the cleanup. */ if( iLimit ){ - int i; /* Loop counter */ + int j; /* Loop counter */ int iKey; /* Hash key */ - for(i=1; i<=iLimit; i++){ - for(iKey=walHash(aPgno[i]); aHash[iKey]; iKey=walNextHash(iKey)){ - if( aHash[iKey]==i ) break; + for(j=1; j<=iLimit; j++){ + for(iKey=walHash(aPgno[j]); aHash[iKey]; iKey=walNextHash(iKey)){ + if( aHash[iKey]==j ) break; } - assert( aHash[iKey]==i ); + assert( aHash[iKey]==j ); } } #endif /* SQLITE_ENABLE_EXPENSIVE_ASSERT */ @@ -47639,7 +55352,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){ assert( idx <= HASHTABLE_NSLOT/2 + 1 ); /* If this is the first entry to be added to this hash-table, zero the - ** entire hash table and aPgno[] array before proceding. + ** entire hash table and aPgno[] array before proceeding. */ if( idx==1 ){ int nByte = (int)((u8 *)&aHash[HASHTABLE_NSLOT] - (u8 *)&aPgno[1]); @@ -47797,9 +55510,9 @@ static int walIndexRecover(Wal *pWal){ /* Malloc a buffer to read frames into. */ szFrame = szPage + WAL_FRAME_HDRSIZE; - aFrame = (u8 *)sqlite3_malloc(szFrame); + aFrame = (u8 *)sqlite3_malloc64(szFrame); if( !aFrame ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto recovery_error; } aData = &aFrame[WAL_FRAME_HDRSIZE]; @@ -47848,6 +55561,7 @@ finished: */ pInfo = walCkptInfo(pWal); pInfo->nBackfill = 0; + pInfo->nBackfillAttempted = pWal->hdr.mxFrame; pInfo->aReadMark[0] = 0; for(i=1; iaReadMark[i] = READMARK_NOT_USED; if( pWal->hdr.mxFrame ) pInfo->aReadMark[1] = pWal->hdr.mxFrame; @@ -47919,7 +55633,11 @@ SQLITE_PRIVATE int sqlite3WalOpen( /* In the amalgamation, the os_unix.c and os_win.c source files come before ** this source file. Verify that the #defines of the locking byte offsets ** in os_unix.c and os_win.c agree with the WALINDEX_LOCK_OFFSET value. + ** For that matter, if the lock offset ever changes from its initial design + ** value of 120, we need to know that so there is an assert() to check it. */ + assert( 120==WALINDEX_LOCK_OFFSET ); + assert( 136==WALINDEX_HDR_SIZE ); #ifdef WIN_SHM_BASE assert( WIN_SHM_BASE==WALINDEX_LOCK_OFFSET ); #endif @@ -47932,7 +55650,7 @@ SQLITE_PRIVATE int sqlite3WalOpen( *ppWal = 0; pRet = (Wal*)sqlite3MallocZero(sizeof(Wal) + pVfs->szOsFile); if( !pRet ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pRet->pVfs = pVfs; @@ -47957,7 +55675,7 @@ SQLITE_PRIVATE int sqlite3WalOpen( sqlite3OsClose(pRet->pWalFd); sqlite3_free(pRet); }else{ - int iDC = sqlite3OsDeviceCharacteristics(pRet->pWalFd); + int iDC = sqlite3OsDeviceCharacteristics(pDbFd); if( iDC & SQLITE_IOCAP_SEQUENTIAL ){ pRet->syncHeader = 0; } if( iDC & SQLITE_IOCAP_POWERSAFE_OVERWRITE ){ pRet->padToSectorBoundary = 0; @@ -48110,7 +55828,7 @@ static void walMergesort( int nMerge = 0; /* Number of elements in list aMerge */ ht_slot *aMerge = 0; /* List to be merged */ int iList; /* Index into input list */ - int iSub = 0; /* Index into aSub array */ + u32 iSub = 0; /* Index into aSub array */ struct Sublist aSub[13]; /* Array of sub-lists */ memset(aSub, 0, sizeof(aSub)); @@ -48121,7 +55839,9 @@ static void walMergesort( nMerge = 1; aMerge = &aList[iList]; for(iSub=0; iList & (1<aList && p->nList<=(1<aList==&aList[iList&~((2<aList, p->nList, &aMerge, &nMerge, aBuffer); @@ -48132,7 +55852,9 @@ static void walMergesort( for(iSub++; iSubnList<=(1<aList==&aList[nList&~((2<aList, p->nList, &aMerge, &nMerge, aBuffer); @@ -48155,7 +55877,7 @@ static void walMergesort( ** Free an iterator allocated by walIteratorInit(). */ static void walIteratorFree(WalIterator *p){ - sqlite3ScratchFree(p); + sqlite3_free(p); } /* @@ -48190,9 +55912,9 @@ static int walIteratorInit(Wal *pWal, WalIterator **pp){ nByte = sizeof(WalIterator) + (nSegment-1)*sizeof(struct WalSegment) + iLast*sizeof(ht_slot); - p = (WalIterator *)sqlite3ScratchMalloc(nByte); + p = (WalIterator *)sqlite3_malloc64(nByte); if( !p ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memset(p, 0, nByte); p->nSegment = nSegment; @@ -48200,11 +55922,11 @@ static int walIteratorInit(Wal *pWal, WalIterator **pp){ /* Allocate temporary space used by the merge-sort routine. This block ** of memory will be freed before this function returns. */ - aTmp = (ht_slot *)sqlite3ScratchMalloc( + aTmp = (ht_slot *)sqlite3_malloc64( sizeof(ht_slot) * (iLast>HASHTABLE_NPAGE?HASHTABLE_NPAGE:iLast) ); if( !aTmp ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } for(i=0; rc==SQLITE_OK && iaSegment[i].aPgno = (u32 *)aPgno; } } - sqlite3ScratchFree(aTmp); + sqlite3_free(aTmp); if( rc!=SQLITE_OK ){ walIteratorFree(p); @@ -48274,6 +55996,39 @@ static int walPagesize(Wal *pWal){ return (pWal->hdr.szPage&0xfe00) + ((pWal->hdr.szPage&0x0001)<<16); } +/* +** The following is guaranteed when this function is called: +** +** a) the WRITER lock is held, +** b) the entire log file has been checkpointed, and +** c) any existing readers are reading exclusively from the database +** file - there are no readers that may attempt to read a frame from +** the log file. +** +** This function updates the shared-memory structures so that the next +** client to write to the database (which may be this one) does so by +** writing frames into the start of the log file. +** +** The value of parameter salt1 is used as the aSalt[1] value in the +** new wal-index header. It should be passed a pseudo-random value (i.e. +** one obtained from sqlite3_randomness()). +*/ +static void walRestartHdr(Wal *pWal, u32 salt1){ + volatile WalCkptInfo *pInfo = walCkptInfo(pWal); + int i; /* Loop counter */ + u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */ + pWal->nCkpt++; + pWal->hdr.mxFrame = 0; + sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0])); + memcpy(&pWal->hdr.aSalt[1], &salt1, 4); + walIndexWriteHdr(pWal); + pInfo->nBackfill = 0; + pInfo->nBackfillAttempted = 0; + pInfo->aReadMark[1] = 0; + for(i=2; iaReadMark[i] = READMARK_NOT_USED; + assert( pInfo->aReadMark[0]==0 ); +} + /* ** Copy as much content as we can from the WAL back into the database file ** in response to an sqlite3_wal_checkpoint() request or the equivalent. @@ -48297,7 +56052,7 @@ static int walPagesize(Wal *pWal){ ** database file. ** ** This routine uses and updates the nBackfill field of the wal-index header. -** This is the only routine tha will increase the value of nBackfill. +** This is the only routine that will increase the value of nBackfill. ** (A WAL reset or recovery will revert nBackfill to zero, but not increase ** its value.) ** @@ -48307,13 +56062,14 @@ static int walPagesize(Wal *pWal){ */ static int walCheckpoint( Wal *pWal, /* Wal connection */ + sqlite3 *db, /* Check for interrupts on this handle */ int eMode, /* One of PASSIVE, FULL or RESTART */ - int (*xBusyCall)(void*), /* Function to call when busy */ + int (*xBusy)(void*), /* Function to call when busy */ void *pBusyArg, /* Context argument for xBusyHandler */ int sync_flags, /* Flags for OsSync() (or 0) */ u8 *zBuf /* Temporary buffer to use */ ){ - int rc; /* Return code */ + int rc = SQLITE_OK; /* Return code */ int szPage; /* Database page-size */ WalIterator *pIter = 0; /* Wal iterator context */ u32 iDbpage = 0; /* Next database page to write */ @@ -48322,123 +56078,160 @@ static int walCheckpoint( u32 mxPage; /* Max database page to write */ int i; /* Loop counter */ volatile WalCkptInfo *pInfo; /* The checkpoint status information */ - int (*xBusy)(void*) = 0; /* Function to call when waiting for locks */ szPage = walPagesize(pWal); testcase( szPage<=32768 ); testcase( szPage>=65536 ); pInfo = walCkptInfo(pWal); - if( pInfo->nBackfill>=pWal->hdr.mxFrame ) return SQLITE_OK; + if( pInfo->nBackfillhdr.mxFrame ){ - /* Allocate the iterator */ - rc = walIteratorInit(pWal, &pIter); - if( rc!=SQLITE_OK ){ - return rc; - } - assert( pIter ); - - if( eMode!=SQLITE_CHECKPOINT_PASSIVE ) xBusy = xBusyCall; - - /* Compute in mxSafeFrame the index of the last frame of the WAL that is - ** safe to write into the database. Frames beyond mxSafeFrame might - ** overwrite database pages that are in use by active readers and thus - ** cannot be backfilled from the WAL. - */ - mxSafeFrame = pWal->hdr.mxFrame; - mxPage = pWal->hdr.nPage; - for(i=1; iaReadMark[i]; - if( mxSafeFrame>y ){ - assert( y<=pWal->hdr.mxFrame ); - rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1); - if( rc==SQLITE_OK ){ - pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED); - walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); - }else if( rc==SQLITE_BUSY ){ - mxSafeFrame = y; - xBusy = 0; - }else{ - goto walcheckpoint_out; - } + /* Allocate the iterator */ + rc = walIteratorInit(pWal, &pIter); + if( rc!=SQLITE_OK ){ + return rc; } - } + assert( pIter ); - if( pInfo->nBackfillnBackfill; + /* EVIDENCE-OF: R-62920-47450 The busy-handler callback is never invoked + ** in the SQLITE_CHECKPOINT_PASSIVE mode. */ + assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 ); - /* Sync the WAL to disk */ - if( sync_flags ){ - rc = sqlite3OsSync(pWal->pWalFd, sync_flags); - } - - /* If the database may grow as a result of this checkpoint, hint - ** about the eventual size of the db file to the VFS layer. + /* Compute in mxSafeFrame the index of the last frame of the WAL that is + ** safe to write into the database. Frames beyond mxSafeFrame might + ** overwrite database pages that are in use by active readers and thus + ** cannot be backfilled from the WAL. */ - if( rc==SQLITE_OK ){ - i64 nReq = ((i64)mxPage * szPage); - rc = sqlite3OsFileSize(pWal->pDbFd, &nSize); - if( rc==SQLITE_OK && nSizepDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq); - } - } - - - /* Iterate through the contents of the WAL, copying data to the db file. */ - while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){ - i64 iOffset; - assert( walFramePgno(pWal, iFrame)==iDbpage ); - if( iFrame<=nBackfill || iFrame>mxSafeFrame || iDbpage>mxPage ) continue; - iOffset = walFrameOffset(iFrame, szPage) + WAL_FRAME_HDRSIZE; - /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL file */ - rc = sqlite3OsRead(pWal->pWalFd, zBuf, szPage, iOffset); - if( rc!=SQLITE_OK ) break; - iOffset = (iDbpage-1)*(i64)szPage; - testcase( IS_BIG_INT(iOffset) ); - rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset); - if( rc!=SQLITE_OK ) break; - } - - /* If work was actually accomplished... */ - if( rc==SQLITE_OK ){ - if( mxSafeFrame==walIndexHdr(pWal)->mxFrame ){ - i64 szDb = pWal->hdr.nPage*(i64)szPage; - testcase( IS_BIG_INT(szDb) ); - rc = sqlite3OsTruncate(pWal->pDbFd, szDb); - if( rc==SQLITE_OK && sync_flags ){ - rc = sqlite3OsSync(pWal->pDbFd, sync_flags); + mxSafeFrame = pWal->hdr.mxFrame; + mxPage = pWal->hdr.nPage; + for(i=1; iaReadMark[i]; + if( mxSafeFrame>y ){ + assert( y<=pWal->hdr.mxFrame ); + rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1); + if( rc==SQLITE_OK ){ + pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED); + walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); + }else if( rc==SQLITE_BUSY ){ + mxSafeFrame = y; + xBusy = 0; + }else{ + goto walcheckpoint_out; } } - if( rc==SQLITE_OK ){ - pInfo->nBackfill = mxSafeFrame; - } } - /* Release the reader lock held while backfilling */ - walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1); + if( pInfo->nBackfillnBackfill; + + pInfo->nBackfillAttempted = mxSafeFrame; + + /* Sync the WAL to disk */ + if( sync_flags ){ + rc = sqlite3OsSync(pWal->pWalFd, sync_flags); + } + + /* If the database may grow as a result of this checkpoint, hint + ** about the eventual size of the db file to the VFS layer. + */ + if( rc==SQLITE_OK ){ + i64 nReq = ((i64)mxPage * szPage); + rc = sqlite3OsFileSize(pWal->pDbFd, &nSize); + if( rc==SQLITE_OK && nSizepDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq); + } + } + + + /* Iterate through the contents of the WAL, copying data to the db file */ + while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){ + i64 iOffset; + assert( walFramePgno(pWal, iFrame)==iDbpage ); + if( db->u1.isInterrupted ){ + rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT; + break; + } + if( iFrame<=nBackfill || iFrame>mxSafeFrame || iDbpage>mxPage ){ + continue; + } + iOffset = walFrameOffset(iFrame, szPage) + WAL_FRAME_HDRSIZE; + /* testcase( IS_BIG_INT(iOffset) ); // requires a 4GiB WAL file */ + rc = sqlite3OsRead(pWal->pWalFd, zBuf, szPage, iOffset); + if( rc!=SQLITE_OK ) break; + iOffset = (iDbpage-1)*(i64)szPage; + testcase( IS_BIG_INT(iOffset) ); + rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset); + if( rc!=SQLITE_OK ) break; + } + + /* If work was actually accomplished... */ + if( rc==SQLITE_OK ){ + if( mxSafeFrame==walIndexHdr(pWal)->mxFrame ){ + i64 szDb = pWal->hdr.nPage*(i64)szPage; + testcase( IS_BIG_INT(szDb) ); + rc = sqlite3OsTruncate(pWal->pDbFd, szDb); + if( rc==SQLITE_OK && sync_flags ){ + rc = sqlite3OsSync(pWal->pDbFd, sync_flags); + } + } + if( rc==SQLITE_OK ){ + pInfo->nBackfill = mxSafeFrame; + } + } + + /* Release the reader lock held while backfilling */ + walUnlockExclusive(pWal, WAL_READ_LOCK(0), 1); + } + + if( rc==SQLITE_BUSY ){ + /* Reset the return code so as not to report a checkpoint failure + ** just because there are active readers. */ + rc = SQLITE_OK; + } } - if( rc==SQLITE_BUSY ){ - /* Reset the return code so as not to report a checkpoint failure - ** just because there are active readers. */ - rc = SQLITE_OK; - } - - /* If this is an SQLITE_CHECKPOINT_RESTART operation, and the entire wal - ** file has been copied into the database file, then block until all - ** readers have finished using the wal file. This ensures that the next - ** process to write to the database restarts the wal file. + /* If this is an SQLITE_CHECKPOINT_RESTART or TRUNCATE operation, and the + ** entire wal file has been copied into the database file, then block + ** until all readers have finished using the wal file. This ensures that + ** the next process to write to the database restarts the wal file. */ if( rc==SQLITE_OK && eMode!=SQLITE_CHECKPOINT_PASSIVE ){ assert( pWal->writeLock ); if( pInfo->nBackfillhdr.mxFrame ){ rc = SQLITE_BUSY; - }else if( eMode==SQLITE_CHECKPOINT_RESTART ){ - assert( mxSafeFrame==pWal->hdr.mxFrame ); + }else if( eMode>=SQLITE_CHECKPOINT_RESTART ){ + u32 salt1; + sqlite3_randomness(4, &salt1); + assert( pInfo->nBackfill==pWal->hdr.mxFrame ); rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(1), WAL_NREADER-1); if( rc==SQLITE_OK ){ + if( eMode==SQLITE_CHECKPOINT_TRUNCATE ){ + /* IMPLEMENTATION-OF: R-44699-57140 This mode works the same way as + ** SQLITE_CHECKPOINT_RESTART with the addition that it also + ** truncates the log file to zero bytes just prior to a + ** successful return. + ** + ** In theory, it might be safe to do this without updating the + ** wal-index header in shared memory, as all subsequent reader or + ** writer clients should see that the entire log file has been + ** checkpointed and behave accordingly. This seems unsafe though, + ** as it would leave the system in a state where the contents of + ** the wal-index header do not match the contents of the + ** file-system. To avoid this, update the wal-index header to + ** indicate that the log file contains zero valid frames. */ + walRestartHdr(pWal, salt1); + rc = sqlite3OsTruncate(pWal->pWalFd, 0); + } walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); } } @@ -48472,6 +56265,7 @@ static void walLimitSize(Wal *pWal, i64 nMax){ */ SQLITE_PRIVATE int sqlite3WalClose( Wal *pWal, /* Wal to close */ + sqlite3 *db, /* For interrupt flag */ int sync_flags, /* Flags to pass to OsSync() (or 0) */ int nBuf, u8 *zBuf /* Buffer of at least nBuf bytes */ @@ -48488,13 +56282,14 @@ SQLITE_PRIVATE int sqlite3WalClose( ** ** The EXCLUSIVE lock is not released before returning. */ - rc = sqlite3OsLock(pWal->pDbFd, SQLITE_LOCK_EXCLUSIVE); - if( rc==SQLITE_OK ){ + if( zBuf!=0 + && SQLITE_OK==(rc = sqlite3OsLock(pWal->pDbFd, SQLITE_LOCK_EXCLUSIVE)) + ){ if( pWal->exclusiveMode==WAL_NORMAL_MODE ){ pWal->exclusiveMode = WAL_EXCLUSIVE_MODE; } - rc = sqlite3WalCheckpoint( - pWal, SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0 + rc = sqlite3WalCheckpoint(pWal, db, + SQLITE_CHECKPOINT_PASSIVE, 0, 0, sync_flags, nBuf, zBuf, 0, 0 ); if( rc==SQLITE_OK ){ int bPersist = -1; @@ -48601,7 +56396,7 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){ ** wal-index from the WAL before returning. ** ** Set *pChanged to 1 if the wal-index header value in pWal->hdr is -** changed by this opertion. If pWal->hdr is unchanged, set *pChanged +** changed by this operation. If pWal->hdr is unchanged, set *pChanged ** to 0. ** ** If the wal-index header is successfully read, return SQLITE_OK. @@ -48730,6 +56525,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ int mxI; /* Index of largest aReadMark[] value */ int i; /* Loop counter */ int rc = SQLITE_OK; /* Return code */ + u32 mxFrame; /* Wal frame to lock to */ assert( pWal->readLock<0 ); /* Not currently locked */ @@ -48747,8 +56543,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** calls to sqlite3OsSleep() have a delay of 1 microsecond. Really this ** is more of a scheduler yield than an actual delay. But on the 10th ** an subsequent retries, the delays start becoming longer and longer, - ** so that on the 100th (and last) RETRY we delay for 21 milliseconds. - ** The total delay time before giving up is less than 1 second. + ** so that on the 100th (and last) RETRY we delay for 323 milliseconds. + ** The total delay time before giving up is less than 10 seconds. */ if( cnt>5 ){ int nDelay = 1; /* Pause time in microseconds */ @@ -48756,7 +56552,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ VVA_ONLY( pWal->lockError = 1; ) return SQLITE_PROTOCOL; } - if( cnt>=10 ) nDelay = (cnt-9)*238; /* Max delay 21ms. Total delay 996ms */ + if( cnt>=10 ) nDelay = (cnt-9)*(cnt-9)*39; sqlite3OsSleep(pWal->pVfs, nDelay); } @@ -48793,7 +56589,12 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ } pInfo = walCkptInfo(pWal); - if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame ){ + if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame +#ifdef SQLITE_ENABLE_SNAPSHOT + && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0 + || 0==memcmp(&pWal->hdr, pWal->pSnapshot, sizeof(WalIndexHdr))) +#endif + ){ /* The WAL has been completely backfilled (or it is empty). ** and can be safely ignored. */ @@ -48805,7 +56606,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ ** may have been appended to the log before READ_LOCK(0) was obtained. ** When holding READ_LOCK(0), the reader ignores the entire log file, ** which implies that the database file contains a trustworthy - ** snapshoT. Since holding READ_LOCK(0) prevents a checkpoint from + ** snapshot. Since holding READ_LOCK(0) prevents a checkpoint from ** happening, this is usually correct. ** ** However, if frames have been appended to the log (or if the log @@ -48831,74 +56632,170 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){ */ mxReadMark = 0; mxI = 0; + mxFrame = pWal->hdr.mxFrame; +#ifdef SQLITE_ENABLE_SNAPSHOT + if( pWal->pSnapshot && pWal->pSnapshot->mxFramepSnapshot->mxFrame; + } +#endif for(i=1; iaReadMark[i]; - if( mxReadMark<=thisMark && thisMark<=pWal->hdr.mxFrame ){ + if( mxReadMark<=thisMark && thisMark<=mxFrame ){ assert( thisMark!=READMARK_NOT_USED ); mxReadMark = thisMark; mxI = i; } } - /* There was once an "if" here. The extra "{" is to preserve indentation. */ - { - if( (pWal->readOnly & WAL_SHM_RDONLY)==0 - && (mxReadMarkhdr.mxFrame || mxI==0) - ){ - for(i=1; iaReadMark[i] = pWal->hdr.mxFrame; - mxI = i; - walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); - break; - }else if( rc!=SQLITE_BUSY ){ - return rc; - } + if( (pWal->readOnly & WAL_SHM_RDONLY)==0 + && (mxReadMarkaReadMark[i] = mxFrame; + mxI = i; + walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1); + break; + }else if( rc!=SQLITE_BUSY ){ + return rc; } } - if( mxI==0 ){ - assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 ); - return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTLOCK; - } + } + if( mxI==0 ){ + assert( rc==SQLITE_BUSY || (pWal->readOnly & WAL_SHM_RDONLY)!=0 ); + return rc==SQLITE_BUSY ? WAL_RETRY : SQLITE_READONLY_CANTLOCK; + } - rc = walLockShared(pWal, WAL_READ_LOCK(mxI)); - if( rc ){ - return rc==SQLITE_BUSY ? WAL_RETRY : rc; - } - /* Now that the read-lock has been obtained, check that neither the - ** value in the aReadMark[] array or the contents of the wal-index - ** header have changed. - ** - ** It is necessary to check that the wal-index header did not change - ** between the time it was read and when the shared-lock was obtained - ** on WAL_READ_LOCK(mxI) was obtained to account for the possibility - ** that the log file may have been wrapped by a writer, or that frames - ** that occur later in the log than pWal->hdr.mxFrame may have been - ** copied into the database by a checkpointer. If either of these things - ** happened, then reading the database with the current value of - ** pWal->hdr.mxFrame risks reading a corrupted snapshot. So, retry - ** instead. - ** - ** This does not guarantee that the copy of the wal-index header is up to - ** date before proceeding. That would not be possible without somehow - ** blocking writers. It only guarantees that a dangerous checkpoint or - ** log-wrap (either of which would require an exclusive lock on - ** WAL_READ_LOCK(mxI)) has not occurred since the snapshot was valid. - */ - walShmBarrier(pWal); - if( pInfo->aReadMark[mxI]!=mxReadMark - || memcmp((void *)walIndexHdr(pWal), &pWal->hdr, sizeof(WalIndexHdr)) - ){ - walUnlockShared(pWal, WAL_READ_LOCK(mxI)); - return WAL_RETRY; - }else{ - assert( mxReadMark<=pWal->hdr.mxFrame ); - pWal->readLock = (i16)mxI; - } + rc = walLockShared(pWal, WAL_READ_LOCK(mxI)); + if( rc ){ + return rc==SQLITE_BUSY ? WAL_RETRY : rc; + } + /* Now that the read-lock has been obtained, check that neither the + ** value in the aReadMark[] array or the contents of the wal-index + ** header have changed. + ** + ** It is necessary to check that the wal-index header did not change + ** between the time it was read and when the shared-lock was obtained + ** on WAL_READ_LOCK(mxI) was obtained to account for the possibility + ** that the log file may have been wrapped by a writer, or that frames + ** that occur later in the log than pWal->hdr.mxFrame may have been + ** copied into the database by a checkpointer. If either of these things + ** happened, then reading the database with the current value of + ** pWal->hdr.mxFrame risks reading a corrupted snapshot. So, retry + ** instead. + ** + ** Before checking that the live wal-index header has not changed + ** since it was read, set Wal.minFrame to the first frame in the wal + ** file that has not yet been checkpointed. This client will not need + ** to read any frames earlier than minFrame from the wal file - they + ** can be safely read directly from the database file. + ** + ** Because a ShmBarrier() call is made between taking the copy of + ** nBackfill and checking that the wal-header in shared-memory still + ** matches the one cached in pWal->hdr, it is guaranteed that the + ** checkpointer that set nBackfill was not working with a wal-index + ** header newer than that cached in pWal->hdr. If it were, that could + ** cause a problem. The checkpointer could omit to checkpoint + ** a version of page X that lies before pWal->minFrame (call that version + ** A) on the basis that there is a newer version (version B) of the same + ** page later in the wal file. But if version B happens to like past + ** frame pWal->hdr.mxFrame - then the client would incorrectly assume + ** that it can read version A from the database file. However, since + ** we can guarantee that the checkpointer that set nBackfill could not + ** see any pages past pWal->hdr.mxFrame, this problem does not come up. + */ + pWal->minFrame = pInfo->nBackfill+1; + walShmBarrier(pWal); + if( pInfo->aReadMark[mxI]!=mxReadMark + || memcmp((void *)walIndexHdr(pWal), &pWal->hdr, sizeof(WalIndexHdr)) + ){ + walUnlockShared(pWal, WAL_READ_LOCK(mxI)); + return WAL_RETRY; + }else{ + assert( mxReadMark<=pWal->hdr.mxFrame ); + pWal->readLock = (i16)mxI; } return rc; } +#ifdef SQLITE_ENABLE_SNAPSHOT +/* +** Attempt to reduce the value of the WalCkptInfo.nBackfillAttempted +** variable so that older snapshots can be accessed. To do this, loop +** through all wal frames from nBackfillAttempted to (nBackfill+1), +** comparing their content to the corresponding page with the database +** file, if any. Set nBackfillAttempted to the frame number of the +** first frame for which the wal file content matches the db file. +** +** This is only really safe if the file-system is such that any page +** writes made by earlier checkpointers were atomic operations, which +** is not always true. It is also possible that nBackfillAttempted +** may be left set to a value larger than expected, if a wal frame +** contains content that duplicate of an earlier version of the same +** page. +** +** SQLITE_OK is returned if successful, or an SQLite error code if an +** error occurs. It is not an error if nBackfillAttempted cannot be +** decreased at all. +*/ +SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){ + int rc; + + assert( pWal->readLock>=0 ); + rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1); + if( rc==SQLITE_OK ){ + volatile WalCkptInfo *pInfo = walCkptInfo(pWal); + int szPage = (int)pWal->szPage; + i64 szDb; /* Size of db file in bytes */ + + rc = sqlite3OsFileSize(pWal->pDbFd, &szDb); + if( rc==SQLITE_OK ){ + void *pBuf1 = sqlite3_malloc(szPage); + void *pBuf2 = sqlite3_malloc(szPage); + if( pBuf1==0 || pBuf2==0 ){ + rc = SQLITE_NOMEM; + }else{ + u32 i = pInfo->nBackfillAttempted; + for(i=pInfo->nBackfillAttempted; i>pInfo->nBackfill; i--){ + volatile ht_slot *dummy; + volatile u32 *aPgno; /* Array of page numbers */ + u32 iZero; /* Frame corresponding to aPgno[0] */ + u32 pgno; /* Page number in db file */ + i64 iDbOff; /* Offset of db file entry */ + i64 iWalOff; /* Offset of wal file entry */ + + rc = walHashGet(pWal, walFramePage(i), &dummy, &aPgno, &iZero); + if( rc!=SQLITE_OK ) break; + pgno = aPgno[i-iZero]; + iDbOff = (i64)(pgno-1) * szPage; + + if( iDbOff+szPage<=szDb ){ + iWalOff = walFrameOffset(i, szPage) + WAL_FRAME_HDRSIZE; + rc = sqlite3OsRead(pWal->pWalFd, pBuf1, szPage, iWalOff); + + if( rc==SQLITE_OK ){ + rc = sqlite3OsRead(pWal->pDbFd, pBuf2, szPage, iDbOff); + } + + if( rc!=SQLITE_OK || 0==memcmp(pBuf1, pBuf2, szPage) ){ + break; + } + } + + pInfo->nBackfillAttempted = i-1; + } + } + + sqlite3_free(pBuf1); + sqlite3_free(pBuf2); + } + walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1); + } + + return rc; +} +#endif /* SQLITE_ENABLE_SNAPSHOT */ + /* ** Begin a read transaction on the database. ** @@ -48917,6 +56814,14 @@ SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){ int rc; /* Return code */ int cnt = 0; /* Number of TryBeginRead attempts */ +#ifdef SQLITE_ENABLE_SNAPSHOT + int bChanged = 0; + WalIndexHdr *pSnapshot = pWal->pSnapshot; + if( pSnapshot && memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){ + bChanged = 1; + } +#endif + do{ rc = walTryBeginRead(pWal, pChanged, 0, ++cnt); }while( rc==WAL_RETRY ); @@ -48924,6 +56829,70 @@ SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){ testcase( (rc&0xff)==SQLITE_IOERR ); testcase( rc==SQLITE_PROTOCOL ); testcase( rc==SQLITE_OK ); + +#ifdef SQLITE_ENABLE_SNAPSHOT + if( rc==SQLITE_OK ){ + if( pSnapshot && memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){ + /* At this point the client has a lock on an aReadMark[] slot holding + ** a value equal to or smaller than pSnapshot->mxFrame, but pWal->hdr + ** is populated with the wal-index header corresponding to the head + ** of the wal file. Verify that pSnapshot is still valid before + ** continuing. Reasons why pSnapshot might no longer be valid: + ** + ** (1) The WAL file has been reset since the snapshot was taken. + ** In this case, the salt will have changed. + ** + ** (2) A checkpoint as been attempted that wrote frames past + ** pSnapshot->mxFrame into the database file. Note that the + ** checkpoint need not have completed for this to cause problems. + */ + volatile WalCkptInfo *pInfo = walCkptInfo(pWal); + + assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 ); + assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame ); + + /* It is possible that there is a checkpointer thread running + ** concurrent with this code. If this is the case, it may be that the + ** checkpointer has already determined that it will checkpoint + ** snapshot X, where X is later in the wal file than pSnapshot, but + ** has not yet set the pInfo->nBackfillAttempted variable to indicate + ** its intent. To avoid the race condition this leads to, ensure that + ** there is no checkpointer process by taking a shared CKPT lock + ** before checking pInfo->nBackfillAttempted. + ** + ** TODO: Does the aReadMark[] lock prevent a checkpointer from doing + ** this already? + */ + rc = walLockShared(pWal, WAL_CKPT_LOCK); + + if( rc==SQLITE_OK ){ + /* Check that the wal file has not been wrapped. Assuming that it has + ** not, also check that no checkpointer has attempted to checkpoint any + ** frames beyond pSnapshot->mxFrame. If either of these conditions are + ** true, return SQLITE_BUSY_SNAPSHOT. Otherwise, overwrite pWal->hdr + ** with *pSnapshot and set *pChanged as appropriate for opening the + ** snapshot. */ + if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt)) + && pSnapshot->mxFrame>=pInfo->nBackfillAttempted + ){ + assert( pWal->readLock>0 ); + memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr)); + *pChanged = bChanged; + }else{ + rc = SQLITE_BUSY_SNAPSHOT; + } + + /* Release the shared CKPT lock obtained above. */ + walUnlockShared(pWal, WAL_CKPT_LOCK); + } + + + if( rc!=SQLITE_OK ){ + sqlite3WalEndReadTransaction(pWal); + } + } + } +#endif return rc; } @@ -48955,6 +56924,7 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( u32 iRead = 0; /* If !=0, WAL frame to return data from */ u32 iLast = pWal->hdr.mxFrame; /* Last page in WAL for this reader */ int iHash; /* Used to loop through N hash tables */ + int iMinHash; /* This routine is only be called from within a read transaction. */ assert( pWal->readLock>=0 || pWal->lockError ); @@ -48995,7 +56965,8 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( ** This condition filters out entries that were added to the hash ** table after the current read-transaction had started. */ - for(iHash=walFramePage(iLast); iHash>=0 && iRead==0; iHash--){ + iMinHash = walFramePage(pWal->minFrame); + for(iHash=walFramePage(iLast); iHash>=iMinHash && iRead==0; iHash--){ volatile ht_slot *aHash; /* Pointer to hash table */ volatile u32 *aPgno; /* Pointer to array of page numbers */ u32 iZero; /* Frame number corresponding to aPgno[0] */ @@ -49010,8 +56981,8 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( nCollide = HASHTABLE_NSLOT; for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){ u32 iFrame = aHash[iKey] + iZero; - if( iFrame<=iLast && aPgno[aHash[iKey]]==pgno ){ - /* assert( iFrame>iRead ); -- not true if there is corruption */ + if( iFrame<=iLast && iFrame>=pWal->minFrame && aPgno[aHash[iKey]]==pgno ){ + assert( iFrame>iRead || CORRUPT_DB ); iRead = iFrame; } if( (nCollide--)==0 ){ @@ -49027,7 +56998,8 @@ SQLITE_PRIVATE int sqlite3WalFindFrame( { u32 iRead2 = 0; u32 iTest; - for(iTest=iLast; iTest>0; iTest--){ + assert( pWal->minFrame>0 ); + for(iTest=iLast; iTest>=pWal->minFrame; iTest--){ if( walFramePgno(pWal, iTest)==pgno ){ iRead2 = iTest; break; @@ -49093,6 +57065,7 @@ SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){ /* Cannot start a write transaction without first holding a read ** transaction. */ assert( pWal->readLock>=0 ); + assert( pWal->writeLock==0 && pWal->iReCksum==0 ); if( pWal->readOnly ){ return SQLITE_READONLY; @@ -49128,6 +57101,7 @@ SQLITE_PRIVATE int sqlite3WalEndWriteTransaction(Wal *pWal){ if( pWal->writeLock ){ walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1); pWal->writeLock = 0; + pWal->iReCksum = 0; pWal->truncateOnCommit = 0; } return SQLITE_OK; @@ -49176,7 +57150,6 @@ SQLITE_PRIVATE int sqlite3WalUndo(Wal *pWal, int (*xUndo)(void *, Pgno), void *p } if( iMax!=pWal->hdr.mxFrame ) walCleanupHash(pWal); } - assert( rc==SQLITE_OK ); return rc; } @@ -49225,7 +57198,6 @@ SQLITE_PRIVATE int sqlite3WalSavepointUndo(Wal *pWal, u32 *aWalData){ return rc; } - /* ** This function is called just before writing a set of frames to the log ** file (see sqlite3WalFrames()). It checks to see if, instead of appending @@ -49258,20 +57230,8 @@ static int walRestartLog(Wal *pWal){ ** In theory it would be Ok to update the cache of the header only ** at this point. But updating the actual wal-index header is also ** safe and means there is no special case for sqlite3WalUndo() - ** to handle if this transaction is rolled back. - */ - int i; /* Loop counter */ - u32 *aSalt = pWal->hdr.aSalt; /* Big-endian salt values */ - - pWal->nCkpt++; - pWal->hdr.mxFrame = 0; - sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0])); - aSalt[1] = salt1; - walIndexWriteHdr(pWal); - pInfo->nBackfill = 0; - pInfo->aReadMark[1] = 0; - for(i=2; iaReadMark[i] = READMARK_NOT_USED; - assert( pInfo->aReadMark[0]==0 ); + ** to handle if this transaction is rolled back. */ + walRestartHdr(pWal, salt1); walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1); }else if( rc!=SQLITE_BUSY ){ return rc; @@ -49328,7 +57288,7 @@ static int walWriteToLog( iAmt -= iFirstAmt; pContent = (void*)(iFirstAmt + (char*)pContent); assert( p->syncFlags & (SQLITE_SYNC_NORMAL|SQLITE_SYNC_FULL) ); - rc = sqlite3OsSync(p->pFd, p->syncFlags); + rc = sqlite3OsSync(p->pFd, p->syncFlags & SQLITE_SYNC_MASK); if( iAmt==0 || rc ) return rc; } rc = sqlite3OsWrite(p->pFd, pContent, iAmt, iOffset); @@ -49348,7 +57308,7 @@ static int walWriteOneFrame( void *pData; /* Data actually written */ u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-header in */ #if defined(SQLITE_HAS_CODEC) - if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM; + if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM_BKPT; #else pData = pPage->pData; #endif @@ -49360,6 +57320,59 @@ static int walWriteOneFrame( return rc; } +/* +** This function is called as part of committing a transaction within which +** one or more frames have been overwritten. It updates the checksums for +** all frames written to the wal file by the current transaction starting +** with the earliest to have been overwritten. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +static int walRewriteChecksums(Wal *pWal, u32 iLast){ + const int szPage = pWal->szPage;/* Database page size */ + int rc = SQLITE_OK; /* Return code */ + u8 *aBuf; /* Buffer to load data from wal file into */ + u8 aFrame[WAL_FRAME_HDRSIZE]; /* Buffer to assemble frame-headers in */ + u32 iRead; /* Next frame to read from wal file */ + i64 iCksumOff; + + aBuf = sqlite3_malloc(szPage + WAL_FRAME_HDRSIZE); + if( aBuf==0 ) return SQLITE_NOMEM_BKPT; + + /* Find the checksum values to use as input for the recalculating the + ** first checksum. If the first frame is frame 1 (implying that the current + ** transaction restarted the wal file), these values must be read from the + ** wal-file header. Otherwise, read them from the frame header of the + ** previous frame. */ + assert( pWal->iReCksum>0 ); + if( pWal->iReCksum==1 ){ + iCksumOff = 24; + }else{ + iCksumOff = walFrameOffset(pWal->iReCksum-1, szPage) + 16; + } + rc = sqlite3OsRead(pWal->pWalFd, aBuf, sizeof(u32)*2, iCksumOff); + pWal->hdr.aFrameCksum[0] = sqlite3Get4byte(aBuf); + pWal->hdr.aFrameCksum[1] = sqlite3Get4byte(&aBuf[sizeof(u32)]); + + iRead = pWal->iReCksum; + pWal->iReCksum = 0; + for(; rc==SQLITE_OK && iRead<=iLast; iRead++){ + i64 iOff = walFrameOffset(iRead, szPage); + rc = sqlite3OsRead(pWal->pWalFd, aBuf, szPage+WAL_FRAME_HDRSIZE, iOff); + if( rc==SQLITE_OK ){ + u32 iPgno, nDbSize; + iPgno = sqlite3Get4byte(aBuf); + nDbSize = sqlite3Get4byte(&aBuf[4]); + + walEncodeFrame(pWal, iPgno, nDbSize, &aBuf[WAL_FRAME_HDRSIZE], aFrame); + rc = sqlite3OsWrite(pWal->pWalFd, aFrame, sizeof(aFrame), iOff); + } + } + + sqlite3_free(aBuf); + return rc; +} + /* ** Write a set of frames to the log. The caller must hold the write-lock ** on the log file (obtained using sqlite3WalBeginWriteTransaction()). @@ -49380,6 +57393,8 @@ SQLITE_PRIVATE int sqlite3WalFrames( int szFrame; /* The size of a single frame */ i64 iOffset; /* Next byte to write in WAL file */ WalWriter w; /* The writer */ + u32 iFirst = 0; /* First frame that may be overwritten */ + WalIndexHdr *pLive; /* Pointer to shared header */ assert( pList ); assert( pWal->writeLock ); @@ -49395,6 +57410,11 @@ SQLITE_PRIVATE int sqlite3WalFrames( } #endif + pLive = (WalIndexHdr*)walIndexHdr(pWal); + if( memcmp(&pWal->hdr, (void *)pLive, sizeof(WalIndexHdr))!=0 ){ + iFirst = pLive->mxFrame+1; + } + /* See if it is possible to write these frames into the start of the ** log file, instead of appending to it at pWal->hdr.mxFrame. */ @@ -49459,6 +57479,33 @@ SQLITE_PRIVATE int sqlite3WalFrames( /* Write all frames into the log file exactly once */ for(p=pList; p; p=p->pDirty){ int nDbSize; /* 0 normally. Positive == commit flag */ + + /* Check if this page has already been written into the wal file by + ** the current transaction. If so, overwrite the existing frame and + ** set Wal.writeLock to WAL_WRITELOCK_RECKSUM - indicating that + ** checksums must be recomputed when the transaction is committed. */ + if( iFirst && (p->pDirty || isCommit==0) ){ + u32 iWrite = 0; + VVA_ONLY(rc =) sqlite3WalFindFrame(pWal, p->pgno, &iWrite); + assert( rc==SQLITE_OK || iWrite==0 ); + if( iWrite>=iFirst ){ + i64 iOff = walFrameOffset(iWrite, szPage) + WAL_FRAME_HDRSIZE; + void *pData; + if( pWal->iReCksum==0 || iWriteiReCksum ){ + pWal->iReCksum = iWrite; + } +#if defined(SQLITE_HAS_CODEC) + if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM; +#else + pData = p->pData; +#endif + rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff); + if( rc ) return rc; + p->flags &= ~PGHDR_WAL_APPEND; + continue; + } + } + iFrame++; assert( iOffset==walFrameOffset(iFrame, szPage) ); nDbSize = (isCommit && p->pDirty==0) ? nTruncate : 0; @@ -49466,6 +57513,13 @@ SQLITE_PRIVATE int sqlite3WalFrames( if( rc ) return rc; pLast = p; iOffset += szFrame; + p->flags |= PGHDR_WAL_APPEND; + } + + /* Recalculate checksums within the wal file if required. */ + if( isCommit && pWal->iReCksum ){ + rc = walRewriteChecksums(pWal, iFrame); + if( rc ) return rc; } /* If this is the end of a transaction, then we might need to pad @@ -49473,7 +57527,7 @@ SQLITE_PRIVATE int sqlite3WalFrames( ** ** Padding and syncing only occur if this set of frames complete a ** transaction and if PRAGMA synchronous=FULL. If synchronous==NORMAL - ** or synchonous==OFF, then no padding or syncing are needed. + ** or synchronous==OFF, then no padding or syncing are needed. ** ** If SQLITE_IOCAP_POWERSAFE_OVERWRITE is defined, then padding is not ** needed and only the sync is done. If padding is needed, then the @@ -49483,16 +57537,21 @@ SQLITE_PRIVATE int sqlite3WalFrames( ** past the sector boundary is written after the sync. */ if( isCommit && (sync_flags & WAL_SYNC_TRANSACTIONS)!=0 ){ + int bSync = 1; if( pWal->padToSectorBoundary ){ int sectorSize = sqlite3SectorSize(pWal->pWalFd); w.iSyncPoint = ((iOffset+sectorSize-1)/sectorSize)*sectorSize; + bSync = (w.iSyncPoint==iOffset); + testcase( bSync ); while( iOffsethdr.mxFrame; for(p=pList; p && rc==SQLITE_OK; p=p->pDirty){ + if( (p->flags & PGHDR_WAL_APPEND)==0 ) continue; iFrame++; rc = walIndexAppend(pWal, iFrame, p->pgno); } @@ -49559,7 +57619,8 @@ SQLITE_PRIVATE int sqlite3WalFrames( */ SQLITE_PRIVATE int sqlite3WalCheckpoint( Wal *pWal, /* Wal connection */ - int eMode, /* PASSIVE, FULL or RESTART */ + sqlite3 *db, /* Check this handle's interrupt flag */ + int eMode, /* PASSIVE, FULL, RESTART, or TRUNCATE */ int (*xBusy)(void*), /* Function to call when busy */ void *pBusyArg, /* Context argument for xBusyHandler */ int sync_flags, /* Flags to sync db file with (or 0) */ @@ -49571,29 +57632,42 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint( int rc; /* Return code */ int isChanged = 0; /* True if a new wal-index header is loaded */ int eMode2 = eMode; /* Mode to pass to walCheckpoint() */ + int (*xBusy2)(void*) = xBusy; /* Busy handler for eMode2 */ assert( pWal->ckptLock==0 ); assert( pWal->writeLock==0 ); + /* EVIDENCE-OF: R-62920-47450 The busy-handler callback is never invoked + ** in the SQLITE_CHECKPOINT_PASSIVE mode. */ + assert( eMode!=SQLITE_CHECKPOINT_PASSIVE || xBusy==0 ); + if( pWal->readOnly ) return SQLITE_READONLY; WALTRACE(("WAL%p: checkpoint begins\n", pWal)); + + /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive + ** "checkpoint" lock on the database file. */ rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1); if( rc ){ - /* Usually this is SQLITE_BUSY meaning that another thread or process - ** is already running a checkpoint, or maybe a recovery. But it might - ** also be SQLITE_IOERR. */ + /* EVIDENCE-OF: R-10421-19736 If any other process is running a + ** checkpoint operation at the same time, the lock cannot be obtained and + ** SQLITE_BUSY is returned. + ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured, + ** it will not be invoked in this case. + */ + testcase( rc==SQLITE_BUSY ); + testcase( xBusy!=0 ); return rc; } pWal->ckptLock = 1; - /* If this is a blocking-checkpoint, then obtain the write-lock as well - ** to prevent any writers from running while the checkpoint is underway. - ** This has to be done before the call to walIndexReadHdr() below. + /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and + ** TRUNCATE modes also obtain the exclusive "writer" lock on the database + ** file. ** - ** If the writer lock cannot be obtained, then a passive checkpoint is - ** run instead. Since the checkpointer is not holding the writer lock, - ** there is no point in blocking waiting for any readers. Assuming no - ** other error occurs, this function will return SQLITE_BUSY to the caller. + ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained + ** immediately, and a busy-handler is configured, it is invoked and the + ** writer lock retried until either the busy-handler returns 0 or the + ** lock is successfully obtained. */ if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){ rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1); @@ -49601,6 +57675,7 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint( pWal->writeLock = 1; }else if( rc==SQLITE_BUSY ){ eMode2 = SQLITE_CHECKPOINT_PASSIVE; + xBusy2 = 0; rc = SQLITE_OK; } } @@ -49615,10 +57690,11 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint( /* Copy data from the log to the database file. */ if( rc==SQLITE_OK ){ + if( pWal->hdr.mxFrame && walPagesize(pWal)!=nBuf ){ rc = SQLITE_CORRUPT_BKPT; }else{ - rc = walCheckpoint(pWal, eMode2, xBusy, pBusyArg, sync_flags, zBuf); + rc = walCheckpoint(pWal, db, eMode2, xBusy2, pBusyArg, sync_flags, zBuf); } /* If no error occurred, set the output variables. */ @@ -49730,6 +57806,57 @@ SQLITE_PRIVATE int sqlite3WalHeapMemory(Wal *pWal){ return (pWal && pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ); } +#ifdef SQLITE_ENABLE_SNAPSHOT +/* Create a snapshot object. The content of a snapshot is opaque to +** every other subsystem, so the WAL module can put whatever it needs +** in the object. +*/ +SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapshot){ + int rc = SQLITE_OK; + WalIndexHdr *pRet; + static const u32 aZero[4] = { 0, 0, 0, 0 }; + + assert( pWal->readLock>=0 && pWal->writeLock==0 ); + + if( memcmp(&pWal->hdr.aFrameCksum[0],aZero,16)==0 ){ + *ppSnapshot = 0; + return SQLITE_ERROR; + } + pRet = (WalIndexHdr*)sqlite3_malloc(sizeof(WalIndexHdr)); + if( pRet==0 ){ + rc = SQLITE_NOMEM_BKPT; + }else{ + memcpy(pRet, &pWal->hdr, sizeof(WalIndexHdr)); + *ppSnapshot = (sqlite3_snapshot*)pRet; + } + + return rc; +} + +/* Try to open on pSnapshot when the next read-transaction starts +*/ +SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot){ + pWal->pSnapshot = (WalIndexHdr*)pSnapshot; +} + +/* +** Return a +ve value if snapshot p1 is newer than p2. A -ve value if +** p1 is older than p2 and zero if p1 and p2 are the same snapshot. +*/ +SQLITE_API int sqlite3_snapshot_cmp(sqlite3_snapshot *p1, sqlite3_snapshot *p2){ + WalIndexHdr *pHdr1 = (WalIndexHdr*)p1; + WalIndexHdr *pHdr2 = (WalIndexHdr*)p2; + + /* aSalt[0] is a copy of the value stored in the wal file header. It + ** is incremented each time the wal file is restarted. */ + if( pHdr1->aSalt[0]aSalt[0] ) return -1; + if( pHdr1->aSalt[0]>pHdr2->aSalt[0] ) return +1; + if( pHdr1->mxFramemxFrame ) return -1; + if( pHdr1->mxFrame>pHdr2->mxFrame ) return +1; + return 0; +} +#endif /* SQLITE_ENABLE_SNAPSHOT */ + #ifdef SQLITE_ENABLE_ZIPVFS /* ** If the argument is not NULL, it points to a Wal object that holds a @@ -49742,6 +57869,12 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){ } #endif +/* Return the sqlite3_file object for the WAL file +*/ +SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal){ + return pWal->pWalFd; +} + #endif /* #ifndef SQLITE_OMIT_WAL */ /************** End of wal.c *************************************************/ @@ -49776,7 +57909,7 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file implements a external (disk-based) database using BTrees. +** This file implements an external (disk-based) database using BTrees. ** For a detailed discussion of BTrees, refer to ** ** Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3: @@ -49902,7 +58035,7 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){ ** ** The flags define the format of this btree page. The leaf flag means that ** this page has no children. The zerodata flag means that this page carries -** only keys and no data. The intkey flag means that the key is a integer +** only keys and no data. The intkey flag means that the key is an integer ** which is stored in the key size entry of the cell header rather than in ** the payload area. ** @@ -49980,6 +58113,7 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){ ** 4 Number of leaf pointers on this page ** * zero or more pages numbers of leaves */ +/* #include "sqliteInt.h" */ /* The following value is the maximum cell size assuming a maximum page @@ -49997,6 +58131,7 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal){ /* Forward declarations */ typedef struct MemPage MemPage; typedef struct BtLock BtLock; +typedef struct CellInfo CellInfo; /* ** This is a magic string that appears at the beginning of every @@ -50024,51 +58159,49 @@ typedef struct BtLock BtLock; #define PTF_LEAF 0x08 /* -** As each page of the file is loaded into memory, an instance of the following -** structure is appended and initialized to zero. This structure stores -** information about the page that is decoded from the raw file page. +** An instance of this object stores information about each a single database +** page that has been loaded into memory. The information in this object +** is derived from the raw on-disk page content. ** -** The pParent field points back to the parent page. This allows us to -** walk up the BTree from any leaf to the root. Care must be taken to -** unref() the parent page pointer when this page is no longer referenced. -** The pageDestructor() routine handles that chore. +** As each database page is loaded into memory, the pager allocats an +** instance of this object and zeros the first 8 bytes. (This is the +** "extra" information associated with each page of the pager.) ** ** Access to all fields of this structure is controlled by the mutex ** stored in MemPage.pBt->mutex. */ struct MemPage { u8 isInit; /* True if previously initialized. MUST BE FIRST! */ - u8 nOverflow; /* Number of overflow cell bodies in aCell[] */ - u8 intKey; /* True if intkey flag is set */ - u8 leaf; /* True if leaf flag is set */ - u8 hasData; /* True if this page stores data */ + u8 bBusy; /* Prevent endless loops on corrupt database files */ + u8 intKey; /* True if table b-trees. False for index b-trees */ + u8 intKeyLeaf; /* True if the leaf of an intKey table */ + Pgno pgno; /* Page number for this page */ + /* Only the first 8 bytes (above) are zeroed by pager.c when a new page + ** is allocated. All fields that follow must be initialized before use */ + u8 leaf; /* True if a leaf page */ u8 hdrOffset; /* 100 for page 1. 0 otherwise */ u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */ u8 max1bytePayload; /* min(maxLocal,127) */ + u8 nOverflow; /* Number of overflow cell bodies in aCell[] */ u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */ u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */ u16 cellOffset; /* Index in aData of first cell pointer */ u16 nFree; /* Number of free bytes on the page */ u16 nCell; /* Number of cells on this page, local and ovfl */ u16 maskPage; /* Mask for page offset */ - u16 aiOvfl[5]; /* Insert the i-th overflow cell before the aiOvfl-th + u16 aiOvfl[4]; /* Insert the i-th overflow cell before the aiOvfl-th ** non-overflow cell */ - u8 *apOvfl[5]; /* Pointers to the body of overflow cells */ + u8 *apOvfl[4]; /* Pointers to the body of overflow cells */ BtShared *pBt; /* Pointer to BtShared that this page is part of */ u8 *aData; /* Pointer to disk image of the page data */ u8 *aDataEnd; /* One byte past the end of usable data */ u8 *aCellIdx; /* The cell index area */ + u8 *aDataOfst; /* Same as aData for leaves. aData+4 for interior */ DbPage *pDbPage; /* Pager page handle */ - Pgno pgno; /* Page number for this page */ + u16 (*xCellSize)(MemPage*,u8*); /* cellSizePtr method */ + void (*xParseCell)(MemPage*,u8*,CellInfo*); /* btreeParseCell method */ }; -/* -** The in-memory image of a disk page has the auxiliary information appended -** to the end. EXTRA_SIZE is the number of bytes of space needed to hold -** that extra information. -*/ -#define EXTRA_SIZE sizeof(MemPage) - /* ** A linked list of the following structures is stored at BtShared.pLock. ** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor @@ -50114,8 +58247,10 @@ struct Btree { u8 inTrans; /* TRANS_NONE, TRANS_READ or TRANS_WRITE */ u8 sharable; /* True if we can share pBt with another db */ u8 locked; /* True if db currently has pBt locked */ + u8 hasIncrblobCur; /* True if there are one or more Incrblob cursors */ int wantToLock; /* Number of nested calls to sqlite3BtreeEnter() */ int nBackup; /* Number of backup operations reading this btree */ + u32 iDataVersion; /* Combines with pBt->pPager->iDataVersion */ Btree *pNext; /* List of other sharable Btrees from the same db */ Btree *pPrev; /* Back pointer of the same list */ #ifndef SQLITE_OMIT_SHARED_CACHE @@ -50182,6 +58317,9 @@ struct BtShared { #endif u8 inTransaction; /* Transaction state */ u8 max1bytePayload; /* Maximum first byte of cell for a 1-byte payload */ +#ifdef SQLITE_HAS_CODEC + u8 optimalReserve; /* Desired amount of reserved space per page */ +#endif u16 btsFlags; /* Boolean parameters. See BTS_* macros below */ u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */ u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */ @@ -50201,7 +58339,7 @@ struct BtShared { BtLock *pLock; /* List of locks held on this shared-btree struct */ Btree *pWriter; /* Btree with currently open write transaction */ #endif - u8 *pTmpSpace; /* BtShared.pageSize bytes of space for tmp use */ + u8 *pTmpSpace; /* Temp space sufficient to hold a single cell */ }; /* @@ -50220,15 +58358,11 @@ struct BtShared { ** about a cell. The parseCellPtr() function fills in this structure ** based on information extract from the raw disk page. */ -typedef struct CellInfo CellInfo; struct CellInfo { - i64 nKey; /* The key for INTKEY tables, or number of bytes in key */ - u8 *pCell; /* Pointer to the start of cell content */ - u32 nData; /* Number of bytes of data */ - u32 nPayload; /* Total amount of payload */ - u16 nHeader; /* Size of the cell content header in bytes */ - u16 nLocal; /* Amount of payload held locally */ - u16 iOverflow; /* Offset to overflow page number. Zero if no overflow */ + i64 nKey; /* The key for INTKEY tables, or nPayload otherwise */ + u8 *pPayload; /* Pointer to the start of payload */ + u32 nPayload; /* Bytes of payload */ + u16 nLocal; /* Amount of payload held locally, not on overflow */ u16 nSize; /* Size of the cell content on the main b-tree page */ }; @@ -50256,34 +58390,49 @@ struct CellInfo { ** ** Fields in this structure are accessed under the BtShared.mutex ** found at self->pBt->mutex. +** +** skipNext meaning: +** eState==SKIPNEXT && skipNext>0: Next sqlite3BtreeNext() is no-op. +** eState==SKIPNEXT && skipNext<0: Next sqlite3BtreePrevious() is no-op. +** eState==FAULT: Cursor fault with skipNext as error code. */ struct BtCursor { Btree *pBtree; /* The Btree to which this cursor belongs */ BtShared *pBt; /* The BtShared this cursor points to */ - BtCursor *pNext, *pPrev; /* Forms a linked list of all cursors */ - struct KeyInfo *pKeyInfo; /* Argument passed to comparison function */ -#ifndef SQLITE_OMIT_INCRBLOB + BtCursor *pNext; /* Forms a linked list of all cursors */ Pgno *aOverflow; /* Cache of overflow page locations */ -#endif - Pgno pgnoRoot; /* The root page of this tree */ - sqlite3_int64 cachedRowid; /* Next rowid cache. 0 means not valid */ CellInfo info; /* A parse of the cell we are pointing at */ - i64 nKey; /* Size of pKey, or last integer key */ - void *pKey; /* Saved key that was cursor's last known position */ - int skipNext; /* Prev() is noop if negative. Next() is noop if positive */ - u8 wrFlag; /* True if writable */ - u8 atLast; /* Cursor pointing to the last entry */ - u8 validNKey; /* True if info.nKey is valid */ + i64 nKey; /* Size of pKey, or last integer key */ + void *pKey; /* Saved key that was cursor last known position */ + Pgno pgnoRoot; /* The root page of this tree */ + int nOvflAlloc; /* Allocated size of aOverflow[] array */ + int skipNext; /* Prev() is noop if negative. Next() is noop if positive. + ** Error code if eState==CURSOR_FAULT */ + u8 curFlags; /* zero or more BTCF_* flags defined below */ + u8 curPagerFlags; /* Flags to send to sqlite3PagerGet() */ u8 eState; /* One of the CURSOR_XXX constants (see below) */ -#ifndef SQLITE_OMIT_INCRBLOB - u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */ -#endif - u8 hints; /* As configured by CursorSetHints() */ - i16 iPage; /* Index of current page in apPage */ + u8 hints; /* As configured by CursorSetHints() */ + /* All fields above are zeroed when the cursor is allocated. See + ** sqlite3BtreeCursorZero(). Fields that follow must be manually + ** initialized. */ + i8 iPage; /* Index of current page in apPage */ + u8 curIntKey; /* Value of apPage[0]->intKey */ + struct KeyInfo *pKeyInfo; /* Argument passed to comparison function */ + void *padding1; /* Make object size a multiple of 16 */ u16 aiIdx[BTCURSOR_MAX_DEPTH]; /* Current index in apPage[i] */ MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */ }; +/* +** Legal values for BtCursor.curFlags +*/ +#define BTCF_WriteFlag 0x01 /* True if a write cursor */ +#define BTCF_ValidNKey 0x02 /* True if info.nKey is valid */ +#define BTCF_ValidOvfl 0x04 /* True if aOverflow is valid */ +#define BTCF_AtLast 0x08 /* Cursor is pointing ot the last entry */ +#define BTCF_Incrblob 0x10 /* True if an incremental I/O handle */ +#define BTCF_Multiple 0x20 /* Maybe another cursor on the same btree */ + /* ** Potential values for BtCursor.eState. ** @@ -50308,11 +58457,11 @@ struct BtCursor { ** seek the cursor to the saved position. ** ** CURSOR_FAULT: -** A unrecoverable error (an I/O error or a malloc failure) has occurred +** An unrecoverable error (an I/O error or a malloc failure) has occurred ** on a different connection that shares the BtShared cache with this ** cursor. The error has left the cache in an inconsistent state. ** Do nothing else with this cursor. Any attempt to use the cursor -** should return the error code stored in BtCursor.skip +** should return the error code stored in BtCursor.skipNext */ #define CURSOR_INVALID 0 #define CURSOR_VALID 1 @@ -50422,7 +58571,10 @@ struct IntegrityCk { int mxErr; /* Stop accumulating errors when this reaches zero */ int nErr; /* Number of messages written to zErrMsg so far */ int mallocFailed; /* A memory allocation error has occurred */ + const char *zPfx; /* Error message prefix */ + int v1, v2; /* Values for up to two %d fields in zPfx */ StrAccum errMsg; /* Accumulate the error message text here */ + u32 *heap; /* Min-heap used for analyzing cell coverage */ }; /* @@ -50433,6 +58585,21 @@ struct IntegrityCk { #define get4byte sqlite3Get4byte #define put4byte sqlite3Put4byte +/* +** get2byteAligned(), unlike get2byte(), requires that its argument point to a +** two-byte aligned address. get2bytea() is only used for accessing the +** cell addresses in a btree header. +*/ +#if SQLITE_BYTEORDER==4321 +# define get2byteAligned(x) (*(u16*)(x)) +#elif SQLITE_BYTEORDER==1234 && GCC_VERSION>=4008000 +# define get2byteAligned(x) __builtin_bswap16(*(u16*)(x)) +#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 +# define get2byteAligned(x) _byteswap_ushort(*(u16*)(x)) +#else +# define get2byteAligned(x) ((x)[0]<<8 | (x)[1]) +#endif + /************** End of btreeInt.h ********************************************/ /************** Continuing where we left off in btmutex.c ********************/ #ifndef SQLITE_OMIT_SHARED_CACHE @@ -50457,7 +58624,7 @@ static void lockBtreeMutex(Btree *p){ ** Release the BtShared mutex associated with B-Tree handle p and ** clear the p->locked boolean. */ -static void unlockBtreeMutex(Btree *p){ +static void SQLITE_NOINLINE unlockBtreeMutex(Btree *p){ BtShared *pBt = p->pBt; assert( p->locked==1 ); assert( sqlite3_mutex_held(pBt->mutex) ); @@ -50468,6 +58635,9 @@ static void unlockBtreeMutex(Btree *p){ p->locked = 0; } +/* Forward reference */ +static void SQLITE_NOINLINE btreeLockCarefully(Btree *p); + /* ** Enter a mutex on the given BTree object. ** @@ -50485,8 +58655,6 @@ static void unlockBtreeMutex(Btree *p){ ** subsequent Btrees that desire a lock. */ SQLITE_PRIVATE void sqlite3BtreeEnter(Btree *p){ - Btree *pLater; - /* Some basic sanity checking on the Btree. The list of Btrees ** connected by pNext and pPrev should be in sorted order by ** Btree.pBt value. All elements of the list should belong to @@ -50511,9 +58679,20 @@ SQLITE_PRIVATE void sqlite3BtreeEnter(Btree *p){ if( !p->sharable ) return; p->wantToLock++; if( p->locked ) return; + btreeLockCarefully(p); +} + +/* This is a helper function for sqlite3BtreeLock(). By moving +** complex, but seldom used logic, out of sqlite3BtreeLock() and +** into this routine, we avoid unnecessary stack pointer changes +** and thus help the sqlite3BtreeLock() routine to run much faster +** in the common case. +*/ +static void SQLITE_NOINLINE btreeLockCarefully(Btree *p){ + Btree *pLater; /* In most cases, we should be able to acquire the lock we - ** want without having to go throught the ascending lock + ** want without having to go through the ascending lock ** procedure that follows. Just be sure not to block. */ if( sqlite3_mutex_try(p->pBt->mutex)==SQLITE_OK ){ @@ -50543,10 +58722,12 @@ SQLITE_PRIVATE void sqlite3BtreeEnter(Btree *p){ } } + /* ** Exit the recursive mutex on a Btree. */ SQLITE_PRIVATE void sqlite3BtreeLeave(Btree *p){ + assert( sqlite3_mutex_held(p->db->mutex) ); if( p->sharable ){ assert( p->wantToLock>0 ); p->wantToLock--; @@ -50574,21 +58755,6 @@ SQLITE_PRIVATE int sqlite3BtreeHoldsMutex(Btree *p){ #endif -#ifndef SQLITE_OMIT_INCRBLOB -/* -** Enter and leave a mutex on a Btree given a cursor owned by that -** Btree. These entry points are used by incremental I/O and can be -** omitted if that module is not used. -*/ -SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){ - sqlite3BtreeEnter(pCur->pBtree); -} -SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){ - sqlite3BtreeLeave(pCur->pBtree); -} -#endif /* SQLITE_OMIT_INCRBLOB */ - - /* ** Enter the mutex on every Btree associated with a database ** connection. This is needed (for example) prior to parsing @@ -50603,16 +58769,24 @@ SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){ ** two or more btrees in common both try to lock all their btrees ** at the same instant. */ -SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){ +static void SQLITE_NOINLINE btreeEnterAll(sqlite3 *db){ int i; + int skipOk = 1; Btree *p; assert( sqlite3_mutex_held(db->mutex) ); for(i=0; inDb; i++){ p = db->aDb[i].pBt; - if( p ) sqlite3BtreeEnter(p); + if( p && p->sharable ){ + sqlite3BtreeEnter(p); + skipOk = 0; + } } + db->skipBtreeMutex = skipOk; } -SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3 *db){ +SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){ + if( db->skipBtreeMutex==0 ) btreeEnterAll(db); +} +static void SQLITE_NOINLINE btreeLeaveAll(sqlite3 *db){ int i; Btree *p; assert( sqlite3_mutex_held(db->mutex) ); @@ -50621,13 +58795,8 @@ SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3 *db){ if( p ) sqlite3BtreeLeave(p); } } - -/* -** Return true if a particular Btree requires a lock. Return FALSE if -** no lock is ever required since it is not sharable. -*/ -SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){ - return p->sharable; +SQLITE_PRIVATE void sqlite3BtreeLeaveAll(sqlite3 *db){ + if( db->skipBtreeMutex==0 ) btreeLeaveAll(db); } #ifndef NDEBUG @@ -50703,6 +58872,25 @@ SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){ } } #endif /* if SQLITE_THREADSAFE */ + +#ifndef SQLITE_OMIT_INCRBLOB +/* +** Enter a mutex on a Btree given a cursor owned by that Btree. +** +** These entry points are used by incremental I/O only. Enter() is required +** any time OMIT_SHARED_CACHE is not defined, regardless of whether or not +** the build is threadsafe. Leave() is only required by threadsafe builds. +*/ +SQLITE_PRIVATE void sqlite3BtreeEnterCursor(BtCursor *pCur){ + sqlite3BtreeEnter(pCur->pBtree); +} +# if SQLITE_THREADSAFE +SQLITE_PRIVATE void sqlite3BtreeLeaveCursor(BtCursor *pCur){ + sqlite3BtreeLeave(pCur->pBtree); +} +# endif +#endif /* ifndef SQLITE_OMIT_INCRBLOB */ + #endif /* ifndef SQLITE_OMIT_SHARED_CACHE */ /************** End of btmutex.c *********************************************/ @@ -50718,10 +58906,11 @@ SQLITE_PRIVATE void sqlite3BtreeEnterAll(sqlite3 *db){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file implements a external (disk-based) database using BTrees. +** This file implements an external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ +/* #include "btreeInt.h" */ /* ** The header string that appears at the beginning of every @@ -50870,7 +59059,7 @@ static int hasSharedCacheTableLock( ** the correct locks are held. So do not bother - just return true. ** This case does not come up very often anyhow. */ - if( isIndex && (!pSchema || (pSchema->flags&DB_SchemaLoaded)==0) ){ + if( isIndex && (!pSchema || (pSchema->schemaFlags&DB_SchemaLoaded)==0) ){ return 1; } @@ -50883,6 +59072,12 @@ static int hasSharedCacheTableLock( for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){ Index *pIdx = (Index *)sqliteHashData(p); if( pIdx->tnum==(int)iRoot ){ + if( iTab ){ + /* Two or more indexes share the same root page. There must + ** be imposter tables. So just return true. The assert is not + ** useful in that case. */ + return 1; + } iTab = pIdx->pTable->tnum; } } @@ -51052,7 +59247,7 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){ if( !pLock ){ pLock = (BtLock *)sqlite3MallocZero(sizeof(BtLock)); if( !pLock ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pLock->iTable = iTable; pLock->pBtree = p; @@ -51152,18 +59347,26 @@ static void releasePage(MemPage *pPage); /* Forward reference */ static int cursorHoldsMutex(BtCursor *p){ return sqlite3_mutex_held(p->pBt->mutex); } + +/* Verify that the cursor and the BtShared agree about what is the current +** database connetion. This is important in shared-cache mode. If the database +** connection pointers get out-of-sync, it is possible for routines like +** btreeInitPage() to reference an stale connection pointer that references a +** a connection that has already closed. This routine is used inside assert() +** statements only and for the purpose of double-checking that the btree code +** does keep the database connection pointers up-to-date. +*/ +static int cursorOwnsBtShared(BtCursor *p){ + assert( cursorHoldsMutex(p) ); + return (p->pBtree->db==p->pBt->db); +} #endif - -#ifndef SQLITE_OMIT_INCRBLOB /* -** Invalidate the overflow page-list cache for cursor pCur, if any. +** Invalidate the overflow cache of the cursor passed as the first argument. +** on the shared btree structure pBt. */ -static void invalidateOverflowCache(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - sqlite3_free(pCur->aOverflow); - pCur->aOverflow = 0; -} +#define invalidateOverflowCache(pCur) (pCur->curFlags &= ~BTCF_ValidOvfl) /* ** Invalidate the overflow page-list cache for all cursors opened @@ -51177,6 +59380,7 @@ static void invalidateAllOverflowCache(BtShared *pBt){ } } +#ifndef SQLITE_OMIT_INCRBLOB /* ** This function is called before modifying the contents of a table ** to invalidate any incrblob cursors that are open on the @@ -51196,19 +59400,21 @@ static void invalidateIncrblobCursors( int isClearTable /* True if all rows are being deleted */ ){ BtCursor *p; - BtShared *pBt = pBtree->pBt; + if( pBtree->hasIncrblobCur==0 ) return; assert( sqlite3BtreeHoldsMutex(pBtree) ); - for(p=pBt->pCursor; p; p=p->pNext){ - if( p->isIncrblobHandle && (isClearTable || p->info.nKey==iRow) ){ - p->eState = CURSOR_INVALID; + pBtree->hasIncrblobCur = 0; + for(p=pBtree->pBt->pCursor; p; p=p->pNext){ + if( (p->curFlags & BTCF_Incrblob)!=0 ){ + pBtree->hasIncrblobCur = 1; + if( isClearTable || p->info.nKey==iRow ){ + p->eState = CURSOR_INVALID; + } } } } #else - /* Stub functions when INCRBLOB is omitted */ - #define invalidateOverflowCache(x) - #define invalidateAllOverflowCache(x) + /* Stub function when INCRBLOB is omitted */ #define invalidateIncrblobCursors(x,y,z) #endif /* SQLITE_OMIT_INCRBLOB */ @@ -51253,7 +59459,7 @@ static int btreeSetHasContent(BtShared *pBt, Pgno pgno){ assert( pgno<=pBt->nPage ); pBt->pHasContent = sqlite3BitvecCreate(pBt->nPage); if( !pBt->pHasContent ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } } if( rc==SQLITE_OK && pgno<=sqlite3BitvecSize(pBt->pHasContent) ){ @@ -51295,6 +59501,47 @@ static void btreeReleaseAllCursorPages(BtCursor *pCur){ pCur->iPage = -1; } +/* +** The cursor passed as the only argument must point to a valid entry +** when this function is called (i.e. have eState==CURSOR_VALID). This +** function saves the current cursor key in variables pCur->nKey and +** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error +** code otherwise. +** +** If the cursor is open on an intkey table, then the integer key +** (the rowid) is stored in pCur->nKey and pCur->pKey is left set to +** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is +** set to point to a malloced buffer pCur->nKey bytes in size containing +** the key. +*/ +static int saveCursorKey(BtCursor *pCur){ + int rc = SQLITE_OK; + assert( CURSOR_VALID==pCur->eState ); + assert( 0==pCur->pKey ); + assert( cursorHoldsMutex(pCur) ); + + if( pCur->curIntKey ){ + /* Only the rowid is required for a table btree */ + pCur->nKey = sqlite3BtreeIntegerKey(pCur); + }else{ + /* For an index btree, save the complete key content */ + void *pKey; + pCur->nKey = sqlite3BtreePayloadSize(pCur); + pKey = sqlite3Malloc( pCur->nKey ); + if( pKey ){ + rc = sqlite3BtreePayload(pCur, 0, (int)pCur->nKey, pKey); + if( rc==SQLITE_OK ){ + pCur->pKey = pKey; + }else{ + sqlite3_free(pKey); + } + }else{ + rc = SQLITE_NOMEM_BKPT; + } + } + assert( !pCur->curIntKey || !pCur->pKey ); + return rc; +} /* ** Save the current cursor position in the variables BtCursor.nKey @@ -51306,55 +59553,75 @@ static void btreeReleaseAllCursorPages(BtCursor *pCur){ static int saveCursorPosition(BtCursor *pCur){ int rc; - assert( CURSOR_VALID==pCur->eState ); + assert( CURSOR_VALID==pCur->eState || CURSOR_SKIPNEXT==pCur->eState ); assert( 0==pCur->pKey ); assert( cursorHoldsMutex(pCur) ); - rc = sqlite3BtreeKeySize(pCur, &pCur->nKey); - assert( rc==SQLITE_OK ); /* KeySize() cannot fail */ - - /* If this is an intKey table, then the above call to BtreeKeySize() - ** stores the integer key in pCur->nKey. In this case this value is - ** all that is required. Otherwise, if pCur is not open on an intKey - ** table, then malloc space for and store the pCur->nKey bytes of key - ** data. - */ - if( 0==pCur->apPage[0]->intKey ){ - void *pKey = sqlite3Malloc( (int)pCur->nKey ); - if( pKey ){ - rc = sqlite3BtreeKey(pCur, 0, (int)pCur->nKey, pKey); - if( rc==SQLITE_OK ){ - pCur->pKey = pKey; - }else{ - sqlite3_free(pKey); - } - }else{ - rc = SQLITE_NOMEM; - } + if( pCur->eState==CURSOR_SKIPNEXT ){ + pCur->eState = CURSOR_VALID; + }else{ + pCur->skipNext = 0; } - assert( !pCur->apPage[0]->intKey || !pCur->pKey ); + rc = saveCursorKey(pCur); if( rc==SQLITE_OK ){ btreeReleaseAllCursorPages(pCur); pCur->eState = CURSOR_REQUIRESEEK; } - invalidateOverflowCache(pCur); + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl|BTCF_AtLast); return rc; } +/* Forward reference */ +static int SQLITE_NOINLINE saveCursorsOnList(BtCursor*,Pgno,BtCursor*); + /* ** Save the positions of all cursors (except pExcept) that are open on -** the table with root-page iRoot. Usually, this is called just before cursor -** pExcept is used to modify the table (BtreeDelete() or BtreeInsert()). +** the table with root-page iRoot. "Saving the cursor position" means that +** the location in the btree is remembered in such a way that it can be +** moved back to the same spot after the btree has been modified. This +** routine is called just before cursor pExcept is used to modify the +** table, for example in BtreeDelete() or BtreeInsert(). +** +** If there are two or more cursors on the same btree, then all such +** cursors should have their BTCF_Multiple flag set. The btreeCursor() +** routine enforces that rule. This routine only needs to be called in +** the uncommon case when pExpect has the BTCF_Multiple flag set. +** +** If pExpect!=NULL and if no other cursors are found on the same root-page, +** then the BTCF_Multiple flag on pExpect is cleared, to avoid another +** pointless call to this routine. +** +** Implementation note: This routine merely checks to see if any cursors +** need to be saved. It calls out to saveCursorsOnList() in the (unusual) +** event that cursors are in need to being saved. */ static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){ BtCursor *p; assert( sqlite3_mutex_held(pBt->mutex) ); assert( pExcept==0 || pExcept->pBt==pBt ); for(p=pBt->pCursor; p; p=p->pNext){ + if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) ) break; + } + if( p ) return saveCursorsOnList(p, iRoot, pExcept); + if( pExcept ) pExcept->curFlags &= ~BTCF_Multiple; + return SQLITE_OK; +} + +/* This helper routine to saveAllCursors does the actual work of saving +** the cursors if and when a cursor is found that actually requires saving. +** The common case is that no cursors need to be saved, so this routine is +** broken out from its caller to avoid unnecessary stack pointer movement. +*/ +static int SQLITE_NOINLINE saveCursorsOnList( + BtCursor *p, /* The first cursor that needs saving */ + Pgno iRoot, /* Only save cursor with this iRoot. Save all if zero */ + BtCursor *pExcept /* Do not save this cursor */ +){ + do{ if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) ){ - if( p->eState==CURSOR_VALID ){ + if( p->eState==CURSOR_VALID || p->eState==CURSOR_SKIPNEXT ){ int rc = saveCursorPosition(p); if( SQLITE_OK!=rc ){ return rc; @@ -51364,7 +59631,8 @@ static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){ btreeReleaseAllCursorPages(p); } } - } + p = p->pNext; + }while( p ); return SQLITE_OK; } @@ -51392,26 +59660,23 @@ static int btreeMoveto( ){ int rc; /* Status code */ UnpackedRecord *pIdxKey; /* Unpacked index key */ - char aSpace[200]; /* Temp space for pIdxKey - to avoid a malloc */ - char *pFree = 0; if( pKey ){ assert( nKey==(i64)(int)nKey ); - pIdxKey = sqlite3VdbeAllocUnpackedRecord( - pCur->pKeyInfo, aSpace, sizeof(aSpace), &pFree - ); - if( pIdxKey==0 ) return SQLITE_NOMEM; + pIdxKey = sqlite3VdbeAllocUnpackedRecord(pCur->pKeyInfo); + if( pIdxKey==0 ) return SQLITE_NOMEM_BKPT; sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey); if( pIdxKey->nField==0 ){ - sqlite3DbFree(pCur->pKeyInfo->db, pFree); - return SQLITE_CORRUPT_BKPT; + rc = SQLITE_CORRUPT_BKPT; + goto moveto_done; } }else{ pIdxKey = 0; } rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes); - if( pFree ){ - sqlite3DbFree(pCur->pKeyInfo->db, pFree); +moveto_done: + if( pIdxKey ){ + sqlite3DbFree(pCur->pKeyInfo->db, pIdxKey); } return rc; } @@ -51425,17 +59690,19 @@ static int btreeMoveto( */ static int btreeRestoreCursorPosition(BtCursor *pCur){ int rc; - assert( cursorHoldsMutex(pCur) ); + int skipNext; + assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState>=CURSOR_REQUIRESEEK ); if( pCur->eState==CURSOR_FAULT ){ return pCur->skipNext; } pCur->eState = CURSOR_INVALID; - rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &pCur->skipNext); + rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &skipNext); if( rc==SQLITE_OK ){ sqlite3_free(pCur->pKey); pCur->pKey = 0; assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_INVALID ); + pCur->skipNext |= skipNext; if( pCur->skipNext && pCur->eState==CURSOR_VALID ){ pCur->eState = CURSOR_SKIPNEXT; } @@ -51449,29 +59716,73 @@ static int btreeRestoreCursorPosition(BtCursor *pCur){ SQLITE_OK) /* -** Determine whether or not a cursor has moved from the position it -** was last placed at. Cursors can move when the row they are pointing -** at is deleted out from under them. +** Determine whether or not a cursor has moved from the position where +** it was last placed, or has been invalidated for any other reason. +** Cursors can move when the row they are pointing at is deleted out +** from under them, for example. Cursor might also move if a btree +** is rebalanced. ** -** This routine returns an error code if something goes wrong. The -** integer *pHasMoved is set to one if the cursor has moved and 0 if not. +** Calling this routine with a NULL cursor pointer returns false. +** +** Use the separate sqlite3BtreeCursorRestore() routine to restore a cursor +** back to where it ought to be if this routine returns true. */ -SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor *pCur, int *pHasMoved){ +SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor *pCur){ + return pCur->eState!=CURSOR_VALID; +} + +/* +** This routine restores a cursor back to its original position after it +** has been moved by some outside activity (such as a btree rebalance or +** a row having been deleted out from under the cursor). +** +** On success, the *pDifferentRow parameter is false if the cursor is left +** pointing at exactly the same row. *pDifferntRow is the row the cursor +** was pointing to has been deleted, forcing the cursor to point to some +** nearby row. +** +** This routine should only be called for a cursor that just returned +** TRUE from sqlite3BtreeCursorHasMoved(). +*/ +SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor *pCur, int *pDifferentRow){ int rc; + assert( pCur!=0 ); + assert( pCur->eState!=CURSOR_VALID ); rc = restoreCursorPosition(pCur); if( rc ){ - *pHasMoved = 1; + *pDifferentRow = 1; return rc; } - if( pCur->eState!=CURSOR_VALID || NEVER(pCur->skipNext!=0) ){ - *pHasMoved = 1; + if( pCur->eState!=CURSOR_VALID ){ + *pDifferentRow = 1; }else{ - *pHasMoved = 0; + assert( pCur->skipNext==0 ); + *pDifferentRow = 0; } return SQLITE_OK; } +#ifdef SQLITE_ENABLE_CURSOR_HINTS +/* +** Provide hints to the cursor. The particular hint given (and the type +** and number of the varargs parameters) is determined by the eHintType +** parameter. See the definitions of the BTREE_HINT_* macros for details. +*/ +SQLITE_PRIVATE void sqlite3BtreeCursorHint(BtCursor *pCur, int eHintType, ...){ + /* Used only by system that substitute their own storage engine */ +} +#endif + +/* +** Provide flag hints to the cursor. +*/ +SQLITE_PRIVATE void sqlite3BtreeCursorHintFlags(BtCursor *pCur, unsigned x){ + assert( x==BTREE_SEEK_EQ || x==BTREE_BULKLOAD || x==0 ); + pCur->hints = x; +} + + #ifndef SQLITE_OMIT_AUTOVACUUM /* ** Given a page number of a regular database page, return the page @@ -51525,7 +59836,7 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){ return; } iPtrmap = PTRMAP_PAGENO(pBt, key); - rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); + rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage, 0); if( rc!=SQLITE_OK ){ *pRC = rc; return; @@ -51568,7 +59879,7 @@ static int ptrmapGet(BtShared *pBt, Pgno key, u8 *pEType, Pgno *pPgno){ assert( sqlite3_mutex_held(pBt->mutex) ); iPtrmap = PTRMAP_PAGENO(pBt, key); - rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); + rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage, 0); if( rc!=0 ){ return rc; } @@ -51600,128 +59911,214 @@ static int ptrmapGet(BtShared *pBt, Pgno key, u8 *pEType, Pgno *pPgno){ ** the page, 1 means the second cell, and so forth) return a pointer ** to the cell content. ** +** findCellPastPtr() does the same except it skips past the initial +** 4-byte child pointer found on interior pages, if there is one. +** ** This routine works only for pages that do not contain overflow cells. */ #define findCell(P,I) \ - ((P)->aData + ((P)->maskPage & get2byte(&(P)->aCellIdx[2*(I)]))) -#define findCellv2(D,M,O,I) (D+(M&get2byte(D+(O+2*(I))))) + ((P)->aData + ((P)->maskPage & get2byteAligned(&(P)->aCellIdx[2*(I)]))) +#define findCellPastPtr(P,I) \ + ((P)->aDataOfst + ((P)->maskPage & get2byteAligned(&(P)->aCellIdx[2*(I)]))) /* -** This a more complex version of findCell() that works for -** pages that do contain overflow cells. +** This is common tail processing for btreeParseCellPtr() and +** btreeParseCellPtrIndex() for the case when the cell does not fit entirely +** on a single B-tree page. Make necessary adjustments to the CellInfo +** structure. */ -static u8 *findOverflowCell(MemPage *pPage, int iCell){ - int i; - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - for(i=pPage->nOverflow-1; i>=0; i--){ - int k; - k = pPage->aiOvfl[i]; - if( k<=iCell ){ - if( k==iCell ){ - return pPage->apOvfl[i]; - } - iCell--; - } +static SQLITE_NOINLINE void btreeParseCellAdjustSizeForOverflow( + MemPage *pPage, /* Page containing the cell */ + u8 *pCell, /* Pointer to the cell text. */ + CellInfo *pInfo /* Fill in this structure */ +){ + /* If the payload will not fit completely on the local page, we have + ** to decide how much to store locally and how much to spill onto + ** overflow pages. The strategy is to minimize the amount of unused + ** space on overflow pages while keeping the amount of local storage + ** in between minLocal and maxLocal. + ** + ** Warning: changing the way overflow payload is distributed in any + ** way will result in an incompatible file format. + */ + int minLocal; /* Minimum amount of payload held locally */ + int maxLocal; /* Maximum amount of payload held locally */ + int surplus; /* Overflow payload available for local storage */ + + minLocal = pPage->minLocal; + maxLocal = pPage->maxLocal; + surplus = minLocal + (pInfo->nPayload - minLocal)%(pPage->pBt->usableSize-4); + testcase( surplus==maxLocal ); + testcase( surplus==maxLocal+1 ); + if( surplus <= maxLocal ){ + pInfo->nLocal = (u16)surplus; + }else{ + pInfo->nLocal = (u16)minLocal; } - return findCell(pPage, iCell); + pInfo->nSize = (u16)(&pInfo->pPayload[pInfo->nLocal] - pCell) + 4; } /* -** Parse a cell content block and fill in the CellInfo structure. There -** are two versions of this function. btreeParseCell() takes a -** cell index as the second argument and btreeParseCellPtr() -** takes a pointer to the body of the cell as its second argument. +** The following routines are implementations of the MemPage.xParseCell() +** method. ** -** Within this file, the parseCell() macro can be called instead of -** btreeParseCellPtr(). Using some compilers, this will be faster. +** Parse a cell content block and fill in the CellInfo structure. +** +** btreeParseCellPtr() => table btree leaf nodes +** btreeParseCellNoPayload() => table btree internal nodes +** btreeParseCellPtrIndex() => index btree nodes +** +** There is also a wrapper function btreeParseCell() that works for +** all MemPage types and that references the cell by index rather than +** by pointer. */ +static void btreeParseCellPtrNoPayload( + MemPage *pPage, /* Page containing the cell */ + u8 *pCell, /* Pointer to the cell text. */ + CellInfo *pInfo /* Fill in this structure */ +){ + assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + assert( pPage->leaf==0 ); + assert( pPage->childPtrSize==4 ); +#ifndef SQLITE_DEBUG + UNUSED_PARAMETER(pPage); +#endif + pInfo->nSize = 4 + getVarint(&pCell[4], (u64*)&pInfo->nKey); + pInfo->nPayload = 0; + pInfo->nLocal = 0; + pInfo->pPayload = 0; + return; +} static void btreeParseCellPtr( MemPage *pPage, /* Page containing the cell */ u8 *pCell, /* Pointer to the cell text. */ CellInfo *pInfo /* Fill in this structure */ ){ - u16 n; /* Number bytes in cell content header */ + u8 *pIter; /* For scanning through pCell */ u32 nPayload; /* Number of bytes of cell payload */ + u64 iKey; /* Extracted Key value */ assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - - pInfo->pCell = pCell; assert( pPage->leaf==0 || pPage->leaf==1 ); - n = pPage->childPtrSize; - assert( n==4-4*pPage->leaf ); - if( pPage->intKey ){ - if( pPage->hasData ){ - assert( n==0 ); - n = getVarint32(pCell, nPayload); - }else{ - nPayload = 0; - } - n += getVarint(&pCell[n], (u64*)&pInfo->nKey); - pInfo->nData = nPayload; - }else{ - pInfo->nData = 0; - n += getVarint32(&pCell[n], nPayload); - pInfo->nKey = nPayload; + assert( pPage->intKeyLeaf ); + assert( pPage->childPtrSize==0 ); + pIter = pCell; + + /* The next block of code is equivalent to: + ** + ** pIter += getVarint32(pIter, nPayload); + ** + ** The code is inlined to avoid a function call. + */ + nPayload = *pIter; + if( nPayload>=0x80 ){ + u8 *pEnd = &pIter[8]; + nPayload &= 0x7f; + do{ + nPayload = (nPayload<<7) | (*++pIter & 0x7f); + }while( (*pIter)>=0x80 && pIternKey); + ** + ** The code is inlined to avoid a function call. + */ + iKey = *pIter; + if( iKey>=0x80 ){ + u8 *pEnd = &pIter[7]; + iKey &= 0x7f; + while(1){ + iKey = (iKey<<7) | (*++pIter & 0x7f); + if( (*pIter)<0x80 ) break; + if( pIter>=pEnd ){ + iKey = (iKey<<8) | *++pIter; + break; + } + } + } + pIter++; + + pInfo->nKey = *(i64*)&iKey; pInfo->nPayload = nPayload; - pInfo->nHeader = n; + pInfo->pPayload = pIter; testcase( nPayload==pPage->maxLocal ); testcase( nPayload==pPage->maxLocal+1 ); - if( likely(nPayload<=pPage->maxLocal) ){ + if( nPayload<=pPage->maxLocal ){ /* This is the (easy) common case where the entire payload fits ** on the local page. No overflow is required. */ - if( (pInfo->nSize = (u16)(n+nPayload))<4 ) pInfo->nSize = 4; + pInfo->nSize = nPayload + (u16)(pIter - pCell); + if( pInfo->nSize<4 ) pInfo->nSize = 4; pInfo->nLocal = (u16)nPayload; - pInfo->iOverflow = 0; }else{ - /* If the payload will not fit completely on the local page, we have - ** to decide how much to store locally and how much to spill onto - ** overflow pages. The strategy is to minimize the amount of unused - ** space on overflow pages while keeping the amount of local storage - ** in between minLocal and maxLocal. - ** - ** Warning: changing the way overflow payload is distributed in any - ** way will result in an incompatible file format. - */ - int minLocal; /* Minimum amount of payload held locally */ - int maxLocal; /* Maximum amount of payload held locally */ - int surplus; /* Overflow payload available for local storage */ - - minLocal = pPage->minLocal; - maxLocal = pPage->maxLocal; - surplus = minLocal + (nPayload - minLocal)%(pPage->pBt->usableSize - 4); - testcase( surplus==maxLocal ); - testcase( surplus==maxLocal+1 ); - if( surplus <= maxLocal ){ - pInfo->nLocal = (u16)surplus; - }else{ - pInfo->nLocal = (u16)minLocal; - } - pInfo->iOverflow = (u16)(pInfo->nLocal + n); - pInfo->nSize = pInfo->iOverflow + 4; + btreeParseCellAdjustSizeForOverflow(pPage, pCell, pInfo); + } +} +static void btreeParseCellPtrIndex( + MemPage *pPage, /* Page containing the cell */ + u8 *pCell, /* Pointer to the cell text. */ + CellInfo *pInfo /* Fill in this structure */ +){ + u8 *pIter; /* For scanning through pCell */ + u32 nPayload; /* Number of bytes of cell payload */ + + assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + assert( pPage->leaf==0 || pPage->leaf==1 ); + assert( pPage->intKeyLeaf==0 ); + pIter = pCell + pPage->childPtrSize; + nPayload = *pIter; + if( nPayload>=0x80 ){ + u8 *pEnd = &pIter[8]; + nPayload &= 0x7f; + do{ + nPayload = (nPayload<<7) | (*++pIter & 0x7f); + }while( *(pIter)>=0x80 && pIternKey = nPayload; + pInfo->nPayload = nPayload; + pInfo->pPayload = pIter; + testcase( nPayload==pPage->maxLocal ); + testcase( nPayload==pPage->maxLocal+1 ); + if( nPayload<=pPage->maxLocal ){ + /* This is the (easy) common case where the entire payload fits + ** on the local page. No overflow is required. + */ + pInfo->nSize = nPayload + (u16)(pIter - pCell); + if( pInfo->nSize<4 ) pInfo->nSize = 4; + pInfo->nLocal = (u16)nPayload; + }else{ + btreeParseCellAdjustSizeForOverflow(pPage, pCell, pInfo); } } -#define parseCell(pPage, iCell, pInfo) \ - btreeParseCellPtr((pPage), findCell((pPage), (iCell)), (pInfo)) static void btreeParseCell( MemPage *pPage, /* Page containing the cell */ int iCell, /* The cell index. First cell is 0 */ CellInfo *pInfo /* Fill in this structure */ ){ - parseCell(pPage, iCell, pInfo); + pPage->xParseCell(pPage, findCell(pPage, iCell), pInfo); } /* +** The following routines are implementations of the MemPage.xCellSize +** method. +** ** Compute the total number of bytes that a Cell needs in the cell ** data area of the btree-page. The return number includes the cell ** data header and the local payload, but not any overflow page or ** the space used by the cell pointer. +** +** cellSizePtrNoPayload() => table internal nodes +** cellSizePtr() => all index nodes & table leaf nodes */ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ - u8 *pIter = &pCell[pPage->childPtrSize]; - u32 nSize; + u8 *pIter = pCell + pPage->childPtrSize; /* For looping over bytes of pCell */ + u8 *pEnd; /* End mark for a varint */ + u32 nSize; /* Size value to return */ #ifdef SQLITE_DEBUG /* The value returned by this function should always be the same as @@ -51729,29 +60126,31 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of ** this function verifies that this invariant is not violated. */ CellInfo debuginfo; - btreeParseCellPtr(pPage, pCell, &debuginfo); + pPage->xParseCell(pPage, pCell, &debuginfo); #endif + nSize = *pIter; + if( nSize>=0x80 ){ + pEnd = &pIter[8]; + nSize &= 0x7f; + do{ + nSize = (nSize<<7) | (*++pIter & 0x7f); + }while( *(pIter)>=0x80 && pIterintKey ){ - u8 *pEnd; - if( pPage->hasData ){ - pIter += getVarint32(pIter, nSize); - }else{ - nSize = 0; - } - /* pIter now points at the 64-bit integer key value, a variable length ** integer. The following block moves pIter to point at the first byte ** past the end of the key value. */ pEnd = &pIter[9]; while( (*pIter++)&0x80 && pItermaxLocal ); testcase( nSize==pPage->maxLocal+1 ); - if( nSize>pPage->maxLocal ){ + if( nSize<=pPage->maxLocal ){ + nSize += (u32)(pIter - pCell); + if( nSize<4 ) nSize = 4; + }else{ int minLocal = pPage->minLocal; nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4); testcase( nSize==pPage->maxLocal ); @@ -51759,24 +60158,39 @@ static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ if( nSize>pPage->maxLocal ){ nSize = minLocal; } - nSize += 4; + nSize += 4 + (u16)(pIter - pCell); } - nSize += (u32)(pIter - pCell); - - /* The minimum size of any cell is 4 bytes. */ - if( nSize<4 ){ - nSize = 4; - } - - assert( nSize==debuginfo.nSize ); + assert( nSize==debuginfo.nSize || CORRUPT_DB ); return (u16)nSize; } +static u16 cellSizePtrNoPayload(MemPage *pPage, u8 *pCell){ + u8 *pIter = pCell + 4; /* For looping over bytes of pCell */ + u8 *pEnd; /* End mark for a varint */ + +#ifdef SQLITE_DEBUG + /* The value returned by this function should always be the same as + ** the (CellInfo.nSize) value found by doing a full parse of the + ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of + ** this function verifies that this invariant is not violated. */ + CellInfo debuginfo; + pPage->xParseCell(pPage, pCell, &debuginfo); +#else + UNUSED_PARAMETER(pPage); +#endif + + assert( pPage->childPtrSize==4 ); + pEnd = pIter + 9; + while( (*pIter++)&0x80 && pIterxCellSize(pPage, findCell(pPage, iCell)); } #endif @@ -51790,10 +60204,9 @@ static void ptrmapPutOvflPtr(MemPage *pPage, u8 *pCell, int *pRC){ CellInfo info; if( *pRC ) return; assert( pCell!=0 ); - btreeParseCellPtr(pPage, pCell, &info); - assert( (info.nData+(pPage->intKey?0:info.nKey))==info.nPayload ); - if( info.iOverflow ){ - Pgno ovfl = get4byte(&pCell[info.iOverflow]); + pPage->xParseCell(pPage, pCell, &info); + if( info.nLocalpBt, ovfl, PTRMAP_OVERFLOW1, pPage->pgno, pRC); } } @@ -51805,10 +60218,15 @@ static void ptrmapPutOvflPtr(MemPage *pPage, u8 *pCell, int *pRC){ ** end of the page and all free space is collected into one ** big FreeBlk that occurs in between the header and cell ** pointer array and the cell content area. +** +** EVIDENCE-OF: R-44582-60138 SQLite may from time to time reorganize a +** b-tree page so that there are no freeblocks or fragment bytes, all +** unused bytes are contained in the unallocated space region, and all +** cells are packed tightly at the end of the page. */ static int defragmentPage(MemPage *pPage){ int i; /* Loop counter */ - int pc; /* Address of a i-th cell */ + int pc; /* Address of the i-th cell */ int hdr; /* Offset to the page header */ int size; /* Size of a cell */ int usableSize; /* Number of usable bytes on a page */ @@ -51817,6 +60235,7 @@ static int defragmentPage(MemPage *pPage){ int nCell; /* Number of cells on the page */ unsigned char *data; /* The page data */ unsigned char *temp; /* Temp area for cell content */ + unsigned char *src; /* Source of content */ int iCellFirst; /* First allowable cell index */ int iCellLast; /* Last possible cell index */ @@ -51826,15 +60245,13 @@ static int defragmentPage(MemPage *pPage){ assert( pPage->pBt->usableSize <= SQLITE_MAX_PAGE_SIZE ); assert( pPage->nOverflow==0 ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - temp = sqlite3PagerTempSpace(pPage->pBt->pPager); - data = pPage->aData; + temp = 0; + src = data = pPage->aData; hdr = pPage->hdrOffset; cellOffset = pPage->cellOffset; nCell = pPage->nCell; assert( nCell==get2byte(&data[hdr+3]) ); usableSize = pPage->pBt->usableSize; - cbrk = get2byte(&data[hdr+5]); - memcpy(&temp[cbrk], &data[cbrk], usableSize - cbrk); cbrk = usableSize; iCellFirst = cellOffset + 2*nCell; iCellLast = usableSize - 4; @@ -51844,31 +60261,31 @@ static int defragmentPage(MemPage *pPage){ pc = get2byte(pAddr); testcase( pc==iCellFirst ); testcase( pc==iCellLast ); -#if !defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) /* These conditions have already been verified in btreeInitPage() - ** if SQLITE_ENABLE_OVERSIZE_CELL_CHECK is defined + ** if PRAGMA cell_size_check=ON. */ if( pciCellLast ){ return SQLITE_CORRUPT_BKPT; } -#endif assert( pc>=iCellFirst && pc<=iCellLast ); - size = cellSizePtr(pPage, &temp[pc]); + size = pPage->xCellSize(pPage, &src[pc]); cbrk -= size; -#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) - if( cbrkusableSize ){ return SQLITE_CORRUPT_BKPT; } -#endif assert( cbrk+size<=usableSize && cbrk>=iCellFirst ); testcase( cbrk+size==usableSize ); testcase( pc+size==usableSize ); - memcpy(&data[cbrk], &temp[pc], size); put2byte(pAddr, cbrk); + if( temp==0 ){ + int x; + if( cbrk==pc ) continue; + temp = sqlite3PagerTempSpace(pPage->pBt->pPager); + x = get2byte(&data[hdr+5]); + memcpy(&temp[x], &data[x], (cbrk+size) - x); + src = temp; + } + memcpy(&data[cbrk], &src[pc], size); } assert( cbrk>=iCellFirst ); put2byte(&data[hdr+5], cbrk); @@ -51883,6 +60300,70 @@ static int defragmentPage(MemPage *pPage){ return SQLITE_OK; } +/* +** Search the free-list on page pPg for space to store a cell nByte bytes in +** size. If one can be found, return a pointer to the space and remove it +** from the free-list. +** +** If no suitable space can be found on the free-list, return NULL. +** +** This function may detect corruption within pPg. If corruption is +** detected then *pRc is set to SQLITE_CORRUPT and NULL is returned. +** +** Slots on the free list that are between 1 and 3 bytes larger than nByte +** will be ignored if adding the extra space to the fragmentation count +** causes the fragmentation count to exceed 60. +*/ +static u8 *pageFindSlot(MemPage *pPg, int nByte, int *pRc){ + const int hdr = pPg->hdrOffset; + u8 * const aData = pPg->aData; + int iAddr = hdr + 1; + int pc = get2byte(&aData[iAddr]); + int x; + int usableSize = pPg->pBt->usableSize; + + assert( pc>0 ); + do{ + int size; /* Size of the free slot */ + /* EVIDENCE-OF: R-06866-39125 Freeblocks are always connected in order of + ** increasing offset. */ + if( pc>usableSize-4 || pc=0 ){ + testcase( x==4 ); + testcase( x==3 ); + if( pc < pPg->cellOffset+2*pPg->nCell || size+pc > usableSize ){ + *pRc = SQLITE_CORRUPT_BKPT; + return 0; + }else if( x<4 ){ + /* EVIDENCE-OF: R-11498-58022 In a well-formed b-tree page, the total + ** number of bytes in fragments may not exceed 60. */ + if( aData[hdr+7]>57 ) return 0; + + /* Remove the slot from the free-list. Update the number of + ** fragmented bytes within the page. */ + memcpy(&aData[iAddr], &aData[pc], 2); + aData[hdr+7] += (u8)x; + }else{ + /* The slot remains on the free-list. Reduce its size to account + ** for the portion used by the new allocation. */ + put2byte(&aData[pc+2], x); + } + return &aData[pc + x]; + } + iAddr = pc; + pc = get2byte(&aData[pc]); + }while( pc ); + + return 0; +} + /* ** Allocate nByte bytes of space from within the B-Tree page passed ** as the first argument. Write into *pIdx the index into pPage->aData[] @@ -51899,11 +60380,9 @@ static int defragmentPage(MemPage *pPage){ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ const int hdr = pPage->hdrOffset; /* Local cache of pPage->hdrOffset */ u8 * const data = pPage->aData; /* Local cache of pPage->aData */ - int nFrag; /* Number of fragmented bytes on pPage */ int top; /* First byte of cell content area */ + int rc = SQLITE_OK; /* Integer return code */ int gap; /* First byte of gap between cell pointers and cell content */ - int rc; /* Integer return code */ - int usableSize; /* Usable size of the page */ assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( pPage->pBt ); @@ -51911,62 +60390,50 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ assert( nByte>=0 ); /* Minimum cell size is 4 */ assert( pPage->nFree>=nByte ); assert( pPage->nOverflow==0 ); - usableSize = pPage->pBt->usableSize; - assert( nByte < usableSize-8 ); + assert( nByte < (int)(pPage->pBt->usableSize-8) ); - nFrag = data[hdr+7]; assert( pPage->cellOffset == hdr + 12 - 4*pPage->leaf ); gap = pPage->cellOffset + 2*pPage->nCell; - top = get2byteNotZero(&data[hdr+5]); - if( gap>top ) return SQLITE_CORRUPT_BKPT; - testcase( gap+2==top ); - testcase( gap+1==top ); - testcase( gap==top ); - - if( nFrag>=60 ){ - /* Always defragment highly fragmented pages */ - rc = defragmentPage(pPage); - if( rc ) return rc; - top = get2byteNotZero(&data[hdr+5]); - }else if( gap+2<=top ){ - /* Search the freelist looking for a free slot big enough to satisfy - ** the request. The allocation is made from the first free slot in - ** the list that is large enough to accommodate it. - */ - int pc, addr; - for(addr=hdr+1; (pc = get2byte(&data[addr]))>0; addr=pc){ - int size; /* Size of the free slot */ - if( pc>usableSize-4 || pc=nByte ){ - int x = size - nByte; - testcase( x==4 ); - testcase( x==3 ); - if( x<4 ){ - /* Remove the slot from the free-list. Update the number of - ** fragmented bytes within the page. */ - memcpy(&data[addr], &data[pc], 2); - data[hdr+7] = (u8)(nFrag + x); - }else if( size+pc > usableSize ){ - return SQLITE_CORRUPT_BKPT; - }else{ - /* The slot remains on the free-list. Reduce its size to account - ** for the portion used by the new allocation. */ - put2byte(&data[pc+2], x); - } - *pIdx = pc + x; - return SQLITE_OK; - } + assert( gap<=65536 ); + /* EVIDENCE-OF: R-29356-02391 If the database uses a 65536-byte page size + ** and the reserved space is zero (the usual value for reserved space) + ** then the cell content offset of an empty page wants to be 65536. + ** However, that integer is too large to be stored in a 2-byte unsigned + ** integer, so a value of 0 is used in its place. */ + top = get2byte(&data[hdr+5]); + assert( top<=(int)pPage->pBt->usableSize ); /* Prevent by getAndInitPage() */ + if( gap>top ){ + if( top==0 && pPage->pBt->usableSize==65536 ){ + top = 65536; + }else{ + return SQLITE_CORRUPT_BKPT; } } - /* Check to make sure there is enough space in the gap to satisfy - ** the allocation. If not, defragment. + /* If there is enough space between gap and top for one more cell pointer + ** array entry offset, and if the freelist is not empty, then search the + ** freelist looking for a free slot big enough to satisfy the request. + */ + testcase( gap+2==top ); + testcase( gap+1==top ); + testcase( gap==top ); + if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){ + u8 *pSpace = pageFindSlot(pPage, nByte, &rc); + if( pSpace ){ + assert( pSpace>=data && (pSpace - data)<65536 ); + *pIdx = (int)(pSpace - data); + return SQLITE_OK; + }else if( rc ){ + return rc; + } + } + + /* The request could not be fulfilled using a freelist slot. Check + ** to see if defragmentation is necessary. */ testcase( gap+2+nByte==top ); if( gap+2+nByte>top ){ + assert( pPage->nCell>0 || CORRUPT_DB ); rc = defragmentPage(pPage); if( rc ) return rc; top = get2byteNotZero(&data[hdr+5]); @@ -51989,90 +60456,104 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ /* ** Return a section of the pPage->aData to the freelist. -** The first byte of the new free block is pPage->aDisk[start] -** and the size of the block is "size" bytes. +** The first byte of the new free block is pPage->aData[iStart] +** and the size of the block is iSize bytes. ** -** Most of the effort here is involved in coalesing adjacent -** free blocks into a single big free block. +** Adjacent freeblocks are coalesced. +** +** Note that even though the freeblock list was checked by btreeInitPage(), +** that routine will not detect overlap between cells or freeblocks. Nor +** does it detect cells or freeblocks that encrouch into the reserved bytes +** at the end of the page. So do additional corruption checks inside this +** routine and return SQLITE_CORRUPT if any problems are found. */ -static int freeSpace(MemPage *pPage, int start, int size){ - int addr, pbegin, hdr; - int iLast; /* Largest possible freeblock offset */ - unsigned char *data = pPage->aData; +static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){ + u16 iPtr; /* Address of ptr to next freeblock */ + u16 iFreeBlk; /* Address of the next freeblock */ + u8 hdr; /* Page header size. 0 or 100 */ + u8 nFrag = 0; /* Reduction in fragmentation */ + u16 iOrigSize = iSize; /* Original value of iSize */ + u32 iLast = pPage->pBt->usableSize-4; /* Largest possible freeblock offset */ + u32 iEnd = iStart + iSize; /* First byte past the iStart buffer */ + unsigned char *data = pPage->aData; /* Page content */ assert( pPage->pBt!=0 ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( start>=pPage->hdrOffset+6+pPage->childPtrSize ); - assert( (start + size) <= (int)pPage->pBt->usableSize ); + assert( CORRUPT_DB || iStart>=pPage->hdrOffset+6+pPage->childPtrSize ); + assert( CORRUPT_DB || iEnd <= pPage->pBt->usableSize ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( size>=0 ); /* Minimum cell size is 4 */ + assert( iSize>=4 ); /* Minimum cell size is 4 */ + assert( iStart<=iLast ); + /* Overwrite deleted information with zeros when the secure_delete + ** option is enabled */ if( pPage->pBt->btsFlags & BTS_SECURE_DELETE ){ - /* Overwrite deleted information with zeros when the secure_delete - ** option is enabled */ - memset(&data[start], 0, size); + memset(&data[iStart], 0, iSize); } - /* Add the space back into the linked list of freeblocks. Note that - ** even though the freeblock list was checked by btreeInitPage(), - ** btreeInitPage() did not detect overlapping cells or - ** freeblocks that overlapped cells. Nor does it detect when the - ** cell content area exceeds the value in the page header. If these - ** situations arise, then subsequent insert operations might corrupt - ** the freelist. So we do need to check for corruption while scanning - ** the freelist. + /* The list of freeblocks must be in ascending order. Find the + ** spot on the list where iStart should be inserted. */ hdr = pPage->hdrOffset; - addr = hdr + 1; - iLast = pPage->pBt->usableSize - 4; - assert( start<=iLast ); - while( (pbegin = get2byte(&data[addr]))0 ){ - if( pbeginiLast ){ - return SQLITE_CORRUPT_BKPT; - } - assert( pbegin>addr || pbegin==0 ); - put2byte(&data[addr], start); - put2byte(&data[start], pbegin); - put2byte(&data[start+2], size); - pPage->nFree = pPage->nFree + (u16)size; - - /* Coalesce adjacent free blocks */ - addr = hdr + 1; - while( (pbegin = get2byte(&data[addr]))>0 ){ - int pnext, psize, x; - assert( pbegin>addr ); - assert( pbegin <= (int)pPage->pBt->usableSize-4 ); - pnext = get2byte(&data[pbegin]); - psize = get2byte(&data[pbegin+2]); - if( pbegin + psize + 3 >= pnext && pnext>0 ){ - int frag = pnext - (pbegin+psize); - if( (frag<0) || (frag>(int)data[hdr+7]) ){ + iPtr = hdr + 1; + if( data[iPtr+1]==0 && data[iPtr]==0 ){ + iFreeBlk = 0; /* Shortcut for the case when the freelist is empty */ + }else{ + while( (iFreeBlk = get2byte(&data[iPtr]))iLast ) return SQLITE_CORRUPT_BKPT; + assert( iFreeBlk>iPtr || iFreeBlk==0 ); + + /* At this point: + ** iFreeBlk: First freeblock after iStart, or zero if none + ** iPtr: The address of a pointer to iFreeBlk + ** + ** Check to see if iFreeBlk should be coalesced onto the end of iStart. + */ + if( iFreeBlk && iEnd+3>=iFreeBlk ){ + nFrag = iFreeBlk - iEnd; + if( iEnd>iFreeBlk ) return SQLITE_CORRUPT_BKPT; + iEnd = iFreeBlk + get2byte(&data[iFreeBlk+2]); + if( iEnd > pPage->pBt->usableSize ) return SQLITE_CORRUPT_BKPT; + iSize = iEnd - iStart; + iFreeBlk = get2byte(&data[iFreeBlk]); + } + + /* If iPtr is another freeblock (that is, if iPtr is not the freelist + ** pointer in the page header) then check to see if iStart should be + ** coalesced onto the end of iPtr. + */ + if( iPtr>hdr+1 ){ + int iPtrEnd = iPtr + get2byte(&data[iPtr+2]); + if( iPtrEnd+3>=iStart ){ + if( iPtrEnd>iStart ) return SQLITE_CORRUPT_BKPT; + nFrag += iStart - iPtrEnd; + iSize = iEnd - iPtr; + iStart = iPtr; + } + } + if( nFrag>data[hdr+7] ) return SQLITE_CORRUPT_BKPT; + data[hdr+7] -= nFrag; } - - /* If the cell content area begins with a freeblock, remove it. */ - if( data[hdr+1]==data[hdr+5] && data[hdr+2]==data[hdr+6] ){ - int top; - pbegin = get2byte(&data[hdr+1]); - memcpy(&data[hdr+1], &data[pbegin], 2); - top = get2byte(&data[hdr+5]) + get2byte(&data[pbegin+2]); - put2byte(&data[hdr+5], top); + if( iStart==get2byte(&data[hdr+5]) ){ + /* The new freeblock is at the beginning of the cell content area, + ** so just extend the cell content area rather than create another + ** freelist entry */ + if( iPtr!=hdr+1 ) return SQLITE_CORRUPT_BKPT; + put2byte(&data[hdr+1], iFreeBlk); + put2byte(&data[hdr+5], iEnd); + }else{ + /* Insert the new freeblock into the freelist */ + put2byte(&data[iPtr], iStart); + put2byte(&data[iStart], iFreeBlk); + put2byte(&data[iStart+2], iSize); } - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); + pPage->nFree += iOrigSize; return SQLITE_OK; } @@ -52096,18 +60577,41 @@ static int decodeFlags(MemPage *pPage, int flagByte){ pPage->leaf = (u8)(flagByte>>3); assert( PTF_LEAF == 1<<3 ); flagByte &= ~PTF_LEAF; pPage->childPtrSize = 4-4*pPage->leaf; + pPage->xCellSize = cellSizePtr; pBt = pPage->pBt; if( flagByte==(PTF_LEAFDATA | PTF_INTKEY) ){ + /* EVIDENCE-OF: R-07291-35328 A value of 5 (0x05) means the page is an + ** interior table b-tree page. */ + assert( (PTF_LEAFDATA|PTF_INTKEY)==5 ); + /* EVIDENCE-OF: R-26900-09176 A value of 13 (0x0d) means the page is a + ** leaf table b-tree page. */ + assert( (PTF_LEAFDATA|PTF_INTKEY|PTF_LEAF)==13 ); pPage->intKey = 1; - pPage->hasData = pPage->leaf; + if( pPage->leaf ){ + pPage->intKeyLeaf = 1; + pPage->xParseCell = btreeParseCellPtr; + }else{ + pPage->intKeyLeaf = 0; + pPage->xCellSize = cellSizePtrNoPayload; + pPage->xParseCell = btreeParseCellPtrNoPayload; + } pPage->maxLocal = pBt->maxLeaf; pPage->minLocal = pBt->minLeaf; }else if( flagByte==PTF_ZERODATA ){ + /* EVIDENCE-OF: R-43316-37308 A value of 2 (0x02) means the page is an + ** interior index b-tree page. */ + assert( (PTF_ZERODATA)==2 ); + /* EVIDENCE-OF: R-59615-42828 A value of 10 (0x0a) means the page is a + ** leaf index b-tree page. */ + assert( (PTF_ZERODATA|PTF_LEAF)==10 ); pPage->intKey = 0; - pPage->hasData = 0; + pPage->intKeyLeaf = 0; + pPage->xParseCell = btreeParseCellPtrIndex; pPage->maxLocal = pBt->maxLocal; pPage->minLocal = pBt->minLocal; }else{ + /* EVIDENCE-OF: R-47608-56469 Any other value for the b-tree page type is + ** an error. */ return SQLITE_CORRUPT_BKPT; } pPage->max1bytePayload = pBt->max1bytePayload; @@ -52126,13 +60630,14 @@ static int decodeFlags(MemPage *pPage, int flagByte){ static int btreeInitPage(MemPage *pPage){ assert( pPage->pBt!=0 ); + assert( pPage->pBt->db!=0 ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) ); assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) ); assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) ); if( !pPage->isInit ){ - u16 pc; /* Address of a freeblock within pPage->aData[] */ + int pc; /* Address of a freeblock within pPage->aData[] */ u8 hdr; /* Offset to beginning of page header */ u8 *data; /* Equal to pPage->aData */ BtShared *pBt; /* The main btree structure */ @@ -52147,21 +60652,34 @@ static int btreeInitPage(MemPage *pPage){ hdr = pPage->hdrOffset; data = pPage->aData; + /* EVIDENCE-OF: R-28594-02890 The one-byte flag at offset 0 indicating + ** the b-tree page type. */ if( decodeFlags(pPage, data[hdr]) ) return SQLITE_CORRUPT_BKPT; assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); pPage->maskPage = (u16)(pBt->pageSize - 1); pPage->nOverflow = 0; usableSize = pBt->usableSize; - pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf; + pPage->cellOffset = cellOffset = hdr + 8 + pPage->childPtrSize; pPage->aDataEnd = &data[usableSize]; pPage->aCellIdx = &data[cellOffset]; + pPage->aDataOfst = &data[pPage->childPtrSize]; + /* EVIDENCE-OF: R-58015-48175 The two-byte integer at offset 5 designates + ** the start of the cell content area. A zero value for this integer is + ** interpreted as 65536. */ top = get2byteNotZero(&data[hdr+5]); + /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the + ** number of cells on the page. */ pPage->nCell = get2byte(&data[hdr+3]); if( pPage->nCell>MX_CELL(pBt) ){ /* To many cells for a single page. The page must be corrupt */ return SQLITE_CORRUPT_BKPT; } testcase( pPage->nCell==MX_CELL(pBt) ); + /* EVIDENCE-OF: R-24089-57979 If a page contains no cells (which is only + ** possible for a root page of a table that contains no rows) then the + ** offset to the cell content area will equal the page size minus the + ** bytes of reserved space. */ + assert( pPage->nCell>0 || top==usableSize || CORRUPT_DB ); /* A malformed database page might cause us to read past the end ** of page when parsing a cell. @@ -52172,20 +60690,19 @@ static int btreeInitPage(MemPage *pPage){ */ iCellFirst = cellOffset + 2*pPage->nCell; iCellLast = usableSize - 4; -#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) - { + if( pBt->db->flags & SQLITE_CellSizeCk ){ int i; /* Index into the cell pointer array */ int sz; /* Size of a cell */ if( !pPage->leaf ) iCellLast--; for(i=0; inCell; i++){ - pc = get2byte(&data[cellOffset+i*2]); + pc = get2byteAligned(&data[cellOffset+i*2]); testcase( pc==iCellFirst ); testcase( pc==iCellLast ); if( pciCellLast ){ return SQLITE_CORRUPT_BKPT; } - sz = cellSizePtr(pPage, &data[pc]); + sz = pPage->xCellSize(pPage, &data[pc]); testcase( pc+sz==usableSize ); if( pc+sz>usableSize ){ return SQLITE_CORRUPT_BKPT; @@ -52193,26 +60710,37 @@ static int btreeInitPage(MemPage *pPage){ } if( !pPage->leaf ) iCellLast++; } -#endif - /* Compute the total free space on the page */ + /* Compute the total free space on the page + ** EVIDENCE-OF: R-23588-34450 The two-byte integer at offset 1 gives the + ** start of the first freeblock on the page, or is zero if there are no + ** freeblocks. */ pc = get2byte(&data[hdr+1]); - nFree = data[hdr+7] + top; - while( pc>0 ){ - u16 next, size; - if( pciCellLast ){ - /* Start of free block is off the page */ + nFree = data[hdr+7] + top; /* Init nFree to non-freeblock free space */ + if( pc>0 ){ + u32 next, size; + if( pc0 && next<=pc+size+3) || pc+size>usableSize ){ - /* Free blocks must be in ascending order. And the last byte of - ** the free-block must lie on the database page. */ - return SQLITE_CORRUPT_BKPT; + while( 1 ){ + if( pc>iCellLast ){ + return SQLITE_CORRUPT_BKPT; /* Freeblock off the end of the page */ + } + next = get2byte(&data[pc]); + size = get2byte(&data[pc+2]); + nFree = nFree + size; + if( next<=pc+size+3 ) break; + pc = next; + } + if( next>0 ){ + return SQLITE_CORRUPT_BKPT; /* Freeblock not in ascending order */ + } + if( pc+size>(unsigned int)usableSize ){ + return SQLITE_CORRUPT_BKPT; /* Last freeblock extends past page end */ } - nFree = nFree + size; - pc = next; } /* At this point, nFree contains the sum of the offset to the start @@ -52250,16 +60778,16 @@ static void zeroPage(MemPage *pPage, int flags){ memset(&data[hdr], 0, pBt->usableSize - hdr); } data[hdr] = (char)flags; - first = hdr + 8 + 4*((flags&PTF_LEAF)==0 ?1:0); + first = hdr + ((flags&PTF_LEAF)==0 ? 12 : 8); memset(&data[hdr+1], 0, 4); data[hdr+7] = 0; put2byte(&data[hdr+5], pBt->usableSize); pPage->nFree = (u16)(pBt->usableSize - first); decodeFlags(pPage, flags); - pPage->hdrOffset = hdr; pPage->cellOffset = first; pPage->aDataEnd = &data[pBt->usableSize]; pPage->aCellIdx = &data[first]; + pPage->aDataOfst = &data[pPage->childPtrSize]; pPage->nOverflow = 0; assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); pPage->maskPage = (u16)(pBt->pageSize - 1); @@ -52274,20 +60802,23 @@ static void zeroPage(MemPage *pPage, int flags){ */ static MemPage *btreePageFromDbPage(DbPage *pDbPage, Pgno pgno, BtShared *pBt){ MemPage *pPage = (MemPage*)sqlite3PagerGetExtra(pDbPage); - pPage->aData = sqlite3PagerGetData(pDbPage); - pPage->pDbPage = pDbPage; - pPage->pBt = pBt; - pPage->pgno = pgno; - pPage->hdrOffset = pPage->pgno==1 ? 100 : 0; + if( pgno!=pPage->pgno ){ + pPage->aData = sqlite3PagerGetData(pDbPage); + pPage->pDbPage = pDbPage; + pPage->pBt = pBt; + pPage->pgno = pgno; + pPage->hdrOffset = pgno==1 ? 100 : 0; + } + assert( pPage->aData==sqlite3PagerGetData(pDbPage) ); return pPage; } /* ** Get a page from the pager. Initialize the MemPage.pBt and -** MemPage.aData elements if needed. +** MemPage.aData elements if needed. See also: btreeGetUnusedPage(). ** -** If the noContent flag is set, it means that we do not care about -** the content of the page at this time. So do not go to the disk +** If the PAGER_GET_NOCONTENT flag is set, it means that we do not care +** about the content of the page at this time. So do not go to the disk ** to fetch the content. Just fill in the content with zeros for now. ** If in the future we call sqlite3PagerWrite() on this page, that ** means we have started to be concerned about content and the disk @@ -52304,7 +60835,7 @@ static int btreeGetPage( assert( flags==0 || flags==PAGER_GET_NOCONTENT || flags==PAGER_GET_READONLY ); assert( sqlite3_mutex_held(pBt->mutex) ); - rc = sqlite3PagerAcquire(pBt->pPager, pgno, (DbPage**)&pDbPage, flags); + rc = sqlite3PagerGet(pBt->pPager, pgno, (DbPage**)&pDbPage, flags); if( rc ) return rc; *ppPage = btreePageFromDbPage(pDbPage, pgno, pBt); return SQLITE_OK; @@ -52335,39 +60866,67 @@ static Pgno btreePagecount(BtShared *pBt){ SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree *p){ assert( sqlite3BtreeHoldsMutex(p) ); assert( ((p->pBt->nPage)&0x8000000)==0 ); - return (int)btreePagecount(p->pBt); + return btreePagecount(p->pBt); } /* -** Get a page from the pager and initialize it. This routine is just a -** convenience wrapper around separate calls to btreeGetPage() and -** btreeInitPage(). +** Get a page from the pager and initialize it. ** -** If an error occurs, then the value *ppPage is set to is undefined. It +** If pCur!=0 then the page is being fetched as part of a moveToChild() +** call. Do additional sanity checking on the page in this case. +** And if the fetch fails, this routine must decrement pCur->iPage. +** +** The page is fetched as read-write unless pCur is not NULL and is +** a read-only cursor. +** +** If an error occurs, then *ppPage is undefined. It ** may remain unchanged, or it may be set to an invalid value. */ static int getAndInitPage( BtShared *pBt, /* The database file */ Pgno pgno, /* Number of the page to get */ MemPage **ppPage, /* Write the page pointer here */ - int bReadonly /* PAGER_GET_READONLY or 0 */ + BtCursor *pCur, /* Cursor to receive the page, or NULL */ + int bReadOnly /* True for a read-only page */ ){ int rc; + DbPage *pDbPage; assert( sqlite3_mutex_held(pBt->mutex) ); - assert( bReadonly==PAGER_GET_READONLY || bReadonly==0 ); + assert( pCur==0 || ppPage==&pCur->apPage[pCur->iPage] ); + assert( pCur==0 || bReadOnly==pCur->curPagerFlags ); + assert( pCur==0 || pCur->iPage>0 ); if( pgno>btreePagecount(pBt) ){ rc = SQLITE_CORRUPT_BKPT; - }else{ - rc = btreeGetPage(pBt, pgno, ppPage, bReadonly); - if( rc==SQLITE_OK && (*ppPage)->isInit==0 ){ - rc = btreeInitPage(*ppPage); - if( rc!=SQLITE_OK ){ - releasePage(*ppPage); - } + goto getAndInitPage_error; + } + rc = sqlite3PagerGet(pBt->pPager, pgno, (DbPage**)&pDbPage, bReadOnly); + if( rc ){ + goto getAndInitPage_error; + } + *ppPage = (MemPage*)sqlite3PagerGetExtra(pDbPage); + if( (*ppPage)->isInit==0 ){ + btreePageFromDbPage(pDbPage, pgno, pBt); + rc = btreeInitPage(*ppPage); + if( rc!=SQLITE_OK ){ + releasePage(*ppPage); + goto getAndInitPage_error; } } + assert( (*ppPage)->pgno==pgno ); + assert( (*ppPage)->aData==sqlite3PagerGetData(pDbPage) ); + /* If obtaining a child page for a cursor, we must verify that the page is + ** compatible with the root page. */ + if( pCur && ((*ppPage)->nCell<1 || (*ppPage)->intKey!=pCur->curIntKey) ){ + rc = SQLITE_CORRUPT_BKPT; + releasePage(*ppPage); + goto getAndInitPage_error; + } + return SQLITE_OK; + +getAndInitPage_error: + if( pCur ) pCur->iPage--; testcase( pgno==0 ); assert( pgno!=0 || rc==SQLITE_CORRUPT ); return rc; @@ -52377,17 +60936,48 @@ static int getAndInitPage( ** Release a MemPage. This should be called once for each prior ** call to btreeGetPage. */ -static void releasePage(MemPage *pPage){ - if( pPage ){ - assert( pPage->aData ); - assert( pPage->pBt ); - assert( pPage->pDbPage!=0 ); - assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); - assert( sqlite3PagerGetData(pPage->pDbPage)==pPage->aData ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - sqlite3PagerUnrefNotNull(pPage->pDbPage); - } +static void releasePageNotNull(MemPage *pPage){ + assert( pPage->aData ); + assert( pPage->pBt ); + assert( pPage->pDbPage!=0 ); + assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); + assert( sqlite3PagerGetData(pPage->pDbPage)==pPage->aData ); + assert( sqlite3_mutex_held(pPage->pBt->mutex) ); + sqlite3PagerUnrefNotNull(pPage->pDbPage); } +static void releasePage(MemPage *pPage){ + if( pPage ) releasePageNotNull(pPage); +} + +/* +** Get an unused page. +** +** This works just like btreeGetPage() with the addition: +** +** * If the page is already in use for some other purpose, immediately +** release it and return an SQLITE_CURRUPT error. +** * Make sure the isInit flag is clear +*/ +static int btreeGetUnusedPage( + BtShared *pBt, /* The btree */ + Pgno pgno, /* Number of the page to fetch */ + MemPage **ppPage, /* Return the page in this parameter */ + int flags /* PAGER_GET_NOCONTENT or PAGER_GET_READONLY */ +){ + int rc = btreeGetPage(pBt, pgno, ppPage, flags); + if( rc==SQLITE_OK ){ + if( sqlite3PagerPageRefcount((*ppPage)->pDbPage)>1 ){ + releasePage(*ppPage); + *ppPage = 0; + return SQLITE_CORRUPT_BKPT; + } + (*ppPage)->isInit = 0; + }else{ + *ppPage = 0; + } + return rc; +} + /* ** During a rollback, when the pager reloads information into the cache @@ -52495,7 +61085,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( } p = sqlite3MallocZero(sizeof(Btree)); if( !p ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } p->inTrans = TRANS_NONE; p->db = db; @@ -52511,16 +61101,18 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( */ if( isTempDb==0 && (isMemdb==0 || (vfsFlags&SQLITE_OPEN_URI)!=0) ){ if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){ + int nFilename = sqlite3Strlen30(zFilename)+1; int nFullPathname = pVfs->mxPathname+1; - char *zFullPathname = sqlite3Malloc(nFullPathname); + char *zFullPathname = sqlite3Malloc(MAX(nFullPathname,nFilename)); MUTEX_LOGIC( sqlite3_mutex *mutexShared; ) + p->sharable = 1; if( !zFullPathname ){ sqlite3_free(p); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } if( isMemdb ){ - memcpy(zFullPathname, zFilename, sqlite3Strlen30(zFilename)+1); + memcpy(zFullPathname, zFilename, nFilename); }else{ rc = sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname); @@ -52577,19 +61169,19 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( ** the right size. This is to guard against size changes that result ** when compiling on a different architecture. */ - assert( sizeof(i64)==8 || sizeof(i64)==4 ); - assert( sizeof(u64)==8 || sizeof(u64)==4 ); + assert( sizeof(i64)==8 ); + assert( sizeof(u64)==8 ); assert( sizeof(u32)==4 ); assert( sizeof(u16)==2 ); assert( sizeof(Pgno)==4 ); pBt = sqlite3MallocZero( sizeof(*pBt) ); if( pBt==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto btree_open_out; } rc = sqlite3PagerOpen(pVfs, &pBt->pPager, zFilename, - EXTRA_SIZE, flags, vfsFlags, pageReinit); + sizeof(MemPage), flags, vfsFlags, pageReinit); if( rc==SQLITE_OK ){ sqlite3PagerSetMmapLimit(pBt->pPager, db->szMmap); rc = sqlite3PagerReadFileheader(pBt->pPager,sizeof(zDbHeader),zDbHeader); @@ -52608,6 +61200,9 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( #ifdef SQLITE_SECURE_DELETE pBt->btsFlags |= BTS_SECURE_DELETE; #endif + /* EVIDENCE-OF: R-51873-39618 The page size for a database file is + ** determined by the 2-byte integer located at an offset of 16 bytes from + ** the beginning of the database file. */ pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16); if( pBt->pageSize<512 || pBt->pageSize>SQLITE_MAX_PAGE_SIZE || ((pBt->pageSize-1)&pBt->pageSize)!=0 ){ @@ -52626,6 +61221,9 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( #endif nReserve = 0; }else{ + /* EVIDENCE-OF: R-37497-42412 The size of the reserved region is + ** determined by the one-byte unsigned integer found at an offset of 20 + ** into the database file header. */ nReserve = zDbHeader[20]; pBt->btsFlags |= BTS_PAGESIZE_FIXED; #ifndef SQLITE_OMIT_AUTOVACUUM @@ -52641,15 +61239,14 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( #if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO) /* Add the new BtShared object to the linked list sharable BtShareds. */ + pBt->nRef = 1; if( p->sharable ){ MUTEX_LOGIC( sqlite3_mutex *mutexShared; ) - pBt->nRef = 1; MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);) if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){ pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST); if( pBt->mutex==0 ){ - rc = SQLITE_NOMEM; - db->mallocFailed = 0; + rc = SQLITE_NOMEM_BKPT; goto btree_open_out; } } @@ -52672,12 +61269,12 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( for(i=0; inDb; i++){ if( (pSib = db->aDb[i].pBt)!=0 && pSib->sharable ){ while( pSib->pPrev ){ pSib = pSib->pPrev; } - if( p->pBtpBt ){ + if( (uptr)p->pBt<(uptr)pSib->pBt ){ p->pNext = pSib; p->pPrev = 0; pSib->pPrev = p; }else{ - while( pSib->pNext && pSib->pNext->pBtpBt ){ + while( pSib->pNext && (uptr)pSib->pNext->pBt<(uptr)p->pBt ){ pSib = pSib->pNext; } p->pNext = pSib->pNext; @@ -52697,12 +61294,14 @@ SQLITE_PRIVATE int sqlite3BtreeOpen( btree_open_out: if( rc!=SQLITE_OK ){ if( pBt && pBt->pPager ){ - sqlite3PagerClose(pBt->pPager); + sqlite3PagerClose(pBt->pPager, 0); } sqlite3_free(pBt); sqlite3_free(p); *ppBtree = 0; }else{ + sqlite3_file *pFile; + /* If the B-Tree was successfully opened, set the pager-cache size to the ** default value. Except, when opening on an existing shared pager-cache, ** do not change the pager-cache size. @@ -52710,11 +61309,17 @@ btree_open_out: if( sqlite3BtreeSchema(p, 0, 0)==0 ){ sqlite3PagerSetCachesize(p->pBt->pPager, SQLITE_DEFAULT_CACHE_SIZE); } + + pFile = sqlite3PagerFile(pBt->pPager); + if( pFile->pMethods ){ + sqlite3OsFileControlHint(pFile, SQLITE_FCNTL_PDB, (void*)&pBt->db); + } } if( mutexOpen ){ assert( sqlite3_mutex_held(mutexOpen) ); sqlite3_mutex_leave(mutexOpen); } + assert( rc!=SQLITE_OK || sqlite3BtreeConnectionCount(*ppBtree)>0 ); return rc; } @@ -52760,7 +61365,8 @@ static int removeFromSharingList(BtShared *pBt){ /* ** Make sure pBt->pTmpSpace points to an allocation of -** MX_CELL_SIZE(pBt) bytes. +** MX_CELL_SIZE(pBt) bytes with a 4-byte prefix for a left-child +** pointer. */ static void allocateTempSpace(BtShared *pBt){ if( !pBt->pTmpSpace ){ @@ -52775,8 +61381,16 @@ static void allocateTempSpace(BtShared *pBt){ ** it into a database page. This is not actually a problem, but it ** does cause a valgrind error when the 1 or 2 bytes of unitialized ** data is passed to system call write(). So to avoid this error, - ** zero the first 4 bytes of temp space here. */ - if( pBt->pTmpSpace ) memset(pBt->pTmpSpace, 0, 4); + ** zero the first 4 bytes of temp space here. + ** + ** Also: Provide four bytes of initialized space before the + ** beginning of pTmpSpace as an area available to prepend the + ** left-child pointer to the beginning of a cell. + */ + if( pBt->pTmpSpace ){ + memset(pBt->pTmpSpace, 0, 8); + pBt->pTmpSpace += 4; + } } } @@ -52784,8 +61398,11 @@ static void allocateTempSpace(BtShared *pBt){ ** Free the pBt->pTmpSpace allocation */ static void freeTempSpace(BtShared *pBt){ - sqlite3PageFree( pBt->pTmpSpace); - pBt->pTmpSpace = 0; + if( pBt->pTmpSpace ){ + pBt->pTmpSpace -= 4; + sqlite3PageFree(pBt->pTmpSpace); + pBt->pTmpSpace = 0; + } } /* @@ -52811,7 +61428,7 @@ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){ ** The call to sqlite3BtreeRollback() drops any table-locks held by ** this handle. */ - sqlite3BtreeRollback(p, SQLITE_OK); + sqlite3BtreeRollback(p, SQLITE_OK, 0); sqlite3BtreeLeave(p); /* If there are still other outstanding references to the shared-btree @@ -52826,7 +61443,7 @@ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){ ** Clean out and delete the BtShared object. */ assert( !pBt->pCursor ); - sqlite3PagerClose(pBt->pPager); + sqlite3PagerClose(pBt->pPager, p->db); if( pBt->xFreeSchema && pBt->pSchema ){ pBt->xFreeSchema(pBt->pSchema); } @@ -52847,19 +61464,11 @@ SQLITE_PRIVATE int sqlite3BtreeClose(Btree *p){ } /* -** Change the limit on the number of pages allowed in the cache. -** -** The maximum number of cache pages is set to the absolute -** value of mxPage. If mxPage is negative, the pager will -** operate asynchronously - it will not stop to do fsync()s -** to insure data is written to the disk surface before -** continuing. Transactions still work if synchronous is off, -** and the database cannot be corrupted if this program -** crashes. But if the operating system crashes or there is -** an abrupt power failure when synchronous is off, the database -** could be left in an inconsistent and unrecoverable state. -** Synchronous is on by default so database corruption is not -** normally a worry. +** Change the "soft" limit on the number of pages in the cache. +** Unused and unmodified pages will be recycled when the number of +** pages in the cache exceeds this soft limit. But the size of the +** cache is allowed to grow larger than this limit if it contains +** dirty pages or pages still in active use. */ SQLITE_PRIVATE int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){ BtShared *pBt = p->pBt; @@ -52870,6 +61479,27 @@ SQLITE_PRIVATE int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){ return SQLITE_OK; } +/* +** Change the "spill" limit on the number of pages in the cache. +** If the number of pages exceeds this limit during a write transaction, +** the pager might attempt to "spill" pages to the journal early in +** order to free up memory. +** +** The value returned is the current spill size. If zero is passed +** as an argument, no changes are made to the spill size setting, so +** using mxPage of 0 is a way to query the current spill size. +*/ +SQLITE_PRIVATE int sqlite3BtreeSetSpillSize(Btree *p, int mxPage){ + BtShared *pBt = p->pBt; + int res; + assert( sqlite3_mutex_held(p->db->mutex) ); + sqlite3BtreeEnter(p); + res = sqlite3PagerSetSpillsize(pBt->pPager, mxPage); + sqlite3BtreeLeave(p); + return res; +} + +#if SQLITE_MAX_MMAP_SIZE>0 /* ** Change the limit on the amount of the database file that may be ** memory mapped. @@ -52882,6 +61512,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetMmapLimit(Btree *p, sqlite3_int64 szMmap){ sqlite3BtreeLeave(p); return SQLITE_OK; } +#endif /* SQLITE_MAX_MMAP_SIZE>0 */ /* ** Change the way data is synced to disk in order to increase or decrease @@ -52905,21 +61536,6 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags( } #endif -/* -** Return TRUE if the given btree is set to safety level 1. In other -** words, return TRUE if no sync() occurs on the disk files. -*/ -SQLITE_PRIVATE int sqlite3BtreeSyncDisabled(Btree *p){ - BtShared *pBt = p->pBt; - int rc; - assert( sqlite3_mutex_held(p->db->mutex) ); - sqlite3BtreeEnter(p); - assert( pBt && pBt->pPager ); - rc = sqlite3PagerNosync(pBt->pPager); - sqlite3BtreeLeave(p); - return rc; -} - /* ** Change the default pages size and the number of reserved bytes per page. ** Or, if the page size has already been fixed, return SQLITE_READONLY @@ -52945,6 +61561,9 @@ SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, BtShared *pBt = p->pBt; assert( nReserve>=-1 && nReserve<=255 ); sqlite3BtreeEnter(p); +#if SQLITE_HAS_CODEC + if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve; +#endif if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){ sqlite3BtreeLeave(p); return SQLITE_READONLY; @@ -52956,7 +61575,7 @@ SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE && ((pageSize-1)&pageSize)==0 ){ assert( (pageSize & 7)==0 ); - assert( !pBt->pPage1 && !pBt->pCursor ); + assert( !pBt->pCursor ); pBt->pageSize = (u32)pageSize; freeTempSpace(pBt); } @@ -52974,7 +61593,6 @@ SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree *p){ return p->pBt->pageSize; } -#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG) /* ** This function is similar to sqlite3BtreeGetReserve(), except that it ** may only be called if it is guaranteed that the b-tree mutex is already @@ -52987,25 +61605,33 @@ SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree *p){ ** database handle that owns *p, causing undefined behavior. */ SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p){ + int n; assert( sqlite3_mutex_held(p->pBt->mutex) ); - return p->pBt->pageSize - p->pBt->usableSize; + n = p->pBt->pageSize - p->pBt->usableSize; + return n; } -#endif /* SQLITE_HAS_CODEC || SQLITE_DEBUG */ -#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM) /* ** Return the number of bytes of space at the end of every page that ** are intentually left unused. This is the "reserved" space that is ** sometimes used by extensions. +** +** If SQLITE_HAS_MUTEX is defined then the number returned is the +** greater of the current reserved space and the maximum requested +** reserve space. */ -SQLITE_PRIVATE int sqlite3BtreeGetReserve(Btree *p){ +SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){ int n; sqlite3BtreeEnter(p); - n = p->pBt->pageSize - p->pBt->usableSize; + n = sqlite3BtreeGetReserveNoMutex(p); +#ifdef SQLITE_HAS_CODEC + if( npBt->optimalReserve ) n = p->pBt->optimalReserve; +#endif sqlite3BtreeLeave(p); return n; } + /* ** Set the maximum page count for a database if mxPage is positive. ** No changes are made if mxPage is 0 or negative. @@ -53036,7 +61662,6 @@ SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree *p, int newFlag){ sqlite3BtreeLeave(p); return b; } -#endif /* !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM) */ /* ** Change the 'auto-vacuum' property of the database. If the 'autoVacuum' @@ -53121,6 +61746,9 @@ static int lockBtree(BtShared *pBt){ u32 usableSize; u8 *page1 = pPage1->aData; rc = SQLITE_NOTADB; + /* EVIDENCE-OF: R-43737-39999 Every valid SQLite database file begins + ** with the following 16 bytes (in hex): 53 51 4c 69 74 65 20 66 6f 72 6d + ** 61 74 20 33 00. */ if( memcmp(page1, zMagicHeader, 16)!=0 ){ goto page1_init_failed; } @@ -53153,23 +61781,45 @@ static int lockBtree(BtShared *pBt){ rc = sqlite3PagerOpenWal(pBt->pPager, &isOpen); if( rc!=SQLITE_OK ){ goto page1_init_failed; - }else if( isOpen==0 ){ - releasePage(pPage1); - return SQLITE_OK; + }else{ +#if SQLITE_DEFAULT_SYNCHRONOUS!=SQLITE_DEFAULT_WAL_SYNCHRONOUS + sqlite3 *db; + Db *pDb; + if( (db=pBt->db)!=0 && (pDb=db->aDb)!=0 ){ + while( pDb->pBt==0 || pDb->pBt->pBt!=pBt ){ pDb++; } + if( pDb->bSyncSet==0 + && pDb->safety_level==SQLITE_DEFAULT_SYNCHRONOUS+1 + ){ + pDb->safety_level = SQLITE_DEFAULT_WAL_SYNCHRONOUS+1; + sqlite3PagerSetFlags(pBt->pPager, + pDb->safety_level | (db->flags & PAGER_FLAGS_MASK)); + } + } +#endif + if( isOpen==0 ){ + releasePage(pPage1); + return SQLITE_OK; + } } rc = SQLITE_NOTADB; } #endif - /* The maximum embedded fraction must be exactly 25%. And the minimum - ** embedded fraction must be 12.5% for both leaf-data and non-leaf-data. + /* EVIDENCE-OF: R-15465-20813 The maximum and minimum embedded payload + ** fractions and the leaf payload fraction values must be 64, 32, and 32. + ** ** The original design allowed these amounts to vary, but as of ** version 3.6.0, we require them to be fixed. */ if( memcmp(&page1[21], "\100\040\040",3)!=0 ){ goto page1_init_failed; } + /* EVIDENCE-OF: R-51873-39618 The page size for a database file is + ** determined by the 2-byte integer located at an offset of 16 bytes from + ** the beginning of the database file. */ pageSize = (page1[16]<<8) | (page1[17]<<16); + /* EVIDENCE-OF: R-25008-21688 The size of a page is a power of two + ** between 512 and 65536 inclusive. */ if( ((pageSize-1)&pageSize)!=0 || pageSize>SQLITE_MAX_PAGE_SIZE || pageSize<=256 @@ -53177,6 +61827,13 @@ static int lockBtree(BtShared *pBt){ goto page1_init_failed; } assert( (pageSize & 7)==0 ); + /* EVIDENCE-OF: R-59310-51205 The "reserved space" size in the 1-byte + ** integer at offset 20 is the number of bytes of space at the end of + ** each page to reserve for extensions. + ** + ** EVIDENCE-OF: R-37497-42412 The size of the reserved region is + ** determined by the one-byte unsigned integer found at an offset of 20 + ** into the database file header. */ usableSize = pageSize - page1[20]; if( (u32)pageSize!=pBt->pageSize ){ /* After reading the first page of the database assuming a page size @@ -53197,6 +61854,9 @@ static int lockBtree(BtShared *pBt){ rc = SQLITE_CORRUPT_BKPT; goto page1_init_failed; } + /* EVIDENCE-OF: R-28312-64704 However, the usable size is not allowed to + ** be less than 480. In other words, if the page size is 512, then the + ** reserved space size cannot exceed 32. */ if( usableSize<480 ){ goto page1_init_failed; } @@ -53251,14 +61911,15 @@ page1_init_failed: ** false then all cursors are counted. ** ** For the purposes of this routine, a cursor is any cursor that -** is capable of reading or writing to the databse. Cursors that +** is capable of reading or writing to the database. Cursors that ** have been tripped into the CURSOR_FAULT state are not counted. */ static int countValidCursors(BtShared *pBt, int wrOnly){ BtCursor *pCur; int r = 0; for(pCur=pBt->pCursor; pCur; pCur=pCur->pNext){ - if( (wrOnly==0 || pCur->wrFlag) && pCur->eState!=CURSOR_FAULT ) r++; + if( (wrOnly==0 || (pCur->curFlags & BTCF_WriteFlag)!=0) + && pCur->eState!=CURSOR_FAULT ) r++; } return r; } @@ -53276,11 +61937,11 @@ static void unlockBtreeIfUnused(BtShared *pBt){ assert( sqlite3_mutex_held(pBt->mutex) ); assert( countValidCursors(pBt,0)==0 || pBt->inTransaction>TRANS_NONE ); if( pBt->inTransaction==TRANS_NONE && pBt->pPage1!=0 ){ - assert( pBt->pPage1->aData ); + MemPage *pPage1 = pBt->pPage1; + assert( pPage1->aData ); assert( sqlite3PagerRefcount(pBt->pPager)==1 ); - assert( pBt->pPage1->aData ); - releasePage(pBt->pPage1); pBt->pPage1 = 0; + releasePageNotNull(pPage1); } } @@ -53378,7 +62039,6 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){ ** proceed. */ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ - sqlite3 *pBlock = 0; BtShared *pBt = p->pBt; int rc = SQLITE_OK; @@ -53401,27 +62061,30 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ } #ifndef SQLITE_OMIT_SHARED_CACHE - /* If another database handle has already opened a write transaction - ** on this shared-btree structure and a second write transaction is - ** requested, return SQLITE_LOCKED. - */ - if( (wrflag && pBt->inTransaction==TRANS_WRITE) - || (pBt->btsFlags & BTS_PENDING)!=0 - ){ - pBlock = pBt->pWriter->db; - }else if( wrflag>1 ){ - BtLock *pIter; - for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ - if( pIter->pBtree!=p ){ - pBlock = pIter->pBtree->db; - break; + { + sqlite3 *pBlock = 0; + /* If another database handle has already opened a write transaction + ** on this shared-btree structure and a second write transaction is + ** requested, return SQLITE_LOCKED. + */ + if( (wrflag && pBt->inTransaction==TRANS_WRITE) + || (pBt->btsFlags & BTS_PENDING)!=0 + ){ + pBlock = pBt->pWriter->db; + }else if( wrflag>1 ){ + BtLock *pIter; + for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ + if( pIter->pBtree!=p ){ + pBlock = pIter->pBtree->db; + break; + } } } - } - if( pBlock ){ - sqlite3ConnectionBlocked(p->db, pBlock); - rc = SQLITE_LOCKED_SHAREDCACHE; - goto trans_begun; + if( pBlock ){ + sqlite3ConnectionBlocked(p->db, pBlock); + rc = SQLITE_LOCKED_SHAREDCACHE; + goto trans_begun; + } } #endif @@ -53527,14 +62190,11 @@ static int setChildPtrmaps(MemPage *pPage){ int nCell; /* Number of cells in page pPage */ int rc; /* Return code */ BtShared *pBt = pPage->pBt; - u8 isInitOrig = pPage->isInit; Pgno pgno = pPage->pgno; assert( sqlite3_mutex_held(pPage->pBt->mutex) ); rc = btreeInitPage(pPage); - if( rc!=SQLITE_OK ){ - goto set_child_ptrmaps_out; - } + if( rc!=SQLITE_OK ) return rc; nCell = pPage->nCell; for(i=0; iisInit = isInitOrig; return rc; } @@ -53582,24 +62240,27 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){ } put4byte(pPage->aData, iTo); }else{ - u8 isInitOrig = pPage->isInit; int i; int nCell; + int rc; - btreeInitPage(pPage); + rc = btreeInitPage(pPage); + if( rc ) return rc; nCell = pPage->nCell; for(i=0; iaData+pPage->maskPage - && iFrom==get4byte(&pCell[info.iOverflow]) - ){ - put4byte(&pCell[info.iOverflow], iTo); - break; + pPage->xParseCell(pPage, pCell, &info); + if( info.nLocal pPage->aData+pPage->pBt->usableSize ){ + return SQLITE_CORRUPT_BKPT; + } + if( iFrom==get4byte(pCell+info.nSize-4) ){ + put4byte(pCell+info.nSize-4, iTo); + break; + } } }else{ if( get4byte(pCell)==iFrom ){ @@ -53616,8 +62277,6 @@ static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){ } put4byte(&pPage->aData[pPage->hdrOffset+8], iTo); } - - pPage->isInit = isInitOrig; } return SQLITE_OK; } @@ -53714,7 +62373,7 @@ static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8); ** calling this function again), return SQLITE_DONE. Or, if an error ** occurs, return some other error code. ** -** More specificly, this function attempts to re-organize the database so +** More specifically, this function attempts to re-organize the database so ** that the last page of the file currently in use is no longer in use. ** ** Parameter nFin is the number of pages that this database would contain @@ -53722,7 +62381,7 @@ static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8); ** ** If the bCommit parameter is non-zero, this function assumes that the ** caller will keep calling incrVacuumStep() until it returns SQLITE_DONE -** or an error. bCommit is passed true for an auto-vacuum-on-commmit +** or an error. bCommit is passed true for an auto-vacuum-on-commit ** operation, or false for an incremental vacuum. */ static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){ @@ -53892,7 +62551,7 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *p){ static int autoVacuumCommit(BtShared *pBt){ int rc = SQLITE_OK; Pager *pPager = pBt->pPager; - VVA_ONLY( int nRef = sqlite3PagerRefcount(pPager) ); + VVA_ONLY( int nRef = sqlite3PagerRefcount(pPager); ) assert( sqlite3_mutex_held(pBt->mutex) ); invalidateAllOverflowCache(pBt); @@ -54076,6 +62735,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){ sqlite3BtreeLeave(p); return rc; } + p->iDataVersion--; /* Compensate for pPager->iDataVersion++; */ pBt->inTransaction = TRANS_READ; btreeClearHasContent(pBt); } @@ -54101,60 +62761,91 @@ SQLITE_PRIVATE int sqlite3BtreeCommit(Btree *p){ /* ** This routine sets the state to CURSOR_FAULT and the error -** code to errCode for every cursor on BtShared that pBtree -** references. +** code to errCode for every cursor on any BtShared that pBtree +** references. Or if the writeOnly flag is set to 1, then only +** trip write cursors and leave read cursors unchanged. ** -** Every cursor is tripped, including cursors that belong -** to other database connections that happen to be sharing -** the cache with pBtree. +** Every cursor is a candidate to be tripped, including cursors +** that belong to other database connections that happen to be +** sharing the cache with pBtree. ** -** This routine gets called when a rollback occurs. -** All cursors using the same cache must be tripped -** to prevent them from trying to use the btree after -** the rollback. The rollback may have deleted tables -** or moved root pages, so it is not sufficient to -** save the state of the cursor. The cursor must be -** invalidated. +** This routine gets called when a rollback occurs. If the writeOnly +** flag is true, then only write-cursors need be tripped - read-only +** cursors save their current positions so that they may continue +** following the rollback. Or, if writeOnly is false, all cursors are +** tripped. In general, writeOnly is false if the transaction being +** rolled back modified the database schema. In this case b-tree root +** pages may be moved or deleted from the database altogether, making +** it unsafe for read cursors to continue. +** +** If the writeOnly flag is true and an error is encountered while +** saving the current position of a read-only cursor, all cursors, +** including all read-cursors are tripped. +** +** SQLITE_OK is returned if successful, or if an error occurs while +** saving a cursor position, an SQLite error code. */ -SQLITE_PRIVATE void sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode){ +SQLITE_PRIVATE int sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode, int writeOnly){ BtCursor *p; - if( pBtree==0 ) return; - sqlite3BtreeEnter(pBtree); - for(p=pBtree->pBt->pCursor; p; p=p->pNext){ - int i; - sqlite3BtreeClearCursor(p); - p->eState = CURSOR_FAULT; - p->skipNext = errCode; - for(i=0; i<=p->iPage; i++){ - releasePage(p->apPage[i]); - p->apPage[i] = 0; + int rc = SQLITE_OK; + + assert( (writeOnly==0 || writeOnly==1) && BTCF_WriteFlag==1 ); + if( pBtree ){ + sqlite3BtreeEnter(pBtree); + for(p=pBtree->pBt->pCursor; p; p=p->pNext){ + int i; + if( writeOnly && (p->curFlags & BTCF_WriteFlag)==0 ){ + if( p->eState==CURSOR_VALID || p->eState==CURSOR_SKIPNEXT ){ + rc = saveCursorPosition(p); + if( rc!=SQLITE_OK ){ + (void)sqlite3BtreeTripAllCursors(pBtree, rc, 0); + break; + } + } + }else{ + sqlite3BtreeClearCursor(p); + p->eState = CURSOR_FAULT; + p->skipNext = errCode; + } + for(i=0; i<=p->iPage; i++){ + releasePage(p->apPage[i]); + p->apPage[i] = 0; + } } + sqlite3BtreeLeave(pBtree); } - sqlite3BtreeLeave(pBtree); + return rc; } /* -** Rollback the transaction in progress. All cursors will be -** invalided by this operation. Any attempt to use a cursor -** that was open at the beginning of this operation will result -** in an error. +** Rollback the transaction in progress. +** +** If tripCode is not SQLITE_OK then cursors will be invalidated (tripped). +** Only write cursors are tripped if writeOnly is true but all cursors are +** tripped if writeOnly is false. Any attempt to use +** a tripped cursor will result in an error. ** ** This will release the write lock on the database file. If there ** are no active cursors, it also releases the read lock. */ -SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode){ +SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode, int writeOnly){ int rc; BtShared *pBt = p->pBt; MemPage *pPage1; + assert( writeOnly==1 || writeOnly==0 ); + assert( tripCode==SQLITE_ABORT_ROLLBACK || tripCode==SQLITE_OK ); sqlite3BtreeEnter(p); if( tripCode==SQLITE_OK ){ rc = tripCode = saveAllCursors(pBt, 0, 0); + if( rc ) writeOnly = 0; }else{ rc = SQLITE_OK; } if( tripCode ){ - sqlite3BtreeTripAllCursors(p, tripCode); + int rc2 = sqlite3BtreeTripAllCursors(p, tripCode, writeOnly); + assert( rc==SQLITE_OK || (writeOnly==0 && rc2==SQLITE_OK) ); + if( rc2!=SQLITE_OK ) rc = rc2; } btreeIntegrity(p); @@ -54189,7 +62880,7 @@ SQLITE_PRIVATE int sqlite3BtreeRollback(Btree *p, int tripCode){ } /* -** Start a statement subtransaction. The subtransaction can can be rolled +** Start a statement subtransaction. The subtransaction can be rolled ** back independently of the main transaction. You must start a transaction ** before starting a subtransaction. The subtransaction is ended automatically ** if the main transaction commits or rolls back. @@ -54244,7 +62935,12 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ assert( op==SAVEPOINT_RELEASE || op==SAVEPOINT_ROLLBACK ); assert( iSavepoint>=0 || (iSavepoint==-1 && op==SAVEPOINT_ROLLBACK) ); sqlite3BtreeEnter(p); - rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint); + if( op==SAVEPOINT_ROLLBACK ){ + rc = saveAllCursors(pBt, 0, 0); + } + if( rc==SQLITE_OK ){ + rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint); + } if( rc==SQLITE_OK ){ if( iSavepoint<0 && (pBt->btsFlags & BTS_INITIALLY_EMPTY)!=0 ){ pBt->nPage = 0; @@ -54269,13 +62965,13 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ ** on the database already. If a write-cursor is requested, then ** the caller is assumed to have an open write transaction. ** -** If wrFlag==0, then the cursor can only be used for reading. -** If wrFlag==1, then the cursor can be used for reading or for -** writing if other conditions for writing are also met. These -** are the conditions that must be met in order for writing to -** be allowed: +** If the BTREE_WRCSR bit of wrFlag is clear, then the cursor can only +** be used for reading. If the BTREE_WRCSR bit is set, then the cursor +** can be used for reading or for writing if other conditions for writing +** are also met. These are the conditions that must be met in order +** for writing to be allowed: ** -** 1: The cursor must have been opened with wrFlag==1 +** 1: The cursor must have been opened with wrFlag containing BTREE_WRCSR ** ** 2: Other database connections that share the same pager cache ** but which are not in the READ_UNCOMMITTED state may not have @@ -54287,6 +62983,16 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ ** ** 4: There must be an active transaction. ** +** The BTREE_FORDELETE bit of wrFlag may optionally be set if BTREE_WRCSR +** is set. If FORDELETE is set, that is a hint to the implementation that +** this cursor will only be used to seek to and delete entries of an index +** as part of a larger DELETE statement. The FORDELETE hint is not used by +** this implementation. But in a hypothetical alternative storage engine +** in which index entries are automatically deleted when corresponding table +** rows are deleted, the FORDELETE flag is a hint that all SEEK and DELETE +** operations on this cursor can be no-ops and all READ operations can +** return a null row (2-bytes: 0x01 0x00). +** ** No checking is done to make sure that page iTable really is the ** root page of a b-tree. If it is not, then the cursor acquired ** will not work correctly. @@ -54302,24 +63008,30 @@ static int btreeCursor( BtCursor *pCur /* Space for new cursor */ ){ BtShared *pBt = p->pBt; /* Shared b-tree handle */ + BtCursor *pX; /* Looping over other all cursors */ assert( sqlite3BtreeHoldsMutex(p) ); - assert( wrFlag==0 || wrFlag==1 ); + assert( wrFlag==0 + || wrFlag==BTREE_WRCSR + || wrFlag==(BTREE_WRCSR|BTREE_FORDELETE) + ); /* The following assert statements verify that if this is a sharable ** b-tree database, the connection is holding the required table locks, ** and that no other connection has any open cursor that conflicts with ** this lock. */ - assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, wrFlag+1) ); + assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1)) ); assert( wrFlag==0 || !hasReadConflicts(p, iTable) ); /* Assert that the caller has opened the required transaction. */ assert( p->inTrans>TRANS_NONE ); assert( wrFlag==0 || p->inTrans==TRANS_WRITE ); assert( pBt->pPage1 && pBt->pPage1->aData ); + assert( wrFlag==0 || (pBt->btsFlags & BTS_READ_ONLY)==0 ); - if( NEVER(wrFlag && (pBt->btsFlags & BTS_READ_ONLY)!=0) ){ - return SQLITE_READONLY; + if( wrFlag ){ + allocateTempSpace(pBt); + if( pBt->pTmpSpace==0 ) return SQLITE_NOMEM_BKPT; } if( iTable==1 && btreePagecount(pBt)==0 ){ assert( wrFlag==0 ); @@ -54333,14 +63045,19 @@ static int btreeCursor( pCur->pKeyInfo = pKeyInfo; pCur->pBtree = p; pCur->pBt = pBt; - pCur->wrFlag = (u8)wrFlag; - pCur->pNext = pBt->pCursor; - if( pCur->pNext ){ - pCur->pNext->pPrev = pCur; + pCur->curFlags = wrFlag ? BTCF_WriteFlag : 0; + pCur->curPagerFlags = wrFlag ? 0 : PAGER_GET_READONLY; + /* If there are two or more cursors on the same btree, then all such + ** cursors *must* have the BTCF_Multiple flag set. */ + for(pX=pBt->pCursor; pX; pX=pX->pNext){ + if( pX->pgnoRoot==(Pgno)iTable ){ + pX->curFlags |= BTCF_Multiple; + pCur->curFlags |= BTCF_Multiple; + } } + pCur->pNext = pBt->pCursor; pBt->pCursor = pCur; pCur->eState = CURSOR_INVALID; - pCur->cachedRowid = 0; return SQLITE_OK; } SQLITE_PRIVATE int sqlite3BtreeCursor( @@ -54351,9 +63068,13 @@ SQLITE_PRIVATE int sqlite3BtreeCursor( BtCursor *pCur /* Write new cursor here */ ){ int rc; - sqlite3BtreeEnter(p); - rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); - sqlite3BtreeLeave(p); + if( iTable<1 ){ + rc = SQLITE_CORRUPT_BKPT; + }else{ + sqlite3BtreeEnter(p); + rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); + sqlite3BtreeLeave(p); + } return rc; } @@ -54381,36 +63102,6 @@ SQLITE_PRIVATE void sqlite3BtreeCursorZero(BtCursor *p){ memset(p, 0, offsetof(BtCursor, iPage)); } -/* -** Set the cached rowid value of every cursor in the same database file -** as pCur and having the same root page number as pCur. The value is -** set to iRowid. -** -** Only positive rowid values are considered valid for this cache. -** The cache is initialized to zero, indicating an invalid cache. -** A btree will work fine with zero or negative rowids. We just cannot -** cache zero or negative rowids, which means tables that use zero or -** negative rowids might run a little slower. But in practice, zero -** or negative rowids are very uncommon so this should not be a problem. -*/ -SQLITE_PRIVATE void sqlite3BtreeSetCachedRowid(BtCursor *pCur, sqlite3_int64 iRowid){ - BtCursor *p; - for(p=pCur->pBt->pCursor; p; p=p->pNext){ - if( p->pgnoRoot==pCur->pgnoRoot ) p->cachedRowid = iRowid; - } - assert( pCur->cachedRowid==iRowid ); -} - -/* -** Return the cached rowid for the given cursor. A negative or zero -** return value indicates that the rowid cache is invalid and should be -** ignored. If the rowid cache has never before been set, then a -** zero is returned. -*/ -SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor *pCur){ - return pCur->cachedRowid; -} - /* ** Close a cursor. The read lock on the database file is released ** when the last cursor is closed. @@ -54422,19 +63113,24 @@ SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor *pCur){ BtShared *pBt = pCur->pBt; sqlite3BtreeEnter(pBtree); sqlite3BtreeClearCursor(pCur); - if( pCur->pPrev ){ - pCur->pPrev->pNext = pCur->pNext; - }else{ + assert( pBt->pCursor!=0 ); + if( pBt->pCursor==pCur ){ pBt->pCursor = pCur->pNext; - } - if( pCur->pNext ){ - pCur->pNext->pPrev = pCur->pPrev; + }else{ + BtCursor *pPrev = pBt->pCursor; + do{ + if( pPrev->pNext==pCur ){ + pPrev->pNext = pCur->pNext; + break; + } + pPrev = pPrev->pNext; + }while( ALWAYS(pPrev) ); } for(i=0; i<=pCur->iPage; i++){ releasePage(pCur->apPage[i]); } unlockBtreeIfUnused(pBt); - invalidateOverflowCache(pCur); + sqlite3_free(pCur->aOverflow); /* sqlite3_free(pCur); */ sqlite3BtreeLeave(pBtree); } @@ -54448,13 +63144,6 @@ SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor *pCur){ ** ** BtCursor.info is a cache of the information in the current cell. ** Using this cache reduces the number of calls to btreeParseCell(). -** -** 2007-06-25: There is a bug in some versions of MSVC that cause the -** compiler to crash when getCellInfo() is implemented as a macro. -** But there is a measureable speed advantage to using the macro on gcc -** (when less compiler optimizations like -Os or -O0 are used and the -** compiler is not doing agressive inlining.) So we use a real function -** for MSVC and a macro for everything else. Ticket #2457. */ #ifndef NDEBUG static void assertCellInfo(BtCursor *pCur){ @@ -54467,28 +63156,15 @@ SQLITE_PRIVATE int sqlite3BtreeCloseCursor(BtCursor *pCur){ #else #define assertCellInfo(x) #endif -#ifdef _MSC_VER - /* Use a real function in MSVC to work around bugs in that compiler. */ - static void getCellInfo(BtCursor *pCur){ - if( pCur->info.nSize==0 ){ - int iPage = pCur->iPage; - btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info); - pCur->validNKey = 1; - }else{ - assertCellInfo(pCur); - } +static SQLITE_NOINLINE void getCellInfo(BtCursor *pCur){ + if( pCur->info.nSize==0 ){ + int iPage = pCur->iPage; + pCur->curFlags |= BTCF_ValidNKey; + btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info); + }else{ + assertCellInfo(pCur); } -#else /* if not _MSC_VER */ - /* Use a macro in all other compilers so that the function is inlined */ -#define getCellInfo(pCur) \ - if( pCur->info.nSize==0 ){ \ - int iPage = pCur->iPage; \ - btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info); \ - pCur->validNKey = 1; \ - }else{ \ - assertCellInfo(pCur); \ - } -#endif /* _MSC_VER */ +} #ifndef NDEBUG /* The next routine used only within assert() statements */ /* @@ -54500,49 +63176,39 @@ SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor *pCur){ return pCur && pCur->eState==CURSOR_VALID; } #endif /* NDEBUG */ - -/* -** Set *pSize to the size of the buffer needed to hold the value of -** the key for the current entry. If the cursor is not pointing -** to a valid entry, *pSize is set to 0. -** -** For a table with the INTKEY flag set, this routine returns the key -** itself, not the number of bytes in the key. -** -** The caller must position the cursor prior to invoking this routine. -** -** This routine cannot fail. It always returns SQLITE_OK. -*/ -SQLITE_PRIVATE int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){ - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_INVALID || pCur->eState==CURSOR_VALID ); - if( pCur->eState!=CURSOR_VALID ){ - *pSize = 0; - }else{ - getCellInfo(pCur); - *pSize = pCur->info.nKey; - } - return SQLITE_OK; +SQLITE_PRIVATE int sqlite3BtreeCursorIsValidNN(BtCursor *pCur){ + assert( pCur!=0 ); + return pCur->eState==CURSOR_VALID; } /* -** Set *pSize to the number of bytes of data in the entry the -** cursor currently points to. +** Return the value of the integer key or "rowid" for a table btree. +** This routine is only valid for a cursor that is pointing into a +** ordinary table btree. If the cursor points to an index btree or +** is invalid, the result of this routine is undefined. +*/ +SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor *pCur){ + assert( cursorHoldsMutex(pCur) ); + assert( pCur->eState==CURSOR_VALID ); + assert( pCur->curIntKey ); + getCellInfo(pCur); + return pCur->info.nKey; +} + +/* +** Return the number of bytes of payload for the entry that pCur is +** currently pointing to. For table btrees, this will be the amount +** of data. For index btrees, this will be the size of the key. ** ** The caller must guarantee that the cursor is pointing to a non-NULL ** valid entry. In other words, the calling procedure must guarantee ** that the cursor has Cursor.eState==CURSOR_VALID. -** -** Failure is not possible. This function always returns SQLITE_OK. -** It might just as well be a procedure (returning void) but we continue -** to return an integer result code for historical reasons. */ -SQLITE_PRIVATE int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){ +SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor *pCur){ assert( cursorHoldsMutex(pCur) ); assert( pCur->eState==CURSOR_VALID ); getCellInfo(pCur); - *pSize = pCur->info.nData; - return SQLITE_OK; + return pCur->info.nPayload; } /* @@ -54655,10 +63321,11 @@ static int copyPayload( /* ** This function is used to read or overwrite payload information -** for the entry that the pCur cursor is pointing to. If the eOp -** parameter is 0, this is a read operation (data copied into -** buffer pBuf). If it is non-zero, a write (data copied from -** buffer pBuf). +** for the entry that the pCur cursor is pointing to. The eOp +** argument is interpreted as follows: +** +** 0: The operation is a read. Populate the overflow cache. +** 1: The operation is a write. Populate the overflow cache. ** ** A total of "amt" bytes are read or written beginning at "offset". ** Data is read to or from the buffer pBuf. @@ -54666,13 +63333,13 @@ static int copyPayload( ** The content being read or written might appear on the main page ** or be scattered out on multiple overflow pages. ** -** If the BtCursor.isIncrblobHandle flag is set, and the current -** cursor entry uses one or more overflow pages, this function -** allocates space for and lazily popluates the overflow page-list -** cache array (BtCursor.aOverflow). Subsequent calls use this -** cache to make seeking to the supplied offset more efficient. +** If the current cursor entry uses one or more overflow pages +** this function may allocate space for and lazily populate +** the overflow page-list cache array (BtCursor.aOverflow). +** Subsequent calls use this cache to make seeking to the supplied offset +** more efficient. ** -** Once an overflow page-list cache has been allocated, it may be +** Once an overflow page-list cache has been allocated, it must be ** invalidated if some other cursor writes to the same table, or if ** the cursor is moved to a different row. Additionally, in auto-vacuum ** mode, the following events may invalidate an overflow page-list cache. @@ -54690,24 +63357,30 @@ static int accessPayload( ){ unsigned char *aPayload; int rc = SQLITE_OK; - u32 nKey; int iIdx = 0; MemPage *pPage = pCur->apPage[pCur->iPage]; /* Btree page of current entry */ BtShared *pBt = pCur->pBt; /* Btree this cursor belongs to */ +#ifdef SQLITE_DIRECT_OVERFLOW_READ + unsigned char * const pBufStart = pBuf; /* Start of original out buffer */ +#endif assert( pPage ); + assert( eOp==0 || eOp==1 ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->aiIdx[pCur->iPage]nCell ); assert( cursorHoldsMutex(pCur) ); getCellInfo(pCur); - aPayload = pCur->info.pCell + pCur->info.nHeader; - nKey = (pPage->intKey ? 0 : (int)pCur->info.nKey); + aPayload = pCur->info.pPayload; + assert( offset+amt <= pCur->info.nPayload ); - if( NEVER(offset+amt > nKey+pCur->info.nData) - || &aPayload[pCur->info.nLocal] > &pPage->aData[pBt->usableSize] - ){ - /* Trying to read or write past the end of the data is an error */ + assert( aPayload > pPage->aData ); + if( (uptr)(aPayload - pPage->aData) > (pBt->usableSize - pCur->info.nLocal) ){ + /* Trying to read or write past the end of the data is an error. The + ** conditional above is really: + ** &aPayload[pCur->info.nLocal] > &pPage->aData[pBt->usableSize] + ** but is recast into its current form to avoid integer overflow problems + */ return SQLITE_CORRUPT_BKPT; } @@ -54725,50 +63398,54 @@ static int accessPayload( offset -= pCur->info.nLocal; } + if( rc==SQLITE_OK && amt>0 ){ const u32 ovflSize = pBt->usableSize - 4; /* Bytes content per ovfl page */ Pgno nextPage; nextPage = get4byte(&aPayload[pCur->info.nLocal]); -#ifndef SQLITE_OMIT_INCRBLOB - /* If the isIncrblobHandle flag is set and the BtCursor.aOverflow[] - ** has not been allocated, allocate it now. The array is sized at - ** one entry for each overflow page in the overflow chain. The - ** page number of the first overflow page is stored in aOverflow[0], - ** etc. A value of 0 in the aOverflow[] array means "not yet known" - ** (the cache is lazily populated). + /* If the BtCursor.aOverflow[] has not been allocated, allocate it now. + ** + ** The aOverflow[] array is sized at one entry for each overflow page + ** in the overflow chain. The page number of the first overflow page is + ** stored in aOverflow[0], etc. A value of 0 in the aOverflow[] array + ** means "not yet known" (the cache is lazily populated). */ - if( pCur->isIncrblobHandle && !pCur->aOverflow ){ + if( (pCur->curFlags & BTCF_ValidOvfl)==0 ){ int nOvfl = (pCur->info.nPayload-pCur->info.nLocal+ovflSize-1)/ovflSize; - pCur->aOverflow = (Pgno *)sqlite3MallocZero(sizeof(Pgno)*nOvfl); - /* nOvfl is always positive. If it were zero, fetchPayload would have - ** been used instead of this routine. */ - if( ALWAYS(nOvfl) && !pCur->aOverflow ){ - rc = SQLITE_NOMEM; + if( nOvfl>pCur->nOvflAlloc ){ + Pgno *aNew = (Pgno*)sqlite3Realloc( + pCur->aOverflow, nOvfl*2*sizeof(Pgno) + ); + if( aNew==0 ){ + return SQLITE_NOMEM_BKPT; + }else{ + pCur->nOvflAlloc = nOvfl*2; + pCur->aOverflow = aNew; + } + } + memset(pCur->aOverflow, 0, nOvfl*sizeof(Pgno)); + pCur->curFlags |= BTCF_ValidOvfl; + }else{ + /* If the overflow page-list cache has been allocated and the + ** entry for the first required overflow page is valid, skip + ** directly to it. + */ + if( pCur->aOverflow[offset/ovflSize] ){ + iIdx = (offset/ovflSize); + nextPage = pCur->aOverflow[iIdx]; + offset = (offset%ovflSize); } } - /* If the overflow page-list cache has been allocated and the - ** entry for the first required overflow page is valid, skip - ** directly to it. - */ - if( pCur->aOverflow && pCur->aOverflow[offset/ovflSize] ){ - iIdx = (offset/ovflSize); - nextPage = pCur->aOverflow[iIdx]; - offset = (offset%ovflSize); - } -#endif - - for( ; rc==SQLITE_OK && amt>0 && nextPage; iIdx++){ - -#ifndef SQLITE_OMIT_INCRBLOB + assert( rc==SQLITE_OK && amt>0 ); + while( nextPage ){ /* If required, populate the overflow page-list cache. */ - if( pCur->aOverflow ){ - assert(!pCur->aOverflow[iIdx] || pCur->aOverflow[iIdx]==nextPage); - pCur->aOverflow[iIdx] = nextPage; - } -#endif + assert( pCur->aOverflow[iIdx]==0 + || pCur->aOverflow[iIdx]==nextPage + || CORRUPT_DB ); + pCur->aOverflow[iIdx] = nextPage; if( offset>=ovflSize ){ /* The only reason to read this page is to obtain the page @@ -54777,19 +63454,20 @@ static int accessPayload( ** page-list cache, if any, then fall back to the getOverflowPage() ** function. */ -#ifndef SQLITE_OMIT_INCRBLOB - if( pCur->aOverflow && pCur->aOverflow[iIdx+1] ){ + assert( pCur->curFlags & BTCF_ValidOvfl ); + assert( pCur->pBtree->db==pBt->db ); + if( pCur->aOverflow[iIdx+1] ){ nextPage = pCur->aOverflow[iIdx+1]; - } else -#endif + }else{ rc = getOverflowPage(pBt, nextPage, 0, &nextPage); + } offset -= ovflSize; }else{ /* Need to read this page properly. It contains some of the ** range of data that is being read (eOp==0) or written (eOp!=0). */ #ifdef SQLITE_DIRECT_OVERFLOW_READ - sqlite3_file *fd; + sqlite3_file *fd; /* File from which to do direct overflow read */ #endif int a = amt; if( a + offset > ovflSize ){ @@ -54801,9 +63479,10 @@ static int accessPayload( ** ** 1) this is a read operation, and ** 2) data is required from the start of this overflow page, and - ** 3) the database is file-backed, and - ** 4) there is no open write-transaction, and - ** 5) the database is not a WAL database, + ** 3) there is no open write-transaction, and + ** 4) the database is file-backed, and + ** 5) the page is not in the WAL file + ** 6) at least 4 bytes have already been read into the output buffer ** ** then data can be read directly from the database file into the ** output buffer, bypassing the page-cache altogether. This speeds @@ -54811,12 +63490,14 @@ static int accessPayload( */ if( eOp==0 /* (1) */ && offset==0 /* (2) */ - && pBt->inTransaction==TRANS_READ /* (4) */ - && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (3) */ - && pBt->pPage1->aData[19]==0x01 /* (5) */ + && pBt->inTransaction==TRANS_READ /* (3) */ + && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (4) */ + && 0==sqlite3PagerUseWal(pBt->pPager, nextPage) /* (5) */ + && &pBuf[-4]>=pBufStart /* (6) */ ){ u8 aSave[4]; u8 *aWrite = &pBuf[-4]; + assert( aWrite>=pBufStart ); /* due to (6) */ memcpy(aSave, aWrite, 4); rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1)); nextPage = get4byte(aWrite); @@ -54826,7 +63507,7 @@ static int accessPayload( { DbPage *pDbPage; - rc = sqlite3PagerAcquire(pBt->pPager, nextPage, &pDbPage, + rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage, (eOp==0 ? PAGER_GET_READONLY : 0) ); if( rc==SQLITE_OK ){ @@ -54838,30 +63519,38 @@ static int accessPayload( } } amt -= a; + if( amt==0 ) return rc; pBuf += a; } + if( rc ) break; + iIdx++; } } if( rc==SQLITE_OK && amt>0 ){ - return SQLITE_CORRUPT_BKPT; + return SQLITE_CORRUPT_BKPT; /* Overflow chain ends prematurely */ } return rc; } /* -** Read part of the key associated with cursor pCur. Exactly -** "amt" bytes will be transfered into pBuf[]. The transfer +** Read part of the payload for the row at which that cursor pCur is currently +** pointing. "amt" bytes will be transferred into pBuf[]. The transfer ** begins at "offset". ** -** The caller must ensure that pCur is pointing to a valid row -** in the table. +** pCur can be pointing to either a table or an index b-tree. +** If pointing to a table btree, then the content section is read. If +** pCur is pointing to an index b-tree then the key section is read. +** +** For sqlite3BtreePayload(), the caller must ensure that pCur is pointing +** to a valid row in the table. For sqlite3BtreePayloadChecked(), the +** cursor might be invalid or might need to be restored before being read. ** ** Return SQLITE_OK on success or an error code if anything goes ** wrong. An error is returned if "offset+amt" is larger than ** the available payload. */ -SQLITE_PRIVATE int sqlite3BtreeKey(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ +SQLITE_PRIVATE int sqlite3BtreePayload(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ assert( cursorHoldsMutex(pCur) ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->iPage>=0 && pCur->apPage[pCur->iPage] ); @@ -54870,33 +63559,34 @@ SQLITE_PRIVATE int sqlite3BtreeKey(BtCursor *pCur, u32 offset, u32 amt, void *pB } /* -** Read part of the data associated with cursor pCur. Exactly -** "amt" bytes will be transfered into pBuf[]. The transfer -** begins at "offset". -** -** Return SQLITE_OK on success or an error code if anything goes -** wrong. An error is returned if "offset+amt" is larger than -** the available payload. +** This variant of sqlite3BtreePayload() works even if the cursor has not +** in the CURSOR_VALID state. It is only used by the sqlite3_blob_read() +** interface. */ -SQLITE_PRIVATE int sqlite3BtreeData(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ - int rc; - #ifndef SQLITE_OMIT_INCRBLOB +static SQLITE_NOINLINE int accessPayloadChecked( + BtCursor *pCur, + u32 offset, + u32 amt, + void *pBuf +){ + int rc; if ( pCur->eState==CURSOR_INVALID ){ return SQLITE_ABORT; } -#endif - - assert( cursorHoldsMutex(pCur) ); - rc = restoreCursorPosition(pCur); - if( rc==SQLITE_OK ){ - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->iPage>=0 && pCur->apPage[pCur->iPage] ); - assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); - rc = accessPayload(pCur, offset, amt, pBuf, 0); - } - return rc; + assert( cursorOwnsBtShared(pCur) ); + rc = btreeRestoreCursorPosition(pCur); + return rc ? rc : accessPayload(pCur, offset, amt, pBuf, 0); } +SQLITE_PRIVATE int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ + if( pCur->eState==CURSOR_VALID ){ + assert( cursorOwnsBtShared(pCur) ); + return accessPayload(pCur, offset, amt, pBuf, 0); + }else{ + return accessPayloadChecked(pCur, offset, amt, pBuf); + } +} +#endif /* SQLITE_OMIT_INCRBLOB */ /* ** Return a pointer to payload information from the entry that the @@ -54921,17 +63611,19 @@ static const void *fetchPayload( BtCursor *pCur, /* Cursor pointing to entry to read from */ u32 *pAmt /* Write the number of available bytes here */ ){ + u32 amt; assert( pCur!=0 && pCur->iPage>=0 && pCur->apPage[pCur->iPage]); assert( pCur->eState==CURSOR_VALID ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); - if( pCur->info.nSize==0 ){ - btreeParseCell(pCur->apPage[pCur->iPage], pCur->aiIdx[pCur->iPage], - &pCur->info); - } - *pAmt = pCur->info.nLocal; - return (void*)(pCur->info.pCell + pCur->info.nHeader); + assert( pCur->info.nSize>0 ); + assert( pCur->info.pPayload>pCur->apPage[pCur->iPage]->aData || CORRUPT_DB ); + assert( pCur->info.pPayloadapPage[pCur->iPage]->aDataEnd ||CORRUPT_DB); + amt = (int)(pCur->apPage[pCur->iPage]->aDataEnd - pCur->info.pPayload); + if( pCur->info.nLocalinfo.nLocal; + *pAmt = amt; + return (void*)pCur->info.pPayload; } @@ -54949,10 +63641,7 @@ static const void *fetchPayload( ** These routines is used to get quick access to key and data ** in the common case where no overflow pages are used. */ -SQLITE_PRIVATE const void *sqlite3BtreeKeyFetch(BtCursor *pCur, u32 *pAmt){ - return fetchPayload(pCur, pAmt); -} -SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor *pCur, u32 *pAmt){ +SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor *pCur, u32 *pAmt){ return fetchPayload(pCur, pAmt); } @@ -54967,34 +63656,24 @@ SQLITE_PRIVATE const void *sqlite3BtreeDataFetch(BtCursor *pCur, u32 *pAmt){ ** vice-versa). */ static int moveToChild(BtCursor *pCur, u32 newPgno){ - int rc; - int i = pCur->iPage; - MemPage *pNewPage; BtShared *pBt = pCur->pBt; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->iPageiPage>=0 ); if( pCur->iPage>=(BTCURSOR_MAX_DEPTH-1) ){ return SQLITE_CORRUPT_BKPT; } - rc = getAndInitPage(pBt, newPgno, &pNewPage, - pCur->wrFlag==0 ? PAGER_GET_READONLY : 0); - if( rc ) return rc; - pCur->apPage[i+1] = pNewPage; - pCur->aiIdx[i+1] = 0; - pCur->iPage++; - pCur->info.nSize = 0; - pCur->validNKey = 0; - if( pNewPage->nCell<1 || pNewPage->intKey!=pCur->apPage[i]->intKey ){ - return SQLITE_CORRUPT_BKPT; - } - return SQLITE_OK; + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl); + pCur->iPage++; + pCur->aiIdx[pCur->iPage] = 0; + return getAndInitPage(pBt, newPgno, &pCur->apPage[pCur->iPage], + pCur, pCur->curPagerFlags); } -#if 0 +#if SQLITE_DEBUG /* ** Page pParent is an internal (non-leaf) tree page. This function ** asserts that page number iChild is the left-child if the iIdx'th @@ -55003,6 +63682,8 @@ static int moveToChild(BtCursor *pCur, u32 newPgno){ ** the page. */ static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){ + if( CORRUPT_DB ) return; /* The conditions tested below might not be true + ** in a corrupt database */ assert( iIdx<=pParent->nCell ); if( iIdx==pParent->nCell ){ assert( get4byte(&pParent->aData[pParent->hdrOffset+8])==iChild ); @@ -55023,29 +63704,19 @@ static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){ ** the largest cell index. */ static void moveToParent(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState==CURSOR_VALID ); assert( pCur->iPage>0 ); assert( pCur->apPage[pCur->iPage] ); - - /* UPDATE: It is actually possible for the condition tested by the assert - ** below to be untrue if the database file is corrupt. This can occur if - ** one cursor has modified page pParent while a reference to it is held - ** by a second cursor. Which can only happen if a single page is linked - ** into more than one b-tree structure in a corrupt database. */ -#if 0 assertParentIndex( pCur->apPage[pCur->iPage-1], pCur->aiIdx[pCur->iPage-1], pCur->apPage[pCur->iPage]->pgno ); -#endif testcase( pCur->aiIdx[pCur->iPage-1] > pCur->apPage[pCur->iPage-1]->nCell ); - - releasePage(pCur->apPage[pCur->iPage]); - pCur->iPage--; pCur->info.nSize = 0; - pCur->validNKey = 0; + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl); + releasePageNotNull(pCur->apPage[pCur->iPage--]); } /* @@ -55073,7 +63744,7 @@ static int moveToRoot(BtCursor *pCur){ MemPage *pRoot; int rc = SQLITE_OK; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( CURSOR_INVALID < CURSOR_REQUIRESEEK ); assert( CURSOR_VALID < CURSOR_REQUIRESEEK ); assert( CURSOR_FAULT > CURSOR_REQUIRESEEK ); @@ -55086,18 +63757,26 @@ static int moveToRoot(BtCursor *pCur){ } if( pCur->iPage>=0 ){ - while( pCur->iPage ) releasePage(pCur->apPage[pCur->iPage--]); + if( pCur->iPage ){ + do{ + assert( pCur->apPage[pCur->iPage]!=0 ); + releasePageNotNull(pCur->apPage[pCur->iPage--]); + }while( pCur->iPage); + goto skip_init; + } }else if( pCur->pgnoRoot==0 ){ pCur->eState = CURSOR_INVALID; return SQLITE_OK; }else{ + assert( pCur->iPage==(-1) ); rc = getAndInitPage(pCur->pBtree->pBt, pCur->pgnoRoot, &pCur->apPage[0], - pCur->wrFlag==0 ? PAGER_GET_READONLY : 0); + 0, pCur->curPagerFlags); if( rc!=SQLITE_OK ){ pCur->eState = CURSOR_INVALID; - return rc; + return rc; } pCur->iPage = 0; + pCur->curIntKey = pCur->apPage[0]->intKey; } pRoot = pCur->apPage[0]; assert( pRoot->pgno==pCur->pgnoRoot ); @@ -55117,11 +63796,12 @@ static int moveToRoot(BtCursor *pCur){ return SQLITE_CORRUPT_BKPT; } +skip_init: pCur->aiIdx[0] = 0; pCur->info.nSize = 0; - pCur->atLast = 0; - pCur->validNKey = 0; + pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidNKey|BTCF_ValidOvfl); + pRoot = pCur->apPage[0]; if( pRoot->nCell>0 ){ pCur->eState = CURSOR_VALID; }else if( !pRoot->leaf ){ @@ -55148,7 +63828,7 @@ static int moveToLeftmost(BtCursor *pCur){ int rc = SQLITE_OK; MemPage *pPage; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState==CURSOR_VALID ); while( rc==SQLITE_OK && !(pPage = pCur->apPage[pCur->iPage])->leaf ){ assert( pCur->aiIdx[pCur->iPage]nCell ); @@ -55173,19 +63853,18 @@ static int moveToRightmost(BtCursor *pCur){ int rc = SQLITE_OK; MemPage *pPage = 0; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->eState==CURSOR_VALID ); - while( rc==SQLITE_OK && !(pPage = pCur->apPage[pCur->iPage])->leaf ){ + while( !(pPage = pCur->apPage[pCur->iPage])->leaf ){ pgno = get4byte(&pPage->aData[pPage->hdrOffset+8]); pCur->aiIdx[pCur->iPage] = pPage->nCell; rc = moveToChild(pCur, pgno); + if( rc ) return rc; } - if( rc==SQLITE_OK ){ - pCur->aiIdx[pCur->iPage] = pPage->nCell-1; - pCur->info.nSize = 0; - pCur->validNKey = 0; - } - return rc; + pCur->aiIdx[pCur->iPage] = pPage->nCell-1; + assert( pCur->info.nSize==0 ); + assert( (pCur->curFlags & BTCF_ValidNKey)==0 ); + return SQLITE_OK; } /* Move the cursor to the first entry in the table. Return SQLITE_OK @@ -55195,7 +63874,7 @@ static int moveToRightmost(BtCursor *pCur){ SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){ int rc; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); rc = moveToRoot(pCur); if( rc==SQLITE_OK ){ @@ -55218,11 +63897,11 @@ SQLITE_PRIVATE int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ int rc; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); /* If the cursor already points to the last entry, this is a no-op. */ - if( CURSOR_VALID==pCur->eState && pCur->atLast ){ + if( CURSOR_VALID==pCur->eState && (pCur->curFlags & BTCF_AtLast)!=0 ){ #ifdef SQLITE_DEBUG /* This block serves to assert() that the cursor really does point ** to the last entry in the b-tree. */ @@ -55245,7 +63924,12 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ assert( pCur->eState==CURSOR_VALID ); *pRes = 0; rc = moveToRightmost(pCur); - pCur->atLast = rc==SQLITE_OK ?1:0; + if( rc==SQLITE_OK ){ + pCur->curFlags |= BTCF_AtLast; + }else{ + pCur->curFlags &= ~BTCF_AtLast; + } + } } return rc; @@ -55278,6 +63962,8 @@ SQLITE_PRIVATE int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ ** *pRes>0 The cursor is left pointing at an entry that ** is larger than intKey/pIdxKey. ** +** For index tables, the pIdxKey->eqSeen field is set to 1 if there +** exists an entry in the table that exactly matches pIdxKey. */ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( BtCursor *pCur, /* The cursor to be moved */ @@ -55287,27 +63973,57 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( int *pRes /* Write search results here */ ){ int rc; + RecordCompare xRecordCompare; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); assert( pRes ); assert( (pIdxKey==0)==(pCur->pKeyInfo==0) ); + assert( pCur->eState!=CURSOR_VALID || (pIdxKey==0)==(pCur->curIntKey!=0) ); /* If the cursor is already positioned at the point we are trying ** to move to, then just return without doing any work */ - if( pCur->eState==CURSOR_VALID && pCur->validNKey - && pCur->apPage[0]->intKey + if( pIdxKey==0 + && pCur->eState==CURSOR_VALID && (pCur->curFlags & BTCF_ValidNKey)!=0 ){ if( pCur->info.nKey==intKey ){ *pRes = 0; return SQLITE_OK; } - if( pCur->atLast && pCur->info.nKeyinfo.nKeycurFlags & BTCF_AtLast)!=0 ){ + *pRes = -1; + return SQLITE_OK; + } + /* If the requested key is one more than the previous key, then + ** try to get there using sqlite3BtreeNext() rather than a full + ** binary search. This is an optimization only. The correct answer + ** is still obtained without this ase, only a little more slowely */ + if( pCur->info.nKey+1==intKey && !pCur->skipNext ){ + *pRes = 0; + rc = sqlite3BtreeNext(pCur, pRes); + if( rc ) return rc; + if( *pRes==0 ){ + getCellInfo(pCur); + if( pCur->info.nKey==intKey ){ + return SQLITE_OK; + } + } + } } } + if( pIdxKey ){ + xRecordCompare = sqlite3VdbeFindCompare(pIdxKey); + pIdxKey->errCode = 0; + assert( pIdxKey->default_rc==1 + || pIdxKey->default_rc==0 + || pIdxKey->default_rc==-1 + ); + }else{ + xRecordCompare = 0; /* All keys are integers */ + } + rc = moveToRoot(pCur); if( rc ){ return rc; @@ -55320,7 +64036,8 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 ); return SQLITE_OK; } - assert( pCur->apPage[0]->intKey || pIdxKey ); + assert( pCur->apPage[0]->intKey==pCur->curIntKey ); + assert( pCur->curIntKey || pIdxKey ); for(;;){ int lwr, upr, idx, c; Pgno chldPg; @@ -55340,11 +64057,11 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( assert( biasRight==0 || biasRight==1 ); idx = upr>>(1-biasRight); /* idx = biasRight ? upr : (lwr+upr)/2; */ pCur->aiIdx[pCur->iPage] = (u16)idx; - if( pPage->intKey ){ + if( xRecordCompare==0 ){ for(;;){ i64 nCellKey; - pCell = findCell(pPage, idx) + pPage->childPtrSize; - if( pPage->hasData ){ + pCell = findCellPastPtr(pPage, idx); + if( pPage->intKeyLeaf ){ while( 0x80 <= *(pCell++) ){ if( pCell>=pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT; } @@ -55358,16 +64075,16 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( if( lwr>upr ){ c = +1; break; } }else{ assert( nCellKey==intKey ); - pCur->validNKey = 1; - pCur->info.nKey = nCellKey; pCur->aiIdx[pCur->iPage] = (u16)idx; if( !pPage->leaf ){ lwr = idx; goto moveto_next_layer; }else{ + pCur->curFlags |= BTCF_ValidNKey; + pCur->info.nKey = nCellKey; + pCur->info.nSize = 0; *pRes = 0; - rc = SQLITE_OK; - goto moveto_finish; + return SQLITE_OK; } } assert( lwr+upr>=0 ); @@ -55375,8 +64092,8 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( } }else{ for(;;){ - int nCell; - pCell = findCell(pPage, idx) + pPage->childPtrSize; + int nCell; /* Size of the pCell cell in bytes */ + pCell = findCellPastPtr(pPage, idx); /* The maximum supported page-size is 65536 bytes. This means that ** the maximum number of record bytes stored on an index B-Tree @@ -55392,37 +64109,55 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( ** single byte varint and the record fits entirely on the main ** b-tree page. */ testcase( pCell+nCell+1==pPage->aDataEnd ); - c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[1], pIdxKey); + c = xRecordCompare(nCell, (void*)&pCell[1], pIdxKey); }else if( !(pCell[1] & 0x80) && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal ){ /* The record-size field is a 2 byte varint and the record ** fits entirely on the main b-tree page. */ testcase( pCell+nCell+2==pPage->aDataEnd ); - c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[2], pIdxKey); + c = xRecordCompare(nCell, (void*)&pCell[2], pIdxKey); }else{ /* The record flows over onto one or more overflow pages. In ** this case the whole cell needs to be parsed, a buffer allocated ** and accessPayload() used to retrieve the record into the - ** buffer before VdbeRecordCompare() can be called. */ + ** buffer before VdbeRecordCompare() can be called. + ** + ** If the record is corrupt, the xRecordCompare routine may read + ** up to two varints past the end of the buffer. An extra 18 + ** bytes of padding is allocated at the end of the buffer in + ** case this happens. */ void *pCellKey; u8 * const pCellBody = pCell - pPage->childPtrSize; - btreeParseCellPtr(pPage, pCellBody, &pCur->info); + pPage->xParseCell(pPage, pCellBody, &pCur->info); nCell = (int)pCur->info.nKey; - pCellKey = sqlite3Malloc( nCell ); + testcase( nCell<0 ); /* True if key size is 2^32 or more */ + testcase( nCell==0 ); /* Invalid key size: 0x80 0x80 0x00 */ + testcase( nCell==1 ); /* Invalid key size: 0x80 0x80 0x01 */ + testcase( nCell==2 ); /* Minimum legal index key size */ + if( nCell<2 ){ + rc = SQLITE_CORRUPT_BKPT; + goto moveto_finish; + } + pCellKey = sqlite3Malloc( nCell+18 ); if( pCellKey==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto moveto_finish; } pCur->aiIdx[pCur->iPage] = (u16)idx; rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0); + pCur->curFlags &= ~BTCF_ValidOvfl; if( rc ){ sqlite3_free(pCellKey); goto moveto_finish; } - c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey); + c = xRecordCompare(nCell, pCellKey, pIdxKey); sqlite3_free(pCellKey); } + assert( + (pIdxKey->errCode!=SQLITE_CORRUPT || c==0) + && (pIdxKey->errCode!=SQLITE_NOMEM || pCur->pBtree->db->mallocFailed) + ); if( c<0 ){ lwr = idx+1; }else if( c>0 ){ @@ -55432,6 +64167,7 @@ SQLITE_PRIVATE int sqlite3BtreeMovetoUnpacked( *pRes = 0; rc = SQLITE_OK; pCur->aiIdx[pCur->iPage] = (u16)idx; + if( pIdxKey->errCode ) rc = SQLITE_CORRUPT; goto moveto_finish; } if( lwr>upr ) break; @@ -55460,7 +64196,7 @@ moveto_next_layer: } moveto_finish: pCur->info.nSize = 0; - pCur->validNKey = 0; + assert( (pCur->curFlags & BTCF_ValidOvfl)==0 ); return rc; } @@ -55485,19 +64221,34 @@ SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor *pCur){ ** successful then set *pRes=0. If the cursor ** was already pointing to the last entry in the database before ** this routine was called, then set *pRes=1. +** +** The main entry point is sqlite3BtreeNext(). That routine is optimized +** for the common case of merely incrementing the cell counter BtCursor.aiIdx +** to the next cell on the current page. The (slower) btreeNext() helper +** routine is called when it is necessary to move to a different page or +** to restore the cursor. +** +** The calling function will set *pRes to 0 or 1. The initial *pRes value +** will be 1 if the cursor being stepped corresponds to an SQL index and +** if this routine could have been skipped if that SQL index had been +** a unique index. Otherwise the caller will have set *pRes to zero. +** Zero is the common case. The btree implementation is free to use the +** initial *pRes value as a hint to improve performance, but the current +** SQLite btree implementation does not. (Note that the comdb2 btree +** implementation does use this hint, however.) */ -SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ +static SQLITE_NOINLINE int btreeNext(BtCursor *pCur, int *pRes){ int rc; int idx; MemPage *pPage; - assert( cursorHoldsMutex(pCur) ); - assert( pRes!=0 ); + assert( cursorOwnsBtShared(pCur) ); assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); + assert( *pRes==0 ); if( pCur->eState!=CURSOR_VALID ){ + assert( (pCur->curFlags & BTCF_ValidOvfl)==0 ); rc = restoreCursorPosition(pCur); if( rc!=SQLITE_OK ){ - *pRes = 0; return rc; } if( CURSOR_INVALID==pCur->eState ){ @@ -55509,7 +64260,6 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ pCur->eState = CURSOR_VALID; if( pCur->skipNext>0 ){ pCur->skipNext = 0; - *pRes = 0; return SQLITE_OK; } pCur->skipNext = 0; @@ -55527,18 +64277,11 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ ** page into more than one b-tree structure. */ testcase( idx>pPage->nCell ); - pCur->info.nSize = 0; - pCur->validNKey = 0; if( idx>=pPage->nCell ){ if( !pPage->leaf ){ rc = moveToChild(pCur, get4byte(&pPage->aData[pPage->hdrOffset+8])); - if( rc ){ - *pRes = 0; - return rc; - } - rc = moveToLeftmost(pCur); - *pRes = 0; - return rc; + if( rc ) return rc; + return moveToLeftmost(pCur); } do{ if( pCur->iPage==0 ){ @@ -55549,44 +64292,75 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ moveToParent(pCur); pPage = pCur->apPage[pCur->iPage]; }while( pCur->aiIdx[pCur->iPage]>=pPage->nCell ); - *pRes = 0; if( pPage->intKey ){ - rc = sqlite3BtreeNext(pCur, pRes); + return sqlite3BtreeNext(pCur, pRes); }else{ - rc = SQLITE_OK; + return SQLITE_OK; } - return rc; } - *pRes = 0; if( pPage->leaf ){ return SQLITE_OK; + }else{ + return moveToLeftmost(pCur); + } +} +SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ + MemPage *pPage; + assert( cursorOwnsBtShared(pCur) ); + assert( pRes!=0 ); + assert( *pRes==0 || *pRes==1 ); + assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); + pCur->info.nSize = 0; + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl); + *pRes = 0; + if( pCur->eState!=CURSOR_VALID ) return btreeNext(pCur, pRes); + pPage = pCur->apPage[pCur->iPage]; + if( (++pCur->aiIdx[pCur->iPage])>=pPage->nCell ){ + pCur->aiIdx[pCur->iPage]--; + return btreeNext(pCur, pRes); + } + if( pPage->leaf ){ + return SQLITE_OK; + }else{ + return moveToLeftmost(pCur); } - rc = moveToLeftmost(pCur); - return rc; } - /* ** Step the cursor to the back to the previous entry in the database. If ** successful then set *pRes=0. If the cursor ** was already pointing to the first entry in the database before ** this routine was called, then set *pRes=1. +** +** The main entry point is sqlite3BtreePrevious(). That routine is optimized +** for the common case of merely decrementing the cell counter BtCursor.aiIdx +** to the previous cell on the current page. The (slower) btreePrevious() +** helper routine is called when it is necessary to move to a different page +** or to restore the cursor. +** +** The calling function will set *pRes to 0 or 1. The initial *pRes value +** will be 1 if the cursor being stepped corresponds to an SQL index and +** if this routine could have been skipped if that SQL index had been +** a unique index. Otherwise the caller will have set *pRes to zero. +** Zero is the common case. The btree implementation is free to use the +** initial *pRes value as a hint to improve performance, but the current +** SQLite btree implementation does not. (Note that the comdb2 btree +** implementation does use this hint, however.) */ -SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ +static SQLITE_NOINLINE int btreePrevious(BtCursor *pCur, int *pRes){ int rc; MemPage *pPage; - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pRes!=0 ); + assert( *pRes==0 ); assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); - pCur->atLast = 0; + assert( (pCur->curFlags & (BTCF_AtLast|BTCF_ValidOvfl|BTCF_ValidNKey))==0 ); + assert( pCur->info.nSize==0 ); if( pCur->eState!=CURSOR_VALID ){ - if( ALWAYS(pCur->eState>=CURSOR_REQUIRESEEK) ){ - rc = btreeRestoreCursorPosition(pCur); - if( rc!=SQLITE_OK ){ - *pRes = 0; - return rc; - } + rc = restoreCursorPosition(pCur); + if( rc!=SQLITE_OK ){ + return rc; } if( CURSOR_INVALID==pCur->eState ){ *pRes = 1; @@ -55597,7 +64371,6 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ pCur->eState = CURSOR_VALID; if( pCur->skipNext<0 ){ pCur->skipNext = 0; - *pRes = 0; return SQLITE_OK; } pCur->skipNext = 0; @@ -55609,10 +64382,7 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ if( !pPage->leaf ){ int idx = pCur->aiIdx[pCur->iPage]; rc = moveToChild(pCur, get4byte(findCell(pPage, idx))); - if( rc ){ - *pRes = 0; - return rc; - } + if( rc ) return rc; rc = moveToRightmost(pCur); }else{ while( pCur->aiIdx[pCur->iPage]==0 ){ @@ -55623,8 +64393,8 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ } moveToParent(pCur); } - pCur->info.nSize = 0; - pCur->validNKey = 0; + assert( pCur->info.nSize==0 ); + assert( (pCur->curFlags & (BTCF_ValidOvfl))==0 ); pCur->aiIdx[pCur->iPage]--; pPage = pCur->apPage[pCur->iPage]; @@ -55634,9 +64404,25 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ rc = SQLITE_OK; } } - *pRes = 0; return rc; } +SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ + assert( cursorOwnsBtShared(pCur) ); + assert( pRes!=0 ); + assert( *pRes==0 || *pRes==1 ); + assert( pCur->skipNext==0 || pCur->eState!=CURSOR_VALID ); + *pRes = 0; + pCur->curFlags &= ~(BTCF_AtLast|BTCF_ValidOvfl|BTCF_ValidNKey); + pCur->info.nSize = 0; + if( pCur->eState!=CURSOR_VALID + || pCur->aiIdx[pCur->iPage]==0 + || pCur->apPage[pCur->iPage]->leaf==0 + ){ + return btreePrevious(pCur, pRes); + } + pCur->aiIdx[pCur->iPage]--; + return SQLITE_OK; +} /* ** Allocate a new page from the database file. @@ -55647,8 +64433,7 @@ SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ ** sqlite3PagerUnref() on the new page when it is done. ** ** SQLITE_OK is returned on success. Any other return value indicates -** an error. *ppPage and *pPgno are undefined in the event of an error. -** Do not invoke sqlite3PagerUnref() on *ppPage if an error is returned. +** an error. *ppPage is set to NULL in the event of an error. ** ** If the "nearby" parameter is not 0, then an effort is made to ** locate a page close to the page number "nearby". This can be used in an @@ -55680,6 +64465,8 @@ static int allocateBtreePage( assert( eMode==BTALLOC_ANY || (nearby>0 && IfNotOmitAV(pBt->autoVacuum)) ); pPage1 = pBt->pPage1; mxPage = btreePagecount(pBt); + /* EVIDENCE-OF: R-05119-02637 The 4-byte big-endian integer at offset 36 + ** stores stores the total number of pages on the freelist. */ n = get4byte(&pPage1->aData[36]); testcase( n==mxPage-1 ); if( n>=mxPage ){ @@ -55689,6 +64476,7 @@ static int allocateBtreePage( /* There are pages on the freelist. Reuse one of those pages. */ Pgno iTrunk; u8 searchList = 0; /* If the free-list must be searched for 'nearby' */ + u32 nSearch = 0; /* Count of the number of search attempts */ /* If eMode==BTALLOC_EXACT and a query of the pointer-map ** shows that the page 'nearby' is somewhere on the free-list, then @@ -55726,15 +64514,21 @@ static int allocateBtreePage( do { pPrevTrunk = pTrunk; if( pPrevTrunk ){ + /* EVIDENCE-OF: R-01506-11053 The first integer on a freelist trunk page + ** is the page number of the next freelist trunk page in the list or + ** zero if this is the last freelist trunk page. */ iTrunk = get4byte(&pPrevTrunk->aData[0]); }else{ + /* EVIDENCE-OF: R-59841-13798 The 4-byte big-endian integer at offset 32 + ** stores the page number of the first page of the freelist, or zero if + ** the freelist is empty. */ iTrunk = get4byte(&pPage1->aData[32]); } testcase( iTrunk==mxPage ); - if( iTrunk>mxPage ){ + if( iTrunk>mxPage || nSearch++ > n ){ rc = SQLITE_CORRUPT_BKPT; }else{ - rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0); + rc = btreeGetUnusedPage(pBt, iTrunk, &pTrunk, 0); } if( rc ){ pTrunk = 0; @@ -55742,8 +64536,9 @@ static int allocateBtreePage( } assert( pTrunk!=0 ); assert( pTrunk->aData!=0 ); - - k = get4byte(&pTrunk->aData[4]); /* # of leaves on this trunk page */ + /* EVIDENCE-OF: R-13523-04394 The second integer on a freelist trunk page + ** is the number of leaf page pointers to follow. */ + k = get4byte(&pTrunk->aData[4]); if( k==0 && !searchList ){ /* The trunk has no leaves and the list is not being searched. ** So extract the trunk page itself and use it as the newly @@ -55798,7 +64593,7 @@ static int allocateBtreePage( goto end_allocate_page; } testcase( iNewTrunk==mxPage ); - rc = btreeGetPage(pBt, iNewTrunk, &pNewTrunk, 0); + rc = btreeGetUnusedPage(pBt, iNewTrunk, &pNewTrunk, 0); if( rc!=SQLITE_OK ){ goto end_allocate_page; } @@ -55877,12 +64672,13 @@ static int allocateBtreePage( memcpy(&aData[8+closest*4], &aData[4+k*4], 4); } put4byte(&aData[4], k-1); - noContent = !btreeGetHasContent(pBt, *pPgno) ? PAGER_GET_NOCONTENT : 0; - rc = btreeGetPage(pBt, *pPgno, ppPage, noContent); + noContent = !btreeGetHasContent(pBt, *pPgno)? PAGER_GET_NOCONTENT : 0; + rc = btreeGetUnusedPage(pBt, *pPgno, ppPage, noContent); if( rc==SQLITE_OK ){ rc = sqlite3PagerWrite((*ppPage)->pDbPage); if( rc!=SQLITE_OK ){ releasePage(*ppPage); + *ppPage = 0; } } searchList = 0; @@ -55910,7 +64706,7 @@ static int allocateBtreePage( ** here are confined to those pages that lie between the end of the ** database image and the end of the database file. */ - int bNoContent = (0==IfNotOmitAV(pBt->bDoTruncate)) ? PAGER_GET_NOCONTENT : 0; + int bNoContent = (0==IfNotOmitAV(pBt->bDoTruncate))? PAGER_GET_NOCONTENT:0; rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); if( rc ) return rc; @@ -55926,7 +64722,7 @@ static int allocateBtreePage( MemPage *pPg = 0; TRACE(("ALLOCATE: %d from end of file (pointer-map page)\n", pBt->nPage)); assert( pBt->nPage!=PENDING_BYTE_PAGE(pBt) ); - rc = btreeGetPage(pBt, pBt->nPage, &pPg, bNoContent); + rc = btreeGetUnusedPage(pBt, pBt->nPage, &pPg, bNoContent); if( rc==SQLITE_OK ){ rc = sqlite3PagerWrite(pPg->pDbPage); releasePage(pPg); @@ -55940,11 +64736,12 @@ static int allocateBtreePage( *pPgno = pBt->nPage; assert( *pPgno!=PENDING_BYTE_PAGE(pBt) ); - rc = btreeGetPage(pBt, *pPgno, ppPage, bNoContent); + rc = btreeGetUnusedPage(pBt, *pPgno, ppPage, bNoContent); if( rc ) return rc; rc = sqlite3PagerWrite((*ppPage)->pDbPage); if( rc!=SQLITE_OK ){ releasePage(*ppPage); + *ppPage = 0; } TRACE(("ALLOCATE: %d from end of file\n", *pPgno)); } @@ -55954,17 +64751,8 @@ static int allocateBtreePage( end_allocate_page: releasePage(pTrunk); releasePage(pPrevTrunk); - if( rc==SQLITE_OK ){ - if( sqlite3PagerPageRefcount((*ppPage)->pDbPage)>1 ){ - releasePage(*ppPage); - *ppPage = 0; - return SQLITE_CORRUPT_BKPT; - } - (*ppPage)->isInit = 0; - }else{ - *ppPage = 0; - } - assert( rc!=SQLITE_OK || sqlite3PagerIswriteable((*ppPage)->pDbPage) ); + assert( rc!=SQLITE_OK || sqlite3PagerPageRefcount((*ppPage)->pDbPage)<=1 ); + assert( rc!=SQLITE_OK || (*ppPage)->isInit==0 ); return rc; } @@ -55989,9 +64777,10 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ int nFree; /* Initial number of pages on free-list */ assert( sqlite3_mutex_held(pBt->mutex) ); - assert( iPage>1 ); + assert( CORRUPT_DB || iPage>1 ); assert( !pMemPage || pMemPage->pgno==iPage ); + if( iPage<2 ) return SQLITE_CORRUPT_BKPT; if( pMemPage ){ pPage = pMemPage; sqlite3PagerRef(pPage->pDbPage); @@ -56061,6 +64850,11 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ ** for now. At some point in the future (once everyone has upgraded ** to 3.6.0 or later) we should consider fixing the conditional above ** to read "usableSize/4-2" instead of "usableSize/4-8". + ** + ** EVIDENCE-OF: R-19920-11576 However, newer versions of SQLite still + ** avoid using the last six entries in the freelist trunk page array in + ** order that database files created by newer versions of SQLite can be + ** read by older versions of SQLite. */ rc = sqlite3PagerWrite(pTrunk->pDbPage); if( rc==SQLITE_OK ){ @@ -56109,29 +64903,36 @@ static void freePage(MemPage *pPage, int *pRC){ } /* -** Free any overflow pages associated with the given Cell. +** Free any overflow pages associated with the given Cell. Write the +** local Cell size (the number of bytes on the original page, omitting +** overflow) into *pnSize. */ -static int clearCell(MemPage *pPage, unsigned char *pCell){ +static int clearCell( + MemPage *pPage, /* The page that contains the Cell */ + unsigned char *pCell, /* First byte of the Cell */ + CellInfo *pInfo /* Size information about the cell */ +){ BtShared *pBt = pPage->pBt; - CellInfo info; Pgno ovflPgno; int rc; int nOvfl; u32 ovflPageSize; assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - btreeParseCellPtr(pPage, pCell, &info); - if( info.iOverflow==0 ){ + pPage->xParseCell(pPage, pCell, pInfo); + if( pInfo->nLocal==pInfo->nPayload ){ return SQLITE_OK; /* No overflow pages. Return without doing anything */ } - if( pCell+info.iOverflow+3 > pPage->aData+pPage->maskPage ){ + if( pCell+pInfo->nSize-1 > pPage->aData+pPage->maskPage ){ return SQLITE_CORRUPT_BKPT; /* Cell extends past end of page */ } - ovflPgno = get4byte(&pCell[info.iOverflow]); + ovflPgno = get4byte(pCell + pInfo->nSize - 4); assert( pBt->usableSize > 4 ); ovflPageSize = pBt->usableSize - 4; - nOvfl = (info.nPayload - info.nLocal + ovflPageSize - 1)/ovflPageSize; - assert( ovflPgno==0 || nOvfl>0 ); + nOvfl = (pInfo->nPayload - pInfo->nLocal + ovflPageSize - 1)/ovflPageSize; + assert( nOvfl>0 || + (CORRUPT_DB && (pInfo->nPayload + ovflPageSize)pBt; Pgno pgnoOvfl = 0; int nHeader; - CellInfo info; assert( sqlite3_mutex_held(pPage->pBt->mutex) ); @@ -56214,40 +65012,66 @@ static int fillInCell( || sqlite3PagerIswriteable(pPage->pDbPage) ); /* Fill in the header. */ - nHeader = 0; - if( !pPage->leaf ){ - nHeader += 4; - } - if( pPage->hasData ){ - nHeader += putVarint32(&pCell[nHeader], nData+nZero); + nHeader = pPage->childPtrSize; + if( pPage->intKey ){ + nPayload = pX->nData + pX->nZero; + pSrc = pX->pData; + nSrc = pX->nData; + assert( pPage->intKeyLeaf ); /* fillInCell() only called for leaves */ + nHeader += putVarint32(&pCell[nHeader], nPayload); + nHeader += putVarint(&pCell[nHeader], *(u64*)&pX->nKey); }else{ - nData = nZero = 0; + assert( pX->nKey<=0x7fffffff && pX->pKey!=0 ); + nSrc = nPayload = (int)pX->nKey; + pSrc = pX->pKey; + nHeader += putVarint32(&pCell[nHeader], nPayload); } - nHeader += putVarint(&pCell[nHeader], *(u64*)&nKey); - btreeParseCellPtr(pPage, pCell, &info); - assert( info.nHeader==nHeader ); - assert( info.nKey==nKey ); - assert( info.nData==(u32)(nData+nZero) ); /* Fill in the payload */ - nPayload = nData + nZero; - if( pPage->intKey ){ - pSrc = pData; - nSrc = nData; - nData = 0; - }else{ - if( NEVER(nKey>0x7fffffff || pKey==0) ){ - return SQLITE_CORRUPT_BKPT; - } - nPayload += (int)nKey; - pSrc = pKey; - nSrc = (int)nKey; + if( nPayload<=pPage->maxLocal ){ + n = nHeader + nPayload; + testcase( n==3 ); + testcase( n==4 ); + if( n<4 ) n = 4; + *pnSize = n; + spaceLeft = nPayload; + pPrior = pCell; + }else{ + int mn = pPage->minLocal; + n = mn + (nPayload - mn) % (pPage->pBt->usableSize - 4); + testcase( n==pPage->maxLocal ); + testcase( n==pPage->maxLocal+1 ); + if( n > pPage->maxLocal ) n = mn; + spaceLeft = n; + *pnSize = n + nHeader + 4; + pPrior = &pCell[nHeader+n]; } - *pnSize = info.nSize; - spaceLeft = info.nLocal; pPayload = &pCell[nHeader]; - pPrior = &pCell[info.iOverflow]; + /* At this point variables should be set as follows: + ** + ** nPayload Total payload size in bytes + ** pPayload Begin writing payload here + ** spaceLeft Space available at pPayload. If nPayload>spaceLeft, + ** that means content must spill into overflow pages. + ** *pnSize Size of the local cell (not counting overflow pages) + ** pPrior Where to write the pgno of the first overflow page + ** + ** Use a call to btreeParseCellPtr() to verify that the values above + ** were computed correctly. + */ +#if SQLITE_DEBUG + { + CellInfo info; + pPage->xParseCell(pPage, pCell, &info); + assert( nHeader==(int)(info.pPayload - pCell) ); + assert( info.nKey==pX->nKey ); + assert( *pnSize == info.nSize ); + assert( spaceLeft == info.nLocal ); + } +#endif + + /* Write the payload into the local Cell and any extra into overflow pages */ while( nPayload>0 ){ if( spaceLeft==0 ){ #ifndef SQLITE_OMIT_AUTOVACUUM @@ -56326,10 +65150,6 @@ static int fillInCell( pSrc += n; nSrc -= n; spaceLeft -= n; - if( nSrc==0 ){ - nSrc = nData; - pSrc = pData; - } } releasePage(pToRelease); return SQLITE_OK; @@ -56351,9 +65171,8 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ int hdr; /* Beginning of the header. 0 most pages. 100 page 1 */ if( *pRC ) return; - assert( idx>=0 && idxnCell ); - assert( sz==cellSize(pPage, idx) ); + assert( CORRUPT_DB || sz==cellSize(pPage, idx) ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); data = pPage->aData; @@ -56372,9 +65191,17 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ return; } pPage->nCell--; - memmove(ptr, ptr+2, 2*(pPage->nCell - idx)); - put2byte(&data[hdr+3], pPage->nCell); - pPage->nFree += 2; + if( pPage->nCell==0 ){ + memset(&data[hdr+1], 0, 4); + data[hdr+7] = 0; + put2byte(&data[hdr+5], pPage->pBt->usableSize); + pPage->nFree = pPage->pBt->usableSize - pPage->hdrOffset + - pPage->childPtrSize - 8; + }else{ + memmove(ptr, ptr+2, 2*(pPage->nCell - idx)); + put2byte(&data[hdr+3], pPage->nCell); + pPage->nFree += 2; + } } /* @@ -56389,10 +65216,7 @@ static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ ** Allocating a new entry in pPage->aCell[] implies that ** pPage->nOverflow is incremented. ** -** If nSkip is non-zero, then do not copy the first nSkip bytes of the -** cell. The caller will overwrite them after this function returns. If -** nSkip is non-zero, then pCell may not point to an invalid memory location -** (but pCell+nSkip is always valid). +** *pRC must be SQLITE_OK when this routine is called. */ static void insertCell( MemPage *pPage, /* Page into which we are copying */ @@ -56405,16 +65229,13 @@ static void insertCell( ){ int idx = 0; /* Where to write new cell content in data[] */ int j; /* Loop counter */ - int end; /* First byte past the last cell pointer in data[] */ - int ins; /* Index in data[] where new cell pointer is inserted */ - int cellOffset; /* Address of first cell pointer in data[] */ u8 *data; /* The content of the whole page */ - int nSkip = (iChild ? 4 : 0); - - if( *pRC ) return; + u8 *pIns; /* The point in pPage->aCellIdx[] where no cell inserted */ + assert( *pRC==SQLITE_OK ); assert( i>=0 && i<=pPage->nCell+pPage->nOverflow ); - assert( pPage->nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=10921 ); + assert( MX_CELL(pPage->pBt)<=10921 ); + assert( pPage->nCell<=MX_CELL(pPage->pBt) || CORRUPT_DB ); assert( pPage->nOverflow<=ArraySize(pPage->apOvfl) ); assert( ArraySize(pPage->apOvfl)==ArraySize(pPage->aiOvfl) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); @@ -56423,19 +65244,30 @@ static void insertCell( ** wanted to be less than 4 but got rounded up to 4 on the leaf, then size ** might be less than 8 (leaf-size + pointer) on the interior node. Hence ** the term after the || in the following assert(). */ - assert( sz==cellSizePtr(pPage, pCell) || (sz==8 && iChild>0) ); + assert( sz==pPage->xCellSize(pPage, pCell) || (sz==8 && iChild>0) ); if( pPage->nOverflow || sz+2>pPage->nFree ){ if( pTemp ){ - memcpy(pTemp+nSkip, pCell+nSkip, sz-nSkip); + memcpy(pTemp, pCell, sz); pCell = pTemp; } if( iChild ){ put4byte(pCell, iChild); } j = pPage->nOverflow++; - assert( j<(int)(sizeof(pPage->apOvfl)/sizeof(pPage->apOvfl[0])) ); + /* Comparison against ArraySize-1 since we hold back one extra slot + ** as a contingency. In other words, never need more than 3 overflow + ** slots but 4 are allocated, just to be safe. */ + assert( j < ArraySize(pPage->apOvfl)-1 ); pPage->apOvfl[j] = pCell; pPage->aiOvfl[j] = (u16)i; + + /* When multiple overflows occur, they are always sequential and in + ** sorted order. This invariants arise because multiple overflows can + ** only occur when inserting divider cells into the parent page during + ** balancing, and the dividers are adjacent and sorted. + */ + assert( j==0 || pPage->aiOvfl[j-1]<(u16)i ); /* Overflows in sorted order */ + assert( j==0 || i==pPage->aiOvfl[j-1]+1 ); /* Overflows are sequential */ }else{ int rc = sqlite3PagerWrite(pPage->pDbPage); if( rc!=SQLITE_OK ){ @@ -56444,24 +65276,26 @@ static void insertCell( } assert( sqlite3PagerIswriteable(pPage->pDbPage) ); data = pPage->aData; - cellOffset = pPage->cellOffset; - end = cellOffset + 2*pPage->nCell; - ins = cellOffset + 2*i; + assert( &data[pPage->cellOffset]==pPage->aCellIdx ); rc = allocateSpace(pPage, sz, &idx); if( rc ){ *pRC = rc; return; } - /* The allocateSpace() routine guarantees the following two properties - ** if it returns success */ - assert( idx >= end+2 ); + /* The allocateSpace() routine guarantees the following properties + ** if it returns successfully */ + assert( idx >= 0 ); + assert( idx >= pPage->cellOffset+2*pPage->nCell+2 || CORRUPT_DB ); assert( idx+sz <= (int)pPage->pBt->usableSize ); - pPage->nCell++; pPage->nFree -= (u16)(2 + sz); - memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip); + memcpy(&data[idx], pCell, sz); if( iChild ){ put4byte(&data[idx], iChild); } - memmove(&data[ins+2], &data[ins], end-ins); - put2byte(&data[ins], idx); - put2byte(&data[pPage->hdrOffset+3], pPage->nCell); + pIns = pPage->aCellIdx + i*2; + memmove(pIns+2, pIns, 2*(pPage->nCell - i)); + put2byte(pIns, idx); + pPage->nCell++; + /* increment the cell count */ + if( (++data[pPage->hdrOffset+4])==0 ) data[pPage->hdrOffset+3]++; + assert( get2byte(&data[pPage->hdrOffset+3])==pPage->nCell ); #ifndef SQLITE_OMIT_AUTOVACUUM if( pPage->pBt->autoVacuum ){ /* The cell may contain a pointer to an overflow page. If so, write @@ -56474,45 +65308,328 @@ static void insertCell( } /* -** Add a list of cells to a page. The page should be initially empty. -** The cells are guaranteed to fit on the page. +** A CellArray object contains a cache of pointers and sizes for a +** consecutive sequence of cells that might be held on multiple pages. */ -static void assemblePage( - MemPage *pPage, /* The page to be assemblied */ - int nCell, /* The number of cells to add to this page */ - u8 **apCell, /* Pointers to cell bodies */ - u16 *aSize /* Sizes of the cells */ -){ - int i; /* Loop counter */ - u8 *pCellptr; /* Address of next cell pointer */ - int cellbody; /* Address of next cell body */ - u8 * const data = pPage->aData; /* Pointer to data for pPage */ - const int hdr = pPage->hdrOffset; /* Offset of header on pPage */ - const int nUsable = pPage->pBt->usableSize; /* Usable size of page */ +typedef struct CellArray CellArray; +struct CellArray { + int nCell; /* Number of cells in apCell[] */ + MemPage *pRef; /* Reference page */ + u8 **apCell; /* All cells begin balanced */ + u16 *szCell; /* Local size of all cells in apCell[] */ +}; - assert( pPage->nOverflow==0 ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( nCell>=0 && nCell<=(int)MX_CELL(pPage->pBt) - && (int)MX_CELL(pPage->pBt)<=10921); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - - /* Check that the page has just been zeroed by zeroPage() */ - assert( pPage->nCell==0 ); - assert( get2byteNotZero(&data[hdr+5])==nUsable ); - - pCellptr = &pPage->aCellIdx[nCell*2]; - cellbody = nUsable; - for(i=nCell-1; i>=0; i--){ - u16 sz = aSize[i]; - pCellptr -= 2; - cellbody -= sz; - put2byte(pCellptr, cellbody); - memcpy(&data[cellbody], apCell[i], sz); +/* +** Make sure the cell sizes at idx, idx+1, ..., idx+N-1 have been +** computed. +*/ +static void populateCellCache(CellArray *p, int idx, int N){ + assert( idx>=0 && idx+N<=p->nCell ); + while( N>0 ){ + assert( p->apCell[idx]!=0 ); + if( p->szCell[idx]==0 ){ + p->szCell[idx] = p->pRef->xCellSize(p->pRef, p->apCell[idx]); + }else{ + assert( CORRUPT_DB || + p->szCell[idx]==p->pRef->xCellSize(p->pRef, p->apCell[idx]) ); + } + idx++; + N--; } - put2byte(&data[hdr+3], nCell); - put2byte(&data[hdr+5], cellbody); - pPage->nFree -= (nCell*2 + nUsable - cellbody); - pPage->nCell = (u16)nCell; +} + +/* +** Return the size of the Nth element of the cell array +*/ +static SQLITE_NOINLINE u16 computeCellSize(CellArray *p, int N){ + assert( N>=0 && NnCell ); + assert( p->szCell[N]==0 ); + p->szCell[N] = p->pRef->xCellSize(p->pRef, p->apCell[N]); + return p->szCell[N]; +} +static u16 cachedCellSize(CellArray *p, int N){ + assert( N>=0 && NnCell ); + if( p->szCell[N] ) return p->szCell[N]; + return computeCellSize(p, N); +} + +/* +** Array apCell[] contains pointers to nCell b-tree page cells. The +** szCell[] array contains the size in bytes of each cell. This function +** replaces the current contents of page pPg with the contents of the cell +** array. +** +** Some of the cells in apCell[] may currently be stored in pPg. This +** function works around problems caused by this by making a copy of any +** such cells before overwriting the page data. +** +** The MemPage.nFree field is invalidated by this function. It is the +** responsibility of the caller to set it correctly. +*/ +static int rebuildPage( + MemPage *pPg, /* Edit this page */ + int nCell, /* Final number of cells on page */ + u8 **apCell, /* Array of cells */ + u16 *szCell /* Array of cell sizes */ +){ + const int hdr = pPg->hdrOffset; /* Offset of header on pPg */ + u8 * const aData = pPg->aData; /* Pointer to data for pPg */ + const int usableSize = pPg->pBt->usableSize; + u8 * const pEnd = &aData[usableSize]; + int i; + u8 *pCellptr = pPg->aCellIdx; + u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager); + u8 *pData; + + i = get2byte(&aData[hdr+5]); + memcpy(&pTmp[i], &aData[i], usableSize - i); + + pData = pEnd; + for(i=0; ixCellSize(pPg, pCell) || CORRUPT_DB ); + testcase( szCell[i]!=pPg->xCellSize(pPg,pCell) ); + } + + /* The pPg->nFree field is now set incorrectly. The caller will fix it. */ + pPg->nCell = nCell; + pPg->nOverflow = 0; + + put2byte(&aData[hdr+1], 0); + put2byte(&aData[hdr+3], pPg->nCell); + put2byte(&aData[hdr+5], pData - aData); + aData[hdr+7] = 0x00; + return SQLITE_OK; +} + +/* +** Array apCell[] contains nCell pointers to b-tree cells. Array szCell +** contains the size in bytes of each such cell. This function attempts to +** add the cells stored in the array to page pPg. If it cannot (because +** the page needs to be defragmented before the cells will fit), non-zero +** is returned. Otherwise, if the cells are added successfully, zero is +** returned. +** +** Argument pCellptr points to the first entry in the cell-pointer array +** (part of page pPg) to populate. After cell apCell[0] is written to the +** page body, a 16-bit offset is written to pCellptr. And so on, for each +** cell in the array. It is the responsibility of the caller to ensure +** that it is safe to overwrite this part of the cell-pointer array. +** +** When this function is called, *ppData points to the start of the +** content area on page pPg. If the size of the content area is extended, +** *ppData is updated to point to the new start of the content area +** before returning. +** +** Finally, argument pBegin points to the byte immediately following the +** end of the space required by this page for the cell-pointer area (for +** all cells - not just those inserted by the current call). If the content +** area must be extended to before this point in order to accomodate all +** cells in apCell[], then the cells do not fit and non-zero is returned. +*/ +static int pageInsertArray( + MemPage *pPg, /* Page to add cells to */ + u8 *pBegin, /* End of cell-pointer array */ + u8 **ppData, /* IN/OUT: Page content -area pointer */ + u8 *pCellptr, /* Pointer to cell-pointer area */ + int iFirst, /* Index of first cell to add */ + int nCell, /* Number of cells to add to pPg */ + CellArray *pCArray /* Array of cells */ +){ + int i; + u8 *aData = pPg->aData; + u8 *pData = *ppData; + int iEnd = iFirst + nCell; + assert( CORRUPT_DB || pPg->hdrOffset==0 ); /* Never called on page 1 */ + for(i=iFirst; iapCell[i] will never overlap on a well-formed + ** database. But they might for a corrupt database. Hence use memmove() + ** since memcpy() sends SIGABORT with overlapping buffers on OpenBSD */ + assert( (pSlot+sz)<=pCArray->apCell[i] + || pSlot>=(pCArray->apCell[i]+sz) + || CORRUPT_DB ); + memmove(pSlot, pCArray->apCell[i], sz); + put2byte(pCellptr, (pSlot - aData)); + pCellptr += 2; + } + *ppData = pData; + return 0; +} + +/* +** Array apCell[] contains nCell pointers to b-tree cells. Array szCell +** contains the size in bytes of each such cell. This function adds the +** space associated with each cell in the array that is currently stored +** within the body of pPg to the pPg free-list. The cell-pointers and other +** fields of the page are not updated. +** +** This function returns the total number of cells added to the free-list. +*/ +static int pageFreeArray( + MemPage *pPg, /* Page to edit */ + int iFirst, /* First cell to delete */ + int nCell, /* Cells to delete */ + CellArray *pCArray /* Array of cells */ +){ + u8 * const aData = pPg->aData; + u8 * const pEnd = &aData[pPg->pBt->usableSize]; + u8 * const pStart = &aData[pPg->hdrOffset + 8 + pPg->childPtrSize]; + int nRet = 0; + int i; + int iEnd = iFirst + nCell; + u8 *pFree = 0; + int szFree = 0; + + for(i=iFirst; iapCell[i]; + if( SQLITE_WITHIN(pCell, pStart, pEnd) ){ + int sz; + /* No need to use cachedCellSize() here. The sizes of all cells that + ** are to be freed have already been computing while deciding which + ** cells need freeing */ + sz = pCArray->szCell[i]; assert( sz>0 ); + if( pFree!=(pCell + sz) ){ + if( pFree ){ + assert( pFree>aData && (pFree - aData)<65536 ); + freeSpace(pPg, (u16)(pFree - aData), szFree); + } + pFree = pCell; + szFree = sz; + if( pFree+sz>pEnd ) return 0; + }else{ + pFree = pCell; + szFree += sz; + } + nRet++; + } + } + if( pFree ){ + assert( pFree>aData && (pFree - aData)<65536 ); + freeSpace(pPg, (u16)(pFree - aData), szFree); + } + return nRet; +} + +/* +** apCell[] and szCell[] contains pointers to and sizes of all cells in the +** pages being balanced. The current page, pPg, has pPg->nCell cells starting +** with apCell[iOld]. After balancing, this page should hold nNew cells +** starting at apCell[iNew]. +** +** This routine makes the necessary adjustments to pPg so that it contains +** the correct cells after being balanced. +** +** The pPg->nFree field is invalid when this function returns. It is the +** responsibility of the caller to set it correctly. +*/ +static int editPage( + MemPage *pPg, /* Edit this page */ + int iOld, /* Index of first cell currently on page */ + int iNew, /* Index of new first cell on page */ + int nNew, /* Final number of cells on page */ + CellArray *pCArray /* Array of cells and sizes */ +){ + u8 * const aData = pPg->aData; + const int hdr = pPg->hdrOffset; + u8 *pBegin = &pPg->aCellIdx[nNew * 2]; + int nCell = pPg->nCell; /* Cells stored on pPg */ + u8 *pData; + u8 *pCellptr; + int i; + int iOldEnd = iOld + pPg->nCell + pPg->nOverflow; + int iNewEnd = iNew + nNew; + +#ifdef SQLITE_DEBUG + u8 *pTmp = sqlite3PagerTempSpace(pPg->pBt->pPager); + memcpy(pTmp, aData, pPg->pBt->usableSize); +#endif + + /* Remove cells from the start and end of the page */ + if( iOldaCellIdx, &pPg->aCellIdx[nShift*2], nCell*2); + nCell -= nShift; + } + if( iNewEnd < iOldEnd ){ + nCell -= pageFreeArray(pPg, iNewEnd, iOldEnd - iNewEnd, pCArray); + } + + pData = &aData[get2byteNotZero(&aData[hdr+5])]; + if( pDataaCellIdx; + memmove(&pCellptr[nAdd*2], pCellptr, nCell*2); + if( pageInsertArray( + pPg, pBegin, &pData, pCellptr, + iNew, nAdd, pCArray + ) ) goto editpage_fail; + nCell += nAdd; + } + + /* Add any overflow cells */ + for(i=0; inOverflow; i++){ + int iCell = (iOld + pPg->aiOvfl[i]) - iNew; + if( iCell>=0 && iCellaCellIdx[iCell * 2]; + memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2); + nCell++; + if( pageInsertArray( + pPg, pBegin, &pData, pCellptr, + iCell+iNew, 1, pCArray + ) ) goto editpage_fail; + } + } + + /* Append cells to the end of the page */ + pCellptr = &pPg->aCellIdx[nCell*2]; + if( pageInsertArray( + pPg, pBegin, &pData, pCellptr, + iNew+nCell, nNew-nCell, pCArray + ) ) goto editpage_fail; + + pPg->nCell = nNew; + pPg->nOverflow = 0; + + put2byte(&aData[hdr+3], pPg->nCell); + put2byte(&aData[hdr+5], pData - aData); + +#ifdef SQLITE_DEBUG + for(i=0; iapCell[i+iNew]; + int iOff = get2byteAligned(&pPg->aCellIdx[i*2]); + if( SQLITE_WITHIN(pCell, aData, &aData[pPg->pBt->usableSize]) ){ + pCell = &pTmp[pCell - aData]; + } + assert( 0==memcmp(pCell, &aData[iOff], + pCArray->pRef->xCellSize(pCArray->pRef, pCArray->apCell[i+iNew])) ); + } +#endif + + return SQLITE_OK; + editpage_fail: + /* Unable to edit this page. Rebuild it from scratch instead. */ + populateCellCache(pCArray, iNew, nNew); + return rebuildPage(pPg, nNew, &pCArray->apCell[iNew], &pCArray->szCell[iNew]); } /* @@ -56566,7 +65683,7 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ assert( pPage->nOverflow==1 ); /* This error condition is now caught prior to reaching this function */ - if( pPage->nCell==0 ) return SQLITE_CORRUPT_BKPT; + if( NEVER(pPage->nCell==0) ) return SQLITE_CORRUPT_BKPT; /* Allocate a new page. This page will become the right-sibling of ** pPage. Make the parent page writable, so that the new divider cell @@ -56578,13 +65695,15 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ u8 *pOut = &pSpace[4]; u8 *pCell = pPage->apOvfl[0]; - u16 szCell = cellSizePtr(pPage, pCell); + u16 szCell = pPage->xCellSize(pPage, pCell); u8 *pStop; assert( sqlite3PagerIswriteable(pNew->pDbPage) ); assert( pPage->aData[0]==(PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF) ); zeroPage(pNew, PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF); - assemblePage(pNew, 1, &pCell, &szCell); + rc = rebuildPage(pNew, 1, &pCell, &szCell); + if( NEVER(rc) ) return rc; + pNew->nFree = pBt->usableSize - pNew->cellOffset - 2 - szCell; /* If this is an auto-vacuum database, update the pointer map ** with entries for the new page, and any pointer from the @@ -56622,8 +65741,10 @@ static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ while( ((*(pOut++) = *(pCell++))&0x80) && pCellnCell, pSpace, (int)(pOut-pSpace), - 0, pPage->pgno, &rc); + if( rc==SQLITE_OK ){ + insertCell(pParent, pParent->nCell, pSpace, (int)(pOut-pSpace), + 0, pPage->pgno, &rc); + } /* Set the right-child pointer of pParent to point to the new page. */ put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew); @@ -56656,9 +65777,9 @@ static int ptrmapCheckPages(MemPage **apPage, int nPage){ u8 *z; z = findCell(pPage, j); - btreeParseCellPtr(pPage, z, &info); - if( info.iOverflow ){ - Pgno ovfl = get4byte(&z[info.iOverflow]); + pPage->xParseCell(pPage, z, &info); + if( info.nLocalpgno && e==PTRMAP_OVERFLOW1 ); } @@ -56776,9 +65897,6 @@ static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){ ** If aOvflSpace is set to a null pointer, this function returns ** SQLITE_NOMEM. */ -#if defined(_MSC_VER) && _MSC_VER >= 1700 && defined(_M_ARM) -#pragma optimize("", off) -#endif static int balance_nonroot( MemPage *pParent, /* Parent page of siblings being balanced */ int iParentIdx, /* Index of "the page" in pParent */ @@ -56787,7 +65905,6 @@ static int balance_nonroot( int bBulk /* True if this call is part of a bulk load */ ){ BtShared *pBt; /* The whole database */ - int nCell = 0; /* Number of cells in apCell[] */ int nMaxCells = 0; /* Allocated size of apCell, szCell, aFrom. */ int nNew = 0; /* Number of pages in apNew[] */ int nOld; /* Number of pages in apOld[] */ @@ -56798,22 +65915,27 @@ static int balance_nonroot( int leafData; /* True if pPage is a leaf of a LEAFDATA tree */ int usableSpace; /* Bytes in pPage beyond the header */ int pageFlags; /* Value of pPage->aData[0] */ - int subtotal; /* Subtotal of bytes in cells on one page */ int iSpace1 = 0; /* First unused byte of aSpace1[] */ int iOvflSpace = 0; /* First unused byte of aOvflSpace[] */ int szScratch; /* Size of scratch memory requested */ MemPage *apOld[NB]; /* pPage and up to two siblings */ - MemPage *apCopy[NB]; /* Private copies of apOld[] pages */ MemPage *apNew[NB+2]; /* pPage and up to NB siblings after balancing */ u8 *pRight; /* Location in parent of right-sibling pointer */ u8 *apDiv[NB-1]; /* Divider cells in pParent */ - int cntNew[NB+2]; /* Index in aCell[] of cell after i-th page */ - int szNew[NB+2]; /* Combined size of cells place on i-th page */ - u8 **apCell = 0; /* All cells begin balanced */ - u16 *szCell; /* Local size of all cells in apCell[] */ + int cntNew[NB+2]; /* Index in b.paCell[] of cell after i-th page */ + int cntOld[NB+2]; /* Old index in b.apCell[] */ + int szNew[NB+2]; /* Combined size of cells placed on i-th page */ u8 *aSpace1; /* Space for copies of dividers cells */ Pgno pgno; /* Temp var to store a page number in */ + u8 abDone[NB+2]; /* True after i'th new page is populated */ + Pgno aPgno[NB+2]; /* Page numbers of new pages before shuffling */ + Pgno aPgOrder[NB+2]; /* Copy of aPgno[] used for sorting pages */ + u16 aPgFlags[NB+2]; /* flags field of new pages before shuffling */ + CellArray b; /* Parsed information on cells being balanced */ + memset(abDone, 0, sizeof(abDone)); + b.nCell = 0; + b.apCell = 0; pBt = pParent->pBt; assert( sqlite3_mutex_held(pBt->mutex) ); assert( sqlite3PagerIswriteable(pParent->pDbPage) ); @@ -56831,7 +65953,7 @@ static int balance_nonroot( assert( pParent->nOverflow==0 || pParent->aiOvfl[0]==iParentIdx ); if( !aOvflSpace ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } /* Find the sibling pages to balance. Also locate the cells in pParent @@ -56855,7 +65977,6 @@ static int balance_nonroot( }else if( iParentIdx==i ){ nxDiv = i-2+bBulk; }else{ - assert( bBulk==0 ); nxDiv = iParentIdx-1; } i = 2-bBulk; @@ -56868,7 +65989,7 @@ static int balance_nonroot( } pgno = get4byte(pRight); while( 1 ){ - rc = getAndInitPage(pBt, pgno, &apOld[i], 0); + rc = getAndInitPage(pBt, pgno, &apOld[i], 0, 0); if( rc ){ memset(apOld, 0, (i+1)*sizeof(MemPage*)); goto balance_cleanup; @@ -56876,15 +65997,15 @@ static int balance_nonroot( nMaxCells += 1+apOld[i]->nCell+apOld[i]->nOverflow; if( (i--)==0 ) break; - if( i+nxDiv==pParent->aiOvfl[0] && pParent->nOverflow ){ + if( pParent->nOverflow && i+nxDiv==pParent->aiOvfl[0] ){ apDiv[i] = pParent->apOvfl[0]; pgno = get4byte(apDiv[i]); - szNew[i] = cellSizePtr(pParent, apDiv[i]); + szNew[i] = pParent->xCellSize(pParent, apDiv[i]); pParent->nOverflow = 0; }else{ apDiv[i] = findCell(pParent, i+nxDiv-pParent->nOverflow); pgno = get4byte(apDiv[i]); - szNew[i] = cellSizePtr(pParent, apDiv[i]); + szNew[i] = pParent->xCellSize(pParent, apDiv[i]); /* Drop the cell from the parent page. apDiv[i] still points to ** the cell within the parent, even though it has been dropped. @@ -56922,138 +66043,207 @@ static int balance_nonroot( /* ** Allocate space for memory structures */ - k = pBt->pageSize + ROUND8(sizeof(MemPage)); szScratch = - nMaxCells*sizeof(u8*) /* apCell */ - + nMaxCells*sizeof(u16) /* szCell */ - + pBt->pageSize /* aSpace1 */ - + k*nOld; /* Page copies (apCopy) */ - apCell = sqlite3ScratchMalloc( szScratch ); - if( apCell==0 ){ - rc = SQLITE_NOMEM; + nMaxCells*sizeof(u8*) /* b.apCell */ + + nMaxCells*sizeof(u16) /* b.szCell */ + + pBt->pageSize; /* aSpace1 */ + + /* EVIDENCE-OF: R-28375-38319 SQLite will never request a scratch buffer + ** that is more than 6 times the database page size. */ + assert( szScratch<=6*(int)pBt->pageSize ); + b.apCell = sqlite3ScratchMalloc( szScratch ); + if( b.apCell==0 ){ + rc = SQLITE_NOMEM_BKPT; goto balance_cleanup; } - szCell = (u16*)&apCell[nMaxCells]; - aSpace1 = (u8*)&szCell[nMaxCells]; + b.szCell = (u16*)&b.apCell[nMaxCells]; + aSpace1 = (u8*)&b.szCell[nMaxCells]; assert( EIGHT_BYTE_ALIGNMENT(aSpace1) ); /* ** Load pointers to all cells on sibling pages and the divider cells - ** into the local apCell[] array. Make copies of the divider cells - ** into space obtained from aSpace1[] and remove the divider cells - ** from pParent. + ** into the local b.apCell[] array. Make copies of the divider cells + ** into space obtained from aSpace1[]. The divider cells have already + ** been removed from pParent. ** ** If the siblings are on leaf pages, then the child pointers of the ** divider cells are stripped from the cells before they are copied - ** into aSpace1[]. In this way, all cells in apCell[] are without + ** into aSpace1[]. In this way, all cells in b.apCell[] are without ** child pointers. If siblings are not leaves, then all cell in - ** apCell[] include child pointers. Either way, all cells in apCell[] + ** b.apCell[] include child pointers. Either way, all cells in b.apCell[] ** are alike. ** ** leafCorrection: 4 if pPage is a leaf. 0 if pPage is not a leaf. ** leafData: 1 if pPage holds key+data and pParent holds only keys. */ - leafCorrection = apOld[0]->leaf*4; - leafData = apOld[0]->hasData; + b.pRef = apOld[0]; + leafCorrection = b.pRef->leaf*4; + leafData = b.pRef->intKeyLeaf; for(i=0; ipageSize + k*i]; - memcpy(pOld, apOld[i], sizeof(MemPage)); - pOld->aData = (void*)&pOld[1]; - memcpy(pOld->aData, apOld[i]->aData, pBt->pageSize); + MemPage *pOld = apOld[i]; + int limit = pOld->nCell; + u8 *aData = pOld->aData; + u16 maskPage = pOld->maskPage; + u8 *piCell = aData + pOld->cellOffset; + u8 *piEnd; - limit = pOld->nCell+pOld->nOverflow; + /* Verify that all sibling pages are of the same "type" (table-leaf, + ** table-interior, index-leaf, or index-interior). + */ + if( pOld->aData[0]!=apOld[0]->aData[0] ){ + rc = SQLITE_CORRUPT_BKPT; + goto balance_cleanup; + } + + /* Load b.apCell[] with pointers to all cells in pOld. If pOld + ** constains overflow cells, include them in the b.apCell[] array + ** in the correct spot. + ** + ** Note that when there are multiple overflow cells, it is always the + ** case that they are sequential and adjacent. This invariant arises + ** because multiple overflows can only occurs when inserting divider + ** cells into a parent on a prior balance, and divider cells are always + ** adjacent and are inserted in order. There is an assert() tagged + ** with "NOTE 1" in the overflow cell insertion loop to prove this + ** invariant. + ** + ** This must be done in advance. Once the balance starts, the cell + ** offset section of the btree page will be overwritten and we will no + ** long be able to find the cells if a pointer to each cell is not saved + ** first. + */ + memset(&b.szCell[b.nCell], 0, sizeof(b.szCell[0])*(limit+pOld->nOverflow)); if( pOld->nOverflow>0 ){ + limit = pOld->aiOvfl[0]; for(j=0; jaData; - u16 maskPage = pOld->maskPage; - u16 cellOffset = pOld->cellOffset; - for(j=0; jnOverflow; k++){ + assert( k==0 || pOld->aiOvfl[k-1]+1==pOld->aiOvfl[k] );/* NOTE 1 */ + b.apCell[b.nCell] = pOld->apOvfl[k]; + b.nCell++; } - } + } + piEnd = aData + pOld->cellOffset + 2*pOld->nCell; + while( piCellmaxLocal+23 ); assert( iSpace1 <= (int)pBt->pageSize ); memcpy(pTemp, apDiv[i], sz); - apCell[nCell] = pTemp+leafCorrection; + b.apCell[b.nCell] = pTemp+leafCorrection; assert( leafCorrection==0 || leafCorrection==4 ); - szCell[nCell] = szCell[nCell] - leafCorrection; + b.szCell[b.nCell] = b.szCell[b.nCell] - leafCorrection; if( !pOld->leaf ){ assert( leafCorrection==0 ); assert( pOld->hdrOffset==0 ); /* The right pointer of the child page pOld becomes the left ** pointer of the divider cell */ - memcpy(apCell[nCell], &pOld->aData[8], 4); + memcpy(b.apCell[b.nCell], &pOld->aData[8], 4); }else{ assert( leafCorrection==4 ); - if( szCell[nCell]<4 ){ - /* Do not allow any cells smaller than 4 bytes. */ - szCell[nCell] = 4; + while( b.szCell[b.nCell]<4 ){ + /* Do not allow any cells smaller than 4 bytes. If a smaller cell + ** does exist, pad it with 0x00 bytes. */ + assert( b.szCell[b.nCell]==3 || CORRUPT_DB ); + assert( b.apCell[b.nCell]==&aSpace1[iSpace1-3] || CORRUPT_DB ); + aSpace1[iSpace1++] = 0x00; + b.szCell[b.nCell]++; } } - nCell++; + b.nCell++; } } /* - ** Figure out the number of pages needed to hold all nCell cells. + ** Figure out the number of pages needed to hold all b.nCell cells. ** Store this number in "k". Also compute szNew[] which is the total ** size of all cells on the i-th page and cntNew[] which is the index - ** in apCell[] of the cell that divides page i from page i+1. - ** cntNew[k] should equal nCell. + ** in b.apCell[] of the cell that divides page i from page i+1. + ** cntNew[k] should equal b.nCell. ** ** Values computed by this block: ** ** k: The total number of sibling pages ** szNew[i]: Spaced used on the i-th sibling page. - ** cntNew[i]: Index in apCell[] and szCell[] for the first cell to + ** cntNew[i]: Index in b.apCell[] and b.szCell[] for the first cell to ** the right of the i-th sibling page. ** usableSpace: Number of bytes of space available on each sibling. ** */ usableSpace = pBt->usableSize - 12 + leafCorrection; - for(subtotal=k=i=0; i usableSpace ){ - szNew[k] = subtotal - szCell[i]; - cntNew[k] = i; - if( leafData ){ i--; } - subtotal = 0; - k++; - if( k>NB+1 ){ rc = SQLITE_CORRUPT_BKPT; goto balance_cleanup; } + for(i=0; inFree; + for(j=0; jnOverflow; j++){ + szNew[i] += 2 + p->xCellSize(p, p->apOvfl[j]); + } + cntNew[i] = cntOld[i]; + } + k = nOld; + for(i=0; iusableSpace ){ + if( i+1>=k ){ + k = i+2; + if( k>NB+2 ){ rc = SQLITE_CORRUPT_BKPT; goto balance_cleanup; } + szNew[k-1] = 0; + cntNew[k-1] = b.nCell; + } + sz = 2 + cachedCellSize(&b, cntNew[i]-1); + szNew[i] -= sz; + if( !leafData ){ + if( cntNew[i]usableSpace ) break; + szNew[i] += sz; + cntNew[i]++; + if( !leafData ){ + if( cntNew[i]=b.nCell ){ + k = i+1; + }else if( cntNew[i] <= (i>0 ? cntNew[i-1] : 0) ){ + rc = SQLITE_CORRUPT_BKPT; + goto balance_cleanup; } } - szNew[k] = subtotal; - cntNew[k] = nCell; - k++; /* ** The packing computed by the previous block is biased toward the siblings - ** on the left side. The left siblings are always nearly full, while the - ** right-most sibling might be nearly empty. This block of code attempts - ** to adjust the packing of siblings to get a better balance. + ** on the left side (siblings with smaller keys). The left siblings are + ** always nearly full, while the right-most sibling might be nearly empty. + ** The next block of code attempts to adjust the packing of siblings to + ** get a better balance. ** ** This adjustment is more than an optimization. The packing above might ** be so out of balance as to be illegal. For example, the right-most @@ -57067,46 +66257,46 @@ static int balance_nonroot( r = cntNew[i-1] - 1; d = r + 1 - leafData; - assert( d szLeft-(b.szCell[r]+(i==k-1?0:2)))){ + break; + } + szRight += b.szCell[d] + 2; + szLeft -= b.szCell[r] + 2; + cntNew[i-1] = r; + r--; + d--; + }while( r>=0 ); szNew[i] = szRight; szNew[i-1] = szLeft; + if( cntNew[i-1] <= (i>1 ? cntNew[i-2] : 0) ){ + rc = SQLITE_CORRUPT_BKPT; + goto balance_cleanup; + } } - /* Either we found one or more cells (cntnew[0])>0) or pPage is - ** a virtual root page. A virtual root page is when the real root - ** page is page 1 and we are the only child of that page. - ** - ** UPDATE: The assert() below is not necessarily true if the database - ** file is corrupt. The corruption will be detected and reported later - ** in this procedure so there is no need to act upon it now. + /* Sanity check: For a non-corrupt database file one of the follwing + ** must be true: + ** (1) We found one or more cells (cntNew[0])>0), or + ** (2) pPage is a virtual root page. A virtual root page is when + ** the real root page is page 1 and we are the only child of + ** that page. */ -#if 0 - assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) ); -#endif - - TRACE(("BALANCE: old: %d %d %d ", - apOld[0]->pgno, - nOld>=2 ? apOld[1]->pgno : 0, - nOld>=3 ? apOld[2]->pgno : 0 + assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) || CORRUPT_DB); + TRACE(("BALANCE: old: %d(nc=%d) %d(nc=%d) %d(nc=%d)\n", + apOld[0]->pgno, apOld[0]->nCell, + nOld>=2 ? apOld[1]->pgno : 0, nOld>=2 ? apOld[1]->nCell : 0, + nOld>=3 ? apOld[2]->pgno : 0, nOld>=3 ? apOld[2]->nCell : 0 )); /* ** Allocate k new pages. Reuse old pages where possible. */ - if( apOld[0]->pgno<=1 ){ - rc = SQLITE_CORRUPT_BKPT; - goto balance_cleanup; - } pageFlags = apOld[0]->aData[0]; for(i=0; i0 ); rc = allocateBtreePage(pBt, &pNew, &pgno, (bBulk ? 1 : pgno), 0); if( rc ) goto balance_cleanup; + zeroPage(pNew, pageFlags); apNew[i] = pNew; nNew++; + cntOld[i] = b.nCell; /* Set the pointer-map entry for the new sibling page. */ if( ISAUTOVACUUM ){ @@ -57133,135 +66325,249 @@ static int balance_nonroot( } } - /* Free any old pages that were not reused as new pages. - */ - while( ipgno; - int minI = i; - for(j=i+1; jpgno<(unsigned)minV ){ - minI = j; - minV = apNew[j]->pgno; + for(i=0; ipgno; + aPgFlags[i] = apNew[i]->pDbPage->flags; + for(j=0; ji ){ - MemPage *pT; - pT = apNew[i]; - apNew[i] = apNew[minI]; - apNew[minI] = pT; + } + for(i=0; ii ){ + sqlite3PagerRekey(apNew[iBest]->pDbPage, pBt->nPage+iBest+1, 0); + } + sqlite3PagerRekey(apNew[i]->pDbPage, pgno, aPgFlags[iBest]); + apNew[i]->pgno = pgno; } } - TRACE(("new: %d(%d) %d(%d) %d(%d) %d(%d) %d(%d)\n", - apNew[0]->pgno, szNew[0], + + TRACE(("BALANCE: new: %d(%d nc=%d) %d(%d nc=%d) %d(%d nc=%d) " + "%d(%d nc=%d) %d(%d nc=%d)\n", + apNew[0]->pgno, szNew[0], cntNew[0], nNew>=2 ? apNew[1]->pgno : 0, nNew>=2 ? szNew[1] : 0, + nNew>=2 ? cntNew[1] - cntNew[0] - !leafData : 0, nNew>=3 ? apNew[2]->pgno : 0, nNew>=3 ? szNew[2] : 0, + nNew>=3 ? cntNew[2] - cntNew[1] - !leafData : 0, nNew>=4 ? apNew[3]->pgno : 0, nNew>=4 ? szNew[3] : 0, - nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0)); + nNew>=4 ? cntNew[3] - cntNew[2] - !leafData : 0, + nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0, + nNew>=5 ? cntNew[4] - cntNew[3] - !leafData : 0 + )); assert( sqlite3PagerIswriteable(pParent->pDbPage) ); put4byte(pRight, apNew[nNew-1]->pgno); - /* - ** Evenly distribute the data in apCell[] across the new pages. - ** Insert divider cells into pParent as necessary. + /* If the sibling pages are not leaves, ensure that the right-child pointer + ** of the right-most new sibling page is set to the value that was + ** originally in the same field of the right-most old sibling page. */ + if( (pageFlags & PTF_LEAF)==0 && nOld!=nNew ){ + MemPage *pOld = (nNew>nOld ? apNew : apOld)[nOld-1]; + memcpy(&apNew[nNew-1]->aData[8], &pOld->aData[8], 4); + } + + /* Make any required updates to pointer map entries associated with + ** cells stored on sibling pages following the balance operation. Pointer + ** map entries associated with divider cells are set by the insertCell() + ** routine. The associated pointer map entries are: + ** + ** a) if the cell contains a reference to an overflow chain, the + ** entry associated with the first page in the overflow chain, and + ** + ** b) if the sibling pages are not leaves, the child page associated + ** with the cell. + ** + ** If the sibling pages are not leaves, then the pointer map entry + ** associated with the right-child of each sibling may also need to be + ** updated. This happens below, after the sibling pages have been + ** populated, not here. */ - j = 0; - for(i=0; inCell>0 || (nNew==1 && cntNew[0]==0) ); - assert( pNew->nOverflow==0 ); + if( ISAUTOVACUUM ){ + MemPage *pNew = apNew[0]; + u8 *aOld = pNew->aData; + int cntOldNext = pNew->nCell + pNew->nOverflow; + int usableSize = pBt->usableSize; + int iNew = 0; + int iOld = 0; - j = cntNew[i]; - - /* If the sibling page assembled above was not the right-most sibling, - ** insert a divider cell into the parent page. - */ - assert( ileaf ){ - memcpy(&pNew->aData[8], pCell, 4); - }else if( leafData ){ - /* If the tree is a leaf-data tree, and the siblings are leaves, - ** then there is no divider cell in apCell[]. Instead, the divider - ** cell consists of the integer key for the right-most cell of - ** the sibling-page assembled above only. - */ - CellInfo info; - j--; - btreeParseCellPtr(pNew, apCell[j], &info); - pCell = pTemp; - sz = 4 + putVarint(&pCell[4], info.nKey); - pTemp = 0; - }else{ - pCell -= 4; - /* Obscure case for non-leaf-data trees: If the cell at pCell was - ** previously stored on a leaf node, and its reported size was 4 - ** bytes, then it may actually be smaller than this - ** (see btreeParseCellPtr(), 4 bytes is the minimum size of - ** any cell). But it is important to pass the correct size to - ** insertCell(), so reparse the cell now. - ** - ** Note that this can never happen in an SQLite data file, as all - ** cells are at least 4 bytes. It only happens in b-trees used - ** to evaluate "IN (SELECT ...)" and similar clauses. - */ - if( szCell[j]==4 ){ - assert(leafCorrection==4); - sz = cellSizePtr(pParent, pCell); - } + for(i=0; inCell + pOld->nOverflow + !leafData; + aOld = pOld->aData; + } + if( i==cntNew[iNew] ){ + pNew = apNew[++iNew]; + if( !leafData ) continue; } - iOvflSpace += sz; - assert( sz<=pBt->maxLocal+23 ); - assert( iOvflSpace <= (int)pBt->pageSize ); - insertCell(pParent, nxDiv, pCell, sz, pTemp, pNew->pgno, &rc); - if( rc!=SQLITE_OK ) goto balance_cleanup; - assert( sqlite3PagerIswriteable(pParent->pDbPage) ); - j++; - nxDiv++; + /* Cell pCell is destined for new sibling page pNew. Originally, it + ** was either part of sibling page iOld (possibly an overflow cell), + ** or else the divider cell to the left of sibling page iOld. So, + ** if sibling page iOld had the same page number as pNew, and if + ** pCell really was a part of sibling page iOld (not a divider or + ** overflow cell), we can skip updating the pointer map entries. */ + if( iOld>=nNew + || pNew->pgno!=aPgno[iOld] + || !SQLITE_WITHIN(pCell,aOld,&aOld[usableSize]) + ){ + if( !leafCorrection ){ + ptrmapPut(pBt, get4byte(pCell), PTRMAP_BTREE, pNew->pgno, &rc); + } + if( cachedCellSize(&b,i)>pNew->minLocal ){ + ptrmapPutOvflPtr(pNew, pCell, &rc); + } + if( rc ) goto balance_cleanup; + } } } - assert( j==nCell ); + + /* Insert new divider cells into pParent. */ + for(i=0; ileaf ){ + memcpy(&pNew->aData[8], pCell, 4); + }else if( leafData ){ + /* If the tree is a leaf-data tree, and the siblings are leaves, + ** then there is no divider cell in b.apCell[]. Instead, the divider + ** cell consists of the integer key for the right-most cell of + ** the sibling-page assembled above only. + */ + CellInfo info; + j--; + pNew->xParseCell(pNew, b.apCell[j], &info); + pCell = pTemp; + sz = 4 + putVarint(&pCell[4], info.nKey); + pTemp = 0; + }else{ + pCell -= 4; + /* Obscure case for non-leaf-data trees: If the cell at pCell was + ** previously stored on a leaf node, and its reported size was 4 + ** bytes, then it may actually be smaller than this + ** (see btreeParseCellPtr(), 4 bytes is the minimum size of + ** any cell). But it is important to pass the correct size to + ** insertCell(), so reparse the cell now. + ** + ** This can only happen for b-trees used to evaluate "IN (SELECT ...)" + ** and WITHOUT ROWID tables with exactly one column which is the + ** primary key. + */ + if( b.szCell[j]==4 ){ + assert(leafCorrection==4); + sz = pParent->xCellSize(pParent, pCell); + } + } + iOvflSpace += sz; + assert( sz<=pBt->maxLocal+23 ); + assert( iOvflSpace <= (int)pBt->pageSize ); + insertCell(pParent, nxDiv+i, pCell, sz, pTemp, pNew->pgno, &rc); + if( rc!=SQLITE_OK ) goto balance_cleanup; + assert( sqlite3PagerIswriteable(pParent->pDbPage) ); + } + + /* Now update the actual sibling pages. The order in which they are updated + ** is important, as this code needs to avoid disrupting any page from which + ** cells may still to be read. In practice, this means: + ** + ** (1) If cells are moving left (from apNew[iPg] to apNew[iPg-1]) + ** then it is not safe to update page apNew[iPg] until after + ** the left-hand sibling apNew[iPg-1] has been updated. + ** + ** (2) If cells are moving right (from apNew[iPg] to apNew[iPg+1]) + ** then it is not safe to update page apNew[iPg] until after + ** the right-hand sibling apNew[iPg+1] has been updated. + ** + ** If neither of the above apply, the page is safe to update. + ** + ** The iPg value in the following loop starts at nNew-1 goes down + ** to 0, then back up to nNew-1 again, thus making two passes over + ** the pages. On the initial downward pass, only condition (1) above + ** needs to be tested because (2) will always be true from the previous + ** step. On the upward pass, both conditions are always true, so the + ** upwards pass simply processes pages that were missed on the downward + ** pass. + */ + for(i=1-nNew; i=0 && iPg=0 /* On the upwards pass, or... */ + || cntOld[iPg-1]>=cntNew[iPg-1] /* Condition (1) is true */ + ){ + int iNew; + int iOld; + int nNewCell; + + /* Verify condition (1): If cells are moving left, update iPg + ** only after iPg-1 has already been updated. */ + assert( iPg==0 || cntOld[iPg-1]>=cntNew[iPg-1] || abDone[iPg-1] ); + + /* Verify condition (2): If cells are moving right, update iPg + ** only after iPg+1 has already been updated. */ + assert( cntNew[iPg]>=cntOld[iPg] || abDone[iPg+1] ); + + if( iPg==0 ){ + iNew = iOld = 0; + nNewCell = cntNew[0]; + }else{ + iOld = iPgnFree = usableSpace-szNew[iPg]; + assert( apNew[iPg]->nOverflow==0 ); + assert( apNew[iPg]->nCell==nNewCell ); + } + } + + /* All pages have been processed exactly once */ + assert( memcmp(abDone, "\01\01\01\01\01", nNew)==0 ); + assert( nOld>0 ); assert( nNew>0 ); - if( (pageFlags & PTF_LEAF)==0 ){ - u8 *zChild = &apCopy[nOld-1]->aData[8]; - memcpy(&apNew[nNew-1]->aData[8], zChild, 4); - } if( isRoot && pParent->nCell==0 && pParent->hdrOffset<=apNew[0]->nFree ){ /* The root page of the b-tree now contains no cells. The only sibling @@ -57274,140 +66580,56 @@ static int balance_nonroot( ** sets all pointer-map entries corresponding to database image pages ** for which the pointer is stored within the content being copied. ** - ** The second assert below verifies that the child page is defragmented - ** (it must be, as it was just reconstructed using assemblePage()). This - ** is important if the parent page happens to be page 1 of the database - ** image. */ - assert( nNew==1 ); + ** It is critical that the child page be defragmented before being + ** copied into the parent, because if the parent is page 1 then it will + ** by smaller than the child due to the database header, and so all the + ** free space needs to be up front. + */ + assert( nNew==1 || CORRUPT_DB ); + rc = defragmentPage(apNew[0]); + testcase( rc!=SQLITE_OK ); assert( apNew[0]->nFree == - (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2) + (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2) + || rc!=SQLITE_OK ); copyNodeContent(apNew[0], pParent, &rc); freePage(apNew[0], &rc); - }else if( ISAUTOVACUUM ){ - /* Fix the pointer-map entries for all the cells that were shifted around. - ** There are several different types of pointer-map entries that need to - ** be dealt with by this routine. Some of these have been set already, but - ** many have not. The following is a summary: - ** - ** 1) The entries associated with new sibling pages that were not - ** siblings when this function was called. These have already - ** been set. We don't need to worry about old siblings that were - ** moved to the free-list - the freePage() code has taken care - ** of those. - ** - ** 2) The pointer-map entries associated with the first overflow - ** page in any overflow chains used by new divider cells. These - ** have also already been taken care of by the insertCell() code. - ** - ** 3) If the sibling pages are not leaves, then the child pages of - ** cells stored on the sibling pages may need to be updated. - ** - ** 4) If the sibling pages are not internal intkey nodes, then any - ** overflow pages used by these cells may need to be updated - ** (internal intkey nodes never contain pointers to overflow pages). - ** - ** 5) If the sibling pages are not leaves, then the pointer-map - ** entries for the right-child pages of each sibling may need - ** to be updated. - ** - ** Cases 1 and 2 are dealt with above by other code. The next - ** block deals with cases 3 and 4 and the one after that, case 5. Since - ** setting a pointer map entry is a relatively expensive operation, this - ** code only sets pointer map entries for child or overflow pages that have - ** actually moved between pages. */ - MemPage *pNew = apNew[0]; - MemPage *pOld = apCopy[0]; - int nOverflow = pOld->nOverflow; - int iNextOld = pOld->nCell + nOverflow; - int iOverflow = (nOverflow ? pOld->aiOvfl[0] : -1); - j = 0; /* Current 'old' sibling page */ - k = 0; /* Current 'new' sibling page */ - for(i=0; inCell + pOld->nOverflow; - if( pOld->nOverflow ){ - nOverflow = pOld->nOverflow; - iOverflow = i + !leafData + pOld->aiOvfl[0]; - } - isDivider = !leafData; - } - - assert(nOverflow>0 || iOverflowaiOvfl[0]==pOld->aiOvfl[1]-1); - assert(nOverflow<3 || pOld->aiOvfl[1]==pOld->aiOvfl[2]-1); - if( i==iOverflow ){ - isDivider = 1; - if( (--nOverflow)>0 ){ - iOverflow++; - } - } - - if( i==cntNew[k] ){ - /* Cell i is the cell immediately following the last cell on new - ** sibling page k. If the siblings are not leaf pages of an - ** intkey b-tree, then cell i is a divider cell. */ - pNew = apNew[++k]; - if( !leafData ) continue; - } - assert( jpgno!=pNew->pgno ){ - if( !leafCorrection ){ - ptrmapPut(pBt, get4byte(apCell[i]), PTRMAP_BTREE, pNew->pgno, &rc); - } - if( szCell[i]>pNew->minLocal ){ - ptrmapPutOvflPtr(pNew, apCell[i], &rc); - } - } + }else if( ISAUTOVACUUM && !leafCorrection ){ + /* Fix the pointer map entries associated with the right-child of each + ** sibling page. All other pointer map entries have already been taken + ** care of. */ + for(i=0; iaData[8]); + ptrmapPut(pBt, key, PTRMAP_BTREE, apNew[i]->pgno, &rc); } + } - if( !leafCorrection ){ - for(i=0; iaData[8]); - ptrmapPut(pBt, key, PTRMAP_BTREE, apNew[i]->pgno, &rc); - } - } + assert( pParent->isInit ); + TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n", + nOld, nNew, b.nCell)); + + /* Free any old pages that were not reused as new pages. + */ + for(i=nNew; iisInit ){ /* The ptrmapCheckPages() contains assert() statements that verify that ** all pointer map pages are set correctly. This is helpful while ** debugging. This is usually disabled because a corrupt database may ** cause an assert() statement to fail. */ ptrmapCheckPages(apNew, nNew); ptrmapCheckPages(&pParent, 1); -#endif } - - assert( pParent->isInit ); - TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n", - nOld, nNew, nCell)); +#endif /* ** Cleanup before returning. */ balance_cleanup: - sqlite3ScratchFree(apCell); + sqlite3ScratchFree(b.apCell); for(i=0; i= 1700 && defined(_M_ARM) -#pragma optimize("", on) -#endif /* @@ -57504,8 +66723,8 @@ static int balance(BtCursor *pCur){ u8 aBalanceQuickSpace[13]; u8 *pFree = 0; - TESTONLY( int balance_quick_called = 0 ); - TESTONLY( int balance_deeper_called = 0 ); + VVA_ONLY( int balance_quick_called = 0 ); + VVA_ONLY( int balance_deeper_called = 0 ); do { int iPage = pCur->iPage; @@ -57518,7 +66737,8 @@ static int balance(BtCursor *pCur){ ** and copy the current contents of the root-page to it. The ** next iteration of the do-loop will balance the child page. */ - assert( (balance_deeper_called++)==0 ); + assert( balance_deeper_called==0 ); + VVA_ONLY( balance_deeper_called++ ); rc = balance_deeper(pPage, &pCur->apPage[1]); if( rc==SQLITE_OK ){ pCur->iPage = 1; @@ -57538,7 +66758,7 @@ static int balance(BtCursor *pCur){ rc = sqlite3PagerWrite(pParent->pDbPage); if( rc==SQLITE_OK ){ #ifndef SQLITE_OMIT_QUICKBALANCE - if( pPage->hasData + if( pPage->intKeyLeaf && pPage->nOverflow==1 && pPage->aiOvfl[0]==pPage->nCell && pParent->pgno!=1 @@ -57547,7 +66767,7 @@ static int balance(BtCursor *pCur){ /* Call balance_quick() to create a new sibling of pPage on which ** to store the overflow cell. balance_quick() inserts a new cell ** into pParent, which may cause pParent overflow. If this - ** happens, the next interation of the do-loop will balance pParent + ** happens, the next iteration of the do-loop will balance pParent ** use either balance_nonroot() or balance_deeper(). Until this ** happens, the overflow cell is stored in the aBalanceQuickSpace[] ** buffer. @@ -57557,7 +66777,8 @@ static int balance(BtCursor *pCur){ ** function. If this were not verified, a subtle bug involving reuse ** of the aBalanceQuickSpace[] might sneak in. */ - assert( (balance_quick_called++)==0 ); + assert( balance_quick_called==0 ); + VVA_ONLY( balance_quick_called++ ); rc = balance_quick(pParent, pPage, aBalanceQuickSpace); }else #endif @@ -57580,7 +66801,8 @@ static int balance(BtCursor *pCur){ ** pSpace buffer passed to the latter call to balance_nonroot(). */ u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize); - rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1, pCur->hints); + rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1, + pCur->hints&BTREE_BULKLOAD); if( pFree ){ /* If pFree is not NULL, it points to the pSpace buffer used ** by a previous call to balance_nonroot(). Its contents are @@ -57601,6 +66823,7 @@ static int balance(BtCursor *pCur){ /* The next iteration of the do-loop balances the parent page. */ releasePage(pPage); pCur->iPage--; + assert( pCur->iPage>=0 ); } }while( rc==SQLITE_OK ); @@ -57612,33 +66835,39 @@ static int balance(BtCursor *pCur){ /* -** Insert a new record into the BTree. The key is given by (pKey,nKey) -** and the data is given by (pData,nData). The cursor is used only to -** define what table the record should be inserted into. The cursor -** is left pointing at a random location. +** Insert a new record into the BTree. The content of the new record +** is described by the pX object. The pCur cursor is used only to +** define what table the record should be inserted into, and is left +** pointing at a random location. ** -** For an INTKEY table, only the nKey value of the key is used. pKey is -** ignored. For a ZERODATA table, the pData and nData are both ignored. +** For a table btree (used for rowid tables), only the pX.nKey value of +** the key is used. The pX.pKey value must be NULL. The pX.nKey is the +** rowid or INTEGER PRIMARY KEY of the row. The pX.nData,pData,nZero fields +** hold the content of the row. +** +** For an index btree (used for indexes and WITHOUT ROWID tables), the +** key is an arbitrary byte sequence stored in pX.pKey,nKey. The +** pX.pData,nData,nZero fields must be zero. ** ** If the seekResult parameter is non-zero, then a successful call to -** MovetoUnpacked() to seek cursor pCur to (pKey, nKey) has already -** been performed. seekResult is the search result returned (a negative -** number if pCur points at an entry that is smaller than (pKey, nKey), or -** a positive value if pCur points at an etry that is larger than -** (pKey, nKey)). +** MovetoUnpacked() to seek cursor pCur to (pKey,nKey) has already +** been performed. In other words, if seekResult!=0 then the cursor +** is currently pointing to a cell that will be adjacent to the cell +** to be inserted. If seekResult<0 then pCur points to a cell that is +** smaller then (pKey,nKey). If seekResult>0 then pCur points to a cell +** that is larger than (pKey,nKey). ** -** If the seekResult parameter is non-zero, then the caller guarantees that -** cursor pCur is pointing at the existing copy of a row that is to be -** overwritten. If the seekResult parameter is 0, then cursor pCur may -** point to any entry or to no entry at all and so this function has to seek -** the cursor before the new key can be inserted. +** If seekResult==0, that means pCur is pointing at some unknown location. +** In that case, this routine must seek the cursor to the correct insertion +** point for (pKey,nKey) before doing the insertion. For index btrees, +** if pX->nMem is non-zero, then pX->aMem contains pointers to the unpacked +** key values and pX->aMem can be used instead of pX->pKey to avoid having +** to decode the key. */ SQLITE_PRIVATE int sqlite3BtreeInsert( BtCursor *pCur, /* Insert data into the table of this cursor */ - const void *pKey, i64 nKey, /* The key of the new record */ - const void *pData, int nData, /* The data of the new record */ - int nZero, /* Number of extra 0 bytes to append to data */ - int appendBias, /* True if this is likely an append */ + const BtreePayload *pX, /* Content of the row to be inserted */ + int flags, /* True if this is likely an append */ int seekResult /* Result of prior MovetoUnpacked() call */ ){ int rc; @@ -57651,13 +66880,16 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( unsigned char *oldCell; unsigned char *newCell = 0; + assert( (flags & (BTREE_SAVEPOSITION|BTREE_APPEND))==flags ); + if( pCur->eState==CURSOR_FAULT ){ assert( pCur->skipNext!=SQLITE_OK ); return pCur->skipNext; } - assert( cursorHoldsMutex(pCur) ); - assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE + assert( cursorOwnsBtShared(pCur) ); + assert( (pCur->curFlags & BTCF_WriteFlag)!=0 + && pBt->inTransaction==TRANS_WRITE && (pBt->btsFlags & BTS_READ_ONLY)==0 ); assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); @@ -57666,7 +66898,7 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** keys with no associated data. If the cursor was opened expecting an ** intkey table, the caller should be inserting integer keys with a ** blob of associated data. */ - assert( (pKey==0)==(pCur->pKeyInfo==0) ); + assert( (pX->pKey==0)==(pCur->pKeyInfo==0) ); /* Save the positions of any other cursors open on this table. ** @@ -57679,40 +66911,70 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** doing any work. To avoid thwarting these optimizations, it is important ** not to clear the cursor here. */ - rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); - if( rc ) return rc; - - /* If this is an insert into a table b-tree, invalidate any incrblob - ** cursors open on the row being replaced (assuming this is a replace - ** operation - if it is not, the following is a no-op). */ - if( pCur->pKeyInfo==0 ){ - invalidateIncrblobCursors(p, nKey, 0); + if( pCur->curFlags & BTCF_Multiple ){ + rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); + if( rc ) return rc; } - if( !loc ){ - rc = btreeMoveto(pCur, pKey, nKey, appendBias, &loc); + if( pCur->pKeyInfo==0 ){ + assert( pX->pKey==0 ); + /* If this is an insert into a table b-tree, invalidate any incrblob + ** cursors open on the row being replaced */ + invalidateIncrblobCursors(p, pX->nKey, 0); + + /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing + ** to a row with the same key as the new entry being inserted. */ + assert( (flags & BTREE_SAVEPOSITION)==0 || + ((pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey) ); + + /* If the cursor is currently on the last row and we are appending a + ** new row onto the end, set the "loc" to avoid an unnecessary + ** btreeMoveto() call */ + if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey ){ + loc = 0; + }else if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey>0 + && pCur->info.nKey==pX->nKey-1 ){ + loc = -1; + }else if( loc==0 ){ + rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, flags!=0, &loc); + if( rc ) return rc; + } + }else if( loc==0 && (flags & BTREE_SAVEPOSITION)==0 ){ + if( pX->nMem ){ + UnpackedRecord r; + r.pKeyInfo = pCur->pKeyInfo; + r.aMem = pX->aMem; + r.nField = pX->nMem; + r.default_rc = 0; + r.errCode = 0; + r.r1 = 0; + r.r2 = 0; + r.eqSeen = 0; + rc = sqlite3BtreeMovetoUnpacked(pCur, &r, 0, flags!=0, &loc); + }else{ + rc = btreeMoveto(pCur, pX->pKey, pX->nKey, flags!=0, &loc); + } if( rc ) return rc; } assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) ); pPage = pCur->apPage[pCur->iPage]; - assert( pPage->intKey || nKey>=0 ); + assert( pPage->intKey || pX->nKey>=0 ); assert( pPage->leaf || !pPage->intKey ); TRACE(("INSERT: table=%d nkey=%lld ndata=%d page=%d %s\n", - pCur->pgnoRoot, nKey, nData, pPage->pgno, + pCur->pgnoRoot, pX->nKey, pX->nData, pPage->pgno, loc==0 ? "overwrite" : "new entry")); assert( pPage->isInit ); - allocateTempSpace(pBt); newCell = pBt->pTmpSpace; - if( newCell==0 ) return SQLITE_NOMEM; - rc = fillInCell(pPage, newCell, pKey, nKey, pData, nData, nZero, &szNew); + assert( newCell!=0 ); + rc = fillInCell(pPage, newCell, pX, &szNew); if( rc ) goto end_insert; - assert( szNew==cellSizePtr(pPage, newCell) ); + assert( szNew==pPage->xCellSize(pPage, newCell) ); assert( szNew <= MX_CELL_SIZE(pBt) ); idx = pCur->aiIdx[pCur->iPage]; if( loc==0 ){ - u16 szOld; + CellInfo info; assert( idxnCell ); rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ){ @@ -57722,9 +66984,19 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( if( !pPage->leaf ){ memcpy(newCell, oldCell, 4); } - szOld = cellSizePtr(pPage, oldCell); - rc = clearCell(pPage, oldCell); - dropCell(pPage, idx, szOld, &rc); + rc = clearCell(pPage, oldCell, &info); + if( info.nSize==szNew && info.nLocal==info.nPayload ){ + /* Overwrite the old cell with the new if they are the same size. + ** We could also try to do this if the old cell is smaller, then add + ** the leftover space to the free list. But experiments show that + ** doing that is no faster then skipping this optimization and just + ** calling dropCell() and insertCell(). */ + assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */ + if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT; + memcpy(oldCell, newCell, szNew); + return SQLITE_OK; + } + dropCell(pPage, idx, info.nSize, &rc); if( rc ) goto end_insert; }else if( loc<0 && pPage->nCell>0 ){ assert( pPage->leaf ); @@ -57733,11 +67005,12 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( assert( pPage->leaf ); } insertCell(pPage, idx, newCell, szNew, 0, 0, &rc); + assert( pPage->nOverflow==0 || rc==SQLITE_OK ); assert( rc!=SQLITE_OK || pPage->nCell>0 || pPage->nOverflow>0 ); /* If no error has occurred and pPage has an overflow cell, call balance() ** to redistribute the cells within the tree. Since balance() may move - ** the cursor, zero the BtCursor.info.nSize and BtCursor.validNKey + ** the cursor, zero the BtCursor.info.nSize and BTCF_ValidNKey ** variables. ** ** Previous versions of SQLite called moveToRoot() to move the cursor @@ -57756,8 +67029,9 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** row without seeking the cursor. This can be a big performance boost. */ pCur->info.nSize = 0; - pCur->validNKey = 0; - if( rc==SQLITE_OK && pPage->nOverflow ){ + if( pPage->nOverflow ){ + assert( rc==SQLITE_OK ); + pCur->curFlags &= ~(BTCF_ValidNKey); rc = balance(pCur); /* Must make sure nOverflow is reset to zero even if the balance() @@ -57766,6 +67040,20 @@ SQLITE_PRIVATE int sqlite3BtreeInsert( ** from trying to save the current position of the cursor. */ pCur->apPage[pCur->iPage]->nOverflow = 0; pCur->eState = CURSOR_INVALID; + if( (flags & BTREE_SAVEPOSITION) && rc==SQLITE_OK ){ + rc = moveToRoot(pCur); + if( pCur->pKeyInfo ){ + assert( pCur->pKey==0 ); + pCur->pKey = sqlite3Malloc( pX->nKey ); + if( pCur->pKey==0 ){ + rc = SQLITE_NOMEM; + }else{ + memcpy(pCur->pKey, pX->pKey, pX->nKey); + } + } + pCur->eState = CURSOR_REQUIRESEEK; + pCur->nKey = pX->nKey; + } } assert( pCur->apPage[pCur->iPage]->nOverflow==0 ); @@ -57774,10 +67062,23 @@ end_insert: } /* -** Delete the entry that the cursor is pointing to. The cursor -** is left pointing at a arbitrary location. +** Delete the entry that the cursor is pointing to. +** +** If the BTREE_SAVEPOSITION bit of the flags parameter is zero, then +** the cursor is left pointing at an arbitrary location after the delete. +** But if that bit is set, then the cursor is left in a state such that +** the next call to BtreeNext() or BtreePrev() moves it to the same row +** as it would have been on if the call to BtreeDelete() had been omitted. +** +** The BTREE_AUXDELETE bit of flags indicates that is one of several deletes +** associated with a single table entry and its indexes. Only one of those +** deletes is considered the "primary" delete. The primary delete occurs +** on a cursor that is not a BTREE_FORDELETE cursor. All but one delete +** operation on non-FORDELETE cursors is tagged with the AUXDELETE flag. +** The BTREE_AUXDELETE bit is a hint that is not used by this implementation, +** but which might be used by alternative storage engines. */ -SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ +SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){ Btree *p = pCur->pBtree; BtShared *pBt = p->pBt; int rc; /* Return code */ @@ -57785,25 +67086,47 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ unsigned char *pCell; /* Pointer to cell to delete */ int iCellIdx; /* Index of cell to delete */ int iCellDepth; /* Depth of node containing pCell */ + CellInfo info; /* Size of the cell being deleted */ + int bSkipnext = 0; /* Leaf cursor in SKIPNEXT state */ + u8 bPreserve = flags & BTREE_SAVEPOSITION; /* Keep cursor valid */ - assert( cursorHoldsMutex(pCur) ); + assert( cursorOwnsBtShared(pCur) ); assert( pBt->inTransaction==TRANS_WRITE ); assert( (pBt->btsFlags & BTS_READ_ONLY)==0 ); - assert( pCur->wrFlag ); + assert( pCur->curFlags & BTCF_WriteFlag ); assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); assert( !hasReadConflicts(p, pCur->pgnoRoot) ); - - if( NEVER(pCur->aiIdx[pCur->iPage]>=pCur->apPage[pCur->iPage]->nCell) - || NEVER(pCur->eState!=CURSOR_VALID) - ){ - return SQLITE_ERROR; /* Something has gone awry. */ - } + assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); + assert( pCur->eState==CURSOR_VALID ); + assert( (flags & ~(BTREE_SAVEPOSITION | BTREE_AUXDELETE))==0 ); iCellDepth = pCur->iPage; iCellIdx = pCur->aiIdx[iCellDepth]; pPage = pCur->apPage[iCellDepth]; pCell = findCell(pPage, iCellIdx); + /* If the bPreserve flag is set to true, then the cursor position must + ** be preserved following this delete operation. If the current delete + ** will cause a b-tree rebalance, then this is done by saving the cursor + ** key and leaving the cursor in CURSOR_REQUIRESEEK state before + ** returning. + ** + ** Or, if the current delete will not cause a rebalance, then the cursor + ** will be left in CURSOR_SKIPNEXT state pointing to the entry immediately + ** before or after the deleted entry. In this case set bSkipnext to true. */ + if( bPreserve ){ + if( !pPage->leaf + || (pPage->nFree+cellSizePtr(pPage,pCell)+2)>(int)(pBt->usableSize*2/3) + ){ + /* A b-tree rebalance will be required after deleting this entry. + ** Save the cursor key. */ + rc = saveCursorKey(pCur); + if( rc ) return rc; + }else{ + bSkipnext = 1; + } + } + /* If the page containing the entry to delete is not a leaf page, move ** the cursor to the largest entry in the tree that is smaller than ** the entry being deleted. This cell will replace the cell being deleted @@ -57812,18 +67135,17 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ ** sub-tree headed by the child page of the cell being deleted. This makes ** balancing the tree following the delete operation easier. */ if( !pPage->leaf ){ - int notUsed; + int notUsed = 0; rc = sqlite3BtreePrevious(pCur, ¬Used); if( rc ) return rc; } /* Save the positions of any other cursors open on this table before - ** making any modifications. Make the page containing the entry to be - ** deleted writable. Then free any overflow pages associated with the - ** entry and finally remove the cell itself from within the page. - */ - rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); - if( rc ) return rc; + ** making any modifications. */ + if( pCur->curFlags & BTCF_Multiple ){ + rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); + if( rc ) return rc; + } /* If this is a delete operation to remove a row from a table b-tree, ** invalidate any incrblob cursors open on the row being deleted. */ @@ -57831,10 +67153,13 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ invalidateIncrblobCursors(p, pCur->info.nKey, 0); } + /* Make the page containing the entry to be deleted writable. Then free any + ** overflow pages associated with the entry and finally remove the cell + ** itself from within the page. */ rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; - rc = clearCell(pPage, pCell); - dropCell(pPage, iCellIdx, cellSizePtr(pPage, pCell), &rc); + rc = clearCell(pPage, pCell, &info); + dropCell(pPage, iCellIdx, info.nSize, &rc); if( rc ) return rc; /* If the cell deleted was not located on a leaf page, then the cursor @@ -57849,14 +67174,15 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ unsigned char *pTmp; pCell = findCell(pLeaf, pLeaf->nCell-1); - nCell = cellSizePtr(pLeaf, pCell); + if( pCell<&pLeaf->aData[4] ) return SQLITE_CORRUPT_BKPT; + nCell = pLeaf->xCellSize(pLeaf, pCell); assert( MX_CELL_SIZE(pBt) >= nCell ); - - allocateTempSpace(pBt); pTmp = pBt->pTmpSpace; - + assert( pTmp!=0 ); rc = sqlite3PagerWrite(pLeaf->pDbPage); - insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n, &rc); + if( rc==SQLITE_OK ){ + insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n, &rc); + } dropCell(pLeaf, pLeaf->nCell-1, nCell, &rc); if( rc ) return rc; } @@ -57885,7 +67211,23 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ } if( rc==SQLITE_OK ){ - moveToRoot(pCur); + if( bSkipnext ){ + assert( bPreserve && (pCur->iPage==iCellDepth || CORRUPT_DB) ); + assert( pPage==pCur->apPage[pCur->iPage] || CORRUPT_DB ); + assert( (pPage->nCell>0 || CORRUPT_DB) && iCellIdx<=pPage->nCell ); + pCur->eState = CURSOR_SKIPNEXT; + if( iCellIdx>=pPage->nCell ){ + pCur->skipNext = -1; + pCur->aiIdx[iCellDepth] = pPage->nCell-1; + }else{ + pCur->skipNext = 1; + } + }else{ + rc = moveToRoot(pCur); + if( bPreserve ){ + pCur->eState = CURSOR_REQUIRESEEK; + } + } } return rc; } @@ -57943,7 +67285,8 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ pgnoRoot==PENDING_BYTE_PAGE(pBt) ){ pgnoRoot++; } - assert( pgnoRoot>=3 ); + assert( pgnoRoot>=3 || CORRUPT_DB ); + testcase( pgnoRoot<3 ); /* Allocate a page. The page that currently resides at pgnoRoot will ** be moved to the allocated page (unless the allocated page happens @@ -58066,14 +67409,19 @@ static int clearDatabasePage( unsigned char *pCell; int i; int hdr; + CellInfo info; assert( sqlite3_mutex_held(pBt->mutex) ); if( pgno>btreePagecount(pBt) ){ return SQLITE_CORRUPT_BKPT; } - - rc = getAndInitPage(pBt, pgno, &pPage, 0); + rc = getAndInitPage(pBt, pgno, &pPage, 0, 0); if( rc ) return rc; + if( pPage->bBusy ){ + rc = SQLITE_CORRUPT_BKPT; + goto cleardatabasepage_out; + } + pPage->bBusy = 1; hdr = pPage->hdrOffset; for(i=0; inCell; i++){ pCell = findCell(pPage, i); @@ -58081,14 +67429,15 @@ static int clearDatabasePage( rc = clearDatabasePage(pBt, get4byte(pCell), 1, pnChange); if( rc ) goto cleardatabasepage_out; } - rc = clearCell(pPage, pCell); + rc = clearCell(pPage, pCell, &info); if( rc ) goto cleardatabasepage_out; } if( !pPage->leaf ){ rc = clearDatabasePage(pBt, get4byte(&pPage->aData[hdr+8]), 1, pnChange); if( rc ) goto cleardatabasepage_out; }else if( pnChange ){ - assert( pPage->intKey ); + assert( pPage->intKey || CORRUPT_DB ); + testcase( !pPage->intKey ); *pnChange += pPage->nCell; } if( freePageFlag ){ @@ -58098,6 +67447,7 @@ static int clearDatabasePage( } cleardatabasepage_out: + pPage->bBusy = 0; releasePage(pPage); return rc; } @@ -58134,6 +67484,15 @@ SQLITE_PRIVATE int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){ return rc; } +/* +** Delete all information from the single table that pCur is open on. +** +** This routine only work for pCur on an ephemeral table. +*/ +SQLITE_PRIVATE int sqlite3BtreeClearTableOfCursor(BtCursor *pCur){ + return sqlite3BtreeClearTable(pCur->pBtree, pCur->pgnoRoot, 0); +} + /* ** Erase all information in a table and add the root of the table to ** the freelist. Except, the root of the principle table (the one on @@ -58161,19 +67520,7 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ assert( sqlite3BtreeHoldsMutex(p) ); assert( p->inTrans==TRANS_WRITE ); - - /* It is illegal to drop a table if any cursors are open on the - ** database. This is because in auto-vacuum mode the backend may - ** need to move another root-page to fill a gap left by the deleted - ** root page. If an open cursor was using this page a problem would - ** occur. - ** - ** This error is caught long before control reaches this point. - */ - if( NEVER(pBt->pCursor) ){ - sqlite3ConnectionBlocked(p->db, pBt->pCursor->pBtree->db); - return SQLITE_LOCKED_SHAREDCACHE; - } + assert( iTable>=2 ); rc = btreeGetPage(pBt, (Pgno)iTable, &pPage, 0); if( rc ) return rc; @@ -58185,76 +67532,67 @@ static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ *piMoved = 0; - if( iTable>1 ){ #ifdef SQLITE_OMIT_AUTOVACUUM - freePage(pPage, &rc); - releasePage(pPage); + freePage(pPage, &rc); + releasePage(pPage); #else - if( pBt->autoVacuum ){ - Pgno maxRootPgno; - sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &maxRootPgno); + if( pBt->autoVacuum ){ + Pgno maxRootPgno; + sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &maxRootPgno); - if( iTable==maxRootPgno ){ - /* If the table being dropped is the table with the largest root-page - ** number in the database, put the root page on the free list. - */ - freePage(pPage, &rc); - releasePage(pPage); - if( rc!=SQLITE_OK ){ - return rc; - } - }else{ - /* The table being dropped does not have the largest root-page - ** number in the database. So move the page that does into the - ** gap left by the deleted root-page. - */ - MemPage *pMove; - releasePage(pPage); - rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = relocatePage(pBt, pMove, PTRMAP_ROOTPAGE, 0, iTable, 0); - releasePage(pMove); - if( rc!=SQLITE_OK ){ - return rc; - } - pMove = 0; - rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); - freePage(pMove, &rc); - releasePage(pMove); - if( rc!=SQLITE_OK ){ - return rc; - } - *piMoved = maxRootPgno; - } - - /* Set the new 'max-root-page' value in the database header. This - ** is the old value less one, less one more if that happens to - ** be a root-page number, less one again if that is the - ** PENDING_BYTE_PAGE. + if( iTable==maxRootPgno ){ + /* If the table being dropped is the table with the largest root-page + ** number in the database, put the root page on the free list. */ - maxRootPgno--; - while( maxRootPgno==PENDING_BYTE_PAGE(pBt) - || PTRMAP_ISPAGE(pBt, maxRootPgno) ){ - maxRootPgno--; - } - assert( maxRootPgno!=PENDING_BYTE_PAGE(pBt) ); - - rc = sqlite3BtreeUpdateMeta(p, 4, maxRootPgno); - }else{ freePage(pPage, &rc); releasePage(pPage); + if( rc!=SQLITE_OK ){ + return rc; + } + }else{ + /* The table being dropped does not have the largest root-page + ** number in the database. So move the page that does into the + ** gap left by the deleted root-page. + */ + MemPage *pMove; + releasePage(pPage); + rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); + if( rc!=SQLITE_OK ){ + return rc; + } + rc = relocatePage(pBt, pMove, PTRMAP_ROOTPAGE, 0, iTable, 0); + releasePage(pMove); + if( rc!=SQLITE_OK ){ + return rc; + } + pMove = 0; + rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); + freePage(pMove, &rc); + releasePage(pMove); + if( rc!=SQLITE_OK ){ + return rc; + } + *piMoved = maxRootPgno; } -#endif - }else{ - /* If sqlite3BtreeDropTable was called on page 1. - ** This really never should happen except in a corrupt - ** database. + + /* Set the new 'max-root-page' value in the database header. This + ** is the old value less one, less one more if that happens to + ** be a root-page number, less one again if that is the + ** PENDING_BYTE_PAGE. */ - zeroPage(pPage, PTF_INTKEY|PTF_LEAF ); + maxRootPgno--; + while( maxRootPgno==PENDING_BYTE_PAGE(pBt) + || PTRMAP_ISPAGE(pBt, maxRootPgno) ){ + maxRootPgno--; + } + assert( maxRootPgno!=PENDING_BYTE_PAGE(pBt) ); + + rc = sqlite3BtreeUpdateMeta(p, 4, maxRootPgno); + }else{ + freePage(pPage, &rc); releasePage(pPage); } +#endif return rc; } SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){ @@ -58278,6 +67616,13 @@ SQLITE_PRIVATE int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){ ** The schema layer numbers meta values differently. At the schema ** layer (and the SetCookie and ReadCookie opcodes) the number of ** free pages is not visible. So Cookie[0] is the same as Meta[1]. +** +** This routine treats Meta[BTREE_DATA_VERSION] as a special case. Instead +** of reading the value out of the header, it instead loads the "DataVersion" +** from the pager. The BTREE_DATA_VERSION value is not actually stored in the +** database file. It is a number computed by the pager. But its access +** pattern is the same as header meta values, and so it is convenient to +** read it from this routine. */ SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){ BtShared *pBt = p->pBt; @@ -58288,7 +67633,11 @@ SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){ assert( pBt->pPage1 ); assert( idx>=0 && idx<=15 ); - *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]); + if( idx==BTREE_DATA_VERSION ){ + *pMeta = sqlite3PagerDataVersion(pBt->pPager) + p->iDataVersion; + }else{ + *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]); + } /* If auto-vacuum is disabled in this build and this is an auto-vacuum ** database, mark the database as read-only. */ @@ -58379,7 +67728,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ if( pCur->iPage==0 ){ /* All pages of the b-tree have been visited. Return successfully. */ *pnEntry = nEntry; - return SQLITE_OK; + return moveToRoot(pCur); } moveToParent(pCur); }while ( pCur->aiIdx[pCur->iPage]>=pCur->apPage[pCur->iPage]->nCell ); @@ -58418,7 +67767,6 @@ SQLITE_PRIVATE Pager *sqlite3BtreePager(Btree *p){ */ static void checkAppendMsg( IntegrityCk *pCheck, - char *zMsg1, const char *zFormat, ... ){ @@ -58430,10 +67778,10 @@ static void checkAppendMsg( if( pCheck->errMsg.nChar ){ sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1); } - if( zMsg1 ){ - sqlite3StrAccumAppendAll(&pCheck->errMsg, zMsg1); + if( pCheck->zPfx ){ + sqlite3XPrintf(&pCheck->errMsg, pCheck->zPfx, pCheck->v1, pCheck->v2); } - sqlite3VXPrintf(&pCheck->errMsg, 1, zFormat, ap); + sqlite3VXPrintf(&pCheck->errMsg, zFormat, ap); va_end(ap); if( pCheck->errMsg.accError==STRACCUM_NOMEM ){ pCheck->mallocFailed = 1; @@ -58464,19 +67812,19 @@ static void setPageReferenced(IntegrityCk *pCheck, Pgno iPg){ /* ** Add 1 to the reference count for page iPage. If this is the second ** reference to the page, add an error message to pCheck->zErrMsg. -** Return 1 if there are 2 ore more references to the page and 0 if +** Return 1 if there are 2 or more references to the page and 0 if ** if this is the first reference to the page. ** ** Also check that the page number is in bounds. */ -static int checkRef(IntegrityCk *pCheck, Pgno iPage, char *zContext){ +static int checkRef(IntegrityCk *pCheck, Pgno iPage){ if( iPage==0 ) return 1; if( iPage>pCheck->nPage ){ - checkAppendMsg(pCheck, zContext, "invalid page number %d", iPage); + checkAppendMsg(pCheck, "invalid page number %d", iPage); return 1; } if( getPageReferenced(pCheck, iPage) ){ - checkAppendMsg(pCheck, zContext, "2nd reference to page %d", iPage); + checkAppendMsg(pCheck, "2nd reference to page %d", iPage); return 1; } setPageReferenced(pCheck, iPage); @@ -58493,8 +67841,7 @@ static void checkPtrmap( IntegrityCk *pCheck, /* Integrity check context */ Pgno iChild, /* Child page number */ u8 eType, /* Expected pointer map type */ - Pgno iParent, /* Expected pointer map parent page number */ - char *zContext /* Context description (used for error msg) */ + Pgno iParent /* Expected pointer map parent page number */ ){ int rc; u8 ePtrmapType; @@ -58503,12 +67850,12 @@ static void checkPtrmap( rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent); if( rc!=SQLITE_OK ){ if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->mallocFailed = 1; - checkAppendMsg(pCheck, zContext, "Failed to read ptrmap key=%d", iChild); + checkAppendMsg(pCheck, "Failed to read ptrmap key=%d", iChild); return; } if( ePtrmapType!=eType || iPtrmapParent!=iParent ){ - checkAppendMsg(pCheck, zContext, + checkAppendMsg(pCheck, "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)", iChild, eType, iParent, ePtrmapType, iPtrmapParent); } @@ -58523,8 +67870,7 @@ static void checkList( IntegrityCk *pCheck, /* Integrity checking context */ int isFreeList, /* True for a freelist. False for overflow page list */ int iPage, /* Page number for first page in the list */ - int N, /* Expected number of pages in the list */ - char *zContext /* Context for error messages */ + int N /* Expected number of pages in the list */ ){ int i; int expected = N; @@ -58533,14 +67879,14 @@ static void checkList( DbPage *pOvflPage; unsigned char *pOvflData; if( iPage<1 ){ - checkAppendMsg(pCheck, zContext, + checkAppendMsg(pCheck, "%d of %d pages missing from overflow list starting at %d", N+1, expected, iFirst); break; } - if( checkRef(pCheck, iPage, zContext) ) break; - if( sqlite3PagerGet(pCheck->pPager, (Pgno)iPage, &pOvflPage) ){ - checkAppendMsg(pCheck, zContext, "failed to get page %d", iPage); + if( checkRef(pCheck, iPage) ) break; + if( sqlite3PagerGet(pCheck->pPager, (Pgno)iPage, &pOvflPage, 0) ){ + checkAppendMsg(pCheck, "failed to get page %d", iPage); break; } pOvflData = (unsigned char *)sqlite3PagerGetData(pOvflPage); @@ -58548,11 +67894,11 @@ static void checkList( int n = get4byte(&pOvflData[4]); #ifndef SQLITE_OMIT_AUTOVACUUM if( pCheck->pBt->autoVacuum ){ - checkPtrmap(pCheck, iPage, PTRMAP_FREEPAGE, 0, zContext); + checkPtrmap(pCheck, iPage, PTRMAP_FREEPAGE, 0); } #endif if( n>(int)pCheck->pBt->usableSize/4-2 ){ - checkAppendMsg(pCheck, zContext, + checkAppendMsg(pCheck, "freelist leaf count too big on page %d", iPage); N--; }else{ @@ -58560,10 +67906,10 @@ static void checkList( Pgno iFreePage = get4byte(&pOvflData[8+i*4]); #ifndef SQLITE_OMIT_AUTOVACUUM if( pCheck->pBt->autoVacuum ){ - checkPtrmap(pCheck, iFreePage, PTRMAP_FREEPAGE, 0, zContext); + checkPtrmap(pCheck, iFreePage, PTRMAP_FREEPAGE, 0); } #endif - checkRef(pCheck, iFreePage, zContext); + checkRef(pCheck, iFreePage); } N -= n; } @@ -58576,16 +67922,71 @@ static void checkList( */ if( pCheck->pBt->autoVacuum && N>0 ){ i = get4byte(pOvflData); - checkPtrmap(pCheck, i, PTRMAP_OVERFLOW2, iPage, zContext); + checkPtrmap(pCheck, i, PTRMAP_OVERFLOW2, iPage); } } #endif iPage = get4byte(pOvflData); sqlite3PagerUnref(pOvflPage); + + if( isFreeList && N<(iPage!=0) ){ + checkAppendMsg(pCheck, "free-page count in header is too small"); + } } } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ +/* +** An implementation of a min-heap. +** +** aHeap[0] is the number of elements on the heap. aHeap[1] is the +** root element. The daughter nodes of aHeap[N] are aHeap[N*2] +** and aHeap[N*2+1]. +** +** The heap property is this: Every node is less than or equal to both +** of its daughter nodes. A consequence of the heap property is that the +** root node aHeap[1] is always the minimum value currently in the heap. +** +** The btreeHeapInsert() routine inserts an unsigned 32-bit number onto +** the heap, preserving the heap property. The btreeHeapPull() routine +** removes the root element from the heap (the minimum value in the heap) +** and then moves other nodes around as necessary to preserve the heap +** property. +** +** This heap is used for cell overlap and coverage testing. Each u32 +** entry represents the span of a cell or freeblock on a btree page. +** The upper 16 bits are the index of the first byte of a range and the +** lower 16 bits are the index of the last byte of that range. +*/ +static void btreeHeapInsert(u32 *aHeap, u32 x){ + u32 j, i = ++aHeap[0]; + aHeap[i] = x; + while( (j = i/2)>0 && aHeap[j]>aHeap[i] ){ + x = aHeap[j]; + aHeap[j] = aHeap[i]; + aHeap[i] = x; + i = j; + } +} +static int btreeHeapPull(u32 *aHeap, u32 *pOut){ + u32 j, i, x; + if( (x = aHeap[0])==0 ) return 0; + *pOut = aHeap[1]; + aHeap[1] = aHeap[x]; + aHeap[x] = 0xffffffff; + aHeap[0]--; + i = 1; + while( (j = i*2)<=aHeap[0] ){ + if( aHeap[j]>aHeap[j+1] ) j++; + if( aHeap[i]zPfx; + int saved_v1 = pCheck->v1; + int saved_v2 = pCheck->v2; + u8 savedIsInit = 0; /* Check that the page exists */ pBt = pCheck->pBt; usableSize = pBt->usableSize; if( iPage==0 ) return 0; - if( checkRef(pCheck, iPage, zParentContext) ) return 0; + if( checkRef(pCheck, iPage) ) return 0; + pCheck->zPfx = "Page %d: "; + pCheck->v1 = iPage; if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){ - checkAppendMsg(pCheck, zContext, + checkAppendMsg(pCheck, "unable to get the page. error code=%d", rc); - return 0; + goto end_of_check; } /* Clear MemPage.isInit to make sure the corruption detection code in ** btreeInitPage() is executed. */ + savedIsInit = pPage->isInit; pPage->isInit = 0; if( (rc = btreeInitPage(pPage))!=0 ){ assert( rc==SQLITE_CORRUPT ); /* The only possible error from InitPage */ - checkAppendMsg(pCheck, zContext, + checkAppendMsg(pCheck, "btreeInitPage() returns error code %d", rc); - releasePage(pPage); - return 0; + goto end_of_check; + } + data = pPage->aData; + hdr = pPage->hdrOffset; + + /* Set up for cell analysis */ + pCheck->zPfx = "On tree page %d cell %d: "; + contentOffset = get2byteNotZero(&data[hdr+5]); + assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */ + + /* EVIDENCE-OF: R-37002-32774 The two-byte integer at offset 3 gives the + ** number of cells on the page. */ + nCell = get2byte(&data[hdr+3]); + assert( pPage->nCell==nCell ); + + /* EVIDENCE-OF: R-23882-45353 The cell pointer array of a b-tree page + ** immediately follows the b-tree page header. */ + cellStart = hdr + 12 - 4*pPage->leaf; + assert( pPage->aCellIdx==&data[cellStart] ); + pCellIdx = &data[cellStart + 2*(nCell-1)]; + + if( !pPage->leaf ){ + /* Analyze the right-child page of internal pages */ + pgno = get4byte(&data[hdr+8]); +#ifndef SQLITE_OMIT_AUTOVACUUM + if( pBt->autoVacuum ){ + pCheck->zPfx = "On page %d at right child: "; + checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage); + } +#endif + depth = checkTreePage(pCheck, pgno, &maxKey, maxKey); + keyCanBeEqual = 0; + }else{ + /* For leaf pages, the coverage check will occur in the same loop + ** as the other cell checks, so initialize the heap. */ + heap = pCheck->heap; + heap[0] = 0; } - /* Check out all the cells. - */ - depth = 0; - for(i=0; inCell && pCheck->mxErr; i++){ - u8 *pCell; - u32 sz; + /* EVIDENCE-OF: R-02776-14802 The cell pointer array consists of K 2-byte + ** integer offsets to the cell contents. */ + for(i=nCell-1; i>=0 && pCheck->mxErr; i--){ CellInfo info; - /* Check payload overflow pages - */ - sqlite3_snprintf(sizeof(zContext), zContext, - "On tree page %d cell %d: ", iPage, i); - pCell = findCell(pPage,i); - btreeParseCellPtr(pPage, pCell, &info); - sz = info.nData; - if( !pPage->intKey ) sz += (int)info.nKey; - /* For intKey pages, check that the keys are in order. - */ - else if( i==0 ) nMinKey = nMaxKey = info.nKey; - else{ - if( info.nKey <= nMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (previous was %lld)", info.nKey, nMaxKey); - } - nMaxKey = info.nKey; + /* Check cell size */ + pCheck->v2 = i; + assert( pCellIdx==&data[cellStart + i*2] ); + pc = get2byteAligned(pCellIdx); + pCellIdx -= 2; + if( pcusableSize-4 ){ + checkAppendMsg(pCheck, "Offset %d out of range %d..%d", + pc, contentOffset, usableSize-4); + doCoverageCheck = 0; + continue; } - assert( sz==info.nPayload ); - if( (sz>info.nLocal) - && (&pCell[info.iOverflow]<=&pPage->aData[pBt->usableSize]) - ){ - int nPage = (sz - info.nLocal + usableSize - 5)/(usableSize - 4); - Pgno pgnoOvfl = get4byte(&pCell[info.iOverflow]); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgnoOvfl, PTRMAP_OVERFLOW1, iPage, zContext); - } -#endif - checkList(pCheck, 0, pgnoOvfl, nPage, zContext); + pCell = &data[pc]; + pPage->xParseCell(pPage, pCell, &info); + if( pc+info.nSize>usableSize ){ + checkAppendMsg(pCheck, "Extends off end of page"); + doCoverageCheck = 0; + continue; + } + + /* Check for integer primary key out of range */ + if( pPage->intKey ){ + if( keyCanBeEqual ? (info.nKey > maxKey) : (info.nKey >= maxKey) ){ + checkAppendMsg(pCheck, "Rowid %lld out of order", info.nKey); + } + maxKey = info.nKey; + } + + /* Check the content overflow list */ + if( info.nPayload>info.nLocal ){ + int nPage; /* Number of pages on the overflow chain */ + Pgno pgnoOvfl; /* First page of the overflow chain */ + assert( pc + info.nSize - 4 <= usableSize ); + nPage = (info.nPayload - info.nLocal + usableSize - 5)/(usableSize - 4); + pgnoOvfl = get4byte(&pCell[info.nSize - 4]); +#ifndef SQLITE_OMIT_AUTOVACUUM + if( pBt->autoVacuum ){ + checkPtrmap(pCheck, pgnoOvfl, PTRMAP_OVERFLOW1, iPage); + } +#endif + checkList(pCheck, 0, pgnoOvfl, nPage); } - /* Check sanity of left child page. - */ if( !pPage->leaf ){ + /* Check sanity of left child page for internal pages */ pgno = get4byte(pCell); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage, zContext); + checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage); } #endif - d2 = checkTreePage(pCheck, pgno, zContext, &nMinKey, i==0 ? NULL : &nMaxKey); - if( i>0 && d2!=depth ){ - checkAppendMsg(pCheck, zContext, "Child page depth differs"); - } - depth = d2; - } - } - - if( !pPage->leaf ){ - pgno = get4byte(&pPage->aData[pPage->hdrOffset+8]); - sqlite3_snprintf(sizeof(zContext), zContext, - "On page %d at right child: ", iPage); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage, zContext); - } -#endif - checkTreePage(pCheck, pgno, zContext, NULL, !pPage->nCell ? NULL : &nMaxKey); - } - - /* For intKey leaf pages, check that the min/max keys are in order - ** with any left/parent/right pages. - */ - if( pPage->leaf && pPage->intKey ){ - /* if we are a left child page */ - if( pnParentMinKey ){ - /* if we are the left most child page */ - if( !pnParentMaxKey ){ - if( nMaxKey > *pnParentMinKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (max larger than parent min of %lld)", - nMaxKey, *pnParentMinKey); - } - }else{ - if( nMinKey <= *pnParentMinKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (min less than parent min of %lld)", - nMinKey, *pnParentMinKey); - } - if( nMaxKey > *pnParentMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (max larger than parent max of %lld)", - nMaxKey, *pnParentMaxKey); - } - *pnParentMinKey = nMaxKey; - } - /* else if we're a right child page */ - } else if( pnParentMaxKey ){ - if( nMinKey <= *pnParentMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (min less than parent max of %lld)", - nMinKey, *pnParentMaxKey); + d2 = checkTreePage(pCheck, pgno, &maxKey, maxKey); + keyCanBeEqual = 0; + if( d2!=depth ){ + checkAppendMsg(pCheck, "Child page depth differs"); + depth = d2; } + }else{ + /* Populate the coverage-checking heap for leaf pages */ + btreeHeapInsert(heap, (pc<<16)|(pc+info.nSize-1)); } } + *piMinKey = maxKey; /* Check for complete coverage of the page */ - data = pPage->aData; - hdr = pPage->hdrOffset; - hit = sqlite3PageMalloc( pBt->pageSize ); - if( hit==0 ){ - pCheck->mallocFailed = 1; - }else{ - int contentOffset = get2byteNotZero(&data[hdr+5]); - assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */ - memset(hit+contentOffset, 0, usableSize-contentOffset); - memset(hit, 1, contentOffset); - nCell = get2byte(&data[hdr+3]); - cellStart = hdr + 12 - 4*pPage->leaf; - for(i=0; i=usableSize ){ - checkAppendMsg(pCheck, 0, - "Corruption detected in cell %d on page %d",i,iPage); - }else{ - for(j=pc+size-1; j>=pc; j--) hit[j]++; + pCheck->zPfx = 0; + if( doCoverageCheck && pCheck->mxErr>0 ){ + /* For leaf pages, the min-heap has already been initialized and the + ** cells have already been inserted. But for internal pages, that has + ** not yet been done, so do it now */ + if( !pPage->leaf ){ + heap = pCheck->heap; + heap[0] = 0; + for(i=nCell-1; i>=0; i--){ + u32 size; + pc = get2byteAligned(&data[cellStart+i*2]); + size = pPage->xCellSize(pPage, &data[pc]); + btreeHeapInsert(heap, (pc<<16)|(pc+size-1)); } } + /* Add the freeblocks to the min-heap + ** + ** EVIDENCE-OF: R-20690-50594 The second field of the b-tree page header + ** is the offset of the first freeblock, or zero if there are no + ** freeblocks on the page. + */ i = get2byte(&data[hdr+1]); while( i>0 ){ int size, j; - assert( i<=usableSize-4 ); /* Enforced by btreeInitPage() */ + assert( (u32)i<=usableSize-4 ); /* Enforced by btreeInitPage() */ size = get2byte(&data[i+2]); - assert( i+size<=usableSize ); /* Enforced by btreeInitPage() */ - for(j=i+size-1; j>=i; j--) hit[j]++; + assert( (u32)(i+size)<=usableSize ); /* Enforced by btreeInitPage() */ + btreeHeapInsert(heap, (((u32)i)<<16)|(i+size-1)); + /* EVIDENCE-OF: R-58208-19414 The first 2 bytes of a freeblock are a + ** big-endian integer which is the offset in the b-tree page of the next + ** freeblock in the chain, or zero if the freeblock is the last on the + ** chain. */ j = get2byte(&data[i]); + /* EVIDENCE-OF: R-06866-39125 Freeblocks are always connected in order of + ** increasing offset. */ assert( j==0 || j>i+size ); /* Enforced by btreeInitPage() */ - assert( j<=usableSize-4 ); /* Enforced by btreeInitPage() */ + assert( (u32)j<=usableSize-4 ); /* Enforced by btreeInitPage() */ i = j; } - for(i=cnt=0; i1 ){ - checkAppendMsg(pCheck, 0, - "Multiple uses for byte %d of page %d", i, iPage); + /* Analyze the min-heap looking for overlap between cells and/or + ** freeblocks, and counting the number of untracked bytes in nFrag. + ** + ** Each min-heap entry is of the form: (start_address<<16)|end_address. + ** There is an implied first entry the covers the page header, the cell + ** pointer index, and the gap between the cell pointer index and the start + ** of cell content. + ** + ** The loop below pulls entries from the min-heap in order and compares + ** the start_address against the previous end_address. If there is an + ** overlap, that means bytes are used multiple times. If there is a gap, + ** that gap is added to the fragmentation count. + */ + nFrag = 0; + prev = contentOffset - 1; /* Implied first min-heap entry */ + while( btreeHeapPull(heap,&x) ){ + if( (prev&0xffff)>=(x>>16) ){ + checkAppendMsg(pCheck, + "Multiple uses for byte %u of page %d", x>>16, iPage); break; + }else{ + nFrag += (x>>16) - (prev&0xffff) - 1; + prev = x; } } - if( cnt!=data[hdr+7] ){ - checkAppendMsg(pCheck, 0, + nFrag += usableSize - (prev&0xffff) - 1; + /* EVIDENCE-OF: R-43263-13491 The total number of bytes in all fragments + ** is stored in the fifth field of the b-tree page header. + ** EVIDENCE-OF: R-07161-27322 The one-byte integer at offset 7 gives the + ** number of fragmented free bytes within the cell content area. + */ + if( heap[0]==0 && nFrag!=data[hdr+7] ){ + checkAppendMsg(pCheck, "Fragmentation of %d bytes reported as %d on page %d", - cnt, data[hdr+7], iPage); + nFrag, data[hdr+7], iPage); } } - sqlite3PageFree(hit); + +end_of_check: + if( !doCoverageCheck ) pPage->isInit = savedIsInit; releasePage(pPage); + pCheck->zPfx = saved_zPfx; + pCheck->v1 = saved_v1; + pCheck->v2 = saved_v2; return depth+1; } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -58837,60 +68274,76 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( int *pnErr /* Write number of errors seen to this variable */ ){ Pgno i; - int nRef; IntegrityCk sCheck; BtShared *pBt = p->pBt; + int savedDbFlags = pBt->db->flags; char zErr[100]; + VVA_ONLY( int nRef ); sqlite3BtreeEnter(p); assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE ); - nRef = sqlite3PagerRefcount(pBt->pPager); + VVA_ONLY( nRef = sqlite3PagerRefcount(pBt->pPager) ); + assert( nRef>=0 ); sCheck.pBt = pBt; sCheck.pPager = pBt->pPager; sCheck.nPage = btreePagecount(sCheck.pBt); sCheck.mxErr = mxErr; sCheck.nErr = 0; sCheck.mallocFailed = 0; - *pnErr = 0; + sCheck.zPfx = 0; + sCheck.v1 = 0; + sCheck.v2 = 0; + sCheck.aPgRef = 0; + sCheck.heap = 0; + sqlite3StrAccumInit(&sCheck.errMsg, 0, zErr, sizeof(zErr), SQLITE_MAX_LENGTH); + sCheck.errMsg.printfFlags = SQLITE_PRINTF_INTERNAL; if( sCheck.nPage==0 ){ - sqlite3BtreeLeave(p); - return 0; + goto integrity_ck_cleanup; } sCheck.aPgRef = sqlite3MallocZero((sCheck.nPage / 8)+ 1); if( !sCheck.aPgRef ){ - *pnErr = 1; - sqlite3BtreeLeave(p); - return 0; + sCheck.mallocFailed = 1; + goto integrity_ck_cleanup; } + sCheck.heap = (u32*)sqlite3PageMalloc( pBt->pageSize ); + if( sCheck.heap==0 ){ + sCheck.mallocFailed = 1; + goto integrity_ck_cleanup; + } + i = PENDING_BYTE_PAGE(pBt); if( i<=sCheck.nPage ) setPageReferenced(&sCheck, i); - sqlite3StrAccumInit(&sCheck.errMsg, zErr, sizeof(zErr), SQLITE_MAX_LENGTH); - sCheck.errMsg.useMalloc = 2; /* Check the integrity of the freelist */ + sCheck.zPfx = "Main freelist: "; checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]), - get4byte(&pBt->pPage1->aData[36]), "Main freelist: "); + get4byte(&pBt->pPage1->aData[36])); + sCheck.zPfx = 0; /* Check all the tables. */ + testcase( pBt->db->flags & SQLITE_CellSizeCk ); + pBt->db->flags &= ~SQLITE_CellSizeCk; for(i=0; (int)iautoVacuum && aRoot[i]>1 ){ - checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0, 0); + checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0); } #endif - checkTreePage(&sCheck, aRoot[i], "List of tree roots: ", NULL, NULL); + checkTreePage(&sCheck, aRoot[i], ¬Used, LARGEST_INT64); } + pBt->db->flags = savedDbFlags; /* Make sure every page in the file is referenced */ for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){ #ifdef SQLITE_OMIT_AUTOVACUUM if( getPageReferenced(&sCheck, i)==0 ){ - checkAppendMsg(&sCheck, 0, "Page %d is never used", i); + checkAppendMsg(&sCheck, "Page %d is never used", i); } #else /* If the database supports auto-vacuum, make sure no tables contain @@ -58898,37 +68351,29 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( */ if( getPageReferenced(&sCheck, i)==0 && (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, 0, "Page %d is never used", i); + checkAppendMsg(&sCheck, "Page %d is never used", i); } if( getPageReferenced(&sCheck, i)!=0 && (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, 0, "Pointer map page %d is referenced", i); + checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i); } #endif } - /* Make sure this analysis did not leave any unref() pages. - ** This is an internal consistency check; an integrity check - ** of the integrity check. - */ - if( NEVER(nRef != sqlite3PagerRefcount(pBt->pPager)) ){ - checkAppendMsg(&sCheck, 0, - "Outstanding page count goes from %d to %d during this analysis", - nRef, sqlite3PagerRefcount(pBt->pPager) - ); - } - /* Clean up and report errors. */ - sqlite3BtreeLeave(p); +integrity_ck_cleanup: + sqlite3PageFree(sCheck.heap); sqlite3_free(sCheck.aPgRef); if( sCheck.mallocFailed ){ sqlite3StrAccumReset(&sCheck.errMsg); - *pnErr = sCheck.nErr+1; - return 0; + sCheck.nErr++; } *pnErr = sCheck.nErr; if( sCheck.nErr==0 ) sqlite3StrAccumReset(&sCheck.errMsg); + /* Make sure this analysis did not leave any unref() pages. */ + assert( nRef==sqlite3PagerRefcount(pBt->pPager) ); + sqlite3BtreeLeave(p); return sqlite3StrAccumFinish(&sCheck.errMsg); } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -58983,7 +68428,7 @@ SQLITE_PRIVATE int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int * if( pBt->inTransaction!=TRANS_NONE ){ rc = SQLITE_LOCKED; }else{ - rc = sqlite3PagerCheckpoint(pBt->pPager, eMode, pnLog, pnCkpt); + rc = sqlite3PagerCheckpoint(pBt->pPager, p->db, eMode, pnLog, pnCkpt); } sqlite3BtreeLeave(p); } @@ -59091,9 +68536,9 @@ SQLITE_PRIVATE int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){ */ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){ int rc; - assert( cursorHoldsMutex(pCsr) ); + assert( cursorOwnsBtShared(pCsr) ); assert( sqlite3_mutex_held(pCsr->pBtree->db->mutex) ); - assert( pCsr->isIncrblobHandle ); + assert( pCsr->curFlags & BTCF_Incrblob ); rc = restoreCursorPosition(pCsr); if( rc!=SQLITE_OK ){ @@ -59108,7 +68553,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void ** required in case any of them are holding references to an xFetch ** version of the b-tree page modified by the accessPayload call below. ** - ** Note that pCsr must be open on a BTREE_INTKEY table and saveCursorPosition() + ** Note that pCsr must be open on a INTKEY table and saveCursorPosition() ** and hence saveAllCursors() cannot fail on a BTREE_INTKEY table, hence ** saveAllCursors can only return SQLITE_OK. */ @@ -59122,7 +68567,7 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void ** (d) there are no conflicting read-locks, and ** (e) the cursor points at a valid row of an intKey table. */ - if( !pCsr->wrFlag ){ + if( (pCsr->curFlags & BTCF_WriteFlag)==0 ){ return SQLITE_READONLY; } assert( (pCsr->pBt->btsFlags & BTS_READ_ONLY)==0 @@ -59135,20 +68580,11 @@ SQLITE_PRIVATE int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void } /* -** Set a flag on this cursor to cache the locations of pages from the -** overflow list for the current row. This is used by cursors opened -** for incremental blob IO only. -** -** This function sets a flag only. The actual page location cache -** (stored in BtCursor.aOverflow[]) is allocated and used by function -** accessPayload() (the worker function for sqlite3BtreeData() and -** sqlite3BtreePutData()). +** Mark this cursor as an incremental blob cursor. */ -SQLITE_PRIVATE void sqlite3BtreeCacheOverflow(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - invalidateOverflowCache(pCur); - pCur->isIncrblobHandle = 1; +SQLITE_PRIVATE void sqlite3BtreeIncrblobCursor(BtCursor *pCur){ + pCur->curFlags |= BTCF_Incrblob; + pCur->pBtree->hasIncrblobCur = 1; } #endif @@ -59189,14 +68625,44 @@ SQLITE_PRIVATE int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){ } /* -** set the mask of hint flags for cursor pCsr. Currently the only valid -** values are 0 and BTREE_BULKLOAD. +** Return true if the cursor has a hint specified. This routine is +** only used from within assert() statements */ -SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *pCsr, unsigned int mask){ - assert( mask==BTREE_BULKLOAD || mask==0 ); - pCsr->hints = mask; +SQLITE_PRIVATE int sqlite3BtreeCursorHasHint(BtCursor *pCsr, unsigned int mask){ + return (pCsr->hints & mask)!=0; } +/* +** Return true if the given Btree is read-only. +*/ +SQLITE_PRIVATE int sqlite3BtreeIsReadonly(Btree *p){ + return (p->pBt->btsFlags & BTS_READ_ONLY)!=0; +} + +/* +** Return the size of the header added to each page by this module. +*/ +SQLITE_PRIVATE int sqlite3HeaderSizeBtree(void){ return ROUND8(sizeof(MemPage)); } + +#if !defined(SQLITE_OMIT_SHARED_CACHE) +/* +** Return true if the Btree passed as the only argument is sharable. +*/ +SQLITE_PRIVATE int sqlite3BtreeSharable(Btree *p){ + return p->sharable; +} + +/* +** Return the number of connections to the BtShared object accessed by +** the Btree handle passed as the only argument. For private caches +** this is always 1. For shared caches it may be 1 or greater. +*/ +SQLITE_PRIVATE int sqlite3BtreeConnectionCount(Btree *p){ + testcase( p->sharable ); + return p->pBt->nRef; +} +#endif + /************** End of btree.c ***********************************************/ /************** Begin file backup.c ******************************************/ /* @@ -59213,6 +68679,8 @@ SQLITE_PRIVATE void sqlite3BtreeCursorHints(BtCursor *pCsr, unsigned int mask){ ** This file contains the implementation of the sqlite3_backup_XXX() ** API functions and the related features. */ +/* #include "sqliteInt.h" */ +/* #include "btreeInt.h" */ /* ** Structure allocated for each backup operation. @@ -59282,29 +68750,23 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){ int i = sqlite3FindDbName(pDb, zDb); if( i==1 ){ - Parse *pParse; + Parse sParse; int rc = 0; - pParse = sqlite3StackAllocZero(pErrorDb, sizeof(*pParse)); - if( pParse==0 ){ - sqlite3Error(pErrorDb, SQLITE_NOMEM, "out of memory"); - rc = SQLITE_NOMEM; - }else{ - pParse->db = pDb; - if( sqlite3OpenTempDatabase(pParse) ){ - sqlite3Error(pErrorDb, pParse->rc, "%s", pParse->zErrMsg); - rc = SQLITE_ERROR; - } - sqlite3DbFree(pErrorDb, pParse->zErrMsg); - sqlite3ParserReset(pParse); - sqlite3StackFree(pErrorDb, pParse); + memset(&sParse, 0, sizeof(sParse)); + sParse.db = pDb; + if( sqlite3OpenTempDatabase(&sParse) ){ + sqlite3ErrorWithMsg(pErrorDb, sParse.rc, "%s", sParse.zErrMsg); + rc = SQLITE_ERROR; } + sqlite3DbFree(pErrorDb, sParse.zErrMsg); + sqlite3ParserReset(&sParse); if( rc ){ return 0; } } if( i<0 ){ - sqlite3Error(pErrorDb, SQLITE_ERROR, "unknown database %s", zDb); + sqlite3ErrorWithMsg(pErrorDb, SQLITE_ERROR, "unknown database %s", zDb); return 0; } @@ -59321,6 +68783,20 @@ static int setDestPgsz(sqlite3_backup *p){ return rc; } +/* +** Check that there is no open read-transaction on the b-tree passed as the +** second argument. If there is not, return SQLITE_OK. Otherwise, if there +** is an open read-transaction, return SQLITE_ERROR and leave an error +** message in database handle db. +*/ +static int checkReadTransaction(sqlite3 *db, Btree *p){ + if( sqlite3BtreeIsInReadTrans(p) ){ + sqlite3ErrorWithMsg(db, SQLITE_ERROR, "destination database is in use"); + return SQLITE_ERROR; + } + return SQLITE_OK; +} + /* ** Create an sqlite3_backup process to copy the contents of zSrcDb from ** connection handle pSrcDb to zDestDb in pDestDb. If successful, return @@ -59337,6 +68813,13 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( ){ sqlite3_backup *p; /* Value to return */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(pSrcDb)||!sqlite3SafetyCheckOk(pDestDb) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + /* Lock the source database handle. The destination database ** handle is not locked in this routine, but it is locked in ** sqlite3_backup_step(). The user is required to ensure that no @@ -59349,7 +68832,7 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( sqlite3_mutex_enter(pDestDb->mutex); if( pSrcDb==pDestDb ){ - sqlite3Error( + sqlite3ErrorWithMsg( pDestDb, SQLITE_ERROR, "source and destination must be distinct" ); p = 0; @@ -59360,7 +68843,7 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( ** sqlite3_backup_finish(). */ p = (sqlite3_backup *)sqlite3MallocZero(sizeof(sqlite3_backup)); if( !p ){ - sqlite3Error(pDestDb, SQLITE_NOMEM, 0); + sqlite3Error(pDestDb, SQLITE_NOMEM_BKPT); } } @@ -59373,12 +68856,14 @@ SQLITE_API sqlite3_backup *sqlite3_backup_init( p->iNext = 1; p->isAttached = 0; - if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){ + if( 0==p->pSrc || 0==p->pDest + || checkReadTransaction(pDestDb, p->pDest)!=SQLITE_OK + ){ /* One (or both) of the named databases did not exist or an OOM - ** error was hit. The error has already been written into the - ** pDestDb handle. All that is left to do here is free the - ** sqlite3_backup structure. - */ + ** error was hit. Or there is a transaction open on the destination + ** database. The error has already been written into the pDestDb + ** handle. All that is left to do here is free the sqlite3_backup + ** structure. */ sqlite3_free(p); p = 0; } @@ -59422,7 +68907,7 @@ static int backupOnePage( ** guaranteed that the shared-mutex is held by this thread, handle ** p->pSrc may not actually be the owner. */ int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc); - int nDestReserve = sqlite3BtreeGetReserve(p->pDest); + int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest); #endif int rc = SQLITE_OK; i64 iOff; @@ -59468,7 +68953,7 @@ static int backupOnePage( DbPage *pDestPg = 0; Pgno iDest = (Pgno)(iOff/nDestPgsz)+1; if( iDest==PENDING_BYTE_PAGE(p->pDest->pBt) ) continue; - if( SQLITE_OK==(rc = sqlite3PagerGet(pDestPager, iDest, &pDestPg)) + if( SQLITE_OK==(rc = sqlite3PagerGet(pDestPager, iDest, &pDestPg, 0)) && SQLITE_OK==(rc = sqlite3PagerWrite(pDestPg)) ){ const u8 *zIn = &zSrcData[iOff%nSrcPgsz]; @@ -59533,6 +69018,9 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ int pgszSrc = 0; /* Source page size */ int pgszDest = 0; /* Destination page size */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( p==0 ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(p->pSrcDb->mutex); sqlite3BtreeEnter(p->pSrc); if( p->pDestDb ){ @@ -59556,14 +69044,6 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ rc = SQLITE_OK; } - /* Lock the destination database, if it is not locked already. */ - if( SQLITE_OK==rc && p->bDestLocked==0 - && SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2)) - ){ - p->bDestLocked = 1; - sqlite3BtreeGetMeta(p->pDest, BTREE_SCHEMA_VERSION, &p->iDestSchema); - } - /* If there is no open read-transaction on the source database, open ** one now. If a transaction is opened here, then it will be closed ** before this function exits. @@ -59573,6 +69053,24 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ bCloseTrans = 1; } + /* If the destination database has not yet been locked (i.e. if this + ** is the first call to backup_step() for the current backup operation), + ** try to set its page size to the same as the source database. This + ** is especially important on ZipVFS systems, as in that case it is + ** not possible to create a database file that uses one page size by + ** writing to it with another. */ + if( p->bDestLocked==0 && rc==SQLITE_OK && setDestPgsz(p)==SQLITE_NOMEM ){ + rc = SQLITE_NOMEM; + } + + /* Lock the destination database, if it is not locked already. */ + if( SQLITE_OK==rc && p->bDestLocked==0 + && SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2)) + ){ + p->bDestLocked = 1; + sqlite3BtreeGetMeta(p->pDest, BTREE_SCHEMA_VERSION, &p->iDestSchema); + } + /* Do not allow backup if the destination database is in WAL mode ** and the page sizes are different between source and destination */ pgszSrc = sqlite3BtreeGetPageSize(p->pSrc); @@ -59591,8 +69089,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ const Pgno iSrcPg = p->iNext; /* Source page number */ if( iSrcPg!=PENDING_BYTE_PAGE(p->pSrc->pBt) ){ DbPage *pSrcPg; /* Source page object */ - rc = sqlite3PagerAcquire(pSrcPager, iSrcPg, &pSrcPg, - PAGER_GET_READONLY); + rc = sqlite3PagerGet(pSrcPager, iSrcPg, &pSrcPg,PAGER_GET_READONLY); if( rc==SQLITE_OK ){ rc = backupOnePage(p, iSrcPg, sqlite3PagerGetData(pSrcPg), 0); sqlite3PagerUnref(pSrcPg); @@ -59692,7 +69189,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ for(iPg=nDestTruncate; rc==SQLITE_OK && iPg<=(Pgno)nDstPage; iPg++){ if( iPg!=PENDING_BYTE_PAGE(p->pDest->pBt) ){ DbPage *pPg; - rc = sqlite3PagerGet(pDestPager, iPg, &pPg); + rc = sqlite3PagerGet(pDestPager, iPg, &pPg, 0); if( rc==SQLITE_OK ){ rc = sqlite3PagerWrite(pPg); sqlite3PagerUnref(pPg); @@ -59712,7 +69209,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ ){ PgHdr *pSrcPg = 0; const Pgno iSrcPg = (Pgno)((iOff/pgszSrc)+1); - rc = sqlite3PagerGet(pSrcPager, iSrcPg, &pSrcPg); + rc = sqlite3PagerGet(pSrcPager, iSrcPg, &pSrcPg, 0); if( rc==SQLITE_OK ){ u8 *zData = sqlite3PagerGetData(pSrcPg); rc = sqlite3OsWrite(pFile, zData, pgszSrc, iOff); @@ -59754,7 +69251,7 @@ SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage){ } if( rc==SQLITE_IOERR_NOMEM ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } p->rc = rc; } @@ -59796,12 +69293,12 @@ SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){ } /* If a transaction is still open on the Btree, roll it back. */ - sqlite3BtreeRollback(p->pDest, SQLITE_OK); + sqlite3BtreeRollback(p->pDest, SQLITE_OK, 0); /* Set the error code of the destination database handle. */ rc = (p->rc==SQLITE_DONE) ? SQLITE_OK : p->rc; if( p->pDestDb ){ - sqlite3Error(p->pDestDb, rc, 0); + sqlite3Error(p->pDestDb, rc); /* Exit the mutexes and free the backup context structure. */ sqlite3LeaveMutexAndCloseZombie(p->pDestDb); @@ -59822,6 +69319,12 @@ SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p){ ** call to sqlite3_backup_step(). */ SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( p==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return p->nRemaining; } @@ -59830,6 +69333,12 @@ SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p){ ** recent call to sqlite3_backup_step(). */ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( p==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return p->nPagecount; } @@ -59845,9 +69354,13 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p){ ** corresponding to the source database is held when this function is ** called. */ -SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){ - sqlite3_backup *p; /* Iterator variable */ - for(p=pBackup; p; p=p->pNext){ +static SQLITE_NOINLINE void backupUpdate( + sqlite3_backup *p, + Pgno iPage, + const u8 *aData +){ + assert( p!=0 ); + do{ assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) ); if( !isFatalError(p->rc) && iPageiNext ){ /* The backup process p has already copied page iPage. But now it @@ -59864,7 +69377,10 @@ SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, con p->rc = rc; } } - } + }while( (p = p->pNext)!=0 ); +} +SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){ + if( pBackup ) backupUpdate(pBackup, iPage, aData); } /* @@ -59922,15 +69438,19 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ b.pDest = pTo; b.iNext = 1; +#ifdef SQLITE_HAS_CODEC + sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom)); +#endif + /* 0x7FFFFFFF is the hard limit for the number of pages in a database ** file. By passing this as the number of pages to copy to ** sqlite3_backup_step(), we can guarantee that the copy finishes ** within a single call (unless an error occurs). The assert() statement ** checks this assumption - (p->rc) should be set to either SQLITE_DONE - ** or an error code. - */ + ** or an error code. */ sqlite3_backup_step(&b, 0x7FFFFFFF); assert( b.rc!=SQLITE_OK ); + rc = sqlite3_backup_finish(&b); if( rc==SQLITE_OK ){ pTo->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED; @@ -59965,6 +69485,55 @@ copy_finished: ** only within the VDBE. Interface routines refer to a Mem using the ** name sqlite_value */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ + +#ifdef SQLITE_DEBUG +/* +** Check invariants on a Mem object. +** +** This routine is intended for use inside of assert() statements, like +** this: assert( sqlite3VdbeCheckMemInvariants(pMem) ); +*/ +SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){ + /* If MEM_Dyn is set then Mem.xDel!=0. + ** Mem.xDel is might not be initialized if MEM_Dyn is clear. + */ + assert( (p->flags & MEM_Dyn)==0 || p->xDel!=0 ); + + /* MEM_Dyn may only be set if Mem.szMalloc==0. In this way we + ** ensure that if Mem.szMalloc>0 then it is safe to do + ** Mem.z = Mem.zMalloc without having to check Mem.flags&MEM_Dyn. + ** That saves a few cycles in inner loops. */ + assert( (p->flags & MEM_Dyn)==0 || p->szMalloc==0 ); + + /* Cannot be both MEM_Int and MEM_Real at the same time */ + assert( (p->flags & (MEM_Int|MEM_Real))!=(MEM_Int|MEM_Real) ); + + /* The szMalloc field holds the correct memory allocation size */ + assert( p->szMalloc==0 + || p->szMalloc==sqlite3DbMallocSize(p->db,p->zMalloc) ); + + /* If p holds a string or blob, the Mem.z must point to exactly + ** one of the following: + ** + ** (1) Memory in Mem.zMalloc and managed by the Mem object + ** (2) Memory to be freed using Mem.xDel + ** (3) An ephemeral string or blob + ** (4) A static string or blob + */ + if( (p->flags & (MEM_Str|MEM_Blob)) && p->n>0 ){ + assert( + ((p->szMalloc>0 && p->z==p->zMalloc)? 1 : 0) + + ((p->flags&MEM_Dyn)!=0 ? 1 : 0) + + ((p->flags&MEM_Ephem)!=0 ? 1 : 0) + + ((p->flags&MEM_Static)!=0 ? 1 : 0) == 1 + ); + } + return 1; +} +#endif + /* ** If pMem is an object with a valid string representation, this routine @@ -60014,75 +69583,99 @@ SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *pMem, int desiredEnc){ ** blob if bPreserve is true. If bPreserve is false, any prior content ** in pMem->z is discarded. */ -SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPreserve){ - assert( 1 >= - ((pMem->zMalloc && pMem->zMalloc==pMem->z) ? 1 : 0) + - (((pMem->flags&MEM_Dyn)&&pMem->xDel) ? 1 : 0) + - ((pMem->flags&MEM_Ephem) ? 1 : 0) + - ((pMem->flags&MEM_Static) ? 1 : 0) - ); +SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemGrow(Mem *pMem, int n, int bPreserve){ + assert( sqlite3VdbeCheckMemInvariants(pMem) ); assert( (pMem->flags&MEM_RowSet)==0 ); + testcase( pMem->db==0 ); /* If the bPreserve flag is set to true, then the memory cell must already ** contain a valid string or blob value. */ assert( bPreserve==0 || pMem->flags&(MEM_Blob|MEM_Str) ); testcase( bPreserve && pMem->z==0 ); - if( pMem->zMalloc==0 || sqlite3DbMallocSize(pMem->db, pMem->zMalloc)szMalloc==0 + || pMem->szMalloc==sqlite3DbMallocSize(pMem->db, pMem->zMalloc) ); + if( pMem->szMallocz==pMem->zMalloc ){ + if( bPreserve && pMem->szMalloc>0 && pMem->z==pMem->zMalloc ){ pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n); bPreserve = 0; }else{ - sqlite3DbFree(pMem->db, pMem->zMalloc); + if( pMem->szMalloc>0 ) sqlite3DbFree(pMem->db, pMem->zMalloc); pMem->zMalloc = sqlite3DbMallocRaw(pMem->db, n); } if( pMem->zMalloc==0 ){ - sqlite3VdbeMemRelease(pMem); - pMem->flags = MEM_Null; - return SQLITE_NOMEM; + sqlite3VdbeMemSetNull(pMem); + pMem->z = 0; + pMem->szMalloc = 0; + return SQLITE_NOMEM_BKPT; + }else{ + pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->zMalloc); } } - if( pMem->z && bPreserve && pMem->z!=pMem->zMalloc ){ + if( bPreserve && pMem->z && pMem->z!=pMem->zMalloc ){ memcpy(pMem->zMalloc, pMem->z, pMem->n); } - if( (pMem->flags&MEM_Dyn)!=0 && pMem->xDel ){ - assert( pMem->xDel!=SQLITE_DYNAMIC ); + if( (pMem->flags&MEM_Dyn)!=0 ){ + assert( pMem->xDel!=0 && pMem->xDel!=SQLITE_DYNAMIC ); pMem->xDel((void *)(pMem->z)); } pMem->z = pMem->zMalloc; - pMem->flags &= ~(MEM_Ephem|MEM_Static); - pMem->xDel = 0; + pMem->flags &= ~(MEM_Dyn|MEM_Ephem|MEM_Static); return SQLITE_OK; } /* -** Make the given Mem object MEM_Dyn. In other words, make it so -** that any TEXT or BLOB content is stored in memory obtained from -** malloc(). In this way, we know that the memory is safe to be -** overwritten or altered. +** Change the pMem->zMalloc allocation to be at least szNew bytes. +** If pMem->zMalloc already meets or exceeds the requested size, this +** routine is a no-op. +** +** Any prior string or blob content in the pMem object may be discarded. +** The pMem->xDel destructor is called, if it exists. Though MEM_Str +** and MEM_Blob values may be discarded, MEM_Int, MEM_Real, and MEM_Null +** values are preserved. +** +** Return SQLITE_OK on success or an error code (probably SQLITE_NOMEM) +** if unable to complete the resizing. +*/ +SQLITE_PRIVATE int sqlite3VdbeMemClearAndResize(Mem *pMem, int szNew){ + assert( szNew>0 ); + assert( (pMem->flags & MEM_Dyn)==0 || pMem->szMalloc==0 ); + if( pMem->szMallocflags & MEM_Dyn)==0 ); + pMem->z = pMem->zMalloc; + pMem->flags &= (MEM_Null|MEM_Int|MEM_Real); + return SQLITE_OK; +} + +/* +** Change pMem so that its MEM_Str or MEM_Blob value is stored in +** MEM.zMalloc, where it can be safely written. ** ** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. */ SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem *pMem){ - int f; assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( (pMem->flags&MEM_RowSet)==0 ); - ExpandBlob(pMem); - f = pMem->flags; - if( (f&(MEM_Str|MEM_Blob)) && pMem->z!=pMem->zMalloc ){ - if( sqlite3VdbeMemGrow(pMem, pMem->n + 2, 1) ){ - return SQLITE_NOMEM; + if( (pMem->flags & (MEM_Str|MEM_Blob))!=0 ){ + if( ExpandBlob(pMem) ) return SQLITE_NOMEM; + if( pMem->szMalloc==0 || pMem->z!=pMem->zMalloc ){ + if( sqlite3VdbeMemGrow(pMem, pMem->n + 2, 1) ){ + return SQLITE_NOMEM_BKPT; + } + pMem->z[pMem->n] = 0; + pMem->z[pMem->n+1] = 0; + pMem->flags |= MEM_Term; } - pMem->z[pMem->n] = 0; - pMem->z[pMem->n+1] = 0; - pMem->flags |= MEM_Term; -#ifdef SQLITE_DEBUG - pMem->pScopyFrom = 0; -#endif } + pMem->flags &= ~MEM_Ephem; +#ifdef SQLITE_DEBUG + pMem->pScopyFrom = 0; +#endif return SQLITE_OK; } @@ -60093,40 +69686,35 @@ SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem *pMem){ */ #ifndef SQLITE_OMIT_INCRBLOB SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *pMem){ - if( pMem->flags & MEM_Zero ){ - int nByte; - assert( pMem->flags&MEM_Blob ); - assert( (pMem->flags&MEM_RowSet)==0 ); - assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); + int nByte; + assert( pMem->flags & MEM_Zero ); + assert( pMem->flags&MEM_Blob ); + assert( (pMem->flags&MEM_RowSet)==0 ); + assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - /* Set nByte to the number of bytes required to store the expanded blob. */ - nByte = pMem->n + pMem->u.nZero; - if( nByte<=0 ){ - nByte = 1; - } - if( sqlite3VdbeMemGrow(pMem, nByte, 1) ){ - return SQLITE_NOMEM; - } - - memset(&pMem->z[pMem->n], 0, pMem->u.nZero); - pMem->n += pMem->u.nZero; - pMem->flags &= ~(MEM_Zero|MEM_Term); + /* Set nByte to the number of bytes required to store the expanded blob. */ + nByte = pMem->n + pMem->u.nZero; + if( nByte<=0 ){ + nByte = 1; } + if( sqlite3VdbeMemGrow(pMem, nByte, 1) ){ + return SQLITE_NOMEM_BKPT; + } + + memset(&pMem->z[pMem->n], 0, pMem->u.nZero); + pMem->n += pMem->u.nZero; + pMem->flags &= ~(MEM_Zero|MEM_Term); return SQLITE_OK; } #endif - /* -** Make sure the given Mem is \u0000 terminated. +** It is already known that pMem contains an unterminated string. +** Add the zero terminator. */ -SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ - assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); - if( (pMem->flags & MEM_Term)!=0 || (pMem->flags & MEM_Str)==0 ){ - return SQLITE_OK; /* Nothing to do */ - } +static SQLITE_NOINLINE int vdbeMemAddTerminator(Mem *pMem){ if( sqlite3VdbeMemGrow(pMem, pMem->n+2, 1) ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pMem->z[pMem->n] = 0; pMem->z[pMem->n+1] = 0; @@ -60134,21 +69722,35 @@ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ return SQLITE_OK; } +/* +** Make sure the given Mem is \u0000 terminated. +*/ +SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ + assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); + testcase( (pMem->flags & (MEM_Term|MEM_Str))==(MEM_Term|MEM_Str) ); + testcase( (pMem->flags & (MEM_Term|MEM_Str))==0 ); + if( (pMem->flags & (MEM_Term|MEM_Str))!=MEM_Str ){ + return SQLITE_OK; /* Nothing to do */ + }else{ + return vdbeMemAddTerminator(pMem); + } +} + /* ** Add MEM_Str to the set of representations for the given Mem. Numbers ** are converted using sqlite3_snprintf(). Converting a BLOB to a string ** is a no-op. ** -** Existing representations MEM_Int and MEM_Real are *not* invalidated. +** Existing representations MEM_Int and MEM_Real are invalidated if +** bForce is true but are retained if bForce is false. ** ** A MEM_Null value will never be passed to this function. This function is ** used for converting values to text for returning to the user (i.e. via ** sqlite3_value_text()), or for ensuring that values to be used as btree ** keys are strings. In the former case a NULL pointer is returned the -** user and the later is an internal programming error. +** user and the latter is an internal programming error. */ -SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, int enc){ - int rc = SQLITE_OK; +SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, u8 enc, u8 bForce){ int fg = pMem->flags; const int nByte = 32; @@ -60160,11 +69762,12 @@ SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, int enc){ assert( EIGHT_BYTE_ALIGNMENT(pMem) ); - if( sqlite3VdbeMemGrow(pMem, nByte, 0) ){ - return SQLITE_NOMEM; + if( sqlite3VdbeMemClearAndResize(pMem, nByte) ){ + pMem->enc = 0; + return SQLITE_NOMEM_BKPT; } - /* For a Real or Integer, use sqlite3_mprintf() to produce the UTF-8 + /* For a Real or Integer, use sqlite3_snprintf() to produce the UTF-8 ** string representation of the value. Then, if the required encoding ** is UTF-16le or UTF-16be do a translation. ** @@ -60174,13 +69777,14 @@ SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem *pMem, int enc){ sqlite3_snprintf(nByte, pMem->z, "%lld", pMem->u.i); }else{ assert( fg & MEM_Real ); - sqlite3_snprintf(nByte, pMem->z, "%!.15g", pMem->r); + sqlite3_snprintf(nByte, pMem->z, "%!.15g", pMem->u.r); } pMem->n = sqlite3Strlen30(pMem->z); pMem->enc = SQLITE_UTF8; pMem->flags |= MEM_Str|MEM_Term; + if( bForce ) pMem->flags &= ~(MEM_Int|MEM_Real); sqlite3VdbeChangeEncoding(pMem, enc); - return rc; + return SQLITE_OK; } /* @@ -60195,58 +69799,90 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){ int rc = SQLITE_OK; if( ALWAYS(pFunc && pFunc->xFinalize) ){ sqlite3_context ctx; + Mem t; assert( (pMem->flags & MEM_Null)!=0 || pFunc==pMem->u.pDef ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); memset(&ctx, 0, sizeof(ctx)); - ctx.s.flags = MEM_Null; - ctx.s.db = pMem->db; + memset(&t, 0, sizeof(t)); + t.flags = MEM_Null; + t.db = pMem->db; + ctx.pOut = &t; ctx.pMem = pMem; ctx.pFunc = pFunc; pFunc->xFinalize(&ctx); /* IMP: R-24505-23230 */ - assert( 0==(pMem->flags&MEM_Dyn) && !pMem->xDel ); - sqlite3DbFree(pMem->db, pMem->zMalloc); - memcpy(pMem, &ctx.s, sizeof(ctx.s)); + assert( (pMem->flags & MEM_Dyn)==0 ); + if( pMem->szMalloc>0 ) sqlite3DbFree(pMem->db, pMem->zMalloc); + memcpy(pMem, &t, sizeof(t)); rc = ctx.isError; } return rc; } /* -** If the memory cell contains a string value that must be freed by -** invoking an external callback, free it now. Calling this function -** does not free any Mem.zMalloc buffer. +** If the memory cell contains a value that must be freed by +** invoking the external callback in Mem.xDel, then this routine +** will free that value. It also sets Mem.flags to MEM_Null. +** +** This is a helper routine for sqlite3VdbeMemSetNull() and +** for sqlite3VdbeMemRelease(). Use those other routines as the +** entry point for releasing Mem resources. */ -SQLITE_PRIVATE void sqlite3VdbeMemReleaseExternal(Mem *p){ +static SQLITE_NOINLINE void vdbeMemClearExternAndSetNull(Mem *p){ assert( p->db==0 || sqlite3_mutex_held(p->db->mutex) ); + assert( VdbeMemDynamic(p) ); if( p->flags&MEM_Agg ){ sqlite3VdbeMemFinalize(p, p->u.pDef); assert( (p->flags & MEM_Agg)==0 ); - sqlite3VdbeMemRelease(p); - }else if( p->flags&MEM_Dyn && p->xDel ){ + testcase( p->flags & MEM_Dyn ); + } + if( p->flags&MEM_Dyn ){ assert( (p->flags&MEM_RowSet)==0 ); - assert( p->xDel!=SQLITE_DYNAMIC ); + assert( p->xDel!=SQLITE_DYNAMIC && p->xDel!=0 ); p->xDel((void *)p->z); - p->xDel = 0; }else if( p->flags&MEM_RowSet ){ sqlite3RowSetClear(p->u.pRowSet); }else if( p->flags&MEM_Frame ){ - sqlite3VdbeMemSetNull(p); + VdbeFrame *pFrame = p->u.pFrame; + pFrame->pParent = pFrame->v->pDelFrame; + pFrame->v->pDelFrame = pFrame; } + p->flags = MEM_Null; } /* -** Release any memory held by the Mem. This may leave the Mem in an -** inconsistent state, for example with (Mem.z==0) and -** (Mem.type==SQLITE_TEXT). +** Release memory held by the Mem p, both external memory cleared +** by p->xDel and memory in p->zMalloc. +** +** This is a helper routine invoked by sqlite3VdbeMemRelease() in +** the unusual case where there really is memory in p that needs +** to be freed. */ -SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){ - VdbeMemRelease(p); - if( p->zMalloc ){ +static SQLITE_NOINLINE void vdbeMemClear(Mem *p){ + if( VdbeMemDynamic(p) ){ + vdbeMemClearExternAndSetNull(p); + } + if( p->szMalloc ){ sqlite3DbFree(p->db, p->zMalloc); - p->zMalloc = 0; + p->szMalloc = 0; } p->z = 0; - assert( p->xDel==0 ); /* Zeroed by VdbeMemRelease() above */ +} + +/* +** Release any memory resources held by the Mem. Both the memory that is +** free by Mem.xDel and the Mem.zMalloc allocation are freed. +** +** Use this routine prior to clean up prior to abandoning a Mem, or to +** reset a Mem back to its minimum memory utilization. +** +** Use sqlite3VdbeMemSetNull() to release just the Mem.xDel space +** prior to inserting new content into the Mem. +*/ +SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){ + assert( sqlite3VdbeCheckMemInvariants(p) ); + if( VdbeMemDynamic(p) || p->szMalloc ){ + vdbeMemClear(p); + } } /* @@ -60285,7 +69921,7 @@ static i64 doubleToInt64(double r){ ** If pMem is an integer, then the value is exact. If pMem is ** a floating-point then the value returned is the integer part. ** If pMem is a string or blob, then we make an attempt to convert -** it into a integer and return that. If pMem represents an +** it into an integer and return that. If pMem represents an ** an SQL-NULL value, return 0. ** ** If pMem represents a string value, its encoding might be changed. @@ -60298,11 +69934,10 @@ SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem *pMem){ if( flags & MEM_Int ){ return pMem->u.i; }else if( flags & MEM_Real ){ - return doubleToInt64(pMem->r); + return doubleToInt64(pMem->u.r); }else if( flags & (MEM_Str|MEM_Blob) ){ i64 value = 0; assert( pMem->z || pMem->n==0 ); - testcase( pMem->z==0 ); sqlite3Atoi64(pMem->z, &value, pMem->n, pMem->enc); return value; }else{ @@ -60320,7 +69955,7 @@ SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem *pMem){ assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); if( pMem->flags & MEM_Real ){ - return pMem->r; + return pMem->u.r; }else if( pMem->flags & MEM_Int ){ return (double)pMem->u.i; }else if( pMem->flags & (MEM_Str|MEM_Blob) ){ @@ -60339,12 +69974,13 @@ SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem *pMem){ ** MEM_Int if we can. */ SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem *pMem){ + i64 ix; assert( pMem->flags & MEM_Real ); assert( (pMem->flags & MEM_RowSet)==0 ); assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); - pMem->u.i = doubleToInt64(pMem->r); + ix = doubleToInt64(pMem->u.r); /* Only mark the value as an integer if ** @@ -60356,11 +69992,9 @@ SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem *pMem){ ** the second condition under the assumption that addition overflow causes ** values to wrap around. */ - if( pMem->r==(double)pMem->u.i - && pMem->u.i>SMALLEST_INT64 - && pMem->u.iflags |= MEM_Int; + if( pMem->u.r==ix && ix>SMALLEST_INT64 && ixu.i = ix; + MemSetTypeFlag(pMem, MEM_Int); } } @@ -60385,7 +70019,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem *pMem){ assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); assert( EIGHT_BYTE_ALIGNMENT(pMem) ); - pMem->r = sqlite3VdbeRealValue(pMem); + pMem->u.r = sqlite3VdbeRealValue(pMem); MemSetTypeFlag(pMem, MEM_Real); return SQLITE_OK; } @@ -60405,30 +70039,91 @@ SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem *pMem){ if( 0==sqlite3Atoi64(pMem->z, &pMem->u.i, pMem->n, pMem->enc) ){ MemSetTypeFlag(pMem, MEM_Int); }else{ - pMem->r = sqlite3VdbeRealValue(pMem); + pMem->u.r = sqlite3VdbeRealValue(pMem); MemSetTypeFlag(pMem, MEM_Real); sqlite3VdbeIntegerAffinity(pMem); } } assert( (pMem->flags & (MEM_Int|MEM_Real|MEM_Null))!=0 ); - pMem->flags &= ~(MEM_Str|MEM_Blob); + pMem->flags &= ~(MEM_Str|MEM_Blob|MEM_Zero); return SQLITE_OK; } +/* +** Cast the datatype of the value in pMem according to the affinity +** "aff". Casting is different from applying affinity in that a cast +** is forced. In other words, the value is converted into the desired +** affinity even if that results in loss of data. This routine is +** used (for example) to implement the SQL "cast()" operator. +*/ +SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){ + if( pMem->flags & MEM_Null ) return; + switch( aff ){ + case SQLITE_AFF_BLOB: { /* Really a cast to BLOB */ + if( (pMem->flags & MEM_Blob)==0 ){ + sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding); + assert( pMem->flags & MEM_Str || pMem->db->mallocFailed ); + if( pMem->flags & MEM_Str ) MemSetTypeFlag(pMem, MEM_Blob); + }else{ + pMem->flags &= ~(MEM_TypeMask&~MEM_Blob); + } + break; + } + case SQLITE_AFF_NUMERIC: { + sqlite3VdbeMemNumerify(pMem); + break; + } + case SQLITE_AFF_INTEGER: { + sqlite3VdbeMemIntegerify(pMem); + break; + } + case SQLITE_AFF_REAL: { + sqlite3VdbeMemRealify(pMem); + break; + } + default: { + assert( aff==SQLITE_AFF_TEXT ); + assert( MEM_Str==(MEM_Blob>>3) ); + pMem->flags |= (pMem->flags&MEM_Blob)>>3; + sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding); + assert( pMem->flags & MEM_Str || pMem->db->mallocFailed ); + pMem->flags &= ~(MEM_Int|MEM_Real|MEM_Blob|MEM_Zero); + break; + } + } +} + +/* +** Initialize bulk memory to be a consistent Mem object. +** +** The minimum amount of initialization feasible is performed. +*/ +SQLITE_PRIVATE void sqlite3VdbeMemInit(Mem *pMem, sqlite3 *db, u16 flags){ + assert( (flags & ~MEM_TypeMask)==0 ); + pMem->flags = flags; + pMem->db = db; + pMem->szMalloc = 0; +} + + /* ** Delete any previous value and set the value stored in *pMem to NULL. +** +** This routine calls the Mem.xDel destructor to dispose of values that +** require the destructor. But it preserves the Mem.zMalloc memory allocation. +** To free all resources, use sqlite3VdbeMemRelease(), which both calls this +** routine to invoke the destructor and deallocates Mem.zMalloc. +** +** Use this routine to reset the Mem prior to insert a new value. +** +** Use sqlite3VdbeMemRelease() to complete erase the Mem prior to abandoning it. */ SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem *pMem){ - if( pMem->flags & MEM_Frame ){ - VdbeFrame *pFrame = pMem->u.pFrame; - pFrame->pParent = pFrame->v->pDelFrame; - pFrame->v->pDelFrame = pFrame; + if( VdbeMemDynamic(pMem) ){ + vdbeMemClearExternAndSetNull(pMem); + }else{ + pMem->flags = MEM_Null; } - if( pMem->flags & MEM_RowSet ){ - sqlite3RowSetClear(pMem->u.pRowSet); - } - MemSetTypeFlag(pMem, MEM_Null); - pMem->type = SQLITE_NULL; } SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value *p){ sqlite3VdbeMemSetNull((Mem*)p); @@ -60441,19 +70136,22 @@ SQLITE_PRIVATE void sqlite3ValueSetNull(sqlite3_value *p){ SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem *pMem, int n){ sqlite3VdbeMemRelease(pMem); pMem->flags = MEM_Blob|MEM_Zero; - pMem->type = SQLITE_BLOB; pMem->n = 0; if( n<0 ) n = 0; pMem->u.nZero = n; pMem->enc = SQLITE_UTF8; + pMem->z = 0; +} -#ifdef SQLITE_OMIT_INCRBLOB - sqlite3VdbeMemGrow(pMem, n, 0); - if( pMem->z ){ - pMem->n = n; - memset(pMem->z, 0, n); - } -#endif +/* +** The pMem is known to contain content that needs to be destroyed prior +** to a value change. So invoke the destructor, then set the value to +** a 64-bit integer. +*/ +static SQLITE_NOINLINE void vdbeReleaseAndSetInt64(Mem *pMem, i64 val){ + sqlite3VdbeMemSetNull(pMem); + pMem->u.i = val; + pMem->flags = MEM_Int; } /* @@ -60461,10 +70159,12 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem *pMem, int n){ ** manifest type INTEGER. */ SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem *pMem, i64 val){ - sqlite3VdbeMemRelease(pMem); - pMem->u.i = val; - pMem->flags = MEM_Int; - pMem->type = SQLITE_INTEGER; + if( VdbeMemDynamic(pMem) ){ + vdbeReleaseAndSetInt64(pMem, val); + }else{ + pMem->u.i = val; + pMem->flags = MEM_Int; + } } #ifndef SQLITE_OMIT_FLOATING_POINT @@ -60473,13 +70173,10 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem *pMem, i64 val){ ** manifest type REAL. */ SQLITE_PRIVATE void sqlite3VdbeMemSetDouble(Mem *pMem, double val){ - if( sqlite3IsNaN(val) ){ - sqlite3VdbeMemSetNull(pMem); - }else{ - sqlite3VdbeMemRelease(pMem); - pMem->r = val; + sqlite3VdbeMemSetNull(pMem); + if( !sqlite3IsNaN(val) ){ + pMem->u.r = val; pMem->flags = MEM_Real; - pMem->type = SQLITE_FLOAT; } } #endif @@ -60493,13 +70190,14 @@ SQLITE_PRIVATE void sqlite3VdbeMemSetRowSet(Mem *pMem){ assert( db!=0 ); assert( (pMem->flags & MEM_RowSet)==0 ); sqlite3VdbeMemRelease(pMem); - pMem->zMalloc = sqlite3DbMallocRaw(db, 64); + pMem->zMalloc = sqlite3DbMallocRawNN(db, 64); if( db->mallocFailed ){ pMem->flags = MEM_Null; + pMem->szMalloc = 0; }else{ assert( pMem->zMalloc ); - pMem->u.pRowSet = sqlite3RowSetInit(db, pMem->zMalloc, - sqlite3DbMallocSize(db, pMem->zMalloc)); + pMem->szMalloc = sqlite3DbMallocSize(db, pMem->zMalloc); + pMem->u.pRowSet = sqlite3RowSetInit(db, pMem->zMalloc, pMem->szMalloc); assert( pMem->u.pRowSet!=0 ); pMem->flags = MEM_RowSet; } @@ -60523,7 +70221,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){ #ifdef SQLITE_DEBUG /* -** This routine prepares a memory cell for modication by breaking +** This routine prepares a memory cell for modification by breaking ** its link to a shallow copy and by marking any current shallow ** copies of this cell as invalid. ** @@ -60533,9 +70231,9 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){ int i; Mem *pX; - for(i=1, pX=&pVdbe->aMem[1]; i<=pVdbe->nMem; i++, pX++){ + for(i=0, pX=pVdbe->aMem; inMem; i++, pX++){ if( pX->pScopyFrom==pMem ){ - pX->flags |= MEM_Invalid; + pX->flags |= MEM_Undefined; pX->pScopyFrom = 0; } } @@ -60543,10 +70241,6 @@ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){ } #endif /* SQLITE_DEBUG */ -/* -** Size of struct Mem not including the Mem.zMalloc member. -*/ -#define MEMCELLSIZE offsetof(Mem,zMalloc) /* ** Make an shallow copy of pFrom into pTo. Prior contents of @@ -60554,11 +70248,16 @@ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){ ** pFrom->z is used, then pTo->z points to the same thing as pFrom->z ** and flags gets srcType (either MEM_Ephem or MEM_Static). */ +static SQLITE_NOINLINE void vdbeClrCopy(Mem *pTo, const Mem *pFrom, int eType){ + vdbeMemClearExternAndSetNull(pTo); + assert( !VdbeMemDynamic(pTo) ); + sqlite3VdbeMemShallowCopy(pTo, pFrom, eType); +} SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int srcType){ assert( (pFrom->flags & MEM_RowSet)==0 ); - VdbeMemRelease(pTo); + assert( pTo->db==pFrom->db ); + if( VdbeMemDynamic(pTo) ){ vdbeClrCopy(pTo,pFrom,srcType); return; } memcpy(pTo, pFrom, MEMCELLSIZE); - pTo->xDel = 0; if( (pFrom->flags&MEM_Static)==0 ){ pTo->flags &= ~(MEM_Dyn|MEM_Static|MEM_Ephem); assert( srcType==MEM_Ephem || srcType==MEM_Static ); @@ -60574,10 +70273,9 @@ SQLITE_PRIVATE int sqlite3VdbeMemCopy(Mem *pTo, const Mem *pFrom){ int rc = SQLITE_OK; assert( (pFrom->flags & MEM_RowSet)==0 ); - VdbeMemRelease(pTo); + if( VdbeMemDynamic(pTo) ) vdbeMemClearExternAndSetNull(pTo); memcpy(pTo, pFrom, MEMCELLSIZE); pTo->flags &= ~MEM_Dyn; - if( pTo->flags&(MEM_Str|MEM_Blob) ){ if( 0==(pFrom->flags&MEM_Static) ){ pTo->flags |= MEM_Ephem; @@ -60602,8 +70300,7 @@ SQLITE_PRIVATE void sqlite3VdbeMemMove(Mem *pTo, Mem *pFrom){ sqlite3VdbeMemRelease(pTo); memcpy(pTo, pFrom, sizeof(Mem)); pFrom->flags = MEM_Null; - pFrom->xDel = 0; - pFrom->zMalloc = 0; + pFrom->szMalloc = 0; } /* @@ -60650,7 +70347,8 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( if( nByte<0 ){ assert( enc!=0 ); if( enc==SQLITE_UTF8 ){ - for(nByte=0; nByte<=iLimit && z[nByte]; nByte++){} + nByte = sqlite3Strlen30(z); + if( nByte>iLimit ) nByte = iLimit+1; }else{ for(nByte=0; nByte<=iLimit && (z[nByte] | z[nByte+1]); nByte+=2){} } @@ -60669,14 +70367,17 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( if( nByte>iLimit ){ return SQLITE_TOOBIG; } - if( sqlite3VdbeMemGrow(pMem, nAlloc, 0) ){ - return SQLITE_NOMEM; + testcase( nAlloc==0 ); + testcase( nAlloc==31 ); + testcase( nAlloc==32 ); + if( sqlite3VdbeMemClearAndResize(pMem, MAX(nAlloc,32)) ){ + return SQLITE_NOMEM_BKPT; } memcpy(pMem->z, z, nAlloc); }else if( xDel==SQLITE_DYNAMIC ){ sqlite3VdbeMemRelease(pMem); pMem->zMalloc = pMem->z = (char *)z; - pMem->xDel = 0; + pMem->szMalloc = sqlite3DbMallocSize(pMem->db, pMem->zMalloc); }else{ sqlite3VdbeMemRelease(pMem); pMem->z = (char *)z; @@ -60687,11 +70388,10 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( pMem->n = nByte; pMem->flags = flags; pMem->enc = (enc==0 ? SQLITE_UTF8 : enc); - pMem->type = (enc==0 ? SQLITE_BLOB : SQLITE_TEXT); #ifndef SQLITE_OMIT_UTF16 if( pMem->enc!=SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } #endif @@ -60702,137 +70402,46 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr( return SQLITE_OK; } -/* -** Compare the values contained by the two memory cells, returning -** negative, zero or positive if pMem1 is less than, equal to, or greater -** than pMem2. Sorting order is NULL's first, followed by numbers (integers -** and reals) sorted numerically, followed by text ordered by the collating -** sequence pColl and finally blob's ordered by memcmp(). -** -** Two NULL values are considered equal by this function. -*/ -SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const CollSeq *pColl){ - int rc; - int f1, f2; - int combined_flags; - - f1 = pMem1->flags; - f2 = pMem2->flags; - combined_flags = f1|f2; - assert( (combined_flags & MEM_RowSet)==0 ); - - /* If one value is NULL, it is less than the other. If both values - ** are NULL, return 0. - */ - if( combined_flags&MEM_Null ){ - return (f2&MEM_Null) - (f1&MEM_Null); - } - - /* If one value is a number and the other is not, the number is less. - ** If both are numbers, compare as reals if one is a real, or as integers - ** if both values are integers. - */ - if( combined_flags&(MEM_Int|MEM_Real) ){ - double r1, r2; - if( (f1 & f2 & MEM_Int)!=0 ){ - if( pMem1->u.i < pMem2->u.i ) return -1; - if( pMem1->u.i > pMem2->u.i ) return 1; - return 0; - } - if( (f1&MEM_Real)!=0 ){ - r1 = pMem1->r; - }else if( (f1&MEM_Int)!=0 ){ - r1 = (double)pMem1->u.i; - }else{ - return 1; - } - if( (f2&MEM_Real)!=0 ){ - r2 = pMem2->r; - }else if( (f2&MEM_Int)!=0 ){ - r2 = (double)pMem2->u.i; - }else{ - return -1; - } - if( r1r2 ) return 1; - return 0; - } - - /* If one value is a string and the other is a blob, the string is less. - ** If both are strings, compare using the collating functions. - */ - if( combined_flags&MEM_Str ){ - if( (f1 & MEM_Str)==0 ){ - return 1; - } - if( (f2 & MEM_Str)==0 ){ - return -1; - } - - assert( pMem1->enc==pMem2->enc ); - assert( pMem1->enc==SQLITE_UTF8 || - pMem1->enc==SQLITE_UTF16LE || pMem1->enc==SQLITE_UTF16BE ); - - /* The collation sequence must be defined at this point, even if - ** the user deletes the collation sequence after the vdbe program is - ** compiled (this was not always the case). - */ - assert( !pColl || pColl->xCmp ); - - if( pColl ){ - if( pMem1->enc==pColl->enc ){ - /* The strings are already in the correct encoding. Call the - ** comparison function directly */ - return pColl->xCmp(pColl->pUser,pMem1->n,pMem1->z,pMem2->n,pMem2->z); - }else{ - const void *v1, *v2; - int n1, n2; - Mem c1; - Mem c2; - memset(&c1, 0, sizeof(c1)); - memset(&c2, 0, sizeof(c2)); - sqlite3VdbeMemShallowCopy(&c1, pMem1, MEM_Ephem); - sqlite3VdbeMemShallowCopy(&c2, pMem2, MEM_Ephem); - v1 = sqlite3ValueText((sqlite3_value*)&c1, pColl->enc); - n1 = v1==0 ? 0 : c1.n; - v2 = sqlite3ValueText((sqlite3_value*)&c2, pColl->enc); - n2 = v2==0 ? 0 : c2.n; - rc = pColl->xCmp(pColl->pUser, n1, v1, n2, v2); - sqlite3VdbeMemRelease(&c1); - sqlite3VdbeMemRelease(&c2); - return rc; - } - } - /* If a NULL pointer was passed as the collate function, fall through - ** to the blob case and use memcmp(). */ - } - - /* Both values must be blobs. Compare using memcmp(). */ - rc = memcmp(pMem1->z, pMem2->z, (pMem1->n>pMem2->n)?pMem2->n:pMem1->n); - if( rc==0 ){ - rc = pMem1->n - pMem2->n; - } - return rc; -} - /* ** Move data out of a btree key or data field and into a Mem structure. -** The data or key is taken from the entry that pCur is currently pointing +** The data is payload from the entry that pCur is currently pointing ** to. offset and amt determine what portion of the data or key to retrieve. -** key is true to get the key or false to get data. The result is written -** into the pMem element. +** The result is written into the pMem element. ** -** The pMem structure is assumed to be uninitialized. Any prior content -** is overwritten without being freed. +** The pMem object must have been initialized. This routine will use +** pMem->zMalloc to hold the content from the btree, if possible. New +** pMem->zMalloc space will be allocated if necessary. The calling routine +** is responsible for making sure that the pMem object is eventually +** destroyed. ** ** If this routine fails for any reason (malloc returns NULL or unable ** to read from the disk) then the pMem is left in an inconsistent state. */ +static SQLITE_NOINLINE int vdbeMemFromBtreeResize( + BtCursor *pCur, /* Cursor pointing at record to retrieve. */ + u32 offset, /* Offset from the start of data to return bytes from. */ + u32 amt, /* Number of bytes to return. */ + Mem *pMem /* OUT: Return data in this Mem structure. */ +){ + int rc; + pMem->flags = MEM_Null; + if( SQLITE_OK==(rc = sqlite3VdbeMemClearAndResize(pMem, amt+2)) ){ + rc = sqlite3BtreePayload(pCur, offset, amt, pMem->z); + if( rc==SQLITE_OK ){ + pMem->z[amt] = 0; + pMem->z[amt+1] = 0; + pMem->flags = MEM_Blob|MEM_Term; + pMem->n = (int)amt; + }else{ + sqlite3VdbeMemRelease(pMem); + } + } + return rc; +} SQLITE_PRIVATE int sqlite3VdbeMemFromBtree( BtCursor *pCur, /* Cursor pointing at record to retrieve. */ u32 offset, /* Offset from the start of data to return bytes from. */ u32 amt, /* Number of bytes to return. */ - int key, /* If true, retrieve from the btree key, not data. */ Mem *pMem /* OUT: Return data in this Mem structure. */ ){ char *zData; /* Data from the btree layer */ @@ -60840,41 +70449,62 @@ SQLITE_PRIVATE int sqlite3VdbeMemFromBtree( int rc = SQLITE_OK; /* Return code */ assert( sqlite3BtreeCursorIsValid(pCur) ); + assert( !VdbeMemDynamic(pMem) ); /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert() ** that both the BtShared and database handle mutexes are held. */ assert( (pMem->flags & MEM_RowSet)==0 ); - if( key ){ - zData = (char *)sqlite3BtreeKeyFetch(pCur, &available); - }else{ - zData = (char *)sqlite3BtreeDataFetch(pCur, &available); - } + zData = (char *)sqlite3BtreePayloadFetch(pCur, &available); assert( zData!=0 ); if( offset+amt<=available ){ - sqlite3VdbeMemRelease(pMem); pMem->z = &zData[offset]; pMem->flags = MEM_Blob|MEM_Ephem; - }else if( SQLITE_OK==(rc = sqlite3VdbeMemGrow(pMem, amt+2, 0)) ){ - pMem->flags = MEM_Blob|MEM_Dyn|MEM_Term; - pMem->enc = 0; - pMem->type = SQLITE_BLOB; - if( key ){ - rc = sqlite3BtreeKey(pCur, offset, amt, pMem->z); - }else{ - rc = sqlite3BtreeData(pCur, offset, amt, pMem->z); - } - pMem->z[amt] = 0; - pMem->z[amt+1] = 0; - if( rc!=SQLITE_OK ){ - sqlite3VdbeMemRelease(pMem); - } + pMem->n = (int)amt; + }else{ + rc = vdbeMemFromBtreeResize(pCur, offset, amt, pMem); } - pMem->n = (int)amt; return rc; } +/* +** The pVal argument is known to be a value other than NULL. +** Convert it into a string with encoding enc and return a pointer +** to a zero-terminated version of that string. +*/ +static SQLITE_NOINLINE const void *valueToText(sqlite3_value* pVal, u8 enc){ + assert( pVal!=0 ); + assert( pVal->db==0 || sqlite3_mutex_held(pVal->db->mutex) ); + assert( (enc&3)==(enc&~SQLITE_UTF16_ALIGNED) ); + assert( (pVal->flags & MEM_RowSet)==0 ); + assert( (pVal->flags & (MEM_Null))==0 ); + if( pVal->flags & (MEM_Blob|MEM_Str) ){ + if( ExpandBlob(pVal) ) return 0; + pVal->flags |= MEM_Str; + if( pVal->enc != (enc & ~SQLITE_UTF16_ALIGNED) ){ + sqlite3VdbeChangeEncoding(pVal, enc & ~SQLITE_UTF16_ALIGNED); + } + if( (enc & SQLITE_UTF16_ALIGNED)!=0 && 1==(1&SQLITE_PTR_TO_INT(pVal->z)) ){ + assert( (pVal->flags & (MEM_Ephem|MEM_Static))!=0 ); + if( sqlite3VdbeMemMakeWriteable(pVal)!=SQLITE_OK ){ + return 0; + } + } + sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-31275-44060 */ + }else{ + sqlite3VdbeMemStringify(pVal, enc, 0); + assert( 0==(1&SQLITE_PTR_TO_INT(pVal->z)) ); + } + assert(pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) || pVal->db==0 + || pVal->db->mallocFailed ); + if( pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) ){ + return pVal->z; + }else{ + return 0; + } +} + /* This function is only available internally, it is not part of the ** external API. It works in a similar way to sqlite3_value_text(), ** except the data returned is in the encoding specified by the second @@ -60887,38 +70517,16 @@ SQLITE_PRIVATE int sqlite3VdbeMemFromBtree( */ SQLITE_PRIVATE const void *sqlite3ValueText(sqlite3_value* pVal, u8 enc){ if( !pVal ) return 0; - assert( pVal->db==0 || sqlite3_mutex_held(pVal->db->mutex) ); assert( (enc&3)==(enc&~SQLITE_UTF16_ALIGNED) ); assert( (pVal->flags & MEM_RowSet)==0 ); - + if( (pVal->flags&(MEM_Str|MEM_Term))==(MEM_Str|MEM_Term) && pVal->enc==enc ){ + return pVal->z; + } if( pVal->flags&MEM_Null ){ return 0; } - assert( (MEM_Blob>>3) == MEM_Str ); - pVal->flags |= (pVal->flags & MEM_Blob)>>3; - ExpandBlob(pVal); - if( pVal->flags&MEM_Str ){ - sqlite3VdbeChangeEncoding(pVal, enc & ~SQLITE_UTF16_ALIGNED); - if( (enc & SQLITE_UTF16_ALIGNED)!=0 && 1==(1&SQLITE_PTR_TO_INT(pVal->z)) ){ - assert( (pVal->flags & (MEM_Ephem|MEM_Static))!=0 ); - if( sqlite3VdbeMemMakeWriteable(pVal)!=SQLITE_OK ){ - return 0; - } - } - sqlite3VdbeMemNulTerminate(pVal); /* IMP: R-31275-44060 */ - }else{ - assert( (pVal->flags&MEM_Blob)==0 ); - sqlite3VdbeMemStringify(pVal, enc); - assert( 0==(1&SQLITE_PTR_TO_INT(pVal->z)) ); - } - assert(pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) || pVal->db==0 - || pVal->db->mallocFailed ); - if( pVal->enc==(enc & ~SQLITE_UTF16_ALIGNED) ){ - return pVal->z; - }else{ - return 0; - } + return valueToText(pVal, enc); } /* @@ -60928,7 +70536,6 @@ SQLITE_PRIVATE sqlite3_value *sqlite3ValueNew(sqlite3 *db){ Mem *p = sqlite3DbMallocZero(db, sizeof(*p)); if( p ){ p->flags = MEM_Null; - p->type = SQLITE_NULL; p->db = db; } return p; @@ -60953,7 +70560,7 @@ struct ValueNewStat4Ctx { ** Otherwise, if the second argument is non-zero, then this function is ** being called indirectly by sqlite3Stat4ProbeSetValue(). If it has not ** already been allocated, allocate the UnpackedRecord structure that -** that function will return to its caller here. Then return a pointer +** that function will return to its caller here. Then return a pointer to ** an sqlite3_value within the UnpackedRecord.a[] array. */ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ @@ -60974,11 +70581,9 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ if( pRec->pKeyInfo ){ assert( pRec->pKeyInfo->nField+pRec->pKeyInfo->nXField==nCol ); assert( pRec->pKeyInfo->enc==ENC(db) ); - pRec->flags = UNPACKED_PREFIX_MATCH; pRec->aMem = (Mem *)((u8*)pRec + ROUND8(sizeof(UnpackedRecord))); for(i=0; iaMem[i].flags = MEM_Null; - pRec->aMem[i].type = SQLITE_NULL; pRec->aMem[i].db = db; } }else{ @@ -60999,6 +70604,111 @@ static sqlite3_value *valueNew(sqlite3 *db, struct ValueNewStat4Ctx *p){ return sqlite3ValueNew(db); } +/* +** The expression object indicated by the second argument is guaranteed +** to be a scalar SQL function. If +** +** * all function arguments are SQL literals, +** * one of the SQLITE_FUNC_CONSTANT or _SLOCHNG function flags is set, and +** * the SQLITE_FUNC_NEEDCOLL function flag is not set, +** +** then this routine attempts to invoke the SQL function. Assuming no +** error occurs, output parameter (*ppVal) is set to point to a value +** object containing the result before returning SQLITE_OK. +** +** Affinity aff is applied to the result of the function before returning. +** If the result is a text value, the sqlite3_value object uses encoding +** enc. +** +** If the conditions above are not met, this function returns SQLITE_OK +** and sets (*ppVal) to NULL. Or, if an error occurs, (*ppVal) is set to +** NULL and an SQLite error code returned. +*/ +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +static int valueFromFunction( + sqlite3 *db, /* The database connection */ + Expr *p, /* The expression to evaluate */ + u8 enc, /* Encoding to use */ + u8 aff, /* Affinity to use */ + sqlite3_value **ppVal, /* Write the new value here */ + struct ValueNewStat4Ctx *pCtx /* Second argument for valueNew() */ +){ + sqlite3_context ctx; /* Context object for function invocation */ + sqlite3_value **apVal = 0; /* Function arguments */ + int nVal = 0; /* Size of apVal[] array */ + FuncDef *pFunc = 0; /* Function definition */ + sqlite3_value *pVal = 0; /* New value */ + int rc = SQLITE_OK; /* Return code */ + ExprList *pList = 0; /* Function arguments */ + int i; /* Iterator variable */ + + assert( pCtx!=0 ); + assert( (p->flags & EP_TokenOnly)==0 ); + pList = p->x.pList; + if( pList ) nVal = pList->nExpr; + pFunc = sqlite3FindFunction(db, p->u.zToken, nVal, enc, 0); + assert( pFunc ); + if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0 + || (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL) + ){ + return SQLITE_OK; + } + + if( pList ){ + apVal = (sqlite3_value**)sqlite3DbMallocZero(db, sizeof(apVal[0]) * nVal); + if( apVal==0 ){ + rc = SQLITE_NOMEM_BKPT; + goto value_from_function_out; + } + for(i=0; ia[i].pExpr, enc, aff, &apVal[i]); + if( apVal[i]==0 || rc!=SQLITE_OK ) goto value_from_function_out; + } + } + + pVal = valueNew(db, pCtx); + if( pVal==0 ){ + rc = SQLITE_NOMEM_BKPT; + goto value_from_function_out; + } + + assert( pCtx->pParse->rc==SQLITE_OK ); + memset(&ctx, 0, sizeof(ctx)); + ctx.pOut = pVal; + ctx.pFunc = pFunc; + pFunc->xSFunc(&ctx, nVal, apVal); + if( ctx.isError ){ + rc = ctx.isError; + sqlite3ErrorMsg(pCtx->pParse, "%s", sqlite3_value_text(pVal)); + }else{ + sqlite3ValueApplyAffinity(pVal, aff, SQLITE_UTF8); + assert( rc==SQLITE_OK ); + rc = sqlite3VdbeChangeEncoding(pVal, enc); + if( rc==SQLITE_OK && sqlite3VdbeMemTooBig(pVal) ){ + rc = SQLITE_TOOBIG; + pCtx->pParse->nErr++; + } + } + pCtx->pParse->rc = rc; + + value_from_function_out: + if( rc!=SQLITE_OK ){ + pVal = 0; + } + if( apVal ){ + for(i=0; iop; + assert( pExpr!=0 ); + while( (op = pExpr->op)==TK_UPLUS || op==TK_SPAN ) pExpr = pExpr->pLeft; if( NEVER(op==TK_REGISTER) ) op = pExpr->op2; + /* Compressed expressions only appear when parsing the DEFAULT clause + ** on a table column definition, and hence only when pCtx==0. This + ** check ensures that an EP_TokenOnly expression is never passed down + ** into valueFromFunction(). */ + assert( (pExpr->flags & EP_TokenOnly)==0 || pCtx==0 ); + + if( op==TK_CAST ){ + u8 aff = sqlite3AffinityType(pExpr->u.zToken,0); + rc = valueFromExpr(db, pExpr->pLeft, enc, aff, ppVal, pCtx); + testcase( rc!=SQLITE_OK ); + if( *ppVal ){ + sqlite3VdbeMemCast(*ppVal, aff, SQLITE_UTF8); + sqlite3ValueApplyAffinity(*ppVal, affinity, SQLITE_UTF8); + } + return rc; + } + /* Handle negative integers in a single step. This is needed in the ** case when the value is -9223372036854775808. */ @@ -61051,9 +70775,8 @@ static int valueFromExpr( zVal = sqlite3MPrintf(db, "%s%s", zNeg, pExpr->u.zToken); if( zVal==0 ) goto no_mem; sqlite3ValueSetStr(pVal, -1, zVal, SQLITE_UTF8, SQLITE_DYNAMIC); - if( op==TK_FLOAT ) pVal->type = SQLITE_FLOAT; } - if( (op==TK_INTEGER || op==TK_FLOAT ) && affinity==SQLITE_AFF_NONE ){ + if( (op==TK_INTEGER || op==TK_FLOAT ) && affinity==SQLITE_AFF_BLOB ){ sqlite3ValueApplyAffinity(pVal, SQLITE_AFF_NUMERIC, SQLITE_UTF8); }else{ sqlite3ValueApplyAffinity(pVal, affinity, SQLITE_UTF8); @@ -61068,19 +70791,20 @@ static int valueFromExpr( && pVal!=0 ){ sqlite3VdbeMemNumerify(pVal); - if( pVal->u.i==SMALLEST_INT64 ){ - pVal->flags &= MEM_Int; - pVal->flags |= MEM_Real; - pVal->r = (double)LARGEST_INT64; + if( pVal->flags & MEM_Real ){ + pVal->u.r = -pVal->u.r; + }else if( pVal->u.i==SMALLEST_INT64 ){ + pVal->u.r = -(double)SMALLEST_INT64; + MemSetTypeFlag(pVal, MEM_Real); }else{ pVal->u.i = -pVal->u.i; } - pVal->r = -pVal->r; sqlite3ValueApplyAffinity(pVal, affinity, enc); } }else if( op==TK_NULL ){ pVal = valueNew(db, pCtx); if( pVal==0 ) goto no_mem; + sqlite3VdbeMemNumerify(pVal); } #ifndef SQLITE_OMIT_BLOB_LITERAL else if( op==TK_BLOB ){ @@ -61097,14 +70821,17 @@ static int valueFromExpr( } #endif - if( pVal ){ - sqlite3VdbeMemStoreType(pVal); +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + else if( op==TK_FUNCTION && pCtx!=0 ){ + rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx); } +#endif + *ppVal = pVal; return rc; no_mem: - db->mallocFailed = 1; + sqlite3OomFault(db); sqlite3DbFree(db, zVal); assert( *ppVal==0 ); #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 @@ -61112,7 +70839,7 @@ no_mem: #else assert( pCtx==0 ); sqlite3ValueFree(pVal); #endif - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } /* @@ -61132,7 +70859,7 @@ SQLITE_PRIVATE int sqlite3ValueFromExpr( u8 affinity, /* Affinity to use */ sqlite3_value **ppVal /* Write the new value here */ ){ - return valueFromExpr(db, pExpr, enc, affinity, ppVal, 0); + return pExpr ? valueFromExpr(db, pExpr, enc, affinity, ppVal, 0) : 0; } #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 @@ -61150,26 +70877,25 @@ static void recordFunc( sqlite3_value **argv ){ const int file_format = 1; - int iSerial; /* Serial type */ + u32 iSerial; /* Serial type */ int nSerial; /* Bytes of space for iSerial as varint */ - int nVal; /* Bytes of space required for argv[0] */ + u32 nVal; /* Bytes of space required for argv[0] */ int nRet; sqlite3 *db; u8 *aRet; UNUSED_PARAMETER( argc ); - iSerial = sqlite3VdbeSerialType(argv[0], file_format); + iSerial = sqlite3VdbeSerialType(argv[0], file_format, &nVal); nSerial = sqlite3VarintLen(iSerial); - nVal = sqlite3VdbeSerialTypeLen(iSerial); db = sqlite3_context_db_handle(context); nRet = 1 + nSerial + nVal; - aRet = sqlite3DbMallocRaw(db, nRet); + aRet = sqlite3DbMallocRawNN(db, nRet); if( aRet==0 ){ sqlite3_result_error_nomem(context); }else{ aRet[0] = nSerial+1; - sqlite3PutVarint(&aRet[1], iSerial); + putVarint32(&aRet[1], iSerial); sqlite3VdbeSerialPut(&aRet[1+nSerial], argv[0], iSerial); sqlite3_result_blob(context, aRet, nRet, SQLITE_TRANSIENT); sqlite3DbFree(db, aRet); @@ -61180,15 +70906,72 @@ static void recordFunc( ** Register built-in functions used to help read ANALYZE data. */ SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void){ - static SQLITE_WSD FuncDef aAnalyzeTableFuncs[] = { + static FuncDef aAnalyzeTableFuncs[] = { FUNCTION(sqlite_record, 1, 0, 0, recordFunc), }; - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aAnalyzeTableFuncs); - for(i=0; idb; + + /* Skip over any TK_COLLATE nodes */ + pExpr = sqlite3ExprSkipCollate(pExpr); + + if( !pExpr ){ + pVal = valueNew(db, pAlloc); + if( pVal ){ + sqlite3VdbeMemSetNull((Mem*)pVal); + } + }else if( pExpr->op==TK_VARIABLE + || NEVER(pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE) + ){ + Vdbe *v; + int iBindVar = pExpr->iColumn; + sqlite3VdbeSetVarmask(pParse->pVdbe, iBindVar); + if( (v = pParse->pReprepare)!=0 ){ + pVal = valueNew(db, pAlloc); + if( pVal ){ + rc = sqlite3VdbeMemCopy((Mem*)pVal, &v->aVar[iBindVar-1]); + if( rc==SQLITE_OK ){ + sqlite3ValueApplyAffinity(pVal, affinity, ENC(db)); + } + pVal->db = pParse->db; + } + } + }else{ + rc = valueFromExpr(db, pExpr, ENC(db), affinity, &pVal, pAlloc); } + + assert( pVal==0 || pVal->db==db ); + *ppVal = pVal; + return rc; } /* @@ -61196,9 +70979,9 @@ SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void){ ** structures intended to be compared against sample index keys stored ** in the sqlite_stat4 table. ** -** A single call to this function attempts to populates field iVal (leftmost -** is 0 etc.) of the unpacked record with a value extracted from expression -** pExpr. Extraction of values is possible if: +** A single call to this function populates zero or more fields of the +** record starting with field iVal (fields are numbered from left to +** right starting with 0). A single field is populated if: ** ** * (pExpr==0). In this case the value is assumed to be an SQL NULL, ** @@ -61207,10 +70990,14 @@ SQLITE_PRIVATE void sqlite3AnalyzeFunctions(void){ ** * The sqlite3ValueFromExpr() function is able to extract a value ** from the expression (i.e. the expression is a literal value). ** -** If a value can be extracted, the affinity passed as the 5th argument -** is applied to it before it is copied into the UnpackedRecord. Output -** parameter *pbOk is set to true if a value is extracted, or false -** otherwise. +** Or, if pExpr is a TK_VECTOR, one field is populated for each of the +** vector components that match either of the two latter criteria listed +** above. +** +** Before any value is appended to the record, the affinity of the +** corresponding column within index pIdx is applied to it. Before +** this function returns, output parameter *pnExtract is set to the +** number of values appended to the record. ** ** When this function is called, *ppRec must either point to an object ** allocated by an earlier call to this function, or must be NULL. If it @@ -61226,55 +71013,103 @@ SQLITE_PRIVATE int sqlite3Stat4ProbeSetValue( Index *pIdx, /* Index being probed */ UnpackedRecord **ppRec, /* IN/OUT: Probe record */ Expr *pExpr, /* The expression to extract a value from */ - u8 affinity, /* Affinity to use */ + int nElem, /* Maximum number of values to append */ int iVal, /* Array element to populate */ - int *pbOk /* OUT: True if value was extracted */ + int *pnExtract /* OUT: Values appended to the record */ ){ int rc = SQLITE_OK; - sqlite3_value *pVal = 0; - sqlite3 *db = pParse->db; + int nExtract = 0; + if( pExpr==0 || pExpr->op!=TK_SELECT ){ + int i; + struct ValueNewStat4Ctx alloc; - struct ValueNewStat4Ctx alloc; - alloc.pParse = pParse; - alloc.pIdx = pIdx; - alloc.ppRec = ppRec; - alloc.iVal = iVal; + alloc.pParse = pParse; + alloc.pIdx = pIdx; + alloc.ppRec = ppRec; - /* Skip over any TK_COLLATE nodes */ - pExpr = sqlite3ExprSkipCollate(pExpr); - - if( !pExpr ){ - pVal = valueNew(db, &alloc); - if( pVal ){ - sqlite3VdbeMemSetNull((Mem*)pVal); + for(i=0; idb, pIdx, iVal+i); + alloc.iVal = iVal+i; + rc = stat4ValueFromExpr(pParse, pElem, aff, &alloc, &pVal); + if( !pVal ) break; + nExtract++; } - }else if( pExpr->op==TK_VARIABLE - || NEVER(pExpr->op==TK_REGISTER && pExpr->op2==TK_VARIABLE) - ){ - Vdbe *v; - int iBindVar = pExpr->iColumn; - sqlite3VdbeSetVarmask(pParse->pVdbe, iBindVar); - if( (v = pParse->pReprepare)!=0 ){ - pVal = valueNew(db, &alloc); - if( pVal ){ - rc = sqlite3VdbeMemCopy((Mem*)pVal, &v->aVar[iBindVar-1]); - if( rc==SQLITE_OK ){ - sqlite3ValueApplyAffinity(pVal, affinity, ENC(db)); - } - pVal->db = pParse->db; - sqlite3VdbeMemStoreType((Mem*)pVal); - } - } - }else{ - rc = valueFromExpr(db, pExpr, ENC(db), affinity, &pVal, &alloc); } - *pbOk = (pVal!=0); - assert( pVal==0 || pVal->db==db ); + *pnExtract = nExtract; return rc; } +/* +** Attempt to extract a value from expression pExpr using the methods +** as described for sqlite3Stat4ProbeSetValue() above. +** +** If successful, set *ppVal to point to a new value object and return +** SQLITE_OK. If no value can be extracted, but no other error occurs +** (e.g. OOM), return SQLITE_OK and set *ppVal to NULL. Or, if an error +** does occur, return an SQLite error code. The final value of *ppVal +** is undefined in this case. +*/ +SQLITE_PRIVATE int sqlite3Stat4ValueFromExpr( + Parse *pParse, /* Parse context */ + Expr *pExpr, /* The expression to extract a value from */ + u8 affinity, /* Affinity to use */ + sqlite3_value **ppVal /* OUT: New value object (or NULL) */ +){ + return stat4ValueFromExpr(pParse, pExpr, affinity, 0, ppVal); +} + +/* +** Extract the iCol-th column from the nRec-byte record in pRec. Write +** the column value into *ppVal. If *ppVal is initially NULL then a new +** sqlite3_value object is allocated. +** +** If *ppVal is initially NULL then the caller is responsible for +** ensuring that the value written into *ppVal is eventually freed. +*/ +SQLITE_PRIVATE int sqlite3Stat4Column( + sqlite3 *db, /* Database handle */ + const void *pRec, /* Pointer to buffer containing record */ + int nRec, /* Size of buffer pRec in bytes */ + int iCol, /* Column to extract */ + sqlite3_value **ppVal /* OUT: Extracted value */ +){ + u32 t; /* a column type code */ + int nHdr; /* Size of the header in the record */ + int iHdr; /* Next unread header byte */ + int iField; /* Next unread data byte */ + int szField; /* Size of the current data field */ + int i; /* Column index */ + u8 *a = (u8*)pRec; /* Typecast byte array */ + Mem *pMem = *ppVal; /* Write result into this Mem object */ + + assert( iCol>0 ); + iHdr = getVarint32(a, nHdr); + if( nHdr>nRec || iHdr>=nHdr ) return SQLITE_CORRUPT_BKPT; + iField = nHdr; + for(i=0; i<=iCol; i++){ + iHdr += getVarint32(&a[iHdr], t); + testcase( iHdr==nHdr ); + testcase( iHdr==nHdr+1 ); + if( iHdr>nHdr ) return SQLITE_CORRUPT_BKPT; + szField = sqlite3VdbeSerialTypeLen(t); + iField += szField; + } + testcase( iField==nRec ); + testcase( iField==nRec+1 ); + if( iField>nRec ) return SQLITE_CORRUPT_BKPT; + if( pMem==0 ){ + pMem = *ppVal = sqlite3ValueNew(db); + if( pMem==0 ) return SQLITE_NOMEM_BKPT; + } + sqlite3VdbeSerialGet(&a[iField-szField], t, pMem); + pMem->enc = ENC(db); + return SQLITE_OK; +} + /* ** Unless it is NULL, the argument must be an UnpackedRecord object returned ** by an earlier call to sqlite3Stat4ProbeSetValue(). This call deletes @@ -61287,7 +71122,7 @@ SQLITE_PRIVATE void sqlite3Stat4ProbeFree(UnpackedRecord *pRec){ Mem *aMem = pRec->aMem; sqlite3 *db = aMem[0].db; for(i=0; ipKeyInfo); sqlite3DbFree(db, pRec); @@ -61318,19 +71153,28 @@ SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value *v){ } /* -** Return the number of bytes in the sqlite3_value object assuming -** that it uses the encoding "enc" +** The sqlite3ValueBytes() routine returns the number of bytes in the +** sqlite3_value object assuming that it uses the encoding "enc". +** The valueBytes() routine is a helper function. */ +static SQLITE_NOINLINE int valueBytes(sqlite3_value *pVal, u8 enc){ + return valueToText(pVal, enc)!=0 ? pVal->n : 0; +} SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ Mem *p = (Mem*)pVal; - if( (p->flags & MEM_Blob)!=0 || sqlite3ValueText(pVal, enc) ){ + assert( (p->flags & MEM_Null)==0 || (p->flags & (MEM_Str|MEM_Blob))==0 ); + if( (p->flags & MEM_Str)!=0 && pVal->enc==enc ){ + return p->n; + } + if( (p->flags & MEM_Blob)!=0 ){ if( p->flags & MEM_Zero ){ return p->n + p->u.nZero; }else{ return p->n; } } - return 0; + if( p->flags & MEM_Null ) return 0; + return valueBytes(pVal, enc); } /************** End of vdbemem.c *********************************************/ @@ -61347,10 +71191,10 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ ** ************************************************************************* ** This file contains code used for creating, destroying, and populating -** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.) Prior -** to version 2.8.7, all this code was combined into the vdbe.c source file. -** But that file was getting too big so this subroutines were split out. +** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.) */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ /* ** Create a new virtual database engine. @@ -61358,8 +71202,9 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse *pParse){ sqlite3 *db = pParse->db; Vdbe *p; - p = sqlite3DbMallocZero(db, sizeof(Vdbe) ); + p = sqlite3DbMallocRawNN(db, sizeof(Vdbe) ); if( p==0 ) return 0; + memset(&p->aOp, 0, sizeof(Vdbe)-offsetof(Vdbe,aOp)); p->db = db; if( db->pVdbe ){ db->pVdbe->pPrev = p; @@ -61372,9 +71217,21 @@ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse *pParse){ assert( pParse->aLabel==0 ); assert( pParse->nLabel==0 ); assert( pParse->nOpAlloc==0 ); + assert( pParse->szOpAlloc==0 ); return p; } +/* +** Change the error string stored in Vdbe.zErrMsg +*/ +SQLITE_PRIVATE void sqlite3VdbeError(Vdbe *p, const char *zFormat, ...){ + va_list ap; + sqlite3DbFree(p->db, p->zErrMsg); + va_start(ap, zFormat); + p->zErrMsg = sqlite3VMPrintf(p->db, zFormat, ap); + va_end(ap); +} + /* ** Remember the SQL string for a prepared statement. */ @@ -61389,20 +71246,13 @@ SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe *p, const char *z, int n, int isPrepa p->isPrepareV2 = (u8)isPrepareV2; } -/* -** Return the SQL associated with a prepared statement -*/ -SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt){ - Vdbe *p = (Vdbe *)pStmt; - return (p && p->isPrepareV2) ? p->zSql : 0; -} - /* ** Swap all content between two VDBE structures. */ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){ Vdbe tmp, *pTmp; char *zTmp; + assert( pA->db==pB->db ); tmp = *pA; *pA = *pB; *pB = tmp; @@ -61419,24 +71269,42 @@ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){ } /* -** Resize the Vdbe.aOp array so that it is at least one op larger than -** it was. +** Resize the Vdbe.aOp array so that it is at least nOp elements larger +** than its current size. nOp is guaranteed to be less than or equal +** to 1024/sizeof(Op). ** ** If an out-of-memory error occurs while resizing the array, return -** SQLITE_NOMEM. In this case Vdbe.aOp and Vdbe.nOpAlloc remain +** SQLITE_NOMEM. In this case Vdbe.aOp and Parse.nOpAlloc remain ** unchanged (this is so that any opcodes already allocated can be ** correctly deallocated along with the rest of the Vdbe). */ -static int growOpArray(Vdbe *v){ +static int growOpArray(Vdbe *v, int nOp){ VdbeOp *pNew; Parse *p = v->pParse; + + /* The SQLITE_TEST_REALLOC_STRESS compile-time option is designed to force + ** more frequent reallocs and hence provide more opportunities for + ** simulated OOM faults. SQLITE_TEST_REALLOC_STRESS is generally used + ** during testing only. With SQLITE_TEST_REALLOC_STRESS grow the op array + ** by the minimum* amount required until the size reaches 512. Normal + ** operation (without SQLITE_TEST_REALLOC_STRESS) is to double the current + ** size of the op array or add 1KB of space, whichever is smaller. */ +#ifdef SQLITE_TEST_REALLOC_STRESS + int nNew = (p->nOpAlloc>=512 ? p->nOpAlloc*2 : p->nOpAlloc+nOp); +#else int nNew = (p->nOpAlloc ? p->nOpAlloc*2 : (int)(1024/sizeof(Op))); + UNUSED_PARAMETER(nOp); +#endif + + assert( nOp<=(1024/sizeof(Op)) ); + assert( nNew>=(p->nOpAlloc+nOp) ); pNew = sqlite3DbRealloc(p->db, v->aOp, nNew*sizeof(Op)); if( pNew ){ - p->nOpAlloc = sqlite3DbMallocSize(p->db, pNew)/sizeof(Op); + p->szOpAlloc = sqlite3DbMallocSize(p->db, pNew); + p->nOpAlloc = p->szOpAlloc/sizeof(Op); v->aOp = pNew; } - return (pNew ? SQLITE_OK : SQLITE_NOMEM); + return (pNew ? SQLITE_OK : SQLITE_NOMEM_BKPT); } #ifdef SQLITE_DEBUG @@ -61466,17 +71334,21 @@ static void test_addop_breakpoint(void){ ** the sqlite3VdbeChangeP4() function to change the value of the P4 ** operand. */ +static SQLITE_NOINLINE int growOp3(Vdbe *p, int op, int p1, int p2, int p3){ + assert( p->pParse->nOpAlloc<=p->nOp ); + if( growOpArray(p, 1) ) return 1; + assert( p->pParse->nOpAlloc>p->nOp ); + return sqlite3VdbeAddOp3(p, op, p1, p2, p3); +} SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){ int i; VdbeOp *pOp; i = p->nOp; assert( p->magic==VDBE_MAGIC_INIT ); - assert( op>0 && op<0xff ); + assert( op>=0 && op<0xff ); if( p->pParse->nOpAlloc<=i ){ - if( growOpArray(p) ){ - return 1; - } + return growOp3(p, op, p1, p2, p3); } p->nOp++; pOp = &p->aOp[i]; @@ -61494,9 +71366,8 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){ if( p->db->flags & SQLITE_VdbeAddopTrace ){ int jj, kk; Parse *pParse = p->pParse; - for(jj=kk=0; jjnColCache; jj++){ struct yColCache *x = pParse->aColCache + jj; - if( x->iLevel>pParse->iCacheLevel || x->iReg==0 ) continue; printf(" r[%d]={%d:%d}", x->iReg, x->iTable, x->iColumn); kk++; } @@ -61508,6 +71379,9 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){ #ifdef VDBE_PROFILE pOp->cycles = 0; pOp->cnt = 0; +#endif +#ifdef SQLITE_VDBE_COVERAGE + pOp->iSrcLine = 0; #endif return i; } @@ -61521,6 +71395,43 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe *p, int op, int p1, int p2){ return sqlite3VdbeAddOp3(p, op, p1, p2, 0); } +/* Generate code for an unconditional jump to instruction iDest +*/ +SQLITE_PRIVATE int sqlite3VdbeGoto(Vdbe *p, int iDest){ + return sqlite3VdbeAddOp3(p, OP_Goto, 0, iDest, 0); +} + +/* Generate code to cause the string zStr to be loaded into +** register iDest +*/ +SQLITE_PRIVATE int sqlite3VdbeLoadString(Vdbe *p, int iDest, const char *zStr){ + return sqlite3VdbeAddOp4(p, OP_String8, 0, iDest, 0, zStr, 0); +} + +/* +** Generate code that initializes multiple registers to string or integer +** constants. The registers begin with iDest and increase consecutively. +** One register is initialized for each characgter in zTypes[]. For each +** "s" character in zTypes[], the register is a string if the argument is +** not NULL, or OP_Null if the value is a null pointer. For each "i" character +** in zTypes[], the register is initialized to an integer. +*/ +SQLITE_PRIVATE void sqlite3VdbeMultiLoad(Vdbe *p, int iDest, const char *zTypes, ...){ + va_list ap; + int i; + char c; + va_start(ap, zTypes); + for(i=0; (c = zTypes[i])!=0; i++){ + if( c=='s' ){ + const char *z = va_arg(ap, const char*); + sqlite3VdbeAddOp4(p, z==0 ? OP_Null : OP_String8, 0, iDest++, 0, z, 0); + }else{ + assert( c=='i' ); + sqlite3VdbeAddOp2(p, OP_Integer, va_arg(ap, int), iDest++); + } + } + va_end(ap); +} /* ** Add an opcode that includes the p4 value as a pointer. @@ -61539,6 +71450,24 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp4( return addr; } +/* +** Add an opcode that includes the p4 value with a P4_INT64 or +** P4_REAL type. +*/ +SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8( + Vdbe *p, /* Add the opcode to this VM */ + int op, /* The new opcode */ + int p1, /* The P1 operand */ + int p2, /* The P2 operand */ + int p3, /* The P3 operand */ + const u8 *zP4, /* The P4 operand */ + int p4type /* P4 operand type */ +){ + char *p4copy = sqlite3DbMallocRawNN(sqlite3VdbeDb(p), 8); + if( p4copy ) memcpy(p4copy, zP4, 8); + return sqlite3VdbeAddOp4(p, op, p1, p2, p3, p4copy, p4type); +} + /* ** Add an OP_ParseSchema opcode. This routine is broken out from ** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees @@ -61549,8 +71478,7 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp4( */ SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe *p, int iDb, char *zWhere){ int j; - int addr = sqlite3VdbeAddOp3(p, OP_ParseSchema, iDb, 0, 0); - sqlite3VdbeChangeP4(p, addr, zWhere, P4_DYNAMIC); + sqlite3VdbeAddOp4(p, OP_ParseSchema, iDb, 0, 0, zWhere, P4_DYNAMIC); for(j=0; jdb->nDb; j++) sqlite3VdbeUsesBtree(p, j); } @@ -61566,10 +71494,29 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp4Int( int p4 /* The P4 operand as an integer */ ){ int addr = sqlite3VdbeAddOp3(p, op, p1, p2, p3); - sqlite3VdbeChangeP4(p, addr, SQLITE_INT_TO_PTR(p4), P4_INT32); + if( p->db->mallocFailed==0 ){ + VdbeOp *pOp = &p->aOp[addr]; + pOp->p4type = P4_INT32; + pOp->p4.i = p4; + } return addr; } +/* Insert the end of a co-routine +*/ +SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe *v, int regYield){ + sqlite3VdbeAddOp1(v, OP_EndCoroutine, regYield); + + /* Clear the temporary register cache, thereby ensuring that each + ** co-routine has its own independent set of registers, because co-routines + ** might expect their registers to be preserved across an OP_Yield, and + ** that could cause problems if two or more co-routines are using the same + ** temporary register. + */ + v->pParse->nTempReg = 0; + v->pParse->nRangeReg = 0; +} + /* ** Create a new symbolic label for an instruction that has yet to be ** coded. The symbolic label is really just a negative number. The @@ -61595,7 +71542,7 @@ SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe *v){ if( p->aLabel ){ p->aLabel[i] = -1; } - return -1-i; + return ADDR(i); } /* @@ -61605,13 +71552,13 @@ SQLITE_PRIVATE int sqlite3VdbeMakeLabel(Vdbe *v){ */ SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe *v, int x){ Parse *p = v->pParse; - int j = -1-x; + int j = ADDR(x); assert( v->magic==VDBE_MAGIC_INIT ); assert( jnLabel ); - if( j>=0 && p->aLabel ){ + assert( j>=0 ); + if( p->aLabel ){ p->aLabel[j] = v->nOp; } - p->iFixedOp = v->nOp - 1; } /* @@ -61621,6 +71568,13 @@ SQLITE_PRIVATE void sqlite3VdbeRunOnlyOnce(Vdbe *p){ p->runOnlyOnce = 1; } +/* +** Mark the VDBE as one that can only be run multiple times. +*/ +SQLITE_PRIVATE void sqlite3VdbeReusable(Vdbe *p){ + p->runOnlyOnce = 0; +} + #ifdef SQLITE_DEBUG /* sqlite3AssertMayAbort() logic */ /* @@ -61703,6 +71657,7 @@ static Op *opIterNext(VdbeOpIter *p){ ** * OP_VUpdate ** * OP_VRename ** * OP_FkCounter with P2==0 (immediate foreign key constraint) +** * OP_CreateTable and OP_InitCoroutine (for CREATE TABLE AS SELECT ...) ** ** Then check that the value of Parse.mayAbort is true if an ** ABORT may be thrown, or false otherwise. Return true if it does @@ -61713,6 +71668,9 @@ static Op *opIterNext(VdbeOpIter *p){ */ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){ int hasAbort = 0; + int hasFkCounter = 0; + int hasCreateTable = 0; + int hasInitCoroutine = 0; Op *pOp; VdbeOpIter sIter; memset(&sIter, 0, sizeof(sIter)); @@ -61721,15 +71679,19 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){ while( (pOp = opIterNext(&sIter))!=0 ){ int opcode = pOp->opcode; if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename -#ifndef SQLITE_OMIT_FOREIGN_KEY - || (opcode==OP_FkCounter && pOp->p1==0 && pOp->p2==1) -#endif || ((opcode==OP_Halt || opcode==OP_HaltIfNull) && ((pOp->p1&0xff)==SQLITE_CONSTRAINT && pOp->p2==OE_Abort)) ){ hasAbort = 1; break; } + if( opcode==OP_CreateTable ) hasCreateTable = 1; + if( opcode==OP_InitCoroutine ) hasInitCoroutine = 1; +#ifndef SQLITE_OMIT_FOREIGN_KEY + if( opcode==OP_FkCounter && pOp->p1==0 && pOp->p2==1 ){ + hasFkCounter = 1; + } +#endif } sqlite3DbFree(v->db, sIter.apSub); @@ -61738,100 +71700,111 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){ ** through all opcodes and hasAbort may be set incorrectly. Return ** true for this case to prevent the assert() in the callers frame ** from failing. */ - return ( v->db->mallocFailed || hasAbort==mayAbort ); + return ( v->db->mallocFailed || hasAbort==mayAbort || hasFkCounter + || (hasCreateTable && hasInitCoroutine) ); } #endif /* SQLITE_DEBUG - the sqlite3AssertMayAbort() function */ /* -** Loop through the program looking for P2 values that are negative -** on jump instructions. Each such value is a label. Resolve the -** label by setting the P2 value to its correct non-zero value. +** This routine is called after all opcodes have been inserted. It loops +** through all the opcodes and fixes up some details. ** -** This routine is called once after all opcodes have been inserted. +** (1) For each jump instruction with a negative P2 value (a label) +** resolve the P2 value to an actual address. ** -** Variable *pMaxFuncArgs is set to the maximum value of any P2 argument -** to an OP_Function, OP_AggStep or OP_VFilter opcode. This is used by -** sqlite3VdbeMakeReady() to size the Vdbe.apArg[] array. +** (2) Compute the maximum number of arguments used by any SQL function +** and store that value in *pMaxFuncArgs. ** -** The Op.opflags field is set on all opcodes. +** (3) Update the Vdbe.readOnly and Vdbe.bIsReader flags to accurately +** indicate what the prepared statement actually does. +** +** (4) Initialize the p4.xAdvance pointer on opcodes that use it. +** +** (5) Reclaim the memory allocated for storing labels. +** +** This routine will only function correctly if the mkopcodeh.tcl generator +** script numbers the opcodes correctly. Changes to this routine must be +** coordinated with changes to mkopcodeh.tcl. */ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ - int i; int nMaxArgs = *pMaxFuncArgs; Op *pOp; Parse *pParse = p->pParse; int *aLabel = pParse->aLabel; p->readOnly = 1; p->bIsReader = 0; - for(pOp=p->aOp, i=p->nOp-1; i>=0; i--, pOp++){ - u8 opcode = pOp->opcode; + pOp = &p->aOp[p->nOp-1]; + while(1){ - /* NOTE: Be sure to update mkopcodeh.awk when adding or removing - ** cases from this switch! */ - switch( opcode ){ - case OP_Function: - case OP_AggStep: { - if( pOp->p5>nMaxArgs ) nMaxArgs = pOp->p5; - break; - } - case OP_Transaction: { - if( pOp->p2!=0 ) p->readOnly = 0; - /* fall thru */ - } - case OP_AutoCommit: - case OP_Savepoint: { - p->bIsReader = 1; - break; - } + /* Only JUMP opcodes and the short list of special opcodes in the switch + ** below need to be considered. The mkopcodeh.tcl generator script groups + ** all these opcodes together near the front of the opcode list. Skip + ** any opcode that does not need processing by virtual of the fact that + ** it is larger than SQLITE_MX_JUMP_OPCODE, as a performance optimization. + */ + if( pOp->opcode<=SQLITE_MX_JUMP_OPCODE ){ + /* NOTE: Be sure to update mkopcodeh.tcl when adding or removing + ** cases from this switch! */ + switch( pOp->opcode ){ + case OP_Transaction: { + if( pOp->p2!=0 ) p->readOnly = 0; + /* fall thru */ + } + case OP_AutoCommit: + case OP_Savepoint: { + p->bIsReader = 1; + break; + } #ifndef SQLITE_OMIT_WAL - case OP_Checkpoint: + case OP_Checkpoint: #endif - case OP_Vacuum: - case OP_JournalMode: { - p->readOnly = 0; - p->bIsReader = 1; - break; - } + case OP_Vacuum: + case OP_JournalMode: { + p->readOnly = 0; + p->bIsReader = 1; + break; + } #ifndef SQLITE_OMIT_VIRTUALTABLE - case OP_VUpdate: { - if( pOp->p2>nMaxArgs ) nMaxArgs = pOp->p2; - break; - } - case OP_VFilter: { - int n; - assert( p->nOp - i >= 3 ); - assert( pOp[-1].opcode==OP_Integer ); - n = pOp[-1].p1; - if( n>nMaxArgs ) nMaxArgs = n; - break; - } + case OP_VUpdate: { + if( pOp->p2>nMaxArgs ) nMaxArgs = pOp->p2; + break; + } + case OP_VFilter: { + int n; + assert( (pOp - p->aOp) >= 3 ); + assert( pOp[-1].opcode==OP_Integer ); + n = pOp[-1].p1; + if( n>nMaxArgs ) nMaxArgs = n; + break; + } #endif - case OP_Next: - case OP_NextIfOpen: - case OP_SorterNext: { - pOp->p4.xAdvance = sqlite3BtreeNext; - pOp->p4type = P4_ADVANCE; - break; + case OP_Next: + case OP_NextIfOpen: + case OP_SorterNext: { + pOp->p4.xAdvance = sqlite3BtreeNext; + pOp->p4type = P4_ADVANCE; + break; + } + case OP_Prev: + case OP_PrevIfOpen: { + pOp->p4.xAdvance = sqlite3BtreePrevious; + pOp->p4type = P4_ADVANCE; + break; + } } - case OP_Prev: - case OP_PrevIfOpen: { - pOp->p4.xAdvance = sqlite3BtreePrevious; - pOp->p4type = P4_ADVANCE; - break; + if( (sqlite3OpcodeProperty[pOp->opcode] & OPFLG_JUMP)!=0 && pOp->p2<0 ){ + assert( ADDR(pOp->p2)nLabel ); + pOp->p2 = aLabel[ADDR(pOp->p2)]; } } - - pOp->opflags = sqlite3OpcodeProperty[opcode]; - if( (pOp->opflags & OPFLG_JUMP)!=0 && pOp->p2<0 ){ - assert( -1-pOp->p2nLabel ); - pOp->p2 = aLabel[-1-pOp->p2]; - } + if( pOp==p->aOp ) break; + pOp--; } sqlite3DbFree(p->db, pParse->aLabel); pParse->aLabel = 0; pParse->nLabel = 0; *pMaxFuncArgs = nMaxArgs; - assert( p->bIsReader!=0 || p->btreeMask==0 ); + assert( p->bIsReader!=0 || DbMaskAllZero(p->btreeMask) ); } /* @@ -61842,6 +71815,36 @@ SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe *p){ return p->nOp; } +/* +** Verify that at least N opcode slots are available in p without +** having to malloc for more space (except when compiled using +** SQLITE_TEST_REALLOC_STRESS). This interface is used during testing +** to verify that certain calls to sqlite3VdbeAddOpList() can never +** fail due to a OOM fault and hence that the return value from +** sqlite3VdbeAddOpList() will always be non-NULL. +*/ +#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS) +SQLITE_PRIVATE void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N){ + assert( p->nOp + N <= p->pParse->nOpAlloc ); +} +#endif + +/* +** Verify that the VM passed as the only argument does not contain +** an OP_ResultRow opcode. Fail an assert() if it does. This is used +** by code in pragma.c to ensure that the implementation of certain +** pragmas comports with the flags specified in the mkpragmatab.tcl +** script. +*/ +#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS) +SQLITE_PRIVATE void sqlite3VdbeVerifyNoResultRow(Vdbe *p){ + int i; + for(i=0; inOp; i++){ + assert( p->aOp[i].opcode!=OP_ResultRow ); + } +} +#endif + /* ** This function returns a pointer to the array of opcodes associated with ** the Vdbe passed as the first argument. It is the callers responsibility @@ -61858,7 +71861,7 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe *p, int *pnOp, int *pnMaxArg) assert( aOp && !p->db->mallocFailed ); /* Check that sqlite3VdbeUsesBtree() was not called on this VM */ - assert( p->btreeMask==0 ); + assert( DbMaskAllZero(p->btreeMask) ); resolveP2Values(p, pnMaxArg); *pnOp = p->nOp; @@ -61867,92 +71870,103 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeTakeOpArray(Vdbe *p, int *pnOp, int *pnMaxArg) } /* -** Add a whole list of operations to the operation stack. Return the -** address of the first operation added. +** Add a whole list of operations to the operation stack. Return a +** pointer to the first operation inserted. +** +** Non-zero P2 arguments to jump instructions are automatically adjusted +** so that the jump target is relative to the first operation inserted. */ -SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe *p, int nOp, VdbeOpList const *aOp){ - int addr; +SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList( + Vdbe *p, /* Add opcodes to the prepared statement */ + int nOp, /* Number of opcodes to add */ + VdbeOpList const *aOp, /* The opcodes to be added */ + int iLineno /* Source-file line number of first opcode */ +){ + int i; + VdbeOp *pOut, *pFirst; + assert( nOp>0 ); assert( p->magic==VDBE_MAGIC_INIT ); - if( p->nOp + nOp > p->pParse->nOpAlloc && growOpArray(p) ){ + if( p->nOp + nOp > p->pParse->nOpAlloc && growOpArray(p, nOp) ){ return 0; } - addr = p->nOp; - if( ALWAYS(nOp>0) ){ - int i; - VdbeOpList const *pIn = aOp; - for(i=0; ip2; - VdbeOp *pOut = &p->aOp[i+addr]; - pOut->opcode = pIn->opcode; - pOut->p1 = pIn->p1; - if( p2<0 ){ - assert( sqlite3OpcodeProperty[pOut->opcode] & OPFLG_JUMP ); - pOut->p2 = addr + ADDR(p2); - }else{ - pOut->p2 = p2; - } - pOut->p3 = pIn->p3; - pOut->p4type = P4_NOTUSED; - pOut->p4.p = 0; - pOut->p5 = 0; + pFirst = pOut = &p->aOp[p->nOp]; + for(i=0; iopcode = aOp->opcode; + pOut->p1 = aOp->p1; + pOut->p2 = aOp->p2; + assert( aOp->p2>=0 ); + if( (sqlite3OpcodeProperty[aOp->opcode] & OPFLG_JUMP)!=0 && aOp->p2>0 ){ + pOut->p2 += p->nOp; + } + pOut->p3 = aOp->p3; + pOut->p4type = P4_NOTUSED; + pOut->p4.p = 0; + pOut->p5 = 0; #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - pOut->zComment = 0; + pOut->zComment = 0; +#endif +#ifdef SQLITE_VDBE_COVERAGE + pOut->iSrcLine = iLineno+i; +#else + (void)iLineno; #endif #ifdef SQLITE_DEBUG - if( p->db->flags & SQLITE_VdbeAddopTrace ){ - sqlite3VdbePrintOp(0, i+addr, &p->aOp[i+addr]); - } -#endif + if( p->db->flags & SQLITE_VdbeAddopTrace ){ + sqlite3VdbePrintOp(0, i+p->nOp, &p->aOp[i+p->nOp]); } - p->nOp += nOp; +#endif } - return addr; + p->nOp += nOp; + return pFirst; } +#if defined(SQLITE_ENABLE_STMT_SCANSTATUS) /* -** Change the value of the P1 operand for a specific instruction. -** This routine is useful when a large program is loaded from a -** static array using sqlite3VdbeAddOpList but we want to make a -** few minor changes to the program. +** Add an entry to the array of counters managed by sqlite3_stmt_scanstatus(). */ +SQLITE_PRIVATE void sqlite3VdbeScanStatus( + Vdbe *p, /* VM to add scanstatus() to */ + int addrExplain, /* Address of OP_Explain (or 0) */ + int addrLoop, /* Address of loop counter */ + int addrVisit, /* Address of rows visited counter */ + LogEst nEst, /* Estimated number of output rows */ + const char *zName /* Name of table or index being scanned */ +){ + int nByte = (p->nScan+1) * sizeof(ScanStatus); + ScanStatus *aNew; + aNew = (ScanStatus*)sqlite3DbRealloc(p->db, p->aScan, nByte); + if( aNew ){ + ScanStatus *pNew = &aNew[p->nScan++]; + pNew->addrExplain = addrExplain; + pNew->addrLoop = addrLoop; + pNew->addrVisit = addrVisit; + pNew->nEst = nEst; + pNew->zName = sqlite3DbStrDup(p->db, zName); + p->aScan = aNew; + } +} +#endif + + +/* +** Change the value of the opcode, or P1, P2, P3, or P5 operands +** for a specific instruction. +*/ +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe *p, u32 addr, u8 iNewOpcode){ + sqlite3VdbeGetOp(p,addr)->opcode = iNewOpcode; +} SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p1 = val; - } + sqlite3VdbeGetOp(p,addr)->p1 = val; } - -/* -** Change the value of the P2 operand for a specific instruction. -** This routine is useful for setting a jump destination. -*/ SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p2 = val; - } + sqlite3VdbeGetOp(p,addr)->p2 = val; } - -/* -** Change the value of the P3 operand for a specific instruction. -*/ SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p3 = val; - } + sqlite3VdbeGetOp(p,addr)->p3 = val; } - -/* -** Change the value of the P5 operand for the most recently -** added operation. -*/ -SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u8 val){ - assert( p!=0 ); - if( p->aOp ){ - assert( p->nOp>0 ); - p->aOp[p->nOp-1].p5 = val; - } +SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u16 p5){ + assert( p->nOp>0 || p->db->mallocFailed ); + if( p->nOp>0 ) p->aOp[p->nOp-1].p5 = p5; } /* @@ -61961,7 +71975,6 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u8 val){ */ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){ sqlite3VdbeChangeP2(p, addr, p->nOp); - p->pParse->iFixedOp = p->nOp - 1; } @@ -61970,7 +71983,7 @@ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){ ** the FuncDef is not ephermal, then do nothing. */ static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef){ - if( ALWAYS(pDef) && (pDef->funcFlags & SQLITE_FUNC_EPHEM)!=0 ){ + if( (pDef->funcFlags & SQLITE_FUNC_EPHEM)!=0 ){ sqlite3DbFree(db, pDef); } } @@ -61980,43 +71993,53 @@ static void vdbeFreeOpArray(sqlite3 *, Op *, int); /* ** Delete a P4 value if necessary. */ +static SQLITE_NOINLINE void freeP4Mem(sqlite3 *db, Mem *p){ + if( p->szMalloc ) sqlite3DbFree(db, p->zMalloc); + sqlite3DbFree(db, p); +} +static SQLITE_NOINLINE void freeP4FuncCtx(sqlite3 *db, sqlite3_context *p){ + freeEphemeralFunction(db, p->pFunc); + sqlite3DbFree(db, p); +} static void freeP4(sqlite3 *db, int p4type, void *p4){ - if( p4 ){ - assert( db ); - switch( p4type ){ - case P4_REAL: - case P4_INT64: - case P4_DYNAMIC: - case P4_INTARRAY: { - sqlite3DbFree(db, p4); - break; - } - case P4_KEYINFO: { - if( db->pnBytesFreed==0 ) sqlite3KeyInfoUnref((KeyInfo*)p4); - break; - } - case P4_MPRINTF: { - if( db->pnBytesFreed==0 ) sqlite3_free(p4); - break; - } - case P4_FUNCDEF: { - freeEphemeralFunction(db, (FuncDef*)p4); - break; - } - case P4_MEM: { - if( db->pnBytesFreed==0 ){ - sqlite3ValueFree((sqlite3_value*)p4); - }else{ - Mem *p = (Mem*)p4; - sqlite3DbFree(db, p->zMalloc); - sqlite3DbFree(db, p); - } - break; - } - case P4_VTAB : { - if( db->pnBytesFreed==0 ) sqlite3VtabUnlock((VTable *)p4); - break; + assert( db ); + switch( p4type ){ + case P4_FUNCCTX: { + freeP4FuncCtx(db, (sqlite3_context*)p4); + break; + } + case P4_REAL: + case P4_INT64: + case P4_DYNAMIC: + case P4_INTARRAY: { + sqlite3DbFree(db, p4); + break; + } + case P4_KEYINFO: { + if( db->pnBytesFreed==0 ) sqlite3KeyInfoUnref((KeyInfo*)p4); + break; + } +#ifdef SQLITE_ENABLE_CURSOR_HINTS + case P4_EXPR: { + sqlite3ExprDelete(db, (Expr*)p4); + break; + } +#endif + case P4_FUNCDEF: { + freeEphemeralFunction(db, (FuncDef*)p4); + break; + } + case P4_MEM: { + if( db->pnBytesFreed==0 ){ + sqlite3ValueFree((sqlite3_value*)p4); + }else{ + freeP4Mem(db, (Mem*)p4); } + break; + } + case P4_VTAB : { + if( db->pnBytesFreed==0 ) sqlite3VtabUnlock((VTable *)p4); + break; } } } @@ -62030,7 +72053,7 @@ static void vdbeFreeOpArray(sqlite3 *db, Op *aOp, int nOp){ if( aOp ){ Op *pOp; for(pOp=aOp; pOp<&aOp[nOp]; pOp++){ - freeP4(db, pOp->p4type, pOp->p4.p); + if( pOp->p4type ) freeP4(db, pOp->p4type, pOp->p4.p); #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS sqlite3DbFree(db, pOp->zComment); #endif @@ -62052,24 +72075,25 @@ SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *pVdbe, SubProgram *p){ /* ** Change the opcode at addr into OP_Noop */ -SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr){ - if( p->aOp ){ - VdbeOp *pOp = &p->aOp[addr]; - sqlite3 *db = p->db; - freeP4(db, pOp->p4type, pOp->p4.p); - memset(pOp, 0, sizeof(pOp[0])); - pOp->opcode = OP_Noop; - if( addr==p->nOp-1 ) p->nOp--; - } +SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe *p, int addr){ + VdbeOp *pOp; + if( p->db->mallocFailed ) return 0; + assert( addr>=0 && addrnOp ); + pOp = &p->aOp[addr]; + freeP4(p->db, pOp->p4type, pOp->p4.p); + pOp->p4type = P4_NOTUSED; + pOp->p4.z = 0; + pOp->opcode = OP_Noop; + return 1; } /* -** Remove the last opcode inserted +** If the last opcode is "op" and it is not a jump destination, +** then remove it. Return true if and only if an opcode was removed. */ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){ - if( (p->nOp-1)>(p->pParse->iFixedOp) && p->aOp[p->nOp-1].opcode==op ){ - sqlite3VdbeChangeToNoop(p, p->nOp-1); - return 1; + if( p->nOp>0 && p->aOp[p->nOp-1].opcode==op ){ + return sqlite3VdbeChangeToNoop(p, p->nOp-1); }else{ return 0; } @@ -62092,16 +72116,34 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){ ** ** If addr<0 then change P4 on the most recently inserted instruction. */ +static void SQLITE_NOINLINE vdbeChangeP4Full( + Vdbe *p, + Op *pOp, + const char *zP4, + int n +){ + if( pOp->p4type ){ + freeP4(p->db, pOp->p4type, pOp->p4.p); + pOp->p4type = 0; + pOp->p4.p = 0; + } + if( n<0 ){ + sqlite3VdbeChangeP4(p, (int)(pOp - p->aOp), zP4, n); + }else{ + if( n==0 ) n = sqlite3Strlen30(zP4); + pOp->p4.z = sqlite3DbStrNDup(p->db, zP4, n); + pOp->p4type = P4_DYNAMIC; + } +} SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int n){ Op *pOp; sqlite3 *db; assert( p!=0 ); db = p->db; assert( p->magic==VDBE_MAGIC_INIT ); - if( p->aOp==0 || db->mallocFailed ){ - if( n!=P4_VTAB ){ - freeP4(db, n, (void*)*(char**)&zP4); - } + assert( p->aOp!=0 || db->mallocFailed ); + if( db->mallocFailed ){ + if( n!=P4_VTAB ) freeP4(db, n, (void*)*(char**)&zP4); return; } assert( p->nOp>0 ); @@ -62110,32 +72152,45 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int addr = p->nOp - 1; } pOp = &p->aOp[addr]; - assert( pOp->p4type==P4_NOTUSED || pOp->p4type==P4_INT32 ); - freeP4(db, pOp->p4type, pOp->p4.p); - pOp->p4.p = 0; + if( n>=0 || pOp->p4type ){ + vdbeChangeP4Full(p, pOp, zP4, n); + return; + } if( n==P4_INT32 ){ /* Note: this cast is safe, because the origin data point was an int ** that was cast to a (const char *). */ pOp->p4.i = SQLITE_PTR_TO_INT(zP4); pOp->p4type = P4_INT32; - }else if( zP4==0 ){ - pOp->p4.p = 0; - pOp->p4type = P4_NOTUSED; - }else if( n==P4_KEYINFO ){ - pOp->p4.p = (void*)zP4; - pOp->p4type = P4_KEYINFO; - }else if( n==P4_VTAB ){ - pOp->p4.p = (void*)zP4; - pOp->p4type = P4_VTAB; - sqlite3VtabLock((VTable *)zP4); - assert( ((VTable *)zP4)->db==p->db ); - }else if( n<0 ){ + }else if( zP4!=0 ){ + assert( n<0 ); pOp->p4.p = (void*)zP4; pOp->p4type = (signed char)n; + if( n==P4_VTAB ) sqlite3VtabLock((VTable*)zP4); + } +} + +/* +** Change the P4 operand of the most recently coded instruction +** to the value defined by the arguments. This is a high-speed +** version of sqlite3VdbeChangeP4(). +** +** The P4 operand must not have been previously defined. And the new +** P4 must not be P4_INT32. Use sqlite3VdbeChangeP4() in either of +** those cases. +*/ +SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe *p, void *pP4, int n){ + VdbeOp *pOp; + assert( n!=P4_INT32 && n!=P4_VTAB ); + assert( n<=0 ); + if( p->db->mallocFailed ){ + freeP4(p->db, n, pP4); }else{ - if( n==0 ) n = sqlite3Strlen30(zP4); - pOp->p4.z = sqlite3DbStrNDup(p->db, zP4, n); - pOp->p4type = P4_DYNAMIC; + assert( pP4!=0 ); + assert( p->nOp>0 ); + pOp = &p->aOp[p->nOp-1]; + assert( pOp->p4type==P4_NOTUSED ); + pOp->p4type = n; + pOp->p4.p = pP4; } } @@ -62145,10 +72200,11 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int */ SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse *pParse, Index *pIdx){ Vdbe *v = pParse->pVdbe; + KeyInfo *pKeyInfo; assert( v!=0 ); assert( pIdx!=0 ); - sqlite3VdbeChangeP4(v, -1, (char*)sqlite3KeyInfoOfIndex(pParse, pIdx), - P4_KEYINFO); + pKeyInfo = sqlite3KeyInfoOfIndex(pParse, pIdx); + if( pKeyInfo ) sqlite3VdbeAppendP4(v, pKeyInfo, P4_KEYINFO); } #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS @@ -62186,6 +72242,15 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){ } #endif /* NDEBUG */ +#ifdef SQLITE_VDBE_COVERAGE +/* +** Set the value if the iSrcLine field for the previously coded instruction. +*/ +SQLITE_PRIVATE void sqlite3VdbeSetLineNumber(Vdbe *v, int iLine){ + sqlite3VdbeGetOp(v,-1)->iSrcLine = iLine; +} +#endif /* SQLITE_VDBE_COVERAGE */ + /* ** Return the opcode for a given address. If the address is -1, then ** return the most recently inserted opcode. @@ -62194,18 +72259,10 @@ SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){ ** routine, then a pointer to a dummy VdbeOp will be returned. That opcode ** is readable but not writable, though it is cast to a writable value. ** The return of a dummy opcode allows the call to continue functioning -** after a OOM fault without having to check to see if the return from +** after an OOM fault without having to check to see if the return from ** this routine is a valid pointer. But because the dummy.opcode is 0, ** dummy will never be written to. This is verified by code inspection and ** by running with Valgrind. -** -** About the #ifdef SQLITE_OMIT_TRACE: Normally, this routine is never called -** unless p->nOp>0. This is because in the absense of SQLITE_OMIT_TRACE, -** an OP_Trace instruction is always inserted by sqlite3VdbeGet() as soon as -** a new VDBE is created. So we are free to set addr to p->nOp-1 without -** having to double-check to make sure that the result is non-negative. But -** if SQLITE_OMIT_TRACE is defined, the OP_Trace is omitted and we do need to -** check the value of p->nOp-1 before continuing. */ SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){ /* C89 specifies that the constant "dummy" will be initialized to all @@ -62213,9 +72270,6 @@ SQLITE_PRIVATE VdbeOp *sqlite3VdbeGetOp(Vdbe *p, int addr){ static VdbeOp dummy; /* Ignore the MSVC warning about no initializer */ assert( p->magic==VDBE_MAGIC_INIT ); if( addr<0 ){ -#ifdef SQLITE_OMIT_TRACE - if( p->nOp==0 ) return (VdbeOp*)&dummy; -#endif addr = p->nOp - 1; } assert( (addr>=0 && addrnOp) || p->db->mallocFailed ); @@ -62262,12 +72316,21 @@ static int displayComment( const char *zSynopsis; int nOpName; int ii, jj; + char zAlt[50]; zOpName = sqlite3OpcodeName(pOp->opcode); nOpName = sqlite3Strlen30(zOpName); if( zOpName[nOpName+1] ){ int seenCom = 0; char c; zSynopsis = zOpName += nOpName + 1; + if( strncmp(zSynopsis,"IF ",3)==0 ){ + if( pOp->p5 & SQLITE_STOREP2 ){ + sqlite3_snprintf(sizeof(zAlt), zAlt, "r[P2] = (%s)", zSynopsis+3); + }else{ + sqlite3_snprintf(sizeof(zAlt), zAlt, "if %s goto P2", zSynopsis+3); + } + zSynopsis = zAlt; + } for(ii=jj=0; jjop ){ + case TK_STRING: + sqlite3XPrintf(p, "%Q", pExpr->u.zToken); + break; + case TK_INTEGER: + sqlite3XPrintf(p, "%d", pExpr->u.iValue); + break; + case TK_NULL: + sqlite3XPrintf(p, "NULL"); + break; + case TK_REGISTER: { + sqlite3XPrintf(p, "r[%d]", pExpr->iTable); + break; + } + case TK_COLUMN: { + if( pExpr->iColumn<0 ){ + sqlite3XPrintf(p, "rowid"); + }else{ + sqlite3XPrintf(p, "c%d", (int)pExpr->iColumn); + } + break; + } + case TK_LT: zOp = "LT"; break; + case TK_LE: zOp = "LE"; break; + case TK_GT: zOp = "GT"; break; + case TK_GE: zOp = "GE"; break; + case TK_NE: zOp = "NE"; break; + case TK_EQ: zOp = "EQ"; break; + case TK_IS: zOp = "IS"; break; + case TK_ISNOT: zOp = "ISNOT"; break; + case TK_AND: zOp = "AND"; break; + case TK_OR: zOp = "OR"; break; + case TK_PLUS: zOp = "ADD"; break; + case TK_STAR: zOp = "MUL"; break; + case TK_MINUS: zOp = "SUB"; break; + case TK_REM: zOp = "REM"; break; + case TK_BITAND: zOp = "BITAND"; break; + case TK_BITOR: zOp = "BITOR"; break; + case TK_SLASH: zOp = "DIV"; break; + case TK_LSHIFT: zOp = "LSHIFT"; break; + case TK_RSHIFT: zOp = "RSHIFT"; break; + case TK_CONCAT: zOp = "CONCAT"; break; + case TK_UMINUS: zOp = "MINUS"; break; + case TK_UPLUS: zOp = "PLUS"; break; + case TK_BITNOT: zOp = "BITNOT"; break; + case TK_NOT: zOp = "NOT"; break; + case TK_ISNULL: zOp = "ISNULL"; break; + case TK_NOTNULL: zOp = "NOTNULL"; break; -#if !defined(SQLITE_OMIT_EXPLAIN) || !defined(NDEBUG) \ - || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) + default: + sqlite3XPrintf(p, "%s", "expr"); + break; + } + + if( zOp ){ + sqlite3XPrintf(p, "%s(", zOp); + displayP4Expr(p, pExpr->pLeft); + if( pExpr->pRight ){ + sqlite3StrAccumAppend(p, ",", 1); + displayP4Expr(p, pExpr->pRight); + } + sqlite3StrAccumAppend(p, ")", 1); + } +} +#endif /* VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS) */ + + +#if VDBE_DISPLAY_P4 /* ** Compute a string that describes the P4 parameter for an opcode. ** Use zTemp for any required temporary buffer space. */ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ char *zP4 = zTemp; + StrAccum x; assert( nTemp>=20 ); + sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0); switch( pOp->p4type ){ case P4_KEYINFO: { - int i, j; + int j; KeyInfo *pKeyInfo = pOp->p4.pKeyInfo; assert( pKeyInfo->aSortOrder!=0 ); - sqlite3_snprintf(nTemp, zTemp, "k(%d", pKeyInfo->nField); - i = sqlite3Strlen30(zTemp); + sqlite3XPrintf(&x, "k(%d", pKeyInfo->nField); for(j=0; jnField; j++){ CollSeq *pColl = pKeyInfo->aColl[j]; - const char *zColl = pColl ? pColl->zName : "nil"; - int n = sqlite3Strlen30(zColl); - if( n==6 && memcmp(zColl,"BINARY",6)==0 ){ - zColl = "B"; - n = 1; - } - if( i+n>nTemp-6 ){ - memcpy(&zTemp[i],",...",4); - break; - } - zTemp[i++] = ','; - if( pKeyInfo->aSortOrder[j] ){ - zTemp[i++] = '-'; - } - memcpy(&zTemp[i], zColl, n+1); - i += n; + const char *zColl = pColl ? pColl->zName : ""; + if( strcmp(zColl, "BINARY")==0 ) zColl = "B"; + sqlite3XPrintf(&x, ",%s%s", pKeyInfo->aSortOrder[j] ? "-" : "", zColl); } - zTemp[i++] = ')'; - zTemp[i] = 0; - assert( ip4.pExpr); + break; + } +#endif case P4_COLLSEQ: { CollSeq *pColl = pOp->p4.pColl; - sqlite3_snprintf(nTemp, zTemp, "(%.20s)", pColl->zName); + sqlite3XPrintf(&x, "(%.20s)", pColl->zName); break; } case P4_FUNCDEF: { FuncDef *pDef = pOp->p4.pFunc; - sqlite3_snprintf(nTemp, zTemp, "%s(%d)", pDef->zName, pDef->nArg); + sqlite3XPrintf(&x, "%s(%d)", pDef->zName, pDef->nArg); break; } +#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) + case P4_FUNCCTX: { + FuncDef *pDef = pOp->p4.pCtx->pFunc; + sqlite3XPrintf(&x, "%s(%d)", pDef->zName, pDef->nArg); + break; + } +#endif case P4_INT64: { - sqlite3_snprintf(nTemp, zTemp, "%lld", *pOp->p4.pI64); + sqlite3XPrintf(&x, "%lld", *pOp->p4.pI64); break; } case P4_INT32: { - sqlite3_snprintf(nTemp, zTemp, "%d", pOp->p4.i); + sqlite3XPrintf(&x, "%d", pOp->p4.i); break; } case P4_REAL: { - sqlite3_snprintf(nTemp, zTemp, "%.16g", *pOp->p4.pReal); + sqlite3XPrintf(&x, "%.16g", *pOp->p4.pReal); break; } case P4_MEM: { @@ -62384,11 +72518,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ if( pMem->flags & MEM_Str ){ zP4 = pMem->z; }else if( pMem->flags & MEM_Int ){ - sqlite3_snprintf(nTemp, zTemp, "%lld", pMem->u.i); + sqlite3XPrintf(&x, "%lld", pMem->u.i); }else if( pMem->flags & MEM_Real ){ - sqlite3_snprintf(nTemp, zTemp, "%.16g", pMem->r); + sqlite3XPrintf(&x, "%.16g", pMem->u.r); }else if( pMem->flags & MEM_Null ){ - sqlite3_snprintf(nTemp, zTemp, "NULL"); + zP4 = "NULL"; }else{ assert( pMem->flags & MEM_Blob ); zP4 = "(blob)"; @@ -62398,22 +72532,34 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ #ifndef SQLITE_OMIT_VIRTUALTABLE case P4_VTAB: { sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab; - sqlite3_snprintf(nTemp, zTemp, "vtab:%p:%p", pVtab, pVtab->pModule); + sqlite3XPrintf(&x, "vtab:%p", pVtab); break; } #endif case P4_INTARRAY: { - sqlite3_snprintf(nTemp, zTemp, "intarray"); + int i; + int *ai = pOp->p4.ai; + int n = ai[0]; /* The first element of an INTARRAY is always the + ** count of the number of elements to follow */ + for(i=1; ip4.pTab->zName); + break; + } default: { zP4 = pOp->p4.z; if( zP4==0 ){ @@ -62422,10 +72568,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ } } } + sqlite3StrAccumFinish(&x); assert( zP4!=0 ); return zP4; } -#endif +#endif /* VDBE_DISPLAY_P4 */ /* ** Declare to the Vdbe that the BTree object at db->aDb[i] is used. @@ -62438,13 +72585,13 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){ SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){ assert( i>=0 && idb->nDb && i<(int)sizeof(yDbMask)*8 ); assert( i<(int)sizeof(p->btreeMask)*8 ); - p->btreeMask |= ((yDbMask)1)<btreeMask, i); if( i!=1 && sqlite3BtreeSharable(p->db->aDb[i].pBt) ){ - p->lockMask |= ((yDbMask)1)<lockMask, i); } } -#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 +#if !defined(SQLITE_OMIT_SHARED_CACHE) /* ** If SQLite is compiled to support shared-cache mode and to be threadsafe, ** this routine obtains the mutex associated with each BtShared structure @@ -62468,16 +72615,15 @@ SQLITE_PRIVATE void sqlite3VdbeUsesBtree(Vdbe *p, int i){ */ SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe *p){ int i; - yDbMask mask; sqlite3 *db; Db *aDb; int nDb; - if( p->lockMask==0 ) return; /* The common case */ + if( DbMaskAllZero(p->lockMask) ) return; /* The common case */ db = p->db; aDb = db->aDb; nDb = db->nDb; - for(i=0, mask=1; ilockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){ + for(i=0; ilockMask,i) && ALWAYS(aDb[i].pBt!=0) ){ sqlite3BtreeEnter(aDb[i].pBt); } } @@ -62488,22 +72634,24 @@ SQLITE_PRIVATE void sqlite3VdbeEnter(Vdbe *p){ /* ** Unlock all of the btrees previously locked by a call to sqlite3VdbeEnter(). */ -SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){ +static SQLITE_NOINLINE void vdbeLeave(Vdbe *p){ int i; - yDbMask mask; sqlite3 *db; Db *aDb; int nDb; - if( p->lockMask==0 ) return; /* The common case */ db = p->db; aDb = db->aDb; nDb = db->nDb; - for(i=0, mask=1; ilockMask)!=0 && ALWAYS(aDb[i].pBt!=0) ){ + for(i=0; ilockMask,i) && ALWAYS(aDb[i].pBt!=0) ){ sqlite3BtreeLeave(aDb[i].pBt); } } } +SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){ + if( DbMaskAllZero(p->lockMask) ) return; /* The common case */ + vdbeLeave(p); +} #endif #if defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) @@ -62520,7 +72668,7 @@ SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, Op *pOp){ #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS displayComment(pOp, zP4, zCom, sizeof(zCom)); #else - zCom[0] = 0 + zCom[0] = 0; #endif /* NB: The sqlite3OpcodeName() function is implemented by code created ** by the mkopcodeh.awk and mkopcodec.awk scripts which extract the @@ -62533,22 +72681,37 @@ SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, Op *pOp){ } #endif +/* +** Initialize an array of N Mem element. +*/ +static void initMemArray(Mem *p, int N, sqlite3 *db, u16 flags){ + while( (N--)>0 ){ + p->db = db; + p->flags = flags; + p->szMalloc = 0; +#ifdef SQLITE_DEBUG + p->pScopyFrom = 0; +#endif + p++; + } +} + /* ** Release an array of N Mem elements */ static void releaseMemArray(Mem *p, int N){ if( p && N ){ - Mem *pEnd; + Mem *pEnd = &p[N]; sqlite3 *db = p->db; - u8 malloc_failed = db->mallocFailed; if( db->pnBytesFreed ){ - for(pEnd=&p[N]; pzMalloc); - } + do{ + if( p->szMalloc ) sqlite3DbFree(db, p->zMalloc); + }while( (++p)flags & MEM_Agg ); + testcase( p->flags & MEM_Dyn ); + testcase( p->flags & MEM_Frame ); + testcase( p->flags & MEM_RowSet ); if( p->flags&(MEM_Agg|MEM_Dyn|MEM_Frame|MEM_RowSet) ){ sqlite3VdbeMemRelease(p); - }else if( p->zMalloc ){ + }else if( p->szMalloc ){ sqlite3DbFree(db, p->zMalloc); - p->zMalloc = 0; + p->szMalloc = 0; } - p->flags = MEM_Invalid; - } - db->mallocFailed = malloc_failed; + p->flags = MEM_Undefined; + }while( (++p)v, apCsr[i]); } releaseMemArray(aMem, p->nChildMem); + sqlite3VdbeDeleteAuxData(p->v->db, &p->pAuxData, -1, 0); sqlite3DbFree(p->v->db, p); } @@ -62629,10 +72796,10 @@ SQLITE_PRIVATE int sqlite3VdbeList( releaseMemArray(pMem, 8); p->pResultSet = 0; - if( p->rc==SQLITE_NOMEM ){ + if( p->rc==SQLITE_NOMEM_BKPT ){ /* This happens if a malloc() inside a call to sqlite3_column_text() or ** sqlite3_column_text16() failed. */ - db->mallocFailed = 1; + sqlite3OomFault(db); return SQLITE_ERROR; } @@ -62671,7 +72838,7 @@ SQLITE_PRIVATE int sqlite3VdbeList( }else if( db->u1.isInterrupted ){ p->rc = SQLITE_INTERRUPT; rc = SQLITE_ERROR; - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3ErrStr(p->rc)); + sqlite3VdbeError(p, sqlite3ErrStr(p->rc)); }else{ char *zP4; Op *pOp; @@ -62691,7 +72858,6 @@ SQLITE_PRIVATE int sqlite3VdbeList( } if( p->explain==1 ){ pMem->flags = MEM_Int; - pMem->type = SQLITE_INTEGER; pMem->u.i = i; /* Program counter */ pMem++; @@ -62699,7 +72865,6 @@ SQLITE_PRIVATE int sqlite3VdbeList( pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */ assert( pMem->z!=0 ); pMem->n = sqlite3Strlen30(pMem->z); - pMem->type = SQLITE_TEXT; pMem->enc = SQLITE_UTF8; pMem++; @@ -62725,59 +72890,53 @@ SQLITE_PRIVATE int sqlite3VdbeList( pMem->flags = MEM_Int; pMem->u.i = pOp->p1; /* P1 */ - pMem->type = SQLITE_INTEGER; pMem++; pMem->flags = MEM_Int; pMem->u.i = pOp->p2; /* P2 */ - pMem->type = SQLITE_INTEGER; pMem++; pMem->flags = MEM_Int; pMem->u.i = pOp->p3; /* P3 */ - pMem->type = SQLITE_INTEGER; pMem++; - if( sqlite3VdbeMemGrow(pMem, 32, 0) ){ /* P4 */ + if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */ assert( p->db->mallocFailed ); return SQLITE_ERROR; } - pMem->flags = MEM_Dyn|MEM_Str|MEM_Term; - zP4 = displayP4(pOp, pMem->z, 32); + pMem->flags = MEM_Str|MEM_Term; + zP4 = displayP4(pOp, pMem->z, pMem->szMalloc); if( zP4!=pMem->z ){ + pMem->n = 0; sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0); }else{ assert( pMem->z!=0 ); pMem->n = sqlite3Strlen30(pMem->z); pMem->enc = SQLITE_UTF8; } - pMem->type = SQLITE_TEXT; pMem++; if( p->explain==1 ){ - if( sqlite3VdbeMemGrow(pMem, 4, 0) ){ + if( sqlite3VdbeMemClearAndResize(pMem, 4) ){ assert( p->db->mallocFailed ); return SQLITE_ERROR; } - pMem->flags = MEM_Dyn|MEM_Str|MEM_Term; + pMem->flags = MEM_Str|MEM_Term; pMem->n = 2; sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5); /* P5 */ - pMem->type = SQLITE_TEXT; pMem->enc = SQLITE_UTF8; pMem++; #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - if( sqlite3VdbeMemGrow(pMem, 500, 0) ){ + if( sqlite3VdbeMemClearAndResize(pMem, 500) ){ assert( p->db->mallocFailed ); return SQLITE_ERROR; } - pMem->flags = MEM_Dyn|MEM_Str|MEM_Term; + pMem->flags = MEM_Str|MEM_Term; pMem->n = displayComment(pOp, zP4, pMem->z, 500); - pMem->type = SQLITE_TEXT; pMem->enc = SQLITE_UTF8; #else pMem->flags = MEM_Null; /* Comment */ - pMem->type = SQLITE_NULL; #endif } @@ -62800,7 +72959,7 @@ SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe *p){ z = p->zSql; }else if( p->nOp>=1 ){ const VdbeOp *pOp = &p->aOp[0]; - if( pOp->opcode==OP_Trace && pOp->p4.z!=0 ){ + if( pOp->opcode==OP_Init && pOp->p4.z!=0 ){ z = pOp->p4.z; while( sqlite3Isspace(*z) ) z++; } @@ -62819,7 +72978,7 @@ SQLITE_PRIVATE void sqlite3VdbeIOTraceSql(Vdbe *p){ if( sqlite3IoTrace==0 ) return; if( nOp<1 ) return; pOp = &p->aOp[0]; - if( pOp->opcode==OP_Trace && pOp->p4.z!=0 ){ + if( pOp->opcode==OP_Init && pOp->p4.z!=0 ){ int i, j; char z[1000]; sqlite3_snprintf(sizeof(z), z, "%s", pOp->p4.z); @@ -62839,43 +72998,46 @@ SQLITE_PRIVATE void sqlite3VdbeIOTraceSql(Vdbe *p){ } #endif /* !SQLITE_OMIT_TRACE && SQLITE_ENABLE_IOTRACE */ -/* -** Allocate space from a fixed size buffer and return a pointer to -** that space. If insufficient space is available, return NULL. +/* An instance of this object describes bulk memory available for use +** by subcomponents of a prepared statement. Space is allocated out +** of a ReusableSpace object by the allocSpace() routine below. +*/ +struct ReusableSpace { + u8 *pSpace; /* Available memory */ + int nFree; /* Bytes of available memory */ + int nNeeded; /* Total bytes that could not be allocated */ +}; + +/* Try to allocate nByte bytes of 8-byte aligned bulk memory for pBuf +** from the ReusableSpace object. Return a pointer to the allocated +** memory on success. If insufficient memory is available in the +** ReusableSpace object, increase the ReusableSpace.nNeeded +** value by the amount needed and return NULL. ** -** The pBuf parameter is the initial value of a pointer which will -** receive the new memory. pBuf is normally NULL. If pBuf is not -** NULL, it means that memory space has already been allocated and that -** this routine should not allocate any new memory. When pBuf is not -** NULL simply return pBuf. Only allocate new memory space when pBuf -** is NULL. +** If pBuf is not initially NULL, that means that the memory has already +** been allocated by a prior call to this routine, so just return a copy +** of pBuf and leave ReusableSpace unchanged. ** -** nByte is the number of bytes of space needed. -** -** *ppFrom points to available space and pEnd points to the end of the -** available space. When space is allocated, *ppFrom is advanced past -** the end of the allocated space. -** -** *pnByte is a counter of the number of bytes of space that have failed -** to allocate. If there is insufficient space in *ppFrom to satisfy the -** request, then increment *pnByte by the amount of the request. +** This allocator is employed to repurpose unused slots at the end of the +** opcode array of prepared state for other memory needs of the prepared +** statement. */ static void *allocSpace( - void *pBuf, /* Where return pointer will be stored */ - int nByte, /* Number of bytes to allocate */ - u8 **ppFrom, /* IN/OUT: Allocate from *ppFrom */ - u8 *pEnd, /* Pointer to 1 byte past the end of *ppFrom buffer */ - int *pnByte /* If allocation cannot be made, increment *pnByte */ + struct ReusableSpace *p, /* Bulk memory available for allocation */ + void *pBuf, /* Pointer to a prior allocation */ + int nByte /* Bytes of memory needed */ ){ - assert( EIGHT_BYTE_ALIGNMENT(*ppFrom) ); - if( pBuf ) return pBuf; - nByte = ROUND8(nByte); - if( &(*ppFrom)[nByte] <= pEnd ){ - pBuf = (void*)*ppFrom; - *ppFrom += nByte; - }else{ - *pnByte += nByte; + assert( EIGHT_BYTE_ALIGNMENT(p->pSpace) ); + if( pBuf==0 ){ + nByte = ROUND8(nByte); + if( nByte <= p->nFree ){ + p->nFree -= nByte; + pBuf = &p->pSpace[p->nFree]; + }else{ + p->nNeeded += nByte; + } } + assert( EIGHT_BYTE_ALIGNMENT(pBuf) ); return pBuf; } @@ -62888,7 +73050,7 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ int i; #endif assert( p!=0 ); - assert( p->magic==VDBE_MAGIC_INIT ); + assert( p->magic==VDBE_MAGIC_INIT || p->magic==VDBE_MAGIC_RESET ); /* There should be at least one opcode. */ @@ -62898,14 +73060,13 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ p->magic = VDBE_MAGIC_RUN; #ifdef SQLITE_DEBUG - for(i=1; inMem; i++){ + for(i=0; inMem; i++){ assert( p->aMem[i].db==p->db ); } #endif p->pc = -1; p->rc = SQLITE_OK; p->errorAction = OE_Abort; - p->magic = VDBE_MAGIC_RUN; p->nChange = 0; p->cacheCtr = 1; p->minWriteFileFormat = 255; @@ -62922,13 +73083,13 @@ SQLITE_PRIVATE void sqlite3VdbeRewind(Vdbe *p){ /* ** Prepare a virtual machine for execution for the first time after ** creating the virtual machine. This involves things such -** as allocating stack space and initializing the program counter. +** as allocating registers and initializing the program counter. ** After the VDBE has be prepped, it can be executed by one or more ** calls to sqlite3VdbeExec(). ** -** This function may be called exact once on a each virtual machine. +** This function may be called exactly once on each virtual machine. ** After this routine is called the VM has been "packaged" and is ready -** to run. After this routine is called, futher calls to +** to run. After this routine is called, further calls to ** sqlite3VdbeAddOp() functions are prohibited. This routine disconnects ** the Vdbe from the Parse object that helped generate it so that the ** the Vdbe becomes an independent entity and the Parse object can be @@ -62946,11 +73107,8 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( int nMem; /* Number of VM memory registers */ int nCursor; /* Number of cursors required */ int nArg; /* Number of arguments in subprograms */ - int nOnce; /* Number of OP_Once instructions */ int n; /* Loop counter */ - u8 *zCsr; /* Memory available for allocation */ - u8 *zEnd; /* First byte past allocated memory */ - int nByte; /* How much extra memory is needed */ + struct ReusableSpace x; /* Reusable bulk memory */ assert( p!=0 ); assert( p->nOp>0 ); @@ -62963,85 +73121,75 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady( nMem = pParse->nMem; nCursor = pParse->nTab; nArg = pParse->nMaxArg; - nOnce = pParse->nOnce; - if( nOnce==0 ) nOnce = 1; /* Ensure at least one byte in p->aOnceFlag[] */ - /* For each cursor required, also allocate a memory cell. Memory - ** cells (nMem+1-nCursor)..nMem, inclusive, will never be used by - ** the vdbe program. Instead they are used to allocate space for - ** VdbeCursor/BtCursor structures. The blob of memory associated with - ** cursor 0 is stored in memory cell nMem. Memory cell (nMem-1) - ** stores the blob of memory associated with cursor 1, etc. - ** + /* Each cursor uses a memory cell. The first cursor (cursor 0) can + ** use aMem[0] which is not otherwise used by the VDBE program. Allocate + ** space at the end of aMem[] for cursors 1 and greater. ** See also: allocateCursor(). */ nMem += nCursor; + if( nCursor==0 && nMem>0 ) nMem++; /* Space for aMem[0] even if not used */ - /* Allocate space for memory registers, SQL variables, VDBE cursors and - ** an array to marshal SQL function arguments in. + /* Figure out how much reusable memory is available at the end of the + ** opcode array. This extra memory will be reallocated for other elements + ** of the prepared statement. */ - zCsr = (u8*)&p->aOp[p->nOp]; /* Memory avaliable for allocation */ - zEnd = (u8*)&p->aOp[pParse->nOpAlloc]; /* First byte past end of zCsr[] */ + n = ROUND8(sizeof(Op)*p->nOp); /* Bytes of opcode memory used */ + x.pSpace = &((u8*)p->aOp)[n]; /* Unused opcode memory */ + assert( EIGHT_BYTE_ALIGNMENT(x.pSpace) ); + x.nFree = ROUNDDOWN8(pParse->szOpAlloc - n); /* Bytes of unused memory */ + assert( x.nFree>=0 ); + assert( EIGHT_BYTE_ALIGNMENT(&x.pSpace[x.nFree]) ); resolveP2Values(p, &nArg); p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort); if( pParse->explain && nMem<10 ){ nMem = 10; } - memset(zCsr, 0, zEnd-zCsr); - zCsr += (zCsr - (u8*)0)&7; - assert( EIGHT_BYTE_ALIGNMENT(zCsr) ); p->expired = 0; - /* Memory for registers, parameters, cursor, etc, is allocated in two - ** passes. On the first pass, we try to reuse unused space at the + /* Memory for registers, parameters, cursor, etc, is allocated in one or two + ** passes. On the first pass, we try to reuse unused memory at the ** end of the opcode array. If we are unable to satisfy all memory ** requirements by reusing the opcode array tail, then the second - ** pass will fill in the rest using a fresh allocation. + ** pass will fill in the remainder using a fresh memory allocation. ** ** This two-pass approach that reuses as much memory as possible from - ** the leftover space at the end of the opcode array can significantly + ** the leftover memory at the end of the opcode array. This can significantly ** reduce the amount of memory held by a prepared statement. */ do { - nByte = 0; - p->aMem = allocSpace(p->aMem, nMem*sizeof(Mem), &zCsr, zEnd, &nByte); - p->aVar = allocSpace(p->aVar, nVar*sizeof(Mem), &zCsr, zEnd, &nByte); - p->apArg = allocSpace(p->apArg, nArg*sizeof(Mem*), &zCsr, zEnd, &nByte); - p->azVar = allocSpace(p->azVar, nVar*sizeof(char*), &zCsr, zEnd, &nByte); - p->apCsr = allocSpace(p->apCsr, nCursor*sizeof(VdbeCursor*), - &zCsr, zEnd, &nByte); - p->aOnceFlag = allocSpace(p->aOnceFlag, nOnce, &zCsr, zEnd, &nByte); - if( nByte ){ - p->pFree = sqlite3DbMallocZero(db, nByte); - } - zCsr = p->pFree; - zEnd = &zCsr[nByte]; - }while( nByte && !db->mallocFailed ); + x.nNeeded = 0; + p->aMem = allocSpace(&x, p->aMem, nMem*sizeof(Mem)); + p->aVar = allocSpace(&x, p->aVar, nVar*sizeof(Mem)); + p->apArg = allocSpace(&x, p->apArg, nArg*sizeof(Mem*)); + p->apCsr = allocSpace(&x, p->apCsr, nCursor*sizeof(VdbeCursor*)); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + p->anExec = allocSpace(&x, p->anExec, p->nOp*sizeof(i64)); +#endif + if( x.nNeeded==0 ) break; + x.pSpace = p->pFree = sqlite3DbMallocRawNN(db, x.nNeeded); + x.nFree = x.nNeeded; + }while( !db->mallocFailed ); - p->nCursor = nCursor; - p->nOnceFlag = nOnce; - if( p->aVar ){ - p->nVar = (ynVar)nVar; - for(n=0; naVar[n].flags = MEM_Null; - p->aVar[n].db = db; - } - } - if( p->azVar ){ - p->nzVar = pParse->nzVar; - memcpy(p->azVar, pParse->azVar, p->nzVar*sizeof(p->azVar[0])); - memset(pParse->azVar, 0, pParse->nzVar*sizeof(pParse->azVar[0])); - } - if( p->aMem ){ - p->aMem--; /* aMem[] goes from 1..nMem */ - p->nMem = nMem; /* not from 0..nMem-1 */ - for(n=1; n<=nMem; n++){ - p->aMem[n].flags = MEM_Invalid; - p->aMem[n].db = db; - } - } + p->pVList = pParse->pVList; + pParse->pVList = 0; p->explain = pParse->explain; + if( db->mallocFailed ){ + p->nVar = 0; + p->nCursor = 0; + p->nMem = 0; + }else{ + p->nCursor = nCursor; + p->nVar = (ynVar)nVar; + initMemArray(p->aVar, nVar, db, MEM_Null); + p->nMem = nMem; + initMemArray(p->aMem, nMem, db, MEM_Undefined); + memset(p->apCsr, 0, nCursor*sizeof(VdbeCursor*)); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + memset(p->anExec, 0, p->nOp*sizeof(i64)); +#endif + } sqlite3VdbeRewind(p); } @@ -63053,23 +73201,50 @@ SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *p, VdbeCursor *pCx){ if( pCx==0 ){ return; } - sqlite3VdbeSorterClose(p->db, pCx); - if( pCx->pBt ){ - sqlite3BtreeClose(pCx->pBt); - /* The pCx->pCursor will be close automatically, if it exists, by - ** the call above. */ - }else if( pCx->pCursor ){ - sqlite3BtreeCloseCursor(pCx->pCursor); - } + assert( pCx->pBtx==0 || pCx->eCurType==CURTYPE_BTREE ); + switch( pCx->eCurType ){ + case CURTYPE_SORTER: { + sqlite3VdbeSorterClose(p->db, pCx); + break; + } + case CURTYPE_BTREE: { + if( pCx->pBtx ){ + sqlite3BtreeClose(pCx->pBtx); + /* The pCx->pCursor will be close automatically, if it exists, by + ** the call above. */ + }else{ + assert( pCx->uc.pCursor!=0 ); + sqlite3BtreeCloseCursor(pCx->uc.pCursor); + } + break; + } #ifndef SQLITE_OMIT_VIRTUALTABLE - if( pCx->pVtabCursor ){ - sqlite3_vtab_cursor *pVtabCursor = pCx->pVtabCursor; - const sqlite3_module *pModule = pVtabCursor->pVtab->pModule; - p->inVtabMethod = 1; - pModule->xClose(pVtabCursor); - p->inVtabMethod = 0; - } + case CURTYPE_VTAB: { + sqlite3_vtab_cursor *pVCur = pCx->uc.pVCur; + const sqlite3_module *pModule = pVCur->pVtab->pModule; + assert( pVCur->pVtab->nRef>0 ); + pVCur->pVtab->nRef--; + pModule->xClose(pVCur); + break; + } #endif + } +} + +/* +** Close all cursors in the current frame. +*/ +static void closeCursorsInFrame(Vdbe *p){ + if( p->apCsr ){ + int i; + for(i=0; inCursor; i++){ + VdbeCursor *pC = p->apCsr[i]; + if( pC ){ + sqlite3VdbeFreeCursor(p, pC); + p->apCsr[i] = 0; + } + } + } } /* @@ -63079,8 +73254,10 @@ SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *p, VdbeCursor *pCx){ */ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){ Vdbe *v = pFrame->v; - v->aOnceFlag = pFrame->aOnceFlag; - v->nOnceFlag = pFrame->nOnceFlag; + closeCursorsInFrame(v); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + v->anExec = pFrame->anExec; +#endif v->aOp = pFrame->aOp; v->nOp = pFrame->nOp; v->aMem = pFrame->aMem; @@ -63089,6 +73266,10 @@ SQLITE_PRIVATE int sqlite3VdbeFrameRestore(VdbeFrame *pFrame){ v->nCursor = pFrame->nCursor; v->db->lastRowid = pFrame->lastRowid; v->nChange = pFrame->nChange; + v->db->nChange = pFrame->nDbChange; + sqlite3VdbeDeleteAuxData(v->db, &v->pAuxData, -1, 0); + v->pAuxData = pFrame->pAuxData; + pFrame->pAuxData = 0; return pFrame->pc; } @@ -63105,22 +73286,13 @@ static void closeAllCursors(Vdbe *p){ VdbeFrame *pFrame; for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent); sqlite3VdbeFrameRestore(pFrame); + p->pFrame = 0; + p->nFrame = 0; } - p->pFrame = 0; - p->nFrame = 0; - - if( p->apCsr ){ - int i; - for(i=0; inCursor; i++){ - VdbeCursor *pC = p->apCsr[i]; - if( pC ){ - sqlite3VdbeFreeCursor(p, pC); - p->apCsr[i] = 0; - } - } - } + assert( p->nFrame==0 ); + closeCursorsInFrame(p); if( p->aMem ){ - releaseMemArray(&p->aMem[1], p->nMem); + releaseMemArray(p->aMem, p->nMem); } while( p->pDelFrame ){ VdbeFrame *pDel = p->pDelFrame; @@ -63129,16 +73301,12 @@ static void closeAllCursors(Vdbe *p){ } /* Delete any auxdata allocations made by the VM */ - sqlite3VdbeDeleteAuxData(p, -1, 0); + if( p->pAuxData ) sqlite3VdbeDeleteAuxData(p->db, &p->pAuxData, -1, 0); assert( p->pAuxData==0 ); } /* -** Clean up the VM after execution. -** -** This routine will automatically close any cursors, lists, and/or -** sorters that were left open. It also deletes the values of -** variables in the aVar[] array. +** Clean up the VM after a single run. */ static void Cleanup(Vdbe *p){ sqlite3 *db = p->db; @@ -63149,7 +73317,7 @@ static void Cleanup(Vdbe *p){ int i; if( p->apCsr ) for(i=0; inCursor; i++) assert( p->apCsr[i]==0 ); if( p->aMem ){ - for(i=1; i<=p->nMem; i++) assert( p->aMem[i].flags==MEM_Invalid ); + for(i=0; inMem; i++) assert( p->aMem[i].flags==MEM_Undefined ); } #endif @@ -63173,13 +73341,9 @@ SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe *p, int nResColumn){ sqlite3DbFree(db, p->aColName); n = nResColumn*COLNAME_N; p->nResColumn = (u16)nResColumn; - p->aColName = pColName = (Mem*)sqlite3DbMallocZero(db, sizeof(Mem)*n ); + p->aColName = pColName = (Mem*)sqlite3DbMallocRawNN(db, sizeof(Mem)*n ); if( p->aColName==0 ) return; - while( n-- > 0 ){ - pColName->flags = MEM_Null; - pColName->db = p->db; - pColName++; - } + initMemArray(p->aColName, n, p->db, MEM_Null); } /* @@ -63205,7 +73369,7 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName( assert( vardb->mallocFailed ){ assert( !zName || xDel!=SQLITE_DYNAMIC ); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } assert( p->aColName!=0 ); pColName = &(p->aColName[idx+var*p->nResColumn]); @@ -63222,7 +73386,9 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName( */ static int vdbeCommit(sqlite3 *db, Vdbe *p){ int i; - int nTrans = 0; /* Number of databases with an active write-transaction */ + int nTrans = 0; /* Number of databases with an active write-transaction + ** that are candidates for a two-phase commit using a + ** master-journal */ int rc = SQLITE_OK; int needXcommit = 0; @@ -63250,10 +73416,28 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ for(i=0; rc==SQLITE_OK && inDb; i++){ Btree *pBt = db->aDb[i].pBt; if( sqlite3BtreeIsInTrans(pBt) ){ + /* Whether or not a database might need a master journal depends upon + ** its journal mode (among other things). This matrix determines which + ** journal modes use a master journal and which do not */ + static const u8 aMJNeeded[] = { + /* DELETE */ 1, + /* PERSIST */ 1, + /* OFF */ 0, + /* TRUNCATE */ 1, + /* MEMORY */ 0, + /* WAL */ 0 + }; + Pager *pPager; /* Pager associated with pBt */ needXcommit = 1; - if( i!=1 ) nTrans++; sqlite3BtreeEnter(pBt); - rc = sqlite3PagerExclusiveLock(sqlite3BtreePager(pBt)); + pPager = sqlite3BtreePager(pBt); + if( db->aDb[i].safety_level!=PAGER_SYNCHRONOUS_OFF + && aMJNeeded[sqlite3PagerGetJournalMode(pPager)] + ){ + assert( i!=1 ); + nTrans++; + } + rc = sqlite3PagerExclusiveLock(pPager); sqlite3BtreeLeave(pBt); } } @@ -63306,12 +73490,11 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* The complex case - There is a multi-file write-transaction active. ** This requires a master journal file to ensure the transaction is - ** committed atomicly. + ** committed atomically. */ #ifndef SQLITE_OMIT_DISKIO else{ sqlite3_vfs *pVfs = db->pVfs; - int needSync = 0; char *zMaster = 0; /* File-name for the master journal */ char const *zMainFile = sqlite3BtreeGetFilename(db->aDb[0].pBt); sqlite3_file *pMaster = 0; @@ -63323,7 +73506,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* Select a master journal file name */ nMainFile = sqlite3Strlen30(zMainFile); zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz", zMainFile); - if( zMaster==0 ) return SQLITE_NOMEM; + if( zMaster==0 ) return SQLITE_NOMEM_BKPT; do { u32 iRandom; if( retryCount ){ @@ -63371,9 +73554,6 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ continue; /* Ignore TEMP and :memory: databases */ } assert( zFile[0]!=0 ); - if( !needSync && !sqlite3BtreeSyncDisabled(pBt) ){ - needSync = 1; - } rc = sqlite3OsWrite(pMaster, zFile, sqlite3Strlen30(zFile)+1, offset); offset += sqlite3Strlen30(zFile)+1; if( rc!=SQLITE_OK ){ @@ -63388,8 +73568,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* Sync the master journal file. If the IOCAP_SEQUENTIAL device ** flag is set this is not required. */ - if( needSync - && 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL) + if( 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL) && SQLITE_OK!=(rc = sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL)) ){ sqlite3OsCloseFree(pMaster); @@ -63474,7 +73653,7 @@ static void checkActiveVdbeCnt(sqlite3 *db){ int nRead = 0; p = db->pVdbe; while( p ){ - if( p->magic==VDBE_MAGIC_RUN && p->pc>=0 ){ + if( sqlite3_stmt_busy((sqlite3_stmt*)p) ){ cnt++; if( p->readOnly==0 ) nWrite++; if( p->bIsReader ) nRead++; @@ -63499,60 +73678,59 @@ static void checkActiveVdbeCnt(sqlite3 *db){ ** If an IO error occurs, an SQLITE_IOERR_XXX error code is returned. ** Otherwise SQLITE_OK. */ -SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *p, int eOp){ +static SQLITE_NOINLINE int vdbeCloseStatement(Vdbe *p, int eOp){ sqlite3 *const db = p->db; int rc = SQLITE_OK; + int i; + const int iSavepoint = p->iStatement-1; - /* If p->iStatement is greater than zero, then this Vdbe opened a - ** statement transaction that should be closed here. The only exception - ** is that an IO error may have occurred, causing an emergency rollback. - ** In this case (db->nStatement==0), and there is nothing to do. - */ - if( db->nStatement && p->iStatement ){ - int i; - const int iSavepoint = p->iStatement-1; + assert( eOp==SAVEPOINT_ROLLBACK || eOp==SAVEPOINT_RELEASE); + assert( db->nStatement>0 ); + assert( p->iStatement==(db->nStatement+db->nSavepoint) ); - assert( eOp==SAVEPOINT_ROLLBACK || eOp==SAVEPOINT_RELEASE); - assert( db->nStatement>0 ); - assert( p->iStatement==(db->nStatement+db->nSavepoint) ); - - for(i=0; inDb; i++){ - int rc2 = SQLITE_OK; - Btree *pBt = db->aDb[i].pBt; - if( pBt ){ - if( eOp==SAVEPOINT_ROLLBACK ){ - rc2 = sqlite3BtreeSavepoint(pBt, SAVEPOINT_ROLLBACK, iSavepoint); - } - if( rc2==SQLITE_OK ){ - rc2 = sqlite3BtreeSavepoint(pBt, SAVEPOINT_RELEASE, iSavepoint); - } - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - } - db->nStatement--; - p->iStatement = 0; - - if( rc==SQLITE_OK ){ + for(i=0; inDb; i++){ + int rc2 = SQLITE_OK; + Btree *pBt = db->aDb[i].pBt; + if( pBt ){ if( eOp==SAVEPOINT_ROLLBACK ){ - rc = sqlite3VtabSavepoint(db, SAVEPOINT_ROLLBACK, iSavepoint); + rc2 = sqlite3BtreeSavepoint(pBt, SAVEPOINT_ROLLBACK, iSavepoint); + } + if( rc2==SQLITE_OK ){ + rc2 = sqlite3BtreeSavepoint(pBt, SAVEPOINT_RELEASE, iSavepoint); } if( rc==SQLITE_OK ){ - rc = sqlite3VtabSavepoint(db, SAVEPOINT_RELEASE, iSavepoint); + rc = rc2; } } + } + db->nStatement--; + p->iStatement = 0; - /* If the statement transaction is being rolled back, also restore the - ** database handles deferred constraint counter to the value it had when - ** the statement transaction was opened. */ + if( rc==SQLITE_OK ){ if( eOp==SAVEPOINT_ROLLBACK ){ - db->nDeferredCons = p->nStmtDefCons; - db->nDeferredImmCons = p->nStmtDefImmCons; + rc = sqlite3VtabSavepoint(db, SAVEPOINT_ROLLBACK, iSavepoint); } + if( rc==SQLITE_OK ){ + rc = sqlite3VtabSavepoint(db, SAVEPOINT_RELEASE, iSavepoint); + } + } + + /* If the statement transaction is being rolled back, also restore the + ** database handles deferred constraint counter to the value it had when + ** the statement transaction was opened. */ + if( eOp==SAVEPOINT_ROLLBACK ){ + db->nDeferredCons = p->nStmtDefCons; + db->nDeferredImmCons = p->nStmtDefImmCons; } return rc; } +SQLITE_PRIVATE int sqlite3VdbeCloseStatement(Vdbe *p, int eOp){ + if( p->db->nStatement && p->iStatement ){ + return vdbeCloseStatement(p, eOp); + } + return SQLITE_OK; +} + /* ** This function is called when a transaction opened by the database @@ -63572,7 +73750,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *p, int deferred){ ){ p->rc = SQLITE_CONSTRAINT_FOREIGNKEY; p->errorAction = OE_Abort; - sqlite3SetString(&p->zErrMsg, db, "FOREIGN KEY constraint failed"); + sqlite3VdbeError(p, "FOREIGN KEY constraint failed"); return SQLITE_ERROR; } return SQLITE_OK; @@ -63612,10 +73790,9 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ ** one, or the complete transaction if there is no statement transaction. */ - if( p->db->mallocFailed ){ - p->rc = SQLITE_NOMEM; + if( db->mallocFailed ){ + p->rc = SQLITE_NOMEM_BKPT; } - if( p->aOnceFlag ) memset(p->aOnceFlag, 0, p->nOnceFlag); closeAllCursors(p); if( p->magic!=VDBE_MAGIC_RUN ){ return SQLITE_OK; @@ -63634,7 +73811,6 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ /* Check for one of the special errors */ mrc = p->rc & 0xff; - assert( p->rc!=SQLITE_IOERR_BLOCKED ); /* This error no longer exists */ isSpecialError = mrc==SQLITE_NOMEM || mrc==SQLITE_IOERR || mrc==SQLITE_INTERRUPT || mrc==SQLITE_FULL; if( isSpecialError ){ @@ -63660,6 +73836,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK); sqlite3CloseSavepoints(db); db->autoCommit = 1; + p->nChange = 0; } } } @@ -63700,6 +73877,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ }else if( rc!=SQLITE_OK ){ p->rc = rc; sqlite3RollbackAll(db, SQLITE_OK); + p->nChange = 0; }else{ db->nDeferredCons = 0; db->nDeferredImmCons = 0; @@ -63708,6 +73886,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ } }else{ sqlite3RollbackAll(db, SQLITE_OK); + p->nChange = 0; } db->nStatement = 0; }else if( eStatementOp==0 ){ @@ -63719,6 +73898,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK); sqlite3CloseSavepoints(db); db->autoCommit = 1; + p->nChange = 0; } } @@ -63739,6 +73919,7 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK); sqlite3CloseSavepoints(db); db->autoCommit = 1; + p->nChange = 0; } } @@ -63769,8 +73950,8 @@ SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe *p){ } p->magic = VDBE_MAGIC_HALT; checkActiveVdbeCnt(db); - if( p->db->mallocFailed ){ - p->rc = SQLITE_NOMEM; + if( db->mallocFailed ){ + p->rc = SQLITE_NOMEM_BKPT; } /* If the auto-commit flag is set to true, then any locks that were held @@ -63806,15 +73987,15 @@ SQLITE_PRIVATE int sqlite3VdbeTransferError(Vdbe *p){ sqlite3 *db = p->db; int rc = p->rc; if( p->zErrMsg ){ - u8 mallocFailed = db->mallocFailed; + db->bBenignMalloc++; sqlite3BeginBenignMalloc(); if( db->pErr==0 ) db->pErr = sqlite3ValueNew(db); sqlite3ValueSetStr(db->pErr, -1, p->zErrMsg, SQLITE_UTF8, SQLITE_TRANSIENT); sqlite3EndBenignMalloc(); - db->mallocFailed = mallocFailed; + db->bBenignMalloc--; db->errCode = rc; }else{ - sqlite3Error(db, rc, 0); + sqlite3Error(db, rc); } return rc; } @@ -63877,7 +74058,7 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ ** to sqlite3_step(). For consistency (since sqlite3_step() was ** called), set the database error in this case as well. */ - sqlite3Error(db, p->rc, p->zErrMsg ? "%s" : 0, p->zErrMsg); + sqlite3ErrorWithMsg(db, p->rc, p->zErrMsg ? "%s" : 0, p->zErrMsg); sqlite3DbFree(db, p->zErrMsg); p->zErrMsg = 0; } @@ -63898,12 +74079,24 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ fprintf(out, "%02x", p->aOp[i].opcode); } fprintf(out, "\n"); + if( p->zSql ){ + char c, pc = 0; + fprintf(out, "-- "); + for(i=0; (c = p->zSql[i])!=0; i++){ + if( pc=='\n' ) fprintf(out, "-- "); + putc(c, out); + pc = c; + } + if( pc!='\n' ) fprintf(out, "\n"); + } for(i=0; inOp; i++){ - fprintf(out, "%6d %10lld %8lld ", + char zHdr[100]; + sqlite3_snprintf(sizeof(zHdr), zHdr, "%6u %12llu %8llu ", p->aOp[i].cnt, p->aOp[i].cycles, p->aOp[i].cnt>0 ? p->aOp[i].cycles/p->aOp[i].cnt : 0 ); + fprintf(out, "%s", zHdr); sqlite3VdbePrintOp(out, i, &p->aOp[i]); } fclose(out); @@ -63911,7 +74104,7 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){ } #endif p->iCurrentTime = 0; - p->magic = VDBE_MAGIC_INIT; + p->magic = VDBE_MAGIC_RESET; return p->rc & db->errMask; } @@ -63943,10 +74136,9 @@ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe *p){ ** from left to right), or ** ** * the corresponding bit in argument mask is clear (where the first -** function parameter corrsponds to bit 0 etc.). +** function parameter corresponds to bit 0 etc.). */ -SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(Vdbe *pVdbe, int iOp, int mask){ - AuxData **pp = &pVdbe->pAuxData; +SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(sqlite3 *db, AuxData **pp, int iOp, int mask){ while( *pp ){ AuxData *pAux = *pp; if( (iOp<0) @@ -63957,7 +74149,7 @@ SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(Vdbe *pVdbe, int iOp, int mask){ pAux->xDelete(pAux->pAux); } *pp = pAux->pNext; - sqlite3DbFree(pVdbe->db, pAux); + sqlite3DbFree(db, pAux); }else{ pp= &pAux->pNext; } @@ -63974,23 +74166,29 @@ SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(Vdbe *pVdbe, int iOp, int mask){ */ SQLITE_PRIVATE void sqlite3VdbeClearObject(sqlite3 *db, Vdbe *p){ SubProgram *pSub, *pNext; - int i; assert( p->db==0 || p->db==db ); - releaseMemArray(p->aVar, p->nVar); releaseMemArray(p->aColName, p->nResColumn*COLNAME_N); for(pSub=p->pProgram; pSub; pSub=pNext){ pNext = pSub->pNext; vdbeFreeOpArray(db, pSub->aOp, pSub->nOp); sqlite3DbFree(db, pSub); } - for(i=p->nzVar-1; i>=0; i--) sqlite3DbFree(db, p->azVar[i]); + if( p->magic!=VDBE_MAGIC_INIT ){ + releaseMemArray(p->aVar, p->nVar); + sqlite3DbFree(db, p->pVList); + sqlite3DbFree(db, p->pFree); + } vdbeFreeOpArray(db, p->aOp, p->nOp); sqlite3DbFree(db, p->aColName); sqlite3DbFree(db, p->zSql); - sqlite3DbFree(db, p->pFree); -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) - sqlite3DbFree(db, p->zExplain); - sqlite3DbFree(db, p->pExplain); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + { + int i; + for(i=0; inScan; i++){ + sqlite3DbFree(db, p->aScan[i].zName); + } + sqlite3DbFree(db, p->aScan); + } #endif } @@ -64018,6 +74216,60 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){ sqlite3DbFree(db, p); } +/* +** The cursor "p" has a pending seek operation that has not yet been +** carried out. Seek the cursor now. If an error occurs, return +** the appropriate error code. +*/ +static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){ + int res, rc; +#ifdef SQLITE_TEST + extern int sqlite3_search_count; +#endif + assert( p->deferredMoveto ); + assert( p->isTable ); + assert( p->eCurType==CURTYPE_BTREE ); + rc = sqlite3BtreeMovetoUnpacked(p->uc.pCursor, 0, p->movetoTarget, 0, &res); + if( rc ) return rc; + if( res!=0 ) return SQLITE_CORRUPT_BKPT; +#ifdef SQLITE_TEST + sqlite3_search_count++; +#endif + p->deferredMoveto = 0; + p->cacheStatus = CACHE_STALE; + return SQLITE_OK; +} + +/* +** Something has moved cursor "p" out of place. Maybe the row it was +** pointed to was deleted out from under it. Or maybe the btree was +** rebalanced. Whatever the cause, try to restore "p" to the place it +** is supposed to be pointing. If the row was deleted out from under the +** cursor, set the cursor to point to a NULL row. +*/ +static int SQLITE_NOINLINE handleMovedCursor(VdbeCursor *p){ + int isDifferentRow, rc; + assert( p->eCurType==CURTYPE_BTREE ); + assert( p->uc.pCursor!=0 ); + assert( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ); + rc = sqlite3BtreeCursorRestore(p->uc.pCursor, &isDifferentRow); + p->cacheStatus = CACHE_STALE; + if( isDifferentRow ) p->nullRow = 1; + return rc; +} + +/* +** Check to ensure that the cursor is valid. Restore the cursor +** if need be. Return any I/O error from the restore operation. +*/ +SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor *p){ + assert( p->eCurType==CURTYPE_BTREE ); + if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){ + return handleMovedCursor(p); + } + return SQLITE_OK; +} + /* ** Make sure the cursor p is ready to read or write the row to which it ** was last positioned. Return an error code if an OOM fault or I/O error @@ -64031,30 +74283,20 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){ ** If the cursor is already pointing to the correct row and that row has ** not been deleted out from under the cursor, then this routine is a no-op. */ -SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor *p){ - if( p->deferredMoveto ){ - int res, rc; -#ifdef SQLITE_TEST - extern int sqlite3_search_count; -#endif - assert( p->isTable ); - rc = sqlite3BtreeMovetoUnpacked(p->pCursor, 0, p->movetoTarget, 0, &res); - if( rc ) return rc; - p->lastRowid = p->movetoTarget; - if( res!=0 ) return SQLITE_CORRUPT_BKPT; - p->rowidIsValid = 1; -#ifdef SQLITE_TEST - sqlite3_search_count++; -#endif - p->deferredMoveto = 0; - p->cacheStatus = CACHE_STALE; - }else if( p->pCursor ){ - int hasMoved; - int rc = sqlite3BtreeCursorHasMoved(p->pCursor, &hasMoved); - if( rc ) return rc; - if( hasMoved ){ - p->cacheStatus = CACHE_STALE; - p->nullRow = 1; +SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){ + VdbeCursor *p = *pp; + if( p->eCurType==CURTYPE_BTREE ){ + if( p->deferredMoveto ){ + int iMap; + if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){ + *pp = p->pAltCursor; + *piCol = iMap - 1; + return SQLITE_OK; + } + return handleDeferredMoveto(p); + } + if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){ + return handleMovedCursor(p); } } return SQLITE_OK; @@ -64105,11 +74347,13 @@ SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor *p){ /* ** Return the serial-type for the value stored in pMem. */ -SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format){ +SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format, u32 *pLen){ int flags = pMem->flags; - int n; + u32 n; + assert( pLen!=0 ); if( flags&MEM_Null ){ + *pLen = 0; return 0; } if( flags&MEM_Int ){ @@ -64118,44 +74362,76 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialType(Mem *pMem, int file_format){ i64 i = pMem->u.i; u64 u; if( i<0 ){ - if( i<(-MAX_6BYTE) ) return 6; - /* Previous test prevents: u = -(-9223372036854775808) */ - u = -i; + u = ~i; }else{ u = i; } if( u<=127 ){ - return ((i&1)==i && file_format>=4) ? 8+(u32)u : 1; + if( (i&1)==i && file_format>=4 ){ + *pLen = 0; + return 8+(u32)u; + }else{ + *pLen = 1; + return 1; + } } - if( u<=32767 ) return 2; - if( u<=8388607 ) return 3; - if( u<=2147483647 ) return 4; - if( u<=MAX_6BYTE ) return 5; + if( u<=32767 ){ *pLen = 2; return 2; } + if( u<=8388607 ){ *pLen = 3; return 3; } + if( u<=2147483647 ){ *pLen = 4; return 4; } + if( u<=MAX_6BYTE ){ *pLen = 6; return 5; } + *pLen = 8; return 6; } if( flags&MEM_Real ){ + *pLen = 8; return 7; } assert( pMem->db->mallocFailed || flags&(MEM_Str|MEM_Blob) ); - n = pMem->n; + assert( pMem->n>=0 ); + n = (u32)pMem->n; if( flags & MEM_Zero ){ n += pMem->u.nZero; } - assert( n>=0 ); + *pLen = n; return ((n*2) + 12 + ((flags&MEM_Str)!=0)); } +/* +** The sizes for serial types less than 128 +*/ +static const u8 sqlite3SmallTypeSizes[] = { + /* 0 1 2 3 4 5 6 7 8 9 */ +/* 0 */ 0, 1, 2, 3, 4, 6, 8, 8, 0, 0, +/* 10 */ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, +/* 20 */ 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, +/* 30 */ 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, +/* 40 */ 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, +/* 50 */ 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, +/* 60 */ 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, +/* 70 */ 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, +/* 80 */ 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, +/* 90 */ 39, 39, 40, 40, 41, 41, 42, 42, 43, 43, +/* 100 */ 44, 44, 45, 45, 46, 46, 47, 47, 48, 48, +/* 110 */ 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, +/* 120 */ 54, 54, 55, 55, 56, 56, 57, 57 +}; + /* ** Return the length of the data corresponding to the supplied serial-type. */ SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32 serial_type){ - if( serial_type>=12 ){ + if( serial_type>=128 ){ return (serial_type-12)/2; }else{ - static const u8 aSize[] = { 0, 1, 2, 3, 4, 6, 8, 8, 0, 0, 0, 0 }; - return aSize[serial_type]; + assert( serial_type<12 + || sqlite3SmallTypeSizes[serial_type]==(serial_type - 12)/2 ); + return sqlite3SmallTypeSizes[serial_type]; } } +SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8 serial_type){ + assert( serial_type<128 ); + return sqlite3SmallTypeSizes[serial_type]; +} /* ** If we are on an architecture with mixed-endian floating @@ -64231,17 +74507,18 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){ u64 v; u32 i; if( serial_type==7 ){ - assert( sizeof(v)==sizeof(pMem->r) ); - memcpy(&v, &pMem->r, sizeof(v)); + assert( sizeof(v)==sizeof(pMem->u.r) ); + memcpy(&v, &pMem->u.r, sizeof(v)); swapMixedEndianFloat(v); }else{ v = pMem->u.i; } - len = i = sqlite3VdbeSerialTypeLen(serial_type); - while( i-- ){ - buf[i] = (u8)(v&0xFF); + len = i = sqlite3SmallTypeSizes[serial_type]; + assert( i>0 ); + do{ + buf[--i] = (u8)(v&0xFF); v >>= 8; - } + }while( i ); return len; } @@ -64250,7 +74527,7 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){ assert( pMem->n + ((pMem->flags & MEM_Zero)?pMem->u.nZero:0) == (int)sqlite3VdbeSerialTypeLen(serial_type) ); len = pMem->n; - memcpy(buf, pMem->z, len); + if( len>0 ) memcpy(buf, pMem->z, len); return len; } @@ -64258,103 +74535,145 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){ return 0; } +/* Input "x" is a sequence of unsigned characters that represent a +** big-endian integer. Return the equivalent native integer +*/ +#define ONE_BYTE_INT(x) ((i8)(x)[0]) +#define TWO_BYTE_INT(x) (256*(i8)((x)[0])|(x)[1]) +#define THREE_BYTE_INT(x) (65536*(i8)((x)[0])|((x)[1]<<8)|(x)[2]) +#define FOUR_BYTE_UINT(x) (((u32)(x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3]) +#define FOUR_BYTE_INT(x) (16777216*(i8)((x)[0])|((x)[1]<<16)|((x)[2]<<8)|(x)[3]) + /* ** Deserialize the data blob pointed to by buf as serial type serial_type ** and store the result in pMem. Return the number of bytes read. +** +** This function is implemented as two separate routines for performance. +** The few cases that require local variables are broken out into a separate +** routine so that in most cases the overhead of moving the stack pointer +** is avoided. */ +static u32 SQLITE_NOINLINE serialGet( + const unsigned char *buf, /* Buffer to deserialize from */ + u32 serial_type, /* Serial type to deserialize */ + Mem *pMem /* Memory cell to write value into */ +){ + u64 x = FOUR_BYTE_UINT(buf); + u32 y = FOUR_BYTE_UINT(buf+4); + x = (x<<32) + y; + if( serial_type==6 ){ + /* EVIDENCE-OF: R-29851-52272 Value is a big-endian 64-bit + ** twos-complement integer. */ + pMem->u.i = *(i64*)&x; + pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); + }else{ + /* EVIDENCE-OF: R-57343-49114 Value is a big-endian IEEE 754-2008 64-bit + ** floating point number. */ +#if !defined(NDEBUG) && !defined(SQLITE_OMIT_FLOATING_POINT) + /* Verify that integers and floating point values use the same + ** byte order. Or, that if SQLITE_MIXED_ENDIAN_64BIT_FLOAT is + ** defined that 64-bit floating point values really are mixed + ** endian. + */ + static const u64 t1 = ((u64)0x3ff00000)<<32; + static const double r1 = 1.0; + u64 t2 = t1; + swapMixedEndianFloat(t2); + assert( sizeof(r1)==sizeof(t2) && memcmp(&r1, &t2, sizeof(r1))==0 ); +#endif + assert( sizeof(x)==8 && sizeof(pMem->u.r)==8 ); + swapMixedEndianFloat(x); + memcpy(&pMem->u.r, &x, sizeof(x)); + pMem->flags = sqlite3IsNaN(pMem->u.r) ? MEM_Null : MEM_Real; + } + return 8; +} SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( const unsigned char *buf, /* Buffer to deserialize from */ u32 serial_type, /* Serial type to deserialize */ Mem *pMem /* Memory cell to write value into */ ){ - u64 x; - u32 y; - int i; switch( serial_type ){ case 10: /* Reserved for future use */ case 11: /* Reserved for future use */ - case 0: { /* NULL */ + case 0: { /* Null */ + /* EVIDENCE-OF: R-24078-09375 Value is a NULL. */ pMem->flags = MEM_Null; break; } - case 1: { /* 1-byte signed integer */ - pMem->u.i = (signed char)buf[0]; + case 1: { + /* EVIDENCE-OF: R-44885-25196 Value is an 8-bit twos-complement + ** integer. */ + pMem->u.i = ONE_BYTE_INT(buf); pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); return 1; } case 2: { /* 2-byte signed integer */ - i = 256*(signed char)buf[0] | buf[1]; - pMem->u.i = (i64)i; + /* EVIDENCE-OF: R-49794-35026 Value is a big-endian 16-bit + ** twos-complement integer. */ + pMem->u.i = TWO_BYTE_INT(buf); pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); return 2; } case 3: { /* 3-byte signed integer */ - i = 65536*(signed char)buf[0] | (buf[1]<<8) | buf[2]; - pMem->u.i = (i64)i; + /* EVIDENCE-OF: R-37839-54301 Value is a big-endian 24-bit + ** twos-complement integer. */ + pMem->u.i = THREE_BYTE_INT(buf); pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); return 3; } case 4: { /* 4-byte signed integer */ - y = ((unsigned)buf[0]<<24) | (buf[1]<<16) | (buf[2]<<8) | buf[3]; - pMem->u.i = (i64)*(int*)&y; + /* EVIDENCE-OF: R-01849-26079 Value is a big-endian 32-bit + ** twos-complement integer. */ + pMem->u.i = FOUR_BYTE_INT(buf); +#ifdef __HP_cc + /* Work around a sign-extension bug in the HP compiler for HP/UX */ + if( buf[0]&0x80 ) pMem->u.i |= 0xffffffff80000000LL; +#endif pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); return 4; } case 5: { /* 6-byte signed integer */ - x = 256*(signed char)buf[0] + buf[1]; - y = ((unsigned)buf[2]<<24) | (buf[3]<<16) | (buf[4]<<8) | buf[5]; - x = (x<<32) | y; - pMem->u.i = *(i64*)&x; + /* EVIDENCE-OF: R-50385-09674 Value is a big-endian 48-bit + ** twos-complement integer. */ + pMem->u.i = FOUR_BYTE_UINT(buf+2) + (((i64)1)<<32)*TWO_BYTE_INT(buf); pMem->flags = MEM_Int; + testcase( pMem->u.i<0 ); return 6; } case 6: /* 8-byte signed integer */ case 7: { /* IEEE floating point */ -#if !defined(NDEBUG) && !defined(SQLITE_OMIT_FLOATING_POINT) - /* Verify that integers and floating point values use the same - ** byte order. Or, that if SQLITE_MIXED_ENDIAN_64BIT_FLOAT is - ** defined that 64-bit floating point values really are mixed - ** endian. - */ - static const u64 t1 = ((u64)0x3ff00000)<<32; - static const double r1 = 1.0; - u64 t2 = t1; - swapMixedEndianFloat(t2); - assert( sizeof(r1)==sizeof(t2) && memcmp(&r1, &t2, sizeof(r1))==0 ); -#endif - x = ((unsigned)buf[0]<<24) | (buf[1]<<16) | (buf[2]<<8) | buf[3]; - y = ((unsigned)buf[4]<<24) | (buf[5]<<16) | (buf[6]<<8) | buf[7]; - x = (x<<32) | y; - if( serial_type==6 ){ - pMem->u.i = *(i64*)&x; - pMem->flags = MEM_Int; - }else{ - assert( sizeof(x)==8 && sizeof(pMem->r)==8 ); - swapMixedEndianFloat(x); - memcpy(&pMem->r, &x, sizeof(x)); - pMem->flags = sqlite3IsNaN(pMem->r) ? MEM_Null : MEM_Real; - } - return 8; + /* These use local variables, so do them in a separate routine + ** to avoid having to move the frame pointer in the common case */ + return serialGet(buf,serial_type,pMem); } case 8: /* Integer 0 */ case 9: { /* Integer 1 */ + /* EVIDENCE-OF: R-12976-22893 Value is the integer 0. */ + /* EVIDENCE-OF: R-18143-12121 Value is the integer 1. */ pMem->u.i = serial_type-8; pMem->flags = MEM_Int; return 0; } default: { + /* EVIDENCE-OF: R-14606-31564 Value is a BLOB that is (N-12)/2 bytes in + ** length. + ** EVIDENCE-OF: R-28401-00140 Value is a string in the text encoding and + ** (N-13)/2 bytes in length. */ static const u16 aFlag[] = { MEM_Blob|MEM_Ephem, MEM_Str|MEM_Ephem }; - u32 len = (serial_type-12)/2; pMem->z = (char *)buf; - pMem->n = len; - pMem->xDel = 0; + pMem->n = (serial_type-12)/2; pMem->flags = aFlag[serial_type&1]; - return len; + return pMem->n; } } return 0; } - /* ** This routine is used to allocate sufficient space for an UnpackedRecord ** structure large enough to be used with sqlite3VdbeRecordUnpack() if @@ -64370,30 +74689,13 @@ SQLITE_PRIVATE u32 sqlite3VdbeSerialGet( ** If an OOM error occurs, NULL is returned. */ SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord( - KeyInfo *pKeyInfo, /* Description of the record */ - char *pSpace, /* Unaligned space available */ - int szSpace, /* Size of pSpace[] in bytes */ - char **ppFree /* OUT: Caller should free this pointer */ + KeyInfo *pKeyInfo /* Description of the record */ ){ UnpackedRecord *p; /* Unpacked record to return */ - int nOff; /* Increment pSpace by nOff to align it */ int nByte; /* Number of bytes required for *p */ - - /* We want to shift the pointer pSpace up such that it is 8-byte aligned. - ** Thus, we need to calculate a value, nOff, between 0 and 7, to shift - ** it by. If pSpace is already 8-byte aligned, nOff should be zero. - */ - nOff = (8 - (SQLITE_PTR_TO_INT(pSpace) & 7)) & 7; nByte = ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*(pKeyInfo->nField+1); - if( nByte>szSpace+nOff ){ - p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte); - *ppFree = (char *)p; - if( !p ) return 0; - }else{ - p = (UnpackedRecord*)&pSpace[nOff]; - *ppFree = 0; - } - + p = (UnpackedRecord *)sqlite3DbMallocRaw(pKeyInfo->db, nByte); + if( !p ) return 0; p->aMem = (Mem*)&((char*)p)[ROUND8(sizeof(UnpackedRecord))]; assert( pKeyInfo->aSortOrder!=0 ); p->pKeyInfo = pKeyInfo; @@ -64419,47 +74721,44 @@ SQLITE_PRIVATE void sqlite3VdbeRecordUnpack( u32 szHdr; Mem *pMem = p->aMem; - p->flags = 0; + p->default_rc = 0; assert( EIGHT_BYTE_ALIGNMENT(pMem) ); idx = getVarint32(aKey, szHdr); d = szHdr; u = 0; - while( idxnField && d<=nKey ){ + while( idxenc = pKeyInfo->enc; pMem->db = pKeyInfo->db; /* pMem->flags = 0; // sqlite3VdbeSerialGet() will set this for us */ - pMem->zMalloc = 0; + pMem->szMalloc = 0; + pMem->z = 0; d += sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem); pMem++; - u++; + if( (++u)>=p->nField ) break; } assert( u<=pKeyInfo->nField + 1 ); p->nField = u; } +#if SQLITE_DEBUG /* -** This function compares the two table rows or index records -** specified by {nKey1, pKey1} and pPKey2. It returns a negative, zero -** or positive integer if key1 is less than, equal to or -** greater than key2. The {nKey1, pKey1} key must be a blob -** created by th OP_MakeRecord opcode of the VDBE. The pPKey2 -** key must be a parsed key such as obtained from -** sqlite3VdbeParseRecord. +** This function compares two index or table record keys in the same way +** as the sqlite3VdbeRecordCompare() routine. Unlike VdbeRecordCompare(), +** this function deserializes and compares values using the +** sqlite3VdbeSerialGet() and sqlite3MemCompare() functions. It is used +** in assert() statements to ensure that the optimized code in +** sqlite3VdbeRecordCompare() returns results with these two primitives. ** -** Key1 and Key2 do not have to contain the same number of fields. -** The key with fewer fields is usually compares less than the -** longer key. However if the UNPACKED_INCRKEY flags in pPKey2 is set -** and the common prefixes are equal, then key1 is less than key2. -** Or if the UNPACKED_MATCH_PREFIX flag is set and the prefixes are -** equal, then the keys are considered to be equal and -** the parts beyond the common prefix are ignored. +** Return true if the result of comparison is equivalent to desiredResult. +** Return false if there is a disagreement. */ -SQLITE_PRIVATE int sqlite3VdbeRecordCompare( +static int vdbeRecordCompareDebug( int nKey1, const void *pKey1, /* Left key */ - UnpackedRecord *pPKey2 /* Right key */ + const UnpackedRecord *pPKey2, /* Right key */ + int desiredResult /* Correct answer */ ){ u32 d1; /* Offset into aKey[] of next data element */ u32 idx1; /* Offset into aKey[] of next header element */ @@ -64471,10 +74770,11 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare( Mem mem1; pKeyInfo = pPKey2->pKeyInfo; + if( pKeyInfo->db==0 ) return 1; mem1.enc = pKeyInfo->enc; mem1.db = pKeyInfo->db; /* mem1.flags = 0; // Will be initialized by sqlite3VdbeSerialGet() */ - VVA_ONLY( mem1.zMalloc = 0; ) /* Only needed by assert() statements */ + VVA_ONLY( mem1.szMalloc = 0; ) /* Only needed by assert() statements */ /* Compilers may complain that mem1.u.i is potentially uninitialized. ** We could initialize it, as shown here, to silence those complaints. @@ -64486,6 +74786,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare( /* mem1.u.i = 0; // not needed, here to silence compiler warning */ idx1 = getVarint32(aKey1, szHdr1); + if( szHdr1>98307 ) return SQLITE_CORRUPT; d1 = szHdr1; assert( pKeyInfo->nField+pKeyInfo->nXField>=pPKey2->nField || CORRUPT_DB ); assert( pKeyInfo->aSortOrder!=0 ); @@ -64517,11 +74818,11 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare( */ rc = sqlite3MemCompare(&mem1, &pPKey2->aMem[i], pKeyInfo->aColl[i]); if( rc!=0 ){ - assert( mem1.zMalloc==0 ); /* See comment below */ + assert( mem1.szMalloc==0 ); /* See comment below */ if( pKeyInfo->aSortOrder[i] ){ rc = -rc; /* Invert the result for DESC sort order. */ } - return rc; + goto debugCompareEnd; } i++; }while( idx1nField ); @@ -64530,27 +74831,716 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompare( ** the following assert(). If the assert() fails, it indicates a ** memory leak and a need to call sqlite3VdbeMemRelease(&mem1). */ - assert( mem1.zMalloc==0 ); + assert( mem1.szMalloc==0 ); /* rc==0 here means that one of the keys ran out of fields and - ** all the fields up to that point were equal. If the UNPACKED_INCRKEY - ** flag is set, then break the tie by treating key2 as larger. - ** If the UPACKED_PREFIX_MATCH flag is set, then keys with common prefixes - ** are considered to be equal. Otherwise, the longer key is the - ** larger. As it happens, the pPKey2 will always be the longer - ** if there is a difference. - */ - assert( rc==0 ); - if( pPKey2->flags & UNPACKED_INCRKEY ){ - rc = -1; - }else if( pPKey2->flags & UNPACKED_PREFIX_MATCH ){ - /* Leave rc==0 */ - }else if( idx1default_rc; + +debugCompareEnd: + if( desiredResult==0 && rc==0 ) return 1; + if( desiredResult<0 && rc<0 ) return 1; + if( desiredResult>0 && rc>0 ) return 1; + if( CORRUPT_DB ) return 1; + if( pKeyInfo->db->mallocFailed ) return 1; + return 0; } +#endif + +#if SQLITE_DEBUG +/* +** Count the number of fields (a.k.a. columns) in the record given by +** pKey,nKey. The verify that this count is less than or equal to the +** limit given by pKeyInfo->nField + pKeyInfo->nXField. +** +** If this constraint is not satisfied, it means that the high-speed +** vdbeRecordCompareInt() and vdbeRecordCompareString() routines will +** not work correctly. If this assert() ever fires, it probably means +** that the KeyInfo.nField or KeyInfo.nXField values were computed +** incorrectly. +*/ +static void vdbeAssertFieldCountWithinLimits( + int nKey, const void *pKey, /* The record to verify */ + const KeyInfo *pKeyInfo /* Compare size with this KeyInfo */ +){ + int nField = 0; + u32 szHdr; + u32 idx; + u32 notUsed; + const unsigned char *aKey = (const unsigned char*)pKey; + + if( CORRUPT_DB ) return; + idx = getVarint32(aKey, szHdr); + assert( nKey>=0 ); + assert( szHdr<=(u32)nKey ); + while( idxnField+pKeyInfo->nXField ); +} +#else +# define vdbeAssertFieldCountWithinLimits(A,B,C) +#endif + +/* +** Both *pMem1 and *pMem2 contain string values. Compare the two values +** using the collation sequence pColl. As usual, return a negative , zero +** or positive value if *pMem1 is less than, equal to or greater than +** *pMem2, respectively. Similar in spirit to "rc = (*pMem1) - (*pMem2);". +*/ +static int vdbeCompareMemString( + const Mem *pMem1, + const Mem *pMem2, + const CollSeq *pColl, + u8 *prcErr /* If an OOM occurs, set to SQLITE_NOMEM */ +){ + if( pMem1->enc==pColl->enc ){ + /* The strings are already in the correct encoding. Call the + ** comparison function directly */ + return pColl->xCmp(pColl->pUser,pMem1->n,pMem1->z,pMem2->n,pMem2->z); + }else{ + int rc; + const void *v1, *v2; + int n1, n2; + Mem c1; + Mem c2; + sqlite3VdbeMemInit(&c1, pMem1->db, MEM_Null); + sqlite3VdbeMemInit(&c2, pMem1->db, MEM_Null); + sqlite3VdbeMemShallowCopy(&c1, pMem1, MEM_Ephem); + sqlite3VdbeMemShallowCopy(&c2, pMem2, MEM_Ephem); + v1 = sqlite3ValueText((sqlite3_value*)&c1, pColl->enc); + n1 = v1==0 ? 0 : c1.n; + v2 = sqlite3ValueText((sqlite3_value*)&c2, pColl->enc); + n2 = v2==0 ? 0 : c2.n; + rc = pColl->xCmp(pColl->pUser, n1, v1, n2, v2); + if( (v1==0 || v2==0) && prcErr ) *prcErr = SQLITE_NOMEM_BKPT; + sqlite3VdbeMemRelease(&c1); + sqlite3VdbeMemRelease(&c2); + return rc; + } +} + +/* +** The input pBlob is guaranteed to be a Blob that is not marked +** with MEM_Zero. Return true if it could be a zero-blob. +*/ +static int isAllZero(const char *z, int n){ + int i; + for(i=0; in; + int n2 = pB2->n; + + /* It is possible to have a Blob value that has some non-zero content + ** followed by zero content. But that only comes up for Blobs formed + ** by the OP_MakeRecord opcode, and such Blobs never get passed into + ** sqlite3MemCompare(). */ + assert( (pB1->flags & MEM_Zero)==0 || n1==0 ); + assert( (pB2->flags & MEM_Zero)==0 || n2==0 ); + + if( (pB1->flags|pB2->flags) & MEM_Zero ){ + if( pB1->flags & pB2->flags & MEM_Zero ){ + return pB1->u.nZero - pB2->u.nZero; + }else if( pB1->flags & MEM_Zero ){ + if( !isAllZero(pB2->z, pB2->n) ) return -1; + return pB1->u.nZero - n2; + }else{ + if( !isAllZero(pB1->z, pB1->n) ) return +1; + return n1 - pB2->u.nZero; + } + } + c = memcmp(pB1->z, pB2->z, n1>n2 ? n2 : n1); + if( c ) return c; + return n1 - n2; +} + +/* +** Do a comparison between a 64-bit signed integer and a 64-bit floating-point +** number. Return negative, zero, or positive if the first (i64) is less than, +** equal to, or greater than the second (double). +*/ +static int sqlite3IntFloatCompare(i64 i, double r){ + if( sizeof(LONGDOUBLE_TYPE)>8 ){ + LONGDOUBLE_TYPE x = (LONGDOUBLE_TYPE)i; + if( xr ) return +1; + return 0; + }else{ + i64 y; + double s; + if( r<-9223372036854775808.0 ) return +1; + if( r>9223372036854775807.0 ) return -1; + y = (i64)r; + if( iy ){ + if( y==SMALLEST_INT64 && r>0.0 ) return -1; + return +1; + } + s = (double)i; + if( sr ) return +1; + return 0; + } +} + +/* +** Compare the values contained by the two memory cells, returning +** negative, zero or positive if pMem1 is less than, equal to, or greater +** than pMem2. Sorting order is NULL's first, followed by numbers (integers +** and reals) sorted numerically, followed by text ordered by the collating +** sequence pColl and finally blob's ordered by memcmp(). +** +** Two NULL values are considered equal by this function. +*/ +SQLITE_PRIVATE int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const CollSeq *pColl){ + int f1, f2; + int combined_flags; + + f1 = pMem1->flags; + f2 = pMem2->flags; + combined_flags = f1|f2; + assert( (combined_flags & MEM_RowSet)==0 ); + /* If one value is NULL, it is less than the other. If both values + ** are NULL, return 0. + */ + if( combined_flags&MEM_Null ){ + return (f2&MEM_Null) - (f1&MEM_Null); + } + + /* At least one of the two values is a number + */ + if( combined_flags&(MEM_Int|MEM_Real) ){ + if( (f1 & f2 & MEM_Int)!=0 ){ + if( pMem1->u.i < pMem2->u.i ) return -1; + if( pMem1->u.i > pMem2->u.i ) return +1; + return 0; + } + if( (f1 & f2 & MEM_Real)!=0 ){ + if( pMem1->u.r < pMem2->u.r ) return -1; + if( pMem1->u.r > pMem2->u.r ) return +1; + return 0; + } + if( (f1&MEM_Int)!=0 ){ + if( (f2&MEM_Real)!=0 ){ + return sqlite3IntFloatCompare(pMem1->u.i, pMem2->u.r); + }else{ + return -1; + } + } + if( (f1&MEM_Real)!=0 ){ + if( (f2&MEM_Int)!=0 ){ + return -sqlite3IntFloatCompare(pMem2->u.i, pMem1->u.r); + }else{ + return -1; + } + } + return +1; + } + + /* If one value is a string and the other is a blob, the string is less. + ** If both are strings, compare using the collating functions. + */ + if( combined_flags&MEM_Str ){ + if( (f1 & MEM_Str)==0 ){ + return 1; + } + if( (f2 & MEM_Str)==0 ){ + return -1; + } + + assert( pMem1->enc==pMem2->enc || pMem1->db->mallocFailed ); + assert( pMem1->enc==SQLITE_UTF8 || + pMem1->enc==SQLITE_UTF16LE || pMem1->enc==SQLITE_UTF16BE ); + + /* The collation sequence must be defined at this point, even if + ** the user deletes the collation sequence after the vdbe program is + ** compiled (this was not always the case). + */ + assert( !pColl || pColl->xCmp ); + + if( pColl ){ + return vdbeCompareMemString(pMem1, pMem2, pColl, 0); + } + /* If a NULL pointer was passed as the collate function, fall through + ** to the blob case and use memcmp(). */ + } + + /* Both values must be blobs. Compare using memcmp(). */ + return sqlite3BlobCompare(pMem1, pMem2); +} + + +/* +** The first argument passed to this function is a serial-type that +** corresponds to an integer - all values between 1 and 9 inclusive +** except 7. The second points to a buffer containing an integer value +** serialized according to serial_type. This function deserializes +** and returns the value. +*/ +static i64 vdbeRecordDecodeInt(u32 serial_type, const u8 *aKey){ + u32 y; + assert( CORRUPT_DB || (serial_type>=1 && serial_type<=9 && serial_type!=7) ); + switch( serial_type ){ + case 0: + case 1: + testcase( aKey[0]&0x80 ); + return ONE_BYTE_INT(aKey); + case 2: + testcase( aKey[0]&0x80 ); + return TWO_BYTE_INT(aKey); + case 3: + testcase( aKey[0]&0x80 ); + return THREE_BYTE_INT(aKey); + case 4: { + testcase( aKey[0]&0x80 ); + y = FOUR_BYTE_UINT(aKey); + return (i64)*(int*)&y; + } + case 5: { + testcase( aKey[0]&0x80 ); + return FOUR_BYTE_UINT(aKey+2) + (((i64)1)<<32)*TWO_BYTE_INT(aKey); + } + case 6: { + u64 x = FOUR_BYTE_UINT(aKey); + testcase( aKey[0]&0x80 ); + x = (x<<32) | FOUR_BYTE_UINT(aKey+4); + return (i64)*(i64*)&x; + } + } + + return (serial_type - 8); +} + +/* +** This function compares the two table rows or index records +** specified by {nKey1, pKey1} and pPKey2. It returns a negative, zero +** or positive integer if key1 is less than, equal to or +** greater than key2. The {nKey1, pKey1} key must be a blob +** created by the OP_MakeRecord opcode of the VDBE. The pPKey2 +** key must be a parsed key such as obtained from +** sqlite3VdbeParseRecord. +** +** If argument bSkip is non-zero, it is assumed that the caller has already +** determined that the first fields of the keys are equal. +** +** Key1 and Key2 do not have to contain the same number of fields. If all +** fields that appear in both keys are equal, then pPKey2->default_rc is +** returned. +** +** If database corruption is discovered, set pPKey2->errCode to +** SQLITE_CORRUPT and return 0. If an OOM error is encountered, +** pPKey2->errCode is set to SQLITE_NOMEM and, if it is not NULL, the +** malloc-failed flag set on database handle (pPKey2->pKeyInfo->db). +*/ +SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip( + int nKey1, const void *pKey1, /* Left key */ + UnpackedRecord *pPKey2, /* Right key */ + int bSkip /* If true, skip the first field */ +){ + u32 d1; /* Offset into aKey[] of next data element */ + int i; /* Index of next field to compare */ + u32 szHdr1; /* Size of record header in bytes */ + u32 idx1; /* Offset of first type in header */ + int rc = 0; /* Return value */ + Mem *pRhs = pPKey2->aMem; /* Next field of pPKey2 to compare */ + KeyInfo *pKeyInfo = pPKey2->pKeyInfo; + const unsigned char *aKey1 = (const unsigned char *)pKey1; + Mem mem1; + + /* If bSkip is true, then the caller has already determined that the first + ** two elements in the keys are equal. Fix the various stack variables so + ** that this routine begins comparing at the second field. */ + if( bSkip ){ + u32 s1; + idx1 = 1 + getVarint32(&aKey1[1], s1); + szHdr1 = aKey1[0]; + d1 = szHdr1 + sqlite3VdbeSerialTypeLen(s1); + i = 1; + pRhs++; + }else{ + idx1 = getVarint32(aKey1, szHdr1); + d1 = szHdr1; + if( d1>(unsigned)nKey1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corruption */ + } + i = 0; + } + + VVA_ONLY( mem1.szMalloc = 0; ) /* Only needed by assert() statements */ + assert( pPKey2->pKeyInfo->nField+pPKey2->pKeyInfo->nXField>=pPKey2->nField + || CORRUPT_DB ); + assert( pPKey2->pKeyInfo->aSortOrder!=0 ); + assert( pPKey2->pKeyInfo->nField>0 ); + assert( idx1<=szHdr1 || CORRUPT_DB ); + do{ + u32 serial_type; + + /* RHS is an integer */ + if( pRhs->flags & MEM_Int ){ + serial_type = aKey1[idx1]; + testcase( serial_type==12 ); + if( serial_type>=10 ){ + rc = +1; + }else if( serial_type==0 ){ + rc = -1; + }else if( serial_type==7 ){ + sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1); + rc = -sqlite3IntFloatCompare(pRhs->u.i, mem1.u.r); + }else{ + i64 lhs = vdbeRecordDecodeInt(serial_type, &aKey1[d1]); + i64 rhs = pRhs->u.i; + if( lhsrhs ){ + rc = +1; + } + } + } + + /* RHS is real */ + else if( pRhs->flags & MEM_Real ){ + serial_type = aKey1[idx1]; + if( serial_type>=10 ){ + /* Serial types 12 or greater are strings and blobs (greater than + ** numbers). Types 10 and 11 are currently "reserved for future + ** use", so it doesn't really matter what the results of comparing + ** them to numberic values are. */ + rc = +1; + }else if( serial_type==0 ){ + rc = -1; + }else{ + sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1); + if( serial_type==7 ){ + if( mem1.u.ru.r ){ + rc = -1; + }else if( mem1.u.r>pRhs->u.r ){ + rc = +1; + } + }else{ + rc = sqlite3IntFloatCompare(mem1.u.i, pRhs->u.r); + } + } + } + + /* RHS is a string */ + else if( pRhs->flags & MEM_Str ){ + getVarint32(&aKey1[idx1], serial_type); + testcase( serial_type==12 ); + if( serial_type<12 ){ + rc = -1; + }else if( !(serial_type & 0x01) ){ + rc = +1; + }else{ + mem1.n = (serial_type - 12) / 2; + testcase( (d1+mem1.n)==(unsigned)nKey1 ); + testcase( (d1+mem1.n+1)==(unsigned)nKey1 ); + if( (d1+mem1.n) > (unsigned)nKey1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corruption */ + }else if( pKeyInfo->aColl[i] ){ + mem1.enc = pKeyInfo->enc; + mem1.db = pKeyInfo->db; + mem1.flags = MEM_Str; + mem1.z = (char*)&aKey1[d1]; + rc = vdbeCompareMemString( + &mem1, pRhs, pKeyInfo->aColl[i], &pPKey2->errCode + ); + }else{ + int nCmp = MIN(mem1.n, pRhs->n); + rc = memcmp(&aKey1[d1], pRhs->z, nCmp); + if( rc==0 ) rc = mem1.n - pRhs->n; + } + } + } + + /* RHS is a blob */ + else if( pRhs->flags & MEM_Blob ){ + assert( (pRhs->flags & MEM_Zero)==0 || pRhs->n==0 ); + getVarint32(&aKey1[idx1], serial_type); + testcase( serial_type==12 ); + if( serial_type<12 || (serial_type & 0x01) ){ + rc = -1; + }else{ + int nStr = (serial_type - 12) / 2; + testcase( (d1+nStr)==(unsigned)nKey1 ); + testcase( (d1+nStr+1)==(unsigned)nKey1 ); + if( (d1+nStr) > (unsigned)nKey1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corruption */ + }else if( pRhs->flags & MEM_Zero ){ + if( !isAllZero((const char*)&aKey1[d1],nStr) ){ + rc = 1; + }else{ + rc = nStr - pRhs->u.nZero; + } + }else{ + int nCmp = MIN(nStr, pRhs->n); + rc = memcmp(&aKey1[d1], pRhs->z, nCmp); + if( rc==0 ) rc = nStr - pRhs->n; + } + } + } + + /* RHS is null */ + else{ + serial_type = aKey1[idx1]; + rc = (serial_type!=0); + } + + if( rc!=0 ){ + if( pKeyInfo->aSortOrder[i] ){ + rc = -rc; + } + assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, rc) ); + assert( mem1.szMalloc==0 ); /* See comment below */ + return rc; + } + + i++; + pRhs++; + d1 += sqlite3VdbeSerialTypeLen(serial_type); + idx1 += sqlite3VarintLen(serial_type); + }while( idx1<(unsigned)szHdr1 && inField && d1<=(unsigned)nKey1 ); + + /* No memory allocation is ever used on mem1. Prove this using + ** the following assert(). If the assert() fails, it indicates a + ** memory leak and a need to call sqlite3VdbeMemRelease(&mem1). */ + assert( mem1.szMalloc==0 ); + + /* rc==0 here means that one or both of the keys ran out of fields and + ** all the fields up to that point were equal. Return the default_rc + ** value. */ + assert( CORRUPT_DB + || vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, pPKey2->default_rc) + || pKeyInfo->db->mallocFailed + ); + pPKey2->eqSeen = 1; + return pPKey2->default_rc; +} +SQLITE_PRIVATE int sqlite3VdbeRecordCompare( + int nKey1, const void *pKey1, /* Left key */ + UnpackedRecord *pPKey2 /* Right key */ +){ + return sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 0); +} + + +/* +** This function is an optimized version of sqlite3VdbeRecordCompare() +** that (a) the first field of pPKey2 is an integer, and (b) the +** size-of-header varint at the start of (pKey1/nKey1) fits in a single +** byte (i.e. is less than 128). +** +** To avoid concerns about buffer overreads, this routine is only used +** on schemas where the maximum valid header size is 63 bytes or less. +*/ +static int vdbeRecordCompareInt( + int nKey1, const void *pKey1, /* Left key */ + UnpackedRecord *pPKey2 /* Right key */ +){ + const u8 *aKey = &((const u8*)pKey1)[*(const u8*)pKey1 & 0x3F]; + int serial_type = ((const u8*)pKey1)[1]; + int res; + u32 y; + u64 x; + i64 v; + i64 lhs; + + vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo); + assert( (*(u8*)pKey1)<=0x3F || CORRUPT_DB ); + switch( serial_type ){ + case 1: { /* 1-byte signed integer */ + lhs = ONE_BYTE_INT(aKey); + testcase( lhs<0 ); + break; + } + case 2: { /* 2-byte signed integer */ + lhs = TWO_BYTE_INT(aKey); + testcase( lhs<0 ); + break; + } + case 3: { /* 3-byte signed integer */ + lhs = THREE_BYTE_INT(aKey); + testcase( lhs<0 ); + break; + } + case 4: { /* 4-byte signed integer */ + y = FOUR_BYTE_UINT(aKey); + lhs = (i64)*(int*)&y; + testcase( lhs<0 ); + break; + } + case 5: { /* 6-byte signed integer */ + lhs = FOUR_BYTE_UINT(aKey+2) + (((i64)1)<<32)*TWO_BYTE_INT(aKey); + testcase( lhs<0 ); + break; + } + case 6: { /* 8-byte signed integer */ + x = FOUR_BYTE_UINT(aKey); + x = (x<<32) | FOUR_BYTE_UINT(aKey+4); + lhs = *(i64*)&x; + testcase( lhs<0 ); + break; + } + case 8: + lhs = 0; + break; + case 9: + lhs = 1; + break; + + /* This case could be removed without changing the results of running + ** this code. Including it causes gcc to generate a faster switch + ** statement (since the range of switch targets now starts at zero and + ** is contiguous) but does not cause any duplicate code to be generated + ** (as gcc is clever enough to combine the two like cases). Other + ** compilers might be similar. */ + case 0: case 7: + return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2); + + default: + return sqlite3VdbeRecordCompare(nKey1, pKey1, pPKey2); + } + + v = pPKey2->aMem[0].u.i; + if( v>lhs ){ + res = pPKey2->r1; + }else if( vr2; + }else if( pPKey2->nField>1 ){ + /* The first fields of the two keys are equal. Compare the trailing + ** fields. */ + res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1); + }else{ + /* The first fields of the two keys are equal and there are no trailing + ** fields. Return pPKey2->default_rc in this case. */ + res = pPKey2->default_rc; + pPKey2->eqSeen = 1; + } + + assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, res) ); + return res; +} + +/* +** This function is an optimized version of sqlite3VdbeRecordCompare() +** that (a) the first field of pPKey2 is a string, that (b) the first field +** uses the collation sequence BINARY and (c) that the size-of-header varint +** at the start of (pKey1/nKey1) fits in a single byte. +*/ +static int vdbeRecordCompareString( + int nKey1, const void *pKey1, /* Left key */ + UnpackedRecord *pPKey2 /* Right key */ +){ + const u8 *aKey1 = (const u8*)pKey1; + int serial_type; + int res; + + assert( pPKey2->aMem[0].flags & MEM_Str ); + vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo); + getVarint32(&aKey1[1], serial_type); + if( serial_type<12 ){ + res = pPKey2->r1; /* (pKey1/nKey1) is a number or a null */ + }else if( !(serial_type & 0x01) ){ + res = pPKey2->r2; /* (pKey1/nKey1) is a blob */ + }else{ + int nCmp; + int nStr; + int szHdr = aKey1[0]; + + nStr = (serial_type-12) / 2; + if( (szHdr + nStr) > nKey1 ){ + pPKey2->errCode = (u8)SQLITE_CORRUPT_BKPT; + return 0; /* Corruption */ + } + nCmp = MIN( pPKey2->aMem[0].n, nStr ); + res = memcmp(&aKey1[szHdr], pPKey2->aMem[0].z, nCmp); + + if( res==0 ){ + res = nStr - pPKey2->aMem[0].n; + if( res==0 ){ + if( pPKey2->nField>1 ){ + res = sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, pPKey2, 1); + }else{ + res = pPKey2->default_rc; + pPKey2->eqSeen = 1; + } + }else if( res>0 ){ + res = pPKey2->r2; + }else{ + res = pPKey2->r1; + } + }else if( res>0 ){ + res = pPKey2->r2; + }else{ + res = pPKey2->r1; + } + } + + assert( vdbeRecordCompareDebug(nKey1, pKey1, pPKey2, res) + || CORRUPT_DB + || pPKey2->pKeyInfo->db->mallocFailed + ); + return res; +} + +/* +** Return a pointer to an sqlite3VdbeRecordCompare() compatible function +** suitable for comparing serialized records to the unpacked record passed +** as the only argument. +*/ +SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord *p){ + /* varintRecordCompareInt() and varintRecordCompareString() both assume + ** that the size-of-header varint that occurs at the start of each record + ** fits in a single byte (i.e. is 127 or less). varintRecordCompareInt() + ** also assumes that it is safe to overread a buffer by at least the + ** maximum possible legal header size plus 8 bytes. Because there is + ** guaranteed to be at least 74 (but not 136) bytes of padding following each + ** buffer passed to varintRecordCompareInt() this makes it convenient to + ** limit the size of the header to 64 bytes in cases where the first field + ** is an integer. + ** + ** The easiest way to enforce this limit is to consider only records with + ** 13 fields or less. If the first field is an integer, the maximum legal + ** header size is (12*5 + 1 + 1) bytes. */ + if( (p->pKeyInfo->nField + p->pKeyInfo->nXField)<=13 ){ + int flags = p->aMem[0].flags; + if( p->pKeyInfo->aSortOrder[0] ){ + p->r1 = 1; + p->r2 = -1; + }else{ + p->r1 = -1; + p->r2 = 1; + } + if( (flags & MEM_Int) ){ + return vdbeRecordCompareInt; + } + testcase( flags & MEM_Real ); + testcase( flags & MEM_Null ); + testcase( flags & MEM_Blob ); + if( (flags & (MEM_Real|MEM_Null|MEM_Blob))==0 && p->pKeyInfo->aColl[0]==0 ){ + assert( flags & MEM_Str ); + return vdbeRecordCompareString; + } + } + + return sqlite3VdbeRecordCompare; +} /* ** pCur points at an index entry created using the OP_MakeRecord opcode. @@ -64568,21 +75558,18 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){ u32 lenRowid; /* Size of the rowid */ Mem m, v; - UNUSED_PARAMETER(db); - /* Get the size of the index entry. Only indices entries of less ** than 2GiB are support - anything large must be database corruption. ** Any corruption is detected in sqlite3BtreeParseCellPtr(), though, so ** this code can safely assume that nCellKey is 32-bits */ assert( sqlite3BtreeCursorIsValid(pCur) ); - VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey); - assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */ + nCellKey = sqlite3BtreePayloadSize(pCur); assert( (nCellKey & SQLITE_MAX_U32)==(u64)nCellKey ); /* Read in the complete content of the index entry */ - memset(&m, 0, sizeof(m)); - rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, 1, &m); + sqlite3VdbeMemInit(&m, db, 0); + rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m); if( rc ){ return rc; } @@ -64609,7 +75596,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){ if( unlikely(typeRowid<1 || typeRowid>9 || typeRowid==7) ){ goto idx_rowid_corruption; } - lenRowid = sqlite3VdbeSerialTypeLen(typeRowid); + lenRowid = sqlite3SmallTypeSizes[typeRowid]; testcase( (u32)m.n==szHdr+lenRowid ); if( unlikely((u32)m.npCursor; + BtCursor *pCur; Mem m; + assert( pC->eCurType==CURTYPE_BTREE ); + pCur = pC->uc.pCursor; assert( sqlite3BtreeCursorIsValid(pCur) ); - VVA_ONLY(rc =) sqlite3BtreeKeySize(pCur, &nCellKey); - assert( rc==SQLITE_OK ); /* pCur is always valid so KeySize cannot fail */ - /* nCellKey will always be between 0 and 0xffffffff because of the say + nCellKey = sqlite3BtreePayloadSize(pCur); + /* nCellKey will always be between 0 and 0xffffffff because of the way ** that btreeParseCellPtr() and sqlite3GetVarint32() are implemented */ if( nCellKey<=0 || nCellKey>0x7fffffff ){ *res = 0; return SQLITE_CORRUPT_BKPT; } - memset(&m, 0, sizeof(m)); - rc = sqlite3VdbeMemFromBtree(pC->pCursor, 0, (u32)nCellKey, 1, &m); + sqlite3VdbeMemInit(&m, db, 0); + rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m); if( rc ){ return rc; } - assert( pUnpacked->flags & UNPACKED_PREFIX_MATCH ); *res = sqlite3VdbeRecordCompare(m.n, m.z, pUnpacked); sqlite3VdbeMemRelease(&m); return SQLITE_OK; @@ -64729,7 +75717,6 @@ SQLITE_PRIVATE sqlite3_value *sqlite3VdbeGetBoundValue(Vdbe *v, int iVar, u8 aff if( pRet ){ sqlite3VdbeMemCopy((Mem *)pRet, pMem); sqlite3ValueApplyAffinity(pRet, aff, SQLITE_UTF8); - sqlite3VdbeMemStoreType((Mem *)pRet); } return pRet; } @@ -64758,14 +75745,105 @@ SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe *v, int iVar){ ** in memory obtained from sqlite3DbMalloc). */ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe *p, sqlite3_vtab *pVtab){ - sqlite3 *db = p->db; - sqlite3DbFree(db, p->zErrMsg); - p->zErrMsg = sqlite3DbStrDup(db, pVtab->zErrMsg); - sqlite3_free(pVtab->zErrMsg); - pVtab->zErrMsg = 0; + if( pVtab->zErrMsg ){ + sqlite3 *db = p->db; + sqlite3DbFree(db, p->zErrMsg); + p->zErrMsg = sqlite3DbStrDup(db, pVtab->zErrMsg); + sqlite3_free(pVtab->zErrMsg); + pVtab->zErrMsg = 0; + } } #endif /* SQLITE_OMIT_VIRTUALTABLE */ +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + +/* +** If the second argument is not NULL, release any allocations associated +** with the memory cells in the p->aMem[] array. Also free the UnpackedRecord +** structure itself, using sqlite3DbFree(). +** +** This function is used to free UnpackedRecord structures allocated by +** the vdbeUnpackRecord() function found in vdbeapi.c. +*/ +static void vdbeFreeUnpacked(sqlite3 *db, int nField, UnpackedRecord *p){ + if( p ){ + int i; + for(i=0; iaMem[i]; + if( pMem->zMalloc ) sqlite3VdbeMemRelease(pMem); + } + sqlite3DbFree(db, p); + } +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** Invoke the pre-update hook. If this is an UPDATE or DELETE pre-update call, +** then cursor passed as the second argument should point to the row about +** to be update or deleted. If the application calls sqlite3_preupdate_old(), +** the required value will be read from the row the cursor points to. +*/ +SQLITE_PRIVATE void sqlite3VdbePreUpdateHook( + Vdbe *v, /* Vdbe pre-update hook is invoked by */ + VdbeCursor *pCsr, /* Cursor to grab old.* values from */ + int op, /* SQLITE_INSERT, UPDATE or DELETE */ + const char *zDb, /* Database name */ + Table *pTab, /* Modified table */ + i64 iKey1, /* Initial key value */ + int iReg /* Register for new.* record */ +){ + sqlite3 *db = v->db; + i64 iKey2; + PreUpdate preupdate; + const char *zTbl = pTab->zName; + static const u8 fakeSortOrder = 0; + + assert( db->pPreUpdate==0 ); + memset(&preupdate, 0, sizeof(PreUpdate)); + if( HasRowid(pTab)==0 ){ + iKey1 = iKey2 = 0; + preupdate.pPk = sqlite3PrimaryKeyIndex(pTab); + }else{ + if( op==SQLITE_UPDATE ){ + iKey2 = v->aMem[iReg].u.i; + }else{ + iKey2 = iKey1; + } + } + + assert( pCsr->nField==pTab->nCol + || (pCsr->nField==pTab->nCol+1 && op==SQLITE_DELETE && iReg==-1) + ); + + preupdate.v = v; + preupdate.pCsr = pCsr; + preupdate.op = op; + preupdate.iNewReg = iReg; + preupdate.keyinfo.db = db; + preupdate.keyinfo.enc = ENC(db); + preupdate.keyinfo.nField = pTab->nCol; + preupdate.keyinfo.aSortOrder = (u8*)&fakeSortOrder; + preupdate.iKey1 = iKey1; + preupdate.iKey2 = iKey2; + preupdate.pTab = pTab; + + db->pPreUpdate = &preupdate; + db->xPreUpdateCallback(db->pPreUpdateArg, db, op, zDb, zTbl, iKey1, iKey2); + db->pPreUpdate = 0; + sqlite3DbFree(db, preupdate.aRecord); + vdbeFreeUnpacked(db, preupdate.keyinfo.nField+1, preupdate.pUnpacked); + vdbeFreeUnpacked(db, preupdate.keyinfo.nField+1, preupdate.pNewUnpacked); + if( preupdate.aNew ){ + int i; + for(i=0; inField; i++){ + sqlite3VdbeMemRelease(&preupdate.aNew[i]); + } + sqlite3DbFree(db, preupdate.aNew); + } +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + /************** End of vdbeaux.c *********************************************/ /************** Begin file vdbeapi.c *****************************************/ /* @@ -64783,6 +75861,8 @@ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe *p, sqlite3_vtab *pVtab){ ** This file contains code use to implement APIs that are part of the ** VDBE. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ #ifndef SQLITE_OMIT_DEPRECATED /* @@ -64821,6 +75901,38 @@ static int vdbeSafetyNotNull(Vdbe *p){ } } +#ifndef SQLITE_OMIT_TRACE +/* +** Invoke the profile callback. This routine is only called if we already +** know that the profile callback is defined and needs to be invoked. +*/ +static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){ + sqlite3_int64 iNow; + sqlite3_int64 iElapse; + assert( p->startTime>0 ); + assert( db->xProfile!=0 || (db->mTrace & SQLITE_TRACE_PROFILE)!=0 ); + assert( db->init.busy==0 ); + assert( p->zSql!=0 ); + sqlite3OsCurrentTimeInt64(db->pVfs, &iNow); + iElapse = (iNow - p->startTime)*1000000; + if( db->xProfile ){ + db->xProfile(db->pProfileArg, p->zSql, iElapse); + } + if( db->mTrace & SQLITE_TRACE_PROFILE ){ + db->xTrace(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse); + } + p->startTime = 0; +} +/* +** The checkProfileCallback(DB,P) macro checks to see if a profile callback +** is needed, and it invokes the callback if it is needed. +*/ +# define checkProfileCallback(DB,P) \ + if( ((P)->startTime)>0 ){ invokeProfileCallback(DB,P); } +#else +# define checkProfileCallback(DB,P) /*no-op*/ +#endif + /* ** The following routine destroys a virtual machine that is created by ** the sqlite3_compile() routine. The integer returned is an SQLITE_ @@ -64841,6 +75953,7 @@ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt){ sqlite3 *db = v->db; if( vdbeSafety(v) ) return SQLITE_MISUSE_BKPT; sqlite3_mutex_enter(db->mutex); + checkProfileCallback(db, v); rc = sqlite3VdbeFinalize(v); rc = sqlite3ApiExit(db, rc); sqlite3LeaveMutexAndCloseZombie(db); @@ -64862,12 +75975,14 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt){ rc = SQLITE_OK; }else{ Vdbe *v = (Vdbe*)pStmt; - sqlite3_mutex_enter(v->db->mutex); + sqlite3 *db = v->db; + sqlite3_mutex_enter(db->mutex); + checkProfileCallback(db, v); rc = sqlite3VdbeReset(v); sqlite3VdbeRewind(v); - assert( (rc & (v->db->errMask))==rc ); - rc = sqlite3ApiExit(v->db, rc); - sqlite3_mutex_leave(v->db->mutex); + assert( (rc & (db->errMask))==rc ); + rc = sqlite3ApiExit(db, rc); + sqlite3_mutex_leave(db->mutex); } return rc; } @@ -64902,8 +76017,10 @@ SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt *pStmt){ SQLITE_API const void *sqlite3_value_blob(sqlite3_value *pVal){ Mem *p = (Mem*)pVal; if( p->flags & (MEM_Blob|MEM_Str) ){ - sqlite3VdbeMemExpandBlob(p); - p->flags &= ~MEM_Str; + if( ExpandBlob(p)!=SQLITE_OK ){ + assert( p->flags==MEM_Null && p->z==0 ); + return 0; + } p->flags |= MEM_Blob; return p->n ? p->z : 0; }else{ @@ -64925,6 +76042,10 @@ SQLITE_API int sqlite3_value_int(sqlite3_value *pVal){ SQLITE_API sqlite_int64 sqlite3_value_int64(sqlite3_value *pVal){ return sqlite3VdbeIntValue((Mem*)pVal); } +SQLITE_API unsigned int sqlite3_value_subtype(sqlite3_value *pVal){ + Mem *pMem = (Mem*)pVal; + return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0); +} SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value *pVal){ return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8); } @@ -64939,17 +76060,88 @@ SQLITE_API const void *sqlite3_value_text16le(sqlite3_value *pVal){ return sqlite3ValueText(pVal, SQLITE_UTF16LE); } #endif /* SQLITE_OMIT_UTF16 */ +/* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five +** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating +** point number string BLOB NULL +*/ SQLITE_API int sqlite3_value_type(sqlite3_value* pVal){ - return pVal->type; + static const u8 aType[] = { + SQLITE_BLOB, /* 0x00 */ + SQLITE_NULL, /* 0x01 */ + SQLITE_TEXT, /* 0x02 */ + SQLITE_NULL, /* 0x03 */ + SQLITE_INTEGER, /* 0x04 */ + SQLITE_NULL, /* 0x05 */ + SQLITE_INTEGER, /* 0x06 */ + SQLITE_NULL, /* 0x07 */ + SQLITE_FLOAT, /* 0x08 */ + SQLITE_NULL, /* 0x09 */ + SQLITE_FLOAT, /* 0x0a */ + SQLITE_NULL, /* 0x0b */ + SQLITE_INTEGER, /* 0x0c */ + SQLITE_NULL, /* 0x0d */ + SQLITE_INTEGER, /* 0x0e */ + SQLITE_NULL, /* 0x0f */ + SQLITE_BLOB, /* 0x10 */ + SQLITE_NULL, /* 0x11 */ + SQLITE_TEXT, /* 0x12 */ + SQLITE_NULL, /* 0x13 */ + SQLITE_INTEGER, /* 0x14 */ + SQLITE_NULL, /* 0x15 */ + SQLITE_INTEGER, /* 0x16 */ + SQLITE_NULL, /* 0x17 */ + SQLITE_FLOAT, /* 0x18 */ + SQLITE_NULL, /* 0x19 */ + SQLITE_FLOAT, /* 0x1a */ + SQLITE_NULL, /* 0x1b */ + SQLITE_INTEGER, /* 0x1c */ + SQLITE_NULL, /* 0x1d */ + SQLITE_INTEGER, /* 0x1e */ + SQLITE_NULL, /* 0x1f */ + }; + return aType[pVal->flags&MEM_AffMask]; } +/* Make a copy of an sqlite3_value object +*/ +SQLITE_API sqlite3_value *sqlite3_value_dup(const sqlite3_value *pOrig){ + sqlite3_value *pNew; + if( pOrig==0 ) return 0; + pNew = sqlite3_malloc( sizeof(*pNew) ); + if( pNew==0 ) return 0; + memset(pNew, 0, sizeof(*pNew)); + memcpy(pNew, pOrig, MEMCELLSIZE); + pNew->flags &= ~MEM_Dyn; + pNew->db = 0; + if( pNew->flags&(MEM_Str|MEM_Blob) ){ + pNew->flags &= ~(MEM_Static|MEM_Dyn); + pNew->flags |= MEM_Ephem; + if( sqlite3VdbeMemMakeWriteable(pNew)!=SQLITE_OK ){ + sqlite3ValueFree(pNew); + pNew = 0; + } + } + return pNew; +} + +/* Destroy an sqlite3_value object previously obtained from +** sqlite3_value_dup(). +*/ +SQLITE_API void sqlite3_value_free(sqlite3_value *pOld){ + sqlite3ValueFree(pOld); +} + + /**************************** sqlite3_result_ ******************************* ** The following routines are used by user-defined functions to specify ** the function result. ** -** The setStrOrError() funtion calls sqlite3VdbeMemSetStr() to store the +** The setStrOrError() function calls sqlite3VdbeMemSetStr() to store the ** result as a string or blob but if the string or blob is too large, it ** then sets the error code to SQLITE_TOOBIG +** +** The invokeValueDestructor(P,X) routine invokes destructor function X() +** on value P is not going to be used and need to be destroyed. */ static void setResultStrOrError( sqlite3_context *pCtx, /* Function context */ @@ -64958,10 +76150,26 @@ static void setResultStrOrError( u8 enc, /* Encoding of z. 0 for BLOBs */ void (*xDel)(void*) /* Destructor function */ ){ - if( sqlite3VdbeMemSetStr(&pCtx->s, z, n, enc, xDel)==SQLITE_TOOBIG ){ + if( sqlite3VdbeMemSetStr(pCtx->pOut, z, n, enc, xDel)==SQLITE_TOOBIG ){ sqlite3_result_error_toobig(pCtx); } } +static int invokeValueDestructor( + const void *p, /* Value to destroy */ + void (*xDel)(void*), /* The destructor */ + sqlite3_context *pCtx /* Set a SQLITE_TOOBIG error if no NULL */ +){ + assert( xDel!=SQLITE_DYNAMIC ); + if( xDel==0 ){ + /* noop */ + }else if( xDel==SQLITE_TRANSIENT ){ + /* noop */ + }else{ + xDel((void*)p); + } + if( pCtx ) sqlite3_result_error_toobig(pCtx); + return SQLITE_TOOBIG; +} SQLITE_API void sqlite3_result_blob( sqlite3_context *pCtx, const void *z, @@ -64969,38 +76177,58 @@ SQLITE_API void sqlite3_result_blob( void (*xDel)(void *) ){ assert( n>=0 ); - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); setResultStrOrError(pCtx, z, n, 0, xDel); } +SQLITE_API void sqlite3_result_blob64( + sqlite3_context *pCtx, + const void *z, + sqlite3_uint64 n, + void (*xDel)(void *) +){ + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + assert( xDel!=SQLITE_DYNAMIC ); + if( n>0x7fffffff ){ + (void)invokeValueDestructor(z, xDel, pCtx); + }else{ + setResultStrOrError(pCtx, z, (int)n, 0, xDel); + } +} SQLITE_API void sqlite3_result_double(sqlite3_context *pCtx, double rVal){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetDouble(&pCtx->s, rVal); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetDouble(pCtx->pOut, rVal); } SQLITE_API void sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); pCtx->isError = SQLITE_ERROR; pCtx->fErrorOrAux = 1; - sqlite3VdbeMemSetStr(&pCtx->s, z, n, SQLITE_UTF8, SQLITE_TRANSIENT); + sqlite3VdbeMemSetStr(pCtx->pOut, z, n, SQLITE_UTF8, SQLITE_TRANSIENT); } #ifndef SQLITE_OMIT_UTF16 SQLITE_API void sqlite3_result_error16(sqlite3_context *pCtx, const void *z, int n){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); pCtx->isError = SQLITE_ERROR; pCtx->fErrorOrAux = 1; - sqlite3VdbeMemSetStr(&pCtx->s, z, n, SQLITE_UTF16NATIVE, SQLITE_TRANSIENT); + sqlite3VdbeMemSetStr(pCtx->pOut, z, n, SQLITE_UTF16NATIVE, SQLITE_TRANSIENT); } #endif SQLITE_API void sqlite3_result_int(sqlite3_context *pCtx, int iVal){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetInt64(&pCtx->s, (i64)iVal); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetInt64(pCtx->pOut, (i64)iVal); } SQLITE_API void sqlite3_result_int64(sqlite3_context *pCtx, i64 iVal){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetInt64(&pCtx->s, iVal); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetInt64(pCtx->pOut, iVal); } SQLITE_API void sqlite3_result_null(sqlite3_context *pCtx){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetNull(&pCtx->s); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetNull(pCtx->pOut); +} +SQLITE_API void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){ + Mem *pOut = pCtx->pOut; + assert( sqlite3_mutex_held(pOut->db->mutex) ); + pOut->eSubtype = eSubtype & 0xff; + pOut->flags |= MEM_Subtype; } SQLITE_API void sqlite3_result_text( sqlite3_context *pCtx, @@ -65008,9 +76236,25 @@ SQLITE_API void sqlite3_result_text( int n, void (*xDel)(void *) ){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); setResultStrOrError(pCtx, z, n, SQLITE_UTF8, xDel); } +SQLITE_API void sqlite3_result_text64( + sqlite3_context *pCtx, + const char *z, + sqlite3_uint64 n, + void (*xDel)(void *), + unsigned char enc +){ + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + assert( xDel!=SQLITE_DYNAMIC ); + if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE; + if( n>0x7fffffff ){ + (void)invokeValueDestructor(z, xDel, pCtx); + }else{ + setResultStrOrError(pCtx, z, (int)n, enc, xDel); + } +} #ifndef SQLITE_OMIT_UTF16 SQLITE_API void sqlite3_result_text16( sqlite3_context *pCtx, @@ -65018,7 +76262,7 @@ SQLITE_API void sqlite3_result_text16( int n, void (*xDel)(void *) ){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); setResultStrOrError(pCtx, z, n, SQLITE_UTF16NATIVE, xDel); } SQLITE_API void sqlite3_result_text16be( @@ -65027,7 +76271,7 @@ SQLITE_API void sqlite3_result_text16be( int n, void (*xDel)(void *) ){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); setResultStrOrError(pCtx, z, n, SQLITE_UTF16BE, xDel); } SQLITE_API void sqlite3_result_text16le( @@ -65036,43 +76280,55 @@ SQLITE_API void sqlite3_result_text16le( int n, void (*xDel)(void *) ){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); setResultStrOrError(pCtx, z, n, SQLITE_UTF16LE, xDel); } #endif /* SQLITE_OMIT_UTF16 */ SQLITE_API void sqlite3_result_value(sqlite3_context *pCtx, sqlite3_value *pValue){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemCopy(&pCtx->s, pValue); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemCopy(pCtx->pOut, pValue); } SQLITE_API void sqlite3_result_zeroblob(sqlite3_context *pCtx, int n){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetZeroBlob(&pCtx->s, n); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetZeroBlob(pCtx->pOut, n); +} +SQLITE_API int sqlite3_result_zeroblob64(sqlite3_context *pCtx, u64 n){ + Mem *pOut = pCtx->pOut; + assert( sqlite3_mutex_held(pOut->db->mutex) ); + if( n>(u64)pOut->db->aLimit[SQLITE_LIMIT_LENGTH] ){ + return SQLITE_TOOBIG; + } + sqlite3VdbeMemSetZeroBlob(pCtx->pOut, (int)n); + return SQLITE_OK; } SQLITE_API void sqlite3_result_error_code(sqlite3_context *pCtx, int errCode){ pCtx->isError = errCode; pCtx->fErrorOrAux = 1; - if( pCtx->s.flags & MEM_Null ){ - sqlite3VdbeMemSetStr(&pCtx->s, sqlite3ErrStr(errCode), -1, +#ifdef SQLITE_DEBUG + if( pCtx->pVdbe ) pCtx->pVdbe->rcApp = errCode; +#endif + if( pCtx->pOut->flags & MEM_Null ){ + sqlite3VdbeMemSetStr(pCtx->pOut, sqlite3ErrStr(errCode), -1, SQLITE_UTF8, SQLITE_STATIC); } } /* Force an SQLITE_TOOBIG error. */ SQLITE_API void sqlite3_result_error_toobig(sqlite3_context *pCtx){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); pCtx->isError = SQLITE_TOOBIG; pCtx->fErrorOrAux = 1; - sqlite3VdbeMemSetStr(&pCtx->s, "string or blob too big", -1, + sqlite3VdbeMemSetStr(pCtx->pOut, "string or blob too big", -1, SQLITE_UTF8, SQLITE_STATIC); } /* An SQLITE_NOMEM error. */ SQLITE_API void sqlite3_result_error_nomem(sqlite3_context *pCtx){ - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); - sqlite3VdbeMemSetNull(&pCtx->s); - pCtx->isError = SQLITE_NOMEM; + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + sqlite3VdbeMemSetNull(pCtx->pOut); + pCtx->isError = SQLITE_NOMEM_BKPT; pCtx->fErrorOrAux = 1; - pCtx->s.db->mallocFailed = 1; + sqlite3OomFault(pCtx->pOut->db); } /* @@ -65086,9 +76342,12 @@ static int doWalCallbacks(sqlite3 *db){ for(i=0; inDb; i++){ Btree *pBt = db->aDb[i].pBt; if( pBt ){ - int nEntry = sqlite3PagerWalCallback(sqlite3BtreePager(pBt)); + int nEntry; + sqlite3BtreeEnter(pBt); + nEntry = sqlite3PagerWalCallback(sqlite3BtreePager(pBt)); + sqlite3BtreeLeave(pBt); if( db->xWalCallback && nEntry>0 && rc==SQLITE_OK ){ - rc = db->xWalCallback(db->pWalArg, db, db->aDb[i].zName, nEntry); + rc = db->xWalCallback(db->pWalArg, db, db->aDb[i].zDbSName, nEntry); } } } @@ -65096,6 +76355,7 @@ static int doWalCallbacks(sqlite3 *db){ return rc; } + /* ** Execute the statement pStmt, either until a row of data is ready, the ** statement is completely executed or an error occurs. @@ -65128,7 +76388,7 @@ static int sqlite3Step(Vdbe *p){ ** or SQLITE_BUSY error. */ #ifdef SQLITE_OMIT_AUTORESET - if( p->rc==SQLITE_BUSY || p->rc==SQLITE_LOCKED ){ + if( (rc = p->rc&0xff)==SQLITE_BUSY || rc==SQLITE_LOCKED ){ sqlite3_reset((sqlite3_stmt*)p); }else{ return SQLITE_MISUSE_BKPT; @@ -65142,7 +76402,7 @@ static int sqlite3Step(Vdbe *p){ db = p->db; if( db->mallocFailed ){ p->rc = SQLITE_NOMEM; - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } if( p->pc<=0 && p->expired ){ @@ -65164,8 +76424,11 @@ static int sqlite3Step(Vdbe *p){ ); #ifndef SQLITE_OMIT_TRACE - if( db->xProfile && !db->init.busy ){ + if( (db->xProfile || (db->mTrace & SQLITE_TRACE_PROFILE)!=0) + && !db->init.busy && p->zSql ){ sqlite3OsCurrentTimeInt64(db->pVfs, &p->startTime); + }else{ + assert( p->startTime==0 ); } #endif @@ -65174,6 +76437,9 @@ static int sqlite3Step(Vdbe *p){ if( p->bIsReader ) db->nVdbeRead++; p->pc = 0; } +#ifdef SQLITE_DEBUG + p->rcApp = SQLITE_OK; +#endif #ifndef SQLITE_OMIT_EXPLAIN if( p->explain ){ rc = sqlite3VdbeList(p); @@ -65186,13 +76452,8 @@ static int sqlite3Step(Vdbe *p){ } #ifndef SQLITE_OMIT_TRACE - /* Invoke the profile callback if there is one - */ - if( rc!=SQLITE_ROW && db->xProfile && !db->init.busy && p->zSql ){ - sqlite3_int64 iNow; - sqlite3OsCurrentTimeInt64(db->pVfs, &iNow); - db->xProfile(db->pProfileArg, p->zSql, (iNow - p->startTime)*1000000); - } + /* If the statement completed successfully, invoke the profile callback */ + if( rc!=SQLITE_ROW ) checkProfileCallback(db, p); #endif if( rc==SQLITE_DONE ){ @@ -65205,7 +76466,7 @@ static int sqlite3Step(Vdbe *p){ db->errCode = rc; if( SQLITE_NOMEM==sqlite3ApiExit(p->db, p->rc) ){ - p->rc = SQLITE_NOMEM; + p->rc = SQLITE_NOMEM_BKPT; } end_of_step: /* At this point local variable rc holds the value that should be @@ -65216,9 +76477,9 @@ end_of_step: ** were called on statement p. */ assert( rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR - || rc==SQLITE_BUSY || rc==SQLITE_MISUSE + || (rc&0xff)==SQLITE_BUSY || rc==SQLITE_MISUSE ); - assert( p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE ); + assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp ); if( p->isPrepareV2 && rc!=SQLITE_ROW && rc!=SQLITE_DONE ){ /* If this statement was prepared using sqlite3_prepare_v2(), and an ** error has occurred, then return the error code in p->rc to the @@ -65248,10 +76509,12 @@ SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){ sqlite3_mutex_enter(db->mutex); v->doingRerun = 0; while( (rc = sqlite3Step(v))==SQLITE_SCHEMA - && cnt++ < SQLITE_MAX_SCHEMA_RETRY - && (rc2 = rc = sqlite3Reprepare(v))==SQLITE_OK ){ + && cnt++ < SQLITE_MAX_SCHEMA_RETRY ){ + int savedPc = v->pc; + rc2 = rc = sqlite3Reprepare(v); + if( rc!=SQLITE_OK) break; sqlite3_reset(pStmt); - v->doingRerun = 1; + if( savedPc>=0 ) v->doingRerun = 1; assert( v->expired==0 ); } if( rc2!=SQLITE_OK ){ @@ -65264,14 +76527,13 @@ SQLITE_API int sqlite3_step(sqlite3_stmt *pStmt){ ** sqlite3_errmsg() and sqlite3_errcode(). */ const char *zErr = (const char *)sqlite3_value_text(db->pErr); - assert( zErr!=0 || db->mallocFailed ); sqlite3DbFree(db, v->zErrMsg); if( !db->mallocFailed ){ v->zErrMsg = sqlite3DbStrDup(db, zErr); v->rc = rc2; } else { v->zErrMsg = 0; - v->rc = rc = SQLITE_NOMEM; + v->rc = rc = SQLITE_NOMEM_BKPT; } } rc = sqlite3ApiExit(db, rc); @@ -65300,21 +76562,31 @@ SQLITE_API void *sqlite3_user_data(sqlite3_context *p){ ** application defined function. */ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context *p){ - assert( p && p->pFunc ); - return p->s.db; + assert( p && p->pOut ); + return p->pOut->db; } /* -** Return the current time for a statement +** Return the current time for a statement. If the current time +** is requested more than once within the same run of a single prepared +** statement, the exact same time is returned for each invocation regardless +** of the amount of time that elapses between invocations. In other words, +** the time returned is always the time of the first call. */ SQLITE_PRIVATE sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){ - Vdbe *v = p->pVdbe; int rc; - if( v->iCurrentTime==0 ){ - rc = sqlite3OsCurrentTimeInt64(p->s.db->pVfs, &v->iCurrentTime); - if( rc ) v->iCurrentTime = 0; +#ifndef SQLITE_ENABLE_STAT3_OR_STAT4 + sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime; + assert( p->pVdbe!=0 ); +#else + sqlite3_int64 iTime = 0; + sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime; +#endif + if( *piTime==0 ){ + rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, piTime); + if( rc ) *piTime = 0; } - return v->iCurrentTime; + return *piTime; } /* @@ -65340,41 +76612,55 @@ SQLITE_PRIVATE void sqlite3InvalidFunction( } /* -** Allocate or return the aggregate context for a user function. A new -** context is allocated on the first call. Subsequent calls return the -** same context that was returned on prior calls. +** Create a new aggregate context for p and return a pointer to +** its pMem->z element. */ -SQLITE_API void *sqlite3_aggregate_context(sqlite3_context *p, int nByte){ - Mem *pMem; - assert( p && p->pFunc && p->pFunc->xStep ); - assert( sqlite3_mutex_held(p->s.db->mutex) ); - pMem = p->pMem; - testcase( nByte<0 ); - if( (pMem->flags & MEM_Agg)==0 ){ - if( nByte<=0 ){ - sqlite3VdbeMemReleaseExternal(pMem); - pMem->flags = MEM_Null; - pMem->z = 0; - }else{ - sqlite3VdbeMemGrow(pMem, nByte, 0); - pMem->flags = MEM_Agg; - pMem->u.pDef = p->pFunc; - if( pMem->z ){ - memset(pMem->z, 0, nByte); - } +static SQLITE_NOINLINE void *createAggContext(sqlite3_context *p, int nByte){ + Mem *pMem = p->pMem; + assert( (pMem->flags & MEM_Agg)==0 ); + if( nByte<=0 ){ + sqlite3VdbeMemSetNull(pMem); + pMem->z = 0; + }else{ + sqlite3VdbeMemClearAndResize(pMem, nByte); + pMem->flags = MEM_Agg; + pMem->u.pDef = p->pFunc; + if( pMem->z ){ + memset(pMem->z, 0, nByte); } } return (void*)pMem->z; } /* -** Return the auxilary data pointer, if any, for the iArg'th argument to +** Allocate or return the aggregate context for a user function. A new +** context is allocated on the first call. Subsequent calls return the +** same context that was returned on prior calls. +*/ +SQLITE_API void *sqlite3_aggregate_context(sqlite3_context *p, int nByte){ + assert( p && p->pFunc && p->pFunc->xFinalize ); + assert( sqlite3_mutex_held(p->pOut->db->mutex) ); + testcase( nByte<0 ); + if( (p->pMem->flags & MEM_Agg)==0 ){ + return createAggContext(p, nByte); + }else{ + return (void*)p->pMem->z; + } +} + +/* +** Return the auxiliary data pointer, if any, for the iArg'th argument to ** the user-function defined by pCtx. */ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ AuxData *pAuxData; - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); +#if SQLITE_ENABLE_STAT3_OR_STAT4 + if( pCtx->pVdbe==0 ) return 0; +#else + assert( pCtx->pVdbe!=0 ); +#endif for(pAuxData=pCtx->pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; } @@ -65383,7 +76669,7 @@ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context *pCtx, int iArg){ } /* -** Set the auxilary data pointer and delete function, for the iArg'th +** Set the auxiliary data pointer and delete function, for the iArg'th ** argument to the user-function defined by pCtx. Any previous value is ** deleted by calling the delete function specified when it was set. */ @@ -65396,8 +76682,13 @@ SQLITE_API void sqlite3_set_auxdata( AuxData *pAuxData; Vdbe *pVdbe = pCtx->pVdbe; - assert( sqlite3_mutex_held(pCtx->s.db->mutex) ); + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); if( iArg<0 ) goto failed; +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + if( pVdbe==0 ) goto failed; +#else + assert( pVdbe!=0 ); +#endif for(pAuxData=pVdbe->pAuxData; pAuxData; pAuxData=pAuxData->pNext){ if( pAuxData->iOp==pCtx->iOp && pAuxData->iArg==iArg ) break; @@ -65429,7 +76720,7 @@ failed: #ifndef SQLITE_OMIT_DEPRECATED /* -** Return the number of times the Step function of a aggregate has been +** Return the number of times the Step function of an aggregate has been ** called. ** ** This function is deprecated. Do not use it for new code. It is @@ -65438,7 +76729,7 @@ failed: ** context. */ SQLITE_API int sqlite3_aggregate_count(sqlite3_context *p){ - assert( p && p->pMem && p->pFunc && p->pFunc->xStep ); + assert( p && p->pMem && p->pFunc && p->pFunc->xFinalize ); return p->pMem->n; } #endif @@ -65461,6 +76752,42 @@ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt){ return pVm->nResColumn; } +/* +** Return a pointer to static memory containing an SQL NULL value. +*/ +static const Mem *columnNullValue(void){ + /* Even though the Mem structure contains an element + ** of type i64, on certain architectures (x86) with certain compiler + ** switches (-Os), gcc may align this Mem object on a 4-byte boundary + ** instead of an 8-byte one. This all works fine, except that when + ** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s + ** that a Mem structure is located on an 8-byte boundary. To prevent + ** these assert()s from failing, when building with SQLITE_DEBUG defined + ** using gcc, we force nullMem to be 8-byte aligned using the magical + ** __attribute__((aligned(8))) macro. */ + static const Mem nullMem +#if defined(SQLITE_DEBUG) && defined(__GNUC__) + __attribute__((aligned(8))) +#endif + = { + /* .u = */ {0}, + /* .flags = */ (u16)MEM_Null, + /* .enc = */ (u8)0, + /* .eSubtype = */ (u8)0, + /* .n = */ (int)0, + /* .z = */ (char*)0, + /* .zMalloc = */ (char*)0, + /* .szMalloc = */ (int)0, + /* .uTemp = */ (u32)0, + /* .db = */ (sqlite3*)0, + /* .xDel = */ (void(*)(void*))0, +#ifdef SQLITE_DEBUG + /* .pScopyFrom = */ (Mem*)0, + /* .pFiller = */ (void*)0, +#endif + }; + return &nullMem; +} /* ** Check to see if column iCol of the given statement is valid. If @@ -65473,36 +76800,14 @@ static Mem *columnMem(sqlite3_stmt *pStmt, int i){ Mem *pOut; pVm = (Vdbe *)pStmt; - if( pVm && pVm->pResultSet!=0 && inResColumn && i>=0 ){ - sqlite3_mutex_enter(pVm->db->mutex); + if( pVm==0 ) return (Mem*)columnNullValue(); + assert( pVm->db ); + sqlite3_mutex_enter(pVm->db->mutex); + if( pVm->pResultSet!=0 && inResColumn && i>=0 ){ pOut = &pVm->pResultSet[i]; }else{ - /* If the value passed as the second argument is out of range, return - ** a pointer to the following static Mem object which contains the - ** value SQL NULL. Even though the Mem structure contains an element - ** of type i64, on certain architectures (x86) with certain compiler - ** switches (-Os), gcc may align this Mem object on a 4-byte boundary - ** instead of an 8-byte one. This all works fine, except that when - ** running with SQLITE_DEBUG defined the SQLite code sometimes assert()s - ** that a Mem structure is located on an 8-byte boundary. To prevent - ** these assert()s from failing, when building with SQLITE_DEBUG defined - ** using gcc, we force nullMem to be 8-byte aligned using the magical - ** __attribute__((aligned(8))) macro. */ - static const Mem nullMem -#if defined(SQLITE_DEBUG) && defined(__GNUC__) - __attribute__((aligned(8))) -#endif - = {0, "", (double)0, {0}, 0, MEM_Null, SQLITE_NULL, 0, -#ifdef SQLITE_DEBUG - 0, 0, /* pScopyFrom, pFiller */ -#endif - 0, 0 }; - - if( pVm && ALWAYS(pVm->db) ){ - sqlite3_mutex_enter(pVm->db->mutex); - sqlite3Error(pVm->db, SQLITE_RANGE, 0); - } - pOut = (Mem*)&nullMem; + sqlite3Error(pVm->db, SQLITE_RANGE); + pOut = (Mem*)columnNullValue(); } return pOut; } @@ -65534,6 +76839,8 @@ static void columnMallocFailure(sqlite3_stmt *pStmt) */ Vdbe *p = (Vdbe *)pStmt; if( p ){ + assert( p->db!=0 ); + assert( sqlite3_mutex_held(p->db->mutex) ); p->rc = sqlite3ApiExit(p->db, p->rc); sqlite3_mutex_leave(p->db->mutex); } @@ -65627,11 +76934,19 @@ static const void *columnName( const void *(*xFunc)(Mem*), int useType ){ - const void *ret = 0; - Vdbe *p = (Vdbe *)pStmt; + const void *ret; + Vdbe *p; int n; - sqlite3 *db = p->db; - + sqlite3 *db; +#ifdef SQLITE_ENABLE_API_ARMOR + if( pStmt==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + ret = 0; + p = (Vdbe *)pStmt; + db = p->db; assert( db!=0 ); n = sqlite3_column_count(pStmt); if( N=0 ){ @@ -65643,7 +76958,7 @@ static const void *columnName( ** is the case, clear the mallocFailed flag and return NULL. */ if( db->mallocFailed ){ - db->mallocFailed = 0; + sqlite3OomClear(db); ret = 0; } sqlite3_mutex_leave(db->mutex); @@ -65696,7 +77011,7 @@ SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt *pStmt, int N){ /* ** Return the name of the database from which a result column derives. ** NULL is returned if the result column is an expression or constant or -** anything else which is not an unabiguous reference to a database column. +** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt *pStmt, int N){ return columnName( @@ -65712,7 +77027,7 @@ SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt *pStmt, int N /* ** Return the name of the table from which a result column derives. ** NULL is returned if the result column is an expression or constant or -** anything else which is not an unabiguous reference to a database column. +** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt *pStmt, int N){ return columnName( @@ -65728,7 +77043,7 @@ SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt *pStmt, int N){ /* ** Return the name of the table column from which a result column derives. ** NULL is returned if the result column is an expression or constant or -** anything else which is not an unabiguous reference to a database column. +** anything else which is not an unambiguous reference to a database column. */ SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt *pStmt, int N){ return columnName( @@ -65765,14 +77080,14 @@ static int vdbeUnbind(Vdbe *p, int i){ } sqlite3_mutex_enter(p->db->mutex); if( p->magic!=VDBE_MAGIC_RUN || p->pc>=0 ){ - sqlite3Error(p->db, SQLITE_MISUSE, 0); + sqlite3Error(p->db, SQLITE_MISUSE); sqlite3_mutex_leave(p->db->mutex); sqlite3_log(SQLITE_MISUSE, "bind on a busy prepared statement: [%s]", p->zSql); return SQLITE_MISUSE_BKPT; } if( i<1 || i>p->nVar ){ - sqlite3Error(p->db, SQLITE_RANGE, 0); + sqlite3Error(p->db, SQLITE_RANGE); sqlite3_mutex_leave(p->db->mutex); return SQLITE_RANGE; } @@ -65780,7 +77095,7 @@ static int vdbeUnbind(Vdbe *p, int i){ pVar = &p->aVar[i]; sqlite3VdbeMemRelease(pVar); pVar->flags = MEM_Null; - sqlite3Error(p->db, SQLITE_OK, 0); + sqlite3Error(p->db, SQLITE_OK); /* If the bit corresponding to this variable in Vdbe.expmask is set, then ** binding a new value to this variable invalidates the current query plan. @@ -65822,7 +77137,7 @@ static int bindText( if( rc==SQLITE_OK && encoding!=0 ){ rc = sqlite3VdbeChangeEncoding(pVar, ENC(p->db)); } - sqlite3Error(p->db, rc, 0); + sqlite3Error(p->db, rc); rc = sqlite3ApiExit(p->db, rc); } sqlite3_mutex_leave(p->db->mutex); @@ -65843,8 +77158,25 @@ SQLITE_API int sqlite3_bind_blob( int nData, void (*xDel)(void*) ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( nData<0 ) return SQLITE_MISUSE_BKPT; +#endif return bindText(pStmt, i, zData, nData, xDel, 0); } +SQLITE_API int sqlite3_bind_blob64( + sqlite3_stmt *pStmt, + int i, + const void *zData, + sqlite3_uint64 nData, + void (*xDel)(void*) +){ + assert( xDel!=SQLITE_DYNAMIC ); + if( nData>0x7fffffff ){ + return invokeValueDestructor(zData, xDel, 0); + }else{ + return bindText(pStmt, i, zData, (int)nData, xDel, 0); + } +} SQLITE_API int sqlite3_bind_double(sqlite3_stmt *pStmt, int i, double rValue){ int rc; Vdbe *p = (Vdbe *)pStmt; @@ -65886,6 +77218,22 @@ SQLITE_API int sqlite3_bind_text( ){ return bindText(pStmt, i, zData, nData, xDel, SQLITE_UTF8); } +SQLITE_API int sqlite3_bind_text64( + sqlite3_stmt *pStmt, + int i, + const char *zData, + sqlite3_uint64 nData, + void (*xDel)(void*), + unsigned char enc +){ + assert( xDel!=SQLITE_DYNAMIC ); + if( nData>0x7fffffff ){ + return invokeValueDestructor(zData, xDel, 0); + }else{ + if( enc==SQLITE_UTF16 ) enc = SQLITE_UTF16NATIVE; + return bindText(pStmt, i, zData, (int)nData, xDel, enc); + } +} #ifndef SQLITE_OMIT_UTF16 SQLITE_API int sqlite3_bind_text16( sqlite3_stmt *pStmt, @@ -65899,13 +77247,13 @@ SQLITE_API int sqlite3_bind_text16( #endif /* SQLITE_OMIT_UTF16 */ SQLITE_API int sqlite3_bind_value(sqlite3_stmt *pStmt, int i, const sqlite3_value *pValue){ int rc; - switch( pValue->type ){ + switch( sqlite3_value_type((sqlite3_value*)pValue) ){ case SQLITE_INTEGER: { rc = sqlite3_bind_int64(pStmt, i, pValue->u.i); break; } case SQLITE_FLOAT: { - rc = sqlite3_bind_double(pStmt, i, pValue->r); + rc = sqlite3_bind_double(pStmt, i, pValue->u.r); break; } case SQLITE_BLOB: { @@ -65938,6 +77286,20 @@ SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt *pStmt, int i, int n){ } return rc; } +SQLITE_API int sqlite3_bind_zeroblob64(sqlite3_stmt *pStmt, int i, sqlite3_uint64 n){ + int rc; + Vdbe *p = (Vdbe *)pStmt; + sqlite3_mutex_enter(p->db->mutex); + if( n>(u64)p->db->aLimit[SQLITE_LIMIT_LENGTH] ){ + rc = SQLITE_TOOBIG; + }else{ + assert( (n & 0x7FFFFFFF)==n ); + rc = sqlite3_bind_zeroblob(pStmt, i, n); + } + rc = sqlite3ApiExit(p->db, rc); + sqlite3_mutex_leave(p->db->mutex); + return rc; +} /* ** Return the number of wildcards that can be potentially bound to. @@ -65956,10 +77318,8 @@ SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){ */ SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){ Vdbe *p = (Vdbe*)pStmt; - if( p==0 || i<1 || i>p->nzVar ){ - return 0; - } - return p->azVar[i-1]; + if( p==0 ) return 0; + return sqlite3VListNumToName(p->pVList, i); } /* @@ -65968,19 +77328,8 @@ SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){ ** return 0. */ SQLITE_PRIVATE int sqlite3VdbeParameterIndex(Vdbe *p, const char *zName, int nName){ - int i; - if( p==0 ){ - return 0; - } - if( zName ){ - for(i=0; inzVar; i++){ - const char *z = p->azVar[i]; - if( z && strncmp(z,zName,nName)==0 && z[nName]==0 ){ - return i+1; - } - } - } - return 0; + if( p==0 || zName==0 ) return 0; + return sqlite3VListNameToNum(p->pVList, zName, nName); } SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt *pStmt, const char *zName){ return sqlite3VdbeParameterIndex((Vdbe*)pStmt, zName, sqlite3Strlen30(zName)); @@ -66008,7 +77357,7 @@ SQLITE_PRIVATE int sqlite3TransferBindings(sqlite3_stmt *pFromStmt, sqlite3_stmt ** Deprecated external interface. Internal/core SQLite code ** should call sqlite3TransferBindings. ** -** Is is misuse to call this routine with statements from different +** It is misuse to call this routine with statements from different ** database connections. But as this is a deprecated interface, we ** will not bother to check for that condition. ** @@ -66055,7 +77404,7 @@ SQLITE_API int sqlite3_stmt_readonly(sqlite3_stmt *pStmt){ */ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){ Vdbe *v = (Vdbe*)pStmt; - return v!=0 && v->pc>0 && v->magic==VDBE_MAGIC_RUN; + return v!=0 && v->magic==VDBE_MAGIC_RUN && v->pc>=0; } /* @@ -66066,6 +77415,12 @@ SQLITE_API int sqlite3_stmt_busy(sqlite3_stmt *pStmt){ */ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){ sqlite3_stmt *pNext; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(pDb) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(pDb->mutex); if( pStmt==0 ){ pNext = (sqlite3_stmt*)pDb->pVdbe; @@ -66081,11 +77436,306 @@ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt){ */ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){ Vdbe *pVdbe = (Vdbe*)pStmt; - u32 v = pVdbe->aCounter[op]; + u32 v; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !pStmt ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + v = pVdbe->aCounter[op]; if( resetFlag ) pVdbe->aCounter[op] = 0; return (int)v; } +/* +** Return the SQL associated with a prepared statement +*/ +SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt){ + Vdbe *p = (Vdbe *)pStmt; + return p ? p->zSql : 0; +} + +/* +** Return the SQL associated with a prepared statement with +** bound parameters expanded. Space to hold the returned string is +** obtained from sqlite3_malloc(). The caller is responsible for +** freeing the returned string by passing it to sqlite3_free(). +** +** The SQLITE_TRACE_SIZE_LIMIT puts an upper bound on the size of +** expanded bound parameters. +*/ +SQLITE_API char *sqlite3_expanded_sql(sqlite3_stmt *pStmt){ +#ifdef SQLITE_OMIT_TRACE + return 0; +#else + char *z = 0; + const char *zSql = sqlite3_sql(pStmt); + if( zSql ){ + Vdbe *p = (Vdbe *)pStmt; + sqlite3_mutex_enter(p->db->mutex); + z = sqlite3VdbeExpandSql(p, zSql); + sqlite3_mutex_leave(p->db->mutex); + } + return z; +#endif +} + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** Allocate and populate an UnpackedRecord structure based on the serialized +** record in nKey/pKey. Return a pointer to the new UnpackedRecord structure +** if successful, or a NULL pointer if an OOM error is encountered. +*/ +static UnpackedRecord *vdbeUnpackRecord( + KeyInfo *pKeyInfo, + int nKey, + const void *pKey +){ + UnpackedRecord *pRet; /* Return value */ + + pRet = sqlite3VdbeAllocUnpackedRecord(pKeyInfo); + if( pRet ){ + memset(pRet->aMem, 0, sizeof(Mem)*(pKeyInfo->nField+1)); + sqlite3VdbeRecordUnpack(pKeyInfo, nKey, pKey, pRet); + } + return pRet; +} + +/* +** This function is called from within a pre-update callback to retrieve +** a field of the row currently being updated or deleted. +*/ +SQLITE_API int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppValue){ + PreUpdate *p = db->pPreUpdate; + Mem *pMem; + int rc = SQLITE_OK; + + /* Test that this call is being made from within an SQLITE_DELETE or + ** SQLITE_UPDATE pre-update callback, and that iIdx is within range. */ + if( !p || p->op==SQLITE_INSERT ){ + rc = SQLITE_MISUSE_BKPT; + goto preupdate_old_out; + } + if( p->pPk ){ + iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx); + } + if( iIdx>=p->pCsr->nField || iIdx<0 ){ + rc = SQLITE_RANGE; + goto preupdate_old_out; + } + + /* If the old.* record has not yet been loaded into memory, do so now. */ + if( p->pUnpacked==0 ){ + u32 nRec; + u8 *aRec; + + nRec = sqlite3BtreePayloadSize(p->pCsr->uc.pCursor); + aRec = sqlite3DbMallocRaw(db, nRec); + if( !aRec ) goto preupdate_old_out; + rc = sqlite3BtreePayload(p->pCsr->uc.pCursor, 0, nRec, aRec); + if( rc==SQLITE_OK ){ + p->pUnpacked = vdbeUnpackRecord(&p->keyinfo, nRec, aRec); + if( !p->pUnpacked ) rc = SQLITE_NOMEM; + } + if( rc!=SQLITE_OK ){ + sqlite3DbFree(db, aRec); + goto preupdate_old_out; + } + p->aRecord = aRec; + } + + pMem = *ppValue = &p->pUnpacked->aMem[iIdx]; + if( iIdx==p->pTab->iPKey ){ + sqlite3VdbeMemSetInt64(pMem, p->iKey1); + }else if( iIdx>=p->pUnpacked->nField ){ + *ppValue = (sqlite3_value *)columnNullValue(); + }else if( p->pTab->aCol[iIdx].affinity==SQLITE_AFF_REAL ){ + if( pMem->flags & MEM_Int ){ + sqlite3VdbeMemRealify(pMem); + } + } + + preupdate_old_out: + sqlite3Error(db, rc); + return sqlite3ApiExit(db, rc); +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** This function is called from within a pre-update callback to retrieve +** the number of columns in the row being updated, deleted or inserted. +*/ +SQLITE_API int sqlite3_preupdate_count(sqlite3 *db){ + PreUpdate *p = db->pPreUpdate; + return (p ? p->keyinfo.nField : 0); +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** This function is designed to be called from within a pre-update callback +** only. It returns zero if the change that caused the callback was made +** immediately by a user SQL statement. Or, if the change was made by a +** trigger program, it returns the number of trigger programs currently +** on the stack (1 for a top-level trigger, 2 for a trigger fired by a +** top-level trigger etc.). +** +** For the purposes of the previous paragraph, a foreign key CASCADE, SET NULL +** or SET DEFAULT action is considered a trigger. +*/ +SQLITE_API int sqlite3_preupdate_depth(sqlite3 *db){ + PreUpdate *p = db->pPreUpdate; + return (p ? p->v->nFrame : 0); +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** This function is called from within a pre-update callback to retrieve +** a field of the row currently being updated or inserted. +*/ +SQLITE_API int sqlite3_preupdate_new(sqlite3 *db, int iIdx, sqlite3_value **ppValue){ + PreUpdate *p = db->pPreUpdate; + int rc = SQLITE_OK; + Mem *pMem; + + if( !p || p->op==SQLITE_DELETE ){ + rc = SQLITE_MISUSE_BKPT; + goto preupdate_new_out; + } + if( p->pPk && p->op!=SQLITE_UPDATE ){ + iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx); + } + if( iIdx>=p->pCsr->nField || iIdx<0 ){ + rc = SQLITE_RANGE; + goto preupdate_new_out; + } + + if( p->op==SQLITE_INSERT ){ + /* For an INSERT, memory cell p->iNewReg contains the serialized record + ** that is being inserted. Deserialize it. */ + UnpackedRecord *pUnpack = p->pNewUnpacked; + if( !pUnpack ){ + Mem *pData = &p->v->aMem[p->iNewReg]; + rc = ExpandBlob(pData); + if( rc!=SQLITE_OK ) goto preupdate_new_out; + pUnpack = vdbeUnpackRecord(&p->keyinfo, pData->n, pData->z); + if( !pUnpack ){ + rc = SQLITE_NOMEM; + goto preupdate_new_out; + } + p->pNewUnpacked = pUnpack; + } + pMem = &pUnpack->aMem[iIdx]; + if( iIdx==p->pTab->iPKey ){ + sqlite3VdbeMemSetInt64(pMem, p->iKey2); + }else if( iIdx>=pUnpack->nField ){ + pMem = (sqlite3_value *)columnNullValue(); + } + }else{ + /* For an UPDATE, memory cell (p->iNewReg+1+iIdx) contains the required + ** value. Make a copy of the cell contents and return a pointer to it. + ** It is not safe to return a pointer to the memory cell itself as the + ** caller may modify the value text encoding. + */ + assert( p->op==SQLITE_UPDATE ); + if( !p->aNew ){ + p->aNew = (Mem *)sqlite3DbMallocZero(db, sizeof(Mem) * p->pCsr->nField); + if( !p->aNew ){ + rc = SQLITE_NOMEM; + goto preupdate_new_out; + } + } + assert( iIdx>=0 && iIdxpCsr->nField ); + pMem = &p->aNew[iIdx]; + if( pMem->flags==0 ){ + if( iIdx==p->pTab->iPKey ){ + sqlite3VdbeMemSetInt64(pMem, p->iKey2); + }else{ + rc = sqlite3VdbeMemCopy(pMem, &p->v->aMem[p->iNewReg+1+iIdx]); + if( rc!=SQLITE_OK ) goto preupdate_new_out; + } + } + } + *ppValue = pMem; + + preupdate_new_out: + sqlite3Error(db, rc); + return sqlite3ApiExit(db, rc); +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +/* +** Return status data for a single loop within query pStmt. +*/ +SQLITE_API int sqlite3_stmt_scanstatus( + sqlite3_stmt *pStmt, /* Prepared statement being queried */ + int idx, /* Index of loop to report on */ + int iScanStatusOp, /* Which metric to return */ + void *pOut /* OUT: Write the answer here */ +){ + Vdbe *p = (Vdbe*)pStmt; + ScanStatus *pScan; + if( idx<0 || idx>=p->nScan ) return 1; + pScan = &p->aScan[idx]; + switch( iScanStatusOp ){ + case SQLITE_SCANSTAT_NLOOP: { + *(sqlite3_int64*)pOut = p->anExec[pScan->addrLoop]; + break; + } + case SQLITE_SCANSTAT_NVISIT: { + *(sqlite3_int64*)pOut = p->anExec[pScan->addrVisit]; + break; + } + case SQLITE_SCANSTAT_EST: { + double r = 1.0; + LogEst x = pScan->nEst; + while( x<100 ){ + x += 10; + r *= 0.5; + } + *(double*)pOut = r*sqlite3LogEstToInt(x); + break; + } + case SQLITE_SCANSTAT_NAME: { + *(const char**)pOut = pScan->zName; + break; + } + case SQLITE_SCANSTAT_EXPLAIN: { + if( pScan->addrExplain ){ + *(const char**)pOut = p->aOp[ pScan->addrExplain ].p4.z; + }else{ + *(const char**)pOut = 0; + } + break; + } + case SQLITE_SCANSTAT_SELECTID: { + if( pScan->addrExplain ){ + *(int*)pOut = p->aOp[ pScan->addrExplain ].p1; + }else{ + *(int*)pOut = -1; + } + break; + } + default: { + return 1; + } + } + return 0; +} + +/* +** Zero all counters associated with the sqlite3_stmt_scanstatus() data. +*/ +SQLITE_API void sqlite3_stmt_scanstatus_reset(sqlite3_stmt *pStmt){ + Vdbe *p = (Vdbe*)pStmt; + memset(p->anExec, 0, p->nOp * sizeof(i64)); +} +#endif /* SQLITE_ENABLE_STMT_SCANSTATUS */ + /************** End of vdbeapi.c *********************************************/ /************** Begin file vdbetrace.c ***************************************/ /* @@ -66105,6 +77755,8 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt *pStmt, int op, int resetFlag){ ** ** The Vdbe parse-tree explainer is also found here. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ #ifndef SQLITE_OMIT_TRACE @@ -66152,7 +77804,7 @@ static int findNextHostParameter(const char *zSql, int *pnToken){ ** ALGORITHM: Scan the input string looking for host parameters in any of ** these forms: ?, ?N, $A, @A, :A. Take care to avoid text within ** string literals, quoted identifier names, and comments. For text forms, -** the host parameter index is found by scanning the perpared +** the host parameter index is found by scanning the prepared ** statement for the corresponding OP_Variable opcode. Once the host ** parameter index is known, locate the value in p->aVar[]. Then render ** the value as a literal in place of the host parameter name. @@ -66169,12 +77821,14 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( int i; /* Loop counter */ Mem *pVar; /* Value of a host parameter */ StrAccum out; /* Accumulate the output here */ +#ifndef SQLITE_OMIT_UTF16 + Mem utf8; /* Used to convert UTF16 parameters into UTF8 for display */ +#endif char zBase[100]; /* Initial working space */ db = p->db; - sqlite3StrAccumInit(&out, zBase, sizeof(zBase), + sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase), db->aLimit[SQLITE_LIMIT_LENGTH]); - out.db = db; if( db->nVdbeExec>1 ){ while( *zRawSql ){ const char *zStart = zRawSql; @@ -66183,6 +77837,8 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( assert( (zRawSql - zStart) > 0 ); sqlite3StrAccumAppend(&out, zStart, (int)(zRawSql-zStart)); } + }else if( p->nVar==0 ){ + sqlite3StrAccumAppend(&out, zRawSql, sqlite3Strlen30(zRawSql)); }else{ while( zRawSql[0] ){ n = findNextHostParameter(zRawSql, &nToken); @@ -66199,10 +77855,12 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( idx = nextIndex; } }else{ - assert( zRawSql[0]==':' || zRawSql[0]=='$' || zRawSql[0]=='@' ); + assert( zRawSql[0]==':' || zRawSql[0]=='$' || + zRawSql[0]=='@' || zRawSql[0]=='#' ); testcase( zRawSql[0]==':' ); testcase( zRawSql[0]=='$' ); testcase( zRawSql[0]=='@' ); + testcase( zRawSql[0]=='#' ); idx = sqlite3VdbeParameterIndex(p, zRawSql, nToken); assert( idx>0 ); } @@ -66213,19 +77871,21 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( if( pVar->flags & MEM_Null ){ sqlite3StrAccumAppend(&out, "NULL", 4); }else if( pVar->flags & MEM_Int ){ - sqlite3XPrintf(&out, 0, "%lld", pVar->u.i); + sqlite3XPrintf(&out, "%lld", pVar->u.i); }else if( pVar->flags & MEM_Real ){ - sqlite3XPrintf(&out, 0, "%!.15g", pVar->r); + sqlite3XPrintf(&out, "%!.15g", pVar->u.r); }else if( pVar->flags & MEM_Str ){ int nOut; /* Number of bytes of the string text to include in output */ #ifndef SQLITE_OMIT_UTF16 u8 enc = ENC(db); - Mem utf8; if( enc!=SQLITE_UTF8 ){ memset(&utf8, 0, sizeof(utf8)); utf8.db = db; sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC); - sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8); + if( SQLITE_NOMEM==sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8) ){ + out.accError = STRACCUM_NOMEM; + out.nAlloc = 0; + } pVar = &utf8; } #endif @@ -66236,17 +77896,17 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( while( nOutn && (pVar->z[nOut]&0xc0)==0x80 ){ nOut++; } } #endif - sqlite3XPrintf(&out, 0, "'%.*q'", nOut, pVar->z); + sqlite3XPrintf(&out, "'%.*q'", nOut, pVar->z); #ifdef SQLITE_TRACE_SIZE_LIMIT if( nOutn ){ - sqlite3XPrintf(&out, 0, "/*+%d bytes*/", pVar->n-nOut); + sqlite3XPrintf(&out, "/*+%d bytes*/", pVar->n-nOut); } #endif #ifndef SQLITE_OMIT_UTF16 if( enc!=SQLITE_UTF8 ) sqlite3VdbeMemRelease(&utf8); #endif }else if( pVar->flags & MEM_Zero ){ - sqlite3XPrintf(&out, 0, "zeroblob(%d)", pVar->u.nZero); + sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero); }else{ int nOut; /* Number of bytes of the blob to include in output */ assert( pVar->flags & MEM_Blob ); @@ -66256,137 +77916,23 @@ SQLITE_PRIVATE char *sqlite3VdbeExpandSql( if( nOut>SQLITE_TRACE_SIZE_LIMIT ) nOut = SQLITE_TRACE_SIZE_LIMIT; #endif for(i=0; iz[i]&0xff); + sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff); } sqlite3StrAccumAppend(&out, "'", 1); #ifdef SQLITE_TRACE_SIZE_LIMIT if( nOutn ){ - sqlite3XPrintf(&out, 0, "/*+%d bytes*/", pVar->n-nOut); + sqlite3XPrintf(&out, "/*+%d bytes*/", pVar->n-nOut); } #endif } } } + if( out.accError ) sqlite3StrAccumReset(&out); return sqlite3StrAccumFinish(&out); } #endif /* #ifndef SQLITE_OMIT_TRACE */ -/***************************************************************************** -** The following code implements the data-structure explaining logic -** for the Vdbe. -*/ - -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) - -/* -** Allocate a new Explain object -*/ -SQLITE_PRIVATE void sqlite3ExplainBegin(Vdbe *pVdbe){ - if( pVdbe ){ - Explain *p; - sqlite3BeginBenignMalloc(); - p = (Explain *)sqlite3MallocZero( sizeof(Explain) ); - if( p ){ - p->pVdbe = pVdbe; - sqlite3_free(pVdbe->pExplain); - pVdbe->pExplain = p; - sqlite3StrAccumInit(&p->str, p->zBase, sizeof(p->zBase), - SQLITE_MAX_LENGTH); - p->str.useMalloc = 2; - }else{ - sqlite3EndBenignMalloc(); - } - } -} - -/* -** Return true if the Explain ends with a new-line. -*/ -static int endsWithNL(Explain *p){ - return p && p->str.zText && p->str.nChar - && p->str.zText[p->str.nChar-1]=='\n'; -} - -/* -** Append text to the indentation -*/ -SQLITE_PRIVATE void sqlite3ExplainPrintf(Vdbe *pVdbe, const char *zFormat, ...){ - Explain *p; - if( pVdbe && (p = pVdbe->pExplain)!=0 ){ - va_list ap; - if( p->nIndent && endsWithNL(p) ){ - int n = p->nIndent; - if( n>ArraySize(p->aIndent) ) n = ArraySize(p->aIndent); - sqlite3AppendSpace(&p->str, p->aIndent[n-1]); - } - va_start(ap, zFormat); - sqlite3VXPrintf(&p->str, SQLITE_PRINTF_INTERNAL, zFormat, ap); - va_end(ap); - } -} - -/* -** Append a '\n' if there is not already one. -*/ -SQLITE_PRIVATE void sqlite3ExplainNL(Vdbe *pVdbe){ - Explain *p; - if( pVdbe && (p = pVdbe->pExplain)!=0 && !endsWithNL(p) ){ - sqlite3StrAccumAppend(&p->str, "\n", 1); - } -} - -/* -** Push a new indentation level. Subsequent lines will be indented -** so that they begin at the current cursor position. -*/ -SQLITE_PRIVATE void sqlite3ExplainPush(Vdbe *pVdbe){ - Explain *p; - if( pVdbe && (p = pVdbe->pExplain)!=0 ){ - if( p->str.zText && p->nIndentaIndent) ){ - const char *z = p->str.zText; - int i = p->str.nChar-1; - int x; - while( i>=0 && z[i]!='\n' ){ i--; } - x = (p->str.nChar - 1) - i; - if( p->nIndent && xaIndent[p->nIndent-1] ){ - x = p->aIndent[p->nIndent-1]; - } - p->aIndent[p->nIndent] = x; - } - p->nIndent++; - } -} - -/* -** Pop the indentation stack by one level. -*/ -SQLITE_PRIVATE void sqlite3ExplainPop(Vdbe *p){ - if( p && p->pExplain ) p->pExplain->nIndent--; -} - -/* -** Free the indentation structure -*/ -SQLITE_PRIVATE void sqlite3ExplainFinish(Vdbe *pVdbe){ - if( pVdbe && pVdbe->pExplain ){ - sqlite3_free(pVdbe->zExplain); - sqlite3ExplainNL(pVdbe); - pVdbe->zExplain = sqlite3StrAccumFinish(&pVdbe->pExplain->str); - sqlite3_free(pVdbe->pExplain); - pVdbe->pExplain = 0; - sqlite3EndBenignMalloc(); - } -} - -/* -** Return the explanation of a virtual machine. -*/ -SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe *pVdbe){ - return (pVdbe && pVdbe->zExplain) ? pVdbe->zExplain : 0; -} -#endif /* defined(SQLITE_DEBUG) */ - /************** End of vdbetrace.c *******************************************/ /************** Begin file vdbe.c ********************************************/ /* @@ -66400,33 +77946,8 @@ SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe *pVdbe){ ** May you share freely, never taking more than you give. ** ************************************************************************* -** The code in this file implements execution method of the -** Virtual Database Engine (VDBE). A separate file ("vdbeaux.c") -** handles housekeeping details such as creating and deleting -** VDBE instances. This file is solely interested in executing -** the VDBE program. -** -** In the external interface, an "sqlite3_stmt*" is an opaque pointer -** to a VDBE. -** -** The SQL parser generates a program which is then executed by -** the VDBE to do the work of the SQL statement. VDBE programs are -** similar in form to assembly language. The program consists of -** a linear sequence of operations. Each operation has an opcode -** and 5 operands. Operands P1, P2, and P3 are integers. Operand P4 -** is a null-terminated string. Operand P5 is an unsigned character. -** Few opcodes use all 5 operands. -** -** Computation results are stored on a set of registers numbered beginning -** with 1 and going up to Vdbe.nMem. Each register can store -** either an integer, a null-terminated string, a floating point -** number, or the SQL "NULL" value. An implicit conversion from one -** type to the other occurs as necessary. -** -** Most of the code in this file is taken up by the sqlite3VdbeExec() -** function which does the work of interpreting a VDBE program. -** But other routines are also provided to help in building up -** a program instruction by instruction. +** The code in this file implements the function that runs the +** bytecode of a prepared statement. ** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting @@ -66434,11 +77955,17 @@ SQLITE_PRIVATE const char *sqlite3VdbeExplanation(Vdbe *pVdbe){ ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ /* ** Invoke this macro on memory cells just prior to changing the ** value of the cell. This macro verifies that shallow copies are -** not misused. +** not misused. A shallow copy of a string or blob just copies a +** pointer to the string or blob, not the content. If the original +** is changed while the copy is still in use, the string or blob might +** be changed out from under the copy. This macro verifies that nothing +** like that ever happens. */ #ifdef SQLITE_DEBUG # define memAboutToChange(P,M) sqlite3VdbeMemAboutToChange(P,M) @@ -66497,7 +78024,17 @@ static void updateMaxBlobsize(Mem *p){ #endif /* -** The next global variable is incremented each type the OP_Found opcode +** This macro evaluates to true if either the update hook or the preupdate +** hook are enabled for database connect DB. +*/ +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +# define HAS_UPDATE_HOOK(DB) ((DB)->xPreUpdateCallback||(DB)->xUpdateCallback) +#else +# define HAS_UPDATE_HOOK(DB) ((DB)->xUpdateCallback) +#endif + +/* +** The next global variable is incremented each time the OP_Found opcode ** is executed. This is used to test whether or not the foreign key ** operation implemented using OP_FkIsZero is working. This variable ** has no function other than to help verify the correct operation of the @@ -66511,18 +78048,52 @@ SQLITE_API int sqlite3_found_count = 0; ** Test a register to see if it exceeds the current maximum blob size. ** If it does, record the new maximum blob size. */ -#if defined(SQLITE_TEST) && !defined(SQLITE_OMIT_BUILTIN_TEST) +#if defined(SQLITE_TEST) && !defined(SQLITE_UNTESTABLE) # define UPDATE_MAX_BLOBSIZE(P) updateMaxBlobsize(P) #else # define UPDATE_MAX_BLOBSIZE(P) #endif +/* +** Invoke the VDBE coverage callback, if that callback is defined. This +** feature is used for test suite validation only and does not appear an +** production builds. +** +** M is an integer, 2 or 3, that indices how many different ways the +** branch can go. It is usually 2. "I" is the direction the branch +** goes. 0 means falls through. 1 means branch is taken. 2 means the +** second alternative branch is taken. +** +** iSrcLine is the source code line (from the __LINE__ macro) that +** generated the VDBE instruction. This instrumentation assumes that all +** source code is in a single file (the amalgamation). Special values 1 +** and 2 for the iSrcLine parameter mean that this particular branch is +** always taken or never taken, respectively. +*/ +#if !defined(SQLITE_VDBE_COVERAGE) +# define VdbeBranchTaken(I,M) +#else +# define VdbeBranchTaken(I,M) vdbeTakeBranch(pOp->iSrcLine,I,M) + static void vdbeTakeBranch(int iSrcLine, u8 I, u8 M){ + if( iSrcLine<=2 && ALWAYS(iSrcLine>0) ){ + M = iSrcLine; + /* Assert the truth of VdbeCoverageAlwaysTaken() and + ** VdbeCoverageNeverTaken() */ + assert( (M & I)==I ); + }else{ + if( sqlite3GlobalConfig.xVdbeBranch==0 ) return; /*NO_TEST*/ + sqlite3GlobalConfig.xVdbeBranch(sqlite3GlobalConfig.pVdbeBranchArg, + iSrcLine,I,M); + } + } +#endif + /* ** Convert the given register into a string if it isn't one ** already. Return non-zero if a malloc() fails. */ #define Stringify(P, enc) \ - if(((P)->flags&(MEM_Str|MEM_Blob))==0 && sqlite3VdbeMemStringify(P,enc)) \ + if(((P)->flags&(MEM_Str|MEM_Blob))==0 && sqlite3VdbeMemStringify(P,enc,0)) \ { goto no_mem; } /* @@ -66534,38 +78105,14 @@ SQLITE_API int sqlite3_found_count = 0; ** ** This routine converts an ephemeral string into a dynamically allocated ** string that the register itself controls. In other words, it -** converts an MEM_Ephem string into an MEM_Dyn string. +** converts an MEM_Ephem string into a string with P.z==P.zMalloc. */ #define Deephemeralize(P) \ if( ((P)->flags&MEM_Ephem)!=0 \ && sqlite3VdbeMemMakeWriteable(P) ){ goto no_mem;} /* Return true if the cursor was opened using the OP_OpenSorter opcode. */ -# define isSorter(x) ((x)->pSorter!=0) - -/* -** Argument pMem points at a register that will be passed to a -** user-defined function or returned to the user as the result of a query. -** This routine sets the pMem->type variable used by the sqlite3_value_*() -** routines. -*/ -SQLITE_PRIVATE void sqlite3VdbeMemStoreType(Mem *pMem){ - int flags = pMem->flags; - if( flags & MEM_Null ){ - pMem->type = SQLITE_NULL; - } - else if( flags & MEM_Int ){ - pMem->type = SQLITE_INTEGER; - } - else if( flags & MEM_Real ){ - pMem->type = SQLITE_FLOAT; - } - else if( flags & MEM_Str ){ - pMem->type = SQLITE_TEXT; - }else{ - pMem->type = SQLITE_BLOB; - } -} +#define isSorter(x) ((x)->eCurType==CURTYPE_SORTER) /* ** Allocate VdbeCursor number iCur. Return a pointer to it. Return NULL @@ -66576,7 +78123,7 @@ static VdbeCursor *allocateCursor( int iCur, /* Index of the new VdbeCursor */ int nField, /* Number of fields in the table or index */ int iDb, /* Database the cursor belongs to, or -1 */ - int isBtreeCursor /* True for B-Tree. False for pseudo-table or vtab */ + u8 eCurType /* Type of the new cursor */ ){ /* Find the memory cell that will be used to store the blob of memory ** required for this VdbeCursor structure. It is convenient to use a @@ -66592,32 +78139,34 @@ static VdbeCursor *allocateCursor( ** be freed lazily via the sqlite3_release_memory() API. This ** minimizes the number of malloc calls made by the system. ** - ** Memory cells for cursors are allocated at the top of the address - ** space. Memory cell (p->nMem) corresponds to cursor 0. Space for - ** cursor 1 is managed by memory cell (p->nMem-1), etc. + ** The memory cell for cursor 0 is aMem[0]. The rest are allocated from + ** the top of the register space. Cursor 1 is at Mem[p->nMem-1]. + ** Cursor 2 is at Mem[p->nMem-2]. And so forth. */ - Mem *pMem = &p->aMem[p->nMem-iCur]; + Mem *pMem = iCur>0 ? &p->aMem[p->nMem-iCur] : p->aMem; int nByte; VdbeCursor *pCx = 0; nByte = ROUND8(sizeof(VdbeCursor)) + 2*sizeof(u32)*nField + - (isBtreeCursor?sqlite3BtreeCursorSize():0); + (eCurType==CURTYPE_BTREE?sqlite3BtreeCursorSize():0); - assert( iCurnCursor ); - if( p->apCsr[iCur] ){ + assert( iCur>=0 && iCurnCursor ); + if( p->apCsr[iCur] ){ /*OPTIMIZATION-IF-FALSE*/ sqlite3VdbeFreeCursor(p, p->apCsr[iCur]); p->apCsr[iCur] = 0; } - if( SQLITE_OK==sqlite3VdbeMemGrow(pMem, nByte, 0) ){ + if( SQLITE_OK==sqlite3VdbeMemClearAndResize(pMem, nByte) ){ p->apCsr[iCur] = pCx = (VdbeCursor*)pMem->z; - memset(pCx, 0, sizeof(VdbeCursor)); + memset(pCx, 0, offsetof(VdbeCursor,pAltCursor)); + pCx->eCurType = eCurType; pCx->iDb = iDb; pCx->nField = nField; - if( isBtreeCursor ){ - pCx->pCursor = (BtCursor*) + pCx->aOffset = &pCx->aType[nField]; + if( eCurType==CURTYPE_BTREE ){ + pCx->uc.pCursor = (BtCursor*) &pMem->z[ROUND8(sizeof(VdbeCursor))+2*sizeof(u32)*nField]; - sqlite3BtreeCursorZero(pCx->pCursor); + sqlite3BtreeCursorZero(pCx->uc.pCursor); } } return pCx; @@ -66628,21 +78177,29 @@ static VdbeCursor *allocateCursor( ** do so without loss of information. In other words, if the string ** looks like a number, convert it into a number. If it does not ** look like a number, leave it alone. +** +** If the bTryForInt flag is true, then extra effort is made to give +** an integer representation. Strings that look like floating point +** values but which have no fractional component (example: '48.00') +** will have a MEM_Int representation when bTryForInt is true. +** +** If bTryForInt is false, then if the input string contains a decimal +** point or exponential notation, the result is only MEM_Real, even +** if there is an exact integer representation of the quantity. */ -static void applyNumericAffinity(Mem *pRec){ - if( (pRec->flags & (MEM_Real|MEM_Int))==0 ){ - double rValue; - i64 iValue; - u8 enc = pRec->enc; - if( (pRec->flags&MEM_Str)==0 ) return; - if( sqlite3AtoF(pRec->z, &rValue, pRec->n, enc)==0 ) return; - if( 0==sqlite3Atoi64(pRec->z, &iValue, pRec->n, enc) ){ - pRec->u.i = iValue; - pRec->flags |= MEM_Int; - }else{ - pRec->r = rValue; - pRec->flags |= MEM_Real; - } +static void applyNumericAffinity(Mem *pRec, int bTryForInt){ + double rValue; + i64 iValue; + u8 enc = pRec->enc; + assert( (pRec->flags & (MEM_Str|MEM_Int|MEM_Real))==MEM_Str ); + if( sqlite3AtoF(pRec->z, &rValue, pRec->n, enc)==0 ) return; + if( 0==sqlite3Atoi64(pRec->z, &iValue, pRec->n, enc) ){ + pRec->u.i = iValue; + pRec->flags |= MEM_Int; + }else{ + pRec->u.r = rValue; + pRec->flags |= MEM_Real; + if( bTryForInt ) sqlite3VdbeIntegerAffinity(pRec); } } @@ -66661,7 +78218,7 @@ static void applyNumericAffinity(Mem *pRec){ ** SQLITE_AFF_TEXT: ** Convert pRec to a text representation. ** -** SQLITE_AFF_NONE: +** SQLITE_AFF_BLOB: ** No-op. pRec is unchanged. */ static void applyAffinity( @@ -66669,22 +78226,28 @@ static void applyAffinity( char affinity, /* The affinity to be applied */ u8 enc /* Use this text encoding */ ){ - if( affinity==SQLITE_AFF_TEXT ){ - /* Only attempt the conversion to TEXT if there is an integer or real - ** representation (blob and NULL do not get converted) but no string - ** representation. - */ - if( 0==(pRec->flags&MEM_Str) && (pRec->flags&(MEM_Real|MEM_Int)) ){ - sqlite3VdbeMemStringify(pRec, enc); - } - pRec->flags &= ~(MEM_Real|MEM_Int); - }else if( affinity!=SQLITE_AFF_NONE ){ + if( affinity>=SQLITE_AFF_NUMERIC ){ assert( affinity==SQLITE_AFF_INTEGER || affinity==SQLITE_AFF_REAL || affinity==SQLITE_AFF_NUMERIC ); - applyNumericAffinity(pRec); - if( pRec->flags & MEM_Real ){ - sqlite3VdbeIntegerAffinity(pRec); + if( (pRec->flags & MEM_Int)==0 ){ /*OPTIMIZATION-IF-FALSE*/ + if( (pRec->flags & MEM_Real)==0 ){ + if( pRec->flags & MEM_Str ) applyNumericAffinity(pRec,1); + }else{ + sqlite3VdbeIntegerAffinity(pRec); + } } + }else if( affinity==SQLITE_AFF_TEXT ){ + /* Only attempt the conversion to TEXT if there is an integer or real + ** representation (blob and NULL do not get converted) but no string + ** representation. It would be harmless to repeat the conversion if + ** there is already a string rep, but it is pointless to waste those + ** CPU cycles. */ + if( 0==(pRec->flags&MEM_Str) ){ /*OPTIMIZATION-IF-FALSE*/ + if( (pRec->flags&(MEM_Real|MEM_Int)) ){ + sqlite3VdbeMemStringify(pRec, enc, 1); + } + } + pRec->flags &= ~(MEM_Real|MEM_Int); } } @@ -66695,12 +78258,13 @@ static void applyAffinity( ** loss of information and return the revised type of the argument. */ SQLITE_API int sqlite3_value_numeric_type(sqlite3_value *pVal){ - Mem *pMem = (Mem*)pVal; - if( pMem->type==SQLITE_TEXT ){ - applyNumericAffinity(pMem); - sqlite3VdbeMemStoreType(pMem); + int eType = sqlite3_value_type(pVal); + if( eType==SQLITE_TEXT ){ + Mem *pMem = (Mem*)pVal; + applyNumericAffinity(pMem, 0); + eType = sqlite3_value_type(pVal); } - return pMem->type; + return eType; } /* @@ -66715,6 +78279,41 @@ SQLITE_PRIVATE void sqlite3ValueApplyAffinity( applyAffinity((Mem *)pVal, affinity, enc); } +/* +** pMem currently only holds a string type (or maybe a BLOB that we can +** interpret as a string if we want to). Compute its corresponding +** numeric type, if has one. Set the pMem->u.r and pMem->u.i fields +** accordingly. +*/ +static u16 SQLITE_NOINLINE computeNumericType(Mem *pMem){ + assert( (pMem->flags & (MEM_Int|MEM_Real))==0 ); + assert( (pMem->flags & (MEM_Str|MEM_Blob))!=0 ); + if( sqlite3AtoF(pMem->z, &pMem->u.r, pMem->n, pMem->enc)==0 ){ + return 0; + } + if( sqlite3Atoi64(pMem->z, &pMem->u.i, pMem->n, pMem->enc)==SQLITE_OK ){ + return MEM_Int; + } + return MEM_Real; +} + +/* +** Return the numeric type for pMem, either MEM_Int or MEM_Real or both or +** none. +** +** Unlike applyNumericAffinity(), this routine does not modify pMem->flags. +** But it does set pMem->u.r and pMem->u.i appropriately. +*/ +static u16 numericType(Mem *pMem){ + if( pMem->flags & (MEM_Int|MEM_Real) ){ + return pMem->flags & (MEM_Int|MEM_Real); + } + if( pMem->flags & (MEM_Str|MEM_Blob) ){ + return computeNumericType(pMem); + } + return 0; +} + #ifdef SQLITE_DEBUG /* ** Write a nice string representation of the contents of cell pMem @@ -66803,7 +78402,7 @@ SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){ ** Print the value of a register for tracing purposes: */ static void memTracePrint(Mem *p){ - if( p->flags & MEM_Invalid ){ + if( p->flags & MEM_Undefined ){ printf(" undefined"); }else if( p->flags & MEM_Null ){ printf(" NULL"); @@ -66813,7 +78412,7 @@ static void memTracePrint(Mem *p){ printf(" i:%lld", p->u.i); #ifndef SQLITE_OMIT_FLOATING_POINT }else if( p->flags & MEM_Real ){ - printf(" r:%g", p->r); + printf(" r:%g", p->u.r); #endif }else if( p->flags & MEM_RowSet ){ printf(" (rowset)"); @@ -66822,6 +78421,7 @@ static void memTracePrint(Mem *p){ sqlite3VdbeMemPrettyPrint(p, zBuf); printf(" %s", zBuf); } + if( p->flags & MEM_Subtype ) printf(" subtype=0x%02x", p->eSubtype); } static void registerTrace(int iReg, Mem *p){ printf("REG[%d] = ", iReg); @@ -66860,8 +78460,8 @@ static void registerTrace(int iReg, Mem *p){ ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. */ -#ifndef _HWTIME_H_ -#define _HWTIME_H_ +#ifndef SQLITE_HWTIME_H +#define SQLITE_HWTIME_H /* ** The following routine only works on pentium-class (or newer) processors. @@ -66929,27 +78529,13 @@ SQLITE_PRIVATE sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } #endif -#endif /* !defined(_HWTIME_H_) */ +#endif /* !defined(SQLITE_HWTIME_H) */ /************** End of hwtime.h **********************************************/ /************** Continuing where we left off in vdbe.c ***********************/ #endif -/* -** The CHECK_FOR_INTERRUPT macro defined here looks to see if the -** sqlite3_interrupt() routine has been called. If it has been, then -** processing of the VDBE program is interrupted. -** -** This macro added to every instruction that does a jump in order to -** implement a loop. This test used to be on every single instruction, -** but that meant we more testing than we needed. By only testing the -** flag on jump instructions, we get a (small) speed improvement. -*/ -#define CHECK_FOR_INTERRUPT \ - if( db->u1.isInterrupted ) goto abort_due_to_interrupt; - - #ifndef NDEBUG /* ** This function is only called from within an assert() expression. It @@ -66970,49 +78556,50 @@ static int checkSavepointCount(sqlite3 *db){ } #endif +/* +** Return the register of pOp->p2 after first preparing it to be +** overwritten with an integer value. +*/ +static SQLITE_NOINLINE Mem *out2PrereleaseWithClear(Mem *pOut){ + sqlite3VdbeMemSetNull(pOut); + pOut->flags = MEM_Int; + return pOut; +} +static Mem *out2Prerelease(Vdbe *p, VdbeOp *pOp){ + Mem *pOut; + assert( pOp->p2>0 ); + assert( pOp->p2<=(p->nMem+1 - p->nCursor) ); + pOut = &p->aMem[pOp->p2]; + memAboutToChange(p, pOut); + if( VdbeMemDynamic(pOut) ){ /*OPTIMIZATION-IF-FALSE*/ + return out2PrereleaseWithClear(pOut); + }else{ + pOut->flags = MEM_Int; + return pOut; + } +} + /* -** Execute as much of a VDBE program as we can then return. -** -** sqlite3VdbeMakeReady() must be called before this routine in order to -** close the program with a final OP_Halt and to set up the callbacks -** and the error message pointer. -** -** Whenever a row or result data is available, this routine will either -** invoke the result callback (if there is one) or return with -** SQLITE_ROW. -** -** If an attempt is made to open a locked database, then this routine -** will either invoke the busy callback (if there is one) or it will -** return SQLITE_BUSY. -** -** If an error occurs, an error message is written to memory obtained -** from sqlite3_malloc() and p->zErrMsg is made to point to that memory. -** The error code is stored in p->rc and this routine returns SQLITE_ERROR. -** -** If the callback ever returns non-zero, then the program exits -** immediately. There will be no error message but the p->rc field is -** set to SQLITE_ABORT and this routine will return SQLITE_ERROR. -** -** A memory allocation error causes p->rc to be set to SQLITE_NOMEM and this -** routine to return SQLITE_ERROR. -** -** Other fatal errors return SQLITE_ERROR. -** -** After this routine has finished, sqlite3VdbeFinalize() should be -** used to clean up the mess that was left behind. +** Execute as much of a VDBE program as we can. +** This is the core of sqlite3_step(). */ SQLITE_PRIVATE int sqlite3VdbeExec( Vdbe *p /* The VDBE */ ){ - int pc=0; /* The program counter */ Op *aOp = p->aOp; /* Copy of p->aOp */ - Op *pOp; /* Current operation */ + Op *pOp = aOp; /* Current operation */ +#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) + Op *pOrigOp; /* Value of pOp at the top of the loop */ +#endif +#ifdef SQLITE_DEBUG + int nExtraDelete = 0; /* Verifies FORDELETE and AUXDELETE flags */ +#endif int rc = SQLITE_OK; /* Value to return */ sqlite3 *db = p->db; /* The database */ u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */ u8 encoding = ENC(db); /* The database encoding */ - int iCompare = 0; /* Result of last OP_Compare operation */ + int iCompare = 0; /* Result of last comparison */ unsigned nVmStep = 0; /* Number of virtual machine steps */ #ifndef SQLITE_OMIT_PROGRESS_CALLBACK unsigned nProgressLimit = 0;/* Invoke xProgress() when nVmStep reaches this */ @@ -67022,11 +78609,8 @@ SQLITE_PRIVATE int sqlite3VdbeExec( Mem *pIn2 = 0; /* 2nd input operand */ Mem *pIn3 = 0; /* 3rd input operand */ Mem *pOut = 0; /* Output operand */ - int *aPermute = 0; /* Permutation of columns for OP_Compare */ - i64 lastRowid = db->lastRowid; /* Saved value of the last insert ROWID */ #ifdef VDBE_PROFILE u64 start; /* CPU clock count at start of opcode */ - int origPc; /* Program counter at start of opcode */ #endif /*** INSERT STACK UNION HERE ***/ @@ -67037,24 +78621,19 @@ SQLITE_PRIVATE int sqlite3VdbeExec( ** sqlite3_column_text16() failed. */ goto no_mem; } - assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY ); + assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY ); assert( p->bIsReader || p->readOnly!=0 ); - p->rc = SQLITE_OK; p->iCurrentTime = 0; assert( p->explain==0 ); p->pResultSet = 0; db->busyHandler.nBusy = 0; - CHECK_FOR_INTERRUPT; + if( db->u1.isInterrupted ) goto abort_due_to_interrupt; sqlite3VdbeIOTraceSql(p); #ifndef SQLITE_OMIT_PROGRESS_CALLBACK if( db->xProgress ){ + u32 iPrior = p->aCounter[SQLITE_STMTSTATUS_VM_STEP]; assert( 0 < db->nProgressOps ); - nProgressLimit = (unsigned)p->aCounter[SQLITE_STMTSTATUS_VM_STEP]; - if( nProgressLimit==0 ){ - nProgressLimit = db->nProgressOps; - }else{ - nProgressLimit %= (unsigned)db->nProgressOps; - } + nProgressLimit = db->nProgressOps - (iPrior % db->nProgressOps); } #endif #ifdef SQLITE_DEBUG @@ -67084,21 +78663,25 @@ SQLITE_PRIVATE int sqlite3VdbeExec( } sqlite3EndBenignMalloc(); #endif - for(pc=p->pc; rc==SQLITE_OK; pc++){ - assert( pc>=0 && pcnOp ); - if( db->mallocFailed ) goto no_mem; + for(pOp=&aOp[p->pc]; 1; pOp++){ + /* Errors are detected by individual opcodes, with an immediate + ** jumps to abort_due_to_error. */ + assert( rc==SQLITE_OK ); + + assert( pOp>=aOp && pOp<&aOp[p->nOp]); #ifdef VDBE_PROFILE - origPc = pc; start = sqlite3Hwtime(); #endif nVmStep++; - pOp = &aOp[pc]; +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + if( p->anExec ) p->anExec[(int)(pOp-aOp)]++; +#endif /* Only allow tracing if SQLITE_DEBUG is defined. */ #ifdef SQLITE_DEBUG if( db->flags & SQLITE_VdbeTrace ){ - sqlite3VdbePrintOp(stdout, pc, pOp); + sqlite3VdbePrintOp(stdout, (int)(pOp - aOp), pOp); } #endif @@ -67115,52 +78698,46 @@ SQLITE_PRIVATE int sqlite3VdbeExec( } #endif - /* On any opcode with the "out2-prerelease" tag, free any - ** external allocations out of mem[p2] and set mem[p2] to be - ** an undefined integer. Opcodes will either fill in the integer - ** value or convert mem[p2] to a different type. - */ - assert( pOp->opflags==sqlite3OpcodeProperty[pOp->opcode] ); - if( pOp->opflags & OPFLG_OUT2_PRERELEASE ){ - assert( pOp->p2>0 ); - assert( pOp->p2<=(p->nMem-p->nCursor) ); - pOut = &aMem[pOp->p2]; - memAboutToChange(p, pOut); - VdbeMemRelease(pOut); - pOut->flags = MEM_Int; - } - /* Sanity checking on other operands */ #ifdef SQLITE_DEBUG - if( (pOp->opflags & OPFLG_IN1)!=0 ){ - assert( pOp->p1>0 ); - assert( pOp->p1<=(p->nMem-p->nCursor) ); - assert( memIsValid(&aMem[pOp->p1]) ); - REGISTER_TRACE(pOp->p1, &aMem[pOp->p1]); - } - if( (pOp->opflags & OPFLG_IN2)!=0 ){ - assert( pOp->p2>0 ); - assert( pOp->p2<=(p->nMem-p->nCursor) ); - assert( memIsValid(&aMem[pOp->p2]) ); - REGISTER_TRACE(pOp->p2, &aMem[pOp->p2]); - } - if( (pOp->opflags & OPFLG_IN3)!=0 ){ - assert( pOp->p3>0 ); - assert( pOp->p3<=(p->nMem-p->nCursor) ); - assert( memIsValid(&aMem[pOp->p3]) ); - REGISTER_TRACE(pOp->p3, &aMem[pOp->p3]); - } - if( (pOp->opflags & OPFLG_OUT2)!=0 ){ - assert( pOp->p2>0 ); - assert( pOp->p2<=(p->nMem-p->nCursor) ); - memAboutToChange(p, &aMem[pOp->p2]); - } - if( (pOp->opflags & OPFLG_OUT3)!=0 ){ - assert( pOp->p3>0 ); - assert( pOp->p3<=(p->nMem-p->nCursor) ); - memAboutToChange(p, &aMem[pOp->p3]); + { + u8 opProperty = sqlite3OpcodeProperty[pOp->opcode]; + if( (opProperty & OPFLG_IN1)!=0 ){ + assert( pOp->p1>0 ); + assert( pOp->p1<=(p->nMem+1 - p->nCursor) ); + assert( memIsValid(&aMem[pOp->p1]) ); + assert( sqlite3VdbeCheckMemInvariants(&aMem[pOp->p1]) ); + REGISTER_TRACE(pOp->p1, &aMem[pOp->p1]); + } + if( (opProperty & OPFLG_IN2)!=0 ){ + assert( pOp->p2>0 ); + assert( pOp->p2<=(p->nMem+1 - p->nCursor) ); + assert( memIsValid(&aMem[pOp->p2]) ); + assert( sqlite3VdbeCheckMemInvariants(&aMem[pOp->p2]) ); + REGISTER_TRACE(pOp->p2, &aMem[pOp->p2]); + } + if( (opProperty & OPFLG_IN3)!=0 ){ + assert( pOp->p3>0 ); + assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); + assert( memIsValid(&aMem[pOp->p3]) ); + assert( sqlite3VdbeCheckMemInvariants(&aMem[pOp->p3]) ); + REGISTER_TRACE(pOp->p3, &aMem[pOp->p3]); + } + if( (opProperty & OPFLG_OUT2)!=0 ){ + assert( pOp->p2>0 ); + assert( pOp->p2<=(p->nMem+1 - p->nCursor) ); + memAboutToChange(p, &aMem[pOp->p2]); + } + if( (opProperty & OPFLG_OUT3)!=0 ){ + assert( pOp->p3>0 ); + assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); + memAboutToChange(p, &aMem[pOp->p3]); + } } #endif +#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) + pOrigOp = pOp; +#endif switch( pOp->opcode ){ @@ -67184,7 +78761,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec( ** ** Other keywords in the comment that follows each case are used to ** construct the OPFLG_INITIALIZER value that initializes opcodeProperty[]. -** Keywords include: in1, in2, in3, out2_prerelease, out2, out3. See +** Keywords include: in1, in2, in3, out2, out3. See ** the mkopcodeh.awk script for additional information. ** ** Documentation about VDBE opcodes is generated by scanning this file @@ -67205,9 +78782,15 @@ SQLITE_PRIVATE int sqlite3VdbeExec( ** The next instruction executed will be ** the one at index P2 from the beginning of ** the program. +** +** The P1 parameter is not actually used by this opcode. However, it +** is sometimes set to 1 instead of 0 as a hint to the command-line shell +** that this Goto is the bottom of a loop and that the lines from P2 down +** to the current line should be indented for EXPLAIN output. */ case OP_Goto: { /* jump */ - pc = pOp->p2 - 1; +jump_to_p2_and_check_for_interrupt: + pOp = &aOp[pOp->p2 - 1]; /* Opcodes that are used as the bottom of a loop (OP_Next, OP_Prev, ** OP_VNext, OP_RowSetNext, or OP_SorterNext) all jump here upon @@ -67220,7 +78803,7 @@ case OP_Goto: { /* jump */ ** checks on every opcode. This helps sqlite3_step() to run about 1.5% ** faster according to "valgrind --tool=cachegrind" */ check_for_interrupt: - CHECK_FOR_INTERRUPT; + if( db->u1.isInterrupted ) goto abort_due_to_interrupt; #ifndef SQLITE_OMIT_PROGRESS_CALLBACK /* Call the progress callback if it is configured and the required number ** of VDBE ops have been executed (either since this invocation of @@ -67233,7 +78816,7 @@ check_for_interrupt: nProgressLimit = nVmStep + db->nProgressOps - (nVmStep%db->nProgressOps); if( db->xProgress(db->pProgressArg) ){ rc = SQLITE_INTERRUPT; - goto vdbe_error_halt; + goto abort_due_to_error; } } #endif @@ -67247,46 +78830,105 @@ check_for_interrupt: ** and then jump to address P2. */ case OP_Gosub: { /* jump */ - assert( pOp->p1>0 && pOp->p1<=(p->nMem-p->nCursor) ); + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); pIn1 = &aMem[pOp->p1]; - assert( (pIn1->flags & MEM_Dyn)==0 ); + assert( VdbeMemDynamic(pIn1)==0 ); memAboutToChange(p, pIn1); pIn1->flags = MEM_Int; - pIn1->u.i = pc; + pIn1->u.i = (int)(pOp-aOp); REGISTER_TRACE(pOp->p1, pIn1); - pc = pOp->p2 - 1; + + /* Most jump operations do a goto to this spot in order to update + ** the pOp pointer. */ +jump_to_p2: + pOp = &aOp[pOp->p2 - 1]; break; } /* Opcode: Return P1 * * * * ** -** Jump to the next instruction after the address in register P1. +** Jump to the next instruction after the address in register P1. After +** the jump, register P1 becomes undefined. */ case OP_Return: { /* in1 */ pIn1 = &aMem[pOp->p1]; - assert( pIn1->flags & MEM_Int ); - pc = (int)pIn1->u.i; + assert( pIn1->flags==MEM_Int ); + pOp = &aOp[pIn1->u.i]; + pIn1->flags = MEM_Undefined; break; } -/* Opcode: Yield P1 * * * * +/* Opcode: InitCoroutine P1 P2 P3 * * ** -** Swap the program counter with the value in register P1. +** Set up register P1 so that it will Yield to the coroutine +** located at address P3. +** +** If P2!=0 then the coroutine implementation immediately follows +** this opcode. So jump over the coroutine implementation to +** address P2. +** +** See also: EndCoroutine */ -case OP_Yield: { /* in1 */ +case OP_InitCoroutine: { /* jump */ + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); + assert( pOp->p2>=0 && pOp->p2nOp ); + assert( pOp->p3>=0 && pOp->p3nOp ); + pOut = &aMem[pOp->p1]; + assert( !VdbeMemDynamic(pOut) ); + pOut->u.i = pOp->p3 - 1; + pOut->flags = MEM_Int; + if( pOp->p2 ) goto jump_to_p2; + break; +} + +/* Opcode: EndCoroutine P1 * * * * +** +** The instruction at the address in register P1 is a Yield. +** Jump to the P2 parameter of that Yield. +** After the jump, register P1 becomes undefined. +** +** See also: InitCoroutine +*/ +case OP_EndCoroutine: { /* in1 */ + VdbeOp *pCaller; + pIn1 = &aMem[pOp->p1]; + assert( pIn1->flags==MEM_Int ); + assert( pIn1->u.i>=0 && pIn1->u.inOp ); + pCaller = &aOp[pIn1->u.i]; + assert( pCaller->opcode==OP_Yield ); + assert( pCaller->p2>=0 && pCaller->p2nOp ); + pOp = &aOp[pCaller->p2 - 1]; + pIn1->flags = MEM_Undefined; + break; +} + +/* Opcode: Yield P1 P2 * * * +** +** Swap the program counter with the value in register P1. This +** has the effect of yielding to a coroutine. +** +** If the coroutine that is launched by this instruction ends with +** Yield or Return then continue to the next instruction. But if +** the coroutine launched by this instruction ends with +** EndCoroutine, then jump to P2 rather than continuing with the +** next instruction. +** +** See also: InitCoroutine +*/ +case OP_Yield: { /* in1, jump */ int pcDest; pIn1 = &aMem[pOp->p1]; - assert( (pIn1->flags & MEM_Dyn)==0 ); + assert( VdbeMemDynamic(pIn1)==0 ); pIn1->flags = MEM_Int; pcDest = (int)pIn1->u.i; - pIn1->u.i = pc; + pIn1->u.i = (int)(pOp - aOp); REGISTER_TRACE(pOp->p1, pIn1); - pc = pcDest; + pOp = &aOp[pcDest]; break; } /* Opcode: HaltIfNull P1 P2 P3 P4 P5 -** Synopsis: if r[P3] null then halt +** Synopsis: if r[P3]=null halt ** ** Check the value in register P3. If it is NULL then Halt using ** parameter P1, P2, and P4 as if this were a Halt instruction. If the @@ -67330,61 +78972,55 @@ case OP_HaltIfNull: { /* in3 */ ** is the same as executing Halt. */ case OP_Halt: { - const char *zType; - const char *zLogFmt; + VdbeFrame *pFrame; + int pcx; + pcx = (int)(pOp - aOp); if( pOp->p1==SQLITE_OK && p->pFrame ){ /* Halt the sub-program. Return control to the parent frame. */ - VdbeFrame *pFrame = p->pFrame; + pFrame = p->pFrame; p->pFrame = pFrame->pParent; p->nFrame--; sqlite3VdbeSetChanges(db, p->nChange); - pc = sqlite3VdbeFrameRestore(pFrame); - lastRowid = db->lastRowid; + pcx = sqlite3VdbeFrameRestore(pFrame); if( pOp->p2==OE_Ignore ){ - /* Instruction pc is the OP_Program that invoked the sub-program + /* Instruction pcx is the OP_Program that invoked the sub-program ** currently being halted. If the p2 instruction of this OP_Halt ** instruction is set to OE_Ignore, then the sub-program is throwing ** an IGNORE exception. In this case jump to the address specified ** as the p2 of the calling OP_Program. */ - pc = p->aOp[pc].p2-1; + pcx = p->aOp[pcx].p2-1; } aOp = p->aOp; aMem = p->aMem; + pOp = &aOp[pcx]; break; } p->rc = pOp->p1; p->errorAction = (u8)pOp->p2; - p->pc = pc; + p->pc = pcx; + assert( pOp->p5<=4 ); if( p->rc ){ if( pOp->p5 ){ static const char * const azType[] = { "NOT NULL", "UNIQUE", "CHECK", "FOREIGN KEY" }; - assert( pOp->p5>=1 && pOp->p5<=4 ); testcase( pOp->p5==1 ); testcase( pOp->p5==2 ); testcase( pOp->p5==3 ); testcase( pOp->p5==4 ); - zType = azType[pOp->p5-1]; + sqlite3VdbeError(p, "%s constraint failed", azType[pOp->p5-1]); + if( pOp->p4.z ){ + p->zErrMsg = sqlite3MPrintf(db, "%z: %s", p->zErrMsg, pOp->p4.z); + } }else{ - zType = 0; + sqlite3VdbeError(p, "%s", pOp->p4.z); } - assert( zType!=0 || pOp->p4.z!=0 ); - zLogFmt = "abort at %d in [%s]: %s"; - if( zType && pOp->p4.z ){ - sqlite3SetString(&p->zErrMsg, db, "%s constraint failed: %s", - zType, pOp->p4.z); - }else if( pOp->p4.z ){ - sqlite3SetString(&p->zErrMsg, db, "%s", pOp->p4.z); - }else{ - sqlite3SetString(&p->zErrMsg, db, "%s constraint failed", zType); - } - sqlite3_log(pOp->p1, zLogFmt, pc, p->zSql, p->zErrMsg); + sqlite3_log(pOp->p1, "abort at %d in [%s]: %s", pcx, p->zSql, p->zErrMsg); } rc = sqlite3VdbeHalt(p); assert( rc==SQLITE_BUSY || rc==SQLITE_OK || rc==SQLITE_ERROR ); if( rc==SQLITE_BUSY ){ - p->rc = rc = SQLITE_BUSY; + p->rc = SQLITE_BUSY; }else{ assert( rc==SQLITE_OK || (p->rc&0xff)==SQLITE_CONSTRAINT ); assert( rc==SQLITE_OK || db->nDeferredCons>0 || db->nDeferredImmCons>0 ); @@ -67398,7 +79034,8 @@ case OP_Halt: { ** ** The 32-bit integer value P1 is written into register P2. */ -case OP_Integer: { /* out2-prerelease */ +case OP_Integer: { /* out2 */ + pOut = out2Prerelease(p, pOp); pOut->u.i = pOp->p1; break; } @@ -67409,7 +79046,8 @@ case OP_Integer: { /* out2-prerelease */ ** P4 is a pointer to a 64-bit integer value. ** Write that value into register P2. */ -case OP_Int64: { /* out2-prerelease */ +case OP_Int64: { /* out2 */ + pOut = out2Prerelease(p, pOp); assert( pOp->p4.pI64!=0 ); pOut->u.i = *pOp->p4.pI64; break; @@ -67422,10 +79060,11 @@ case OP_Int64: { /* out2-prerelease */ ** P4 is a pointer to a 64-bit floating point value. ** Write that value into register P2. */ -case OP_Real: { /* same as TK_FLOAT, out2-prerelease */ +case OP_Real: { /* same as TK_FLOAT, out2 */ + pOut = out2Prerelease(p, pOp); pOut->flags = MEM_Real; assert( !sqlite3IsNaN(*pOp->p4.pReal) ); - pOut->r = *pOp->p4.pReal; + pOut->u.r = *pOp->p4.pReal; break; } #endif @@ -67434,23 +79073,25 @@ case OP_Real: { /* same as TK_FLOAT, out2-prerelease */ ** Synopsis: r[P2]='P4' ** ** P4 points to a nul terminated UTF-8 string. This opcode is transformed -** into an OP_String before it is executed for the first time. +** into a String opcode before it is executed for the first time. During +** this transformation, the length of string P4 is computed and stored +** as the P1 parameter. */ -case OP_String8: { /* same as TK_STRING, out2-prerelease */ +case OP_String8: { /* same as TK_STRING, out2 */ assert( pOp->p4.z!=0 ); + pOut = out2Prerelease(p, pOp); pOp->opcode = OP_String; pOp->p1 = sqlite3Strlen30(pOp->p4.z); #ifndef SQLITE_OMIT_UTF16 if( encoding!=SQLITE_UTF8 ){ rc = sqlite3VdbeMemSetStr(pOut, pOp->p4.z, -1, SQLITE_UTF8, SQLITE_STATIC); - if( rc==SQLITE_TOOBIG ) goto too_big; + assert( rc==SQLITE_OK || rc==SQLITE_TOOBIG ); if( SQLITE_OK!=sqlite3VdbeChangeEncoding(pOut, encoding) ) goto no_mem; - assert( pOut->zMalloc==pOut->z ); - assert( pOut->flags & MEM_Dyn ); - pOut->zMalloc = 0; + assert( pOut->szMalloc>0 && pOut->zMalloc==pOut->z ); + assert( VdbeMemDynamic(pOut)==0 ); + pOut->szMalloc = 0; pOut->flags |= MEM_Static; - pOut->flags &= ~MEM_Dyn; if( pOp->p4type==P4_DYNAMIC ){ sqlite3DbFree(db, pOp->p4.z); } @@ -67458,30 +79099,48 @@ case OP_String8: { /* same as TK_STRING, out2-prerelease */ pOp->p4.z = pOut->z; pOp->p1 = pOut->n; } + testcase( rc==SQLITE_TOOBIG ); #endif if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } + assert( rc==SQLITE_OK ); /* Fall through to the next case, OP_String */ } -/* Opcode: String P1 P2 * P4 * +/* Opcode: String P1 P2 P3 P4 P5 ** Synopsis: r[P2]='P4' (len=P1) ** ** The string value P4 of length P1 (bytes) is stored in register P2. +** +** If P3 is not zero and the content of register P3 is equal to P5, then +** the datatype of the register P2 is converted to BLOB. The content is +** the same sequence of bytes, it is merely interpreted as a BLOB instead +** of a string, as if it had been CAST. In other words: +** +** if( P3!=0 and reg[P3]==P5 ) reg[P2] := CAST(reg[P2] as BLOB) */ -case OP_String: { /* out2-prerelease */ +case OP_String: { /* out2 */ assert( pOp->p4.z!=0 ); + pOut = out2Prerelease(p, pOp); pOut->flags = MEM_Str|MEM_Static|MEM_Term; pOut->z = pOp->p4.z; pOut->n = pOp->p1; pOut->enc = encoding; UPDATE_MAX_BLOBSIZE(pOut); +#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS + if( pOp->p3>0 ){ + assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); + pIn3 = &aMem[pOp->p3]; + assert( pIn3->flags & MEM_Int ); + if( pIn3->u.i==pOp->p5 ) pOut->flags = MEM_Blob|MEM_Static|MEM_Term; + } +#endif break; } /* Opcode: Null P1 P2 P3 * * -** Synopsis: r[P2..P3]=NULL +** Synopsis: r[P2..P3]=NULL ** ** Write a NULL into registers P2. If P3 greater than P2, then also write ** NULL into register P3 and every register in between P2 and P3. If P3 @@ -67492,31 +79151,49 @@ case OP_String: { /* out2-prerelease */ ** NULL values will not compare equal even if SQLITE_NULLEQ is set on ** OP_Ne or OP_Eq. */ -case OP_Null: { /* out2-prerelease */ +case OP_Null: { /* out2 */ int cnt; u16 nullFlag; + pOut = out2Prerelease(p, pOp); cnt = pOp->p3-pOp->p2; - assert( pOp->p3<=(p->nMem-p->nCursor) ); + assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); pOut->flags = nullFlag = pOp->p1 ? (MEM_Null|MEM_Cleared) : MEM_Null; + pOut->n = 0; while( cnt>0 ){ pOut++; memAboutToChange(p, pOut); - VdbeMemRelease(pOut); + sqlite3VdbeMemSetNull(pOut); pOut->flags = nullFlag; + pOut->n = 0; cnt--; } break; } +/* Opcode: SoftNull P1 * * * * +** Synopsis: r[P1]=NULL +** +** Set register P1 to have the value NULL as seen by the OP_MakeRecord +** instruction, but do not free any string or blob memory associated with +** the register, so that if the value was a string or blob that was +** previously copied using OP_SCopy, the copies will continue to be valid. +*/ +case OP_SoftNull: { + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); + pOut = &aMem[pOp->p1]; + pOut->flags = (pOut->flags|MEM_Null)&~MEM_Undefined; + break; +} -/* Opcode: Blob P1 P2 * P4 +/* Opcode: Blob P1 P2 * P4 * ** Synopsis: r[P2]=P4 (len=P1) ** ** P4 points to a blob of data P1 bytes long. Store this ** blob in register P2. */ -case OP_Blob: { /* out2-prerelease */ +case OP_Blob: { /* out2 */ assert( pOp->p1 <= SQLITE_MAX_LENGTH ); + pOut = out2Prerelease(p, pOp); sqlite3VdbeMemSetStr(pOut, pOp->p4.z, pOp->p1, 0, 0); pOut->enc = encoding; UPDATE_MAX_BLOBSIZE(pOut); @@ -67528,33 +79205,34 @@ case OP_Blob: { /* out2-prerelease */ ** ** Transfer the values of bound parameter P1 into register P2 ** -** If the parameter is named, then its name appears in P4 and P3==1. +** If the parameter is named, then its name appears in P4. ** The P4 value is used by sqlite3_bind_parameter_name(). */ -case OP_Variable: { /* out2-prerelease */ +case OP_Variable: { /* out2 */ Mem *pVar; /* Value being transferred */ assert( pOp->p1>0 && pOp->p1<=p->nVar ); - assert( pOp->p4.z==0 || pOp->p4.z==p->azVar[pOp->p1-1] ); + assert( pOp->p4.z==0 || pOp->p4.z==sqlite3VListNumToName(p->pVList,pOp->p1) ); pVar = &p->aVar[pOp->p1 - 1]; if( sqlite3VdbeMemTooBig(pVar) ){ goto too_big; } + pOut = &aMem[pOp->p2]; sqlite3VdbeMemShallowCopy(pOut, pVar, MEM_Static); UPDATE_MAX_BLOBSIZE(pOut); break; } /* Opcode: Move P1 P2 P3 * * -** Synopsis: r[P2@P3]=r[P1@P3] +** Synopsis: r[P2@P3]=r[P1@P3] ** -** Move the values in register P1..P1+P3 over into -** registers P2..P2+P3. Registers P1..P1+P3 are +** Move the P3 values in register P1..P1+P3-1 over into +** registers P2..P2+P3-1. Registers P1..P1+P3-1 are ** left holding a NULL. It is an error for register ranges -** P1..P1+P3 and P2..P2+P3 to overlap. +** P1..P1+P3-1 and P2..P2+P3-1 to overlap. It is an error +** for P3 to be less than 1. */ case OP_Move: { - char *zMalloc; /* Holding variable for allocated memory */ int n; /* Number of registers left to copy */ int p1; /* Register to copy from */ int p2; /* Register to copy to */ @@ -67562,29 +79240,27 @@ case OP_Move: { n = pOp->p3; p1 = pOp->p1; p2 = pOp->p2; - assert( n>=0 && p1>0 && p2>0 ); + assert( n>0 && p1>0 && p2>0 ); assert( p1+n<=p2 || p2+n<=p1 ); pIn1 = &aMem[p1]; pOut = &aMem[p2]; do{ - assert( pOut<=&aMem[(p->nMem-p->nCursor)] ); - assert( pIn1<=&aMem[(p->nMem-p->nCursor)] ); + assert( pOut<=&aMem[(p->nMem+1 - p->nCursor)] ); + assert( pIn1<=&aMem[(p->nMem+1 - p->nCursor)] ); assert( memIsValid(pIn1) ); memAboutToChange(p, pOut); - zMalloc = pOut->zMalloc; - pOut->zMalloc = 0; sqlite3VdbeMemMove(pOut, pIn1); #ifdef SQLITE_DEBUG - if( pOut->pScopyFrom>=&aMem[p1] && pOut->pScopyFrom<&aMem[p1+pOp->p3] ){ - pOut->pScopyFrom += p1 - pOp->p2; + if( pOut->pScopyFrom>=&aMem[p1] && pOut->pScopyFrompScopyFrom += pOp->p2 - p1; } #endif - pIn1->zMalloc = zMalloc; + Deephemeralize(pOut); REGISTER_TRACE(p2++, pOut); pIn1++; pOut++; - }while( n-- ); + }while( --n ); break; } @@ -67641,21 +79317,37 @@ case OP_SCopy: { /* out2 */ break; } +/* Opcode: IntCopy P1 P2 * * * +** Synopsis: r[P2]=r[P1] +** +** Transfer the integer value held in register P1 into register P2. +** +** This is an optimized version of SCopy that works only for integer +** values. +*/ +case OP_IntCopy: { /* out2 */ + pIn1 = &aMem[pOp->p1]; + assert( (pIn1->flags & MEM_Int)!=0 ); + pOut = &aMem[pOp->p2]; + sqlite3VdbeMemSetInt64(pOut, pIn1->u.i); + break; +} + /* Opcode: ResultRow P1 P2 * * * -** Synopsis: output=r[P1@P2] +** Synopsis: output=r[P1@P2] ** ** The registers P1 through P1+P2-1 contain a single row of ** results. This opcode causes the sqlite3_step() call to terminate ** with an SQLITE_ROW return code and it sets up the sqlite3_stmt -** structure to provide access to the top P1 values as the result -** row. +** structure to provide access to the r(P1)..r(P1+P2-1) values as +** the result row. */ case OP_ResultRow: { Mem *pMem; int i; assert( p->nResColumn==pOp->p2 ); assert( pOp->p1>0 ); - assert( pOp->p1+pOp->p2<=(p->nMem-p->nCursor)+1 ); + assert( pOp->p1+pOp->p2<=(p->nMem+1 - p->nCursor)+1 ); #ifndef SQLITE_OMIT_PROGRESS_CALLBACK /* Run the progress counter just before returning. @@ -67665,7 +79357,7 @@ case OP_ResultRow: { && db->xProgress(db->pProgressArg)!=0 ){ rc = SQLITE_INTERRUPT; - goto vdbe_error_halt; + goto abort_due_to_error; } #endif @@ -67675,7 +79367,7 @@ case OP_ResultRow: { if( SQLITE_OK!=(rc = sqlite3VdbeCheckFk(p, 0)) ){ assert( db->flags&SQLITE_CountRows ); assert( p->usesStmtJournal ); - break; + goto abort_due_to_error; } /* If the SQLITE_CountRows flag is set in sqlite3.flags mask, then @@ -67695,9 +79387,7 @@ case OP_ResultRow: { */ assert( p->iStatement==0 || db->flags&SQLITE_CountRows ); rc = sqlite3VdbeCloseStatement(p, SAVEPOINT_RELEASE); - if( NEVER(rc!=SQLITE_OK) ){ - break; - } + assert( rc==SQLITE_OK ); /* Invalidate all ephemeral cursor row caches */ p->cacheCtr = (p->cacheCtr + 2)|1; @@ -67713,14 +79403,17 @@ case OP_ResultRow: { assert( (pMem[i].flags & MEM_Ephem)==0 || (pMem[i].flags & (MEM_Str|MEM_Blob))==0 ); sqlite3VdbeMemNulTerminate(&pMem[i]); - sqlite3VdbeMemStoreType(&pMem[i]); REGISTER_TRACE(pOp->p1+i, &pMem[i]); } if( db->mallocFailed ) goto no_mem; + if( db->mTrace & SQLITE_TRACE_ROW ){ + db->xTrace(SQLITE_TRACE_ROW, db->pTraceArg, p, 0); + } + /* Return SQLITE_ROW */ - p->pc = pc + 1; + p->pc = (int)(pOp - aOp) + 1; rc = SQLITE_ROW; goto vdbe_return; } @@ -67756,10 +79449,10 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ if( nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } - MemSetTypeFlag(pOut, MEM_Str); if( sqlite3VdbeMemGrow(pOut, (int)nByte+2, pOut==pIn2) ){ goto no_mem; } + MemSetTypeFlag(pOut, MEM_Str); if( pOut!=pIn2 ){ memcpy(pOut->z, pIn2->z, pIn2->n); } @@ -67774,14 +79467,14 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ } /* Opcode: Add P1 P2 P3 * * -** Synopsis: r[P3]=r[P1]+r[P2] +** Synopsis: r[P3]=r[P1]+r[P2] ** ** Add the value in register P1 to the value in register P2 ** and store the result in register P3. ** If either input is NULL, the result is NULL. */ /* Opcode: Multiply P1 P2 P3 * * -** Synopsis: r[P3]=r[P1]*r[P2] +** Synopsis: r[P3]=r[P1]*r[P2] ** ** ** Multiply the value in register P1 by the value in register P2 @@ -67789,14 +79482,14 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ ** If either input is NULL, the result is NULL. */ /* Opcode: Subtract P1 P2 P3 * * -** Synopsis: r[P3]=r[P2]-r[P1] +** Synopsis: r[P3]=r[P2]-r[P1] ** ** Subtract the value in register P1 from the value in register P2 ** and store the result in register P3. ** If either input is NULL, the result is NULL. */ /* Opcode: Divide P1 P2 P3 * * -** Synopsis: r[P3]=r[P2]/r[P1] +** Synopsis: r[P3]=r[P2]/r[P1] ** ** Divide the value in register P1 by the value in register P2 ** and store the result in register P3 (P3=P2/P1). If the value in @@ -67804,7 +79497,7 @@ case OP_Concat: { /* same as TK_CONCAT, in1, in2, out3 */ ** NULL, the result is NULL. */ /* Opcode: Remainder P1 P2 P3 * * -** Synopsis: r[P3]=r[P2]%r[P1] +** Synopsis: r[P3]=r[P2]%r[P1] ** ** Compute the remainder after integer register P2 is divided by ** register P1 and store the result in register P3. @@ -67817,20 +79510,22 @@ case OP_Multiply: /* same as TK_STAR, in1, in2, out3 */ case OP_Divide: /* same as TK_SLASH, in1, in2, out3 */ case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */ char bIntint; /* Started out as two integer operands */ - int flags; /* Combined MEM_* flags from both inputs */ + u16 flags; /* Combined MEM_* flags from both inputs */ + u16 type1; /* Numeric type of left operand */ + u16 type2; /* Numeric type of right operand */ i64 iA; /* Integer value of left operand */ i64 iB; /* Integer value of right operand */ double rA; /* Real value of left operand */ double rB; /* Real value of right operand */ pIn1 = &aMem[pOp->p1]; - applyNumericAffinity(pIn1); + type1 = numericType(pIn1); pIn2 = &aMem[pOp->p2]; - applyNumericAffinity(pIn2); + type2 = numericType(pIn2); pOut = &aMem[pOp->p3]; flags = pIn1->flags | pIn2->flags; if( (flags & MEM_Null)!=0 ) goto arithmetic_result_is_null; - if( (pIn1->flags & pIn2->flags & MEM_Int)==MEM_Int ){ + if( (type1 & type2 & MEM_Int)!=0 ){ iA = pIn1->u.i; iB = pIn2->u.i; bIntint = 1; @@ -67884,9 +79579,9 @@ fp_math: if( sqlite3IsNaN(rB) ){ goto arithmetic_result_is_null; } - pOut->r = rB; + pOut->u.r = rB; MemSetTypeFlag(pOut, MEM_Real); - if( (flags & MEM_Real)==0 && !bIntint ){ + if( ((type1|type2)&MEM_Real)==0 && !bIntint ){ sqlite3VdbeIntegerAffinity(pOut); } #endif @@ -67911,7 +79606,7 @@ arithmetic_result_is_null: ** ** The interface used by the implementation of the aforementioned functions ** to retrieve the collation sequence set by this opcode is not available -** publicly, only to user functions defined in func.c. +** publicly. Only built-in functions have access to this feature. */ case OP_CollSeq: { assert( pOp->p4type==P4_COLLSEQ ); @@ -67921,10 +79616,10 @@ case OP_CollSeq: { break; } -/* Opcode: Function P1 P2 P3 P4 P5 +/* Opcode: Function0 P1 P2 P3 P4 P5 ** Synopsis: r[P3]=func(r[P2@P5]) ** -** Invoke a user function (P4 is a pointer to a Function structure that +** Invoke a user function (P4 is a pointer to a FuncDef object that ** defines the function) with P5 arguments taken from register P2 and ** successors. The result of the function is stored in register P3. ** Register P3 must not be one of the function inputs. @@ -67936,115 +79631,118 @@ case OP_CollSeq: { ** sqlite3_set_auxdata() API may be safely retained until the next ** invocation of this opcode. ** -** See also: AggStep and AggFinal +** See also: Function, AggStep, AggFinal */ -case OP_Function: { - int i; - Mem *pArg; - sqlite3_context ctx; - sqlite3_value **apVal; +/* Opcode: Function P1 P2 P3 P4 P5 +** Synopsis: r[P3]=func(r[P2@P5]) +** +** Invoke a user function (P4 is a pointer to an sqlite3_context object that +** contains a pointer to the function to be run) with P5 arguments taken +** from register P2 and successors. The result of the function is stored +** in register P3. Register P3 must not be one of the function inputs. +** +** P1 is a 32-bit bitmask indicating whether or not each argument to the +** function was determined to be constant at compile time. If the first +** argument was constant then bit 0 of P1 is set. This is used to determine +** whether meta data associated with a user function argument using the +** sqlite3_set_auxdata() API may be safely retained until the next +** invocation of this opcode. +** +** SQL functions are initially coded as OP_Function0 with P4 pointing +** to a FuncDef object. But on first evaluation, the P4 operand is +** automatically converted into an sqlite3_context object and the operation +** changed to this OP_Function opcode. In this way, the initialization of +** the sqlite3_context object occurs only once, rather than once for each +** evaluation of the function. +** +** See also: Function0, AggStep, AggFinal +*/ +case OP_Function0: { int n; - - n = pOp->p5; - apVal = p->apArg; - assert( apVal || n==0 ); - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); - pOut = &aMem[pOp->p3]; - memAboutToChange(p, pOut); - - assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem-p->nCursor)+1) ); - assert( pOp->p3p2 || pOp->p3>=pOp->p2+n ); - pArg = &aMem[pOp->p2]; - for(i=0; ip2+i, pArg); - } + sqlite3_context *pCtx; assert( pOp->p4type==P4_FUNCDEF ); - ctx.pFunc = pOp->p4.pFunc; - ctx.iOp = pc; - ctx.pVdbe = p; + n = pOp->p5; + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); + assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem+1 - p->nCursor)+1) ); + assert( pOp->p3p2 || pOp->p3>=pOp->p2+n ); + pCtx = sqlite3DbMallocRawNN(db, sizeof(*pCtx) + (n-1)*sizeof(sqlite3_value*)); + if( pCtx==0 ) goto no_mem; + pCtx->pOut = 0; + pCtx->pFunc = pOp->p4.pFunc; + pCtx->iOp = (int)(pOp - aOp); + pCtx->pVdbe = p; + pCtx->argc = n; + pOp->p4type = P4_FUNCCTX; + pOp->p4.pCtx = pCtx; + pOp->opcode = OP_Function; + /* Fall through into OP_Function */ +} +case OP_Function: { + int i; + sqlite3_context *pCtx; - /* The output cell may already have a buffer allocated. Move - ** the pointer to ctx.s so in case the user-function can use - ** the already allocated buffer instead of allocating a new one. - */ - memcpy(&ctx.s, pOut, sizeof(Mem)); - pOut->flags = MEM_Null; - pOut->xDel = 0; - pOut->zMalloc = 0; - MemSetTypeFlag(&ctx.s, MEM_Null); + assert( pOp->p4type==P4_FUNCCTX ); + pCtx = pOp->p4.pCtx; - ctx.fErrorOrAux = 0; - if( ctx.pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){ - assert( pOp>aOp ); - assert( pOp[-1].p4type==P4_COLLSEQ ); - assert( pOp[-1].opcode==OP_CollSeq ); - ctx.pColl = pOp[-1].p4.pColl; + /* If this function is inside of a trigger, the register array in aMem[] + ** might change from one evaluation to the next. The next block of code + ** checks to see if the register array has changed, and if so it + ** reinitializes the relavant parts of the sqlite3_context object */ + pOut = &aMem[pOp->p3]; + if( pCtx->pOut != pOut ){ + pCtx->pOut = pOut; + for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i]; } - db->lastRowid = lastRowid; - (*ctx.pFunc->xFunc)(&ctx, n, apVal); /* IMP: R-24505-23230 */ - lastRowid = db->lastRowid; - if( db->mallocFailed ){ - /* Even though a malloc() has failed, the implementation of the - ** user function may have called an sqlite3_result_XXX() function - ** to return a value. The following call releases any resources - ** associated with such a value. - */ - sqlite3VdbeMemRelease(&ctx.s); - goto no_mem; + memAboutToChange(p, pCtx->pOut); +#ifdef SQLITE_DEBUG + for(i=0; iargc; i++){ + assert( memIsValid(pCtx->argv[i]) ); + REGISTER_TRACE(pOp->p2+i, pCtx->argv[i]); } +#endif + MemSetTypeFlag(pCtx->pOut, MEM_Null); + pCtx->fErrorOrAux = 0; + (*pCtx->pFunc->xSFunc)(pCtx, pCtx->argc, pCtx->argv);/* IMP: R-24505-23230 */ /* If the function returned an error, throw an exception */ - if( ctx.fErrorOrAux ){ - if( ctx.isError ){ - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&ctx.s)); - rc = ctx.isError; + if( pCtx->fErrorOrAux ){ + if( pCtx->isError ){ + sqlite3VdbeError(p, "%s", sqlite3_value_text(pCtx->pOut)); + rc = pCtx->isError; } - sqlite3VdbeDeleteAuxData(p, pc, pOp->p1); + sqlite3VdbeDeleteAuxData(db, &p->pAuxData, pCtx->iOp, pOp->p1); + if( rc ) goto abort_due_to_error; } /* Copy the result of the function into register P3 */ - sqlite3VdbeChangeEncoding(&ctx.s, encoding); - assert( pOut->flags==MEM_Null ); - memcpy(pOut, &ctx.s, sizeof(Mem)); - if( sqlite3VdbeMemTooBig(pOut) ){ - goto too_big; + if( pOut->flags & (MEM_Str|MEM_Blob) ){ + sqlite3VdbeChangeEncoding(pCtx->pOut, encoding); + if( sqlite3VdbeMemTooBig(pCtx->pOut) ) goto too_big; } -#if 0 - /* The app-defined function has done something that as caused this - ** statement to expire. (Perhaps the function called sqlite3_exec() - ** with a CREATE TABLE statement.) - */ - if( p->expired ) rc = SQLITE_ABORT; -#endif - - REGISTER_TRACE(pOp->p3, pOut); - UPDATE_MAX_BLOBSIZE(pOut); + REGISTER_TRACE(pOp->p3, pCtx->pOut); + UPDATE_MAX_BLOBSIZE(pCtx->pOut); break; } /* Opcode: BitAnd P1 P2 P3 * * -** Synopsis: r[P3]=r[P1]&r[P2] +** Synopsis: r[P3]=r[P1]&r[P2] ** ** Take the bit-wise AND of the values in register P1 and P2 and ** store the result in register P3. ** If either input is NULL, the result is NULL. */ /* Opcode: BitOr P1 P2 P3 * * -** Synopsis: r[P3]=r[P1]|r[P2] +** Synopsis: r[P3]=r[P1]|r[P2] ** ** Take the bit-wise OR of the values in register P1 and P2 and ** store the result in register P3. ** If either input is NULL, the result is NULL. */ /* Opcode: ShiftLeft P1 P2 P3 * * -** Synopsis: r[P3]=r[P2]<>r[P1] +** Synopsis: r[P3]=r[P2]>>r[P1] ** ** Shift the integer value in register P2 to the right by the ** number of bits specified by the integer in register P1. @@ -68112,7 +79810,7 @@ case OP_ShiftRight: { /* same as TK_RSHIFT, in1, in2, out3 */ } /* Opcode: AddImm P1 P2 * * * -** Synopsis: r[P1]=r[P1]+P2 +** Synopsis: r[P1]=r[P1]+P2 ** ** Add the constant P2 to the value in register P1. ** The result is always an integer. @@ -68138,13 +79836,13 @@ case OP_MustBeInt: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; if( (pIn1->flags & MEM_Int)==0 ){ applyAffinity(pIn1, SQLITE_AFF_NUMERIC, encoding); + VdbeBranchTaken((pIn1->flags&MEM_Int)==0, 2); if( (pIn1->flags & MEM_Int)==0 ){ if( pOp->p2==0 ){ rc = SQLITE_MISMATCH; goto abort_due_to_error; }else{ - pc = pOp->p2 - 1; - break; + goto jump_to_p2; } } } @@ -68172,114 +79870,93 @@ case OP_RealAffinity: { /* in1 */ #endif #ifndef SQLITE_OMIT_CAST -/* Opcode: ToText P1 * * * * +/* Opcode: Cast P1 P2 * * * +** Synopsis: affinity(r[P1]) ** -** Force the value in register P1 to be text. -** If the value is numeric, convert it to a string using the -** equivalent of printf(). Blob values are unchanged and -** are afterwards simply interpreted as text. +** Force the value in register P1 to be the type defined by P2. +** +**
      +**
    • TEXT +**
    • BLOB +**
    • NUMERIC +**
    • INTEGER +**
    • REAL +**
    ** ** A NULL value is not changed by this routine. It remains NULL. */ -case OP_ToText: { /* same as TK_TO_TEXT, in1 */ +case OP_Cast: { /* in1 */ + assert( pOp->p2>=SQLITE_AFF_BLOB && pOp->p2<=SQLITE_AFF_REAL ); + testcase( pOp->p2==SQLITE_AFF_TEXT ); + testcase( pOp->p2==SQLITE_AFF_BLOB ); + testcase( pOp->p2==SQLITE_AFF_NUMERIC ); + testcase( pOp->p2==SQLITE_AFF_INTEGER ); + testcase( pOp->p2==SQLITE_AFF_REAL ); pIn1 = &aMem[pOp->p1]; memAboutToChange(p, pIn1); - if( pIn1->flags & MEM_Null ) break; - assert( MEM_Str==(MEM_Blob>>3) ); - pIn1->flags |= (pIn1->flags&MEM_Blob)>>3; - applyAffinity(pIn1, SQLITE_AFF_TEXT, encoding); rc = ExpandBlob(pIn1); - assert( pIn1->flags & MEM_Str || db->mallocFailed ); - pIn1->flags &= ~(MEM_Int|MEM_Real|MEM_Blob|MEM_Zero); + sqlite3VdbeMemCast(pIn1, pOp->p2, encoding); UPDATE_MAX_BLOBSIZE(pIn1); - break; -} - -/* Opcode: ToBlob P1 * * * * -** -** Force the value in register P1 to be a BLOB. -** If the value is numeric, convert it to a string first. -** Strings are simply reinterpreted as blobs with no change -** to the underlying data. -** -** A NULL value is not changed by this routine. It remains NULL. -*/ -case OP_ToBlob: { /* same as TK_TO_BLOB, in1 */ - pIn1 = &aMem[pOp->p1]; - if( pIn1->flags & MEM_Null ) break; - if( (pIn1->flags & MEM_Blob)==0 ){ - applyAffinity(pIn1, SQLITE_AFF_TEXT, encoding); - assert( pIn1->flags & MEM_Str || db->mallocFailed ); - MemSetTypeFlag(pIn1, MEM_Blob); - }else{ - pIn1->flags &= ~(MEM_TypeMask&~MEM_Blob); - } - UPDATE_MAX_BLOBSIZE(pIn1); - break; -} - -/* Opcode: ToNumeric P1 * * * * -** -** Force the value in register P1 to be numeric (either an -** integer or a floating-point number.) -** If the value is text or blob, try to convert it to an using the -** equivalent of atoi() or atof() and store 0 if no such conversion -** is possible. -** -** A NULL value is not changed by this routine. It remains NULL. -*/ -case OP_ToNumeric: { /* same as TK_TO_NUMERIC, in1 */ - pIn1 = &aMem[pOp->p1]; - sqlite3VdbeMemNumerify(pIn1); + if( rc ) goto abort_due_to_error; break; } #endif /* SQLITE_OMIT_CAST */ -/* Opcode: ToInt P1 * * * * +/* Opcode: Eq P1 P2 P3 P4 P5 +** Synopsis: IF r[P3]==r[P1] ** -** Force the value in register P1 to be an integer. If -** The value is currently a real number, drop its fractional part. -** If the value is text or blob, try to convert it to an integer using the -** equivalent of atoi() and store 0 if no such conversion is possible. +** Compare the values in register P1 and P3. If reg(P3)==reg(P1) then +** jump to address P2. Or if the SQLITE_STOREP2 flag is set in P5, then +** store the result of comparison in register P2. ** -** A NULL value is not changed by this routine. It remains NULL. +** The SQLITE_AFF_MASK portion of P5 must be an affinity character - +** SQLITE_AFF_TEXT, SQLITE_AFF_INTEGER, and so forth. An attempt is made +** to coerce both inputs according to this affinity before the +** comparison is made. If the SQLITE_AFF_MASK is 0x00, then numeric +** affinity is used. Note that the affinity conversions are stored +** back into the input registers P1 and P3. So this opcode can cause +** persistent changes to registers P1 and P3. +** +** Once any conversions have taken place, and neither value is NULL, +** the values are compared. If both values are blobs then memcmp() is +** used to determine the results of the comparison. If both values +** are text, then the appropriate collating function specified in +** P4 is used to do the comparison. If P4 is not specified then +** memcmp() is used to compare text string. If both values are +** numeric, then a numeric comparison is used. If the two values +** are of different types, then numbers are considered less than +** strings and strings are considered less than blobs. +** +** If SQLITE_NULLEQ is set in P5 then the result of comparison is always either +** true or false and is never NULL. If both operands are NULL then the result +** of comparison is true. If either operand is NULL then the result is false. +** If neither operand is NULL the result is the same as it would be if +** the SQLITE_NULLEQ flag were omitted from P5. +** +** If both SQLITE_STOREP2 and SQLITE_KEEPNULL flags are set then the +** content of r[P2] is only changed if the new value is NULL or 0 (false). +** In other words, a prior r[P2] value will not be overwritten by 1 (true). */ -case OP_ToInt: { /* same as TK_TO_INT, in1 */ - pIn1 = &aMem[pOp->p1]; - if( (pIn1->flags & MEM_Null)==0 ){ - sqlite3VdbeMemIntegerify(pIn1); - } - break; -} - -#if !defined(SQLITE_OMIT_CAST) && !defined(SQLITE_OMIT_FLOATING_POINT) -/* Opcode: ToReal P1 * * * * +/* Opcode: Ne P1 P2 P3 P4 P5 +** Synopsis: IF r[P3]!=r[P1] ** -** Force the value in register P1 to be a floating point number. -** If The value is currently an integer, convert it. -** If the value is text or blob, try to convert it to an integer using the -** equivalent of atoi() and store 0.0 if no such conversion is possible. +** This works just like the Eq opcode except that the jump is taken if +** the operands in registers P1 and P3 are not equal. See the Eq opcode for +** additional information. ** -** A NULL value is not changed by this routine. It remains NULL. +** If both SQLITE_STOREP2 and SQLITE_KEEPNULL flags are set then the +** content of r[P2] is only changed if the new value is NULL or 1 (true). +** In other words, a prior r[P2] value will not be overwritten by 0 (false). */ -case OP_ToReal: { /* same as TK_TO_REAL, in1 */ - pIn1 = &aMem[pOp->p1]; - memAboutToChange(p, pIn1); - if( (pIn1->flags & MEM_Null)==0 ){ - sqlite3VdbeMemRealify(pIn1); - } - break; -} -#endif /* !defined(SQLITE_OMIT_CAST) && !defined(SQLITE_OMIT_FLOATING_POINT) */ - /* Opcode: Lt P1 P2 P3 P4 P5 -** Synopsis: if r[P1]r[P3] goto P2 +** Synopsis: IF r[P3]>r[P1] ** ** This works just like the Lt opcode except that the jump is taken if ** the content of register P3 is greater than the content of ** register P1. See the Lt opcode for additional information. */ /* Opcode: Ge P1 P2 P3 P4 P5 -** Synopsis: if r[P1]>=r[P3] goto P2 +** Synopsis: IF r[P3]>=r[P1] ** ** This works just like the Lt opcode except that the jump is taken if ** the content of register P3 is greater than or equal to the content of @@ -68360,7 +80004,7 @@ case OP_Lt: /* same as TK_LT, jump, in1, in3 */ case OP_Le: /* same as TK_LE, jump, in1, in3 */ case OP_Gt: /* same as TK_GT, jump, in1, in3 */ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */ - int res; /* Result of the comparison of pIn1 against pIn3 */ + int res, res2; /* Result of the comparison of pIn1 against pIn3 */ char affinity; /* Affinity to use for comparison */ u16 flags1; /* Copy of initial value of pIn1->flags */ u16 flags3; /* Copy of initial value of pIn3->flags */ @@ -68378,84 +80022,164 @@ case OP_Ge: { /* same as TK_GE, jump, in1, in3 */ */ assert( pOp->opcode==OP_Eq || pOp->opcode==OP_Ne ); assert( (flags1 & MEM_Cleared)==0 ); - if( (flags1&MEM_Null)!=0 - && (flags3&MEM_Null)!=0 + assert( (pOp->p5 & SQLITE_JUMPIFNULL)==0 ); + if( (flags1&flags3&MEM_Null)!=0 && (flags3&MEM_Cleared)==0 ){ - res = 0; /* Results are equal */ + res = 0; /* Operands are equal */ }else{ - res = 1; /* Results are not equal */ + res = 1; /* Operands are not equal */ } }else{ /* SQLITE_NULLEQ is clear and at least one operand is NULL, ** then the result is always NULL. ** The jump is taken if the SQLITE_JUMPIFNULL bit is set. */ - if( pOp->p5 & SQLITE_JUMPIFNULL ){ - pc = pOp->p2-1; - }else if( pOp->p5 & SQLITE_STOREP2 ){ + if( pOp->p5 & SQLITE_STOREP2 ){ pOut = &aMem[pOp->p2]; + iCompare = 1; /* Operands are not equal */ + memAboutToChange(p, pOut); MemSetTypeFlag(pOut, MEM_Null); REGISTER_TRACE(pOp->p2, pOut); + }else{ + VdbeBranchTaken(2,3); + if( pOp->p5 & SQLITE_JUMPIFNULL ){ + goto jump_to_p2; + } } break; } }else{ /* Neither operand is NULL. Do a comparison. */ affinity = pOp->p5 & SQLITE_AFF_MASK; - if( affinity ){ - applyAffinity(pIn1, affinity, encoding); - applyAffinity(pIn3, affinity, encoding); - if( db->mallocFailed ) goto no_mem; + if( affinity>=SQLITE_AFF_NUMERIC ){ + if( (flags1 | flags3)&MEM_Str ){ + if( (flags1 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + applyNumericAffinity(pIn1,0); + testcase( flags3!=pIn3->flags ); /* Possible if pIn1==pIn3 */ + flags3 = pIn3->flags; + } + if( (flags3 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + applyNumericAffinity(pIn3,0); + } + } + /* Handle the common case of integer comparison here, as an + ** optimization, to avoid a call to sqlite3MemCompare() */ + if( (pIn1->flags & pIn3->flags & MEM_Int)!=0 ){ + if( pIn3->u.i > pIn1->u.i ){ res = +1; goto compare_op; } + if( pIn3->u.i < pIn1->u.i ){ res = -1; goto compare_op; } + res = 0; + goto compare_op; + } + }else if( affinity==SQLITE_AFF_TEXT ){ + if( (flags1 & MEM_Str)==0 && (flags1 & (MEM_Int|MEM_Real))!=0 ){ + testcase( pIn1->flags & MEM_Int ); + testcase( pIn1->flags & MEM_Real ); + sqlite3VdbeMemStringify(pIn1, encoding, 1); + testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) ); + flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask); + assert( pIn1!=pIn3 ); + } + if( (flags3 & MEM_Str)==0 && (flags3 & (MEM_Int|MEM_Real))!=0 ){ + testcase( pIn3->flags & MEM_Int ); + testcase( pIn3->flags & MEM_Real ); + sqlite3VdbeMemStringify(pIn3, encoding, 1); + testcase( (flags3&MEM_Dyn) != (pIn3->flags&MEM_Dyn) ); + flags3 = (pIn3->flags & ~MEM_TypeMask) | (flags3 & MEM_TypeMask); + } } - assert( pOp->p4type==P4_COLLSEQ || pOp->p4.pColl==0 ); - ExpandBlob(pIn1); - ExpandBlob(pIn3); res = sqlite3MemCompare(pIn3, pIn1, pOp->p4.pColl); } +compare_op: switch( pOp->opcode ){ - case OP_Eq: res = res==0; break; - case OP_Ne: res = res!=0; break; - case OP_Lt: res = res<0; break; - case OP_Le: res = res<=0; break; - case OP_Gt: res = res>0; break; - default: res = res>=0; break; - } - - if( pOp->p5 & SQLITE_STOREP2 ){ - pOut = &aMem[pOp->p2]; - memAboutToChange(p, pOut); - MemSetTypeFlag(pOut, MEM_Int); - pOut->u.i = res; - REGISTER_TRACE(pOp->p2, pOut); - }else if( res ){ - pc = pOp->p2-1; + case OP_Eq: res2 = res==0; break; + case OP_Ne: res2 = res; break; + case OP_Lt: res2 = res<0; break; + case OP_Le: res2 = res<=0; break; + case OP_Gt: res2 = res>0; break; + default: res2 = res>=0; break; } /* Undo any changes made by applyAffinity() to the input registers. */ - pIn1->flags = (pIn1->flags&~MEM_TypeMask) | (flags1&MEM_TypeMask); - pIn3->flags = (pIn3->flags&~MEM_TypeMask) | (flags3&MEM_TypeMask); + assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) ); + pIn1->flags = flags1; + assert( (pIn3->flags & MEM_Dyn) == (flags3 & MEM_Dyn) ); + pIn3->flags = flags3; + + if( pOp->p5 & SQLITE_STOREP2 ){ + pOut = &aMem[pOp->p2]; + iCompare = res; + res2 = res2!=0; /* For this path res2 must be exactly 0 or 1 */ + if( (pOp->p5 & SQLITE_KEEPNULL)!=0 ){ + /* The KEEPNULL flag prevents OP_Eq from overwriting a NULL with 1 + ** and prevents OP_Ne from overwriting NULL with 0. This flag + ** is only used in contexts where either: + ** (1) op==OP_Eq && (r[P2]==NULL || r[P2]==0) + ** (2) op==OP_Ne && (r[P2]==NULL || r[P2]==1) + ** Therefore it is not necessary to check the content of r[P2] for + ** NULL. */ + assert( pOp->opcode==OP_Ne || pOp->opcode==OP_Eq ); + assert( res2==0 || res2==1 ); + testcase( res2==0 && pOp->opcode==OP_Eq ); + testcase( res2==1 && pOp->opcode==OP_Eq ); + testcase( res2==0 && pOp->opcode==OP_Ne ); + testcase( res2==1 && pOp->opcode==OP_Ne ); + if( (pOp->opcode==OP_Eq)==res2 ) break; + } + memAboutToChange(p, pOut); + MemSetTypeFlag(pOut, MEM_Int); + pOut->u.i = res2; + REGISTER_TRACE(pOp->p2, pOut); + }else{ + VdbeBranchTaken(res!=0, (pOp->p5 & SQLITE_NULLEQ)?2:3); + if( res2 ){ + goto jump_to_p2; + } + } break; } +/* Opcode: ElseNotEq * P2 * * * +** +** This opcode must immediately follow an OP_Lt or OP_Gt comparison operator. +** If result of an OP_Eq comparison on the same two operands +** would have be NULL or false (0), then then jump to P2. +** If the result of an OP_Eq comparison on the two previous operands +** would have been true (1), then fall through. +*/ +case OP_ElseNotEq: { /* same as TK_ESCAPE, jump */ + assert( pOp>aOp ); + assert( pOp[-1].opcode==OP_Lt || pOp[-1].opcode==OP_Gt ); + assert( pOp[-1].p5 & SQLITE_STOREP2 ); + VdbeBranchTaken(iCompare!=0, 2); + if( iCompare!=0 ) goto jump_to_p2; + break; +} + + /* Opcode: Permutation * * * P4 * ** -** Set the permutation used by the OP_Compare operator to be the array -** of integers in P4. +** Set the permutation used by the OP_Compare operator in the next +** instruction. The permutation is stored in the P4 operand. ** ** The permutation is only valid until the next OP_Compare that has ** the OPFLAG_PERMUTE bit set in P5. Typically the OP_Permutation should ** occur immediately prior to the OP_Compare. +** +** The first integer in the P4 integer array is the length of the array +** and does not become part of the permutation. */ case OP_Permutation: { assert( pOp->p4type==P4_INTARRAY ); assert( pOp->p4.ai ); - aPermute = pOp->p4.ai; + assert( pOp[1].opcode==OP_Compare ); + assert( pOp[1].p5 & OPFLAG_PERMUTE ); break; } /* Opcode: Compare P1 P2 P3 P4 P5 +** Synopsis: r[P1@P3] <-> r[P2@P3] ** ** Compare two vectors of registers in reg(P1)..reg(P1+P3-1) (call this ** vector "A") and in reg(P2)..reg(P2+P3-1) ("B"). Save the result of @@ -68483,8 +80207,17 @@ case OP_Compare: { int idx; CollSeq *pColl; /* Collating sequence to use on this term */ int bRev; /* True for DESCENDING sort order */ + int *aPermute; /* The permutation */ - if( (pOp->p5 & OPFLAG_PERMUTE)==0 ) aPermute = 0; + if( (pOp->p5 & OPFLAG_PERMUTE)==0 ){ + aPermute = 0; + }else{ + assert( pOp>aOp ); + assert( pOp[-1].opcode==OP_Permutation ); + assert( pOp[-1].p4type==P4_INTARRAY ); + aPermute = pOp[-1].p4.ai + 1; + assert( aPermute!=0 ); + } n = pOp->p3; pKeyInfo = pOp->p4.pKeyInfo; assert( n>0 ); @@ -68495,11 +80228,11 @@ case OP_Compare: { if( aPermute ){ int k, mx = 0; for(k=0; kmx ) mx = aPermute[k]; - assert( p1>0 && p1+mx<=(p->nMem-p->nCursor)+1 ); - assert( p2>0 && p2+mx<=(p->nMem-p->nCursor)+1 ); + assert( p1>0 && p1+mx<=(p->nMem+1 - p->nCursor)+1 ); + assert( p2>0 && p2+mx<=(p->nMem+1 - p->nCursor)+1 ); }else{ - assert( p1>0 && p1+n<=(p->nMem-p->nCursor)+1 ); - assert( p2>0 && p2+n<=(p->nMem-p->nCursor)+1 ); + assert( p1>0 && p1+n<=(p->nMem+1 - p->nCursor)+1 ); + assert( p2>0 && p2+n<=(p->nMem+1 - p->nCursor)+1 ); } #endif /* SQLITE_DEBUG */ for(i=0; ip1 - 1; + VdbeBranchTaken(0,3); pOp = &aOp[pOp->p1 - 1]; }else if( iCompare==0 ){ - pc = pOp->p2 - 1; + VdbeBranchTaken(1,3); pOp = &aOp[pOp->p2 - 1]; }else{ - pc = pOp->p3 - 1; + VdbeBranchTaken(2,3); pOp = &aOp[pOp->p3 - 1]; } break; } @@ -68602,10 +80334,10 @@ case OP_Or: { /* same as TK_OR, in1, in2, out3 */ case OP_Not: { /* same as TK_NOT, in1, out2 */ pIn1 = &aMem[pOp->p1]; pOut = &aMem[pOp->p2]; - if( pIn1->flags & MEM_Null ){ - sqlite3VdbeMemSetNull(pOut); - }else{ - sqlite3VdbeMemSetInt64(pOut, !sqlite3VdbeIntValue(pIn1)); + sqlite3VdbeMemSetNull(pOut); + if( (pIn1->flags & MEM_Null)==0 ){ + pOut->flags = MEM_Int; + pOut->u.i = !sqlite3VdbeIntValue(pIn1); } break; } @@ -68620,25 +80352,28 @@ case OP_Not: { /* same as TK_NOT, in1, out2 */ case OP_BitNot: { /* same as TK_BITNOT, in1, out2 */ pIn1 = &aMem[pOp->p1]; pOut = &aMem[pOp->p2]; - if( pIn1->flags & MEM_Null ){ - sqlite3VdbeMemSetNull(pOut); - }else{ - sqlite3VdbeMemSetInt64(pOut, ~sqlite3VdbeIntValue(pIn1)); + sqlite3VdbeMemSetNull(pOut); + if( (pIn1->flags & MEM_Null)==0 ){ + pOut->flags = MEM_Int; + pOut->u.i = ~sqlite3VdbeIntValue(pIn1); } break; } /* Opcode: Once P1 P2 * * * ** -** Check if OP_Once flag P1 is set. If so, jump to instruction P2. Otherwise, -** set the flag and fall through to the next instruction. +** If the P1 value is equal to the P1 value on the OP_Init opcode at +** instruction 0, then jump to P2. If the two P1 values differ, then +** set the P1 value on this opcode to equal the P1 value on the OP_Init +** and fall through. */ case OP_Once: { /* jump */ - assert( pOp->p1nOnceFlag ); - if( p->aOnceFlag[pOp->p1] ){ - pc = pOp->p2-1; + assert( p->aOp[0].opcode==OP_Init ); + VdbeBranchTaken(p->aOp[0].p1==pOp->p1, 2); + if( p->aOp[0].p1==pOp->p1 ){ + goto jump_to_p2; }else{ - p->aOnceFlag[pOp->p1] = 1; + pOp->p1 = p->aOp[0].p1; } break; } @@ -68647,13 +80382,13 @@ case OP_Once: { /* jump */ ** ** Jump to P2 if the value in register P1 is true. The value ** is considered true if it is numeric and non-zero. If the value -** in P1 is NULL then take the jump if P3 is non-zero. +** in P1 is NULL then take the jump if and only if P3 is non-zero. */ /* Opcode: IfNot P1 P2 P3 * * ** ** Jump to P2 if the value in register P1 is False. The value ** is considered false if it has a numeric value of zero. If the value -** in P1 is NULL then take the jump if P3 is zero. +** in P1 is NULL then take the jump if and only if P3 is non-zero. */ case OP_If: /* jump, in1 */ case OP_IfNot: { /* jump, in1 */ @@ -68669,21 +80404,23 @@ case OP_IfNot: { /* jump, in1 */ #endif if( pOp->opcode==OP_IfNot ) c = !c; } + VdbeBranchTaken(c!=0, 2); if( c ){ - pc = pOp->p2-1; + goto jump_to_p2; } break; } /* Opcode: IsNull P1 P2 * * * -** Synopsis: if r[P1]==NULL goto P2 +** Synopsis: if r[P1]==NULL goto P2 ** ** Jump to P2 if the value in register P1 is NULL. */ case OP_IsNull: { /* same as TK_ISNULL, jump, in1 */ pIn1 = &aMem[pOp->p1]; + VdbeBranchTaken( (pIn1->flags & MEM_Null)!=0, 2); if( (pIn1->flags & MEM_Null)!=0 ){ - pc = pOp->p2 - 1; + goto jump_to_p2; } break; } @@ -68695,14 +80432,15 @@ case OP_IsNull: { /* same as TK_ISNULL, jump, in1 */ */ case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */ pIn1 = &aMem[pOp->p1]; + VdbeBranchTaken( (pIn1->flags & MEM_Null)==0, 2); if( (pIn1->flags & MEM_Null)==0 ){ - pc = pOp->p2 - 1; + goto jump_to_p2; } break; } /* Opcode: Column P1 P2 P3 P4 P5 -** Synopsis: r[P3]=PX +** Synopsis: r[P3]=PX ** ** Interpret the data that cursor P1 points to as a structure built using ** the MakeRecord instruction. (See the MakeRecord opcode for additional @@ -68727,11 +80465,9 @@ case OP_NotNull: { /* same as TK_NOTNULL, jump, in1 */ ** skipped for length() and all content loading can be skipped for typeof(). */ case OP_Column: { - i64 payloadSize64; /* Number of bytes in the record */ int p2; /* column number to retrieve */ VdbeCursor *pC; /* The VDBE cursor */ BtCursor *pCrsr; /* The BTree cursor */ - u32 *aType; /* aType[i] holds the numeric type of the i-th column */ u32 *aOffset; /* aOffset[i] is offset to start of data for i-th column */ int len; /* The length of the serialized data for the column */ int i; /* Loop counter */ @@ -68741,107 +80477,98 @@ case OP_Column: { const u8 *zHdr; /* Next unparsed byte of the header */ const u8 *zEndHdr; /* Pointer to first byte after the header */ u32 offset; /* Offset into the data */ - u32 szField; /* Number of bytes in the content of a field */ + u64 offset64; /* 64-bit offset */ u32 avail; /* Number of bytes of available data */ u32 t; /* A type code from the record header */ Mem *pReg; /* PseudoTable input register */ + pC = p->apCsr[pOp->p1]; p2 = pOp->p2; - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); + + /* If the cursor cache is stale, bring it up-to-date */ + rc = sqlite3VdbeCursorMoveto(&pC, &p2); + if( rc ) goto abort_due_to_error; + + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pDest = &aMem[pOp->p3]; memAboutToChange(p, pDest); assert( pOp->p1>=0 && pOp->p1nCursor ); - pC = p->apCsr[pOp->p1]; assert( pC!=0 ); assert( p2nField ); - aType = pC->aType; - aOffset = aType + pC->nField; -#ifndef SQLITE_OMIT_VIRTUALTABLE - assert( pC->pVtabCursor==0 ); /* OP_Column never called on virtual table */ -#endif - pCrsr = pC->pCursor; - assert( pCrsr!=0 || pC->pseudoTableReg>0 ); /* pCrsr NULL on PseudoTables */ - assert( pCrsr!=0 || pC->nullRow ); /* pC->nullRow on PseudoTables */ + aOffset = pC->aOffset; + assert( pC->eCurType!=CURTYPE_VTAB ); + assert( pC->eCurType!=CURTYPE_PSEUDO || pC->nullRow ); + assert( pC->eCurType!=CURTYPE_SORTER ); - /* If the cursor cache is stale, bring it up-to-date */ - rc = sqlite3VdbeCursorMoveto(pC); - if( rc ) goto abort_due_to_error; - if( pC->cacheStatus!=p->cacheCtr || (pOp->p5&OPFLAG_CLEARCACHE)!=0 ){ + if( pC->cacheStatus!=p->cacheCtr ){ /*OPTIMIZATION-IF-FALSE*/ if( pC->nullRow ){ - if( pCrsr==0 ){ - assert( pC->pseudoTableReg>0 ); - pReg = &aMem[pC->pseudoTableReg]; - if( pC->multiPseudo ){ - sqlite3VdbeMemShallowCopy(pDest, pReg+p2, MEM_Ephem); - Deephemeralize(pDest); - goto op_column_out; - } + if( pC->eCurType==CURTYPE_PSEUDO ){ + assert( pC->uc.pseudoTableReg>0 ); + pReg = &aMem[pC->uc.pseudoTableReg]; assert( pReg->flags & MEM_Blob ); assert( memIsValid(pReg) ); pC->payloadSize = pC->szRow = avail = pReg->n; pC->aRow = (u8*)pReg->z; }else{ - MemSetTypeFlag(pDest, MEM_Null); + sqlite3VdbeMemSetNull(pDest); goto op_column_out; } }else{ + pCrsr = pC->uc.pCursor; + assert( pC->eCurType==CURTYPE_BTREE ); assert( pCrsr ); - if( pC->isTable==0 ){ - assert( sqlite3BtreeCursorIsValid(pCrsr) ); - VVA_ONLY(rc =) sqlite3BtreeKeySize(pCrsr, &payloadSize64); - assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */ - /* sqlite3BtreeParseCellPtr() uses getVarint32() to extract the - ** payload size, so it is impossible for payloadSize64 to be - ** larger than 32 bits. */ - assert( (payloadSize64 & SQLITE_MAX_U32)==(u64)payloadSize64 ); - pC->aRow = sqlite3BtreeKeyFetch(pCrsr, &avail); - pC->payloadSize = (u32)payloadSize64; - }else{ - assert( sqlite3BtreeCursorIsValid(pCrsr) ); - VVA_ONLY(rc =) sqlite3BtreeDataSize(pCrsr, &pC->payloadSize); - assert( rc==SQLITE_OK ); /* DataSize() cannot fail */ - pC->aRow = sqlite3BtreeDataFetch(pCrsr, &avail); - } + assert( sqlite3BtreeCursorIsValid(pCrsr) ); + pC->payloadSize = sqlite3BtreePayloadSize(pCrsr); + pC->aRow = sqlite3BtreePayloadFetch(pCrsr, &avail); assert( avail<=65536 ); /* Maximum page size is 64KiB */ if( pC->payloadSize <= (u32)avail ){ pC->szRow = pC->payloadSize; + }else if( pC->payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ + goto too_big; }else{ pC->szRow = avail; } - if( pC->payloadSize > (u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ - goto too_big; - } } pC->cacheStatus = p->cacheCtr; pC->iHdrOffset = getVarint32(pC->aRow, offset); pC->nHdrParsed = 0; aOffset[0] = offset; - if( availaRow does not have to hold the entire row, but it does at least ** need to cover the header of the record. If pC->aRow does not contain ** the complete header, then set it to zero, forcing the header to be ** dynamically allocated. */ pC->aRow = 0; pC->szRow = 0; - } - /* Make sure a corrupt database has not given us an oversize header. - ** Do this now to avoid an oversize memory allocation. - ** - ** Type entries can be between 1 and 5 bytes each. But 4 and 5 byte - ** types use so much data space that there can only be 4096 and 32 of - ** them, respectively. So the maximum header length results from a - ** 3-byte type for each of the maximum of 32768 columns plus three - ** extra bytes for the header length itself. 32768*3 + 3 = 98307. - */ - if( offset > 98307 || offset > pC->payloadSize ){ - rc = SQLITE_CORRUPT_BKPT; - goto op_column_error; + /* Make sure a corrupt database has not given us an oversize header. + ** Do this now to avoid an oversize memory allocation. + ** + ** Type entries can be between 1 and 5 bytes each. But 4 and 5 byte + ** types use so much data space that there can only be 4096 and 32 of + ** them, respectively. So the maximum header length results from a + ** 3-byte type for each of the maximum of 32768 columns plus three + ** extra bytes for the header length itself. 32768*3 + 3 = 98307. + */ + if( offset > 98307 || offset > pC->payloadSize ){ + rc = SQLITE_CORRUPT_BKPT; + goto abort_due_to_error; + } + }else if( offset>0 ){ /*OPTIMIZATION-IF-TRUE*/ + /* The following goto is an optimization. It can be omitted and + ** everything will still work. But OP_Column is measurably faster + ** by skipping the subsequent conditional, which is always true. + */ + zData = pC->aRow; + assert( pC->nHdrParsed<=p2 ); /* Conditional skipped */ + goto op_column_read_header; } } /* Make sure at least the first p2+1 entries of the header have been - ** parsed and valid information is in aOffset[] and aType[]. + ** parsed and valid information is in aOffset[] and pC->aType[]. */ if( pC->nHdrParsed<=p2 ){ /* If there is more header available for parsing in the record, try @@ -68851,62 +80578,52 @@ case OP_Column: { /* Make sure zData points to enough of the record to cover the header. */ if( pC->aRow==0 ){ memset(&sMem, 0, sizeof(sMem)); - rc = sqlite3VdbeMemFromBtree(pCrsr, 0, aOffset[0], - !pC->isTable, &sMem); - if( rc!=SQLITE_OK ){ - goto op_column_error; - } + rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, 0, aOffset[0], &sMem); + if( rc!=SQLITE_OK ) goto abort_due_to_error; zData = (u8*)sMem.z; }else{ zData = pC->aRow; } - /* Fill in aType[i] and aOffset[i] values through the p2-th field. */ + /* Fill in pC->aType[i] and aOffset[i] values through the p2-th field. */ + op_column_read_header: i = pC->nHdrParsed; - offset = aOffset[i]; + offset64 = aOffset[i]; zHdr = zData + pC->iHdrOffset; zEndHdr = zData + aOffset[0]; - assert( i<=p2 && zHdraType[i++] = t; + aOffset[i] = (u32)(offset64 & 0xffffffff); }while( i<=p2 && zHdr=zEndHdr && (zHdr>zEndHdr || offset64!=pC->payloadSize)) + || (offset64 > pC->payloadSize) + ){ + if( pC->aRow==0 ) sqlite3VdbeMemRelease(&sMem); + rc = SQLITE_CORRUPT_BKPT; + goto abort_due_to_error; + } + pC->nHdrParsed = i; pC->iHdrOffset = (u32)(zHdr - zData); - if( pC->aRow==0 ){ - sqlite3VdbeMemRelease(&sMem); - sMem.flags = MEM_Null; - } - - /* If we have read more header data than was contained in the header, - ** or if the end of the last field appears to be past the end of the - ** record, or if the end of the last field appears to be before the end - ** of the record (when all fields present), then we must be dealing - ** with a corrupt database. - */ - if( (zHdr > zEndHdr) - || (offset > pC->payloadSize) - || (zHdr==zEndHdr && offset!=pC->payloadSize) - ){ - rc = SQLITE_CORRUPT_BKPT; - goto op_column_error; - } + if( pC->aRow==0 ) sqlite3VdbeMemRelease(&sMem); + }else{ + t = 0; } - /* If after trying to extra new entries from the header, nHdrParsed is + /* If after trying to extract new entries from the header, nHdrParsed is ** still not up to p2, that means that the record has fewer than p2 ** columns. So the result will be either the default value or a NULL. */ @@ -68914,68 +80631,74 @@ case OP_Column: { if( pOp->p4type==P4_MEM ){ sqlite3VdbeMemShallowCopy(pDest, pOp->p4.pMem, MEM_Static); }else{ - MemSetTypeFlag(pDest, MEM_Null); + sqlite3VdbeMemSetNull(pDest); } goto op_column_out; } + }else{ + t = pC->aType[p2]; } /* Extract the content for the p2+1-th column. Control can only - ** reach this point if aOffset[p2], aOffset[p2+1], and aType[p2] are + ** reach this point if aOffset[p2], aOffset[p2+1], and pC->aType[p2] are ** all valid. */ assert( p2nHdrParsed ); assert( rc==SQLITE_OK ); + assert( sqlite3VdbeCheckMemInvariants(pDest) ); + if( VdbeMemDynamic(pDest) ){ + sqlite3VdbeMemSetNull(pDest); + } + assert( t==pC->aType[p2] ); if( pC->szRow>=aOffset[p2+1] ){ /* This is the common case where the desired content fits on the original ** page - where the content is not on an overflow page */ - VdbeMemRelease(pDest); - sqlite3VdbeSerialGet(pC->aRow+aOffset[p2], aType[p2], pDest); + zData = pC->aRow + aOffset[p2]; + if( t<12 ){ + sqlite3VdbeSerialGet(zData, t, pDest); + }else{ + /* If the column value is a string, we need a persistent value, not + ** a MEM_Ephem value. This branch is a fast short-cut that is equivalent + ** to calling sqlite3VdbeSerialGet() and sqlite3VdbeDeephemeralize(). + */ + static const u16 aFlag[] = { MEM_Blob, MEM_Str|MEM_Term }; + pDest->n = len = (t-12)/2; + pDest->enc = encoding; + if( pDest->szMalloc < len+2 ){ + pDest->flags = MEM_Null; + if( sqlite3VdbeMemGrow(pDest, len+2, 0) ) goto no_mem; + }else{ + pDest->z = pDest->zMalloc; + } + memcpy(pDest->z, zData, len); + pDest->z[len] = 0; + pDest->z[len+1] = 0; + pDest->flags = aFlag[t&1]; + } }else{ + pDest->enc = encoding; /* This branch happens only when content is on overflow pages */ - t = aType[p2]; if( ((pOp->p5 & (OPFLAG_LENGTHARG|OPFLAG_TYPEOFARG))!=0 && ((t>=12 && (t&1)==0) || (pOp->p5 & OPFLAG_TYPEOFARG)!=0)) || (len = sqlite3VdbeSerialTypeLen(t))==0 ){ - /* Content is irrelevant for the typeof() function and for - ** the length(X) function if X is a blob. So we might as well use - ** bogus content rather than reading content from disk. NULL works - ** for text and blob and whatever is in the payloadSize64 variable - ** will work for everything else. Content is also irrelevant if - ** the content length is 0. */ - zData = t<=13 ? (u8*)&payloadSize64 : 0; - sMem.zMalloc = 0; + /* Content is irrelevant for + ** 1. the typeof() function, + ** 2. the length(X) function if X is a blob, and + ** 3. if the content length is zero. + ** So we might as well use bogus content rather than reading + ** content from disk. */ + static u8 aZero[8]; /* This is the bogus content */ + sqlite3VdbeSerialGet(aZero, t, pDest); }else{ - memset(&sMem, 0, sizeof(sMem)); - sqlite3VdbeMemMove(&sMem, pDest); - rc = sqlite3VdbeMemFromBtree(pCrsr, aOffset[p2], len, !pC->isTable, - &sMem); - if( rc!=SQLITE_OK ){ - goto op_column_error; - } - zData = (u8*)sMem.z; - } - sqlite3VdbeSerialGet(zData, t, pDest); - /* If we dynamically allocated space to hold the data (in the - ** sqlite3VdbeMemFromBtree() call above) then transfer control of that - ** dynamically allocated space over to the pDest structure. - ** This prevents a memory copy. */ - if( sMem.zMalloc ){ - assert( sMem.z==sMem.zMalloc ); - assert( !(pDest->flags & MEM_Dyn) ); - assert( !(pDest->flags & (MEM_Blob|MEM_Str)) || pDest->z==sMem.z ); - pDest->flags &= ~(MEM_Ephem|MEM_Static); - pDest->flags |= MEM_Term; - pDest->z = sMem.z; - pDest->zMalloc = sMem.zMalloc; + rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, aOffset[p2], len, pDest); + if( rc!=SQLITE_OK ) goto abort_due_to_error; + sqlite3VdbeSerialGet((const u8*)pDest->z, t, pDest); + pDest->flags &= ~MEM_Ephem; } } - pDest->enc = encoding; op_column_out: - Deephemeralize(pDest); -op_column_error: UPDATE_MAX_BLOBSIZE(pDest); REGISTER_TRACE(pOp->p3, pDest); break; @@ -68999,9 +80722,8 @@ case OP_Affinity: { assert( zAffinity[pOp->p2]==0 ); pIn1 = &aMem[pOp->p1]; while( (cAff = *(zAffinity++))!=0 ){ - assert( pIn1 <= &p->aMem[(p->nMem-p->nCursor)] ); + assert( pIn1 <= &p->aMem[(p->nMem+1 - p->nCursor)] ); assert( memIsValid(pIn1) ); - ExpandBlob(pIn1); applyAffinity(pIn1, cAff, encoding); pIn1++; } @@ -69022,7 +80744,7 @@ case OP_Affinity: { ** The mapping from character to affinity is given by the SQLITE_AFF_ ** macros defined in sqliteInt.h. ** -** If P4 is NULL then all index fields have the affinity NONE. +** If P4 is NULL then all index fields have the affinity BLOB. */ case OP_MakeRecord: { u8 *zNewRecord; /* A buffer to hold the data for the new record */ @@ -69030,7 +80752,7 @@ case OP_MakeRecord: { u64 nData; /* Number of bytes of data space */ int nHdr; /* Number of bytes of header space */ i64 nByte; /* Data space required for this record */ - int nZero; /* Number of zero bytes at the end of the record */ + i64 nZero; /* Number of zero bytes at the end of the record */ int nVarint; /* Number of bytes in a varint */ u32 serial_type; /* Type field */ Mem *pData0; /* First field to be combined into the record */ @@ -69040,7 +80762,7 @@ case OP_MakeRecord: { int file_format; /* File format to use for encoding */ int i; /* Space used in zNewRecord[] header */ int j; /* Space used in zNewRecord[] content */ - int len; /* Length of a field */ + u32 len; /* Length of a field */ /* Assuming the record contains N fields, the record format looks ** like this: @@ -69050,7 +80772,7 @@ case OP_MakeRecord: { ** ------------------------------------------------------------------------ ** ** Data(0) is taken from register P1. Data(1) comes from register P1+1 - ** and so froth. + ** and so forth. ** ** Each type field is a varint representing the serial type of the ** corresponding data element (see sqlite3VdbeSerialType()). The @@ -69062,7 +80784,7 @@ case OP_MakeRecord: { nZero = 0; /* Number of zero bytes at the end of the record */ nField = pOp->p1; zAffinity = pOp->p4.z; - assert( nField>0 && pOp->p2>0 && pOp->p2+nField<=(p->nMem-p->nCursor)+1 ); + assert( nField>0 && pOp->p2>0 && pOp->p2+nField<=(p->nMem+1 - p->nCursor)+1 ); pData0 = &aMem[nField]; nField = pOp->p2; pLast = &pData0[nField-1]; @@ -69079,21 +80801,35 @@ case OP_MakeRecord: { if( zAffinity ){ pRec = pData0; do{ - applyAffinity(pRec, *(zAffinity++), encoding); - }while( (++pRec)<=pLast ); + applyAffinity(pRec++, *(zAffinity++), encoding); + assert( zAffinity[0]==0 || pRec<=pLast ); + }while( zAffinity[0] ); } +#ifdef SQLITE_ENABLE_NULL_TRIM + /* NULLs can be safely trimmed from the end of the record, as long as + ** as the schema format is 2 or more and none of the omitted columns + ** have a non-NULL default value. Also, the record must be left with + ** at least one field. If P5>0 then it will be one more than the + ** index of the right-most column with a non-NULL default value */ + if( pOp->p5 ){ + while( (pLast->flags & MEM_Null)!=0 && nField>pOp->p5 ){ + pLast--; + nField--; + } + } +#endif + /* Loop through the elements that will make up the record to figure ** out how much space is required for the new record. */ pRec = pLast; do{ assert( memIsValid(pRec) ); - serial_type = sqlite3VdbeSerialType(pRec, file_format); - len = sqlite3VdbeSerialTypeLen(serial_type); + pRec->uTemp = serial_type = sqlite3VdbeSerialType(pRec, file_format, &len); if( pRec->flags & MEM_Zero ){ if( nData ){ - sqlite3VdbeMemExpandBlob(pRec); + if( sqlite3VdbeMemExpandBlob(pRec) ) goto no_mem; }else{ nZero += pRec->u.nZero; len -= pRec->u.nZero; @@ -69103,9 +80839,14 @@ case OP_MakeRecord: { testcase( serial_type==127 ); testcase( serial_type==128 ); nHdr += serial_type<=127 ? 1 : sqlite3VarintLen(serial_type); - }while( (--pRec)>=pData0 ); + if( pRec==pData0 ) break; + pRec--; + }while(1); - /* Add the initial header varint and total the size */ + /* EVIDENCE-OF: R-22564-11647 The header begins with a single varint + ** which determines the total number of bytes in the header. The varint + ** value is the size of the header in bytes including the size varint + ** itself. */ testcase( nHdr==126 ); testcase( nHdr==127 ); if( nHdr<=126 ){ @@ -69118,16 +80859,16 @@ case OP_MakeRecord: { if( nVarintdb->aLimit[SQLITE_LIMIT_LENGTH] ){ + if( nByte+nZero>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } /* Make sure the output register has a buffer large enough to store ** the new record. The output register (pOp->p3) is not allowed to ** be one of the input registers (because the following call to - ** sqlite3VdbeMemGrow() could clobber the value before it is used). + ** sqlite3VdbeMemClearAndResize() could clobber the value before it is used). */ - if( sqlite3VdbeMemGrow(pOut, (int)nByte, 0) ){ + if( sqlite3VdbeMemClearAndResize(pOut, (int)nByte) ){ goto no_mem; } zNewRecord = (u8 *)pOut->z; @@ -69138,17 +80879,20 @@ case OP_MakeRecord: { assert( pData0<=pLast ); pRec = pData0; do{ - serial_type = sqlite3VdbeSerialType(pRec, file_format); + serial_type = pRec->uTemp; + /* EVIDENCE-OF: R-06529-47362 Following the size varint are one or more + ** additional varints, one per column. */ i += putVarint32(&zNewRecord[i], serial_type); /* serial type */ + /* EVIDENCE-OF: R-64536-51728 The values for each column in the record + ** immediately follow the header. */ j += sqlite3VdbeSerialPut(&zNewRecord[j], pRec, serial_type); /* content */ }while( (++pRec)<=pLast ); assert( i==nHdr ); assert( j==nByte ); - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pOut->n = (int)nByte; - pOut->flags = MEM_Blob | MEM_Dyn; - pOut->xDel = 0; + pOut->flags = MEM_Blob; if( nZero ){ pOut->u.nZero = nZero; pOut->flags |= MEM_Zero; @@ -69166,14 +80910,17 @@ case OP_MakeRecord: { ** opened by cursor P1 in register P2 */ #ifndef SQLITE_OMIT_BTREECOUNT -case OP_Count: { /* out2-prerelease */ +case OP_Count: { /* out2 */ i64 nEntry; BtCursor *pCrsr; - pCrsr = p->apCsr[pOp->p1]->pCursor; + assert( p->apCsr[pOp->p1]->eCurType==CURTYPE_BTREE ); + pCrsr = p->apCsr[pOp->p1]->uc.pCursor; assert( pCrsr ); nEntry = 0; /* Not needed. Only used to silence a warning. */ rc = sqlite3BtreeCount(pCrsr, &nEntry); + if( rc ) goto abort_due_to_error; + pOut = out2Prerelease(p, pOp); pOut->u.i = nEntry; break; } @@ -69212,8 +80959,7 @@ case OP_Savepoint: { /* A new savepoint cannot be created if there are active write ** statements (i.e. open read/write incremental blob handles). */ - sqlite3SetString(&p->zErrMsg, db, "cannot open savepoint - " - "SQL statements in progress"); + sqlite3VdbeError(p, "cannot open savepoint - SQL statements in progress"); rc = SQLITE_BUSY; }else{ nName = sqlite3Strlen30(zName); @@ -69230,7 +80976,7 @@ case OP_Savepoint: { #endif /* Create a new savepoint structure. */ - pNew = sqlite3DbMallocRaw(db, sizeof(Savepoint)+nName+1); + pNew = sqlite3DbMallocRawNN(db, sizeof(Savepoint)+nName+1); if( pNew ){ pNew->zName = (char *)&pNew[1]; memcpy(pNew->zName, zName, nName+1); @@ -69243,7 +80989,7 @@ case OP_Savepoint: { }else{ db->nSavepoint++; } - + /* Link the new savepoint into the database handle's list. */ pNew->pNext = db->pSavepoint; db->pSavepoint = pNew; @@ -69264,15 +81010,14 @@ case OP_Savepoint: { iSavepoint++; } if( !pSavepoint ){ - sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", zName); + sqlite3VdbeError(p, "no such savepoint: %s", zName); rc = SQLITE_ERROR; }else if( db->nVdbeWrite>0 && p1==SAVEPOINT_RELEASE ){ /* It is not possible to release (commit) a savepoint if there are ** active write statements. */ - sqlite3SetString(&p->zErrMsg, db, - "cannot release savepoint - SQL statements in progress" - ); + sqlite3VdbeError(p, "cannot release savepoint - " + "SQL statements in progress"); rc = SQLITE_BUSY; }else{ @@ -69287,7 +81032,7 @@ case OP_Savepoint: { } db->autoCommit = 1; if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ - p->pc = pc; + p->pc = (int)(pOp - aOp); db->autoCommit = 0; p->rc = rc = SQLITE_BUSY; goto vdbe_return; @@ -69295,11 +81040,18 @@ case OP_Savepoint: { db->isTransactionSavepoint = 0; rc = p->rc; }else{ + int isSchemaChange; iSavepoint = db->nSavepoint - iSavepoint - 1; if( p1==SAVEPOINT_ROLLBACK ){ + isSchemaChange = (db->flags & SQLITE_InternChanges)!=0; for(ii=0; iinDb; ii++){ - sqlite3BtreeTripAllCursors(db->aDb[ii].pBt, SQLITE_ABORT); + rc = sqlite3BtreeTripAllCursors(db->aDb[ii].pBt, + SQLITE_ABORT_ROLLBACK, + isSchemaChange==0); + if( rc!=SQLITE_OK ) goto abort_due_to_error; } + }else{ + isSchemaChange = 0; } for(ii=0; iinDb; ii++){ rc = sqlite3BtreeSavepoint(db->aDb[ii].pBt, p1, iSavepoint); @@ -69307,7 +81059,7 @@ case OP_Savepoint: { goto abort_due_to_error; } } - if( p1==SAVEPOINT_ROLLBACK && (db->flags&SQLITE_InternChanges)!=0 ){ + if( isSchemaChange ){ sqlite3ExpirePreparedStatements(db); sqlite3ResetAllSchemasOfConnection(db); db->flags = (db->flags | SQLITE_InternChanges); @@ -69339,12 +81091,13 @@ case OP_Savepoint: { db->nDeferredImmCons = pSavepoint->nDeferredImmCons; } - if( !isTransaction ){ + if( !isTransaction || p1==SAVEPOINT_ROLLBACK ){ rc = sqlite3VtabSavepoint(db, p1, iSavepoint); if( rc!=SQLITE_OK ) goto abort_due_to_error; } } } + if( rc ) goto abort_due_to_error; break; } @@ -69361,49 +81114,37 @@ case OP_Savepoint: { case OP_AutoCommit: { int desiredAutoCommit; int iRollback; - int turnOnAC; desiredAutoCommit = pOp->p1; iRollback = pOp->p2; - turnOnAC = desiredAutoCommit && !db->autoCommit; assert( desiredAutoCommit==1 || desiredAutoCommit==0 ); assert( desiredAutoCommit==1 || iRollback==0 ); assert( db->nVdbeActive>0 ); /* At least this one VM is active */ assert( p->bIsReader ); -#if 0 - if( turnOnAC && iRollback && db->nVdbeActive>1 ){ - /* If this instruction implements a ROLLBACK and other VMs are - ** still running, and a transaction is active, return an error indicating - ** that the other VMs must complete first. - */ - sqlite3SetString(&p->zErrMsg, db, "cannot rollback transaction - " - "SQL statements in progress"); - rc = SQLITE_BUSY; - }else -#endif - if( turnOnAC && !iRollback && db->nVdbeWrite>0 ){ - /* If this instruction implements a COMMIT and other VMs are writing - ** return an error indicating that the other VMs must complete first. - */ - sqlite3SetString(&p->zErrMsg, db, "cannot commit transaction - " - "SQL statements in progress"); - rc = SQLITE_BUSY; - }else if( desiredAutoCommit!=db->autoCommit ){ + if( desiredAutoCommit!=db->autoCommit ){ if( iRollback ){ assert( desiredAutoCommit==1 ); sqlite3RollbackAll(db, SQLITE_ABORT_ROLLBACK); db->autoCommit = 1; + }else if( desiredAutoCommit && db->nVdbeWrite>0 ){ + /* If this instruction implements a COMMIT and other VMs are writing + ** return an error indicating that the other VMs must complete first. + */ + sqlite3VdbeError(p, "cannot commit transaction - " + "SQL statements in progress"); + rc = SQLITE_BUSY; + goto abort_due_to_error; }else if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){ goto vdbe_return; }else{ db->autoCommit = (u8)desiredAutoCommit; - if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ - p->pc = pc; - db->autoCommit = (u8)(1-desiredAutoCommit); - p->rc = rc = SQLITE_BUSY; - goto vdbe_return; - } + } + if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ + p->pc = (int)(pOp - aOp); + db->autoCommit = (u8)(1-desiredAutoCommit); + p->rc = rc = SQLITE_BUSY; + goto vdbe_return; } assert( db->nStatement==0 ); sqlite3CloseSavepoints(db); @@ -69414,35 +81155,30 @@ case OP_AutoCommit: { } goto vdbe_return; }else{ - sqlite3SetString(&p->zErrMsg, db, + sqlite3VdbeError(p, (!desiredAutoCommit)?"cannot start a transaction within a transaction":( (iRollback)?"cannot rollback - no transaction is active": "cannot commit - no transaction is active")); rc = SQLITE_ERROR; + goto abort_due_to_error; } break; } -/* Opcode: Transaction P1 P2 * * * +/* Opcode: Transaction P1 P2 P3 P4 P5 ** -** Begin a transaction. The transaction ends when a Commit or Rollback -** opcode is encountered. Depending on the ON CONFLICT setting, the -** transaction might also be rolled back if an error is encountered. +** Begin a transaction on database P1 if a transaction is not already +** active. +** If P2 is non-zero, then a write-transaction is started, or if a +** read-transaction is already active, it is upgraded to a write-transaction. +** If P2 is zero, then a read-transaction is started. ** ** P1 is the index of the database file on which the transaction is ** started. Index 0 is the main database file and index 1 is the ** file used for temporary tables. Indices of 2 or more are used for ** attached databases. ** -** If P2 is non-zero, then a write-transaction is started. A RESERVED lock is -** obtained on the database file when a write-transaction is started. No -** other process can start another write transaction while this transaction is -** underway. Starting a write transaction also creates a rollback journal. A -** write transaction must be started before any changes can be made to the -** database. If P2 is greater than or equal to 2 then an EXCLUSIVE lock is -** also obtained on the file. -** ** If a write-transaction is started and the Vdbe.usesStmtJournal flag is ** true (this flag is set if the Vdbe may modify more than one row and may ** throw an ABORT exception), a statement transaction may also be opened. @@ -69453,15 +81189,26 @@ case OP_AutoCommit: { ** entire transaction. If no error is encountered, the statement transaction ** will automatically commit when the VDBE halts. ** -** If P2 is zero, then a read-lock is obtained on the database file. +** If P5!=0 then this opcode also checks the schema cookie against P3 +** and the schema generation counter against P4. +** The cookie changes its value whenever the database schema changes. +** This operation is used to detect when that the cookie has changed +** and that the current process needs to reread the schema. If the schema +** cookie in P3 differs from the schema cookie in the database header or +** if the schema generation counter in P4 differs from the current +** generation counter, then an SQLITE_SCHEMA error is raised and execution +** halts. The sqlite3_step() wrapper function might then reprepare the +** statement and rerun it from the beginning. */ case OP_Transaction: { Btree *pBt; + int iMeta; + int iGen; assert( p->bIsReader ); assert( p->readOnly==0 || pOp->p2==0 ); assert( pOp->p1>=0 && pOp->p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p1))!=0 ); + assert( DbMaskTest(p->btreeMask, pOp->p1) ); if( pOp->p2 && (db->flags & SQLITE_QueryOnly)!=0 ){ rc = SQLITE_READONLY; goto abort_due_to_error; @@ -69470,12 +81217,14 @@ case OP_Transaction: { if( pBt ){ rc = sqlite3BtreeBeginTrans(pBt, pOp->p2); - if( rc==SQLITE_BUSY ){ - p->pc = pc; - p->rc = rc = SQLITE_BUSY; - goto vdbe_return; - } + testcase( rc==SQLITE_BUSY_SNAPSHOT ); + testcase( rc==SQLITE_BUSY_RECOVERY ); if( rc!=SQLITE_OK ){ + if( (rc&0xff)==SQLITE_BUSY ){ + p->pc = (int)(pOp - aOp); + p->rc = rc; + goto vdbe_return; + } goto abort_due_to_error; } @@ -69500,115 +81249,19 @@ case OP_Transaction: { p->nStmtDefCons = db->nDeferredCons; p->nStmtDefImmCons = db->nDeferredImmCons; } - } - break; -} -/* Opcode: ReadCookie P1 P2 P3 * * -** -** Read cookie number P3 from database P1 and write it into register P2. -** P3==1 is the schema version. P3==2 is the database format. -** P3==3 is the recommended pager cache size, and so forth. P1==0 is -** the main database file and P1==1 is the database file used to store -** temporary tables. -** -** There must be a read-lock on the database (either a transaction -** must be started or there must be an open cursor) before -** executing this instruction. -*/ -case OP_ReadCookie: { /* out2-prerelease */ - int iMeta; - int iDb; - int iCookie; - - assert( p->bIsReader ); - iDb = pOp->p1; - iCookie = pOp->p3; - assert( pOp->p3=0 && iDbnDb ); - assert( db->aDb[iDb].pBt!=0 ); - assert( (p->btreeMask & (((yDbMask)1)<aDb[iDb].pBt, iCookie, (u32 *)&iMeta); - pOut->u.i = iMeta; - break; -} - -/* Opcode: SetCookie P1 P2 P3 * * -** -** Write the content of register P3 (interpreted as an integer) -** into cookie number P2 of database P1. P2==1 is the schema version. -** P2==2 is the database format. P2==3 is the recommended pager cache -** size, and so forth. P1==0 is the main database file and P1==1 is the -** database file used to store temporary tables. -** -** A transaction must be started before executing this opcode. -*/ -case OP_SetCookie: { /* in3 */ - Db *pDb; - assert( pOp->p2p1>=0 && pOp->p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p1))!=0 ); - assert( p->readOnly==0 ); - pDb = &db->aDb[pOp->p1]; - assert( pDb->pBt!=0 ); - assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) ); - pIn3 = &aMem[pOp->p3]; - sqlite3VdbeMemIntegerify(pIn3); - /* See note about index shifting on OP_ReadCookie */ - rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, (int)pIn3->u.i); - if( pOp->p2==BTREE_SCHEMA_VERSION ){ - /* When the schema cookie changes, record the new cookie internally */ - pDb->pSchema->schema_cookie = (int)pIn3->u.i; - db->flags |= SQLITE_InternChanges; - }else if( pOp->p2==BTREE_FILE_FORMAT ){ - /* Record changes in the file format */ - pDb->pSchema->file_format = (u8)pIn3->u.i; - } - if( pOp->p1==1 ){ - /* Invalidate all prepared statements whenever the TEMP database - ** schema is changed. Ticket #1644 */ - sqlite3ExpirePreparedStatements(db); - p->expired = 0; - } - break; -} - -/* Opcode: VerifyCookie P1 P2 P3 * * -** -** Check the value of global database parameter number 0 (the -** schema version) and make sure it is equal to P2 and that the -** generation counter on the local schema parse equals P3. -** -** P1 is the database number which is 0 for the main database file -** and 1 for the file holding temporary tables and some higher number -** for auxiliary databases. -** -** The cookie changes its value whenever the database schema changes. -** This operation is used to detect when that the cookie has changed -** and that the current process needs to reread the schema. -** -** Either a transaction needs to have been started or an OP_Open needs -** to be executed (to establish a read lock) before this opcode is -** invoked. -*/ -case OP_VerifyCookie: { - int iMeta; - int iGen; - Btree *pBt; - - assert( pOp->p1>=0 && pOp->p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p1))!=0 ); - assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) ); - assert( p->bIsReader ); - pBt = db->aDb[pOp->p1].pBt; - if( pBt ){ + /* Gather the schema version number for checking: + ** IMPLEMENTATION-OF: R-03189-51135 As each SQL statement runs, the schema + ** version is checked to ensure that the schema has not changed since the + ** SQL statement was prepared. + */ sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta); iGen = db->aDb[pOp->p1].pSchema->iGeneration; }else{ iGen = iMeta = 0; } - if( iMeta!=pOp->p2 || iGen!=pOp->p3 ){ + assert( pOp->p5==0 || pOp->p4type==P4_INT32 ); + if( pOp->p5 && (iMeta!=pOp->p3 || iGen!=pOp->p4.i) ){ sqlite3DbFree(db, p->zErrMsg); p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed"); /* If the schema-cookie from the database file matches the cookie @@ -69627,10 +81280,80 @@ case OP_VerifyCookie: { if( db->aDb[pOp->p1].pSchema->schema_cookie!=iMeta ){ sqlite3ResetOneSchema(db, pOp->p1); } - p->expired = 1; rc = SQLITE_SCHEMA; } + if( rc ) goto abort_due_to_error; + break; +} + +/* Opcode: ReadCookie P1 P2 P3 * * +** +** Read cookie number P3 from database P1 and write it into register P2. +** P3==1 is the schema version. P3==2 is the database format. +** P3==3 is the recommended pager cache size, and so forth. P1==0 is +** the main database file and P1==1 is the database file used to store +** temporary tables. +** +** There must be a read-lock on the database (either a transaction +** must be started or there must be an open cursor) before +** executing this instruction. +*/ +case OP_ReadCookie: { /* out2 */ + int iMeta; + int iDb; + int iCookie; + + assert( p->bIsReader ); + iDb = pOp->p1; + iCookie = pOp->p3; + assert( pOp->p3=0 && iDbnDb ); + assert( db->aDb[iDb].pBt!=0 ); + assert( DbMaskTest(p->btreeMask, iDb) ); + + sqlite3BtreeGetMeta(db->aDb[iDb].pBt, iCookie, (u32 *)&iMeta); + pOut = out2Prerelease(p, pOp); + pOut->u.i = iMeta; + break; +} + +/* Opcode: SetCookie P1 P2 P3 * * +** +** Write the integer value P3 into cookie number P2 of database P1. +** P2==1 is the schema version. P2==2 is the database format. +** P2==3 is the recommended pager cache +** size, and so forth. P1==0 is the main database file and P1==1 is the +** database file used to store temporary tables. +** +** A transaction must be started before executing this opcode. +*/ +case OP_SetCookie: { + Db *pDb; + assert( pOp->p2p1>=0 && pOp->p1nDb ); + assert( DbMaskTest(p->btreeMask, pOp->p1) ); + assert( p->readOnly==0 ); + pDb = &db->aDb[pOp->p1]; + assert( pDb->pBt!=0 ); + assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) ); + /* See note about index shifting on OP_ReadCookie */ + rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, pOp->p3); + if( pOp->p2==BTREE_SCHEMA_VERSION ){ + /* When the schema cookie changes, record the new cookie internally */ + pDb->pSchema->schema_cookie = pOp->p3; + db->flags |= SQLITE_InternChanges; + }else if( pOp->p2==BTREE_FILE_FORMAT ){ + /* Record changes in the file format */ + pDb->pSchema->file_format = pOp->p3; + } + if( pOp->p1==1 ){ + /* Invalidate all prepared statements whenever the TEMP database + ** schema is changed. Ticket #1644 */ + sqlite3ExpirePreparedStatements(db); + p->expired = 0; + } + if( rc ) goto abort_due_to_error; break; } @@ -69663,7 +81386,21 @@ case OP_VerifyCookie: { ** sequence of the index being opened. Otherwise, if P4 is an integer ** value, it is set to the number of columns in the table. ** -** See also OpenWrite. +** See also: OpenWrite, ReopenIdx +*/ +/* Opcode: ReopenIdx P1 P2 P3 P4 P5 +** Synopsis: root=P2 iDb=P3 +** +** The ReopenIdx opcode works exactly like ReadOpen except that it first +** checks to see if the cursor on P1 is already open with a root page +** number of P2 and if it is this opcode becomes a no-op. In other words, +** if the cursor is already open, do not reopen it. +** +** The ReopenIdx opcode may only be used with P5==0 and with P4 being +** a P4_KEYINFO object. Furthermore, the P3 value must be the same as +** every other ReopenIdx or OpenRead for the same cursor number. +** +** See the OpenRead opcode documentation for additional information. */ /* Opcode: OpenWrite P1 P2 P3 P4 P5 ** Synopsis: root=P2 iDb=P3 @@ -69685,8 +81422,7 @@ case OP_VerifyCookie: { ** ** See also OpenRead. */ -case OP_OpenRead: -case OP_OpenWrite: { +case OP_ReopenIdx: { int nField; KeyInfo *pKeyInfo; int p2; @@ -69696,14 +81432,26 @@ case OP_OpenWrite: { VdbeCursor *pCur; Db *pDb; - assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR))==pOp->p5 ); - assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 ); + assert( pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ ); + assert( pOp->p4type==P4_KEYINFO ); + pCur = p->apCsr[pOp->p1]; + if( pCur && pCur->pgnoRoot==(u32)pOp->p2 ){ + assert( pCur->iDb==pOp->p3 ); /* Guaranteed by the code generator */ + goto open_cursor_set_hints; + } + /* If the cursor is not currently open or is open on a different + ** index, then fall through into OP_OpenRead to force a reopen */ +case OP_OpenRead: +case OP_OpenWrite: + + assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 || pOp->p5==OPFLAG_SEEKEQ ); assert( p->bIsReader ); - assert( pOp->opcode==OP_OpenRead || p->readOnly==0 ); + assert( pOp->opcode==OP_OpenRead || pOp->opcode==OP_ReopenIdx + || p->readOnly==0 ); if( p->expired ){ - rc = SQLITE_ABORT; - break; + rc = SQLITE_ABORT_ROLLBACK; + goto abort_due_to_error; } nField = 0; @@ -69711,12 +81459,13 @@ case OP_OpenWrite: { p2 = pOp->p2; iDb = pOp->p3; assert( iDb>=0 && iDbnDb ); - assert( (p->btreeMask & (((yDbMask)1)<btreeMask, iDb) ); pDb = &db->aDb[iDb]; pX = pDb->pBt; assert( pX!=0 ); if( pOp->opcode==OP_OpenWrite ){ - wrFlag = 1; + assert( OPFLAG_FORDELETE==BTREE_FORDELETE ); + wrFlag = BTREE_WRCSR | (pOp->p5 & OPFLAG_FORDELETE); assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( pDb->pSchema->file_format < p->minWriteFileFormat ){ p->minWriteFileFormat = pDb->pSchema->file_format; @@ -69726,7 +81475,7 @@ case OP_OpenWrite: { } if( pOp->p5 & OPFLAG_P2ISREG ){ assert( p2>0 ); - assert( p2<=(p->nMem-p->nCursor) ); + assert( p2<=(p->nMem+1 - p->nCursor) ); pIn2 = &aMem[p2]; assert( memIsValid(pIn2) ); assert( (pIn2->flags & MEM_Int)!=0 ); @@ -69736,10 +81485,7 @@ case OP_OpenWrite: { ** that opcode will always set the p2 value to 2 or more or else fail. ** If there were a failure, the prepared statement would have halted ** before reaching this instruction. */ - if( NEVER(p2<2) ) { - rc = SQLITE_CORRUPT_BKPT; - goto abort_due_to_error; - } + assert( p2>=2 ); } if( pOp->p4type==P4_KEYINFO ){ pKeyInfo = pOp->p4.pKeyInfo; @@ -69752,24 +81498,32 @@ case OP_OpenWrite: { assert( pOp->p1>=0 ); assert( nField>=0 ); testcase( nField==0 ); /* Table with INTEGER PRIMARY KEY and nothing else */ - pCur = allocateCursor(p, pOp->p1, nField, iDb, 1); + pCur = allocateCursor(p, pOp->p1, nField, iDb, CURTYPE_BTREE); if( pCur==0 ) goto no_mem; pCur->nullRow = 1; pCur->isOrdered = 1; - rc = sqlite3BtreeCursor(pX, p2, wrFlag, pKeyInfo, pCur->pCursor); + pCur->pgnoRoot = p2; +#ifdef SQLITE_DEBUG + pCur->wrFlag = wrFlag; +#endif + rc = sqlite3BtreeCursor(pX, p2, wrFlag, pKeyInfo, pCur->uc.pCursor); pCur->pKeyInfo = pKeyInfo; - assert( OPFLAG_BULKCSR==BTREE_BULKLOAD ); - sqlite3BtreeCursorHints(pCur->pCursor, (pOp->p5 & OPFLAG_BULKCSR)); - - /* Since it performs no memory allocation or IO, the only value that - ** sqlite3BtreeCursor() may return is SQLITE_OK. */ - assert( rc==SQLITE_OK ); - /* Set the VdbeCursor.isTable variable. Previous versions of ** SQLite used to check if the root-page flags were sane at this point ** and report database corruption if they were not, but this check has ** since moved into the btree layer. */ pCur->isTable = pOp->p4type!=P4_KEYINFO; + +open_cursor_set_hints: + assert( OPFLAG_BULKCSR==BTREE_BULKLOAD ); + assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ ); + testcase( pOp->p5 & OPFLAG_BULKCSR ); +#ifdef SQLITE_ENABLE_CURSOR_HINTS + testcase( pOp->p2 & OPFLAG_SEEKEQ ); +#endif + sqlite3BtreeCursorHintFlags(pCur->uc.pCursor, + (pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ))); + if( rc ) goto abort_due_to_error; break; } @@ -69812,13 +81566,14 @@ case OP_OpenEphemeral: { SQLITE_OPEN_TRANSIENT_DB; assert( pOp->p1>=0 ); assert( pOp->p2>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1); + pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_BTREE); if( pCx==0 ) goto no_mem; pCx->nullRow = 1; - rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->pBt, + pCx->isEphemeral = 1; + rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pCx->pBtx, BTREE_OMIT_JOURNAL | BTREE_SINGLE | pOp->p5, vfsFlags); if( rc==SQLITE_OK ){ - rc = sqlite3BtreeBeginTrans(pCx->pBt, 1); + rc = sqlite3BtreeBeginTrans(pCx->pBtx, 1); } if( rc==SQLITE_OK ){ /* If a transient index is required, create it by calling @@ -69826,55 +81581,79 @@ case OP_OpenEphemeral: { ** opening it. If a transient table is required, just use the ** automatically created table with root-page 1 (an BLOB_INTKEY table). */ - if( (pKeyInfo = pOp->p4.pKeyInfo)!=0 ){ + if( (pCx->pKeyInfo = pKeyInfo = pOp->p4.pKeyInfo)!=0 ){ int pgno; assert( pOp->p4type==P4_KEYINFO ); - rc = sqlite3BtreeCreateTable(pCx->pBt, &pgno, BTREE_BLOBKEY | pOp->p5); + rc = sqlite3BtreeCreateTable(pCx->pBtx, &pgno, BTREE_BLOBKEY | pOp->p5); if( rc==SQLITE_OK ){ assert( pgno==MASTER_ROOT+1 ); assert( pKeyInfo->db==db ); assert( pKeyInfo->enc==ENC(db) ); - pCx->pKeyInfo = pKeyInfo; - rc = sqlite3BtreeCursor(pCx->pBt, pgno, 1, pKeyInfo, pCx->pCursor); + rc = sqlite3BtreeCursor(pCx->pBtx, pgno, BTREE_WRCSR, + pKeyInfo, pCx->uc.pCursor); } pCx->isTable = 0; }else{ - rc = sqlite3BtreeCursor(pCx->pBt, MASTER_ROOT, 1, 0, pCx->pCursor); + rc = sqlite3BtreeCursor(pCx->pBtx, MASTER_ROOT, BTREE_WRCSR, + 0, pCx->uc.pCursor); pCx->isTable = 1; } } + if( rc ) goto abort_due_to_error; pCx->isOrdered = (pOp->p5!=BTREE_UNORDERED); break; } -/* Opcode: SorterOpen P1 * * P4 * +/* Opcode: SorterOpen P1 P2 P3 P4 * ** ** This opcode works like OP_OpenEphemeral except that it opens ** a transient index that is specifically designed to sort large ** tables using an external merge-sort algorithm. +** +** If argument P3 is non-zero, then it indicates that the sorter may +** assume that a stable sort considering the first P3 fields of each +** key is sufficient to produce the required results. */ case OP_SorterOpen: { VdbeCursor *pCx; assert( pOp->p1>=0 ); assert( pOp->p2>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, 1); + pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_SORTER); if( pCx==0 ) goto no_mem; pCx->pKeyInfo = pOp->p4.pKeyInfo; assert( pCx->pKeyInfo->db==db ); assert( pCx->pKeyInfo->enc==ENC(db) ); - rc = sqlite3VdbeSorterInit(db, pCx); + rc = sqlite3VdbeSorterInit(db, pOp->p3, pCx); + if( rc ) goto abort_due_to_error; break; } -/* Opcode: OpenPseudo P1 P2 P3 * P5 -** Synopsis: content in r[P2@P3] +/* Opcode: SequenceTest P1 P2 * * * +** Synopsis: if( cursor[P1].ctr++ ) pc = P2 +** +** P1 is a sorter cursor. If the sequence counter is currently zero, jump +** to P2. Regardless of whether or not the jump is taken, increment the +** the sequence value. +*/ +case OP_SequenceTest: { + VdbeCursor *pC; + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( isSorter(pC) ); + if( (pC->seqCount++)==0 ){ + goto jump_to_p2; + } + break; +} + +/* Opcode: OpenPseudo P1 P2 P3 * * +** Synopsis: P3 columns in r[P2] ** ** Open a new cursor that points to a fake table that contains a single -** row of data. The content of that one row in the content of memory -** register P2 when P5==0. In other words, cursor P1 becomes an alias for the -** MEM_Blob content contained in register P2. When P5==1, then the -** row is represented by P3 consecutive registers beginning with P2. +** row of data. The content of that one row is the content of memory +** register P2. In other words, cursor P1 becomes an alias for the +** MEM_Blob content contained in register P2. ** ** A pseudo-table created by this opcode is used to hold a single ** row output from the sorter so that the row can be decomposed into @@ -69889,12 +81668,12 @@ case OP_OpenPseudo: { assert( pOp->p1>=0 ); assert( pOp->p3>=0 ); - pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, 0); + pCx = allocateCursor(p, pOp->p1, pOp->p3, -1, CURTYPE_PSEUDO); if( pCx==0 ) goto no_mem; pCx->nullRow = 1; - pCx->pseudoTableReg = pOp->p2; + pCx->uc.pseudoTableReg = pOp->p2; pCx->isTable = 1; - pCx->multiPseudo = pOp->p5; + assert( pOp->p5==0 ); break; } @@ -69910,7 +81689,27 @@ case OP_Close: { break; } -/* Opcode: SeekGe P1 P2 P3 P4 * +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK +/* Opcode: ColumnsUsed P1 * * P4 * +** +** This opcode (which only exists if SQLite was compiled with +** SQLITE_ENABLE_COLUMN_USED_MASK) identifies which columns of the +** table or index for cursor P1 are used. P4 is a 64-bit integer +** (P4_INT64) in which the first 63 bits are one for each of the +** first 63 columns of the table or index that are actually used +** by the cursor. The high-order bit is set if any column after +** the 64th is used. +*/ +case OP_ColumnsUsed: { + VdbeCursor *pC; + pC = p->apCsr[pOp->p1]; + assert( pC->eCurType==CURTYPE_BTREE ); + pC->maskUsed = *(u64*)pOp->p4.pI64; + break; +} +#endif + +/* Opcode: SeekGE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** ** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), @@ -69922,9 +81721,20 @@ case OP_Close: { ** is greater than or equal to the key value. If there are no records ** greater than or equal to the key and P2 is not zero, then jump to P2. ** -** See also: Found, NotFound, Distinct, SeekLt, SeekGt, SeekLe +** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this +** opcode will always land on a record that equally equals the key, or +** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this +** opcode must be followed by an IdxLE opcode with the same arguments. +** The IdxLE opcode will be skipped if this opcode succeeds, but the +** IdxLE opcode will be used on subsequent loop iterations. +** +** This opcode leaves the cursor configured to move in forward order, +** from the beginning toward the end. In other words, the cursor is +** configured to use Next, not Prev. +** +** See also: Found, NotFound, SeekLt, SeekGt, SeekLe */ -/* Opcode: SeekGt P1 P2 P3 P4 * +/* Opcode: SeekGT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** ** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), @@ -69936,9 +81746,13 @@ case OP_Close: { ** is greater than the key value. If there are no records greater than ** the key and P2 is not zero, then jump to P2. ** -** See also: Found, NotFound, Distinct, SeekLt, SeekGe, SeekLe +** This opcode leaves the cursor configured to move in forward order, +** from the beginning toward the end. In other words, the cursor is +** configured to use Next, not Prev. +** +** See also: Found, NotFound, SeekLt, SeekGe, SeekLe */ -/* Opcode: SeekLt P1 P2 P3 P4 * +/* Opcode: SeekLT P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** ** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), @@ -69950,9 +81764,13 @@ case OP_Close: { ** is less than the key value. If there are no records less than ** the key and P2 is not zero, then jump to P2. ** -** See also: Found, NotFound, Distinct, SeekGt, SeekGe, SeekLe +** This opcode leaves the cursor configured to move in reverse order, +** from the end toward the beginning. In other words, the cursor is +** configured to use Prev, not Next. +** +** See also: Found, NotFound, SeekGt, SeekGe, SeekLe */ -/* Opcode: SeekLe P1 P2 P3 P4 * +/* Opcode: SeekLE P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** ** If cursor P1 refers to an SQL table (B-Tree that uses integer keys), @@ -69964,39 +81782,61 @@ case OP_Close: { ** is less than or equal to the key value. If there are no records ** less than or equal to the key and P2 is not zero, then jump to P2. ** -** See also: Found, NotFound, Distinct, SeekGt, SeekGe, SeekLt +** This opcode leaves the cursor configured to move in reverse order, +** from the end toward the beginning. In other words, the cursor is +** configured to use Prev, not Next. +** +** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this +** opcode will always land on a record that equally equals the key, or +** else jump immediately to P2. When the cursor is OPFLAG_SEEKEQ, this +** opcode must be followed by an IdxGE opcode with the same arguments. +** The IdxGE opcode will be skipped if this opcode succeeds, but the +** IdxGE opcode will be used on subsequent loop iterations. +** +** See also: Found, NotFound, SeekGt, SeekGe, SeekLt */ -case OP_SeekLt: /* jump, in3 */ -case OP_SeekLe: /* jump, in3 */ -case OP_SeekGe: /* jump, in3 */ -case OP_SeekGt: { /* jump, in3 */ - int res; - int oc; - VdbeCursor *pC; - UnpackedRecord r; - int nField; - i64 iKey; /* The rowid we are to seek to */ +case OP_SeekLT: /* jump, in3 */ +case OP_SeekLE: /* jump, in3 */ +case OP_SeekGE: /* jump, in3 */ +case OP_SeekGT: { /* jump, in3 */ + int res; /* Comparison result */ + int oc; /* Opcode */ + VdbeCursor *pC; /* The cursor to seek */ + UnpackedRecord r; /* The key to seek for */ + int nField; /* Number of columns or fields in the key */ + i64 iKey; /* The rowid we are to seek to */ + int eqOnly; /* Only interested in == results */ assert( pOp->p1>=0 && pOp->p1nCursor ); assert( pOp->p2!=0 ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - assert( pC->pseudoTableReg==0 ); - assert( OP_SeekLe == OP_SeekLt+1 ); - assert( OP_SeekGe == OP_SeekLt+2 ); - assert( OP_SeekGt == OP_SeekLt+3 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( OP_SeekLE == OP_SeekLT+1 ); + assert( OP_SeekGE == OP_SeekLT+2 ); + assert( OP_SeekGT == OP_SeekLT+3 ); assert( pC->isOrdered ); - assert( pC->pCursor!=0 ); + assert( pC->uc.pCursor!=0 ); oc = pOp->opcode; + eqOnly = 0; pC->nullRow = 0; +#ifdef SQLITE_DEBUG + pC->seekOp = pOp->opcode; +#endif + if( pC->isTable ){ + /* The BTREE_SEEK_EQ flag is only set on index cursors */ + assert( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ)==0 + || CORRUPT_DB ); + /* The input value in P3 might be of any type: integer, real, string, ** blob, or NULL. But it needs to be an integer before we can do - ** the seek, so covert it. */ + ** the seek, so convert it. */ pIn3 = &aMem[pOp->p3]; - applyNumericAffinity(pIn3); + if( (pIn3->flags & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){ + applyNumericAffinity(pIn3, 0); + } iKey = sqlite3VdbeIntValue(pIn3); - pC->rowidIsValid = 0; /* If the P3 value could not be converted into an integer without ** loss of information, then special processing is required... */ @@ -70004,7 +81844,7 @@ case OP_SeekGt: { /* jump, in3 */ if( (pIn3->flags & MEM_Real)==0 ){ /* If the P3 value cannot be converted into any kind of a number, ** then the seek is not possible, so jump to P2 */ - pc = pOp->p2 - 1; + VdbeBranchTaken(1,2); goto jump_to_p2; break; } @@ -70015,31 +81855,42 @@ case OP_SeekGt: { /* jump, in3 */ ** (x > 4.9) -> (x >= 5) ** (x <= 4.9) -> (x < 5) */ - if( pIn3->r<(double)iKey ){ - assert( OP_SeekGe==(OP_SeekGt-1) ); - assert( OP_SeekLt==(OP_SeekLe-1) ); - assert( (OP_SeekLe & 0x0001)==(OP_SeekGt & 0x0001) ); - if( (oc & 0x0001)==(OP_SeekGt & 0x0001) ) oc--; + if( pIn3->u.r<(double)iKey ){ + assert( OP_SeekGE==(OP_SeekGT-1) ); + assert( OP_SeekLT==(OP_SeekLE-1) ); + assert( (OP_SeekLE & 0x0001)==(OP_SeekGT & 0x0001) ); + if( (oc & 0x0001)==(OP_SeekGT & 0x0001) ) oc--; } /* If the approximation iKey is smaller than the actual real search ** term, substitute <= for < and > for >=. */ - else if( pIn3->r>(double)iKey ){ - assert( OP_SeekLe==(OP_SeekLt+1) ); - assert( OP_SeekGt==(OP_SeekGe+1) ); - assert( (OP_SeekLt & 0x0001)==(OP_SeekGe & 0x0001) ); - if( (oc & 0x0001)==(OP_SeekLt & 0x0001) ) oc++; + else if( pIn3->u.r>(double)iKey ){ + assert( OP_SeekLE==(OP_SeekLT+1) ); + assert( OP_SeekGT==(OP_SeekGE+1) ); + assert( (OP_SeekLT & 0x0001)==(OP_SeekGE & 0x0001) ); + if( (oc & 0x0001)==(OP_SeekLT & 0x0001) ) oc++; } } - rc = sqlite3BtreeMovetoUnpacked(pC->pCursor, 0, (u64)iKey, 0, &res); + rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, 0, (u64)iKey, 0, &res); + pC->movetoTarget = iKey; /* Used by OP_Delete */ if( rc!=SQLITE_OK ){ goto abort_due_to_error; } - if( res==0 ){ - pC->rowidIsValid = 1; - pC->lastRowid = iKey; - } }else{ + /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and + ** OP_SeekLE opcodes are allowed, and these must be immediately followed + ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key. + */ + if( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ) ){ + eqOnly = 1; + assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE ); + assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT ); + assert( pOp[1].p1==pOp[0].p1 ); + assert( pOp[1].p2==pOp[0].p2 ); + assert( pOp[1].p3==pOp[0].p3 ); + assert( pOp[1].p4.i==pOp[0].p4.i ); + } + nField = pOp->p4.i; assert( pOp->p4type==P4_INT32 ); assert( nField>0 ); @@ -70047,89 +81898,70 @@ case OP_SeekGt: { /* jump, in3 */ r.nField = (u16)nField; /* The next line of code computes as follows, only faster: - ** if( oc==OP_SeekGt || oc==OP_SeekLe ){ - ** r.flags = UNPACKED_INCRKEY; + ** if( oc==OP_SeekGT || oc==OP_SeekLE ){ + ** r.default_rc = -1; ** }else{ - ** r.flags = 0; + ** r.default_rc = +1; ** } */ - r.flags = (u8)(UNPACKED_INCRKEY * (1 & (oc - OP_SeekLt))); - assert( oc!=OP_SeekGt || r.flags==UNPACKED_INCRKEY ); - assert( oc!=OP_SeekLe || r.flags==UNPACKED_INCRKEY ); - assert( oc!=OP_SeekGe || r.flags==0 ); - assert( oc!=OP_SeekLt || r.flags==0 ); + r.default_rc = ((1 & (oc - OP_SeekLT)) ? -1 : +1); + assert( oc!=OP_SeekGT || r.default_rc==-1 ); + assert( oc!=OP_SeekLE || r.default_rc==-1 ); + assert( oc!=OP_SeekGE || r.default_rc==+1 ); + assert( oc!=OP_SeekLT || r.default_rc==+1 ); r.aMem = &aMem[pOp->p3]; #ifdef SQLITE_DEBUG { int i; for(i=0; ipCursor, &r, 0, 0, &res); + r.eqSeen = 0; + rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, &r, 0, 0, &res); if( rc!=SQLITE_OK ){ goto abort_due_to_error; } - pC->rowidIsValid = 0; + if( eqOnly && r.eqSeen==0 ){ + assert( res!=0 ); + goto seek_not_found; + } } pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; #ifdef SQLITE_TEST sqlite3_search_count++; #endif - if( oc>=OP_SeekGe ){ assert( oc==OP_SeekGe || oc==OP_SeekGt ); - if( res<0 || (res==0 && oc==OP_SeekGt) ){ - rc = sqlite3BtreeNext(pC->pCursor, &res); + if( oc>=OP_SeekGE ){ assert( oc==OP_SeekGE || oc==OP_SeekGT ); + if( res<0 || (res==0 && oc==OP_SeekGT) ){ + res = 0; + rc = sqlite3BtreeNext(pC->uc.pCursor, &res); if( rc!=SQLITE_OK ) goto abort_due_to_error; - pC->rowidIsValid = 0; }else{ res = 0; } }else{ - assert( oc==OP_SeekLt || oc==OP_SeekLe ); - if( res>0 || (res==0 && oc==OP_SeekLt) ){ - rc = sqlite3BtreePrevious(pC->pCursor, &res); + assert( oc==OP_SeekLT || oc==OP_SeekLE ); + if( res>0 || (res==0 && oc==OP_SeekLT) ){ + res = 0; + rc = sqlite3BtreePrevious(pC->uc.pCursor, &res); if( rc!=SQLITE_OK ) goto abort_due_to_error; - pC->rowidIsValid = 0; }else{ /* res might be negative because the table is empty. Check to ** see if this is the case. */ - res = sqlite3BtreeEof(pC->pCursor); + res = sqlite3BtreeEof(pC->uc.pCursor); } } +seek_not_found: assert( pOp->p2>0 ); + VdbeBranchTaken(res!=0,2); if( res ){ - pc = pOp->p2 - 1; + goto jump_to_p2; + }else if( eqOnly ){ + assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT ); + pOp++; /* Skip the OP_IdxLt or OP_IdxGT that follows */ } break; } -/* Opcode: Seek P1 P2 * * * -** Synopsis: intkey=r[P2] -** -** P1 is an open table cursor and P2 is a rowid integer. Arrange -** for P1 to move so that it points to the rowid given by P2. -** -** This is actually a deferred seek. Nothing actually happens until -** the cursor is used to read a record. That way, if no reads -** occur, no unnecessary I/O happens. -*/ -case OP_Seek: { /* in2 */ - VdbeCursor *pC; - - assert( pOp->p1>=0 && pOp->p1nCursor ); - pC = p->apCsr[pOp->p1]; - assert( pC!=0 ); - assert( pC->pCursor!=0 ); - assert( pC->isTable ); - pC->nullRow = 0; - pIn2 = &aMem[pOp->p2]; - pC->movetoTarget = sqlite3VdbeIntValue(pIn2); - pC->rowidIsValid = 0; - pC->deferredMoveto = 1; - break; -} - - /* Opcode: Found P1 P2 P3 P4 * ** Synopsis: key=r[P3@P4] ** @@ -70141,6 +81973,10 @@ case OP_Seek: { /* in2 */ ** is a prefix of any entry in P1 then a jump is made to P2 and ** P1 is left pointing at the matching entry. ** +** This operation leaves the cursor in a state where it can be +** advanced in the forward direction. The Next instruction will work, +** but not the Prev instruction. +** ** See also: NotFound, NoConflict, NotExists. SeekGe */ /* Opcode: NotFound P1 P2 P3 P4 * @@ -70156,6 +81992,10 @@ case OP_Seek: { /* in2 */ ** falls through to the next instruction and P1 is left pointing at the ** matching entry. ** +** This operation leaves the cursor in a state where it cannot be +** advanced in either direction. In other words, the Next and Prev +** opcodes do not work after this operation. +** ** See also: Found, NotExists, NoConflict */ /* Opcode: NoConflict P1 P2 P3 P4 * @@ -70175,19 +82015,23 @@ case OP_Seek: { /* in2 */ ** This opcode is similar to OP_NotFound with the exceptions that the ** branch is always taken if any part of the search key input is NULL. ** +** This operation leaves the cursor in a state where it cannot be +** advanced in either direction. In other words, the Next and Prev +** opcodes do not work after this operation. +** ** See also: NotFound, Found, NotExists */ case OP_NoConflict: /* jump, in3 */ case OP_NotFound: /* jump, in3 */ case OP_Found: { /* jump, in3 */ int alreadyExists; + int takeJump; int ii; VdbeCursor *pC; int res; - char *pFree; + UnpackedRecord *pFree; UnpackedRecord *pIdxKey; UnpackedRecord r; - char aTempRec[ROUND8(sizeof(UnpackedRecord)) + sizeof(Mem)*4 + 7]; #ifdef SQLITE_TEST if( pOp->opcode!=OP_NoConflict ) sqlite3_found_count++; @@ -70197,52 +82041,50 @@ case OP_Found: { /* jump, in3 */ assert( pOp->p4type==P4_INT32 ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); +#ifdef SQLITE_DEBUG + pC->seekOp = pOp->opcode; +#endif pIn3 = &aMem[pOp->p3]; - assert( pC->pCursor!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); assert( pC->isTable==0 ); - pFree = 0; /* Not needed. Only used to suppress a compiler warning. */ if( pOp->p4.i>0 ){ r.pKeyInfo = pC->pKeyInfo; r.nField = (u16)pOp->p4.i; r.aMem = pIn3; #ifdef SQLITE_DEBUG - { - int i; - for(i=0; ip3+i, &r.aMem[i]); - } + for(ii=0; iip3+ii, &r.aMem[ii]); } #endif - r.flags = UNPACKED_PREFIX_MATCH; pIdxKey = &r; + pFree = 0; }else{ - pIdxKey = sqlite3VdbeAllocUnpackedRecord( - pC->pKeyInfo, aTempRec, sizeof(aTempRec), &pFree - ); + pFree = pIdxKey = sqlite3VdbeAllocUnpackedRecord(pC->pKeyInfo); if( pIdxKey==0 ) goto no_mem; assert( pIn3->flags & MEM_Blob ); - assert( (pIn3->flags & MEM_Zero)==0 ); /* zeroblobs already expanded */ + (void)ExpandBlob(pIn3); sqlite3VdbeRecordUnpack(pC->pKeyInfo, pIn3->n, pIn3->z, pIdxKey); - pIdxKey->flags |= UNPACKED_PREFIX_MATCH; } + pIdxKey->default_rc = 0; + takeJump = 0; if( pOp->opcode==OP_NoConflict ){ /* For the OP_NoConflict opcode, take the jump if any of the ** input fields are NULL, since any key with a NULL will not ** conflict */ - for(ii=0; iip2 - 1; + for(ii=0; iinField; ii++){ + if( pIdxKey->aMem[ii].flags & MEM_Null ){ + takeJump = 1; break; } } } - rc = sqlite3BtreeMovetoUnpacked(pC->pCursor, pIdxKey, 0, 0, &res); - if( pOp->p4.i==0 ){ - sqlite3DbFree(db, pFree); - } + rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, pIdxKey, 0, 0, &res); + if( pFree ) sqlite3DbFree(db, pFree); if( rc!=SQLITE_OK ){ - break; + goto abort_due_to_error; } pC->seekResult = res; alreadyExists = (res==0); @@ -70250,69 +82092,122 @@ case OP_Found: { /* jump, in3 */ pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; if( pOp->opcode==OP_Found ){ - if( alreadyExists ) pc = pOp->p2 - 1; + VdbeBranchTaken(alreadyExists!=0,2); + if( alreadyExists ) goto jump_to_p2; }else{ - if( !alreadyExists ) pc = pOp->p2 - 1; + VdbeBranchTaken(takeJump||alreadyExists==0,2); + if( takeJump || !alreadyExists ) goto jump_to_p2; } break; } +/* Opcode: SeekRowid P1 P2 P3 * * +** Synopsis: intkey=r[P3] +** +** P1 is the index of a cursor open on an SQL table btree (with integer +** keys). If register P3 does not contain an integer or if P1 does not +** contain a record with rowid P3 then jump immediately to P2. +** Or, if P2 is 0, raise an SQLITE_CORRUPT error. If P1 does contain +** a record with rowid P3 then +** leave the cursor pointing at that record and fall through to the next +** instruction. +** +** The OP_NotExists opcode performs the same operation, but with OP_NotExists +** the P3 register must be guaranteed to contain an integer value. With this +** opcode, register P3 might not contain an integer. +** +** The OP_NotFound opcode performs the same operation on index btrees +** (with arbitrary multi-value keys). +** +** This opcode leaves the cursor in a state where it cannot be advanced +** in either direction. In other words, the Next and Prev opcodes will +** not work following this opcode. +** +** See also: Found, NotFound, NoConflict, SeekRowid +*/ /* Opcode: NotExists P1 P2 P3 * * ** Synopsis: intkey=r[P3] ** ** P1 is the index of a cursor open on an SQL table btree (with integer ** keys). P3 is an integer rowid. If P1 does not contain a record with -** rowid P3 then jump immediately to P2. If P1 does contain a record -** with rowid P3 then leave the cursor pointing at that record and fall -** through to the next instruction. +** rowid P3 then jump immediately to P2. Or, if P2 is 0, raise an +** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then +** leave the cursor pointing at that record and fall through to the next +** instruction. +** +** The OP_SeekRowid opcode performs the same operation but also allows the +** P3 register to contain a non-integer value, in which case the jump is +** always taken. This opcode requires that P3 always contain an integer. ** ** The OP_NotFound opcode performs the same operation on index btrees ** (with arbitrary multi-value keys). ** -** See also: Found, NotFound, NoConflict +** This opcode leaves the cursor in a state where it cannot be advanced +** in either direction. In other words, the Next and Prev opcodes will +** not work following this opcode. +** +** See also: Found, NotFound, NoConflict, SeekRowid */ -case OP_NotExists: { /* jump, in3 */ +case OP_SeekRowid: { /* jump, in3 */ VdbeCursor *pC; BtCursor *pCrsr; int res; u64 iKey; + pIn3 = &aMem[pOp->p3]; + if( (pIn3->flags & MEM_Int)==0 ){ + applyAffinity(pIn3, SQLITE_AFF_NUMERIC, encoding); + if( (pIn3->flags & MEM_Int)==0 ) goto jump_to_p2; + } + /* Fall through into OP_NotExists */ +case OP_NotExists: /* jump, in3 */ pIn3 = &aMem[pOp->p3]; assert( pIn3->flags & MEM_Int ); assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); +#ifdef SQLITE_DEBUG + pC->seekOp = 0; +#endif assert( pC->isTable ); - assert( pC->pseudoTableReg==0 ); - pCrsr = pC->pCursor; + assert( pC->eCurType==CURTYPE_BTREE ); + pCrsr = pC->uc.pCursor; assert( pCrsr!=0 ); res = 0; iKey = pIn3->u.i; rc = sqlite3BtreeMovetoUnpacked(pCrsr, 0, iKey, 0, &res); - pC->lastRowid = pIn3->u.i; - pC->rowidIsValid = res==0 ?1:0; + assert( rc==SQLITE_OK || res==0 ); + pC->movetoTarget = iKey; /* Used by OP_Delete */ pC->nullRow = 0; pC->cacheStatus = CACHE_STALE; pC->deferredMoveto = 0; - if( res!=0 ){ - pc = pOp->p2 - 1; - assert( pC->rowidIsValid==0 ); - } + VdbeBranchTaken(res!=0,2); pC->seekResult = res; + if( res!=0 ){ + assert( rc==SQLITE_OK ); + if( pOp->p2==0 ){ + rc = SQLITE_CORRUPT_BKPT; + }else{ + goto jump_to_p2; + } + } + if( rc ) goto abort_due_to_error; break; } /* Opcode: Sequence P1 P2 * * * -** Synopsis: r[P2]=rowid +** Synopsis: r[P2]=cursor[P1].ctr++ ** ** Find the next available sequence number for cursor P1. ** Write the sequence number into register P2. ** The sequence number on the cursor is incremented after this ** instruction. */ -case OP_Sequence: { /* out2-prerelease */ +case OP_Sequence: { /* out2 */ assert( pOp->p1>=0 && pOp->p1nCursor ); assert( p->apCsr[pOp->p1]!=0 ); + assert( p->apCsr[pOp->p1]->eCurType!=CURTYPE_VTAB ); + pOut = out2Prerelease(p, pOp); pOut->u.i = p->apCsr[pOp->p1]->seqCount++; break; } @@ -70333,7 +82228,7 @@ case OP_Sequence: { /* out2-prerelease */ ** generated record number. This P3 mechanism is used to help implement the ** AUTOINCREMENT feature. */ -case OP_NewRowid: { /* out2-prerelease */ +case OP_NewRowid: { /* out2 */ i64 v; /* The new rowid */ VdbeCursor *pC; /* Cursor of table to get the new rowid */ int res; /* Result of an sqlite3BtreeLast() */ @@ -70343,12 +82238,13 @@ case OP_NewRowid: { /* out2-prerelease */ v = 0; res = 0; + pOut = out2Prerelease(p, pOp); assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - if( NEVER(pC->pCursor==0) ){ - /* The zero initialization above is all that is needed */ - }else{ + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); + { /* The next rowid or record number (different terms for the same ** thing) is obtained in a two-step algorithm. ** @@ -70375,59 +82271,53 @@ case OP_NewRowid: { /* out2-prerelease */ #endif if( !pC->useRandomRowid ){ - v = sqlite3BtreeGetCachedRowid(pC->pCursor); - if( v==0 ){ - rc = sqlite3BtreeLast(pC->pCursor, &res); - if( rc!=SQLITE_OK ){ - goto abort_due_to_error; - } - if( res ){ - v = 1; /* IMP: R-61914-48074 */ + rc = sqlite3BtreeLast(pC->uc.pCursor, &res); + if( rc!=SQLITE_OK ){ + goto abort_due_to_error; + } + if( res ){ + v = 1; /* IMP: R-61914-48074 */ + }else{ + assert( sqlite3BtreeCursorIsValid(pC->uc.pCursor) ); + v = sqlite3BtreeIntegerKey(pC->uc.pCursor); + if( v>=MAX_ROWID ){ + pC->useRandomRowid = 1; }else{ - assert( sqlite3BtreeCursorIsValid(pC->pCursor) ); - rc = sqlite3BtreeKeySize(pC->pCursor, &v); - assert( rc==SQLITE_OK ); /* Cannot fail following BtreeLast() */ - if( v>=MAX_ROWID ){ - pC->useRandomRowid = 1; - }else{ - v++; /* IMP: R-29538-34987 */ - } + v++; /* IMP: R-29538-34987 */ } } + } #ifndef SQLITE_OMIT_AUTOINCREMENT - if( pOp->p3 ){ + if( pOp->p3 ){ + /* Assert that P3 is a valid memory cell. */ + assert( pOp->p3>0 ); + if( p->pFrame ){ + for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent); /* Assert that P3 is a valid memory cell. */ - assert( pOp->p3>0 ); - if( p->pFrame ){ - for(pFrame=p->pFrame; pFrame->pParent; pFrame=pFrame->pParent); - /* Assert that P3 is a valid memory cell. */ - assert( pOp->p3<=pFrame->nMem ); - pMem = &pFrame->aMem[pOp->p3]; - }else{ - /* Assert that P3 is a valid memory cell. */ - assert( pOp->p3<=(p->nMem-p->nCursor) ); - pMem = &aMem[pOp->p3]; - memAboutToChange(p, pMem); - } - assert( memIsValid(pMem) ); - - REGISTER_TRACE(pOp->p3, pMem); - sqlite3VdbeMemIntegerify(pMem); - assert( (pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */ - if( pMem->u.i==MAX_ROWID || pC->useRandomRowid ){ - rc = SQLITE_FULL; /* IMP: R-12275-61338 */ - goto abort_due_to_error; - } - if( vu.i+1 ){ - v = pMem->u.i + 1; - } - pMem->u.i = v; + assert( pOp->p3<=pFrame->nMem ); + pMem = &pFrame->aMem[pOp->p3]; + }else{ + /* Assert that P3 is a valid memory cell. */ + assert( pOp->p3<=(p->nMem+1 - p->nCursor) ); + pMem = &aMem[pOp->p3]; + memAboutToChange(p, pMem); } -#endif + assert( memIsValid(pMem) ); - sqlite3BtreeSetCachedRowid(pC->pCursor, vp3, pMem); + sqlite3VdbeMemIntegerify(pMem); + assert( (pMem->flags & MEM_Int)!=0 ); /* mem(P3) holds an integer */ + if( pMem->u.i==MAX_ROWID || pC->useRandomRowid ){ + rc = SQLITE_FULL; /* IMP: R-17817-00630 */ + goto abort_due_to_error; + } + if( vu.i+1 ){ + v = pMem->u.i + 1; + } + pMem->u.i = v; } +#endif if( pC->useRandomRowid ){ /* IMPLEMENTATION-OF: R-07677-41881 If the largest ROWID is equal to the ** largest possible integer (9223372036854775807) then the database @@ -70435,32 +82325,21 @@ case OP_NewRowid: { /* out2-prerelease */ ** it finds one that is not previously used. */ assert( pOp->p3==0 ); /* We cannot be in random rowid mode if this is ** an AUTOINCREMENT table. */ - /* on the first attempt, simply do one more than previous */ - v = lastRowid; - v &= (MAX_ROWID>>1); /* ensure doesn't go negative */ - v++; /* ensure non-zero */ cnt = 0; - while( ((rc = sqlite3BtreeMovetoUnpacked(pC->pCursor, 0, (u64)v, + do{ + sqlite3_randomness(sizeof(v), &v); + v &= (MAX_ROWID>>1); v++; /* Ensure that v is greater than zero */ + }while( ((rc = sqlite3BtreeMovetoUnpacked(pC->uc.pCursor, 0, (u64)v, 0, &res))==SQLITE_OK) && (res==0) - && (++cnt<100)){ - /* collision - try another random rowid */ - sqlite3_randomness(sizeof(v), &v); - if( cnt<5 ){ - /* try "small" random rowids for the initial attempts */ - v &= 0xffffff; - }else{ - v &= (MAX_ROWID>>1); /* ensure doesn't go negative */ - } - v++; /* ensure non-zero */ - } - if( rc==SQLITE_OK && res==0 ){ + && (++cnt<100)); + if( rc ) goto abort_due_to_error; + if( res==0 ){ rc = SQLITE_FULL; /* IMP: R-38219-53002 */ goto abort_due_to_error; } assert( v>0 ); /* EV: R-40812-03570 */ } - pC->rowidIsValid = 0; pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; } @@ -70482,22 +82361,19 @@ case OP_NewRowid: { /* out2-prerelease */ ** then rowid is stored for subsequent return by the ** sqlite3_last_insert_rowid() function (otherwise it is unmodified). ** -** If the OPFLAG_USESEEKRESULT flag of P5 is set and if the result of -** the last seek operation (OP_NotExists) was a success, then this -** operation will not attempt to find the appropriate row before doing -** the insert but will instead overwrite the row that the cursor is -** currently pointing to. Presumably, the prior OP_NotExists opcode -** has already positioned the cursor correctly. This is an optimization -** that boosts performance by avoiding redundant seeks. +** If the OPFLAG_USESEEKRESULT flag of P5 is set, the implementation might +** run faster by avoiding an unnecessary seek on cursor P1. However, +** the OPFLAG_USESEEKRESULT flag must only be set if there have been no prior +** seeks on the cursor or if the most recent seek used a key equal to P3. ** ** If the OPFLAG_ISUPDATE flag is set, then this opcode is part of an ** UPDATE operation. Otherwise (if the flag is clear) then this opcode ** is part of an INSERT operation. The difference is only important to ** the update hook. ** -** Parameter P4 may point to a string containing the table-name, or -** may be NULL. If it is not NULL, then the update-hook -** (sqlite3.xUpdateCallback) is invoked following a successful insert. +** Parameter P4 may point to a Table structure, or may be NULL. If it is +** not NULL, then the update-hook (sqlite3.xUpdateCallback) is invoked +** following a successful insert. ** ** (WARNING/TODO: If P1 is a pseudo-cursor and P2 is dynamically ** allocated, then ownership of P2 is transferred to the pseudo-cursor @@ -70509,7 +82385,7 @@ case OP_NewRowid: { /* out2-prerelease */ ** for indices is OP_IdxInsert. */ /* Opcode: InsertInt P1 P2 P3 P4 P5 -** Synopsis: intkey=P3 data=r[P2] +** Synopsis: intkey=P3 data=r[P2] ** ** This works exactly like OP_Insert except that the key is the ** integer value P3, not the value of the integer stored in register P3. @@ -70518,22 +82394,23 @@ case OP_Insert: case OP_InsertInt: { Mem *pData; /* MEM cell holding data for the record to be inserted */ Mem *pKey; /* MEM cell holding key for the record */ - i64 iKey; /* The integer ROWID or key for the record to be inserted */ VdbeCursor *pC; /* Cursor to table into which insert is written */ - int nZero; /* Number of zero-bytes to append */ int seekResult; /* Result of prior seek or 0 if no USESEEKRESULT flag */ const char *zDb; /* database name - used by the update hook */ - const char *zTbl; /* Table name - used by the opdate hook */ + Table *pTab; /* Table structure - used by update and pre-update hooks */ int op; /* Opcode for update hook: SQLITE_UPDATE or SQLITE_INSERT */ + BtreePayload x; /* Payload to be inserted */ + op = 0; pData = &aMem[pOp->p2]; assert( pOp->p1>=0 && pOp->p1nCursor ); assert( memIsValid(pData) ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - assert( pC->pCursor!=0 ); - assert( pC->pseudoTableReg==0 ); - assert( pC->isTable ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); + assert( (pOp->p5 & OPFLAG_ISNOOP) || pC->isTable ); + assert( pOp->p4type==P4_TABLE || pOp->p4type>=P4_STATIC ); REGISTER_TRACE(pOp->p2, pData); if( pOp->opcode==OP_Insert ){ @@ -70541,99 +82418,192 @@ case OP_InsertInt: { assert( pKey->flags & MEM_Int ); assert( memIsValid(pKey) ); REGISTER_TRACE(pOp->p3, pKey); - iKey = pKey->u.i; + x.nKey = pKey->u.i; }else{ assert( pOp->opcode==OP_InsertInt ); - iKey = pOp->p3; + x.nKey = pOp->p3; } + if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){ + assert( pC->iDb>=0 ); + zDb = db->aDb[pC->iDb].zDbSName; + pTab = pOp->p4.pTab; + assert( (pOp->p5 & OPFLAG_ISNOOP) || HasRowid(pTab) ); + op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT); + }else{ + pTab = 0; /* Not needed. Silence a compiler warning. */ + zDb = 0; /* Not needed. Silence a compiler warning. */ + } + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + /* Invoke the pre-update hook, if any */ + if( db->xPreUpdateCallback + && pOp->p4type==P4_TABLE + && !(pOp->p5 & OPFLAG_ISUPDATE) + ){ + sqlite3VdbePreUpdateHook(p, pC, SQLITE_INSERT, zDb, pTab, x.nKey, pOp->p2); + } + if( pOp->p5 & OPFLAG_ISNOOP ) break; +#endif + if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++; - if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = lastRowid = iKey; + if( pOp->p5 & OPFLAG_LASTROWID ) db->lastRowid = x.nKey; if( pData->flags & MEM_Null ){ - pData->z = 0; - pData->n = 0; + x.pData = 0; + x.nData = 0; }else{ assert( pData->flags & (MEM_Blob|MEM_Str) ); + x.pData = pData->z; + x.nData = pData->n; } seekResult = ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0); if( pData->flags & MEM_Zero ){ - nZero = pData->u.nZero; + x.nZero = pData->u.nZero; }else{ - nZero = 0; + x.nZero = 0; } - sqlite3BtreeSetCachedRowid(pC->pCursor, 0); - rc = sqlite3BtreeInsert(pC->pCursor, 0, iKey, - pData->z, pData->n, nZero, - (pOp->p5 & OPFLAG_APPEND)!=0, seekResult + x.pKey = 0; + rc = sqlite3BtreeInsert(pC->uc.pCursor, &x, + (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), seekResult ); - pC->rowidIsValid = 0; pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; /* Invoke the update-hook if required. */ - if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z ){ - zDb = db->aDb[pC->iDb].zName; - zTbl = pOp->p4.z; - op = ((pOp->p5 & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_INSERT); - assert( pC->isTable ); - db->xUpdateCallback(db->pUpdateArg, op, zDb, zTbl, iKey); - assert( pC->iDb>=0 ); + if( rc ) goto abort_due_to_error; + if( db->xUpdateCallback && op ){ + db->xUpdateCallback(db->pUpdateArg, op, zDb, pTab->zName, x.nKey); } break; } -/* Opcode: Delete P1 P2 * P4 * +/* Opcode: Delete P1 P2 P3 P4 P5 ** ** Delete the record at which the P1 cursor is currently pointing. ** -** The cursor will be left pointing at either the next or the previous +** If the OPFLAG_SAVEPOSITION bit of the P5 parameter is set, then +** the cursor will be left pointing at either the next or the previous ** record in the table. If it is left pointing at the next record, then -** the next Next instruction will be a no-op. Hence it is OK to delete -** a record from within an Next loop. +** the next Next instruction will be a no-op. As a result, in this case +** it is ok to delete a record from within a Next loop. If +** OPFLAG_SAVEPOSITION bit of P5 is clear, then the cursor will be +** left in an undefined state. ** -** If the OPFLAG_NCHANGE flag of P2 is set, then the row change count is -** incremented (otherwise not). +** If the OPFLAG_AUXDELETE bit is set on P5, that indicates that this +** delete one of several associated with deleting a table row and all its +** associated index entries. Exactly one of those deletes is the "primary" +** delete. The others are all on OPFLAG_FORDELETE cursors or else are +** marked with the AUXDELETE flag. +** +** If the OPFLAG_NCHANGE flag of P2 (NB: P2 not P5) is set, then the row +** change count is incremented (otherwise not). ** ** P1 must not be pseudo-table. It has to be a real table with ** multiple rows. ** -** If P4 is not NULL, then it is the name of the table that P1 is -** pointing to. The update hook will be invoked, if it exists. -** If P4 is not NULL then the P1 cursor must have been positioned -** using OP_NotFound prior to invoking this opcode. +** If P4 is not NULL then it points to a Table object. In this case either +** the update or pre-update hook, or both, may be invoked. The P1 cursor must +** have been positioned using OP_NotFound prior to invoking this opcode in +** this case. Specifically, if one is configured, the pre-update hook is +** invoked if P4 is not NULL. The update-hook is invoked if one is configured, +** P4 is not NULL, and the OPFLAG_NCHANGE flag is set in P2. +** +** If the OPFLAG_ISUPDATE flag is set in P2, then P3 contains the address +** of the memory cell that contains the value that the rowid of the row will +** be set to by the update. */ case OP_Delete: { - i64 iKey; VdbeCursor *pC; + const char *zDb; + Table *pTab; + int opflags; + opflags = pOp->p2; assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - assert( pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */ - iKey = pC->lastRowid; /* Only used for the update hook */ - - /* The OP_Delete opcode always follows an OP_NotExists or OP_Last or - ** OP_Column on the same table without any intervening operations that - ** might move or invalidate the cursor. Hence cursor pC is always pointing - ** to the row to be deleted and the sqlite3VdbeCursorMoveto() operation - ** below is always a no-op and cannot fail. We will run it anyhow, though, - ** to guard against future changes to the code generator. - **/ + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); assert( pC->deferredMoveto==0 ); - rc = sqlite3VdbeCursorMoveto(pC); - if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error; - sqlite3BtreeSetCachedRowid(pC->pCursor, 0); - rc = sqlite3BtreeDelete(pC->pCursor); +#ifdef SQLITE_DEBUG + if( pOp->p4type==P4_TABLE && HasRowid(pOp->p4.pTab) && pOp->p5==0 ){ + /* If p5 is zero, the seek operation that positioned the cursor prior to + ** OP_Delete will have also set the pC->movetoTarget field to the rowid of + ** the row that is being deleted */ + i64 iKey = sqlite3BtreeIntegerKey(pC->uc.pCursor); + assert( pC->movetoTarget==iKey ); + } +#endif + + /* If the update-hook or pre-update-hook will be invoked, set zDb to + ** the name of the db to pass as to it. Also set local pTab to a copy + ** of p4.pTab. Finally, if p5 is true, indicating that this cursor was + ** last moved with OP_Next or OP_Prev, not Seek or NotFound, set + ** VdbeCursor.movetoTarget to the current rowid. */ + if( pOp->p4type==P4_TABLE && HAS_UPDATE_HOOK(db) ){ + assert( pC->iDb>=0 ); + assert( pOp->p4.pTab!=0 ); + zDb = db->aDb[pC->iDb].zDbSName; + pTab = pOp->p4.pTab; + if( (pOp->p5 & OPFLAG_SAVEPOSITION)!=0 && pC->isTable ){ + pC->movetoTarget = sqlite3BtreeIntegerKey(pC->uc.pCursor); + } + }else{ + zDb = 0; /* Not needed. Silence a compiler warning. */ + pTab = 0; /* Not needed. Silence a compiler warning. */ + } + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + /* Invoke the pre-update-hook if required. */ + if( db->xPreUpdateCallback && pOp->p4.pTab ){ + assert( !(opflags & OPFLAG_ISUPDATE) + || HasRowid(pTab)==0 + || (aMem[pOp->p3].flags & MEM_Int) + ); + sqlite3VdbePreUpdateHook(p, pC, + (opflags & OPFLAG_ISUPDATE) ? SQLITE_UPDATE : SQLITE_DELETE, + zDb, pTab, pC->movetoTarget, + pOp->p3 + ); + } + if( opflags & OPFLAG_ISNOOP ) break; +#endif + + /* Only flags that can be set are SAVEPOISTION and AUXDELETE */ + assert( (pOp->p5 & ~(OPFLAG_SAVEPOSITION|OPFLAG_AUXDELETE))==0 ); + assert( OPFLAG_SAVEPOSITION==BTREE_SAVEPOSITION ); + assert( OPFLAG_AUXDELETE==BTREE_AUXDELETE ); + +#ifdef SQLITE_DEBUG + if( p->pFrame==0 ){ + if( pC->isEphemeral==0 + && (pOp->p5 & OPFLAG_AUXDELETE)==0 + && (pC->wrFlag & OPFLAG_FORDELETE)==0 + ){ + nExtraDelete++; + } + if( pOp->p2 & OPFLAG_NCHANGE ){ + nExtraDelete--; + } + } +#endif + + rc = sqlite3BtreeDelete(pC->uc.pCursor, pOp->p5); pC->cacheStatus = CACHE_STALE; + pC->seekResult = 0; + if( rc ) goto abort_due_to_error; /* Invoke the update-hook if required. */ - if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z && pC->isTable ){ - db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, - db->aDb[pC->iDb].zName, pOp->p4.z, iKey); - assert( pC->iDb>=0 ); + if( opflags & OPFLAG_NCHANGE ){ + p->nChange++; + if( db->xUpdateCallback && HasRowid(pTab) ){ + db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, zDb, pTab->zName, + pC->movetoTarget); + assert( pC->iDb>=0 ); + } } - if( pOp->p2 & OPFLAG_NCHANGE ) p->nChange++; + break; } /* Opcode: ResetCount * * * * * @@ -70650,12 +82620,12 @@ case OP_ResetCount: { } /* Opcode: SorterCompare P1 P2 P3 P4 -** Synopsis: if key(P1)!=rtrim(r[P3],P4) goto P2 +** Synopsis: if key(P1)!=trim(r[P3],P4) goto P2 ** ** P1 is a sorter cursor. This instruction compares a prefix of the -** the record blob in register P3 against a prefix of the entry that -** the sorter cursor currently points to. The final P4 fields of both -** the P3 and sorter record are ignored. +** record blob in register P3 against a prefix of the entry that +** the sorter cursor currently points to. Only the first P4 fields +** of r[P3] and the sorter record are compared. ** ** If either P3 or the sorter contains a NULL in one of their significant ** fields (not counting the P4 fields at the end which are ignored) then @@ -70667,24 +82637,32 @@ case OP_ResetCount: { case OP_SorterCompare: { VdbeCursor *pC; int res; - int nIgnore; + int nKeyCol; pC = p->apCsr[pOp->p1]; assert( isSorter(pC) ); assert( pOp->p4type==P4_INT32 ); pIn3 = &aMem[pOp->p3]; - nIgnore = pOp->p4.i; - rc = sqlite3VdbeSorterCompare(pC, pIn3, nIgnore, &res); - if( res ){ - pc = pOp->p2-1; - } + nKeyCol = pOp->p4.i; + res = 0; + rc = sqlite3VdbeSorterCompare(pC, pIn3, nKeyCol, &res); + VdbeBranchTaken(res!=0,2); + if( rc ) goto abort_due_to_error; + if( res ) goto jump_to_p2; break; }; -/* Opcode: SorterData P1 P2 * * * +/* Opcode: SorterData P1 P2 P3 * * ** Synopsis: r[P2]=data ** ** Write into register P2 the current sorter data for sorter cursor P1. +** Then clear the column header cache on cursor P3. +** +** This opcode is normally use to move a record out of the sorter and into +** a register that is the source for a pseudo-table cursor created using +** OpenPseudo. That pseudo-table cursor is the one that is identified by +** parameter P3. Clearing the P3 column cache as part of this opcode saves +** us from having to issue a separate NullRow instruction to clear that cache. */ case OP_SorterData: { VdbeCursor *pC; @@ -70693,89 +82671,80 @@ case OP_SorterData: { pC = p->apCsr[pOp->p1]; assert( isSorter(pC) ); rc = sqlite3VdbeSorterRowkey(pC, pOut); + assert( rc!=SQLITE_OK || (pOut->flags & MEM_Blob) ); + assert( pOp->p1>=0 && pOp->p1nCursor ); + if( rc ) goto abort_due_to_error; + p->apCsr[pOp->p3]->cacheStatus = CACHE_STALE; break; } -/* Opcode: RowData P1 P2 * * * +/* Opcode: RowData P1 P2 P3 * * ** Synopsis: r[P2]=data ** -** Write into register P2 the complete row data for cursor P1. +** Write into register P2 the complete row content for the row at +** which cursor P1 is currently pointing. ** There is no interpretation of the data. ** It is just copied onto the P2 register exactly as ** it is found in the database file. ** -** If the P1 cursor must be pointing to a valid row (not a NULL row) -** of a real table, not a pseudo-table. -*/ -/* Opcode: RowKey P1 P2 * * * -** Synopsis: r[P2]=key -** -** Write into register P2 the complete row key for cursor P1. -** There is no interpretation of the data. -** The key is copied onto the P3 register exactly as -** it is found in the database file. +** If cursor P1 is an index, then the content is the key of the row. +** If cursor P2 is a table, then the content extracted is the data. ** ** If the P1 cursor must be pointing to a valid row (not a NULL row) ** of a real table, not a pseudo-table. +** +** If P3!=0 then this opcode is allowed to make an ephermeral pointer +** into the database page. That means that the content of the output +** register will be invalidated as soon as the cursor moves - including +** moves caused by other cursors that "save" the the current cursors +** position in order that they can write to the same table. If P3==0 +** then a copy of the data is made into memory. P3!=0 is faster, but +** P3==0 is safer. +** +** If P3!=0 then the content of the P2 register is unsuitable for use +** in OP_Result and any OP_Result will invalidate the P2 register content. +** The P2 register content is invalidated by opcodes like OP_Function or +** by any use of another cursor pointing to the same table. */ -case OP_RowKey: case OP_RowData: { VdbeCursor *pC; BtCursor *pCrsr; u32 n; - i64 n64; - pOut = &aMem[pOp->p2]; - memAboutToChange(p, pOut); + pOut = out2Prerelease(p, pOp); - /* Note that RowKey and RowData are really exactly the same instruction */ assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; - assert( isSorter(pC)==0 ); - assert( pC->isTable || pOp->opcode!=OP_RowData ); - assert( pC->isTable==0 || pOp->opcode==OP_RowData ); assert( pC!=0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( isSorter(pC)==0 ); assert( pC->nullRow==0 ); - assert( pC->pseudoTableReg==0 ); - assert( pC->pCursor!=0 ); - pCrsr = pC->pCursor; - assert( sqlite3BtreeCursorIsValid(pCrsr) ); + assert( pC->uc.pCursor!=0 ); + pCrsr = pC->uc.pCursor; - /* The OP_RowKey and OP_RowData opcodes always follow OP_NotExists or - ** OP_Rewind/Op_Next with no intervening instructions that might invalidate - ** the cursor. Hence the following sqlite3VdbeCursorMoveto() call is always - ** a no-op and can never fail. But we leave it in place as a safety. + /* The OP_RowData opcodes always follow OP_NotExists or + ** OP_SeekRowid or OP_Rewind/Op_Next with no intervening instructions + ** that might invalidate the cursor. + ** If this where not the case, on of the following assert()s + ** would fail. Should this ever change (because of changes in the code + ** generator) then the fix would be to insert a call to + ** sqlite3VdbeCursorMoveto(). */ assert( pC->deferredMoveto==0 ); + assert( sqlite3BtreeCursorIsValid(pCrsr) ); +#if 0 /* Not required due to the previous to assert() statements */ rc = sqlite3VdbeCursorMoveto(pC); - if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error; + if( rc!=SQLITE_OK ) goto abort_due_to_error; +#endif - if( pC->isTable==0 ){ - assert( !pC->isTable ); - VVA_ONLY(rc =) sqlite3BtreeKeySize(pCrsr, &n64); - assert( rc==SQLITE_OK ); /* True because of CursorMoveto() call above */ - if( n64>db->aLimit[SQLITE_LIMIT_LENGTH] ){ - goto too_big; - } - n = (u32)n64; - }else{ - VVA_ONLY(rc =) sqlite3BtreeDataSize(pCrsr, &n); - assert( rc==SQLITE_OK ); /* DataSize() cannot fail */ - if( n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ - goto too_big; - } + n = sqlite3BtreePayloadSize(pCrsr); + if( n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){ + goto too_big; } - if( sqlite3VdbeMemGrow(pOut, n, 0) ){ - goto no_mem; - } - pOut->n = n; - MemSetTypeFlag(pOut, MEM_Blob); - if( pC->isTable==0 ){ - rc = sqlite3BtreeKey(pCrsr, 0, n, pOut->z); - }else{ - rc = sqlite3BtreeData(pCrsr, 0, n, pOut->z); - } - pOut->enc = SQLITE_UTF8; /* In case the blob is ever cast to text */ + testcase( n==0 ); + rc = sqlite3VdbeMemFromBtree(pCrsr, 0, n, pOut); + if( rc ) goto abort_due_to_error; + if( !pOp->p3 ) Deephemeralize(pOut); UPDATE_MAX_BLOBSIZE(pOut); REGISTER_TRACE(pOp->p2, pOut); break; @@ -70791,39 +82760,42 @@ case OP_RowData: { ** be a separate OP_VRowid opcode for use with virtual tables, but this ** one opcode now works for both table types. */ -case OP_Rowid: { /* out2-prerelease */ +case OP_Rowid: { /* out2 */ VdbeCursor *pC; i64 v; sqlite3_vtab *pVtab; const sqlite3_module *pModule; + pOut = out2Prerelease(p, pOp); assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - assert( pC->pseudoTableReg==0 || pC->nullRow ); + assert( pC->eCurType!=CURTYPE_PSEUDO || pC->nullRow ); if( pC->nullRow ){ pOut->flags = MEM_Null; break; }else if( pC->deferredMoveto ){ v = pC->movetoTarget; #ifndef SQLITE_OMIT_VIRTUALTABLE - }else if( pC->pVtabCursor ){ - pVtab = pC->pVtabCursor->pVtab; + }else if( pC->eCurType==CURTYPE_VTAB ){ + assert( pC->uc.pVCur!=0 ); + pVtab = pC->uc.pVCur->pVtab; pModule = pVtab->pModule; assert( pModule->xRowid ); - rc = pModule->xRowid(pC->pVtabCursor, &v); + rc = pModule->xRowid(pC->uc.pVCur, &v); sqlite3VtabImportErrmsg(p, pVtab); + if( rc ) goto abort_due_to_error; #endif /* SQLITE_OMIT_VIRTUALTABLE */ }else{ - assert( pC->pCursor!=0 ); - rc = sqlite3VdbeCursorMoveto(pC); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); + rc = sqlite3VdbeCursorRestore(pC); if( rc ) goto abort_due_to_error; - if( pC->rowidIsValid ){ - v = pC->lastRowid; - }else{ - rc = sqlite3BtreeKeySize(pC->pCursor, &v); - assert( rc==SQLITE_OK ); /* Always so because of CursorMoveto() above */ + if( pC->nullRow ){ + pOut->flags = MEM_Null; + break; } + v = sqlite3BtreeIntegerKey(pC->uc.pCursor); } pOut->u.i = v; break; @@ -70842,21 +82814,32 @@ case OP_NullRow: { pC = p->apCsr[pOp->p1]; assert( pC!=0 ); pC->nullRow = 1; - pC->rowidIsValid = 0; pC->cacheStatus = CACHE_STALE; - if( pC->pCursor ){ - sqlite3BtreeClearCursor(pC->pCursor); + if( pC->eCurType==CURTYPE_BTREE ){ + assert( pC->uc.pCursor!=0 ); + sqlite3BtreeClearCursor(pC->uc.pCursor); } break; } -/* Opcode: Last P1 P2 * * * +/* Opcode: Last P1 P2 P3 * * ** -** The next use of the Rowid or Column or Next instruction for P1 +** The next use of the Rowid or Column or Prev instruction for P1 ** will refer to the last entry in the database table or index. ** If the table or index is empty and P2>0, then jump immediately to P2. ** If P2 is 0 or if the table or index is not empty, fall through ** to the following instruction. +** +** This opcode leaves the cursor configured to move in reverse order, +** from the end toward the beginning. In other words, the cursor is +** configured to use Prev, not Next. +** +** If P3 is -1, then the cursor is positioned at the end of the btree +** for the purpose of appending a new entry onto the btree. In that +** case P2 must be 0. It is assumed that the cursor is used only for +** appending and so if the cursor is valid, then the cursor must already +** be pointing at the end of the btree and so no changes are made to +** the cursor. */ case OP_Last: { /* jump */ VdbeCursor *pC; @@ -70866,21 +82849,40 @@ case OP_Last: { /* jump */ assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - pCrsr = pC->pCursor; + assert( pC->eCurType==CURTYPE_BTREE ); + pCrsr = pC->uc.pCursor; res = 0; assert( pCrsr!=0 ); - rc = sqlite3BtreeLast(pCrsr, &res); - pC->nullRow = (u8)res; - pC->deferredMoveto = 0; - pC->rowidIsValid = 0; - pC->cacheStatus = CACHE_STALE; - if( pOp->p2>0 && res ){ - pc = pOp->p2 - 1; + pC->seekResult = pOp->p3; +#ifdef SQLITE_DEBUG + pC->seekOp = OP_Last; +#endif + if( pOp->p3==0 || !sqlite3BtreeCursorIsValidNN(pCrsr) ){ + rc = sqlite3BtreeLast(pCrsr, &res); + pC->nullRow = (u8)res; + pC->deferredMoveto = 0; + pC->cacheStatus = CACHE_STALE; + if( rc ) goto abort_due_to_error; + if( pOp->p2>0 ){ + VdbeBranchTaken(res!=0,2); + if( res ) goto jump_to_p2; + } + }else{ + assert( pOp->p2==0 ); } break; } +/* Opcode: SorterSort P1 P2 * * * +** +** After all records have been inserted into the Sorter object +** identified by P1, invoke this opcode to actually do the sorting. +** Jump to P2 if there are no records to be sorted. +** +** This opcode is an alias for OP_Sort and OP_Rewind that is used +** for Sorter objects. +*/ /* Opcode: Sort P1 P2 * * * ** ** This opcode does exactly the same thing as OP_Rewind except that @@ -70906,9 +82908,13 @@ case OP_Sort: { /* jump */ ** ** The next use of the Rowid or Column or Next instruction for P1 ** will refer to the first entry in the database table or index. -** If the table or index is empty and P2>0, then jump immediately to P2. -** If P2 is 0 or if the table or index is not empty, fall through -** to the following instruction. +** If the table or index is empty, jump immediately to P2. +** If the table or index is not empty, fall through to the following +** instruction. +** +** This opcode leaves the cursor configured to move in forward order, +** from the beginning toward the end. In other words, the cursor is +** configured to use Next, not Prev. */ case OP_Rewind: { /* jump */ VdbeCursor *pC; @@ -70920,34 +82926,46 @@ case OP_Rewind: { /* jump */ assert( pC!=0 ); assert( isSorter(pC)==(pOp->opcode==OP_SorterSort) ); res = 1; +#ifdef SQLITE_DEBUG + pC->seekOp = OP_Rewind; +#endif if( isSorter(pC) ){ - rc = sqlite3VdbeSorterRewind(db, pC, &res); + rc = sqlite3VdbeSorterRewind(pC, &res); }else{ - pCrsr = pC->pCursor; + assert( pC->eCurType==CURTYPE_BTREE ); + pCrsr = pC->uc.pCursor; assert( pCrsr ); rc = sqlite3BtreeFirst(pCrsr, &res); pC->deferredMoveto = 0; pC->cacheStatus = CACHE_STALE; - pC->rowidIsValid = 0; } + if( rc ) goto abort_due_to_error; pC->nullRow = (u8)res; assert( pOp->p2>0 && pOp->p2nOp ); - if( res ){ - pc = pOp->p2 - 1; - } + VdbeBranchTaken(res!=0,2); + if( res ) goto jump_to_p2; break; } -/* Opcode: Next P1 P2 * * P5 +/* Opcode: Next P1 P2 P3 P4 P5 ** ** Advance cursor P1 so that it points to the next key/data pair in its ** table or index. If there are no more key/value pairs then fall through ** to the following instruction. But if the cursor advance was successful, ** jump immediately to P2. ** +** The Next opcode is only valid following an SeekGT, SeekGE, or +** OP_Rewind opcode used to position the cursor. Next is not allowed +** to follow SeekLT, SeekLE, or OP_Last. +** ** The P1 cursor must be for a real table, not a pseudo-table. P1 must have ** been opened prior to this opcode or the program will segfault. ** +** The P3 value is a hint to the btree implementation. If P3==1, that +** means P1 is an SQL index and that this instruction could have been +** omitted if that index had been unique. P3 is usually 0. P3 is +** always either 0 or 1. +** ** P4 is always of type P4_ADVANCE. The function pointer points to ** sqlite3BtreeNext(). ** @@ -70956,38 +82974,56 @@ case OP_Rewind: { /* jump */ ** ** See also: Prev, NextIfOpen */ -/* Opcode: NextIfOpen P1 P2 * * P5 +/* Opcode: NextIfOpen P1 P2 P3 P4 P5 ** -** This opcode works just like OP_Next except that if cursor P1 is not +** This opcode works just like Next except that if cursor P1 is not ** open it behaves a no-op. */ -/* Opcode: Prev P1 P2 * * P5 +/* Opcode: Prev P1 P2 P3 P4 P5 ** ** Back up cursor P1 so that it points to the previous key/data pair in its ** table or index. If there is no previous key/value pairs then fall through ** to the following instruction. But if the cursor backup was successful, ** jump immediately to P2. ** +** +** The Prev opcode is only valid following an SeekLT, SeekLE, or +** OP_Last opcode used to position the cursor. Prev is not allowed +** to follow SeekGT, SeekGE, or OP_Rewind. +** ** The P1 cursor must be for a real table, not a pseudo-table. If P1 is ** not open then the behavior is undefined. ** +** The P3 value is a hint to the btree implementation. If P3==1, that +** means P1 is an SQL index and that this instruction could have been +** omitted if that index had been unique. P3 is usually 0. P3 is +** always either 0 or 1. +** ** P4 is always of type P4_ADVANCE. The function pointer points to ** sqlite3BtreePrevious(). ** ** If P5 is positive and the jump is taken, then event counter ** number P5-1 in the prepared statement is incremented. */ -/* Opcode: PrevIfOpen P1 P2 * * P5 +/* Opcode: PrevIfOpen P1 P2 P3 P4 P5 ** -** This opcode works just like OP_Prev except that if cursor P1 is not +** This opcode works just like Prev except that if cursor P1 is not ** open it behaves a no-op. */ +/* Opcode: SorterNext P1 P2 * * P5 +** +** This opcode works just like OP_Next except that P1 must be a +** sorter object for which the OP_SorterSort opcode has been +** invoked. This opcode advances the cursor to the next sorted +** record, or jumps to P2 if there are no more sorted records. +*/ case OP_SorterNext: { /* jump */ VdbeCursor *pC; int res; pC = p->apCsr[pOp->p1]; assert( isSorter(pC) ); + res = 0; rc = sqlite3VdbeSorterNext(db, pC, &res); goto next_tail; case OP_PrevIfOpen: /* jump */ @@ -70999,49 +83035,83 @@ case OP_Next: /* jump */ assert( pOp->p1>=0 && pOp->p1nCursor ); assert( pOp->p5aCounter) ); pC = p->apCsr[pOp->p1]; + res = pOp->p3; assert( pC!=0 ); assert( pC->deferredMoveto==0 ); - assert( pC->pCursor ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( res==0 || (res==1 && pC->isTable==0) ); + testcase( res==1 ); assert( pOp->opcode!=OP_Next || pOp->p4.xAdvance==sqlite3BtreeNext ); assert( pOp->opcode!=OP_Prev || pOp->p4.xAdvance==sqlite3BtreePrevious ); assert( pOp->opcode!=OP_NextIfOpen || pOp->p4.xAdvance==sqlite3BtreeNext ); assert( pOp->opcode!=OP_PrevIfOpen || pOp->p4.xAdvance==sqlite3BtreePrevious); - rc = pOp->p4.xAdvance(pC->pCursor, &res); + + /* The Next opcode is only used after SeekGT, SeekGE, and Rewind. + ** The Prev opcode is only used after SeekLT, SeekLE, and Last. */ + assert( pOp->opcode!=OP_Next || pOp->opcode!=OP_NextIfOpen + || pC->seekOp==OP_SeekGT || pC->seekOp==OP_SeekGE + || pC->seekOp==OP_Rewind || pC->seekOp==OP_Found); + assert( pOp->opcode!=OP_Prev || pOp->opcode!=OP_PrevIfOpen + || pC->seekOp==OP_SeekLT || pC->seekOp==OP_SeekLE + || pC->seekOp==OP_Last ); + + rc = pOp->p4.xAdvance(pC->uc.pCursor, &res); next_tail: pC->cacheStatus = CACHE_STALE; + VdbeBranchTaken(res==0,2); + if( rc ) goto abort_due_to_error; if( res==0 ){ pC->nullRow = 0; - pc = pOp->p2 - 1; p->aCounter[pOp->p5]++; #ifdef SQLITE_TEST sqlite3_search_count++; #endif + goto jump_to_p2_and_check_for_interrupt; }else{ pC->nullRow = 1; } - pC->rowidIsValid = 0; goto check_for_interrupt; } -/* Opcode: IdxInsert P1 P2 P3 * P5 +/* Opcode: IdxInsert P1 P2 P3 P4 P5 ** Synopsis: key=r[P2] ** ** Register P2 holds an SQL index key made using the ** MakeRecord instructions. This opcode writes that key ** into the index P1. Data for the entry is nil. ** -** P3 is a flag that provides a hint to the b-tree layer that this -** insert is likely to be an append. +** If P4 is not zero, then it is the number of values in the unpacked +** key of reg(P2). In that case, P3 is the index of the first register +** for the unpacked key. The availability of the unpacked key can sometimes +** be an optimization. +** +** If P5 has the OPFLAG_APPEND bit set, that is a hint to the b-tree layer +** that this insert is likely to be an append. +** +** If P5 has the OPFLAG_NCHANGE bit set, then the change counter is +** incremented by this instruction. If the OPFLAG_NCHANGE bit is clear, +** then the change counter is unchanged. +** +** If the OPFLAG_USESEEKRESULT flag of P5 is set, the implementation might +** run faster by avoiding an unnecessary seek on cursor P1. However, +** the OPFLAG_USESEEKRESULT flag must only be set if there have been no prior +** seeks on the cursor or if the most recent seek used a key equivalent +** to P2. ** ** This instruction only works for indices. The equivalent instruction ** for tables is OP_Insert. */ +/* Opcode: SorterInsert P1 P2 * * * +** Synopsis: key=r[P2] +** +** Register P2 holds an SQL index key made using the +** MakeRecord instructions. This opcode writes that key +** into the sorter P1. Data for the entry is nil. +*/ case OP_SorterInsert: /* in2 */ case OP_IdxInsert: { /* in2 */ VdbeCursor *pC; - BtCursor *pCrsr; - int nKey; - const char *zKey; + BtreePayload x; assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; @@ -71049,24 +83119,26 @@ case OP_IdxInsert: { /* in2 */ assert( isSorter(pC)==(pOp->opcode==OP_SorterInsert) ); pIn2 = &aMem[pOp->p2]; assert( pIn2->flags & MEM_Blob ); - pCrsr = pC->pCursor; if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++; - assert( pCrsr!=0 ); + assert( pC->eCurType==CURTYPE_BTREE || pOp->opcode==OP_SorterInsert ); assert( pC->isTable==0 ); rc = ExpandBlob(pIn2); - if( rc==SQLITE_OK ){ - if( isSorter(pC) ){ - rc = sqlite3VdbeSorterWrite(db, pC, pIn2); - }else{ - nKey = pIn2->n; - zKey = pIn2->z; - rc = sqlite3BtreeInsert(pCrsr, zKey, nKey, "", 0, 0, pOp->p3, - ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0) - ); - assert( pC->deferredMoveto==0 ); - pC->cacheStatus = CACHE_STALE; - } + if( rc ) goto abort_due_to_error; + if( pOp->opcode==OP_SorterInsert ){ + rc = sqlite3VdbeSorterWrite(pC, pIn2); + }else{ + x.nKey = pIn2->n; + x.pKey = pIn2->z; + x.aMem = aMem + pOp->p3; + x.nMem = (u16)pOp->p4.i; + rc = sqlite3BtreeInsert(pC->uc.pCursor, &x, + (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), + ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0) + ); + assert( pC->deferredMoveto==0 ); + pC->cacheStatus = CACHE_STALE; } + if( rc) goto abort_due_to_error; break; } @@ -71084,29 +83156,49 @@ case OP_IdxDelete: { UnpackedRecord r; assert( pOp->p3>0 ); - assert( pOp->p2>0 && pOp->p2+pOp->p3<=(p->nMem-p->nCursor)+1 ); + assert( pOp->p2>0 && pOp->p2+pOp->p3<=(p->nMem+1 - p->nCursor)+1 ); assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - pCrsr = pC->pCursor; + assert( pC->eCurType==CURTYPE_BTREE ); + pCrsr = pC->uc.pCursor; assert( pCrsr!=0 ); assert( pOp->p5==0 ); r.pKeyInfo = pC->pKeyInfo; r.nField = (u16)pOp->p3; - r.flags = UNPACKED_PREFIX_MATCH; + r.default_rc = 0; r.aMem = &aMem[pOp->p2]; -#ifdef SQLITE_DEBUG - { int i; for(i=0; ideferredMoveto==0 ); pC->cacheStatus = CACHE_STALE; + pC->seekResult = 0; break; } +/* Opcode: Seek P1 * P3 P4 * +** Synopsis: Move P3 to P1.rowid +** +** P1 is an open index cursor and P3 is a cursor on the corresponding +** table. This opcode does a deferred seek of the P3 table cursor +** to the row that corresponds to the current row of P1. +** +** This is a deferred seek. Nothing actually happens until +** the cursor is used to read a record. That way, if no reads +** occur, no unnecessary I/O happens. +** +** P4 may be an array of integers (type P4_INTARRAY) containing +** one entry for each column in the P3 table. If array entry a(i) +** is non-zero, then reading column a(i)-1 from cursor P3 is +** equivalent to performing the deferred seek and then reading column i +** from P1. This information is stored in P3 and used to redirect +** reads against P3 over to P1, thus possibly avoiding the need to +** seek and read cursor P3. +*/ /* Opcode: IdxRowid P1 P2 * * * ** Synopsis: r[P2]=rowid ** @@ -71116,29 +83208,56 @@ case OP_IdxDelete: { ** ** See also: Rowid, MakeRecord. */ -case OP_IdxRowid: { /* out2-prerelease */ - BtCursor *pCrsr; - VdbeCursor *pC; - i64 rowid; +case OP_Seek: +case OP_IdxRowid: { /* out2 */ + VdbeCursor *pC; /* The P1 index cursor */ + VdbeCursor *pTabCur; /* The P2 table cursor (OP_Seek only) */ + i64 rowid; /* Rowid that P1 current points to */ assert( pOp->p1>=0 && pOp->p1nCursor ); pC = p->apCsr[pOp->p1]; assert( pC!=0 ); - pCrsr = pC->pCursor; - assert( pCrsr!=0 ); - pOut->flags = MEM_Null; - rc = sqlite3VdbeCursorMoveto(pC); - if( NEVER(rc) ) goto abort_due_to_error; - assert( pC->deferredMoveto==0 ); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0 ); assert( pC->isTable==0 ); + assert( pC->deferredMoveto==0 ); + assert( !pC->nullRow || pOp->opcode==OP_IdxRowid ); + + /* The IdxRowid and Seek opcodes are combined because of the commonality + ** of sqlite3VdbeCursorRestore() and sqlite3VdbeIdxRowid(). */ + rc = sqlite3VdbeCursorRestore(pC); + + /* sqlite3VbeCursorRestore() can only fail if the record has been deleted + ** out from under the cursor. That will never happens for an IdxRowid + ** or Seek opcode */ + if( NEVER(rc!=SQLITE_OK) ) goto abort_due_to_error; + if( !pC->nullRow ){ rowid = 0; /* Not needed. Only used to silence a warning. */ - rc = sqlite3VdbeIdxRowid(db, pCrsr, &rowid); + rc = sqlite3VdbeIdxRowid(db, pC->uc.pCursor, &rowid); if( rc!=SQLITE_OK ){ goto abort_due_to_error; } - pOut->u.i = rowid; - pOut->flags = MEM_Int; + if( pOp->opcode==OP_Seek ){ + assert( pOp->p3>=0 && pOp->p3nCursor ); + pTabCur = p->apCsr[pOp->p3]; + assert( pTabCur!=0 ); + assert( pTabCur->eCurType==CURTYPE_BTREE ); + assert( pTabCur->uc.pCursor!=0 ); + assert( pTabCur->isTable ); + pTabCur->nullRow = 0; + pTabCur->movetoTarget = rowid; + pTabCur->deferredMoveto = 1; + assert( pOp->p4type==P4_INTARRAY || pOp->p4.ai==0 ); + pTabCur->aAltMap = pOp->p4.ai; + pTabCur->pAltCursor = pC; + }else{ + pOut = out2Prerelease(p, pOp); + pOut->u.i = rowid; + } + }else{ + assert( pOp->opcode==OP_IdxRowid ); + sqlite3VdbeMemSetNull(&aMem[pOp->p2]); } break; } @@ -71147,32 +83266,50 @@ case OP_IdxRowid: { /* out2-prerelease */ ** Synopsis: key=r[P3@P4] ** ** The P4 register values beginning with P3 form an unpacked index -** key that omits the ROWID. Compare this key value against the index -** that P1 is currently pointing to, ignoring the ROWID on the P1 index. +** key that omits the PRIMARY KEY. Compare this key value against the index +** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID +** fields at the end. ** ** If the P1 index entry is greater than or equal to the key value ** then jump to P2. Otherwise fall through to the next instruction. +*/ +/* Opcode: IdxGT P1 P2 P3 P4 P5 +** Synopsis: key=r[P3@P4] ** -** If P5 is non-zero then the key value is increased by an epsilon -** prior to the comparison. This make the opcode work like IdxGT except -** that if the key from register P3 is a prefix of the key in the cursor, -** the result is false whereas it would be true with IdxGT. +** The P4 register values beginning with P3 form an unpacked index +** key that omits the PRIMARY KEY. Compare this key value against the index +** that P1 is currently pointing to, ignoring the PRIMARY KEY or ROWID +** fields at the end. +** +** If the P1 index entry is greater than the key value +** then jump to P2. Otherwise fall through to the next instruction. */ /* Opcode: IdxLT P1 P2 P3 P4 P5 ** Synopsis: key=r[P3@P4] ** ** The P4 register values beginning with P3 form an unpacked index -** key that omits the ROWID. Compare this key value against the index -** that P1 is currently pointing to, ignoring the ROWID on the P1 index. +** key that omits the PRIMARY KEY or ROWID. Compare this key value against +** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or +** ROWID on the P1 index. ** ** If the P1 index entry is less than the key value then jump to P2. ** Otherwise fall through to the next instruction. -** -** If P5 is non-zero then the key value is increased by an epsilon prior -** to the comparison. This makes the opcode work like IdxLE. */ +/* Opcode: IdxLE P1 P2 P3 P4 P5 +** Synopsis: key=r[P3@P4] +** +** The P4 register values beginning with P3 form an unpacked index +** key that omits the PRIMARY KEY or ROWID. Compare this key value against +** the index that P1 is currently pointing to, ignoring the PRIMARY KEY or +** ROWID on the P1 index. +** +** If the P1 index entry is less than or equal to the key value then jump +** to P2. Otherwise fall through to the next instruction. +*/ +case OP_IdxLE: /* jump */ +case OP_IdxGT: /* jump */ case OP_IdxLT: /* jump */ -case OP_IdxGE: { /* jump */ +case OP_IdxGE: { /* jump */ VdbeCursor *pC; int res; UnpackedRecord r; @@ -71181,32 +83318,37 @@ case OP_IdxGE: { /* jump */ pC = p->apCsr[pOp->p1]; assert( pC!=0 ); assert( pC->isOrdered ); - assert( pC->pCursor!=0); + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->uc.pCursor!=0); assert( pC->deferredMoveto==0 ); assert( pOp->p5==0 || pOp->p5==1 ); assert( pOp->p4type==P4_INT32 ); r.pKeyInfo = pC->pKeyInfo; r.nField = (u16)pOp->p4.i; - if( pOp->p5 ){ - r.flags = UNPACKED_INCRKEY | UNPACKED_PREFIX_MATCH; + if( pOp->opcodeopcode==OP_IdxLE || pOp->opcode==OP_IdxGT ); + r.default_rc = -1; }else{ - r.flags = UNPACKED_PREFIX_MATCH; + assert( pOp->opcode==OP_IdxGE || pOp->opcode==OP_IdxLT ); + r.default_rc = 0; } r.aMem = &aMem[pOp->p3]; #ifdef SQLITE_DEBUG { int i; for(i=0; iopcode==OP_IdxLT ){ + rc = sqlite3VdbeIdxKeyCompare(db, pC, &r, &res); + assert( (OP_IdxLE&1)==(OP_IdxLT&1) && (OP_IdxGE&1)==(OP_IdxGT&1) ); + if( (pOp->opcode&1)==(OP_IdxLT&1) ){ + assert( pOp->opcode==OP_IdxLE || pOp->opcode==OP_IdxLT ); res = -res; }else{ - assert( pOp->opcode==OP_IdxGE ); + assert( pOp->opcode==OP_IdxGE || pOp->opcode==OP_IdxGT ); res++; } - if( res>0 ){ - pc = pOp->p2 - 1 ; - } + VdbeBranchTaken(res>0,2); + if( rc ) goto abort_due_to_error; + if( res>0 ) goto jump_to_p2; break; } @@ -71230,39 +83372,28 @@ case OP_IdxGE: { /* jump */ ** ** See also: Clear */ -case OP_Destroy: { /* out2-prerelease */ +case OP_Destroy: { /* out2 */ int iMoved; - int iCnt; - Vdbe *pVdbe; int iDb; assert( p->readOnly==0 ); -#ifndef SQLITE_OMIT_VIRTUALTABLE - iCnt = 0; - for(pVdbe=db->pVdbe; pVdbe; pVdbe = pVdbe->pNext){ - if( pVdbe->magic==VDBE_MAGIC_RUN && pVdbe->bIsReader - && pVdbe->inVtabMethod<2 && pVdbe->pc>=0 - ){ - iCnt++; - } - } -#else - iCnt = db->nVdbeRead; -#endif + assert( pOp->p1>1 ); + pOut = out2Prerelease(p, pOp); pOut->flags = MEM_Null; - if( iCnt>1 ){ + if( db->nVdbeRead > db->nVDestroy+1 ){ rc = SQLITE_LOCKED; p->errorAction = OE_Abort; + goto abort_due_to_error; }else{ iDb = pOp->p3; - assert( iCnt==1 ); - assert( (p->btreeMask & (((yDbMask)1)<btreeMask, iDb) ); iMoved = 0; /* Not needed. Only to silence a warning. */ rc = sqlite3BtreeDropTable(db->aDb[iDb].pBt, pOp->p1, &iMoved); pOut->flags = MEM_Int; pOut->u.i = iMoved; + if( rc ) goto abort_due_to_error; #ifndef SQLITE_OMIT_AUTOVACUUM - if( rc==SQLITE_OK && iMoved!=0 ){ + if( iMoved!=0 ){ sqlite3RootPageMoved(db, iDb, iMoved, pOp->p1); /* All OP_Destroy operations occur on the same btree */ assert( resetSchemaOnFault==0 || resetSchemaOnFault==iDb+1 ); @@ -71296,8 +83427,7 @@ case OP_Clear: { nChange = 0; assert( p->readOnly==0 ); - assert( pOp->p1!=1 ); - assert( (p->btreeMask & (((yDbMask)1)<p2))!=0 ); + assert( DbMaskTest(p->btreeMask, pOp->p2) ); rc = sqlite3BtreeClearTable( db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &nChange : 0) ); @@ -71309,6 +83439,32 @@ case OP_Clear: { aMem[pOp->p3].u.i += nChange; } } + if( rc ) goto abort_due_to_error; + break; +} + +/* Opcode: ResetSorter P1 * * * * +** +** Delete all contents from the ephemeral table or sorter +** that is open on cursor P1. +** +** This opcode only works for cursors used for sorting and +** opened with OP_OpenEphemeral or OP_SorterOpen. +*/ +case OP_ResetSorter: { + VdbeCursor *pC; + + assert( pOp->p1>=0 && pOp->p1nCursor ); + pC = p->apCsr[pOp->p1]; + assert( pC!=0 ); + if( isSorter(pC) ){ + sqlite3VdbeSorterReset(db, pC->uc.pSorter); + }else{ + assert( pC->eCurType==CURTYPE_BTREE ); + assert( pC->isEphemeral ); + rc = sqlite3BtreeClearTableOfCursor(pC->uc.pCursor); + if( rc ) goto abort_due_to_error; + } break; } @@ -71336,15 +83492,16 @@ case OP_Clear: { ** ** See documentation on OP_CreateTable for additional information. */ -case OP_CreateIndex: /* out2-prerelease */ -case OP_CreateTable: { /* out2-prerelease */ +case OP_CreateIndex: /* out2 */ +case OP_CreateTable: { /* out2 */ int pgno; int flags; Db *pDb; + pOut = out2Prerelease(p, pOp); pgno = 0; assert( pOp->p1>=0 && pOp->p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p1))!=0 ); + assert( DbMaskTest(p->btreeMask, pOp->p1) ); assert( p->readOnly==0 ); pDb = &db->aDb[pOp->p1]; assert( pDb->pBt!=0 ); @@ -71355,6 +83512,7 @@ case OP_CreateTable: { /* out2-prerelease */ flags = BTREE_BLOBKEY; } rc = sqlite3BtreeCreateTable(pDb->pBt, &pgno, flags); + if( rc ) goto abort_due_to_error; pOut->u.i = pgno; break; } @@ -71387,15 +83545,15 @@ case OP_ParseSchema: { assert( iDb>=0 && iDbnDb ); assert( DbHasProperty(db, iDb, DB_SchemaLoaded) ); /* Used to be a conditional */ { - zMaster = SCHEMA_TABLE(iDb); + zMaster = MASTER_NAME; initData.db = db; initData.iDb = pOp->p1; initData.pzErrMsg = &p->zErrMsg; zSql = sqlite3MPrintf(db, "SELECT name, rootpage, sql FROM '%q'.%s WHERE %s ORDER BY rowid", - db->aDb[iDb].zName, zMaster, pOp->p4.z); + db->aDb[iDb].zDbSName, zMaster, pOp->p4.z); if( zSql==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ assert( db->init.busy==0 ); db->init.busy = 1; @@ -71407,9 +83565,12 @@ case OP_ParseSchema: { db->init.busy = 0; } } - if( rc ) sqlite3ResetAllSchemasOfConnection(db); - if( rc==SQLITE_NOMEM ){ - goto no_mem; + if( rc ){ + sqlite3ResetAllSchemasOfConnection(db); + if( rc==SQLITE_NOMEM ){ + goto no_mem; + } + goto abort_due_to_error; } break; } @@ -71424,6 +83585,7 @@ case OP_ParseSchema: { case OP_LoadAnalysis: { assert( pOp->p1>=0 && pOp->p1nDb ); rc = sqlite3AnalysisLoad(db, pOp->p1); + if( rc ) goto abort_due_to_error; break; } #endif /* !defined(SQLITE_OMIT_ANALYZE) */ @@ -71432,7 +83594,8 @@ case OP_LoadAnalysis: { ** ** Remove the internal (in-memory) data structures that describe ** the table named P4 in database P1. This is called after a table -** is dropped in order to keep the internal representation of the +** is dropped from disk (using the Destroy opcode) in order to keep +** the internal representation of the ** schema consistent with what is on disk. */ case OP_DropTable: { @@ -71444,7 +83607,8 @@ case OP_DropTable: { ** ** Remove the internal (in-memory) data structures that describe ** the index named P4 in database P1. This is called after an index -** is dropped in order to keep the internal representation of the +** is dropped from disk (using the Destroy opcode) +** in order to keep the internal representation of the ** schema consistent with what is on disk. */ case OP_DropIndex: { @@ -71456,7 +83620,8 @@ case OP_DropIndex: { ** ** Remove the internal (in-memory) data structures that describe ** the trigger named P4 in database P1. This is called after a trigger -** is dropped in order to keep the internal representation of the +** is dropped from disk (using the Destroy opcode) in order to keep +** the internal representation of the ** schema consistent with what is on disk. */ case OP_DropTrigger: { @@ -71466,7 +83631,7 @@ case OP_DropTrigger: { #ifndef SQLITE_OMIT_INTEGRITY_CHECK -/* Opcode: IntegrityCk P1 P2 P3 * P5 +/* Opcode: IntegrityCk P1 P2 P3 P4 P5 ** ** Do an analysis of the currently open database. Store in ** register P1 the text of an error message describing any problems. @@ -71477,9 +83642,8 @@ case OP_DropTrigger: { ** In other words, the analysis stops as soon as reg(P1) errors are ** seen. Reg(P1) is updated with the number of errors remaining. ** -** The root page numbers of all tables in the database are integer -** stored in reg(P1), reg(P1+1), reg(P1+2), .... There are P2 tables -** total. +** The root page numbers of all tables in the database are integers +** stored in P4_INTARRAY argument. ** ** If P5 is not zero, the check is done on the auxiliary database ** file, not the main database file. @@ -71489,30 +83653,24 @@ case OP_DropTrigger: { case OP_IntegrityCk: { int nRoot; /* Number of tables to check. (Number of root pages.) */ int *aRoot; /* Array of rootpage numbers for tables to be checked */ - int j; /* Loop counter */ int nErr; /* Number of errors reported */ char *z; /* Text of the error report */ Mem *pnErr; /* Register keeping track of errors remaining */ assert( p->bIsReader ); nRoot = pOp->p2; + aRoot = pOp->p4.ai; assert( nRoot>0 ); - aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(nRoot+1) ); - if( aRoot==0 ) goto no_mem; - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); + assert( aRoot[nRoot]==0 ); + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pnErr = &aMem[pOp->p3]; assert( (pnErr->flags & MEM_Int)!=0 ); assert( (pnErr->flags & (MEM_Str|MEM_Blob))==0 ); pIn1 = &aMem[pOp->p1]; - for(j=0; jp5nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p5))!=0 ); + assert( DbMaskTest(p->btreeMask, pOp->p5) ); z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, aRoot, nRoot, (int)pnErr->u.i, &nErr); - sqlite3DbFree(db, aRoot); pnErr->u.i -= nErr; sqlite3VdbeMemSetNull(pIn1); if( nErr==0 ){ @@ -71529,7 +83687,7 @@ case OP_IntegrityCk: { #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ /* Opcode: RowSetAdd P1 P2 * * * -** Synopsis: rowset(P1)=r[P2] +** Synopsis: rowset(P1)=r[P2] ** ** Insert the integer value held by register P2 into a boolean index ** held in register P1. @@ -71549,7 +83707,7 @@ case OP_RowSetAdd: { /* in1, in2 */ } /* Opcode: RowSetRead P1 P2 P3 * * -** Synopsis: r[P3]=rowset(P1) +** Synopsis: r[P3]=rowset(P1) ** ** Extract the smallest value from boolean index P1 and put that value into ** register P3. Or, if boolean index P1 is initially empty, leave P3 @@ -71564,9 +83722,11 @@ case OP_RowSetRead: { /* jump, in1, out3 */ ){ /* The boolean index is empty */ sqlite3VdbeMemSetNull(pIn1); - pc = pOp->p2 - 1; + VdbeBranchTaken(1,2); + goto jump_to_p2_and_check_for_interrupt; }else{ /* A value was pulled from the index */ + VdbeBranchTaken(0,2); sqlite3VdbeMemSetInt64(&aMem[pOp->p3], val); } goto check_for_interrupt; @@ -71616,13 +83776,9 @@ case OP_RowSetTest: { /* jump, in1, in3 */ assert( pOp->p4type==P4_INT32 ); assert( iSet==-1 || iSet>=0 ); if( iSet ){ - exists = sqlite3RowSetTest(pIn1->u.pRowSet, - (u8)(iSet>=0 ? iSet & 0xf : 0xff), - pIn3->u.i); - if( exists ){ - pc = pOp->p2 - 1; - break; - } + exists = sqlite3RowSetTest(pIn1->u.pRowSet, iSet, pIn3->u.i); + VdbeBranchTaken(exists!=0,2); + if( exists ) goto jump_to_p2; } if( iSet>=0 ){ sqlite3RowSetInsert(pIn1->u.pRowSet, pIn3->u.i); @@ -71633,7 +83789,7 @@ case OP_RowSetTest: { /* jump, in1, in3 */ #ifndef SQLITE_OMIT_TRIGGER -/* Opcode: Program P1 P2 P3 P4 * +/* Opcode: Program P1 P2 P3 P4 P5 ** ** Execute the trigger program passed as P4 (type P4_SUBPROGRAM). ** @@ -71645,6 +83801,8 @@ case OP_RowSetTest: { /* jump, in1, in3 */ ** memory required by the sub-vdbe at runtime. ** ** P4 is a pointer to the VM containing the trigger program. +** +** If P5 is non-zero, then recursive program invocation is enabled. */ case OP_Program: { /* jump */ int nMem; /* Number of memory registers for sub-program */ @@ -71679,8 +83837,8 @@ case OP_Program: { /* jump */ if( p->nFrame>=db->aLimit[SQLITE_LIMIT_TRIGGER_DEPTH] ){ rc = SQLITE_ERROR; - sqlite3SetString(&p->zErrMsg, db, "too many levels of trigger recursion"); - break; + sqlite3VdbeError(p, "too many levels of trigger recursion"); + goto abort_due_to_error; } /* Register pRt is used to store the memory required to save the state @@ -71694,10 +83852,11 @@ case OP_Program: { /* jump */ ** variable nMem (and later, VdbeFrame.nChildMem) to this value. */ nMem = pProgram->nMem + pProgram->nCsr; + assert( nMem>0 ); + if( pProgram->nCsr==0 ) nMem++; nByte = ROUND8(sizeof(VdbeFrame)) + nMem * sizeof(Mem) - + pProgram->nCsr * sizeof(VdbeCursor *) - + pProgram->nOnce * sizeof(u8); + + pProgram->nCsr * sizeof(VdbeCursor *); pFrame = sqlite3DbMallocZero(db, nByte); if( !pFrame ){ goto no_mem; @@ -71709,7 +83868,7 @@ case OP_Program: { /* jump */ pFrame->v = p; pFrame->nChildMem = nMem; pFrame->nChildCsr = pProgram->nCsr; - pFrame->pc = pc; + pFrame->pc = (int)(pOp - aOp); pFrame->aMem = p->aMem; pFrame->nMem = p->nMem; pFrame->apCsr = p->apCsr; @@ -71717,37 +83876,43 @@ case OP_Program: { /* jump */ pFrame->aOp = p->aOp; pFrame->nOp = p->nOp; pFrame->token = pProgram->token; - pFrame->aOnceFlag = p->aOnceFlag; - pFrame->nOnceFlag = p->nOnceFlag; +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + pFrame->anExec = p->anExec; +#endif pEnd = &VdbeFrameMem(pFrame)[pFrame->nChildMem]; for(pMem=VdbeFrameMem(pFrame); pMem!=pEnd; pMem++){ - pMem->flags = MEM_Invalid; + pMem->flags = MEM_Undefined; pMem->db = db; } }else{ pFrame = pRt->u.pFrame; - assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem ); + assert( pProgram->nMem+pProgram->nCsr==pFrame->nChildMem + || (pProgram->nCsr==0 && pProgram->nMem+1==pFrame->nChildMem) ); assert( pProgram->nCsr==pFrame->nChildCsr ); - assert( pc==pFrame->pc ); + assert( (int)(pOp - aOp)==pFrame->pc ); } p->nFrame++; pFrame->pParent = p->pFrame; - pFrame->lastRowid = lastRowid; + pFrame->lastRowid = db->lastRowid; pFrame->nChange = p->nChange; + pFrame->nDbChange = p->db->nChange; + assert( pFrame->pAuxData==0 ); + pFrame->pAuxData = p->pAuxData; + p->pAuxData = 0; p->nChange = 0; p->pFrame = pFrame; - p->aMem = aMem = &VdbeFrameMem(pFrame)[-1]; + p->aMem = aMem = VdbeFrameMem(pFrame); p->nMem = pFrame->nChildMem; p->nCursor = (u16)pFrame->nChildCsr; - p->apCsr = (VdbeCursor **)&aMem[p->nMem+1]; + p->apCsr = (VdbeCursor **)&aMem[p->nMem]; p->aOp = aOp = pProgram->aOp; p->nOp = pProgram->nOp; - p->aOnceFlag = (u8 *)&p->apCsr[p->nCursor]; - p->nOnceFlag = pProgram->nOnce; - pc = -1; - memset(p->aOnceFlag, 0, p->nOnceFlag); +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + p->anExec = 0; +#endif + pOp = &aOp[-1]; break; } @@ -71764,9 +83929,10 @@ case OP_Program: { /* jump */ ** the value of the P1 argument to the value of the P1 argument to the ** calling OP_Program instruction. */ -case OP_Param: { /* out2-prerelease */ +case OP_Param: { /* out2 */ VdbeFrame *pFrame; Mem *pIn; + pOut = out2Prerelease(p, pOp); pFrame = p->pFrame; pIn = &pFrame->aMem[pOp->p1 + pFrame->aOp[pFrame->pc].p1]; sqlite3VdbeMemShallowCopy(pOut, pIn, MEM_Ephem); @@ -71809,9 +83975,11 @@ case OP_FkCounter: { */ case OP_FkIfZero: { /* jump */ if( pOp->p1 ){ - if( db->nDeferredCons==0 && db->nDeferredImmCons==0 ) pc = pOp->p2-1; + VdbeBranchTaken(db->nDeferredCons==0 && db->nDeferredImmCons==0, 2); + if( db->nDeferredCons==0 && db->nDeferredImmCons==0 ) goto jump_to_p2; }else{ - if( p->nFkConstraint==0 && db->nDeferredImmCons==0 ) pc = pOp->p2-1; + VdbeBranchTaken(p->nFkConstraint==0 && db->nDeferredImmCons==0, 2); + if( p->nFkConstraint==0 && db->nDeferredImmCons==0 ) goto jump_to_p2; } break; } @@ -71848,120 +84016,199 @@ case OP_MemMax: { /* in2 */ } #endif /* SQLITE_OMIT_AUTOINCREMENT */ -/* Opcode: IfPos P1 P2 * * * -** Synopsis: if r[P1]>0 goto P2 +/* Opcode: IfPos P1 P2 P3 * * +** Synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 ** -** If the value of register P1 is 1 or greater, jump to P2. +** Register P1 must contain an integer. +** If the value of register P1 is 1 or greater, subtract P3 from the +** value in P1 and jump to P2. ** -** It is illegal to use this instruction on a register that does -** not contain an integer. An assertion fault will result if you try. +** If the initial value of register P1 is less than 1, then the +** value is unchanged and control passes through to the next instruction. */ case OP_IfPos: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); + VdbeBranchTaken( pIn1->u.i>0, 2); if( pIn1->u.i>0 ){ - pc = pOp->p2 - 1; + pIn1->u.i -= pOp->p3; + goto jump_to_p2; } break; } -/* Opcode: IfNeg P1 P2 * * * -** Synopsis: if r[P1]<0 goto P2 +/* Opcode: OffsetLimit P1 P2 P3 * * +** Synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) ** -** If the value of register P1 is less than zero, jump to P2. +** This opcode performs a commonly used computation associated with +** LIMIT and OFFSET process. r[P1] holds the limit counter. r[P3] +** holds the offset counter. The opcode computes the combined value +** of the LIMIT and OFFSET and stores that value in r[P2]. The r[P2] +** value computed is the total number of rows that will need to be +** visited in order to complete the query. ** -** It is illegal to use this instruction on a register that does -** not contain an integer. An assertion fault will result if you try. +** If r[P3] is zero or negative, that means there is no OFFSET +** and r[P2] is set to be the value of the LIMIT, r[P1]. +** +** if r[P1] is zero or negative, that means there is no LIMIT +** and r[P2] is set to -1. +** +** Otherwise, r[P2] is set to the sum of r[P1] and r[P3]. */ -case OP_IfNeg: { /* jump, in1 */ +case OP_OffsetLimit: { /* in1, out2, in3 */ + i64 x; + pIn1 = &aMem[pOp->p1]; + pIn3 = &aMem[pOp->p3]; + pOut = out2Prerelease(p, pOp); + assert( pIn1->flags & MEM_Int ); + assert( pIn3->flags & MEM_Int ); + x = pIn1->u.i; + if( x<=0 || sqlite3AddInt64(&x, pIn3->u.i>0?pIn3->u.i:0) ){ + /* If the LIMIT is less than or equal to zero, loop forever. This + ** is documented. But also, if the LIMIT+OFFSET exceeds 2^63 then + ** also loop forever. This is undocumented. In fact, one could argue + ** that the loop should terminate. But assuming 1 billion iterations + ** per second (far exceeding the capabilities of any current hardware) + ** it would take nearly 300 years to actually reach the limit. So + ** looping forever is a reasonable approximation. */ + pOut->u.i = -1; + }else{ + pOut->u.i = x; + } + break; +} + +/* Opcode: IfNotZero P1 P2 * * * +** Synopsis: if r[P1]!=0 then r[P1]--, goto P2 +** +** Register P1 must contain an integer. If the content of register P1 is +** initially greater than zero, then decrement the value in register P1. +** If it is non-zero (negative or positive) and then also jump to P2. +** If register P1 is initially zero, leave it unchanged and fall through. +*/ +case OP_IfNotZero: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); - if( pIn1->u.i<0 ){ - pc = pOp->p2 - 1; + VdbeBranchTaken(pIn1->u.i<0, 2); + if( pIn1->u.i ){ + if( pIn1->u.i>0 ) pIn1->u.i--; + goto jump_to_p2; } break; } -/* Opcode: IfZero P1 P2 P3 * * -** Synopsis: r[P1]+=P3, if r[P1]==0 goto P2 +/* Opcode: DecrJumpZero P1 P2 * * * +** Synopsis: if (--r[P1])==0 goto P2 ** -** The register P1 must contain an integer. Add literal P3 to the -** value in register P1. If the result is exactly 0, jump to P2. -** -** It is illegal to use this instruction on a register that does -** not contain an integer. An assertion fault will result if you try. +** Register P1 must hold an integer. Decrement the value in P1 +** and jump to P2 if the new value is exactly zero. */ -case OP_IfZero: { /* jump, in1 */ +case OP_DecrJumpZero: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); - pIn1->u.i += pOp->p3; - if( pIn1->u.i==0 ){ - pc = pOp->p2 - 1; - } + if( pIn1->u.i>SMALLEST_INT64 ) pIn1->u.i--; + VdbeBranchTaken(pIn1->u.i==0, 2); + if( pIn1->u.i==0 ) goto jump_to_p2; break; } -/* Opcode: AggStep * P2 P3 P4 P5 + +/* Opcode: AggStep0 * P2 P3 P4 P5 ** Synopsis: accum=r[P3] step(r[P2@P5]) ** ** Execute the step function for an aggregate. The ** function has P5 arguments. P4 is a pointer to the FuncDef -** structure that specifies the function. Use register -** P3 as the accumulator. +** structure that specifies the function. Register P3 is the +** accumulator. ** ** The P5 arguments are taken from register P2 and its ** successors. */ -case OP_AggStep: { +/* Opcode: AggStep * P2 P3 P4 P5 +** Synopsis: accum=r[P3] step(r[P2@P5]) +** +** Execute the step function for an aggregate. The +** function has P5 arguments. P4 is a pointer to an sqlite3_context +** object that is used to run the function. Register P3 is +** as the accumulator. +** +** The P5 arguments are taken from register P2 and its +** successors. +** +** This opcode is initially coded as OP_AggStep0. On first evaluation, +** the FuncDef stored in P4 is converted into an sqlite3_context and +** the opcode is changed. In this way, the initialization of the +** sqlite3_context only happens once, instead of on each call to the +** step function. +*/ +case OP_AggStep0: { int n; - int i; - Mem *pMem; - Mem *pRec; - sqlite3_context ctx; - sqlite3_value **apVal; + sqlite3_context *pCtx; + assert( pOp->p4type==P4_FUNCDEF ); n = pOp->p5; - assert( n>=0 ); - pRec = &aMem[pOp->p2]; - apVal = p->apArg; - assert( apVal || n==0 ); - for(i=0; ip3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); + assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem+1 - p->nCursor)+1) ); + assert( pOp->p3p2 || pOp->p3>=pOp->p2+n ); + pCtx = sqlite3DbMallocRawNN(db, sizeof(*pCtx) + (n-1)*sizeof(sqlite3_value*)); + if( pCtx==0 ) goto no_mem; + pCtx->pMem = 0; + pCtx->pFunc = pOp->p4.pFunc; + pCtx->iOp = (int)(pOp - aOp); + pCtx->pVdbe = p; + pCtx->argc = n; + pOp->p4type = P4_FUNCCTX; + pOp->p4.pCtx = pCtx; + pOp->opcode = OP_AggStep; + /* Fall through into OP_AggStep */ +} +case OP_AggStep: { + int i; + sqlite3_context *pCtx; + Mem *pMem; + Mem t; + + assert( pOp->p4type==P4_FUNCCTX ); + pCtx = pOp->p4.pCtx; + pMem = &aMem[pOp->p3]; + + /* If this function is inside of a trigger, the register array in aMem[] + ** might change from one evaluation to the next. The next block of code + ** checks to see if the register array has changed, and if so it + ** reinitializes the relavant parts of the sqlite3_context object */ + if( pCtx->pMem != pMem ){ + pCtx->pMem = pMem; + for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i]; } - ctx.pFunc = pOp->p4.pFunc; - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); - ctx.pMem = pMem = &aMem[pOp->p3]; + +#ifdef SQLITE_DEBUG + for(i=0; iargc; i++){ + assert( memIsValid(pCtx->argv[i]) ); + REGISTER_TRACE(pOp->p2+i, pCtx->argv[i]); + } +#endif + pMem->n++; - ctx.s.flags = MEM_Null; - ctx.s.z = 0; - ctx.s.zMalloc = 0; - ctx.s.xDel = 0; - ctx.s.db = db; - ctx.isError = 0; - ctx.pColl = 0; - ctx.skipFlag = 0; - if( ctx.pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){ - assert( pOp>p->aOp ); - assert( pOp[-1].p4type==P4_COLLSEQ ); - assert( pOp[-1].opcode==OP_CollSeq ); - ctx.pColl = pOp[-1].p4.pColl; + sqlite3VdbeMemInit(&t, db, MEM_Null); + pCtx->pOut = &t; + pCtx->fErrorOrAux = 0; + pCtx->skipFlag = 0; + (pCtx->pFunc->xSFunc)(pCtx,pCtx->argc,pCtx->argv); /* IMP: R-24505-23230 */ + if( pCtx->fErrorOrAux ){ + if( pCtx->isError ){ + sqlite3VdbeError(p, "%s", sqlite3_value_text(&t)); + rc = pCtx->isError; + } + sqlite3VdbeMemRelease(&t); + if( rc ) goto abort_due_to_error; + }else{ + assert( t.flags==MEM_Null ); } - (ctx.pFunc->xStep)(&ctx, n, apVal); /* IMP: R-24505-23230 */ - if( ctx.isError ){ - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(&ctx.s)); - rc = ctx.isError; - } - if( ctx.skipFlag ){ + if( pCtx->skipFlag ){ assert( pOp[-1].opcode==OP_CollSeq ); i = pOp[-1].p1; if( i ) sqlite3VdbeMemSetInt64(&aMem[i], 1); } - - sqlite3VdbeMemRelease(&ctx.s); - break; } @@ -71980,12 +84227,13 @@ case OP_AggStep: { */ case OP_AggFinal: { Mem *pMem; - assert( pOp->p1>0 && pOp->p1<=(p->nMem-p->nCursor) ); + assert( pOp->p1>0 && pOp->p1<=(p->nMem+1 - p->nCursor) ); pMem = &aMem[pOp->p1]; assert( (pMem->flags & ~(MEM_Null|MEM_Agg))==0 ); rc = sqlite3VdbeMemFinalize(pMem, pOp->p4.pFunc); if( rc ){ - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3_value_text(pMem)); + sqlite3VdbeError(p, "%s", sqlite3_value_text(pMem)); + goto abort_due_to_error; } sqlite3VdbeChangeEncoding(pMem, encoding); UPDATE_MAX_BLOBSIZE(pMem); @@ -71999,8 +84247,8 @@ case OP_AggFinal: { /* Opcode: Checkpoint P1 P2 P3 * * ** ** Checkpoint database P1. This is a no-op if P1 is not currently in -** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL -** or RESTART. Write 1 or 0 into mem[P3] if the checkpoint returns +** WAL mode. Parameter P2 is one of SQLITE_CHECKPOINT_PASSIVE, FULL, +** RESTART, or TRUNCATE. Write 1 or 0 into mem[P3] if the checkpoint returns ** SQLITE_BUSY or not, respectively. Write the number of pages in the ** WAL after the checkpoint into mem[P3+1] and the number of pages ** in the WAL that have been checkpointed after the checkpoint @@ -72018,9 +84266,11 @@ case OP_Checkpoint: { assert( pOp->p2==SQLITE_CHECKPOINT_PASSIVE || pOp->p2==SQLITE_CHECKPOINT_FULL || pOp->p2==SQLITE_CHECKPOINT_RESTART + || pOp->p2==SQLITE_CHECKPOINT_TRUNCATE ); rc = sqlite3Checkpoint(db, pOp->p1, pOp->p2, &aRes[1], &aRes[2]); - if( rc==SQLITE_BUSY ){ + if( rc ){ + if( rc!=SQLITE_BUSY ) goto abort_due_to_error; rc = SQLITE_OK; aRes[0] = 1; } @@ -72032,7 +84282,7 @@ case OP_Checkpoint: { #endif #ifndef SQLITE_OMIT_PRAGMA -/* Opcode: JournalMode P1 P2 P3 * P5 +/* Opcode: JournalMode P1 P2 P3 * * ** ** Change the journal mode of database P1 to P3. P3 must be one of the ** PAGER_JOURNALMODE_XXX values. If changing between the various rollback @@ -72043,7 +84293,7 @@ case OP_Checkpoint: { ** ** Write a string containing the final journal-mode to register P2. */ -case OP_JournalMode: { /* out2-prerelease */ +case OP_JournalMode: { /* out2 */ Btree *pBt; /* Btree to change journal mode of */ Pager *pPager; /* Pager associated with pBt */ int eNew; /* New journal mode */ @@ -72052,6 +84302,7 @@ case OP_JournalMode: { /* out2-prerelease */ const char *zFilename; /* Name of database file for pPager */ #endif + pOut = out2Prerelease(p, pOp); eNew = pOp->p3; assert( eNew==PAGER_JOURNALMODE_DELETE || eNew==PAGER_JOURNALMODE_TRUNCATE @@ -72088,11 +84339,11 @@ case OP_JournalMode: { /* out2-prerelease */ ){ if( !db->autoCommit || db->nVdbeRead>1 ){ rc = SQLITE_ERROR; - sqlite3SetString(&p->zErrMsg, db, + sqlite3VdbeError(p, "cannot change %s wal mode from within a transaction", (eNew==PAGER_JOURNALMODE_WAL ? "into" : "out of") ); - break; + goto abort_due_to_error; }else{ if( eOld==PAGER_JOURNALMODE_WAL ){ @@ -72101,7 +84352,7 @@ case OP_JournalMode: { /* out2-prerelease */ ** file. An EXCLUSIVE lock may still be held on the database file ** after a successful return. */ - rc = sqlite3PagerCloseWal(pPager); + rc = sqlite3PagerCloseWal(pPager, db); if( rc==SQLITE_OK ){ sqlite3PagerSetJournalMode(pPager, eNew); } @@ -72122,31 +84373,29 @@ case OP_JournalMode: { /* out2-prerelease */ } #endif /* ifndef SQLITE_OMIT_WAL */ - if( rc ){ - eNew = eOld; - } + if( rc ) eNew = eOld; eNew = sqlite3PagerSetJournalMode(pPager, eNew); - pOut = &aMem[pOp->p2]; pOut->flags = MEM_Str|MEM_Static|MEM_Term; pOut->z = (char *)sqlite3JournalModename(eNew); pOut->n = sqlite3Strlen30(pOut->z); pOut->enc = SQLITE_UTF8; sqlite3VdbeChangeEncoding(pOut, encoding); + if( rc ) goto abort_due_to_error; break; }; #endif /* SQLITE_OMIT_PRAGMA */ #if !defined(SQLITE_OMIT_VACUUM) && !defined(SQLITE_OMIT_ATTACH) -/* Opcode: Vacuum * * * * * +/* Opcode: Vacuum P1 * * * * ** -** Vacuum the entire database. This opcode will cause other virtual -** machines to be created and run. It may not be called from within -** a transaction. +** Vacuum the entire database P1. P1 is 0 for "main", and 2 or more +** for an attached database. The "temp" database may not be vacuumed. */ case OP_Vacuum: { assert( p->readOnly==0 ); - rc = sqlite3RunVacuum(&p->zErrMsg, db); + rc = sqlite3RunVacuum(&p->zErrMsg, db, pOp->p1); + if( rc ) goto abort_due_to_error; break; } #endif @@ -72162,13 +84411,15 @@ case OP_IncrVacuum: { /* jump */ Btree *pBt; assert( pOp->p1>=0 && pOp->p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<p1))!=0 ); + assert( DbMaskTest(p->btreeMask, pOp->p1) ); assert( p->readOnly==0 ); pBt = db->aDb[pOp->p1].pBt; rc = sqlite3BtreeIncrVacuum(pBt); - if( rc==SQLITE_DONE ){ - pc = pOp->p2 - 1; + VdbeBranchTaken(rc==SQLITE_DONE,2); + if( rc ){ + if( rc!=SQLITE_DONE ) goto abort_due_to_error; rc = SQLITE_OK; + goto jump_to_p2; } break; } @@ -72176,12 +84427,13 @@ case OP_IncrVacuum: { /* jump */ /* Opcode: Expire P1 * * * * ** -** Cause precompiled statements to become expired. An expired statement -** fails with an error code of SQLITE_SCHEMA if it is ever executed -** (via sqlite3_step()). +** Cause precompiled statements to expire. When an expired statement +** is executed using sqlite3_step() it will either automatically +** reprepare itself (if it was originally created using sqlite3_prepare_v2()) +** or it will fail with SQLITE_SCHEMA. ** ** If P1 is 0, then all SQL statements become expired. If P1 is non-zero, -** then only the currently executing statement is affected. +** then only the currently executing statement is expired. */ case OP_Expire: { if( !pOp->p1 ){ @@ -72213,12 +84465,15 @@ case OP_TableLock: { if( isWriteLock || 0==(db->flags&SQLITE_ReadUncommitted) ){ int p1 = pOp->p1; assert( p1>=0 && p1nDb ); - assert( (p->btreeMask & (((yDbMask)1)<btreeMask, p1) ); assert( isWriteLock==0 || isWriteLock==1 ); rc = sqlite3BtreeLockTable(db->aDb[p1].pBt, pOp->p2, isWriteLock); - if( (rc&0xFF)==SQLITE_LOCKED ){ - const char *z = pOp->p4.z; - sqlite3SetString(&p->zErrMsg, db, "database table is locked: %s", z); + if( rc ){ + if( (rc&0xFF)==SQLITE_LOCKED ){ + const char *z = pOp->p4.z; + sqlite3VdbeError(p, "database table is locked: %s", z); + } + goto abort_due_to_error; } } break; @@ -72240,18 +84495,36 @@ case OP_VBegin: { pVTab = pOp->p4.pVtab; rc = sqlite3VtabBegin(db, pVTab); if( pVTab ) sqlite3VtabImportErrmsg(p, pVTab->pVtab); + if( rc ) goto abort_due_to_error; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ #ifndef SQLITE_OMIT_VIRTUALTABLE -/* Opcode: VCreate P1 * * P4 * +/* Opcode: VCreate P1 P2 * * * ** -** P4 is the name of a virtual table in database P1. Call the xCreate method -** for that table. +** P2 is a register that holds the name of a virtual table in database +** P1. Call the xCreate method for that table. */ case OP_VCreate: { - rc = sqlite3VtabCallCreate(db, pOp->p1, pOp->p4.z, &p->zErrMsg); + Mem sMem; /* For storing the record being decoded */ + const char *zTab; /* Name of the virtual table */ + + memset(&sMem, 0, sizeof(sMem)); + sMem.db = db; + /* Because P2 is always a static string, it is impossible for the + ** sqlite3VdbeMemCopy() to fail */ + assert( (aMem[pOp->p2].flags & MEM_Str)!=0 ); + assert( (aMem[pOp->p2].flags & MEM_Static)!=0 ); + rc = sqlite3VdbeMemCopy(&sMem, &aMem[pOp->p2]); + assert( rc==SQLITE_OK ); + zTab = (const char*)sqlite3_value_text(&sMem); + assert( zTab || db->mallocFailed ); + if( zTab ){ + rc = sqlite3VtabCallCreate(db, pOp->p1, zTab, &p->zErrMsg); + } + sqlite3VdbeMemRelease(&sMem); + if( rc ) goto abort_due_to_error; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -72263,9 +84536,10 @@ case OP_VCreate: { ** of that table. */ case OP_VDestroy: { - p->inVtabMethod = 2; + db->nVDestroy++; rc = sqlite3VtabCallDestroy(db, pOp->p1, pOp->p4.z); - p->inVtabMethod = 0; + db->nVDestroy--; + if( rc ) goto abort_due_to_error; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -72279,30 +84553,35 @@ case OP_VDestroy: { */ case OP_VOpen: { VdbeCursor *pCur; - sqlite3_vtab_cursor *pVtabCursor; + sqlite3_vtab_cursor *pVCur; sqlite3_vtab *pVtab; - sqlite3_module *pModule; + const sqlite3_module *pModule; assert( p->bIsReader ); pCur = 0; - pVtabCursor = 0; + pVCur = 0; pVtab = pOp->p4.pVtab->pVtab; - pModule = (sqlite3_module *)pVtab->pModule; - assert(pVtab && pModule); - rc = pModule->xOpen(pVtab, &pVtabCursor); + if( pVtab==0 || NEVER(pVtab->pModule==0) ){ + rc = SQLITE_LOCKED; + goto abort_due_to_error; + } + pModule = pVtab->pModule; + rc = pModule->xOpen(pVtab, &pVCur); sqlite3VtabImportErrmsg(p, pVtab); - if( SQLITE_OK==rc ){ - /* Initialize sqlite3_vtab_cursor base class */ - pVtabCursor->pVtab = pVtab; + if( rc ) goto abort_due_to_error; - /* Initialize vdbe cursor object */ - pCur = allocateCursor(p, pOp->p1, 0, -1, 0); - if( pCur ){ - pCur->pVtabCursor = pVtabCursor; - }else{ - db->mallocFailed = 1; - pModule->xClose(pVtabCursor); - } + /* Initialize sqlite3_vtab_cursor base class */ + pVCur->pVtab = pVtab; + + /* Initialize vdbe cursor object */ + pCur = allocateCursor(p, pOp->p1, 0, -1, CURTYPE_VTAB); + if( pCur ){ + pCur->uc.pVCur = pVCur; + pVtab->nRef++; + }else{ + assert( db->mallocFailed ); + pModule->xClose(pVCur); + goto no_mem; } break; } @@ -72310,7 +84589,7 @@ case OP_VOpen: { #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VFilter P1 P2 P3 P4 * -** Synopsis: iPlan=r[P3] zPlan='P4' +** Synopsis: iplan=r[P3] zplan='P4' ** ** P1 is a cursor opened using VOpen. P2 is an address to jump to if ** the filtered result set is empty. @@ -72334,7 +84613,7 @@ case OP_VFilter: { /* jump */ const sqlite3_module *pModule; Mem *pQuery; Mem *pArgc; - sqlite3_vtab_cursor *pVtabCursor; + sqlite3_vtab_cursor *pVCur; sqlite3_vtab *pVtab; VdbeCursor *pCur; int res; @@ -72346,9 +84625,9 @@ case OP_VFilter: { /* jump */ pCur = p->apCsr[pOp->p1]; assert( memIsValid(pQuery) ); REGISTER_TRACE(pOp->p3, pQuery); - assert( pCur->pVtabCursor ); - pVtabCursor = pCur->pVtabCursor; - pVtab = pVtabCursor->pVtab; + assert( pCur->eCurType==CURTYPE_VTAB ); + pVCur = pCur->uc.pVCur; + pVtab = pVCur->pVtab; pModule = pVtab->pModule; /* Grab the index number and argc parameters */ @@ -72357,28 +84636,18 @@ case OP_VFilter: { /* jump */ iQuery = (int)pQuery->u.i; /* Invoke the xFilter method */ - { - res = 0; - apArg = p->apArg; - for(i = 0; iinVtabMethod = 1; - rc = pModule->xFilter(pVtabCursor, iQuery, pOp->p4.z, nArg, apArg); - p->inVtabMethod = 0; - sqlite3VtabImportErrmsg(p, pVtab); - if( rc==SQLITE_OK ){ - res = pModule->xEof(pVtabCursor); - } - - if( res ){ - pc = pOp->p2 - 1; - } + res = 0; + apArg = p->apArg; + for(i = 0; ixFilter(pVCur, iQuery, pOp->p4.z, nArg, apArg); + sqlite3VtabImportErrmsg(p, pVtab); + if( rc ) goto abort_due_to_error; + res = pModule->xEof(pVCur); pCur->nullRow = 0; - + VdbeBranchTaken(res!=0,2); + if( res ) goto jump_to_p2; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -72398,45 +84667,33 @@ case OP_VColumn: { sqlite3_context sContext; VdbeCursor *pCur = p->apCsr[pOp->p1]; - assert( pCur->pVtabCursor ); - assert( pOp->p3>0 && pOp->p3<=(p->nMem-p->nCursor) ); + assert( pCur->eCurType==CURTYPE_VTAB ); + assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) ); pDest = &aMem[pOp->p3]; memAboutToChange(p, pDest); if( pCur->nullRow ){ sqlite3VdbeMemSetNull(pDest); break; } - pVtab = pCur->pVtabCursor->pVtab; + pVtab = pCur->uc.pVCur->pVtab; pModule = pVtab->pModule; assert( pModule->xColumn ); memset(&sContext, 0, sizeof(sContext)); - - /* The output cell may already have a buffer allocated. Move - ** the current contents to sContext.s so in case the user-function - ** can use the already allocated buffer instead of allocating a - ** new one. - */ - sqlite3VdbeMemMove(&sContext.s, pDest); - MemSetTypeFlag(&sContext.s, MEM_Null); - - rc = pModule->xColumn(pCur->pVtabCursor, &sContext, pOp->p2); + sContext.pOut = pDest; + MemSetTypeFlag(pDest, MEM_Null); + rc = pModule->xColumn(pCur->uc.pVCur, &sContext, pOp->p2); sqlite3VtabImportErrmsg(p, pVtab); if( sContext.isError ){ rc = sContext.isError; } - - /* Copy the result of the function to the P3 register. We - ** do this regardless of whether or not an error occurred to ensure any - ** dynamic allocation in sContext.s (a Mem struct) is released. - */ - sqlite3VdbeChangeEncoding(&sContext.s, encoding); - sqlite3VdbeMemMove(pDest, &sContext.s); + sqlite3VdbeChangeEncoding(pDest, encoding); REGISTER_TRACE(pOp->p3, pDest); UPDATE_MAX_BLOBSIZE(pDest); if( sqlite3VdbeMemTooBig(pDest) ){ goto too_big; } + if( rc ) goto abort_due_to_error; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -72456,11 +84713,11 @@ case OP_VNext: { /* jump */ res = 0; pCur = p->apCsr[pOp->p1]; - assert( pCur->pVtabCursor ); + assert( pCur->eCurType==CURTYPE_VTAB ); if( pCur->nullRow ){ break; } - pVtab = pCur->pVtabCursor->pVtab; + pVtab = pCur->uc.pVCur->pVtab; pModule = pVtab->pModule; assert( pModule->xNext ); @@ -72470,17 +84727,14 @@ case OP_VNext: { /* jump */ ** data is available) and the error code returned when xColumn or ** some other method is next invoked on the save virtual table cursor. */ - p->inVtabMethod = 1; - rc = pModule->xNext(pCur->pVtabCursor); - p->inVtabMethod = 0; + rc = pModule->xNext(pCur->uc.pVCur); sqlite3VtabImportErrmsg(p, pVtab); - if( rc==SQLITE_OK ){ - res = pModule->xEof(pCur->pVtabCursor); - } - + if( rc ) goto abort_due_to_error; + res = pModule->xEof(pCur->uc.pVCur); + VdbeBranchTaken(!res,2); if( !res ){ /* If there is data, jump to P2 */ - pc = pOp->p2 - 1; + goto jump_to_p2_and_check_for_interrupt; } goto check_for_interrupt; } @@ -72508,17 +84762,17 @@ case OP_VRename: { testcase( pName->enc==SQLITE_UTF16BE ); testcase( pName->enc==SQLITE_UTF16LE ); rc = sqlite3VdbeChangeEncoding(pName, SQLITE_UTF8); - if( rc==SQLITE_OK ){ - rc = pVtab->pModule->xRename(pVtab, pName->z); - sqlite3VtabImportErrmsg(p, pVtab); - p->expired = 0; - } + if( rc ) goto abort_due_to_error; + rc = pVtab->pModule->xRename(pVtab, pName->z); + sqlite3VtabImportErrmsg(p, pVtab); + p->expired = 0; + if( rc ) goto abort_due_to_error; break; } #endif #ifndef SQLITE_OMIT_VIRTUALTABLE -/* Opcode: VUpdate P1 P2 P3 P4 * +/* Opcode: VUpdate P1 P2 P3 P4 P5 ** Synopsis: data=r[P3@P2] ** ** P4 is a pointer to a virtual table object, an sqlite3_vtab structure. @@ -72541,10 +84795,13 @@ case OP_VRename: { ** P1 is a boolean flag. If it is set to true and the xUpdate call ** is successful, then the value returned by sqlite3_last_insert_rowid() ** is set to the value of the rowid for the row just inserted. +** +** P5 is the error actions (OE_Replace, OE_Fail, OE_Ignore, etc) to +** apply in the case of a constraint failure on an insert or update. */ case OP_VUpdate: { sqlite3_vtab *pVtab; - sqlite3_module *pModule; + const sqlite3_module *pModule; int nArg; int i; sqlite_int64 rowid; @@ -72556,7 +84813,11 @@ case OP_VUpdate: { ); assert( p->readOnly==0 ); pVtab = pOp->p4.pVtab->pVtab; - pModule = (sqlite3_module *)pVtab->pModule; + if( pVtab==0 || NEVER(pVtab->pModule==0) ){ + rc = SQLITE_LOCKED; + goto abort_due_to_error; + } + pModule = pVtab->pModule; nArg = pOp->p2; assert( pOp->p4type==P4_VTAB ); if( ALWAYS(pModule->xUpdate) ){ @@ -72566,7 +84827,6 @@ case OP_VUpdate: { for(i=0; ip1 ){ assert( nArg>1 && apArg[0] && (apArg[0]->flags&MEM_Null) ); - db->lastRowid = lastRowid = rowid; + db->lastRowid = rowid; } if( (rc&0xff)==SQLITE_CONSTRAINT && pOp->p4.pVtab->bConstraint ){ if( pOp->p5==OE_Ignore ){ @@ -72587,6 +84847,7 @@ case OP_VUpdate: { }else{ p->nChange++; } + if( rc ) goto abort_due_to_error; } break; } @@ -72597,7 +84858,8 @@ case OP_VUpdate: { ** ** Write the current number of pages in database P1 to memory cell P2. */ -case OP_Pagecount: { /* out2-prerelease */ +case OP_Pagecount: { /* out2 */ + pOut = out2Prerelease(p, pOp); pOut->u.i = sqlite3BtreeLastPage(db->aDb[pOp->p1].pBt); break; } @@ -72613,10 +84875,11 @@ case OP_Pagecount: { /* out2-prerelease */ ** ** Store the maximum page count after the change in register P2. */ -case OP_MaxPgcnt: { /* out2-prerelease */ +case OP_MaxPgcnt: { /* out2 */ unsigned int newMax; Btree *pBt; + pOut = out2Prerelease(p, pOp); pBt = db->aDb[pOp->p1].pBt; newMax = 0; if( pOp->p3 ){ @@ -72629,31 +84892,61 @@ case OP_MaxPgcnt: { /* out2-prerelease */ #endif -#ifndef SQLITE_OMIT_TRACE -/* Opcode: Trace * * * P4 * +/* Opcode: Init P1 P2 * P4 * +** Synopsis: Start at P2 +** +** Programs contain a single instance of this opcode as the very first +** opcode. ** ** If tracing is enabled (by the sqlite3_trace()) interface, then ** the UTF-8 string contained in P4 is emitted on the trace callback. +** Or if P4 is blank, use the string returned by sqlite3_sql(). +** +** If P2 is not zero, jump to instruction P2. +** +** Increment the value of P1 so that OP_Once opcodes will jump the +** first time they are evaluated for this run. */ -case OP_Trace: { +case OP_Init: { /* jump */ char *zTrace; - char *z; + int i; - if( db->xTrace + /* If the P4 argument is not NULL, then it must be an SQL comment string. + ** The "--" string is broken up to prevent false-positives with srcck1.c. + ** + ** This assert() provides evidence for: + ** EVIDENCE-OF: R-50676-09860 The callback can compute the same text that + ** would have been returned by the legacy sqlite3_trace() interface by + ** using the X argument when X begins with "--" and invoking + ** sqlite3_expanded_sql(P) otherwise. + */ + assert( pOp->p4.z==0 || strncmp(pOp->p4.z, "-" "- ", 3)==0 ); + assert( pOp==p->aOp ); /* Always instruction 0 */ + +#ifndef SQLITE_OMIT_TRACE + if( (db->mTrace & (SQLITE_TRACE_STMT|SQLITE_TRACE_LEGACY))!=0 && !p->doingRerun && (zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql))!=0 ){ - z = sqlite3VdbeExpandSql(p, zTrace); - db->xTrace(db->pTraceArg, z); - sqlite3DbFree(db, z); +#ifndef SQLITE_OMIT_DEPRECATED + if( db->mTrace & SQLITE_TRACE_LEGACY ){ + void (*x)(void*,const char*) = (void(*)(void*,const char*))db->xTrace; + char *z = sqlite3VdbeExpandSql(p, zTrace); + x(db->pTraceArg, z); + sqlite3_free(z); + }else +#endif + { + (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace); + } } #ifdef SQLITE_USE_FCNTL_TRACE zTrace = (pOp->p4.z ? pOp->p4.z : p->zSql); if( zTrace ){ - int i; - for(i=0; inDb; i++){ - if( MASKBIT(i) & p->btreeMask)==0 ) continue; - sqlite3_file_control(db, db->aDb[i].zName, SQLITE_FCNTL_TRACE, zTrace); + int j; + for(j=0; jnDb; j++){ + if( DbMaskTest(p->btreeMask, j)==0 ) continue; + sqlite3_file_control(db, db->aDb[j].zDbSName, SQLITE_FCNTL_TRACE, zTrace); } } #endif /* SQLITE_USE_FCNTL_TRACE */ @@ -72664,10 +84957,40 @@ case OP_Trace: { sqlite3DebugPrintf("SQL-trace: %s\n", zTrace); } #endif /* SQLITE_DEBUG */ +#endif /* SQLITE_OMIT_TRACE */ + assert( pOp->p2>0 ); + if( pOp->p1>=sqlite3GlobalConfig.iOnceResetThreshold ){ + for(i=1; inOp; i++){ + if( p->aOp[i].opcode==OP_Once ) p->aOp[i].p1 = 0; + } + pOp->p1 = 0; + } + pOp->p1++; + goto jump_to_p2; +} + +#ifdef SQLITE_ENABLE_CURSOR_HINTS +/* Opcode: CursorHint P1 * * P4 * +** +** Provide a hint to cursor P1 that it only needs to return rows that +** satisfy the Expr in P4. TK_REGISTER terms in the P4 expression refer +** to values currently held in registers. TK_COLUMN terms in the P4 +** expression refer to columns in the b-tree to which cursor P1 is pointing. +*/ +case OP_CursorHint: { + VdbeCursor *pC; + + assert( pOp->p1>=0 && pOp->p1nCursor ); + assert( pOp->p4type==P4_EXPR ); + pC = p->apCsr[pOp->p1]; + if( pC ){ + assert( pC->eCurType==CURTYPE_BTREE ); + sqlite3BtreeCursorHint(pC->uc.pCursor, BTREE_HINT_RANGE, + pOp->p4.pExpr, aMem); + } break; } -#endif - +#endif /* SQLITE_ENABLE_CURSOR_HINTS */ /* Opcode: Noop * * * * * ** @@ -72695,13 +85018,9 @@ default: { /* This is really OP_Noop and OP_Explain */ #ifdef VDBE_PROFILE { - u64 elapsed = sqlite3Hwtime() - start; - pOp->cycles += elapsed; - pOp->cnt++; -#if 0 - fprintf(stdout, "%10llu ", elapsed); - sqlite3VdbePrintOp(stdout, origPc, &aOp[origPc]); -#endif + u64 endTime = sqlite3Hwtime(); + if( endTime>start ) pOrigOp->cycles += endTime - start; + pOrigOp->cnt++; } #endif @@ -72711,16 +85030,17 @@ default: { /* This is really OP_Noop and OP_Explain */ ** the evaluator loop. So we can leave it out when NDEBUG is defined. */ #ifndef NDEBUG - assert( pc>=-1 && pcnOp ); + assert( pOp>=&aOp[-1] && pOp<&aOp[p->nOp-1] ); #ifdef SQLITE_DEBUG if( db->flags & SQLITE_VdbeTrace ){ + u8 opProperty = sqlite3OpcodeProperty[pOrigOp->opcode]; if( rc!=0 ) printf("rc=%d\n",rc); - if( pOp->opflags & (OPFLG_OUT2_PRERELEASE|OPFLG_OUT2) ){ - registerTrace(pOp->p2, &aMem[pOp->p2]); + if( opProperty & (OPFLG_OUT2) ){ + registerTrace(pOrigOp->p2, &aMem[pOrigOp->p2]); } - if( pOp->opflags & OPFLG_OUT3 ){ - registerTrace(pOp->p3, &aMem[pOp->p3]); + if( opProperty & OPFLG_OUT3 ){ + registerTrace(pOrigOp->p3, &aMem[pOrigOp->p3]); } } #endif /* SQLITE_DEBUG */ @@ -72730,14 +85050,19 @@ default: { /* This is really OP_Noop and OP_Explain */ /* If we reach this point, it means that execution is finished with ** an error of some kind. */ -vdbe_error_halt: +abort_due_to_error: + if( db->mallocFailed ) rc = SQLITE_NOMEM_BKPT; assert( rc ); + if( p->zErrMsg==0 && rc!=SQLITE_IOERR_NOMEM ){ + sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc)); + } p->rc = rc; + sqlite3SystemError(db, rc); testcase( sqlite3GlobalConfig.xLog!=0 ); sqlite3_log(rc, "statement aborts at %d: [%s] %s", - pc, p->zSql, p->zErrMsg); + (int)(pOp - aOp), p->zSql, p->zErrMsg); sqlite3VdbeHalt(p); - if( rc==SQLITE_IOERR_NOMEM ) db->mallocFailed = 1; + if( rc==SQLITE_IOERR_NOMEM ) sqlite3OomFault(db); rc = SQLITE_ERROR; if( resetSchemaOnFault>0 ){ sqlite3ResetOneSchema(db, resetSchemaOnFault-1); @@ -72747,48 +85072,39 @@ vdbe_error_halt: ** release the mutexes on btrees that were acquired at the ** top. */ vdbe_return: - db->lastRowid = lastRowid; testcase( nVmStep>0 ); p->aCounter[SQLITE_STMTSTATUS_VM_STEP] += (int)nVmStep; sqlite3VdbeLeave(p); + assert( rc!=SQLITE_OK || nExtraDelete==0 + || sqlite3_strlike("DELETE%",p->zSql,0)!=0 + ); return rc; /* Jump to here if a string or blob larger than SQLITE_MAX_LENGTH ** is encountered. */ too_big: - sqlite3SetString(&p->zErrMsg, db, "string or blob too big"); + sqlite3VdbeError(p, "string or blob too big"); rc = SQLITE_TOOBIG; - goto vdbe_error_halt; + goto abort_due_to_error; /* Jump to here if a malloc() fails. */ no_mem: - db->mallocFailed = 1; - sqlite3SetString(&p->zErrMsg, db, "out of memory"); - rc = SQLITE_NOMEM; - goto vdbe_error_halt; - - /* Jump to here for any other kind of fatal error. The "rc" variable - ** should hold the error number. - */ -abort_due_to_error: - assert( p->zErrMsg==0 ); - if( db->mallocFailed ) rc = SQLITE_NOMEM; - if( rc!=SQLITE_IOERR_NOMEM ){ - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3ErrStr(rc)); - } - goto vdbe_error_halt; + sqlite3OomFault(db); + sqlite3VdbeError(p, "out of memory"); + rc = SQLITE_NOMEM_BKPT; + goto abort_due_to_error; /* Jump to here if the sqlite3_interrupt() API sets the interrupt ** flag. */ abort_due_to_interrupt: assert( db->u1.isInterrupted ); - rc = SQLITE_INTERRUPT; + rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT; p->rc = rc; - sqlite3SetString(&p->zErrMsg, db, "%s", sqlite3ErrStr(rc)); - goto vdbe_error_halt; + sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc)); + goto abort_due_to_error; } @@ -72809,6 +85125,8 @@ abort_due_to_interrupt: ** This file contains code used to implement incremental BLOB I/O. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ #ifndef SQLITE_OMIT_INCRBLOB @@ -72817,13 +85135,14 @@ abort_due_to_interrupt: */ typedef struct Incrblob Incrblob; struct Incrblob { - int flags; /* Copy of "flags" passed to sqlite3_blob_open() */ int nByte; /* Size of open blob, in bytes */ int iOffset; /* Byte offset of blob in cursor data */ - int iCol; /* Table column this handle is open on */ + u16 iCol; /* Table column this handle is open on */ BtCursor *pCsr; /* Cursor pointing at blob row */ sqlite3_stmt *pStmt; /* Statement holding cursor open */ sqlite3 *db; /* The associated database */ + char *zDb; /* Database name */ + Table *pTab; /* Table object */ }; @@ -72849,17 +85168,27 @@ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){ char *zErr = 0; /* Error message */ Vdbe *v = (Vdbe *)p->pStmt; - /* Set the value of the SQL statements only variable to integer iRow. - ** This is done directly instead of using sqlite3_bind_int64() to avoid - ** triggering asserts related to mutexes. + /* Set the value of register r[1] in the SQL statement to integer iRow. + ** This is done directly as a performance optimization */ - assert( v->aVar[0].flags&MEM_Int ); - v->aVar[0].u.i = iRow; + v->aMem[1].flags = MEM_Int; + v->aMem[1].u.i = iRow; - rc = sqlite3_step(p->pStmt); + /* If the statement has been run before (and is paused at the OP_ResultRow) + ** then back it up to the point where it does the OP_SeekRowid. This could + ** have been down with an extra OP_Goto, but simply setting the program + ** counter is faster. */ + if( v->pc>3 ){ + v->pc = 3; + rc = sqlite3VdbeExec(v); + }else{ + rc = sqlite3_step(p->pStmt); + } if( rc==SQLITE_ROW ){ VdbeCursor *pC = v->apCsr[0]; - u32 type = pC->aType[p->iCol]; + u32 type = pC->nHdrParsed>p->iCol ? pC->aType[p->iCol] : 0; + testcase( pC->nHdrParsed==p->iCol ); + testcase( pC->nHdrParsed==p->iCol+1 ); if( type<12 ){ zErr = sqlite3MPrintf(p->db, "cannot open value of type %s", type==0?"null": type==7?"real": "integer" @@ -72870,10 +85199,8 @@ static int blobSeekToRow(Incrblob *p, sqlite3_int64 iRow, char **pzErr){ }else{ p->iOffset = pC->aType[p->iCol + pC->nField]; p->nByte = sqlite3VdbeSerialTypeLen(type); - p->pCsr = pC->pCursor; - sqlite3BtreeEnterCursor(p->pCsr); - sqlite3BtreeCacheOverflow(p->pCsr); - sqlite3BtreeLeaveCursor(p->pCsr); + p->pCsr = pC->uc.pCursor; + sqlite3BtreeIncrblobCursor(p->pCsr); } } @@ -72906,53 +85233,29 @@ SQLITE_API int sqlite3_blob_open( const char *zTable, /* The table containing the blob */ const char *zColumn, /* The column containing the blob */ sqlite_int64 iRow, /* The row containing the glob */ - int flags, /* True -> read/write access, false -> read-only */ + int wrFlag, /* True -> read/write access, false -> read-only */ sqlite3_blob **ppBlob /* Handle for accessing the blob returned here */ ){ int nAttempt = 0; int iCol; /* Index of zColumn in row-record */ - - /* This VDBE program seeks a btree cursor to the identified - ** db/table/row entry. The reason for using a vdbe program instead - ** of writing code to use the b-tree layer directly is that the - ** vdbe program will take advantage of the various transaction, - ** locking and error handling infrastructure built into the vdbe. - ** - ** After seeking the cursor, the vdbe executes an OP_ResultRow. - ** Code external to the Vdbe then "borrows" the b-tree cursor and - ** uses it to implement the blob_read(), blob_write() and - ** blob_bytes() functions. - ** - ** The sqlite3_blob_close() function finalizes the vdbe program, - ** which closes the b-tree cursor and (possibly) commits the - ** transaction. - */ - static const VdbeOpList openBlob[] = { - {OP_Transaction, 0, 0, 0}, /* 0: Start a transaction */ - {OP_VerifyCookie, 0, 0, 0}, /* 1: Check the schema cookie */ - {OP_TableLock, 0, 0, 0}, /* 2: Acquire a read or write lock */ - - /* One of the following two instructions is replaced by an OP_Noop. */ - {OP_OpenRead, 0, 0, 0}, /* 3: Open cursor 0 for reading */ - {OP_OpenWrite, 0, 0, 0}, /* 4: Open cursor 0 for read/write */ - - {OP_Variable, 1, 1, 1}, /* 5: Push the rowid to the stack */ - {OP_NotExists, 0, 10, 1}, /* 6: Seek the cursor */ - {OP_Column, 0, 0, 1}, /* 7 */ - {OP_ResultRow, 1, 0, 0}, /* 8 */ - {OP_Goto, 0, 5, 0}, /* 9 */ - {OP_Close, 0, 0, 0}, /* 10 */ - {OP_Halt, 0, 0, 0}, /* 11 */ - }; - int rc = SQLITE_OK; char *zErr = 0; Table *pTab; Parse *pParse = 0; Incrblob *pBlob = 0; - flags = !!flags; /* flags = (flags ? 1 : 0); */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( ppBlob==0 ){ + return SQLITE_MISUSE_BKPT; + } +#endif *ppBlob = 0; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zTable==0 ){ + return SQLITE_MISUSE_BKPT; + } +#endif + wrFlag = !!wrFlag; /* wrFlag = (wrFlag ? 1 : 0); */ sqlite3_mutex_enter(db->mutex); @@ -72993,6 +85296,8 @@ SQLITE_API int sqlite3_blob_open( sqlite3BtreeLeaveAll(db); goto blob_open_out; } + pBlob->pTab = pTab; + pBlob->zDb = db->aDb[sqlite3SchemaToIndex(db, pTab->pSchema)].zDbSName; /* Now search pTab for the exact column. */ for(iCol=0; iColnCol; iCol++) { @@ -73010,9 +85315,8 @@ SQLITE_API int sqlite3_blob_open( /* If the value is being opened for writing, check that the ** column is not indexed, and that it is not part of a foreign key. - ** It is against the rules to open a column to which either of these - ** descriptions applies for writing. */ - if( flags ){ + */ + if( wrFlag ){ const char *zFault = 0; Index *pIdx; #ifndef SQLITE_OMIT_FOREIGN_KEY @@ -73035,7 +85339,8 @@ SQLITE_API int sqlite3_blob_open( for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ int j; for(j=0; jnKeyCol; j++){ - if( pIdx->aiColumn[j]==iCol ){ + /* FIXME: Be smarter about indexes that use expressions */ + if( pIdx->aiColumn[j]==iCol || pIdx->aiColumn[j]==XN_EXPR ){ zFault = "indexed"; } } @@ -73052,65 +85357,89 @@ SQLITE_API int sqlite3_blob_open( pBlob->pStmt = (sqlite3_stmt *)sqlite3VdbeCreate(pParse); assert( pBlob->pStmt || db->mallocFailed ); if( pBlob->pStmt ){ + + /* This VDBE program seeks a btree cursor to the identified + ** db/table/row entry. The reason for using a vdbe program instead + ** of writing code to use the b-tree layer directly is that the + ** vdbe program will take advantage of the various transaction, + ** locking and error handling infrastructure built into the vdbe. + ** + ** After seeking the cursor, the vdbe executes an OP_ResultRow. + ** Code external to the Vdbe then "borrows" the b-tree cursor and + ** uses it to implement the blob_read(), blob_write() and + ** blob_bytes() functions. + ** + ** The sqlite3_blob_close() function finalizes the vdbe program, + ** which closes the b-tree cursor and (possibly) commits the + ** transaction. + */ + static const int iLn = VDBE_OFFSET_LINENO(2); + static const VdbeOpList openBlob[] = { + {OP_TableLock, 0, 0, 0}, /* 0: Acquire a read or write lock */ + {OP_OpenRead, 0, 0, 0}, /* 1: Open a cursor */ + /* blobSeekToRow() will initialize r[1] to the desired rowid */ + {OP_NotExists, 0, 5, 1}, /* 2: Seek the cursor to rowid=r[1] */ + {OP_Column, 0, 0, 1}, /* 3 */ + {OP_ResultRow, 1, 0, 0}, /* 4 */ + {OP_Halt, 0, 0, 0}, /* 5 */ + }; Vdbe *v = (Vdbe *)pBlob->pStmt; int iDb = sqlite3SchemaToIndex(db, pTab->pSchema); + VdbeOp *aOp; - sqlite3VdbeAddOpList(v, sizeof(openBlob)/sizeof(VdbeOpList), openBlob); - - - /* Configure the OP_Transaction */ - sqlite3VdbeChangeP1(v, 0, iDb); - sqlite3VdbeChangeP2(v, 0, flags); - - /* Configure the OP_VerifyCookie */ - sqlite3VdbeChangeP1(v, 1, iDb); - sqlite3VdbeChangeP2(v, 1, pTab->pSchema->schema_cookie); - sqlite3VdbeChangeP3(v, 1, pTab->pSchema->iGeneration); + sqlite3VdbeAddOp4Int(v, OP_Transaction, iDb, wrFlag, + pTab->pSchema->schema_cookie, + pTab->pSchema->iGeneration); + sqlite3VdbeChangeP5(v, 1); + aOp = sqlite3VdbeAddOpList(v, ArraySize(openBlob), openBlob, iLn); /* Make sure a mutex is held on the table to be accessed */ sqlite3VdbeUsesBtree(v, iDb); - /* Configure the OP_TableLock instruction */ + if( db->mallocFailed==0 ){ + assert( aOp!=0 ); + /* Configure the OP_TableLock instruction */ #ifdef SQLITE_OMIT_SHARED_CACHE - sqlite3VdbeChangeToNoop(v, 2); + aOp[0].opcode = OP_Noop; #else - sqlite3VdbeChangeP1(v, 2, iDb); - sqlite3VdbeChangeP2(v, 2, pTab->tnum); - sqlite3VdbeChangeP3(v, 2, flags); - sqlite3VdbeChangeP4(v, 2, pTab->zName, P4_TRANSIENT); + aOp[0].p1 = iDb; + aOp[0].p2 = pTab->tnum; + aOp[0].p3 = wrFlag; + sqlite3VdbeChangeP4(v, 1, pTab->zName, P4_TRANSIENT); + } + if( db->mallocFailed==0 ){ #endif - /* Remove either the OP_OpenWrite or OpenRead. Set the P2 - ** parameter of the other to pTab->tnum. */ - sqlite3VdbeChangeToNoop(v, 4 - flags); - sqlite3VdbeChangeP2(v, 3 + flags, pTab->tnum); - sqlite3VdbeChangeP3(v, 3 + flags, iDb); + /* Remove either the OP_OpenWrite or OpenRead. Set the P2 + ** parameter of the other to pTab->tnum. */ + if( wrFlag ) aOp[1].opcode = OP_OpenWrite; + aOp[1].p2 = pTab->tnum; + aOp[1].p3 = iDb; - /* Configure the number of columns. Configure the cursor to - ** think that the table has one more column than it really - ** does. An OP_Column to retrieve this imaginary column will - ** always return an SQL NULL. This is useful because it means - ** we can invoke OP_Column to fill in the vdbe cursors type - ** and offset cache without causing any IO. - */ - sqlite3VdbeChangeP4(v, 3+flags, SQLITE_INT_TO_PTR(pTab->nCol+1),P4_INT32); - sqlite3VdbeChangeP2(v, 7, pTab->nCol); - if( !db->mallocFailed ){ - pParse->nVar = 1; + /* Configure the number of columns. Configure the cursor to + ** think that the table has one more column than it really + ** does. An OP_Column to retrieve this imaginary column will + ** always return an SQL NULL. This is useful because it means + ** we can invoke OP_Column to fill in the vdbe cursors type + ** and offset cache without causing any IO. + */ + aOp[1].p4type = P4_INT32; + aOp[1].p4.i = pTab->nCol+1; + aOp[3].p2 = pTab->nCol; + + pParse->nVar = 0; pParse->nMem = 1; pParse->nTab = 1; sqlite3VdbeMakeReady(v, pParse); } } - pBlob->flags = flags; pBlob->iCol = iCol; pBlob->db = db; sqlite3BtreeLeaveAll(db); if( db->mallocFailed ){ goto blob_open_out; } - sqlite3_bind_int64(pBlob->pStmt, 1, iRow); rc = blobSeekToRow(pBlob, iRow, &zErr); } while( (++nAttempt)pStmt ) sqlite3VdbeFinalize((Vdbe *)pBlob->pStmt); sqlite3DbFree(db, pBlob); } - sqlite3Error(db, rc, (zErr ? "%s" : 0), zErr); + sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr); sqlite3DbFree(db, zErr); sqlite3ParserReset(pParse); sqlite3StackFree(db, pParse); @@ -73171,10 +85500,9 @@ static int blobReadWrite( sqlite3_mutex_enter(db->mutex); v = (Vdbe*)p->pStmt; - if( n<0 || iOffset<0 || (iOffset+n)>p->nByte ){ + if( n<0 || iOffset<0 || ((sqlite3_int64)iOffset+n)>p->nByte ){ /* Request is out of range. Return a transient error. */ rc = SQLITE_ERROR; - sqlite3Error(db, SQLITE_ERROR, 0); }else if( v==0 ){ /* If there is no statement handle, then the blob-handle has ** already been invalidated. Return SQLITE_ABORT in this case. @@ -73186,16 +85514,40 @@ static int blobReadWrite( */ assert( db == v->db ); sqlite3BtreeEnterCursor(p->pCsr); + +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + if( xCall==sqlite3BtreePutData && db->xPreUpdateCallback ){ + /* If a pre-update hook is registered and this is a write cursor, + ** invoke it here. + ** + ** TODO: The preupdate-hook is passed SQLITE_DELETE, even though this + ** operation should really be an SQLITE_UPDATE. This is probably + ** incorrect, but is convenient because at this point the new.* values + ** are not easily obtainable. And for the sessions module, an + ** SQLITE_UPDATE where the PK columns do not change is handled in the + ** same way as an SQLITE_DELETE (the SQLITE_DELETE code is actually + ** slightly more efficient). Since you cannot write to a PK column + ** using the incremental-blob API, this works. For the sessions module + ** anyhow. + */ + sqlite3_int64 iKey; + iKey = sqlite3BtreeIntegerKey(p->pCsr); + sqlite3VdbePreUpdateHook( + v, v->apCsr[0], SQLITE_DELETE, p->zDb, p->pTab, iKey, -1 + ); + } +#endif + rc = xCall(p->pCsr, iOffset+p->iOffset, n, z); sqlite3BtreeLeaveCursor(p->pCsr); if( rc==SQLITE_ABORT ){ sqlite3VdbeFinalize(v); p->pStmt = 0; }else{ - db->errCode = rc; v->rc = rc; } } + sqlite3Error(db, rc); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; @@ -73205,7 +85557,7 @@ static int blobReadWrite( ** Read data from a blob handle. */ SQLITE_API int sqlite3_blob_read(sqlite3_blob *pBlob, void *z, int n, int iOffset){ - return blobReadWrite(pBlob, z, n, iOffset, sqlite3BtreeData); + return blobReadWrite(pBlob, z, n, iOffset, sqlite3BtreePayloadChecked); } /* @@ -73254,7 +85606,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ char *zErr; rc = blobSeekToRow(p, iRow, &zErr); if( rc!=SQLITE_OK ){ - sqlite3Error(db, rc, (zErr ? "%s" : 0), zErr); + sqlite3ErrorWithMsg(db, rc, (zErr ? "%s" : 0), zErr); sqlite3DbFree(db, zErr); } assert( rc!=SQLITE_SCHEMA ); @@ -73271,7 +85623,7 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ /************** End of vdbeblob.c ********************************************/ /************** Begin file vdbesort.c ****************************************/ /* -** 2011 July 9 +** 2011-07-09 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -73282,42 +85634,205 @@ SQLITE_API int sqlite3_blob_reopen(sqlite3_blob *pBlob, sqlite3_int64 iRow){ ** ************************************************************************* ** This file contains code for the VdbeSorter object, used in concert with -** a VdbeCursor to sort large numbers of keys (as may be required, for -** example, by CREATE INDEX statements on tables too large to fit in main -** memory). +** a VdbeCursor to sort large numbers of keys for CREATE INDEX statements +** or by SELECT statements with ORDER BY clauses that cannot be satisfied +** using indexes and without LIMIT clauses. +** +** The VdbeSorter object implements a multi-threaded external merge sort +** algorithm that is efficient even if the number of elements being sorted +** exceeds the available memory. +** +** Here is the (internal, non-API) interface between this module and the +** rest of the SQLite system: +** +** sqlite3VdbeSorterInit() Create a new VdbeSorter object. +** +** sqlite3VdbeSorterWrite() Add a single new row to the VdbeSorter +** object. The row is a binary blob in the +** OP_MakeRecord format that contains both +** the ORDER BY key columns and result columns +** in the case of a SELECT w/ ORDER BY, or +** the complete record for an index entry +** in the case of a CREATE INDEX. +** +** sqlite3VdbeSorterRewind() Sort all content previously added. +** Position the read cursor on the +** first sorted element. +** +** sqlite3VdbeSorterNext() Advance the read cursor to the next sorted +** element. +** +** sqlite3VdbeSorterRowkey() Return the complete binary blob for the +** row currently under the read cursor. +** +** sqlite3VdbeSorterCompare() Compare the binary blob for the row +** currently under the read cursor against +** another binary blob X and report if +** X is strictly less than the read cursor. +** Used to enforce uniqueness in a +** CREATE UNIQUE INDEX statement. +** +** sqlite3VdbeSorterClose() Close the VdbeSorter object and reclaim +** all resources. +** +** sqlite3VdbeSorterReset() Refurbish the VdbeSorter for reuse. This +** is like Close() followed by Init() only +** much faster. +** +** The interfaces above must be called in a particular order. Write() can +** only occur in between Init()/Reset() and Rewind(). Next(), Rowkey(), and +** Compare() can only occur in between Rewind() and Close()/Reset(). i.e. +** +** Init() +** for each record: Write() +** Rewind() +** Rowkey()/Compare() +** Next() +** Close() +** +** Algorithm: +** +** Records passed to the sorter via calls to Write() are initially held +** unsorted in main memory. Assuming the amount of memory used never exceeds +** a threshold, when Rewind() is called the set of records is sorted using +** an in-memory merge sort. In this case, no temporary files are required +** and subsequent calls to Rowkey(), Next() and Compare() read records +** directly from main memory. +** +** If the amount of space used to store records in main memory exceeds the +** threshold, then the set of records currently in memory are sorted and +** written to a temporary file in "Packed Memory Array" (PMA) format. +** A PMA created at this point is known as a "level-0 PMA". Higher levels +** of PMAs may be created by merging existing PMAs together - for example +** merging two or more level-0 PMAs together creates a level-1 PMA. +** +** The threshold for the amount of main memory to use before flushing +** records to a PMA is roughly the same as the limit configured for the +** page-cache of the main database. Specifically, the threshold is set to +** the value returned by "PRAGMA main.page_size" multipled by +** that returned by "PRAGMA main.cache_size", in bytes. +** +** If the sorter is running in single-threaded mode, then all PMAs generated +** are appended to a single temporary file. Or, if the sorter is running in +** multi-threaded mode then up to (N+1) temporary files may be opened, where +** N is the configured number of worker threads. In this case, instead of +** sorting the records and writing the PMA to a temporary file itself, the +** calling thread usually launches a worker thread to do so. Except, if +** there are already N worker threads running, the main thread does the work +** itself. +** +** The sorter is running in multi-threaded mode if (a) the library was built +** with pre-processor symbol SQLITE_MAX_WORKER_THREADS set to a value greater +** than zero, and (b) worker threads have been enabled at runtime by calling +** "PRAGMA threads=N" with some value of N greater than 0. +** +** When Rewind() is called, any data remaining in memory is flushed to a +** final PMA. So at this point the data is stored in some number of sorted +** PMAs within temporary files on disk. +** +** If there are fewer than SORTER_MAX_MERGE_COUNT PMAs in total and the +** sorter is running in single-threaded mode, then these PMAs are merged +** incrementally as keys are retreived from the sorter by the VDBE. The +** MergeEngine object, described in further detail below, performs this +** merge. +** +** Or, if running in multi-threaded mode, then a background thread is +** launched to merge the existing PMAs. Once the background thread has +** merged T bytes of data into a single sorted PMA, the main thread +** begins reading keys from that PMA while the background thread proceeds +** with merging the next T bytes of data. And so on. +** +** Parameter T is set to half the value of the memory threshold used +** by Write() above to determine when to create a new PMA. +** +** If there are more than SORTER_MAX_MERGE_COUNT PMAs in total when +** Rewind() is called, then a hierarchy of incremental-merges is used. +** First, T bytes of data from the first SORTER_MAX_MERGE_COUNT PMAs on +** disk are merged together. Then T bytes of data from the second set, and +** so on, such that no operation ever merges more than SORTER_MAX_MERGE_COUNT +** PMAs at a time. This done is to improve locality. +** +** If running in multi-threaded mode and there are more than +** SORTER_MAX_MERGE_COUNT PMAs on disk when Rewind() is called, then more +** than one background thread may be created. Specifically, there may be +** one background thread for each temporary file on disk, and one background +** thread to merge the output of each of the others to a single PMA for +** the main thread to read from. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ - - -typedef struct VdbeSorterIter VdbeSorterIter; -typedef struct SorterRecord SorterRecord; -typedef struct FileWriter FileWriter; +/* +** If SQLITE_DEBUG_SORTER_THREADS is defined, this module outputs various +** messages to stderr that may be helpful in understanding the performance +** characteristics of the sorter in multi-threaded mode. +*/ +#if 0 +# define SQLITE_DEBUG_SORTER_THREADS 1 +#endif /* -** NOTES ON DATA STRUCTURE USED FOR N-WAY MERGES: +** Hard-coded maximum amount of data to accumulate in memory before flushing +** to a level 0 PMA. The purpose of this limit is to prevent various integer +** overflows. 512MiB. +*/ +#define SQLITE_MAX_PMASZ (1<<29) + +/* +** Private objects used by the sorter +*/ +typedef struct MergeEngine MergeEngine; /* Merge PMAs together */ +typedef struct PmaReader PmaReader; /* Incrementally read one PMA */ +typedef struct PmaWriter PmaWriter; /* Incrementally write one PMA */ +typedef struct SorterRecord SorterRecord; /* A record being sorted */ +typedef struct SortSubtask SortSubtask; /* A sub-task in the sort process */ +typedef struct SorterFile SorterFile; /* Temporary file object wrapper */ +typedef struct SorterList SorterList; /* In-memory list of records */ +typedef struct IncrMerger IncrMerger; /* Read & merge multiple PMAs */ + +/* +** A container for a temp file handle and the current amount of data +** stored in the file. +*/ +struct SorterFile { + sqlite3_file *pFd; /* File handle */ + i64 iEof; /* Bytes of data stored in pFd */ +}; + +/* +** An in-memory list of objects to be sorted. ** -** As keys are added to the sorter, they are written to disk in a series -** of sorted packed-memory-arrays (PMAs). The size of each PMA is roughly -** the same as the cache-size allowed for temporary databases. In order -** to allow the caller to extract keys from the sorter in sorted order, -** all PMAs currently stored on disk must be merged together. This comment -** describes the data structure used to do so. The structure supports -** merging any number of arrays in a single pass with no redundant comparison -** operations. +** If aMemory==0 then each object is allocated separately and the objects +** are connected using SorterRecord.u.pNext. If aMemory!=0 then all objects +** are stored in the aMemory[] bulk memory, one right after the other, and +** are connected using SorterRecord.u.iNext. +*/ +struct SorterList { + SorterRecord *pList; /* Linked list of records */ + u8 *aMemory; /* If non-NULL, bulk memory to hold pList */ + int szPMA; /* Size of pList as PMA in bytes */ +}; + +/* +** The MergeEngine object is used to combine two or more smaller PMAs into +** one big PMA using a merge operation. Separate PMAs all need to be +** combined into one big PMA in order to be able to step through the sorted +** records in order. ** -** The aIter[] array contains an iterator for each of the PMAs being merged. -** An aIter[] iterator either points to a valid key or else is at EOF. For -** the purposes of the paragraphs below, we assume that the array is actually -** N elements in size, where N is the smallest power of 2 greater to or equal -** to the number of iterators being merged. The extra aIter[] elements are -** treated as if they are empty (always at EOF). +** The aReadr[] array contains a PmaReader object for each of the PMAs being +** merged. An aReadr[] object either points to a valid key or else is at EOF. +** ("EOF" means "End Of File". When aReadr[] is at EOF there is no more data.) +** For the purposes of the paragraphs below, we assume that the array is +** actually N elements in size, where N is the smallest power of 2 greater +** to or equal to the number of PMAs being merged. The extra aReadr[] elements +** are treated as if they are empty (always at EOF). ** ** The aTree[] array is also N elements in size. The value of N is stored in -** the VdbeSorter.nTree variable. +** the MergeEngine.nTree variable. ** ** The final (N/2) elements of aTree[] contain the results of comparing -** pairs of iterator keys together. Element i contains the result of -** comparing aIter[2*i-N] and aIter[2*i-N+1]. Whichever key is smaller, the +** pairs of PMA keys together. Element i contains the result of +** comparing aReadr[2*i-N] and aReadr[2*i-N+1]. Whichever key is smaller, the ** aTree element is set to the index of it. ** ** For the purposes of this comparison, EOF is considered greater than any @@ -73325,34 +85840,34 @@ typedef struct FileWriter FileWriter; ** values), it doesn't matter which index is stored. ** ** The (N/4) elements of aTree[] that precede the final (N/2) described -** above contains the index of the smallest of each block of 4 iterators. -** And so on. So that aTree[1] contains the index of the iterator that +** above contains the index of the smallest of each block of 4 PmaReaders +** And so on. So that aTree[1] contains the index of the PmaReader that ** currently points to the smallest key value. aTree[0] is unused. ** ** Example: ** -** aIter[0] -> Banana -** aIter[1] -> Feijoa -** aIter[2] -> Elderberry -** aIter[3] -> Currant -** aIter[4] -> Grapefruit -** aIter[5] -> Apple -** aIter[6] -> Durian -** aIter[7] -> EOF +** aReadr[0] -> Banana +** aReadr[1] -> Feijoa +** aReadr[2] -> Elderberry +** aReadr[3] -> Currant +** aReadr[4] -> Grapefruit +** aReadr[5] -> Apple +** aReadr[6] -> Durian +** aReadr[7] -> EOF ** ** aTree[] = { X, 5 0, 5 0, 3, 5, 6 } ** ** The current element is "Apple" (the value of the key indicated by -** iterator 5). When the Next() operation is invoked, iterator 5 will +** PmaReader 5). When the Next() operation is invoked, PmaReader 5 will ** be advanced to the next key in its segment. Say the next key is ** "Eggplant": ** -** aIter[5] -> Eggplant +** aReadr[5] -> Eggplant ** -** The contents of aTree[] are updated first by comparing the new iterator -** 5 key to the current key of iterator 4 (still "Grapefruit"). The iterator +** The contents of aTree[] are updated first by comparing the new PmaReader +** 5 key to the current key of PmaReader 4 (still "Grapefruit"). The PmaReader ** 5 value is still smaller, so aTree[6] is set to 5. And so on up the tree. -** The value of iterator 6 - "Durian" - is now smaller than that of iterator +** The value of PmaReader 6 - "Durian" - is now smaller than that of PmaReader ** 5, so aTree[3] is set to 6. Key 0 is smaller than key 6 (Bananafile2. And instead of using a +** background thread to prepare data for the PmaReader, with a single +** threaded IncrMerger the allocate part of pTask->file2 is "refilled" with +** keys from pMerger by the calling thread whenever the PmaReader runs out +** of data. */ -struct VdbeSorterIter { - i64 iReadOff; /* Current read offset */ - i64 iEof; /* 1 byte past EOF for this iterator */ - int nAlloc; /* Bytes of space at aAlloc */ - int nKey; /* Number of bytes in key */ - sqlite3_file *pFile; /* File iterator is reading from */ - u8 *aAlloc; /* Allocated space */ - u8 *aKey; /* Pointer to current key */ - u8 *aBuffer; /* Current read buffer */ - int nBuffer; /* Size of read buffer in bytes */ +struct IncrMerger { + SortSubtask *pTask; /* Task that owns this merger */ + MergeEngine *pMerger; /* Merge engine thread reads data from */ + i64 iStartOff; /* Offset to start writing file at */ + int mxSz; /* Maximum bytes of data to store */ + int bEof; /* Set to true when merge is finished */ + int bUseThread; /* True to use a bg thread for this object */ + SorterFile aFile[2]; /* aFile[0] for reading, [1] for writing */ }; /* -** An instance of this structure is used to organize the stream of records -** being written to files by the merge-sort code into aligned, page-sized -** blocks. Doing all I/O in aligned page-sized blocks helps I/O to go -** faster on many operating systems. +** An instance of this object is used for writing a PMA. +** +** The PMA is written one record at a time. Each record is of an arbitrary +** size. But I/O is more efficient if it occurs in page-sized blocks where +** each block is aligned on a page boundary. This object caches writes to +** the PMA so that aligned, page-size blocks are written. */ -struct FileWriter { +struct PmaWriter { int eFWErr; /* Non-zero if in an error state */ u8 *aBuffer; /* Pointer to write buffer */ int nBuffer; /* Size of write buffer in bytes */ int iBufStart; /* First byte of buffer to write */ int iBufEnd; /* Last byte of buffer to write */ i64 iWriteOff; /* Offset of start of buffer in file */ - sqlite3_file *pFile; /* File to write to */ + sqlite3_file *pFd; /* File handle to write to */ }; /* -** A structure to store a single record. All in-memory records are connected -** together into a linked list headed at VdbeSorter.pRecord using the -** SorterRecord.pNext pointer. +** This object is the header on a single record while that record is being +** held in memory and prior to being written out as part of a PMA. +** +** How the linked list is connected depends on how memory is being managed +** by this module. If using a separate allocation for each in-memory record +** (VdbeSorter.list.aMemory==0), then the list is always connected using the +** SorterRecord.u.pNext pointers. +** +** Or, if using the single large allocation method (VdbeSorter.list.aMemory!=0), +** then while records are being accumulated the list is linked using the +** SorterRecord.u.iNext offset. This is because the aMemory[] array may +** be sqlite3Realloc()ed while records are being accumulated. Once the VM +** has finished passing records to the sorter, or when the in-memory buffer +** is full, the list is sorted. As part of the sorting process, it is +** converted to use the SorterRecord.u.pNext pointers. See function +** vdbeSorterSort() for details. */ struct SorterRecord { - void *pVal; - int nVal; - SorterRecord *pNext; + int nVal; /* Size of the record in bytes */ + union { + SorterRecord *pNext; /* Pointer to next record in list */ + int iNext; /* Offset within aMemory of next record */ + } u; + /* The data for the record immediately follows this header */ }; -/* Minimum allowable value for the VdbeSorter.nWorking variable */ -#define SORTER_MIN_WORKING 10 +/* Return a pointer to the buffer containing the record data for SorterRecord +** object p. Should be used as if: +** +** void *SRVAL(SorterRecord *p) { return (void*)&p[1]; } +*/ +#define SRVAL(p) ((void*)((SorterRecord*)(p) + 1)) -/* Maximum number of segments to merge in a single pass. */ + +/* Maximum number of PMAs that a single MergeEngine can merge */ #define SORTER_MAX_MERGE_COUNT 16 +static int vdbeIncrSwap(IncrMerger*); +static void vdbeIncrFree(IncrMerger *); + /* -** Free all memory belonging to the VdbeSorterIter object passed as the second +** Free all memory belonging to the PmaReader object passed as the ** argument. All structure fields are set to zero before returning. */ -static void vdbeSorterIterZero(sqlite3 *db, VdbeSorterIter *pIter){ - sqlite3DbFree(db, pIter->aAlloc); - sqlite3DbFree(db, pIter->aBuffer); - memset(pIter, 0, sizeof(VdbeSorterIter)); +static void vdbePmaReaderClear(PmaReader *pReadr){ + sqlite3_free(pReadr->aAlloc); + sqlite3_free(pReadr->aBuffer); + if( pReadr->aMap ) sqlite3OsUnfetch(pReadr->pFd, 0, pReadr->aMap); + vdbeIncrFree(pReadr->pIncr); + memset(pReadr, 0, sizeof(PmaReader)); } /* -** Read nByte bytes of data from the stream of data iterated by object p. +** Read the next nByte bytes of data from the PMA p. ** If successful, set *ppOut to point to a buffer containing the data ** and return SQLITE_OK. Otherwise, if an error occurs, return an SQLite ** error code. ** -** The buffer indicated by *ppOut may only be considered valid until the +** The buffer returned in *ppOut is only valid until the ** next call to this function. */ -static int vdbeSorterIterRead( - sqlite3 *db, /* Database handle (for malloc) */ - VdbeSorterIter *p, /* Iterator */ +static int vdbePmaReadBlob( + PmaReader *p, /* PmaReader from which to take the blob */ int nByte, /* Bytes of data to read */ u8 **ppOut /* OUT: Pointer to buffer containing data */ ){ int iBuf; /* Offset within buffer to read from */ int nAvail; /* Bytes of data available in buffer */ + + if( p->aMap ){ + *ppOut = &p->aMap[p->iReadOff]; + p->iReadOff += nByte; + return SQLITE_OK; + } + assert( p->aBuffer ); /* If there is no more data to be read from the buffer, read the next @@ -73471,8 +86139,8 @@ static int vdbeSorterIterRead( } assert( nRead>0 ); - /* Read data from the file. Return early if an error occurs. */ - rc = sqlite3OsRead(p->pFile, p->aBuffer, nRead, p->iReadOff); + /* Readr data from the file. Return early if an error occurs. */ + rc = sqlite3OsRead(p->pFd, p->aBuffer, nRead, p->iReadOff); assert( rc!=SQLITE_IOERR_SHORT_READ ); if( rc!=SQLITE_OK ) return rc; } @@ -73492,11 +86160,13 @@ static int vdbeSorterIterRead( /* Extend the p->aAlloc[] allocation if required. */ if( p->nAllocnAlloc*2; + u8 *aNew; + int nNew = MAX(128, p->nAlloc*2); while( nByte>nNew ) nNew = nNew*2; - p->aAlloc = sqlite3DbReallocOrFree(db, p->aAlloc, nNew); - if( !p->aAlloc ) return SQLITE_NOMEM; + aNew = sqlite3Realloc(p->aAlloc, nNew); + if( !aNew ) return SQLITE_NOMEM_BKPT; p->nAlloc = nNew; + p->aAlloc = aNew; } /* Copy as much data as is available in the buffer into the start of @@ -73508,13 +86178,13 @@ static int vdbeSorterIterRead( /* The following loop copies up to p->nBuffer bytes per iteration into ** the p->aAlloc[] buffer. */ while( nRem>0 ){ - int rc; /* vdbeSorterIterRead() return code */ + int rc; /* vdbePmaReadBlob() return code */ int nCopy; /* Number of bytes to copy */ u8 *aNext; /* Pointer to buffer to copy data from */ nCopy = nRem; if( nRem>p->nBuffer ) nCopy = p->nBuffer; - rc = vdbeSorterIterRead(db, p, nCopy, &aNext); + rc = vdbePmaReadBlob(p, nCopy, &aNext); if( rc!=SQLITE_OK ) return rc; assert( aNext!=p->aAlloc ); memcpy(&p->aAlloc[nByte - nRem], aNext, nCopy); @@ -73531,236 +86201,453 @@ static int vdbeSorterIterRead( ** Read a varint from the stream of data accessed by p. Set *pnOut to ** the value read. */ -static int vdbeSorterIterVarint(sqlite3 *db, VdbeSorterIter *p, u64 *pnOut){ +static int vdbePmaReadVarint(PmaReader *p, u64 *pnOut){ int iBuf; - iBuf = p->iReadOff % p->nBuffer; - if( iBuf && (p->nBuffer-iBuf)>=9 ){ - p->iReadOff += sqlite3GetVarint(&p->aBuffer[iBuf], pnOut); + if( p->aMap ){ + p->iReadOff += sqlite3GetVarint(&p->aMap[p->iReadOff], pnOut); }else{ - u8 aVarint[16], *a; - int i = 0, rc; - do{ - rc = vdbeSorterIterRead(db, p, 1, &a); - if( rc ) return rc; - aVarint[(i++)&0xf] = a[0]; - }while( (a[0]&0x80)!=0 ); - sqlite3GetVarint(aVarint, pnOut); + iBuf = p->iReadOff % p->nBuffer; + if( iBuf && (p->nBuffer-iBuf)>=9 ){ + p->iReadOff += sqlite3GetVarint(&p->aBuffer[iBuf], pnOut); + }else{ + u8 aVarint[16], *a; + int i = 0, rc; + do{ + rc = vdbePmaReadBlob(p, 1, &a); + if( rc ) return rc; + aVarint[(i++)&0xf] = a[0]; + }while( (a[0]&0x80)!=0 ); + sqlite3GetVarint(aVarint, pnOut); + } } return SQLITE_OK; } - /* -** Advance iterator pIter to the next key in its PMA. Return SQLITE_OK if -** no error occurs, or an SQLite error code if one does. +** Attempt to memory map file pFile. If successful, set *pp to point to the +** new mapping and return SQLITE_OK. If the mapping is not attempted +** (because the file is too large or the VFS layer is configured not to use +** mmap), return SQLITE_OK and set *pp to NULL. +** +** Or, if an error occurs, return an SQLite error code. The final value of +** *pp is undefined in this case. */ -static int vdbeSorterIterNext( - sqlite3 *db, /* Database handle (for sqlite3DbMalloc() ) */ - VdbeSorterIter *pIter /* Iterator to advance */ -){ - int rc; /* Return Code */ - u64 nRec = 0; /* Size of record in bytes */ - - if( pIter->iReadOff>=pIter->iEof ){ - /* This is an EOF condition */ - vdbeSorterIterZero(db, pIter); - return SQLITE_OK; +static int vdbeSorterMapFile(SortSubtask *pTask, SorterFile *pFile, u8 **pp){ + int rc = SQLITE_OK; + if( pFile->iEof<=(i64)(pTask->pSorter->db->nMaxSorterMmap) ){ + sqlite3_file *pFd = pFile->pFd; + if( pFd->pMethods->iVersion>=3 ){ + rc = sqlite3OsFetch(pFd, 0, (int)pFile->iEof, (void**)pp); + testcase( rc!=SQLITE_OK ); + } } - - rc = vdbeSorterIterVarint(db, pIter, &nRec); - if( rc==SQLITE_OK ){ - pIter->nKey = (int)nRec; - rc = vdbeSorterIterRead(db, pIter, (int)nRec, &pIter->aKey); - } - return rc; } /* -** Initialize iterator pIter to scan through the PMA stored in file pFile -** starting at offset iStart and ending at offset iEof-1. This function -** leaves the iterator pointing to the first key in the PMA (or EOF if the -** PMA is empty). +** Attach PmaReader pReadr to file pFile (if it is not already attached to +** that file) and seek it to offset iOff within the file. Return SQLITE_OK +** if successful, or an SQLite error code if an error occurs. */ -static int vdbeSorterIterInit( - sqlite3 *db, /* Database handle */ - const VdbeSorter *pSorter, /* Sorter object */ - i64 iStart, /* Start offset in pFile */ - VdbeSorterIter *pIter, /* Iterator to populate */ - i64 *pnByte /* IN/OUT: Increment this value by PMA size */ +static int vdbePmaReaderSeek( + SortSubtask *pTask, /* Task context */ + PmaReader *pReadr, /* Reader whose cursor is to be moved */ + SorterFile *pFile, /* Sorter file to read from */ + i64 iOff /* Offset in pFile */ ){ int rc = SQLITE_OK; - int nBuf; - nBuf = sqlite3BtreeGetPageSize(db->aDb[0].pBt); + assert( pReadr->pIncr==0 || pReadr->pIncr->bEof==0 ); - assert( pSorter->iWriteOff>iStart ); - assert( pIter->aAlloc==0 ); - assert( pIter->aBuffer==0 ); - pIter->pFile = pSorter->pTemp1; - pIter->iReadOff = iStart; - pIter->nAlloc = 128; - pIter->aAlloc = (u8 *)sqlite3DbMallocRaw(db, pIter->nAlloc); - pIter->nBuffer = nBuf; - pIter->aBuffer = (u8 *)sqlite3DbMallocRaw(db, nBuf); + if( sqlite3FaultSim(201) ) return SQLITE_IOERR_READ; + if( pReadr->aMap ){ + sqlite3OsUnfetch(pReadr->pFd, 0, pReadr->aMap); + pReadr->aMap = 0; + } + pReadr->iReadOff = iOff; + pReadr->iEof = pFile->iEof; + pReadr->pFd = pFile->pFd; - if( !pIter->aBuffer ){ - rc = SQLITE_NOMEM; - }else{ - int iBuf; - - iBuf = iStart % nBuf; - if( iBuf ){ - int nRead = nBuf - iBuf; - if( (iStart + nRead) > pSorter->iWriteOff ){ - nRead = (int)(pSorter->iWriteOff - iStart); + rc = vdbeSorterMapFile(pTask, pFile, &pReadr->aMap); + if( rc==SQLITE_OK && pReadr->aMap==0 ){ + int pgsz = pTask->pSorter->pgsz; + int iBuf = pReadr->iReadOff % pgsz; + if( pReadr->aBuffer==0 ){ + pReadr->aBuffer = (u8*)sqlite3Malloc(pgsz); + if( pReadr->aBuffer==0 ) rc = SQLITE_NOMEM_BKPT; + pReadr->nBuffer = pgsz; + } + if( rc==SQLITE_OK && iBuf ){ + int nRead = pgsz - iBuf; + if( (pReadr->iReadOff + nRead) > pReadr->iEof ){ + nRead = (int)(pReadr->iEof - pReadr->iReadOff); } rc = sqlite3OsRead( - pSorter->pTemp1, &pIter->aBuffer[iBuf], nRead, iStart + pReadr->pFd, &pReadr->aBuffer[iBuf], nRead, pReadr->iReadOff ); - assert( rc!=SQLITE_IOERR_SHORT_READ ); + testcase( rc!=SQLITE_OK ); + } + } + + return rc; +} + +/* +** Advance PmaReader pReadr to the next key in its PMA. Return SQLITE_OK if +** no error occurs, or an SQLite error code if one does. +*/ +static int vdbePmaReaderNext(PmaReader *pReadr){ + int rc = SQLITE_OK; /* Return Code */ + u64 nRec = 0; /* Size of record in bytes */ + + + if( pReadr->iReadOff>=pReadr->iEof ){ + IncrMerger *pIncr = pReadr->pIncr; + int bEof = 1; + if( pIncr ){ + rc = vdbeIncrSwap(pIncr); + if( rc==SQLITE_OK && pIncr->bEof==0 ){ + rc = vdbePmaReaderSeek( + pIncr->pTask, pReadr, &pIncr->aFile[0], pIncr->iStartOff + ); + bEof = 0; + } } - if( rc==SQLITE_OK ){ - u64 nByte; /* Size of PMA in bytes */ - pIter->iEof = pSorter->iWriteOff; - rc = vdbeSorterIterVarint(db, pIter, &nByte); - pIter->iEof = pIter->iReadOff + nByte; - *pnByte += nByte; + if( bEof ){ + /* This is an EOF condition */ + vdbePmaReaderClear(pReadr); + testcase( rc!=SQLITE_OK ); + return rc; } } if( rc==SQLITE_OK ){ - rc = vdbeSorterIterNext(db, pIter); + rc = vdbePmaReadVarint(pReadr, &nRec); + } + if( rc==SQLITE_OK ){ + pReadr->nKey = (int)nRec; + rc = vdbePmaReadBlob(pReadr, (int)nRec, &pReadr->aKey); + testcase( rc!=SQLITE_OK ); + } + + return rc; +} + +/* +** Initialize PmaReader pReadr to scan through the PMA stored in file pFile +** starting at offset iStart and ending at offset iEof-1. This function +** leaves the PmaReader pointing to the first key in the PMA (or EOF if the +** PMA is empty). +** +** If the pnByte parameter is NULL, then it is assumed that the file +** contains a single PMA, and that that PMA omits the initial length varint. +*/ +static int vdbePmaReaderInit( + SortSubtask *pTask, /* Task context */ + SorterFile *pFile, /* Sorter file to read from */ + i64 iStart, /* Start offset in pFile */ + PmaReader *pReadr, /* PmaReader to populate */ + i64 *pnByte /* IN/OUT: Increment this value by PMA size */ +){ + int rc; + + assert( pFile->iEof>iStart ); + assert( pReadr->aAlloc==0 && pReadr->nAlloc==0 ); + assert( pReadr->aBuffer==0 ); + assert( pReadr->aMap==0 ); + + rc = vdbePmaReaderSeek(pTask, pReadr, pFile, iStart); + if( rc==SQLITE_OK ){ + u64 nByte = 0; /* Size of PMA in bytes */ + rc = vdbePmaReadVarint(pReadr, &nByte); + pReadr->iEof = pReadr->iReadOff + nByte; + *pnByte += nByte; + } + + if( rc==SQLITE_OK ){ + rc = vdbePmaReaderNext(pReadr); } return rc; } +/* +** A version of vdbeSorterCompare() that assumes that it has already been +** determined that the first field of key1 is equal to the first field of +** key2. +*/ +static int vdbeSorterCompareTail( + SortSubtask *pTask, /* Subtask context (for pKeyInfo) */ + int *pbKey2Cached, /* True if pTask->pUnpacked is pKey2 */ + const void *pKey1, int nKey1, /* Left side of comparison */ + const void *pKey2, int nKey2 /* Right side of comparison */ +){ + UnpackedRecord *r2 = pTask->pUnpacked; + if( *pbKey2Cached==0 ){ + sqlite3VdbeRecordUnpack(pTask->pSorter->pKeyInfo, nKey2, pKey2, r2); + *pbKey2Cached = 1; + } + return sqlite3VdbeRecordCompareWithSkip(nKey1, pKey1, r2, 1); +} /* ** Compare key1 (buffer pKey1, size nKey1 bytes) with key2 (buffer pKey2, -** size nKey2 bytes). Argument pKeyInfo supplies the collation functions -** used by the comparison. If an error occurs, return an SQLite error code. -** Otherwise, return SQLITE_OK and set *pRes to a negative, zero or positive -** value, depending on whether key1 is smaller, equal to or larger than key2. +** size nKey2 bytes). Use (pTask->pKeyInfo) for the collation sequences +** used by the comparison. Return the result of the comparison. ** -** If the bOmitRowid argument is non-zero, assume both keys end in a rowid -** field. For the purposes of the comparison, ignore it. Also, if bOmitRowid -** is true and key1 contains even a single NULL value, it is considered to -** be less than key2. Even if key2 also contains NULL values. +** If IN/OUT parameter *pbKey2Cached is true when this function is called, +** it is assumed that (pTask->pUnpacked) contains the unpacked version +** of key2. If it is false, (pTask->pUnpacked) is populated with the unpacked +** version of key2 and *pbKey2Cached set to true before returning. ** -** If pKey2 is passed a NULL pointer, then it is assumed that the pCsr->aSpace -** has been allocated and contains an unpacked record that is used as key2. +** If an OOM error is encountered, (pTask->pUnpacked->error_rc) is set +** to SQLITE_NOMEM. */ -static void vdbeSorterCompare( - const VdbeCursor *pCsr, /* Cursor object (for pKeyInfo) */ - int nIgnore, /* Ignore the last nIgnore fields */ +static int vdbeSorterCompare( + SortSubtask *pTask, /* Subtask context (for pKeyInfo) */ + int *pbKey2Cached, /* True if pTask->pUnpacked is pKey2 */ const void *pKey1, int nKey1, /* Left side of comparison */ - const void *pKey2, int nKey2, /* Right side of comparison */ - int *pRes /* OUT: Result of comparison */ + const void *pKey2, int nKey2 /* Right side of comparison */ ){ - KeyInfo *pKeyInfo = pCsr->pKeyInfo; - VdbeSorter *pSorter = pCsr->pSorter; - UnpackedRecord *r2 = pSorter->pUnpacked; - int i; - - if( pKey2 ){ - sqlite3VdbeRecordUnpack(pKeyInfo, nKey2, pKey2, r2); + UnpackedRecord *r2 = pTask->pUnpacked; + if( !*pbKey2Cached ){ + sqlite3VdbeRecordUnpack(pTask->pSorter->pKeyInfo, nKey2, pKey2, r2); + *pbKey2Cached = 1; } - - if( nIgnore ){ - r2->nField = pKeyInfo->nField - nIgnore; - assert( r2->nField>0 ); - for(i=0; inField; i++){ - if( r2->aMem[i].flags & MEM_Null ){ - *pRes = -1; - return; - } - } - r2->flags |= UNPACKED_PREFIX_MATCH; - } - - *pRes = sqlite3VdbeRecordCompare(nKey1, pKey1, r2); + return sqlite3VdbeRecordCompare(nKey1, pKey1, r2); } /* -** This function is called to compare two iterator keys when merging -** multiple b-tree segments. Parameter iOut is the index of the aTree[] -** value to recalculate. +** A specially optimized version of vdbeSorterCompare() that assumes that +** the first field of each key is a TEXT value and that the collation +** sequence to compare them with is BINARY. */ -static int vdbeSorterDoCompare(const VdbeCursor *pCsr, int iOut){ - VdbeSorter *pSorter = pCsr->pSorter; - int i1; - int i2; - int iRes; - VdbeSorterIter *p1; - VdbeSorterIter *p2; +static int vdbeSorterCompareText( + SortSubtask *pTask, /* Subtask context (for pKeyInfo) */ + int *pbKey2Cached, /* True if pTask->pUnpacked is pKey2 */ + const void *pKey1, int nKey1, /* Left side of comparison */ + const void *pKey2, int nKey2 /* Right side of comparison */ +){ + const u8 * const p1 = (const u8 * const)pKey1; + const u8 * const p2 = (const u8 * const)pKey2; + const u8 * const v1 = &p1[ p1[0] ]; /* Pointer to value 1 */ + const u8 * const v2 = &p2[ p2[0] ]; /* Pointer to value 2 */ - assert( iOutnTree && iOut>0 ); + int n1; + int n2; + int res; - if( iOut>=(pSorter->nTree/2) ){ - i1 = (iOut - pSorter->nTree/2) * 2; - i2 = i1 + 1; - }else{ - i1 = pSorter->aTree[iOut*2]; - i2 = pSorter->aTree[iOut*2+1]; + getVarint32(&p1[1], n1); n1 = (n1 - 13) / 2; + getVarint32(&p2[1], n2); n2 = (n2 - 13) / 2; + res = memcmp(v1, v2, MIN(n1, n2)); + if( res==0 ){ + res = n1 - n2; } - p1 = &pSorter->aIter[i1]; - p2 = &pSorter->aIter[i2]; - - if( p1->pFile==0 ){ - iRes = i2; - }else if( p2->pFile==0 ){ - iRes = i1; + if( res==0 ){ + if( pTask->pSorter->pKeyInfo->nField>1 ){ + res = vdbeSorterCompareTail( + pTask, pbKey2Cached, pKey1, nKey1, pKey2, nKey2 + ); + } }else{ - int res; - assert( pCsr->pSorter->pUnpacked!=0 ); /* allocated in vdbeSorterMerge() */ - vdbeSorterCompare( - pCsr, 0, p1->aKey, p1->nKey, p2->aKey, p2->nKey, &res - ); - if( res<=0 ){ - iRes = i1; - }else{ - iRes = i2; + if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){ + res = res * -1; } } - pSorter->aTree[iOut] = iRes; - return SQLITE_OK; + return res; +} + +/* +** A specially optimized version of vdbeSorterCompare() that assumes that +** the first field of each key is an INTEGER value. +*/ +static int vdbeSorterCompareInt( + SortSubtask *pTask, /* Subtask context (for pKeyInfo) */ + int *pbKey2Cached, /* True if pTask->pUnpacked is pKey2 */ + const void *pKey1, int nKey1, /* Left side of comparison */ + const void *pKey2, int nKey2 /* Right side of comparison */ +){ + const u8 * const p1 = (const u8 * const)pKey1; + const u8 * const p2 = (const u8 * const)pKey2; + const int s1 = p1[1]; /* Left hand serial type */ + const int s2 = p2[1]; /* Right hand serial type */ + const u8 * const v1 = &p1[ p1[0] ]; /* Pointer to value 1 */ + const u8 * const v2 = &p2[ p2[0] ]; /* Pointer to value 2 */ + int res; /* Return value */ + + assert( (s1>0 && s1<7) || s1==8 || s1==9 ); + assert( (s2>0 && s2<7) || s2==8 || s2==9 ); + + if( s1>7 && s2>7 ){ + res = s1 - s2; + }else{ + if( s1==s2 ){ + if( (*v1 ^ *v2) & 0x80 ){ + /* The two values have different signs */ + res = (*v1 & 0x80) ? -1 : +1; + }else{ + /* The two values have the same sign. Compare using memcmp(). */ + static const u8 aLen[] = {0, 1, 2, 3, 4, 6, 8 }; + int i; + res = 0; + for(i=0; i7 ){ + res = +1; + }else if( s1>7 ){ + res = -1; + }else{ + res = s1 - s2; + } + assert( res!=0 ); + + if( res>0 ){ + if( *v1 & 0x80 ) res = -1; + }else{ + if( *v2 & 0x80 ) res = +1; + } + } + } + + if( res==0 ){ + if( pTask->pSorter->pKeyInfo->nField>1 ){ + res = vdbeSorterCompareTail( + pTask, pbKey2Cached, pKey1, nKey1, pKey2, nKey2 + ); + } + }else if( pTask->pSorter->pKeyInfo->aSortOrder[0] ){ + res = res * -1; + } + + return res; } /* ** Initialize the temporary index cursor just opened as a sorter cursor. +** +** Usually, the sorter module uses the value of (pCsr->pKeyInfo->nField) +** to determine the number of fields that should be compared from the +** records being sorted. However, if the value passed as argument nField +** is non-zero and the sorter is able to guarantee a stable sort, nField +** is used instead. This is used when sorting records for a CREATE INDEX +** statement. In this case, keys are always delivered to the sorter in +** order of the primary key, which happens to be make up the final part +** of the records being sorted. So if the sort is stable, there is never +** any reason to compare PK fields and they can be ignored for a small +** performance boost. +** +** The sorter can guarantee a stable sort when running in single-threaded +** mode, but not in multi-threaded mode. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. */ -SQLITE_PRIVATE int sqlite3VdbeSorterInit(sqlite3 *db, VdbeCursor *pCsr){ +SQLITE_PRIVATE int sqlite3VdbeSorterInit( + sqlite3 *db, /* Database connection (for malloc()) */ + int nField, /* Number of key fields in each record */ + VdbeCursor *pCsr /* Cursor that holds the new sorter */ +){ int pgsz; /* Page size of main database */ - int mxCache; /* Cache size */ + int i; /* Used to iterate through aTask[] */ VdbeSorter *pSorter; /* The new sorter */ - char *d; /* Dummy */ + KeyInfo *pKeyInfo; /* Copy of pCsr->pKeyInfo with db==0 */ + int szKeyInfo; /* Size of pCsr->pKeyInfo in bytes */ + int sz; /* Size of pSorter in bytes */ + int rc = SQLITE_OK; +#if SQLITE_MAX_WORKER_THREADS==0 +# define nWorker 0 +#else + int nWorker; +#endif - assert( pCsr->pKeyInfo && pCsr->pBt==0 ); - pCsr->pSorter = pSorter = sqlite3DbMallocZero(db, sizeof(VdbeSorter)); + /* Initialize the upper limit on the number of worker threads */ +#if SQLITE_MAX_WORKER_THREADS>0 + if( sqlite3TempInMemory(db) || sqlite3GlobalConfig.bCoreMutex==0 ){ + nWorker = 0; + }else{ + nWorker = db->aLimit[SQLITE_LIMIT_WORKER_THREADS]; + } +#endif + + /* Do not allow the total number of threads (main thread + all workers) + ** to exceed the maximum merge count */ +#if SQLITE_MAX_WORKER_THREADS>=SORTER_MAX_MERGE_COUNT + if( nWorker>=SORTER_MAX_MERGE_COUNT ){ + nWorker = SORTER_MAX_MERGE_COUNT-1; + } +#endif + + assert( pCsr->pKeyInfo && pCsr->pBtx==0 ); + assert( pCsr->eCurType==CURTYPE_SORTER ); + szKeyInfo = sizeof(KeyInfo) + (pCsr->pKeyInfo->nField-1)*sizeof(CollSeq*); + sz = sizeof(VdbeSorter) + nWorker * sizeof(SortSubtask); + + pSorter = (VdbeSorter*)sqlite3DbMallocZero(db, sz + szKeyInfo); + pCsr->uc.pSorter = pSorter; if( pSorter==0 ){ - return SQLITE_NOMEM; - } - - pSorter->pUnpacked = sqlite3VdbeAllocUnpackedRecord(pCsr->pKeyInfo, 0, 0, &d); - if( pSorter->pUnpacked==0 ) return SQLITE_NOMEM; - assert( pSorter->pUnpacked==(UnpackedRecord *)d ); + rc = SQLITE_NOMEM_BKPT; + }else{ + pSorter->pKeyInfo = pKeyInfo = (KeyInfo*)((u8*)pSorter + sz); + memcpy(pKeyInfo, pCsr->pKeyInfo, szKeyInfo); + pKeyInfo->db = 0; + if( nField && nWorker==0 ){ + pKeyInfo->nXField += (pKeyInfo->nField - nField); + pKeyInfo->nField = nField; + } + pSorter->pgsz = pgsz = sqlite3BtreeGetPageSize(db->aDb[0].pBt); + pSorter->nTask = nWorker + 1; + pSorter->iPrev = (u8)(nWorker - 1); + pSorter->bUseThreads = (pSorter->nTask>1); + pSorter->db = db; + for(i=0; inTask; i++){ + SortSubtask *pTask = &pSorter->aTask[i]; + pTask->pSorter = pSorter; + } - if( !sqlite3TempInMemory(db) ){ - pgsz = sqlite3BtreeGetPageSize(db->aDb[0].pBt); - pSorter->mnPmaSize = SORTER_MIN_WORKING * pgsz; - mxCache = db->aDb[0].pSchema->cache_size; - if( mxCachemxPmaSize = mxCache * pgsz; + if( !sqlite3TempInMemory(db) ){ + i64 mxCache; /* Cache size in bytes*/ + u32 szPma = sqlite3GlobalConfig.szPma; + pSorter->mnPmaSize = szPma * pgsz; + + mxCache = db->aDb[0].pSchema->cache_size; + if( mxCache<0 ){ + /* A negative cache-size value C indicates that the cache is abs(C) + ** KiB in size. */ + mxCache = mxCache * -1024; + }else{ + mxCache = mxCache * pgsz; + } + mxCache = MIN(mxCache, SQLITE_MAX_PMASZ); + pSorter->mxPmaSize = MAX(pSorter->mnPmaSize, (int)mxCache); + + /* EVIDENCE-OF: R-26747-61719 When the application provides any amount of + ** scratch memory using SQLITE_CONFIG_SCRATCH, SQLite avoids unnecessary + ** large heap allocations. + */ + if( sqlite3GlobalConfig.pScratch==0 ){ + assert( pSorter->iMemory==0 ); + pSorter->nMemory = pgsz; + pSorter->list.aMemory = (u8*)sqlite3Malloc(pgsz); + if( !pSorter->list.aMemory ) rc = SQLITE_NOMEM_BKPT; + } + } + + if( (pKeyInfo->nField+pKeyInfo->nXField)<13 + && (pKeyInfo->aColl[0]==0 || pKeyInfo->aColl[0]==db->pDfltColl) + ){ + pSorter->typeMask = SORTER_TYPE_INTEGER | SORTER_TYPE_TEXT; + } } - return SQLITE_OK; + return rc; } +#undef nWorker /* Defined at the top of this function */ /* ** Free the list of sorted records starting at pRecord. @@ -73769,104 +86656,402 @@ static void vdbeSorterRecordFree(sqlite3 *db, SorterRecord *pRecord){ SorterRecord *p; SorterRecord *pNext; for(p=pRecord; p; p=pNext){ - pNext = p->pNext; + pNext = p->u.pNext; sqlite3DbFree(db, p); } } +/* +** Free all resources owned by the object indicated by argument pTask. All +** fields of *pTask are zeroed before returning. +*/ +static void vdbeSortSubtaskCleanup(sqlite3 *db, SortSubtask *pTask){ + sqlite3DbFree(db, pTask->pUnpacked); +#if SQLITE_MAX_WORKER_THREADS>0 + /* pTask->list.aMemory can only be non-zero if it was handed memory + ** from the main thread. That only occurs SQLITE_MAX_WORKER_THREADS>0 */ + if( pTask->list.aMemory ){ + sqlite3_free(pTask->list.aMemory); + }else +#endif + { + assert( pTask->list.aMemory==0 ); + vdbeSorterRecordFree(0, pTask->list.pList); + } + if( pTask->file.pFd ){ + sqlite3OsCloseFree(pTask->file.pFd); + } + if( pTask->file2.pFd ){ + sqlite3OsCloseFree(pTask->file2.pFd); + } + memset(pTask, 0, sizeof(SortSubtask)); +} + +#ifdef SQLITE_DEBUG_SORTER_THREADS +static void vdbeSorterWorkDebug(SortSubtask *pTask, const char *zEvent){ + i64 t; + int iTask = (pTask - pTask->pSorter->aTask); + sqlite3OsCurrentTimeInt64(pTask->pSorter->db->pVfs, &t); + fprintf(stderr, "%lld:%d %s\n", t, iTask, zEvent); +} +static void vdbeSorterRewindDebug(const char *zEvent){ + i64 t; + sqlite3OsCurrentTimeInt64(sqlite3_vfs_find(0), &t); + fprintf(stderr, "%lld:X %s\n", t, zEvent); +} +static void vdbeSorterPopulateDebug( + SortSubtask *pTask, + const char *zEvent +){ + i64 t; + int iTask = (pTask - pTask->pSorter->aTask); + sqlite3OsCurrentTimeInt64(pTask->pSorter->db->pVfs, &t); + fprintf(stderr, "%lld:bg%d %s\n", t, iTask, zEvent); +} +static void vdbeSorterBlockDebug( + SortSubtask *pTask, + int bBlocked, + const char *zEvent +){ + if( bBlocked ){ + i64 t; + sqlite3OsCurrentTimeInt64(pTask->pSorter->db->pVfs, &t); + fprintf(stderr, "%lld:main %s\n", t, zEvent); + } +} +#else +# define vdbeSorterWorkDebug(x,y) +# define vdbeSorterRewindDebug(y) +# define vdbeSorterPopulateDebug(x,y) +# define vdbeSorterBlockDebug(x,y,z) +#endif + +#if SQLITE_MAX_WORKER_THREADS>0 +/* +** Join thread pTask->thread. +*/ +static int vdbeSorterJoinThread(SortSubtask *pTask){ + int rc = SQLITE_OK; + if( pTask->pThread ){ +#ifdef SQLITE_DEBUG_SORTER_THREADS + int bDone = pTask->bDone; +#endif + void *pRet = SQLITE_INT_TO_PTR(SQLITE_ERROR); + vdbeSorterBlockDebug(pTask, !bDone, "enter"); + (void)sqlite3ThreadJoin(pTask->pThread, &pRet); + vdbeSorterBlockDebug(pTask, !bDone, "exit"); + rc = SQLITE_PTR_TO_INT(pRet); + assert( pTask->bDone==1 ); + pTask->bDone = 0; + pTask->pThread = 0; + } + return rc; +} + +/* +** Launch a background thread to run xTask(pIn). +*/ +static int vdbeSorterCreateThread( + SortSubtask *pTask, /* Thread will use this task object */ + void *(*xTask)(void*), /* Routine to run in a separate thread */ + void *pIn /* Argument passed into xTask() */ +){ + assert( pTask->pThread==0 && pTask->bDone==0 ); + return sqlite3ThreadCreate(&pTask->pThread, xTask, pIn); +} + +/* +** Join all outstanding threads launched by SorterWrite() to create +** level-0 PMAs. +*/ +static int vdbeSorterJoinAll(VdbeSorter *pSorter, int rcin){ + int rc = rcin; + int i; + + /* This function is always called by the main user thread. + ** + ** If this function is being called after SorterRewind() has been called, + ** it is possible that thread pSorter->aTask[pSorter->nTask-1].pThread + ** is currently attempt to join one of the other threads. To avoid a race + ** condition where this thread also attempts to join the same object, join + ** thread pSorter->aTask[pSorter->nTask-1].pThread first. */ + for(i=pSorter->nTask-1; i>=0; i--){ + SortSubtask *pTask = &pSorter->aTask[i]; + int rc2 = vdbeSorterJoinThread(pTask); + if( rc==SQLITE_OK ) rc = rc2; + } + return rc; +} +#else +# define vdbeSorterJoinAll(x,rcin) (rcin) +# define vdbeSorterJoinThread(pTask) SQLITE_OK +#endif + +/* +** Allocate a new MergeEngine object capable of handling up to +** nReader PmaReader inputs. +** +** nReader is automatically rounded up to the next power of two. +** nReader may not exceed SORTER_MAX_MERGE_COUNT even after rounding up. +*/ +static MergeEngine *vdbeMergeEngineNew(int nReader){ + int N = 2; /* Smallest power of two >= nReader */ + int nByte; /* Total bytes of space to allocate */ + MergeEngine *pNew; /* Pointer to allocated object to return */ + + assert( nReader<=SORTER_MAX_MERGE_COUNT ); + + while( NnTree = N; + pNew->pTask = 0; + pNew->aReadr = (PmaReader*)&pNew[1]; + pNew->aTree = (int*)&pNew->aReadr[N]; + } + return pNew; +} + +/* +** Free the MergeEngine object passed as the only argument. +*/ +static void vdbeMergeEngineFree(MergeEngine *pMerger){ + int i; + if( pMerger ){ + for(i=0; inTree; i++){ + vdbePmaReaderClear(&pMerger->aReadr[i]); + } + } + sqlite3_free(pMerger); +} + +/* +** Free all resources associated with the IncrMerger object indicated by +** the first argument. +*/ +static void vdbeIncrFree(IncrMerger *pIncr){ + if( pIncr ){ +#if SQLITE_MAX_WORKER_THREADS>0 + if( pIncr->bUseThread ){ + vdbeSorterJoinThread(pIncr->pTask); + if( pIncr->aFile[0].pFd ) sqlite3OsCloseFree(pIncr->aFile[0].pFd); + if( pIncr->aFile[1].pFd ) sqlite3OsCloseFree(pIncr->aFile[1].pFd); + } +#endif + vdbeMergeEngineFree(pIncr->pMerger); + sqlite3_free(pIncr); + } +} + +/* +** Reset a sorting cursor back to its original empty state. +*/ +SQLITE_PRIVATE void sqlite3VdbeSorterReset(sqlite3 *db, VdbeSorter *pSorter){ + int i; + (void)vdbeSorterJoinAll(pSorter, SQLITE_OK); + assert( pSorter->bUseThreads || pSorter->pReader==0 ); +#if SQLITE_MAX_WORKER_THREADS>0 + if( pSorter->pReader ){ + vdbePmaReaderClear(pSorter->pReader); + sqlite3DbFree(db, pSorter->pReader); + pSorter->pReader = 0; + } +#endif + vdbeMergeEngineFree(pSorter->pMerger); + pSorter->pMerger = 0; + for(i=0; inTask; i++){ + SortSubtask *pTask = &pSorter->aTask[i]; + vdbeSortSubtaskCleanup(db, pTask); + pTask->pSorter = pSorter; + } + if( pSorter->list.aMemory==0 ){ + vdbeSorterRecordFree(0, pSorter->list.pList); + } + pSorter->list.pList = 0; + pSorter->list.szPMA = 0; + pSorter->bUsePMA = 0; + pSorter->iMemory = 0; + pSorter->mxKeysize = 0; + sqlite3DbFree(db, pSorter->pUnpacked); + pSorter->pUnpacked = 0; +} + /* ** Free any cursor components allocated by sqlite3VdbeSorterXXX routines. */ SQLITE_PRIVATE void sqlite3VdbeSorterClose(sqlite3 *db, VdbeCursor *pCsr){ - VdbeSorter *pSorter = pCsr->pSorter; + VdbeSorter *pSorter; + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; if( pSorter ){ - if( pSorter->aIter ){ - int i; - for(i=0; inTree; i++){ - vdbeSorterIterZero(db, &pSorter->aIter[i]); - } - sqlite3DbFree(db, pSorter->aIter); - } - if( pSorter->pTemp1 ){ - sqlite3OsCloseFree(pSorter->pTemp1); - } - vdbeSorterRecordFree(db, pSorter->pRecord); - sqlite3DbFree(db, pSorter->pUnpacked); + sqlite3VdbeSorterReset(db, pSorter); + sqlite3_free(pSorter->list.aMemory); sqlite3DbFree(db, pSorter); - pCsr->pSorter = 0; + pCsr->uc.pSorter = 0; } } +#if SQLITE_MAX_MMAP_SIZE>0 +/* +** The first argument is a file-handle open on a temporary file. The file +** is guaranteed to be nByte bytes or smaller in size. This function +** attempts to extend the file to nByte bytes in size and to ensure that +** the VFS has memory mapped it. +** +** Whether or not the file does end up memory mapped of course depends on +** the specific VFS implementation. +*/ +static void vdbeSorterExtendFile(sqlite3 *db, sqlite3_file *pFd, i64 nByte){ + if( nByte<=(i64)(db->nMaxSorterMmap) && pFd->pMethods->iVersion>=3 ){ + void *p = 0; + int chunksize = 4*1024; + sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_CHUNK_SIZE, &chunksize); + sqlite3OsFileControlHint(pFd, SQLITE_FCNTL_SIZE_HINT, &nByte); + sqlite3OsFetch(pFd, 0, (int)nByte, &p); + sqlite3OsUnfetch(pFd, 0, p); + } +} +#else +# define vdbeSorterExtendFile(x,y,z) +#endif + /* ** Allocate space for a file-handle and open a temporary file. If successful, -** set *ppFile to point to the malloc'd file-handle and return SQLITE_OK. -** Otherwise, set *ppFile to 0 and return an SQLite error code. +** set *ppFd to point to the malloc'd file-handle and return SQLITE_OK. +** Otherwise, set *ppFd to 0 and return an SQLite error code. */ -static int vdbeSorterOpenTempFile(sqlite3 *db, sqlite3_file **ppFile){ - int dummy; - return sqlite3OsOpenMalloc(db->pVfs, 0, ppFile, +static int vdbeSorterOpenTempFile( + sqlite3 *db, /* Database handle doing sort */ + i64 nExtend, /* Attempt to extend file to this size */ + sqlite3_file **ppFd +){ + int rc; + if( sqlite3FaultSim(202) ) return SQLITE_IOERR_ACCESS; + rc = sqlite3OsOpenMalloc(db->pVfs, 0, ppFd, SQLITE_OPEN_TEMP_JOURNAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | - SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE, &dummy + SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE, &rc ); + if( rc==SQLITE_OK ){ + i64 max = SQLITE_MAX_MMAP_SIZE; + sqlite3OsFileControlHint(*ppFd, SQLITE_FCNTL_MMAP_SIZE, (void*)&max); + if( nExtend>0 ){ + vdbeSorterExtendFile(db, *ppFd, nExtend); + } + } + return rc; } +/* +** If it has not already been allocated, allocate the UnpackedRecord +** structure at pTask->pUnpacked. Return SQLITE_OK if successful (or +** if no allocation was required), or SQLITE_NOMEM otherwise. +*/ +static int vdbeSortAllocUnpacked(SortSubtask *pTask){ + if( pTask->pUnpacked==0 ){ + pTask->pUnpacked = sqlite3VdbeAllocUnpackedRecord(pTask->pSorter->pKeyInfo); + if( pTask->pUnpacked==0 ) return SQLITE_NOMEM_BKPT; + pTask->pUnpacked->nField = pTask->pSorter->pKeyInfo->nField; + pTask->pUnpacked->errCode = 0; + } + return SQLITE_OK; +} + + /* ** Merge the two sorted lists p1 and p2 into a single list. -** Set *ppOut to the head of the new list. */ -static void vdbeSorterMerge( - const VdbeCursor *pCsr, /* For pKeyInfo */ +static SorterRecord *vdbeSorterMerge( + SortSubtask *pTask, /* Calling thread context */ SorterRecord *p1, /* First list to merge */ - SorterRecord *p2, /* Second list to merge */ - SorterRecord **ppOut /* OUT: Head of merged list */ + SorterRecord *p2 /* Second list to merge */ ){ SorterRecord *pFinal = 0; SorterRecord **pp = &pFinal; - void *pVal2 = p2 ? p2->pVal : 0; + int bCached = 0; - while( p1 && p2 ){ + assert( p1!=0 && p2!=0 ); + for(;;){ int res; - vdbeSorterCompare(pCsr, 0, p1->pVal, p1->nVal, pVal2, p2->nVal, &res); + res = pTask->xCompare( + pTask, &bCached, SRVAL(p1), p1->nVal, SRVAL(p2), p2->nVal + ); + if( res<=0 ){ *pp = p1; - pp = &p1->pNext; - p1 = p1->pNext; - pVal2 = 0; + pp = &p1->u.pNext; + p1 = p1->u.pNext; + if( p1==0 ){ + *pp = p2; + break; + } }else{ *pp = p2; - pp = &p2->pNext; - p2 = p2->pNext; - if( p2==0 ) break; - pVal2 = p2->pVal; + pp = &p2->u.pNext; + p2 = p2->u.pNext; + bCached = 0; + if( p2==0 ){ + *pp = p1; + break; + } } } - *pp = p1 ? p1 : p2; - *ppOut = pFinal; + return pFinal; } /* -** Sort the linked list of records headed at pCsr->pRecord. Return SQLITE_OK -** if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if an error -** occurs. +** Return the SorterCompare function to compare values collected by the +** sorter object passed as the only argument. */ -static int vdbeSorterSort(const VdbeCursor *pCsr){ +static SorterCompare vdbeSorterGetCompare(VdbeSorter *p){ + if( p->typeMask==SORTER_TYPE_INTEGER ){ + return vdbeSorterCompareInt; + }else if( p->typeMask==SORTER_TYPE_TEXT ){ + return vdbeSorterCompareText; + } + return vdbeSorterCompare; +} + +/* +** Sort the linked list of records headed at pTask->pList. Return +** SQLITE_OK if successful, or an SQLite error code (i.e. SQLITE_NOMEM) if +** an error occurs. +*/ +static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){ int i; SorterRecord **aSlot; SorterRecord *p; - VdbeSorter *pSorter = pCsr->pSorter; + int rc; + + rc = vdbeSortAllocUnpacked(pTask); + if( rc!=SQLITE_OK ) return rc; + + p = pList->pList; + pTask->xCompare = vdbeSorterGetCompare(pTask->pSorter); aSlot = (SorterRecord **)sqlite3MallocZero(64 * sizeof(SorterRecord *)); if( !aSlot ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } - p = pSorter->pRecord; while( p ){ - SorterRecord *pNext = p->pNext; - p->pNext = 0; + SorterRecord *pNext; + if( pList->aMemory ){ + if( (u8*)p==pList->aMemory ){ + pNext = 0; + }else{ + assert( p->u.iNextaMemory) ); + pNext = (SorterRecord*)&pList->aMemory[p->u.iNext]; + } + }else{ + pNext = p->u.pNext; + } + + p->u.pNext = 0; for(i=0; aSlot[i]; i++){ - vdbeSorterMerge(pCsr, p, aSlot[i], &p); + p = vdbeSorterMerge(pTask, p, aSlot[i]); aSlot[i] = 0; } aSlot[i] = p; @@ -73875,42 +87060,44 @@ static int vdbeSorterSort(const VdbeCursor *pCsr){ p = 0; for(i=0; i<64; i++){ - vdbeSorterMerge(pCsr, p, aSlot[i], &p); + if( aSlot[i]==0 ) continue; + p = p ? vdbeSorterMerge(pTask, p, aSlot[i]) : aSlot[i]; } - pSorter->pRecord = p; + pList->pList = p; sqlite3_free(aSlot); - return SQLITE_OK; + assert( pTask->pUnpacked->errCode==SQLITE_OK + || pTask->pUnpacked->errCode==SQLITE_NOMEM + ); + return pTask->pUnpacked->errCode; } /* -** Initialize a file-writer object. +** Initialize a PMA-writer object. */ -static void fileWriterInit( - sqlite3 *db, /* Database (for malloc) */ - sqlite3_file *pFile, /* File to write to */ - FileWriter *p, /* Object to populate */ - i64 iStart /* Offset of pFile to begin writing at */ +static void vdbePmaWriterInit( + sqlite3_file *pFd, /* File handle to write to */ + PmaWriter *p, /* Object to populate */ + int nBuf, /* Buffer size */ + i64 iStart /* Offset of pFd to begin writing at */ ){ - int nBuf = sqlite3BtreeGetPageSize(db->aDb[0].pBt); - - memset(p, 0, sizeof(FileWriter)); - p->aBuffer = (u8 *)sqlite3DbMallocRaw(db, nBuf); + memset(p, 0, sizeof(PmaWriter)); + p->aBuffer = (u8*)sqlite3Malloc(nBuf); if( !p->aBuffer ){ - p->eFWErr = SQLITE_NOMEM; + p->eFWErr = SQLITE_NOMEM_BKPT; }else{ p->iBufEnd = p->iBufStart = (iStart % nBuf); p->iWriteOff = iStart - p->iBufStart; p->nBuffer = nBuf; - p->pFile = pFile; + p->pFd = pFd; } } /* -** Write nData bytes of data to the file-write object. Return SQLITE_OK +** Write nData bytes of data to the PMA. Return SQLITE_OK ** if successful, or an SQLite error code if an error occurs. */ -static void fileWriterWrite(FileWriter *p, u8 *pData, int nData){ +static void vdbePmaWriteBlob(PmaWriter *p, u8 *pData, int nData){ int nRem = nData; while( nRem>0 && p->eFWErr==0 ){ int nCopy = nRem; @@ -73921,7 +87108,7 @@ static void fileWriterWrite(FileWriter *p, u8 *pData, int nData){ memcpy(&p->aBuffer[p->iBufEnd], &pData[nData-nRem], nCopy); p->iBufEnd += nCopy; if( p->iBufEnd==p->nBuffer ){ - p->eFWErr = sqlite3OsWrite(p->pFile, + p->eFWErr = sqlite3OsWrite(p->pFd, &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, p->iWriteOff + p->iBufStart ); @@ -73935,43 +87122,44 @@ static void fileWriterWrite(FileWriter *p, u8 *pData, int nData){ } /* -** Flush any buffered data to disk and clean up the file-writer object. -** The results of using the file-writer after this call are undefined. +** Flush any buffered data to disk and clean up the PMA-writer object. +** The results of using the PMA-writer after this call are undefined. ** Return SQLITE_OK if flushing the buffered data succeeds or is not ** required. Otherwise, return an SQLite error code. ** ** Before returning, set *piEof to the offset immediately following the ** last byte written to the file. */ -static int fileWriterFinish(sqlite3 *db, FileWriter *p, i64 *piEof){ +static int vdbePmaWriterFinish(PmaWriter *p, i64 *piEof){ int rc; if( p->eFWErr==0 && ALWAYS(p->aBuffer) && p->iBufEnd>p->iBufStart ){ - p->eFWErr = sqlite3OsWrite(p->pFile, + p->eFWErr = sqlite3OsWrite(p->pFd, &p->aBuffer[p->iBufStart], p->iBufEnd - p->iBufStart, p->iWriteOff + p->iBufStart ); } *piEof = (p->iWriteOff + p->iBufEnd); - sqlite3DbFree(db, p->aBuffer); + sqlite3_free(p->aBuffer); rc = p->eFWErr; - memset(p, 0, sizeof(FileWriter)); + memset(p, 0, sizeof(PmaWriter)); return rc; } /* -** Write value iVal encoded as a varint to the file-write object. Return +** Write value iVal encoded as a varint to the PMA. Return ** SQLITE_OK if successful, or an SQLite error code if an error occurs. */ -static void fileWriterWriteVarint(FileWriter *p, u64 iVal){ +static void vdbePmaWriteVarint(PmaWriter *p, u64 iVal){ int nByte; u8 aByte[10]; nByte = sqlite3PutVarint(aByte, iVal); - fileWriterWrite(p, aByte, nByte); + vdbePmaWriteBlob(p, aByte, nByte); } /* -** Write the current contents of the in-memory linked-list to a PMA. Return -** SQLITE_OK if successful, or an SQLite error code otherwise. +** Write the current contents of in-memory linked-list pList to a level-0 +** PMA in the temp file belonging to sub-task pTask. Return SQLITE_OK if +** successful, or an SQLite error code otherwise. ** ** The format of a PMA is: ** @@ -73982,76 +87170,256 @@ static void fileWriterWriteVarint(FileWriter *p, u64 iVal){ ** Each record consists of a varint followed by a blob of data (the ** key). The varint is the number of bytes in the blob of data. */ -static int vdbeSorterListToPMA(sqlite3 *db, const VdbeCursor *pCsr){ +static int vdbeSorterListToPMA(SortSubtask *pTask, SorterList *pList){ + sqlite3 *db = pTask->pSorter->db; int rc = SQLITE_OK; /* Return code */ - VdbeSorter *pSorter = pCsr->pSorter; - FileWriter writer; + PmaWriter writer; /* Object used to write to the file */ - memset(&writer, 0, sizeof(FileWriter)); +#ifdef SQLITE_DEBUG + /* Set iSz to the expected size of file pTask->file after writing the PMA. + ** This is used by an assert() statement at the end of this function. */ + i64 iSz = pList->szPMA + sqlite3VarintLen(pList->szPMA) + pTask->file.iEof; +#endif - if( pSorter->nInMemory==0 ){ - assert( pSorter->pRecord==0 ); - return rc; - } - - rc = vdbeSorterSort(pCsr); + vdbeSorterWorkDebug(pTask, "enter"); + memset(&writer, 0, sizeof(PmaWriter)); + assert( pList->szPMA>0 ); /* If the first temporary PMA file has not been opened, open it now. */ - if( rc==SQLITE_OK && pSorter->pTemp1==0 ){ - rc = vdbeSorterOpenTempFile(db, &pSorter->pTemp1); - assert( rc!=SQLITE_OK || pSorter->pTemp1 ); - assert( pSorter->iWriteOff==0 ); - assert( pSorter->nPMA==0 ); + if( pTask->file.pFd==0 ){ + rc = vdbeSorterOpenTempFile(db, 0, &pTask->file.pFd); + assert( rc!=SQLITE_OK || pTask->file.pFd ); + assert( pTask->file.iEof==0 ); + assert( pTask->nPMA==0 ); + } + + /* Try to get the file to memory map */ + if( rc==SQLITE_OK ){ + vdbeSorterExtendFile(db, pTask->file.pFd, pTask->file.iEof+pList->szPMA+9); + } + + /* Sort the list */ + if( rc==SQLITE_OK ){ + rc = vdbeSorterSort(pTask, pList); } if( rc==SQLITE_OK ){ SorterRecord *p; SorterRecord *pNext = 0; - fileWriterInit(db, pSorter->pTemp1, &writer, pSorter->iWriteOff); - pSorter->nPMA++; - fileWriterWriteVarint(&writer, pSorter->nInMemory); - for(p=pSorter->pRecord; p; p=pNext){ - pNext = p->pNext; - fileWriterWriteVarint(&writer, p->nVal); - fileWriterWrite(&writer, p->pVal, p->nVal); - sqlite3DbFree(db, p); + vdbePmaWriterInit(pTask->file.pFd, &writer, pTask->pSorter->pgsz, + pTask->file.iEof); + pTask->nPMA++; + vdbePmaWriteVarint(&writer, pList->szPMA); + for(p=pList->pList; p; p=pNext){ + pNext = p->u.pNext; + vdbePmaWriteVarint(&writer, p->nVal); + vdbePmaWriteBlob(&writer, SRVAL(p), p->nVal); + if( pList->aMemory==0 ) sqlite3_free(p); + } + pList->pList = p; + rc = vdbePmaWriterFinish(&writer, &pTask->file.iEof); + } + + vdbeSorterWorkDebug(pTask, "exit"); + assert( rc!=SQLITE_OK || pList->pList==0 ); + assert( rc!=SQLITE_OK || pTask->file.iEof==iSz ); + return rc; +} + +/* +** Advance the MergeEngine to its next entry. +** Set *pbEof to true there is no next entry because +** the MergeEngine has reached the end of all its inputs. +** +** Return SQLITE_OK if successful or an error code if an error occurs. +*/ +static int vdbeMergeEngineStep( + MergeEngine *pMerger, /* The merge engine to advance to the next row */ + int *pbEof /* Set TRUE at EOF. Set false for more content */ +){ + int rc; + int iPrev = pMerger->aTree[1];/* Index of PmaReader to advance */ + SortSubtask *pTask = pMerger->pTask; + + /* Advance the current PmaReader */ + rc = vdbePmaReaderNext(&pMerger->aReadr[iPrev]); + + /* Update contents of aTree[] */ + if( rc==SQLITE_OK ){ + int i; /* Index of aTree[] to recalculate */ + PmaReader *pReadr1; /* First PmaReader to compare */ + PmaReader *pReadr2; /* Second PmaReader to compare */ + int bCached = 0; + + /* Find the first two PmaReaders to compare. The one that was just + ** advanced (iPrev) and the one next to it in the array. */ + pReadr1 = &pMerger->aReadr[(iPrev & 0xFFFE)]; + pReadr2 = &pMerger->aReadr[(iPrev | 0x0001)]; + + for(i=(pMerger->nTree+iPrev)/2; i>0; i=i/2){ + /* Compare pReadr1 and pReadr2. Store the result in variable iRes. */ + int iRes; + if( pReadr1->pFd==0 ){ + iRes = +1; + }else if( pReadr2->pFd==0 ){ + iRes = -1; + }else{ + iRes = pTask->xCompare(pTask, &bCached, + pReadr1->aKey, pReadr1->nKey, pReadr2->aKey, pReadr2->nKey + ); + } + + /* If pReadr1 contained the smaller value, set aTree[i] to its index. + ** Then set pReadr2 to the next PmaReader to compare to pReadr1. In this + ** case there is no cache of pReadr2 in pTask->pUnpacked, so set + ** pKey2 to point to the record belonging to pReadr2. + ** + ** Alternatively, if pReadr2 contains the smaller of the two values, + ** set aTree[i] to its index and update pReadr1. If vdbeSorterCompare() + ** was actually called above, then pTask->pUnpacked now contains + ** a value equivalent to pReadr2. So set pKey2 to NULL to prevent + ** vdbeSorterCompare() from decoding pReadr2 again. + ** + ** If the two values were equal, then the value from the oldest + ** PMA should be considered smaller. The VdbeSorter.aReadr[] array + ** is sorted from oldest to newest, so pReadr1 contains older values + ** than pReadr2 iff (pReadr1aTree[i] = (int)(pReadr1 - pMerger->aReadr); + pReadr2 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ]; + bCached = 0; + }else{ + if( pReadr1->pFd ) bCached = 0; + pMerger->aTree[i] = (int)(pReadr2 - pMerger->aReadr); + pReadr1 = &pMerger->aReadr[ pMerger->aTree[i ^ 0x0001] ]; + } + } + *pbEof = (pMerger->aReadr[pMerger->aTree[1]].pFd==0); + } + + return (rc==SQLITE_OK ? pTask->pUnpacked->errCode : rc); +} + +#if SQLITE_MAX_WORKER_THREADS>0 +/* +** The main routine for background threads that write level-0 PMAs. +*/ +static void *vdbeSorterFlushThread(void *pCtx){ + SortSubtask *pTask = (SortSubtask*)pCtx; + int rc; /* Return code */ + assert( pTask->bDone==0 ); + rc = vdbeSorterListToPMA(pTask, &pTask->list); + pTask->bDone = 1; + return SQLITE_INT_TO_PTR(rc); +} +#endif /* SQLITE_MAX_WORKER_THREADS>0 */ + +/* +** Flush the current contents of VdbeSorter.list to a new PMA, possibly +** using a background thread. +*/ +static int vdbeSorterFlushPMA(VdbeSorter *pSorter){ +#if SQLITE_MAX_WORKER_THREADS==0 + pSorter->bUsePMA = 1; + return vdbeSorterListToPMA(&pSorter->aTask[0], &pSorter->list); +#else + int rc = SQLITE_OK; + int i; + SortSubtask *pTask = 0; /* Thread context used to create new PMA */ + int nWorker = (pSorter->nTask-1); + + /* Set the flag to indicate that at least one PMA has been written. + ** Or will be, anyhow. */ + pSorter->bUsePMA = 1; + + /* Select a sub-task to sort and flush the current list of in-memory + ** records to disk. If the sorter is running in multi-threaded mode, + ** round-robin between the first (pSorter->nTask-1) tasks. Except, if + ** the background thread from a sub-tasks previous turn is still running, + ** skip it. If the first (pSorter->nTask-1) sub-tasks are all still busy, + ** fall back to using the final sub-task. The first (pSorter->nTask-1) + ** sub-tasks are prefered as they use background threads - the final + ** sub-task uses the main thread. */ + for(i=0; iiPrev + i + 1) % nWorker; + pTask = &pSorter->aTask[iTest]; + if( pTask->bDone ){ + rc = vdbeSorterJoinThread(pTask); + } + if( rc!=SQLITE_OK || pTask->pThread==0 ) break; + } + + if( rc==SQLITE_OK ){ + if( i==nWorker ){ + /* Use the foreground thread for this operation */ + rc = vdbeSorterListToPMA(&pSorter->aTask[nWorker], &pSorter->list); + }else{ + /* Launch a background thread for this operation */ + u8 *aMem = pTask->list.aMemory; + void *pCtx = (void*)pTask; + + assert( pTask->pThread==0 && pTask->bDone==0 ); + assert( pTask->list.pList==0 ); + assert( pTask->list.aMemory==0 || pSorter->list.aMemory!=0 ); + + pSorter->iPrev = (u8)(pTask - pSorter->aTask); + pTask->list = pSorter->list; + pSorter->list.pList = 0; + pSorter->list.szPMA = 0; + if( aMem ){ + pSorter->list.aMemory = aMem; + pSorter->nMemory = sqlite3MallocSize(aMem); + }else if( pSorter->list.aMemory ){ + pSorter->list.aMemory = sqlite3Malloc(pSorter->nMemory); + if( !pSorter->list.aMemory ) return SQLITE_NOMEM_BKPT; + } + + rc = vdbeSorterCreateThread(pTask, vdbeSorterFlushThread, pCtx); } - pSorter->pRecord = p; - rc = fileWriterFinish(db, &writer, &pSorter->iWriteOff); } return rc; +#endif /* SQLITE_MAX_WORKER_THREADS!=0 */ } /* ** Add a record to the sorter. */ SQLITE_PRIVATE int sqlite3VdbeSorterWrite( - sqlite3 *db, /* Database handle */ - const VdbeCursor *pCsr, /* Sorter cursor */ + const VdbeCursor *pCsr, /* Sorter cursor */ Mem *pVal /* Memory cell containing record */ ){ - VdbeSorter *pSorter = pCsr->pSorter; + VdbeSorter *pSorter; int rc = SQLITE_OK; /* Return Code */ SorterRecord *pNew; /* New list element */ + int bFlush; /* True to flush contents of memory to PMA */ + int nReq; /* Bytes of memory required */ + int nPMA; /* Bytes of PMA space required */ + int t; /* serial type of first record field */ - assert( pSorter ); - pSorter->nInMemory += sqlite3VarintLen(pVal->n) + pVal->n; - - pNew = (SorterRecord *)sqlite3DbMallocRaw(db, pVal->n + sizeof(SorterRecord)); - if( pNew==0 ){ - rc = SQLITE_NOMEM; + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; + getVarint32((const u8*)&pVal->z[1], t); + if( t>0 && t<10 && t!=7 ){ + pSorter->typeMask &= SORTER_TYPE_INTEGER; + }else if( t>10 && (t & 0x01) ){ + pSorter->typeMask &= SORTER_TYPE_TEXT; }else{ - pNew->pVal = (void *)&pNew[1]; - memcpy(pNew->pVal, pVal->z, pVal->n); - pNew->nVal = pVal->n; - pNew->pNext = pSorter->pRecord; - pSorter->pRecord = pNew; + pSorter->typeMask = 0; } - /* See if the contents of the sorter should now be written out. They - ** are written out when either of the following are true: + assert( pSorter ); + + /* Figure out whether or not the current contents of memory should be + ** flushed to a PMA before continuing. If so, do so. + ** + ** If using the single large allocation mode (pSorter->aMemory!=0), then + ** flush the contents of memory to a new PMA if (a) at least one value is + ** already in memory and (b) the new value will not fit in memory. + ** + ** Or, if using separate allocations for each record, flush the contents + ** of memory to a PMA if either of the following are true: ** ** * The total memory allocated for the in-memory list is greater ** than (page-size * cache-size), or @@ -74059,161 +87427,812 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite( ** * The total memory allocated for the in-memory list is greater ** than (page-size * 10) and sqlite3HeapNearlyFull() returns true. */ - if( rc==SQLITE_OK && pSorter->mxPmaSize>0 && ( - (pSorter->nInMemory>pSorter->mxPmaSize) - || (pSorter->nInMemory>pSorter->mnPmaSize && sqlite3HeapNearlyFull()) - )){ -#ifdef SQLITE_DEBUG - i64 nExpect = pSorter->iWriteOff - + sqlite3VarintLen(pSorter->nInMemory) - + pSorter->nInMemory; + nReq = pVal->n + sizeof(SorterRecord); + nPMA = pVal->n + sqlite3VarintLen(pVal->n); + if( pSorter->mxPmaSize ){ + if( pSorter->list.aMemory ){ + bFlush = pSorter->iMemory && (pSorter->iMemory+nReq) > pSorter->mxPmaSize; + }else{ + bFlush = ( + (pSorter->list.szPMA > pSorter->mxPmaSize) + || (pSorter->list.szPMA > pSorter->mnPmaSize && sqlite3HeapNearlyFull()) + ); + } + if( bFlush ){ + rc = vdbeSorterFlushPMA(pSorter); + pSorter->list.szPMA = 0; + pSorter->iMemory = 0; + assert( rc!=SQLITE_OK || pSorter->list.pList==0 ); + } + } + + pSorter->list.szPMA += nPMA; + if( nPMA>pSorter->mxKeysize ){ + pSorter->mxKeysize = nPMA; + } + + if( pSorter->list.aMemory ){ + int nMin = pSorter->iMemory + nReq; + + if( nMin>pSorter->nMemory ){ + u8 *aNew; + int iListOff = (u8*)pSorter->list.pList - pSorter->list.aMemory; + int nNew = pSorter->nMemory * 2; + while( nNew < nMin ) nNew = nNew*2; + if( nNew > pSorter->mxPmaSize ) nNew = pSorter->mxPmaSize; + if( nNew < nMin ) nNew = nMin; + + aNew = sqlite3Realloc(pSorter->list.aMemory, nNew); + if( !aNew ) return SQLITE_NOMEM_BKPT; + pSorter->list.pList = (SorterRecord*)&aNew[iListOff]; + pSorter->list.aMemory = aNew; + pSorter->nMemory = nNew; + } + + pNew = (SorterRecord*)&pSorter->list.aMemory[pSorter->iMemory]; + pSorter->iMemory += ROUND8(nReq); + if( pSorter->list.pList ){ + pNew->u.iNext = (int)((u8*)(pSorter->list.pList) - pSorter->list.aMemory); + } + }else{ + pNew = (SorterRecord *)sqlite3Malloc(nReq); + if( pNew==0 ){ + return SQLITE_NOMEM_BKPT; + } + pNew->u.pNext = pSorter->list.pList; + } + + memcpy(SRVAL(pNew), pVal->z, pVal->n); + pNew->nVal = pVal->n; + pSorter->list.pList = pNew; + + return rc; +} + +/* +** Read keys from pIncr->pMerger and populate pIncr->aFile[1]. The format +** of the data stored in aFile[1] is the same as that used by regular PMAs, +** except that the number-of-bytes varint is omitted from the start. +*/ +static int vdbeIncrPopulate(IncrMerger *pIncr){ + int rc = SQLITE_OK; + int rc2; + i64 iStart = pIncr->iStartOff; + SorterFile *pOut = &pIncr->aFile[1]; + SortSubtask *pTask = pIncr->pTask; + MergeEngine *pMerger = pIncr->pMerger; + PmaWriter writer; + assert( pIncr->bEof==0 ); + + vdbeSorterPopulateDebug(pTask, "enter"); + + vdbePmaWriterInit(pOut->pFd, &writer, pTask->pSorter->pgsz, iStart); + while( rc==SQLITE_OK ){ + int dummy; + PmaReader *pReader = &pMerger->aReadr[ pMerger->aTree[1] ]; + int nKey = pReader->nKey; + i64 iEof = writer.iWriteOff + writer.iBufEnd; + + /* Check if the output file is full or if the input has been exhausted. + ** In either case exit the loop. */ + if( pReader->pFd==0 ) break; + if( (iEof + nKey + sqlite3VarintLen(nKey))>(iStart + pIncr->mxSz) ) break; + + /* Write the next key to the output. */ + vdbePmaWriteVarint(&writer, nKey); + vdbePmaWriteBlob(&writer, pReader->aKey, nKey); + assert( pIncr->pMerger->pTask==pTask ); + rc = vdbeMergeEngineStep(pIncr->pMerger, &dummy); + } + + rc2 = vdbePmaWriterFinish(&writer, &pOut->iEof); + if( rc==SQLITE_OK ) rc = rc2; + vdbeSorterPopulateDebug(pTask, "exit"); + return rc; +} + +#if SQLITE_MAX_WORKER_THREADS>0 +/* +** The main routine for background threads that populate aFile[1] of +** multi-threaded IncrMerger objects. +*/ +static void *vdbeIncrPopulateThread(void *pCtx){ + IncrMerger *pIncr = (IncrMerger*)pCtx; + void *pRet = SQLITE_INT_TO_PTR( vdbeIncrPopulate(pIncr) ); + pIncr->pTask->bDone = 1; + return pRet; +} + +/* +** Launch a background thread to populate aFile[1] of pIncr. +*/ +static int vdbeIncrBgPopulate(IncrMerger *pIncr){ + void *p = (void*)pIncr; + assert( pIncr->bUseThread ); + return vdbeSorterCreateThread(pIncr->pTask, vdbeIncrPopulateThread, p); +} #endif - rc = vdbeSorterListToPMA(db, pCsr); - pSorter->nInMemory = 0; - assert( rc!=SQLITE_OK || (nExpect==pSorter->iWriteOff) ); + +/* +** This function is called when the PmaReader corresponding to pIncr has +** finished reading the contents of aFile[0]. Its purpose is to "refill" +** aFile[0] such that the PmaReader should start rereading it from the +** beginning. +** +** For single-threaded objects, this is accomplished by literally reading +** keys from pIncr->pMerger and repopulating aFile[0]. +** +** For multi-threaded objects, all that is required is to wait until the +** background thread is finished (if it is not already) and then swap +** aFile[0] and aFile[1] in place. If the contents of pMerger have not +** been exhausted, this function also launches a new background thread +** to populate the new aFile[1]. +** +** SQLITE_OK is returned on success, or an SQLite error code otherwise. +*/ +static int vdbeIncrSwap(IncrMerger *pIncr){ + int rc = SQLITE_OK; + +#if SQLITE_MAX_WORKER_THREADS>0 + if( pIncr->bUseThread ){ + rc = vdbeSorterJoinThread(pIncr->pTask); + + if( rc==SQLITE_OK ){ + SorterFile f0 = pIncr->aFile[0]; + pIncr->aFile[0] = pIncr->aFile[1]; + pIncr->aFile[1] = f0; + } + + if( rc==SQLITE_OK ){ + if( pIncr->aFile[0].iEof==pIncr->iStartOff ){ + pIncr->bEof = 1; + }else{ + rc = vdbeIncrBgPopulate(pIncr); + } + } + }else +#endif + { + rc = vdbeIncrPopulate(pIncr); + pIncr->aFile[0] = pIncr->aFile[1]; + if( pIncr->aFile[0].iEof==pIncr->iStartOff ){ + pIncr->bEof = 1; + } } return rc; } /* -** Helper function for sqlite3VdbeSorterRewind(). +** Allocate and return a new IncrMerger object to read data from pMerger. +** +** If an OOM condition is encountered, return NULL. In this case free the +** pMerger argument before returning. */ -static int vdbeSorterInitMerge( - sqlite3 *db, /* Database handle */ - const VdbeCursor *pCsr, /* Cursor handle for this sorter */ - i64 *pnByte /* Sum of bytes in all opened PMAs */ +static int vdbeIncrMergerNew( + SortSubtask *pTask, /* The thread that will be using the new IncrMerger */ + MergeEngine *pMerger, /* The MergeEngine that the IncrMerger will control */ + IncrMerger **ppOut /* Write the new IncrMerger here */ +){ + int rc = SQLITE_OK; + IncrMerger *pIncr = *ppOut = (IncrMerger*) + (sqlite3FaultSim(100) ? 0 : sqlite3MallocZero(sizeof(*pIncr))); + if( pIncr ){ + pIncr->pMerger = pMerger; + pIncr->pTask = pTask; + pIncr->mxSz = MAX(pTask->pSorter->mxKeysize+9,pTask->pSorter->mxPmaSize/2); + pTask->file2.iEof += pIncr->mxSz; + }else{ + vdbeMergeEngineFree(pMerger); + rc = SQLITE_NOMEM_BKPT; + } + return rc; +} + +#if SQLITE_MAX_WORKER_THREADS>0 +/* +** Set the "use-threads" flag on object pIncr. +*/ +static void vdbeIncrMergerSetThreads(IncrMerger *pIncr){ + pIncr->bUseThread = 1; + pIncr->pTask->file2.iEof -= pIncr->mxSz; +} +#endif /* SQLITE_MAX_WORKER_THREADS>0 */ + + + +/* +** Recompute pMerger->aTree[iOut] by comparing the next keys on the +** two PmaReaders that feed that entry. Neither of the PmaReaders +** are advanced. This routine merely does the comparison. +*/ +static void vdbeMergeEngineCompare( + MergeEngine *pMerger, /* Merge engine containing PmaReaders to compare */ + int iOut /* Store the result in pMerger->aTree[iOut] */ +){ + int i1; + int i2; + int iRes; + PmaReader *p1; + PmaReader *p2; + + assert( iOutnTree && iOut>0 ); + + if( iOut>=(pMerger->nTree/2) ){ + i1 = (iOut - pMerger->nTree/2) * 2; + i2 = i1 + 1; + }else{ + i1 = pMerger->aTree[iOut*2]; + i2 = pMerger->aTree[iOut*2+1]; + } + + p1 = &pMerger->aReadr[i1]; + p2 = &pMerger->aReadr[i2]; + + if( p1->pFd==0 ){ + iRes = i2; + }else if( p2->pFd==0 ){ + iRes = i1; + }else{ + SortSubtask *pTask = pMerger->pTask; + int bCached = 0; + int res; + assert( pTask->pUnpacked!=0 ); /* from vdbeSortSubtaskMain() */ + res = pTask->xCompare( + pTask, &bCached, p1->aKey, p1->nKey, p2->aKey, p2->nKey + ); + if( res<=0 ){ + iRes = i1; + }else{ + iRes = i2; + } + } + + pMerger->aTree[iOut] = iRes; +} + +/* +** Allowed values for the eMode parameter to vdbeMergeEngineInit() +** and vdbePmaReaderIncrMergeInit(). +** +** Only INCRINIT_NORMAL is valid in single-threaded builds (when +** SQLITE_MAX_WORKER_THREADS==0). The other values are only used +** when there exists one or more separate worker threads. +*/ +#define INCRINIT_NORMAL 0 +#define INCRINIT_TASK 1 +#define INCRINIT_ROOT 2 + +/* +** Forward reference required as the vdbeIncrMergeInit() and +** vdbePmaReaderIncrInit() routines are called mutually recursively when +** building a merge tree. +*/ +static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode); + +/* +** Initialize the MergeEngine object passed as the second argument. Once this +** function returns, the first key of merged data may be read from the +** MergeEngine object in the usual fashion. +** +** If argument eMode is INCRINIT_ROOT, then it is assumed that any IncrMerge +** objects attached to the PmaReader objects that the merger reads from have +** already been populated, but that they have not yet populated aFile[0] and +** set the PmaReader objects up to read from it. In this case all that is +** required is to call vdbePmaReaderNext() on each PmaReader to point it at +** its first key. +** +** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use +** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data +** to pMerger. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +static int vdbeMergeEngineInit( + SortSubtask *pTask, /* Thread that will run pMerger */ + MergeEngine *pMerger, /* MergeEngine to initialize */ + int eMode /* One of the INCRINIT_XXX constants */ ){ - VdbeSorter *pSorter = pCsr->pSorter; int rc = SQLITE_OK; /* Return code */ - int i; /* Used to iterator through aIter[] */ - i64 nByte = 0; /* Total bytes in all opened PMAs */ + int i; /* For looping over PmaReader objects */ + int nTree = pMerger->nTree; - /* Initialize the iterators. */ - for(i=0; iaIter[i]; - rc = vdbeSorterIterInit(db, pSorter, pSorter->iReadOff, pIter, &nByte); - pSorter->iReadOff = pIter->iEof; - assert( rc!=SQLITE_OK || pSorter->iReadOff<=pSorter->iWriteOff ); - if( rc!=SQLITE_OK || pSorter->iReadOff>=pSorter->iWriteOff ) break; + /* eMode is always INCRINIT_NORMAL in single-threaded mode */ + assert( SQLITE_MAX_WORKER_THREADS>0 || eMode==INCRINIT_NORMAL ); + + /* Verify that the MergeEngine is assigned to a single thread */ + assert( pMerger->pTask==0 ); + pMerger->pTask = pTask; + + for(i=0; i0 && eMode==INCRINIT_ROOT ){ + /* PmaReaders should be normally initialized in order, as if they are + ** reading from the same temp file this makes for more linear file IO. + ** However, in the INCRINIT_ROOT case, if PmaReader aReadr[nTask-1] is + ** in use it will block the vdbePmaReaderNext() call while it uses + ** the main thread to fill its buffer. So calling PmaReaderNext() + ** on this PmaReader before any of the multi-threaded PmaReaders takes + ** better advantage of multi-processor hardware. */ + rc = vdbePmaReaderNext(&pMerger->aReadr[nTree-i-1]); + }else{ + rc = vdbePmaReaderIncrInit(&pMerger->aReadr[i], INCRINIT_NORMAL); + } + if( rc!=SQLITE_OK ) return rc; } - /* Initialize the aTree[] array. */ - for(i=pSorter->nTree-1; rc==SQLITE_OK && i>0; i--){ - rc = vdbeSorterDoCompare(pCsr, i); + for(i=pMerger->nTree-1; i>0; i--){ + vdbeMergeEngineCompare(pMerger, i); + } + return pTask->pUnpacked->errCode; +} + +/* +** The PmaReader passed as the first argument is guaranteed to be an +** incremental-reader (pReadr->pIncr!=0). This function serves to open +** and/or initialize the temp file related fields of the IncrMerge +** object at (pReadr->pIncr). +** +** If argument eMode is set to INCRINIT_NORMAL, then all PmaReaders +** in the sub-tree headed by pReadr are also initialized. Data is then +** loaded into the buffers belonging to pReadr and it is set to point to +** the first key in its range. +** +** If argument eMode is set to INCRINIT_TASK, then pReadr is guaranteed +** to be a multi-threaded PmaReader and this function is being called in a +** background thread. In this case all PmaReaders in the sub-tree are +** initialized as for INCRINIT_NORMAL and the aFile[1] buffer belonging to +** pReadr is populated. However, pReadr itself is not set up to point +** to its first key. A call to vdbePmaReaderNext() is still required to do +** that. +** +** The reason this function does not call vdbePmaReaderNext() immediately +** in the INCRINIT_TASK case is that vdbePmaReaderNext() assumes that it has +** to block on thread (pTask->thread) before accessing aFile[1]. But, since +** this entire function is being run by thread (pTask->thread), that will +** lead to the current background thread attempting to join itself. +** +** Finally, if argument eMode is set to INCRINIT_ROOT, it may be assumed +** that pReadr->pIncr is a multi-threaded IncrMerge objects, and that all +** child-trees have already been initialized using IncrInit(INCRINIT_TASK). +** In this case vdbePmaReaderNext() is called on all child PmaReaders and +** the current PmaReader set to point to the first key in its range. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){ + int rc = SQLITE_OK; + IncrMerger *pIncr = pReadr->pIncr; + SortSubtask *pTask = pIncr->pTask; + sqlite3 *db = pTask->pSorter->db; + + /* eMode is always INCRINIT_NORMAL in single-threaded mode */ + assert( SQLITE_MAX_WORKER_THREADS>0 || eMode==INCRINIT_NORMAL ); + + rc = vdbeMergeEngineInit(pTask, pIncr->pMerger, eMode); + + /* Set up the required files for pIncr. A multi-theaded IncrMerge object + ** requires two temp files to itself, whereas a single-threaded object + ** only requires a region of pTask->file2. */ + if( rc==SQLITE_OK ){ + int mxSz = pIncr->mxSz; +#if SQLITE_MAX_WORKER_THREADS>0 + if( pIncr->bUseThread ){ + rc = vdbeSorterOpenTempFile(db, mxSz, &pIncr->aFile[0].pFd); + if( rc==SQLITE_OK ){ + rc = vdbeSorterOpenTempFile(db, mxSz, &pIncr->aFile[1].pFd); + } + }else +#endif + /*if( !pIncr->bUseThread )*/{ + if( pTask->file2.pFd==0 ){ + assert( pTask->file2.iEof>0 ); + rc = vdbeSorterOpenTempFile(db, pTask->file2.iEof, &pTask->file2.pFd); + pTask->file2.iEof = 0; + } + if( rc==SQLITE_OK ){ + pIncr->aFile[1].pFd = pTask->file2.pFd; + pIncr->iStartOff = pTask->file2.iEof; + pTask->file2.iEof += mxSz; + } + } } - *pnByte = nByte; +#if SQLITE_MAX_WORKER_THREADS>0 + if( rc==SQLITE_OK && pIncr->bUseThread ){ + /* Use the current thread to populate aFile[1], even though this + ** PmaReader is multi-threaded. If this is an INCRINIT_TASK object, + ** then this function is already running in background thread + ** pIncr->pTask->thread. + ** + ** If this is the INCRINIT_ROOT object, then it is running in the + ** main VDBE thread. But that is Ok, as that thread cannot return + ** control to the VDBE or proceed with anything useful until the + ** first results are ready from this merger object anyway. + */ + assert( eMode==INCRINIT_ROOT || eMode==INCRINIT_TASK ); + rc = vdbeIncrPopulate(pIncr); + } +#endif + + if( rc==SQLITE_OK && (SQLITE_MAX_WORKER_THREADS==0 || eMode!=INCRINIT_TASK) ){ + rc = vdbePmaReaderNext(pReadr); + } + + return rc; +} + +#if SQLITE_MAX_WORKER_THREADS>0 +/* +** The main routine for vdbePmaReaderIncrMergeInit() operations run in +** background threads. +*/ +static void *vdbePmaReaderBgIncrInit(void *pCtx){ + PmaReader *pReader = (PmaReader*)pCtx; + void *pRet = SQLITE_INT_TO_PTR( + vdbePmaReaderIncrMergeInit(pReader,INCRINIT_TASK) + ); + pReader->pIncr->pTask->bDone = 1; + return pRet; +} +#endif + +/* +** If the PmaReader passed as the first argument is not an incremental-reader +** (if pReadr->pIncr==0), then this function is a no-op. Otherwise, it invokes +** the vdbePmaReaderIncrMergeInit() function with the parameters passed to +** this routine to initialize the incremental merge. +** +** If the IncrMerger object is multi-threaded (IncrMerger.bUseThread==1), +** then a background thread is launched to call vdbePmaReaderIncrMergeInit(). +** Or, if the IncrMerger is single threaded, the same function is called +** using the current thread. +*/ +static int vdbePmaReaderIncrInit(PmaReader *pReadr, int eMode){ + IncrMerger *pIncr = pReadr->pIncr; /* Incremental merger */ + int rc = SQLITE_OK; /* Return code */ + if( pIncr ){ +#if SQLITE_MAX_WORKER_THREADS>0 + assert( pIncr->bUseThread==0 || eMode==INCRINIT_TASK ); + if( pIncr->bUseThread ){ + void *pCtx = (void*)pReadr; + rc = vdbeSorterCreateThread(pIncr->pTask, vdbePmaReaderBgIncrInit, pCtx); + }else +#endif + { + rc = vdbePmaReaderIncrMergeInit(pReadr, eMode); + } + } return rc; } /* -** Once the sorter has been populated, this function is called to prepare -** for iterating through its contents in sorted order. +** Allocate a new MergeEngine object to merge the contents of nPMA level-0 +** PMAs from pTask->file. If no error occurs, set *ppOut to point to +** the new object and return SQLITE_OK. Or, if an error does occur, set *ppOut +** to NULL and return an SQLite error code. +** +** When this function is called, *piOffset is set to the offset of the +** first PMA to read from pTask->file. Assuming no error occurs, it is +** set to the offset immediately following the last byte of the last +** PMA before returning. If an error does occur, then the final value of +** *piOffset is undefined. */ -SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *db, const VdbeCursor *pCsr, int *pbEof){ - VdbeSorter *pSorter = pCsr->pSorter; - int rc; /* Return code */ - sqlite3_file *pTemp2 = 0; /* Second temp file to use */ - i64 iWrite2 = 0; /* Write offset for pTemp2 */ - int nIter; /* Number of iterators used */ - int nByte; /* Bytes of space required for aIter/aTree */ - int N = 2; /* Power of 2 >= nIter */ +static int vdbeMergeEngineLevel0( + SortSubtask *pTask, /* Sorter task to read from */ + int nPMA, /* Number of PMAs to read */ + i64 *piOffset, /* IN/OUT: Readr offset in pTask->file */ + MergeEngine **ppOut /* OUT: New merge-engine */ +){ + MergeEngine *pNew; /* Merge engine to return */ + i64 iOff = *piOffset; + int i; + int rc = SQLITE_OK; + *ppOut = pNew = vdbeMergeEngineNew(nPMA); + if( pNew==0 ) rc = SQLITE_NOMEM_BKPT; + + for(i=0; iaReadr[i]; + rc = vdbePmaReaderInit(pTask, &pTask->file, iOff, pReadr, &nDummy); + iOff = pReadr->iEof; + } + + if( rc!=SQLITE_OK ){ + vdbeMergeEngineFree(pNew); + *ppOut = 0; + } + *piOffset = iOff; + return rc; +} + +/* +** Return the depth of a tree comprising nPMA PMAs, assuming a fanout of +** SORTER_MAX_MERGE_COUNT. The returned value does not include leaf nodes. +** +** i.e. +** +** nPMA<=16 -> TreeDepth() == 0 +** nPMA<=256 -> TreeDepth() == 1 +** nPMA<=65536 -> TreeDepth() == 2 +*/ +static int vdbeSorterTreeDepth(int nPMA){ + int nDepth = 0; + i64 nDiv = SORTER_MAX_MERGE_COUNT; + while( nDiv < (i64)nPMA ){ + nDiv = nDiv * SORTER_MAX_MERGE_COUNT; + nDepth++; + } + return nDepth; +} + +/* +** pRoot is the root of an incremental merge-tree with depth nDepth (according +** to vdbeSorterTreeDepth()). pLeaf is the iSeq'th leaf to be added to the +** tree, counting from zero. This function adds pLeaf to the tree. +** +** If successful, SQLITE_OK is returned. If an error occurs, an SQLite error +** code is returned and pLeaf is freed. +*/ +static int vdbeSorterAddToTree( + SortSubtask *pTask, /* Task context */ + int nDepth, /* Depth of tree according to TreeDepth() */ + int iSeq, /* Sequence number of leaf within tree */ + MergeEngine *pRoot, /* Root of tree */ + MergeEngine *pLeaf /* Leaf to add to tree */ +){ + int rc = SQLITE_OK; + int nDiv = 1; + int i; + MergeEngine *p = pRoot; + IncrMerger *pIncr; + + rc = vdbeIncrMergerNew(pTask, pLeaf, &pIncr); + + for(i=1; iaReadr[iIter]; + + if( pReadr->pIncr==0 ){ + MergeEngine *pNew = vdbeMergeEngineNew(SORTER_MAX_MERGE_COUNT); + if( pNew==0 ){ + rc = SQLITE_NOMEM_BKPT; + }else{ + rc = vdbeIncrMergerNew(pTask, pNew, &pReadr->pIncr); + } + } + if( rc==SQLITE_OK ){ + p = pReadr->pIncr->pMerger; + nDiv = nDiv / SORTER_MAX_MERGE_COUNT; + } + } + + if( rc==SQLITE_OK ){ + p->aReadr[iSeq % SORTER_MAX_MERGE_COUNT].pIncr = pIncr; + }else{ + vdbeIncrFree(pIncr); + } + return rc; +} + +/* +** This function is called as part of a SorterRewind() operation on a sorter +** that has already written two or more level-0 PMAs to one or more temp +** files. It builds a tree of MergeEngine/IncrMerger/PmaReader objects that +** can be used to incrementally merge all PMAs on disk. +** +** If successful, SQLITE_OK is returned and *ppOut set to point to the +** MergeEngine object at the root of the tree before returning. Or, if an +** error occurs, an SQLite error code is returned and the final value +** of *ppOut is undefined. +*/ +static int vdbeSorterMergeTreeBuild( + VdbeSorter *pSorter, /* The VDBE cursor that implements the sort */ + MergeEngine **ppOut /* Write the MergeEngine here */ +){ + MergeEngine *pMain = 0; + int rc = SQLITE_OK; + int iTask; + +#if SQLITE_MAX_WORKER_THREADS>0 + /* If the sorter uses more than one task, then create the top-level + ** MergeEngine here. This MergeEngine will read data from exactly + ** one PmaReader per sub-task. */ + assert( pSorter->bUseThreads || pSorter->nTask==1 ); + if( pSorter->nTask>1 ){ + pMain = vdbeMergeEngineNew(pSorter->nTask); + if( pMain==0 ) rc = SQLITE_NOMEM_BKPT; + } +#endif + + for(iTask=0; rc==SQLITE_OK && iTasknTask; iTask++){ + SortSubtask *pTask = &pSorter->aTask[iTask]; + assert( pTask->nPMA>0 || SQLITE_MAX_WORKER_THREADS>0 ); + if( SQLITE_MAX_WORKER_THREADS==0 || pTask->nPMA ){ + MergeEngine *pRoot = 0; /* Root node of tree for this task */ + int nDepth = vdbeSorterTreeDepth(pTask->nPMA); + i64 iReadOff = 0; + + if( pTask->nPMA<=SORTER_MAX_MERGE_COUNT ){ + rc = vdbeMergeEngineLevel0(pTask, pTask->nPMA, &iReadOff, &pRoot); + }else{ + int i; + int iSeq = 0; + pRoot = vdbeMergeEngineNew(SORTER_MAX_MERGE_COUNT); + if( pRoot==0 ) rc = SQLITE_NOMEM_BKPT; + for(i=0; inPMA && rc==SQLITE_OK; i += SORTER_MAX_MERGE_COUNT){ + MergeEngine *pMerger = 0; /* New level-0 PMA merger */ + int nReader; /* Number of level-0 PMAs to merge */ + + nReader = MIN(pTask->nPMA - i, SORTER_MAX_MERGE_COUNT); + rc = vdbeMergeEngineLevel0(pTask, nReader, &iReadOff, &pMerger); + if( rc==SQLITE_OK ){ + rc = vdbeSorterAddToTree(pTask, nDepth, iSeq++, pRoot, pMerger); + } + } + } + + if( rc==SQLITE_OK ){ +#if SQLITE_MAX_WORKER_THREADS>0 + if( pMain!=0 ){ + rc = vdbeIncrMergerNew(pTask, pRoot, &pMain->aReadr[iTask].pIncr); + }else +#endif + { + assert( pMain==0 ); + pMain = pRoot; + } + }else{ + vdbeMergeEngineFree(pRoot); + } + } + } + + if( rc!=SQLITE_OK ){ + vdbeMergeEngineFree(pMain); + pMain = 0; + } + *ppOut = pMain; + return rc; +} + +/* +** This function is called as part of an sqlite3VdbeSorterRewind() operation +** on a sorter that has written two or more PMAs to temporary files. It sets +** up either VdbeSorter.pMerger (for single threaded sorters) or pReader +** (for multi-threaded sorters) so that it can be used to iterate through +** all records stored in the sorter. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +static int vdbeSorterSetupMerge(VdbeSorter *pSorter){ + int rc; /* Return code */ + SortSubtask *pTask0 = &pSorter->aTask[0]; + MergeEngine *pMain = 0; +#if SQLITE_MAX_WORKER_THREADS + sqlite3 *db = pTask0->pSorter->db; + int i; + SorterCompare xCompare = vdbeSorterGetCompare(pSorter); + for(i=0; inTask; i++){ + pSorter->aTask[i].xCompare = xCompare; + } +#endif + + rc = vdbeSorterMergeTreeBuild(pSorter, &pMain); + if( rc==SQLITE_OK ){ +#if SQLITE_MAX_WORKER_THREADS + assert( pSorter->bUseThreads==0 || pSorter->nTask>1 ); + if( pSorter->bUseThreads ){ + int iTask; + PmaReader *pReadr = 0; + SortSubtask *pLast = &pSorter->aTask[pSorter->nTask-1]; + rc = vdbeSortAllocUnpacked(pLast); + if( rc==SQLITE_OK ){ + pReadr = (PmaReader*)sqlite3DbMallocZero(db, sizeof(PmaReader)); + pSorter->pReader = pReadr; + if( pReadr==0 ) rc = SQLITE_NOMEM_BKPT; + } + if( rc==SQLITE_OK ){ + rc = vdbeIncrMergerNew(pLast, pMain, &pReadr->pIncr); + if( rc==SQLITE_OK ){ + vdbeIncrMergerSetThreads(pReadr->pIncr); + for(iTask=0; iTask<(pSorter->nTask-1); iTask++){ + IncrMerger *pIncr; + if( (pIncr = pMain->aReadr[iTask].pIncr) ){ + vdbeIncrMergerSetThreads(pIncr); + assert( pIncr->pTask!=pLast ); + } + } + for(iTask=0; rc==SQLITE_OK && iTasknTask; iTask++){ + /* Check that: + ** + ** a) The incremental merge object is configured to use the + ** right task, and + ** b) If it is using task (nTask-1), it is configured to run + ** in single-threaded mode. This is important, as the + ** root merge (INCRINIT_ROOT) will be using the same task + ** object. + */ + PmaReader *p = &pMain->aReadr[iTask]; + assert( p->pIncr==0 || ( + (p->pIncr->pTask==&pSorter->aTask[iTask]) /* a */ + && (iTask!=pSorter->nTask-1 || p->pIncr->bUseThread==0) /* b */ + )); + rc = vdbePmaReaderIncrInit(p, INCRINIT_TASK); + } + } + pMain = 0; + } + if( rc==SQLITE_OK ){ + rc = vdbePmaReaderIncrMergeInit(pReadr, INCRINIT_ROOT); + } + }else +#endif + { + rc = vdbeMergeEngineInit(pTask0, pMain, INCRINIT_NORMAL); + pSorter->pMerger = pMain; + pMain = 0; + } + } + + if( rc!=SQLITE_OK ){ + vdbeMergeEngineFree(pMain); + } + return rc; +} + + +/* +** Once the sorter has been populated by calls to sqlite3VdbeSorterWrite, +** this function is called to prepare for iterating through the records +** in sorted order. +*/ +SQLITE_PRIVATE int sqlite3VdbeSorterRewind(const VdbeCursor *pCsr, int *pbEof){ + VdbeSorter *pSorter; + int rc = SQLITE_OK; /* Return code */ + + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; assert( pSorter ); /* If no data has been written to disk, then do not do so now. Instead, ** sort the VdbeSorter.pRecord list. The vdbe layer will read data directly ** from the in-memory list. */ - if( pSorter->nPMA==0 ){ - *pbEof = !pSorter->pRecord; - assert( pSorter->aTree==0 ); - return vdbeSorterSort(pCsr); - } - - /* Write the current in-memory list to a PMA. */ - rc = vdbeSorterListToPMA(db, pCsr); - if( rc!=SQLITE_OK ) return rc; - - /* Allocate space for aIter[] and aTree[]. */ - nIter = pSorter->nPMA; - if( nIter>SORTER_MAX_MERGE_COUNT ) nIter = SORTER_MAX_MERGE_COUNT; - assert( nIter>0 ); - while( NaIter = (VdbeSorterIter *)sqlite3DbMallocZero(db, nByte); - if( !pSorter->aIter ) return SQLITE_NOMEM; - pSorter->aTree = (int *)&pSorter->aIter[N]; - pSorter->nTree = N; - - do { - int iNew; /* Index of new, merged, PMA */ - - for(iNew=0; - rc==SQLITE_OK && iNew*SORTER_MAX_MERGE_COUNTnPMA; - iNew++ - ){ - int rc2; /* Return code from fileWriterFinish() */ - FileWriter writer; /* Object used to write to disk */ - i64 nWrite; /* Number of bytes in new PMA */ - - memset(&writer, 0, sizeof(FileWriter)); - - /* If there are SORTER_MAX_MERGE_COUNT or less PMAs in file pTemp1, - ** initialize an iterator for each of them and break out of the loop. - ** These iterators will be incrementally merged as the VDBE layer calls - ** sqlite3VdbeSorterNext(). - ** - ** Otherwise, if pTemp1 contains more than SORTER_MAX_MERGE_COUNT PMAs, - ** initialize interators for SORTER_MAX_MERGE_COUNT of them. These PMAs - ** are merged into a single PMA that is written to file pTemp2. - */ - rc = vdbeSorterInitMerge(db, pCsr, &nWrite); - assert( rc!=SQLITE_OK || pSorter->aIter[ pSorter->aTree[1] ].pFile ); - if( rc!=SQLITE_OK || pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){ - break; - } - - /* Open the second temp file, if it is not already open. */ - if( pTemp2==0 ){ - assert( iWrite2==0 ); - rc = vdbeSorterOpenTempFile(db, &pTemp2); - } - - if( rc==SQLITE_OK ){ - int bEof = 0; - fileWriterInit(db, pTemp2, &writer, iWrite2); - fileWriterWriteVarint(&writer, nWrite); - while( rc==SQLITE_OK && bEof==0 ){ - VdbeSorterIter *pIter = &pSorter->aIter[ pSorter->aTree[1] ]; - assert( pIter->pFile ); - - fileWriterWriteVarint(&writer, pIter->nKey); - fileWriterWrite(&writer, pIter->aKey, pIter->nKey); - rc = sqlite3VdbeSorterNext(db, pCsr, &bEof); - } - rc2 = fileWriterFinish(db, &writer, &iWrite2); - if( rc==SQLITE_OK ) rc = rc2; - } - } - - if( pSorter->nPMA<=SORTER_MAX_MERGE_COUNT ){ - break; + if( pSorter->bUsePMA==0 ){ + if( pSorter->list.pList ){ + *pbEof = 0; + rc = vdbeSorterSort(&pSorter->aTask[0], &pSorter->list); }else{ - sqlite3_file *pTmp = pSorter->pTemp1; - pSorter->nPMA = iNew; - pSorter->pTemp1 = pTemp2; - pTemp2 = pTmp; - pSorter->iWriteOff = iWrite2; - pSorter->iReadOff = 0; - iWrite2 = 0; + *pbEof = 1; } - }while( rc==SQLITE_OK ); - - if( pTemp2 ){ - sqlite3OsCloseFree(pTemp2); + return rc; } - *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0); + + /* Write the current in-memory list to a PMA. When the VdbeSorterWrite() + ** function flushes the contents of memory to disk, it immediately always + ** creates a new list consisting of a single key immediately afterwards. + ** So the list is never empty at this point. */ + assert( pSorter->list.pList ); + rc = vdbeSorterFlushPMA(pSorter); + + /* Join all threads */ + rc = vdbeSorterJoinAll(pSorter, rc); + + vdbeSorterRewindDebug("rewind"); + + /* Assuming no errors have occurred, set up a merger structure to + ** incrementally read and merge all remaining PMAs. */ + assert( pSorter->pReader==0 ); + if( rc==SQLITE_OK ){ + rc = vdbeSorterSetupMerge(pSorter); + *pbEof = 0; + } + + vdbeSorterRewindDebug("rewinddone"); return rc; } @@ -74221,25 +88240,33 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRewind(sqlite3 *db, const VdbeCursor *pCsr, ** Advance to the next element in the sorter. */ SQLITE_PRIVATE int sqlite3VdbeSorterNext(sqlite3 *db, const VdbeCursor *pCsr, int *pbEof){ - VdbeSorter *pSorter = pCsr->pSorter; + VdbeSorter *pSorter; int rc; /* Return code */ - if( pSorter->aTree ){ - int iPrev = pSorter->aTree[1];/* Index of iterator to advance */ - int i; /* Index of aTree[] to recalculate */ - - rc = vdbeSorterIterNext(db, &pSorter->aIter[iPrev]); - for(i=(pSorter->nTree+iPrev)/2; rc==SQLITE_OK && i>0; i=i/2){ - rc = vdbeSorterDoCompare(pCsr, i); + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; + assert( pSorter->bUsePMA || (pSorter->pReader==0 && pSorter->pMerger==0) ); + if( pSorter->bUsePMA ){ + assert( pSorter->pReader==0 || pSorter->pMerger==0 ); + assert( pSorter->bUseThreads==0 || pSorter->pReader ); + assert( pSorter->bUseThreads==1 || pSorter->pMerger ); +#if SQLITE_MAX_WORKER_THREADS>0 + if( pSorter->bUseThreads ){ + rc = vdbePmaReaderNext(pSorter->pReader); + *pbEof = (pSorter->pReader->pFd==0); + }else +#endif + /*if( !pSorter->bUseThreads )*/ { + assert( pSorter->pMerger!=0 ); + assert( pSorter->pMerger->pTask==(&pSorter->aTask[0]) ); + rc = vdbeMergeEngineStep(pSorter->pMerger, pbEof); } - - *pbEof = (pSorter->aIter[pSorter->aTree[1]].pFile==0); }else{ - SorterRecord *pFree = pSorter->pRecord; - pSorter->pRecord = pFree->pNext; - pFree->pNext = 0; - vdbeSorterRecordFree(db, pFree); - *pbEof = !pSorter->pRecord; + SorterRecord *pFree = pSorter->list.pList; + pSorter->list.pList = pFree->u.pNext; + pFree->u.pNext = 0; + if( pSorter->list.aMemory==0 ) vdbeSorterRecordFree(db, pFree); + *pbEof = !pSorter->list.pList; rc = SQLITE_OK; } return rc; @@ -74254,14 +88281,21 @@ static void *vdbeSorterRowkey( int *pnKey /* OUT: Size of current key in bytes */ ){ void *pKey; - if( pSorter->aTree ){ - VdbeSorterIter *pIter; - pIter = &pSorter->aIter[ pSorter->aTree[1] ]; - *pnKey = pIter->nKey; - pKey = pIter->aKey; + if( pSorter->bUsePMA ){ + PmaReader *pReader; +#if SQLITE_MAX_WORKER_THREADS>0 + if( pSorter->bUseThreads ){ + pReader = pSorter->pReader; + }else +#endif + /*if( !pSorter->bUseThreads )*/{ + pReader = &pSorter->pMerger->aReadr[pSorter->pMerger->aTree[1]]; + } + *pnKey = pReader->nKey; + pKey = pReader->aKey; }else{ - *pnKey = pSorter->pRecord->nVal; - pKey = pSorter->pRecord->pVal; + *pnKey = pSorter->list.pList->nVal; + pKey = SRVAL(pSorter->list.pList); } return pKey; } @@ -74270,12 +88304,14 @@ static void *vdbeSorterRowkey( ** Copy the current sorter key into the memory cell pOut. */ SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(const VdbeCursor *pCsr, Mem *pOut){ - VdbeSorter *pSorter = pCsr->pSorter; + VdbeSorter *pSorter; void *pKey; int nKey; /* Sorter key to copy into pOut */ + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; pKey = vdbeSorterRowkey(pSorter, &nKey); - if( sqlite3VdbeMemGrow(pOut, nKey, 0) ){ - return SQLITE_NOMEM; + if( sqlite3VdbeMemClearAndResize(pOut, nKey) ){ + return SQLITE_NOMEM_BKPT; } pOut->n = nKey; MemSetTypeFlag(pOut, MEM_Blob); @@ -74289,284 +88325,54 @@ SQLITE_PRIVATE int sqlite3VdbeSorterRowkey(const VdbeCursor *pCsr, Mem *pOut){ ** passed as the first argument currently points to. For the purposes of ** the comparison, ignore the rowid field at the end of each record. ** +** If the sorter cursor key contains any NULL values, consider it to be +** less than pVal. Even if pVal also contains NULL values. +** ** If an error occurs, return an SQLite error code (i.e. SQLITE_NOMEM). ** Otherwise, set *pRes to a negative, zero or positive value if the ** key in pVal is smaller than, equal to or larger than the current sorter ** key. +** +** This routine forms the core of the OP_SorterCompare opcode, which in +** turn is used to verify uniqueness when constructing a UNIQUE INDEX. */ SQLITE_PRIVATE int sqlite3VdbeSorterCompare( const VdbeCursor *pCsr, /* Sorter cursor */ Mem *pVal, /* Value to compare to current sorter key */ - int nIgnore, /* Ignore this many fields at the end */ + int nKeyCol, /* Compare this many columns */ int *pRes /* OUT: Result of comparison */ ){ - VdbeSorter *pSorter = pCsr->pSorter; + VdbeSorter *pSorter; + UnpackedRecord *r2; + KeyInfo *pKeyInfo; + int i; void *pKey; int nKey; /* Sorter key to compare pVal with */ + assert( pCsr->eCurType==CURTYPE_SORTER ); + pSorter = pCsr->uc.pSorter; + r2 = pSorter->pUnpacked; + pKeyInfo = pCsr->pKeyInfo; + if( r2==0 ){ + r2 = pSorter->pUnpacked = sqlite3VdbeAllocUnpackedRecord(pKeyInfo); + if( r2==0 ) return SQLITE_NOMEM_BKPT; + r2->nField = nKeyCol; + } + assert( r2->nField==nKeyCol ); + pKey = vdbeSorterRowkey(pSorter, &nKey); - vdbeSorterCompare(pCsr, nIgnore, pVal->z, pVal->n, pKey, nKey, pRes); + sqlite3VdbeRecordUnpack(pKeyInfo, nKey, pKey, r2); + for(i=0; iaMem[i].flags & MEM_Null ){ + *pRes = -1; + return SQLITE_OK; + } + } + + *pRes = sqlite3VdbeRecordCompare(pVal->n, pVal->z, r2); return SQLITE_OK; } /************** End of vdbesort.c ********************************************/ -/************** Begin file journal.c *****************************************/ -/* -** 2007 August 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file implements a special kind of sqlite3_file object used -** by SQLite to create journal files if the atomic-write optimization -** is enabled. -** -** The distinctive characteristic of this sqlite3_file is that the -** actual on disk file is created lazily. When the file is created, -** the caller specifies a buffer size for an in-memory buffer to -** be used to service read() and write() requests. The actual file -** on disk is not created or populated until either: -** -** 1) The in-memory representation grows too large for the allocated -** buffer, or -** 2) The sqlite3JournalCreate() function is called. -*/ -#ifdef SQLITE_ENABLE_ATOMIC_WRITE - - -/* -** A JournalFile object is a subclass of sqlite3_file used by -** as an open file handle for journal files. -*/ -struct JournalFile { - sqlite3_io_methods *pMethod; /* I/O methods on journal files */ - int nBuf; /* Size of zBuf[] in bytes */ - char *zBuf; /* Space to buffer journal writes */ - int iSize; /* Amount of zBuf[] currently used */ - int flags; /* xOpen flags */ - sqlite3_vfs *pVfs; /* The "real" underlying VFS */ - sqlite3_file *pReal; /* The "real" underlying file descriptor */ - const char *zJournal; /* Name of the journal file */ -}; -typedef struct JournalFile JournalFile; - -/* -** If it does not already exists, create and populate the on-disk file -** for JournalFile p. -*/ -static int createFile(JournalFile *p){ - int rc = SQLITE_OK; - if( !p->pReal ){ - sqlite3_file *pReal = (sqlite3_file *)&p[1]; - rc = sqlite3OsOpen(p->pVfs, p->zJournal, pReal, p->flags, 0); - if( rc==SQLITE_OK ){ - p->pReal = pReal; - if( p->iSize>0 ){ - assert(p->iSize<=p->nBuf); - rc = sqlite3OsWrite(p->pReal, p->zBuf, p->iSize, 0); - } - if( rc!=SQLITE_OK ){ - /* If an error occurred while writing to the file, close it before - ** returning. This way, SQLite uses the in-memory journal data to - ** roll back changes made to the internal page-cache before this - ** function was called. */ - sqlite3OsClose(pReal); - p->pReal = 0; - } - } - } - return rc; -} - -/* -** Close the file. -*/ -static int jrnlClose(sqlite3_file *pJfd){ - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - sqlite3OsClose(p->pReal); - } - sqlite3_free(p->zBuf); - return SQLITE_OK; -} - -/* -** Read data from the file. -*/ -static int jrnlRead( - sqlite3_file *pJfd, /* The journal file from which to read */ - void *zBuf, /* Put the results here */ - int iAmt, /* Number of bytes to read */ - sqlite_int64 iOfst /* Begin reading at this offset */ -){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsRead(p->pReal, zBuf, iAmt, iOfst); - }else if( (iAmt+iOfst)>p->iSize ){ - rc = SQLITE_IOERR_SHORT_READ; - }else{ - memcpy(zBuf, &p->zBuf[iOfst], iAmt); - } - return rc; -} - -/* -** Write data to the file. -*/ -static int jrnlWrite( - sqlite3_file *pJfd, /* The journal file into which to write */ - const void *zBuf, /* Take data to be written from here */ - int iAmt, /* Number of bytes to write */ - sqlite_int64 iOfst /* Begin writing at this offset into the file */ -){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( !p->pReal && (iOfst+iAmt)>p->nBuf ){ - rc = createFile(p); - } - if( rc==SQLITE_OK ){ - if( p->pReal ){ - rc = sqlite3OsWrite(p->pReal, zBuf, iAmt, iOfst); - }else{ - memcpy(&p->zBuf[iOfst], zBuf, iAmt); - if( p->iSize<(iOfst+iAmt) ){ - p->iSize = (iOfst+iAmt); - } - } - } - return rc; -} - -/* -** Truncate the file. -*/ -static int jrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsTruncate(p->pReal, size); - }else if( sizeiSize ){ - p->iSize = size; - } - return rc; -} - -/* -** Sync the file. -*/ -static int jrnlSync(sqlite3_file *pJfd, int flags){ - int rc; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsSync(p->pReal, flags); - }else{ - rc = SQLITE_OK; - } - return rc; -} - -/* -** Query the size of the file in bytes. -*/ -static int jrnlFileSize(sqlite3_file *pJfd, sqlite_int64 *pSize){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsFileSize(p->pReal, pSize); - }else{ - *pSize = (sqlite_int64) p->iSize; - } - return rc; -} - -/* -** Table of methods for JournalFile sqlite3_file object. -*/ -static struct sqlite3_io_methods JournalFileMethods = { - 1, /* iVersion */ - jrnlClose, /* xClose */ - jrnlRead, /* xRead */ - jrnlWrite, /* xWrite */ - jrnlTruncate, /* xTruncate */ - jrnlSync, /* xSync */ - jrnlFileSize, /* xFileSize */ - 0, /* xLock */ - 0, /* xUnlock */ - 0, /* xCheckReservedLock */ - 0, /* xFileControl */ - 0, /* xSectorSize */ - 0, /* xDeviceCharacteristics */ - 0, /* xShmMap */ - 0, /* xShmLock */ - 0, /* xShmBarrier */ - 0 /* xShmUnmap */ -}; - -/* -** Open a journal file. -*/ -SQLITE_PRIVATE int sqlite3JournalOpen( - sqlite3_vfs *pVfs, /* The VFS to use for actual file I/O */ - const char *zName, /* Name of the journal file */ - sqlite3_file *pJfd, /* Preallocated, blank file handle */ - int flags, /* Opening flags */ - int nBuf /* Bytes buffered before opening the file */ -){ - JournalFile *p = (JournalFile *)pJfd; - memset(p, 0, sqlite3JournalSize(pVfs)); - if( nBuf>0 ){ - p->zBuf = sqlite3MallocZero(nBuf); - if( !p->zBuf ){ - return SQLITE_NOMEM; - } - }else{ - return sqlite3OsOpen(pVfs, zName, pJfd, flags, 0); - } - p->pMethod = &JournalFileMethods; - p->nBuf = nBuf; - p->flags = flags; - p->zJournal = zName; - p->pVfs = pVfs; - return SQLITE_OK; -} - -/* -** If the argument p points to a JournalFile structure, and the underlying -** file has not yet been created, create it now. -*/ -SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *p){ - if( p->pMethods!=&JournalFileMethods ){ - return SQLITE_OK; - } - return createFile((JournalFile *)p); -} - -/* -** The file-handle passed as the only argument is guaranteed to be an open -** file. It may or may not be of class JournalFile. If the file is a -** JournalFile, and the underlying file on disk has not yet been opened, -** return 0. Otherwise, return 1. -*/ -SQLITE_PRIVATE int sqlite3JournalExists(sqlite3_file *p){ - return (p->pMethods!=&JournalFileMethods || ((JournalFile *)p)->pReal!=0); -} - -/* -** Return the number of bytes required to store a JournalFile that uses vfs -** pVfs to create the underlying on-disk files. -*/ -SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *pVfs){ - return (pVfs->szOsFile+sizeof(JournalFile)); -} -#endif - -/************** End of journal.c *********************************************/ /************** Begin file memjournal.c **************************************/ /* ** 2008 October 7 @@ -74583,31 +88389,45 @@ SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *pVfs){ ** This file contains code use to implement an in-memory rollback journal. ** The in-memory rollback journal is used to journal transactions for ** ":memory:" databases and when the journal_mode=MEMORY pragma is used. +** +** Update: The in-memory journal is also used to temporarily cache +** smaller journals that are not critical for power-loss recovery. +** For example, statement journals that are not too big will be held +** entirely in memory, thus reducing the number of file I/O calls, and +** more importantly, reducing temporary file creation events. If these +** journals become too large for memory, they are spilled to disk. But +** in the common case, they are usually small and no file I/O needs to +** occur. */ +/* #include "sqliteInt.h" */ /* Forward references to internal structures */ typedef struct MemJournal MemJournal; typedef struct FilePoint FilePoint; typedef struct FileChunk FileChunk; -/* Space to hold the rollback journal is allocated in increments of -** this many bytes. -** -** The size chosen is a little less than a power of two. That way, -** the FileChunk object will have a size that almost exactly fills -** a power-of-two allocation. This mimimizes wasted space in power-of-two -** memory allocators. -*/ -#define JOURNAL_CHUNKSIZE ((int)(1024-sizeof(FileChunk*))) - /* ** The rollback journal is composed of a linked list of these structures. +** +** The zChunk array is always at least 8 bytes in size - usually much more. +** Its actual size is stored in the MemJournal.nChunkSize variable. */ struct FileChunk { FileChunk *pNext; /* Next chunk in the journal */ - u8 zChunk[JOURNAL_CHUNKSIZE]; /* Content of this chunk */ + u8 zChunk[8]; /* Content of this chunk */ }; +/* +** By default, allocate this many bytes of memory for each FileChunk object. +*/ +#define MEMJOURNAL_DFLT_FILECHUNKSIZE 1024 + +/* +** For chunk size nChunkSize, return the number of bytes that should +** be allocated for each FileChunk structure. +*/ +#define fileChunkSize(nChunkSize) (sizeof(FileChunk) + ((nChunkSize)-8)) + /* ** An instance of this object serves as a cursor into the rollback journal. ** The cursor can be either for reading or writing. @@ -74618,14 +88438,22 @@ struct FilePoint { }; /* -** This subclass is a subclass of sqlite3_file. Each open memory-journal +** This structure is a subclass of sqlite3_file. Each open memory-journal ** is an instance of this class. */ struct MemJournal { - sqlite3_io_methods *pMethod; /* Parent class. MUST BE FIRST */ + const sqlite3_io_methods *pMethod; /* Parent class. MUST BE FIRST */ + int nChunkSize; /* In-memory chunk-size */ + + int nSpill; /* Bytes of data before flushing */ + int nSize; /* Bytes of data currently in memory */ FileChunk *pFirst; /* Head of in-memory chunk-list */ FilePoint endpoint; /* Pointer to the end of the file */ FilePoint readpoint; /* Pointer to the end of the last xRead() */ + + int flags; /* xOpen flags */ + sqlite3_vfs *pVfs; /* The "real" underlying VFS */ + const char *zJournal; /* Name of the journal file */ }; /* @@ -74644,36 +88472,94 @@ static int memjrnlRead( int iChunkOffset; FileChunk *pChunk; - /* SQLite never tries to read past the end of a rollback journal file */ - assert( iOfst+iAmt<=p->endpoint.iOffset ); +#ifdef SQLITE_ENABLE_ATOMIC_WRITE + if( (iAmt+iOfst)>p->endpoint.iOffset ){ + return SQLITE_IOERR_SHORT_READ; + } +#endif + assert( (iAmt+iOfst)<=p->endpoint.iOffset ); + assert( p->readpoint.iOffset==0 || p->readpoint.pChunk!=0 ); if( p->readpoint.iOffset!=iOfst || iOfst==0 ){ sqlite3_int64 iOff = 0; for(pChunk=p->pFirst; - ALWAYS(pChunk) && (iOff+JOURNAL_CHUNKSIZE)<=iOfst; + ALWAYS(pChunk) && (iOff+p->nChunkSize)<=iOfst; pChunk=pChunk->pNext ){ - iOff += JOURNAL_CHUNKSIZE; + iOff += p->nChunkSize; } }else{ pChunk = p->readpoint.pChunk; + assert( pChunk!=0 ); } - iChunkOffset = (int)(iOfst%JOURNAL_CHUNKSIZE); + iChunkOffset = (int)(iOfst%p->nChunkSize); do { - int iSpace = JOURNAL_CHUNKSIZE - iChunkOffset; - int nCopy = MIN(nRead, (JOURNAL_CHUNKSIZE - iChunkOffset)); - memcpy(zOut, &pChunk->zChunk[iChunkOffset], nCopy); + int iSpace = p->nChunkSize - iChunkOffset; + int nCopy = MIN(nRead, (p->nChunkSize - iChunkOffset)); + memcpy(zOut, (u8*)pChunk->zChunk + iChunkOffset, nCopy); zOut += nCopy; nRead -= iSpace; iChunkOffset = 0; } while( nRead>=0 && (pChunk=pChunk->pNext)!=0 && nRead>0 ); - p->readpoint.iOffset = iOfst+iAmt; + p->readpoint.iOffset = pChunk ? iOfst+iAmt : 0; p->readpoint.pChunk = pChunk; return SQLITE_OK; } +/* +** Free the list of FileChunk structures headed at MemJournal.pFirst. +*/ +static void memjrnlFreeChunks(MemJournal *p){ + FileChunk *pIter; + FileChunk *pNext; + for(pIter=p->pFirst; pIter; pIter=pNext){ + pNext = pIter->pNext; + sqlite3_free(pIter); + } + p->pFirst = 0; +} + +/* +** Flush the contents of memory to a real file on disk. +*/ +static int memjrnlCreateFile(MemJournal *p){ + int rc; + sqlite3_file *pReal = (sqlite3_file*)p; + MemJournal copy = *p; + + memset(p, 0, sizeof(MemJournal)); + rc = sqlite3OsOpen(copy.pVfs, copy.zJournal, pReal, copy.flags, 0); + if( rc==SQLITE_OK ){ + int nChunk = copy.nChunkSize; + i64 iOff = 0; + FileChunk *pIter; + for(pIter=copy.pFirst; pIter; pIter=pIter->pNext){ + if( iOff + nChunk > copy.endpoint.iOffset ){ + nChunk = copy.endpoint.iOffset - iOff; + } + rc = sqlite3OsWrite(pReal, (u8*)pIter->zChunk, nChunk, iOff); + if( rc ) break; + iOff += nChunk; + } + if( rc==SQLITE_OK ){ + /* No error has occurred. Free the in-memory buffers. */ + memjrnlFreeChunks(©); + } + } + if( rc!=SQLITE_OK ){ + /* If an error occurred while creating or writing to the file, restore + ** the original before returning. This way, SQLite uses the in-memory + ** journal data to roll back changes made to the internal page-cache + ** before this function was called. */ + sqlite3OsClose(pReal); + *p = copy; + } + return rc; +} + + /* ** Write data to the file. */ @@ -74687,38 +88573,62 @@ static int memjrnlWrite( int nWrite = iAmt; u8 *zWrite = (u8 *)zBuf; - /* An in-memory journal file should only ever be appended to. Random - ** access writes are not required by sqlite. - */ - assert( iOfst==p->endpoint.iOffset ); - UNUSED_PARAMETER(iOfst); - - while( nWrite>0 ){ - FileChunk *pChunk = p->endpoint.pChunk; - int iChunkOffset = (int)(p->endpoint.iOffset%JOURNAL_CHUNKSIZE); - int iSpace = MIN(nWrite, JOURNAL_CHUNKSIZE - iChunkOffset); - - if( iChunkOffset==0 ){ - /* New chunk is required to extend the file. */ - FileChunk *pNew = sqlite3_malloc(sizeof(FileChunk)); - if( !pNew ){ - return SQLITE_IOERR_NOMEM; - } - pNew->pNext = 0; - if( pChunk ){ - assert( p->pFirst ); - pChunk->pNext = pNew; - }else{ - assert( !p->pFirst ); - p->pFirst = pNew; - } - p->endpoint.pChunk = pNew; + /* If the file should be created now, create it and write the new data + ** into the file on disk. */ + if( p->nSpill>0 && (iAmt+iOfst)>p->nSpill ){ + int rc = memjrnlCreateFile(p); + if( rc==SQLITE_OK ){ + rc = sqlite3OsWrite(pJfd, zBuf, iAmt, iOfst); } + return rc; + } - memcpy(&p->endpoint.pChunk->zChunk[iChunkOffset], zWrite, iSpace); - zWrite += iSpace; - nWrite -= iSpace; - p->endpoint.iOffset += iSpace; + /* If the contents of this write should be stored in memory */ + else{ + /* An in-memory journal file should only ever be appended to. Random + ** access writes are not required. The only exception to this is when + ** the in-memory journal is being used by a connection using the + ** atomic-write optimization. In this case the first 28 bytes of the + ** journal file may be written as part of committing the transaction. */ + assert( iOfst==p->endpoint.iOffset || iOfst==0 ); +#ifdef SQLITE_ENABLE_ATOMIC_WRITE + if( iOfst==0 && p->pFirst ){ + assert( p->nChunkSize>iAmt ); + memcpy((u8*)p->pFirst->zChunk, zBuf, iAmt); + }else +#else + assert( iOfst>0 || p->pFirst==0 ); +#endif + { + while( nWrite>0 ){ + FileChunk *pChunk = p->endpoint.pChunk; + int iChunkOffset = (int)(p->endpoint.iOffset%p->nChunkSize); + int iSpace = MIN(nWrite, p->nChunkSize - iChunkOffset); + + if( iChunkOffset==0 ){ + /* New chunk is required to extend the file. */ + FileChunk *pNew = sqlite3_malloc(fileChunkSize(p->nChunkSize)); + if( !pNew ){ + return SQLITE_IOERR_NOMEM_BKPT; + } + pNew->pNext = 0; + if( pChunk ){ + assert( p->pFirst ); + pChunk->pNext = pNew; + }else{ + assert( !p->pFirst ); + p->pFirst = pNew; + } + p->endpoint.pChunk = pNew; + } + + memcpy((u8*)p->endpoint.pChunk->zChunk + iChunkOffset, zWrite, iSpace); + zWrite += iSpace; + nWrite -= iSpace; + p->endpoint.iOffset += iSpace; + } + p->nSize = iAmt + iOfst; + } } return SQLITE_OK; @@ -74726,19 +88636,21 @@ static int memjrnlWrite( /* ** Truncate the file. +** +** If the journal file is already on disk, truncate it there. Or, if it +** is still in main memory but is being truncated to zero bytes in size, +** ignore */ static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ MemJournal *p = (MemJournal *)pJfd; - FileChunk *pChunk; - assert(size==0); - UNUSED_PARAMETER(size); - pChunk = p->pFirst; - while( pChunk ){ - FileChunk *pTmp = pChunk; - pChunk = pChunk->pNext; - sqlite3_free(pTmp); + if( ALWAYS(size==0) ){ + memjrnlFreeChunks(p); + p->nSize = 0; + p->endpoint.pChunk = 0; + p->endpoint.iOffset = 0; + p->readpoint.pChunk = 0; + p->readpoint.iOffset = 0; } - sqlite3MemJournalOpen(pJfd); return SQLITE_OK; } @@ -74746,21 +88658,19 @@ static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ ** Close the file. */ static int memjrnlClose(sqlite3_file *pJfd){ - memjrnlTruncate(pJfd, 0); + MemJournal *p = (MemJournal *)pJfd; + memjrnlFreeChunks(p); return SQLITE_OK; } - /* ** Sync the file. ** -** Syncing an in-memory journal is a no-op. And, in fact, this routine -** is never called in a working implementation. This implementation -** exists purely as a contingency, in case some malfunction in some other -** part of SQLite causes Sync to be called by mistake. +** If the real file has been created, call its xSync method. Otherwise, +** syncing an in-memory journal is a no-op. */ -static int memjrnlSync(sqlite3_file *NotUsed, int NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); +static int memjrnlSync(sqlite3_file *pJfd, int flags){ + UNUSED_PARAMETER2(pJfd, flags); return SQLITE_OK; } @@ -74799,28 +88709,88 @@ static const struct sqlite3_io_methods MemJournalMethods = { }; /* -** Open a journal file. +** Open a journal file. +** +** The behaviour of the journal file depends on the value of parameter +** nSpill. If nSpill is 0, then the journal file is always create and +** accessed using the underlying VFS. If nSpill is less than zero, then +** all content is always stored in main-memory. Finally, if nSpill is a +** positive value, then the journal file is initially created in-memory +** but may be flushed to disk later on. In this case the journal file is +** flushed to disk either when it grows larger than nSpill bytes in size, +** or when sqlite3JournalCreate() is called. */ -SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *pJfd){ - MemJournal *p = (MemJournal *)pJfd; - assert( EIGHT_BYTE_ALIGNMENT(p) ); - memset(p, 0, sqlite3MemJournalSize()); - p->pMethod = (sqlite3_io_methods*)&MemJournalMethods; +SQLITE_PRIVATE int sqlite3JournalOpen( + sqlite3_vfs *pVfs, /* The VFS to use for actual file I/O */ + const char *zName, /* Name of the journal file */ + sqlite3_file *pJfd, /* Preallocated, blank file handle */ + int flags, /* Opening flags */ + int nSpill /* Bytes buffered before opening the file */ +){ + MemJournal *p = (MemJournal*)pJfd; + + /* Zero the file-handle object. If nSpill was passed zero, initialize + ** it using the sqlite3OsOpen() function of the underlying VFS. In this + ** case none of the code in this module is executed as a result of calls + ** made on the journal file-handle. */ + memset(p, 0, sizeof(MemJournal)); + if( nSpill==0 ){ + return sqlite3OsOpen(pVfs, zName, pJfd, flags, 0); + } + + if( nSpill>0 ){ + p->nChunkSize = nSpill; + }else{ + p->nChunkSize = 8 + MEMJOURNAL_DFLT_FILECHUNKSIZE - sizeof(FileChunk); + assert( MEMJOURNAL_DFLT_FILECHUNKSIZE==fileChunkSize(p->nChunkSize) ); + } + + p->pMethod = (const sqlite3_io_methods*)&MemJournalMethods; + p->nSpill = nSpill; + p->flags = flags; + p->zJournal = zName; + p->pVfs = pVfs; + return SQLITE_OK; } /* -** Return true if the file-handle passed as an argument is -** an in-memory journal +** Open an in-memory journal file. */ -SQLITE_PRIVATE int sqlite3IsMemJournal(sqlite3_file *pJfd){ - return pJfd->pMethods==&MemJournalMethods; +SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *pJfd){ + sqlite3JournalOpen(0, 0, pJfd, 0, -1); +} + +#ifdef SQLITE_ENABLE_ATOMIC_WRITE +/* +** If the argument p points to a MemJournal structure that is not an +** in-memory-only journal file (i.e. is one that was opened with a +ve +** nSpill parameter), and the underlying file has not yet been created, +** create it now. +*/ +SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *p){ + int rc = SQLITE_OK; + if( p->pMethods==&MemJournalMethods && ((MemJournal*)p)->nSpill>0 ){ + rc = memjrnlCreateFile((MemJournal*)p); + } + return rc; +} +#endif + +/* +** The file-handle passed as the only argument is open on a journal file. +** Return true if this "journal file" is currently stored in heap memory, +** or false otherwise. +*/ +SQLITE_PRIVATE int sqlite3JournalIsInMemory(sqlite3_file *p){ + return p->pMethods==&MemJournalMethods; } /* -** Return the number of bytes required to store a MemJournal file descriptor. +** Return the number of bytes required to store a JournalFile that uses vfs +** pVfs to create the underlying on-disk files. */ -SQLITE_PRIVATE int sqlite3MemJournalSize(void){ - return sizeof(MemJournal); +SQLITE_PRIVATE int sqlite3JournalSize(sqlite3_vfs *pVfs){ + return MAX(pVfs->szOsFile, (int)sizeof(MemJournal)); } /************** End of memjournal.c ******************************************/ @@ -74839,13 +88809,14 @@ SQLITE_PRIVATE int sqlite3MemJournalSize(void){ ** This file contains routines used for walking the parser tree for ** an SQL statement. */ +/* #include "sqliteInt.h" */ /* #include */ /* #include */ /* ** Walk an expression tree. Invoke the callback once for each node -** of the expression, while decending. (In other words, the callback +** of the expression, while descending. (In other words, the callback ** is invoked before visiting children.) ** ** The return value from the callback should be one of the WRC_* @@ -74862,23 +88833,25 @@ SQLITE_PRIVATE int sqlite3MemJournalSize(void){ ** The return value from this routine is WRC_Abort to abandon the tree walk ** and WRC_Continue to continue. */ -SQLITE_PRIVATE int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){ +static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){ int rc; - if( pExpr==0 ) return WRC_Continue; testcase( ExprHasProperty(pExpr, EP_TokenOnly) ); testcase( ExprHasProperty(pExpr, EP_Reduced) ); rc = pWalker->xExprCallback(pWalker, pExpr); - if( rc==WRC_Continue - && !ExprHasProperty(pExpr,EP_TokenOnly) ){ - if( sqlite3WalkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort; - if( sqlite3WalkExpr(pWalker, pExpr->pRight) ) return WRC_Abort; - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort; - }else{ - if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort; - } + if( rc || ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){ + return rc & WRC_Abort; } - return rc & WRC_Abort; + if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort; + if( pExpr->pRight && walkExpr(pWalker, pExpr->pRight) ) return WRC_Abort; + if( ExprHasProperty(pExpr, EP_xIsSelect) ){ + if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort; + }else if( pExpr->x.pList ){ + if( sqlite3WalkExprList(pWalker, pExpr->x.pList) ) return WRC_Abort; + } + return WRC_Continue; +} +SQLITE_PRIVATE int sqlite3WalkExpr(Walker *pWalker, Expr *pExpr){ + return pExpr ? walkExpr(pWalker,pExpr) : WRC_Continue; } /* @@ -74931,6 +88904,11 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){ if( sqlite3WalkSelect(pWalker, pItem->pSelect) ){ return WRC_Abort; } + if( pItem->fg.isTabFunc + && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg) + ){ + return WRC_Abort; + } } } return WRC_Continue; @@ -74997,8 +88975,7 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){ ** resolve all identifiers by associating them with a particular ** table and column. */ -/* #include */ -/* #include */ +/* #include "sqliteInt.h" */ /* ** Walk the expression tree pExpr and increase the aggregate function @@ -75010,7 +88987,7 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){ ** is a helper function - a callback for the tree walker. */ static int incrAggDepth(Walker *pWalker, Expr *pExpr){ - if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.i; + if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.n; return WRC_Continue; } static void incrAggFunctionDepth(Expr *pExpr, int N){ @@ -75018,7 +88995,7 @@ static void incrAggFunctionDepth(Expr *pExpr, int N){ Walker w; memset(&w, 0, sizeof(w)); w.xExprCallback = incrAggDepth; - w.u.i = N; + w.u.n = N; sqlite3WalkExpr(&w, pExpr); } } @@ -75027,30 +89004,6 @@ static void incrAggFunctionDepth(Expr *pExpr, int N){ ** Turn the pExpr expression into an alias for the iCol-th column of the ** result set in pEList. ** -** If the result set column is a simple column reference, then this routine -** makes an exact copy. But for any other kind of expression, this -** routine make a copy of the result set column as the argument to the -** TK_AS operator. The TK_AS operator causes the expression to be -** evaluated just once and then reused for each alias. -** -** The reason for suppressing the TK_AS term when the expression is a simple -** column reference is so that the column reference will be recognized as -** usable by indices within the WHERE clause processing logic. -** -** The TK_AS operator is inhibited if zType[0]=='G'. This means -** that in a GROUP BY clause, the expression is evaluated twice. Hence: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY x -** -** Is equivalent to: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY random()%5 -** -** The result of random()%5 in the GROUP BY clause is probably different -** from the result in the result-set. On the other hand Standard SQL does -** not allow the GROUP BY clause to contain references to result-set columns. -** So this should never come up in well-formed queries. -** ** If the reference is followed by a COLLATE operator, then make sure ** the COLLATE operator is preserved. For example: ** @@ -75061,7 +89014,7 @@ static void incrAggFunctionDepth(Expr *pExpr, int N){ ** SELECT a+b, c+d FROM t1 ORDER BY (a+b) COLLATE nocase; ** ** The nSubquery parameter specifies how many levels of subquery the -** alias is removed from the original expression. The usually value is +** alias is removed from the original expression. The usual value is ** zero but it might be more if the alias is contained within a subquery ** of the original expression. The Expr.op2 field of TK_AGG_FUNCTION ** structures must be increased by the nSubquery amount. @@ -75081,23 +89034,14 @@ static void resolveAlias( assert( iCol>=0 && iColnExpr ); pOrig = pEList->a[iCol].pExpr; assert( pOrig!=0 ); - assert( pOrig->flags & EP_Resolved ); db = pParse->db; pDup = sqlite3ExprDup(db, pOrig, 0); if( pDup==0 ) return; - if( pOrig->op!=TK_COLUMN && zType[0]!='G' ){ - incrAggFunctionDepth(pDup, nSubquery); - pDup = sqlite3PExpr(pParse, TK_AS, pDup, 0, 0); - if( pDup==0 ) return; - ExprSetProperty(pDup, EP_Skip); - if( pEList->a[iCol].u.x.iAlias==0 ){ - pEList->a[iCol].u.x.iAlias = (u16)(++pParse->nAlias); - } - pDup->iTable = pEList->a[iCol].u.x.iAlias; - } + if( zType[0]!='G' ) incrAggFunctionDepth(pDup, nSubquery); if( pExpr->op==TK_COLLATE ){ pDup = sqlite3ExprAddCollateString(pParse, pDup, pExpr->u.zToken); } + ExprSetProperty(pDup, EP_Alias); /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This ** prevents ExprDelete() from deleting the Expr structure itself, @@ -75229,14 +89173,15 @@ static int lookupName( testcase( pNC->ncFlags & NC_PartIdx ); testcase( pNC->ncFlags & NC_IsCheck ); if( (pNC->ncFlags & (NC_PartIdx|NC_IsCheck))!=0 ){ - /* Silently ignore database qualifiers inside CHECK constraints and partial - ** indices. Do not raise errors because that might break legacy and - ** because it does not hurt anything to just ignore the database name. */ + /* Silently ignore database qualifiers inside CHECK constraints and + ** partial indices. Do not raise errors because that might break + ** legacy and because it does not hurt anything to just ignore the + ** database name. */ zDb = 0; }else{ for(i=0; inDb; i++){ - assert( db->aDb[i].zName ); - if( sqlite3StrICmp(db->aDb[i].zName,zDb)==0 ){ + assert( db->aDb[i].zDbSName ); + if( sqlite3StrICmp(db->aDb[i].zDbSName,zDb)==0 ){ pSchema = db->aDb[i].pSchema; break; } @@ -75288,7 +89233,7 @@ static int lookupName( ** USING clause, then skip this match. */ if( cnt==1 ){ - if( pItem->jointype & JT_NATURAL ) continue; + if( pItem->fg.jointype & JT_NATURAL ) continue; if( nameInUsingClause(pItem->pUsing, zCol) ) continue; } cnt++; @@ -75302,6 +89247,11 @@ static int lookupName( if( pMatch ){ pExpr->iTable = pMatch->iCursor; pExpr->pTab = pMatch->pTab; + /* RIGHT JOIN not (yet) supported */ + assert( (pMatch->fg.jointype & JT_RIGHT)==0 ); + if( (pMatch->fg.jointype & JT_LEFT)!=0 ){ + ExprSetProperty(pExpr, EP_CanBeNull); + } pSchema = pExpr->pTab->pSchema; } } /* if( pSrcList ) */ @@ -75319,6 +89269,8 @@ static int lookupName( }else if( op!=TK_INSERT && sqlite3StrICmp("old",zTab)==0 ){ pExpr->iTable = 0; pTab = pParse->pTriggerTab; + }else{ + pTab = 0; } if( pTab ){ @@ -75333,9 +89285,8 @@ static int lookupName( break; } } - if( iCol>=pTab->nCol && sqlite3IsRowid(zCol) && HasRowid(pTab) ){ - /* IMP: R-24309-18625 */ - /* IMP: R-44911-55124 */ + if( iCol>=pTab->nCol && sqlite3IsRowid(zCol) && VisibleRowid(pTab) ){ + /* IMP: R-51414-32910 */ iCol = -1; } if( iColnCol ){ @@ -75362,10 +89313,15 @@ static int lookupName( /* ** Perhaps the name is a reference to the ROWID */ - assert( pTab!=0 || cntTab==0 ); - if( cnt==0 && cntTab==1 && sqlite3IsRowid(zCol) && HasRowid(pTab) ){ + if( cnt==0 + && cntTab==1 + && pMatch + && (pNC->ncFlags & NC_IdxExpr)==0 + && sqlite3IsRowid(zCol) + && VisibleRowid(pMatch->pTab) + ){ cnt = 1; - pExpr->iColumn = -1; /* IMP: R-44911-55124 */ + pExpr->iColumn = -1; pExpr->affinity = SQLITE_AFF_INTEGER; } @@ -75382,9 +89338,9 @@ static int lookupName( ** resolved by the time the WHERE clause is resolved. ** ** The ability to use an output result-set column in the WHERE, GROUP BY, - ** or HAVING clauses, or as part of a larger expression in the ORDRE BY + ** or HAVING clauses, or as part of a larger expression in the ORDER BY ** clause is not standard SQL. This is a (goofy) SQLite extension, that - ** is supported for backwards compatibility only. TO DO: Issue a warning + ** is supported for backwards compatibility only. Hence, we issue a warning ** on sqlite3_log() whenever the capability is used. */ if( (pEList = pNC->pEList)!=0 @@ -75403,6 +89359,10 @@ static int lookupName( sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs); return WRC_Abort; } + if( sqlite3ExprVectorSize(pOrig)!=1 ){ + sqlite3ErrorMsg(pParse, "row value misused"); + return WRC_Abort; + } resolveAlias(pParse, pEList, j, pExpr, "", nSubquery); cnt = 1; pMatch = 0; @@ -75481,7 +89441,7 @@ static int lookupName( lookupname_end: if( cnt==1 ){ assert( pNC!=0 ); - if( pExpr->op!=TK_AS ){ + if( !ExprHasProperty(pExpr, EP_Alias) ){ sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList); } /* Increment the nRef value on all name contexts from TopNC up to @@ -75522,36 +89482,25 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr } /* -** Report an error that an expression is not valid for a partial index WHERE -** clause. +** Report an error that an expression is not valid for some set of +** pNC->ncFlags values determined by validMask. */ -static void notValidPartIdxWhere( +static void notValid( Parse *pParse, /* Leave error message here */ NameContext *pNC, /* The name context */ - const char *zMsg /* Type of error */ + const char *zMsg, /* Type of error */ + int validMask /* Set of contexts for which prohibited */ ){ - if( (pNC->ncFlags & NC_PartIdx)!=0 ){ - sqlite3ErrorMsg(pParse, "%s prohibited in partial index WHERE clauses", - zMsg); - } -} - + assert( (validMask&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr))==0 ); + if( (pNC->ncFlags & validMask)!=0 ){ + const char *zIn = "partial index WHERE clauses"; + if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions"; #ifndef SQLITE_OMIT_CHECK -/* -** Report an error that an expression is not valid for a CHECK constraint. -*/ -static void notValidCheckConstraint( - Parse *pParse, /* Leave error message here */ - NameContext *pNC, /* The name context */ - const char *zMsg /* Type of error */ -){ - if( (pNC->ncFlags & NC_IsCheck)!=0 ){ - sqlite3ErrorMsg(pParse,"%s prohibited in CHECK constraints", zMsg); + else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints"; +#endif + sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn); } } -#else -# define notValidCheckConstraint(P,N,M) -#endif /* ** Expression p should encode a floating point value between 1.0 and 0.0. @@ -75564,7 +89513,7 @@ static int exprProbability(Expr *p){ sqlite3AtoF(p->u.zToken, &r, sqlite3Strlen30(p->u.zToken), SQLITE_UTF8); assert( r>=0.0 ); if( r>1.0 ) return -1; - return (int)(r*1000.0); + return (int)(r*134217728.0); } /* @@ -75617,7 +89566,8 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ pExpr->affinity = SQLITE_AFF_INTEGER; break; } -#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) */ +#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) + && !defined(SQLITE_OMIT_SUBQUERY) */ /* A lone identifier is the name of a column. */ @@ -75635,6 +89585,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ Expr *pRight; /* if( pSrcList==0 ) break; */ + notValid(pParse, pNC, "the \".\" operator", NC_IdxExpr); pRight = pExpr->pRight; if( pRight->op==TK_ID ){ zDb = 0; @@ -75657,64 +89608,84 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ int no_such_func = 0; /* True if no such function exists */ int wrong_num_args = 0; /* True if wrong number of arguments */ int is_agg = 0; /* True if is an aggregate function */ - int auth; /* Authorization to use the function */ int nId; /* Number of characters in function name */ const char *zId; /* The function name. */ FuncDef *pDef; /* Information about the function */ u8 enc = ENC(pParse->db); /* The database encoding */ assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - notValidPartIdxWhere(pParse, pNC, "functions"); zId = pExpr->u.zToken; nId = sqlite3Strlen30(zId); - pDef = sqlite3FindFunction(pParse->db, zId, nId, n, enc, 0); + pDef = sqlite3FindFunction(pParse->db, zId, n, enc, 0); if( pDef==0 ){ - pDef = sqlite3FindFunction(pParse->db, zId, nId, -2, enc, 0); + pDef = sqlite3FindFunction(pParse->db, zId, -2, enc, 0); if( pDef==0 ){ no_such_func = 1; }else{ wrong_num_args = 1; } }else{ - is_agg = pDef->xFunc==0; + is_agg = pDef->xFinalize!=0; if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){ ExprSetProperty(pExpr, EP_Unlikely|EP_Skip); if( n==2 ){ pExpr->iTable = exprProbability(pList->a[1].pExpr); if( pExpr->iTable<0 ){ - sqlite3ErrorMsg(pParse, "second argument to likelihood() must be a " - "constant between 0.0 and 1.0"); + sqlite3ErrorMsg(pParse, + "second argument to likelihood() must be a " + "constant between 0.0 and 1.0"); pNC->nErr++; } }else{ - /* EVIDENCE-OF: R-61304-29449 The unlikely(X) function is equivalent to - ** likelihood(X, 0.0625). - ** EVIDENCE-OF: R-01283-11636 The unlikely(X) function is short-hand for - ** likelihood(X,0.0625). */ - pExpr->iTable = 62; /* TUNING: Default 2nd arg to unlikely() is 0.0625 */ + /* EVIDENCE-OF: R-61304-29449 The unlikely(X) function is + ** equivalent to likelihood(X, 0.0625). + ** EVIDENCE-OF: R-01283-11636 The unlikely(X) function is + ** short-hand for likelihood(X,0.0625). + ** EVIDENCE-OF: R-36850-34127 The likely(X) function is short-hand + ** for likelihood(X,0.9375). + ** EVIDENCE-OF: R-53436-40973 The likely(X) function is equivalent + ** to likelihood(X,0.9375). */ + /* TUNING: unlikely() probability is 0.0625. likely() is 0.9375 */ + pExpr->iTable = pDef->zName[0]=='u' ? 8388608 : 125829120; } } - } #ifndef SQLITE_OMIT_AUTHORIZATION - if( pDef ){ - auth = sqlite3AuthCheck(pParse, SQLITE_FUNCTION, 0, pDef->zName, 0); - if( auth!=SQLITE_OK ){ - if( auth==SQLITE_DENY ){ - sqlite3ErrorMsg(pParse, "not authorized to use function: %s", - pDef->zName); - pNC->nErr++; + { + int auth = sqlite3AuthCheck(pParse, SQLITE_FUNCTION, 0,pDef->zName,0); + if( auth!=SQLITE_OK ){ + if( auth==SQLITE_DENY ){ + sqlite3ErrorMsg(pParse, "not authorized to use function: %s", + pDef->zName); + pNC->nErr++; + } + pExpr->op = TK_NULL; + return WRC_Prune; } - pExpr->op = TK_NULL; - return WRC_Prune; } - if( pDef->funcFlags & SQLITE_FUNC_CONSTANT ) ExprSetProperty(pExpr,EP_Constant); - } #endif + if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG) ){ + /* For the purposes of the EP_ConstFunc flag, date and time + ** functions and other functions that change slowly are considered + ** constant because they are constant for the duration of one query */ + ExprSetProperty(pExpr,EP_ConstFunc); + } + if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){ + /* Date/time functions that use 'now', and other functions like + ** sqlite_version() that might change over time cannot be used + ** in an index. */ + notValid(pParse, pNC, "non-deterministic functions", + NC_IdxExpr|NC_PartIdx); + } + } if( is_agg && (pNC->ncFlags & NC_AllowAgg)==0 ){ sqlite3ErrorMsg(pParse, "misuse of aggregate function %.*s()", nId,zId); pNC->nErr++; is_agg = 0; - }else if( no_such_func && pParse->db->init.busy==0 ){ + }else if( no_such_func && pParse->db->init.busy==0 +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + && pParse->explain==0 +#endif + ){ sqlite3ErrorMsg(pParse, "no such function: %.*s", nId, zId); pNC->nErr++; }else if( wrong_num_args ){ @@ -75732,7 +89703,13 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ pExpr->op2++; pNC2 = pNC2->pNext; } - if( pNC2 ) pNC2->ncFlags |= NC_HasAgg; + assert( pDef!=0 ); + if( pNC2 ){ + assert( SQLITE_FUNC_MINMAX==NC_MinMaxAgg ); + testcase( (pDef->funcFlags & SQLITE_FUNC_MINMAX)!=0 ); + pNC2->ncFlags |= NC_HasAgg | (pDef->funcFlags & SQLITE_FUNC_MINMAX); + + } pNC->ncFlags |= NC_AllowAgg; } /* FIX ME: Compute pExpr->affinity based on the expected return @@ -75748,21 +89725,56 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){ testcase( pExpr->op==TK_IN ); if( ExprHasProperty(pExpr, EP_xIsSelect) ){ int nRef = pNC->nRef; - notValidCheckConstraint(pParse, pNC, "subqueries"); - notValidPartIdxWhere(pParse, pNC, "subqueries"); + notValid(pParse, pNC, "subqueries", NC_IsCheck|NC_PartIdx|NC_IdxExpr); sqlite3WalkSelect(pWalker, pExpr->x.pSelect); assert( pNC->nRef>=nRef ); if( nRef!=pNC->nRef ){ ExprSetProperty(pExpr, EP_VarSelect); + pNC->ncFlags |= NC_VarSelect; } } break; } case TK_VARIABLE: { - notValidCheckConstraint(pParse, pNC, "parameters"); - notValidPartIdxWhere(pParse, pNC, "parameters"); + notValid(pParse, pNC, "parameters", NC_IsCheck|NC_PartIdx|NC_IdxExpr); break; } + case TK_BETWEEN: + case TK_EQ: + case TK_NE: + case TK_LT: + case TK_LE: + case TK_GT: + case TK_GE: + case TK_IS: + case TK_ISNOT: { + int nLeft, nRight; + if( pParse->db->mallocFailed ) break; + assert( pExpr->pLeft!=0 ); + nLeft = sqlite3ExprVectorSize(pExpr->pLeft); + if( pExpr->op==TK_BETWEEN ){ + nRight = sqlite3ExprVectorSize(pExpr->x.pList->a[0].pExpr); + if( nRight==nLeft ){ + nRight = sqlite3ExprVectorSize(pExpr->x.pList->a[1].pExpr); + } + }else{ + assert( pExpr->pRight!=0 ); + nRight = sqlite3ExprVectorSize(pExpr->pRight); + } + if( nLeft!=nRight ){ + testcase( pExpr->op==TK_EQ ); + testcase( pExpr->op==TK_NE ); + testcase( pExpr->op==TK_LT ); + testcase( pExpr->op==TK_LE ); + testcase( pExpr->op==TK_GT ); + testcase( pExpr->op==TK_GE ); + testcase( pExpr->op==TK_IS ); + testcase( pExpr->op==TK_ISNOT ); + testcase( pExpr->op==TK_BETWEEN ); + sqlite3ErrorMsg(pParse, "row value misused"); + } + break; + } } return (pParse->nErr || pParse->db->mallocFailed) ? WRC_Abort : WRC_Continue; } @@ -75954,9 +89966,11 @@ static int resolveCompoundOrderBy( if( pItem->pExpr==pE ){ pItem->pExpr = pNew; }else{ - assert( pItem->pExpr->op==TK_COLLATE ); - assert( pItem->pExpr->pLeft==pE ); - pItem->pExpr->pLeft = pNew; + Expr *pParent = pItem->pExpr; + assert( pParent->op==TK_COLLATE ); + while( pParent->pLeft->op==TK_COLLATE ) pParent = pParent->pLeft; + assert( pParent->pLeft==pE ); + pParent->pLeft = pNew; } sqlite3ExprDelete(db, pE); pItem->u.x.iOrderByCol = (u16)iCol; @@ -76013,7 +90027,8 @@ SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy( resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr); return 1; } - resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr, zType,0); + resolveAlias(pParse, pEList, pItem->u.x.iOrderByCol-1, pItem->pExpr, + zType,0); } } return 0; @@ -76093,7 +90108,7 @@ static int resolveOrderGroupBy( } /* -** Resolve names in the SELECT statement p and all of its descendents. +** Resolve names in the SELECT statement p and all of its descendants. */ static int resolveSelectStep(Walker *pWalker, Select *p){ NameContext *pOuterNC; /* Context that contains this SELECT */ @@ -76101,7 +90116,6 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ int isCompound; /* True if p is a compound select */ int nCompound; /* Number of compound terms processed so far */ Parse *pParse; /* Parsing context */ - ExprList *pEList; /* Result set expression list */ int i; /* Loop counter */ ExprList *pGroupBy; /* The GROUP BY clause */ Select *pLeftmost; /* Left-most of SELECT of a compound */ @@ -76146,6 +90160,20 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ sqlite3ResolveExprNames(&sNC, p->pOffset) ){ return WRC_Abort; } + + /* If the SF_Converted flags is set, then this Select object was + ** was created by the convertCompoundSelectToSubquery() function. + ** In this case the ORDER BY clause (p->pOrderBy) should be resolved + ** as if it were part of the sub-query, not the parent. This block + ** moves the pOrderBy down to the sub-query. It will be moved back + ** after the names have been resolved. */ + if( p->selFlags & SF_Converted ){ + Select *pSub = p->pSrc->a[0].pSelect; + assert( p->pSrc->nSrc==1 && p->pOrderBy ); + assert( pSub->pPrior && pSub->pOrderBy==0 ); + pSub->pOrderBy = p->pOrderBy; + p->pOrderBy = 0; + } /* Recursively resolve names in all subqueries */ @@ -76160,7 +90188,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ ** parent contexts. After resolving references to expressions in ** pItem->pSelect, check if this value has changed. If so, then ** SELECT statement pItem->pSelect must be correlated. Set the - ** pItem->isCorrelated flag if this is the case. */ + ** pItem->fg.isCorrelated flag if this is the case. */ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef; if( pItem->zName ) pParse->zAuthContext = pItem->zName; @@ -76169,8 +90197,8 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ if( pParse->nErr || db->mallocFailed ) return WRC_Abort; for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef; - assert( pItem->isCorrelated==0 && nRef<=0 ); - pItem->isCorrelated = (nRef!=0); + assert( pItem->fg.isCorrelated==0 && nRef<=0 ); + pItem->fg.isCorrelated = (nRef!=0); } } @@ -76182,14 +90210,7 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ sNC.pNext = pOuterNC; /* Resolve names in the result set. */ - pEList = p->pEList; - assert( pEList!=0 ); - for(i=0; inExpr; i++){ - Expr *pX = pEList->a[i].pExpr; - if( sqlite3ResolveExprNames(&sNC, pX) ){ - return WRC_Abort; - } - } + if( sqlite3ResolveExprListNames(&sNC, p->pEList) ) return WRC_Abort; /* If there are no aggregate functions in the result-set, and no GROUP BY ** expression, do not allow aggregates in any of the other expressions. @@ -76197,7 +90218,8 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ assert( (p->selFlags & SF_Aggregate)==0 ); pGroupBy = p->pGroupBy; if( pGroupBy || (sNC.ncFlags & NC_HasAgg)!=0 ){ - p->selFlags |= SF_Aggregate; + assert( NC_MinMaxAgg==SF_MinMaxAgg ); + p->selFlags |= SF_Aggregate | (sNC.ncFlags&NC_MinMaxAgg); }else{ sNC.ncFlags &= ~NC_AllowAgg; } @@ -76221,18 +90243,46 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort; if( sqlite3ResolveExprNames(&sNC, p->pWhere) ) return WRC_Abort; + /* Resolve names in table-valued-function arguments */ + for(i=0; ipSrc->nSrc; i++){ + struct SrcList_item *pItem = &p->pSrc->a[i]; + if( pItem->fg.isTabFunc + && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg) + ){ + return WRC_Abort; + } + } + /* The ORDER BY and GROUP BY clauses may not refer to terms in ** outer queries */ sNC.pNext = 0; sNC.ncFlags |= NC_AllowAgg; + /* If this is a converted compound query, move the ORDER BY clause from + ** the sub-query back to the parent query. At this point each term + ** within the ORDER BY clause has been transformed to an integer value. + ** These integers will be replaced by copies of the corresponding result + ** set expressions by the call to resolveOrderGroupBy() below. */ + if( p->selFlags & SF_Converted ){ + Select *pSub = p->pSrc->a[0].pSelect; + p->pOrderBy = pSub->pOrderBy; + pSub->pOrderBy = 0; + } + /* Process the ORDER BY clause for singleton SELECT statements. ** The ORDER BY clause for compounds SELECT statements is handled ** below, after all of the result-sets for all of the elements of ** the compound have been resolved. + ** + ** If there is an ORDER BY clause on a term of a compound-select other + ** than the right-most term, then that is a syntax error. But the error + ** is not detected until much later, and so we need to go ahead and + ** resolve those symbols on the incorrect ORDER BY for consistency. */ - if( !isCompound && resolveOrderGroupBy(&sNC, p, p->pOrderBy, "ORDER") ){ + if( isCompound<=nCompound /* Defer right-most ORDER BY of a compound */ + && resolveOrderGroupBy(&sNC, p, p->pOrderBy, "ORDER") + ){ return WRC_Abort; } if( db->mallocFailed ){ @@ -76257,6 +90307,13 @@ static int resolveSelectStep(Walker *pWalker, Select *p){ } } + /* If this is part of a compound SELECT, check that it has the right + ** number of expressions in the select list. */ + if( p->pNext && p->pEList->nExpr!=p->pNext->pEList->nExpr ){ + sqlite3SelectWrongNumTermsError(pParse, p->pNext); + return WRC_Abort; + } + /* Advance to the next term of the compound */ p = p->pPrior; @@ -76325,7 +90382,7 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames( NameContext *pNC, /* Namespace to resolve expressions in. */ Expr *pExpr /* The expression to be analyzed. */ ){ - u8 savedHasAgg; + u16 savedHasAgg; Walker w; if( pExpr==0 ) return 0; @@ -76338,12 +90395,14 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames( pParse->nHeight += pExpr->nHeight; } #endif - savedHasAgg = pNC->ncFlags & NC_HasAgg; - pNC->ncFlags &= ~NC_HasAgg; - memset(&w, 0, sizeof(w)); + savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg); + pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg); + w.pParse = pNC->pParse; w.xExprCallback = resolveExprStep; w.xSelectCallback = resolveSelectStep; - w.pParse = pNC->pParse; + w.xSelectCallback2 = 0; + w.walkerDepth = 0; + w.eCode = 0; w.u.pNC = pNC; sqlite3WalkExpr(&w, pExpr); #if SQLITE_MAX_EXPR_DEPTH>0 @@ -76354,12 +90413,28 @@ SQLITE_PRIVATE int sqlite3ResolveExprNames( } if( pNC->ncFlags & NC_HasAgg ){ ExprSetProperty(pExpr, EP_Agg); - }else if( savedHasAgg ){ - pNC->ncFlags |= NC_HasAgg; } + pNC->ncFlags |= savedHasAgg; return ExprHasProperty(pExpr, EP_Error); } +/* +** Resolve all names for all expression in an expression list. This is +** just like sqlite3ResolveExprNames() except that it works for an expression +** list rather than a single expression. +*/ +SQLITE_PRIVATE int sqlite3ResolveExprListNames( + NameContext *pNC, /* Namespace to resolve expressions in. */ + ExprList *pList /* The expression list to be analyzed. */ +){ + int i; + if( pList ){ + for(i=0; inExpr; i++){ + if( sqlite3ResolveExprNames(pNC, pList->a[i].pExpr) ) return WRC_Abort; + } + } + return WRC_Continue; +} /* ** Resolve all names in all expressions of a SELECT and in all @@ -76403,15 +90478,14 @@ SQLITE_PRIVATE void sqlite3ResolveSelectNames( SQLITE_PRIVATE void sqlite3ResolveSelfReference( Parse *pParse, /* Parsing context */ Table *pTab, /* The table being referenced */ - int type, /* NC_IsCheck or NC_PartIdx */ + int type, /* NC_IsCheck or NC_PartIdx or NC_IdxExpr */ Expr *pExpr, /* Expression to resolve. May be NULL. */ ExprList *pList /* Expression list to resolve. May be NUL. */ ){ SrcList sSrc; /* Fake SrcList for pParse->pNewTable */ NameContext sNC; /* Name context for pParse->pNewTable */ - int i; /* Loop counter */ - assert( type==NC_IsCheck || type==NC_PartIdx ); + assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr ); memset(&sNC, 0, sizeof(sNC)); memset(&sSrc, 0, sizeof(sSrc)); sSrc.nSrc = 1; @@ -76422,13 +90496,7 @@ SQLITE_PRIVATE void sqlite3ResolveSelfReference( sNC.pSrcList = &sSrc; sNC.ncFlags = type; if( sqlite3ResolveExprNames(&sNC, pExpr) ) return; - if( pList ){ - for(i=0; inExpr; i++){ - if( sqlite3ResolveExprNames(&sNC, pList->a[i].pExpr) ){ - return; - } - } - } + if( pList ) sqlite3ResolveExprListNames(&sNC, pList); } /************** End of resolve.c *********************************************/ @@ -76447,6 +90515,19 @@ SQLITE_PRIVATE void sqlite3ResolveSelfReference( ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. */ +/* #include "sqliteInt.h" */ + +/* Forward declarations */ +static void exprCodeBetween(Parse*,Expr*,int,void(*)(Parse*,Expr*,int,int),int); +static int exprCodeVector(Parse *pParse, Expr *p, int *piToFree); + +/* +** Return the affinity character for a single column of a table. +*/ +SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){ + assert( iColnCol ); + return iCol>=0 ? pTab->aCol[iCol].affinity : SQLITE_AFF_INTEGER; +} /* ** Return the 'affinity' of the expression pExpr if any. @@ -76456,7 +90537,7 @@ SQLITE_PRIVATE void sqlite3ResolveSelfReference( ** affinity of that column is returned. Otherwise, 0x00 is returned, ** indicating no affinity for the expression. ** -** i.e. the WHERE clause expresssions in the following statements all +** i.e. the WHERE clause expressions in the following statements all ** have an affinity: ** ** CREATE TABLE t1(a); @@ -76467,26 +90548,27 @@ SQLITE_PRIVATE void sqlite3ResolveSelfReference( SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){ int op; pExpr = sqlite3ExprSkipCollate(pExpr); + if( pExpr->flags & EP_Generic ) return 0; op = pExpr->op; if( op==TK_SELECT ){ assert( pExpr->flags&EP_xIsSelect ); return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr); } + if( op==TK_REGISTER ) op = pExpr->op2; #ifndef SQLITE_OMIT_CAST if( op==TK_CAST ){ assert( !ExprHasProperty(pExpr, EP_IntValue) ); return sqlite3AffinityType(pExpr->u.zToken, 0); } #endif - if( (op==TK_AGG_COLUMN || op==TK_COLUMN || op==TK_REGISTER) - && pExpr->pTab!=0 - ){ - /* op==TK_REGISTER && pExpr->pTab!=0 happens when pExpr was originally - ** a TK_COLUMN but was previously evaluated and cached in a register */ - int j = pExpr->iColumn; - if( j<0 ) return SQLITE_AFF_INTEGER; - assert( pExpr->pTab && jpTab->nCol ); - return pExpr->pTab->aCol[j].affinity; + if( op==TK_AGG_COLUMN || op==TK_COLUMN ){ + return sqlite3TableColumnAffinity(pExpr->pTab, pExpr->iColumn); + } + if( op==TK_SELECT_COLUMN ){ + assert( pExpr->pLeft->flags&EP_xIsSelect ); + return sqlite3ExprAffinity( + pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr + ); } return pExpr->affinity; } @@ -76499,9 +90581,14 @@ SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){ ** If a memory allocation error occurs, that fact is recorded in pParse->db ** and the pExpr parameter is returned unchanged. */ -SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr *pExpr, Token *pCollName){ +SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken( + Parse *pParse, /* Parsing context */ + Expr *pExpr, /* Add the "COLLATE" clause to this expression */ + const Token *pCollName, /* Name of collating sequence */ + int dequote /* True to dequote pCollName */ +){ if( pCollName->n>0 ){ - Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, 1); + Expr *pNew = sqlite3ExprAlloc(pParse->db, TK_COLLATE, pCollName, dequote); if( pNew ){ pNew->pLeft = pExpr; pNew->flags |= EP_Collate|EP_Skip; @@ -76513,13 +90600,12 @@ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr *pExpr, Toke SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, const char *zC){ Token s; assert( zC!=0 ); - s.z = zC; - s.n = sqlite3Strlen30(s.z); - return sqlite3ExprAddCollateToken(pParse, pExpr, &s); + sqlite3TokenInit(&s, (char*)zC); + return sqlite3ExprAddCollateToken(pParse, pExpr, &s, 0); } /* -** Skip over any TK_COLLATE or TK_AS operators and any unlikely() +** Skip over any TK_COLLATE operators and any unlikely() ** or likelihood() function at the root of an expression. */ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){ @@ -76530,7 +90616,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){ assert( pExpr->op==TK_FUNCTION ); pExpr = pExpr->x.pList->a[0].pExpr; }else{ - assert( pExpr->op==TK_COLLATE || pExpr->op==TK_AS ); + assert( pExpr->op==TK_COLLATE ); pExpr = pExpr->pLeft; } } @@ -76552,6 +90638,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ Expr *p = pExpr; while( p ){ int op = p->op; + if( p->flags & EP_Generic ) break; if( op==TK_CAST || op==TK_UPLUS ){ p = p->pLeft; continue; @@ -76560,9 +90647,9 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken); break; } - if( p->pTab!=0 - && (op==TK_AGG_COLUMN || op==TK_COLUMN + if( (op==TK_AGG_COLUMN || op==TK_COLUMN || op==TK_REGISTER || op==TK_TRIGGER) + && p->pTab!=0 ){ /* op==TK_REGISTER && p->pTab!=0 happens when pExpr was originally ** a TK_COLUMN but was previously evaluated and cached in a register */ @@ -76574,10 +90661,25 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ break; } if( p->flags & EP_Collate ){ - if( ALWAYS(p->pLeft) && (p->pLeft->flags & EP_Collate)!=0 ){ + if( p->pLeft && (p->pLeft->flags & EP_Collate)!=0 ){ p = p->pLeft; }else{ - p = p->pRight; + Expr *pNext = p->pRight; + /* The Expr.x union is never used at the same time as Expr.pRight */ + assert( p->x.pList==0 || p->pRight==0 ); + /* p->flags holds EP_Collate and p->pLeft->flags does not. And + ** p->x.pSelect cannot. So if p->x.pLeft exists, it must hold at + ** least one EP_Collate. Thus the following two ALWAYS. */ + if( p->x.pList!=0 && ALWAYS(!ExprHasProperty(p, EP_xIsSelect)) ){ + int i; + for(i=0; ALWAYS(ix.pList->nExpr); i++){ + if( ExprHasProperty(p->x.pList->a[i].pExpr, EP_Collate) ){ + pNext = p->x.pList->a[i].pExpr; + break; + } + } + } + p = pNext; } }else{ break; @@ -76603,13 +90705,13 @@ SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){ if( sqlite3IsNumericAffinity(aff1) || sqlite3IsNumericAffinity(aff2) ){ return SQLITE_AFF_NUMERIC; }else{ - return SQLITE_AFF_NONE; + return SQLITE_AFF_BLOB; } }else if( !aff1 && !aff2 ){ /* Neither side of the comparison is a column. Compare the ** results directly. */ - return SQLITE_AFF_NONE; + return SQLITE_AFF_BLOB; }else{ /* One side is a column, the other is not. Use the columns affinity. */ assert( aff1==0 || aff2==0 ); @@ -76632,8 +90734,8 @@ static char comparisonAffinity(Expr *pExpr){ aff = sqlite3CompareAffinity(pExpr->pRight, aff); }else if( ExprHasProperty(pExpr, EP_xIsSelect) ){ aff = sqlite3CompareAffinity(pExpr->x.pSelect->pEList->a[0].pExpr, aff); - }else if( !aff ){ - aff = SQLITE_AFF_NONE; + }else if( aff==0 ){ + aff = SQLITE_AFF_BLOB; } return aff; } @@ -76647,7 +90749,7 @@ static char comparisonAffinity(Expr *pExpr){ SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){ char aff = comparisonAffinity(pExpr); switch( aff ){ - case SQLITE_AFF_NONE: + case SQLITE_AFF_BLOB: return 1; case SQLITE_AFF_TEXT: return idx_affinity==SQLITE_AFF_TEXT; @@ -76722,6 +90824,274 @@ static int codeCompare( return addr; } +/* +** Return true if expression pExpr is a vector, or false otherwise. +** +** A vector is defined as any expression that results in two or more +** columns of result. Every TK_VECTOR node is an vector because the +** parser will not generate a TK_VECTOR with fewer than two entries. +** But a TK_SELECT might be either a vector or a scalar. It is only +** considered a vector if it has two or more result columns. +*/ +SQLITE_PRIVATE int sqlite3ExprIsVector(Expr *pExpr){ + return sqlite3ExprVectorSize(pExpr)>1; +} + +/* +** If the expression passed as the only argument is of type TK_VECTOR +** return the number of expressions in the vector. Or, if the expression +** is a sub-select, return the number of columns in the sub-select. For +** any other type of expression, return 1. +*/ +SQLITE_PRIVATE int sqlite3ExprVectorSize(Expr *pExpr){ + u8 op = pExpr->op; + if( op==TK_REGISTER ) op = pExpr->op2; + if( op==TK_VECTOR ){ + return pExpr->x.pList->nExpr; + }else if( op==TK_SELECT ){ + return pExpr->x.pSelect->pEList->nExpr; + }else{ + return 1; + } +} + +#ifndef SQLITE_OMIT_SUBQUERY +/* +** Return a pointer to a subexpression of pVector that is the i-th +** column of the vector (numbered starting with 0). The caller must +** ensure that i is within range. +** +** If pVector is really a scalar (and "scalar" here includes subqueries +** that return a single column!) then return pVector unmodified. +** +** pVector retains ownership of the returned subexpression. +** +** If the vector is a (SELECT ...) then the expression returned is +** just the expression for the i-th term of the result set, and may +** not be ready for evaluation because the table cursor has not yet +** been positioned. +*/ +SQLITE_PRIVATE Expr *sqlite3VectorFieldSubexpr(Expr *pVector, int i){ + assert( iop2==0 || pVector->op==TK_REGISTER ); + if( pVector->op==TK_SELECT || pVector->op2==TK_SELECT ){ + return pVector->x.pSelect->pEList->a[i].pExpr; + }else{ + return pVector->x.pList->a[i].pExpr; + } + } + return pVector; +} +#endif /* !defined(SQLITE_OMIT_SUBQUERY) */ + +#ifndef SQLITE_OMIT_SUBQUERY +/* +** Compute and return a new Expr object which when passed to +** sqlite3ExprCode() will generate all necessary code to compute +** the iField-th column of the vector expression pVector. +** +** It is ok for pVector to be a scalar (as long as iField==0). +** In that case, this routine works like sqlite3ExprDup(). +** +** The caller owns the returned Expr object and is responsible for +** ensuring that the returned value eventually gets freed. +** +** The caller retains ownership of pVector. If pVector is a TK_SELECT, +** then the returned object will reference pVector and so pVector must remain +** valid for the life of the returned object. If pVector is a TK_VECTOR +** or a scalar expression, then it can be deleted as soon as this routine +** returns. +** +** A trick to cause a TK_SELECT pVector to be deleted together with +** the returned Expr object is to attach the pVector to the pRight field +** of the returned TK_SELECT_COLUMN Expr object. +*/ +SQLITE_PRIVATE Expr *sqlite3ExprForVectorField( + Parse *pParse, /* Parsing context */ + Expr *pVector, /* The vector. List of expressions or a sub-SELECT */ + int iField /* Which column of the vector to return */ +){ + Expr *pRet; + if( pVector->op==TK_SELECT ){ + assert( pVector->flags & EP_xIsSelect ); + /* The TK_SELECT_COLUMN Expr node: + ** + ** pLeft: pVector containing TK_SELECT. Not deleted. + ** pRight: not used. But recursively deleted. + ** iColumn: Index of a column in pVector + ** iTable: 0 or the number of columns on the LHS of an assignment + ** pLeft->iTable: First in an array of register holding result, or 0 + ** if the result is not yet computed. + ** + ** sqlite3ExprDelete() specifically skips the recursive delete of + ** pLeft on TK_SELECT_COLUMN nodes. But pRight is followed, so pVector + ** can be attached to pRight to cause this node to take ownership of + ** pVector. Typically there will be multiple TK_SELECT_COLUMN nodes + ** with the same pLeft pointer to the pVector, but only one of them + ** will own the pVector. + */ + pRet = sqlite3PExpr(pParse, TK_SELECT_COLUMN, 0, 0); + if( pRet ){ + pRet->iColumn = iField; + pRet->pLeft = pVector; + } + assert( pRet==0 || pRet->iTable==0 ); + }else{ + if( pVector->op==TK_VECTOR ) pVector = pVector->x.pList->a[iField].pExpr; + pRet = sqlite3ExprDup(pParse->db, pVector, 0); + } + return pRet; +} +#endif /* !define(SQLITE_OMIT_SUBQUERY) */ + +/* +** If expression pExpr is of type TK_SELECT, generate code to evaluate +** it. Return the register in which the result is stored (or, if the +** sub-select returns more than one column, the first in an array +** of registers in which the result is stored). +** +** If pExpr is not a TK_SELECT expression, return 0. +*/ +static int exprCodeSubselect(Parse *pParse, Expr *pExpr){ + int reg = 0; +#ifndef SQLITE_OMIT_SUBQUERY + if( pExpr->op==TK_SELECT ){ + reg = sqlite3CodeSubselect(pParse, pExpr, 0, 0); + } +#endif + return reg; +} + +/* +** Argument pVector points to a vector expression - either a TK_VECTOR +** or TK_SELECT that returns more than one column. This function returns +** the register number of a register that contains the value of +** element iField of the vector. +** +** If pVector is a TK_SELECT expression, then code for it must have +** already been generated using the exprCodeSubselect() routine. In this +** case parameter regSelect should be the first in an array of registers +** containing the results of the sub-select. +** +** If pVector is of type TK_VECTOR, then code for the requested field +** is generated. In this case (*pRegFree) may be set to the number of +** a temporary register to be freed by the caller before returning. +** +** Before returning, output parameter (*ppExpr) is set to point to the +** Expr object corresponding to element iElem of the vector. +*/ +static int exprVectorRegister( + Parse *pParse, /* Parse context */ + Expr *pVector, /* Vector to extract element from */ + int iField, /* Field to extract from pVector */ + int regSelect, /* First in array of registers */ + Expr **ppExpr, /* OUT: Expression element */ + int *pRegFree /* OUT: Temp register to free */ +){ + u8 op = pVector->op; + assert( op==TK_VECTOR || op==TK_REGISTER || op==TK_SELECT ); + if( op==TK_REGISTER ){ + *ppExpr = sqlite3VectorFieldSubexpr(pVector, iField); + return pVector->iTable+iField; + } + if( op==TK_SELECT ){ + *ppExpr = pVector->x.pSelect->pEList->a[iField].pExpr; + return regSelect+iField; + } + *ppExpr = pVector->x.pList->a[iField].pExpr; + return sqlite3ExprCodeTemp(pParse, *ppExpr, pRegFree); +} + +/* +** Expression pExpr is a comparison between two vector values. Compute +** the result of the comparison (1, 0, or NULL) and write that +** result into register dest. +** +** The caller must satisfy the following preconditions: +** +** if pExpr->op==TK_IS: op==TK_EQ and p5==SQLITE_NULLEQ +** if pExpr->op==TK_ISNOT: op==TK_NE and p5==SQLITE_NULLEQ +** otherwise: op==pExpr->op and p5==0 +*/ +static void codeVectorCompare( + Parse *pParse, /* Code generator context */ + Expr *pExpr, /* The comparison operation */ + int dest, /* Write results into this register */ + u8 op, /* Comparison operator */ + u8 p5 /* SQLITE_NULLEQ or zero */ +){ + Vdbe *v = pParse->pVdbe; + Expr *pLeft = pExpr->pLeft; + Expr *pRight = pExpr->pRight; + int nLeft = sqlite3ExprVectorSize(pLeft); + int i; + int regLeft = 0; + int regRight = 0; + u8 opx = op; + int addrDone = sqlite3VdbeMakeLabel(v); + + if( nLeft!=sqlite3ExprVectorSize(pRight) ){ + sqlite3ErrorMsg(pParse, "row value misused"); + return; + } + assert( pExpr->op==TK_EQ || pExpr->op==TK_NE + || pExpr->op==TK_IS || pExpr->op==TK_ISNOT + || pExpr->op==TK_LT || pExpr->op==TK_GT + || pExpr->op==TK_LE || pExpr->op==TK_GE + ); + assert( pExpr->op==op || (pExpr->op==TK_IS && op==TK_EQ) + || (pExpr->op==TK_ISNOT && op==TK_NE) ); + assert( p5==0 || pExpr->op!=op ); + assert( p5==SQLITE_NULLEQ || pExpr->op==op ); + + p5 |= SQLITE_STOREP2; + if( opx==TK_LE ) opx = TK_LT; + if( opx==TK_GE ) opx = TK_GT; + + regLeft = exprCodeSubselect(pParse, pLeft); + regRight = exprCodeSubselect(pParse, pRight); + + for(i=0; 1 /*Loop exits by "break"*/; i++){ + int regFree1 = 0, regFree2 = 0; + Expr *pL, *pR; + int r1, r2; + assert( i>=0 && i0 ) sqlite3ExprCachePush(pParse); + r1 = exprVectorRegister(pParse, pLeft, i, regLeft, &pL, ®Free1); + r2 = exprVectorRegister(pParse, pRight, i, regRight, &pR, ®Free2); + codeCompare(pParse, pL, pR, opx, r1, r2, dest, p5); + testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); + testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); + testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); + testcase(op==OP_Ge); VdbeCoverageIf(v,op==OP_Ge); + testcase(op==OP_Eq); VdbeCoverageIf(v,op==OP_Eq); + testcase(op==OP_Ne); VdbeCoverageIf(v,op==OP_Ne); + sqlite3ReleaseTempReg(pParse, regFree1); + sqlite3ReleaseTempReg(pParse, regFree2); + if( i>0 ) sqlite3ExprCachePop(pParse); + if( i==nLeft-1 ){ + break; + } + if( opx==TK_EQ ){ + sqlite3VdbeAddOp2(v, OP_IfNot, dest, addrDone); VdbeCoverage(v); + p5 |= SQLITE_KEEPNULL; + }else if( opx==TK_NE ){ + sqlite3VdbeAddOp2(v, OP_If, dest, addrDone); VdbeCoverage(v); + p5 |= SQLITE_KEEPNULL; + }else{ + assert( op==TK_LT || op==TK_GT || op==TK_LE || op==TK_GE ); + sqlite3VdbeAddOp2(v, OP_ElseNotEq, 0, addrDone); + VdbeCoverageIf(v, op==TK_LT); + VdbeCoverageIf(v, op==TK_GT); + VdbeCoverageIf(v, op==TK_LE); + VdbeCoverageIf(v, op==TK_GE); + if( i==nLeft-2 ) opx = op; + } + } + sqlite3VdbeResolveLabel(v, addrDone); +} + #if SQLITE_MAX_EXPR_DEPTH>0 /* ** Check that argument nHeight is less than or equal to the maximum @@ -76783,6 +91153,9 @@ static void heightOfSelect(Select *p, int *pnHeight){ ** Expr.pSelect member has a height of 1. Any other expression ** has a height equal to the maximum height of any other ** referenced Expr plus one. +** +** Also propagate EP_Propagate flags up from Expr.x.pList to Expr.flags, +** if appropriate. */ static void exprSetHeight(Expr *p){ int nHeight = 0; @@ -76790,8 +91163,9 @@ static void exprSetHeight(Expr *p){ heightOfExpr(p->pRight, &nHeight); if( ExprHasProperty(p, EP_xIsSelect) ){ heightOfSelect(p->x.pSelect, &nHeight); - }else{ + }else if( p->x.pList ){ heightOfExprList(p->x.pList, &nHeight); + p->flags |= EP_Propagate & sqlite3ExprListFlags(p->x.pList); } p->nHeight = nHeight + 1; } @@ -76800,8 +91174,12 @@ static void exprSetHeight(Expr *p){ ** Set the Expr.nHeight variable using the exprSetHeight() function. If ** the height is greater than the maximum allowed expression depth, ** leave an error in pParse. +** +** Also propagate all EP_Propagate flags from the Expr.x.pList into +** Expr.flags. */ -SQLITE_PRIVATE void sqlite3ExprSetHeight(Parse *pParse, Expr *p){ +SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){ + if( pParse->nErr ) return; exprSetHeight(p); sqlite3ExprCheckHeight(pParse, p->nHeight); } @@ -76815,8 +91193,17 @@ SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){ heightOfSelect(p, &nHeight); return nHeight; } -#else - #define exprSetHeight(y) +#else /* ABOVE: Height enforcement enabled. BELOW: Height enforcement off */ +/* +** Propagate all EP_Propagate flags from the Expr.x.pList into +** Expr.flags. +*/ +SQLITE_PRIVATE void sqlite3ExprSetHeightAndFlags(Parse *pParse, Expr *p){ + if( p && p->x.pList && !ExprHasProperty(p, EP_xIsSelect) ){ + p->flags |= EP_Propagate & sqlite3ExprListFlags(p->x.pList); + } +} +#define exprSetHeight(y) #endif /* SQLITE_MAX_EXPR_DEPTH>0 */ /* @@ -76828,7 +91215,7 @@ SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){ ** is responsible for making sure the node eventually gets freed. ** ** If dequote is true, then the token (if it exists) is dequoted. -** If dequote is false, no dequoting is performance. The deQuote +** If dequote is false, no dequoting is performed. The deQuote ** parameter is ignored if pToken is NULL or if the token does not ** appear to be quoted. If the quotes were of the form "..." (double-quotes) ** then the EP_DblQuoted flag is set on the expression node. @@ -76840,7 +91227,7 @@ SQLITE_PRIVATE int sqlite3SelectExprHeight(Select *p){ ** is allocated to hold the integer text and the dequote flag is ignored. */ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( - sqlite3 *db, /* Handle for sqlite3DbMallocZero() (may be null) */ + sqlite3 *db, /* Handle for sqlite3DbMallocRawNN() */ int op, /* Expression opcode */ const Token *pToken, /* Token argument. Might be NULL */ int dequote /* True to dequote */ @@ -76849,6 +91236,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( int nExtra = 0; int iValue = 0; + assert( db!=0 ); if( pToken ){ if( op!=TK_INTEGER || pToken->z==0 || sqlite3GetInt32(pToken->z, &iValue)==0 ){ @@ -76856,8 +91244,9 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( assert( iValue>=0 ); } } - pNew = sqlite3DbMallocZero(db, sizeof(Expr)+nExtra); + pNew = sqlite3DbMallocRawNN(db, sizeof(Expr)+nExtra); if( pNew ){ + memset(pNew, 0, sizeof(Expr)); pNew->op = (u8)op; pNew->iAgg = -1; if( pToken ){ @@ -76865,15 +91254,13 @@ SQLITE_PRIVATE Expr *sqlite3ExprAlloc( pNew->flags |= EP_IntValue; pNew->u.iValue = iValue; }else{ - int c; pNew->u.zToken = (char*)&pNew[1]; assert( pToken->z!=0 || pToken->n==0 ); if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n); pNew->u.zToken[pToken->n] = 0; - if( dequote && nExtra>=3 - && ((c = pToken->z[0])=='\'' || c=='"' || c=='[' || c=='`') ){ + if( dequote && sqlite3Isquote(pNew->u.zToken[0]) ){ + if( pNew->u.zToken[0]=='"' ) pNew->flags |= EP_DblQuoted; sqlite3Dequote(pNew->u.zToken); - if( c=='"' ) pNew->flags |= EP_DblQuoted; } } } @@ -76918,18 +91305,18 @@ SQLITE_PRIVATE void sqlite3ExprAttachSubtrees( }else{ if( pRight ){ pRoot->pRight = pRight; - pRoot->flags |= EP_Collate & pRight->flags; + pRoot->flags |= EP_Propagate & pRight->flags; } if( pLeft ){ pRoot->pLeft = pLeft; - pRoot->flags |= EP_Collate & pLeft->flags; + pRoot->flags |= EP_Propagate & pLeft->flags; } exprSetHeight(pRoot); } } /* -** Allocate a Expr node which joins as many as two subtrees. +** Allocate an Expr node which joins as many as two subtrees. ** ** One or both of the subtrees can be NULL. Return a pointer to the new ** Expr node. Or, if an OOM error occurs, set pParse->db->mallocFailed, @@ -76939,15 +91326,19 @@ SQLITE_PRIVATE Expr *sqlite3PExpr( Parse *pParse, /* Parsing context */ int op, /* Expression opcode */ Expr *pLeft, /* Left operand */ - Expr *pRight, /* Right operand */ - const Token *pToken /* Argument token */ + Expr *pRight /* Right operand */ ){ Expr *p; - if( op==TK_AND && pLeft && pRight ){ + if( op==TK_AND && pParse->nErr==0 ){ /* Take advantage of short-circuit false optimization for AND */ p = sqlite3ExprAnd(pParse->db, pLeft, pRight); }else{ - p = sqlite3ExprAlloc(pParse->db, op, pToken, 1); + p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)); + if( p ){ + memset(p, 0, sizeof(Expr)); + p->op = op & TKFLG_MASK; + p->iAgg = -1; + } sqlite3ExprAttachSubtrees(pParse->db, p, pLeft, pRight); } if( p ) { @@ -76956,6 +91347,22 @@ SQLITE_PRIVATE Expr *sqlite3PExpr( return p; } +/* +** Add pSelect to the Expr.x.pSelect field. Or, if pExpr is NULL (due +** do a memory allocation failure) then delete the pSelect object. +*/ +SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse *pParse, Expr *pExpr, Select *pSelect){ + if( pExpr ){ + pExpr->x.pSelect = pSelect; + ExprSetProperty(pExpr, EP_xIsSelect|EP_Subquery); + sqlite3ExprSetHeightAndFlags(pParse, pExpr); + }else{ + assert( pParse->db->mallocFailed ); + sqlite3SelectDelete(pParse->db, pSelect); + } +} + + /* ** If the expression is always either TRUE or FALSE (respectively), ** then return 1. If one cannot determine the truth value of the @@ -77022,7 +91429,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token * } pNew->x.pList = pList; assert( !ExprHasProperty(pNew, EP_xIsSelect) ); - sqlite3ExprSetHeight(pParse, pNew); + sqlite3ExprSetHeightAndFlags(pParse, pNew); return pNew; } @@ -77034,36 +91441,42 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token * ** variable number. ** ** Wildcards of the form "?nnn" are assigned the number "nnn". We make -** sure "nnn" is not too be to avoid a denial of service attack when +** sure "nnn" is not too big to avoid a denial of service attack when ** the SQL statement comes from an external source. ** ** Wildcards of the form ":aaa", "@aaa", or "$aaa" are assigned the same number ** as the previous instance of the same wildcard. Or if this is the first -** instance of the wildcard, the next sequenial variable number is +** instance of the wildcard, the next sequential variable number is ** assigned. */ -SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){ +SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr, u32 n){ sqlite3 *db = pParse->db; const char *z; + ynVar x; if( pExpr==0 ) return; assert( !ExprHasProperty(pExpr, EP_IntValue|EP_Reduced|EP_TokenOnly) ); z = pExpr->u.zToken; assert( z!=0 ); assert( z[0]!=0 ); + assert( n==sqlite3Strlen30(z) ); if( z[1]==0 ){ /* Wildcard of the form "?". Assign the next variable number */ assert( z[0]=='?' ); - pExpr->iColumn = (ynVar)(++pParse->nVar); + x = (ynVar)(++pParse->nVar); }else{ - ynVar x = 0; - u32 n = sqlite3Strlen30(z); + int doAdd = 0; if( z[0]=='?' ){ /* Wildcard of the form "?nnn". Convert "nnn" to an integer and ** use it as the variable number */ i64 i; - int bOk = 0==sqlite3Atoi64(&z[1], &i, n-1, SQLITE_UTF8); - pExpr->iColumn = x = (ynVar)i; + int bOk; + if( n==2 ){ /*OPTIMIZATION-IF-TRUE*/ + i = z[1]-'0'; /* The common case of ?N for a single digit N */ + bOk = 1; + }else{ + bOk = 0==sqlite3Atoi64(&z[1], &i, n-1, SQLITE_UTF8); + } testcase( i==0 ); testcase( i==1 ); testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 ); @@ -77071,41 +91484,32 @@ SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){ if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d", db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]); - x = 0; + return; } - if( i>pParse->nVar ){ - pParse->nVar = (int)i; + x = (ynVar)i; + if( x>pParse->nVar ){ + pParse->nVar = (int)x; + doAdd = 1; + }else if( sqlite3VListNumToName(pParse->pVList, x)==0 ){ + doAdd = 1; } }else{ /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable ** number as the prior appearance of the same name, or if the name ** has never appeared before, reuse the same variable number */ - ynVar i; - for(i=0; inzVar; i++){ - if( pParse->azVar[i] && strcmp(pParse->azVar[i],z)==0 ){ - pExpr->iColumn = x = (ynVar)i+1; - break; - } - } - if( x==0 ) x = pExpr->iColumn = (ynVar)(++pParse->nVar); - } - if( x>0 ){ - if( x>pParse->nzVar ){ - char **a; - a = sqlite3DbRealloc(db, pParse->azVar, x*sizeof(a[0])); - if( a==0 ) return; /* Error reported through db->mallocFailed */ - pParse->azVar = a; - memset(&a[pParse->nzVar], 0, (x-pParse->nzVar)*sizeof(a[0])); - pParse->nzVar = x; - } - if( z[0]!='?' || pParse->azVar[x-1]==0 ){ - sqlite3DbFree(db, pParse->azVar[x-1]); - pParse->azVar[x-1] = sqlite3DbStrNDup(db, z, n); + x = (ynVar)sqlite3VListNameToNum(pParse->pVList, z, n); + if( x==0 ){ + x = (ynVar)(++pParse->nVar); + doAdd = 1; } } - } - if( !pParse->nErr && pParse->nVar>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ + if( doAdd ){ + pParse->pVList = sqlite3VListAdd(db, pParse->pVList, z, n, x); + } + } + pExpr->iColumn = x; + if( x>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ sqlite3ErrorMsg(pParse, "too many SQL variables"); } } @@ -77113,26 +91517,36 @@ SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){ /* ** Recursively delete an expression tree. */ -SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){ - if( p==0 ) return; +static SQLITE_NOINLINE void sqlite3ExprDeleteNN(sqlite3 *db, Expr *p){ + assert( p!=0 ); /* Sanity check: Assert that the IntValue is non-negative if it exists */ assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 ); - if( !ExprHasProperty(p, EP_TokenOnly) ){ +#ifdef SQLITE_DEBUG + if( ExprHasProperty(p, EP_Leaf) && !ExprHasProperty(p, EP_TokenOnly) ){ + assert( p->pLeft==0 ); + assert( p->pRight==0 ); + assert( p->x.pSelect==0 ); + } +#endif + if( !ExprHasProperty(p, (EP_TokenOnly|EP_Leaf)) ){ /* The Expr.x union is never used at the same time as Expr.pRight */ assert( p->x.pList==0 || p->pRight==0 ); - sqlite3ExprDelete(db, p->pLeft); + if( p->pLeft && p->op!=TK_SELECT_COLUMN ) sqlite3ExprDeleteNN(db, p->pLeft); sqlite3ExprDelete(db, p->pRight); - if( ExprHasProperty(p, EP_MemToken) ) sqlite3DbFree(db, p->u.zToken); if( ExprHasProperty(p, EP_xIsSelect) ){ sqlite3SelectDelete(db, p->x.pSelect); }else{ sqlite3ExprListDelete(db, p->x.pList); } } + if( ExprHasProperty(p, EP_MemToken) ) sqlite3DbFree(db, p->u.zToken); if( !ExprHasProperty(p, EP_Static) ){ sqlite3DbFree(db, p); } } +SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3 *db, Expr *p){ + if( p ) sqlite3ExprDeleteNN(db, p); +} /* ** Return the number of bytes allocated for the expression structure @@ -77174,7 +91588,7 @@ static int exprStructSize(Expr *p){ ** During expression analysis, extra information is computed and moved into ** later parts of teh Expr object and that extra information might get chopped ** off if the expression is reduced. Note also that it does not work to -** make a EXPRDUP_REDUCE copy of a reduced expression. It is only legal +** make an EXPRDUP_REDUCE copy of a reduced expression. It is only legal ** to reduce a pristine expression tree from the parser. The implementation ** of dupedExprStructSize() contain multiple assert() statements that attempt ** to enforce this constraint. @@ -77184,7 +91598,7 @@ static int dupedExprStructSize(Expr *p, int flags){ assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */ assert( EXPR_FULLSIZE<=0xfff ); assert( (0xfff & (EP_Reduced|EP_TokenOnly))==0 ); - if( 0==(flags&EXPRDUP_REDUCE) ){ + if( 0==flags || p->op==TK_SELECT_COLUMN ){ nSize = EXPR_FULLSIZE; }else{ assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) ); @@ -77243,87 +91657,97 @@ static int dupedExprSize(Expr *p, int flags){ ** is not NULL then *pzBuffer is assumed to point to a buffer large enough ** to store the copy of expression p, the copies of p->u.zToken ** (if applicable), and the copies of the p->pLeft and p->pRight expressions, -** if any. Before returning, *pzBuffer is set to the first byte passed the +** if any. Before returning, *pzBuffer is set to the first byte past the ** portion of the buffer copied into by this function. */ -static Expr *exprDup(sqlite3 *db, Expr *p, int flags, u8 **pzBuffer){ - Expr *pNew = 0; /* Value to return */ - if( p ){ - const int isReduced = (flags&EXPRDUP_REDUCE); - u8 *zAlloc; - u32 staticFlag = 0; +static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){ + Expr *pNew; /* Value to return */ + u8 *zAlloc; /* Memory space from which to build Expr object */ + u32 staticFlag; /* EP_Static if space not obtained from malloc */ - assert( pzBuffer==0 || isReduced ); + assert( db!=0 ); + assert( p ); + assert( dupFlags==0 || dupFlags==EXPRDUP_REDUCE ); + assert( pzBuffer==0 || dupFlags==EXPRDUP_REDUCE ); - /* Figure out where to write the new Expr structure. */ - if( pzBuffer ){ - zAlloc = *pzBuffer; - staticFlag = EP_Static; + /* Figure out where to write the new Expr structure. */ + if( pzBuffer ){ + zAlloc = *pzBuffer; + staticFlag = EP_Static; + }else{ + zAlloc = sqlite3DbMallocRawNN(db, dupedExprSize(p, dupFlags)); + staticFlag = 0; + } + pNew = (Expr *)zAlloc; + + if( pNew ){ + /* Set nNewSize to the size allocated for the structure pointed to + ** by pNew. This is either EXPR_FULLSIZE, EXPR_REDUCEDSIZE or + ** EXPR_TOKENONLYSIZE. nToken is set to the number of bytes consumed + ** by the copy of the p->u.zToken string (if any). + */ + const unsigned nStructSize = dupedExprStructSize(p, dupFlags); + const int nNewSize = nStructSize & 0xfff; + int nToken; + if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ + nToken = sqlite3Strlen30(p->u.zToken) + 1; }else{ - zAlloc = sqlite3DbMallocRaw(db, dupedExprSize(p, flags)); + nToken = 0; } - pNew = (Expr *)zAlloc; - - if( pNew ){ - /* Set nNewSize to the size allocated for the structure pointed to - ** by pNew. This is either EXPR_FULLSIZE, EXPR_REDUCEDSIZE or - ** EXPR_TOKENONLYSIZE. nToken is set to the number of bytes consumed - ** by the copy of the p->u.zToken string (if any). - */ - const unsigned nStructSize = dupedExprStructSize(p, flags); - const int nNewSize = nStructSize & 0xfff; - int nToken; - if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ - nToken = sqlite3Strlen30(p->u.zToken) + 1; - }else{ - nToken = 0; - } - if( isReduced ){ - assert( ExprHasProperty(p, EP_Reduced)==0 ); - memcpy(zAlloc, p, nNewSize); - }else{ - int nSize = exprStructSize(p); - memcpy(zAlloc, p, nSize); + if( dupFlags ){ + assert( ExprHasProperty(p, EP_Reduced)==0 ); + memcpy(zAlloc, p, nNewSize); + }else{ + u32 nSize = (u32)exprStructSize(p); + memcpy(zAlloc, p, nSize); + if( nSizeflags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken); - pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly); - pNew->flags |= staticFlag; + /* Set the EP_Reduced, EP_TokenOnly, and EP_Static flags appropriately. */ + pNew->flags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken); + pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly); + pNew->flags |= staticFlag; - /* Copy the p->u.zToken string, if any. */ - if( nToken ){ - char *zToken = pNew->u.zToken = (char*)&zAlloc[nNewSize]; - memcpy(zToken, p->u.zToken, nToken); - } + /* Copy the p->u.zToken string, if any. */ + if( nToken ){ + char *zToken = pNew->u.zToken = (char*)&zAlloc[nNewSize]; + memcpy(zToken, p->u.zToken, nToken); + } - if( 0==((p->flags|pNew->flags) & EP_TokenOnly) ){ - /* Fill in the pNew->x.pSelect or pNew->x.pList member. */ - if( ExprHasProperty(p, EP_xIsSelect) ){ - pNew->x.pSelect = sqlite3SelectDup(db, p->x.pSelect, isReduced); - }else{ - pNew->x.pList = sqlite3ExprListDup(db, p->x.pList, isReduced); - } - } - - /* Fill in pNew->pLeft and pNew->pRight. */ - if( ExprHasProperty(pNew, EP_Reduced|EP_TokenOnly) ){ - zAlloc += dupedExprNodeSize(p, flags); - if( ExprHasProperty(pNew, EP_Reduced) ){ - pNew->pLeft = exprDup(db, p->pLeft, EXPRDUP_REDUCE, &zAlloc); - pNew->pRight = exprDup(db, p->pRight, EXPRDUP_REDUCE, &zAlloc); - } - if( pzBuffer ){ - *pzBuffer = zAlloc; - } + if( 0==((p->flags|pNew->flags) & (EP_TokenOnly|EP_Leaf)) ){ + /* Fill in the pNew->x.pSelect or pNew->x.pList member. */ + if( ExprHasProperty(p, EP_xIsSelect) ){ + pNew->x.pSelect = sqlite3SelectDup(db, p->x.pSelect, dupFlags); }else{ - if( !ExprHasProperty(p, EP_TokenOnly) ){ - pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); - pNew->pRight = sqlite3ExprDup(db, p->pRight, 0); - } + pNew->x.pList = sqlite3ExprListDup(db, p->x.pList, dupFlags); } + } + /* Fill in pNew->pLeft and pNew->pRight. */ + if( ExprHasProperty(pNew, EP_Reduced|EP_TokenOnly) ){ + zAlloc += dupedExprNodeSize(p, dupFlags); + if( !ExprHasProperty(pNew, EP_TokenOnly|EP_Leaf) ){ + pNew->pLeft = p->pLeft ? + exprDup(db, p->pLeft, EXPRDUP_REDUCE, &zAlloc) : 0; + pNew->pRight = p->pRight ? + exprDup(db, p->pRight, EXPRDUP_REDUCE, &zAlloc) : 0; + } + if( pzBuffer ){ + *pzBuffer = zAlloc; + } + }else{ + if( !ExprHasProperty(p, EP_TokenOnly|EP_Leaf) ){ + if( pNew->op==TK_SELECT_COLUMN ){ + pNew->pLeft = p->pLeft; + assert( p->iColumn==0 || p->pRight==0 ); + assert( p->pRight==0 || p->pRight==p->pLeft ); + }else{ + pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); + } + pNew->pRight = sqlite3ExprDup(db, p->pRight, 0); + } } } return pNew; @@ -77374,19 +91798,21 @@ static With *withDup(sqlite3 *db, With *p){ ** part of the in-memory representation of the database schema. */ SQLITE_PRIVATE Expr *sqlite3ExprDup(sqlite3 *db, Expr *p, int flags){ - return exprDup(db, p, flags, 0); + assert( flags==0 || flags==EXPRDUP_REDUCE ); + return p ? exprDup(db, p, flags, 0) : 0; } SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){ ExprList *pNew; struct ExprList_item *pItem, *pOldItem; int i; + Expr *pPriorSelectCol = 0; + assert( db!=0 ); if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); + pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew) ); if( pNew==0 ) return 0; - pNew->iECursor = 0; pNew->nExpr = i = p->nExpr; if( (flags & EXPRDUP_REDUCE)==0 ) for(i=1; inExpr; i+=i){} - pNew->a = pItem = sqlite3DbMallocRaw(db, i*sizeof(p->a[0]) ); + pNew->a = pItem = sqlite3DbMallocRawNN(db, i*sizeof(p->a[0]) ); if( pItem==0 ){ sqlite3DbFree(db, pNew); return 0; @@ -77394,7 +91820,24 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags) pOldItem = p->a; for(i=0; inExpr; i++, pItem++, pOldItem++){ Expr *pOldExpr = pOldItem->pExpr; + Expr *pNewExpr; pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); + if( pOldExpr + && pOldExpr->op==TK_SELECT_COLUMN + && (pNewExpr = pItem->pExpr)!=0 + ){ + assert( pNewExpr->iColumn==0 || i>0 ); + if( pNewExpr->iColumn==0 ){ + assert( pOldExpr->pLeft==pOldExpr->pRight ); + pPriorSelectCol = pNewExpr->pLeft = pNewExpr->pRight; + }else{ + assert( i>0 ); + assert( pItem[-1].pExpr!=0 ); + assert( pNewExpr->iColumn==pItem[-1].pExpr->iColumn+1 ); + assert( pPriorSelectCol==pItem[-1].pExpr->pLeft ); + pNewExpr->pLeft = pPriorSelectCol; + } + } pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); pItem->sortOrder = pOldItem->sortOrder; @@ -77417,9 +91860,10 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ SrcList *pNew; int i; int nByte; + assert( db!=0 ); if( p==0 ) return 0; nByte = sizeof(*p) + (p->nSrc>0 ? sizeof(p->a[0]) * (p->nSrc-1) : 0); - pNew = sqlite3DbMallocRaw(db, nByte ); + pNew = sqlite3DbMallocRawNN(db, nByte ); if( pNew==0 ) return 0; pNew->nSrc = pNew->nAlloc = p->nSrc; for(i=0; inSrc; i++){ @@ -77430,19 +91874,21 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ pNewItem->zDatabase = sqlite3DbStrDup(db, pOldItem->zDatabase); pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias); - pNewItem->jointype = pOldItem->jointype; + pNewItem->fg = pOldItem->fg; pNewItem->iCursor = pOldItem->iCursor; pNewItem->addrFillSub = pOldItem->addrFillSub; pNewItem->regReturn = pOldItem->regReturn; - pNewItem->isCorrelated = pOldItem->isCorrelated; - pNewItem->viaCoroutine = pOldItem->viaCoroutine; - pNewItem->isRecursive = pOldItem->isRecursive; - pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex); - pNewItem->notIndexed = pOldItem->notIndexed; - pNewItem->pIndex = pOldItem->pIndex; + if( pNewItem->fg.isIndexedBy ){ + pNewItem->u1.zIndexedBy = sqlite3DbStrDup(db, pOldItem->u1.zIndexedBy); + } + pNewItem->pIBIndex = pOldItem->pIBIndex; + if( pNewItem->fg.isTabFunc ){ + pNewItem->u1.pFuncArg = + sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags); + } pTab = pNewItem->pTab = pOldItem->pTab; if( pTab ){ - pTab->nRef++; + pTab->nTabRef++; } pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags); pNewItem->pOn = sqlite3ExprDup(db, pOldItem->pOn, flags); @@ -77454,11 +91900,12 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3 *db, IdList *p){ IdList *pNew; int i; + assert( db!=0 ); if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); + pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew) ); if( pNew==0 ) return 0; pNew->nId = p->nId; - pNew->a = sqlite3DbMallocRaw(db, p->nId*sizeof(p->a[0]) ); + pNew->a = sqlite3DbMallocRawNN(db, p->nId*sizeof(p->a[0]) ); if( pNew->a==0 ){ sqlite3DbFree(db, pNew); return 0; @@ -77474,33 +91921,41 @@ SQLITE_PRIVATE IdList *sqlite3IdListDup(sqlite3 *db, IdList *p){ } return pNew; } -SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ - Select *pNew, *pPrior; - if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*p) ); - if( pNew==0 ) return 0; - pNew->pEList = sqlite3ExprListDup(db, p->pEList, flags); - pNew->pSrc = sqlite3SrcListDup(db, p->pSrc, flags); - pNew->pWhere = sqlite3ExprDup(db, p->pWhere, flags); - pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags); - pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags); - pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags); - pNew->op = p->op; - pNew->pPrior = pPrior = sqlite3SelectDup(db, p->pPrior, flags); - if( pPrior ) pPrior->pNext = pNew; - pNew->pNext = 0; - pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags); - pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags); - pNew->iLimit = 0; - pNew->iOffset = 0; - pNew->selFlags = p->selFlags & ~SF_UsesEphemeral; - pNew->pRightmost = 0; - pNew->addrOpenEphm[0] = -1; - pNew->addrOpenEphm[1] = -1; - pNew->addrOpenEphm[2] = -1; - pNew->nSelectRow = p->nSelectRow; - pNew->pWith = withDup(db, p->pWith); - return pNew; +SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *pDup, int flags){ + Select *pRet = 0; + Select *pNext = 0; + Select **pp = &pRet; + Select *p; + + assert( db!=0 ); + for(p=pDup; p; p=p->pPrior){ + Select *pNew = sqlite3DbMallocRawNN(db, sizeof(*p) ); + if( pNew==0 ) break; + pNew->pEList = sqlite3ExprListDup(db, p->pEList, flags); + pNew->pSrc = sqlite3SrcListDup(db, p->pSrc, flags); + pNew->pWhere = sqlite3ExprDup(db, p->pWhere, flags); + pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags); + pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags); + pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags); + pNew->op = p->op; + pNew->pNext = pNext; + pNew->pPrior = 0; + pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags); + pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags); + pNew->iLimit = 0; + pNew->iOffset = 0; + pNew->selFlags = p->selFlags & ~SF_UsesEphemeral; + pNew->addrOpenEphm[0] = -1; + pNew->addrOpenEphm[1] = -1; + pNew->nSelectRow = p->nSelectRow; + pNew->pWith = withDup(db, p->pWith); + sqlite3SelectSetName(pNew, p->zSelName); + *pp = pNew; + pp = &pNew->pPrior; + pNext = pNew; + } + + return pRet; } #else SQLITE_PRIVATE Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ @@ -77524,12 +91979,14 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppend( Expr *pExpr /* Expression to be appended. Might be NULL */ ){ sqlite3 *db = pParse->db; + assert( db!=0 ); if( pList==0 ){ - pList = sqlite3DbMallocZero(db, sizeof(ExprList) ); + pList = sqlite3DbMallocRawNN(db, sizeof(ExprList) ); if( pList==0 ){ goto no_mem; } - pList->a = sqlite3DbMallocRaw(db, sizeof(pList->a[0])); + pList->nExpr = 0; + pList->a = sqlite3DbMallocRawNN(db, sizeof(pList->a[0])); if( pList->a==0 ) goto no_mem; }else if( (pList->nExpr & (pList->nExpr-1))==0 ){ struct ExprList_item *a; @@ -77555,6 +92012,89 @@ no_mem: return 0; } +/* +** pColumns and pExpr form a vector assignment which is part of the SET +** clause of an UPDATE statement. Like this: +** +** (a,b,c) = (expr1,expr2,expr3) +** Or: (a,b,c) = (SELECT x,y,z FROM ....) +** +** For each term of the vector assignment, append new entries to the +** expression list pList. In the case of a subquery on the RHS, append +** TK_SELECT_COLUMN expressions. +*/ +SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* List to which to append. Might be NULL */ + IdList *pColumns, /* List of names of LHS of the assignment */ + Expr *pExpr /* Vector expression to be appended. Might be NULL */ +){ + sqlite3 *db = pParse->db; + int n; + int i; + int iFirst = pList ? pList->nExpr : 0; + /* pColumns can only be NULL due to an OOM but an OOM will cause an + ** exit prior to this routine being invoked */ + if( NEVER(pColumns==0) ) goto vector_append_error; + if( pExpr==0 ) goto vector_append_error; + + /* If the RHS is a vector, then we can immediately check to see that + ** the size of the RHS and LHS match. But if the RHS is a SELECT, + ** wildcards ("*") in the result set of the SELECT must be expanded before + ** we can do the size check, so defer the size check until code generation. + */ + if( pExpr->op!=TK_SELECT && pColumns->nId!=(n=sqlite3ExprVectorSize(pExpr)) ){ + sqlite3ErrorMsg(pParse, "%d columns assigned %d values", + pColumns->nId, n); + goto vector_append_error; + } + + for(i=0; inId; i++){ + Expr *pSubExpr = sqlite3ExprForVectorField(pParse, pExpr, i); + pList = sqlite3ExprListAppend(pParse, pList, pSubExpr); + if( pList ){ + assert( pList->nExpr==iFirst+i+1 ); + pList->a[pList->nExpr-1].zName = pColumns->a[i].zName; + pColumns->a[i].zName = 0; + } + } + + if( pExpr->op==TK_SELECT ){ + if( pList && pList->a[iFirst].pExpr ){ + Expr *pFirst = pList->a[iFirst].pExpr; + assert( pFirst->op==TK_SELECT_COLUMN ); + + /* Store the SELECT statement in pRight so it will be deleted when + ** sqlite3ExprListDelete() is called */ + pFirst->pRight = pExpr; + pExpr = 0; + + /* Remember the size of the LHS in iTable so that we can check that + ** the RHS and LHS sizes match during code generation. */ + pFirst->iTable = pColumns->nId; + } + } + +vector_append_error: + sqlite3ExprDelete(db, pExpr); + sqlite3IdListDelete(db, pColumns); + return pList; +} + +/* +** Set the sort order for the last element on the given ExprList. +*/ +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder){ + if( p==0 ) return; + assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC>=0 && SQLITE_SO_DESC>0 ); + assert( p->nExpr>0 ); + if( iSortOrder<0 ){ + assert( p->a[p->nExpr-1].sortOrder==SQLITE_SO_ASC ); + return; + } + p->a[p->nExpr-1].sortOrder = (u8)iSortOrder; +} + /* ** Set the ExprList.a[].zName element of the most recently added item ** on the expression list. @@ -77576,7 +92116,7 @@ SQLITE_PRIVATE void sqlite3ExprListSetName( pItem = &pList->a[pList->nExpr-1]; assert( pItem->zName==0 ); pItem->zName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n); - if( dequote && pItem->zName ) sqlite3Dequote(pItem->zName); + if( dequote ) sqlite3Dequote(pItem->zName); } } @@ -77625,10 +92165,9 @@ SQLITE_PRIVATE void sqlite3ExprListCheckLength( /* ** Delete an entire expression list. */ -SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){ +static SQLITE_NOINLINE void exprListDeleteNN(sqlite3 *db, ExprList *pList){ int i; struct ExprList_item *pItem; - if( pList==0 ) return; assert( pList->a!=0 || pList->nExpr==0 ); for(pItem=pList->a, i=0; inExpr; i++, pItem++){ sqlite3ExprDelete(db, pItem->pExpr); @@ -77638,39 +92177,73 @@ SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){ sqlite3DbFree(db, pList->a); sqlite3DbFree(db, pList); } +SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){ + if( pList ) exprListDeleteNN(db, pList); +} /* -** These routines are Walker callbacks. Walker.u.pi is a pointer -** to an integer. These routines are checking an expression to see -** if it is a constant. Set *Walker.u.pi to 0 if the expression is -** not constant. +** Return the bitwise-OR of all Expr.flags fields in the given +** ExprList. +*/ +SQLITE_PRIVATE u32 sqlite3ExprListFlags(const ExprList *pList){ + int i; + u32 m = 0; + if( pList ){ + for(i=0; inExpr; i++){ + Expr *pExpr = pList->a[i].pExpr; + assert( pExpr!=0 ); + m |= pExpr->flags; + } + } + return m; +} + +/* +** These routines are Walker callbacks used to check expressions to +** see if they are "constant" for some definition of constant. The +** Walker.eCode value determines the type of "constant" we are looking +** for. ** ** These callback routines are used to implement the following: ** -** sqlite3ExprIsConstant() -** sqlite3ExprIsConstantNotJoin() -** sqlite3ExprIsConstantOrFunction() +** sqlite3ExprIsConstant() pWalker->eCode==1 +** sqlite3ExprIsConstantNotJoin() pWalker->eCode==2 +** sqlite3ExprIsTableConstant() pWalker->eCode==3 +** sqlite3ExprIsConstantOrFunction() pWalker->eCode==4 or 5 ** +** In all cases, the callbacks set Walker.eCode=0 and abort if the expression +** is found to not be a constant. +** +** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions +** in a CREATE TABLE statement. The Walker.eCode value is 5 when parsing +** an existing schema and 4 when processing a new statement. A bound +** parameter raises an error for new statements, but is silently converted +** to NULL for existing schemas. This allows sqlite_master tables that +** contain a bound parameter because they were generated by older versions +** of SQLite to be parsed by newer versions of SQLite without raising a +** malformed schema error. */ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ - /* If pWalker->u.i is 3 then any term of the expression that comes from - ** the ON or USING clauses of a join disqualifies the expression + /* If pWalker->eCode is 2 then any term of the expression that comes from + ** the ON or USING clauses of a left join disqualifies the expression ** from being considered constant. */ - if( pWalker->u.i==3 && ExprHasProperty(pExpr, EP_FromJoin) ){ - pWalker->u.i = 0; + if( pWalker->eCode==2 && ExprHasProperty(pExpr, EP_FromJoin) ){ + pWalker->eCode = 0; return WRC_Abort; } switch( pExpr->op ){ /* Consider functions to be constant if all their arguments are constant - ** and either pWalker->u.i==2 or the function as the SQLITE_FUNC_CONST - ** flag. */ + ** and either pWalker->eCode==4 or 5 or the function has the + ** SQLITE_FUNC_CONST flag. */ case TK_FUNCTION: - if( pWalker->u.i==2 || ExprHasProperty(pExpr,EP_Constant) ){ + if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){ return WRC_Continue; + }else{ + pWalker->eCode = 0; + return WRC_Abort; } - /* Fall through */ case TK_ID: case TK_COLUMN: case TK_AGG_FUNCTION: @@ -77679,8 +92252,25 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ testcase( pExpr->op==TK_COLUMN ); testcase( pExpr->op==TK_AGG_FUNCTION ); testcase( pExpr->op==TK_AGG_COLUMN ); - pWalker->u.i = 0; - return WRC_Abort; + if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){ + return WRC_Continue; + }else{ + pWalker->eCode = 0; + return WRC_Abort; + } + case TK_VARIABLE: + if( pWalker->eCode==5 ){ + /* Silently convert bound parameters that appear inside of CREATE + ** statements into a NULL when parsing the CREATE statement text out + ** of the sqlite_master table */ + pExpr->op = TK_NULL; + }else if( pWalker->eCode==4 ){ + /* A bound parameter in a CREATE statement that originates from + ** sqlite3_prepare() causes an error */ + pWalker->eCode = 0; + return WRC_Abort; + } + /* Fall through */ default: testcase( pExpr->op==TK_SELECT ); /* selectNodeIsConstant will disallow */ testcase( pExpr->op==TK_EXISTS ); /* selectNodeIsConstant will disallow */ @@ -77689,21 +92279,22 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ } static int selectNodeIsConstant(Walker *pWalker, Select *NotUsed){ UNUSED_PARAMETER(NotUsed); - pWalker->u.i = 0; + pWalker->eCode = 0; return WRC_Abort; } -static int exprIsConst(Expr *p, int initFlag){ +static int exprIsConst(Expr *p, int initFlag, int iCur){ Walker w; memset(&w, 0, sizeof(w)); - w.u.i = initFlag; + w.eCode = initFlag; w.xExprCallback = exprNodeIsConstant; w.xSelectCallback = selectNodeIsConstant; + w.u.iCur = iCur; sqlite3WalkExpr(&w, p); - return w.u.i; + return w.eCode; } /* -** Walk an expression tree. Return 1 if the expression is constant +** Walk an expression tree. Return non-zero if the expression is constant ** and 0 if it involves variables or function calls. ** ** For the purposes of this function, a double-quoted string (ex: "abc") @@ -77711,21 +92302,31 @@ static int exprIsConst(Expr *p, int initFlag){ ** a constant. */ SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr *p){ - return exprIsConst(p, 1); + return exprIsConst(p, 1, 0); } /* -** Walk an expression tree. Return 1 if the expression is constant +** Walk an expression tree. Return non-zero if the expression is constant ** that does no originate from the ON or USING clauses of a join. ** Return 0 if it involves variables or function calls or terms from ** an ON or USING clause. */ SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){ - return exprIsConst(p, 3); + return exprIsConst(p, 2, 0); } /* -** Walk an expression tree. Return 1 if the expression is constant +** Walk an expression tree. Return non-zero if the expression is constant +** for any single row of the table with cursor iCur. In other words, the +** expression must not refer to any non-deterministic function nor any +** table other than iCur. +*/ +SQLITE_PRIVATE int sqlite3ExprIsTableConstant(Expr *p, int iCur){ + return exprIsConst(p, 3, iCur); +} + +/* +** Walk an expression tree. Return non-zero if the expression is constant ** or a function call with constant arguments. Return and 0 if there ** are any variables. ** @@ -77733,10 +92334,27 @@ SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){ ** is considered a variable but a single-quoted string (ex: 'abc') is ** a constant. */ -SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr *p){ - return exprIsConst(p, 2); +SQLITE_PRIVATE int sqlite3ExprIsConstantOrFunction(Expr *p, u8 isInit){ + assert( isInit==0 || isInit==1 ); + return exprIsConst(p, 4+isInit, 0); } +#ifdef SQLITE_ENABLE_CURSOR_HINTS +/* +** Walk an expression tree. Return 1 if the expression contains a +** subquery of some kind. Return 0 if there are no subqueries. +*/ +SQLITE_PRIVATE int sqlite3ExprContainsSubquery(Expr *p){ + Walker w; + memset(&w, 0, sizeof(w)); + w.eCode = 1; + w.xExprCallback = sqlite3ExprWalkNoop; + w.xSelectCallback = selectNodeIsConstant; + sqlite3WalkExpr(&w, p); + return w.eCode==0; +} +#endif + /* ** If the expression p codes a constant integer that is small enough ** to fit in a 32-bit integer, return 1 and put the value of the integer @@ -77799,29 +92417,15 @@ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){ case TK_FLOAT: case TK_BLOB: return 0; + case TK_COLUMN: + assert( p->pTab!=0 ); + return ExprHasProperty(p, EP_CanBeNull) || + (p->iColumn>=0 && p->pTab->aCol[p->iColumn].notNull==0); default: return 1; } } -/* -** Generate an OP_IsNull instruction that tests register iReg and jumps -** to location iDest if the value in iReg is NULL. The value in iReg -** was computed by pExpr. If we can look at pExpr at compile-time and -** determine that it can never generate a NULL, then the OP_IsNull operation -** can be omitted. -*/ -SQLITE_PRIVATE void sqlite3ExprCodeIsNullJump( - Vdbe *v, /* The VDBE under construction */ - const Expr *pExpr, /* Only generate OP_IsNull if this expr can be NULL */ - int iReg, /* Test the value in this register for NULL */ - int iDest /* Jump here if the value is null */ -){ - if( sqlite3ExprCanBeNull(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iDest); - } -} - /* ** Return TRUE if the given expression is a constant which would be ** unchanged by OP_Affinity with the affinity given in the second @@ -77834,7 +92438,7 @@ SQLITE_PRIVATE void sqlite3ExprCodeIsNullJump( */ SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr *p, char aff){ u8 op; - if( aff==SQLITE_AFF_NONE ) return 1; + if( aff==SQLITE_AFF_BLOB ) return 1; while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; } op = p->op; if( op==TK_REGISTER ) op = p->op2; @@ -77873,23 +92477,22 @@ SQLITE_PRIVATE int sqlite3IsRowid(const char *z){ } /* -** Return true if we are able to the IN operator optimization on a -** query of the form -** -** x IN (SELECT ...) -** -** Where the SELECT... clause is as specified by the parameter to this -** routine. -** -** The Select object passed in has already been preprocessed and no -** errors have been found. +** pX is the RHS of an IN operator. If pX is a SELECT statement +** that can be simplified to a direct table access, then return +** a pointer to the SELECT statement. If pX is not a SELECT statement, +** or if the SELECT statement needs to be manifested into a transient +** table, then return NULL. */ #ifndef SQLITE_OMIT_SUBQUERY -static int isCandidateForInOpt(Select *p){ +static Select *isCandidateForInOpt(Expr *pX){ + Select *p; SrcList *pSrc; ExprList *pEList; Table *pTab; - if( p==0 ) return 0; /* right-hand side of IN is SELECT */ + int i; + if( !ExprHasProperty(pX, EP_xIsSelect) ) return 0; /* Not a subquery */ + if( ExprHasProperty(pX, EP_VarSelect) ) return 0; /* Correlated subq */ + p = pX->x.pSelect; if( p->pPrior ) return 0; /* Not a compound SELECT */ if( p->selFlags & (SF_Distinct|SF_Aggregate) ){ testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ); @@ -77905,24 +92508,56 @@ static int isCandidateForInOpt(Select *p){ if( pSrc->nSrc!=1 ) return 0; /* Single term in FROM clause */ if( pSrc->a[0].pSelect ) return 0; /* FROM is not a subquery or view */ pTab = pSrc->a[0].pTab; - if( NEVER(pTab==0) ) return 0; + assert( pTab!=0 ); assert( pTab->pSelect==0 ); /* FROM clause is not a view */ if( IsVirtual(pTab) ) return 0; /* FROM clause not a virtual table */ pEList = p->pEList; - if( pEList->nExpr!=1 ) return 0; /* One column in the result set */ - if( pEList->a[0].pExpr->op!=TK_COLUMN ) return 0; /* Result is a column */ - return 1; + assert( pEList!=0 ); + /* All SELECT results must be columns. */ + for(i=0; inExpr; i++){ + Expr *pRes = pEList->a[i].pExpr; + if( pRes->op!=TK_COLUMN ) return 0; + assert( pRes->iTable==pSrc->a[0].iCursor ); /* Not a correlated subquery */ + } + return p; } #endif /* SQLITE_OMIT_SUBQUERY */ +#ifndef SQLITE_OMIT_SUBQUERY /* -** Code an OP_Once instruction and allocate space for its flag. Return the -** address of the new instruction. +** Generate code that checks the left-most column of index table iCur to see if +** it contains any NULL entries. Cause the register at regHasNull to be set +** to a non-NULL value if iCur contains no NULLs. Cause register regHasNull +** to be set to NULL if iCur contains one or more NULL values. */ -SQLITE_PRIVATE int sqlite3CodeOnce(Parse *pParse){ - Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */ - return sqlite3VdbeAddOp1(v, OP_Once, pParse->nOnce++); +static void sqlite3SetHasNullFlag(Vdbe *v, int iCur, int regHasNull){ + int addr1; + sqlite3VdbeAddOp2(v, OP_Integer, 0, regHasNull); + addr1 = sqlite3VdbeAddOp1(v, OP_Rewind, iCur); VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Column, iCur, 0, regHasNull); + sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); + VdbeComment((v, "first_entry_in(%d)", iCur)); + sqlite3VdbeJumpHere(v, addr1); } +#endif + + +#ifndef SQLITE_OMIT_SUBQUERY +/* +** The argument is an IN operator with a list (not a subquery) on the +** right-hand side. Return TRUE if that list is constant. +*/ +static int sqlite3InRhsIsConstant(Expr *pIn){ + Expr *pLHS; + int res; + assert( !ExprHasProperty(pIn, EP_xIsSelect) ); + pLHS = pIn->pLeft; + pIn->pLeft = 0; + res = sqlite3ExprIsConstant(pIn); + pIn->pLeft = pLHS; + return res; +} +#endif /* ** This function is used by the implementation of the IN (...) operator. @@ -77933,7 +92568,7 @@ SQLITE_PRIVATE int sqlite3CodeOnce(Parse *pParse){ ** be used either to test for membership in the RHS set or to iterate through ** all members of the RHS set, skipping duplicates. ** -** A cursor is opened on the b-tree object that the RHS of the IN operator +** A cursor is opened on the b-tree object that is the RHS of the IN operator ** and pX->iTable is set to the index of that cursor. ** ** The returned value of this function indicates the b-tree type, as follows: @@ -77943,95 +92578,126 @@ SQLITE_PRIVATE int sqlite3CodeOnce(Parse *pParse){ ** IN_INDEX_INDEX_DESC - The cursor was opened on a descending index. ** IN_INDEX_EPH - The cursor was opened on a specially created and ** populated epheremal table. +** IN_INDEX_NOOP - No cursor was allocated. The IN operator must be +** implemented as a sequence of comparisons. ** ** An existing b-tree might be used if the RHS expression pX is a simple ** subquery such as: ** -** SELECT FROM +** SELECT , ... FROM
    ** ** If the RHS of the IN operator is a list or a more complex subquery, then ** an ephemeral table might need to be generated from the RHS and then -** pX->iTable made to point to the ephermeral table instead of an -** existing table. +** pX->iTable made to point to the ephemeral table instead of an +** existing table. ** -** If the prNotFound parameter is 0, then the b-tree will be used to iterate -** through the set members, skipping any duplicates. In this case an -** epheremal table must be used unless the selected is guaranteed -** to be unique - either because it is an INTEGER PRIMARY KEY or it -** has a UNIQUE constraint or UNIQUE index. +** The inFlags parameter must contain exactly one of the bits +** IN_INDEX_MEMBERSHIP or IN_INDEX_LOOP. If inFlags contains +** IN_INDEX_MEMBERSHIP, then the generated table will be used for a +** fast membership test. When the IN_INDEX_LOOP bit is set, the +** IN index will be used to loop over all values of the RHS of the +** IN operator. ** -** If the prNotFound parameter is not 0, then the b-tree will be used -** for fast set membership tests. In this case an epheremal table must -** be used unless is an INTEGER PRIMARY KEY or an index can -** be found with as its left-most column. +** When IN_INDEX_LOOP is used (and the b-tree will be used to iterate +** through the set members) then the b-tree must not contain duplicates. +** An epheremal table must be used unless the selected columns are guaranteed +** to be unique - either because it is an INTEGER PRIMARY KEY or due to +** a UNIQUE constraint or index. +** +** When IN_INDEX_MEMBERSHIP is used (and the b-tree will be used +** for fast set membership tests) then an epheremal table must +** be used unless is a single INTEGER PRIMARY KEY column or an +** index can be found with the specified as its left-most. +** +** If the IN_INDEX_NOOP_OK and IN_INDEX_MEMBERSHIP are both set and +** if the RHS of the IN operator is a list (not a subquery) then this +** routine might decide that creating an ephemeral b-tree for membership +** testing is too expensive and return IN_INDEX_NOOP. In that case, the +** calling routine should implement the IN operator using a sequence +** of Eq or Ne comparison operations. ** ** When the b-tree is being used for membership tests, the calling function -** needs to know whether or not the structure contains an SQL NULL -** value in order to correctly evaluate expressions like "X IN (Y, Z)". -** If there is any chance that the (...) might contain a NULL value at +** might need to know whether or not the RHS side of the IN operator +** contains a NULL. If prRhsHasNull is not a NULL pointer and +** if there is any chance that the (...) might contain a NULL value at ** runtime, then a register is allocated and the register number written -** to *prNotFound. If there is no chance that the (...) contains a -** NULL value, then *prNotFound is left unchanged. +** to *prRhsHasNull. If there is no chance that the (...) contains a +** NULL value, then *prRhsHasNull is left unchanged. ** -** If a register is allocated and its location stored in *prNotFound, then -** its initial value is NULL. If the (...) does not remain constant -** for the duration of the query (i.e. the SELECT within the (...) -** is a correlated subquery) then the value of the allocated register is -** reset to NULL each time the subquery is rerun. This allows the -** caller to use vdbe code equivalent to the following: +** If a register is allocated and its location stored in *prRhsHasNull, then +** the value in that register will be NULL if the b-tree contains one or more +** NULL values, and it will be some non-NULL value if the b-tree contains no +** NULL values. ** -** if( register==NULL ){ -** has_null = -** register = 1 -** } +** If the aiMap parameter is not NULL, it must point to an array containing +** one element for each column returned by the SELECT statement on the RHS +** of the IN(...) operator. The i'th entry of the array is populated with the +** offset of the index column that matches the i'th column returned by the +** SELECT. For example, if the expression and selected index are: ** -** in order to avoid running the -** test more often than is necessary. +** (?,?,?) IN (SELECT a, b, c FROM t1) +** CREATE INDEX i1 ON t1(b, c, a); +** +** then aiMap[] is populated with {2, 0, 1}. */ #ifndef SQLITE_OMIT_SUBQUERY -SQLITE_PRIVATE int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){ +SQLITE_PRIVATE int sqlite3FindInIndex( + Parse *pParse, /* Parsing context */ + Expr *pX, /* The right-hand side (RHS) of the IN operator */ + u32 inFlags, /* IN_INDEX_LOOP, _MEMBERSHIP, and/or _NOOP_OK */ + int *prRhsHasNull, /* Register holding NULL status. See notes */ + int *aiMap /* Mapping from Index fields to RHS fields */ +){ Select *p; /* SELECT to the right of IN operator */ int eType = 0; /* Type of RHS table. IN_INDEX_* */ int iTab = pParse->nTab++; /* Cursor of the RHS table */ - int mustBeUnique = (prNotFound==0); /* True if RHS must be unique */ + int mustBeUnique; /* True if RHS must be unique */ Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */ assert( pX->op==TK_IN ); + mustBeUnique = (inFlags & IN_INDEX_LOOP)!=0; + + /* If the RHS of this IN(...) operator is a SELECT, and if it matters + ** whether or not the SELECT result contains NULL values, check whether + ** or not NULL is actually possible (it may not be, for example, due + ** to NOT NULL constraints in the schema). If no NULL values are possible, + ** set prRhsHasNull to 0 before continuing. */ + if( prRhsHasNull && (pX->flags & EP_xIsSelect) ){ + int i; + ExprList *pEList = pX->x.pSelect->pEList; + for(i=0; inExpr; i++){ + if( sqlite3ExprCanBeNull(pEList->a[i].pExpr) ) break; + } + if( i==pEList->nExpr ){ + prRhsHasNull = 0; + } + } /* Check to see if an existing table or index can be used to ** satisfy the query. This is preferable to generating a new - ** ephemeral table. - */ - p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0); - if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){ + ** ephemeral table. */ + if( pParse->nErr==0 && (p = isCandidateForInOpt(pX))!=0 ){ sqlite3 *db = pParse->db; /* Database connection */ Table *pTab; /* Table
    . */ - Expr *pExpr; /* Expression */ - i16 iCol; /* Index of column */ i16 iDb; /* Database idx for pTab */ + ExprList *pEList = p->pEList; + int nExpr = pEList->nExpr; - assert( p ); /* Because of isCandidateForInOpt(p) */ assert( p->pEList!=0 ); /* Because of isCandidateForInOpt(p) */ assert( p->pEList->a[0].pExpr!=0 ); /* Because of isCandidateForInOpt(p) */ assert( p->pSrc!=0 ); /* Because of isCandidateForInOpt(p) */ pTab = p->pSrc->a[0].pTab; - pExpr = p->pEList->a[0].pExpr; - iCol = (i16)pExpr->iColumn; - - /* Code an OP_VerifyCookie and OP_TableLock for
    . */ + + /* Code an OP_Transaction and OP_TableLock for
    . */ iDb = sqlite3SchemaToIndex(db, pTab->pSchema); sqlite3CodeVerifySchema(pParse, iDb); sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); - /* This function is only called from two places. In both cases the vdbe - ** has already been allocated. So assume sqlite3GetVdbe() is always - ** successful here. - */ - assert(v); - if( iCol<0 ){ - int iAddr; - - iAddr = sqlite3CodeOnce(pParse); + assert(v); /* sqlite3GetVdbe() has always been previously called */ + if( nExpr==1 && pEList->a[0].pExpr->iColumn<0 ){ + /* The "x IN (SELECT rowid FROM table)" case */ + int iAddr = sqlite3VdbeAddOp0(v, OP_Once); + VdbeCoverage(v); sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead); eType = IN_INDEX_ROWID; @@ -78039,66 +92705,224 @@ SQLITE_PRIVATE int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){ sqlite3VdbeJumpHere(v, iAddr); }else{ Index *pIdx; /* Iterator variable */ + int affinity_ok = 1; + int i; - /* The collation sequence used by the comparison. If an index is to - ** be used in place of a temp-table, it must be ordered according - ** to this collation sequence. */ - CollSeq *pReq = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pExpr); - - /* Check that the affinity that will be used to perform the - ** comparison is the same as the affinity of the column. If - ** it is not, it is not possible to use any index. - */ - int affinity_ok = sqlite3IndexAffinityOk(pX, pTab->aCol[iCol].affinity); - - for(pIdx=pTab->pIndex; pIdx && eType==0 && affinity_ok; pIdx=pIdx->pNext){ - if( (pIdx->aiColumn[0]==iCol) - && sqlite3FindCollSeq(db, ENC(db), pIdx->azColl[0], 0)==pReq - && (!mustBeUnique || (pIdx->nKeyCol==1 && pIdx->onError!=OE_None)) - ){ - int iAddr = sqlite3CodeOnce(pParse); - sqlite3VdbeAddOp3(v, OP_OpenRead, iTab, pIdx->tnum, iDb); - sqlite3VdbeSetP4KeyInfo(pParse, pIdx); - VdbeComment((v, "%s", pIdx->zName)); - assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 ); - eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0]; - - sqlite3VdbeJumpHere(v, iAddr); - if( prNotFound && !pTab->aCol[iCol].notNull ){ - *prNotFound = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound); - } + /* Check that the affinity that will be used to perform each + ** comparison is the same as the affinity of each column in table + ** on the RHS of the IN operator. If it not, it is not possible to + ** use any index of the RHS table. */ + for(i=0; ipLeft, i); + int iCol = pEList->a[i].pExpr->iColumn; + char idxaff = sqlite3TableColumnAffinity(pTab,iCol); /* RHS table */ + char cmpaff = sqlite3CompareAffinity(pLhs, idxaff); + testcase( cmpaff==SQLITE_AFF_BLOB ); + testcase( cmpaff==SQLITE_AFF_TEXT ); + switch( cmpaff ){ + case SQLITE_AFF_BLOB: + break; + case SQLITE_AFF_TEXT: + /* sqlite3CompareAffinity() only returns TEXT if one side or the + ** other has no affinity and the other side is TEXT. Hence, + ** the only way for cmpaff to be TEXT is for idxaff to be TEXT + ** and for the term on the LHS of the IN to have no affinity. */ + assert( idxaff==SQLITE_AFF_TEXT ); + break; + default: + affinity_ok = sqlite3IsNumericAffinity(idxaff); } } - } + + if( affinity_ok ){ + /* Search for an existing index that will work for this IN operator */ + for(pIdx=pTab->pIndex; pIdx && eType==0; pIdx=pIdx->pNext){ + Bitmask colUsed; /* Columns of the index used */ + Bitmask mCol; /* Mask for the current column */ + if( pIdx->nColumnnColumn==BMS-2 ); + testcase( pIdx->nColumn==BMS-1 ); + if( pIdx->nColumn>=BMS-1 ) continue; + if( mustBeUnique ){ + if( pIdx->nKeyCol>nExpr + ||(pIdx->nColumn>nExpr && !IsUniqueIndex(pIdx)) + ){ + continue; /* This index is not unique over the IN RHS columns */ + } + } + + colUsed = 0; /* Columns of index used so far */ + for(i=0; ipLeft, i); + Expr *pRhs = pEList->a[i].pExpr; + CollSeq *pReq = sqlite3BinaryCompareCollSeq(pParse, pLhs, pRhs); + int j; + + assert( pReq!=0 || pRhs->iColumn==XN_ROWID || pParse->nErr ); + for(j=0; jaiColumn[j]!=pRhs->iColumn ) continue; + assert( pIdx->azColl[j] ); + if( pReq!=0 && sqlite3StrICmp(pReq->zName, pIdx->azColl[j])!=0 ){ + continue; + } + break; + } + if( j==nExpr ) break; + mCol = MASKBIT(j); + if( mCol & colUsed ) break; /* Each column used only once */ + colUsed |= mCol; + if( aiMap ) aiMap[i] = j; + } + + assert( i==nExpr || colUsed!=(MASKBIT(nExpr)-1) ); + if( colUsed==(MASKBIT(nExpr)-1) ){ + /* If we reach this point, that means the index pIdx is usable */ + int iAddr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); +#ifndef SQLITE_OMIT_EXPLAIN + sqlite3VdbeAddOp4(v, OP_Explain, 0, 0, 0, + sqlite3MPrintf(db, "USING INDEX %s FOR IN-OPERATOR",pIdx->zName), + P4_DYNAMIC); +#endif + sqlite3VdbeAddOp3(v, OP_OpenRead, iTab, pIdx->tnum, iDb); + sqlite3VdbeSetP4KeyInfo(pParse, pIdx); + VdbeComment((v, "%s", pIdx->zName)); + assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 ); + eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0]; + + if( prRhsHasNull ){ +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK + i64 mask = (1<nMem; + if( nExpr==1 ){ + sqlite3SetHasNullFlag(v, iTab, *prRhsHasNull); + } + } + sqlite3VdbeJumpHere(v, iAddr); + } + } /* End loop over indexes */ + } /* End if( affinity_ok ) */ + } /* End if not an rowid index */ + } /* End attempt to optimize using an index */ + + /* If no preexisting index is available for the IN clause + ** and IN_INDEX_NOOP is an allowed reply + ** and the RHS of the IN operator is a list, not a subquery + ** and the RHS is not constant or has two or fewer terms, + ** then it is not worth creating an ephemeral table to evaluate + ** the IN operator so return IN_INDEX_NOOP. + */ + if( eType==0 + && (inFlags & IN_INDEX_NOOP_OK) + && !ExprHasProperty(pX, EP_xIsSelect) + && (!sqlite3InRhsIsConstant(pX) || pX->x.pList->nExpr<=2) + ){ + eType = IN_INDEX_NOOP; } if( eType==0 ){ - /* Could not found an existing table or index to use as the RHS b-tree. + /* Could not find an existing table or index to use as the RHS b-tree. ** We will have to generate an ephemeral table to do the job. */ u32 savedNQueryLoop = pParse->nQueryLoop; int rMayHaveNull = 0; eType = IN_INDEX_EPH; - if( prNotFound ){ - *prNotFound = rMayHaveNull = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Null, 0, *prNotFound); - }else{ - testcase( pParse->nQueryLoop>0 ); + if( inFlags & IN_INDEX_LOOP ){ pParse->nQueryLoop = 0; if( pX->pLeft->iColumn<0 && !ExprHasProperty(pX, EP_xIsSelect) ){ eType = IN_INDEX_ROWID; } + }else if( prRhsHasNull ){ + *prRhsHasNull = rMayHaveNull = ++pParse->nMem; } sqlite3CodeSubselect(pParse, pX, rMayHaveNull, eType==IN_INDEX_ROWID); pParse->nQueryLoop = savedNQueryLoop; }else{ pX->iTable = iTab; } + + if( aiMap && eType!=IN_INDEX_INDEX_ASC && eType!=IN_INDEX_INDEX_DESC ){ + int i, n; + n = sqlite3ExprVectorSize(pX->pLeft); + for(i=0; ipLeft; + int nVal = sqlite3ExprVectorSize(pLeft); + Select *pSelect = (pExpr->flags & EP_xIsSelect) ? pExpr->x.pSelect : 0; + char *zRet; + + assert( pExpr->op==TK_IN ); + zRet = sqlite3DbMallocZero(pParse->db, nVal+1); + if( zRet ){ + int i; + for(i=0; ipEList->a[i].pExpr, a); + }else{ + zRet[i] = a; + } + } + zRet[nVal] = '\0'; + } + return zRet; +} +#endif + +#ifndef SQLITE_OMIT_SUBQUERY +/* +** Load the Parse object passed as the first argument with an error +** message of the form: +** +** "sub-select returns N columns - expected M" +*/ +SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpect){ + const char *zFmt = "sub-select returns %d columns - expected %d"; + sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect); +} +#endif + +/* +** Expression pExpr is a vector that has been used in a context where +** it is not permitted. If pExpr is a sub-select vector, this routine +** loads the Parse object with a message of the form: +** +** "sub-select returns N columns - expected 1" +** +** Or, if it is a regular scalar vector: +** +** "row value misused" +*/ +SQLITE_PRIVATE void sqlite3VectorErrorMsg(Parse *pParse, Expr *pExpr){ +#ifndef SQLITE_OMIT_SUBQUERY + if( pExpr->flags & EP_xIsSelect ){ + sqlite3SubselectError(pParse, pExpr->x.pSelect->pEList->nExpr, 1); + }else +#endif + { + sqlite3ErrorMsg(pParse, "row value misused"); + } +} + /* ** Generate code for scalar subqueries used as a subquery expression, EXISTS, ** or IN operators. Examples: @@ -78119,34 +92943,30 @@ SQLITE_PRIVATE int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){ ** ** If rMayHaveNull is non-zero, that means that the operation is an IN ** (not a SELECT or EXISTS) and that the RHS might contains NULLs. -** Furthermore, the IN is in a WHERE clause and that we really want -** to iterate over the RHS of the IN operator in order to quickly locate -** all corresponding LHS elements. All this routine does is initialize -** the register given by rMayHaveNull to NULL. Calling routines will take -** care of changing this register value to non-NULL if the RHS is NULL-free. -** -** If rMayHaveNull is zero, that means that the subquery is being used -** for membership testing only. There is no need to initialize any -** registers to indicate the presence or absence of NULLs on the RHS. +** All this routine does is initialize the register given by rMayHaveNull +** to NULL. Calling routines will take care of changing this register +** value to non-NULL if the RHS is NULL-free. ** ** For a SELECT or EXISTS operator, return the register that holds the -** result. For IN operators or if an error occurs, the return value is 0. +** result. For a multi-column SELECT, the result is stored in a contiguous +** array of registers and the return value is the register of the left-most +** result column. Return 0 for IN operators or if an error occurs. */ #ifndef SQLITE_OMIT_SUBQUERY SQLITE_PRIVATE int sqlite3CodeSubselect( Parse *pParse, /* Parsing context */ Expr *pExpr, /* The IN, SELECT, or EXISTS operator */ - int rMayHaveNull, /* Register that records whether NULLs exist in RHS */ + int rHasNullFlag, /* Register that records whether NULLs exist in RHS */ int isRowid /* If true, LHS of IN operator is a rowid */ ){ - int testAddr = -1; /* One-time test address */ + int jmpIfDynamic = -1; /* One-time test address */ int rReg = 0; /* Register storing resulting */ Vdbe *v = sqlite3GetVdbe(pParse); if( NEVER(v==0) ) return 0; sqlite3ExprCachePush(pParse); - /* This code must be run in its entirety every time it is encountered - ** if any of the following is true: + /* The evaluation of the IN/EXISTS/SELECT must be repeated every time it + ** is encountered if any of the following is true: ** ** * The right-hand side is a correlated subquery ** * The right-hand side is an expression list containing variables @@ -78156,14 +92976,15 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** save the results, and reuse the same result on subsequent invocations. */ if( !ExprHasProperty(pExpr, EP_VarSelect) ){ - testAddr = sqlite3CodeOnce(pParse); + jmpIfDynamic = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); } #ifndef SQLITE_OMIT_EXPLAIN if( pParse->explain==2 ){ - char *zMsg = sqlite3MPrintf( - pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr>=0?"":"CORRELATED ", - pExpr->op==TK_IN?"LIST":"SCALAR", pParse->iNextSelectId + char *zMsg = sqlite3MPrintf(pParse->db, "EXECUTE %s%s SUBQUERY %d", + jmpIfDynamic>=0?"":"CORRELATED ", + pExpr->op==TK_IN?"LIST":"SCALAR", + pParse->iNextSelectId ); sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC); } @@ -78171,21 +92992,18 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( switch( pExpr->op ){ case TK_IN: { - char affinity; /* Affinity of the LHS of the IN */ int addr; /* Address of OP_OpenEphemeral instruction */ Expr *pLeft = pExpr->pLeft; /* the LHS of the IN operator */ KeyInfo *pKeyInfo = 0; /* Key information */ - - if( rMayHaveNull ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, rMayHaveNull); - } - - affinity = sqlite3ExprAffinity(pLeft); + int nVal; /* Size of vector pLeft */ + + nVal = sqlite3ExprVectorSize(pLeft); + assert( !isRowid || nVal==1 ); /* Whether this is an 'x IN(SELECT...)' or an 'x IN()' ** expression it is handled the same way. An ephemeral table is - ** filled with single-field index keys representing the results - ** from the SELECT or the . + ** filled with index keys representing the results from the + ** SELECT or the . ** ** If the 'x' expression is a column value, or the SELECT... ** statement returns a column value, then the affinity of that @@ -78196,9 +93014,9 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** is used. */ pExpr->iTable = pParse->nTab++; - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pExpr->iTable, !isRowid); - if( rMayHaveNull==0 ) sqlite3VdbeChangeP5(v, BTREE_UNORDERED); - pKeyInfo = isRowid ? 0 : sqlite3KeyInfoAlloc(pParse->db, 1, 1); + addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, + pExpr->iTable, (isRowid?0:nVal)); + pKeyInfo = isRowid ? 0 : sqlite3KeyInfoAlloc(pParse->db, nVal, 1); if( ExprHasProperty(pExpr, EP_xIsSelect) ){ /* Case 1: expr IN (SELECT ...) @@ -78206,26 +93024,38 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** Generate code to write the results of the select into the temporary ** table allocated and opened above. */ - SelectDest dest; - ExprList *pEList; + Select *pSelect = pExpr->x.pSelect; + ExprList *pEList = pSelect->pEList; assert( !isRowid ); - sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable); - dest.affSdst = (u8)affinity; - assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable ); - pExpr->x.pSelect->iLimit = 0; - testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */ - if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){ - sqlite3KeyInfoUnref(pKeyInfo); - return 0; + /* If the LHS and RHS of the IN operator do not match, that + ** error will have been caught long before we reach this point. */ + if( ALWAYS(pEList->nExpr==nVal) ){ + SelectDest dest; + int i; + sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable); + dest.zAffSdst = exprINAffinity(pParse, pExpr); + assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable ); + pSelect->iLimit = 0; + testcase( pSelect->selFlags & SF_Distinct ); + testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */ + if( sqlite3Select(pParse, pSelect, &dest) ){ + sqlite3DbFree(pParse->db, dest.zAffSdst); + sqlite3KeyInfoUnref(pKeyInfo); + return 0; + } + sqlite3DbFree(pParse->db, dest.zAffSdst); + assert( pKeyInfo!=0 ); /* OOM will cause exit after sqlite3Select() */ + assert( pEList!=0 ); + assert( pEList->nExpr>0 ); + assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); + for(i=0; iaColl[i] = sqlite3BinaryCompareCollSeq( + pParse, p, pEList->a[i].pExpr + ); + } } - pEList = pExpr->x.pSelect->pEList; - assert( pKeyInfo!=0 ); /* OOM will cause exit after sqlite3Select() */ - assert( pEList!=0 ); - assert( pEList->nExpr>0 ); - assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); - pKeyInfo->aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, - pEList->a[0].pExpr); }else if( ALWAYS(pExpr->x.pList!=0) ){ /* Case 2: expr IN (exprlist) ** @@ -78234,13 +93064,15 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** that columns affinity when building index keys. If is not ** a column, use numeric affinity. */ + char affinity; /* Affinity of the LHS of the IN */ int i; ExprList *pList = pExpr->x.pList; struct ExprList_item *pItem; int r1, r2, r3; + affinity = sqlite3ExprAffinity(pLeft); if( !affinity ){ - affinity = SQLITE_AFF_NONE; + affinity = SQLITE_AFF_BLOB; } if( pKeyInfo ){ assert( sqlite3KeyInfoIsWriteable(pKeyInfo) ); @@ -78250,7 +93082,7 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( /* Loop through each expression in . */ r1 = sqlite3GetTempReg(pParse); r2 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_Null, 0, r2); + if( isRowid ) sqlite3VdbeAddOp2(v, OP_Null, 0, r2); for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){ Expr *pE2 = pItem->pExpr; int iValToIns; @@ -78260,9 +93092,9 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** this code only executes once. Because for a non-constant ** expression we need to rerun this code each time. */ - if( testAddr>=0 && !sqlite3ExprIsConstant(pE2) ){ - sqlite3VdbeChangeToNoop(v, testAddr); - testAddr = -1; + if( jmpIfDynamic>=0 && !sqlite3ExprIsConstant(pE2) ){ + sqlite3VdbeChangeToNoop(v, jmpIfDynamic); + jmpIfDynamic = -1; } /* Evaluate the expression and insert it into the temp table */ @@ -78273,11 +93105,12 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( if( isRowid ){ sqlite3VdbeAddOp2(v, OP_MustBeInt, r3, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3); }else{ sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1); sqlite3ExprCacheAffinityChange(pParse, r3, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, pExpr->iTable, r2); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, pExpr->iTable, r2, r3, 1); } } } @@ -78293,25 +93126,37 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( case TK_EXISTS: case TK_SELECT: default: { - /* If this has to be a scalar SELECT. Generate code to put the - ** value of this select in a memory cell and record the number - ** of the memory cell in iColumn. If this is an EXISTS, write - ** an integer 0 (not exists) or 1 (exists) into a memory cell - ** and record that memory cell in iColumn. + /* Case 3: (SELECT ... FROM ...) + ** or: EXISTS(SELECT ... FROM ...) + ** + ** For a SELECT, generate code to put the values for all columns of + ** the first row into an array of registers and return the index of + ** the first register. + ** + ** If this is an EXISTS, write an integer 0 (not exists) or 1 (exists) + ** into a register and return that register number. + ** + ** In both cases, the query is augmented with "LIMIT 1". Any + ** preexisting limit is discarded in place of the new LIMIT 1. */ Select *pSel; /* SELECT statement to encode */ - SelectDest dest; /* How to deal with SELECt result */ + SelectDest dest; /* How to deal with SELECT result */ + int nReg; /* Registers to allocate */ testcase( pExpr->op==TK_EXISTS ); testcase( pExpr->op==TK_SELECT ); assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT ); - assert( ExprHasProperty(pExpr, EP_xIsSelect) ); + pSel = pExpr->x.pSelect; - sqlite3SelectDestInit(&dest, 0, ++pParse->nMem); + nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1; + sqlite3SelectDestInit(&dest, 0, pParse->nMem+1); + pParse->nMem += nReg; if( pExpr->op==TK_SELECT ){ dest.eDest = SRT_Mem; - sqlite3VdbeAddOp2(v, OP_Null, 0, dest.iSDParm); + dest.iSdst = dest.iSDParm; + dest.nSdst = nReg; + sqlite3VdbeAddOp3(v, OP_Null, 0, dest.iSDParm, dest.iSDParm+nReg-1); VdbeComment((v, "Init subquery result")); }else{ dest.eDest = SRT_Exists; @@ -78319,9 +93164,10 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( VdbeComment((v, "Init EXISTS result")); } sqlite3ExprDelete(pParse->db, pSel->pLimit); - pSel->pLimit = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, - &sqlite3IntTokens[1]); + pSel->pLimit = sqlite3ExprAlloc(pParse->db, TK_INTEGER, + &sqlite3IntTokens[1], 0); pSel->iLimit = 0; + pSel->selFlags &= ~SF_MultiValue; if( sqlite3Select(pParse, pSel, &dest) ){ return 0; } @@ -78331,15 +93177,41 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( } } - if( testAddr>=0 ){ - sqlite3VdbeJumpHere(v, testAddr); + if( rHasNullFlag ){ + sqlite3SetHasNullFlag(v, pExpr->iTable, rHasNullFlag); } - sqlite3ExprCachePop(pParse, 1); + + if( jmpIfDynamic>=0 ){ + sqlite3VdbeJumpHere(v, jmpIfDynamic); + } + sqlite3ExprCachePop(pParse); return rReg; } #endif /* SQLITE_OMIT_SUBQUERY */ +#ifndef SQLITE_OMIT_SUBQUERY +/* +** Expr pIn is an IN(...) expression. This function checks that the +** sub-select on the RHS of the IN() operator has the same number of +** columns as the vector on the LHS. Or, if the RHS of the IN() is not +** a sub-query, that the LHS is a vector of size 1. +*/ +SQLITE_PRIVATE int sqlite3ExprCheckIN(Parse *pParse, Expr *pIn){ + int nVector = sqlite3ExprVectorSize(pIn->pLeft); + if( (pIn->flags & EP_xIsSelect) ){ + if( nVector!=pIn->x.pSelect->pEList->nExpr ){ + sqlite3SubselectError(pParse, pIn->x.pSelect->pEList->nExpr, nVector); + return 1; + } + }else if( nVector!=1 ){ + sqlite3VectorErrorMsg(pParse, pIn->pLeft); + return 1; + } + return 0; +} +#endif + #ifndef SQLITE_OMIT_SUBQUERY /* ** Generate code for an IN expression. @@ -78347,16 +93219,24 @@ SQLITE_PRIVATE int sqlite3CodeSubselect( ** x IN (SELECT ...) ** x IN (value, value, ...) ** -** The left-hand side (LHS) is a scalar expression. The right-hand side (RHS) -** is an array of zero or more values. The expression is true if the LHS is -** contained within the RHS. The value of the expression is unknown (NULL) -** if the LHS is NULL or if the LHS is not contained within the RHS and the -** RHS contains one or more NULL values. +** The left-hand side (LHS) is a scalar or vector expression. The +** right-hand side (RHS) is an array of zero or more scalar values, or a +** subquery. If the RHS is a subquery, the number of result columns must +** match the number of columns in the vector on the LHS. If the RHS is +** a list of values, the LHS must be a scalar. ** -** This routine generates code will jump to destIfFalse if the LHS is not +** The IN operator is true if the LHS value is contained within the RHS. +** The result is false if the LHS is definitely not in the RHS. The +** result is NULL if the presence of the LHS in the RHS cannot be +** determined due to NULLs. +** +** This routine generates code that jumps to destIfFalse if the LHS is not ** contained within the RHS. If due to NULLs we cannot determine if the LHS ** is contained in the RHS then jump to destIfNull. If the LHS is contained ** within the RHS then fall through. +** +** See the separate in-operator.md documentation file in the canonical +** SQLite source tree for additional information. */ static void sqlite3ExprCodeIN( Parse *pParse, /* Parsing and code generating context */ @@ -78365,126 +93245,231 @@ static void sqlite3ExprCodeIN( int destIfNull /* Jump here if the results are unknown due to NULLs */ ){ int rRhsHasNull = 0; /* Register that is true if RHS contains NULL values */ - char affinity; /* Comparison affinity to use */ int eType; /* Type of the RHS */ - int r1; /* Temporary use register */ + int rLhs; /* Register(s) holding the LHS values */ + int rLhsOrig; /* LHS values prior to reordering by aiMap[] */ Vdbe *v; /* Statement under construction */ + int *aiMap = 0; /* Map from vector field to index column */ + char *zAff = 0; /* Affinity string for comparisons */ + int nVector; /* Size of vectors for this IN operator */ + int iDummy; /* Dummy parameter to exprCodeVector() */ + Expr *pLeft; /* The LHS of the IN operator */ + int i; /* loop counter */ + int destStep2; /* Where to jump when NULLs seen in step 2 */ + int destStep6 = 0; /* Start of code for Step 6 */ + int addrTruthOp; /* Address of opcode that determines the IN is true */ + int destNotNull; /* Jump here if a comparison is not true in step 6 */ + int addrTop; /* Top of the step-6 loop */ - /* Compute the RHS. After this step, the table with cursor - ** pExpr->iTable will contains the values that make up the RHS. - */ + pLeft = pExpr->pLeft; + if( sqlite3ExprCheckIN(pParse, pExpr) ) return; + zAff = exprINAffinity(pParse, pExpr); + nVector = sqlite3ExprVectorSize(pExpr->pLeft); + aiMap = (int*)sqlite3DbMallocZero( + pParse->db, nVector*(sizeof(int) + sizeof(char)) + 1 + ); + if( pParse->db->mallocFailed ) goto sqlite3ExprCodeIN_oom_error; + + /* Attempt to compute the RHS. After this step, if anything other than + ** IN_INDEX_NOOP is returned, the table opened ith cursor pExpr->iTable + ** contains the values that make up the RHS. If IN_INDEX_NOOP is returned, + ** the RHS has not yet been coded. */ v = pParse->pVdbe; assert( v!=0 ); /* OOM detected prior to this routine */ VdbeNoopComment((v, "begin IN expr")); - eType = sqlite3FindInIndex(pParse, pExpr, &rRhsHasNull); + eType = sqlite3FindInIndex(pParse, pExpr, + IN_INDEX_MEMBERSHIP | IN_INDEX_NOOP_OK, + destIfFalse==destIfNull ? 0 : &rRhsHasNull, aiMap); - /* Figure out the affinity to use to create a key from the results - ** of the expression. affinityStr stores a static string suitable for - ** P4 of OP_MakeRecord. - */ - affinity = comparisonAffinity(pExpr); + assert( pParse->nErr || nVector==1 || eType==IN_INDEX_EPH + || eType==IN_INDEX_INDEX_ASC || eType==IN_INDEX_INDEX_DESC + ); +#ifdef SQLITE_DEBUG + /* Confirm that aiMap[] contains nVector integer values between 0 and + ** nVector-1. */ + for(i=0; i from " IN (...)". + /* Code the LHS, the from " IN (...)". If the LHS is a + ** vector, then it is stored in an array of nVector registers starting + ** at r1. + ** + ** sqlite3FindInIndex() might have reordered the fields of the LHS vector + ** so that the fields are in the same order as an existing index. The + ** aiMap[] array contains a mapping from the original LHS field order to + ** the field order that matches the RHS index. */ sqlite3ExprCachePush(pParse); - r1 = sqlite3GetTempReg(pParse); - sqlite3ExprCode(pParse, pExpr->pLeft, r1); - - /* If the LHS is NULL, then the result is either false or NULL depending - ** on whether the RHS is empty or not, respectively. - */ - if( destIfNull==destIfFalse ){ - /* Shortcut for the common case where the false and NULL outcomes are - ** the same. */ - sqlite3VdbeAddOp2(v, OP_IsNull, r1, destIfNull); + rLhsOrig = exprCodeVector(pParse, pLeft, &iDummy); + for(i=0; iiTable, destIfFalse); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfNull); - sqlite3VdbeJumpHere(v, addr1); - } - - if( eType==IN_INDEX_ROWID ){ - /* In this case, the RHS is the ROWID of table b-tree - */ - sqlite3VdbeAddOp2(v, OP_MustBeInt, r1, destIfFalse); - sqlite3VdbeAddOp3(v, OP_NotExists, pExpr->iTable, destIfFalse, r1); - }else{ - /* In this case, the RHS is an index b-tree. - */ - sqlite3VdbeAddOp4(v, OP_Affinity, r1, 1, 0, &affinity, 1); - - /* If the set membership test fails, then the result of the - ** "x IN (...)" expression must be either 0 or NULL. If the set - ** contains no NULL values, then the result is 0. If the set - ** contains one or more NULL values, then the result of the - ** expression is also NULL. - */ - if( rRhsHasNull==0 || destIfFalse==destIfNull ){ - /* This branch runs if it is known at compile time that the RHS - ** cannot contain NULL values. This happens as the result - ** of a "NOT NULL" constraint in the database schema. - ** - ** Also run this branch if NULL is equivalent to FALSE - ** for this particular IN operator. - */ - sqlite3VdbeAddOp4Int(v, OP_NotFound, pExpr->iTable, destIfFalse, r1, 1); - - }else{ - /* In this branch, the RHS of the IN might contain a NULL and - ** the presence of a NULL on the RHS makes a difference in the - ** outcome. - */ - int j1, j2, j3; - - /* First check to see if the LHS is contained in the RHS. If so, - ** then the presence of NULLs in the RHS does not matter, so jump - ** over all of the code that follows. - */ - j1 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, r1, 1); - - /* Here we begin generating code that runs if the LHS is not - ** contained within the RHS. Generate additional code that - ** tests the RHS for NULLs. If the RHS contains a NULL then - ** jump to destIfNull. If there are no NULLs in the RHS then - ** jump to destIfFalse. - */ - j2 = sqlite3VdbeAddOp1(v, OP_NotNull, rRhsHasNull); - j3 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, rRhsHasNull, 1); - sqlite3VdbeAddOp2(v, OP_Integer, -1, rRhsHasNull); - sqlite3VdbeJumpHere(v, j3); - sqlite3VdbeAddOp2(v, OP_AddImm, rRhsHasNull, 1); - sqlite3VdbeJumpHere(v, j2); - - /* Jump to the appropriate target depending on whether or not - ** the RHS contains a NULL - */ - sqlite3VdbeAddOp2(v, OP_If, rRhsHasNull, destIfNull); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfFalse); - - /* The OP_Found at the top of this branch jumps here when true, - ** causing the overall IN expression evaluation to fall through. - */ - sqlite3VdbeJumpHere(v, j1); + /* Need to reorder the LHS fields according to aiMap */ + rLhs = sqlite3GetTempRange(pParse, nVector); + for(i=0; ix.pList; + CollSeq *pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft); + int labelOk = sqlite3VdbeMakeLabel(v); + int r2, regToFree; + int regCkNull = 0; + int ii; + assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); + if( destIfNull!=destIfFalse ){ + regCkNull = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_BitAnd, rLhs, rLhs, regCkNull); + } + for(ii=0; iinExpr; ii++){ + r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, ®ToFree); + if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){ + sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull); + } + if( iinExpr-1 || destIfNull!=destIfFalse ){ + sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2, + (void*)pColl, P4_COLLSEQ); + VdbeCoverageIf(v, iinExpr-1); + VdbeCoverageIf(v, ii==pList->nExpr-1); + sqlite3VdbeChangeP5(v, zAff[0]); + }else{ + assert( destIfNull==destIfFalse ); + sqlite3VdbeAddOp4(v, OP_Ne, rLhs, destIfFalse, r2, + (void*)pColl, P4_COLLSEQ); VdbeCoverage(v); + sqlite3VdbeChangeP5(v, zAff[0] | SQLITE_JUMPIFNULL); + } + sqlite3ReleaseTempReg(pParse, regToFree); + } + if( regCkNull ){ + sqlite3VdbeAddOp2(v, OP_IsNull, regCkNull, destIfNull); VdbeCoverage(v); + sqlite3VdbeGoto(v, destIfFalse); + } + sqlite3VdbeResolveLabel(v, labelOk); + sqlite3ReleaseTempReg(pParse, regCkNull); + goto sqlite3ExprCodeIN_finished; + } + + /* Step 2: Check to see if the LHS contains any NULL columns. If the + ** LHS does contain NULLs then the result must be either FALSE or NULL. + ** We will then skip the binary search of the RHS. + */ + if( destIfNull==destIfFalse ){ + destStep2 = destIfFalse; + }else{ + destStep2 = destStep6 = sqlite3VdbeMakeLabel(v); + } + for(i=0; ipLeft, i); + if( sqlite3ExprCanBeNull(p) ){ + sqlite3VdbeAddOp2(v, OP_IsNull, rLhs+i, destStep2); + VdbeCoverage(v); + } + } + + /* Step 3. The LHS is now known to be non-NULL. Do the binary search + ** of the RHS using the LHS as a probe. If found, the result is + ** true. + */ + if( eType==IN_INDEX_ROWID ){ + /* In this case, the RHS is the ROWID of table b-tree and so we also + ** know that the RHS is non-NULL. Hence, we combine steps 3 and 4 + ** into a single opcode. */ + sqlite3VdbeAddOp3(v, OP_SeekRowid, pExpr->iTable, destIfFalse, rLhs); + VdbeCoverage(v); + addrTruthOp = sqlite3VdbeAddOp0(v, OP_Goto); /* Return True */ + }else{ + sqlite3VdbeAddOp4(v, OP_Affinity, rLhs, nVector, 0, zAff, nVector); + if( destIfFalse==destIfNull ){ + /* Combine Step 3 and Step 5 into a single opcode */ + sqlite3VdbeAddOp4Int(v, OP_NotFound, pExpr->iTable, destIfFalse, + rLhs, nVector); VdbeCoverage(v); + goto sqlite3ExprCodeIN_finished; + } + /* Ordinary Step 3, for the case where FALSE and NULL are distinct */ + addrTruthOp = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, + rLhs, nVector); VdbeCoverage(v); + } + + /* Step 4. If the RHS is known to be non-NULL and we did not find + ** an match on the search above, then the result must be FALSE. + */ + if( rRhsHasNull && nVector==1 ){ + sqlite3VdbeAddOp2(v, OP_NotNull, rRhsHasNull, destIfFalse); + VdbeCoverage(v); + } + + /* Step 5. If we do not care about the difference between NULL and + ** FALSE, then just return false. + */ + if( destIfFalse==destIfNull ) sqlite3VdbeGoto(v, destIfFalse); + + /* Step 6: Loop through rows of the RHS. Compare each row to the LHS. + ** If any comparison is NULL, then the result is NULL. If all + ** comparisons are FALSE then the final result is FALSE. + ** + ** For a scalar LHS, it is sufficient to check just the first row + ** of the RHS. + */ + if( destStep6 ) sqlite3VdbeResolveLabel(v, destStep6); + addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, pExpr->iTable, destIfFalse); + VdbeCoverage(v); + if( nVector>1 ){ + destNotNull = sqlite3VdbeMakeLabel(v); + }else{ + /* For nVector==1, combine steps 6 and 7 by immediately returning + ** FALSE if the first comparison is not NULL */ + destNotNull = destIfFalse; + } + for(i=0; iiTable, i, r3); + sqlite3VdbeAddOp4(v, OP_Ne, rLhs+i, destNotNull, r3, + (void*)pColl, P4_COLLSEQ); + VdbeCoverage(v); + sqlite3ReleaseTempReg(pParse, r3); + } + sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfNull); + if( nVector>1 ){ + sqlite3VdbeResolveLabel(v, destNotNull); + sqlite3VdbeAddOp2(v, OP_Next, pExpr->iTable, addrTop+1); + VdbeCoverage(v); + + /* Step 7: If we reach this point, we know that the result must + ** be false. */ + sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfFalse); + } + + /* Jumps here in order to return true. */ + sqlite3VdbeJumpHere(v, addrTruthOp); + +sqlite3ExprCodeIN_finished: + if( rLhs!=rLhsOrig ) sqlite3ReleaseTempReg(pParse, rLhs); + sqlite3ExprCachePop(pParse); VdbeComment((v, "end IN expr")); +sqlite3ExprCodeIN_oom_error: + sqlite3DbFree(pParse->db, aiMap); + sqlite3DbFree(pParse->db, zAff); } #endif /* SQLITE_OMIT_SUBQUERY */ -/* -** Duplicate an 8-byte value -*/ -static char *dup8bytes(Vdbe *v, const char *in){ - char *out = sqlite3DbMallocRaw(sqlite3VdbeDb(v), 8); - if( out ){ - memcpy(out, in, 8); - } - return out; -} - #ifndef SQLITE_OMIT_FLOATING_POINT /* ** Generate an instruction that will put the floating point @@ -78497,12 +93482,10 @@ static char *dup8bytes(Vdbe *v, const char *in){ static void codeReal(Vdbe *v, const char *z, int negateFlag, int iMem){ if( ALWAYS(z!=0) ){ double value; - char *zV; sqlite3AtoF(z, &value, sqlite3Strlen30(z), SQLITE_UTF8); assert( !sqlite3IsNaN(value) ); /* The new AtoF never returns NaN */ if( negateFlag ) value = -value; - zV = dup8bytes(v, (char*)&value); - sqlite3VdbeAddOp4(v, OP_Real, 0, iMem, 0, zV, P4_REAL); + sqlite3VdbeAddOp4Dup8(v, OP_Real, 0, iMem, 0, (u8*)&value, P4_REAL); } } #endif @@ -78526,31 +93509,39 @@ static void codeInteger(Parse *pParse, Expr *pExpr, int negFlag, int iMem){ i64 value; const char *z = pExpr->u.zToken; assert( z!=0 ); - c = sqlite3Atoi64(z, &value, sqlite3Strlen30(z), SQLITE_UTF8); - if( c==0 || (c==2 && negFlag) ){ - char *zV; - if( negFlag ){ value = c==2 ? SMALLEST_INT64 : -value; } - zV = dup8bytes(v, (char*)&value); - sqlite3VdbeAddOp4(v, OP_Int64, 0, iMem, 0, zV, P4_INT64); - }else{ + c = sqlite3DecOrHexToI64(z, &value); + if( c==1 || (c==2 && !negFlag) || (negFlag && value==SMALLEST_INT64)){ #ifdef SQLITE_OMIT_FLOATING_POINT sqlite3ErrorMsg(pParse, "oversized integer: %s%s", negFlag ? "-" : "", z); #else - codeReal(v, z, negFlag, iMem); +#ifndef SQLITE_OMIT_HEX_INTEGER + if( sqlite3_strnicmp(z,"0x",2)==0 ){ + sqlite3ErrorMsg(pParse, "hex literal too big: %s%s", negFlag?"-":"",z); + }else #endif + { + codeReal(v, z, negFlag, iMem); + } +#endif + }else{ + if( negFlag ){ value = c==2 ? SMALLEST_INT64 : -value; } + sqlite3VdbeAddOp4Dup8(v, OP_Int64, 0, iMem, 0, (u8*)&value, P4_INT64); } } } /* -** Clear a cache entry. +** Erase column-cache entry number i */ -static void cacheEntryClear(Parse *pParse, struct yColCache *p){ - if( p->tempReg ){ +static void cacheEntryClear(Parse *pParse, int i){ + if( pParse->aColCache[i].tempReg ){ if( pParse->nTempRegaTempReg) ){ - pParse->aTempReg[pParse->nTempReg++] = p->iReg; + pParse->aTempReg[pParse->nTempReg++] = pParse->aColCache[i].iReg; } - p->tempReg = 0; + } + pParse->nColCache--; + if( inColCache ){ + pParse->aColCache[i] = pParse->aColCache[pParse->nColCache]; } } @@ -78565,7 +93556,8 @@ SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse *pParse, int iTab, int iCol, int int idxLru; struct yColCache *p; - assert( iReg>0 ); /* Register numbers are always positive */ + /* Unless an error has occurred, register numbers are always positive. */ + assert( iReg>0 || pParse->nErr || pParse->db->mallocFailed ); assert( iCol>=-1 && iCol<32768 ); /* Finite column numbers */ /* The SQLITE_ColumnCache flag disables the column cache. This is used @@ -78580,43 +93572,33 @@ SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse *pParse, int iTab, int iCol, int ** that the object will never already be in cache. Verify this guarantee. */ #ifndef NDEBUG - for(i=0, p=pParse->aColCache; iiReg==0 || p->iTable!=iTab || p->iColumn!=iCol ); + for(i=0, p=pParse->aColCache; inColCache; i++, p++){ + assert( p->iTable!=iTab || p->iColumn!=iCol ); } #endif - /* Find an empty slot and replace it */ - for(i=0, p=pParse->aColCache; iiReg==0 ){ - p->iLevel = pParse->iCacheLevel; - p->iTable = iTab; - p->iColumn = iCol; - p->iReg = iReg; - p->tempReg = 0; - p->lru = pParse->iCacheCnt++; - return; + /* If the cache is already full, delete the least recently used entry */ + if( pParse->nColCache>=SQLITE_N_COLCACHE ){ + minLru = 0x7fffffff; + idxLru = -1; + for(i=0, p=pParse->aColCache; ilrulru; + } } + p = &pParse->aColCache[idxLru]; + }else{ + p = &pParse->aColCache[pParse->nColCache++]; } - /* Replace the last recently used */ - minLru = 0x7fffffff; - idxLru = -1; - for(i=0, p=pParse->aColCache; ilrulru; - } - } - if( ALWAYS(idxLru>=0) ){ - p = &pParse->aColCache[idxLru]; - p->iLevel = pParse->iCacheLevel; - p->iTable = iTab; - p->iColumn = iCol; - p->iReg = iReg; - p->tempReg = 0; - p->lru = pParse->iCacheCnt++; - return; - } + /* Add the new entry to the end of the cache */ + p->iLevel = pParse->iCacheLevel; + p->iTable = iTab; + p->iColumn = iCol; + p->iReg = iReg; + p->tempReg = 0; + p->lru = pParse->iCacheCnt++; } /* @@ -78624,14 +93606,13 @@ SQLITE_PRIVATE void sqlite3ExprCacheStore(Parse *pParse, int iTab, int iCol, int ** Purge the range of registers from the column cache. */ SQLITE_PRIVATE void sqlite3ExprCacheRemove(Parse *pParse, int iReg, int nReg){ - int i; - int iLast = iReg + nReg - 1; - struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg; - if( r>=iReg && r<=iLast ){ - cacheEntryClear(pParse, p); - p->iReg = 0; + int i = 0; + while( inColCache ){ + struct yColCache *p = &pParse->aColCache[i]; + if( p->iReg >= iReg && p->iReg < iReg+nReg ){ + cacheEntryClear(pParse, i); + }else{ + i++; } } } @@ -78652,24 +93633,23 @@ SQLITE_PRIVATE void sqlite3ExprCachePush(Parse *pParse){ /* ** Remove from the column cache any entries that were added since the -** the previous N Push operations. In other words, restore the cache -** to the state it was in N Pushes ago. +** the previous sqlite3ExprCachePush operation. In other words, restore +** the cache to the state it was in prior the most recent Push. */ -SQLITE_PRIVATE void sqlite3ExprCachePop(Parse *pParse, int N){ - int i; - struct yColCache *p; - assert( N>0 ); - assert( pParse->iCacheLevel>=N ); - pParse->iCacheLevel -= N; +SQLITE_PRIVATE void sqlite3ExprCachePop(Parse *pParse){ + int i = 0; + assert( pParse->iCacheLevel>=1 ); + pParse->iCacheLevel--; #ifdef SQLITE_DEBUG if( pParse->db->flags & SQLITE_VdbeAddopTrace ){ printf("POP to %d\n", pParse->iCacheLevel); } #endif - for(i=0, p=pParse->aColCache; iiReg && p->iLevel>pParse->iCacheLevel ){ - cacheEntryClear(pParse, p); - p->iReg = 0; + while( inColCache ){ + if( pParse->aColCache[i].iLevel>pParse->iCacheLevel ){ + cacheEntryClear(pParse, i); + }else{ + i++; } } } @@ -78683,13 +93663,35 @@ SQLITE_PRIVATE void sqlite3ExprCachePop(Parse *pParse, int N){ static void sqlite3ExprCachePinRegister(Parse *pParse, int iReg){ int i; struct yColCache *p; - for(i=0, p=pParse->aColCache; iaColCache; inColCache; i++, p++){ if( p->iReg==iReg ){ p->tempReg = 0; } } } +/* Generate code that will load into register regOut a value that is +** appropriate for the iIdxCol-th column of index pIdx. +*/ +SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn( + Parse *pParse, /* The parsing context */ + Index *pIdx, /* The index whose column is to be loaded */ + int iTabCur, /* Cursor pointing to a table row */ + int iIdxCol, /* The column of the index to be loaded */ + int regOut /* Store the index column value in this register */ +){ + i16 iTabCol = pIdx->aiColumn[iIdxCol]; + if( iTabCol==XN_EXPR ){ + assert( pIdx->aColExpr ); + assert( pIdx->aColExpr->nExpr>iIdxCol ); + pParse->iSelfTab = iTabCur; + sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[iIdxCol].pExpr, regOut); + }else{ + sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pIdx->pTable, iTabCur, + iTabCol, regOut); + } +} + /* ** Generate code to extract the value of the iCol-th column of a table. */ @@ -78705,7 +93707,7 @@ SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable( }else{ int op = IsVirtual(pTab) ? OP_VColumn : OP_Column; int x = iCol; - if( !HasRowid(pTab) ){ + if( !HasRowid(pTab) && !IsVirtual(pTab) ){ x = sqlite3ColumnOfIndex(sqlite3PrimaryKeyIndex(pTab), iCol); } sqlite3VdbeAddOp3(v, op, iTabCur, x, regOut); @@ -78717,9 +93719,12 @@ SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable( /* ** Generate code that will extract the iColumn-th column from -** table pTab and store the column value in a register. An effort -** is made to store the column value in register iReg, but this is -** not guaranteed. The location of the column value is returned. +** table pTab and store the column value in a register. +** +** An effort is made to store the column value in register iReg. This +** is not garanteeed for GetColumn() - the result can be stored in +** any register. But the result is guaranteed to land in register iReg +** for GetColumnToReg(). ** ** There must be an open cursor to pTab in iTable when this routine ** is called. If iColumn<0 then code is generated that extracts the rowid. @@ -78730,14 +93735,14 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn( int iColumn, /* Index of the table column */ int iTable, /* The cursor pointing to the table */ int iReg, /* Store results here */ - u8 p5 /* P5 value for OP_Column */ + u8 p5 /* P5 value for OP_Column + FLAGS */ ){ Vdbe *v = pParse->pVdbe; int i; struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg>0 && p->iTable==iTable && p->iColumn==iColumn ){ + for(i=0, p=pParse->aColCache; inColCache; i++, p++){ + if( p->iTable==iTable && p->iColumn==iColumn ){ p->lru = pParse->iCacheCnt++; sqlite3ExprCachePinRegister(pParse, p->iReg); return p->iReg; @@ -78752,25 +93757,37 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn( } return iReg; } +SQLITE_PRIVATE void sqlite3ExprCodeGetColumnToReg( + Parse *pParse, /* Parsing and code generating context */ + Table *pTab, /* Description of the table we are reading from */ + int iColumn, /* Index of the table column */ + int iTable, /* The cursor pointing to the table */ + int iReg /* Store results here */ +){ + int r1 = sqlite3ExprCodeGetColumn(pParse, pTab, iColumn, iTable, iReg, 0); + if( r1!=iReg ) sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, r1, iReg); +} + /* ** Clear all column cache entries. */ SQLITE_PRIVATE void sqlite3ExprCacheClear(Parse *pParse){ int i; - struct yColCache *p; #if SQLITE_DEBUG if( pParse->db->flags & SQLITE_VdbeAddopTrace ){ printf("CLEAR\n"); } #endif - for(i=0, p=pParse->aColCache; iiReg ){ - cacheEntryClear(pParse, p); - p->iReg = 0; + for(i=0; inColCache; i++){ + if( pParse->aColCache[i].tempReg + && pParse->nTempRegaTempReg) + ){ + pParse->aTempReg[pParse->nTempReg++] = pParse->aColCache[i].iReg; } } + pParse->nColCache = 0; } /* @@ -78786,16 +93803,9 @@ SQLITE_PRIVATE void sqlite3ExprCacheAffinityChange(Parse *pParse, int iStart, in ** over to iTo..iTo+nReg-1. Keep the column cache up-to-date. */ SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){ - int i; - struct yColCache *p; assert( iFrom>=iTo+nReg || iFrom+nReg<=iTo ); - sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg-1); - for(i=0, p=pParse->aColCache; iiReg; - if( x>=iFrom && xiReg += iTo-iFrom; - } - } + sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg); + sqlite3ExprCacheRemove(pParse, iFrom, nReg); } #if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) @@ -78809,7 +93819,7 @@ SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int n static int usedAsColumnCache(Parse *pParse, int iFrom, int iTo){ int i; struct yColCache *p; - for(i=0, p=pParse->aColCache; iaColCache; inColCache; i++, p++){ int r = p->iReg; if( r>=iFrom && r<=iTo ) return 1; /*NO_TEST*/ } @@ -78817,8 +93827,11 @@ static int usedAsColumnCache(Parse *pParse, int iFrom, int iTo){ } #endif /* SQLITE_DEBUG || SQLITE_COVERAGE_TEST */ + /* -** Convert an expression node to a TK_REGISTER +** Convert a scalar expression node to a TK_REGISTER referencing +** register iReg. The caller must ensure that iReg already contains +** the correct value for the expression. */ static void exprToRegister(Expr *p, int iReg){ p->op2 = p->op; @@ -78827,6 +93840,38 @@ static void exprToRegister(Expr *p, int iReg){ ExprClearProperty(p, EP_Skip); } +/* +** Evaluate an expression (either a vector or a scalar expression) and store +** the result in continguous temporary registers. Return the index of +** the first register used to store the result. +** +** If the returned result register is a temporary scalar, then also write +** that register number into *piFreeable. If the returned result register +** is not a temporary or if the expression is a vector set *piFreeable +** to 0. +*/ +static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){ + int iResult; + int nResult = sqlite3ExprVectorSize(p); + if( nResult==1 ){ + iResult = sqlite3ExprCodeTemp(pParse, p, piFreeable); + }else{ + *piFreeable = 0; + if( p->op==TK_SELECT ){ + iResult = sqlite3CodeSubselect(pParse, p, 0, 0); + }else{ + int i; + iResult = pParse->nMem+1; + pParse->nMem += nResult; + for(i=0; ix.pList->a[i].pExpr, i+iResult); + } + } + } + return iResult; +} + + /* ** Generate code into the current Vdbe to evaluate the given ** expression. Attempt to store the results in register "target". @@ -78844,9 +93889,9 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) int inReg = target; /* Results stored in register inReg */ int regFree1 = 0; /* If non-zero free this temporary register */ int regFree2 = 0; /* If non-zero free this temporary register */ - int r1, r2, r3, r4; /* Various register numbers */ - sqlite3 *db = pParse->db; /* The database connection */ + int r1, r2; /* Various register numbers */ Expr tempX; /* Temporary expression node */ + int p5 = 0; assert( target>0 && target<=pParse->nMem ); if( v==0 ){ @@ -78865,12 +93910,11 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) struct AggInfo_col *pCol = &pAggInfo->aCol[pExpr->iAgg]; if( !pAggInfo->directMode ){ assert( pCol->iMem>0 ); - inReg = pCol->iMem; - break; + return pCol->iMem; }else if( pAggInfo->useSortingIdx ){ sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab, pCol->iSorterColumn, target); - break; + return target; } /* Otherwise, fall thru into the TK_COLUMN case */ } @@ -78879,37 +93923,36 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) if( iTab<0 ){ if( pParse->ckBase>0 ){ /* Generating CHECK constraints or inserting into partial index */ - inReg = pExpr->iColumn + pParse->ckBase; - break; + return pExpr->iColumn + pParse->ckBase; }else{ - /* Deleting from a partial index */ - iTab = pParse->iPartIdxTab; + /* Coding an expression that is part of an index where column names + ** in the index refer to the table to which the index belongs */ + iTab = pParse->iSelfTab; } } - inReg = sqlite3ExprCodeGetColumn(pParse, pExpr->pTab, + return sqlite3ExprCodeGetColumn(pParse, pExpr->pTab, pExpr->iColumn, iTab, target, pExpr->op2); - break; } case TK_INTEGER: { codeInteger(pParse, pExpr, 0, target); - break; + return target; } #ifndef SQLITE_OMIT_FLOATING_POINT case TK_FLOAT: { assert( !ExprHasProperty(pExpr, EP_IntValue) ); codeReal(v, pExpr->u.zToken, 0, target); - break; + return target; } #endif case TK_STRING: { assert( !ExprHasProperty(pExpr, EP_IntValue) ); - sqlite3VdbeAddOp4(v, OP_String8, 0, target, 0, pExpr->u.zToken, 0); - break; + sqlite3VdbeLoadString(v, target, pExpr->u.zToken); + return target; } case TK_NULL: { sqlite3VdbeAddOp2(v, OP_Null, 0, target); - break; + return target; } #ifndef SQLITE_OMIT_BLOB_LITERAL case TK_BLOB: { @@ -78924,7 +93967,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) assert( z[n]=='\'' ); zBlob = sqlite3HexToBlob(sqlite3VdbeDb(v), z, n); sqlite3VdbeAddOp4(v, OP_Blob, n/2, target, 0, zBlob, P4_DYNAMIC); - break; + return target; } #endif case TK_VARIABLE: { @@ -78933,85 +93976,59 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) assert( pExpr->u.zToken[0]!=0 ); sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target); if( pExpr->u.zToken[1]!=0 ){ - assert( pExpr->u.zToken[0]=='?' - || strcmp(pExpr->u.zToken, pParse->azVar[pExpr->iColumn-1])==0 ); - sqlite3VdbeChangeP4(v, -1, pParse->azVar[pExpr->iColumn-1], P4_STATIC); + const char *z = sqlite3VListNumToName(pParse->pVList, pExpr->iColumn); + assert( pExpr->u.zToken[0]=='?' || strcmp(pExpr->u.zToken, z)==0 ); + pParse->pVList[0] = 0; /* Indicate VList may no longer be enlarged */ + sqlite3VdbeAppendP4(v, (char*)z, P4_STATIC); } - break; + return target; } case TK_REGISTER: { - inReg = pExpr->iTable; - break; - } - case TK_AS: { - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - break; + return pExpr->iTable; } #ifndef SQLITE_OMIT_CAST case TK_CAST: { /* Expressions of the form: CAST(pLeft AS token) */ - int aff, to_op; inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - aff = sqlite3AffinityType(pExpr->u.zToken, 0); - to_op = aff - SQLITE_AFF_TEXT + OP_ToText; - assert( to_op==OP_ToText || aff!=SQLITE_AFF_TEXT ); - assert( to_op==OP_ToBlob || aff!=SQLITE_AFF_NONE ); - assert( to_op==OP_ToNumeric || aff!=SQLITE_AFF_NUMERIC ); - assert( to_op==OP_ToInt || aff!=SQLITE_AFF_INTEGER ); - assert( to_op==OP_ToReal || aff!=SQLITE_AFF_REAL ); - testcase( to_op==OP_ToText ); - testcase( to_op==OP_ToBlob ); - testcase( to_op==OP_ToNumeric ); - testcase( to_op==OP_ToInt ); - testcase( to_op==OP_ToReal ); if( inReg!=target ){ sqlite3VdbeAddOp2(v, OP_SCopy, inReg, target); inReg = target; } - sqlite3VdbeAddOp1(v, to_op, inReg); + sqlite3VdbeAddOp2(v, OP_Cast, target, + sqlite3AffinityType(pExpr->u.zToken, 0)); testcase( usedAsColumnCache(pParse, inReg, inReg) ); sqlite3ExprCacheAffinityChange(pParse, inReg, 1); - break; + return inReg; } #endif /* SQLITE_OMIT_CAST */ + case TK_IS: + case TK_ISNOT: + op = (op==TK_IS) ? TK_EQ : TK_NE; + p5 = SQLITE_NULLEQ; + /* fall-through */ case TK_LT: case TK_LE: case TK_GT: case TK_GE: case TK_NE: case TK_EQ: { - assert( TK_LT==OP_Lt ); - assert( TK_LE==OP_Le ); - assert( TK_GT==OP_Gt ); - assert( TK_GE==OP_Ge ); - assert( TK_EQ==OP_Eq ); - assert( TK_NE==OP_Ne ); - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, inReg, SQLITE_STOREP2); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( op==TK_IS ); - testcase( op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (op==TK_IS) ? TK_EQ : TK_NE; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, inReg, SQLITE_STOREP2 | SQLITE_NULLEQ); - testcase( regFree1==0 ); - testcase( regFree2==0 ); + Expr *pLeft = pExpr->pLeft; + if( sqlite3ExprIsVector(pLeft) ){ + codeVectorCompare(pParse, pExpr, target, op, p5); + }else{ + r1 = sqlite3ExprCodeTemp(pParse, pLeft, ®Free1); + r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); + codeCompare(pParse, pLeft, pExpr->pRight, op, + r1, r2, inReg, SQLITE_STOREP2 | p5); + assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); + assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); + assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); + assert(TK_GE==OP_Ge); testcase(op==OP_Ge); VdbeCoverageIf(v,op==OP_Ge); + assert(TK_EQ==OP_Eq); testcase(op==OP_Eq); VdbeCoverageIf(v,op==OP_Eq); + assert(TK_NE==OP_Ne); testcase(op==OP_Ne); VdbeCoverageIf(v,op==OP_Ne); + testcase( regFree1==0 ); + testcase( regFree2==0 ); + } break; } case TK_AND: @@ -79026,28 +94043,17 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) case TK_LSHIFT: case TK_RSHIFT: case TK_CONCAT: { - assert( TK_AND==OP_And ); - assert( TK_OR==OP_Or ); - assert( TK_PLUS==OP_Add ); - assert( TK_MINUS==OP_Subtract ); - assert( TK_REM==OP_Remainder ); - assert( TK_BITAND==OP_BitAnd ); - assert( TK_BITOR==OP_BitOr ); - assert( TK_SLASH==OP_Divide ); - assert( TK_LSHIFT==OP_ShiftLeft ); - assert( TK_RSHIFT==OP_ShiftRight ); - assert( TK_CONCAT==OP_Concat ); - testcase( op==TK_AND ); - testcase( op==TK_OR ); - testcase( op==TK_PLUS ); - testcase( op==TK_MINUS ); - testcase( op==TK_REM ); - testcase( op==TK_BITAND ); - testcase( op==TK_BITOR ); - testcase( op==TK_SLASH ); - testcase( op==TK_LSHIFT ); - testcase( op==TK_RSHIFT ); - testcase( op==TK_CONCAT ); + assert( TK_AND==OP_And ); testcase( op==TK_AND ); + assert( TK_OR==OP_Or ); testcase( op==TK_OR ); + assert( TK_PLUS==OP_Add ); testcase( op==TK_PLUS ); + assert( TK_MINUS==OP_Subtract ); testcase( op==TK_MINUS ); + assert( TK_REM==OP_Remainder ); testcase( op==TK_REM ); + assert( TK_BITAND==OP_BitAnd ); testcase( op==TK_BITAND ); + assert( TK_BITOR==OP_BitOr ); testcase( op==TK_BITOR ); + assert( TK_SLASH==OP_Divide ); testcase( op==TK_SLASH ); + assert( TK_LSHIFT==OP_ShiftLeft ); testcase( op==TK_LSHIFT ); + assert( TK_RSHIFT==OP_ShiftRight ); testcase( op==TK_RSHIFT ); + assert( TK_CONCAT==OP_Concat ); testcase( op==TK_CONCAT ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); sqlite3VdbeAddOp3(v, op, r2, r1, target); @@ -79060,10 +94066,12 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) assert( pLeft ); if( pLeft->op==TK_INTEGER ){ codeInteger(pParse, pLeft, 1, target); + return target; #ifndef SQLITE_OMIT_FLOATING_POINT }else if( pLeft->op==TK_FLOAT ){ assert( !ExprHasProperty(pExpr, EP_IntValue) ); codeReal(v, pLeft->u.zToken, 1, target); + return target; #endif }else{ tempX.op = TK_INTEGER; @@ -79074,33 +94082,29 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target); testcase( regFree2==0 ); } - inReg = target; break; } case TK_BITNOT: case TK_NOT: { - assert( TK_BITNOT==OP_BitNot ); - assert( TK_NOT==OP_Not ); - testcase( op==TK_BITNOT ); - testcase( op==TK_NOT ); + assert( TK_BITNOT==OP_BitNot ); testcase( op==TK_BITNOT ); + assert( TK_NOT==OP_Not ); testcase( op==TK_NOT ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); testcase( regFree1==0 ); - inReg = target; sqlite3VdbeAddOp2(v, op, r1, inReg); break; } case TK_ISNULL: case TK_NOTNULL: { int addr; - assert( TK_ISNULL==OP_IsNull ); - assert( TK_NOTNULL==OP_NotNull ); - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); + assert( TK_ISNULL==OP_IsNull ); testcase( op==TK_ISNULL ); + assert( TK_NOTNULL==OP_NotNull ); testcase( op==TK_NOTNULL ); sqlite3VdbeAddOp2(v, OP_Integer, 1, target); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); testcase( regFree1==0 ); addr = sqlite3VdbeAddOp1(v, op, r1); - sqlite3VdbeAddOp2(v, OP_AddImm, target, -1); + VdbeCoverageIf(v, op==TK_ISNULL); + VdbeCoverageIf(v, op==TK_NOTNULL); + sqlite3VdbeAddOp2(v, OP_Integer, 0, target); sqlite3VdbeJumpHere(v, addr); break; } @@ -79110,7 +94114,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) assert( !ExprHasProperty(pExpr, EP_IntValue) ); sqlite3ErrorMsg(pParse, "misuse of aggregate: %s()", pExpr->u.zToken); }else{ - inReg = pInfo->aFunc[pExpr->iAgg].iMem; + return pInfo->aFunc[pExpr->iAgg].iMem; } break; } @@ -79118,13 +94122,18 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) ExprList *pFarg; /* List of function arguments */ int nFarg; /* Number of function arguments */ FuncDef *pDef; /* The function definition object */ - int nId; /* Length of the function name in bytes */ const char *zId; /* The function name */ u32 constMask = 0; /* Mask of function arguments that are constant */ int i; /* Loop counter */ + sqlite3 *db = pParse->db; /* The database connection */ u8 enc = ENC(db); /* The text encoding used by this database */ CollSeq *pColl = 0; /* A collating sequence */ + if( ConstFactorOk(pParse) && sqlite3ExprIsConstantNotJoin(pExpr) ){ + /* SQL functions can be expensive. So try to move constant functions + ** out of the inner loop, even if that means an extra OP_Copy. */ + return sqlite3ExprCodeAtInit(pParse, pExpr, -1); + } assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); if( ExprHasProperty(pExpr, EP_TokenOnly) ){ pFarg = 0; @@ -79134,15 +94143,19 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) nFarg = pFarg ? pFarg->nExpr : 0; assert( !ExprHasProperty(pExpr, EP_IntValue) ); zId = pExpr->u.zToken; - nId = sqlite3Strlen30(zId); - pDef = sqlite3FindFunction(db, zId, nId, nFarg, enc, 0); - if( pDef==0 ){ - sqlite3ErrorMsg(pParse, "unknown function: %.*s()", nId, zId); + pDef = sqlite3FindFunction(db, zId, nFarg, enc, 0); +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + if( pDef==0 && pParse->explain ){ + pDef = sqlite3FindFunction(db, "unknown", nFarg, enc, 0); + } +#endif + if( pDef==0 || pDef->xFinalize!=0 ){ + sqlite3ErrorMsg(pParse, "unknown function: %s()", zId); break; } /* Attempt a direct implementation of the built-in COALESCE() and - ** IFNULL() functions. This avoids unnecessary evalation of + ** IFNULL() functions. This avoids unnecessary evaluation of ** arguments past the first non-NULL argument. */ if( pDef->funcFlags & SQLITE_FUNC_COALESCE ){ @@ -79151,10 +94164,11 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target); for(i=1; ia[i].pExpr, target); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); } sqlite3VdbeResolveLabel(v, endCoalesce); break; @@ -79165,10 +94179,25 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) */ if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){ assert( nFarg>=1 ); - sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target); - break; + return sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target); } +#ifdef SQLITE_DEBUG + /* The AFFINITY() function evaluates to a string that describes + ** the type affinity of the argument. This is used for testing of + ** the SQLite type logic. + */ + if( pDef->funcFlags & SQLITE_FUNC_AFFINITY ){ + const char *azAff[] = { "blob", "text", "numeric", "integer", "real" }; + char aff; + assert( nFarg==1 ); + aff = sqlite3ExprAffinity(pFarg->a[0].pExpr); + sqlite3VdbeLoadString(v, target, + aff ? azAff[aff-SQLITE_AFF_BLOB] : "none"); + return target; + } +#endif + for(i=0; ia[i].pExpr) ){ testcase( i==31 ); @@ -79206,9 +94235,9 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) } sqlite3ExprCachePush(pParse); /* Ticket 2ea2425d34be */ - sqlite3ExprCodeExprList(pParse, pFarg, r1, + sqlite3ExprCodeExprList(pParse, pFarg, r1, 0, SQLITE_ECEL_DUP|SQLITE_ECEL_FACTOR); - sqlite3ExprCachePop(pParse, 1); /* Ticket 2ea2425d34be */ + sqlite3ExprCachePop(pParse); /* Ticket 2ea2425d34be */ }else{ r1 = 0; } @@ -79235,22 +94264,41 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) if( !pColl ) pColl = db->pDfltColl; sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ); } - sqlite3VdbeAddOp4(v, OP_Function, constMask, r1, target, + sqlite3VdbeAddOp4(v, OP_Function0, constMask, r1, target, (char*)pDef, P4_FUNCDEF); sqlite3VdbeChangeP5(v, (u8)nFarg); if( nFarg && constMask==0 ){ sqlite3ReleaseTempRange(pParse, r1, nFarg); } - break; + return target; } #ifndef SQLITE_OMIT_SUBQUERY case TK_EXISTS: case TK_SELECT: { + int nCol; testcase( op==TK_EXISTS ); testcase( op==TK_SELECT ); - inReg = sqlite3CodeSubselect(pParse, pExpr, 0, 0); + if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){ + sqlite3SubselectError(pParse, nCol, 1); + }else{ + return sqlite3CodeSubselect(pParse, pExpr, 0, 0); + } break; } + case TK_SELECT_COLUMN: { + int n; + if( pExpr->pLeft->iTable==0 ){ + pExpr->pLeft->iTable = sqlite3CodeSubselect(pParse, pExpr->pLeft, 0, 0); + } + assert( pExpr->iTable==0 || pExpr->pLeft->op==TK_SELECT ); + if( pExpr->iTable + && pExpr->iTable!=(n = sqlite3ExprVectorSize(pExpr->pLeft)) + ){ + sqlite3ErrorMsg(pParse, "%d columns assigned %d values", + pExpr->iTable, n); + } + return pExpr->pLeft->iTable + pExpr->iColumn; + } case TK_IN: { int destIfFalse = sqlite3VdbeMakeLabel(v); int destIfNull = sqlite3VdbeMakeLabel(v); @@ -79260,7 +94308,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) sqlite3VdbeResolveLabel(v, destIfFalse); sqlite3VdbeAddOp2(v, OP_AddImm, target, 0); sqlite3VdbeResolveLabel(v, destIfNull); - break; + return target; } #endif /* SQLITE_OMIT_SUBQUERY */ @@ -79277,33 +94325,13 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) ** Z is stored in pExpr->pList->a[1].pExpr. */ case TK_BETWEEN: { - Expr *pLeft = pExpr->pLeft; - struct ExprList_item *pLItem = pExpr->x.pList->a; - Expr *pRight = pLItem->pExpr; - - r1 = sqlite3ExprCodeTemp(pParse, pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pRight, ®Free2); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - r3 = sqlite3GetTempReg(pParse); - r4 = sqlite3GetTempReg(pParse); - codeCompare(pParse, pLeft, pRight, OP_Ge, - r1, r2, r3, SQLITE_STOREP2); - pLItem++; - pRight = pLItem->pExpr; - sqlite3ReleaseTempReg(pParse, regFree2); - r2 = sqlite3ExprCodeTemp(pParse, pRight, ®Free2); - testcase( regFree2==0 ); - codeCompare(pParse, pLeft, pRight, OP_Le, r1, r2, r4, SQLITE_STOREP2); - sqlite3VdbeAddOp3(v, OP_And, r3, r4, target); - sqlite3ReleaseTempReg(pParse, r3); - sqlite3ReleaseTempReg(pParse, r4); - break; + exprCodeBetween(pParse, pExpr, target, 0, 0); + return target; } + case TK_SPAN: case TK_COLLATE: case TK_UPLUS: { - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - break; + return sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); } case TK_TRIGGER: { @@ -79349,7 +94377,10 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) #ifndef SQLITE_OMIT_FLOATING_POINT /* If the column has REAL affinity, it may currently be stored as an - ** integer. Use OP_RealAffinity to make sure it is really real. */ + ** integer. Use OP_RealAffinity to make sure it is really real. + ** + ** EVIDENCE-OF: R-60985-57662 SQLite will convert the value back to + ** floating point when extracting it from the record. */ if( pExpr->iColumn>=0 && pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL ){ @@ -79359,6 +94390,10 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) break; } + case TK_VECTOR: { + sqlite3ErrorMsg(pParse, "row value misused"); + break; + } /* ** Form A: @@ -79402,8 +94437,9 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) if( (pX = pExpr->pLeft)!=0 ){ tempX = *pX; testcase( pX->op==TK_COLUMN ); - exprToRegister(&tempX, sqlite3ExprCodeTemp(pParse, pX, ®Free1)); + exprToRegister(&tempX, exprCodeVector(pParse, &tempX, ®Free1)); testcase( regFree1==0 ); + memset(&opCompare, 0, sizeof(opCompare)); opCompare.op = TK_EQ; opCompare.pLeft = &tempX; pTest = &opCompare; @@ -79426,18 +94462,18 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) sqlite3ExprIfFalse(pParse, pTest, nextCase, SQLITE_JUMPIFNULL); testcase( aListelem[i+1].pExpr->op==TK_COLUMN ); sqlite3ExprCode(pParse, aListelem[i+1].pExpr, target); - sqlite3VdbeAddOp2(v, OP_Goto, 0, endLabel); - sqlite3ExprCachePop(pParse, 1); + sqlite3VdbeGoto(v, endLabel); + sqlite3ExprCachePop(pParse); sqlite3VdbeResolveLabel(v, nextCase); } if( (nExpr&1)!=0 ){ sqlite3ExprCachePush(pParse); sqlite3ExprCode(pParse, pEList->a[nExpr-1].pExpr, target); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); }else{ sqlite3VdbeAddOp2(v, OP_Null, 0, target); } - assert( db->mallocFailed || pParse->nErr>0 + assert( pParse->db->mallocFailed || pParse->nErr>0 || pParse->iCacheLevel==iCacheLevel ); sqlite3VdbeResolveLabel(v, endLabel); break; @@ -79461,6 +94497,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) if( pExpr->affinity==OE_Ignore ){ sqlite3VdbeAddOp4( v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0); + VdbeCoverage(v); }else{ sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_TRIGGER, pExpr->affinity, pExpr->u.zToken, 0, 0); @@ -79477,24 +94514,40 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target) /* ** Factor out the code of the given expression to initialization time. +** +** If regDest>=0 then the result is always stored in that register and the +** result is not reusable. If regDest<0 then this routine is free to +** store the value whereever it wants. The register where the expression +** is stored is returned. When regDest<0, two identical expressions will +** code to the same register. */ -SQLITE_PRIVATE void sqlite3ExprCodeAtInit( +SQLITE_PRIVATE int sqlite3ExprCodeAtInit( Parse *pParse, /* Parsing context */ Expr *pExpr, /* The expression to code when the VDBE initializes */ - int regDest, /* Store the value in this register */ - u8 reusable /* True if this expression is reusable */ + int regDest /* Store the value in this register */ ){ ExprList *p; assert( ConstFactorOk(pParse) ); p = pParse->pConstExpr; + if( regDest<0 && p ){ + struct ExprList_item *pItem; + int i; + for(pItem=p->a, i=p->nExpr; i>0; pItem++, i--){ + if( pItem->reusable && sqlite3ExprCompare(pItem->pExpr,pExpr,-1)==0 ){ + return pItem->u.iConstExprReg; + } + } + } pExpr = sqlite3ExprDup(pParse->db, pExpr, 0); p = sqlite3ExprListAppend(pParse, p, pExpr); if( p ){ struct ExprList_item *pItem = &p->a[p->nExpr-1]; + pItem->reusable = regDest<0; + if( regDest<0 ) regDest = ++pParse->nMem; pItem->u.iConstExprReg = regDest; - pItem->reusable = reusable; } pParse->pConstExpr = p; + return regDest; } /* @@ -79517,19 +94570,8 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){ && pExpr->op!=TK_REGISTER && sqlite3ExprIsConstantNotJoin(pExpr) ){ - ExprList *p = pParse->pConstExpr; - int i; *pReg = 0; - if( p ){ - struct ExprList_item *pItem; - for(pItem=p->a, i=p->nExpr; i>0; pItem++, i--){ - if( pItem->reusable && sqlite3ExprCompare(pItem->pExpr,pExpr,-1)==0 ){ - return pItem->u.iConstExprReg; - } - } - } - r2 = ++pParse->nMem; - sqlite3ExprCodeAtInit(pParse, pExpr, r2, 1); + r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1); }else{ int r1 = sqlite3GetTempReg(pParse); r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1); @@ -79548,7 +94590,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){ ** results in register target. The results are guaranteed to appear ** in register target. */ -SQLITE_PRIVATE int sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ +SQLITE_PRIVATE void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ int inReg; assert( target>0 && target<=pParse->nMem ); @@ -79556,16 +94598,41 @@ SQLITE_PRIVATE int sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ sqlite3VdbeAddOp2(pParse->pVdbe, OP_Copy, pExpr->iTable, target); }else{ inReg = sqlite3ExprCodeTarget(pParse, pExpr, target); - assert( pParse->pVdbe || pParse->db->mallocFailed ); + assert( pParse->pVdbe!=0 || pParse->db->mallocFailed ); if( inReg!=target && pParse->pVdbe ){ sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target); } } - return target; } /* -** Generate code that evalutes the given expression and puts the result +** Make a transient copy of expression pExpr and then code it using +** sqlite3ExprCode(). This routine works just like sqlite3ExprCode() +** except that the input expression is guaranteed to be unchanged. +*/ +SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse *pParse, Expr *pExpr, int target){ + sqlite3 *db = pParse->db; + pExpr = sqlite3ExprDup(db, pExpr, 0); + if( !db->mallocFailed ) sqlite3ExprCode(pParse, pExpr, target); + sqlite3ExprDelete(db, pExpr); +} + +/* +** Generate code that will evaluate expression pExpr and store the +** results in register target. The results are guaranteed to appear +** in register target. If the expression is constant, then this routine +** might choose to code the expression at initialization time. +*/ +SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse *pParse, Expr *pExpr, int target){ + if( pParse->okConstFactor && sqlite3ExprIsConstant(pExpr) ){ + sqlite3ExprCodeAtInit(pParse, pExpr, target); + }else{ + sqlite3ExprCode(pParse, pExpr, target); + } +} + +/* +** Generate code that evaluates the given expression and puts the result ** in register target. ** ** Also make a copy of the expression results into another "cache" register @@ -79576,299 +94643,18 @@ SQLITE_PRIVATE int sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ ** times. They are evaluated once and the results of the expression ** are reused. */ -SQLITE_PRIVATE int sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){ +SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){ Vdbe *v = pParse->pVdbe; - int inReg; - inReg = sqlite3ExprCode(pParse, pExpr, target); + int iMem; + assert( target>0 ); - /* The only place, other than this routine, where expressions can be - ** converted to TK_REGISTER is internal subexpressions in BETWEEN and - ** CASE operators. Neither ever calls this routine. And this routine - ** is never called twice on the same expression. Hence it is impossible - ** for the input to this routine to already be a register. Nevertheless, - ** it seems prudent to keep the ALWAYS() in case the conditions above - ** change with future modifications or enhancements. */ - if( ALWAYS(pExpr->op!=TK_REGISTER) ){ - int iMem; - iMem = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Copy, inReg, iMem); - exprToRegister(pExpr, iMem); - } - return inReg; + assert( pExpr->op!=TK_REGISTER ); + sqlite3ExprCode(pParse, pExpr, target); + iMem = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Copy, target, iMem); + exprToRegister(pExpr, iMem); } -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) -/* -** Generate a human-readable explanation of an expression tree. -*/ -SQLITE_PRIVATE void sqlite3ExplainExpr(Vdbe *pOut, Expr *pExpr){ - int op; /* The opcode being coded */ - const char *zBinOp = 0; /* Binary operator */ - const char *zUniOp = 0; /* Unary operator */ - if( pExpr==0 ){ - op = TK_NULL; - }else{ - op = pExpr->op; - } - switch( op ){ - case TK_AGG_COLUMN: { - sqlite3ExplainPrintf(pOut, "AGG{%d:%d}", - pExpr->iTable, pExpr->iColumn); - break; - } - case TK_COLUMN: { - if( pExpr->iTable<0 ){ - /* This only happens when coding check constraints */ - sqlite3ExplainPrintf(pOut, "COLUMN(%d)", pExpr->iColumn); - }else{ - sqlite3ExplainPrintf(pOut, "{%d:%d}", - pExpr->iTable, pExpr->iColumn); - } - break; - } - case TK_INTEGER: { - if( pExpr->flags & EP_IntValue ){ - sqlite3ExplainPrintf(pOut, "%d", pExpr->u.iValue); - }else{ - sqlite3ExplainPrintf(pOut, "%s", pExpr->u.zToken); - } - break; - } -#ifndef SQLITE_OMIT_FLOATING_POINT - case TK_FLOAT: { - sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken); - break; - } -#endif - case TK_STRING: { - sqlite3ExplainPrintf(pOut,"%Q", pExpr->u.zToken); - break; - } - case TK_NULL: { - sqlite3ExplainPrintf(pOut,"NULL"); - break; - } -#ifndef SQLITE_OMIT_BLOB_LITERAL - case TK_BLOB: { - sqlite3ExplainPrintf(pOut,"%s", pExpr->u.zToken); - break; - } -#endif - case TK_VARIABLE: { - sqlite3ExplainPrintf(pOut,"VARIABLE(%s,%d)", - pExpr->u.zToken, pExpr->iColumn); - break; - } - case TK_REGISTER: { - sqlite3ExplainPrintf(pOut,"REGISTER(%d)", pExpr->iTable); - break; - } - case TK_AS: { - sqlite3ExplainExpr(pOut, pExpr->pLeft); - break; - } -#ifndef SQLITE_OMIT_CAST - case TK_CAST: { - /* Expressions of the form: CAST(pLeft AS token) */ - const char *zAff = "unk"; - switch( sqlite3AffinityType(pExpr->u.zToken, 0) ){ - case SQLITE_AFF_TEXT: zAff = "TEXT"; break; - case SQLITE_AFF_NONE: zAff = "NONE"; break; - case SQLITE_AFF_NUMERIC: zAff = "NUMERIC"; break; - case SQLITE_AFF_INTEGER: zAff = "INTEGER"; break; - case SQLITE_AFF_REAL: zAff = "REAL"; break; - } - sqlite3ExplainPrintf(pOut, "CAST-%s(", zAff); - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut, ")"); - break; - } -#endif /* SQLITE_OMIT_CAST */ - case TK_LT: zBinOp = "LT"; break; - case TK_LE: zBinOp = "LE"; break; - case TK_GT: zBinOp = "GT"; break; - case TK_GE: zBinOp = "GE"; break; - case TK_NE: zBinOp = "NE"; break; - case TK_EQ: zBinOp = "EQ"; break; - case TK_IS: zBinOp = "IS"; break; - case TK_ISNOT: zBinOp = "ISNOT"; break; - case TK_AND: zBinOp = "AND"; break; - case TK_OR: zBinOp = "OR"; break; - case TK_PLUS: zBinOp = "ADD"; break; - case TK_STAR: zBinOp = "MUL"; break; - case TK_MINUS: zBinOp = "SUB"; break; - case TK_REM: zBinOp = "REM"; break; - case TK_BITAND: zBinOp = "BITAND"; break; - case TK_BITOR: zBinOp = "BITOR"; break; - case TK_SLASH: zBinOp = "DIV"; break; - case TK_LSHIFT: zBinOp = "LSHIFT"; break; - case TK_RSHIFT: zBinOp = "RSHIFT"; break; - case TK_CONCAT: zBinOp = "CONCAT"; break; - - case TK_UMINUS: zUniOp = "UMINUS"; break; - case TK_UPLUS: zUniOp = "UPLUS"; break; - case TK_BITNOT: zUniOp = "BITNOT"; break; - case TK_NOT: zUniOp = "NOT"; break; - case TK_ISNULL: zUniOp = "ISNULL"; break; - case TK_NOTNULL: zUniOp = "NOTNULL"; break; - - case TK_COLLATE: { - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut,".COLLATE(%s)",pExpr->u.zToken); - break; - } - - case TK_AGG_FUNCTION: - case TK_FUNCTION: { - ExprList *pFarg; /* List of function arguments */ - if( ExprHasProperty(pExpr, EP_TokenOnly) ){ - pFarg = 0; - }else{ - pFarg = pExpr->x.pList; - } - if( op==TK_AGG_FUNCTION ){ - sqlite3ExplainPrintf(pOut, "AGG_FUNCTION%d:%s(", - pExpr->op2, pExpr->u.zToken); - }else{ - sqlite3ExplainPrintf(pOut, "FUNCTION:%s(", pExpr->u.zToken); - } - if( pFarg ){ - sqlite3ExplainExprList(pOut, pFarg); - } - sqlite3ExplainPrintf(pOut, ")"); - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_EXISTS: { - sqlite3ExplainPrintf(pOut, "EXISTS("); - sqlite3ExplainSelect(pOut, pExpr->x.pSelect); - sqlite3ExplainPrintf(pOut,")"); - break; - } - case TK_SELECT: { - sqlite3ExplainPrintf(pOut, "("); - sqlite3ExplainSelect(pOut, pExpr->x.pSelect); - sqlite3ExplainPrintf(pOut, ")"); - break; - } - case TK_IN: { - sqlite3ExplainPrintf(pOut, "IN("); - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut, ","); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - sqlite3ExplainSelect(pOut, pExpr->x.pSelect); - }else{ - sqlite3ExplainExprList(pOut, pExpr->x.pList); - } - sqlite3ExplainPrintf(pOut, ")"); - break; - } -#endif /* SQLITE_OMIT_SUBQUERY */ - - /* - ** x BETWEEN y AND z - ** - ** This is equivalent to - ** - ** x>=y AND x<=z - ** - ** X is stored in pExpr->pLeft. - ** Y is stored in pExpr->pList->a[0].pExpr. - ** Z is stored in pExpr->pList->a[1].pExpr. - */ - case TK_BETWEEN: { - Expr *pX = pExpr->pLeft; - Expr *pY = pExpr->x.pList->a[0].pExpr; - Expr *pZ = pExpr->x.pList->a[1].pExpr; - sqlite3ExplainPrintf(pOut, "BETWEEN("); - sqlite3ExplainExpr(pOut, pX); - sqlite3ExplainPrintf(pOut, ","); - sqlite3ExplainExpr(pOut, pY); - sqlite3ExplainPrintf(pOut, ","); - sqlite3ExplainExpr(pOut, pZ); - sqlite3ExplainPrintf(pOut, ")"); - break; - } - case TK_TRIGGER: { - /* If the opcode is TK_TRIGGER, then the expression is a reference - ** to a column in the new.* or old.* pseudo-tables available to - ** trigger programs. In this case Expr.iTable is set to 1 for the - ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn - ** is set to the column of the pseudo-table to read, or to -1 to - ** read the rowid field. - */ - sqlite3ExplainPrintf(pOut, "%s(%d)", - pExpr->iTable ? "NEW" : "OLD", pExpr->iColumn); - break; - } - case TK_CASE: { - sqlite3ExplainPrintf(pOut, "CASE("); - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut, ","); - sqlite3ExplainExprList(pOut, pExpr->x.pList); - break; - } -#ifndef SQLITE_OMIT_TRIGGER - case TK_RAISE: { - const char *zType = "unk"; - switch( pExpr->affinity ){ - case OE_Rollback: zType = "rollback"; break; - case OE_Abort: zType = "abort"; break; - case OE_Fail: zType = "fail"; break; - case OE_Ignore: zType = "ignore"; break; - } - sqlite3ExplainPrintf(pOut, "RAISE-%s(%s)", zType, pExpr->u.zToken); - break; - } -#endif - } - if( zBinOp ){ - sqlite3ExplainPrintf(pOut,"%s(", zBinOp); - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut,","); - sqlite3ExplainExpr(pOut, pExpr->pRight); - sqlite3ExplainPrintf(pOut,")"); - }else if( zUniOp ){ - sqlite3ExplainPrintf(pOut,"%s(", zUniOp); - sqlite3ExplainExpr(pOut, pExpr->pLeft); - sqlite3ExplainPrintf(pOut,")"); - } -} -#endif /* defined(SQLITE_ENABLE_TREE_EXPLAIN) */ - -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) -/* -** Generate a human-readable explanation of an expression list. -*/ -SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe *pOut, ExprList *pList){ - int i; - if( pList==0 || pList->nExpr==0 ){ - sqlite3ExplainPrintf(pOut, "(empty-list)"); - return; - }else if( pList->nExpr==1 ){ - sqlite3ExplainExpr(pOut, pList->a[0].pExpr); - }else{ - sqlite3ExplainPush(pOut); - for(i=0; inExpr; i++){ - sqlite3ExplainPrintf(pOut, "item[%d] = ", i); - sqlite3ExplainPush(pOut); - sqlite3ExplainExpr(pOut, pList->a[i].pExpr); - sqlite3ExplainPop(pOut); - if( pList->a[i].zName ){ - sqlite3ExplainPrintf(pOut, " AS %s", pList->a[i].zName); - } - if( pList->a[i].bSpanIsTab ){ - sqlite3ExplainPrintf(pOut, " (%s)", pList->a[i].zSpan); - } - if( inExpr-1 ){ - sqlite3ExplainNL(pOut); - } - } - sqlite3ExplainPop(pOut); - } -} -#endif /* SQLITE_DEBUG */ - /* ** Generate code that pushes the value of every element of the given ** expression list into a sequence of registers beginning at target. @@ -79880,16 +94666,22 @@ SQLITE_PRIVATE void sqlite3ExplainExprList(Vdbe *pOut, ExprList *pList){ ** ** The SQLITE_ECEL_FACTOR argument allows constant arguments to be ** factored out into initialization code. +** +** The SQLITE_ECEL_REF flag means that expressions in the list with +** ExprList.a[].u.x.iOrderByCol>0 have already been evaluated and stored +** in registers at srcReg, and so the value can be copied from there. */ SQLITE_PRIVATE int sqlite3ExprCodeExprList( Parse *pParse, /* Parsing context */ ExprList *pList, /* The expression list to be coded */ int target, /* Where to write results */ + int srcReg, /* Source registers if SQLITE_ECEL_REF */ u8 flags /* SQLITE_ECEL_* flags */ ){ struct ExprList_item *pItem; - int i, n; + int i, j, n; u8 copyOp = (flags & SQLITE_ECEL_DUP) ? OP_Copy : OP_SCopy; + Vdbe *v = pParse->pVdbe; assert( pList!=0 ); assert( target>0 ); assert( pParse->pVdbe!=0 ); /* Never gets this far otherwise */ @@ -79897,13 +94689,19 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList( if( !ConstFactorOk(pParse) ) flags &= ~SQLITE_ECEL_FACTOR; for(pItem=pList->a, i=0; ipExpr; - if( (flags & SQLITE_ECEL_FACTOR)!=0 && sqlite3ExprIsConstant(pExpr) ){ - sqlite3ExprCodeAtInit(pParse, pExpr, target+i, 0); + if( (flags & SQLITE_ECEL_REF)!=0 && (j = pItem->u.x.iOrderByCol)>0 ){ + if( flags & SQLITE_ECEL_OMITREF ){ + i--; + n--; + }else{ + sqlite3VdbeAddOp2(v, copyOp, j+srcReg-1, target+i); + } + }else if( (flags & SQLITE_ECEL_FACTOR)!=0 && sqlite3ExprIsConstant(pExpr) ){ + sqlite3ExprCodeAtInit(pParse, pExpr, target+i); }else{ int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i); if( inReg!=target+i ){ VdbeOp *pOp; - Vdbe *v = pParse->pVdbe; if( copyOp==OP_Copy && (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy && pOp->p1+pOp->p3+1==inReg @@ -79929,21 +94727,34 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList( ** x>=y AND x<=z ** ** Code it as such, taking care to do the common subexpression -** elementation of x. +** elimination of x. +** +** The xJumpIf parameter determines details: +** +** NULL: Store the boolean result in reg[dest] +** sqlite3ExprIfTrue: Jump to dest if true +** sqlite3ExprIfFalse: Jump to dest if false +** +** The jumpIfNull parameter is ignored if xJumpIf is NULL. */ static void exprCodeBetween( Parse *pParse, /* Parsing and code generating context */ Expr *pExpr, /* The BETWEEN expression */ - int dest, /* Jump here if the jump is taken */ - int jumpIfTrue, /* Take the jump if the BETWEEN is true */ + int dest, /* Jump destination or storage location */ + void (*xJump)(Parse*,Expr*,int,int), /* Action to take */ int jumpIfNull /* Take the jump if the BETWEEN is NULL */ ){ - Expr exprAnd; /* The AND operator in x>=y AND x<=z */ + Expr exprAnd; /* The AND operator in x>=y AND x<=z */ Expr compLeft; /* The x>=y term */ Expr compRight; /* The x<=z term */ Expr exprX; /* The x subexpression */ int regFree1 = 0; /* Temporary use register */ + + memset(&compLeft, 0, sizeof(Expr)); + memset(&compRight, 0, sizeof(Expr)); + memset(&exprAnd, 0, sizeof(Expr)); + assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); exprX = *pExpr->pLeft; exprAnd.op = TK_AND; @@ -79955,23 +94766,30 @@ static void exprCodeBetween( compRight.op = TK_LE; compRight.pLeft = &exprX; compRight.pRight = pExpr->x.pList->a[1].pExpr; - exprToRegister(&exprX, sqlite3ExprCodeTemp(pParse, &exprX, ®Free1)); - if( jumpIfTrue ){ - sqlite3ExprIfTrue(pParse, &exprAnd, dest, jumpIfNull); + exprToRegister(&exprX, exprCodeVector(pParse, &exprX, ®Free1)); + if( xJump ){ + xJump(pParse, &exprAnd, dest, jumpIfNull); }else{ - sqlite3ExprIfFalse(pParse, &exprAnd, dest, jumpIfNull); + /* Mark the expression is being from the ON or USING clause of a join + ** so that the sqlite3ExprCodeTarget() routine will not attempt to move + ** it into the Parse.pConstExpr list. We should use a new bit for this, + ** for clarity, but we are out of bits in the Expr.flags field so we + ** have to reuse the EP_FromJoin bit. Bummer. */ + exprX.flags |= EP_FromJoin; + sqlite3ExprCodeTarget(pParse, &exprAnd, dest); } sqlite3ReleaseTempReg(pParse, regFree1); /* Ensure adequate test coverage */ - testcase( jumpIfTrue==0 && jumpIfNull==0 && regFree1==0 ); - testcase( jumpIfTrue==0 && jumpIfNull==0 && regFree1!=0 ); - testcase( jumpIfTrue==0 && jumpIfNull!=0 && regFree1==0 ); - testcase( jumpIfTrue==0 && jumpIfNull!=0 && regFree1!=0 ); - testcase( jumpIfTrue!=0 && jumpIfNull==0 && regFree1==0 ); - testcase( jumpIfTrue!=0 && jumpIfNull==0 && regFree1!=0 ); - testcase( jumpIfTrue!=0 && jumpIfNull!=0 && regFree1==0 ); - testcase( jumpIfTrue!=0 && jumpIfNull!=0 && regFree1!=0 ); + testcase( xJump==sqlite3ExprIfTrue && jumpIfNull==0 && regFree1==0 ); + testcase( xJump==sqlite3ExprIfTrue && jumpIfNull==0 && regFree1!=0 ); + testcase( xJump==sqlite3ExprIfTrue && jumpIfNull!=0 && regFree1==0 ); + testcase( xJump==sqlite3ExprIfTrue && jumpIfNull!=0 && regFree1!=0 ); + testcase( xJump==sqlite3ExprIfFalse && jumpIfNull==0 && regFree1==0 ); + testcase( xJump==sqlite3ExprIfFalse && jumpIfNull==0 && regFree1!=0 ); + testcase( xJump==sqlite3ExprIfFalse && jumpIfNull!=0 && regFree1==0 ); + testcase( xJump==sqlite3ExprIfFalse && jumpIfNull!=0 && regFree1!=0 ); + testcase( xJump==0 ); } /* @@ -80007,7 +94825,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprCachePush(pParse); sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); break; } case TK_OR: { @@ -80015,7 +94833,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); sqlite3ExprCachePush(pParse); sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); break; } case TK_NOT: { @@ -80023,60 +94841,53 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); break; } + case TK_IS: + case TK_ISNOT: + testcase( op==TK_IS ); + testcase( op==TK_ISNOT ); + op = (op==TK_IS) ? TK_EQ : TK_NE; + jumpIfNull = SQLITE_NULLEQ; + /* Fall thru */ case TK_LT: case TK_LE: case TK_GT: case TK_GE: case TK_NE: case TK_EQ: { - assert( TK_LT==OP_Lt ); - assert( TK_LE==OP_Le ); - assert( TK_GT==OP_Gt ); - assert( TK_GE==OP_Ge ); - assert( TK_EQ==OP_Eq ); - assert( TK_NE==OP_Ne ); - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); + if( sqlite3ExprIsVector(pExpr->pLeft) ) goto default_expr; testcase( jumpIfNull==0 ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, r1, r2, dest, jumpIfNull); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( op==TK_IS ); - testcase( op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (op==TK_IS) ? TK_EQ : TK_NE; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, SQLITE_NULLEQ); + assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); + assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); + assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); + assert(TK_GE==OP_Ge); testcase(op==OP_Ge); VdbeCoverageIf(v,op==OP_Ge); + assert(TK_EQ==OP_Eq); testcase(op==OP_Eq); + VdbeCoverageIf(v, op==OP_Eq && jumpIfNull==SQLITE_NULLEQ); + VdbeCoverageIf(v, op==OP_Eq && jumpIfNull!=SQLITE_NULLEQ); + assert(TK_NE==OP_Ne); testcase(op==OP_Ne); + VdbeCoverageIf(v, op==OP_Ne && jumpIfNull==SQLITE_NULLEQ); + VdbeCoverageIf(v, op==OP_Ne && jumpIfNull!=SQLITE_NULLEQ); testcase( regFree1==0 ); testcase( regFree2==0 ); break; } case TK_ISNULL: case TK_NOTNULL: { - assert( TK_ISNULL==OP_IsNull ); - assert( TK_NOTNULL==OP_NotNull ); - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); + assert( TK_ISNULL==OP_IsNull ); testcase( op==TK_ISNULL ); + assert( TK_NOTNULL==OP_NotNull ); testcase( op==TK_NOTNULL ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); sqlite3VdbeAddOp2(v, op, r1, dest); + VdbeCoverageIf(v, op==TK_ISNULL); + VdbeCoverageIf(v, op==TK_NOTNULL); testcase( regFree1==0 ); break; } case TK_BETWEEN: { testcase( jumpIfNull==0 ); - exprCodeBetween(pParse, pExpr, dest, 1, jumpIfNull); + exprCodeBetween(pParse, pExpr, dest, sqlite3ExprIfTrue, jumpIfNull); break; } #ifndef SQLITE_OMIT_SUBQUERY @@ -80084,19 +94895,21 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int int destIfFalse = sqlite3VdbeMakeLabel(v); int destIfNull = jumpIfNull ? dest : destIfFalse; sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); sqlite3VdbeResolveLabel(v, destIfFalse); break; } #endif default: { + default_expr: if( exprAlwaysTrue(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); }else if( exprAlwaysFalse(pExpr) ){ /* No-op */ }else{ r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); sqlite3VdbeAddOp3(v, OP_If, r1, dest, jumpIfNull!=0); + VdbeCoverage(v); testcase( regFree1==0 ); testcase( jumpIfNull==0 ); } @@ -80164,7 +94977,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); sqlite3ExprCachePush(pParse); sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); break; } case TK_OR: { @@ -80174,7 +94987,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprCachePush(pParse); sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse, 1); + sqlite3ExprCachePop(pParse); break; } case TK_NOT: { @@ -80182,52 +94995,51 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); break; } + case TK_IS: + case TK_ISNOT: + testcase( pExpr->op==TK_IS ); + testcase( pExpr->op==TK_ISNOT ); + op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ; + jumpIfNull = SQLITE_NULLEQ; + /* Fall thru */ case TK_LT: case TK_LE: case TK_GT: case TK_GE: case TK_NE: case TK_EQ: { - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); + if( sqlite3ExprIsVector(pExpr->pLeft) ) goto default_expr; testcase( jumpIfNull==0 ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, r1, r2, dest, jumpIfNull); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( pExpr->op==TK_IS ); - testcase( pExpr->op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, SQLITE_NULLEQ); + assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt); + assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le); + assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt); + assert(TK_GE==OP_Ge); testcase(op==OP_Ge); VdbeCoverageIf(v,op==OP_Ge); + assert(TK_EQ==OP_Eq); testcase(op==OP_Eq); + VdbeCoverageIf(v, op==OP_Eq && jumpIfNull!=SQLITE_NULLEQ); + VdbeCoverageIf(v, op==OP_Eq && jumpIfNull==SQLITE_NULLEQ); + assert(TK_NE==OP_Ne); testcase(op==OP_Ne); + VdbeCoverageIf(v, op==OP_Ne && jumpIfNull!=SQLITE_NULLEQ); + VdbeCoverageIf(v, op==OP_Ne && jumpIfNull==SQLITE_NULLEQ); testcase( regFree1==0 ); testcase( regFree2==0 ); break; } case TK_ISNULL: case TK_NOTNULL: { - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); sqlite3VdbeAddOp2(v, op, r1, dest); + testcase( op==TK_ISNULL ); VdbeCoverageIf(v, op==TK_ISNULL); + testcase( op==TK_NOTNULL ); VdbeCoverageIf(v, op==TK_NOTNULL); testcase( regFree1==0 ); break; } case TK_BETWEEN: { testcase( jumpIfNull==0 ); - exprCodeBetween(pParse, pExpr, dest, 0, jumpIfNull); + exprCodeBetween(pParse, pExpr, dest, sqlite3ExprIfFalse, jumpIfNull); break; } #ifndef SQLITE_OMIT_SUBQUERY @@ -80243,13 +95055,15 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int } #endif default: { + default_expr: if( exprAlwaysFalse(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); }else if( exprAlwaysTrue(pExpr) ){ /* no-op */ }else{ r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); sqlite3VdbeAddOp3(v, OP_IfNot, r1, dest, jumpIfNull!=0); + VdbeCoverage(v); testcase( regFree1==0 ); testcase( jumpIfNull==0 ); } @@ -80260,6 +95074,21 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int sqlite3ReleaseTempReg(pParse, regFree2); } +/* +** Like sqlite3ExprIfFalse() except that a copy is made of pExpr before +** code generation, and that copy is deleted after code generation. This +** ensures that the original pExpr is unchanged. +*/ +SQLITE_PRIVATE void sqlite3ExprIfFalseDup(Parse *pParse, Expr *pExpr, int dest,int jumpIfNull){ + sqlite3 *db = pParse->db; + Expr *pCopy = sqlite3ExprDup(db, pExpr, 0); + if( db->mallocFailed==0 ){ + sqlite3ExprIfFalse(pParse, pCopy, dest, jumpIfNull); + } + sqlite3ExprDelete(db, pCopy); +} + + /* ** Do a deep comparison of two expression trees. Return 0 if the two ** expressions are completely identical. Return 1 if they differ only @@ -80303,8 +95132,10 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Expr *pA, Expr *pB, int iTab){ } return 2; } - if( pA->op!=TK_COLUMN && ALWAYS(pA->op!=TK_AGG_COLUMN) && pA->u.zToken ){ - if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ + if( pA->op!=TK_COLUMN && pA->op!=TK_AGG_COLUMN && pA->u.zToken ){ + if( pA->op==TK_FUNCTION ){ + if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; + }else if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ return pA->op==TK_COLLATE ? 1 : 2; } } @@ -80314,7 +95145,7 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Expr *pA, Expr *pB, int iTab){ if( sqlite3ExprCompare(pA->pLeft, pB->pLeft, iTab) ) return 2; if( sqlite3ExprCompare(pA->pRight, pB->pRight, iTab) ) return 2; if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2; - if( ALWAYS((combinedFlags & EP_Reduced)==0) ){ + if( ALWAYS((combinedFlags & EP_Reduced)==0) && pA->op!=TK_STRING ){ if( pA->iColumn!=pB->iColumn ) return 2; if( pA->iTable!=pB->iTable && (pA->iTable!=iTab || NEVER(pB->iTable>=0)) ) return 2; @@ -80382,15 +95213,69 @@ SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Expr *pE1, Expr *pE2, int iTab){ ){ return 1; } - if( pE2->op==TK_NOTNULL - && sqlite3ExprCompare(pE1->pLeft, pE2->pLeft, iTab)==0 - && (pE1->op!=TK_ISNULL && pE1->op!=TK_IS) - ){ - return 1; + if( pE2->op==TK_NOTNULL && pE1->op!=TK_ISNULL && pE1->op!=TK_IS ){ + Expr *pX = sqlite3ExprSkipCollate(pE1->pLeft); + testcase( pX!=pE1->pLeft ); + if( sqlite3ExprCompare(pX, pE2->pLeft, iTab)==0 ) return 1; } return 0; } +/* +** An instance of the following structure is used by the tree walker +** to determine if an expression can be evaluated by reference to the +** index only, without having to do a search for the corresponding +** table entry. The IdxCover.pIdx field is the index. IdxCover.iCur +** is the cursor for the table. +*/ +struct IdxCover { + Index *pIdx; /* The index to be tested for coverage */ + int iCur; /* Cursor number for the table corresponding to the index */ +}; + +/* +** Check to see if there are references to columns in table +** pWalker->u.pIdxCover->iCur can be satisfied using the index +** pWalker->u.pIdxCover->pIdx. +*/ +static int exprIdxCover(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_COLUMN + && pExpr->iTable==pWalker->u.pIdxCover->iCur + && sqlite3ColumnOfIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0 + ){ + pWalker->eCode = 1; + return WRC_Abort; + } + return WRC_Continue; +} + +/* +** Determine if an index pIdx on table with cursor iCur contains will +** the expression pExpr. Return true if the index does cover the +** expression and false if the pExpr expression references table columns +** that are not found in the index pIdx. +** +** An index covering an expression means that the expression can be +** evaluated using only the index and without having to lookup the +** corresponding table entry. +*/ +SQLITE_PRIVATE int sqlite3ExprCoveredByIndex( + Expr *pExpr, /* The index to be tested */ + int iCur, /* The cursor number for the corresponding table */ + Index *pIdx /* The index that might be used for coverage */ +){ + Walker w; + struct IdxCover xcov; + memset(&w, 0, sizeof(w)); + xcov.iCur = iCur; + xcov.pIdx = pIdx; + w.xExprCallback = exprIdxCover; + w.u.pIdxCover = &xcov; + sqlite3WalkExpr(&w, pExpr); + return !w.eCode; +} + + /* ** An instance of the following structure is used by the tree walker ** to count references to table columns in the arguments of an @@ -80416,10 +95301,11 @@ static int exprSrcCount(Walker *pWalker, Expr *pExpr){ int i; struct SrcCount *p = pWalker->u.pSrcCount; SrcList *pSrc = p->pSrc; - for(i=0; inSrc; i++){ + int nSrc = pSrc ? pSrc->nSrc : 0; + for(i=0; iiTable==pSrc->a[i].iCursor ) break; } - if( inSrc ){ + if( inThis++; }else{ p->nOther++; @@ -80587,7 +95473,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){ pItem->iMem = ++pParse->nMem; assert( !ExprHasProperty(pExpr, EP_IntValue) ); pItem->pFunc = sqlite3FindFunction(pParse->db, - pExpr->u.zToken, sqlite3Strlen30(pExpr->u.zToken), + pExpr->u.zToken, pExpr->x.pList ? pExpr->x.pList->nExpr : 0, enc, 0); if( pExpr->flags & EP_Distinct ){ pItem->iDistinct = pParse->nTab++; @@ -80666,14 +95552,14 @@ SQLITE_PRIVATE int sqlite3GetTempReg(Parse *pParse){ ** purpose. ** ** If a register is currently being used by the column cache, then -** the dallocation is deferred until the column cache line that uses +** the deallocation is deferred until the column cache line that uses ** the register becomes stale. */ SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ if( iReg && pParse->nTempRegaTempReg) ){ int i; struct yColCache *p; - for(i=0, p=pParse->aColCache; iaColCache; inColCache; i++, p++){ if( p->iReg==iReg ){ p->tempReg = 1; return; @@ -80684,10 +95570,11 @@ SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ } /* -** Allocate or deallocate a block of nReg consecutive registers +** Allocate or deallocate a block of nReg consecutive registers. */ SQLITE_PRIVATE int sqlite3GetTempRange(Parse *pParse, int nReg){ int i, n; + if( nReg==1 ) return sqlite3GetTempReg(pParse); i = pParse->iRangeReg; n = pParse->nRangeReg; if( nReg<=n ){ @@ -80701,6 +95588,10 @@ SQLITE_PRIVATE int sqlite3GetTempRange(Parse *pParse, int nReg){ return i; } SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse *pParse, int iReg, int nReg){ + if( nReg==1 ){ + sqlite3ReleaseTempReg(pParse, iReg); + return; + } sqlite3ExprCacheRemove(pParse, iReg, nReg); if( nReg>pParse->nRangeReg ){ pParse->nRangeReg = nReg; @@ -80716,6 +95607,29 @@ SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){ pParse->nRangeReg = 0; } +/* +** Validate that no temporary register falls within the range of +** iFirst..iLast, inclusive. This routine is only call from within assert() +** statements. +*/ +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse *pParse, int iFirst, int iLast){ + int i; + if( pParse->nRangeReg>0 + && pParse->iRangeReg+pParse->nRangeRegiRangeReg>=iFirst + ){ + return 0; + } + for(i=0; inTempReg; i++){ + if( pParse->aTempReg[i]>=iFirst && pParse->aTempReg[i]<=iLast ){ + return 0; + } + } + return 1; +} +#endif /* SQLITE_DEBUG */ + /************** End of expr.c ************************************************/ /************** Begin file alter.c *******************************************/ /* @@ -80732,6 +95646,7 @@ SQLITE_PRIVATE void sqlite3ClearTempRegCache(Parse *pParse){ ** This file contains C code routines that used to generate VDBE code ** that implements the ALTER TABLE command. */ +/* #include "sqliteInt.h" */ /* ** The code in this file only exists if we are not omitting the @@ -80796,8 +95711,8 @@ static void renameTableFunc( assert( len>0 ); } while( token!=TK_LP && token!=TK_USING ); - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", ((u8*)tname.z) - zSql, zSql, - zTableName, tname.z+tname.n); + zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", (int)(((u8*)tname.z) - zSql), + zSql, zTableName, tname.z+tname.n); sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); } } @@ -80835,6 +95750,7 @@ static void renameParentFunc( int token; /* Type of token */ UNUSED_PARAMETER(NotUsed); + if( zInput==0 || zOld==0 ) return; for(z=zInput; *z; z=z+n){ n = sqlite3GetToken(z, &token); if( token==TK_REFERENCES ){ @@ -80844,12 +95760,13 @@ static void renameParentFunc( n = sqlite3GetToken(z, &token); }while( token==TK_SPACE ); + if( token==TK_ILLEGAL ) break; zParent = sqlite3DbStrNDup(db, (const char *)z, n); if( zParent==0 ) break; sqlite3Dequote(zParent); if( 0==sqlite3StrICmp((const char *)zOld, zParent) ){ char *zOut = sqlite3MPrintf(db, "%s%.*s\"%w\"", - (zOutput?zOutput:""), z-zInput, zInput, (const char *)zNew + (zOutput?zOutput:""), (int)(z-zInput), zInput, (const char *)zNew ); sqlite3DbFree(db, zOutput); zOutput = zOut; @@ -80892,8 +95809,8 @@ static void renameTriggerFunc( UNUSED_PARAMETER(NotUsed); /* The principle used to locate the table name in the CREATE TRIGGER - ** statement is that the table name is the first token that is immediatedly - ** preceded by either TK_ON or TK_DOT and immediatedly followed by one + ** statement is that the table name is the first token that is immediately + ** preceded by either TK_ON or TK_DOT and immediately followed by one ** of TK_WHEN, TK_BEGIN or TK_FOR. */ if( zSql ){ @@ -80935,8 +95852,8 @@ static void renameTriggerFunc( /* Variable tname now contains the token that is the old table-name ** in the CREATE TRIGGER statement. */ - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", ((u8*)tname.z) - zSql, zSql, - zTableName, tname.z+tname.n); + zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", (int)(((u8*)tname.z) - zSql), + zSql, zTableName, tname.z+tname.n); sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); } } @@ -80946,7 +95863,7 @@ static void renameTriggerFunc( ** Register built-in functions used to help implement ALTER TABLE */ SQLITE_PRIVATE void sqlite3AlterFunctions(void){ - static SQLITE_WSD FuncDef aAlterTableFuncs[] = { + static FuncDef aAlterTableFuncs[] = { FUNCTION(sqlite_rename_table, 2, 0, 0, renameTableFunc), #ifndef SQLITE_OMIT_TRIGGER FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc), @@ -80955,13 +95872,7 @@ SQLITE_PRIVATE void sqlite3AlterFunctions(void){ FUNCTION(sqlite_rename_parent, 3, 0, 0, renameParentFunc), #endif }; - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aAlterTableFuncs); - - for(i=0; ia[0]); if( !pTab ) goto exit_rename_table; iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - zDb = db->aDb[iDb].zName; + zDb = db->aDb[iDb].zDbSName; db->flags |= SQLITE_PreferBuiltin; /* Get a NULL terminated version of the new table name. */ @@ -81188,7 +96099,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( } #endif - /* Begin a transaction and code the VerifyCookie for database iDb. + /* Begin a transaction for database iDb. ** Then modify the schema cookie (since the ALTER TABLE modifies the ** schema). Open a statement transaction if the table is a virtual ** table. @@ -81208,7 +96119,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( #ifndef SQLITE_OMIT_VIRTUALTABLE if( pVTab ){ int i = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, i, 0, zName, 0); + sqlite3VdbeLoadString(v, i, zName); sqlite3VdbeAddOp4(v, OP_VRename, i, 0, 0,(const char*)pVTab, P4_VTAB); sqlite3MayAbort(pParse); } @@ -81227,7 +96138,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( sqlite3NestedParse(pParse, "UPDATE \"%w\".%s SET " "sql = sqlite_rename_parent(sql, %Q, %Q) " - "WHERE %s;", zDb, SCHEMA_TABLE(iDb), zTabName, zName, zWhere); + "WHERE %s;", zDb, MASTER_NAME, zTabName, zName, zWhere); sqlite3DbFree(db, zWhere); } } @@ -81251,7 +96162,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable( "ELSE name END " "WHERE tbl_name=%Q COLLATE nocase AND " "(type='table' OR type='index' OR type='trigger');", - zDb, SCHEMA_TABLE(iDb), zName, zName, zName, + zDb, MASTER_NAME, zName, zName, zName, #ifndef SQLITE_OMIT_TRIGGER zName, #endif @@ -81305,32 +96216,6 @@ exit_rename_table: db->flags = savedDbFlags; } - -/* -** Generate code to make sure the file format number is at least minFormat. -** The generated code will increase the file format number if necessary. -*/ -SQLITE_PRIVATE void sqlite3MinimumFileFormat(Parse *pParse, int iDb, int minFormat){ - Vdbe *v; - v = sqlite3GetVdbe(pParse); - /* The VDBE should have been allocated before this routine is called. - ** If that allocation failed, we would have quit before reaching this - ** point */ - if( ALWAYS(v) ){ - int r1 = sqlite3GetTempReg(pParse); - int r2 = sqlite3GetTempReg(pParse); - int j1; - sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); - sqlite3VdbeUsesBtree(v, iDb); - sqlite3VdbeAddOp2(v, OP_Integer, minFormat, r2); - j1 = sqlite3VdbeAddOp3(v, OP_Ge, r2, 0, r1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, r2); - sqlite3VdbeJumpHere(v, j1); - sqlite3ReleaseTempReg(pParse, r1); - sqlite3ReleaseTempReg(pParse, r2); - } -} - /* ** This function is called after an "ALTER TABLE ... ADD" statement ** has been parsed. Argument pColDef contains the text of the new @@ -81349,15 +96234,18 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ Column *pCol; /* The new column */ Expr *pDflt; /* Default value for the new column */ sqlite3 *db; /* The database connection; */ + Vdbe *v = pParse->pVdbe; /* The prepared statement under construction */ + int r1; /* Temporary registers */ db = pParse->db; if( pParse->nErr || db->mallocFailed ) return; + assert( v!=0 ); pNew = pParse->pNewTable; assert( pNew ); assert( sqlite3BtreeHoldsAllMutexes(db) ); iDb = sqlite3SchemaToIndex(db, pNew->pSchema); - zDb = db->aDb[iDb].zName; + zDb = db->aDb[iDb].zDbSName; zTab = &pNew->zName[16]; /* Skip the "sqlite_altertab_" prefix on the name */ pCol = &pNew->aCol[pNew->nCol-1]; pDflt = pCol->pDflt; @@ -81375,7 +96263,8 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ ** literal NULL, then set pDflt to 0. This simplifies checking ** for an SQL NULL default below. */ - if( pDflt && pDflt->op==TK_NULL ){ + assert( pDflt==0 || pDflt->op==TK_SPAN ); + if( pDflt && pDflt->pLeft->op==TK_NULL ){ pDflt = 0; } @@ -81407,8 +96296,11 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ */ if( pDflt ){ sqlite3_value *pVal = 0; - if( sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal) ){ - db->mallocFailed = 1; + int rc; + rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal); + assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); + if( rc!=SQLITE_OK ){ + assert( db->mallocFailed == 1 ); return; } if( !pVal ){ @@ -81431,18 +96323,25 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ "UPDATE \"%w\".%s SET " "sql = substr(sql,1,%d) || ', ' || %Q || substr(sql,%d) " "WHERE type = 'table' AND name = %Q", - zDb, SCHEMA_TABLE(iDb), pNew->addColOffset, zCol, pNew->addColOffset+1, + zDb, MASTER_NAME, pNew->addColOffset, zCol, pNew->addColOffset+1, zTab ); sqlite3DbFree(db, zCol); db->flags = savedDbFlags; } - /* If the default value of the new column is NULL, then set the file - ** format to 2. If the default value of the new column is not NULL, - ** the file format becomes 3. + /* Make sure the schema version is at least 3. But do not upgrade + ** from less than 3 to 4, as that will corrupt any preexisting DESC + ** index. */ - sqlite3MinimumFileFormat(pParse, iDb, pDflt ? 3 : 2); + r1 = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); + sqlite3VdbeUsesBtree(v, iDb); + sqlite3VdbeAddOp2(v, OP_AddImm, r1, -2); + sqlite3VdbeAddOp2(v, OP_IfPos, r1, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, 3); + sqlite3ReleaseTempReg(pParse, r1); /* Reload the schema of the modified table. */ reloadTableSchema(pParse, pTab, pTab->zName); @@ -81508,7 +96407,7 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ pNew = (Table*)sqlite3DbMallocZero(db, sizeof(Table)); if( !pNew ) goto exit_begin_add_column; pParse->pNewTable = pNew; - pNew->nRef = 1; + pNew->nTabRef = 1; pNew->nCol = pTab->nCol; assert( pNew->nCol>0 ); nAlloc = (((pNew->nCol-1)/8)*8)+8; @@ -81516,7 +96415,7 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ pNew->aCol = (Column*)sqlite3DbMallocZero(db, sizeof(Column)*nAlloc); pNew->zName = sqlite3MPrintf(db, "sqlite_altertab_%s", pTab->zName); if( !pNew->aCol || !pNew->zName ){ - db->mallocFailed = 1; + assert( db->mallocFailed ); goto exit_begin_add_column; } memcpy(pNew->aCol, pTab->aCol, sizeof(Column)*pNew->nCol); @@ -81524,13 +96423,11 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ Column *pCol = &pNew->aCol[i]; pCol->zName = sqlite3DbStrDup(db, pCol->zName); pCol->zColl = 0; - pCol->zType = 0; pCol->pDflt = 0; - pCol->zDflt = 0; } pNew->pSchema = db->aDb[iDb].pSchema; pNew->addColOffset = pTab->addColOffset; - pNew->nRef = 1; + pNew->nTabRef = 1; /* Begin a transaction and increment the schema cookie. */ sqlite3BeginWriteOperation(pParse, 0, iDb); @@ -81583,7 +96480,7 @@ exit_begin_add_column: ** not possible to enable both STAT3 and STAT4 at the same time. If they ** are both enabled, then STAT4 takes precedence. ** -** For most applications, sqlite_stat1 provides all the statisics required +** For most applications, sqlite_stat1 provides all the statistics required ** for the query planner to make good choices. ** ** Format of sqlite_stat1: @@ -81688,6 +96585,7 @@ exit_begin_add_column: ** integer in the equivalent columns in sqlite_stat4. */ #ifndef SQLITE_OMIT_ANALYZE +/* #include "sqliteInt.h" */ #if defined(SQLITE_ENABLE_STAT4) # define IsStat4 1 @@ -81757,14 +96655,14 @@ static void openStatTable( for(i=0; izName))==0 ){ + if( (pStat = sqlite3FindTable(db, zTab, pDb->zDbSName))==0 ){ if( aTable[i].zCols ){ /* The sqlite_statN table does not exist. Create it. Note that a ** side-effect of the CREATE TABLE statement is to leave the rootpage ** of the new table in register pParse->regRoot. This is important ** because the OpenWrite opcode below will be needing it. */ sqlite3NestedParse(pParse, - "CREATE TABLE %Q.%s(%s)", pDb->zName, zTab, aTable[i].zCols + "CREATE TABLE %Q.%s(%s)", pDb->zDbSName, zTab, aTable[i].zCols ); aRoot[i] = pParse->regRoot; aCreateTbl[i] = OPFLAG_P2ISREG; @@ -81779,7 +96677,7 @@ static void openStatTable( if( zWhere ){ sqlite3NestedParse(pParse, "DELETE FROM %Q.%s WHERE %s=%Q", - pDb->zName, zTab, zWhereType, zWhere + pDb->zDbSName, zTab, zWhereType, zWhere ); }else{ /* The sqlite_stat[134] table already exists. Delete all rows. */ @@ -81793,6 +96691,7 @@ static void openStatTable( assert( inRowid ) sqlite3DbFree(db, p->u.aRowid); - p->u.aRowid = sqlite3DbMallocRaw(db, n); + p->u.aRowid = sqlite3DbMallocRawNN(db, n); if( p->u.aRowid ){ p->nRowid = n; memcpy(p->u.aRowid, pData, n); @@ -81914,13 +96814,27 @@ static void stat4Destructor(void *pOld){ } /* -** Implementation of the stat_init(N,C) SQL function. The two parameters -** are the number of rows in the table or index (C) and the number of columns -** in the index (N). The second argument (C) is only used for STAT3 and STAT4. +** Implementation of the stat_init(N,K,C) SQL function. The three parameters +** are: +** N: The number of columns in the index including the rowid/pk (note 1) +** K: The number of columns in the index excluding the rowid/pk. +** C: The number of rows in the index (note 2) +** +** Note 1: In the special case of the covering index that implements a +** WITHOUT ROWID table, N is the number of PRIMARY KEY columns, not the +** total number of columns in the table. +** +** Note 2: C is only used for STAT3 and STAT4. +** +** For indexes on ordinary rowid tables, N==K+1. But for indexes on +** WITHOUT ROWID tables, N=K+P where P is the number of columns in the +** PRIMARY KEY of the table. The covering index that implements the +** original WITHOUT ROWID table as N==K as a special case. ** ** This routine allocates the Stat4Accum object in heap memory. The return -** value is a pointer to the the Stat4Accum object encoded as a blob (i.e. -** the size of the blob is sizeof(void*) bytes). +** value is a pointer to the Stat4Accum object. The datatype of the +** return value is BLOB, but it is really just a pointer to the Stat4Accum +** object. */ static void statInit( sqlite3_context *context, @@ -81929,6 +96843,7 @@ static void statInit( ){ Stat4Accum *p; int nCol; /* Number of columns in index being sampled */ + int nKeyCol; /* Number of key columns */ int nColUp; /* nCol rounded up for alignment */ int n; /* Bytes of space to allocate */ sqlite3 *db; /* Database connection */ @@ -81939,8 +96854,11 @@ static void statInit( /* Decode the three function arguments */ UNUSED_PARAMETER(argc); nCol = sqlite3_value_int(argv[0]); - assert( nCol>1 ); /* >1 because it includes the rowid column */ + assert( nCol>0 ); nColUp = sizeof(tRowcnt)<8 ? (nCol+1)&~1 : nCol; + nKeyCol = sqlite3_value_int(argv[1]); + assert( nKeyCol<=nCol ); + assert( nKeyCol>0 ); /* Allocate the space required for the Stat4Accum object */ n = sizeof(*p) @@ -81962,6 +96880,7 @@ static void statInit( p->db = db; p->nRow = 0; p->nCol = nCol; + p->nKeyCol = nKeyCol; p->current.anDLt = (tRowcnt*)&p[1]; p->current.anEq = &p->current.anDLt[nColUp]; @@ -81972,9 +96891,9 @@ static void statInit( p->iGet = -1; p->mxSample = mxSample; - p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[1])/(mxSample/3+1) + 1); + p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[2])/(mxSample/3+1) + 1); p->current.anLt = &p->current.anEq[nColUp]; - p->iPrn = nCol*0x689e962d ^ sqlite3_value_int(argv[1])*0xd0944565; + p->iPrn = 0x689e962d*(u32)nCol ^ 0xd0944565*(u32)sqlite3_value_int(argv[2]); /* Set up the Stat4Accum.a[] and aBest[] arrays */ p->a = (struct Stat4Sample*)&p->current.anLt[nColUp]; @@ -81993,20 +96912,21 @@ static void statInit( } #endif - /* Return a pointer to the allocated object to the caller */ - sqlite3_result_blob(context, p, sizeof(p), stat4Destructor); + /* Return a pointer to the allocated object to the caller. Note that + ** only the pointer (the 2nd parameter) matters. The size of the object + ** (given by the 3rd parameter) is never used and can be any positive + ** value. */ + sqlite3_result_blob(context, p, sizeof(*p), stat4Destructor); } static const FuncDef statInitFuncdef = { - 1+IsStat34, /* nArg */ + 2+IsStat34, /* nArg */ SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ - statInit, /* xFunc */ - 0, /* xStep */ + statInit, /* xSFunc */ 0, /* xFinalize */ "stat_init", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ + {0} }; #ifdef SQLITE_ENABLE_STAT4 @@ -82221,7 +97141,10 @@ static void samplePushPrevious(Stat4Accum *p, int iChng){ ** R Rowid for the current row. Might be a key record for ** WITHOUT ROWID tables. ** -** The SQL function always returns NULL. +** This SQL function always returns NULL. It's purpose it to accumulate +** statistical data and/or samples in the Stat4Accum object about the +** index being analyzed. The stat_get() SQL function will later be used to +** extract relevant information for constructing the sqlite_statN tables. ** ** The R parameter is only used for STAT3 and STAT4 */ @@ -82238,7 +97161,7 @@ static void statPush( UNUSED_PARAMETER( argc ); UNUSED_PARAMETER( context ); - assert( p->nCol>1 ); /* Includes rowid field */ + assert( p->nCol>0 ); assert( iChngnCol ); if( p->nRow==0 ){ @@ -82299,12 +97222,10 @@ static const FuncDef statPushFuncdef = { SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ - statPush, /* xFunc */ - 0, /* xStep */ + statPush, /* xSFunc */ 0, /* xFinalize */ "stat_push", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ + {0} }; #define STAT_GET_STAT1 0 /* "stat" column of stat1 table */ @@ -82315,9 +97236,18 @@ static const FuncDef statPushFuncdef = { /* ** Implementation of the stat_get(P,J) SQL function. This routine is -** used to query the results. Content is returned for parameter J +** used to query statistical information that has been gathered into +** the Stat4Accum object by prior calls to stat_push(). The P parameter +** has type BLOB but it is really just a pointer to the Stat4Accum object. +** The content to returned is determined by the parameter J ** which is one of the STAT_GET_xxxx values defined above. ** +** The stat_get(P,J) function is not available to generic SQL. It is +** inserted as part of a manually constructed bytecode program. (See +** the callStatGet() routine below.) It is guaranteed that the P +** parameter will always be a poiner to a Stat4Accum object, never a +** NULL. +** ** If neither STAT3 nor STAT4 are enabled, then J is always ** STAT_GET_STAT1 and is hence omitted and this routine becomes ** a one-parameter function, stat_get(P), that always returns the @@ -82366,7 +97296,7 @@ static void statGet( char *z; int i; - char *zRet = sqlite3MallocZero(p->nCol * 25); + char *zRet = sqlite3MallocZero( (p->nKeyCol+1)*25 ); if( zRet==0 ){ sqlite3_result_error_nomem(context); return; @@ -82374,7 +97304,7 @@ static void statGet( sqlite3_snprintf(24, zRet, "%llu", (u64)p->nRow); z = zRet + sqlite3Strlen30(zRet); - for(i=0; i<(p->nCol-1); i++){ + for(i=0; inKeyCol; i++){ u64 nDistinct = p->current.anDLt[i] + 1; u64 iVal = (p->nRow + nDistinct - 1) / nDistinct; sqlite3_snprintf(24, z, " %llu", iVal); @@ -82443,12 +97373,10 @@ static const FuncDef statGetFuncdef = { SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ - statGet, /* xFunc */ - 0, /* xStep */ + statGet, /* xSFunc */ 0, /* xFinalize */ "stat_get", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ + {0} }; static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){ @@ -82460,8 +97388,8 @@ static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){ #else UNUSED_PARAMETER( iParam ); #endif - sqlite3VdbeAddOp3(v, OP_Function, 0, regStat4, regOut); - sqlite3VdbeChangeP4(v, -1, (char*)&statGetFuncdef, P4_FUNCDEF); + sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4, regOut, + (char*)&statGetFuncdef, P4_FUNCDEF); sqlite3VdbeChangeP5(v, 1 + IsStat34); } @@ -82507,7 +97435,7 @@ static void analyzeOneTable( /* Do not gather statistics on views or virtual tables */ return; } - if( sqlite3_strnicmp(pTab->zName, "sqlite_", 7)==0 ){ + if( sqlite3_strlike("sqlite_%", pTab->zName, 0)==0 ){ /* Do not gather statistics on system tables */ return; } @@ -82517,7 +97445,7 @@ static void analyzeOneTable( assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); #ifndef SQLITE_OMIT_AUTHORIZATION if( sqlite3AuthCheck(pParse, SQLITE_ANALYZE, pTab->zName, 0, - db->aDb[iDb].zName ) ){ + db->aDb[iDb].zDbSName ) ){ return; } #endif @@ -82531,30 +97459,30 @@ static void analyzeOneTable( iIdxCur = iTab++; pParse->nTab = MAX(pParse->nTab, iTab); sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp4(v, OP_String8, 0, regTabname, 0, pTab->zName, 0); + sqlite3VdbeLoadString(v, regTabname, pTab->zName); for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - int nCol; /* Number of columns indexed by pIdx */ - int *aGotoChng; /* Array of jump instruction addresses */ + int nCol; /* Number of columns in pIdx. "N" */ int addrRewind; /* Address of "OP_Rewind iIdxCur" */ - int addrGotoChng0; /* Address of "Goto addr_chng_0" */ int addrNextRow; /* Address of "next_row:" */ const char *zIdxName; /* Name of the index */ + int nColTest; /* Number of columns to test for changes */ if( pOnlyIdx && pOnlyIdx!=pIdx ) continue; if( pIdx->pPartIdxWhere==0 ) needTableCnt = 0; - VdbeNoopComment((v, "Begin analysis of %s", pIdx->zName)); - nCol = pIdx->nKeyCol; - aGotoChng = sqlite3DbMallocRaw(db, sizeof(int)*(nCol+1)); - if( aGotoChng==0 ) continue; + if( !HasRowid(pTab) && IsPrimaryKeyIndex(pIdx) ){ + nCol = pIdx->nKeyCol; + zIdxName = pTab->zName; + nColTest = nCol - 1; + }else{ + nCol = pIdx->nColumn; + zIdxName = pIdx->zName; + nColTest = pIdx->uniqNotNull ? pIdx->nKeyCol-1 : nCol-1; + } /* Populate the register containing the index name. */ - if( pIdx->autoIndex==2 && !HasRowid(pTab) ){ - zIdxName = pTab->zName; - }else{ - zIdxName = pIdx->zName; - } - sqlite3VdbeAddOp4(v, OP_String8, 0, regIdxname, 0, zIdxName, 0); + sqlite3VdbeLoadString(v, regIdxname, zIdxName); + VdbeComment((v, "Analysis for %s.%s", pTab->zName, zIdxName)); /* ** Pseudo-code for loop that calls stat_push(): @@ -82579,7 +97507,7 @@ static void analyzeOneTable( ** regPrev(1) = idx(1) ** ... ** - ** chng_addr_N: + ** endDistinctTest: ** regRowid = idx(rowid) ** stat_push(P, regChng, regRowid) ** Next csr @@ -82592,7 +97520,7 @@ static void analyzeOneTable( ** the regPrev array and a trailing rowid (the rowid slot is required ** when building a record to insert into the sample column of ** the sqlite_stat4 table. */ - pParse->nMem = MAX(pParse->nMem, regPrev+nCol); + pParse->nMem = MAX(pParse->nMem, regPrev+nColTest); /* Open a read-only cursor on the index being analyzed. */ assert( iDb==sqlite3SchemaToIndex(db, pIdx->pSchema) ); @@ -82602,18 +97530,22 @@ static void analyzeOneTable( /* Invoke the stat_init() function. The arguments are: ** - ** (1) the number of columns in the index including the rowid, - ** (2) the number of rows in the index, + ** (1) the number of columns in the index including the rowid + ** (or for a WITHOUT ROWID table, the number of PK columns), + ** (2) the number of columns in the key without the rowid/pk + ** (3) the number of rows in the index, ** - ** The second argument is only used for STAT3 and STAT4 + ** + ** The third argument is only used for STAT3 and STAT4 */ #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat4+2); + sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat4+3); #endif - sqlite3VdbeAddOp2(v, OP_Integer, nCol+1, regStat4+1); - sqlite3VdbeAddOp3(v, OP_Function, 0, regStat4+1, regStat4); - sqlite3VdbeChangeP4(v, -1, (char*)&statInitFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 1+IsStat34); + sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat4+1); + sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regStat4+2); + sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4+1, regStat4, + (char*)&statInitFuncdef, P4_FUNCDEF); + sqlite3VdbeChangeP5(v, 2+IsStat34); /* Implementation of the following: ** @@ -82624,44 +97556,64 @@ static void analyzeOneTable( ** */ addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur); + VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Integer, 0, regChng); - addrGotoChng0 = sqlite3VdbeAddOp0(v, OP_Goto); - - /* - ** next_row: - ** regChng = 0 - ** if( idx(0) != regPrev(0) ) goto chng_addr_0 - ** regChng = 1 - ** if( idx(1) != regPrev(1) ) goto chng_addr_1 - ** ... - ** regChng = N - ** goto chng_addr_N - */ addrNextRow = sqlite3VdbeCurrentAddr(v); - for(i=0; iazColl[i]); - sqlite3VdbeAddOp2(v, OP_Integer, i, regChng); - sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regTemp); - aGotoChng[i] = - sqlite3VdbeAddOp4(v, OP_Ne, regTemp, 0, regPrev+i, pColl, P4_COLLSEQ); - sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); - } - sqlite3VdbeAddOp2(v, OP_Integer, nCol, regChng); - aGotoChng[nCol] = sqlite3VdbeAddOp0(v, OP_Goto); - /* - ** chng_addr_0: - ** regPrev(0) = idx(0) - ** chng_addr_1: - ** regPrev(1) = idx(1) - ** ... - */ - sqlite3VdbeJumpHere(v, addrGotoChng0); - for(i=0; i0 ){ + int endDistinctTest = sqlite3VdbeMakeLabel(v); + int *aGotoChng; /* Array of jump instruction addresses */ + aGotoChng = sqlite3DbMallocRawNN(db, sizeof(int)*nColTest); + if( aGotoChng==0 ) continue; + /* + ** next_row: + ** regChng = 0 + ** if( idx(0) != regPrev(0) ) goto chng_addr_0 + ** regChng = 1 + ** if( idx(1) != regPrev(1) ) goto chng_addr_1 + ** ... + ** regChng = N + ** goto endDistinctTest + */ + sqlite3VdbeAddOp0(v, OP_Goto); + addrNextRow = sqlite3VdbeCurrentAddr(v); + if( nColTest==1 && pIdx->nKeyCol==1 && IsUniqueIndex(pIdx) ){ + /* For a single-column UNIQUE index, once we have found a non-NULL + ** row, we know that all the rest will be distinct, so skip + ** subsequent distinctness tests. */ + sqlite3VdbeAddOp2(v, OP_NotNull, regPrev, endDistinctTest); + VdbeCoverage(v); + } + for(i=0; iazColl[i]); + sqlite3VdbeAddOp2(v, OP_Integer, i, regChng); + sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regTemp); + aGotoChng[i] = + sqlite3VdbeAddOp4(v, OP_Ne, regTemp, 0, regPrev+i, pColl, P4_COLLSEQ); + sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); + VdbeCoverage(v); + } + sqlite3VdbeAddOp2(v, OP_Integer, nColTest, regChng); + sqlite3VdbeGoto(v, endDistinctTest); + + + /* + ** chng_addr_0: + ** regPrev(0) = idx(0) + ** chng_addr_1: + ** regPrev(1) = idx(1) + ** ... + */ + sqlite3VdbeJumpHere(v, addrNextRow-1); + for(i=0; inKeyCol); for(j=0; jnKeyCol; j++){ k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); + assert( k>=0 && knCol ); sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j); VdbeComment((v, "%s", pTab->aCol[pPk->aiColumn[j]].zName)); } @@ -82688,14 +97640,15 @@ static void analyzeOneTable( } #endif assert( regChng==(regStat4+1) ); - sqlite3VdbeAddOp3(v, OP_Function, 1, regStat4, regTemp); - sqlite3VdbeChangeP4(v, -1, (char*)&statPushFuncdef, P4_FUNCDEF); + sqlite3VdbeAddOp4(v, OP_Function0, 1, regStat4, regTemp, + (char*)&statPushFuncdef, P4_FUNCDEF); sqlite3VdbeChangeP5(v, 2+IsStat34); - sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); + sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v); /* Add the entry to the stat1 table. */ callStatGet(v, regStat4, STAT_GET_STAT1, regStat1); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "aaa", 0); + assert( "BBB"[0]==SQLITE_AFF_TEXT ); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0); sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid); sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regTemp, regNewRowid); sqlite3VdbeChangeP5(v, OPFLAG_APPEND); @@ -82713,36 +97666,38 @@ static void analyzeOneTable( int addrIsNull; u8 seekOp = HasRowid(pTab) ? OP_NotExists : OP_NotFound; - pParse->nMem = MAX(pParse->nMem, regCol+nCol+1); + pParse->nMem = MAX(pParse->nMem, regCol+nCol); addrNext = sqlite3VdbeCurrentAddr(v); callStatGet(v, regStat4, STAT_GET_ROWID, regSampleRowid); addrIsNull = sqlite3VdbeAddOp1(v, OP_IsNull, regSampleRowid); + VdbeCoverage(v); callStatGet(v, regStat4, STAT_GET_NEQ, regEq); callStatGet(v, regStat4, STAT_GET_NLT, regLt); callStatGet(v, regStat4, STAT_GET_NDLT, regDLt); sqlite3VdbeAddOp4Int(v, seekOp, iTabCur, addrNext, regSampleRowid, 0); + /* We know that the regSampleRowid row exists because it was read by + ** the previous loop. Thus the not-found jump of seekOp will never + ** be taken */ + VdbeCoverageNeverTaken(v); #ifdef SQLITE_ENABLE_STAT3 - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, - pIdx->aiColumn[0], regSample); + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, 0, regSample); #else for(i=0; iaiColumn[i]; - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, iCol, regCol+i); + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, i, regCol+i); } - sqlite3VdbeAddOp3(v, OP_MakeRecord, regCol, nCol+1, regSample); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regCol, nCol, regSample); #endif - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 6, regTemp, "bbbbbb", 0); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regTabname, 6, regTemp); sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regNewRowid); sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regTemp, regNewRowid); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrNext); + sqlite3VdbeAddOp2(v, OP_Goto, 1, addrNext); /* P1==1 for end-of-loop */ sqlite3VdbeJumpHere(v, addrIsNull); } #endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ /* End of analysis */ sqlite3VdbeJumpHere(v, addrRewind); - sqlite3DbFree(db, aGotoChng); } @@ -82752,9 +97707,10 @@ static void analyzeOneTable( if( pOnlyIdx==0 && needTableCnt ){ VdbeComment((v, "%s", pTab->zName)); sqlite3VdbeAddOp2(v, OP_Count, iTabCur, regStat1); - jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, regStat1); + jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, regStat1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Null, 0, regIdxname); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "aaa", 0); + assert( "BBB"[0]==SQLITE_AFF_TEXT ); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0); sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid); sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regTemp, regNewRowid); sqlite3VdbeChangeP5(v, OPFLAG_APPEND); @@ -82843,6 +97799,7 @@ SQLITE_PRIVATE void sqlite3Analyze(Parse *pParse, Token *pName1, Token *pName2){ Table *pTab; Index *pIdx; Token *pTableName; + Vdbe *v; /* Read the database schema. If an error occurs, leave an error message ** and code in pParse and return NULL. */ @@ -82878,7 +97835,7 @@ SQLITE_PRIVATE void sqlite3Analyze(Parse *pParse, Token *pName1, Token *pName2){ /* Form 3: Analyze the fully qualified table name */ iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pTableName); if( iDb>=0 ){ - zDb = db->aDb[iDb].zName; + zDb = db->aDb[iDb].zDbSName; z = sqlite3NameFromToken(db, pTableName); if( z ){ if( (pIdx = sqlite3FindIndex(db, z, zDb))!=0 ){ @@ -82890,6 +97847,8 @@ SQLITE_PRIVATE void sqlite3Analyze(Parse *pParse, Token *pName1, Token *pName2){ } } } + v = sqlite3GetVdbe(pParse); + if( v ) sqlite3VdbeAddOp0(v, OP_Expire); } /* @@ -82911,6 +97870,7 @@ static void decodeIntArray( char *zIntArray, /* String containing int array to decode */ int nOut, /* Number of slots in aOut[] */ tRowcnt *aOut, /* Store integers here */ + LogEst *aLog, /* Or, if aOut==0, here */ Index *pIndex /* Handle extra flags for this index, if not NULL */ ){ char *z = zIntArray; @@ -82921,7 +97881,7 @@ static void decodeIntArray( #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 if( z==0 ) z = ""; #else - if( NEVER(z==0) ) z = ""; + assert( z!=0 ); #endif for(i=0; *z && ibUnordered = 1; - }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){ - int v32 = 0; - sqlite3GetInt32(z+3, &v32); - pIndex->szIdxRow = sqlite3LogEst(v32); + pIndex->bUnordered = 0; + pIndex->noSkipScan = 0; + while( z[0] ){ + if( sqlite3_strglob("unordered*", z)==0 ){ + pIndex->bUnordered = 1; + }else if( sqlite3_strglob("sz=[0-9]*", z)==0 ){ + pIndex->szIdxRow = sqlite3LogEst(sqlite3Atoi(z+3)); + }else if( sqlite3_strglob("noskipscan*", z)==0 ){ + pIndex->noSkipScan = 1; + } +#ifdef SQLITE_ENABLE_COSTMULT + else if( sqlite3_strglob("costmult=[0-9]*",z)==0 ){ + pIndex->pTable->costMult = sqlite3LogEst(sqlite3Atoi(z+9)); + } +#endif + while( z[0]!=0 && z[0]!=' ' ) z++; + while( z[0]==' ' ) z++; } } } @@ -82985,12 +97963,28 @@ static int analysisLoader(void *pData, int argc, char **argv, char **NotUsed){ z = argv[2]; if( pIndex ){ - decodeIntArray((char*)z, pIndex->nKeyCol+1, pIndex->aiRowEst, pIndex); - if( pIndex->pPartIdxWhere==0 ) pTable->nRowEst = pIndex->aiRowEst[0]; + tRowcnt *aiRowEst = 0; + int nCol = pIndex->nKeyCol+1; +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + /* Index.aiRowEst may already be set here if there are duplicate + ** sqlite_stat1 entries for this index. In that case just clobber + ** the old data with the new instead of allocating a new array. */ + if( pIndex->aiRowEst==0 ){ + pIndex->aiRowEst = (tRowcnt*)sqlite3MallocZero(sizeof(tRowcnt) * nCol); + if( pIndex->aiRowEst==0 ) sqlite3OomFault(pInfo->db); + } + aiRowEst = pIndex->aiRowEst; +#endif + pIndex->bUnordered = 0; + decodeIntArray((char*)z, nCol, aiRowEst, pIndex->aiRowLogEst, pIndex); + if( pIndex->pPartIdxWhere==0 ) pTable->nRowLogEst = pIndex->aiRowLogEst[0]; }else{ Index fakeIdx; fakeIdx.szIdxRow = pTable->szTabRow; - decodeIntArray((char*)z, 1, &pTable->nRowEst, &fakeIdx); +#ifdef SQLITE_ENABLE_COSTMULT + fakeIdx.pTable = pTable; +#endif + decodeIntArray((char*)z, 1, 0, &pTable->nRowLogEst, &fakeIdx); pTable->szTabRow = fakeIdx.szIdxRow; } @@ -83031,30 +98025,52 @@ static void initAvgEq(Index *pIdx){ IndexSample *aSample = pIdx->aSample; IndexSample *pFinal = &aSample[pIdx->nSample-1]; int iCol; - for(iCol=0; iColnKeyCol; iCol++){ + int nCol = 1; + if( pIdx->nSampleCol>1 ){ + /* If this is stat4 data, then calculate aAvgEq[] values for all + ** sample columns except the last. The last is always set to 1, as + ** once the trailing PK fields are considered all index keys are + ** unique. */ + nCol = pIdx->nSampleCol-1; + pIdx->aAvgEq[nCol] = 1; + } + for(iCol=0; iColnSample; int i; /* Used to iterate through samples */ tRowcnt sumEq = 0; /* Sum of the nEq values */ - tRowcnt nSum = 0; /* Number of terms contributing to sumEq */ tRowcnt avgEq = 0; - tRowcnt nDLt = pFinal->anDLt[iCol]; + tRowcnt nRow; /* Number of rows in index */ + i64 nSum100 = 0; /* Number of terms contributing to sumEq */ + i64 nDist100; /* Number of distinct values in index */ + + if( !pIdx->aiRowEst || iCol>=pIdx->nKeyCol || pIdx->aiRowEst[iCol+1]==0 ){ + nRow = pFinal->anLt[iCol]; + nDist100 = (i64)100 * pFinal->anDLt[iCol]; + nSample--; + }else{ + nRow = pIdx->aiRowEst[0]; + nDist100 = ((i64)100 * pIdx->aiRowEst[0]) / pIdx->aiRowEst[iCol+1]; + } + pIdx->nRowEst0 = nRow; /* Set nSum to the number of distinct (iCol+1) field prefixes that - ** occur in the stat4 table for this index before pFinal. Set - ** sumEq to the sum of the nEq values for column iCol for the same - ** set (adding the value only once where there exist dupicate - ** prefixes). */ - for(i=0; i<(pIdx->nSample-1); i++){ - if( aSample[i].anDLt[iCol]!=aSample[i+1].anDLt[iCol] ){ + ** occur in the stat4 table for this index. Set sumEq to the sum of + ** the nEq values for column iCol for the same set (adding the value + ** only once where there exist duplicate prefixes). */ + for(i=0; inSample-1) + || aSample[i].anDLt[iCol]!=aSample[i+1].anDLt[iCol] + ){ sumEq += aSample[i].anEq[iCol]; - nSum++; + nSum100 += 100; } } - if( nDLt>nSum ){ - avgEq = (pFinal->anLt[iCol] - sumEq)/(nDLt - nSum); + + if( nDist100>nSum100 && sumEqaAvgEq[iCol] = avgEq; - if( pIdx->nSampleCol==1 ) break; } } } @@ -83102,10 +98118,10 @@ static int loadStatTbl( Index *pPrevIdx = 0; /* Previous index in the loop */ IndexSample *pSample; /* A slot in pIdx->aSample[] */ - assert( db->lookaside.bEnabled==0 ); + assert( db->lookaside.bDisable ); zSql = sqlite3MPrintf(db, zSql1, zDb); if( !zSql ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); sqlite3DbFree(db, zSql); @@ -83113,7 +98129,6 @@ static int loadStatTbl( while( sqlite3_step(pStmt)==SQLITE_ROW ){ int nIdxCol = 1; /* Number of columns in stat4 records */ - int nAvgCol = 1; /* Number of entries in Index.aAvgEq */ char *zIndex; /* Index name */ Index *pIdx; /* Pointer to the index object */ @@ -83131,21 +98146,25 @@ static int loadStatTbl( ** loaded from the stat4 table. In this case ignore stat3 data. */ if( pIdx==0 || pIdx->nSample ) continue; if( bStat3==0 ){ - nIdxCol = pIdx->nKeyCol+1; - nAvgCol = pIdx->nKeyCol; + assert( !HasRowid(pIdx->pTable) || pIdx->nColumn==pIdx->nKeyCol+1 ); + if( !HasRowid(pIdx->pTable) && IsPrimaryKeyIndex(pIdx) ){ + nIdxCol = pIdx->nKeyCol; + }else{ + nIdxCol = pIdx->nColumn; + } } pIdx->nSampleCol = nIdxCol; nByte = sizeof(IndexSample) * nSample; nByte += sizeof(tRowcnt) * nIdxCol * 3 * nSample; - nByte += nAvgCol * sizeof(tRowcnt); /* Space for Index.aAvgEq[] */ + nByte += nIdxCol * sizeof(tRowcnt); /* Space for Index.aAvgEq[] */ pIdx->aSample = sqlite3DbMallocZero(db, nByte); if( pIdx->aSample==0 ){ sqlite3_finalize(pStmt); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pSpace = (tRowcnt*)&pIdx->aSample[nSample]; - pIdx->aAvgEq = pSpace; pSpace += nAvgCol; + pIdx->aAvgEq = pSpace; pSpace += nIdxCol; for(i=0; iaSample[i].anEq = pSpace; pSpace += nIdxCol; pIdx->aSample[i].anLt = pSpace; pSpace += nIdxCol; @@ -83158,7 +98177,7 @@ static int loadStatTbl( zSql = sqlite3MPrintf(db, zSql2, zDb); if( !zSql ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); sqlite3DbFree(db, zSql); @@ -83182,9 +98201,9 @@ static int loadStatTbl( pPrevIdx = pIdx; } pSample = &pIdx->aSample[pIdx->nSample]; - decodeIntArray((char*)sqlite3_column_text(pStmt,1), nCol, pSample->anEq, 0); - decodeIntArray((char*)sqlite3_column_text(pStmt,2), nCol, pSample->anLt, 0); - decodeIntArray((char*)sqlite3_column_text(pStmt,3), nCol, pSample->anDLt,0); + decodeIntArray((char*)sqlite3_column_text(pStmt,1),nCol,pSample->anEq,0,0); + decodeIntArray((char*)sqlite3_column_text(pStmt,2),nCol,pSample->anLt,0,0); + decodeIntArray((char*)sqlite3_column_text(pStmt,3),nCol,pSample->anDLt,0,0); /* Take a copy of the sample. Add two 0x00 bytes the end of the buffer. ** This is in case the sample record is corrupted. In that case, the @@ -83196,9 +98215,11 @@ static int loadStatTbl( pSample->p = sqlite3DbMallocZero(db, pSample->n + 2); if( pSample->p==0 ){ sqlite3_finalize(pStmt); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; + } + if( pSample->n ){ + memcpy(pSample->p, sqlite3_column_blob(pStmt, 4), pSample->n); } - memcpy(pSample->p, sqlite3_column_blob(pStmt, 4), pSample->n); pIdx->nSample++; } rc = sqlite3_finalize(pStmt); @@ -83213,7 +98234,7 @@ static int loadStatTbl( static int loadStat4(sqlite3 *db, const char *zDb){ int rc = SQLITE_OK; /* Result codes from subroutines */ - assert( db->lookaside.bEnabled==0 ); + assert( db->lookaside.bDisable ); if( sqlite3FindTable(db, "sqlite_stat4", zDb) ){ rc = loadStatTbl(db, 0, "SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx", @@ -83258,7 +98279,7 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ analysisInfo sInfo; HashElem *i; char *zSql; - int rc; + int rc = SQLITE_OK; assert( iDb>=0 && iDbnDb ); assert( db->aDb[iDb].pBt!=0 ); @@ -83267,43 +98288,50 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){ Index *pIdx = sqliteHashData(i); - sqlite3DefaultRowEst(pIdx); + pIdx->aiRowLogEst[0] = 0; #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 sqlite3DeleteIndexSamples(db, pIdx); pIdx->aSample = 0; #endif } - /* Check to make sure the sqlite_stat1 table exists */ - sInfo.db = db; - sInfo.zDatabase = db->aDb[iDb].zName; - if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)==0 ){ - return SQLITE_ERROR; - } - /* Load new statistics out of the sqlite_stat1 table */ - zSql = sqlite3MPrintf(db, - "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase); - if( zSql==0 ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_exec(db, zSql, analysisLoader, &sInfo, 0); - sqlite3DbFree(db, zSql); + sInfo.db = db; + sInfo.zDatabase = db->aDb[iDb].zDbSName; + if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)!=0 ){ + zSql = sqlite3MPrintf(db, + "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase); + if( zSql==0 ){ + rc = SQLITE_NOMEM_BKPT; + }else{ + rc = sqlite3_exec(db, zSql, analysisLoader, &sInfo, 0); + sqlite3DbFree(db, zSql); + } } + /* Set appropriate defaults on all indexes not in the sqlite_stat1 table */ + assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); + for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){ + Index *pIdx = sqliteHashData(i); + if( pIdx->aiRowLogEst[0]==0 ) sqlite3DefaultRowEst(pIdx); + } /* Load the statistics from the sqlite_stat4 table. */ #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - if( rc==SQLITE_OK ){ - int lookasideEnabled = db->lookaside.bEnabled; - db->lookaside.bEnabled = 0; + if( rc==SQLITE_OK && OptimizationEnabled(db, SQLITE_Stat34) ){ + db->lookaside.bDisable++; rc = loadStat4(db, sInfo.zDatabase); - db->lookaside.bEnabled = lookasideEnabled; + db->lookaside.bDisable--; + } + for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){ + Index *pIdx = sqliteHashData(i); + sqlite3_free(pIdx->aiRowEst); + pIdx->aiRowEst = 0; } #endif if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } return rc; } @@ -83326,6 +98354,7 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ ************************************************************************* ** This file contains code used to implement the ATTACH and DETACH commands. */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_ATTACH /* @@ -83411,7 +98440,7 @@ static void attachFunc( goto attach_error; } for(i=0; inDb; i++){ - char *z = db->aDb[i].zName; + char *z = db->aDb[i].zDbSName; assert( z && zName ); if( sqlite3StrICmp(z, zName)==0 ){ zErrDyn = sqlite3MPrintf(db, "database %s is already in use", zName); @@ -83423,7 +98452,7 @@ static void attachFunc( ** hash tables. */ if( db->aDb==db->aDbStatic ){ - aNew = sqlite3DbMallocRaw(db, sizeof(db->aDb[0])*3 ); + aNew = sqlite3DbMallocRawNN(db, sizeof(db->aDb[0])*3 ); if( aNew==0 ) return; memcpy(aNew, db->aDb, sizeof(db->aDb[0])*2); }else{ @@ -83441,7 +98470,7 @@ static void attachFunc( flags = db->openFlags; rc = sqlite3ParseUri(db->pVfs->zName, zFile, &flags, &pVfs, &zPath, &zErr); if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM ) db->mallocFailed = 1; + if( rc==SQLITE_NOMEM ) sqlite3OomFault(db); sqlite3_result_error(context, zErr, -1); sqlite3_free(zErr); return; @@ -83451,6 +98480,7 @@ static void attachFunc( rc = sqlite3BtreeOpen(pVfs, zPath, db, &aNew->pBt, 0, flags); sqlite3_free( zPath ); db->nDb++; + db->skipBtreeMutex = 0; if( rc==SQLITE_CONSTRAINT ){ rc = SQLITE_ERROR; zErrDyn = sqlite3MPrintf(db, "database is already attached"); @@ -83458,24 +98488,27 @@ static void attachFunc( Pager *pPager; aNew->pSchema = sqlite3SchemaGet(db, aNew->pBt); if( !aNew->pSchema ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else if( aNew->pSchema->file_format && aNew->pSchema->enc!=ENC(db) ){ zErrDyn = sqlite3MPrintf(db, "attached databases must use the same text encoding as main database"); rc = SQLITE_ERROR; } + sqlite3BtreeEnter(aNew->pBt); pPager = sqlite3BtreePager(aNew->pBt); sqlite3PagerLockingMode(pPager, db->dfltLockMode); sqlite3BtreeSecureDelete(aNew->pBt, sqlite3BtreeSecureDelete(db->aDb[0].pBt,-1) ); #ifndef SQLITE_OMIT_PAGER_PRAGMAS - sqlite3BtreeSetPagerFlags(aNew->pBt, 3 | (db->flags & PAGER_FLAGS_MASK)); + sqlite3BtreeSetPagerFlags(aNew->pBt, + PAGER_SYNCHRONOUS_FULL | (db->flags & PAGER_FLAGS_MASK)); #endif + sqlite3BtreeLeave(aNew->pBt); } - aNew->safety_level = 3; - aNew->zName = sqlite3DbStrDup(db, zName); - if( rc==SQLITE_OK && aNew->zName==0 ){ - rc = SQLITE_NOMEM; + aNew->safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1; + aNew->zDbSName = sqlite3DbStrDup(db, zName); + if( rc==SQLITE_OK && aNew->zDbSName==0 ){ + rc = SQLITE_NOMEM_BKPT; } @@ -83503,7 +98536,7 @@ static void attachFunc( case SQLITE_NULL: /* No key specified. Use the key from the main database */ sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey); - if( nKey>0 || sqlite3BtreeGetReserve(db->aDb[0].pBt)>0 ){ + if( nKey || sqlite3BtreeGetOptimalReserve(db->aDb[0].pBt)>0 ){ rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); } break; @@ -83521,6 +98554,15 @@ static void attachFunc( rc = sqlite3Init(db, &zErrDyn); sqlite3BtreeLeaveAll(db); } +#ifdef SQLITE_USER_AUTHENTICATION + if( rc==SQLITE_OK ){ + u8 newAuth = 0; + rc = sqlite3UserAuthCheckLogin(db, zName, &newAuth); + if( newAuthauth.authLevel ){ + rc = SQLITE_AUTH_USER; + } + } +#endif if( rc ){ int iDb = db->nDb - 1; assert( iDb>=2 ); @@ -83532,7 +98574,7 @@ static void attachFunc( sqlite3ResetAllSchemasOfConnection(db); db->nDb = iDb; if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); sqlite3DbFree(db, zErrDyn); zErrDyn = sqlite3MPrintf(db, "out of memory"); }else if( zErrDyn==0 ){ @@ -83577,7 +98619,7 @@ static void detachFunc( for(i=0; inDb; i++){ pDb = &db->aDb[i]; if( pDb->pBt==0 ) continue; - if( sqlite3StrICmp(pDb->zName, zName)==0 ) break; + if( sqlite3StrICmp(pDb->zDbSName, zName)==0 ) break; } if( i>=db->nDb ){ @@ -83601,7 +98643,7 @@ static void detachFunc( sqlite3BtreeClose(pDb->pBt); pDb->pBt = 0; pDb->pSchema = 0; - sqlite3ResetAllSchemasOfConnection(db); + sqlite3CollapseDatabaseArray(db); return; detach_error: @@ -83627,6 +98669,7 @@ static void codeAttach( sqlite3* db = pParse->db; int regArgs; + if( pParse->nErr ) goto attach_end; memset(&sName, 0, sizeof(NameContext)); sName.pParse = pParse; @@ -83635,7 +98678,6 @@ static void codeAttach( SQLITE_OK!=(rc = resolveAttachExpr(&sName, pDbname)) || SQLITE_OK!=(rc = resolveAttachExpr(&sName, pKey)) ){ - pParse->nErr++; goto attach_end; } @@ -83663,11 +98705,11 @@ static void codeAttach( assert( v || db->mallocFailed ); if( v ){ - sqlite3VdbeAddOp3(v, OP_Function, 0, regArgs+3-pFunc->nArg, regArgs+3); + sqlite3VdbeAddOp4(v, OP_Function0, 0, regArgs+3-pFunc->nArg, regArgs+3, + (char *)pFunc, P4_FUNCDEF); assert( pFunc->nArg==-1 || (pFunc->nArg&0xff)==pFunc->nArg ); sqlite3VdbeChangeP5(v, (u8)(pFunc->nArg)); - sqlite3VdbeChangeP4(v, -1, (char *)pFunc, P4_FUNCDEF); - + /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this ** statement only). For DETACH, set it to false (expire all existing ** statements). @@ -83692,12 +98734,10 @@ SQLITE_PRIVATE void sqlite3Detach(Parse *pParse, Expr *pDbname){ SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ - detachFunc, /* xFunc */ - 0, /* xStep */ + detachFunc, /* xSFunc */ 0, /* xFinalize */ "sqlite_detach", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ + {0} }; codeAttach(pParse, SQLITE_DETACH, &detach_func, pDbname, 0, 0, pDbname); } @@ -83713,12 +98753,10 @@ SQLITE_PRIVATE void sqlite3Attach(Parse *pParse, Expr *p, Expr *pDbname, Expr *p SQLITE_UTF8, /* funcFlags */ 0, /* pUserData */ 0, /* pNext */ - attachFunc, /* xFunc */ - 0, /* xStep */ + attachFunc, /* xSFunc */ 0, /* xFinalize */ "sqlite_attach", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ + {0} }; codeAttach(pParse, SQLITE_ATTACH, &attach_func, p, p, pDbname, pKey); } @@ -83740,7 +98778,7 @@ SQLITE_PRIVATE void sqlite3FixInit( db = pParse->db; assert( db->nDb>iDb ); pFix->pParse = pParse; - pFix->zDb = db->aDb[iDb].zName; + pFix->zDb = db->aDb[iDb].zDbSName; pFix->pSchema = db->aDb[iDb].pSchema; pFix->zType = zType; pFix->pName = pName; @@ -83837,7 +98875,7 @@ SQLITE_PRIVATE int sqlite3FixExpr( return 1; } } - if( ExprHasProperty(pExpr, EP_TokenOnly) ) break; + if( ExprHasProperty(pExpr, EP_TokenOnly|EP_Leaf) ) break; if( ExprHasProperty(pExpr, EP_xIsSelect) ){ if( sqlite3FixSelect(pFix, pExpr->x.pSelect) ) return 1; }else{ @@ -83905,6 +98943,7 @@ SQLITE_PRIVATE int sqlite3FixTriggerStep( ** systems that do not need this facility may omit it by recompiling ** the library with -DSQLITE_OMIT_AUTHORIZATION=1 */ +/* #include "sqliteInt.h" */ /* ** All of the code in this file may be omitted by defining a single @@ -83962,8 +99001,11 @@ SQLITE_API int sqlite3_set_authorizer( int (*xAuth)(void*,int,const char*,const char*,const char*,const char*), void *pArg ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); - db->xAuth = xAuth; + db->xAuth = (sqlite3_xauth)xAuth; db->pAuthArg = pArg; sqlite3ExpirePreparedStatements(db); sqlite3_mutex_leave(db->mutex); @@ -83994,11 +99036,16 @@ SQLITE_PRIVATE int sqlite3AuthReadCol( const char *zCol, /* Column name */ int iDb /* Index of containing database. */ ){ - sqlite3 *db = pParse->db; /* Database handle */ - char *zDb = db->aDb[iDb].zName; /* Name of attached database */ - int rc; /* Auth callback return code */ + sqlite3 *db = pParse->db; /* Database handle */ + char *zDb = db->aDb[iDb].zDbSName; /* Schema name of attached database */ + int rc; /* Auth callback return code */ - rc = db->xAuth(db->pAuthArg, SQLITE_READ, zTab,zCol,zDb,pParse->zAuthContext); + if( db->init.busy ) return SQLITE_OK; + rc = db->xAuth(db->pAuthArg, SQLITE_READ, zTab,zCol,zDb,pParse->zAuthContext +#ifdef SQLITE_USER_AUTHENTICATION + ,db->auth.zAuthUser +#endif + ); if( rc==SQLITE_DENY ){ if( db->nDb>2 || iDb!=0 ){ sqlite3ErrorMsg(pParse, "access to %s.%s.%s is prohibited",zDb,zTab,zCol); @@ -84098,7 +99145,11 @@ SQLITE_PRIVATE int sqlite3AuthCheck( if( db->xAuth==0 ){ return SQLITE_OK; } - rc = db->xAuth(db->pAuthArg, code, zArg1, zArg2, zArg3, pParse->zAuthContext); + rc = db->xAuth(db->pAuthArg, code, zArg1, zArg2, zArg3, pParse->zAuthContext +#ifdef SQLITE_USER_AUTHENTICATION + ,db->auth.zAuthUser +#endif + ); if( rc==SQLITE_DENY ){ sqlite3ErrorMsg(pParse, "not authorized"); pParse->rc = SQLITE_AUTH; @@ -84164,15 +99215,7 @@ SQLITE_PRIVATE void sqlite3AuthContextPop(AuthContext *pContext){ ** COMMIT ** ROLLBACK */ - -/* -** This routine is called when a new SQL statement is beginning to -** be parsed. Initialize the pParse structure as needed. -*/ -SQLITE_PRIVATE void sqlite3BeginParse(Parse *pParse, int explainFlag){ - pParse->explain = (u8)explainFlag; - pParse->nVar = 0; -} +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_SHARED_CACHE /* @@ -84180,10 +99223,10 @@ SQLITE_PRIVATE void sqlite3BeginParse(Parse *pParse, int explainFlag){ ** codeTableLocks() functions. */ struct TableLock { - int iDb; /* The database containing the table to be locked */ - int iTab; /* The root page of the table to be locked */ - u8 isWriteLock; /* True for write lock. False for a read lock */ - const char *zName; /* Name of the table */ + int iDb; /* The database containing the table to be locked */ + int iTab; /* The root page of the table to be locked */ + u8 isWriteLock; /* True for write lock. False for a read lock */ + const char *zLockName; /* Name of the table */ }; /* @@ -84209,6 +99252,8 @@ SQLITE_PRIVATE void sqlite3TableLock( TableLock *p; assert( iDb>=0 ); + if( iDb==1 ) return; + if( !sqlite3BtreeSharable(pParse->db->aDb[iDb].pBt) ) return; for(i=0; inTableLock; i++){ p = &pToplevel->aTableLock[i]; if( p->iDb==iDb && p->iTab==iTab ){ @@ -84225,10 +99270,10 @@ SQLITE_PRIVATE void sqlite3TableLock( p->iDb = iDb; p->iTab = iTab; p->isWriteLock = isWriteLock; - p->zName = zName; + p->zLockName = zName; }else{ pToplevel->nTableLock = 0; - pToplevel->db->mallocFailed = 1; + sqlite3OomFault(pToplevel->db); } } @@ -84247,13 +99292,26 @@ static void codeTableLocks(Parse *pParse){ TableLock *p = &pParse->aTableLock[i]; int p1 = p->iDb; sqlite3VdbeAddOp4(pVdbe, OP_TableLock, p1, p->iTab, p->isWriteLock, - p->zName, P4_STATIC); + p->zLockName, P4_STATIC); } } #else #define codeTableLocks(x) #endif +/* +** Return TRUE if the given yDbMask object is empty - if it contains no +** 1 bits. This routine is used by the DbMaskAllZero() and DbMaskNotZero() +** macros when SQLITE_MAX_ATTACHED is greater than 30. +*/ +#if SQLITE_MAX_ATTACHED>30 +SQLITE_PRIVATE int sqlite3DbMaskAllZero(yDbMask m){ + int i; + for(i=0; ipToplevel==0 ); db = pParse->db; - if( db->mallocFailed ) return; if( pParse->nested ) return; - if( pParse->nErr ) return; + if( db->mallocFailed || pParse->nErr ){ + if( pParse->rc==SQLITE_OK ) pParse->rc = SQLITE_ERROR; + return; + } /* Begin by generating some termination code at the end of the ** vdbe program @@ -84281,29 +99341,46 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){ assert( !pParse->isMultiWrite || sqlite3VdbeAssertMayAbort(v, pParse->mayAbort)); if( v ){ - while( sqlite3VdbeDeletePriorOpcode(v, OP_Close) ){} sqlite3VdbeAddOp0(v, OP_Halt); +#if SQLITE_USER_AUTHENTICATION + if( pParse->nTableLock>0 && db->init.busy==0 ){ + sqlite3UserAuthInit(db); + if( db->auth.authLevelrc = SQLITE_AUTH_USER; + return; + } + } +#endif + /* The cookie mask contains one bit for each database file open. ** (Bit 0 is for main, bit 1 is for temp, and so forth.) Bits are ** set for each database that is used. Generate code to start a ** transaction on each used database and to verify the schema cookie ** on each used database. */ - if( pParse->cookieGoto>0 ){ - yDbMask mask; - int iDb, i, addr; - sqlite3VdbeJumpHere(v, pParse->cookieGoto-1); - for(iDb=0, mask=1; iDbnDb; mask<<=1, iDb++){ - if( (mask & pParse->cookieMask)==0 ) continue; + if( db->mallocFailed==0 + && (DbMaskNonZero(pParse->cookieMask) || pParse->pConstExpr) + ){ + int iDb, i; + assert( sqlite3VdbeGetOp(v, 0)->opcode==OP_Init ); + sqlite3VdbeJumpHere(v, 0); + for(iDb=0; iDbnDb; iDb++){ + Schema *pSchema; + if( DbMaskTest(pParse->cookieMask, iDb)==0 ) continue; sqlite3VdbeUsesBtree(v, iDb); - sqlite3VdbeAddOp2(v,OP_Transaction, iDb, (mask & pParse->writeMask)!=0); - if( db->init.busy==0 ){ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - sqlite3VdbeAddOp3(v, OP_VerifyCookie, - iDb, pParse->cookieValue[iDb], - db->aDb[iDb].pSchema->iGeneration); - } + pSchema = db->aDb[iDb].pSchema; + sqlite3VdbeAddOp4Int(v, + OP_Transaction, /* Opcode */ + iDb, /* P1 */ + DbMaskTest(pParse->writeMask,iDb), /* P2 */ + pSchema->schema_cookie, /* P3 */ + pSchema->iGeneration /* P4 */ + ); + if( db->init.busy==0 ) sqlite3VdbeChangeP5(v, 1); + VdbeComment((v, + "usesStmtJournal=%d", pParse->mayAbort && pParse->isMultiWrite)); } #ifndef SQLITE_OMIT_VIRTUALTABLE for(i=0; inVtabLock; i++){ @@ -84324,40 +99401,32 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){ sqlite3AutoincrementBegin(pParse); /* Code constant expressions that where factored out of inner loops */ - addr = pParse->cookieGoto; if( pParse->pConstExpr ){ ExprList *pEL = pParse->pConstExpr; - pParse->cookieGoto = 0; + pParse->okConstFactor = 0; for(i=0; inExpr; i++){ sqlite3ExprCode(pParse, pEL->a[i].pExpr, pEL->a[i].u.iConstExprReg); } } /* Finally, jump back to the beginning of the executable code. */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addr); + sqlite3VdbeGoto(v, 1); } } /* Get the VDBE program ready for execution */ - if( v && ALWAYS(pParse->nErr==0) && !db->mallocFailed ){ + if( v && pParse->nErr==0 && !db->mallocFailed ){ assert( pParse->iCacheLevel==0 ); /* Disables and re-enables match */ /* A minimum of one cursor is required if autoincrement is used * See ticket [a696379c1f08866] */ if( pParse->pAinc!=0 && pParse->nTab==0 ) pParse->nTab = 1; sqlite3VdbeMakeReady(v, pParse); pParse->rc = SQLITE_DONE; - pParse->colNamesSet = 0; }else{ pParse->rc = SQLITE_ERROR; } - pParse->nTab = 0; - pParse->nMem = 0; - pParse->nSet = 0; - pParse->nVar = 0; - pParse->cookieMask = 0; - pParse->cookieGoto = 0; } /* @@ -84377,8 +99446,7 @@ SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ char *zSql; char *zErrMsg = 0; sqlite3 *db = pParse->db; -# define SAVE_SZ (sizeof(Parse) - offsetof(Parse,nVar)) - char saveBuf[SAVE_SZ]; + char saveBuf[PARSE_TAIL_SZ]; if( pParse->nErr ) return; assert( pParse->nested<10 ); /* Nesting should only be of limited depth */ @@ -84389,15 +99457,25 @@ SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ return; /* A malloc must have failed */ } pParse->nested++; - memcpy(saveBuf, &pParse->nVar, SAVE_SZ); - memset(&pParse->nVar, 0, SAVE_SZ); + memcpy(saveBuf, PARSE_TAIL(pParse), PARSE_TAIL_SZ); + memset(PARSE_TAIL(pParse), 0, PARSE_TAIL_SZ); sqlite3RunParser(pParse, zSql, &zErrMsg); sqlite3DbFree(db, zErrMsg); sqlite3DbFree(db, zSql); - memcpy(&pParse->nVar, saveBuf, SAVE_SZ); + memcpy(PARSE_TAIL(pParse), saveBuf, PARSE_TAIL_SZ); pParse->nested--; } +#if SQLITE_USER_AUTHENTICATION +/* +** Return TRUE if zTable is the name of the system table that stores the +** list of users and their access credentials. +*/ +SQLITE_PRIVATE int sqlite3UserAuthTable(const char *zTable){ + return sqlite3_stricmp(zTable, "sqlite_user")==0; +} +#endif + /* ** Locate the in-memory structure that describes a particular database ** table given the name of that table and (optionally) the name of the @@ -84413,19 +99491,32 @@ SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3 *db, const char *zName, const char *zDatabase){ Table *p = 0; int i; - int nName; - assert( zName!=0 ); - nName = sqlite3Strlen30(zName); + /* All mutexes are required for schema access. Make sure we hold them. */ assert( zDatabase!=0 || sqlite3BtreeHoldsAllMutexes(db) ); - for(i=OMIT_TEMPDB; inDb; i++){ - int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - if( zDatabase!=0 && sqlite3StrICmp(zDatabase, db->aDb[j].zName) ) continue; - assert( sqlite3SchemaMutexHeld(db, j, 0) ); - p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName, nName); - if( p ) break; +#if SQLITE_USER_AUTHENTICATION + /* Only the admin user is allowed to know that the sqlite_user table + ** exists */ + if( db->auth.authLevelnDb; i++){ + int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ + if( zDatabase==0 || sqlite3StrICmp(zDatabase, db->aDb[j].zDbSName)==0 ){ + assert( sqlite3SchemaMutexHeld(db, j, 0) ); + p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName); + if( p ) return p; + } + } + /* Not found. If the name we were looking for was temp.sqlite_master + ** then change the name to sqlite_temp_master and try again. */ + if( sqlite3StrICmp(zName, MASTER_NAME)!=0 ) break; + if( sqlite3_stricmp(zDatabase, db->aDb[1].zDbSName)!=0 ) break; + zName = TEMP_MASTER_NAME; + } + return 0; } /* @@ -84440,7 +99531,7 @@ SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3 *db, const char *zName, const cha */ SQLITE_PRIVATE Table *sqlite3LocateTable( Parse *pParse, /* context in which to report errors */ - int isView, /* True if looking for a VIEW rather than a TABLE */ + u32 flags, /* LOCATE_VIEW or LOCATE_NOERR */ const char *zName, /* Name of the table we are looking for */ const char *zDbase /* Name of the database. Might be NULL */ ){ @@ -84454,14 +99545,31 @@ SQLITE_PRIVATE Table *sqlite3LocateTable( p = sqlite3FindTable(pParse->db, zName, zDbase); if( p==0 ){ - const char *zMsg = isView ? "no such view" : "no such table"; - if( zDbase ){ - sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName); - }else{ - sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName); + const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table"; +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( sqlite3FindDbName(pParse->db, zDbase)<1 ){ + /* If zName is the not the name of a table in the schema created using + ** CREATE, then check to see if it is the name of an virtual table that + ** can be an eponymous virtual table. */ + Module *pMod = (Module*)sqlite3HashFind(&pParse->db->aModule, zName); + if( pMod==0 && sqlite3_strnicmp(zName, "pragma_", 7)==0 ){ + pMod = sqlite3PragmaVtabRegister(pParse->db, zName); + } + if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){ + return pMod->pEpoTab; + } + } +#endif + if( (flags & LOCATE_NOERR)==0 ){ + if( zDbase ){ + sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName); + }else{ + sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName); + } + pParse->checkSchema = 1; } - pParse->checkSchema = 1; } + return p; } @@ -84476,18 +99584,18 @@ SQLITE_PRIVATE Table *sqlite3LocateTable( */ SQLITE_PRIVATE Table *sqlite3LocateTableItem( Parse *pParse, - int isView, + u32 flags, struct SrcList_item *p ){ const char *zDb; assert( p->pSchema==0 || p->zDatabase==0 ); if( p->pSchema ){ int iDb = sqlite3SchemaToIndex(pParse->db, p->pSchema); - zDb = pParse->db->aDb[iDb].zName; + zDb = pParse->db->aDb[iDb].zDbSName; }else{ zDb = p->zDatabase; } - return sqlite3LocateTable(pParse, isView, p->zName, zDb); + return sqlite3LocateTable(pParse, flags, p->zName, zDb); } /* @@ -84505,16 +99613,15 @@ SQLITE_PRIVATE Table *sqlite3LocateTableItem( SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3 *db, const char *zName, const char *zDb){ Index *p = 0; int i; - int nName = sqlite3Strlen30(zName); /* All mutexes are required for schema access. Make sure we hold them. */ assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) ); for(i=OMIT_TEMPDB; inDb; i++){ int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ Schema *pSchema = db->aDb[j].pSchema; assert( pSchema ); - if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zName) ) continue; + if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zDbSName) ) continue; assert( sqlite3SchemaMutexHeld(db, j, 0) ); - p = sqlite3HashFind(&pSchema->idxHash, zName, nName); + p = sqlite3HashFind(&pSchema->idxHash, zName); if( p ) break; } return p; @@ -84527,10 +99634,13 @@ static void freeIndex(sqlite3 *db, Index *p){ #ifndef SQLITE_OMIT_ANALYZE sqlite3DeleteIndexSamples(db, p); #endif - if( db==0 || db->pnBytesFreed==0 ) sqlite3KeyInfoUnref(p->pKeyInfo); sqlite3ExprDelete(db, p->pPartIdxWhere); + sqlite3ExprListDelete(db, p->aColExpr); sqlite3DbFree(db, p->zColAff); - if( p->isResized ) sqlite3DbFree(db, p->azColl); + if( p->isResized ) sqlite3DbFree(db, (void *)p->azColl); +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 + sqlite3_free(p->aiRowEst); +#endif sqlite3DbFree(db, p); } @@ -84542,13 +99652,11 @@ static void freeIndex(sqlite3 *db, Index *p){ */ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteIndex(sqlite3 *db, int iDb, const char *zIdxName){ Index *pIndex; - int len; Hash *pHash; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); pHash = &db->aDb[iDb].pSchema->idxHash; - len = sqlite3Strlen30(zIdxName); - pIndex = sqlite3HashInsert(pHash, zIdxName, len, 0); + pIndex = sqlite3HashInsert(pHash, zIdxName, 0); if( ALWAYS(pIndex) ){ if( pIndex->pTable->pIndex==pIndex ){ pIndex->pTable->pIndex = pIndex->pNext; @@ -84580,8 +99688,8 @@ SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3 *db){ for(i=j=2; inDb; i++){ struct Db *pDb = &db->aDb[i]; if( pDb->pBt==0 ){ - sqlite3DbFree(db, pDb->zName); - pDb->zName = 0; + sqlite3DbFree(db, pDb->zDbSName); + pDb->zDbSName = 0; continue; } if( jaDb[j], 0, (db->nDb-j)*sizeof(db->aDb[j])); db->nDb = j; if( db->nDb<=2 && db->aDb!=db->aDbStatic ){ memcpy(db->aDbStatic, db->aDb, 2*sizeof(db->aDb[0])); @@ -84654,7 +99761,7 @@ SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3 *db){ ** Delete memory allocated for the column names of a table or view (the ** Table.aCol[] array). */ -static void sqliteDeleteColumnNames(sqlite3 *db, Table *pTable){ +SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3 *db, Table *pTable){ int i; Column *pCol; assert( pTable!=0 ); @@ -84662,8 +99769,6 @@ static void sqliteDeleteColumnNames(sqlite3 *db, Table *pTable){ for(i=0; inCol; i++, pCol++){ sqlite3DbFree(db, pCol->zName); sqlite3ExprDelete(db, pCol->pDflt); - sqlite3DbFree(db, pCol->zDflt); - sqlite3DbFree(db, pCol->zType); sqlite3DbFree(db, pCol->zColl); } sqlite3DbFree(db, pTable->aCol); @@ -84685,16 +99790,10 @@ static void sqliteDeleteColumnNames(sqlite3 *db, Table *pTable){ ** db parameter can be used with db->pnBytesFreed to measure the memory ** used by the Table object. */ -SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ +static void SQLITE_NOINLINE deleteTable(sqlite3 *db, Table *pTable){ Index *pIndex, *pNext; TESTONLY( int nLookaside; ) /* Used to verify lookaside not used for schema */ - assert( !pTable || pTable->nRef>0 ); - - /* Do not delete the table until the reference count reaches zero. */ - if( !pTable ) return; - if( ((!db || db->pnBytesFreed==0) && (--pTable->nRef)>0) ) return; - /* Record the number of outstanding lookaside allocations in schema Tables ** prior to doing any free() operations. Since schema Tables do not use ** lookaside, this number should not change. */ @@ -84704,11 +99803,12 @@ SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ /* Delete all indices associated with this table. */ for(pIndex = pTable->pIndex; pIndex; pIndex=pNext){ pNext = pIndex->pNext; - assert( pIndex->pSchema==pTable->pSchema ); - if( !db || db->pnBytesFreed==0 ){ + assert( pIndex->pSchema==pTable->pSchema + || (IsVirtual(pTable) && pIndex->idxType!=SQLITE_IDXTYPE_APPDEF) ); + if( (db==0 || db->pnBytesFreed==0) && !IsVirtual(pTable) ){ char *zName = pIndex->zName; TESTONLY ( Index *pOld = ) sqlite3HashInsert( - &pIndex->pSchema->idxHash, zName, sqlite3Strlen30(zName), 0 + &pIndex->pSchema->idxHash, zName, 0 ); assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); assert( pOld==pIndex || pOld==0 ); @@ -84721,13 +99821,11 @@ SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ /* Delete the Table structure itself. */ - sqliteDeleteColumnNames(db, pTable); + sqlite3DeleteColumnNames(db, pTable); sqlite3DbFree(db, pTable->zName); sqlite3DbFree(db, pTable->zColAff); sqlite3SelectDelete(db, pTable->pSelect); -#ifndef SQLITE_OMIT_CHECK sqlite3ExprListDelete(db, pTable->pCheck); -#endif #ifndef SQLITE_OMIT_VIRTUALTABLE sqlite3VtabClear(db, pTable); #endif @@ -84736,6 +99834,13 @@ SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ /* Verify that no lookaside memory was used by schema tables */ assert( nLookaside==0 || nLookaside==db->lookaside.nOut ); } +SQLITE_PRIVATE void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ + /* Do not delete the table until the reference count reaches zero. */ + if( !pTable ) return; + if( ((!db || db->pnBytesFreed==0) && (--pTable->nTabRef)>0) ) return; + deleteTable(db, pTable); +} + /* ** Unlink the given table from the hash tables and the delete the @@ -84751,8 +99856,7 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); testcase( zTabName[0]==0 ); /* Zero-length table names are allowed */ pDb = &db->aDb[iDb]; - p = sqlite3HashInsert(&pDb->pSchema->tblHash, zTabName, - sqlite3Strlen30(zTabName),0); + p = sqlite3HashInsert(&pDb->pSchema->tblHash, zTabName, 0); sqlite3DeleteTable(db, p); db->flags |= SQLITE_InternChanges; } @@ -84787,7 +99891,7 @@ SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3 *db, Token *pName){ */ SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *p, int iDb){ Vdbe *v = sqlite3GetVdbe(p); - sqlite3TableLock(p, iDb, MASTER_ROOT, 1, SCHEMA_TABLE(iDb)); + sqlite3TableLock(p, iDb, MASTER_ROOT, 1, MASTER_NAME); sqlite3VdbeAddOp4Int(v, OP_OpenWrite, 0, MASTER_ROOT, iDb, 5); if( p->nTab==0 ){ p->nTab = 1; @@ -84804,12 +99908,11 @@ SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *db, const char *zName){ int i = -1; /* Database number */ if( zName ){ Db *pDb; - int n = sqlite3Strlen30(zName); for(i=(db->nDb-1), pDb=&db->aDb[i]; i>=0; i--, pDb--){ - if( (!OMIT_TEMPDB || i!=1 ) && n==sqlite3Strlen30(pDb->zName) && - 0==sqlite3StrICmp(pDb->zName, zName) ){ - break; - } + if( 0==sqlite3_stricmp(pDb->zDbSName, zName) ) break; + /* "main" is always an acceptable alias for the primary database + ** even if it has been renamed using SQLITE_DBCONFIG_MAINDBNAME. */ + if( i==0 && 0==sqlite3_stricmp("main", zName) ) break; } } return i; @@ -84855,21 +99958,20 @@ SQLITE_PRIVATE int sqlite3TwoPartName( int iDb; /* Database holding the object */ sqlite3 *db = pParse->db; - if( ALWAYS(pName2!=0) && pName2->n>0 ){ + assert( pName2!=0 ); + if( pName2->n>0 ){ if( db->init.busy ) { sqlite3ErrorMsg(pParse, "corrupt database"); - pParse->nErr++; return -1; } *pUnqual = pName2; iDb = sqlite3FindDb(db, pName1); if( iDb<0 ){ sqlite3ErrorMsg(pParse, "unknown database %T", pName1); - pParse->nErr++; return -1; } }else{ - assert( db->init.iDb==0 || db->init.busy ); + assert( db->init.iDb==0 || db->init.busy || (db->flags & SQLITE_Vacuum)!=0); iDb = db->init.iDb; *pUnqual = pName1; } @@ -84898,7 +100000,7 @@ SQLITE_PRIVATE int sqlite3CheckObjectName(Parse *pParse, const char *zName){ */ SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table *pTab){ Index *p; - for(p=pTab->pIndex; p && p->autoIndex!=2; p=p->pNext){} + for(p=pTab->pIndex; p && !IsPrimaryKeyIndex(p); p=p->pNext){} return p; } @@ -84946,62 +100048,46 @@ SQLITE_PRIVATE void sqlite3StartTable( int iDb; /* Database number to create the table in */ Token *pName; /* Unqualified name of the table to create */ - /* The table or view name to create is passed to this routine via tokens - ** pName1 and pName2. If the table name was fully qualified, for example: - ** - ** CREATE TABLE xxx.yyy (...); - ** - ** Then pName1 is set to "xxx" and pName2 "yyy". On the other hand if - ** the table name is not fully qualified, i.e.: - ** - ** CREATE TABLE yyy(...); - ** - ** Then pName1 is set to "yyy" and pName2 is "". - ** - ** The call below sets the pName pointer to point at the token (pName1 or - ** pName2) that stores the unqualified table name. The variable iDb is - ** set to the index of the database that the table or view is to be - ** created in. - */ - iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName); - if( iDb<0 ) return; - if( !OMIT_TEMPDB && isTemp && pName2->n>0 && iDb!=1 ){ - /* If creating a temp table, the name may not be qualified. Unless - ** the database name is "temp" anyway. */ - sqlite3ErrorMsg(pParse, "temporary table name must be unqualified"); - return; + if( db->init.busy && db->init.newTnum==1 ){ + /* Special case: Parsing the sqlite_master or sqlite_temp_master schema */ + iDb = db->init.iDb; + zName = sqlite3DbStrDup(db, SCHEMA_TABLE(iDb)); + pName = pName1; + }else{ + /* The common case */ + iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName); + if( iDb<0 ) return; + if( !OMIT_TEMPDB && isTemp && pName2->n>0 && iDb!=1 ){ + /* If creating a temp table, the name may not be qualified. Unless + ** the database name is "temp" anyway. */ + sqlite3ErrorMsg(pParse, "temporary table name must be unqualified"); + return; + } + if( !OMIT_TEMPDB && isTemp ) iDb = 1; + zName = sqlite3NameFromToken(db, pName); } - if( !OMIT_TEMPDB && isTemp ) iDb = 1; - pParse->sNameToken = *pName; - zName = sqlite3NameFromToken(db, pName); if( zName==0 ) return; if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto begin_table_error; } if( db->init.iDb==1 ) isTemp = 1; #ifndef SQLITE_OMIT_AUTHORIZATION - assert( (isTemp & 1)==isTemp ); + assert( isTemp==0 || isTemp==1 ); + assert( isView==0 || isView==1 ); { - int code; - char *zDb = db->aDb[iDb].zName; + static const u8 aCode[] = { + SQLITE_CREATE_TABLE, + SQLITE_CREATE_TEMP_TABLE, + SQLITE_CREATE_VIEW, + SQLITE_CREATE_TEMP_VIEW + }; + char *zDb = db->aDb[iDb].zDbSName; if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(isTemp), 0, zDb) ){ goto begin_table_error; } - if( isView ){ - if( !OMIT_TEMPDB && isTemp ){ - code = SQLITE_CREATE_TEMP_VIEW; - }else{ - code = SQLITE_CREATE_VIEW; - } - }else{ - if( !OMIT_TEMPDB && isTemp ){ - code = SQLITE_CREATE_TEMP_TABLE; - }else{ - code = SQLITE_CREATE_TABLE; - } - } - if( !isVirtual && sqlite3AuthCheck(pParse, code, zName, 0, zDb) ){ + if( !isVirtual && sqlite3AuthCheck(pParse, (int)aCode[isTemp+2*isView], + zName, 0, zDb) ){ goto begin_table_error; } } @@ -85015,7 +100101,7 @@ SQLITE_PRIVATE void sqlite3StartTable( ** collisions. */ if( !IN_DECLARE_VTAB ){ - char *zDb = db->aDb[iDb].zName; + char *zDb = db->aDb[iDb].zDbSName; if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ goto begin_table_error; } @@ -85024,7 +100110,7 @@ SQLITE_PRIVATE void sqlite3StartTable( if( !noErr ){ sqlite3ErrorMsg(pParse, "table %T already exists", pName); }else{ - assert( !db->init.busy ); + assert( !db->init.busy || CORRUPT_DB ); sqlite3CodeVerifySchema(pParse, iDb); } goto begin_table_error; @@ -85037,16 +100123,16 @@ SQLITE_PRIVATE void sqlite3StartTable( pTable = sqlite3DbMallocZero(db, sizeof(Table)); if( pTable==0 ){ - db->mallocFailed = 1; - pParse->rc = SQLITE_NOMEM; + assert( db->mallocFailed ); + pParse->rc = SQLITE_NOMEM_BKPT; pParse->nErr++; goto begin_table_error; } pTable->zName = zName; pTable->iPKey = -1; pTable->pSchema = db->aDb[iDb].pSchema; - pTable->nRef = 1; - pTable->nRowEst = 1048576; + pTable->nTabRef = 1; + pTable->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); assert( pParse->pNewTable==0 ); pParse->pNewTable = pTable; @@ -85070,10 +100156,12 @@ SQLITE_PRIVATE void sqlite3StartTable( ** now. */ if( !db->init.busy && (v = sqlite3GetVdbe(pParse))!=0 ){ - int j1; + int addr1; int fileFormat; int reg1, reg2, reg3; - sqlite3BeginWriteOperation(pParse, 0, iDb); + /* nullRow[] is an OP_Record encoding of a row containing 5 NULLs */ + static const char nullRow[] = { 6, 0, 0, 0, 0, 0 }; + sqlite3BeginWriteOperation(pParse, 1, iDb); #ifndef SQLITE_OMIT_VIRTUALTABLE if( isVirtual ){ @@ -85089,14 +100177,12 @@ SQLITE_PRIVATE void sqlite3StartTable( reg3 = ++pParse->nMem; sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, reg3, BTREE_FILE_FORMAT); sqlite3VdbeUsesBtree(v, iDb); - j1 = sqlite3VdbeAddOp1(v, OP_If, reg3); + addr1 = sqlite3VdbeAddOp1(v, OP_If, reg3); VdbeCoverage(v); fileFormat = (db->flags & SQLITE_LegacyFileFmt)!=0 ? 1 : SQLITE_MAX_FILE_FORMAT; - sqlite3VdbeAddOp2(v, OP_Integer, fileFormat, reg3); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, reg3); - sqlite3VdbeAddOp2(v, OP_Integer, ENC(db), reg3); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_TEXT_ENCODING, reg3); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, fileFormat); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_TEXT_ENCODING, ENC(db)); + sqlite3VdbeJumpHere(v, addr1); /* This just creates a place-holder record in the sqlite_master table. ** The record created does not contain anything yet. It will be replaced @@ -85117,7 +100203,7 @@ SQLITE_PRIVATE void sqlite3StartTable( } sqlite3OpenMasterTable(pParse, iDb); sqlite3VdbeAddOp2(v, OP_NewRowid, 0, reg1); - sqlite3VdbeAddOp2(v, OP_Null, 0, reg3); + sqlite3VdbeAddOp4(v, OP_Blob, 6, reg3, 0, nullRow, P4_STATIC); sqlite3VdbeAddOp3(v, OP_Insert, 0, reg3, reg1); sqlite3VdbeChangeP5(v, OPFLAG_APPEND); sqlite3VdbeAddOp0(v, OP_Close); @@ -85132,18 +100218,19 @@ begin_table_error: return; } -/* -** This macro is used to compare two strings in a case-insensitive manner. -** It is slightly faster than calling sqlite3StrICmp() directly, but -** produces larger code. -** -** WARNING: This macro is not compatible with the strcmp() family. It -** returns true if the two strings are equal, otherwise false. +/* Set properties of a table column based on the (magical) +** name of the column. */ -#define STRICMP(x, y) (\ -sqlite3UpperToLower[*(unsigned char *)(x)]== \ -sqlite3UpperToLower[*(unsigned char *)(y)] \ -&& sqlite3StrICmp((x)+1,(y)+1)==0 ) +#if SQLITE_ENABLE_HIDDEN_COLUMNS +SQLITE_PRIVATE void sqlite3ColumnPropertiesFromName(Table *pTab, Column *pCol){ + if( sqlite3_strnicmp(pCol->zName, "__hidden__", 10)==0 ){ + pCol->colFlags |= COLFLAG_HIDDEN; + }else if( pTab && pCol!=pTab->aCol && (pCol[-1].colFlags & COLFLAG_HIDDEN) ){ + pTab->tabFlags |= TF_OOOHidden; + } +} +#endif + /* ** Add a new column to the table currently being constructed. @@ -85153,10 +100240,11 @@ sqlite3UpperToLower[*(unsigned char *)(y)] \ ** first to get things going. Then this routine is called for each ** column. */ -SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName){ +SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName, Token *pType){ Table *p; int i; char *z; + char *zType; Column *pCol; sqlite3 *db = pParse->db; if( (p = pParse->pNewTable)==0 ) return; @@ -85166,10 +100254,13 @@ SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName){ return; } #endif - z = sqlite3NameFromToken(db, pName); + z = sqlite3DbMallocRaw(db, pName->n + pType->n + 2); if( z==0 ) return; + memcpy(z, pName->z, pName->n); + z[pName->n] = 0; + sqlite3Dequote(z); for(i=0; inCol; i++){ - if( STRICMP(z, p->aCol[i].zName) ){ + if( sqlite3_stricmp(z, p->aCol[i].zName)==0 ){ sqlite3ErrorMsg(pParse, "duplicate column name: %s", z); sqlite3DbFree(db, z); return; @@ -85187,14 +100278,23 @@ SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName){ pCol = &p->aCol[p->nCol]; memset(pCol, 0, sizeof(p->aCol[0])); pCol->zName = z; + sqlite3ColumnPropertiesFromName(p, pCol); - /* If there is no type specified, columns have the default affinity - ** 'NONE'. If there is a type specified, then sqlite3AddColumnType() will - ** be called next to set pCol->affinity correctly. - */ - pCol->affinity = SQLITE_AFF_NONE; - pCol->szEst = 1; + if( pType->n==0 ){ + /* If there is no type specified, columns have the default affinity + ** 'BLOB'. */ + pCol->affinity = SQLITE_AFF_BLOB; + pCol->szEst = 1; + }else{ + zType = z + sqlite3Strlen30(z) + 1; + memcpy(zType, pType->z, pType->n); + zType[pType->n] = 0; + sqlite3Dequote(zType); + pCol->affinity = sqlite3AffinityType(zType, &pCol->szEst); + pCol->colFlags |= COLFLAG_HASTYPE; + } p->nCol++; + pParse->constraintName.n = 0; } /* @@ -85227,7 +100327,7 @@ SQLITE_PRIVATE void sqlite3AddNotNull(Parse *pParse, int onError){ ** 'CHAR' | SQLITE_AFF_TEXT ** 'CLOB' | SQLITE_AFF_TEXT ** 'TEXT' | SQLITE_AFF_TEXT -** 'BLOB' | SQLITE_AFF_NONE +** 'BLOB' | SQLITE_AFF_BLOB ** 'REAL' | SQLITE_AFF_REAL ** 'FLOA' | SQLITE_AFF_REAL ** 'DOUB' | SQLITE_AFF_REAL @@ -85240,7 +100340,7 @@ SQLITE_PRIVATE char sqlite3AffinityType(const char *zIn, u8 *pszEst){ char aff = SQLITE_AFF_NUMERIC; const char *zChar = 0; - if( zIn==0 ) return aff; + assert( zIn!=0 ); while( zIn[0] ){ h = (h<<8) + sqlite3UpperToLower[(*zIn)&0xff]; zIn++; @@ -85253,7 +100353,7 @@ SQLITE_PRIVATE char sqlite3AffinityType(const char *zIn, u8 *pszEst){ aff = SQLITE_AFF_TEXT; }else if( h==(('b'<<24)+('l'<<16)+('o'<<8)+'b') /* BLOB */ && (aff==SQLITE_AFF_NUMERIC || aff==SQLITE_AFF_REAL) ){ - aff = SQLITE_AFF_NONE; + aff = SQLITE_AFF_BLOB; if( zIn[0]=='(' ) zChar = zIn; #ifndef SQLITE_OMIT_FLOATING_POINT }else if( h==(('r'<<24)+('e'<<16)+('a'<<8)+'l') /* REAL */ @@ -85276,7 +100376,7 @@ SQLITE_PRIVATE char sqlite3AffinityType(const char *zIn, u8 *pszEst){ ** estimate is scaled so that the size of an integer is 1. */ if( pszEst ){ *pszEst = 1; /* default size is approx 4 bytes */ - if( aff<=SQLITE_AFF_NONE ){ + if( affpNewTable; - if( p==0 || NEVER(p->nCol<1) ) return; - pCol = &p->aCol[p->nCol-1]; - assert( pCol->zType==0 ); - pCol->zType = sqlite3NameFromToken(pParse->db, pType); - pCol->affinity = sqlite3AffinityType(pCol->zType, &pCol->szEst); -} - /* ** The expression is the default value for the most recently added column ** of the table currently under construction. @@ -85335,7 +100414,7 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse *pParse, ExprSpan *pSpan){ p = pParse->pNewTable; if( p!=0 ){ pCol = &(p->aCol[p->nCol-1]); - if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr) ){ + if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr, db->init.busy) ){ sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant", pCol->zName); }else{ @@ -85343,16 +100422,45 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse *pParse, ExprSpan *pSpan){ ** tokens that point to volatile memory. The 'span' of the expression ** is required by pragma table_info. */ + Expr x; sqlite3ExprDelete(db, pCol->pDflt); - pCol->pDflt = sqlite3ExprDup(db, pSpan->pExpr, EXPRDUP_REDUCE); - sqlite3DbFree(db, pCol->zDflt); - pCol->zDflt = sqlite3DbStrNDup(db, (char*)pSpan->zStart, - (int)(pSpan->zEnd - pSpan->zStart)); + memset(&x, 0, sizeof(x)); + x.op = TK_SPAN; + x.u.zToken = sqlite3DbStrNDup(db, (char*)pSpan->zStart, + (int)(pSpan->zEnd - pSpan->zStart)); + x.pLeft = pSpan->pExpr; + x.flags = EP_Skip; + pCol->pDflt = sqlite3ExprDup(db, &x, EXPRDUP_REDUCE); + sqlite3DbFree(db, x.u.zToken); } } sqlite3ExprDelete(db, pSpan->pExpr); } +/* +** Backwards Compatibility Hack: +** +** Historical versions of SQLite accepted strings as column names in +** indexes and PRIMARY KEY constraints and in UNIQUE constraints. Example: +** +** CREATE TABLE xyz(a,b,c,d,e,PRIMARY KEY('a'),UNIQUE('b','c' COLLATE trim) +** CREATE INDEX abc ON xyz('c','d' DESC,'e' COLLATE nocase DESC); +** +** This is goofy. But to preserve backwards compatibility we continue to +** accept it. This routine does the necessary conversion. It converts +** the expression given in its argument from a TK_STRING into a TK_ID +** if the expression is just a TK_STRING with an optional COLLATE clause. +** If the epxression is anything other than TK_STRING, the expression is +** unchanged. +*/ +static void sqlite3StringToId(Expr *p){ + if( p->op==TK_STRING ){ + p->op = TK_ID; + }else if( p->op==TK_COLLATE && p->pLeft->op==TK_STRING ){ + p->pLeft->op = TK_ID; + } +} + /* ** Designate the PRIMARY KEY for the table. pList is a list of names ** of columns that form the primary key. If pList is NULL, then the @@ -85379,10 +100487,10 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( int sortOrder /* SQLITE_SO_ASC or SQLITE_SO_DESC */ ){ Table *pTab = pParse->pNewTable; - char *zType = 0; + Column *pCol = 0; int iCol = -1, i; int nTerm; - if( pTab==0 || IN_DECLARE_VTAB ) goto primary_key_exit; + if( pTab==0 ) goto primary_key_exit; if( pTab->tabFlags & TF_HasPrimaryKey ){ sqlite3ErrorMsg(pParse, "table \"%s\" has more than one primary key", pTab->zName); @@ -85391,24 +100499,31 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( pTab->tabFlags |= TF_HasPrimaryKey; if( pList==0 ){ iCol = pTab->nCol - 1; - pTab->aCol[iCol].colFlags |= COLFLAG_PRIMKEY; - zType = pTab->aCol[iCol].zType; + pCol = &pTab->aCol[iCol]; + pCol->colFlags |= COLFLAG_PRIMKEY; nTerm = 1; }else{ nTerm = pList->nExpr; for(i=0; inCol; iCol++){ - if( sqlite3StrICmp(pList->a[i].zName, pTab->aCol[iCol].zName)==0 ){ - pTab->aCol[iCol].colFlags |= COLFLAG_PRIMKEY; - zType = pTab->aCol[iCol].zType; - break; + Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[i].pExpr); + assert( pCExpr!=0 ); + sqlite3StringToId(pCExpr); + if( pCExpr->op==TK_ID ){ + const char *zCName = pCExpr->u.zToken; + for(iCol=0; iColnCol; iCol++){ + if( sqlite3StrICmp(zCName, pTab->aCol[iCol].zName)==0 ){ + pCol = &pTab->aCol[iCol]; + pCol->colFlags |= COLFLAG_PRIMKEY; + break; + } } } } } if( nTerm==1 - && zType && sqlite3StrICmp(zType, "INTEGER")==0 - && sortOrder==SQLITE_SO_ASC + && pCol + && sqlite3StrICmp(sqlite3ColumnType(pCol,""), "INTEGER")==0 + && sortOrder!=SQLITE_SO_DESC ){ pTab->iPKey = iCol; pTab->keyConf = (u8)onError; @@ -85421,15 +100536,8 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey( "INTEGER PRIMARY KEY"); #endif }else{ - Vdbe *v = pParse->pVdbe; - Index *p; - if( v ) pParse->addrSkipPK = sqlite3VdbeAddOp0(v, OP_Noop); - p = sqlite3CreateIndex(pParse, 0, 0, 0, pList, onError, 0, - 0, sortOrder, 0); - if( p ){ - p->autoIndex = 2; - if( v ) sqlite3VdbeJumpHere(v, pParse->addrSkipPK); - } + sqlite3CreateIndex(pParse, 0, 0, 0, pList, onError, 0, + 0, sortOrder, 0, SQLITE_IDXTYPE_PRIMARYKEY); pList = 0; } @@ -85447,7 +100555,10 @@ SQLITE_PRIVATE void sqlite3AddCheckConstraint( ){ #ifndef SQLITE_OMIT_CHECK Table *pTab = pParse->pNewTable; - if( pTab && !IN_DECLARE_VTAB ){ + sqlite3 *db = pParse->db; + if( pTab && !IN_DECLARE_VTAB + && !sqlite3BtreeIsReadonly(db->aDb[db->init.iDb].pBt) + ){ pTab->pCheck = sqlite3ExprListAppend(pParse, pTab->pCheck, pCheckExpr); if( pParse->constraintName.n ){ sqlite3ExprListSetName(pParse, pTab->pCheck, &pParse->constraintName, 1); @@ -85545,15 +100656,16 @@ SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){ ** set back to prior value. But schema changes are infrequent ** and the probability of hitting the same cookie value is only ** 1 chance in 2^32. So we're safe enough. +** +** IMPLEMENTATION-OF: R-34230-56049 SQLite automatically increments +** the schema-version whenever the schema changes. */ SQLITE_PRIVATE void sqlite3ChangeCookie(Parse *pParse, int iDb){ - int r1 = sqlite3GetTempReg(pParse); sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - sqlite3VdbeAddOp2(v, OP_Integer, db->aDb[iDb].pSchema->schema_cookie+1, r1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, r1); - sqlite3ReleaseTempReg(pParse, r1); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, + db->aDb[iDb].pSchema->schema_cookie+1); } /* @@ -85635,7 +100747,7 @@ static char *createTableStmt(sqlite3 *db, Table *p){ n += 35 + 6*p->nCol; zStmt = sqlite3DbMallocRaw(0, n); if( zStmt==0 ){ - db->mallocFailed = 1; + sqlite3OomFault(db); return 0; } sqlite3_snprintf(n, zStmt, "CREATE TABLE "); @@ -85644,8 +100756,8 @@ static char *createTableStmt(sqlite3 *db, Table *p){ zStmt[k++] = '('; for(pCol=p->aCol, i=0; inCol; i++, pCol++){ static const char * const azType[] = { + /* SQLITE_AFF_BLOB */ "", /* SQLITE_AFF_TEXT */ " TEXT", - /* SQLITE_AFF_NONE */ "", /* SQLITE_AFF_NUMERIC */ " NUM", /* SQLITE_AFF_INTEGER */ " INT", /* SQLITE_AFF_REAL */ " REAL" @@ -85657,17 +100769,17 @@ static char *createTableStmt(sqlite3 *db, Table *p){ k += sqlite3Strlen30(&zStmt[k]); zSep = zSep2; identPut(zStmt, &k, pCol->zName); - assert( pCol->affinity-SQLITE_AFF_TEXT >= 0 ); - assert( pCol->affinity-SQLITE_AFF_TEXT < ArraySize(azType) ); + assert( pCol->affinity-SQLITE_AFF_BLOB >= 0 ); + assert( pCol->affinity-SQLITE_AFF_BLOB < ArraySize(azType) ); + testcase( pCol->affinity==SQLITE_AFF_BLOB ); testcase( pCol->affinity==SQLITE_AFF_TEXT ); - testcase( pCol->affinity==SQLITE_AFF_NONE ); testcase( pCol->affinity==SQLITE_AFF_NUMERIC ); testcase( pCol->affinity==SQLITE_AFF_INTEGER ); testcase( pCol->affinity==SQLITE_AFF_REAL ); - zType = azType[pCol->affinity - SQLITE_AFF_TEXT]; + zType = azType[pCol->affinity - SQLITE_AFF_BLOB]; len = sqlite3Strlen30(zType); - assert( pCol->affinity==SQLITE_AFF_NONE + assert( pCol->affinity==SQLITE_AFF_BLOB || pCol->affinity==sqlite3AffinityType(zType, 0) ); memcpy(&zStmt[k], zType, len); k += len; @@ -85688,9 +100800,9 @@ static int resizeIndexObject(sqlite3 *db, Index *pIdx, int N){ assert( pIdx->isResized==0 ); nByte = (sizeof(char*) + sizeof(i16) + 1)*N; zExtra = sqlite3DbMallocZero(db, nByte); - if( zExtra==0 ) return SQLITE_NOMEM; + if( zExtra==0 ) return SQLITE_NOMEM_BKPT; memcpy(zExtra, pIdx->azColl, sizeof(char*)*pIdx->nColumn); - pIdx->azColl = (char**)zExtra; + pIdx->azColl = (const char**)zExtra; zExtra += sizeof(char*)*N; memcpy(zExtra, pIdx->aiColumn, sizeof(i16)*pIdx->nColumn); pIdx->aiColumn = (i16*)zExtra; @@ -85745,21 +100857,23 @@ static int hasColumn(const i16 *aiCol, int nCol, int x){ ** are appropriate for a WITHOUT ROWID table instead of a rowid table. ** Changes include: ** -** (1) Convert the OP_CreateTable into an OP_CreateIndex. There is +** (1) Set all columns of the PRIMARY KEY schema object to be NOT NULL. +** (2) Convert the OP_CreateTable into an OP_CreateIndex. There is ** no rowid btree for a WITHOUT ROWID. Instead, the canonical ** data storage is a covering index btree. -** (2) Bypass the creation of the sqlite_master table entry -** for the PRIMARY KEY as the the primary key index is now +** (3) Bypass the creation of the sqlite_master table entry +** for the PRIMARY KEY as the primary key index is now ** identified by the sqlite_master table entry of the table itself. -** (3) Set the Index.tnum of the PRIMARY KEY Index object in the +** (4) Set the Index.tnum of the PRIMARY KEY Index object in the ** schema to the rootpage from the main table. -** (4) Set all columns of the PRIMARY KEY schema object to be NOT NULL. ** (5) Add all table columns to the PRIMARY KEY Index object ** so that the PRIMARY KEY is a covering index. The surplus ** columns are part of KeyInfo.nXField and are not used for ** sorting or lookup or uniqueness checks. ** (6) Replace the rowid tail on all automatically generated UNIQUE ** indices with the PRIMARY KEY columns. +** +** For virtual tables, only (1) is performed. */ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ Index *pIdx; @@ -85769,21 +100883,27 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ sqlite3 *db = pParse->db; Vdbe *v = pParse->pVdbe; + /* Mark every PRIMARY KEY column as NOT NULL (except for imposter tables) + */ + if( !db->init.imposterTable ){ + for(i=0; inCol; i++){ + if( (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0 ){ + pTab->aCol[i].notNull = OE_Abort; + } + } + } + + /* The remaining transformations only apply to b-tree tables, not to + ** virtual tables */ + if( IN_DECLARE_VTAB ) return; + /* Convert the OP_CreateTable opcode that would normally create the - ** root-page for the table into a OP_CreateIndex opcode. The index + ** root-page for the table into an OP_CreateIndex opcode. The index ** created will become the PRIMARY KEY index. */ if( pParse->addrCrTab ){ assert( v ); - sqlite3VdbeGetOp(v, pParse->addrCrTab)->opcode = OP_CreateIndex; - } - - /* Bypass the creation of the PRIMARY KEY btree and the sqlite_master - ** table entry. - */ - if( pParse->addrSkipPK ){ - assert( v ); - sqlite3VdbeGetOp(v, pParse->addrSkipPK)->opcode = OP_Goto; + sqlite3VdbeChangeOpcode(v, pParse->addrCrTab, OP_CreateIndex); } /* Locate the PRIMARY KEY index. Or, if this table was originally @@ -85791,28 +100911,48 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ */ if( pTab->iPKey>=0 ){ ExprList *pList; - pList = sqlite3ExprListAppend(pParse, 0, 0); + Token ipkToken; + sqlite3TokenInit(&ipkToken, pTab->aCol[pTab->iPKey].zName); + pList = sqlite3ExprListAppend(pParse, 0, + sqlite3ExprAlloc(db, TK_ID, &ipkToken, 0)); if( pList==0 ) return; - pList->a[0].zName = sqlite3DbStrDup(pParse->db, - pTab->aCol[pTab->iPKey].zName); pList->a[0].sortOrder = pParse->iPkSortOrder; assert( pParse->pNewTable==pTab ); - pPk = sqlite3CreateIndex(pParse, 0, 0, 0, pList, pTab->keyConf, 0, 0, 0, 0); - if( pPk==0 ) return; - pPk->autoIndex = 2; + sqlite3CreateIndex(pParse, 0, 0, 0, pList, pTab->keyConf, 0, 0, 0, 0, + SQLITE_IDXTYPE_PRIMARYKEY); + if( db->mallocFailed ) return; + pPk = sqlite3PrimaryKeyIndex(pTab); pTab->iPKey = -1; }else{ pPk = sqlite3PrimaryKeyIndex(pTab); - } - pPk->isCovering = 1; - assert( pPk!=0 ); - nPk = pPk->nKeyCol; - /* Make sure every column of the PRIMARY KEY is NOT NULL */ - for(i=0; iaCol[pPk->aiColumn[i]].notNull = 1; + /* Bypass the creation of the PRIMARY KEY btree and the sqlite_master + ** table entry. This is only required if currently generating VDBE + ** code for a CREATE TABLE (not when parsing one as part of reading + ** a database schema). */ + if( v ){ + assert( db->init.busy==0 ); + sqlite3VdbeChangeOpcode(v, pPk->tnum, OP_Goto); + } + + /* + ** Remove all redundant columns from the PRIMARY KEY. For example, change + ** "PRIMARY KEY(a,b,a,b,c,b,c,d)" into just "PRIMARY KEY(a,b,c,d)". Later + ** code assumes the PRIMARY KEY contains no repeated columns. + */ + for(i=j=1; inKeyCol; i++){ + if( hasColumn(pPk->aiColumn, j, pPk->aiColumn[i]) ){ + pPk->nColumn--; + }else{ + pPk->aiColumn[j++] = pPk->aiColumn[i]; + } + } + pPk->nKeyCol = j; } - pPk->uniqNotNull = 1; + assert( pPk!=0 ); + pPk->isCovering = 1; + if( !db->init.imposterTable ) pPk->uniqNotNull = 1; + nPk = pPk->nKeyCol; /* The root page of the PRIMARY KEY is the table root page */ pPk->tnum = pTab->tnum; @@ -85822,7 +100962,7 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ */ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ int n; - if( pIdx->autoIndex==2 ) continue; + if( IsPrimaryKeyIndex(pIdx) ) continue; for(i=n=0; iaiColumn, pIdx->nKeyCol, pPk->aiColumn[i]) ) n++; } @@ -85851,7 +100991,7 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){ if( !hasColumn(pPk->aiColumn, j, i) ){ assert( jnColumn ); pPk->aiColumn[j] = i; - pPk->azColl[j] = "BINARY"; + pPk->azColl[j] = sqlite3StrBINARY; j++; } } @@ -85894,9 +101034,10 @@ SQLITE_PRIVATE void sqlite3EndTable( int iDb; /* Database in which the table lives */ Index *pIdx; /* An implied index of the table */ - if( (pEnd==0 && pSelect==0) || db->mallocFailed ){ + if( pEnd==0 && pSelect==0 ){ return; } + assert( !db->mallocFailed ); p = pParse->pNewTable; if( p==0 ) return; @@ -85907,9 +101048,13 @@ SQLITE_PRIVATE void sqlite3EndTable( ** So do not write to the disk again. Extract the root page number ** for the table from the db->init.newTnum field. (The page number ** should have been put there by the sqliteOpenCb routine.) + ** + ** If the root page number is 1, that means this is the sqlite_master + ** table itself. So mark it read-only. */ if( db->init.busy ){ p->tnum = db->init.newTnum; + if( p->tnum==1 ) p->tabFlags |= TF_Readonly; } /* Special processing for WITHOUT ROWID Tables */ @@ -85922,7 +101067,7 @@ SQLITE_PRIVATE void sqlite3EndTable( if( (p->tabFlags & TF_HasPrimaryKey)==0 ){ sqlite3ErrorMsg(pParse, "PRIMARY KEY missing on table %s", p->zName); }else{ - p->tabFlags |= TF_WithoutRowid; + p->tabFlags |= TF_WithoutRowid | TF_NoVisibleRowid; convertToWithoutRowidTable(pParse, p); } } @@ -85990,26 +101135,46 @@ SQLITE_PRIVATE void sqlite3EndTable( ** be redundant. */ if( pSelect ){ - SelectDest dest; - Table *pSelTab; + SelectDest dest; /* Where the SELECT should store results */ + int regYield; /* Register holding co-routine entry-point */ + int addrTop; /* Top of the co-routine */ + int regRec; /* A record to be insert into the new table */ + int regRowid; /* Rowid of the next row to insert */ + int addrInsLoop; /* Top of the loop for inserting rows */ + Table *pSelTab; /* A table that describes the SELECT results */ + regYield = ++pParse->nMem; + regRec = ++pParse->nMem; + regRowid = ++pParse->nMem; assert(pParse->nTab==1); + sqlite3MayAbort(pParse); sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb); sqlite3VdbeChangeP5(v, OPFLAG_P2ISREG); pParse->nTab = 2; - sqlite3SelectDestInit(&dest, SRT_Table, 1); + addrTop = sqlite3VdbeCurrentAddr(v) + 1; + sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop); + sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield); sqlite3Select(pParse, pSelect, &dest); + sqlite3VdbeEndCoroutine(v, regYield); + sqlite3VdbeJumpHere(v, addrTop - 1); + if( pParse->nErr ) return; + pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect); + if( pSelTab==0 ) return; + assert( p->aCol==0 ); + p->nCol = pSelTab->nCol; + p->aCol = pSelTab->aCol; + pSelTab->nCol = 0; + pSelTab->aCol = 0; + sqlite3DeleteTable(db, pSelTab); + addrInsLoop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_MakeRecord, dest.iSdst, dest.nSdst, regRec); + sqlite3TableAffinity(v, p, 0); + sqlite3VdbeAddOp2(v, OP_NewRowid, 1, regRowid); + sqlite3VdbeAddOp3(v, OP_Insert, 1, regRec, regRowid); + sqlite3VdbeGoto(v, addrInsLoop); + sqlite3VdbeJumpHere(v, addrInsLoop); sqlite3VdbeAddOp1(v, OP_Close, 1); - if( pParse->nErr==0 ){ - pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect); - if( pSelTab==0 ) return; - assert( p->aCol==0 ); - p->nCol = pSelTab->nCol; - p->aCol = pSelTab->aCol; - pSelTab->nCol = 0; - pSelTab->aCol = 0; - sqlite3DeleteTable(db, pSelTab); - } } /* Compute the complete text of the CREATE statement */ @@ -86032,7 +101197,7 @@ SQLITE_PRIVATE void sqlite3EndTable( "UPDATE %Q.%s " "SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q " "WHERE rowid=#%d", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), + db->aDb[iDb].zDbSName, MASTER_NAME, zType, p->zName, p->zName, @@ -86047,13 +101212,13 @@ SQLITE_PRIVATE void sqlite3EndTable( /* Check to see if we need to create an sqlite_sequence table for ** keeping track of autoincrement keys. */ - if( p->tabFlags & TF_Autoincrement ){ + if( (p->tabFlags & TF_Autoincrement)!=0 ){ Db *pDb = &db->aDb[iDb]; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( pDb->pSchema->pSeqTab==0 ){ sqlite3NestedParse(pParse, "CREATE TABLE %Q.sqlite_sequence(name,seq)", - pDb->zName + pDb->zDbSName ); } } @@ -86071,11 +101236,10 @@ SQLITE_PRIVATE void sqlite3EndTable( Table *pOld; Schema *pSchema = p->pSchema; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName, - sqlite3Strlen30(p->zName),p); + pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName, p); if( pOld ){ assert( p==pOld ); /* Malloc must have failed inside HashInsert() */ - db->mallocFailed = 1; + sqlite3OomFault(db); return; } pParse->pNewTable = 0; @@ -86105,6 +101269,7 @@ SQLITE_PRIVATE void sqlite3CreateView( Token *pBegin, /* The CREATE token that begins the statement */ Token *pName1, /* The token that holds the name of the view */ Token *pName2, /* The token that holds the name of the view */ + ExprList *pCNames, /* Optional list of view column names */ Select *pSelect, /* A SELECT statement that will become the new view */ int isTemp, /* TRUE for a TEMPORARY view */ int noErr /* Suppress error messages if VIEW already exists */ @@ -86120,22 +101285,15 @@ SQLITE_PRIVATE void sqlite3CreateView( if( pParse->nVar>0 ){ sqlite3ErrorMsg(pParse, "parameters are not allowed in views"); - sqlite3SelectDelete(db, pSelect); - return; + goto create_view_fail; } sqlite3StartTable(pParse, pName1, pName2, isTemp, 1, 0, noErr); p = pParse->pNewTable; - if( p==0 || pParse->nErr ){ - sqlite3SelectDelete(db, pSelect); - return; - } + if( p==0 || pParse->nErr ) goto create_view_fail; sqlite3TwoPartName(pParse, pName1, pName2, &pName); iDb = sqlite3SchemaToIndex(db, p->pSchema); sqlite3FixInit(&sFix, pParse, iDb, "view", pName); - if( sqlite3FixSelect(&sFix, pSelect) ){ - sqlite3SelectDelete(db, pSelect); - return; - } + if( sqlite3FixSelect(&sFix, pSelect) ) goto create_view_fail; /* Make a copy of the entire SELECT statement that defines the view. ** This will force all the Expr.token.z values to be dynamically @@ -86143,30 +101301,31 @@ SQLITE_PRIVATE void sqlite3CreateView( ** they will persist after the current sqlite3_exec() call returns. */ p->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); - sqlite3SelectDelete(db, pSelect); - if( db->mallocFailed ){ - return; - } - if( !db->init.busy ){ - sqlite3ViewGetColumnNames(pParse, p); - } + p->pCheck = sqlite3ExprListDup(db, pCNames, EXPRDUP_REDUCE); + if( db->mallocFailed ) goto create_view_fail; /* Locate the end of the CREATE VIEW statement. Make sEnd point to ** the end. */ sEnd = pParse->sLastToken; - if( ALWAYS(sEnd.z[0]!=0) && sEnd.z[0]!=';' ){ + assert( sEnd.z[0]!=0 ); + if( sEnd.z[0]!=';' ){ sEnd.z += sEnd.n; } sEnd.n = 0; n = (int)(sEnd.z - pBegin->z); + assert( n>0 ); z = pBegin->z; - while( ALWAYS(n>0) && sqlite3Isspace(z[n-1]) ){ n--; } + while( sqlite3Isspace(z[n-1]) ){ n--; } sEnd.z = &z[n-1]; sEnd.n = 1; /* Use sqlite3EndTable() to add the view to the SQLITE_MASTER table */ sqlite3EndTable(pParse, 0, &sEnd, 0, 0); + +create_view_fail: + sqlite3SelectDelete(db, pSelect); + sqlite3ExprListDelete(db, pCNames); return; } #endif /* SQLITE_OMIT_VIEW */ @@ -86183,7 +101342,9 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ int nErr = 0; /* Number of errors encountered */ int n; /* Temporarily holds the number of cursors assigned */ sqlite3 *db = pParse->db; /* Database connection for malloc errors */ - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); +#ifndef SQLITE_OMIT_AUTHORIZATION + sqlite3_xauth xAuth; /* Saved xAuth pointer */ +#endif assert( pTable ); @@ -86231,11 +101392,10 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ assert( pTable->pSelect ); pSel = sqlite3SelectDup(db, pTable->pSelect, 0); if( pSel ){ - u8 enableLookaside = db->lookaside.bEnabled; n = pParse->nTab; sqlite3SrcListAssignCursors(pParse, pSel->pSrc); pTable->nCol = -1; - db->lookaside.bEnabled = 0; + db->lookaside.bDisable++; #ifndef SQLITE_OMIT_AUTHORIZATION xAuth = db->xAuth; db->xAuth = 0; @@ -86244,25 +101404,43 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ #else pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); #endif - db->lookaside.bEnabled = enableLookaside; pParse->nTab = n; - if( pSelTab ){ + if( pTable->pCheck ){ + /* CREATE VIEW name(arglist) AS ... + ** The names of the columns in the table are taken from + ** arglist which is stored in pTable->pCheck. The pCheck field + ** normally holds CHECK constraints on an ordinary table, but for + ** a VIEW it holds the list of column names. + */ + sqlite3ColumnsFromExprList(pParse, pTable->pCheck, + &pTable->nCol, &pTable->aCol); + if( db->mallocFailed==0 + && pParse->nErr==0 + && pTable->nCol==pSel->pEList->nExpr + ){ + sqlite3SelectAddColumnTypeAndCollation(pParse, pTable, pSel); + } + }else if( pSelTab ){ + /* CREATE VIEW name AS... without an argument list. Construct + ** the column names from the SELECT statement that defines the view. + */ assert( pTable->aCol==0 ); pTable->nCol = pSelTab->nCol; pTable->aCol = pSelTab->aCol; pSelTab->nCol = 0; pSelTab->aCol = 0; - sqlite3DeleteTable(db, pSelTab); assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) ); - pTable->pSchema->flags |= DB_UnresetViews; }else{ pTable->nCol = 0; nErr++; } + sqlite3DeleteTable(db, pSelTab); sqlite3SelectDelete(db, pSel); + db->lookaside.bDisable--; } else { nErr++; } + pTable->pSchema->schemaFlags |= DB_UnresetViews; #endif /* SQLITE_OMIT_VIEW */ return nErr; } @@ -86279,7 +101457,7 @@ static void sqliteViewResetAll(sqlite3 *db, int idx){ for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); if( pTab->pSelect ){ - sqliteDeleteColumnNames(db, pTab); + sqlite3DeleteColumnNames(db, pTab); pTab->aCol = 0; pTab->nCol = 0; } @@ -86341,6 +101519,7 @@ SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iT static void destroyRootPage(Parse *pParse, int iTable, int iDb){ Vdbe *v = sqlite3GetVdbe(pParse); int r1 = sqlite3GetTempReg(pParse); + assert( iTable>1 ); sqlite3VdbeAddOp3(v, OP_Destroy, iTable, r1, iDb); sqlite3MayAbort(pParse); #ifndef SQLITE_OMIT_AUTOVACUUM @@ -86355,7 +101534,7 @@ static void destroyRootPage(Parse *pParse, int iTable, int iDb){ */ sqlite3NestedParse(pParse, "UPDATE %Q.%s SET rootpage=%d WHERE #%d AND rootpage=#%d", - pParse->db->aDb[iDb].zName, SCHEMA_TABLE(iDb), iTable, r1, r1); + pParse->db->aDb[iDb].zDbSName, MASTER_NAME, iTable, r1, r1); #endif sqlite3ReleaseTempReg(pParse, r1); } @@ -86431,7 +101610,7 @@ static void sqlite3ClearStatTables( const char *zName /* Name of index or table */ ){ int i; - const char *zDbName = pParse->db->aDb[iDb].zName; + const char *zDbName = pParse->db->aDb[iDb].zDbSName; for(i=1; i<=4; i++){ char zTab[24]; sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i); @@ -86484,7 +101663,7 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in if( pTab->tabFlags & TF_Autoincrement ){ sqlite3NestedParse(pParse, "DELETE FROM %Q.sqlite_sequence WHERE name=%Q", - pDb->zName, pTab->zName + pDb->zDbSName, pTab->zName ); } #endif @@ -86498,7 +101677,7 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in */ sqlite3NestedParse(pParse, "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'", - pDb->zName, SCHEMA_TABLE(iDb), pTab->zName); + pDb->zDbSName, MASTER_NAME, pTab->zName); if( !isView && !IsVirtual(pTab) ){ destroyTable(pParse, pTab); } @@ -86529,7 +101708,9 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, } assert( pParse->nErr==0 ); assert( pName->nSrc==1 ); + if( sqlite3ReadSchema(pParse) ) goto exit_drop_table; if( noErr ) db->suppressErr++; + assert( isView==0 || isView==LOCATE_VIEW ); pTab = sqlite3LocateTableItem(pParse, isView, &pName->a[0]); if( noErr ) db->suppressErr--; @@ -86550,7 +101731,7 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, { int code; const char *zTab = SCHEMA_TABLE(iDb); - const char *zDb = db->aDb[iDb].zName; + const char *zDb = db->aDb[iDb].zDbSName; const char *zArg2 = 0; if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb)){ goto exit_drop_table; @@ -86722,10 +101903,10 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey( assert( sqlite3SchemaMutexHeld(db, 0, p->pSchema) ); pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash, - pFKey->zTo, sqlite3Strlen30(pFKey->zTo), (void *)pFKey + pFKey->zTo, (void *)pFKey ); if( pNextTo==pFKey ){ - db->mallocFailed = 1; + sqlite3OomFault(db); goto fk_end; } if( pNextTo ){ @@ -86785,13 +101966,13 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ int iPartIdxLabel; /* Jump to this label to skip a row */ Vdbe *v; /* Generate code into this virtual machine */ KeyInfo *pKey; /* KeyInfo for index */ - int regRecord; /* Register holding assemblied index record */ + int regRecord; /* Register holding assembled index record */ sqlite3 *db = pParse->db; /* The database connection */ int iDb = sqlite3SchemaToIndex(db, pIndex->pSchema); #ifndef SQLITE_OMIT_AUTHORIZATION if( sqlite3AuthCheck(pParse, SQLITE_REINDEX, pIndex->zName, 0, - db->aDb[iDb].zName ) ){ + db->aDb[iDb].zDbSName ) ){ return; } #endif @@ -86807,45 +101988,46 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ tnum = pIndex->tnum; } pKey = sqlite3KeyInfoOfIndex(pParse, pIndex); + assert( pKey!=0 || db->mallocFailed || pParse->nErr ); /* Open the sorter cursor if we are to use one. */ iSorter = pParse->nTab++; - sqlite3VdbeAddOp4(v, OP_SorterOpen, iSorter, 0, 0, (char*) + sqlite3VdbeAddOp4(v, OP_SorterOpen, iSorter, 0, pIndex->nKeyCol, (char*) sqlite3KeyInfoRef(pKey), P4_KEYINFO); /* Open the table. Loop through all rows of the table, inserting index ** records into the sorter. */ sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead); - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, 0); + addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, 0); VdbeCoverage(v); regRecord = sqlite3GetTempReg(pParse); sqlite3GenerateIndexKey(pParse,pIndex,iTab,regRecord,0,&iPartIdxLabel,0,0); sqlite3VdbeAddOp2(v, OP_SorterInsert, iSorter, regRecord); - sqlite3VdbeResolveLabel(v, iPartIdxLabel); - sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1); + sqlite3ResolvePartIdxLabel(pParse, iPartIdxLabel); + sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addr1); if( memRootPage<0 ) sqlite3VdbeAddOp2(v, OP_Clear, tnum, iDb); sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, tnum, iDb, (char *)pKey, P4_KEYINFO); sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR|((memRootPage>=0)?OPFLAG_P2ISREG:0)); - addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0); - assert( pKey!=0 || db->mallocFailed || pParse->nErr ); - if( pIndex->onError!=OE_None && pKey!=0 ){ + addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0); VdbeCoverage(v); + if( IsUniqueIndex(pIndex) ){ int j2 = sqlite3VdbeCurrentAddr(v) + 3; - sqlite3VdbeAddOp2(v, OP_Goto, 0, j2); + sqlite3VdbeGoto(v, j2); addr2 = sqlite3VdbeCurrentAddr(v); sqlite3VdbeAddOp4Int(v, OP_SorterCompare, iSorter, j2, regRecord, - pKey->nField - pIndex->nKeyCol); + pIndex->nKeyCol); VdbeCoverage(v); sqlite3UniqueConstraint(pParse, OE_Abort, pIndex); }else{ addr2 = sqlite3VdbeCurrentAddr(v); } - sqlite3VdbeAddOp2(v, OP_SorterData, iSorter, regRecord); - sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 1); + sqlite3VdbeAddOp3(v, OP_SorterData, iSorter, regRecord, iIdx); + sqlite3VdbeAddOp3(v, OP_Last, iIdx, 0, -1); + sqlite3VdbeAddOp2(v, OP_IdxInsert, iIdx, regRecord); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3VdbeAddOp2(v, OP_SorterNext, iSorter, addr2); + sqlite3VdbeAddOp2(v, OP_SorterNext, iSorter, addr2); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp1(v, OP_Close, iTab); @@ -86871,15 +102053,15 @@ SQLITE_PRIVATE Index *sqlite3AllocateIndexObject( nByte = ROUND8(sizeof(Index)) + /* Index structure */ ROUND8(sizeof(char*)*nCol) + /* Index.azColl */ - ROUND8(sizeof(tRowcnt)*(nCol+1) + /* Index.aiRowEst */ + ROUND8(sizeof(LogEst)*(nCol+1) + /* Index.aiRowLogEst */ sizeof(i16)*nCol + /* Index.aiColumn */ sizeof(u8)*nCol); /* Index.aSortOrder */ p = sqlite3DbMallocZero(db, nByte + nExtra); if( p ){ char *pExtra = ((char*)p)+ROUND8(sizeof(Index)); - p->azColl = (char**)pExtra; pExtra += ROUND8(sizeof(char*)*nCol); - p->aiRowEst = (tRowcnt*)pExtra; pExtra += sizeof(tRowcnt)*(nCol+1); - p->aiColumn = (i16*)pExtra; pExtra += sizeof(i16)*nCol; + p->azColl = (const char**)pExtra; pExtra += ROUND8(sizeof(char*)*nCol); + p->aiRowLogEst = (LogEst*)pExtra; pExtra += sizeof(LogEst)*(nCol+1); + p->aiColumn = (i16*)pExtra; pExtra += sizeof(i16)*nCol; p->aSortOrder = (u8*)pExtra; p->nColumn = nCol; p->nKeyCol = nCol - 1; @@ -86899,12 +102081,8 @@ SQLITE_PRIVATE Index *sqlite3AllocateIndexObject( ** pList is a list of columns to be indexed. pList will be NULL if this ** is a primary key or unique-constraint on the most recent column added ** to the table currently under construction. -** -** If the index is created successfully, return a pointer to the new Index -** structure. This is used by sqlite3AddPrimaryKey() to mark the index -** as the tables primary key (Index.autoIndex==2). */ -SQLITE_PRIVATE Index *sqlite3CreateIndex( +SQLITE_PRIVATE void sqlite3CreateIndex( Parse *pParse, /* All information about this parse */ Token *pName1, /* First part of index name. May be NULL */ Token *pName2, /* Second part of index name. May be NULL */ @@ -86914,9 +102092,9 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( Token *pStart, /* The CREATE token that begins this statement */ Expr *pPIWhere, /* WHERE clause for partial indices */ int sortOrder, /* Sort order of primary key when pList==NULL */ - int ifNotExist /* Omit error if index already exists */ + int ifNotExist, /* Omit error if index already exists */ + u8 idxType /* The index type */ ){ - Index *pRet = 0; /* Pointer to return */ Table *pTab = 0; /* Table to be indexed */ Index *pIndex = 0; /* The index to be created */ char *zName = 0; /* Name of the index */ @@ -86929,14 +102107,15 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( int iDb; /* Index of the database that is being written */ Token *pName = 0; /* Unqualified name of the index to create */ struct ExprList_item *pListItem; /* For looping over pList */ - const Column *pTabCol; /* A column in the table */ int nExtra = 0; /* Space allocated for zExtra[] */ int nExtraCol; /* Number of extra columns needed */ char *zExtra = 0; /* Extra space after the Index object */ Index *pPk = 0; /* PRIMARY KEY index for WITHOUT ROWID tables */ - assert( pParse->nErr==0 ); /* Never called with prior errors */ - if( db->mallocFailed || IN_DECLARE_VTAB ){ + if( db->mallocFailed || pParse->nErr>0 ){ + goto exit_create_index; + } + if( IN_DECLARE_VTAB && idxType!=SQLITE_IDXTYPE_PRIMARYKEY ){ goto exit_create_index; } if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ @@ -86998,6 +102177,10 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( assert( pTab!=0 ); assert( pParse->nErr==0 ); if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 + && db->init.busy==0 +#if SQLITE_USER_AUTHENTICATION + && sqlite3UserAuthTable(pTab->zName)==0 +#endif && sqlite3StrNICmp(&pTab->zName[7],"altertab_",9)!=0 ){ sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName); goto exit_create_index; @@ -87041,7 +102224,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( goto exit_create_index; } } - if( sqlite3FindIndex(db, zName, pDb->zName)!=0 ){ + if( sqlite3FindIndex(db, zName, pDb->zDbSName)!=0 ){ if( !ifNotExist ){ sqlite3ErrorMsg(pParse, "index %s already exists", zName); }else{ @@ -87058,13 +102241,20 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( if( zName==0 ){ goto exit_create_index; } + + /* Automatic index names generated from within sqlite3_declare_vtab() + ** must have names that are distinct from normal automatic index names. + ** The following statement converts "sqlite3_autoindex..." into + ** "sqlite3_butoindex..." in order to make the names distinct. + ** The "vtab_err.test" test demonstrates the need of this statement. */ + if( IN_DECLARE_VTAB ) zName[7]++; } /* Check for authorization to create an index. */ #ifndef SQLITE_OMIT_AUTHORIZATION { - const char *zDb = pDb->zName; + const char *zDb = pDb->zDbSName; if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iDb), 0, zDb) ){ goto exit_create_index; } @@ -87081,11 +102271,15 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( ** So create a fake list to simulate this. */ if( pList==0 ){ - pList = sqlite3ExprListAppend(pParse, 0, 0); + Token prevCol; + sqlite3TokenInit(&prevCol, pTab->aCol[pTab->nCol-1].zName); + pList = sqlite3ExprListAppend(pParse, 0, + sqlite3ExprAlloc(db, TK_ID, &prevCol, 0)); if( pList==0 ) goto exit_create_index; - pList->a[0].zName = sqlite3DbStrDup(pParse->db, - pTab->aCol[pTab->nCol-1].zName); - pList->a[0].sortOrder = (u8)sortOrder; + assert( pList->nExpr==1 ); + sqlite3ExprListSetSortOrder(pList, sortOrder); + }else{ + sqlite3ExprListCheckLength(pParse, pList, "index"); } /* Figure out how many bytes of space are required to store explicitly @@ -87093,8 +102287,8 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( */ for(i=0; inExpr; i++){ Expr *pExpr = pList->a[i].pExpr; - if( pExpr ){ - assert( pExpr->op==TK_COLLATE ); + assert( pExpr!=0 ); + if( pExpr->op==TK_COLLATE ){ nExtra += (1 + sqlite3Strlen30(pExpr->u.zToken)); } } @@ -87109,7 +102303,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( if( db->mallocFailed ){ goto exit_create_index; } - assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowEst) ); + assert( EIGHT_BYTE_ALIGNMENT(pIndex->aiRowLogEst) ); assert( EIGHT_BYTE_ALIGNMENT(pIndex->azColl) ); pIndex->zName = zExtra; zExtra += nName + 1; @@ -87117,7 +102311,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( pIndex->pTable = pTab; pIndex->onError = (u8)onError; pIndex->uniqNotNull = onError!=OE_None; - pIndex->autoIndex = (u8)(pName==0); + pIndex->idxType = idxType; pIndex->pSchema = db->aDb[iDb].pSchema; pIndex->nKeyCol = pList->nExpr; if( pPIWhere ){ @@ -87135,35 +102329,54 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( sortOrderMask = 0; /* Ignore DESC */ } - /* Scan the names of the columns of the table to be indexed and - ** load the column indices into the Index structure. Report an error - ** if any column is not found. + /* Analyze the list of expressions that form the terms of the index and + ** report any errors. In the common case where the expression is exactly + ** a table column, store that column in aiColumn[]. For general expressions, + ** populate pIndex->aColExpr and store XN_EXPR (-2) in aiColumn[]. ** - ** TODO: Add a test to make sure that the same column is not named - ** more than once within the same index. Only the first instance of - ** the column will ever be used by the optimizer. Note that using the - ** same column more than once cannot be an error because that would - ** break backwards compatibility - it needs to be a warning. + ** TODO: Issue a warning if two or more columns of the index are identical. + ** TODO: Issue a warning if the table primary key is used as part of the + ** index key. */ for(i=0, pListItem=pList->a; inExpr; i++, pListItem++){ - const char *zColName = pListItem->zName; - int requestedSortOrder; - char *zColl; /* Collation sequence name */ + Expr *pCExpr; /* The i-th index expression */ + int requestedSortOrder; /* ASC or DESC on the i-th expression */ + const char *zColl; /* Collation sequence name */ - for(j=0, pTabCol=pTab->aCol; jnCol; j++, pTabCol++){ - if( sqlite3StrICmp(zColName, pTabCol->zName)==0 ) break; + sqlite3StringToId(pListItem->pExpr); + sqlite3ResolveSelfReference(pParse, pTab, NC_IdxExpr, pListItem->pExpr, 0); + if( pParse->nErr ) goto exit_create_index; + pCExpr = sqlite3ExprSkipCollate(pListItem->pExpr); + if( pCExpr->op!=TK_COLUMN ){ + if( pTab==pParse->pNewTable ){ + sqlite3ErrorMsg(pParse, "expressions prohibited in PRIMARY KEY and " + "UNIQUE constraints"); + goto exit_create_index; + } + if( pIndex->aColExpr==0 ){ + ExprList *pCopy = sqlite3ExprListDup(db, pList, 0); + pIndex->aColExpr = pCopy; + if( !db->mallocFailed ){ + assert( pCopy!=0 ); + pListItem = &pCopy->a[i]; + } + } + j = XN_EXPR; + pIndex->aiColumn[i] = XN_EXPR; + pIndex->uniqNotNull = 0; + }else{ + j = pCExpr->iColumn; + assert( j<=0x7fff ); + if( j<0 ){ + j = pTab->iPKey; + }else if( pTab->aCol[j].notNull==0 ){ + pIndex->uniqNotNull = 0; + } + pIndex->aiColumn[i] = (i16)j; } - if( j>=pTab->nCol ){ - sqlite3ErrorMsg(pParse, "table %s has no column named %s", - pTab->zName, zColName); - pParse->checkSchema = 1; - goto exit_create_index; - } - assert( pTab->nCol<=0x7fff && j<=0x7fff ); - pIndex->aiColumn[i] = (i16)j; - if( pListItem->pExpr ){ + zColl = 0; + if( pListItem->pExpr->op==TK_COLLATE ){ int nColl; - assert( pListItem->pExpr->op==TK_COLLATE ); zColl = pListItem->pExpr->u.zToken; nColl = sqlite3Strlen30(zColl) + 1; assert( nExtra>=nColl ); @@ -87171,21 +102384,26 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( zColl = zExtra; zExtra += nColl; nExtra -= nColl; - }else{ + }else if( j>=0 ){ zColl = pTab->aCol[j].zColl; - if( !zColl ) zColl = "BINARY"; } + if( !zColl ) zColl = sqlite3StrBINARY; if( !db->init.busy && !sqlite3LocateCollSeq(pParse, zColl) ){ goto exit_create_index; } pIndex->azColl[i] = zColl; requestedSortOrder = pListItem->sortOrder & sortOrderMask; pIndex->aSortOrder[i] = (u8)requestedSortOrder; - if( pTab->aCol[j].notNull==0 ) pIndex->uniqNotNull = 0; } + + /* Append the table key to the end of the index. For WITHOUT ROWID + ** tables (when pPk!=0) this will be the declared PRIMARY KEY. For + ** normal tables (when pPk==0) this will be the rowid. + */ if( pPk ){ for(j=0; jnKeyCol; j++){ int x = pPk->aiColumn[j]; + assert( x>=0 ); if( hasColumn(pIndex->aiColumn, pIndex->nKeyCol, x) ){ pIndex->nColumn--; }else{ @@ -87197,12 +102415,26 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( } assert( i==pIndex->nColumn ); }else{ - pIndex->aiColumn[i] = -1; - pIndex->azColl[i] = "BINARY"; + pIndex->aiColumn[i] = XN_ROWID; + pIndex->azColl[i] = sqlite3StrBINARY; } sqlite3DefaultRowEst(pIndex); if( pParse->pNewTable==0 ) estimateIndexWidth(pIndex); + /* If this index contains every column of its table, then mark + ** it as a covering index */ + assert( HasRowid(pTab) + || pTab->iPKey<0 || sqlite3ColumnOfIndex(pIndex, pTab->iPKey)>=0 ); + if( pTblName!=0 && pIndex->nColumn>=pTab->nCol ){ + pIndex->isCovering = 1; + for(j=0; jnCol; j++){ + if( j==pTab->iPKey ) continue; + if( sqlite3ColumnOfIndex(pIndex,j)>=0 ) continue; + pIndex->isCovering = 0; + break; + } + } + if( pTab==pParse->pNewTable ){ /* This routine has been called to create an automatic index as a ** result of a PRIMARY KEY or UNIQUE clause on a column definition, or @@ -87228,18 +102460,19 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( Index *pIdx; for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ int k; - assert( pIdx->onError!=OE_None ); - assert( pIdx->autoIndex ); - assert( pIndex->onError!=OE_None ); + assert( IsUniqueIndex(pIdx) ); + assert( pIdx->idxType!=SQLITE_IDXTYPE_APPDEF ); + assert( IsUniqueIndex(pIndex) ); if( pIdx->nKeyCol!=pIndex->nKeyCol ) continue; for(k=0; knKeyCol; k++){ const char *z1; const char *z2; + assert( pIdx->aiColumn[k]>=0 ); if( pIdx->aiColumn[k]!=pIndex->aiColumn[k] ) break; z1 = pIdx->azColl[k]; z2 = pIndex->azColl[k]; - if( z1!=z2 && sqlite3StrICmp(z1, z2) ) break; + if( sqlite3StrICmp(z1, z2) ) break; } if( k==pIdx->nKeyCol ){ if( pIdx->onError!=pIndex->onError ){ @@ -87258,6 +102491,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( pIdx->onError = pIndex->onError; } } + if( idxType==SQLITE_IDXTYPE_PRIMARYKEY ) pIdx->idxType = idxType; goto exit_create_index; } } @@ -87266,15 +102500,16 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( /* Link the new Index structure to its table and to the other ** in-memory database structures. */ + assert( pParse->nErr==0 ); if( db->init.busy ){ Index *p; + assert( !IN_DECLARE_VTAB ); assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); p = sqlite3HashInsert(&pIndex->pSchema->idxHash, - pIndex->zName, sqlite3Strlen30(pIndex->zName), - pIndex); + pIndex->zName, pIndex); if( p ){ assert( p==pIndex ); /* Malloc must have failed */ - db->mallocFailed = 1; + sqlite3OomFault(db); goto exit_create_index; } db->flags |= SQLITE_InternChanges; @@ -87296,7 +102531,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( ** has just been created, it contains no data and the index initialization ** step can be skipped. */ - else if( pParse->nErr==0 && (HasRowid(pTab) || pTblName!=0) ){ + else if( HasRowid(pTab) || pTblName!=0 ){ Vdbe *v; char *zStmt; int iMem = ++pParse->nMem; @@ -87304,10 +102539,15 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( v = sqlite3GetVdbe(pParse); if( v==0 ) goto exit_create_index; - - /* Create the rootpage for the index - */ sqlite3BeginWriteOperation(pParse, 1, iDb); + + /* Create the rootpage for the index using CreateIndex. But before + ** doing so, code a Noop instruction and store its address in + ** Index.tnum. This is required in case this index is actually a + ** PRIMARY KEY and the table is actually a WITHOUT ROWID table. In + ** that case the convertToWithoutRowidTable() routine will replace + ** the Noop with a Goto to jump over the VDBE code generated below. */ + pIndex->tnum = sqlite3VdbeAddOp0(v, OP_Noop); sqlite3VdbeAddOp2(v, OP_CreateIndex, iDb, iMem); /* Gather the complete text of the CREATE INDEX statement into @@ -87329,7 +102569,7 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( */ sqlite3NestedParse(pParse, "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), + db->aDb[iDb].zDbSName, MASTER_NAME, pIndex->zName, pTab->zName, iMem, @@ -87345,8 +102585,10 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddParseSchemaOp(v, iDb, sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName)); - sqlite3VdbeAddOp1(v, OP_Expire, 0); + sqlite3VdbeAddOp0(v, OP_Expire); } + + sqlite3VdbeJumpHere(v, pIndex->tnum); } /* When adding an index to the list of indices for a table, make @@ -87368,7 +102610,6 @@ SQLITE_PRIVATE Index *sqlite3CreateIndex( pIndex->pNext = pOther->pNext; pOther->pNext = pIndex; } - pRet = pIndex; pIndex = 0; } @@ -87379,18 +102620,17 @@ exit_create_index: sqlite3ExprListDelete(db, pList); sqlite3SrcListDelete(db, pTblName); sqlite3DbFree(db, zName); - return pRet; } /* ** Fill the Index.aiRowEst[] array with default information - information ** to be used when we have not run the ANALYZE command. ** -** aiRowEst[0] is suppose to contain the number of elements in the index. +** aiRowEst[0] is supposed to contain the number of elements in the index. ** Since we do not know, guess 1 million. aiRowEst[1] is an estimate of the ** number of rows in the table that match any particular value of the ** first column of the index. aiRowEst[2] is an estimate of the number -** of rows that match any particular combiniation of the first 2 columns +** of rows that match any particular combination of the first 2 columns ** of the index. And so forth. It must always be the case that * ** aiRowEst[N]<=aiRowEst[N-1] @@ -87401,20 +102641,28 @@ exit_create_index: ** are based on typical values found in actual indices. */ SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){ - tRowcnt *a = pIdx->aiRowEst; + /* 10, 9, 8, 7, 6 */ + LogEst aVal[] = { 33, 32, 30, 28, 26 }; + LogEst *a = pIdx->aiRowLogEst; + int nCopy = MIN(ArraySize(aVal), pIdx->nKeyCol); int i; - tRowcnt n; - assert( a!=0 ); - a[0] = pIdx->pTable->nRowEst; - if( a[0]<10 ) a[0] = 10; - n = 10; - for(i=1; i<=pIdx->nKeyCol; i++){ - a[i] = n; - if( n>5 ) n--; - } - if( pIdx->onError!=OE_None ){ - a[pIdx->nKeyCol] = 1; + + /* Set the first entry (number of rows in the index) to the estimated + ** number of rows in the table, or half the number of rows in the table + ** for a partial index. But do not let the estimate drop below 10. */ + a[0] = pIdx->pTable->nRowLogEst; + if( pIdx->pPartIdxWhere!=0 ) a[0] -= 10; assert( 10==sqlite3LogEst(2) ); + if( a[0]<33 ) a[0] = 33; assert( 33==sqlite3LogEst(10) ); + + /* Estimate that a[1] is 10, a[2] is 9, a[3] is 8, a[4] is 7, a[5] is + ** 6 and each subsequent value (if any) is 5. */ + memcpy(&a[1], aVal, nCopy*sizeof(LogEst)); + for(i=nCopy+1; i<=pIdx->nKeyCol; i++){ + a[i] = 23; assert( 23==sqlite3LogEst(5) ); } + + assert( 0==sqlite3LogEst(1) ); + if( IsUniqueIndex(pIdx) ) a[pIdx->nKeyCol] = 0; } /* @@ -87445,7 +102693,7 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists pParse->checkSchema = 1; goto exit_drop_index; } - if( pIndex->autoIndex ){ + if( pIndex->idxType!=SQLITE_IDXTYPE_APPDEF ){ sqlite3ErrorMsg(pParse, "index associated with UNIQUE " "or PRIMARY KEY constraint cannot be dropped", 0); goto exit_drop_index; @@ -87455,7 +102703,7 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists { int code = SQLITE_DROP_INDEX; Table *pTab = pIndex->pTable; - const char *zDb = db->aDb[iDb].zName; + const char *zDb = db->aDb[iDb].zDbSName; const char *zTab = SCHEMA_TABLE(iDb); if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){ goto exit_drop_index; @@ -87473,7 +102721,7 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists sqlite3BeginWriteOperation(pParse, 1, iDb); sqlite3NestedParse(pParse, "DELETE FROM %Q.%s WHERE name=%Q AND type='index'", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName + db->aDb[iDb].zDbSName, MASTER_NAME, pIndex->zName ); sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName); sqlite3ChangeCookie(pParse, iDb); @@ -87614,9 +102862,9 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( assert( iStart<=pSrc->nSrc ); /* Allocate additional space if needed */ - if( pSrc->nSrc+nExtra>pSrc->nAlloc ){ + if( (u32)pSrc->nSrc+nExtra>pSrc->nAlloc ){ SrcList *pNew; - int nAlloc = pSrc->nSrc+nExtra; + int nAlloc = pSrc->nSrc*2+nExtra; int nGot; pNew = sqlite3DbRealloc(db, pSrc, sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) ); @@ -87626,7 +102874,7 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( } pSrc = pNew; nGot = (sqlite3DbMallocSize(db, pNew) - sizeof(*pSrc))/sizeof(pSrc->a[0])+1; - pSrc->nAlloc = (u8)nGot; + pSrc->nAlloc = nGot; } /* Move existing slots that come after the newly inserted slots @@ -87634,7 +102882,7 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge( for(i=pSrc->nSrc-1; i>=iStart; i--){ pSrc->a[i+nExtra] = pSrc->a[i]; } - pSrc->nSrc += (i8)nExtra; + pSrc->nSrc += nExtra; /* Zero the newly allocated slots */ memset(&pSrc->a[iStart], 0, sizeof(pSrc->a[0])*nExtra); @@ -87689,12 +102937,17 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListAppend( ){ struct SrcList_item *pItem; assert( pDatabase==0 || pTable!=0 ); /* Cannot have C without B */ + assert( db!=0 ); if( pList==0 ){ - pList = sqlite3DbMallocZero(db, sizeof(SrcList) ); + pList = sqlite3DbMallocRawNN(db, sizeof(SrcList) ); if( pList==0 ) return 0; pList->nAlloc = 1; + pList->nSrc = 1; + memset(&pList->a[0], 0, sizeof(pList->a[0])); + pList->a[0].iCursor = -1; + }else{ + pList = sqlite3SrcListEnlarge(db, pList, 1, pList->nSrc); } - pList = sqlite3SrcListEnlarge(db, pList, 1, pList->nSrc); if( db->mallocFailed ){ sqlite3SrcListDelete(db, pList); return 0; @@ -87742,7 +102995,8 @@ SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3 *db, SrcList *pList){ sqlite3DbFree(db, pItem->zDatabase); sqlite3DbFree(db, pItem->zName); sqlite3DbFree(db, pItem->zAlias); - sqlite3DbFree(db, pItem->zIndex); + if( pItem->fg.isIndexedBy ) sqlite3DbFree(db, pItem->u1.zIndexedBy); + if( pItem->fg.isTabFunc ) sqlite3ExprListDelete(db, pItem->u1.pFuncArg); sqlite3DeleteTable(db, pItem->pTab); sqlite3SelectDelete(db, pItem->pSelect); sqlite3ExprDelete(db, pItem->pOn); @@ -87758,7 +103012,7 @@ SQLITE_PRIVATE void sqlite3SrcListDelete(sqlite3 *db, SrcList *pList){ ** if this is the first term of the FROM clause. pTable and pDatabase ** are the name of the table and database named in the FROM clause term. ** pDatabase is NULL if the database name qualifier is missing - the -** usual case. If the term has a alias, then pAlias points to the +** usual case. If the term has an alias, then pAlias points to the ** alias token. If the term is a subquery, then pSubquery is the ** SELECT statement that the subquery encodes. The pTable and ** pDatabase parameters are NULL for subqueries. The pOn and pUsing @@ -87815,17 +103069,37 @@ SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pI assert( pIndexedBy!=0 ); if( p && ALWAYS(p->nSrc>0) ){ struct SrcList_item *pItem = &p->a[p->nSrc-1]; - assert( pItem->notIndexed==0 && pItem->zIndex==0 ); + assert( pItem->fg.notIndexed==0 ); + assert( pItem->fg.isIndexedBy==0 ); + assert( pItem->fg.isTabFunc==0 ); if( pIndexedBy->n==1 && !pIndexedBy->z ){ /* A "NOT INDEXED" clause was supplied. See parse.y ** construct "indexed_opt" for details. */ - pItem->notIndexed = 1; + pItem->fg.notIndexed = 1; }else{ - pItem->zIndex = sqlite3NameFromToken(pParse->db, pIndexedBy); + pItem->u1.zIndexedBy = sqlite3NameFromToken(pParse->db, pIndexedBy); + pItem->fg.isIndexedBy = (pItem->u1.zIndexedBy!=0); } } } +/* +** Add the list of function arguments to the SrcList entry for a +** table-valued-function. +*/ +SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse *pParse, SrcList *p, ExprList *pList){ + if( p ){ + struct SrcList_item *pItem = &p->a[p->nSrc-1]; + assert( pItem->fg.notIndexed==0 ); + assert( pItem->fg.isIndexedBy==0 ); + assert( pItem->fg.isTabFunc==0 ); + pItem->u1.pFuncArg = pList; + pItem->fg.isTabFunc = 1; + }else{ + sqlite3ExprListDelete(pParse->db, pList); + } +} + /* ** When building up a FROM clause in the parser, the join operator ** is initially attached to the left operand. But the code generator @@ -87844,16 +103118,15 @@ SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pI SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList *p){ if( p ){ int i; - assert( p->a || p->nSrc==0 ); for(i=p->nSrc-1; i>0; i--){ - p->a[i].jointype = p->a[i-1].jointype; + p->a[i].fg.jointype = p->a[i-1].fg.jointype; } - p->a[0].jointype = 0; + p->a[0].fg.jointype = 0; } } /* -** Begin a transaction +** Generate VDBE code for a BEGIN statement. */ SQLITE_PRIVATE void sqlite3BeginTransaction(Parse *pParse, int type){ sqlite3 *db; @@ -87863,7 +103136,6 @@ SQLITE_PRIVATE void sqlite3BeginTransaction(Parse *pParse, int type){ assert( pParse!=0 ); db = pParse->db; assert( db!=0 ); -/* if( db->aDb[0].pBt==0 ) return; */ if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "BEGIN", 0, 0) ){ return; } @@ -87875,11 +103147,11 @@ SQLITE_PRIVATE void sqlite3BeginTransaction(Parse *pParse, int type){ sqlite3VdbeUsesBtree(v, i); } } - sqlite3VdbeAddOp2(v, OP_AutoCommit, 0, 0); + sqlite3VdbeAddOp0(v, OP_AutoCommit); } /* -** Commit a transaction +** Generate VDBE code for a COMMIT statement. */ SQLITE_PRIVATE void sqlite3CommitTransaction(Parse *pParse){ Vdbe *v; @@ -87891,12 +103163,12 @@ SQLITE_PRIVATE void sqlite3CommitTransaction(Parse *pParse){ } v = sqlite3GetVdbe(pParse); if( v ){ - sqlite3VdbeAddOp2(v, OP_AutoCommit, 1, 0); + sqlite3VdbeAddOp1(v, OP_AutoCommit, 1); } } /* -** Rollback a transaction +** Generate VDBE code for a ROLLBACK statement. */ SQLITE_PRIVATE void sqlite3RollbackTransaction(Parse *pParse){ Vdbe *v; @@ -87958,7 +103230,7 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){ db->aDb[1].pBt = pBt; assert( db->aDb[1].pSchema ); if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){ - db->mallocFailed = 1; + sqlite3OomFault(db); return 1; } } @@ -87966,59 +103238,22 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){ } /* -** Generate VDBE code that will verify the schema cookie and start -** a read-transaction for all named database files. -** -** It is important that all schema cookies be verified and all -** read transactions be started before anything else happens in -** the VDBE program. But this routine can be called after much other -** code has been generated. So here is what we do: -** -** The first time this routine is called, we code an OP_Goto that -** will jump to a subroutine at the end of the program. Then we -** record every database that needs its schema verified in the -** pParse->cookieMask field. Later, after all other code has been -** generated, the subroutine that does the cookie verifications and -** starts the transactions will be coded and the OP_Goto P2 value -** will be made to point to that subroutine. The generation of the -** cookie verification subroutine code happens in sqlite3FinishCoding(). -** -** If iDb<0 then code the OP_Goto only - don't set flag to verify the -** schema on any databases. This can be used to position the OP_Goto -** early in the code, before we know if any database tables will be used. +** Record the fact that the schema cookie will need to be verified +** for database iDb. The code to actually verify the schema cookie +** will occur at the end of the top-level VDBE and will be generated +** later, by sqlite3FinishCoding(). */ SQLITE_PRIVATE void sqlite3CodeVerifySchema(Parse *pParse, int iDb){ Parse *pToplevel = sqlite3ParseToplevel(pParse); -#ifndef SQLITE_OMIT_TRIGGER - if( pToplevel!=pParse ){ - /* This branch is taken if a trigger is currently being coded. In this - ** case, set cookieGoto to a non-zero value to show that this function - ** has been called. This is used by the sqlite3ExprCodeConstants() - ** function. */ - pParse->cookieGoto = -1; - } -#endif - if( pToplevel->cookieGoto==0 ){ - Vdbe *v = sqlite3GetVdbe(pToplevel); - if( v==0 ) return; /* This only happens if there was a prior error */ - pToplevel->cookieGoto = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0)+1; - } - if( iDb>=0 ){ - sqlite3 *db = pToplevel->db; - yDbMask mask; - - assert( iDbnDb ); - assert( db->aDb[iDb].pBt!=0 || iDb==1 ); - assert( iDbcookieMask & mask)==0 ){ - pToplevel->cookieMask |= mask; - pToplevel->cookieValue[iDb] = db->aDb[iDb].pSchema->schema_cookie; - if( !OMIT_TEMPDB && iDb==1 ){ - sqlite3OpenTempDatabase(pToplevel); - } + assert( iDb>=0 && iDbdb->nDb ); + assert( pParse->db->aDb[iDb].pBt!=0 || iDb==1 ); + assert( iDbdb, iDb, 0) ); + if( DbMaskTest(pToplevel->cookieMask, iDb)==0 ){ + DbMaskSet(pToplevel->cookieMask, iDb); + if( !OMIT_TEMPDB && iDb==1 ){ + sqlite3OpenTempDatabase(pToplevel); } } } @@ -88032,7 +103267,7 @@ SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb) int i; for(i=0; inDb; i++){ Db *pDb = &db->aDb[i]; - if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zName)) ){ + if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zDbSName)) ){ sqlite3CodeVerifySchema(pParse, i); } } @@ -88054,7 +103289,7 @@ SQLITE_PRIVATE void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb) SQLITE_PRIVATE void sqlite3BeginWriteOperation(Parse *pParse, int setStatement, int iDb){ Parse *pToplevel = sqlite3ParseToplevel(pParse); sqlite3CodeVerifySchema(pParse, iDb); - pToplevel->writeMask |= ((yDbMask)1)<writeMask, iDb); pToplevel->isMultiWrite |= setStatement; } @@ -88110,7 +103345,7 @@ SQLITE_PRIVATE void sqlite3HaltConstraint( sqlite3MayAbort(pParse); } sqlite3VdbeAddOp4(v, OP_Halt, errCode, onError, 0, p4, p4type); - if( p5Errmsg ) sqlite3VdbeChangeP5(v, p5Errmsg); + sqlite3VdbeChangeP5(v, p5Errmsg); } /* @@ -88126,18 +103361,22 @@ SQLITE_PRIVATE void sqlite3UniqueConstraint( StrAccum errMsg; Table *pTab = pIdx->pTable; - sqlite3StrAccumInit(&errMsg, 0, 0, 200); - errMsg.db = pParse->db; - for(j=0; jnKeyCol; j++){ - char *zCol = pTab->aCol[pIdx->aiColumn[j]].zName; - if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2); - sqlite3StrAccumAppendAll(&errMsg, pTab->zName); - sqlite3StrAccumAppend(&errMsg, ".", 1); - sqlite3StrAccumAppendAll(&errMsg, zCol); + sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, 200); + if( pIdx->aColExpr ){ + sqlite3XPrintf(&errMsg, "index '%q'", pIdx->zName); + }else{ + for(j=0; jnKeyCol; j++){ + char *zCol; + assert( pIdx->aiColumn[j]>=0 ); + zCol = pTab->aCol[pIdx->aiColumn[j]].zName; + if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2); + sqlite3XPrintf(&errMsg, "%s.%s", pTab->zName, zCol); + } } zErr = sqlite3StrAccumFinish(&errMsg); sqlite3HaltConstraint(pParse, - (pIdx->autoIndex==2)?SQLITE_CONSTRAINT_PRIMARYKEY:SQLITE_CONSTRAINT_UNIQUE, + IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY + : SQLITE_CONSTRAINT_UNIQUE, onError, zErr, P4_DYNAMIC, P5_ConstraintUnique); } @@ -88275,7 +103514,7 @@ SQLITE_PRIVATE void sqlite3Reindex(Parse *pParse, Token *pName1, Token *pName2){ if( iDb<0 ) return; z = sqlite3NameFromToken(db, pObjName); if( z==0 ) return; - zDb = db->aDb[iDb].zName; + zDb = db->aDb[iDb].zDbSName; pTab = sqlite3FindTable(db, z, zDb); if( pTab ){ reindexTable(pParse, pTab, 0); @@ -88296,48 +103535,34 @@ SQLITE_PRIVATE void sqlite3Reindex(Parse *pParse, Token *pName1, Token *pName2){ /* ** Return a KeyInfo structure that is appropriate for the given Index. ** -** The KeyInfo structure for an index is cached in the Index object. -** So there might be multiple references to the returned pointer. The -** caller should not try to modify the KeyInfo object. -** ** The caller should invoke sqlite3KeyInfoUnref() on the returned object ** when it has finished using it. */ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoOfIndex(Parse *pParse, Index *pIdx){ + int i; + int nCol = pIdx->nColumn; + int nKey = pIdx->nKeyCol; + KeyInfo *pKey; if( pParse->nErr ) return 0; -#ifndef SQLITE_OMIT_SHARED_CACHE - if( pIdx->pKeyInfo && pIdx->pKeyInfo->db!=pParse->db ){ - sqlite3KeyInfoUnref(pIdx->pKeyInfo); - pIdx->pKeyInfo = 0; + if( pIdx->uniqNotNull ){ + pKey = sqlite3KeyInfoAlloc(pParse->db, nKey, nCol-nKey); + }else{ + pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0); } -#endif - if( pIdx->pKeyInfo==0 ){ - int i; - int nCol = pIdx->nColumn; - int nKey = pIdx->nKeyCol; - KeyInfo *pKey; - if( pIdx->uniqNotNull ){ - pKey = sqlite3KeyInfoAlloc(pParse->db, nKey, nCol-nKey); - }else{ - pKey = sqlite3KeyInfoAlloc(pParse->db, nCol, 0); + if( pKey ){ + assert( sqlite3KeyInfoIsWriteable(pKey) ); + for(i=0; iazColl[i]; + pKey->aColl[i] = zColl==sqlite3StrBINARY ? 0 : + sqlite3LocateCollSeq(pParse, zColl); + pKey->aSortOrder[i] = pIdx->aSortOrder[i]; } - if( pKey ){ - assert( sqlite3KeyInfoIsWriteable(pKey) ); - for(i=0; iazColl[i]; - assert( zColl!=0 ); - pKey->aColl[i] = strcmp(zColl,"BINARY")==0 ? 0 : - sqlite3LocateCollSeq(pParse, zColl); - pKey->aSortOrder[i] = pIdx->aSortOrder[i]; - } - if( pParse->nErr ){ - sqlite3KeyInfoUnref(pKey); - }else{ - pIdx->pKeyInfo = pKey; - } + if( pParse->nErr ){ + sqlite3KeyInfoUnref(pKey); + pKey = 0; } } - return sqlite3KeyInfoRef(pIdx->pKeyInfo); + return pKey; } #ifndef SQLITE_OMIT_CTE @@ -88374,10 +103599,9 @@ SQLITE_PRIVATE With *sqlite3WithAdd( }else{ pNew = sqlite3DbMallocZero(db, sizeof(*pWith)); } - assert( zName!=0 || pNew==0 ); - assert( db->mallocFailed==0 || pNew==0 ); + assert( (pNew!=0 && zName!=0) || db->mallocFailed ); - if( pNew==0 ){ + if( db->mallocFailed ){ sqlite3ExprListDelete(db, pArglist); sqlite3SelectDelete(db, pQuery); sqlite3DbFree(db, zName); @@ -88386,7 +103610,7 @@ SQLITE_PRIVATE With *sqlite3WithAdd( pNew->a[pNew->nCte].pSelect = pQuery; pNew->a[pNew->nCte].pCols = pArglist; pNew->a[pNew->nCte].zName = zName; - pNew->a[pNew->nCte].zErr = 0; + pNew->a[pNew->nCte].zCteErr = 0; pNew->nCte++; } @@ -88428,6 +103652,7 @@ SQLITE_PRIVATE void sqlite3WithDelete(sqlite3 *db, With *pWith){ ** of user defined functions and collation sequences. */ +/* #include "sqliteInt.h" */ /* ** Invoke the 'collation needed' callback to request a collation sequence @@ -88555,7 +103780,7 @@ SQLITE_PRIVATE int sqlite3CheckCollSeq(Parse *pParse, CollSeq *pColl){ ** ** Each pointer stored in the sqlite3.aCollSeq hash table contains an ** array of three CollSeq structures. The first is the collation sequence -** prefferred for UTF-8, the second UTF-16le, and the third UTF-16be. +** preferred for UTF-8, the second UTF-16le, and the third UTF-16be. ** ** Stored immediately after the three collation sequences is a copy of ** the collation sequence name. A pointer to this string is stored in @@ -88567,11 +103792,11 @@ static CollSeq *findCollSeqEntry( int create /* Create a new entry if true */ ){ CollSeq *pColl; - int nName = sqlite3Strlen30(zName); - pColl = sqlite3HashFind(&db->aCollSeq, zName, nName); + pColl = sqlite3HashFind(&db->aCollSeq, zName); if( 0==pColl && create ){ - pColl = sqlite3DbMallocZero(db, 3*sizeof(*pColl) + nName + 1 ); + int nName = sqlite3Strlen30(zName); + pColl = sqlite3DbMallocZero(db, 3*sizeof(*pColl) + nName + 1); if( pColl ){ CollSeq *pDel = 0; pColl[0].zName = (char*)&pColl[3]; @@ -88582,7 +103807,7 @@ static CollSeq *findCollSeqEntry( pColl[2].enc = SQLITE_UTF16BE; memcpy(pColl[0].zName, zName, nName); pColl[0].zName[nName] = 0; - pDel = sqlite3HashInsert(&db->aCollSeq, pColl[0].zName, nName, pColl); + pDel = sqlite3HashInsert(&db->aCollSeq, pColl[0].zName, pColl); /* If a malloc() failure occurred in sqlite3HashInsert(), it will ** return the pColl pointer to be deleted (because it wasn't added @@ -88590,7 +103815,7 @@ static CollSeq *findCollSeqEntry( */ assert( pDel==0 || pDel==pColl ); if( pDel!=0 ){ - db->mallocFailed = 1; + sqlite3OomFault(db); sqlite3DbFree(db, pDel); pColl = 0; } @@ -88656,8 +103881,8 @@ SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq( ** 5: UTF16 byte order conversion required - argument count matches exactly ** 6: Perfect match: encoding and argument count match exactly. ** -** If nArg==(-2) then any function with a non-null xStep or xFunc is -** a perfect match and any function with both xStep and xFunc NULL is +** If nArg==(-2) then any function with a non-null xSFunc is +** a perfect match and any function with xSFunc NULL is ** a non-match. */ #define FUNC_PERFECT_MATCH 6 /* The score for a perfect match */ @@ -88669,7 +103894,7 @@ static int matchQuality( int match; /* nArg of -2 is a special case */ - if( nArg==(-2) ) return (p->xFunc==0 && p->xStep==0) ? 0 : FUNC_PERFECT_MATCH; + if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH; /* Wrong number of arguments means "no match" */ if( p->nArg!=nArg && p->nArg>=0 ) return 0; @@ -88697,14 +103922,12 @@ static int matchQuality( ** a pointer to the matching FuncDef if found, or 0 if there is no match. */ static FuncDef *functionSearch( - FuncDefHash *pHash, /* Hash table to search */ int h, /* Hash of the name */ - const char *zFunc, /* Name of function */ - int nFunc /* Number of bytes in zFunc */ + const char *zFunc /* Name of function */ ){ FuncDef *p; - for(p=pHash->a[h]; p; p=p->pHash){ - if( sqlite3StrNICmp(p->zName, zFunc, nFunc)==0 && p->zName[nFunc]==0 ){ + for(p=sqlite3BuiltinFunctions.a[h]; p; p=p->u.pHash){ + if( sqlite3StrICmp(p->zName, zFunc)==0 ){ return p; } } @@ -88714,23 +103937,26 @@ static FuncDef *functionSearch( /* ** Insert a new FuncDef into a FuncDefHash hash table. */ -SQLITE_PRIVATE void sqlite3FuncDefInsert( - FuncDefHash *pHash, /* The hash table into which to insert */ - FuncDef *pDef /* The function definition to insert */ +SQLITE_PRIVATE void sqlite3InsertBuiltinFuncs( + FuncDef *aDef, /* List of global functions to be inserted */ + int nDef /* Length of the apDef[] list */ ){ - FuncDef *pOther; - int nName = sqlite3Strlen30(pDef->zName); - u8 c1 = (u8)pDef->zName[0]; - int h = (sqlite3UpperToLower[c1] + nName) % ArraySize(pHash->a); - pOther = functionSearch(pHash, h, pDef->zName, nName); - if( pOther ){ - assert( pOther!=pDef && pOther->pNext!=pDef ); - pDef->pNext = pOther->pNext; - pOther->pNext = pDef; - }else{ - pDef->pNext = 0; - pDef->pHash = pHash->a[h]; - pHash->a[h] = pDef; + int i; + for(i=0; ipNext!=&aDef[i] ); + aDef[i].pNext = pOther->pNext; + pOther->pNext = &aDef[i]; + }else{ + aDef[i].pNext = 0; + aDef[i].u.pHash = sqlite3BuiltinFunctions.a[h]; + sqlite3BuiltinFunctions.a[h] = &aDef[i]; + } } } @@ -88747,7 +103973,7 @@ SQLITE_PRIVATE void sqlite3FuncDefInsert( ** no matching function previously existed. ** ** If nArg is -2, then the first valid function found is returned. A -** function is valid if either xFunc or xStep is non-zero. The nArg==(-2) +** function is valid if xSFunc is non-zero. The nArg==(-2) ** case is used to see if zName is a valid function name for some number ** of arguments. If nArg is -2, then createFlag must be 0. ** @@ -88757,8 +103983,7 @@ SQLITE_PRIVATE void sqlite3FuncDefInsert( */ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( sqlite3 *db, /* An open database */ - const char *zName, /* Name of the function. Not null-terminated */ - int nName, /* Number of characters in the name */ + const char *zName, /* Name of the function. zero-terminated */ int nArg, /* Number of arguments. -1 means any number */ u8 enc, /* Preferred text encoding */ u8 createFlag /* Create new entry if true and does not otherwise exist */ @@ -88767,14 +103992,15 @@ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( FuncDef *pBest = 0; /* Best match found so far */ int bestScore = 0; /* Score of best match */ int h; /* Hash value */ + int nName; /* Length of the name */ assert( nArg>=(-2) ); assert( nArg>=(-1) || createFlag==0 ); - h = (sqlite3UpperToLower[(u8)zName[0]] + nName) % ArraySize(db->aFunc.a); + nName = sqlite3Strlen30(zName); /* First search for a match amongst the application-defined functions. */ - p = functionSearch(&db->aFunc, h, zName, nName); + p = (FuncDef*)sqlite3HashFind(&db->aFunc, zName); while( p ){ int score = matchQuality(p, nArg, enc); if( score>bestScore ){ @@ -88797,9 +104023,9 @@ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( ** So we must not search for built-ins when creating a new function. */ if( !createFlag && (pBest==0 || (db->flags & SQLITE_PreferBuiltin)!=0) ){ - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); bestScore = 0; - p = functionSearch(pHash, h, zName, nName); + h = (sqlite3UpperToLower[(u8)zName[0]] + nName) % SQLITE_FUNC_HASH_SZ; + p = functionSearch(h, zName); while( p ){ int score = matchQuality(p, nArg, enc); if( score>bestScore ){ @@ -88816,15 +104042,22 @@ SQLITE_PRIVATE FuncDef *sqlite3FindFunction( */ if( createFlag && bestScorezName = (char *)&pBest[1]; + FuncDef *pOther; + pBest->zName = (const char*)&pBest[1]; pBest->nArg = (u16)nArg; pBest->funcFlags = enc; - memcpy(pBest->zName, zName, nName); - pBest->zName[nName] = 0; - sqlite3FuncDefInsert(&db->aFunc, pBest); + memcpy((char*)&pBest[1], zName, nName+1); + pOther = (FuncDef*)sqlite3HashInsert(&db->aFunc, pBest->zName, pBest); + if( pOther==pBest ){ + sqlite3DbFree(db, pBest); + sqlite3OomFault(db); + return 0; + }else{ + pBest->pNext = pOther; + } } - if( pBest && (pBest->xStep || pBest->xFunc || createFlag) ){ + if( pBest && (pBest->xSFunc || createFlag) ){ return pBest; } return 0; @@ -88860,9 +104093,9 @@ SQLITE_PRIVATE void sqlite3SchemaClear(void *p){ sqlite3HashClear(&temp1); sqlite3HashClear(&pSchema->fkeyHash); pSchema->pSeqTab = 0; - if( pSchema->flags & DB_SchemaLoaded ){ + if( pSchema->schemaFlags & DB_SchemaLoaded ){ pSchema->iGeneration++; - pSchema->flags &= ~DB_SchemaLoaded; + pSchema->schemaFlags &= ~DB_SchemaLoaded; } } @@ -88878,7 +104111,7 @@ SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){ p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema)); } if( !p ){ - db->mallocFailed = 1; + sqlite3OomFault(db); }else if ( 0==p->file_format ){ sqlite3HashInit(&p->tblHash); sqlite3HashInit(&p->idxHash); @@ -88905,6 +104138,7 @@ SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){ ** This file contains C code routines that are called by the parser ** in order to generate code for DELETE FROM statements. */ +/* #include "sqliteInt.h" */ /* ** While a SrcList can in general represent multiple tables and subqueries @@ -88928,7 +104162,7 @@ SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){ sqlite3DeleteTable(pParse->db, pItem->pTab); pItem->pTab = pTab; if( pTab ){ - pTab->nRef++; + pTab->nTabRef++; } if( sqlite3IndexedByLookup(pParse, pItem) ){ pTab = 0; @@ -88982,28 +104216,24 @@ SQLITE_PRIVATE void sqlite3MaterializeView( Parse *pParse, /* Parsing context */ Table *pView, /* View definition */ Expr *pWhere, /* Optional WHERE clause to be added */ - int iCur /* Cursor number for ephemerial table */ + int iCur /* Cursor number for ephemeral table */ ){ SelectDest dest; Select *pSel; SrcList *pFrom; sqlite3 *db = pParse->db; int iDb = sqlite3SchemaToIndex(db, pView->pSchema); - pWhere = sqlite3ExprDup(db, pWhere, 0); pFrom = sqlite3SrcListAppend(db, 0, 0, 0); - if( pFrom ){ assert( pFrom->nSrc==1 ); pFrom->a[0].zName = sqlite3DbStrDup(db, pView->zName); - pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zName); + pFrom->a[0].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zDbSName); assert( pFrom->a[0].pOn==0 ); assert( pFrom->a[0].pUsing==0 ); } - - pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 0, 0, 0); - if( pSel ) pSel->selFlags |= SF_Materialize; - + pSel = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, + SF_IncludeHidden, 0, 0); sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur); sqlite3Select(pParse, pSel, &dest); sqlite3SelectDelete(db, pSel); @@ -89039,7 +104269,7 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( */ if( pOrderBy && (pLimit == 0) ) { sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType); - goto limit_where_cleanup_2; + goto limit_where_cleanup; } /* We only need to generate a select expression if there @@ -89060,17 +104290,17 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( ** ); */ - pSelectRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0, 0); - if( pSelectRowid == 0 ) goto limit_where_cleanup_2; + pSelectRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0); + if( pSelectRowid == 0 ) goto limit_where_cleanup; pEList = sqlite3ExprListAppend(pParse, 0, pSelectRowid); - if( pEList == 0 ) goto limit_where_cleanup_2; + if( pEList == 0 ) goto limit_where_cleanup; /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree ** and the SELECT subtree. */ pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0); if( pSelectSrc == 0 ) { sqlite3ExprListDelete(pParse->db, pEList); - goto limit_where_cleanup_2; + goto limit_where_cleanup; } /* generate the SELECT expression tree. */ @@ -89079,22 +104309,12 @@ SQLITE_PRIVATE Expr *sqlite3LimitWhere( if( pSelect == 0 ) return 0; /* now generate the new WHERE rowid IN clause for the DELETE/UDPATE */ - pWhereRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0, 0); - if( pWhereRowid == 0 ) goto limit_where_cleanup_1; - pInClause = sqlite3PExpr(pParse, TK_IN, pWhereRowid, 0, 0); - if( pInClause == 0 ) goto limit_where_cleanup_1; - - pInClause->x.pSelect = pSelect; - pInClause->flags |= EP_xIsSelect; - sqlite3ExprSetHeight(pParse, pInClause); + pWhereRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0); + pInClause = pWhereRowid ? sqlite3PExpr(pParse, TK_IN, pWhereRowid, 0) : 0; + sqlite3PExprAddSelect(pParse, pInClause, pSelect); return pInClause; - /* something went wrong. clean up anything allocated. */ -limit_where_cleanup_1: - sqlite3SelectDelete(pParse->db, pSelect); - return 0; - -limit_where_cleanup_2: +limit_where_cleanup: sqlite3ExprDelete(pParse->db, pWhere); sqlite3ExprListDelete(pParse->db, pOrderBy); sqlite3ExprDelete(pParse->db, pLimit); @@ -89118,13 +104338,12 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( ){ Vdbe *v; /* The virtual database engine */ Table *pTab; /* The table from which records will be deleted */ - const char *zDb; /* Name of database holding pTab */ int i; /* Loop counter */ WhereInfo *pWInfo; /* Information about the WHERE clause */ Index *pIdx; /* For looping over indices of the table */ int iTabCur; /* Cursor number for the table */ - int iDataCur; /* VDBE cursor for the canonical data source */ - int iIdxCur; /* Cursor number of the first index */ + int iDataCur = 0; /* VDBE cursor for the canonical data source */ + int iIdxCur = 0; /* Cursor number of the first index */ int nIdx; /* Number of indices */ sqlite3 *db; /* Main database structure */ AuthContext sContext; /* Authorization context */ @@ -89132,7 +104351,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( int iDb; /* Database number */ int memCnt = -1; /* Memory cell used for change counting */ int rcauth; /* Value returned by authorization callback */ - int okOnePass; /* True for one-pass algorithm without the FIFO */ + int eOnePass; /* ONEPASS_OFF or _SINGLE or _MULTI */ int aiCurOnePass[2]; /* The write cursors opened by WHERE_ONEPASS */ u8 *aToOpen = 0; /* Open cursor iTabCur+j if aToOpen[j] is true */ Index *pPk; /* The PRIMARY KEY index on the table */ @@ -89144,8 +104363,9 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( int iRowSet = 0; /* Register for rowset of rows to delete */ int addrBypass = 0; /* Address of jump over the delete logic */ int addrLoop = 0; /* Top of the delete loop */ - int addrDelete = 0; /* Jump directly to the delete logic */ - int addrEphOpen = 0; /* Instruction to open the Ephermeral table */ + int addrEphOpen = 0; /* Instruction to open the Ephemeral table */ + int bComplex; /* True if there are triggers or FKs or + ** subqueries in the WHERE clause */ #ifndef SQLITE_OMIT_TRIGGER int isView; /* True if attempting to delete from a view */ @@ -89173,6 +104393,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( #ifndef SQLITE_OMIT_TRIGGER pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); isView = pTab->pSelect!=0; + bComplex = pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0); #else # define pTrigger 0 # define isView 0 @@ -89193,8 +104414,8 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( } iDb = sqlite3SchemaToIndex(db, pTab->pSchema); assert( iDbnDb ); - zDb = db->aDb[iDb].zName; - rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb); + rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, + db->aDb[iDb].zDbSName); assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE ); if( rcauth==SQLITE_DENY ){ goto delete_from_cleanup; @@ -89225,7 +104446,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( sqlite3BeginWriteOperation(pParse, 1, iDb); /* If we are trying to delete from a view, realize that view into - ** a ephemeral table. + ** an ephemeral table. */ #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) if( isView ){ @@ -89256,8 +104477,13 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( ** It is easier just to erase the whole table. Prior to version 3.6.5, ** this optimization caused the row change count (the value returned by ** API function sqlite3_count_changes) to be set incorrectly. */ - if( rcauth==SQLITE_OK && pWhere==0 && !pTrigger && !IsVirtual(pTab) - && 0==sqlite3FkRequired(pParse, pTab, 0, 0) + if( rcauth==SQLITE_OK + && pWhere==0 + && !bComplex + && !IsVirtual(pTab) +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + && db->xPreUpdateCallback==0 +#endif ){ assert( !isView ); sqlite3TableLock(pParse, iDb, pTab->tnum, 1, pTab->zName); @@ -89272,6 +104498,9 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( }else #endif /* SQLITE_OMIT_TRUNCATE_OPTIMIZATION */ { + u16 wcf = WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK|WHERE_SEEK_TABLE; + if( sNC.ncFlags & NC_VarSelect ) bComplex = 1; + wcf |= (bComplex ? 0 : WHERE_ONEPASS_MULTIROW); if( HasRowid(pTab) ){ /* For a rowid table, initialize the RowSet to an empty set */ pPk = 0; @@ -89279,7 +104508,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( iRowSet = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Null, 0, iRowSet); }else{ - /* For a WITHOUT ROWID table, create an ephermeral table used to + /* For a WITHOUT ROWID table, create an ephemeral table used to ** hold all primary keys for rows to be deleted. */ pPk = sqlite3PrimaryKeyIndex(pTab); assert( pPk!=0 ); @@ -89292,13 +104521,18 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( } /* Construct a query to find the rowid or primary key for every row - ** to be deleted, based on the WHERE clause. + ** to be deleted, based on the WHERE clause. Set variable eOnePass + ** to indicate the strategy used to implement this delete: + ** + ** ONEPASS_OFF: Two-pass approach - use a FIFO for rowids/PK values. + ** ONEPASS_SINGLE: One-pass approach - at most one row deleted. + ** ONEPASS_MULTI: One-pass approach - any number of rows may be deleted. */ - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, - WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK, - iTabCur+1); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, wcf, iTabCur+1); if( pWInfo==0 ) goto delete_from_cleanup; - okOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + assert( IsVirtual(pTab)==0 || eOnePass!=ONEPASS_MULTI ); + assert( IsVirtual(pTab) || bComplex || eOnePass!=ONEPASS_OFF ); /* Keep track of the number of rows to be deleted */ if( db->flags & SQLITE_CountRows ){ @@ -89308,6 +104542,7 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( /* Extract the rowid or primary key for the current row */ if( pPk ){ for(i=0; iaiColumn[i]>=0 ); sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, pPk->aiColumn[i], iPk+i); } @@ -89318,13 +104553,12 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( if( iKey>pParse->nMem ) pParse->nMem = iKey; } - if( okOnePass ){ - /* For ONEPASS, no need to store the rowid/primary-key. There is only + if( eOnePass!=ONEPASS_OFF ){ + /* For ONEPASS, no need to store the rowid/primary-key. There is only ** one, so just keep it in its register(s) and fall through to the - ** delete code. - */ + ** delete code. */ nKey = nPk; /* OP_Found will use an unpacked key */ - aToOpen = sqlite3DbMallocRaw(db, nIdx+2); + aToOpen = sqlite3DbMallocRawNN(db, nIdx+2); if( aToOpen==0 ){ sqlite3WhereEnd(pWInfo); goto delete_from_cleanup; @@ -89334,27 +104568,27 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iTabCur] = 0; if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iTabCur] = 0; if( addrEphOpen ) sqlite3VdbeChangeToNoop(v, addrEphOpen); - addrDelete = sqlite3VdbeAddOp0(v, OP_Goto); /* Jump to DELETE logic */ - }else if( pPk ){ - /* Construct a composite key for the row to be deleted and remember it */ - iKey = ++pParse->nMem; - nKey = 0; /* Zero tells OP_Found to use a composite key */ - sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, iKey, - sqlite3IndexAffinityStr(v, pPk), P4_TRANSIENT); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iEphCur, iKey); }else{ - /* Get the rowid of the row to be deleted and remember it in the RowSet */ - nKey = 1; /* OP_Seek always uses a single rowid */ - sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, iKey); + if( pPk ){ + /* Add the PK key for this row to the temporary table */ + iKey = ++pParse->nMem; + nKey = 0; /* Zero tells OP_Found to use a composite key */ + sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, iKey, + sqlite3IndexAffinityStr(pParse->db, pPk), nPk); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEphCur, iKey, iPk, nPk); + }else{ + /* Add the rowid of the row to be deleted to the RowSet */ + nKey = 1; /* OP_Seek always uses a single rowid */ + sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, iKey); + } } - /* End of the WHERE loop */ - sqlite3WhereEnd(pWInfo); - if( okOnePass ){ - /* Bypass the delete logic below if the WHERE loop found zero rows */ + /* If this DELETE cannot use the ONEPASS strategy, this is the + ** end of the WHERE loop */ + if( eOnePass!=ONEPASS_OFF ){ addrBypass = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrBypass); - sqlite3VdbeJumpHere(v, addrDelete); + }else{ + sqlite3WhereEnd(pWInfo); } /* Unless this is a view, open cursors for the table we are @@ -89363,28 +104597,35 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( ** triggers. */ if( !isView ){ - sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, iTabCur, aToOpen, - &iDataCur, &iIdxCur); - assert( pPk || iDataCur==iTabCur ); - assert( pPk || iIdxCur==iDataCur+1 ); + int iAddrOnce = 0; + if( eOnePass==ONEPASS_MULTI ){ + iAddrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + } + testcase( IsVirtual(pTab) ); + sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, OPFLAG_FORDELETE, + iTabCur, aToOpen, &iDataCur, &iIdxCur); + assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur ); + assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 ); + if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce); } /* Set up a loop over the rowids/primary-keys that were found in the ** where-clause loop above. */ - if( okOnePass ){ - /* Just one row. Hence the top-of-loop is a no-op */ - assert( nKey==nPk ); /* OP_Found will use an unpacked key */ - if( aToOpen[iDataCur-iTabCur] ){ - assert( pPk!=0 ); + if( eOnePass!=ONEPASS_OFF ){ + assert( nKey==nPk ); /* OP_Found will use an unpacked key */ + if( !IsVirtual(pTab) && aToOpen[iDataCur-iTabCur] ){ + assert( pPk!=0 || pTab->pSelect!=0 ); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, addrBypass, iKey, nKey); + VdbeCoverage(v); } }else if( pPk ){ - addrLoop = sqlite3VdbeAddOp1(v, OP_Rewind, iEphCur); - sqlite3VdbeAddOp2(v, OP_RowKey, iEphCur, iKey); + addrLoop = sqlite3VdbeAddOp1(v, OP_Rewind, iEphCur); VdbeCoverage(v); + sqlite3VdbeAddOp2(v, OP_RowData, iEphCur, iKey); assert( nKey==0 ); /* OP_Found will use a composite key */ }else{ addrLoop = sqlite3VdbeAddOp3(v, OP_RowSetRead, iRowSet, 0, iKey); + VdbeCoverage(v); assert( nKey==1 ); } @@ -89395,33 +104636,30 @@ SQLITE_PRIVATE void sqlite3DeleteFrom( sqlite3VtabMakeWritable(pParse, pTab); sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iKey, pVTab, P4_VTAB); sqlite3VdbeChangeP5(v, OE_Abort); + assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE ); sqlite3MayAbort(pParse); + if( eOnePass==ONEPASS_SINGLE && sqlite3IsToplevel(pParse) ){ + pParse->isMultiWrite = 0; + } }else #endif { int count = (pParse->nested==0); /* True to count changes */ sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - iKey, nKey, count, OE_Default, okOnePass); + iKey, nKey, count, OE_Default, eOnePass, aiCurOnePass[1]); } /* End of the loop over all rowids/primary-keys. */ - if( okOnePass ){ + if( eOnePass!=ONEPASS_OFF ){ sqlite3VdbeResolveLabel(v, addrBypass); + sqlite3WhereEnd(pWInfo); }else if( pPk ){ - sqlite3VdbeAddOp2(v, OP_Next, iEphCur, addrLoop+1); + sqlite3VdbeAddOp2(v, OP_Next, iEphCur, addrLoop+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addrLoop); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrLoop); + sqlite3VdbeGoto(v, addrLoop); sqlite3VdbeJumpHere(v, addrLoop); } - - /* Close the cursors open on the table and its indexes. */ - if( !isView && !IsVirtual(pTab) ){ - if( !pPk ) sqlite3VdbeAddOp1(v, OP_Close, iDataCur); - for(i=0, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){ - sqlite3VdbeAddOp1(v, OP_Close, iIdxCur + i); - } - } } /* End non-truncate path */ /* Update the sqlite_sequence table by storing the content of the @@ -89450,7 +104688,7 @@ delete_from_cleanup: return; } /* Make sure "isView" and other macros defined above are undefined. Otherwise -** thely may interfere with compilation of other functions in this file +** they may interfere with compilation of other functions in this file ** (or in another file, if this file becomes part of the amalgamation). */ #ifdef isView #undef isView @@ -89478,6 +104716,27 @@ delete_from_cleanup: ** sequence of nPk memory cells starting at iPk. If nPk==0 that means ** that a search record formed from OP_MakeRecord is contained in the ** single memory location iPk. +** +** eMode: +** Parameter eMode may be passed either ONEPASS_OFF (0), ONEPASS_SINGLE, or +** ONEPASS_MULTI. If eMode is not ONEPASS_OFF, then the cursor +** iDataCur already points to the row to delete. If eMode is ONEPASS_OFF +** then this function must seek iDataCur to the entry identified by iPk +** and nPk before reading from it. +** +** If eMode is ONEPASS_MULTI, then this call is being made as part +** of a ONEPASS delete that affects multiple rows. In this case, if +** iIdxNoSeek is a valid cursor number (>=0) and is not the same as +** iDataCur, then its position should be preserved following the delete +** operation. Or, if iIdxNoSeek is not a valid cursor number, the +** position of iDataCur should be preserved instead. +** +** iIdxNoSeek: +** If iIdxNoSeek is a valid cursor number (>=0) not equal to iDataCur, +** then it identifies an index cursor (from within array of cursors +** starting at iIdxCur) that already points to the index entry to be deleted. +** Except, this optimization is disabled if there are BEFORE triggers since +** the trigger body might have moved the cursor. */ SQLITE_PRIVATE void sqlite3GenerateRowDelete( Parse *pParse, /* Parsing context */ @@ -89489,7 +104748,8 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( i16 nPk, /* Number of PRIMARY KEY memory cells */ u8 count, /* If non-zero, increment the row change counter */ u8 onconf, /* Default ON CONFLICT policy for triggers */ - u8 bNoSeek /* iDataCur is already pointing to the row to delete */ + u8 eMode, /* ONEPASS_OFF, _SINGLE, or _MULTI. See above */ + int iIdxNoSeek /* Cursor number of cursor that does not need seeking */ ){ Vdbe *v = pParse->pVdbe; /* Vdbe */ int iOld = 0; /* First register in OLD.* array */ @@ -89506,7 +104766,11 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( ** not attempt to delete it or fire any DELETE triggers. */ iLabel = sqlite3VdbeMakeLabel(v); opSeek = HasRowid(pTab) ? OP_NotExists : OP_NotFound; - if( !bNoSeek ) sqlite3VdbeAddOp4Int(v, opSeek, iDataCur, iLabel, iPk, nPk); + if( eMode==ONEPASS_OFF ){ + sqlite3VdbeAddOp4Int(v, opSeek, iDataCur, iLabel, iPk, nPk); + VdbeCoverageIf(v, opSeek==OP_NotExists); + VdbeCoverageIf(v, opSeek==OP_NotFound); + } /* If there are any triggers to fire, allocate a range of registers to ** use for the old.* references in the triggers. */ @@ -89543,11 +104807,18 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( /* If any BEFORE triggers were coded, then seek the cursor to the ** row to be deleted again. It may be that the BEFORE triggers moved - ** the cursor or of already deleted the row that the cursor was + ** the cursor or already deleted the row that the cursor was ** pointing to. + ** + ** Also disable the iIdxNoSeek optimization since the BEFORE trigger + ** may have moved that cursor. */ if( addrStart=0 ); + iIdxNoSeek = -1; } /* Do FK processing. This call checks that any FK constraints that @@ -89558,13 +104829,29 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete( /* Delete the index and table entries. Skip this step if pTab is really ** a view (in which case the only effect of the DELETE statement is to - ** fire the INSTEAD OF triggers). */ + ** fire the INSTEAD OF triggers). + ** + ** If variable 'count' is non-zero, then this OP_Delete instruction should + ** invoke the update-hook. The pre-update-hook, on the other hand should + ** be invoked unless table pTab is a system table. The difference is that + ** the update-hook is not invoked for rows removed by REPLACE, but the + ** pre-update-hook is. + */ if( pTab->pSelect==0 ){ - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, 0); + u8 p5 = 0; + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,iIdxNoSeek); sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, (count?OPFLAG_NCHANGE:0)); - if( count ){ - sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT); + if( pParse->nested==0 ){ + sqlite3VdbeAppendP4(v, (char*)pTab, P4_TABLE); } + if( eMode!=ONEPASS_OFF ){ + sqlite3VdbeChangeP5(v, OPFLAG_AUXDELETE); + } + if( iIdxNoSeek>=0 && iIdxNoSeek!=iDataCur ){ + sqlite3VdbeAddOp1(v, OP_Delete, iIdxNoSeek); + } + if( eMode==ONEPASS_MULTI ) p5 |= OPFLAG_SAVEPOSITION; + sqlite3VdbeChangeP5(v, p5); } /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to @@ -89607,7 +104894,8 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete( Table *pTab, /* Table containing the row to be deleted */ int iDataCur, /* Cursor of table holding data. */ int iIdxCur, /* First index cursor */ - int *aRegIdx /* Only delete if aRegIdx!=0 && aRegIdx[i]>0 */ + int *aRegIdx, /* Only delete if aRegIdx!=0 && aRegIdx[i]>0 */ + int iIdxNoSeek /* Do not delete from this cursor */ ){ int i; /* Index loop counter */ int r1 = -1; /* Register holding an index key */ @@ -89623,12 +104911,13 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete( assert( iIdxCur+i!=iDataCur || pPk==pIdx ); if( aRegIdx!=0 && aRegIdx[i]==0 ) continue; if( pIdx==pPk ) continue; + if( iIdxCur+i==iIdxNoSeek ) continue; VdbeModuleComment((v, "GenRowIdxDel for %s", pIdx->zName)); r1 = sqlite3GenerateIndexKey(pParse, pIdx, iDataCur, 0, 1, - &iPartIdxLabel, pPrior, r1); + &iPartIdxLabel, pPrior, r1); sqlite3VdbeAddOp3(v, OP_IdxDelete, iIdxCur+i, r1, - pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn); - sqlite3VdbeResolveLabel(v, iPartIdxLabel); + pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn); + sqlite3ResolvePartIdxLabel(pParse, iPartIdxLabel); pPrior = pIdx; } } @@ -89647,10 +104936,11 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete( ** ** If *piPartIdxLabel is not NULL, fill it in with a label and jump ** to that label if pIdx is a partial index that should be skipped. +** The label should be resolved using sqlite3ResolvePartIdxLabel(). ** A partial index should be skipped if its WHERE clause evaluates ** to false or null. If pIdx is not a partial index, *piPartIdxLabel ** will be set to zero which is an empty label that is ignored by -** sqlite3VdbeResolveLabel(). +** sqlite3ResolvePartIdxLabel(). ** ** The pPrior and regPrior parameters are used to implement a cache to ** avoid unnecessary register loads. If pPrior is not NULL, then it is @@ -89675,16 +104965,16 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( ){ Vdbe *v = pParse->pVdbe; int j; - Table *pTab = pIdx->pTable; int regBase; int nCol; if( piPartIdxLabel ){ if( pIdx->pPartIdxWhere ){ *piPartIdxLabel = sqlite3VdbeMakeLabel(v); - pParse->iPartIdxTab = iDataCur; - sqlite3ExprIfFalse(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, - SQLITE_JUMPIFNULL); + pParse->iSelfTab = iDataCur; + sqlite3ExprCachePush(pParse); + sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, + SQLITE_JUMPIFNULL); }else{ *piPartIdxLabel = 0; } @@ -89693,9 +104983,14 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( regBase = sqlite3GetTempRange(pParse, nCol); if( pPrior && (regBase!=regPrior || pPrior->pPartIdxWhere) ) pPrior = 0; for(j=0; jaiColumn[j]==pIdx->aiColumn[j] ) continue; - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, pIdx->aiColumn[j], - regBase+j); + if( pPrior + && pPrior->aiColumn[j]==pIdx->aiColumn[j] + && pPrior->aiColumn[j]!=XN_EXPR + ){ + /* This column was already computed by the previous index */ + continue; + } + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iDataCur, j, regBase+j); /* If the column affinity is REAL but the number is an integer, then it ** might be stored in the table as an integer (using a compact ** representation) then converted to REAL by an OP_RealAffinity opcode. @@ -89706,11 +105001,27 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( } if( regOut ){ sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regOut); + if( pIdx->pTable->pSelect ){ + const char *zAff = sqlite3IndexAffinityStr(pParse->db, pIdx); + sqlite3VdbeChangeP4(v, -1, zAff, P4_TRANSIENT); + } } sqlite3ReleaseTempRange(pParse, regBase, nCol); return regBase; } +/* +** If a prior call to sqlite3GenerateIndexKey() generated a jump-over label +** because it was a partial index, then this routine should be called to +** resolve that label. +*/ +SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse *pParse, int iLabel){ + if( iLabel ){ + sqlite3VdbeResolveLabel(pParse->pVdbe, iLabel); + sqlite3ExprCachePop(pParse); + } +} + /************** End of delete.c **********************************************/ /************** Begin file func.c ********************************************/ /* @@ -89724,21 +105035,25 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey( ** May you share freely, never taking more than you give. ** ************************************************************************* -** This file contains the C functions that implement various SQL -** functions of SQLite. -** -** There is only one exported symbol in this file - the function -** sqliteRegisterBuildinFunctions() found at the bottom of the file. -** All other code has file scope. +** This file contains the C-language implementations for many of the SQL +** functions of SQLite. (Some function, and in particular the date and +** time functions, are implemented separately.) */ +/* #include "sqliteInt.h" */ /* #include */ /* #include */ +/* #include "vdbeInt.h" */ /* ** Return the collating function associated with a function. */ static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){ - return context->pColl; + VdbeOp *pOp; + assert( context->pVdbe!=0 ); + pOp = &context->pVdbe->aOp[context->iOp-1]; + assert( pOp->opcode==OP_CollSeq ); + assert( pOp->p4type==P4_COLLSEQ ); + return pOp->p4.pColl; } /* @@ -89870,8 +105185,8 @@ static void absFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ default: { /* Because sqlite3_value_double() returns 0.0 if the argument is not ** something that can be converted into a number, we have: - ** IMP: R-57326-31541 Abs(X) return 0.0 if X is a string or blob that - ** cannot be converted to a numeric value. + ** IMP: R-01992-00519 Abs(X) returns 0.0 if X is a string or blob + ** that cannot be converted to a numeric value. */ double rVal = sqlite3_value_double(argv[0]); if( rVal<0 ) rVal = -rVal; @@ -89911,23 +105226,28 @@ static void instrFunc( if( typeHaystack==SQLITE_NULL || typeNeedle==SQLITE_NULL ) return; nHaystack = sqlite3_value_bytes(argv[0]); nNeedle = sqlite3_value_bytes(argv[1]); - if( typeHaystack==SQLITE_BLOB && typeNeedle==SQLITE_BLOB ){ - zHaystack = sqlite3_value_blob(argv[0]); - zNeedle = sqlite3_value_blob(argv[1]); - isText = 0; - }else{ - zHaystack = sqlite3_value_text(argv[0]); - zNeedle = sqlite3_value_text(argv[1]); - isText = 1; + if( nNeedle>0 ){ + if( typeHaystack==SQLITE_BLOB && typeNeedle==SQLITE_BLOB ){ + zHaystack = sqlite3_value_blob(argv[0]); + zNeedle = sqlite3_value_blob(argv[1]); + assert( zNeedle!=0 ); + assert( zHaystack!=0 || nHaystack==0 ); + isText = 0; + }else{ + zHaystack = sqlite3_value_text(argv[0]); + zNeedle = sqlite3_value_text(argv[1]); + isText = 1; + if( zHaystack==0 || zNeedle==0 ) return; + } + while( nNeedle<=nHaystack && memcmp(zHaystack, zNeedle, nNeedle)!=0 ){ + N++; + do{ + nHaystack--; + zHaystack++; + }while( isText && (zHaystack[0]&0xc0)==0x80 ); + } + if( nNeedle>nHaystack ) N = 0; } - while( nNeedle<=nHaystack && memcmp(zHaystack, zNeedle, nNeedle)!=0 ){ - N++; - do{ - nHaystack--; - zHaystack++; - }while( isText && (zHaystack[0]&0xc0)==0x80 ); - } - if( nNeedle>nHaystack ) N = 0; sqlite3_result_int(context, N); } @@ -89943,14 +105263,15 @@ static void printfFunc( StrAccum str; const char *zFormat; int n; + sqlite3 *db = sqlite3_context_db_handle(context); if( argc>=1 && (zFormat = (const char*)sqlite3_value_text(argv[0]))!=0 ){ x.nArg = argc-1; x.nUsed = 0; x.apArg = argv+1; - sqlite3StrAccumInit(&str, 0, 0, SQLITE_MAX_LENGTH); - str.db = sqlite3_context_db_handle(context); - sqlite3XPrintf(&str, SQLITE_PRINTF_SQLFUNC, zFormat, &x); + sqlite3StrAccumInit(&str, db, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]); + str.printfFlags = SQLITE_PRINTF_SQLFUNC; + sqlite3XPrintf(&str, zFormat, &x); n = str.nChar; sqlite3_result_text(context, sqlite3StrAccumFinish(&str), n, SQLITE_DYNAMIC); @@ -90004,6 +105325,14 @@ static void substrFunc( } } } +#ifdef SQLITE_SUBSTR_COMPATIBILITY + /* If SUBSTR_COMPATIBILITY is defined then substr(X,0,N) work the same as + ** as substr(X,1,N) - it returns the first N characters of X. This + ** is essentially a back-out of the bug-fix in check-in [5fc125d362df4b8] + ** from 2009-02-02 for compatibility of applications that exploited the + ** old buggy behavior. */ + if( p1==0 ) p1 = 1; /* */ +#endif if( argc==3 ){ p2 = sqlite3_value_int(argv[2]); if( p2<0 ){ @@ -90041,13 +105370,14 @@ static void substrFunc( for(z2=z; *z2 && p2; p2--){ SQLITE_SKIP_UTF8(z2); } - sqlite3_result_text(context, (char*)z, (int)(z2-z), SQLITE_TRANSIENT); + sqlite3_result_text64(context, (char*)z, z2-z, SQLITE_TRANSIENT, + SQLITE_UTF8); }else{ if( p1+p2>len ){ p2 = len-p1; if( p2<0 ) p2 = 0; } - sqlite3_result_blob(context, (char*)&z[p1], (int)p2, SQLITE_TRANSIENT); + sqlite3_result_blob64(context, (char*)&z[p1], (u64)p2, SQLITE_TRANSIENT); } } @@ -90090,7 +105420,7 @@ static void roundFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ #endif /* -** Allocate nByte bytes of space using sqlite3_malloc(). If the +** Allocate nByte bytes of space using sqlite3Malloc(). If the ** allocation fails, call sqlite3_result_error_nomem() to notify ** the database handle that malloc() has failed and return NULL. ** If nByte is larger than the maximum string or blob length, then @@ -90106,7 +105436,7 @@ static void *contextMalloc(sqlite3_context *context, i64 nByte){ sqlite3_result_error_toobig(context); z = 0; }else{ - z = sqlite3Malloc((int)nByte); + z = sqlite3Malloc(nByte); if( !z ){ sqlite3_result_error_nomem(context); } @@ -90269,23 +105599,23 @@ static void total_changes( ** A structure defining how to do GLOB-style comparisons. */ struct compareInfo { - u8 matchAll; - u8 matchOne; - u8 matchSet; - u8 noCase; + u8 matchAll; /* "*" or "%" */ + u8 matchOne; /* "?" or "_" */ + u8 matchSet; /* "[" or 0 */ + u8 noCase; /* true to ignore case differences */ }; /* ** For LIKE and GLOB matching on EBCDIC machines, assume that every -** character is exactly one byte in size. Also, all characters are -** able to participate in upper-case-to-lower-case mappings in EBCDIC -** whereas only characters less than 0x80 do in ASCII. +** character is exactly one byte in size. Also, provde the Utf8Read() +** macro for fast reading of the next character in the common case where +** the next character is ASCII. */ #if defined(SQLITE_EBCDIC) -# define sqlite3Utf8Read(A) (*((*A)++)) -# define GlobUpperToLower(A) A = sqlite3UpperToLower[A] +# define sqlite3Utf8Read(A) (*((*A)++)) +# define Utf8Read(A) (*(A++)) #else -# define GlobUpperToLower(A) if( !((A)&~0x7f) ){ A = sqlite3UpperToLower[A]; } +# define Utf8Read(A) (A[0]<0x80?*(A++):sqlite3Utf8Read(&A)) #endif static const struct compareInfo globInfo = { '*', '?', '[', 0 }; @@ -90297,9 +105627,19 @@ static const struct compareInfo likeInfoNorm = { '%', '_', 0, 1 }; static const struct compareInfo likeInfoAlt = { '%', '_', 0, 0 }; /* -** Compare two UTF-8 strings for equality where the first string can -** potentially be a "glob" expression. Return true (1) if they -** are the same and false (0) if they are different. +** Possible error returns from patternMatch() +*/ +#define SQLITE_MATCH 0 +#define SQLITE_NOMATCH 1 +#define SQLITE_NOWILDCARDMATCH 2 + +/* +** Compare two UTF-8 strings for equality where the first string is +** a GLOB or LIKE expression. Return values: +** +** SQLITE_MATCH: Match +** SQLITE_NOMATCH: No match +** SQLITE_NOWILDCARDMATCH: No match in spite of having * or % wildcards. ** ** Globbing rules: ** @@ -90318,125 +105658,157 @@ static const struct compareInfo likeInfoAlt = { '%', '_', 0, 0 }; ** "[a-z]" matches any single lower-case letter. To match a '-', make ** it the last character in the list. ** +** Like matching rules: +** +** '%' Matches any sequence of zero or more characters +** +*** '_' Matches any one character +** +** Ec Where E is the "esc" character and c is any other +** character, including '%', '_', and esc, match exactly c. +** +** The comments within this routine usually assume glob matching. +** ** This routine is usually quick, but can be N**2 in the worst case. -** -** Hints: to match '*' or '?', put them in "[]". Like this: -** -** abc[*]xyz Matches "abc*xyz" only */ static int patternCompare( const u8 *zPattern, /* The glob pattern */ const u8 *zString, /* The string to compare against the glob */ const struct compareInfo *pInfo, /* Information about how to do the compare */ - u32 esc /* The escape character */ + u32 matchOther /* The escape char (LIKE) or '[' (GLOB) */ ){ - u32 c, c2; - int invert; - int seen; - u8 matchOne = pInfo->matchOne; - u8 matchAll = pInfo->matchAll; - u8 matchSet = pInfo->matchSet; - u8 noCase = pInfo->noCase; - int prevEscape = 0; /* True if the previous character was 'escape' */ - - while( (c = sqlite3Utf8Read(&zPattern))!=0 ){ - if( c==matchAll && !prevEscape ){ - while( (c=sqlite3Utf8Read(&zPattern)) == matchAll - || c == matchOne ){ + u32 c, c2; /* Next pattern and input string chars */ + u32 matchOne = pInfo->matchOne; /* "?" or "_" */ + u32 matchAll = pInfo->matchAll; /* "*" or "%" */ + u8 noCase = pInfo->noCase; /* True if uppercase==lowercase */ + const u8 *zEscaped = 0; /* One past the last escaped input char */ + + while( (c = Utf8Read(zPattern))!=0 ){ + if( c==matchAll ){ /* Match "*" */ + /* Skip over multiple "*" characters in the pattern. If there + ** are also "?" characters, skip those as well, but consume a + ** single character of the input string for each "?" skipped */ + while( (c=Utf8Read(zPattern)) == matchAll || c == matchOne ){ if( c==matchOne && sqlite3Utf8Read(&zString)==0 ){ - return 0; + return SQLITE_NOWILDCARDMATCH; } } if( c==0 ){ - return 1; - }else if( c==esc ){ - c = sqlite3Utf8Read(&zPattern); - if( c==0 ){ - return 0; + return SQLITE_MATCH; /* "*" at the end of the pattern matches */ + }else if( c==matchOther ){ + if( pInfo->matchSet==0 ){ + c = sqlite3Utf8Read(&zPattern); + if( c==0 ) return SQLITE_NOWILDCARDMATCH; + }else{ + /* "[...]" immediately follows the "*". We have to do a slow + ** recursive search in this case, but it is an unusual case. */ + assert( matchOther<0x80 ); /* '[' is a single-byte character */ + while( *zString ){ + int bMatch = patternCompare(&zPattern[-1],zString,pInfo,matchOther); + if( bMatch!=SQLITE_NOMATCH ) return bMatch; + SQLITE_SKIP_UTF8(zString); + } + return SQLITE_NOWILDCARDMATCH; } - }else if( c==matchSet ){ - assert( esc==0 ); /* This is GLOB, not LIKE */ - assert( matchSet<0x80 ); /* '[' is a single-byte character */ - while( *zString && patternCompare(&zPattern[-1],zString,pInfo,esc)==0 ){ - SQLITE_SKIP_UTF8(zString); - } - return *zString!=0; } - while( (c2 = sqlite3Utf8Read(&zString))!=0 ){ + + /* At this point variable c contains the first character of the + ** pattern string past the "*". Search in the input string for the + ** first matching character and recursively continue the match from + ** that point. + ** + ** For a case-insensitive search, set variable cx to be the same as + ** c but in the other case and search the input string for either + ** c or cx. + */ + if( c<=0x80 ){ + u32 cx; + int bMatch; if( noCase ){ - GlobUpperToLower(c2); - GlobUpperToLower(c); - while( c2 != 0 && c2 != c ){ - c2 = sqlite3Utf8Read(&zString); - GlobUpperToLower(c2); - } + cx = sqlite3Toupper(c); + c = sqlite3Tolower(c); }else{ - while( c2 != 0 && c2 != c ){ - c2 = sqlite3Utf8Read(&zString); - } + cx = c; } - if( c2==0 ) return 0; - if( patternCompare(zPattern,zString,pInfo,esc) ) return 1; - } - return 0; - }else if( c==matchOne && !prevEscape ){ - if( sqlite3Utf8Read(&zString)==0 ){ - return 0; - } - }else if( c==matchSet ){ - u32 prior_c = 0; - assert( esc==0 ); /* This only occurs for GLOB, not LIKE */ - seen = 0; - invert = 0; - c = sqlite3Utf8Read(&zString); - if( c==0 ) return 0; - c2 = sqlite3Utf8Read(&zPattern); - if( c2=='^' ){ - invert = 1; - c2 = sqlite3Utf8Read(&zPattern); - } - if( c2==']' ){ - if( c==']' ) seen = 1; - c2 = sqlite3Utf8Read(&zPattern); - } - while( c2 && c2!=']' ){ - if( c2=='-' && zPattern[0]!=']' && zPattern[0]!=0 && prior_c>0 ){ - c2 = sqlite3Utf8Read(&zPattern); - if( c>=prior_c && c<=c2 ) seen = 1; - prior_c = 0; - }else{ - if( c==c2 ){ - seen = 1; - } - prior_c = c2; + while( (c2 = *(zString++))!=0 ){ + if( c2!=c && c2!=cx ) continue; + bMatch = patternCompare(zPattern,zString,pInfo,matchOther); + if( bMatch!=SQLITE_NOMATCH ) return bMatch; + } + }else{ + int bMatch; + while( (c2 = Utf8Read(zString))!=0 ){ + if( c2!=c ) continue; + bMatch = patternCompare(zPattern,zString,pInfo,matchOther); + if( bMatch!=SQLITE_NOMATCH ) return bMatch; } - c2 = sqlite3Utf8Read(&zPattern); } - if( c2==0 || (seen ^ invert)==0 ){ - return 0; - } - }else if( esc==c && !prevEscape ){ - prevEscape = 1; - }else{ - c2 = sqlite3Utf8Read(&zString); - if( noCase ){ - GlobUpperToLower(c); - GlobUpperToLower(c2); - } - if( c!=c2 ){ - return 0; - } - prevEscape = 0; + return SQLITE_NOWILDCARDMATCH; } + if( c==matchOther ){ + if( pInfo->matchSet==0 ){ + c = sqlite3Utf8Read(&zPattern); + if( c==0 ) return SQLITE_NOMATCH; + zEscaped = zPattern; + }else{ + u32 prior_c = 0; + int seen = 0; + int invert = 0; + c = sqlite3Utf8Read(&zString); + if( c==0 ) return SQLITE_NOMATCH; + c2 = sqlite3Utf8Read(&zPattern); + if( c2=='^' ){ + invert = 1; + c2 = sqlite3Utf8Read(&zPattern); + } + if( c2==']' ){ + if( c==']' ) seen = 1; + c2 = sqlite3Utf8Read(&zPattern); + } + while( c2 && c2!=']' ){ + if( c2=='-' && zPattern[0]!=']' && zPattern[0]!=0 && prior_c>0 ){ + c2 = sqlite3Utf8Read(&zPattern); + if( c>=prior_c && c<=c2 ) seen = 1; + prior_c = 0; + }else{ + if( c==c2 ){ + seen = 1; + } + prior_c = c2; + } + c2 = sqlite3Utf8Read(&zPattern); + } + if( c2==0 || (seen ^ invert)==0 ){ + return SQLITE_NOMATCH; + } + continue; + } + } + c2 = Utf8Read(zString); + if( c==c2 ) continue; + if( noCase && sqlite3Tolower(c)==sqlite3Tolower(c2) && c<0x80 && c2<0x80 ){ + continue; + } + if( c==matchOne && zPattern!=zEscaped && c2!=0 ) continue; + return SQLITE_NOMATCH; } - return *zString==0; + return *zString==0 ? SQLITE_MATCH : SQLITE_NOMATCH; } /* -** The sqlite3_strglob() interface. +** The sqlite3_strglob() interface. Return 0 on a match (like strcmp()) and +** non-zero if there is no match. */ SQLITE_API int sqlite3_strglob(const char *zGlobPattern, const char *zString){ - return patternCompare((u8*)zGlobPattern, (u8*)zString, &globInfo, 0)==0; + return patternCompare((u8*)zGlobPattern, (u8*)zString, &globInfo, '['); +} + +/* +** The sqlite3_strlike() interface. Return 0 on a match and non-zero for +** a miss - like strcmp(). +*/ +SQLITE_API int sqlite3_strlike(const char *zPattern, const char *zStr, unsigned int esc){ + return patternCompare((u8*)zPattern, (u8*)zStr, &likeInfoNorm, esc); } /* @@ -90467,10 +105839,22 @@ static void likeFunc( sqlite3_value **argv ){ const unsigned char *zA, *zB; - u32 escape = 0; + u32 escape; int nPat; sqlite3 *db = sqlite3_context_db_handle(context); + struct compareInfo *pInfo = sqlite3_user_data(context); +#ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS + if( sqlite3_value_type(argv[0])==SQLITE_BLOB + || sqlite3_value_type(argv[1])==SQLITE_BLOB + ){ +#ifdef SQLITE_TEST + sqlite3_like_count++; +#endif + sqlite3_result_int(context, 0); + return; + } +#endif zB = sqlite3_value_text(argv[0]); zA = sqlite3_value_text(argv[1]); @@ -90498,14 +105882,14 @@ static void likeFunc( return; } escape = sqlite3Utf8Read(&zEsc); + }else{ + escape = pInfo->matchSet; } if( zA && zB ){ - struct compareInfo *pInfo = sqlite3_user_data(context); #ifdef SQLITE_TEST sqlite3_like_count++; #endif - - sqlite3_result_int(context, patternCompare(zB, zA, pInfo, escape)); + sqlite3_result_int(context, patternCompare(zB, zA, pInfo, escape)==SQLITE_MATCH); } } @@ -90730,7 +106114,7 @@ static void charFunc( ){ unsigned char *z, *zOut; int i; - zOut = z = sqlite3_malloc( argc*4 ); + zOut = z = sqlite3_malloc64( argc*4+1 ); if( z==0 ){ sqlite3_result_error_nomem(context); return; @@ -90757,7 +106141,7 @@ static void charFunc( *zOut++ = 0x80 + (u8)(c & 0x3F); } \ } - sqlite3_result_text(context, (char*)z, (int)(zOut-z), sqlite3_free); + sqlite3_result_text64(context, (char*)z, zOut-z, sqlite3_free, SQLITE_UTF8); } /* @@ -90798,16 +106182,14 @@ static void zeroblobFunc( sqlite3_value **argv ){ i64 n; - sqlite3 *db = sqlite3_context_db_handle(context); + int rc; assert( argc==1 ); UNUSED_PARAMETER(argc); n = sqlite3_value_int64(argv[0]); - testcase( n==db->aLimit[SQLITE_LIMIT_LENGTH] ); - testcase( n==db->aLimit[SQLITE_LIMIT_LENGTH]+1 ); - if( n>db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - }else{ - sqlite3_result_zeroblob(context, (int)n); /* IMP: R-00293-64994 */ + if( n<0 ) n = 0; + rc = sqlite3_result_zeroblob64(context, n); /* IMP: R-00293-64994 */ + if( rc ){ + sqlite3_result_error_code(context, rc); } } @@ -90878,7 +106260,7 @@ static void replaceFunc( return; } zOld = zOut; - zOut = sqlite3_realloc(zOut, (int)nOut); + zOut = sqlite3_realloc64(zOut, (int)nOut); if( zOut==0 ){ sqlite3_result_error_nomem(context); sqlite3_free(zOld); @@ -90982,6 +106364,26 @@ static void trimFunc( } +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION +/* +** The "unknown" function is automatically substituted in place of +** any unrecognized function name when doing an EXPLAIN or EXPLAIN QUERY PLAN +** when the SQLITE_ENABLE_UNKNOWN_FUNCTION compile-time option is used. +** When the "sqlite3" command-line shell is built using this functionality, +** that allows an EXPLAIN or EXPLAIN QUERY PLAN for complex queries +** involving application-defined functions to be examined in a generic +** sqlite3 shell. +*/ +static void unknownFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + /* no-op */ +} +#endif /*SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION*/ + + /* IMP: R-25361-16150 This function is omitted from SQLite by default. It ** is only available if the SQLITE_SOUNDEX compile-time option is used ** when SQLite is built. @@ -91052,6 +106454,14 @@ static void loadExt(sqlite3_context *context, int argc, sqlite3_value **argv){ sqlite3 *db = sqlite3_context_db_handle(context); char *zErrMsg = 0; + /* Disallow the load_extension() SQL function unless the SQLITE_LoadExtFunc + ** flag is set. See the sqlite3_enable_load_extension() API. + */ + if( (db->flags & SQLITE_LoadExtFunc)==0 ){ + sqlite3_result_error(context, "not authorized", -1); + return; + } + if( argc==2 ){ zProc = (const char *)sqlite3_value_text(argv[1]); }else{ @@ -91207,6 +106617,7 @@ static void minmaxStep( sqlite3SkipAccumulatorLoad(context); } }else{ + pBest->db = sqlite3_context_db_handle(context); sqlite3VdbeMemCopy(pBest, pArg); } } @@ -91239,8 +106650,7 @@ static void groupConcatStep( if( pAccum ){ sqlite3 *db = sqlite3_context_db_handle(context); - int firstTerm = pAccum->useMalloc==0; - pAccum->useMalloc = 2; + int firstTerm = pAccum->mxAlloc==0; pAccum->mxAlloc = db->aLimit[SQLITE_LIMIT_LENGTH]; if( !firstTerm ){ if( argc==2 ){ @@ -91250,11 +106660,11 @@ static void groupConcatStep( zSep = ","; nSep = 1; } - if( nSep ) sqlite3StrAccumAppend(pAccum, zSep, nSep); + if( zSep ) sqlite3StrAccumAppend(pAccum, zSep, nSep); } zVal = (char*)sqlite3_value_text(argv[0]); nVal = sqlite3_value_bytes(argv[0]); - if( nVal ) sqlite3StrAccumAppend(pAccum, zVal, nVal); + if( zVal ) sqlite3StrAccumAppend(pAccum, zVal, nVal); } } static void groupConcatFinalize(sqlite3_context *context){ @@ -91277,11 +106687,11 @@ static void groupConcatFinalize(sqlite3_context *context){ ** of the built-in functions above are part of the global function set. ** This routine only deals with those that are not global. */ -SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(sqlite3 *db){ +SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3 *db){ int rc = sqlite3_overload_function(db, "MATCH", 2); assert( rc==SQLITE_NOMEM || rc==SQLITE_OK ); if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } } @@ -91290,8 +106700,7 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(sqlite3 *db){ */ static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){ FuncDef *pDef; - pDef = sqlite3FindFunction(db, zName, sqlite3Strlen30(zName), - 2, SQLITE_UTF8, 0); + pDef = sqlite3FindFunction(db, zName, 2, SQLITE_UTF8, 0); if( ALWAYS(pDef) ){ pDef->funcFlags |= flagVal; } @@ -91324,6 +106733,11 @@ SQLITE_PRIVATE void sqlite3RegisterLikeFunctions(sqlite3 *db, int caseSensitive) ** then set aWc[0] through aWc[2] to the wildcard characters and ** return TRUE. If the function is not a LIKE-style function then ** return FALSE. +** +** *pIsNocase is set to true if uppercase and lowercase are equivalent for +** the function (default for LIKE). If the function makes the distinction +** between uppercase and lowercase (as does GLOB) then *pIsNocase is set to +** false. */ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){ FuncDef *pDef; @@ -91334,9 +106748,7 @@ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocas return 0; } assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - pDef = sqlite3FindFunction(db, pExpr->u.zToken, - sqlite3Strlen30(pExpr->u.zToken), - 2, SQLITE_UTF8, 0); + pDef = sqlite3FindFunction(db, pExpr->u.zToken, 2, SQLITE_UTF8, 0); if( NEVER(pDef==0) || (pDef->funcFlags & SQLITE_FUNC_LIKE)==0 ){ return 0; } @@ -91354,13 +106766,13 @@ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocas } /* -** All all of the FuncDef structures in the aBuiltinFunc[] array above +** All of the FuncDef structures in the aBuiltinFunc[] array above ** to the global function hash table. This occurs at start-time (as ** a consequence of calling sqlite3_initialize()). ** ** After this routine runs */ -SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ +SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){ /* ** The following array holds FuncDef structures for all of the functions ** defined in this file. @@ -91368,8 +106780,30 @@ SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ ** The array cannot be constant since changes are made to the ** FuncDef.pHash elements at start-time. The elements of this array ** are read-only after initialization is complete. + ** + ** For peak efficiency, put the most frequently used function last. */ - static SQLITE_WSD FuncDef aBuiltinFunc[] = { + static FuncDef aBuiltinFunc[] = { +#ifdef SQLITE_SOUNDEX + FUNCTION(soundex, 1, 0, 0, soundexFunc ), +#endif +#ifndef SQLITE_OMIT_LOAD_EXTENSION + VFUNCTION(load_extension, 1, 0, 0, loadExt ), + VFUNCTION(load_extension, 2, 0, 0, loadExt ), +#endif +#if SQLITE_USER_AUTHENTICATION + FUNCTION(sqlite_crypt, 2, 0, 0, sqlite3CryptFunc ), +#endif +#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS + DFUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), + DFUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), +#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ + FUNCTION2(unlikely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), + FUNCTION2(likelihood, 2, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), + FUNCTION2(likely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), +#ifdef SQLITE_DEBUG + FUNCTION2(affinity, 1, 0, 0, noopFunc, SQLITE_FUNC_AFFINITY), +#endif FUNCTION(ltrim, 1, 1, 0, trimFunc ), FUNCTION(ltrim, 2, 1, 0, trimFunc ), FUNCTION(rtrim, 1, 2, 0, trimFunc ), @@ -91378,15 +106812,15 @@ SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ FUNCTION(trim, 2, 3, 0, trimFunc ), FUNCTION(min, -1, 0, 1, minmaxFunc ), FUNCTION(min, 0, 0, 1, 0 ), - AGGREGATE(min, 1, 0, 1, minmaxStep, minMaxFinalize ), + AGGREGATE2(min, 1, 0, 1, minmaxStep, minMaxFinalize, + SQLITE_FUNC_MINMAX ), FUNCTION(max, -1, 1, 1, minmaxFunc ), FUNCTION(max, 0, 1, 1, 0 ), - AGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize ), + AGGREGATE2(max, 1, 1, 1, minmaxStep, minMaxFinalize, + SQLITE_FUNC_MINMAX ), FUNCTION2(typeof, 1, 0, 0, typeofFunc, SQLITE_FUNC_TYPEOF), FUNCTION2(length, 1, 0, 0, lengthFunc, SQLITE_FUNC_LENGTH), FUNCTION(instr, 2, 0, 0, instrFunc ), - FUNCTION(substr, 2, 0, 0, substrFunc ), - FUNCTION(substr, 3, 0, 0, substrFunc ), FUNCTION(printf, -1, 0, 0, printfFunc ), FUNCTION(unicode, 1, 0, 0, unicodeFunc ), FUNCTION(char, -1, 0, 0, charFunc ), @@ -91397,68 +106831,69 @@ SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ #endif FUNCTION(upper, 1, 0, 0, upperFunc ), FUNCTION(lower, 1, 0, 0, lowerFunc ), - FUNCTION(coalesce, 1, 0, 0, 0 ), - FUNCTION(coalesce, 0, 0, 0, 0 ), - FUNCTION2(coalesce, -1, 0, 0, noopFunc, SQLITE_FUNC_COALESCE), FUNCTION(hex, 1, 0, 0, hexFunc ), FUNCTION2(ifnull, 2, 0, 0, noopFunc, SQLITE_FUNC_COALESCE), - FUNCTION2(unlikely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), - FUNCTION2(likelihood, 2, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY), VFUNCTION(random, 0, 0, 0, randomFunc ), VFUNCTION(randomblob, 1, 0, 0, randomBlob ), FUNCTION(nullif, 2, 0, 1, nullifFunc ), - FUNCTION(sqlite_version, 0, 0, 0, versionFunc ), - FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ), + DFUNCTION(sqlite_version, 0, 0, 0, versionFunc ), + DFUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ), FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ), -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), - FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ FUNCTION(quote, 1, 0, 0, quoteFunc ), VFUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid), VFUNCTION(changes, 0, 0, 0, changes ), VFUNCTION(total_changes, 0, 0, 0, total_changes ), FUNCTION(replace, 3, 0, 0, replaceFunc ), FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ), - #ifdef SQLITE_SOUNDEX - FUNCTION(soundex, 1, 0, 0, soundexFunc ), - #endif - #ifndef SQLITE_OMIT_LOAD_EXTENSION - FUNCTION(load_extension, 1, 0, 0, loadExt ), - FUNCTION(load_extension, 2, 0, 0, loadExt ), - #endif + FUNCTION(substr, 2, 0, 0, substrFunc ), + FUNCTION(substr, 3, 0, 0, substrFunc ), AGGREGATE(sum, 1, 0, 0, sumStep, sumFinalize ), AGGREGATE(total, 1, 0, 0, sumStep, totalFinalize ), AGGREGATE(avg, 1, 0, 0, sumStep, avgFinalize ), - /* AGGREGATE(count, 0, 0, 0, countStep, countFinalize ), */ - {0,SQLITE_UTF8|SQLITE_FUNC_COUNT,0,0,0,countStep,countFinalize,"count",0,0}, + AGGREGATE2(count, 0, 0, 0, countStep, countFinalize, + SQLITE_FUNC_COUNT ), AGGREGATE(count, 1, 0, 0, countStep, countFinalize ), AGGREGATE(group_concat, 1, 0, 0, groupConcatStep, groupConcatFinalize), AGGREGATE(group_concat, 2, 0, 0, groupConcatStep, groupConcatFinalize), LIKEFUNC(glob, 2, &globInfo, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), - #ifdef SQLITE_CASE_SENSITIVE_LIKE +#ifdef SQLITE_CASE_SENSITIVE_LIKE LIKEFUNC(like, 2, &likeInfoAlt, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), LIKEFUNC(like, 3, &likeInfoAlt, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), - #else +#else LIKEFUNC(like, 2, &likeInfoNorm, SQLITE_FUNC_LIKE), LIKEFUNC(like, 3, &likeInfoNorm, SQLITE_FUNC_LIKE), - #endif +#endif +#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION + FUNCTION(unknown, -1, 0, 0, unknownFunc ), +#endif + FUNCTION(coalesce, 1, 0, 0, 0 ), + FUNCTION(coalesce, 0, 0, 0, 0 ), + FUNCTION2(coalesce, -1, 0, 0, noopFunc, SQLITE_FUNC_COALESCE), }; - - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aBuiltinFunc); - - for(i=0; iu.pHash){ + int n = sqlite3Strlen30(p->zName); + int h = p->zName[0] + n; + printf(" %s(%d)", p->zName, h); + } + printf("\n"); + } + } #endif } @@ -91477,6 +106912,7 @@ SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ ** This file contains code used by the compiler to add foreign key ** support to compiled SQL statements. */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_FOREIGN_KEY #ifndef SQLITE_OMIT_TRIGGER @@ -91638,7 +107074,7 @@ SQLITE_PRIVATE void sqlite3RegisterGlobalFunctions(void){ ** ** 4) No parent key columns were provided explicitly as part of the ** foreign key definition, and the PRIMARY KEY of the parent table -** consists of a a different number of columns to the child key in +** consists of a different number of columns to the child key in ** the child table. ** ** then non-zero is returned, and a "foreign key mismatch" error loaded @@ -91684,13 +107120,13 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( } }else if( paiCol ){ assert( nCol>1 ); - aiCol = (int *)sqlite3DbMallocRaw(pParse->db, nCol*sizeof(int)); + aiCol = (int *)sqlite3DbMallocRawNN(pParse->db, nCol*sizeof(int)); if( !aiCol ) return 1; *paiCol = aiCol; } for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->nKeyCol==nCol && pIdx->onError!=OE_None ){ + if( pIdx->nKeyCol==nCol && IsUniqueIndex(pIdx) && pIdx->pPartIdxWhere==0 ){ /* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number ** of columns. If each indexed column corresponds to a foreign key ** column of pFKey, then this index is a winner. */ @@ -91698,8 +107134,8 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( if( zKey==0 ){ /* If zKey is NULL, then this foreign key is implicitly mapped to ** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be - ** identified by the test (Index.autoIndex==2). */ - if( pIdx->autoIndex==2 ){ + ** identified by the test. */ + if( IsPrimaryKeyIndex(pIdx) ){ if( aiCol ){ int i; for(i=0; iaCol[i].iFrom; @@ -91714,16 +107150,16 @@ SQLITE_PRIVATE int sqlite3FkLocateIndex( int i, j; for(i=0; iaiColumn[i]; /* Index of column in parent tbl */ - char *zDfltColl; /* Def. collation for column */ + const char *zDfltColl; /* Def. collation for column */ char *zIdxCol; /* Name of indexed column */ + if( iCol<0 ) break; /* No foreign keys against expression indexes */ + /* If the index uses a collation sequence that is different from ** the default collation sequence for the column, this index is ** unusable. Bail out early in this case. */ zDfltColl = pParent->aCol[iCol].zColl; - if( !zDfltColl ){ - zDfltColl = "BINARY"; - } + if( !zDfltColl ) zDfltColl = sqlite3StrBINARY; if( sqlite3StrICmp(pIdx->azColl[i], zDfltColl) ) break; zIdxCol = pParent->aCol[iCol].zName; @@ -91805,10 +107241,11 @@ static void fkLookupParent( ** search for a matching row in the parent table. */ if( nIncr<0 ){ sqlite3VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, iOk); + VdbeCoverage(v); } for(i=0; inCol; i++){ int iReg = aiCol[i] + regData + 1; - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iOk); + sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iOk); VdbeCoverage(v); } if( isIgnore==0 ){ @@ -91825,18 +107262,20 @@ static void fkLookupParent( ** will have INTEGER affinity applied to it, which may not be correct. */ sqlite3VdbeAddOp2(v, OP_SCopy, aiCol[0]+1+regData, regTemp); iMustBeInt = sqlite3VdbeAddOp2(v, OP_MustBeInt, regTemp, 0); + VdbeCoverage(v); /* If the parent table is the same as the child table, and we are about ** to increment the constraint-counter (i.e. this is an INSERT operation), ** then check if the row being inserted matches itself. If so, do not ** increment the constraint-counter. */ if( pTab==pFKey->pFrom && nIncr==1 ){ - sqlite3VdbeAddOp3(v, OP_Eq, regData, iOk, regTemp); + sqlite3VdbeAddOp3(v, OP_Eq, regData, iOk, regTemp); VdbeCoverage(v); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); } sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); + sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp); VdbeCoverage(v); + sqlite3VdbeGoto(v, iOk); sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); sqlite3VdbeJumpHere(v, iMustBeInt); sqlite3ReleaseTempReg(pParse, regTemp); @@ -91866,20 +107305,21 @@ static void fkLookupParent( for(i=0; iaiColumn[i]+1+regData; + assert( pIdx->aiColumn[i]>=0 ); assert( aiCol[i]!=pTab->iPKey ); if( pIdx->aiColumn[i]==pTab->iPKey ){ /* The parent key is a composite key that includes the IPK column */ iParent = regData; } - sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent); + sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent); VdbeCoverage(v); sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); } - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); + sqlite3VdbeGoto(v, iOk); } - sqlite3VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec); - sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v,pIdx), P4_TRANSIENT); - sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regTemp, nCol, regRec, + sqlite3IndexAffinityStr(pParse->db,pIdx), nCol); + sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0); VdbeCoverage(v); sqlite3ReleaseTempReg(pParse, regRec); sqlite3ReleaseTempRange(pParse, regTemp, nCol); @@ -91899,7 +107339,7 @@ static void fkLookupParent( OE_Abort, 0, P4_STATIC, P5_ConstraintFK); }else{ if( nIncr>0 && pFKey->isDeferred==0 ){ - sqlite3ParseToplevel(pParse)->mayAbort = 1; + sqlite3MayAbort(pParse); } sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr); } @@ -91971,6 +107411,10 @@ static Expr *exprTableColumn( ** code for an SQL UPDATE operation, this function may be called twice - ** once to "delete" the old row and once to "insert" the new row. ** +** Parameter nIncr is passed -1 when inserting a row (as this may decrease +** the number of FK violations in the db) or +1 when deleting one (as this +** may increase the number of FK constraint problems). +** ** The code generated by this function scans through the rows in the child ** table that correspond to the parent table row being deleted or inserted. ** For each child row found, one of the following actions is taken: @@ -92017,6 +107461,7 @@ static void fkScanChildren( if( nIncr<0 ){ iFkIfZero = sqlite3VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, 0); + VdbeCoverage(v); } /* Create an Expr object representing an SQL expression like: @@ -92040,7 +107485,7 @@ static void fkScanChildren( assert( iCol>=0 ); zCol = pFKey->pFrom->aCol[iCol].zName; pRight = sqlite3Expr(db, TK_ID, zCol); - pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight, 0); + pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight); pWhere = sqlite3ExprAnd(db, pWhere, pEq); } @@ -92062,19 +107507,20 @@ static void fkScanChildren( if( HasRowid(pTab) ){ pLeft = exprTableRegister(pParse, pTab, regData, -1); pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, -1); - pNe = sqlite3PExpr(pParse, TK_NE, pLeft, pRight, 0); + pNe = sqlite3PExpr(pParse, TK_NE, pLeft, pRight); }else{ Expr *pEq, *pAll = 0; Index *pPk = sqlite3PrimaryKeyIndex(pTab); assert( pIdx!=0 ); for(i=0; inKeyCol; i++){ i16 iCol = pIdx->aiColumn[i]; + assert( iCol>=0 ); pLeft = exprTableRegister(pParse, pTab, regData, iCol); pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, iCol); - pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight, 0); + pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight); pAll = sqlite3ExprAnd(db, pAll, pEq); } - pNe = sqlite3PExpr(pParse, TK_NOT, pAll, 0, 0); + pNe = sqlite3PExpr(pParse, TK_NOT, pAll, 0); } pWhere = sqlite3ExprAnd(db, pWhere, pNe); } @@ -92086,13 +107532,9 @@ static void fkScanChildren( sqlite3ResolveExprNames(&sNameContext, pWhere); /* Create VDBE to loop through the entries in pSrc that match the WHERE - ** clause. If the constraint is not deferred, throw an exception for - ** each row found. Otherwise, for deferred constraints, increment the - ** deferred constraint counter by nIncr for each row selected. */ + ** clause. For each row found, increment either the deferred or immediate + ** foreign key constraint counter. */ pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0, 0); - if( nIncr>0 && pFKey->isDeferred==0 ){ - sqlite3ParseToplevel(pParse)->mayAbort = 1; - } sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr); if( pWInfo ){ sqlite3WhereEnd(pWInfo); @@ -92120,8 +107562,7 @@ static void fkScanChildren( ** table). */ SQLITE_PRIVATE FKey *sqlite3FkReferences(Table *pTab){ - int nName = sqlite3Strlen30(pTab->zName); - return (FKey *)sqlite3HashFind(&pTab->pSchema->fkeyHash, pTab->zName, nName); + return (FKey *)sqlite3HashFind(&pTab->pSchema->fkeyHash, pTab->zName); } /* @@ -92179,7 +107620,7 @@ SQLITE_PRIVATE void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTa } if( !p ) return; iSkip = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); + sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); VdbeCoverage(v); } pParse->disableTriggers = 1; @@ -92197,6 +107638,7 @@ SQLITE_PRIVATE void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTa */ if( (db->flags & SQLITE_DeferFKs)==0 ){ sqlite3VdbeAddOp2(v, OP_FkIfZero, 0, sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_FOREIGNKEY, OE_Abort, 0, P4_STATIC, P5_ConstraintFK); } @@ -92271,6 +107713,24 @@ static int fkParentIsModified( return 0; } +/* +** Return true if the parser passed as the first argument is being +** used to code a trigger that is really a "SET NULL" action belonging +** to trigger pFKey. +*/ +static int isSetNullAction(Parse *pParse, FKey *pFKey){ + Parse *pTop = sqlite3ParseToplevel(pParse); + if( pTop->pTriggerPrg ){ + Trigger *p = pTop->pTriggerPrg->pTrigger; + if( (p==pFKey->apTrigger[0] && pFKey->aAction[0]==OE_SetNull) + || (p==pFKey->apTrigger[1] && pFKey->aAction[1]==OE_SetNull) + ){ + return 1; + } + } + return 0; +} + /* ** This function is called when inserting, deleting or updating a row of ** table pTab to generate VDBE code to perform foreign key constraint @@ -92312,7 +107772,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( if( (db->flags&SQLITE_ForeignKeys)==0 ) return; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - zDb = db->aDb[iDb].zName; + zDb = db->aDb[iDb].zDbSName; /* Loop through all the foreign key constraints for which pTab is the ** child table (the table that the foreign key definition is part of). */ @@ -92323,7 +107783,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( int *aiCol; int iCol; int i; - int isIgnore = 0; + int bIgnore = 0; if( aChange && sqlite3_stricmp(pTab->zName, pFKey->zTo)!=0 @@ -92356,7 +107816,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1; for(i=0; inCol; i++){ int iReg = pFKey->aCol[i].iFrom + regOld + 1; - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump); + sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump); VdbeCoverage(v); } sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1); } @@ -92374,6 +107834,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( if( aiCol[i]==pTab->iPKey ){ aiCol[i] = -1; } + assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); #ifndef SQLITE_OMIT_AUTHORIZATION /* Request permission to read the parent key columns. If the ** authorization callback returns SQLITE_IGNORE, behave as if any @@ -92382,7 +107843,7 @@ SQLITE_PRIVATE void sqlite3FkCheck( int rcauth; char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zName; rcauth = sqlite3AuthReadCol(pParse, pTo->zName, zCol, iDb); - isIgnore = (rcauth==SQLITE_IGNORE); + bIgnore = (rcauth==SQLITE_IGNORE); } #endif } @@ -92397,12 +107858,18 @@ SQLITE_PRIVATE void sqlite3FkCheck( /* A row is being removed from the child table. Search for the parent. ** If the parent does not exist, removing the child row resolves an ** outstanding foreign key constraint violation. */ - fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1,isIgnore); + fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1, bIgnore); } - if( regNew!=0 ){ + if( regNew!=0 && !isSetNullAction(pParse, pFKey) ){ /* A row is being added to the child table. If a parent row cannot - ** be found, adding the child row has violated the FK constraint. */ - fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1,isIgnore); + ** be found, adding the child row has violated the FK constraint. + ** + ** If this operation is being performed as part of a trigger program + ** that is actually a "SET NULL" action belonging to this very + ** foreign key, then omit this scan altogether. As all child key + ** values are guaranteed to be NULL, it is not possible for adding + ** this row to cause an FK violation. */ + fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1, bIgnore); } sqlite3DbFree(db, aiFree); @@ -92423,8 +107890,8 @@ SQLITE_PRIVATE void sqlite3FkCheck( && !pParse->pToplevel && !pParse->isMultiWrite ){ assert( regOld==0 && regNew!=0 ); - /* Inserting a single row into a parent table cannot cause an immediate - ** foreign key violation. So do nothing in this case. */ + /* Inserting a single row into a parent table cannot cause (or fix) + ** an immediate foreign key violation. So do nothing in this case. */ continue; } @@ -92441,20 +107908,35 @@ SQLITE_PRIVATE void sqlite3FkCheck( struct SrcList_item *pItem = pSrc->a; pItem->pTab = pFKey->pFrom; pItem->zName = pFKey->pFrom->zName; - pItem->pTab->nRef++; + pItem->pTab->nTabRef++; pItem->iCursor = pParse->nTab++; if( regNew!=0 ){ fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regNew, -1); } if( regOld!=0 ){ - /* If there is a RESTRICT action configured for the current operation - ** on the parent table of this FK, then throw an exception - ** immediately if the FK constraint is violated, even if this is a - ** deferred trigger. That's what RESTRICT means. To defer checking - ** the constraint, the FK should specify NO ACTION (represented - ** using OE_None). NO ACTION is the default. */ + int eAction = pFKey->aAction[aChange!=0]; fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regOld, 1); + /* If this is a deferred FK constraint, or a CASCADE or SET NULL + ** action applies, then any foreign key violations caused by + ** removing the parent key will be rectified by the action trigger. + ** So do not set the "may-abort" flag in this case. + ** + ** Note 1: If the FK is declared "ON UPDATE CASCADE", then the + ** may-abort flag will eventually be set on this statement anyway + ** (when this function is called as part of processing the UPDATE + ** within the action trigger). + ** + ** Note 2: At first glance it may seem like SQLite could simply omit + ** all OP_FkCounter related scans when either CASCADE or SET NULL + ** applies. The trouble starts if the CASCADE or SET NULL action + ** trigger causes other triggers or action rules attached to the + ** child table to fire. In these cases the fk constraint counters + ** might be set incorrectly if any OP_FkCounter related scans are + ** omitted. */ + if( !pFKey->isDeferred && eAction!=OE_Cascade && eAction!=OE_SetNull ){ + sqlite3MayAbort(pParse); + } } pItem->zName = 0; sqlite3SrcListDelete(db, pSrc); @@ -92484,7 +107966,10 @@ SQLITE_PRIVATE u32 sqlite3FkOldmask( Index *pIdx = 0; sqlite3FkLocateIndex(pParse, pTab, p, &pIdx, 0); if( pIdx ){ - for(i=0; inKeyCol; i++) mask |= COLUMN_MASK(pIdx->aiColumn[i]); + for(i=0; inKeyCol; i++){ + assert( pIdx->aiColumn[i]>=0 ); + mask |= COLUMN_MASK(pIdx->aiColumn[i]); + } } } } @@ -92578,10 +108063,12 @@ static Trigger *fkActionTrigger( int iAction = (pChanges!=0); /* 1 for UPDATE, 0 for DELETE */ action = pFKey->aAction[iAction]; + if( action==OE_Restrict && (db->flags & SQLITE_DeferFKs) ){ + return 0; + } pTrigger = pFKey->apTrigger[iAction]; if( action!=OE_None && !pTrigger ){ - u8 enableLookaside; /* Copy of db->lookaside.bEnabled */ char const *zFrom; /* Name of child table */ int nFrom; /* Length in bytes of zFrom */ Index *pIdx = 0; /* Parent key index for this FK */ @@ -92606,11 +108093,11 @@ static Trigger *fkActionTrigger( iFromCol = aiCol ? aiCol[i] : pFKey->aCol[0].iFrom; assert( iFromCol>=0 ); - tToCol.z = pIdx ? pTab->aCol[pIdx->aiColumn[i]].zName : "oid"; - tFromCol.z = pFKey->pFrom->aCol[iFromCol].zName; - - tToCol.n = sqlite3Strlen30(tToCol.z); - tFromCol.n = sqlite3Strlen30(tFromCol.z); + assert( pIdx!=0 || (pTab->iPKey>=0 && pTab->iPKeynCol) ); + assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); + sqlite3TokenInit(&tToCol, + pTab->aCol[pIdx ? pIdx->aiColumn[i] : pTab->iPKey].zName); + sqlite3TokenInit(&tFromCol, pFKey->pFrom->aCol[iFromCol].zName); /* Create the expression "OLD.zToCol = zFromCol". It is important ** that the "OLD.zToCol" term is on the LHS of the = operator, so @@ -92618,11 +108105,10 @@ static Trigger *fkActionTrigger( ** parent table are used for the comparison. */ pEq = sqlite3PExpr(pParse, TK_EQ, sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tOld), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol) - , 0), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tFromCol) - , 0); + sqlite3ExprAlloc(db, TK_ID, &tOld, 0), + sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)), + sqlite3ExprAlloc(db, TK_ID, &tFromCol, 0) + ); pWhere = sqlite3ExprAnd(db, pWhere, pEq); /* For ON UPDATE, construct the next term of the WHEN clause. @@ -92633,14 +108119,12 @@ static Trigger *fkActionTrigger( if( pChanges ){ pEq = sqlite3PExpr(pParse, TK_IS, sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tOld), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol), - 0), + sqlite3ExprAlloc(db, TK_ID, &tOld, 0), + sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)), sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tNew), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol), - 0), - 0); + sqlite3ExprAlloc(db, TK_ID, &tNew, 0), + sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)) + ); pWhen = sqlite3ExprAnd(db, pWhen, pEq); } @@ -92648,18 +108132,17 @@ static Trigger *fkActionTrigger( Expr *pNew; if( action==OE_Cascade ){ pNew = sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tNew), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol) - , 0); + sqlite3ExprAlloc(db, TK_ID, &tNew, 0), + sqlite3ExprAlloc(db, TK_ID, &tToCol, 0)); }else if( action==OE_SetDflt ){ Expr *pDflt = pFKey->pFrom->aCol[iFromCol].pDflt; if( pDflt ){ pNew = sqlite3ExprDup(db, pDflt, 0); }else{ - pNew = sqlite3PExpr(pParse, TK_NULL, 0, 0, 0); + pNew = sqlite3ExprAlloc(db, TK_NULL, 0, 0); } }else{ - pNew = sqlite3PExpr(pParse, TK_NULL, 0, 0, 0); + pNew = sqlite3ExprAlloc(db, TK_NULL, 0, 0); } pList = sqlite3ExprListAppend(pParse, pList, pNew); sqlite3ExprListSetName(pParse, pList, &tFromCol, 0); @@ -92690,31 +108173,29 @@ static Trigger *fkActionTrigger( } /* Disable lookaside memory allocation */ - enableLookaside = db->lookaside.bEnabled; - db->lookaside.bEnabled = 0; + db->lookaside.bDisable++; pTrigger = (Trigger *)sqlite3DbMallocZero(db, sizeof(Trigger) + /* struct Trigger */ sizeof(TriggerStep) + /* Single step in trigger program */ - nFrom + 1 /* Space for pStep->target.z */ + nFrom + 1 /* Space for pStep->zTarget */ ); if( pTrigger ){ pStep = pTrigger->step_list = (TriggerStep *)&pTrigger[1]; - pStep->target.z = (char *)&pStep[1]; - pStep->target.n = nFrom; - memcpy((char *)pStep->target.z, zFrom, nFrom); + pStep->zTarget = (char *)&pStep[1]; + memcpy((char *)pStep->zTarget, zFrom, nFrom); pStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); pStep->pExprList = sqlite3ExprListDup(db, pList, EXPRDUP_REDUCE); pStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); if( pWhen ){ - pWhen = sqlite3PExpr(pParse, TK_NOT, pWhen, 0, 0); + pWhen = sqlite3PExpr(pParse, TK_NOT, pWhen, 0); pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE); } } /* Re-enable the lookaside buffer, if it was disabled earlier. */ - db->lookaside.bEnabled = enableLookaside; + db->lookaside.bDisable--; sqlite3ExprDelete(db, pWhere); sqlite3ExprDelete(db, pWhen); @@ -92788,7 +108269,8 @@ SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *db, Table *pTab){ FKey *pFKey; /* Iterator variable */ FKey *pNext; /* Copy of pFKey->pNextFrom */ - assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) ); + assert( db==0 || IsVirtual(pTab) + || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) ); for(pFKey=pTab->pFKey; pFKey; pFKey=pNext){ /* Remove the FK from the fkeyHash hash table. */ @@ -92798,7 +108280,7 @@ SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *db, Table *pTab){ }else{ void *p = (void *)pFKey->pNextTo; const char *z = (p ? pFKey->pNextTo->zTo : pFKey->zTo); - sqlite3HashInsert(&pTab->pSchema->fkeyHash, z, sqlite3Strlen30(z), p); + sqlite3HashInsert(&pTab->pSchema->fkeyHash, z, p); } if( pFKey->pNextTo ){ pFKey->pNextTo->pPrevTo = pFKey->pPrevTo; @@ -92838,6 +108320,7 @@ SQLITE_PRIVATE void sqlite3FkDelete(sqlite3 *db, Table *pTab){ ** This file contains C code routines that are called by the parser ** to handle INSERT statements in SQLite. */ +/* #include "sqliteInt.h" */ /* ** Generate code that will @@ -92867,7 +108350,7 @@ SQLITE_PRIVATE void sqlite3OpenTable( }else{ Index *pPk = sqlite3PrimaryKeyIndex(pTab); assert( pPk!=0 ); - assert( pPk->tnum=pTab->tnum ); + assert( pPk->tnum==pTab->tnum ); sqlite3VdbeAddOp3(v, opcode, iCur, pPk->tnum, iDb); sqlite3VdbeSetP4KeyInfo(pParse, pPk); VdbeComment((v, "%s", pTab->zName)); @@ -92881,20 +108364,20 @@ SQLITE_PRIVATE void sqlite3OpenTable( ** ** Character Column affinity ** ------------------------------ -** 'a' TEXT -** 'b' NONE -** 'c' NUMERIC -** 'd' INTEGER -** 'e' REAL +** 'A' BLOB +** 'B' TEXT +** 'C' NUMERIC +** 'D' INTEGER +** 'F' REAL ** -** An extra 'd' is appended to the end of the string to cover the +** An extra 'D' is appended to the end of the string to cover the ** rowid that appears as the last column in every index. ** ** Memory for the buffer containing the column index affinity string ** is managed along with the rest of the Index structure. It will be ** released when sqlite3DeleteIndex() is called. */ -SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *v, Index *pIdx){ +SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){ if( !pIdx->zColAff ){ /* The first time a column affinity string for a particular index is ** required, it is allocated and populated here. It is then stored as @@ -92906,15 +108389,25 @@ SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *v, Index *pIdx){ */ int n; Table *pTab = pIdx->pTable; - sqlite3 *db = sqlite3VdbeDb(v); pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+1); if( !pIdx->zColAff ){ - db->mallocFailed = 1; + sqlite3OomFault(db); return 0; } for(n=0; nnColumn; n++){ i16 x = pIdx->aiColumn[n]; - pIdx->zColAff[n] = x<0 ? SQLITE_AFF_INTEGER : pTab->aCol[x].affinity; + if( x>=0 ){ + pIdx->zColAff[n] = pTab->aCol[x].affinity; + }else if( x==XN_ROWID ){ + pIdx->zColAff[n] = SQLITE_AFF_INTEGER; + }else{ + char aff; + assert( x==XN_EXPR ); + assert( pIdx->aColExpr!=0 ); + aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr); + if( aff==0 ) aff = SQLITE_AFF_BLOB; + pIdx->zColAff[n] = aff; + } } pIdx->zColAff[n] = 0; } @@ -92923,57 +108416,61 @@ SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *v, Index *pIdx){ } /* -** Set P4 of the most recently inserted opcode to a column affinity -** string for table pTab. A column affinity string has one character -** for each column indexed by the index, according to the affinity of the -** column: +** Compute the affinity string for table pTab, if it has not already been +** computed. As an optimization, omit trailing SQLITE_AFF_BLOB affinities. +** +** If the affinity exists (if it is no entirely SQLITE_AFF_BLOB values) and +** if iReg>0 then code an OP_Affinity opcode that will set the affinities +** for register iReg and following. Or if affinities exists and iReg==0, +** then just set the P4 operand of the previous opcode (which should be +** an OP_MakeRecord) to the affinity string. +** +** A column affinity string has one character per column: ** ** Character Column affinity ** ------------------------------ -** 'a' TEXT -** 'b' NONE -** 'c' NUMERIC -** 'd' INTEGER -** 'e' REAL +** 'A' BLOB +** 'B' TEXT +** 'C' NUMERIC +** 'D' INTEGER +** 'E' REAL */ -SQLITE_PRIVATE void sqlite3TableAffinityStr(Vdbe *v, Table *pTab){ - /* The first time a column affinity string for a particular table - ** is required, it is allocated and populated here. It is then - ** stored as a member of the Table structure for subsequent use. - ** - ** The column affinity string will eventually be deleted by - ** sqlite3DeleteTable() when the Table structure itself is cleaned up. - */ - if( !pTab->zColAff ){ - char *zColAff; - int i; +SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe *v, Table *pTab, int iReg){ + int i; + char *zColAff = pTab->zColAff; + if( zColAff==0 ){ sqlite3 *db = sqlite3VdbeDb(v); - zColAff = (char *)sqlite3DbMallocRaw(0, pTab->nCol+1); if( !zColAff ){ - db->mallocFailed = 1; + sqlite3OomFault(db); return; } for(i=0; inCol; i++){ zColAff[i] = pTab->aCol[i].affinity; } - zColAff[pTab->nCol] = '\0'; - + do{ + zColAff[i--] = 0; + }while( i>=0 && zColAff[i]==SQLITE_AFF_BLOB ); pTab->zColAff = zColAff; } - - sqlite3VdbeChangeP4(v, -1, pTab->zColAff, P4_TRANSIENT); + i = sqlite3Strlen30(zColAff); + if( i ){ + if( iReg ){ + sqlite3VdbeAddOp4(v, OP_Affinity, iReg, i, 0, zColAff, i); + }else{ + sqlite3VdbeChangeP4(v, -1, zColAff, i); + } + } } /* ** Return non-zero if the table pTab in database iDb or any of its indices -** have been opened at any point in the VDBE program beginning at location -** iStartAddr throught the end of the program. This is used to see if +** have been opened at any point in the VDBE program. This is used to see if ** a statement of the form "INSERT INTO SELECT ..." can -** run without using temporary table for the results of the SELECT. +** run without using a temporary table for the results of the SELECT. */ -static int readsTable(Parse *p, int iStartAddr, int iDb, Table *pTab){ +static int readsTable(Parse *p, int iDb, Table *pTab){ Vdbe *v = sqlite3GetVdbe(p); int i; int iEnd = sqlite3VdbeCurrentAddr(v); @@ -92981,7 +108478,7 @@ static int readsTable(Parse *p, int iStartAddr, int iDb, Table *pTab){ VTable *pVTab = IsVirtual(pTab) ? sqlite3GetVTable(p->db, pTab) : 0; #endif - for(i=iStartAddr; iopcode==OP_OpenRead && pOp->p3==iDb ){ @@ -93011,7 +108508,9 @@ static int readsTable(Parse *p, int iStartAddr, int iDb, Table *pTab){ /* ** Locate or create an AutoincInfo structure associated with table pTab ** which is in database iDb. Return the register number for the register -** that holds the maximum rowid. +** that holds the maximum rowid. Return zero if pTab is not an AUTOINCREMENT +** table. (Also return zero when doing a VACUUM since we do not want to +** update the AUTOINCREMENT counters during a VACUUM.) ** ** There is at most one AutoincInfo structure per table even if the ** same table is autoincremented multiple times due to inserts within @@ -93034,14 +108533,16 @@ static int autoIncBegin( Table *pTab /* The table we are writing to */ ){ int memId = 0; /* Register holding maximum rowid */ - if( pTab->tabFlags & TF_Autoincrement ){ + if( (pTab->tabFlags & TF_Autoincrement)!=0 + && (pParse->db->flags & SQLITE_Vacuum)==0 + ){ Parse *pToplevel = sqlite3ParseToplevel(pParse); AutoincInfo *pInfo; pInfo = pToplevel->pAinc; while( pInfo && pInfo->pTab!=pTab ){ pInfo = pInfo->pNext; } if( pInfo==0 ){ - pInfo = sqlite3DbMallocRaw(pParse->db, sizeof(*pInfo)); + pInfo = sqlite3DbMallocRawNN(pParse->db, sizeof(*pInfo)); if( pInfo==0 ) return 0; pInfo->pNext = pToplevel->pAinc; pToplevel->pAinc = pInfo; @@ -93065,43 +108566,55 @@ SQLITE_PRIVATE void sqlite3AutoincrementBegin(Parse *pParse){ sqlite3 *db = pParse->db; /* The database connection */ Db *pDb; /* Database only autoinc table */ int memId; /* Register holding max rowid */ - int addr; /* A VDBE address */ Vdbe *v = pParse->pVdbe; /* VDBE under construction */ /* This routine is never called during trigger-generation. It is ** only called from the top-level */ assert( pParse->pTriggerTab==0 ); - assert( pParse==sqlite3ParseToplevel(pParse) ); + assert( sqlite3IsToplevel(pParse) ); assert( v ); /* We failed long ago if this is not so */ for(p = pParse->pAinc; p; p = p->pNext){ + static const int iLn = VDBE_OFFSET_LINENO(2); + static const VdbeOpList autoInc[] = { + /* 0 */ {OP_Null, 0, 0, 0}, + /* 1 */ {OP_Rewind, 0, 9, 0}, + /* 2 */ {OP_Column, 0, 0, 0}, + /* 3 */ {OP_Ne, 0, 7, 0}, + /* 4 */ {OP_Rowid, 0, 0, 0}, + /* 5 */ {OP_Column, 0, 1, 0}, + /* 6 */ {OP_Goto, 0, 9, 0}, + /* 7 */ {OP_Next, 0, 2, 0}, + /* 8 */ {OP_Integer, 0, 0, 0}, + /* 9 */ {OP_Close, 0, 0, 0} + }; + VdbeOp *aOp; pDb = &db->aDb[p->iDb]; memId = p->regCtr; assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) ); sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenRead); - sqlite3VdbeAddOp3(v, OP_Null, 0, memId, memId+1); - addr = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp4(v, OP_String8, 0, memId-1, 0, p->pTab->zName, 0); - sqlite3VdbeAddOp2(v, OP_Rewind, 0, addr+9); - sqlite3VdbeAddOp3(v, OP_Column, 0, 0, memId); - sqlite3VdbeAddOp3(v, OP_Ne, memId-1, addr+7, memId); - sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); - sqlite3VdbeAddOp2(v, OP_Rowid, 0, memId+1); - sqlite3VdbeAddOp3(v, OP_Column, 0, 1, memId); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addr+9); - sqlite3VdbeAddOp2(v, OP_Next, 0, addr+2); - sqlite3VdbeAddOp2(v, OP_Integer, 0, memId); - sqlite3VdbeAddOp0(v, OP_Close); + sqlite3VdbeLoadString(v, memId-1, p->pTab->zName); + aOp = sqlite3VdbeAddOpList(v, ArraySize(autoInc), autoInc, iLn); + if( aOp==0 ) break; + aOp[0].p2 = memId; + aOp[0].p3 = memId+1; + aOp[2].p3 = memId; + aOp[3].p1 = memId-1; + aOp[3].p3 = memId; + aOp[3].p5 = SQLITE_JUMPIFNULL; + aOp[4].p2 = memId+1; + aOp[5].p3 = memId; + aOp[8].p2 = memId; } } /* ** Update the maximum rowid for an autoincrement calculation. ** -** This routine should be called when the top of the stack holds a +** This routine should be called when the regRowid register holds a ** new rowid that is about to be inserted. If that new rowid is ** larger than the maximum rowid in the memId memory cell, then the -** memory cell is updated. The stack is unchanged. +** memory cell is updated. */ static void autoIncStep(Parse *pParse, int memId, int regRowid){ if( memId>0 ){ @@ -93116,40 +108629,44 @@ static void autoIncStep(Parse *pParse, int memId, int regRowid){ ** table (either directly or through triggers) needs to call this ** routine just before the "exit" code. */ -SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse){ +static SQLITE_NOINLINE void autoIncrementEnd(Parse *pParse){ AutoincInfo *p; Vdbe *v = pParse->pVdbe; sqlite3 *db = pParse->db; assert( v ); for(p = pParse->pAinc; p; p = p->pNext){ + static const int iLn = VDBE_OFFSET_LINENO(2); + static const VdbeOpList autoIncEnd[] = { + /* 0 */ {OP_NotNull, 0, 2, 0}, + /* 1 */ {OP_NewRowid, 0, 0, 0}, + /* 2 */ {OP_MakeRecord, 0, 2, 0}, + /* 3 */ {OP_Insert, 0, 0, 0}, + /* 4 */ {OP_Close, 0, 0, 0} + }; + VdbeOp *aOp; Db *pDb = &db->aDb[p->iDb]; - int j1, j2, j3, j4, j5; int iRec; int memId = p->regCtr; iRec = sqlite3GetTempReg(pParse); assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) ); sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenWrite); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1); - j2 = sqlite3VdbeAddOp0(v, OP_Rewind); - j3 = sqlite3VdbeAddOp3(v, OP_Column, 0, 0, iRec); - j4 = sqlite3VdbeAddOp3(v, OP_Eq, memId-1, 0, iRec); - sqlite3VdbeAddOp2(v, OP_Next, 0, j3); - sqlite3VdbeJumpHere(v, j2); - sqlite3VdbeAddOp2(v, OP_NewRowid, 0, memId+1); - j5 = sqlite3VdbeAddOp0(v, OP_Goto); - sqlite3VdbeJumpHere(v, j4); - sqlite3VdbeAddOp2(v, OP_Rowid, 0, memId+1); - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeJumpHere(v, j5); - sqlite3VdbeAddOp3(v, OP_MakeRecord, memId-1, 2, iRec); - sqlite3VdbeAddOp3(v, OP_Insert, 0, iRec, memId+1); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - sqlite3VdbeAddOp0(v, OP_Close); + aOp = sqlite3VdbeAddOpList(v, ArraySize(autoIncEnd), autoIncEnd, iLn); + if( aOp==0 ) break; + aOp[0].p1 = memId+1; + aOp[1].p2 = memId+1; + aOp[2].p1 = memId-1; + aOp[2].p3 = iRec; + aOp[3].p2 = iRec; + aOp[3].p3 = memId+1; + aOp[3].p5 = OPFLAG_APPEND; sqlite3ReleaseTempReg(pParse, iRec); } } +SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse){ + if( pParse->pAinc ) autoIncrementEnd(pParse); +} #else /* ** If SQLITE_OMIT_AUTOINCREMENT is defined, then the three routines @@ -93160,97 +108677,6 @@ SQLITE_PRIVATE void sqlite3AutoincrementEnd(Parse *pParse){ #endif /* SQLITE_OMIT_AUTOINCREMENT */ -/* -** Generate code for a co-routine that will evaluate a subquery one -** row at a time. -** -** The pSelect parameter is the subquery that the co-routine will evaluation. -** Information about the location of co-routine and the registers it will use -** is returned by filling in the pDest object. -** -** Registers are allocated as follows: -** -** pDest->iSDParm The register holding the next entry-point of the -** co-routine. Run the co-routine to its next breakpoint -** by calling "OP_Yield $X" where $X is pDest->iSDParm. -** -** pDest->iSDParm+1 The register holding the "completed" flag for the -** co-routine. This register is 0 if the previous Yield -** generated a new result row, or 1 if the subquery -** has completed. If the Yield is called again -** after this register becomes 1, then the VDBE will -** halt with an SQLITE_INTERNAL error. -** -** pDest->iSdst First result register. -** -** pDest->nSdst Number of result registers. -** -** This routine handles all of the register allocation and fills in the -** pDest structure appropriately. -** -** Here is a schematic of the generated code assuming that X is the -** co-routine entry-point register reg[pDest->iSDParm], that EOF is the -** completed flag reg[pDest->iSDParm+1], and R and S are the range of -** registers that hold the result set, reg[pDest->iSdst] through -** reg[pDest->iSdst+pDest->nSdst-1]: -** -** X <- A -** EOF <- 0 -** goto B -** A: setup for the SELECT -** loop rows in the SELECT -** load results into registers R..S -** yield X -** end loop -** cleanup after the SELECT -** EOF <- 1 -** yield X -** halt-error -** B: -** -** To use this subroutine, the caller generates code as follows: -** -** [ Co-routine generated by this subroutine, shown above ] -** S: yield X -** if EOF goto E -** if skip this row, goto C -** if terminate loop, goto E -** deal with this row -** C: goto S -** E: -*/ -SQLITE_PRIVATE int sqlite3CodeCoroutine(Parse *pParse, Select *pSelect, SelectDest *pDest){ - int regYield; /* Register holding co-routine entry-point */ - int regEof; /* Register holding co-routine completion flag */ - int addrTop; /* Top of the co-routine */ - int j1; /* Jump instruction */ - int rc; /* Result code */ - Vdbe *v; /* VDBE under construction */ - - regYield = ++pParse->nMem; - regEof = ++pParse->nMem; - v = sqlite3GetVdbe(pParse); - addrTop = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_Integer, addrTop+2, regYield); /* X <- A */ - VdbeComment((v, "Co-routine entry point")); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEof); /* EOF <- 0 */ - VdbeComment((v, "Co-routine completion flag")); - sqlite3SelectDestInit(pDest, SRT_Coroutine, regYield); - j1 = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0); - rc = sqlite3Select(pParse, pSelect, pDest); - assert( pParse->nErr==0 || rc ); - if( pParse->db->mallocFailed && rc==SQLITE_OK ) rc = SQLITE_NOMEM; - if( rc ) return rc; - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEof); /* EOF <- 1 */ - sqlite3VdbeAddOp1(v, OP_Yield, regYield); /* yield X */ - sqlite3VdbeAddOp2(v, OP_Halt, SQLITE_INTERNAL, OE_Abort); - VdbeComment((v, "End of coroutine")); - sqlite3VdbeJumpHere(v, j1); /* label B: */ - return rc; -} - - - /* Forward declaration */ static int xferOptimization( Parse *pParse, /* Parser context */ @@ -93263,20 +108689,23 @@ static int xferOptimization( /* ** This routine is called to handle SQL of the following forms: ** -** insert into TABLE (IDLIST) values(EXPRLIST) +** insert into TABLE (IDLIST) values(EXPRLIST),(EXPRLIST),... ** insert into TABLE (IDLIST) select +** insert into TABLE (IDLIST) default values ** ** The IDLIST following the table name is always optional. If omitted, -** then a list of all columns for the table is substituted. The IDLIST -** appears in the pColumn parameter. pColumn is NULL if IDLIST is omitted. +** then a list of all (non-hidden) columns for the table is substituted. +** The IDLIST appears in the pColumn parameter. pColumn is NULL if IDLIST +** is omitted. ** -** The pList parameter holds EXPRLIST in the first form of the INSERT -** statement above, and pSelect is NULL. For the second form, pList is -** NULL and pSelect is a pointer to the select statement used to generate -** data for the insert. +** For the pSelect parameter holds the values to be inserted for the +** first two forms shown above. A VALUES clause is really just short-hand +** for a SELECT statement that omits the FROM clause and everything else +** that follows. If the pSelect parameter is NULL, that means that the +** DEFAULT VALUES form of the INSERT statement is intended. ** ** The code generated follows one of four templates. For a simple -** insert with data coming from a VALUES clause, the code executes +** insert with data coming from a single-row VALUES clause, the code executes ** once straight down through. Pseudo-code follows (we call this ** the "1st template"): ** @@ -93313,7 +108742,6 @@ static int xferOptimization( ** and the SELECT clause does not read from
    at any time. ** The generated code follows this template: ** -** EOF <- 0 ** X <- A ** goto B ** A: setup for the SELECT @@ -93322,12 +108750,9 @@ static int xferOptimization( ** yield X ** end loop ** cleanup after the SELECT -** EOF <- 1 -** yield X -** goto A +** end-coroutine X ** B: open write cursor to
    and its indices -** C: yield X -** if EOF goto D +** C: yield X, at EOF goto D ** insert the select result into
    from R..R+n ** goto C ** D: cleanup @@ -93335,10 +108760,9 @@ static int xferOptimization( ** The 4th template is used if the insert statement takes its ** values from a SELECT but the data is being inserted into a table ** that is also read as part of the SELECT. In the third form, -** we have to use a intermediate table to store the results of +** we have to use an intermediate table to store the results of ** the select. The template is like this: ** -** EOF <- 0 ** X <- A ** goto B ** A: setup for the SELECT @@ -93347,12 +108771,9 @@ static int xferOptimization( ** yield X ** end loop ** cleanup after the SELECT -** EOF <- 1 -** yield X -** halt-error +** end co-routine R ** B: open temp table -** L: yield X -** if EOF goto M +** L: yield X, at EOF goto M ** insert row from R..R+n into temp table ** goto L ** M: open write cursor to
    and its indices @@ -93372,8 +108793,7 @@ SQLITE_PRIVATE void sqlite3Insert( sqlite3 *db; /* The main database structure */ Table *pTab; /* The table to insert into. aka TABLE */ char *zTab; /* Name of the table into which we are inserting */ - const char *zDb; /* Name of the database holding this table */ - int i, j, idx; /* Loop counters */ + int i, j; /* Loop counters */ Vdbe *v; /* Generate code into this virtual machine */ Index *pIdx; /* For looping over indices of the table */ int nColumn; /* Number of columns in the data */ @@ -93382,16 +108802,15 @@ SQLITE_PRIVATE void sqlite3Insert( int iIdxCur = 0; /* First index cursor */ int ipkColumn = -1; /* Column that is the INTEGER PRIMARY KEY */ int endOfLoop; /* Label for the end of the insertion loop */ - int useTempTable = 0; /* Store SELECT results in intermediate table */ int srcTab = 0; /* Data comes from this temporary cursor if >=0 */ int addrInsTop = 0; /* Jump to label "D" */ int addrCont = 0; /* Top of insert loop. Label "C" in templates 3 and 4 */ - int addrSelect = 0; /* Address of coroutine that implements the SELECT */ SelectDest dest; /* Destination for SELECT on rhs of INSERT */ int iDb; /* Index of database holding TABLE */ - Db *pDb; /* The database containing table being inserted into */ - int appendFlag = 0; /* True if the insert is likely to be an append */ - int withoutRowid; /* 0 for normal table. 1 for WITHOUT ROWID table */ + u8 useTempTable = 0; /* Store SELECT results in intermediate table */ + u8 appendFlag = 0; /* True if the insert is likely to be an append */ + u8 withoutRowid; /* 0 for normal table. 1 for WITHOUT ROWID table */ + u8 bIdListInOrder; /* True if IDLIST is in table order */ ExprList *pList = 0; /* List of VALUES() to be inserted */ /* Register allocations */ @@ -93401,7 +108820,6 @@ SQLITE_PRIVATE void sqlite3Insert( int regIns; /* Block of regs holding rowid+data being inserted */ int regRowid; /* registers holding insert rowid */ int regData; /* register holding first column to insert */ - int regEof = 0; /* Register recording end of SELECT data */ int *aRegIdx = 0; /* One register allocated to each index */ #ifndef SQLITE_OMIT_TRIGGER @@ -93417,8 +108835,8 @@ SQLITE_PRIVATE void sqlite3Insert( } /* If the Select object is really just a simple VALUES() list with a - ** single row values (the common case) then keep that one row of values - ** and go ahead and discard the Select object + ** single row (the common case) then keep that one row of values + ** and discard the other (unused) parts of the pSelect object */ if( pSelect && (pSelect->selFlags & SF_Values)!=0 && pSelect->pPrior==0 ){ pList = pSelect->pEList; @@ -93438,9 +108856,8 @@ SQLITE_PRIVATE void sqlite3Insert( } iDb = sqlite3SchemaToIndex(db, pTab->pSchema); assert( iDbnDb ); - pDb = &db->aDb[iDb]; - zDb = pDb->zName; - if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, zDb) ){ + if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, + db->aDb[iDb].zDbSName) ){ goto insert_cleanup; } withoutRowid = !HasRowid(pTab); @@ -93504,101 +108921,16 @@ SQLITE_PRIVATE void sqlite3Insert( */ regAutoinc = autoIncBegin(pParse, iDb, pTab); - /* Figure out how many columns of data are supplied. If the data - ** is coming from a SELECT statement, then generate a co-routine that - ** produces a single row of the SELECT on each invocation. The - ** co-routine is the common header to the 3rd and 4th templates. - */ - if( pSelect ){ - /* Data is coming from a SELECT. Generate a co-routine to run the SELECT */ - int rc = sqlite3CodeCoroutine(pParse, pSelect, &dest); - if( rc ) goto insert_cleanup; - - regEof = dest.iSDParm + 1; - regFromSelect = dest.iSdst; - assert( pSelect->pEList ); - nColumn = pSelect->pEList->nExpr; - assert( dest.nSdst==nColumn ); - - /* Set useTempTable to TRUE if the result of the SELECT statement - ** should be written into a temporary table (template 4). Set to - ** FALSE if each output row of the SELECT can be written directly into - ** the destination table (template 3). - ** - ** A temp table must be used if the table being updated is also one - ** of the tables being read by the SELECT statement. Also use a - ** temp table in the case of row triggers. - */ - if( pTrigger || readsTable(pParse, addrSelect, iDb, pTab) ){ - useTempTable = 1; - } - - if( useTempTable ){ - /* Invoke the coroutine to extract information from the SELECT - ** and add it to a transient table srcTab. The code generated - ** here is from the 4th template: - ** - ** B: open temp table - ** L: yield X - ** if EOF goto M - ** insert row from R..R+n into temp table - ** goto L - ** M: ... - */ - int regRec; /* Register to hold packed record */ - int regTempRowid; /* Register to hold temp table ROWID */ - int addrTop; /* Label "L" */ - int addrIf; /* Address of jump to M */ - - srcTab = pParse->nTab++; - regRec = sqlite3GetTempReg(pParse); - regTempRowid = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_OpenEphemeral, srcTab, nColumn); - addrTop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); - addrIf = sqlite3VdbeAddOp1(v, OP_If, regEof); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regFromSelect, nColumn, regRec); - sqlite3VdbeAddOp2(v, OP_NewRowid, srcTab, regTempRowid); - sqlite3VdbeAddOp3(v, OP_Insert, srcTab, regRec, regTempRowid); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop); - sqlite3VdbeJumpHere(v, addrIf); - sqlite3ReleaseTempReg(pParse, regRec); - sqlite3ReleaseTempReg(pParse, regTempRowid); - } - }else{ - /* This is the case if the data for the INSERT is coming from a VALUES - ** clause - */ - NameContext sNC; - memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pParse; - srcTab = -1; - assert( useTempTable==0 ); - nColumn = pList ? pList->nExpr : 0; - for(i=0; ia[i].pExpr) ){ - goto insert_cleanup; - } - } - } - - /* Make sure the number of columns in the source data matches the number - ** of columns to be inserted into the table. + /* Allocate registers for holding the rowid of the new row, + ** the content of the new row, and the assembled row record. */ + regRowid = regIns = pParse->nMem+1; + pParse->nMem += pTab->nCol + 1; if( IsVirtual(pTab) ){ - for(i=0; inCol; i++){ - nHidden += (IsHiddenColumn(&pTab->aCol[i]) ? 1 : 0); - } - } - if( pColumn==0 && nColumn && nColumn!=(pTab->nCol-nHidden) ){ - sqlite3ErrorMsg(pParse, - "table %S has %d columns but %d values were supplied", - pTabList, 0, pTab->nCol-nHidden, nColumn); - goto insert_cleanup; - } - if( pColumn!=0 && nColumn!=pColumn->nId ){ - sqlite3ErrorMsg(pParse, "%d values for %d columns", nColumn, pColumn->nId); - goto insert_cleanup; + regRowid++; + pParse->nMem++; } + regData = regRowid+1; /* If the INSERT statement included an IDLIST term, then make sure ** all elements of the IDLIST really are columns of the table and @@ -93611,6 +108943,7 @@ SQLITE_PRIVATE void sqlite3Insert( ** is appears in the original table. (The index of the INTEGER ** PRIMARY KEY in the original table is pTab->iPKey.) */ + bIdListInOrder = (pTab->tabFlags & TF_OOOHidden)==0; if( pColumn ){ for(i=0; inId; i++){ pColumn->a[i].idx = -1; @@ -93619,6 +108952,7 @@ SQLITE_PRIVATE void sqlite3Insert( for(j=0; jnCol; j++){ if( sqlite3StrICmp(pColumn->a[i].zName, pTab->aCol[j].zName)==0 ){ pColumn->a[i].idx = j; + if( i!=j ) bIdListInOrder = 0; if( j==pTab->iPKey ){ ipkColumn = i; assert( !withoutRowid ); } @@ -93628,6 +108962,7 @@ SQLITE_PRIVATE void sqlite3Insert( if( j>=pTab->nCol ){ if( sqlite3IsRowid(pColumn->a[i].zName) && !withoutRowid ){ ipkColumn = i; + bIdListInOrder = 0; }else{ sqlite3ErrorMsg(pParse, "table %S has no column named %s", pTabList, 0, pColumn->a[i].zName); @@ -93638,6 +108973,92 @@ SQLITE_PRIVATE void sqlite3Insert( } } + /* Figure out how many columns of data are supplied. If the data + ** is coming from a SELECT statement, then generate a co-routine that + ** produces a single row of the SELECT on each invocation. The + ** co-routine is the common header to the 3rd and 4th templates. + */ + if( pSelect ){ + /* Data is coming from a SELECT or from a multi-row VALUES clause. + ** Generate a co-routine to run the SELECT. */ + int regYield; /* Register holding co-routine entry-point */ + int addrTop; /* Top of the co-routine */ + int rc; /* Result code */ + + regYield = ++pParse->nMem; + addrTop = sqlite3VdbeCurrentAddr(v) + 1; + sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, addrTop); + sqlite3SelectDestInit(&dest, SRT_Coroutine, regYield); + dest.iSdst = bIdListInOrder ? regData : 0; + dest.nSdst = pTab->nCol; + rc = sqlite3Select(pParse, pSelect, &dest); + regFromSelect = dest.iSdst; + if( rc || db->mallocFailed || pParse->nErr ) goto insert_cleanup; + sqlite3VdbeEndCoroutine(v, regYield); + sqlite3VdbeJumpHere(v, addrTop - 1); /* label B: */ + assert( pSelect->pEList ); + nColumn = pSelect->pEList->nExpr; + + /* Set useTempTable to TRUE if the result of the SELECT statement + ** should be written into a temporary table (template 4). Set to + ** FALSE if each output row of the SELECT can be written directly into + ** the destination table (template 3). + ** + ** A temp table must be used if the table being updated is also one + ** of the tables being read by the SELECT statement. Also use a + ** temp table in the case of row triggers. + */ + if( pTrigger || readsTable(pParse, iDb, pTab) ){ + useTempTable = 1; + } + + if( useTempTable ){ + /* Invoke the coroutine to extract information from the SELECT + ** and add it to a transient table srcTab. The code generated + ** here is from the 4th template: + ** + ** B: open temp table + ** L: yield X, goto M at EOF + ** insert row from R..R+n into temp table + ** goto L + ** M: ... + */ + int regRec; /* Register to hold packed record */ + int regTempRowid; /* Register to hold temp table ROWID */ + int addrL; /* Label "L" */ + + srcTab = pParse->nTab++; + regRec = sqlite3GetTempReg(pParse); + regTempRowid = sqlite3GetTempReg(pParse); + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, srcTab, nColumn); + addrL = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regFromSelect, nColumn, regRec); + sqlite3VdbeAddOp2(v, OP_NewRowid, srcTab, regTempRowid); + sqlite3VdbeAddOp3(v, OP_Insert, srcTab, regRec, regTempRowid); + sqlite3VdbeGoto(v, addrL); + sqlite3VdbeJumpHere(v, addrL); + sqlite3ReleaseTempReg(pParse, regRec); + sqlite3ReleaseTempReg(pParse, regTempRowid); + } + }else{ + /* This is the case if the data for the INSERT is coming from a + ** single-row VALUES clause + */ + NameContext sNC; + memset(&sNC, 0, sizeof(sNC)); + sNC.pParse = pParse; + srcTab = -1; + assert( useTempTable==0 ); + if( pList ){ + nColumn = pList->nExpr; + if( sqlite3ResolveExprListNames(&sNC, pList) ){ + goto insert_cleanup; + } + }else{ + nColumn = 0; + } + } + /* If there is no IDLIST term but the table has an integer primary ** key, the set the ipkColumn variable to the integer primary key ** column index in the original table definition. @@ -93645,6 +109066,23 @@ SQLITE_PRIVATE void sqlite3Insert( if( pColumn==0 && nColumn>0 ){ ipkColumn = pTab->iPKey; } + + /* Make sure the number of columns in the source data matches the number + ** of columns to be inserted into the table. + */ + for(i=0; inCol; i++){ + nHidden += (IsHiddenColumn(&pTab->aCol[i]) ? 1 : 0); + } + if( pColumn==0 && nColumn && nColumn!=(pTab->nCol-nHidden) ){ + sqlite3ErrorMsg(pParse, + "table %S has %d columns but %d values were supplied", + pTabList, 0, pTab->nCol-nHidden, nColumn); + goto insert_cleanup; + } + if( pColumn!=0 && nColumn!=pColumn->nId ){ + sqlite3ErrorMsg(pParse, "%d values for %d columns", nColumn, pColumn->nId); + goto insert_cleanup; + } /* Initialize the count of rows to be inserted */ @@ -93656,14 +109094,16 @@ SQLITE_PRIVATE void sqlite3Insert( /* If this is not a view, open the table and and all indices */ if( !isView ){ int nIdx; - nIdx = sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, -1, 0, + nIdx = sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, -1, 0, &iDataCur, &iIdxCur); - aRegIdx = sqlite3DbMallocRaw(db, sizeof(int)*(nIdx+1)); + aRegIdx = sqlite3DbMallocRawNN(db, sizeof(int)*(nIdx+1)); if( aRegIdx==0 ){ goto insert_cleanup; } - for(i=0; ipIndex; ipNext, i++){ + assert( pIdx ); aRegIdx[i] = ++pParse->nMem; + pParse->nMem += pIdx->nColumn; } } @@ -93672,39 +109112,27 @@ SQLITE_PRIVATE void sqlite3Insert( /* This block codes the top of loop only. The complete loop is the ** following pseudocode (template 4): ** - ** rewind temp table + ** rewind temp table, if empty goto D ** C: loop over rows of intermediate table ** transfer values form intermediate table into
    ** end loop ** D: ... */ - addrInsTop = sqlite3VdbeAddOp1(v, OP_Rewind, srcTab); + addrInsTop = sqlite3VdbeAddOp1(v, OP_Rewind, srcTab); VdbeCoverage(v); addrCont = sqlite3VdbeCurrentAddr(v); }else if( pSelect ){ /* This block codes the top of loop only. The complete loop is the ** following pseudocode (template 3): ** - ** C: yield X - ** if EOF goto D + ** C: yield X, at EOF goto D ** insert the select result into
    from R..R+n ** goto C ** D: ... */ - addrCont = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); - addrInsTop = sqlite3VdbeAddOp1(v, OP_If, regEof); + addrInsTop = addrCont = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); + VdbeCoverage(v); } - /* Allocate registers for holding the rowid of the new row, - ** the content of the new row, and the assemblied row record. - */ - regRowid = regIns = pParse->nMem+1; - pParse->nMem += pTab->nCol + 1; - if( IsVirtual(pTab) ){ - regRowid++; - pParse->nMem++; - } - regData = regRowid+1; - /* Run the BEFORE and INSTEAD OF triggers, if there are any */ endOfLoop = sqlite3VdbeMakeLabel(v); @@ -93720,7 +109148,7 @@ SQLITE_PRIVATE void sqlite3Insert( if( ipkColumn<0 ){ sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); }else{ - int j1; + int addr1; assert( !withoutRowid ); if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regCols); @@ -93728,10 +109156,10 @@ SQLITE_PRIVATE void sqlite3Insert( assert( pSelect==0 ); /* Otherwise useTempTable is true */ sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regCols); } - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regCols); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regCols); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeAddOp1(v, OP_MustBeInt, regCols); + sqlite3VdbeJumpHere(v, addr1); + sqlite3VdbeAddOp1(v, OP_MustBeInt, regCols); VdbeCoverage(v); } /* Cannot have triggers on a virtual table. If it were possible, @@ -93741,15 +109169,14 @@ SQLITE_PRIVATE void sqlite3Insert( /* Create the new column data */ - for(i=0; inCol; i++){ - if( pColumn==0 ){ - j = i; - }else{ + for(i=j=0; inCol; i++){ + if( pColumn ){ for(j=0; jnId; j++){ if( pColumn->a[j].idx==i ) break; } } - if( (!useTempTable && !pList) || (pColumn && j>=pColumn->nId) ){ + if( (!useTempTable && !pList) || (pColumn && j>=pColumn->nId) + || (pColumn==0 && IsOrdinaryHiddenColumn(&pTab->aCol[i])) ){ sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regCols+i+1); }else if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, regCols+i+1); @@ -93757,6 +109184,7 @@ SQLITE_PRIVATE void sqlite3Insert( assert( pSelect==0 ); /* Otherwise useTempTable is true */ sqlite3ExprCodeAndCache(pParse, pList->a[j].pExpr, regCols+i+1); } + if( pColumn==0 && !IsOrdinaryHiddenColumn(&pTab->aCol[i]) ) j++; } /* If this is an INSERT on a view with an INSTEAD OF INSERT trigger, @@ -93765,8 +109193,7 @@ SQLITE_PRIVATE void sqlite3Insert( ** table column affinities. */ if( !isView ){ - sqlite3VdbeAddOp2(v, OP_Affinity, regCols+1, pTab->nCol); - sqlite3TableAffinityStr(v, pTab); + sqlite3TableAffinity(v, pTab, regCols+1); } /* Fire BEFORE or INSTEAD OF triggers */ @@ -93788,7 +109215,7 @@ SQLITE_PRIVATE void sqlite3Insert( if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regRowid); }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+ipkColumn, regRowid); + sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid); }else{ VdbeOp *pOp; sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regRowid); @@ -93805,16 +109232,16 @@ SQLITE_PRIVATE void sqlite3Insert( ** to generate a unique primary key value. */ if( !appendFlag ){ - int j1; + int addr1; if( !IsVirtual(pTab) ){ - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regRowid); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regRowid); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_NewRowid, iDataCur, regRowid, regAutoinc); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); }else{ - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_IsNull, regRowid, j1+2); + addr1 = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp2(v, OP_IsNull, regRowid, addr1+2); VdbeCoverage(v); } - sqlite3VdbeAddOp1(v, OP_MustBeInt, regRowid); + sqlite3VdbeAddOp1(v, OP_MustBeInt, regRowid); VdbeCoverage(v); } }else if( IsVirtual(pTab) || withoutRowid ){ sqlite3VdbeAddOp2(v, OP_Null, 0, regRowid); @@ -93834,13 +109261,13 @@ SQLITE_PRIVATE void sqlite3Insert( /* The value of the INTEGER PRIMARY KEY column is always a NULL. ** Whenever this column is read, the rowid will be substituted ** in its place. Hence, fill this column with a NULL to avoid - ** taking up data space with information that will never be used. */ - sqlite3VdbeAddOp2(v, OP_Null, 0, iRegStore); + ** taking up data space with information that will never be used. + ** As there may be shallow copies of this value, make it a soft-NULL */ + sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore); continue; } if( pColumn==0 ){ if( IsHiddenColumn(&pTab->aCol[i]) ){ - assert( IsVirtual(pTab) ); j = -1; nHidden++; }else{ @@ -93852,11 +109279,13 @@ SQLITE_PRIVATE void sqlite3Insert( } } if( j<0 || nColumn==0 || (pColumn && j>=pColumn->nId) ){ - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, iRegStore); + sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore); }else if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, iRegStore); }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+j, iRegStore); + if( regFromSelect!=regData ){ + sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+j, iRegStore); + } }else{ sqlite3ExprCode(pParse, pList->a[j].pExpr, iRegStore); } @@ -93876,12 +109305,26 @@ SQLITE_PRIVATE void sqlite3Insert( #endif { int isReplace; /* Set to true if constraints may cause a replace */ + int bUseSeek; /* True to use OPFLAG_SEEKRESULT */ sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur, - regIns, 0, ipkColumn>=0, onError, endOfLoop, &isReplace + regIns, 0, ipkColumn>=0, onError, endOfLoop, &isReplace, 0 ); sqlite3FkCheck(pParse, pTab, 0, regIns, 0, 0); + + /* Set the OPFLAG_USESEEKRESULT flag if either (a) there are no REPLACE + ** constraints or (b) there are no triggers and this table is not a + ** parent table in a foreign key constraint. It is safe to set the + ** flag in the second case as if any REPLACE constraint is hit, an + ** OP_Delete or OP_IdxDelete instruction will be executed on each + ** cursor that is disturbed. And these instructions both clear the + ** VdbeCursor.seekResult variable, disabling the OPFLAG_USESEEKRESULT + ** functionality. */ + bUseSeek = (isReplace==0 || (pTrigger==0 && + ((db->flags & SQLITE_ForeignKeys)==0 || sqlite3FkReferences(pTab)==0) + )); sqlite3CompleteInsertion(pParse, pTab, iDataCur, iIdxCur, - regIns, aRegIdx, 0, appendFlag, isReplace==0); + regIns, aRegIdx, 0, appendFlag, bUseSeek + ); } } @@ -93902,22 +109345,14 @@ SQLITE_PRIVATE void sqlite3Insert( */ sqlite3VdbeResolveLabel(v, endOfLoop); if( useTempTable ){ - sqlite3VdbeAddOp2(v, OP_Next, srcTab, addrCont); + sqlite3VdbeAddOp2(v, OP_Next, srcTab, addrCont); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addrInsTop); sqlite3VdbeAddOp1(v, OP_Close, srcTab); }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrCont); + sqlite3VdbeGoto(v, addrCont); sqlite3VdbeJumpHere(v, addrInsTop); } - if( !IsVirtual(pTab) && !isView ){ - /* Close all tables opened */ - if( iDataCurpIndex; pIdx; pIdx=pIdx->pNext, idx++){ - sqlite3VdbeAddOp1(v, OP_Close, idx+iIdxCur); - } - } - insert_end: /* Update the sqlite_sequence table by storing the content of the ** maximum rowid counter values recorded while inserting into @@ -93947,7 +109382,7 @@ insert_cleanup: } /* Make sure "isView" and other macros defined above are undefined. Otherwise -** thely may interfere with compilation of other functions in this file +** they may interfere with compilation of other functions in this file ** (or in another file, if this file becomes part of the amalgamation). */ #ifdef isView #undef isView @@ -93959,6 +109394,59 @@ insert_cleanup: #undef tmask #endif +/* +** Meanings of bits in of pWalker->eCode for checkConstraintUnchanged() +*/ +#define CKCNSTRNT_COLUMN 0x01 /* CHECK constraint uses a changing column */ +#define CKCNSTRNT_ROWID 0x02 /* CHECK constraint references the ROWID */ + +/* This is the Walker callback from checkConstraintUnchanged(). Set +** bit 0x01 of pWalker->eCode if +** pWalker->eCode to 0 if this expression node references any of the +** columns that are being modifed by an UPDATE statement. +*/ +static int checkConstraintExprNode(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_COLUMN ){ + assert( pExpr->iColumn>=0 || pExpr->iColumn==-1 ); + if( pExpr->iColumn>=0 ){ + if( pWalker->u.aiCol[pExpr->iColumn]>=0 ){ + pWalker->eCode |= CKCNSTRNT_COLUMN; + } + }else{ + pWalker->eCode |= CKCNSTRNT_ROWID; + } + } + return WRC_Continue; +} + +/* +** pExpr is a CHECK constraint on a row that is being UPDATE-ed. The +** only columns that are modified by the UPDATE are those for which +** aiChng[i]>=0, and also the ROWID is modified if chngRowid is true. +** +** Return true if CHECK constraint pExpr does not use any of the +** changing columns (or the rowid if it is changing). In other words, +** return true if this CHECK constraint can be skipped when validating +** the new row in the UPDATE statement. +*/ +static int checkConstraintUnchanged(Expr *pExpr, int *aiChng, int chngRowid){ + Walker w; + memset(&w, 0, sizeof(w)); + w.eCode = 0; + w.xExprCallback = checkConstraintExprNode; + w.u.aiCol = aiChng; + sqlite3WalkExpr(&w, pExpr); + if( !chngRowid ){ + testcase( (w.eCode & CKCNSTRNT_ROWID)!=0 ); + w.eCode &= ~CKCNSTRNT_ROWID; + } + testcase( w.eCode==0 ); + testcase( w.eCode==CKCNSTRNT_COLUMN ); + testcase( w.eCode==CKCNSTRNT_ROWID ); + testcase( w.eCode==(CKCNSTRNT_ROWID|CKCNSTRNT_COLUMN) ); + return !w.eCode; +} + /* ** Generate code to do constraint checks prior to an INSERT or an UPDATE ** on table pTab. @@ -94053,7 +109541,8 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( u8 pkChng, /* Non-zero if the rowid or PRIMARY KEY changed */ u8 overrideError, /* Override onError to this if not OE_Default */ int ignoreDest, /* Jump to this label on an OE_Ignore resolution */ - int *pbMayReplace /* OUT: Set to true if constraint may cause a replace */ + int *pbMayReplace, /* OUT: Set to true if constraint may cause a replace */ + int *aiChng /* column i is unchanged if aiChng[i]<0 */ ){ Vdbe *v; /* VDBE under constrution */ Index *pIdx; /* Pointer to one of the indices */ @@ -94063,13 +109552,13 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( int ix; /* Index loop counter */ int nCol; /* Number of columns */ int onError; /* Conflict resolution strategy */ - int j1; /* Addresss of jump instruction */ + int addr1; /* Address of jump instruction */ int seenReplace = 0; /* True if REPLACE is used to resolve INT PK conflict */ int nPkField; /* Number of fields in PRIMARY KEY. 1 for ROWID tables */ int ipkTop = 0; /* Top of the rowid change constraint check */ int ipkBottom = 0; /* Bottom of the rowid change constraint check */ u8 isUpdate; /* True if this is an UPDATE operation */ - int regRowid = -1; /* Register holding ROWID value */ + u8 bAffinityDone = 0; /* True if the OP_Affinity operation has been run */ isUpdate = regOldData!=0; db = pParse->db; @@ -94098,10 +109587,14 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( */ for(i=0; iiPKey ){ + continue; /* ROWID is never NULL */ + } + if( aiChng && aiChng[i]<0 ){ + /* Don't bother checking for NOT NULL on columns that do not change */ continue; } onError = pTab->aCol[i].notNull; - if( onError==OE_None ) continue; + if( onError==OE_None ) continue; /* This column is allowed to be NULL */ if( overrideError!=OE_Default ){ onError = overrideError; }else if( onError==OE_Default ){ @@ -94120,20 +109613,24 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( case OE_Fail: { char *zMsg = sqlite3MPrintf(db, "%s.%s", pTab->zName, pTab->aCol[i].zName); - sqlite3VdbeAddOp4(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL, onError, - regNewData+1+i, zMsg, P4_DYNAMIC); + sqlite3VdbeAddOp3(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL, onError, + regNewData+1+i); + sqlite3VdbeAppendP4(v, zMsg, P4_DYNAMIC); sqlite3VdbeChangeP5(v, P5_ConstraintNotNull); + VdbeCoverage(v); break; } case OE_Ignore: { sqlite3VdbeAddOp2(v, OP_IsNull, regNewData+1+i, ignoreDest); + VdbeCoverage(v); break; } default: { assert( onError==OE_Replace ); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regNewData+1+i); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regNewData+1+i); + VdbeCoverage(v); sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regNewData+1+i); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); break; } } @@ -94147,10 +109644,13 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( pParse->ckBase = regNewData+1; onError = overrideError!=OE_Default ? overrideError : OE_Abort; for(i=0; inExpr; i++){ - int allOk = sqlite3VdbeMakeLabel(v); - sqlite3ExprIfTrue(pParse, pCheck->a[i].pExpr, allOk, SQLITE_JUMPIFNULL); + int allOk; + Expr *pExpr = pCheck->a[i].pExpr; + if( aiChng && checkConstraintUnchanged(pExpr, aiChng, pkChng) ) continue; + allOk = sqlite3VdbeMakeLabel(v); + sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL); if( onError==OE_Ignore ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); }else{ char *zName = pCheck->a[i].zName; if( zName==0 ) zName = pTab->zName; @@ -94179,10 +109679,12 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( } if( isUpdate ){ - /* pkChng!=0 does not mean that the rowid has change, only that + /* pkChng!=0 does not mean that the rowid has changed, only that ** it might have changed. Skip the conflict logic below if the rowid ** is unchanged. */ sqlite3VdbeAddOp3(v, OP_Eq, regNewData, addrRowidOk, regOldData); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); + VdbeCoverage(v); } /* If the response to a rowid conflict is REPLACE but the response @@ -94202,6 +109704,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( /* Check to see if the new rowid already exists in the table. Skip ** the following conflict logic if it does not. */ sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, addrRowidOk, regNewData); + VdbeCoverage(v); /* Generate code that deals with a rowid collision */ switch( onError ){ @@ -94245,17 +109748,29 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){ sqlite3MultiWrite(pParse); sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - regNewData, 1, 0, OE_Replace, 1); - }else if( pTab->pIndex ){ - sqlite3MultiWrite(pParse); - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, 0); + regNewData, 1, 0, OE_Replace, 1, -1); + }else{ +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + if( HasRowid(pTab) ){ + /* This OP_Delete opcode fires the pre-update-hook only. It does + ** not modify the b-tree. It is more efficient to let the coming + ** OP_Insert replace the existing entry than it is to delete the + ** existing entry and then insert a new one. */ + sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, OPFLAG_ISNOOP); + sqlite3VdbeAppendP4(v, pTab, P4_TABLE); + } +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + if( pTab->pIndex ){ + sqlite3MultiWrite(pParse); + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,-1); + } } seenReplace = 1; break; } case OE_Ignore: { /*assert( seenReplace==0 );*/ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); break; } } @@ -94280,6 +109795,10 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( int addrUniqueOk; /* Jump here if the UNIQUE constraint is satisfied */ if( aRegIdx[ix]==0 ) continue; /* Skip indices that do not change */ + if( bAffinityDone==0 ){ + sqlite3TableAffinity(v, pTab, regNewData+1); + bAffinityDone = 1; + } iThisCur = iIdxCur+ix; addrUniqueOk = sqlite3VdbeMakeLabel(v); @@ -94287,32 +109806,35 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( if( pIdx->pPartIdxWhere ){ sqlite3VdbeAddOp2(v, OP_Null, 0, aRegIdx[ix]); pParse->ckBase = regNewData+1; - sqlite3ExprIfFalse(pParse, pIdx->pPartIdxWhere, addrUniqueOk, - SQLITE_JUMPIFNULL); + sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, addrUniqueOk, + SQLITE_JUMPIFNULL); pParse->ckBase = 0; } /* Create a record for this index entry as it should appear after ** the insert or update. Store that record in the aRegIdx[ix] register */ - regIdx = sqlite3GetTempRange(pParse, pIdx->nColumn); + regIdx = aRegIdx[ix]+1; for(i=0; inColumn; i++){ int iField = pIdx->aiColumn[i]; int x; - if( iField<0 || iField==pTab->iPKey ){ - if( regRowid==regIdx+i ) continue; /* ROWID already in regIdx+i */ - x = regNewData; - regRowid = pIdx->pPartIdxWhere ? -1 : regIdx+i; + if( iField==XN_EXPR ){ + pParse->ckBase = regNewData+1; + sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[i].pExpr, regIdx+i); + pParse->ckBase = 0; + VdbeComment((v, "%s column %d", pIdx->zName, i)); }else{ - x = iField + regNewData + 1; + if( iField==XN_ROWID || iField==pTab->iPKey ){ + x = regNewData; + }else{ + x = iField + regNewData + 1; + } + sqlite3VdbeAddOp2(v, iField<0 ? OP_IntCopy : OP_SCopy, x, regIdx+i); + VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName)); } - sqlite3VdbeAddOp2(v, OP_SCopy, x, regIdx+i); - VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName)); } sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn, aRegIdx[ix]); - sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), P4_TRANSIENT); VdbeComment((v, "for %s", pIdx->zName)); - sqlite3ExprCacheAffinityChange(pParse, regIdx, pIdx->nColumn); /* In an UPDATE operation, if this index is the PRIMARY KEY index ** of a WITHOUT ROWID table and there has been no change the @@ -94326,7 +109848,6 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( /* Find out what action to take in case there is a uniqueness conflict */ onError = pIdx->onError; if( onError==OE_None ){ - sqlite3ReleaseTempRange(pParse, regIdx, pIdx->nColumn); sqlite3VdbeResolveLabel(v, addrUniqueOk); continue; /* pIdx is not a UNIQUE index */ } @@ -94335,10 +109856,29 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( }else if( onError==OE_Default ){ onError = OE_Abort; } - + + /* Collision detection may be omitted if all of the following are true: + ** (1) The conflict resolution algorithm is REPLACE + ** (2) The table is a WITHOUT ROWID table + ** (3) There are no secondary indexes on the table + ** (4) No delete triggers need to be fired if there is a conflict + ** (5) No FK constraint counters need to be updated if a conflict occurs. + */ + if( (ix==0 && pIdx->pNext==0) /* Condition 3 */ + && pPk==pIdx /* Condition 2 */ + && onError==OE_Replace /* Condition 1 */ + && ( 0==(db->flags&SQLITE_RecTriggers) || /* Condition 4 */ + 0==sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0)) + && ( 0==(db->flags&SQLITE_ForeignKeys) || /* Condition 5 */ + (0==pTab->pFKey && 0==sqlite3FkReferences(pTab))) + ){ + sqlite3VdbeResolveLabel(v, addrUniqueOk); + continue; + } + /* Check to see if the new index entry will be unique */ sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk, - regIdx, pIdx->nKeyCol); + regIdx, pIdx->nKeyCol); VdbeCoverage(v); /* Generate code to handle collisions */ regR = (pIdx==pPk) ? regIdx : sqlite3GetTempRange(pParse, nPkField); @@ -94349,6 +109889,8 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** is different from old-rowid */ if( isUpdate ){ sqlite3VdbeAddOp3(v, OP_Eq, regR, addrUniqueOk, regOldData); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); + VdbeCoverage(v); } }else{ int x; @@ -94356,6 +109898,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** store it in registers regR..regR+nPk-1 */ if( pIdx!=pPk ){ for(i=0; inKeyCol; i++){ + assert( pPk->aiColumn[i]>=0 ); x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]); sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i); VdbeComment((v, "%s.%s", pTab->zName, @@ -94372,11 +109915,12 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( ** KEY values of this row before the update. */ int addrJump = sqlite3VdbeCurrentAddr(v)+pPk->nKeyCol; int op = OP_Ne; - int regCmp = (pIdx->autoIndex==2 ? regIdx : regR); + int regCmp = (IsPrimaryKeyIndex(pIdx) ? regIdx : regR); for(i=0; inKeyCol; i++){ char *p4 = (char*)sqlite3LocateCollSeq(pParse, pPk->azColl[i]); x = pPk->aiColumn[i]; + assert( x>=0 ); if( i==(pPk->nKeyCol-1) ){ addrJump = addrUniqueOk; op = OP_Eq; @@ -94384,6 +109928,9 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( sqlite3VdbeAddOp4(v, op, regOldData+1+x, addrJump, regCmp+i, p4, P4_COLLSEQ ); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); + VdbeCoverageIf(v, op==OP_Eq); + VdbeCoverageIf(v, op==OP_Ne); } } } @@ -94400,7 +109947,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( break; } case OE_Ignore: { - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); break; } default: { @@ -94411,17 +109958,17 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); } sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - regR, nPkField, 0, OE_Replace, pIdx==pPk); + regR, nPkField, 0, OE_Replace, + (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur); seenReplace = 1; break; } } sqlite3VdbeResolveLabel(v, addrUniqueOk); - sqlite3ReleaseTempRange(pParse, regIdx, pIdx->nColumn); if( regR!=regIdx ) sqlite3ReleaseTempRange(pParse, regR, nPkField); } if( ipkTop ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ipkTop+1); + sqlite3VdbeGoto(v, ipkTop+1); sqlite3VdbeJumpHere(v, ipkBottom); } @@ -94429,6 +109976,25 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks( VdbeModuleComment((v, "END: GenCnstCks(%d)", seenReplace)); } +#ifdef SQLITE_ENABLE_NULL_TRIM +/* +** Change the P5 operand on the last opcode (which should be an OP_MakeRecord) +** to be the number of columns in table pTab that must not be NULL-trimmed. +** +** Or if no columns of pTab may be NULL-trimmed, leave P5 at zero. +*/ +SQLITE_PRIVATE void sqlite3SetMakeRecordP5(Vdbe *v, Table *pTab){ + u16 i; + + /* Records with omitted columns are only allowed for schema format + ** version 2 and later (SQLite version 3.1.4, 2005-02-20). */ + if( pTab->pSchema->file_format<2 ) return; + + for(i=pTab->nCol; i>1 && pTab->aCol[i-1].pDflt==0; i--){} + sqlite3VdbeChangeP5(v, i); +} +#endif + /* ** This routine generates code to finish the INSERT or UPDATE operation ** that was started by a prior call to sqlite3GenerateConstraintChecks. @@ -94445,7 +110011,7 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( int iIdxCur, /* First index cursor */ int regNewData, /* Range of content */ int *aRegIdx, /* Register used by each index. 0 for unused indices */ - int isUpdate, /* True for UPDATE, False for INSERT */ + int update_flags, /* True for UPDATE, False for INSERT */ int appendBias, /* True if this is likely to be an append */ int useSeekResult /* True to set the USESEEKRESULT flag on OP_[Idx]Insert */ ){ @@ -94453,37 +110019,58 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( Index *pIdx; /* An index being inserted or updated */ u8 pik_flags; /* flag values passed to the btree insert */ int regData; /* Content registers (after the rowid) */ - int regRec; /* Register holding assemblied record for the table */ + int regRec; /* Register holding assembled record for the table */ int i; /* Loop counter */ + u8 bAffinityDone = 0; /* True if OP_Affinity has been run already */ + + assert( update_flags==0 + || update_flags==OPFLAG_ISUPDATE + || update_flags==(OPFLAG_ISUPDATE|OPFLAG_SAVEPOSITION) + ); v = sqlite3GetVdbe(pParse); assert( v!=0 ); assert( pTab->pSelect==0 ); /* This table is not a VIEW */ for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ if( aRegIdx[i]==0 ) continue; + bAffinityDone = 1; if( pIdx->pPartIdxWhere ){ sqlite3VdbeAddOp2(v, OP_IsNull, aRegIdx[i], sqlite3VdbeCurrentAddr(v)+2); + VdbeCoverage(v); } - sqlite3VdbeAddOp2(v, OP_IdxInsert, iIdxCur+i, aRegIdx[i]); - pik_flags = 0; - if( useSeekResult ) pik_flags = OPFLAG_USESEEKRESULT; - if( pIdx->autoIndex==2 && !HasRowid(pTab) ){ + pik_flags = (useSeekResult ? OPFLAG_USESEEKRESULT : 0); + if( IsPrimaryKeyIndex(pIdx) && !HasRowid(pTab) ){ assert( pParse->nested==0 ); pik_flags |= OPFLAG_NCHANGE; + pik_flags |= (update_flags & OPFLAG_SAVEPOSITION); +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + if( update_flags==0 ){ + sqlite3VdbeAddOp4(v, OP_InsertInt, + iIdxCur+i, aRegIdx[i], 0, (char*)pTab, P4_TABLE + ); + sqlite3VdbeChangeP5(v, OPFLAG_ISNOOP); + } +#endif } - if( pik_flags ) sqlite3VdbeChangeP5(v, pik_flags); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iIdxCur+i, aRegIdx[i], + aRegIdx[i]+1, + pIdx->uniqNotNull ? pIdx->nKeyCol: pIdx->nColumn); + sqlite3VdbeChangeP5(v, pik_flags); } if( !HasRowid(pTab) ) return; regData = regNewData + 1; regRec = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp3(v, OP_MakeRecord, regData, pTab->nCol, regRec); - sqlite3TableAffinityStr(v, pTab); - sqlite3ExprCacheAffinityChange(pParse, regData, pTab->nCol); + sqlite3SetMakeRecordP5(v, pTab); + if( !bAffinityDone ){ + sqlite3TableAffinity(v, pTab, 0); + sqlite3ExprCacheAffinityChange(pParse, regData, pTab->nCol); + } if( pParse->nested ){ pik_flags = 0; }else{ pik_flags = OPFLAG_NCHANGE; - pik_flags |= (isUpdate?OPFLAG_ISUPDATE:OPFLAG_LASTROWID); + pik_flags |= (update_flags?update_flags:OPFLAG_LASTROWID); } if( appendBias ){ pik_flags |= OPFLAG_APPEND; @@ -94493,7 +110080,7 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( } sqlite3VdbeAddOp3(v, OP_Insert, iDataCur, regRec, regNewData); if( !pParse->nested ){ - sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT); + sqlite3VdbeAppendP4(v, pTab, P4_TABLE); } sqlite3VdbeChangeP5(v, pik_flags); } @@ -94515,11 +110102,15 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion( ** For a WITHOUT ROWID table, *piDataCur will be somewhere in the range ** of *piIdxCurs, depending on where the PRIMARY KEY index appears on the ** pTab->pIndex list. +** +** If pTab is a virtual table, then this routine is a no-op and the +** *piDataCur and *piIdxCur values are left uninitialized. */ SQLITE_PRIVATE int sqlite3OpenTableAndIndices( Parse *pParse, /* Parsing context */ Table *pTab, /* Table to be opened */ int op, /* OP_OpenRead or OP_OpenWrite */ + u8 p5, /* P5 value for OP_Open* opcodes (except on WITHOUT ROWID) */ int iBase, /* Use this for the table cursor, if there is one */ u8 *aToOpen, /* If not NULL: boolean for each table and index */ int *piDataCur, /* Write the database source cursor number here */ @@ -94532,10 +110123,11 @@ SQLITE_PRIVATE int sqlite3OpenTableAndIndices( Vdbe *v; assert( op==OP_OpenRead || op==OP_OpenWrite ); + assert( op==OP_OpenWrite || p5==0 ); if( IsVirtual(pTab) ){ - assert( aToOpen==0 ); - *piDataCur = 0; - *piIdxCur = 1; + /* This routine is a no-op for virtual tables. Leave the output + ** variables *piDataCur and *piIdxCur uninitialized so that valgrind + ** can detect if they are used by mistake in the caller. */ return 0; } iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); @@ -94553,12 +110145,14 @@ SQLITE_PRIVATE int sqlite3OpenTableAndIndices( for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ int iIdxCur = iBase++; assert( pIdx->pSchema==pTab->pSchema ); - if( pIdx->autoIndex==2 && !HasRowid(pTab) && piDataCur ){ - *piDataCur = iIdxCur; + if( IsPrimaryKeyIndex(pIdx) && !HasRowid(pTab) ){ + if( piDataCur ) *piDataCur = iIdxCur; + p5 = 0; } if( aToOpen==0 || aToOpen[i+1] ){ sqlite3VdbeAddOp3(v, op, iIdxCur, pIdx->tnum, iDb); sqlite3VdbeSetP4KeyInfo(pParse, pIdx); + sqlite3VdbeChangeP5(v, p5); VdbeComment((v, "%s", pIdx->zName)); } } @@ -94572,27 +110166,13 @@ SQLITE_PRIVATE int sqlite3OpenTableAndIndices( ** The following global variable is incremented whenever the ** transfer optimization is used. This is used for testing ** purposes only - to make sure the transfer optimization really -** is happening when it is suppose to. +** is happening when it is supposed to. */ SQLITE_API int sqlite3_xferopt_count; #endif /* SQLITE_TEST */ #ifndef SQLITE_OMIT_XFER_OPT -/* -** Check to collation names to see if they are compatible. -*/ -static int xferCompatibleCollation(const char *z1, const char *z2){ - if( z1==0 ){ - return z2==0; - } - if( z2==0 ){ - return 0; - } - return sqlite3StrICmp(z1, z2)==0; -} - - /* ** Check to see if index pSrc is compatible as a source of data ** for index pDest in an insert transfer optimization. The rules @@ -94618,10 +110198,17 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){ if( pSrc->aiColumn[i]!=pDest->aiColumn[i] ){ return 0; /* Different columns indexed */ } + if( pSrc->aiColumn[i]==XN_EXPR ){ + assert( pSrc->aColExpr!=0 && pDest->aColExpr!=0 ); + if( sqlite3ExprCompare(pSrc->aColExpr->a[i].pExpr, + pDest->aColExpr->a[i].pExpr, -1)!=0 ){ + return 0; /* Different expressions in the index */ + } + } if( pSrc->aSortOrder[i]!=pDest->aSortOrder[i] ){ return 0; /* Different sort orders */ } - if( !xferCompatibleCollation(pSrc->azColl[i],pDest->azColl[i]) ){ + if( sqlite3_stricmp(pSrc->azColl[i],pDest->azColl[i])!=0 ){ return 0; /* Different collating sequences */ } } @@ -94639,7 +110226,7 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){ ** INSERT INTO tab1 SELECT * FROM tab2; ** ** The xfer optimization transfers raw records from tab2 over to tab1. -** Columns are not decoded and reassemblied, which greatly improves +** Columns are not decoded and reassembled, which greatly improves ** performance. Raw index records are transferred in the same way. ** ** The xfer optimization is only attempted if tab1 and tab2 are compatible. @@ -94665,6 +110252,7 @@ static int xferOptimization( int onError, /* How to handle constraint errors */ int iDbDest /* The database of pDest */ ){ + sqlite3 *db = pParse->db; ExprList *pEList; /* The result set of the SELECT */ Table *pSrc; /* The table in the FROM clause of SELECT */ Index *pSrcIdx, *pDestIdx; /* Source and destination indices */ @@ -94735,7 +110323,7 @@ static int xferOptimization( return 0; /* The result set must have exactly one column */ } assert( pEList->a[0].pExpr ); - if( pEList->a[0].pExpr->op!=TK_ALL ){ + if( pEList->a[0].pExpr->op!=TK_ASTERISK ){ return 0; /* The result set must be the special operator "*" */ } @@ -94769,18 +110357,38 @@ static int xferOptimization( return 0; /* Both tables must have the same INTEGER PRIMARY KEY */ } for(i=0; inCol; i++){ - if( pDest->aCol[i].affinity!=pSrc->aCol[i].affinity ){ + Column *pDestCol = &pDest->aCol[i]; + Column *pSrcCol = &pSrc->aCol[i]; +#ifdef SQLITE_ENABLE_HIDDEN_COLUMNS + if( (db->flags & SQLITE_Vacuum)==0 + && (pDestCol->colFlags | pSrcCol->colFlags) & COLFLAG_HIDDEN + ){ + return 0; /* Neither table may have __hidden__ columns */ + } +#endif + if( pDestCol->affinity!=pSrcCol->affinity ){ return 0; /* Affinity must be the same on all columns */ } - if( !xferCompatibleCollation(pDest->aCol[i].zColl, pSrc->aCol[i].zColl) ){ + if( sqlite3_stricmp(pDestCol->zColl, pSrcCol->zColl)!=0 ){ return 0; /* Collating sequence must be the same on all columns */ } - if( pDest->aCol[i].notNull && !pSrc->aCol[i].notNull ){ + if( pDestCol->notNull && !pSrcCol->notNull ){ return 0; /* tab2 must be NOT NULL if tab1 is */ } + /* Default values for second and subsequent columns need to match. */ + if( i>0 ){ + assert( pDestCol->pDflt==0 || pDestCol->pDflt->op==TK_SPAN ); + assert( pSrcCol->pDflt==0 || pSrcCol->pDflt->op==TK_SPAN ); + if( (pDestCol->pDflt==0)!=(pSrcCol->pDflt==0) + || (pDestCol->pDflt && strcmp(pDestCol->pDflt->u.zToken, + pSrcCol->pDflt->u.zToken)!=0) + ){ + return 0; /* Default values must be the same for all columns */ + } + } } for(pDestIdx=pDest->pIndex; pDestIdx; pDestIdx=pDestIdx->pNext){ - if( pDestIdx->onError!=OE_None ){ + if( IsUniqueIndex(pDestIdx) ){ destHasUniqueIdx = 1; } for(pSrcIdx=pSrc->pIndex; pSrcIdx; pSrcIdx=pSrcIdx->pNext){ @@ -94803,11 +110411,11 @@ static int xferOptimization( ** the extra complication to make this rule less restrictive is probably ** not worth the effort. Ticket [6284df89debdfa61db8073e062908af0c9b6118e] */ - if( (pParse->db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){ + if( (db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){ return 0; } #endif - if( (pParse->db->flags & SQLITE_CountRows)!=0 ){ + if( (db->flags & SQLITE_CountRows)!=0 ){ return 0; /* xfer opt does not play well with PRAGMA count_changes */ } @@ -94818,7 +110426,7 @@ static int xferOptimization( #ifdef SQLITE_TEST sqlite3_xferopt_count++; #endif - iDbSrc = sqlite3SchemaToIndex(pParse->db, pSrc->pSchema); + iDbSrc = sqlite3SchemaToIndex(db, pSrc->pSchema); v = sqlite3GetVdbe(pParse); sqlite3CodeVerifySchema(pParse, iDbSrc); iSrc = pParse->nTab++; @@ -94828,14 +110436,18 @@ static int xferOptimization( regRowid = sqlite3GetTempReg(pParse); sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite); assert( HasRowid(pDest) || destHasUniqueIdx ); - if( (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */ + if( (db->flags & SQLITE_Vacuum)==0 && ( + (pDest->iPKey<0 && pDest->pIndex!=0) /* (1) */ || destHasUniqueIdx /* (2) */ || (onError!=OE_Abort && onError!=OE_Rollback) /* (3) */ - ){ + )){ /* In some circumstances, we are able to run the xfer optimization - ** only if the destination table is initially empty. This code makes - ** that determination. Conditions under which the destination must - ** be empty: + ** only if the destination table is initially empty. Unless the + ** SQLITE_Vacuum flag is set, this block generates code to make + ** that determination. If SQLITE_Vacuum is set, then the destination + ** table is always empty. + ** + ** Conditions under which the destination must be empty: ** ** (1) There is no INTEGER PRIMARY KEY but there are indices. ** (If the destination is not initially empty, the rowid fields @@ -94846,16 +110458,18 @@ static int xferOptimization( ** ** (3) onError is something other than OE_Abort and OE_Rollback. */ - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0); - emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0); + addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0); VdbeCoverage(v); + emptyDestTest = sqlite3VdbeAddOp0(v, OP_Goto); sqlite3VdbeJumpHere(v, addr1); } if( HasRowid(pSrc) ){ + u8 insFlags; sqlite3OpenTable(pParse, iSrc, iDbSrc, pSrc, OP_OpenRead); - emptySrcTest = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); + emptySrcTest = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v); if( pDest->iPKey>=0 ){ addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); addr2 = sqlite3VdbeAddOp3(v, OP_NotExists, iDest, 0, regRowid); + VdbeCoverage(v); sqlite3RowidConstraint(pParse, onError, pDest); sqlite3VdbeJumpHere(v, addr2); autoIncStep(pParse, regAutoinc, regRowid); @@ -94865,11 +110479,18 @@ static int xferOptimization( addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); assert( (pDest->tabFlags & TF_Autoincrement)==0 ); } - sqlite3VdbeAddOp2(v, OP_RowData, iSrc, regData); - sqlite3VdbeAddOp3(v, OP_Insert, iDest, regData, regRowid); - sqlite3VdbeChangeP5(v, OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND); - sqlite3VdbeChangeP4(v, -1, pDest->zName, 0); - sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1); + sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); + if( db->flags & SQLITE_Vacuum ){ + sqlite3VdbeAddOp3(v, OP_Last, iDest, 0, -1); + insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID| + OPFLAG_APPEND|OPFLAG_USESEEKRESULT; + }else{ + insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND; + } + sqlite3VdbeAddOp4(v, OP_Insert, iDest, regData, regRowid, + (char*)pDest, P4_TABLE); + sqlite3VdbeChangeP5(v, insFlags); + sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Close, iSrc, 0); sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); }else{ @@ -94877,6 +110498,7 @@ static int xferOptimization( sqlite3TableLock(pParse, iDbSrc, pSrc->tnum, 0, pSrc->zName); } for(pDestIdx=pDest->pIndex; pDestIdx; pDestIdx=pDestIdx->pNext){ + u8 idxInsFlags = 0; for(pSrcIdx=pSrc->pIndex; ALWAYS(pSrcIdx); pSrcIdx=pSrcIdx->pNext){ if( xferCompatibleIndex(pDestIdx, pSrcIdx) ) break; } @@ -94888,18 +110510,49 @@ static int xferOptimization( sqlite3VdbeSetP4KeyInfo(pParse, pDestIdx); sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR); VdbeComment((v, "%s", pDestIdx->zName)); - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); - sqlite3VdbeAddOp2(v, OP_RowKey, iSrc, regData); - sqlite3VdbeAddOp3(v, OP_IdxInsert, iDest, regData, 1); - sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); + addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1); + if( db->flags & SQLITE_Vacuum ){ + /* This INSERT command is part of a VACUUM operation, which guarantees + ** that the destination table is empty. If all indexed columns use + ** collation sequence BINARY, then it can also be assumed that the + ** index will be populated by inserting keys in strictly sorted + ** order. In this case, instead of seeking within the b-tree as part + ** of every OP_IdxInsert opcode, an OP_Last is added before the + ** OP_IdxInsert to seek to the point within the b-tree where each key + ** should be inserted. This is faster. + ** + ** If any of the indexed columns use a collation sequence other than + ** BINARY, this optimization is disabled. This is because the user + ** might change the definition of a collation sequence and then run + ** a VACUUM command. In that case keys may not be written in strictly + ** sorted order. */ + for(i=0; inColumn; i++){ + const char *zColl = pSrcIdx->azColl[i]; + assert( sqlite3_stricmp(sqlite3StrBINARY, zColl)!=0 + || sqlite3StrBINARY==zColl ); + if( sqlite3_stricmp(sqlite3StrBINARY, zColl) ) break; + } + if( i==pSrcIdx->nColumn ){ + idxInsFlags = OPFLAG_USESEEKRESULT; + sqlite3VdbeAddOp3(v, OP_Last, iDest, 0, -1); + } + } + if( !HasRowid(pSrc) && pDestIdx->idxType==2 ){ + idxInsFlags |= OPFLAG_NCHANGE; + } + sqlite3VdbeAddOp2(v, OP_IdxInsert, iDest, regData); + sqlite3VdbeChangeP5(v, idxInsFlags|OPFLAG_APPEND); + sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp2(v, OP_Close, iSrc, 0); sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); } - sqlite3VdbeJumpHere(v, emptySrcTest); + if( emptySrcTest ) sqlite3VdbeJumpHere(v, emptySrcTest); sqlite3ReleaseTempReg(pParse, regRowid); sqlite3ReleaseTempReg(pParse, regData); if( emptyDestTest ){ + sqlite3AutoincrementEnd(pParse); sqlite3VdbeAddOp2(v, OP_Halt, SQLITE_OK, 0); sqlite3VdbeJumpHere(v, emptyDestTest); sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); @@ -94929,6 +110582,7 @@ static int xferOptimization( ** accessed by users of the library. */ +/* #include "sqliteInt.h" */ /* ** Execute SQL code. Return one of the SQLITE_ success/failure @@ -94957,7 +110611,7 @@ SQLITE_API int sqlite3_exec( if( zSql==0 ) zSql = ""; sqlite3_mutex_enter(db->mutex); - sqlite3Error(db, SQLITE_OK, 0); + sqlite3Error(db, SQLITE_OK); while( rc==SQLITE_OK && zSql[0] ){ int nCol; char **azVals = 0; @@ -95003,16 +110657,19 @@ SQLITE_API int sqlite3_exec( for(i=0; imallocFailed = 1; + sqlite3OomFault(db); goto exec_out; } } } if( xCallback(pArg, nCol, azVals, azCols) ){ + /* EVIDENCE-OF: R-38229-40159 If the callback function to + ** sqlite3_exec() returns non-zero, then sqlite3_exec() will + ** return SQLITE_ABORT. */ rc = SQLITE_ABORT; sqlite3VdbeFinalize((Vdbe *)pStmt); pStmt = 0; - sqlite3Error(db, SQLITE_ABORT, 0); + sqlite3Error(db, SQLITE_ABORT); goto exec_out; } } @@ -95035,14 +110692,14 @@ exec_out: sqlite3DbFree(db, azCols); rc = sqlite3ApiExit(db, rc); - if( rc!=SQLITE_OK && ALWAYS(rc==sqlite3_errcode(db)) && pzErrMsg ){ + if( rc!=SQLITE_OK && pzErrMsg ){ int nErrMsg = 1 + sqlite3Strlen30(sqlite3_errmsg(db)); *pzErrMsg = sqlite3Malloc(nErrMsg); if( *pzErrMsg ){ memcpy(*pzErrMsg, sqlite3_errmsg(db), nErrMsg); }else{ - rc = SQLITE_NOMEM; - sqlite3Error(db, SQLITE_NOMEM, 0); + rc = SQLITE_NOMEM_BKPT; + sqlite3Error(db, SQLITE_NOMEM); } }else if( pzErrMsg ){ *pzErrMsg = 0; @@ -95092,10 +110749,9 @@ exec_out: ** as extensions by SQLite should #include this file instead of ** sqlite3.h. */ -#ifndef _SQLITE3EXT_H_ -#define _SQLITE3EXT_H_ - -typedef struct sqlite3_api_routines sqlite3_api_routines; +#ifndef SQLITE3EXT_H +#define SQLITE3EXT_H +/* #include "sqlite3.h" */ /* ** The following structure holds pointers to all of the SQLite API @@ -95104,7 +110760,7 @@ typedef struct sqlite3_api_routines sqlite3_api_routines; ** WARNING: In order to maintain backwards compatibility, add new ** interfaces to the end of this structure only. If you insert new ** interfaces in the middle of this structure, then older different -** versions of SQLite will not be able to load each others' shared +** versions of SQLite will not be able to load each other's shared ** libraries! */ struct sqlite3_api_routines { @@ -95326,11 +110982,55 @@ struct sqlite3_api_routines { const char *(*uri_parameter)(const char*,const char*); char *(*vsnprintf)(int,char*,const char*,va_list); int (*wal_checkpoint_v2)(sqlite3*,const char*,int,int*,int*); + /* Version 3.8.7 and later */ + int (*auto_extension)(void(*)(void)); + int (*bind_blob64)(sqlite3_stmt*,int,const void*,sqlite3_uint64, + void(*)(void*)); + int (*bind_text64)(sqlite3_stmt*,int,const char*,sqlite3_uint64, + void(*)(void*),unsigned char); + int (*cancel_auto_extension)(void(*)(void)); + int (*load_extension)(sqlite3*,const char*,const char*,char**); + void *(*malloc64)(sqlite3_uint64); + sqlite3_uint64 (*msize)(void*); + void *(*realloc64)(void*,sqlite3_uint64); + void (*reset_auto_extension)(void); + void (*result_blob64)(sqlite3_context*,const void*,sqlite3_uint64, + void(*)(void*)); + void (*result_text64)(sqlite3_context*,const char*,sqlite3_uint64, + void(*)(void*), unsigned char); + int (*strglob)(const char*,const char*); + /* Version 3.8.11 and later */ + sqlite3_value *(*value_dup)(const sqlite3_value*); + void (*value_free)(sqlite3_value*); + int (*result_zeroblob64)(sqlite3_context*,sqlite3_uint64); + int (*bind_zeroblob64)(sqlite3_stmt*, int, sqlite3_uint64); + /* Version 3.9.0 and later */ + unsigned int (*value_subtype)(sqlite3_value*); + void (*result_subtype)(sqlite3_context*,unsigned int); + /* Version 3.10.0 and later */ + int (*status64)(int,sqlite3_int64*,sqlite3_int64*,int); + int (*strlike)(const char*,const char*,unsigned int); + int (*db_cacheflush)(sqlite3*); + /* Version 3.12.0 and later */ + int (*system_errno)(sqlite3*); + /* Version 3.14.0 and later */ + int (*trace_v2)(sqlite3*,unsigned,int(*)(unsigned,void*,void*,void*),void*); + char *(*expanded_sql)(sqlite3_stmt*); }; +/* +** This is the function signature used for all extension entry points. It +** is also defined in the file "loadext.c". +*/ +typedef int (*sqlite3_loadext_entry)( + sqlite3 *db, /* Handle to the database. */ + char **pzErrMsg, /* Used to set error string on failure. */ + const sqlite3_api_routines *pThunk /* Extension API function pointers. */ +); + /* ** The following macros redefine the API routines so that they are -** redirected throught the global sqlite3_api structure. +** redirected through the global sqlite3_api structure. ** ** This header file is also used by the loadext.c source file ** (part of the main SQLite library - not an extension) so that @@ -95339,7 +111039,7 @@ struct sqlite3_api_routines { ** the API. So the redefinition macros are only valid if the ** SQLITE_CORE macros is undefined. */ -#ifndef SQLITE_CORE +#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) #define sqlite3_aggregate_context sqlite3_api->aggregate_context #ifndef SQLITE_OMIT_DEPRECATED #define sqlite3_aggregate_count sqlite3_api->aggregate_count @@ -95466,6 +111166,7 @@ struct sqlite3_api_routines { #define sqlite3_value_text16le sqlite3_api->value_text16le #define sqlite3_value_type sqlite3_api->value_type #define sqlite3_vmprintf sqlite3_api->vmprintf +#define sqlite3_vsnprintf sqlite3_api->vsnprintf #define sqlite3_overload_function sqlite3_api->overload_function #define sqlite3_prepare_v2 sqlite3_api->prepare_v2 #define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2 @@ -95543,9 +111244,39 @@ struct sqlite3_api_routines { #define sqlite3_uri_parameter sqlite3_api->uri_parameter #define sqlite3_uri_vsnprintf sqlite3_api->vsnprintf #define sqlite3_wal_checkpoint_v2 sqlite3_api->wal_checkpoint_v2 -#endif /* SQLITE_CORE */ +/* Version 3.8.7 and later */ +#define sqlite3_auto_extension sqlite3_api->auto_extension +#define sqlite3_bind_blob64 sqlite3_api->bind_blob64 +#define sqlite3_bind_text64 sqlite3_api->bind_text64 +#define sqlite3_cancel_auto_extension sqlite3_api->cancel_auto_extension +#define sqlite3_load_extension sqlite3_api->load_extension +#define sqlite3_malloc64 sqlite3_api->malloc64 +#define sqlite3_msize sqlite3_api->msize +#define sqlite3_realloc64 sqlite3_api->realloc64 +#define sqlite3_reset_auto_extension sqlite3_api->reset_auto_extension +#define sqlite3_result_blob64 sqlite3_api->result_blob64 +#define sqlite3_result_text64 sqlite3_api->result_text64 +#define sqlite3_strglob sqlite3_api->strglob +/* Version 3.8.11 and later */ +#define sqlite3_value_dup sqlite3_api->value_dup +#define sqlite3_value_free sqlite3_api->value_free +#define sqlite3_result_zeroblob64 sqlite3_api->result_zeroblob64 +#define sqlite3_bind_zeroblob64 sqlite3_api->bind_zeroblob64 +/* Version 3.9.0 and later */ +#define sqlite3_value_subtype sqlite3_api->value_subtype +#define sqlite3_result_subtype sqlite3_api->result_subtype +/* Version 3.10.0 and later */ +#define sqlite3_status64 sqlite3_api->status64 +#define sqlite3_strlike sqlite3_api->strlike +#define sqlite3_db_cacheflush sqlite3_api->db_cacheflush +/* Version 3.12.0 and later */ +#define sqlite3_system_errno sqlite3_api->system_errno +/* Version 3.14.0 and later */ +#define sqlite3_trace_v2 sqlite3_api->trace_v2 +#define sqlite3_expanded_sql sqlite3_api->expanded_sql +#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */ -#ifndef SQLITE_CORE +#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) /* This case when the file really is being compiled as a loadable ** extension */ # define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0; @@ -95560,14 +111291,13 @@ struct sqlite3_api_routines { # define SQLITE_EXTENSION_INIT3 /*no-op*/ #endif -#endif /* _SQLITE3EXT_H_ */ +#endif /* SQLITE3EXT_H */ /************** End of sqlite3ext.h ******************************************/ /************** Continuing where we left off in loadext.c ********************/ -/* #include */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_LOAD_EXTENSION - /* ** Some API routines are omitted when various features are ** excluded from a build of SQLite. Substitute a NULL pointer @@ -95580,7 +111310,6 @@ struct sqlite3_api_routines { # define sqlite3_column_table_name16 0 # define sqlite3_column_origin_name 0 # define sqlite3_column_origin_name16 0 -# define sqlite3_table_column_metadata 0 #endif #ifdef SQLITE_OMIT_AUTHORIZATION @@ -95638,7 +111367,7 @@ struct sqlite3_api_routines { # define sqlite3_enable_shared_cache 0 #endif -#ifdef SQLITE_OMIT_TRACE +#if defined(SQLITE_OMIT_TRACE) || defined(SQLITE_OMIT_DEPRECATED) # define sqlite3_profile 0 # define sqlite3_trace 0 #endif @@ -95658,6 +111387,10 @@ struct sqlite3_api_routines { #define sqlite3_blob_reopen 0 #endif +#if defined(SQLITE_OMIT_TRACE) +# define sqlite3_trace_v2 0 +#endif + /* ** The following structure contains pointers to all SQLite API routines. ** A pointer to this structure is passed into extensions when they are @@ -95936,7 +111669,37 @@ static const sqlite3_api_routines sqlite3Apis = { sqlite3_uri_int64, sqlite3_uri_parameter, sqlite3_vsnprintf, - sqlite3_wal_checkpoint_v2 + sqlite3_wal_checkpoint_v2, + /* Version 3.8.7 and later */ + sqlite3_auto_extension, + sqlite3_bind_blob64, + sqlite3_bind_text64, + sqlite3_cancel_auto_extension, + sqlite3_load_extension, + sqlite3_malloc64, + sqlite3_msize, + sqlite3_realloc64, + sqlite3_reset_auto_extension, + sqlite3_result_blob64, + sqlite3_result_text64, + sqlite3_strglob, + /* Version 3.8.11 and later */ + (sqlite3_value*(*)(const sqlite3_value*))sqlite3_value_dup, + sqlite3_value_free, + sqlite3_result_zeroblob64, + sqlite3_bind_zeroblob64, + /* Version 3.9.0 and later */ + sqlite3_value_subtype, + sqlite3_result_subtype, + /* Version 3.10.0 and later */ + sqlite3_status64, + sqlite3_strlike, + sqlite3_db_cacheflush, + /* Version 3.12.0 and later */ + sqlite3_system_errno, + /* Version 3.14.0 and later */ + sqlite3_trace_v2, + sqlite3_expanded_sql }; /* @@ -95959,13 +111722,14 @@ static int sqlite3LoadExtension( ){ sqlite3_vfs *pVfs = db->pVfs; void *handle; - int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*); + sqlite3_loadext_entry xInit; char *zErrmsg = 0; const char *zEntry; char *zAltEntry = 0; void **aHandle; - int nMsg = 300 + sqlite3Strlen30(zFile); + u64 nMsg = 300 + sqlite3Strlen30(zFile); int ii; + int rc; /* Shared library endings to try if zFile cannot be loaded as written */ static const char *azEndings[] = { @@ -95984,8 +111748,9 @@ static int sqlite3LoadExtension( /* Ticket #1863. To avoid a creating security problems for older ** applications that relink against newer versions of SQLite, the ** ability to run load_extension is turned off by default. One - ** must call sqlite3_enable_load_extension() to turn on extension - ** loading. Otherwise you get the following error. + ** must call either sqlite3_enable_load_extension(db) or + ** sqlite3_db_config(db, SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, 1, 0) + ** to turn on extension loading. */ if( (db->flags & SQLITE_LoadExtension)==0 ){ if( pzErrMsg ){ @@ -96000,14 +111765,14 @@ static int sqlite3LoadExtension( #if SQLITE_OS_UNIX || SQLITE_OS_WIN for(ii=0; ii=0 && zFile[iFile]!='/'; iFile--){} @@ -96049,13 +111813,12 @@ static int sqlite3LoadExtension( } memcpy(zAltEntry+iEntry, "_init", 6); zEntry = zAltEntry; - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - sqlite3OsDlSym(pVfs, handle, zEntry); + xInit = (sqlite3_loadext_entry)sqlite3OsDlSym(pVfs, handle, zEntry); } if( xInit==0 ){ if( pzErrMsg ){ nMsg += sqlite3Strlen30(zEntry); - *pzErrMsg = zErrmsg = sqlite3_malloc(nMsg); + *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg); if( zErrmsg ){ sqlite3_snprintf(nMsg, zErrmsg, "no entry point [%s] in shared library [%s]", zEntry, zFile); @@ -96067,7 +111830,9 @@ static int sqlite3LoadExtension( return SQLITE_ERROR; } sqlite3_free(zAltEntry); - if( xInit(db, &zErrmsg, &sqlite3Apis) ){ + rc = xInit(db, &zErrmsg, &sqlite3Apis); + if( rc ){ + if( rc==SQLITE_OK_LOAD_PERMANENTLY ) return SQLITE_OK; if( pzErrMsg ){ *pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg); } @@ -96079,7 +111844,7 @@ static int sqlite3LoadExtension( /* Append the new shared library handle to the db->aExtension array. */ aHandle = sqlite3DbMallocZero(db, sizeof(handle)*(db->nExtension+1)); if( aHandle==0 ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } if( db->nExtension>0 ){ memcpy(aHandle, db->aExtension, sizeof(handle)*db->nExtension); @@ -96124,26 +111889,15 @@ SQLITE_PRIVATE void sqlite3CloseExtensions(sqlite3 *db){ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ sqlite3_mutex_enter(db->mutex); if( onoff ){ - db->flags |= SQLITE_LoadExtension; + db->flags |= SQLITE_LoadExtension|SQLITE_LoadExtFunc; }else{ - db->flags &= ~SQLITE_LoadExtension; + db->flags &= ~(SQLITE_LoadExtension|SQLITE_LoadExtFunc); } sqlite3_mutex_leave(db->mutex); return SQLITE_OK; } -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ - -/* -** The auto-extension code added regardless of whether or not extension -** loading is supported. We need a dummy sqlite3Apis pointer for that -** code if regular extension loading is not available. This is that -** dummy pointer. -*/ -#ifdef SQLITE_OMIT_LOAD_EXTENSION -static const sqlite3_api_routines sqlite3Apis = { 0 }; -#endif - +#endif /* !defined(SQLITE_OMIT_LOAD_EXTENSION) */ /* ** The following object holds the list of automatically loaded @@ -96154,7 +111908,7 @@ static const sqlite3_api_routines sqlite3Apis = { 0 }; */ typedef struct sqlite3AutoExtList sqlite3AutoExtList; static SQLITE_WSD struct sqlite3AutoExtList { - int nExt; /* Number of entries in aExt[] */ + u32 nExt; /* Number of entries in aExt[] */ void (**aExt)(void); /* Pointers to the extension init functions */ } sqlite3Autoext = { 0, 0 }; @@ -96178,7 +111932,9 @@ static SQLITE_WSD struct sqlite3AutoExtList { ** Register a statically linked extension that is automatically ** loaded by every new database connection. */ -SQLITE_API int sqlite3_auto_extension(void (*xInit)(void)){ +SQLITE_API int sqlite3_auto_extension( + void (*xInit)(void) +){ int rc = SQLITE_OK; #ifndef SQLITE_OMIT_AUTOINIT rc = sqlite3_initialize(); @@ -96187,7 +111943,7 @@ SQLITE_API int sqlite3_auto_extension(void (*xInit)(void)){ }else #endif { - int i; + u32 i; #if SQLITE_THREADSAFE sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); #endif @@ -96197,11 +111953,11 @@ SQLITE_API int sqlite3_auto_extension(void (*xInit)(void)){ if( wsdAutoext.aExt[i]==xInit ) break; } if( i==wsdAutoext.nExt ){ - int nByte = (wsdAutoext.nExt+1)*sizeof(wsdAutoext.aExt[0]); + u64 nByte = (wsdAutoext.nExt+1)*sizeof(wsdAutoext.aExt[0]); void (**aNew)(void); - aNew = sqlite3_realloc(wsdAutoext.aExt, nByte); + aNew = sqlite3_realloc64(wsdAutoext.aExt, nByte); if( aNew==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ wsdAutoext.aExt = aNew; wsdAutoext.aExt[wsdAutoext.nExt] = xInit; @@ -96223,7 +111979,9 @@ SQLITE_API int sqlite3_auto_extension(void (*xInit)(void)){ ** Return 1 if xInit was found on the list and removed. Return 0 if xInit ** was not on the list. */ -SQLITE_API int sqlite3_cancel_auto_extension(void (*xInit)(void)){ +SQLITE_API int sqlite3_cancel_auto_extension( + void (*xInit)(void) +){ #if SQLITE_THREADSAFE sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); #endif @@ -96231,7 +111989,7 @@ SQLITE_API int sqlite3_cancel_auto_extension(void (*xInit)(void)){ int n = 0; wsdAutoextInit; sqlite3_mutex_enter(mutex); - for(i=wsdAutoext.nExt-1; i>=0; i--){ + for(i=(int)wsdAutoext.nExt-1; i>=0; i--){ if( wsdAutoext.aExt[i]==xInit ){ wsdAutoext.nExt--; wsdAutoext.aExt[i] = wsdAutoext.aExt[wsdAutoext.nExt]; @@ -96269,10 +112027,10 @@ SQLITE_API void sqlite3_reset_auto_extension(void){ ** If anything goes wrong, set an error in the database connection. */ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ - int i; + u32 i; int go = 1; int rc; - int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*); + sqlite3_loadext_entry xInit; wsdAutoextInit; if( wsdAutoext.nExt==0 ){ @@ -96283,19 +112041,23 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ char *zErrmsg; #if SQLITE_THREADSAFE sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); +#endif +#ifdef SQLITE_OMIT_LOAD_EXTENSION + const sqlite3_api_routines *pThunk = 0; +#else + const sqlite3_api_routines *pThunk = &sqlite3Apis; #endif sqlite3_mutex_enter(mutex); if( i>=wsdAutoext.nExt ){ xInit = 0; go = 0; }else{ - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - wsdAutoext.aExt[i]; + xInit = (sqlite3_loadext_entry)wsdAutoext.aExt[i]; } sqlite3_mutex_leave(mutex); zErrmsg = 0; - if( xInit && (rc = xInit(db, &zErrmsg, &sqlite3Apis))!=0 ){ - sqlite3Error(db, rc, + if( xInit && (rc = xInit(db, &zErrmsg, pThunk))!=0 ){ + sqlite3ErrorWithMsg(db, rc, "automatic extension loading failed: %s", zErrmsg); go = 0; } @@ -96318,6 +112080,7 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ ************************************************************************* ** This file contains code used to implement the PRAGMA command. */ +/* #include "sqliteInt.h" */ #if !defined(SQLITE_ENABLE_LOCKING_STYLE) # if defined(__APPLE__) @@ -96328,457 +112091,629 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){ #endif /*************************************************************************** -** The next block of code, including the PragTyp_XXXX macro definitions and -** the aPragmaName[] object is composed of generated code. DO NOT EDIT. -** -** To add new pragmas, edit the code in ../tool/mkpragmatab.tcl and rerun -** that script. Then copy/paste the output in place of the following: +** The "pragma.h" include file is an automatically generated file that +** that includes the PragType_XXXX macro definitions and the aPragmaName[] +** object. This ensures that the aPragmaName[] table is arranged in +** lexicographical order to facility a binary search of the pragma name. +** Do not edit pragma.h directly. Edit and rerun the script in at +** ../tool/mkpragmatab.tcl. */ +/************** Include pragma.h in the middle of pragma.c *******************/ +/************** Begin file pragma.h ******************************************/ +/* DO NOT EDIT! +** This file is automatically generated by the script at +** ../tool/mkpragmatab.tcl. To update the set of pragmas, edit +** that script and rerun it. */ + +/* The various pragma types */ #define PragTyp_HEADER_VALUE 0 #define PragTyp_AUTO_VACUUM 1 #define PragTyp_FLAG 2 #define PragTyp_BUSY_TIMEOUT 3 #define PragTyp_CACHE_SIZE 4 -#define PragTyp_CASE_SENSITIVE_LIKE 5 -#define PragTyp_COLLATION_LIST 6 -#define PragTyp_COMPILE_OPTIONS 7 -#define PragTyp_DATA_STORE_DIRECTORY 8 -#define PragTyp_DATABASE_LIST 9 -#define PragTyp_DEFAULT_CACHE_SIZE 10 -#define PragTyp_ENCODING 11 -#define PragTyp_FOREIGN_KEY_CHECK 12 -#define PragTyp_FOREIGN_KEY_LIST 13 -#define PragTyp_INCREMENTAL_VACUUM 14 -#define PragTyp_INDEX_INFO 15 -#define PragTyp_INDEX_LIST 16 -#define PragTyp_INTEGRITY_CHECK 17 -#define PragTyp_JOURNAL_MODE 18 -#define PragTyp_JOURNAL_SIZE_LIMIT 19 -#define PragTyp_LOCK_PROXY_FILE 20 -#define PragTyp_LOCKING_MODE 21 -#define PragTyp_PAGE_COUNT 22 -#define PragTyp_MMAP_SIZE 23 -#define PragTyp_PAGE_SIZE 24 -#define PragTyp_SECURE_DELETE 25 -#define PragTyp_SHRINK_MEMORY 26 -#define PragTyp_SOFT_HEAP_LIMIT 27 -#define PragTyp_STATS 28 -#define PragTyp_SYNCHRONOUS 29 -#define PragTyp_TABLE_INFO 30 -#define PragTyp_TEMP_STORE 31 -#define PragTyp_TEMP_STORE_DIRECTORY 32 -#define PragTyp_WAL_AUTOCHECKPOINT 33 -#define PragTyp_WAL_CHECKPOINT 34 -#define PragTyp_ACTIVATE_EXTENSIONS 35 -#define PragTyp_HEXKEY 36 -#define PragTyp_KEY 37 -#define PragTyp_REKEY 38 -#define PragTyp_LOCK_STATUS 39 -#define PragTyp_PARSER_TRACE 40 -#define PragFlag_NeedSchema 0x01 -static const struct sPragmaNames { - const char *const zName; /* Name of pragma */ - u8 ePragTyp; /* PragTyp_XXX value */ - u8 mPragFlag; /* Zero or more PragFlag_XXX values */ - u32 iArg; /* Extra argument */ -} aPragmaNames[] = { +#define PragTyp_CACHE_SPILL 5 +#define PragTyp_CASE_SENSITIVE_LIKE 6 +#define PragTyp_COLLATION_LIST 7 +#define PragTyp_COMPILE_OPTIONS 8 +#define PragTyp_DATA_STORE_DIRECTORY 9 +#define PragTyp_DATABASE_LIST 10 +#define PragTyp_DEFAULT_CACHE_SIZE 11 +#define PragTyp_ENCODING 12 +#define PragTyp_FOREIGN_KEY_CHECK 13 +#define PragTyp_FOREIGN_KEY_LIST 14 +#define PragTyp_INCREMENTAL_VACUUM 15 +#define PragTyp_INDEX_INFO 16 +#define PragTyp_INDEX_LIST 17 +#define PragTyp_INTEGRITY_CHECK 18 +#define PragTyp_JOURNAL_MODE 19 +#define PragTyp_JOURNAL_SIZE_LIMIT 20 +#define PragTyp_LOCK_PROXY_FILE 21 +#define PragTyp_LOCKING_MODE 22 +#define PragTyp_PAGE_COUNT 23 +#define PragTyp_MMAP_SIZE 24 +#define PragTyp_PAGE_SIZE 25 +#define PragTyp_SECURE_DELETE 26 +#define PragTyp_SHRINK_MEMORY 27 +#define PragTyp_SOFT_HEAP_LIMIT 28 +#define PragTyp_STATS 29 +#define PragTyp_SYNCHRONOUS 30 +#define PragTyp_TABLE_INFO 31 +#define PragTyp_TEMP_STORE 32 +#define PragTyp_TEMP_STORE_DIRECTORY 33 +#define PragTyp_THREADS 34 +#define PragTyp_WAL_AUTOCHECKPOINT 35 +#define PragTyp_WAL_CHECKPOINT 36 +#define PragTyp_ACTIVATE_EXTENSIONS 37 +#define PragTyp_HEXKEY 38 +#define PragTyp_KEY 39 +#define PragTyp_REKEY 40 +#define PragTyp_LOCK_STATUS 41 +#define PragTyp_PARSER_TRACE 42 + +/* Property flags associated with various pragma. */ +#define PragFlg_NeedSchema 0x01 /* Force schema load before running */ +#define PragFlg_NoColumns 0x02 /* OP_ResultRow called with zero columns */ +#define PragFlg_NoColumns1 0x04 /* zero columns if RHS argument is present */ +#define PragFlg_ReadOnly 0x08 /* Read-only HEADER_VALUE */ +#define PragFlg_Result0 0x10 /* Acts as query when no argument */ +#define PragFlg_Result1 0x20 /* Acts as query when has one argument */ +#define PragFlg_SchemaOpt 0x40 /* Schema restricts name search if present */ +#define PragFlg_SchemaReq 0x80 /* Schema required - "main" is default */ + +/* Names of columns for pragmas that return multi-column result +** or that return single-column results where the name of the +** result column is different from the name of the pragma +*/ +static const char *const pragCName[] = { + /* 0 */ "cache_size", /* Used by: default_cache_size */ + /* 1 */ "cid", /* Used by: table_info */ + /* 2 */ "name", + /* 3 */ "type", + /* 4 */ "notnull", + /* 5 */ "dflt_value", + /* 6 */ "pk", + /* 7 */ "table", /* Used by: stats */ + /* 8 */ "index", + /* 9 */ "width", + /* 10 */ "height", + /* 11 */ "seqno", /* Used by: index_info */ + /* 12 */ "cid", + /* 13 */ "name", + /* 14 */ "seqno", /* Used by: index_xinfo */ + /* 15 */ "cid", + /* 16 */ "name", + /* 17 */ "desc", + /* 18 */ "coll", + /* 19 */ "key", + /* 20 */ "seq", /* Used by: index_list */ + /* 21 */ "name", + /* 22 */ "unique", + /* 23 */ "origin", + /* 24 */ "partial", + /* 25 */ "seq", /* Used by: database_list */ + /* 26 */ "name", + /* 27 */ "file", + /* 28 */ "seq", /* Used by: collation_list */ + /* 29 */ "name", + /* 30 */ "id", /* Used by: foreign_key_list */ + /* 31 */ "seq", + /* 32 */ "table", + /* 33 */ "from", + /* 34 */ "to", + /* 35 */ "on_update", + /* 36 */ "on_delete", + /* 37 */ "match", + /* 38 */ "table", /* Used by: foreign_key_check */ + /* 39 */ "rowid", + /* 40 */ "parent", + /* 41 */ "fkid", + /* 42 */ "busy", /* Used by: wal_checkpoint */ + /* 43 */ "log", + /* 44 */ "checkpointed", + /* 45 */ "timeout", /* Used by: busy_timeout */ + /* 46 */ "database", /* Used by: lock_status */ + /* 47 */ "status", +}; + +/* Definitions of all built-in pragmas */ +typedef struct PragmaName { + const char *const zName; /* Name of pragma */ + u8 ePragTyp; /* PragTyp_XXX value */ + u8 mPragFlg; /* Zero or more PragFlg_XXX values */ + u8 iPragCName; /* Start of column names in pragCName[] */ + u8 nPragCName; /* Num of col names. 0 means use pragma name */ + u32 iArg; /* Extra argument */ +} PragmaName; +static const PragmaName aPragmaName[] = { #if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD) - { /* zName: */ "activate_extensions", - /* ePragTyp: */ PragTyp_ACTIVATE_EXTENSIONS, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "activate_extensions", + /* ePragTyp: */ PragTyp_ACTIVATE_EXTENSIONS, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) - { /* zName: */ "application_id", - /* ePragTyp: */ PragTyp_HEADER_VALUE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "application_id", + /* ePragTyp: */ PragTyp_HEADER_VALUE, + /* ePragFlg: */ PragFlg_NoColumns1|PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ BTREE_APPLICATION_ID }, #endif #if !defined(SQLITE_OMIT_AUTOVACUUM) - { /* zName: */ "auto_vacuum", - /* ePragTyp: */ PragTyp_AUTO_VACUUM, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "auto_vacuum", + /* ePragTyp: */ PragTyp_AUTO_VACUUM, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if !defined(SQLITE_OMIT_AUTOMATIC_INDEX) - { /* zName: */ "automatic_index", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_AutoIndex }, + {/* zName: */ "automatic_index", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_AutoIndex }, #endif #endif - { /* zName: */ "busy_timeout", - /* ePragTyp: */ PragTyp_BUSY_TIMEOUT, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "busy_timeout", + /* ePragTyp: */ PragTyp_BUSY_TIMEOUT, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 45, 1, + /* iArg: */ 0 }, #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "cache_size", - /* ePragTyp: */ PragTyp_CACHE_SIZE, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "cache_size", + /* ePragTyp: */ PragTyp_CACHE_SIZE, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "cache_spill", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_CacheSpill }, + {/* zName: */ "cache_spill", + /* ePragTyp: */ PragTyp_CACHE_SPILL, + /* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif - { /* zName: */ "case_sensitive_like", - /* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "case_sensitive_like", + /* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE, + /* ePragFlg: */ PragFlg_NoColumns, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "cell_size_check", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_CellSizeCk }, #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "checkpoint_fullfsync", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_CkptFullFSync }, + {/* zName: */ "checkpoint_fullfsync", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_CkptFullFSync }, #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) - { /* zName: */ "collation_list", - /* ePragTyp: */ PragTyp_COLLATION_LIST, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "collation_list", + /* ePragTyp: */ PragTyp_COLLATION_LIST, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 28, 2, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_COMPILEOPTION_DIAGS) - { /* zName: */ "compile_options", - /* ePragTyp: */ PragTyp_COMPILE_OPTIONS, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "compile_options", + /* ePragTyp: */ PragTyp_COMPILE_OPTIONS, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "count_changes", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_CountRows }, + {/* zName: */ "count_changes", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_CountRows }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_OS_WIN - { /* zName: */ "data_store_directory", - /* ePragTyp: */ PragTyp_DATA_STORE_DIRECTORY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "data_store_directory", + /* ePragTyp: */ PragTyp_DATA_STORE_DIRECTORY, + /* ePragFlg: */ PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, +#endif +#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) + {/* zName: */ "data_version", + /* ePragTyp: */ PragTyp_HEADER_VALUE, + /* ePragFlg: */ PragFlg_ReadOnly|PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ BTREE_DATA_VERSION }, #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) - { /* zName: */ "database_list", - /* ePragTyp: */ PragTyp_DATABASE_LIST, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "database_list", + /* ePragTyp: */ PragTyp_DATABASE_LIST, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0, + /* ColNames: */ 25, 3, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED) - { /* zName: */ "default_cache_size", - /* ePragTyp: */ PragTyp_DEFAULT_CACHE_SIZE, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "default_cache_size", + /* ePragTyp: */ PragTyp_DEFAULT_CACHE_SIZE, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 1, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - { /* zName: */ "defer_foreign_keys", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_DeferFKs }, + {/* zName: */ "defer_foreign_keys", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_DeferFKs }, #endif #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "empty_result_callbacks", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_NullCallback }, + {/* zName: */ "empty_result_callbacks", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_NullCallback }, #endif #if !defined(SQLITE_OMIT_UTF16) - { /* zName: */ "encoding", - /* ePragTyp: */ PragTyp_ENCODING, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "encoding", + /* ePragTyp: */ PragTyp_ENCODING, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - { /* zName: */ "foreign_key_check", - /* ePragTyp: */ PragTyp_FOREIGN_KEY_CHECK, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "foreign_key_check", + /* ePragTyp: */ PragTyp_FOREIGN_KEY_CHECK, + /* ePragFlg: */ PragFlg_NeedSchema, + /* ColNames: */ 38, 4, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FOREIGN_KEY) - { /* zName: */ "foreign_key_list", - /* ePragTyp: */ PragTyp_FOREIGN_KEY_LIST, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "foreign_key_list", + /* ePragTyp: */ PragTyp_FOREIGN_KEY_LIST, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 30, 8, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - { /* zName: */ "foreign_keys", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_ForeignKeys }, + {/* zName: */ "foreign_keys", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_ForeignKeys }, #endif #endif #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) - { /* zName: */ "freelist_count", - /* ePragTyp: */ PragTyp_HEADER_VALUE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "freelist_count", + /* ePragTyp: */ PragTyp_HEADER_VALUE, + /* ePragFlg: */ PragFlg_ReadOnly|PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ BTREE_FREE_PAGE_COUNT }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "full_column_names", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_FullColNames }, - { /* zName: */ "fullfsync", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_FullFSync }, + {/* zName: */ "full_column_names", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_FullColNames }, + {/* zName: */ "fullfsync", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_FullFSync }, #endif #if defined(SQLITE_HAS_CODEC) - { /* zName: */ "hexkey", - /* ePragTyp: */ PragTyp_HEXKEY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "hexrekey", - /* ePragTyp: */ PragTyp_HEXKEY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "hexkey", + /* ePragTyp: */ PragTyp_HEXKEY, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "hexrekey", + /* ePragTyp: */ PragTyp_HEXKEY, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if !defined(SQLITE_OMIT_CHECK) - { /* zName: */ "ignore_check_constraints", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_IgnoreChecks }, + {/* zName: */ "ignore_check_constraints", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_IgnoreChecks }, #endif #endif #if !defined(SQLITE_OMIT_AUTOVACUUM) - { /* zName: */ "incremental_vacuum", - /* ePragTyp: */ PragTyp_INCREMENTAL_VACUUM, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "incremental_vacuum", + /* ePragTyp: */ PragTyp_INCREMENTAL_VACUUM, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_NoColumns, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) - { /* zName: */ "index_info", - /* ePragTyp: */ PragTyp_INDEX_INFO, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, - { /* zName: */ "index_list", - /* ePragTyp: */ PragTyp_INDEX_LIST, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "index_info", + /* ePragTyp: */ PragTyp_INDEX_INFO, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 11, 3, + /* iArg: */ 0 }, + {/* zName: */ "index_list", + /* ePragTyp: */ PragTyp_INDEX_LIST, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 20, 5, + /* iArg: */ 0 }, + {/* zName: */ "index_xinfo", + /* ePragTyp: */ PragTyp_INDEX_INFO, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 14, 6, + /* iArg: */ 1 }, #endif #if !defined(SQLITE_OMIT_INTEGRITY_CHECK) - { /* zName: */ "integrity_check", - /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "integrity_check", + /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, + /* ePragFlg: */ PragFlg_NeedSchema, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "journal_mode", - /* ePragTyp: */ PragTyp_JOURNAL_MODE, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, - { /* zName: */ "journal_size_limit", - /* ePragTyp: */ PragTyp_JOURNAL_SIZE_LIMIT, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "journal_mode", + /* ePragTyp: */ PragTyp_JOURNAL_MODE, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "journal_size_limit", + /* ePragTyp: */ PragTyp_JOURNAL_SIZE_LIMIT, + /* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if defined(SQLITE_HAS_CODEC) - { /* zName: */ "key", - /* ePragTyp: */ PragTyp_KEY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "key", + /* ePragTyp: */ PragTyp_KEY, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "legacy_file_format", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_LegacyFileFmt }, + {/* zName: */ "legacy_file_format", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_LegacyFileFmt }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_ENABLE_LOCKING_STYLE - { /* zName: */ "lock_proxy_file", - /* ePragTyp: */ PragTyp_LOCK_PROXY_FILE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "lock_proxy_file", + /* ePragTyp: */ PragTyp_LOCK_PROXY_FILE, + /* ePragFlg: */ PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) - { /* zName: */ "lock_status", - /* ePragTyp: */ PragTyp_LOCK_STATUS, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "lock_status", + /* ePragTyp: */ PragTyp_LOCK_STATUS, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 46, 2, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "locking_mode", - /* ePragTyp: */ PragTyp_LOCKING_MODE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "max_page_count", - /* ePragTyp: */ PragTyp_PAGE_COUNT, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, - { /* zName: */ "mmap_size", - /* ePragTyp: */ PragTyp_MMAP_SIZE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "page_count", - /* ePragTyp: */ PragTyp_PAGE_COUNT, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, - { /* zName: */ "page_size", - /* ePragTyp: */ PragTyp_PAGE_SIZE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "locking_mode", + /* ePragTyp: */ PragTyp_LOCKING_MODE, + /* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "max_page_count", + /* ePragTyp: */ PragTyp_PAGE_COUNT, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "mmap_size", + /* ePragTyp: */ PragTyp_MMAP_SIZE, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "page_count", + /* ePragTyp: */ PragTyp_PAGE_COUNT, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "page_size", + /* ePragTyp: */ PragTyp_PAGE_SIZE, + /* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif -#if defined(SQLITE_DEBUG) - { /* zName: */ "parser_trace", - /* ePragTyp: */ PragTyp_PARSER_TRACE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, +#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_PARSER_TRACE) + {/* zName: */ "parser_trace", + /* ePragTyp: */ PragTyp_PARSER_TRACE, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "query_only", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_QueryOnly }, + {/* zName: */ "query_only", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_QueryOnly }, #endif #if !defined(SQLITE_OMIT_INTEGRITY_CHECK) - { /* zName: */ "quick_check", - /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "quick_check", + /* ePragTyp: */ PragTyp_INTEGRITY_CHECK, + /* ePragFlg: */ PragFlg_NeedSchema, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "read_uncommitted", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_ReadUncommitted }, - { /* zName: */ "recursive_triggers", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_RecTriggers }, + {/* zName: */ "read_uncommitted", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_ReadUncommitted }, + {/* zName: */ "recursive_triggers", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_RecTriggers }, #endif #if defined(SQLITE_HAS_CODEC) - { /* zName: */ "rekey", - /* ePragTyp: */ PragTyp_REKEY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "rekey", + /* ePragTyp: */ PragTyp_REKEY, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "reverse_unordered_selects", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_ReverseOrder }, + {/* zName: */ "reverse_unordered_selects", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_ReverseOrder }, #endif #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) - { /* zName: */ "schema_version", - /* ePragTyp: */ PragTyp_HEADER_VALUE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "schema_version", + /* ePragTyp: */ PragTyp_HEADER_VALUE, + /* ePragFlg: */ PragFlg_NoColumns1|PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ BTREE_SCHEMA_VERSION }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "secure_delete", - /* ePragTyp: */ PragTyp_SECURE_DELETE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "secure_delete", + /* ePragTyp: */ PragTyp_SECURE_DELETE, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "short_column_names", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_ShortColNames }, + {/* zName: */ "short_column_names", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_ShortColNames }, #endif - { /* zName: */ "shrink_memory", - /* ePragTyp: */ PragTyp_SHRINK_MEMORY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "soft_heap_limit", - /* ePragTyp: */ PragTyp_SOFT_HEAP_LIMIT, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "shrink_memory", + /* ePragTyp: */ PragTyp_SHRINK_MEMORY, + /* ePragFlg: */ PragFlg_NoColumns, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "soft_heap_limit", + /* ePragTyp: */ PragTyp_SOFT_HEAP_LIMIT, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if defined(SQLITE_DEBUG) - { /* zName: */ "sql_trace", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_SqlTrace }, + {/* zName: */ "sql_trace", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_SqlTrace }, #endif #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) - { /* zName: */ "stats", - /* ePragTyp: */ PragTyp_STATS, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "stats", + /* ePragTyp: */ PragTyp_STATS, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq, + /* ColNames: */ 7, 4, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "synchronous", - /* ePragTyp: */ PragTyp_SYNCHRONOUS, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "synchronous", + /* ePragTyp: */ PragTyp_SYNCHRONOUS, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS) - { /* zName: */ "table_info", - /* ePragTyp: */ PragTyp_TABLE_INFO, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "table_info", + /* ePragTyp: */ PragTyp_TABLE_INFO, + /* ePragFlg: */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt, + /* ColNames: */ 1, 6, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) - { /* zName: */ "temp_store", - /* ePragTyp: */ PragTyp_TEMP_STORE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "temp_store_directory", - /* ePragTyp: */ PragTyp_TEMP_STORE_DIRECTORY, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "temp_store", + /* ePragTyp: */ PragTyp_TEMP_STORE, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "temp_store_directory", + /* ePragTyp: */ PragTyp_TEMP_STORE_DIRECTORY, + /* ePragFlg: */ PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #endif + {/* zName: */ "threads", + /* ePragTyp: */ PragTyp_THREADS, + /* ePragFlg: */ PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS) - { /* zName: */ "user_version", - /* ePragTyp: */ PragTyp_HEADER_VALUE, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, + {/* zName: */ "user_version", + /* ePragTyp: */ PragTyp_HEADER_VALUE, + /* ePragFlg: */ PragFlg_NoColumns1|PragFlg_Result0, + /* ColNames: */ 0, 0, + /* iArg: */ BTREE_USER_VERSION }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) #if defined(SQLITE_DEBUG) - { /* zName: */ "vdbe_addoptrace", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_VdbeAddopTrace }, - { /* zName: */ "vdbe_debug", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_SqlTrace|SQLITE_VdbeListing|SQLITE_VdbeTrace }, - { /* zName: */ "vdbe_eqp", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_VdbeEQP }, - { /* zName: */ "vdbe_listing", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_VdbeListing }, - { /* zName: */ "vdbe_trace", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_VdbeTrace }, + {/* zName: */ "vdbe_addoptrace", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_VdbeAddopTrace }, + {/* zName: */ "vdbe_debug", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_SqlTrace|SQLITE_VdbeListing|SQLITE_VdbeTrace }, + {/* zName: */ "vdbe_eqp", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_VdbeEQP }, + {/* zName: */ "vdbe_listing", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_VdbeListing }, + {/* zName: */ "vdbe_trace", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_VdbeTrace }, #endif #endif #if !defined(SQLITE_OMIT_WAL) - { /* zName: */ "wal_autocheckpoint", - /* ePragTyp: */ PragTyp_WAL_AUTOCHECKPOINT, - /* ePragFlag: */ 0, - /* iArg: */ 0 }, - { /* zName: */ "wal_checkpoint", - /* ePragTyp: */ PragTyp_WAL_CHECKPOINT, - /* ePragFlag: */ PragFlag_NeedSchema, - /* iArg: */ 0 }, + {/* zName: */ "wal_autocheckpoint", + /* ePragTyp: */ PragTyp_WAL_AUTOCHECKPOINT, + /* ePragFlg: */ 0, + /* ColNames: */ 0, 0, + /* iArg: */ 0 }, + {/* zName: */ "wal_checkpoint", + /* ePragTyp: */ PragTyp_WAL_CHECKPOINT, + /* ePragFlg: */ PragFlg_NeedSchema, + /* ColNames: */ 42, 3, + /* iArg: */ 0 }, #endif #if !defined(SQLITE_OMIT_FLAG_PRAGMAS) - { /* zName: */ "writable_schema", - /* ePragTyp: */ PragTyp_FLAG, - /* ePragFlag: */ 0, - /* iArg: */ SQLITE_WriteSchema|SQLITE_RecoveryMode }, + {/* zName: */ "writable_schema", + /* ePragTyp: */ PragTyp_FLAG, + /* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1, + /* ColNames: */ 0, 0, + /* iArg: */ SQLITE_WriteSchema|SQLITE_RecoveryMode }, #endif }; -/* Number of pragmas: 56 on by default, 69 total. */ -/* End of the automatically generated pragma table. -***************************************************************************/ +/* Number of pragmas: 60 on by default, 73 total. */ + +/************** End of pragma.h **********************************************/ +/************** Continuing where we left off in pragma.c *********************/ /* ** Interpret the given string as a safety level. Return 0 for OFF, -** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or -** unrecognized string argument. The FULL option is disallowed +** 1 for ON or NORMAL, 2 for FULL, and 3 for EXTRA. Return 1 for an empty or +** unrecognized string argument. The FULL and EXTRA option is disallowed ** if the omitFull parameter it 1. ** ** Note that the values returned are one less that the values that @@ -96786,19 +112721,22 @@ static const struct sPragmaNames { ** to support legacy SQL code. The safety level used to be boolean ** and older scripts may have used numbers 0 for OFF and 1 for ON. */ -static u8 getSafetyLevel(const char *z, int omitFull, int dflt){ - /* 123456789 123456789 */ - static const char zText[] = "onoffalseyestruefull"; - static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 16}; - static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 4}; - static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 2}; +static u8 getSafetyLevel(const char *z, int omitFull, u8 dflt){ + /* 123456789 123456789 123 */ + static const char zText[] = "onoffalseyestruextrafull"; + static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 15, 20}; + static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 5, 4}; + static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 3, 2}; + /* on no off false yes true extra full */ int i, n; if( sqlite3Isdigit(*z) ){ return (u8)sqlite3Atoi(z); } n = sqlite3Strlen30(z); - for(i=0; inPragCName; + sqlite3VdbeSetNumCols(v, n==0 ? 1 : n); + if( n==0 ){ + sqlite3VdbeSetColName(v, 0, COLNAME_NAME, pPragma->zName, SQLITE_STATIC); + }else{ + int i, j; + for(i=0, j=pPragma->iPragCName; inMem; - i64 *pI64 = sqlite3DbMallocRaw(pParse->db, sizeof(value)); - if( pI64 ){ - memcpy(pI64, &value, sizeof(value)); +static void returnSingleInt(Vdbe *v, i64 value){ + sqlite3VdbeAddOp4Dup8(v, OP_Int64, 0, 1, 0, (const u8*)&value, P4_INT64); + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); +} + +/* +** Generate code to return a single text value. +*/ +static void returnSingleText( + Vdbe *v, /* Prepared statement under construction */ + const char *zValue /* Value to be returned */ +){ + if( zValue ){ + sqlite3VdbeLoadString(v, 1, (const char*)zValue); + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); } - sqlite3VdbeAddOp4(v, OP_Int64, 0, mem, 0, (char*)pI64, P4_INT64); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1); } @@ -96993,12 +112955,32 @@ SQLITE_PRIVATE const char *sqlite3JournalModename(int eMode){ return azModeName[eMode]; } +/* +** Locate a pragma in the aPragmaName[] array. +*/ +static const PragmaName *pragmaLocate(const char *zName){ + int upr, lwr, mid = 0, rc; + lwr = 0; + upr = ArraySize(aPragmaName)-1; + while( lwr<=upr ){ + mid = (lwr+upr)/2; + rc = sqlite3_stricmp(zName, aPragmaName[mid].zName); + if( rc==0 ) break; + if( rc<0 ){ + upr = mid - 1; + }else{ + lwr = mid + 1; + } + } + return lwr>upr ? 0 : &aPragmaName[mid]; +} + /* ** Process a pragma statement. ** ** Pragmas are of this form: ** -** PRAGMA [database.]id [= value] +** PRAGMA [schema.]id [= value] ** ** The identifier might also be a string. The value is a string, and ** identifier, or a number. If minusFlag is true, then the value is @@ -97010,8 +112992,8 @@ SQLITE_PRIVATE const char *sqlite3JournalModename(int eMode){ */ SQLITE_PRIVATE void sqlite3Pragma( Parse *pParse, - Token *pId1, /* First part of [database.]id field */ - Token *pId2, /* Second part of [database.]id field, or NULL */ + Token *pId1, /* First part of [schema.]id field */ + Token *pId2, /* Second part of [schema.]id field, or NULL */ Token *pValue, /* Token for , or NULL */ int minusFlag /* True if a '-' sign preceded */ ){ @@ -97021,17 +113003,17 @@ SQLITE_PRIVATE void sqlite3Pragma( Token *pId; /* Pointer to token */ char *aFcntl[4]; /* Argument to SQLITE_FCNTL_PRAGMA */ int iDb; /* Database index for */ - int lwr, upr, mid; /* Binary search bounds */ int rc; /* return value form SQLITE_FCNTL_PRAGMA */ sqlite3 *db = pParse->db; /* The database connection */ Db *pDb; /* The specific database being pragmaed */ Vdbe *v = sqlite3GetVdbe(pParse); /* Prepared statement */ + const PragmaName *pPragma; /* The pragma */ if( v==0 ) return; sqlite3VdbeRunOnlyOnce(v); pParse->nMem = 2; - /* Interpret the [database.] part of the pragma statement. iDb is the + /* Interpret the [schema.] part of the pragma statement. iDb is the ** index of the database this pragma is being applied to in db.aDb[]. */ iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId); if( iDb<0 ) return; @@ -97053,7 +113035,7 @@ SQLITE_PRIVATE void sqlite3Pragma( } assert( pId2 ); - zDb = pId2->n>0 ? pDb->zName : 0; + zDb = pId2->n>0 ? pDb->zDbSName : 0; if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){ goto pragma_out; } @@ -97061,6 +113043,17 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS ** connection. If it returns SQLITE_OK, then assume that the VFS ** handled the pragma and generate a no-op prepared statement. + ** + ** IMPLEMENTATION-OF: R-12238-55120 Whenever a PRAGMA statement is parsed, + ** an SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file + ** object corresponding to the database file to which the pragma + ** statement refers. + ** + ** IMPLEMENTATION-OF: R-29875-31678 The argument to the SQLITE_FCNTL_PRAGMA + ** file control is an array of pointers to strings (char**) in which the + ** second element of the array is the name of the pragma and the third + ** element is the argument to the pragma or NULL if the pragma has no + ** argument. */ aFcntl[0] = 0; aFcntl[1] = zLeft; @@ -97069,14 +113062,10 @@ SQLITE_PRIVATE void sqlite3Pragma( db->busyHandler.nBusy = 0; rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_PRAGMA, (void*)aFcntl); if( rc==SQLITE_OK ){ - if( aFcntl[0] ){ - int mem = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, mem, 0, aFcntl[0], 0); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "result", SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1); - sqlite3_free(aFcntl[0]); - } + sqlite3VdbeSetNumCols(v, 1); + sqlite3VdbeSetColName(v, 0, COLNAME_NAME, aFcntl[0], SQLITE_TRANSIENT); + returnSingleText(v, aFcntl[0]); + sqlite3_free(aFcntl[0]); goto pragma_out; } if( rc!=SQLITE_NOTFOUND ){ @@ -97090,32 +113079,28 @@ SQLITE_PRIVATE void sqlite3Pragma( } /* Locate the pragma in the lookup table */ - lwr = 0; - upr = ArraySize(aPragmaNames)-1; - while( lwr<=upr ){ - mid = (lwr+upr)/2; - rc = sqlite3_stricmp(zLeft, aPragmaNames[mid].zName); - if( rc==0 ) break; - if( rc<0 ){ - upr = mid - 1; - }else{ - lwr = mid + 1; - } - } - if( lwr>upr ) goto pragma_out; + pPragma = pragmaLocate(zLeft); + if( pPragma==0 ) goto pragma_out; /* Make sure the database schema is loaded if the pragma requires that */ - if( (aPragmaNames[mid].mPragFlag & PragFlag_NeedSchema)!=0 ){ + if( (pPragma->mPragFlg & PragFlg_NeedSchema)!=0 ){ if( sqlite3ReadSchema(pParse) ) goto pragma_out; } + /* Register the result column names for pragmas that return results */ + if( (pPragma->mPragFlg & PragFlg_NoColumns)==0 + && ((pPragma->mPragFlg & PragFlg_NoColumns1)==0 || zRight==0) + ){ + setPragmaResultColumnNames(v, pPragma); + } + /* Jump to the appropriate pragma handler */ - switch( aPragmaNames[mid].ePragTyp ){ + switch( pPragma->ePragTyp ){ #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED) /* - ** PRAGMA [database.]default_cache_size - ** PRAGMA [database.]default_cache_size=N + ** PRAGMA [schema.]default_cache_size + ** PRAGMA [schema.]default_cache_size=N ** ** The first form reports the current persistent setting for the ** page cache size. The value returned is the maximum number of @@ -97130,6 +113115,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** size of historical compatibility. */ case PragTyp_DEFAULT_CACHE_SIZE: { + static const int iLn = VDBE_OFFSET_LINENO(2); static const VdbeOpList getCacheSize[] = { { OP_Transaction, 0, 0, 0}, /* 0 */ { OP_ReadCookie, 0, 1, BTREE_DEFAULT_CACHE_SIZE}, /* 1 */ @@ -97141,21 +113127,20 @@ SQLITE_PRIVATE void sqlite3Pragma( { OP_Noop, 0, 0, 0}, { OP_ResultRow, 1, 1, 0}, }; - int addr; + VdbeOp *aOp; sqlite3VdbeUsesBtree(v, iDb); if( !zRight ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", SQLITE_STATIC); pParse->nMem += 2; - addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, iDb); - sqlite3VdbeChangeP1(v, addr+6, SQLITE_DEFAULT_CACHE_SIZE); + sqlite3VdbeVerifyNoMallocRequired(v, ArraySize(getCacheSize)); + aOp = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize, iLn); + if( ONLY_IF_REALLOC_STRESS(aOp==0) ) break; + aOp[0].p1 = iDb; + aOp[1].p1 = iDb; + aOp[6].p1 = SQLITE_DEFAULT_CACHE_SIZE; }else{ int size = sqlite3AbsInt32(sqlite3Atoi(zRight)); sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3VdbeAddOp2(v, OP_Integer, size, 1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, 1); + sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, size); assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); pDb->pSchema->cache_size = size; sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size); @@ -97166,8 +113151,8 @@ SQLITE_PRIVATE void sqlite3Pragma( #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) /* - ** PRAGMA [database.]page_size - ** PRAGMA [database.]page_size=N + ** PRAGMA [schema.]page_size + ** PRAGMA [schema.]page_size=N ** ** The first form reports the current setting for the ** database page size in bytes. The second form sets the @@ -97179,22 +113164,22 @@ SQLITE_PRIVATE void sqlite3Pragma( assert( pBt!=0 ); if( !zRight ){ int size = ALWAYS(pBt) ? sqlite3BtreeGetPageSize(pBt) : 0; - returnSingleInt(pParse, "page_size", size); + returnSingleInt(v, size); }else{ /* Malloc may fail when setting the page-size, as there is an internal ** buffer that the pager module resizes using sqlite3_realloc(). */ db->nextPagesize = sqlite3Atoi(zRight); if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } } break; } /* - ** PRAGMA [database.]secure_delete - ** PRAGMA [database.]secure_delete=ON/OFF + ** PRAGMA [schema.]secure_delete + ** PRAGMA [schema.]secure_delete=ON/OFF ** ** The first form reports the current setting for the ** secure_delete flag. The second form changes the secure_delete @@ -97214,13 +113199,13 @@ SQLITE_PRIVATE void sqlite3Pragma( } } b = sqlite3BtreeSecureDelete(pBt, b); - returnSingleInt(pParse, "secure_delete", b); + returnSingleInt(v, b); break; } /* - ** PRAGMA [database.]max_page_count - ** PRAGMA [database.]max_page_count=N + ** PRAGMA [schema.]max_page_count + ** PRAGMA [schema.]max_page_count=N ** ** The first form reports the current setting for the ** maximum number of pages in the database file. The @@ -97231,7 +113216,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** change. The only purpose is to provide an easy way to test ** the sqlite3AbsInt32() function. ** - ** PRAGMA [database.]page_count + ** PRAGMA [schema.]page_count ** ** Return the number of pages in the specified database. */ @@ -97246,14 +113231,12 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3AbsInt32(sqlite3Atoi(zRight))); } sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT); break; } /* - ** PRAGMA [database.]locking_mode - ** PRAGMA [database.]locking_mode = (normal|exclusive) + ** PRAGMA [schema.]locking_mode + ** PRAGMA [schema.]locking_mode = (normal|exclusive) */ case PragTyp_LOCKING_MODE: { const char *zRet = "normal"; @@ -97293,25 +113276,19 @@ SQLITE_PRIVATE void sqlite3Pragma( if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){ zRet = "exclusive"; } - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zRet, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); + returnSingleText(v, zRet); break; } /* - ** PRAGMA [database.]journal_mode - ** PRAGMA [database.]journal_mode = + ** PRAGMA [schema.]journal_mode + ** PRAGMA [schema.]journal_mode = ** (delete|persist|off|truncate|memory|wal|off) */ case PragTyp_JOURNAL_MODE: { int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */ int ii; /* Loop counter */ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "journal_mode", SQLITE_STATIC); - if( zRight==0 ){ /* If there is no "=MODE" part of the pragma, do a query for the ** current mode */ @@ -97344,8 +113321,8 @@ SQLITE_PRIVATE void sqlite3Pragma( } /* - ** PRAGMA [database.]journal_size_limit - ** PRAGMA [database.]journal_size_limit=N + ** PRAGMA [schema.]journal_size_limit + ** PRAGMA [schema.]journal_size_limit=N ** ** Get or set the size limit on rollback journal files. */ @@ -97353,19 +113330,19 @@ SQLITE_PRIVATE void sqlite3Pragma( Pager *pPager = sqlite3BtreePager(pDb->pBt); i64 iLimit = -2; if( zRight ){ - sqlite3Atoi64(zRight, &iLimit, sqlite3Strlen30(zRight), SQLITE_UTF8); + sqlite3DecOrHexToI64(zRight, &iLimit); if( iLimit<-1 ) iLimit = -1; } iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit); - returnSingleInt(pParse, "journal_size_limit", iLimit); + returnSingleInt(v, iLimit); break; } #endif /* SQLITE_OMIT_PAGER_PRAGMAS */ /* - ** PRAGMA [database.]auto_vacuum - ** PRAGMA [database.]auto_vacuum=N + ** PRAGMA [schema.]auto_vacuum + ** PRAGMA [schema.]auto_vacuum=N ** ** Get or set the value of the database 'auto-vacuum' parameter. ** The value is one of: 0 NONE 1 FULL 2 INCREMENTAL @@ -97375,7 +113352,7 @@ SQLITE_PRIVATE void sqlite3Pragma( Btree *pBt = pDb->pBt; assert( pBt!=0 ); if( !zRight ){ - returnSingleInt(pParse, "auto_vacuum", sqlite3BtreeGetAutoVacuum(pBt)); + returnSingleInt(v, sqlite3BtreeGetAutoVacuum(pBt)); }else{ int eAuto = getAutoVacuum(zRight); assert( eAuto>=0 && eAuto<=2 ); @@ -97392,21 +113369,24 @@ SQLITE_PRIVATE void sqlite3Pragma( ** file. Before writing to meta[6], check that meta[3] indicates ** that this really is an auto-vacuum capable database. */ + static const int iLn = VDBE_OFFSET_LINENO(2); static const VdbeOpList setMeta6[] = { { OP_Transaction, 0, 1, 0}, /* 0 */ { OP_ReadCookie, 0, 1, BTREE_LARGEST_ROOT_PAGE}, { OP_If, 1, 0, 0}, /* 2 */ { OP_Halt, SQLITE_OK, OE_Abort, 0}, /* 3 */ - { OP_Integer, 0, 1, 0}, /* 4 */ - { OP_SetCookie, 0, BTREE_INCR_VACUUM, 1}, /* 5 */ + { OP_SetCookie, 0, BTREE_INCR_VACUUM, 0}, /* 4 */ }; - int iAddr; - iAddr = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6); - sqlite3VdbeChangeP1(v, iAddr, iDb); - sqlite3VdbeChangeP1(v, iAddr+1, iDb); - sqlite3VdbeChangeP2(v, iAddr+2, iAddr+4); - sqlite3VdbeChangeP1(v, iAddr+4, eAuto-1); - sqlite3VdbeChangeP1(v, iAddr+5, iDb); + VdbeOp *aOp; + int iAddr = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeVerifyNoMallocRequired(v, ArraySize(setMeta6)); + aOp = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6, iLn); + if( ONLY_IF_REALLOC_STRESS(aOp==0) ) break; + aOp[0].p1 = iDb; + aOp[1].p1 = iDb; + aOp[2].p2 = iAddr+4; + aOp[4].p1 = iDb; + aOp[4].p3 = eAuto - 1; sqlite3VdbeUsesBtree(v, iDb); } } @@ -97415,7 +113395,7 @@ SQLITE_PRIVATE void sqlite3Pragma( #endif /* - ** PRAGMA [database.]incremental_vacuum(N) + ** PRAGMA [schema.]incremental_vacuum(N) ** ** Do N steps of incremental vacuuming on a database. */ @@ -97427,10 +113407,10 @@ SQLITE_PRIVATE void sqlite3Pragma( } sqlite3BeginWriteOperation(pParse, 0, iDb); sqlite3VdbeAddOp2(v, OP_Integer, iLimit, 1); - addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb); + addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb); VdbeCoverage(v); sqlite3VdbeAddOp1(v, OP_ResultRow, 1); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); - sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr); + sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addr); break; } @@ -97438,8 +113418,8 @@ SQLITE_PRIVATE void sqlite3Pragma( #ifndef SQLITE_OMIT_PAGER_PRAGMAS /* - ** PRAGMA [database.]cache_size - ** PRAGMA [database.]cache_size=N + ** PRAGMA [schema.]cache_size + ** PRAGMA [schema.]cache_size=N ** ** The first form reports the current local setting for the ** page cache size. The second form sets the local @@ -97451,7 +113431,7 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_CACHE_SIZE: { assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( !zRight ){ - returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size); + returnSingleInt(v, pDb->pSchema->cache_size); }else{ int size = sqlite3Atoi(zRight); pDb->pSchema->cache_size = size; @@ -97461,7 +113441,50 @@ SQLITE_PRIVATE void sqlite3Pragma( } /* - ** PRAGMA [database.]mmap_size(N) + ** PRAGMA [schema.]cache_spill + ** PRAGMA cache_spill=BOOLEAN + ** PRAGMA [schema.]cache_spill=N + ** + ** The first form reports the current local setting for the + ** page cache spill size. The second form turns cache spill on + ** or off. When turnning cache spill on, the size is set to the + ** current cache_size. The third form sets a spill size that + ** may be different form the cache size. + ** If N is positive then that is the + ** number of pages in the cache. If N is negative, then the + ** number of pages is adjusted so that the cache uses -N kibibytes + ** of memory. + ** + ** If the number of cache_spill pages is less then the number of + ** cache_size pages, no spilling occurs until the page count exceeds + ** the number of cache_size pages. + ** + ** The cache_spill=BOOLEAN setting applies to all attached schemas, + ** not just the schema specified. + */ + case PragTyp_CACHE_SPILL: { + assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); + if( !zRight ){ + returnSingleInt(v, + (db->flags & SQLITE_CacheSpill)==0 ? 0 : + sqlite3BtreeSetSpillSize(pDb->pBt,0)); + }else{ + int size = 1; + if( sqlite3GetInt32(zRight, &size) ){ + sqlite3BtreeSetSpillSize(pDb->pBt, size); + } + if( sqlite3GetBoolean(zRight, size!=0) ){ + db->flags |= SQLITE_CacheSpill; + }else{ + db->flags &= ~SQLITE_CacheSpill; + } + setAllPagerFlags(db); + } + break; + } + + /* + ** PRAGMA [schema.]mmap_size(N) ** ** Used to set mapping size limit. The mapping size limit is ** used to limit the aggregate size of all memory mapped regions of the @@ -97480,7 +113503,7 @@ SQLITE_PRIVATE void sqlite3Pragma( assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( zRight ){ int ii; - sqlite3Atoi64(zRight, &sz, sqlite3Strlen30(zRight), SQLITE_UTF8); + sqlite3DecOrHexToI64(zRight, &sz); if( sz<0 ) sz = sqlite3GlobalConfig.szMmap; if( pId2->n==0 ) db->szMmap = sz; for(ii=db->nDb-1; ii>=0; ii--){ @@ -97496,7 +113519,7 @@ SQLITE_PRIVATE void sqlite3Pragma( rc = SQLITE_OK; #endif if( rc==SQLITE_OK ){ - returnSingleInt(pParse, "mmap_size", sz); + returnSingleInt(v, sz); }else if( rc!=SQLITE_NOTFOUND ){ pParse->nErr++; pParse->rc = rc; @@ -97517,7 +113540,7 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_TEMP_STORE: { if( !zRight ){ - returnSingleInt(pParse, "temp_store", db->temp_store); + returnSingleInt(v, db->temp_store); }else{ changeTempStorage(pParse, zRight); } @@ -97536,13 +113559,7 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_TEMP_STORE_DIRECTORY: { if( !zRight ){ - if( sqlite3_temp_directory ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "temp_store_directory", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_temp_directory, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, sqlite3_temp_directory); }else{ #ifndef SQLITE_OMIT_WSD if( zRight[0] ){ @@ -97586,13 +113603,7 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_DATA_STORE_DIRECTORY: { if( !zRight ){ - if( sqlite3_data_directory ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "data_store_directory", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_data_directory, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, sqlite3_data_directory); }else{ #ifndef SQLITE_OMIT_WSD if( zRight[0] ){ @@ -97617,8 +113628,8 @@ SQLITE_PRIVATE void sqlite3Pragma( #if SQLITE_ENABLE_LOCKING_STYLE /* - ** PRAGMA [database.]lock_proxy_file - ** PRAGMA [database.]lock_proxy_file = ":auto:"|"lock_file_path" + ** PRAGMA [schema.]lock_proxy_file + ** PRAGMA [schema.]lock_proxy_file = ":auto:"|"lock_file_path" ** ** Return or set the value of the lock_proxy_file flag. Changing ** the value sets a specific file to be used for database access locks. @@ -97631,14 +113642,7 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3_file *pFile = sqlite3PagerFile(pPager); sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE, &proxy_file_path); - - if( proxy_file_path ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "lock_proxy_file", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, proxy_file_path, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, proxy_file_path); }else{ Pager *pPager = sqlite3BtreePager(pDb->pBt); sqlite3_file *pFile = sqlite3PagerFile(pPager); @@ -97660,8 +113664,8 @@ SQLITE_PRIVATE void sqlite3Pragma( #endif /* SQLITE_ENABLE_LOCKING_STYLE */ /* - ** PRAGMA [database.]synchronous - ** PRAGMA [database.]synchronous=OFF|ON|NORMAL|FULL + ** PRAGMA [schema.]synchronous + ** PRAGMA [schema.]synchronous=OFF|ON|NORMAL|FULL|EXTRA ** ** Return or set the local value of the synchronous flag. Changing ** the local value does not make changes to the disk file and the @@ -97670,13 +113674,16 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_SYNCHRONOUS: { if( !zRight ){ - returnSingleInt(pParse, "synchronous", pDb->safety_level-1); + returnSingleInt(v, pDb->safety_level-1); }else{ if( !db->autoCommit ){ sqlite3ErrorMsg(pParse, "Safety level may not be changed inside a transaction"); }else{ - pDb->safety_level = getSafetyLevel(zRight,0,1)+1; + int iLevel = (getSafetyLevel(zRight,0,1)+1) & PAGER_SYNCHRONOUS_MASK; + if( iLevel==0 ) iLevel = 1; + pDb->safety_level = iLevel; + pDb->bSyncSet = 1; setAllPagerFlags(db); } } @@ -97687,15 +113694,21 @@ SQLITE_PRIVATE void sqlite3Pragma( #ifndef SQLITE_OMIT_FLAG_PRAGMAS case PragTyp_FLAG: { if( zRight==0 ){ - returnSingleInt(pParse, aPragmaNames[mid].zName, - (db->flags & aPragmaNames[mid].iArg)!=0 ); + setPragmaResultColumnNames(v, pPragma); + returnSingleInt(v, (db->flags & pPragma->iArg)!=0 ); }else{ - int mask = aPragmaNames[mid].iArg; /* Mask of bits to set or clear. */ + int mask = pPragma->iArg; /* Mask of bits to set or clear. */ if( db->autoCommit==0 ){ /* Foreign key support may not be enabled or disabled while not ** in auto-commit mode. */ mask &= ~(SQLITE_ForeignKeys); } +#if SQLITE_USER_AUTHENTICATION + if( db->auth.authLevel==UAUTH_User ){ + /* Do not allow non-admin users to modify the schema arbitrarily */ + mask &= ~(SQLITE_WriteSchema); + } +#endif if( sqlite3GetBoolean(zRight, 0) ){ db->flags |= mask; @@ -97708,7 +113721,7 @@ SQLITE_PRIVATE void sqlite3Pragma( ** compiler (eg. count_changes). So add an opcode to expire all ** compiled SQL statements after modifying a pragma value. */ - sqlite3VdbeAddOp2(v, OP_Expire, 0, 0); + sqlite3VdbeAddOp0(v, OP_Expire); setAllPagerFlags(db); } break; @@ -97730,45 +113743,35 @@ SQLITE_PRIVATE void sqlite3Pragma( */ case PragTyp_TABLE_INFO: if( zRight ){ Table *pTab; - pTab = sqlite3FindTable(db, zRight, zDb); + pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb); if( pTab ){ int i, k; int nHidden = 0; Column *pCol; Index *pPk = sqlite3PrimaryKeyIndex(pTab); - sqlite3VdbeSetNumCols(v, 6); pParse->nMem = 6; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", SQLITE_STATIC); sqlite3ViewGetColumnNames(pParse, pTab); for(i=0, pCol=pTab->aCol; inCol; i++, pCol++){ if( IsHiddenColumn(pCol) ){ nHidden++; continue; } - sqlite3VdbeAddOp2(v, OP_Integer, i-nHidden, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pCol->zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - pCol->zType ? pCol->zType : "", 0); - sqlite3VdbeAddOp2(v, OP_Integer, (pCol->notNull ? 1 : 0), 4); - if( pCol->zDflt ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, (char*)pCol->zDflt, 0); - }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, 5); - } if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){ k = 0; }else if( pPk==0 ){ k = 1; }else{ - for(k=1; ALWAYS(k<=pTab->nCol) && pPk->aiColumn[k-1]!=i; k++){} + for(k=1; k<=pTab->nCol && pPk->aiColumn[k-1]!=i; k++){} } - sqlite3VdbeAddOp2(v, OP_Integer, k, 6); + assert( pCol->pDflt==0 || pCol->pDflt->op==TK_SPAN ); + sqlite3VdbeMultiLoad(v, 1, "issisi", + i-nHidden, + pCol->zName, + sqlite3ColumnType(pCol,""), + pCol->notNull ? 1 : 0, + pCol->pDflt ? pCol->pDflt->u.zToken : 0, + k); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6); } } @@ -97778,27 +113781,21 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_STATS: { Index *pIdx; HashElem *i; - v = sqlite3GetVdbe(pParse); - sqlite3VdbeSetNumCols(v, 4); pParse->nMem = 4; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "index", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "width", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "height", SQLITE_STATIC); for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, pTab->zName, 0); - sqlite3VdbeAddOp2(v, OP_Null, 0, 2); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pTab->szTabRow), 3); - sqlite3VdbeAddOp2(v, OP_Integer, (int)pTab->nRowEst, 4); + sqlite3VdbeMultiLoad(v, 1, "ssii", + pTab->zName, + 0, + pTab->szTabRow, + pTab->nRowLogEst); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pIdx->szIdxRow), 3); - sqlite3VdbeAddOp2(v, OP_Integer, (int)pIdx->aiRowEst[0], 4); + sqlite3VdbeMultiLoad(v, 2, "sii", + pIdx->zName, + pIdx->szIdxRow, + pIdx->aiRowLogEst[0]); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); } } @@ -97811,20 +113808,30 @@ SQLITE_PRIVATE void sqlite3Pragma( pIdx = sqlite3FindIndex(db, zRight, zDb); if( pIdx ){ int i; + int mx; + if( pPragma->iArg ){ + /* PRAGMA index_xinfo (newer version with more rows and columns) */ + mx = pIdx->nColumn; + pParse->nMem = 6; + }else{ + /* PRAGMA index_info (legacy version) */ + mx = pIdx->nKeyCol; + pParse->nMem = 3; + } pTab = pIdx->pTable; - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC); - for(i=0; inKeyCol; i++){ + assert( pParse->nMem<=pPragma->nPragCName ); + for(i=0; iaiColumn[i]; - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2); - assert( pTab->nCol>cnum ); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); + sqlite3VdbeMultiLoad(v, 1, "iis", i, cnum, + cnum<0 ? 0 : pTab->aCol[cnum].zName); + if( pPragma->iArg ){ + sqlite3VdbeMultiLoad(v, 4, "isi", + pIdx->aSortOrder[i], + pIdx->azColl[i], + inKeyCol); + } + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, pParse->nMem); } } } @@ -97836,18 +113843,17 @@ SQLITE_PRIVATE void sqlite3Pragma( int i; pTab = sqlite3FindTable(db, zRight, zDb); if( pTab ){ - v = sqlite3GetVdbe(pParse); - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; + pParse->nMem = 5; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC); for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){ - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0); - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->onError!=OE_None, 3); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); + const char *azOrigin[] = { "c", "u", "pk" }; + sqlite3VdbeMultiLoad(v, 1, "isisi", + i, + pIdx->zName, + IsUniqueIndex(pIdx), + azOrigin[pIdx->idxType], + pIdx->pPartIdxWhere!=0); + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 5); } } } @@ -97855,18 +113861,14 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_DATABASE_LIST: { int i; - sqlite3VdbeSetNumCols(v, 3); pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", SQLITE_STATIC); for(i=0; inDb; i++){ if( db->aDb[i].pBt==0 ) continue; - assert( db->aDb[i].zName!=0 ); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, db->aDb[i].zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - sqlite3BtreeGetFilename(db->aDb[i].pBt), 0); + assert( db->aDb[i].zDbSName!=0 ); + sqlite3VdbeMultiLoad(v, 1, "iss", + i, + db->aDb[i].zDbSName, + sqlite3BtreeGetFilename(db->aDb[i].pBt)); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); } } @@ -97875,14 +113877,10 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_COLLATION_LIST: { int i = 0; HashElem *p; - sqlite3VdbeSetNumCols(v, 2); pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){ CollSeq *pColl = (CollSeq *)sqliteHashData(p); - sqlite3VdbeAddOp2(v, OP_Integer, i++, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pColl->zName, 0); + sqlite3VdbeMultiLoad(v, 1, "is", i++, pColl->zName); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); } } @@ -97895,36 +113893,23 @@ SQLITE_PRIVATE void sqlite3Pragma( Table *pTab; pTab = sqlite3FindTable(db, zRight, zDb); if( pTab ){ - v = sqlite3GetVdbe(pParse); pFK = pTab->pFKey; if( pFK ){ int i = 0; - sqlite3VdbeSetNumCols(v, 8); pParse->nMem = 8; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "on_update", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 6, COLNAME_NAME, "on_delete", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 7, COLNAME_NAME, "match", SQLITE_STATIC); while(pFK){ int j; for(j=0; jnCol; j++){ - char *zCol = pFK->aCol[j].zCol; - char *zOnDelete = (char *)actionName(pFK->aAction[0]); - char *zOnUpdate = (char *)actionName(pFK->aAction[1]); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, j, 2); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pFK->zTo, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, - pTab->aCol[pFK->aCol[j].iFrom].zName, 0); - sqlite3VdbeAddOp4(v, zCol ? OP_String8 : OP_Null, 0, 5, 0, zCol, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 6, 0, zOnUpdate, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 7, 0, zOnDelete, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 8, 0, "NONE", 0); + sqlite3VdbeMultiLoad(v, 1, "iissssss", + i, + j, + pFK->zTo, + pTab->aCol[pFK->aCol[j].iFrom].zName, + pFK->aCol[j].zCol, + actionName(pFK->aAction[1]), /* ON UPDATE */ + actionName(pFK->aAction[0]), /* ON DELETE */ + "NONE"); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 8); } ++i; @@ -97958,12 +113943,6 @@ SQLITE_PRIVATE void sqlite3Pragma( pParse->nMem += 4; regKey = ++pParse->nMem; regRow = ++pParse->nMem; - v = sqlite3GetVdbe(pParse); - sqlite3VdbeSetNumCols(v, 4); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "rowid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "parent", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "fkid", SQLITE_STATIC); sqlite3CodeVerifySchema(pParse, iDb); k = sqliteHashFirst(&db->aDb[iDb].pSchema->tblHash); while( k ){ @@ -97978,8 +113957,7 @@ SQLITE_PRIVATE void sqlite3Pragma( sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); if( pTab->nCol+regRow>pParse->nMem ) pParse->nMem = pTab->nCol + regRow; sqlite3OpenTable(pParse, 0, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp4(v, OP_String8, 0, regResult, 0, pTab->zName, - P4_TRANSIENT); + sqlite3VdbeLoadString(v, regResult, pTab->zName); for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){ pParent = sqlite3FindTable(db, pFK->zTo, zDb); if( pParent==0 ) continue; @@ -98001,7 +113979,7 @@ SQLITE_PRIVATE void sqlite3Pragma( assert( pParse->nErr>0 || pFK==0 ); if( pFK ) break; if( pParse->nTabnTab = i; - addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, 0); + addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, 0); VdbeCoverage(v); for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){ pParent = sqlite3FindTable(db, pFK->zTo, zDb); pIdx = 0; @@ -98017,37 +113995,33 @@ SQLITE_PRIVATE void sqlite3Pragma( if( iKey!=pTab->iPKey ){ sqlite3VdbeAddOp3(v, OP_Column, 0, iKey, regRow); sqlite3ColumnDefault(v, pTab, iKey, regRow); - sqlite3VdbeAddOp2(v, OP_IsNull, regRow, addrOk); - sqlite3VdbeAddOp2(v, OP_MustBeInt, regRow, - sqlite3VdbeCurrentAddr(v)+3); + sqlite3VdbeAddOp2(v, OP_IsNull, regRow, addrOk); VdbeCoverage(v); }else{ sqlite3VdbeAddOp2(v, OP_Rowid, 0, regRow); } - sqlite3VdbeAddOp3(v, OP_NotExists, i, 0, regRow); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrOk); + sqlite3VdbeAddOp3(v, OP_SeekRowid, i, 0, regRow); VdbeCoverage(v); + sqlite3VdbeGoto(v, addrOk); sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); }else{ for(j=0; jnCol; j++){ sqlite3ExprCodeGetColumnOfTable(v, pTab, 0, aiCols ? aiCols[j] : pFK->aCol[j].iFrom, regRow+j); - sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); + sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v); } if( pParent ){ - sqlite3VdbeAddOp3(v, OP_MakeRecord, regRow, pFK->nCol, regKey); - sqlite3VdbeChangeP4(v, -1, - sqlite3IndexAffinityStr(v,pIdx), P4_TRANSIENT); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey, + sqlite3IndexAffinityStr(db,pIdx), pFK->nCol); sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0); + VdbeCoverage(v); } } sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1); - sqlite3VdbeAddOp4(v, OP_String8, 0, regResult+2, 0, - pFK->zTo, P4_TRANSIENT); - sqlite3VdbeAddOp2(v, OP_Integer, i-1, regResult+3); + sqlite3VdbeMultiLoad(v, regResult+2, "si", pFK->zTo, i-1); sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, 4); sqlite3VdbeResolveLabel(v, addrOk); sqlite3DbFree(db, aiCols); } - sqlite3VdbeAddOp2(v, OP_Next, 0, addrTop+1); + sqlite3VdbeAddOp2(v, OP_Next, 0, addrTop+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addrTop); } } @@ -98059,7 +114033,7 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_PARSER_TRACE: { if( zRight ){ if( sqlite3GetBoolean(zRight, 0) ){ - sqlite3ParserTrace(stderr, "parser: "); + sqlite3ParserTrace(stdout, "parser: "); }else{ sqlite3ParserTrace(0, 0); } @@ -98090,17 +114064,6 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_INTEGRITY_CHECK: { int i, j, addr, mxErr; - /* Code that appears at the end of the integrity check. If no error - ** messages have been generated, output OK. Otherwise output the - ** error message - */ - static const VdbeOpList endCode[] = { - { OP_AddImm, 1, 0, 0}, /* 0 */ - { OP_IfNeg, 1, 0, 0}, /* 1 */ - { OP_String8, 0, 3, 0}, /* 2 */ - { OP_ResultRow, 3, 1, 0}, - }; - int isQuick = (sqlite3Tolower(zLeft[0])=='q'); /* If the PRAGMA command was of the form "PRAGMA .integrity_check", @@ -98118,8 +114081,6 @@ SQLITE_PRIVATE void sqlite3Pragma( /* Initialize the VDBE program */ pParse->nMem = 6; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", SQLITE_STATIC); /* Set the maximum error count */ mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; @@ -98135,49 +114096,57 @@ SQLITE_PRIVATE void sqlite3Pragma( for(i=0; inDb; i++){ HashElem *x; Hash *pTbls; + int *aRoot; int cnt = 0; + int mxIdx = 0; + int nIdx; if( OMIT_TEMPDB && i==1 ) continue; if( iDb>=0 && i!=iDb ) continue; sqlite3CodeVerifySchema(pParse, i); addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Halt if out of errors */ + VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); sqlite3VdbeJumpHere(v, addr); /* Do an integrity check of the B-Tree ** - ** Begin by filling registers 2, 3, ... with the root pages numbers + ** Begin by finding the root pages numbers ** for all tables and indices in the database. */ assert( sqlite3SchemaMutexHeld(db, i, 0) ); pTbls = &db->aDb[i].pSchema->tblHash; - for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ + for(cnt=0, x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ Table *pTab = sqliteHashData(x); Index *pIdx; - if( HasRowid(pTab) ){ - sqlite3VdbeAddOp2(v, OP_Integer, pTab->tnum, 2+cnt); - VdbeComment((v, "%s", pTab->zName)); - cnt++; - } + if( HasRowid(pTab) ) cnt++; + for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){ cnt++; } + if( nIdx>mxIdx ) mxIdx = nIdx; + } + aRoot = sqlite3DbMallocRawNN(db, sizeof(int)*(cnt+1)); + if( aRoot==0 ) break; + for(cnt=0, x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ + Table *pTab = sqliteHashData(x); + Index *pIdx; + if( HasRowid(pTab) ) aRoot[cnt++] = pTab->tnum; for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->tnum, 2+cnt); - VdbeComment((v, "%s", pIdx->zName)); - cnt++; + aRoot[cnt++] = pIdx->tnum; } } + aRoot[cnt] = 0; /* Make sure sufficient number of registers have been allocated */ - pParse->nMem = MAX( pParse->nMem, cnt+8 ); + pParse->nMem = MAX( pParse->nMem, 8+mxIdx ); /* Do the b-tree integrity checks */ - sqlite3VdbeAddOp3(v, OP_IntegrityCk, 2, cnt, 1); + sqlite3VdbeAddOp4(v, OP_IntegrityCk, 2, cnt, 1, (char*)aRoot,P4_INTARRAY); sqlite3VdbeChangeP5(v, (u8)i); - addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); + addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); VdbeCoverage(v); sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName), + sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zDbSName), P4_DYNAMIC); - sqlite3VdbeAddOp2(v, OP_Move, 2, 4); + sqlite3VdbeAddOp3(v, OP_Move, 2, 4, 1); sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 2); sqlite3VdbeAddOp2(v, OP_ResultRow, 2, 1); sqlite3VdbeJumpHere(v, addr); @@ -98195,66 +114164,126 @@ SQLITE_PRIVATE void sqlite3Pragma( if( pTab->pIndex==0 ) continue; pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab); addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Stop if out of errors */ + VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); sqlite3VdbeJumpHere(v, addr); sqlite3ExprCacheClear(pParse); - sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead, + sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead, 0, 1, 0, &iDataCur, &iIdxCur); sqlite3VdbeAddOp2(v, OP_Integer, 0, 7); for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ sqlite3VdbeAddOp2(v, OP_Integer, 0, 8+j); /* index entries counter */ } - pParse->nMem = MAX(pParse->nMem, 8+j); - sqlite3VdbeAddOp2(v, OP_Rewind, iDataCur, 0); + assert( pParse->nMem>=8+j ); + assert( sqlite3NoTempsInRange(pParse,1,7+j) ); + sqlite3VdbeAddOp2(v, OP_Rewind, iDataCur, 0); VdbeCoverage(v); loopTop = sqlite3VdbeAddOp2(v, OP_AddImm, 7, 1); + /* Verify that all NOT NULL columns really are NOT NULL */ + for(j=0; jnCol; j++){ + char *zErr; + int jmp2, jmp3; + if( j==pTab->iPKey ) continue; + if( pTab->aCol[j].notNull==0 ) continue; + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3); + sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); + jmp2 = sqlite3VdbeAddOp1(v, OP_NotNull, 3); VdbeCoverage(v); + sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */ + zErr = sqlite3MPrintf(db, "NULL value in %s.%s", pTab->zName, + pTab->aCol[j].zName); + sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC); + sqlite3VdbeAddOp2(v, OP_ResultRow, 3, 1); + jmp3 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); VdbeCoverage(v); + sqlite3VdbeAddOp0(v, OP_Halt); + sqlite3VdbeJumpHere(v, jmp2); + sqlite3VdbeJumpHere(v, jmp3); + } + /* Validate index entries for the current row */ for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ - int jmp2, jmp3, jmp4; + int jmp2, jmp3, jmp4, jmp5; + int ckUniq = sqlite3VdbeMakeLabel(v); if( pPk==pIdx ) continue; r1 = sqlite3GenerateIndexKey(pParse, pIdx, iDataCur, 0, 0, &jmp3, pPrior, r1); pPrior = pIdx; sqlite3VdbeAddOp2(v, OP_AddImm, 8+j, 1); /* increment entry count */ - jmp2 = sqlite3VdbeAddOp4Int(v, OP_Found, iIdxCur+j, 0, r1, - pIdx->nColumn); + /* Verify that an index entry exists for the current table row */ + jmp2 = sqlite3VdbeAddOp4Int(v, OP_Found, iIdxCur+j, ckUniq, r1, + pIdx->nColumn); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */ - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, "row ", P4_STATIC); + sqlite3VdbeLoadString(v, 3, "row "); sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, " missing from index ", - P4_STATIC); + sqlite3VdbeLoadString(v, 4, " missing from index "); sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, pIdx->zName, P4_TRANSIENT); + jmp5 = sqlite3VdbeLoadString(v, 4, pIdx->zName); sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3); sqlite3VdbeAddOp2(v, OP_ResultRow, 3, 1); - jmp4 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); + jmp4 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); VdbeCoverage(v); sqlite3VdbeAddOp0(v, OP_Halt); - sqlite3VdbeJumpHere(v, jmp4); sqlite3VdbeJumpHere(v, jmp2); - sqlite3VdbeResolveLabel(v, jmp3); + /* For UNIQUE indexes, verify that only one entry exists with the + ** current key. The entry is unique if (1) any column is NULL + ** or (2) the next entry has a different key */ + if( IsUniqueIndex(pIdx) ){ + int uniqOk = sqlite3VdbeMakeLabel(v); + int jmp6; + int kk; + for(kk=0; kknKeyCol; kk++){ + int iCol = pIdx->aiColumn[kk]; + assert( iCol!=XN_ROWID && iColnCol ); + if( iCol>=0 && pTab->aCol[iCol].notNull ) continue; + sqlite3VdbeAddOp2(v, OP_IsNull, r1+kk, uniqOk); + VdbeCoverage(v); + } + jmp6 = sqlite3VdbeAddOp1(v, OP_Next, iIdxCur+j); VdbeCoverage(v); + sqlite3VdbeGoto(v, uniqOk); + sqlite3VdbeJumpHere(v, jmp6); + sqlite3VdbeAddOp4Int(v, OP_IdxGT, iIdxCur+j, uniqOk, r1, + pIdx->nKeyCol); VdbeCoverage(v); + sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */ + sqlite3VdbeLoadString(v, 3, "non-unique entry in index "); + sqlite3VdbeGoto(v, jmp5); + sqlite3VdbeResolveLabel(v, uniqOk); + } + sqlite3VdbeJumpHere(v, jmp4); + sqlite3ResolvePartIdxLabel(pParse, jmp3); } - sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); + sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); VdbeCoverage(v); sqlite3VdbeJumpHere(v, loopTop-1); #ifndef SQLITE_OMIT_BTREECOUNT - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, - "wrong # of entries in index ", P4_STATIC); + sqlite3VdbeLoadString(v, 2, "wrong # of entries in index "); for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ if( pPk==pIdx ) continue; addr = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr+2); + sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr+2); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); sqlite3VdbeAddOp2(v, OP_Count, iIdxCur+j, 3); - sqlite3VdbeAddOp3(v, OP_Eq, 8+j, addr+8, 3); + sqlite3VdbeAddOp3(v, OP_Eq, 8+j, addr+8, 3); VdbeCoverage(v); + sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pIdx->zName, P4_TRANSIENT); + sqlite3VdbeLoadString(v, 3, pIdx->zName); sqlite3VdbeAddOp3(v, OP_Concat, 3, 2, 7); sqlite3VdbeAddOp2(v, OP_ResultRow, 7, 1); } #endif /* SQLITE_OMIT_BTREECOUNT */ } } - addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode); - sqlite3VdbeChangeP2(v, addr, -mxErr); - sqlite3VdbeJumpHere(v, addr+1); - sqlite3VdbeChangeP4(v, addr+2, "ok", P4_STATIC); + { + static const int iLn = VDBE_OFFSET_LINENO(2); + static const VdbeOpList endCode[] = { + { OP_AddImm, 1, 0, 0}, /* 0 */ + { OP_If, 1, 4, 0}, /* 1 */ + { OP_String8, 0, 3, 0}, /* 2 */ + { OP_ResultRow, 3, 1, 0}, /* 3 */ + }; + VdbeOp *aOp; + + aOp = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode, iLn); + if( aOp ){ + aOp[0].p2 = -mxErr; + aOp[2].p4type = P4_STATIC; + aOp[2].p4.z = "ok"; + } + } } break; #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ @@ -98300,14 +114329,10 @@ SQLITE_PRIVATE void sqlite3Pragma( const struct EncName *pEnc; if( !zRight ){ /* "PRAGMA encoding" */ if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_String8, 0, 1); assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 ); assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE ); assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE ); - sqlite3VdbeChangeP4(v, -1, encnames[ENC(pParse->db)].zName, P4_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); + returnSingleText(v, encnames[ENC(pParse->db)].zName); }else{ /* "PRAGMA encoding = XXX" */ /* Only change the value of sqlite.enc if the database handle is not ** initialized. If the main database exists, the new sqlite.enc value @@ -98320,7 +114345,8 @@ SQLITE_PRIVATE void sqlite3Pragma( ){ for(pEnc=&encnames[0]; pEnc->zName; pEnc++){ if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){ - ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE; + SCHEMA_ENC(db) = ENC(db) = + pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE; break; } } @@ -98335,16 +114361,18 @@ SQLITE_PRIVATE void sqlite3Pragma( #ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS /* - ** PRAGMA [database.]schema_version - ** PRAGMA [database.]schema_version = + ** PRAGMA [schema.]schema_version + ** PRAGMA [schema.]schema_version = ** - ** PRAGMA [database.]user_version - ** PRAGMA [database.]user_version = + ** PRAGMA [schema.]user_version + ** PRAGMA [schema.]user_version = ** - ** PRAGMA [database.]freelist_count = + ** PRAGMA [schema.]freelist_count ** - ** PRAGMA [database.]application_id - ** PRAGMA [database.]application_id = + ** PRAGMA [schema.]data_version + ** + ** PRAGMA [schema.]application_id + ** PRAGMA [schema.]application_id = ** ** The pragma's schema_version and user_version are used to set or get ** the value of the schema-version and user-version, respectively. Both @@ -98365,35 +114393,22 @@ SQLITE_PRIVATE void sqlite3Pragma( ** applications for any purpose. */ case PragTyp_HEADER_VALUE: { - int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */ + int iCookie = pPragma->iArg; /* Which cookie to read or write */ sqlite3VdbeUsesBtree(v, iDb); - switch( zLeft[0] ){ - case 'a': case 'A': - iCookie = BTREE_APPLICATION_ID; - break; - case 'f': case 'F': - iCookie = BTREE_FREE_PAGE_COUNT; - break; - case 's': case 'S': - iCookie = BTREE_SCHEMA_VERSION; - break; - default: - iCookie = BTREE_USER_VERSION; - break; - } - - if( zRight && iCookie!=BTREE_FREE_PAGE_COUNT ){ + if( zRight && (pPragma->mPragFlg & PragFlg_ReadOnly)==0 ){ /* Write the specified cookie value */ static const VdbeOpList setCookie[] = { { OP_Transaction, 0, 1, 0}, /* 0 */ - { OP_Integer, 0, 1, 0}, /* 1 */ - { OP_SetCookie, 0, 0, 1}, /* 2 */ + { OP_SetCookie, 0, 0, 0}, /* 1 */ }; - int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, sqlite3Atoi(zRight)); - sqlite3VdbeChangeP1(v, addr+2, iDb); - sqlite3VdbeChangeP2(v, addr+2, iCookie); + VdbeOp *aOp; + sqlite3VdbeVerifyNoMallocRequired(v, ArraySize(setCookie)); + aOp = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie, 0); + if( ONLY_IF_REALLOC_STRESS(aOp==0) ) break; + aOp[0].p1 = iDb; + aOp[1].p1 = iDb; + aOp[1].p2 = iCookie; + aOp[1].p3 = sqlite3Atoi(zRight); }else{ /* Read the specified cookie value */ static const VdbeOpList readCookie[] = { @@ -98401,12 +114416,14 @@ SQLITE_PRIVATE void sqlite3Pragma( { OP_ReadCookie, 0, 1, 0}, /* 1 */ { OP_ResultRow, 1, 1, 0} }; - int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, iDb); - sqlite3VdbeChangeP3(v, addr+1, iCookie); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT); + VdbeOp *aOp; + sqlite3VdbeVerifyNoMallocRequired(v, ArraySize(readCookie)); + aOp = sqlite3VdbeAddOpList(v, ArraySize(readCookie),readCookie,0); + if( ONLY_IF_REALLOC_STRESS(aOp==0) ) break; + aOp[0].p1 = iDb; + aOp[1].p1 = iDb; + aOp[1].p3 = iCookie; + sqlite3VdbeReusable(v); } } break; @@ -98422,20 +114439,19 @@ SQLITE_PRIVATE void sqlite3Pragma( case PragTyp_COMPILE_OPTIONS: { int i = 0; const char *zOpt; - sqlite3VdbeSetNumCols(v, 1); pParse->nMem = 1; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "compile_option", SQLITE_STATIC); while( (zOpt = sqlite3_compileoption_get(i++))!=0 ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zOpt, 0); + sqlite3VdbeLoadString(v, 1, zOpt); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); } + sqlite3VdbeReusable(v); } break; #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ #ifndef SQLITE_OMIT_WAL /* - ** PRAGMA [database.]wal_checkpoint = passive|full|restart + ** PRAGMA [schema.]wal_checkpoint = passive|full|restart|truncate ** ** Checkpoint the database. */ @@ -98447,14 +114463,11 @@ SQLITE_PRIVATE void sqlite3Pragma( eMode = SQLITE_CHECKPOINT_FULL; }else if( sqlite3StrICmp(zRight, "restart")==0 ){ eMode = SQLITE_CHECKPOINT_RESTART; + }else if( sqlite3StrICmp(zRight, "truncate")==0 ){ + eMode = SQLITE_CHECKPOINT_TRUNCATE; } } - sqlite3VdbeSetNumCols(v, 3); pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC); - sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); } @@ -98472,7 +114485,7 @@ SQLITE_PRIVATE void sqlite3Pragma( if( zRight ){ sqlite3_wal_autocheckpoint(db, sqlite3Atoi(zRight)); } - returnSingleInt(pParse, "wal_autocheckpoint", + returnSingleInt(v, db->xWalCallback==sqlite3WalDefaultHook ? SQLITE_PTR_TO_INT(db->pWalArg) : 0); } @@ -98482,8 +114495,9 @@ SQLITE_PRIVATE void sqlite3Pragma( /* ** PRAGMA shrink_memory ** - ** This pragma attempts to free as much memory as possible from the - ** current database connection. + ** IMPLEMENTATION-OF: R-23445-46109 This pragma causes the database + ** connection on which it is invoked to free up as much memory as it + ** can, by calling sqlite3_db_release_memory(). */ case PragTyp_SHRINK_MEMORY: { sqlite3_db_release_memory(db); @@ -98500,11 +114514,11 @@ SQLITE_PRIVATE void sqlite3Pragma( ** disables the timeout. */ /*case PragTyp_BUSY_TIMEOUT*/ default: { - assert( aPragmaNames[mid].ePragTyp==PragTyp_BUSY_TIMEOUT ); + assert( pPragma->ePragTyp==PragTyp_BUSY_TIMEOUT ); if( zRight ){ sqlite3_busy_timeout(db, sqlite3Atoi(zRight)); } - returnSingleInt(pParse, "timeout", db->busyTimeout); + returnSingleInt(v, db->busyTimeout); break; } @@ -98512,15 +114526,38 @@ SQLITE_PRIVATE void sqlite3Pragma( ** PRAGMA soft_heap_limit ** PRAGMA soft_heap_limit = N ** - ** Call sqlite3_soft_heap_limit64(N). Return the result. If N is omitted, - ** use -1. + ** IMPLEMENTATION-OF: R-26343-45930 This pragma invokes the + ** sqlite3_soft_heap_limit64() interface with the argument N, if N is + ** specified and is a non-negative integer. + ** IMPLEMENTATION-OF: R-64451-07163 The soft_heap_limit pragma always + ** returns the same integer that would be returned by the + ** sqlite3_soft_heap_limit64(-1) C-language function. */ case PragTyp_SOFT_HEAP_LIMIT: { sqlite3_int64 N; - if( zRight && sqlite3Atoi64(zRight, &N, 1000000, SQLITE_UTF8)==SQLITE_OK ){ + if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){ sqlite3_soft_heap_limit64(N); } - returnSingleInt(pParse, "soft_heap_limit", sqlite3_soft_heap_limit64(-1)); + returnSingleInt(v, sqlite3_soft_heap_limit64(-1)); + break; + } + + /* + ** PRAGMA threads + ** PRAGMA threads = N + ** + ** Configure the maximum number of worker threads. Return the new + ** maximum, which might be less than requested. + */ + case PragTyp_THREADS: { + sqlite3_int64 N; + if( zRight + && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK + && N>=0 + ){ + sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, (int)(N&0x7fffffff)); + } + returnSingleInt(v, sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, -1)); break; } @@ -98533,24 +114570,20 @@ SQLITE_PRIVATE void sqlite3Pragma( "unlocked", "shared", "reserved", "pending", "exclusive" }; int i; - sqlite3VdbeSetNumCols(v, 2); pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", SQLITE_STATIC); for(i=0; inDb; i++){ Btree *pBt; const char *zState = "unknown"; int j; - if( db->aDb[i].zName==0 ) continue; - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, db->aDb[i].zName, P4_STATIC); + if( db->aDb[i].zDbSName==0 ) continue; pBt = db->aDb[i].pBt; if( pBt==0 || sqlite3BtreePager(pBt)==0 ){ zState = "closed"; - }else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0, + }else if( sqlite3_file_control(db, i ? db->aDb[i].zDbSName : 0, SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){ zState = azLockName[j]; } - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, zState, P4_STATIC); + sqlite3VdbeMultiLoad(v, 1, "ss", db->aDb[i].zDbSName, zState); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); } break; @@ -98602,10 +114635,325 @@ SQLITE_PRIVATE void sqlite3Pragma( } /* End of the PRAGMA switch */ + /* The following block is a no-op unless SQLITE_DEBUG is defined. Its only + ** purpose is to execute assert() statements to verify that if the + ** PragFlg_NoColumns1 flag is set and the caller specified an argument + ** to the PRAGMA, the implementation has not added any OP_ResultRow + ** instructions to the VM. */ + if( (pPragma->mPragFlg & PragFlg_NoColumns1) && zRight ){ + sqlite3VdbeVerifyNoResultRow(v); + } + pragma_out: sqlite3DbFree(db, zLeft); sqlite3DbFree(db, zRight); } +#ifndef SQLITE_OMIT_VIRTUALTABLE +/***************************************************************************** +** Implementation of an eponymous virtual table that runs a pragma. +** +*/ +typedef struct PragmaVtab PragmaVtab; +typedef struct PragmaVtabCursor PragmaVtabCursor; +struct PragmaVtab { + sqlite3_vtab base; /* Base class. Must be first */ + sqlite3 *db; /* The database connection to which it belongs */ + const PragmaName *pName; /* Name of the pragma */ + u8 nHidden; /* Number of hidden columns */ + u8 iHidden; /* Index of the first hidden column */ +}; +struct PragmaVtabCursor { + sqlite3_vtab_cursor base; /* Base class. Must be first */ + sqlite3_stmt *pPragma; /* The pragma statement to run */ + sqlite_int64 iRowid; /* Current rowid */ + char *azArg[2]; /* Value of the argument and schema */ +}; + +/* +** Pragma virtual table module xConnect method. +*/ +static int pragmaVtabConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + const PragmaName *pPragma = (const PragmaName*)pAux; + PragmaVtab *pTab = 0; + int rc; + int i, j; + char cSep = '('; + StrAccum acc; + char zBuf[200]; + + UNUSED_PARAMETER(argc); + UNUSED_PARAMETER(argv); + sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0); + sqlite3StrAccumAppendAll(&acc, "CREATE TABLE x"); + for(i=0, j=pPragma->iPragCName; inPragCName; i++, j++){ + sqlite3XPrintf(&acc, "%c\"%s\"", cSep, pragCName[j]); + cSep = ','; + } + if( i==0 ){ + sqlite3XPrintf(&acc, "(\"%s\"", pPragma->zName); + cSep = ','; + i++; + } + j = 0; + if( pPragma->mPragFlg & PragFlg_Result1 ){ + sqlite3StrAccumAppendAll(&acc, ",arg HIDDEN"); + j++; + } + if( pPragma->mPragFlg & (PragFlg_SchemaOpt|PragFlg_SchemaReq) ){ + sqlite3StrAccumAppendAll(&acc, ",schema HIDDEN"); + j++; + } + sqlite3StrAccumAppend(&acc, ")", 1); + sqlite3StrAccumFinish(&acc); + assert( strlen(zBuf) < sizeof(zBuf)-1 ); + rc = sqlite3_declare_vtab(db, zBuf); + if( rc==SQLITE_OK ){ + pTab = (PragmaVtab*)sqlite3_malloc(sizeof(PragmaVtab)); + if( pTab==0 ){ + rc = SQLITE_NOMEM; + }else{ + memset(pTab, 0, sizeof(PragmaVtab)); + pTab->pName = pPragma; + pTab->db = db; + pTab->iHidden = i; + pTab->nHidden = j; + } + }else{ + *pzErr = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + } + + *ppVtab = (sqlite3_vtab*)pTab; + return rc; +} + +/* +** Pragma virtual table module xDisconnect method. +*/ +static int pragmaVtabDisconnect(sqlite3_vtab *pVtab){ + PragmaVtab *pTab = (PragmaVtab*)pVtab; + sqlite3_free(pTab); + return SQLITE_OK; +} + +/* Figure out the best index to use to search a pragma virtual table. +** +** There are not really any index choices. But we want to encourage the +** query planner to give == constraints on as many hidden parameters as +** possible, and especially on the first hidden parameter. So return a +** high cost if hidden parameters are unconstrained. +*/ +static int pragmaVtabBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ + PragmaVtab *pTab = (PragmaVtab*)tab; + const struct sqlite3_index_constraint *pConstraint; + int i, j; + int seen[2]; + + pIdxInfo->estimatedCost = (double)1; + if( pTab->nHidden==0 ){ return SQLITE_OK; } + pConstraint = pIdxInfo->aConstraint; + seen[0] = 0; + seen[1] = 0; + for(i=0; inConstraint; i++, pConstraint++){ + if( pConstraint->usable==0 ) continue; + if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; + if( pConstraint->iColumn < pTab->iHidden ) continue; + j = pConstraint->iColumn - pTab->iHidden; + assert( j < 2 ); + seen[j] = i+1; + } + if( seen[0]==0 ){ + pIdxInfo->estimatedCost = (double)2147483647; + pIdxInfo->estimatedRows = 2147483647; + return SQLITE_OK; + } + j = seen[0]-1; + pIdxInfo->aConstraintUsage[j].argvIndex = 1; + pIdxInfo->aConstraintUsage[j].omit = 1; + if( seen[1]==0 ) return SQLITE_OK; + pIdxInfo->estimatedCost = (double)20; + pIdxInfo->estimatedRows = 20; + j = seen[1]-1; + pIdxInfo->aConstraintUsage[j].argvIndex = 2; + pIdxInfo->aConstraintUsage[j].omit = 1; + return SQLITE_OK; +} + +/* Create a new cursor for the pragma virtual table */ +static int pragmaVtabOpen(sqlite3_vtab *pVtab, sqlite3_vtab_cursor **ppCursor){ + PragmaVtabCursor *pCsr; + pCsr = (PragmaVtabCursor*)sqlite3_malloc(sizeof(*pCsr)); + if( pCsr==0 ) return SQLITE_NOMEM; + memset(pCsr, 0, sizeof(PragmaVtabCursor)); + pCsr->base.pVtab = pVtab; + *ppCursor = &pCsr->base; + return SQLITE_OK; +} + +/* Clear all content from pragma virtual table cursor. */ +static void pragmaVtabCursorClear(PragmaVtabCursor *pCsr){ + int i; + sqlite3_finalize(pCsr->pPragma); + pCsr->pPragma = 0; + for(i=0; iazArg); i++){ + sqlite3_free(pCsr->azArg[i]); + pCsr->azArg[i] = 0; + } +} + +/* Close a pragma virtual table cursor */ +static int pragmaVtabClose(sqlite3_vtab_cursor *cur){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)cur; + pragmaVtabCursorClear(pCsr); + sqlite3_free(pCsr); + return SQLITE_OK; +} + +/* Advance the pragma virtual table cursor to the next row */ +static int pragmaVtabNext(sqlite3_vtab_cursor *pVtabCursor){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; + int rc = SQLITE_OK; + + /* Increment the xRowid value */ + pCsr->iRowid++; + assert( pCsr->pPragma ); + if( SQLITE_ROW!=sqlite3_step(pCsr->pPragma) ){ + rc = sqlite3_finalize(pCsr->pPragma); + pCsr->pPragma = 0; + pragmaVtabCursorClear(pCsr); + } + return rc; +} + +/* +** Pragma virtual table module xFilter method. +*/ +static int pragmaVtabFilter( + sqlite3_vtab_cursor *pVtabCursor, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; + PragmaVtab *pTab = (PragmaVtab*)(pVtabCursor->pVtab); + int rc; + int i, j; + StrAccum acc; + char *zSql; + + UNUSED_PARAMETER(idxNum); + UNUSED_PARAMETER(idxStr); + pragmaVtabCursorClear(pCsr); + j = (pTab->pName->mPragFlg & PragFlg_Result1)!=0 ? 0 : 1; + for(i=0; iazArg) ); + pCsr->azArg[j] = sqlite3_mprintf("%s", sqlite3_value_text(argv[i])); + if( pCsr->azArg[j]==0 ){ + return SQLITE_NOMEM; + } + } + sqlite3StrAccumInit(&acc, 0, 0, 0, pTab->db->aLimit[SQLITE_LIMIT_SQL_LENGTH]); + sqlite3StrAccumAppendAll(&acc, "PRAGMA "); + if( pCsr->azArg[1] ){ + sqlite3XPrintf(&acc, "%Q.", pCsr->azArg[1]); + } + sqlite3StrAccumAppendAll(&acc, pTab->pName->zName); + if( pCsr->azArg[0] ){ + sqlite3XPrintf(&acc, "=%Q", pCsr->azArg[0]); + } + zSql = sqlite3StrAccumFinish(&acc); + if( zSql==0 ) return SQLITE_NOMEM; + rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pPragma, 0); + sqlite3_free(zSql); + if( rc!=SQLITE_OK ){ + pTab->base.zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pTab->db)); + return rc; + } + return pragmaVtabNext(pVtabCursor); +} + +/* +** Pragma virtual table module xEof method. +*/ +static int pragmaVtabEof(sqlite3_vtab_cursor *pVtabCursor){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; + return (pCsr->pPragma==0); +} + +/* The xColumn method simply returns the corresponding column from +** the PRAGMA. +*/ +static int pragmaVtabColumn( + sqlite3_vtab_cursor *pVtabCursor, + sqlite3_context *ctx, + int i +){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; + PragmaVtab *pTab = (PragmaVtab*)(pVtabCursor->pVtab); + if( iiHidden ){ + sqlite3_result_value(ctx, sqlite3_column_value(pCsr->pPragma, i)); + }else{ + sqlite3_result_text(ctx, pCsr->azArg[i-pTab->iHidden],-1,SQLITE_TRANSIENT); + } + return SQLITE_OK; +} + +/* +** Pragma virtual table module xRowid method. +*/ +static int pragmaVtabRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *p){ + PragmaVtabCursor *pCsr = (PragmaVtabCursor*)pVtabCursor; + *p = pCsr->iRowid; + return SQLITE_OK; +} + +/* The pragma virtual table object */ +static const sqlite3_module pragmaVtabModule = { + 0, /* iVersion */ + 0, /* xCreate - create a table */ + pragmaVtabConnect, /* xConnect - connect to an existing table */ + pragmaVtabBestIndex, /* xBestIndex - Determine search strategy */ + pragmaVtabDisconnect, /* xDisconnect - Disconnect from a table */ + 0, /* xDestroy - Drop a table */ + pragmaVtabOpen, /* xOpen - open a cursor */ + pragmaVtabClose, /* xClose - close a cursor */ + pragmaVtabFilter, /* xFilter - configure scan constraints */ + pragmaVtabNext, /* xNext - advance a cursor */ + pragmaVtabEof, /* xEof */ + pragmaVtabColumn, /* xColumn - read data */ + pragmaVtabRowid, /* xRowid - read data */ + 0, /* xUpdate - write data */ + 0, /* xBegin - begin transaction */ + 0, /* xSync - sync transaction */ + 0, /* xCommit - commit transaction */ + 0, /* xRollback - rollback transaction */ + 0, /* xFindFunction - function overloading */ + 0, /* xRename - rename the table */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0 /* xRollbackTo */ +}; + +/* +** Check to see if zTabName is really the name of a pragma. If it is, +** then register an eponymous virtual table for that pragma and return +** a pointer to the Module object for the new virtual table. +*/ +SQLITE_PRIVATE Module *sqlite3PragmaVtabRegister(sqlite3 *db, const char *zName){ + const PragmaName *pName; + assert( sqlite3_strnicmp(zName, "pragma_", 7)==0 ); + pName = pragmaLocate(zName+7); + if( pName==0 ) return 0; + if( (pName->mPragFlg & (PragFlg_Result0|PragFlg_Result1))==0 ) return 0; + assert( sqlite3HashFind(&db->aModule, zName)==0 ); + return sqlite3VtabCreateModule(db, zName, &pragmaVtabModule, (void*)pName, 0); +} + +#endif /* SQLITE_OMIT_VIRTUALTABLE */ #endif /* SQLITE_OMIT_PRAGMA */ @@ -98626,6 +114974,7 @@ pragma_out: ** interface, and routines that contribute to loading the database schema ** from disk. */ +/* #include "sqliteInt.h" */ /* ** Fill the InitData structure with an error message that indicates @@ -98638,15 +114987,14 @@ static void corruptSchema( ){ sqlite3 *db = pData->db; if( !db->mallocFailed && (db->flags & SQLITE_RecoveryMode)==0 ){ + char *z; if( zObj==0 ) zObj = "?"; - sqlite3SetString(pData->pzErrMsg, db, - "malformed database schema (%s)", zObj); - if( zExtra ){ - *pData->pzErrMsg = sqlite3MAppendf(db, *pData->pzErrMsg, - "%s - %s", *pData->pzErrMsg, zExtra); - } + z = sqlite3MPrintf(db, "malformed database schema (%s)", zObj); + if( zExtra ) z = sqlite3MPrintf(db, "%z - %s", z, zExtra); + sqlite3DbFree(db, *pData->pzErrMsg); + *pData->pzErrMsg = z; } - pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT_BKPT; + pData->rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_CORRUPT_BKPT; } /* @@ -98679,13 +115027,14 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */ if( argv[1]==0 ){ corruptSchema(pData, argv[0], 0); - }else if( argv[2] && argv[2][0] ){ + }else if( sqlite3_strnicmp(argv[2],"create ",7)==0 ){ /* Call the parser to process a CREATE TABLE, INDEX or VIEW. ** But because db->init.busy is set to 1, no VDBE code is generated ** or executed. All the parser does is build the internal data ** structures that describe the table, index, or view. */ int rc; + u8 saved_iDb = db->init.iDb; sqlite3_stmt *pStmt; TESTONLY(int rcp); /* Return code from sqlite3_prepare() */ @@ -98696,22 +115045,23 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char TESTONLY(rcp = ) sqlite3_prepare(db, argv[2], -1, &pStmt, 0); rc = db->errCode; assert( (rc&0xFF)==(rcp&0xFF) ); - db->init.iDb = 0; + db->init.iDb = saved_iDb; + assert( saved_iDb==0 || (db->flags & SQLITE_Vacuum)!=0 ); if( SQLITE_OK!=rc ){ if( db->init.orphanTrigger ){ assert( iDb==1 ); }else{ pData->rc = rc; if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); }else if( rc!=SQLITE_INTERRUPT && (rc&0xFF)!=SQLITE_LOCKED ){ corruptSchema(pData, argv[0], sqlite3_errmsg(db)); } } } sqlite3_finalize(pStmt); - }else if( argv[0]==0 ){ - corruptSchema(pData, 0, 0); + }else if( argv[0]==0 || (argv[2]!=0 && argv[2][0]!=0) ){ + corruptSchema(pData, argv[0], 0); }else{ /* If the SQL column is blank it means this is an index that ** was created to be the PRIMARY KEY or to fulfill a UNIQUE @@ -98720,7 +115070,7 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char ** to do here is record the root page number for that index. */ Index *pIndex; - pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName); + pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zDbSName); if( pIndex==0 ){ /* This can occur if there exists an index on a TEMP table which ** has the same name as another index on a permanent index. Since @@ -98749,61 +115099,27 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ #ifndef SQLITE_OMIT_DEPRECATED int size; #endif - Table *pTab; Db *pDb; char const *azArg[4]; int meta[5]; InitData initData; - char const *zMasterSchema; - char const *zMasterName; + const char *zMasterName; int openedTransaction = 0; - /* - ** The master database table has a structure like this - */ - static const char master_schema[] = - "CREATE TABLE sqlite_master(\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")" - ; -#ifndef SQLITE_OMIT_TEMPDB - static const char temp_master_schema[] = - "CREATE TEMP TABLE sqlite_temp_master(\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")" - ; -#else - #define temp_master_schema 0 -#endif - assert( iDb>=0 && iDbnDb ); assert( db->aDb[iDb].pSchema ); assert( sqlite3_mutex_held(db->mutex) ); assert( iDb==1 || sqlite3BtreeHoldsMutex(db->aDb[iDb].pBt) ); - /* zMasterSchema and zInitScript are set to point at the master schema - ** and initialisation script appropriate for the database being - ** initialized. zMasterName is the name of the master table. - */ - if( !OMIT_TEMPDB && iDb==1 ){ - zMasterSchema = temp_master_schema; - }else{ - zMasterSchema = master_schema; - } - zMasterName = SCHEMA_TABLE(iDb); - - /* Construct the schema tables. */ - azArg[0] = zMasterName; + /* Construct the in-memory representation schema tables (sqlite_master or + ** sqlite_temp_master) by invoking the parser directly. The appropriate + ** table name will be inserted automatically by the parser so we can just + ** use the abbreviation "x" here. The parser will also automatically tag + ** the schema table as read-only. */ + azArg[0] = zMasterName = SCHEMA_TABLE(iDb); azArg[1] = "1"; - azArg[2] = zMasterSchema; + azArg[2] = "CREATE TABLE x(type text,name text,tbl_name text," + "rootpage integer,sql text)"; azArg[3] = 0; initData.db = db; initData.iDb = iDb; @@ -98814,10 +115130,6 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ rc = initData.rc; goto error_out; } - pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName); - if( ALWAYS(pTab) ){ - pTab->tabFlags |= TF_Readonly; - } /* Create a cursor to hold the database open */ @@ -98836,7 +115148,7 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ if( !sqlite3BtreeIsInReadTrans(pDb->pBt) ){ rc = sqlite3BtreeBeginTrans(pDb->pBt, 0); if( rc!=SQLITE_OK ){ - sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc)); + sqlite3SetString(pzErrMsg, db, sqlite3ErrStr(rc)); goto initone_error_out; } openedTransaction = 1; @@ -98936,11 +115248,11 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ { char *zSql; zSql = sqlite3MPrintf(db, - "SELECT name, rootpage, sql FROM '%q'.%s ORDER BY rowid", - db->aDb[iDb].zName, zMasterName); + "SELECT name, rootpage, sql FROM \"%w\".%s ORDER BY rowid", + db->aDb[iDb].zDbSName, zMasterName); #ifndef SQLITE_OMIT_AUTHORIZATION { - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); + sqlite3_xauth xAuth; xAuth = db->xAuth; db->xAuth = 0; #endif @@ -98958,7 +115270,7 @@ static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ #endif } if( db->mallocFailed ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; sqlite3ResetAllSchemasOfConnection(db); } if( rc==SQLITE_OK || (db->flags&SQLITE_RecoveryMode)){ @@ -98986,7 +115298,7 @@ initone_error_out: error_out: if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } return rc; } @@ -99006,8 +115318,11 @@ SQLITE_PRIVATE int sqlite3Init(sqlite3 *db, char **pzErrMsg){ int commit_internal = !(db->flags&SQLITE_InternChanges); assert( sqlite3_mutex_held(db->mutex) ); + assert( sqlite3BtreeHoldsMutex(db->aDb[0].pBt) ); + assert( db->init.busy==0 ); rc = SQLITE_OK; db->init.busy = 1; + ENC(db) = SCHEMA_ENC(db); for(i=0; rc==SQLITE_OK && inDb; i++){ if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue; rc = sqlite3InitOne(db, i, pzErrMsg); @@ -99021,8 +115336,8 @@ SQLITE_PRIVATE int sqlite3Init(sqlite3 *db, char **pzErrMsg){ ** schema may contain references to objects in other databases. */ #ifndef SQLITE_OMIT_TEMPDB - if( rc==SQLITE_OK && ALWAYS(db->nDb>1) - && !DbHasProperty(db, 1, DB_SchemaLoaded) ){ + assert( db->nDb>1 ); + if( rc==SQLITE_OK && !DbHasProperty(db, 1, DB_SchemaLoaded) ){ rc = sqlite3InitOne(db, 1, pzErrMsg); if( rc ){ sqlite3ResetOneSchema(db, 1); @@ -99081,7 +115396,7 @@ static void schemaIsValid(Parse *pParse){ if( !sqlite3BtreeIsInReadTrans(pBt) ){ rc = sqlite3BtreeBeginTrans(pBt, 0); if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } if( rc!=SQLITE_OK ) return; openedTransaction = 1; @@ -99144,6 +115459,11 @@ SQLITE_PRIVATE void sqlite3ParserReset(Parse *pParse){ sqlite3 *db = pParse->db; sqlite3DbFree(db, pParse->aLabel); sqlite3ExprListDelete(db, pParse->pConstExpr); + if( db ){ + assert( db->lookaside.bDisable >= pParse->disableLookaside ); + db->lookaside.bDisable -= pParse->disableLookaside; + } + pParse->disableLookaside = 0; } } @@ -99159,20 +115479,16 @@ static int sqlite3Prepare( sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ const char **pzTail /* OUT: End of parsed string */ ){ - Parse *pParse; /* Parsing context */ char *zErrMsg = 0; /* Error message */ int rc = SQLITE_OK; /* Result code */ int i; /* Loop counter */ + Parse sParse; /* Parsing context */ - /* Allocate the parsing context */ - pParse = sqlite3StackAllocZero(db, sizeof(*pParse)); - if( pParse==0 ){ - rc = SQLITE_NOMEM; - goto end_prepare; - } - pParse->pReprepare = pReprepare; + memset(&sParse, 0, PARSE_HDR_SZ); + memset(PARSE_TAIL(&sParse), 0, PARSE_TAIL_SZ); + sParse.pReprepare = pReprepare; assert( ppStmt && *ppStmt==0 ); - assert( !db->mallocFailed ); + /* assert( !db->mallocFailed ); // not true with SQLITE_USE_ALLOCA */ assert( sqlite3_mutex_held(db->mutex) ); /* Check to verify that it is possible to get a read lock on all @@ -99204,8 +115520,8 @@ static int sqlite3Prepare( assert( sqlite3BtreeHoldsMutex(pBt) ); rc = sqlite3BtreeSchemaLocked(pBt); if( rc ){ - const char *zDb = db->aDb[i].zName; - sqlite3Error(db, rc, "database schema is locked: %s", zDb); + const char *zDb = db->aDb[i].zDbSName; + sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb); testcase( db->flags & SQLITE_ReadUncommitted ); goto end_prepare; } @@ -99214,98 +115530,93 @@ static int sqlite3Prepare( sqlite3VtabUnlockList(db); - pParse->db = db; - pParse->nQueryLoop = 0; /* Logarithmic, so 0 really means 1 */ + sParse.db = db; if( nBytes>=0 && (nBytes==0 || zSql[nBytes-1]!=0) ){ char *zSqlCopy; int mxLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH]; testcase( nBytes==mxLen ); testcase( nBytes==mxLen+1 ); if( nBytes>mxLen ){ - sqlite3Error(db, SQLITE_TOOBIG, "statement too long"); + sqlite3ErrorWithMsg(db, SQLITE_TOOBIG, "statement too long"); rc = sqlite3ApiExit(db, SQLITE_TOOBIG); goto end_prepare; } zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes); if( zSqlCopy ){ - sqlite3RunParser(pParse, zSqlCopy, &zErrMsg); + sqlite3RunParser(&sParse, zSqlCopy, &zErrMsg); + sParse.zTail = &zSql[sParse.zTail-zSqlCopy]; sqlite3DbFree(db, zSqlCopy); - pParse->zTail = &zSql[pParse->zTail-zSqlCopy]; }else{ - pParse->zTail = &zSql[nBytes]; + sParse.zTail = &zSql[nBytes]; } }else{ - sqlite3RunParser(pParse, zSql, &zErrMsg); + sqlite3RunParser(&sParse, zSql, &zErrMsg); } - assert( 0==pParse->nQueryLoop ); + assert( 0==sParse.nQueryLoop ); - if( db->mallocFailed ){ - pParse->rc = SQLITE_NOMEM; - } - if( pParse->rc==SQLITE_DONE ) pParse->rc = SQLITE_OK; - if( pParse->checkSchema ){ - schemaIsValid(pParse); + if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK; + if( sParse.checkSchema ){ + schemaIsValid(&sParse); } if( db->mallocFailed ){ - pParse->rc = SQLITE_NOMEM; + sParse.rc = SQLITE_NOMEM_BKPT; } if( pzTail ){ - *pzTail = pParse->zTail; + *pzTail = sParse.zTail; } - rc = pParse->rc; + rc = sParse.rc; #ifndef SQLITE_OMIT_EXPLAIN - if( rc==SQLITE_OK && pParse->pVdbe && pParse->explain ){ + if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){ static const char * const azColName[] = { "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment", "selectid", "order", "from", "detail" }; int iFirst, mx; - if( pParse->explain==2 ){ - sqlite3VdbeSetNumCols(pParse->pVdbe, 4); + if( sParse.explain==2 ){ + sqlite3VdbeSetNumCols(sParse.pVdbe, 4); iFirst = 8; mx = 12; }else{ - sqlite3VdbeSetNumCols(pParse->pVdbe, 8); + sqlite3VdbeSetNumCols(sParse.pVdbe, 8); iFirst = 0; mx = 8; } for(i=iFirst; ipVdbe, i-iFirst, COLNAME_NAME, + sqlite3VdbeSetColName(sParse.pVdbe, i-iFirst, COLNAME_NAME, azColName[i], SQLITE_STATIC); } } #endif if( db->init.busy==0 ){ - Vdbe *pVdbe = pParse->pVdbe; - sqlite3VdbeSetSql(pVdbe, zSql, (int)(pParse->zTail-zSql), saveSqlFlag); + Vdbe *pVdbe = sParse.pVdbe; + sqlite3VdbeSetSql(pVdbe, zSql, (int)(sParse.zTail-zSql), saveSqlFlag); } - if( pParse->pVdbe && (rc!=SQLITE_OK || db->mallocFailed) ){ - sqlite3VdbeFinalize(pParse->pVdbe); + if( sParse.pVdbe && (rc!=SQLITE_OK || db->mallocFailed) ){ + sqlite3VdbeFinalize(sParse.pVdbe); assert(!(*ppStmt)); }else{ - *ppStmt = (sqlite3_stmt*)pParse->pVdbe; + *ppStmt = (sqlite3_stmt*)sParse.pVdbe; } if( zErrMsg ){ - sqlite3Error(db, rc, "%s", zErrMsg); + sqlite3ErrorWithMsg(db, rc, "%s", zErrMsg); sqlite3DbFree(db, zErrMsg); }else{ - sqlite3Error(db, rc, 0); + sqlite3Error(db, rc); } /* Delete any TriggerPrg structures allocated while parsing this statement. */ - while( pParse->pTriggerPrg ){ - TriggerPrg *pT = pParse->pTriggerPrg; - pParse->pTriggerPrg = pT->pNext; + while( sParse.pTriggerPrg ){ + TriggerPrg *pT = sParse.pTriggerPrg; + sParse.pTriggerPrg = pT->pNext; sqlite3DbFree(db, pT); } end_prepare: - sqlite3ParserReset(pParse); - sqlite3StackFree(db, pParse); + sqlite3ParserReset(&sParse); rc = sqlite3ApiExit(db, rc); assert( (rc&db->errMask)==rc ); return rc; @@ -99320,9 +115631,12 @@ static int sqlite3LockAndPrepare( const char **pzTail /* OUT: End of parsed string */ ){ int rc; - assert( ppStmt!=0 ); + +#ifdef SQLITE_ENABLE_API_ARMOR + if( ppStmt==0 ) return SQLITE_MISUSE_BKPT; +#endif *ppStmt = 0; - if( !sqlite3SafetyCheckOk(db) ){ + if( !sqlite3SafetyCheckOk(db)||zSql==0 ){ return SQLITE_MISUSE_BKPT; } sqlite3_mutex_enter(db->mutex); @@ -99360,7 +115674,7 @@ SQLITE_PRIVATE int sqlite3Reprepare(Vdbe *p){ rc = sqlite3LockAndPrepare(db, zSql, -1, 0, p, &pNew, 0); if( rc ){ if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; + sqlite3OomFault(db); } assert( pNew==0 ); return rc; @@ -99429,9 +115743,11 @@ static int sqlite3Prepare16( const char *zTail8 = 0; int rc = SQLITE_OK; - assert( ppStmt ); +#ifdef SQLITE_ENABLE_API_ARMOR + if( ppStmt==0 ) return SQLITE_MISUSE_BKPT; +#endif *ppStmt = 0; - if( !sqlite3SafetyCheckOk(db) ){ + if( !sqlite3SafetyCheckOk(db)||zSql==0 ){ return SQLITE_MISUSE_BKPT; } if( nBytes>=0 ){ @@ -99512,23 +115828,74 @@ SQLITE_API int sqlite3_prepare16_v2( ** This file contains C code routines that are called by the parser ** to handle SELECT statements in SQLite. */ +/* #include "sqliteInt.h" */ + +/* +** Trace output macros +*/ +#if SELECTTRACE_ENABLED +/***/ int sqlite3SelectTrace = 0; +# define SELECTTRACE(K,P,S,X) \ + if(sqlite3SelectTrace&(K)) \ + sqlite3DebugPrintf("%*s%s.%p: ",(P)->nSelectIndent*2-2,"",\ + (S)->zSelName,(S)),\ + sqlite3DebugPrintf X +#else +# define SELECTTRACE(K,P,S,X) +#endif /* -** Delete all the content of a Select structure but do not deallocate -** the select structure itself. +** An instance of the following object is used to record information about +** how to process the DISTINCT keyword, to simplify passing that information +** into the selectInnerLoop() routine. */ -static void clearSelect(sqlite3 *db, Select *p){ - sqlite3ExprListDelete(db, p->pEList); - sqlite3SrcListDelete(db, p->pSrc); - sqlite3ExprDelete(db, p->pWhere); - sqlite3ExprListDelete(db, p->pGroupBy); - sqlite3ExprDelete(db, p->pHaving); - sqlite3ExprListDelete(db, p->pOrderBy); - sqlite3SelectDelete(db, p->pPrior); - sqlite3ExprDelete(db, p->pLimit); - sqlite3ExprDelete(db, p->pOffset); - sqlite3WithDelete(db, p->pWith); +typedef struct DistinctCtx DistinctCtx; +struct DistinctCtx { + u8 isTnct; /* True if the DISTINCT keyword is present */ + u8 eTnctType; /* One of the WHERE_DISTINCT_* operators */ + int tabTnct; /* Ephemeral table used for DISTINCT processing */ + int addrTnct; /* Address of OP_OpenEphemeral opcode for tabTnct */ +}; + +/* +** An instance of the following object is used to record information about +** the ORDER BY (or GROUP BY) clause of query is being coded. +*/ +typedef struct SortCtx SortCtx; +struct SortCtx { + ExprList *pOrderBy; /* The ORDER BY (or GROUP BY clause) */ + int nOBSat; /* Number of ORDER BY terms satisfied by indices */ + int iECursor; /* Cursor number for the sorter */ + int regReturn; /* Register holding block-output return address */ + int labelBkOut; /* Start label for the block-output subroutine */ + int addrSortIndex; /* Address of the OP_SorterOpen or OP_OpenEphemeral */ + int labelDone; /* Jump here when done, ex: LIMIT reached */ + u8 sortFlags; /* Zero or more SORTFLAG_* bits */ + u8 bOrderedInnerLoop; /* ORDER BY correctly sorts the inner loop */ +}; +#define SORTFLAG_UseSorter 0x01 /* Use SorterOpen instead of OpenEphemeral */ + +/* +** Delete all the content of a Select structure. Deallocate the structure +** itself only if bFree is true. +*/ +static void clearSelect(sqlite3 *db, Select *p, int bFree){ + while( p ){ + Select *pPrior = p->pPrior; + sqlite3ExprListDelete(db, p->pEList); + sqlite3SrcListDelete(db, p->pSrc); + sqlite3ExprDelete(db, p->pWhere); + sqlite3ExprListDelete(db, p->pGroupBy); + sqlite3ExprDelete(db, p->pHaving); + sqlite3ExprListDelete(db, p->pOrderBy); + sqlite3ExprDelete(db, p->pLimit); + sqlite3ExprDelete(db, p->pOffset); + if( p->pWith ) sqlite3WithDelete(db, p->pWith); + if( bFree ) sqlite3DbFree(db, p); + p = pPrior; + bFree = 1; + } } /* @@ -99537,7 +115904,7 @@ static void clearSelect(sqlite3 *db, Select *p){ SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest *pDest, int eDest, int iParm){ pDest->eDest = (u8)eDest; pDest->iSDParm = iParm; - pDest->affSdst = 0; + pDest->zAffSdst = 0; pDest->iSdst = 0; pDest->nSdst = 0; } @@ -99555,41 +115922,46 @@ SQLITE_PRIVATE Select *sqlite3SelectNew( ExprList *pGroupBy, /* the GROUP BY clause */ Expr *pHaving, /* the HAVING clause */ ExprList *pOrderBy, /* the ORDER BY clause */ - u16 selFlags, /* Flag parameters, such as SF_Distinct */ + u32 selFlags, /* Flag parameters, such as SF_Distinct */ Expr *pLimit, /* LIMIT value. NULL means not used */ Expr *pOffset /* OFFSET value. NULL means no offset */ ){ Select *pNew; Select standin; sqlite3 *db = pParse->db; - pNew = sqlite3DbMallocZero(db, sizeof(*pNew) ); - assert( db->mallocFailed || !pOffset || pLimit ); /* OFFSET implies LIMIT */ + pNew = sqlite3DbMallocRawNN(db, sizeof(*pNew) ); if( pNew==0 ){ assert( db->mallocFailed ); pNew = &standin; - memset(pNew, 0, sizeof(*pNew)); } if( pEList==0 ){ - pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db,TK_ALL,0)); + pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db,TK_ASTERISK,0)); } pNew->pEList = pEList; + pNew->op = TK_SELECT; + pNew->selFlags = selFlags; + pNew->iLimit = 0; + pNew->iOffset = 0; +#if SELECTTRACE_ENABLED + pNew->zSelName[0] = 0; +#endif + pNew->addrOpenEphm[0] = -1; + pNew->addrOpenEphm[1] = -1; + pNew->nSelectRow = 0; if( pSrc==0 ) pSrc = sqlite3DbMallocZero(db, sizeof(*pSrc)); pNew->pSrc = pSrc; pNew->pWhere = pWhere; pNew->pGroupBy = pGroupBy; pNew->pHaving = pHaving; pNew->pOrderBy = pOrderBy; - pNew->selFlags = selFlags; - pNew->op = TK_SELECT; + pNew->pPrior = 0; + pNew->pNext = 0; pNew->pLimit = pLimit; pNew->pOffset = pOffset; - assert( pOffset==0 || pLimit!=0 ); - pNew->addrOpenEphm[0] = -1; - pNew->addrOpenEphm[1] = -1; - pNew->addrOpenEphm[2] = -1; + pNew->pWith = 0; + assert( pOffset==0 || pLimit!=0 || pParse->nErr>0 || db->mallocFailed!=0 ); if( db->mallocFailed ) { - clearSelect(db, pNew); - if( pNew!=&standin ) sqlite3DbFree(db, pNew); + clearSelect(db, pNew, pNew!=&standin); pNew = 0; }else{ assert( pNew->pSrc!=0 || pParse->nErr>0 ); @@ -99598,14 +115970,31 @@ SQLITE_PRIVATE Select *sqlite3SelectNew( return pNew; } +#if SELECTTRACE_ENABLED +/* +** Set the name of a Select object +*/ +SQLITE_PRIVATE void sqlite3SelectSetName(Select *p, const char *zName){ + if( p && zName ){ + sqlite3_snprintf(sizeof(p->zSelName), p->zSelName, "%s", zName); + } +} +#endif + + /* ** Delete the given Select structure and all of its substructures. */ SQLITE_PRIVATE void sqlite3SelectDelete(sqlite3 *db, Select *p){ - if( p ){ - clearSelect(db, p); - sqlite3DbFree(db, p); - } + if( p ) clearSelect(db, p, 1); +} + +/* +** Return a pointer to the right-most SELECT statement in a compound. +*/ +static Select *findRightmost(Select *p){ + while( p->pNext ) p = p->pNext; + return p; } /* @@ -99761,7 +116150,7 @@ static void addWhereTerm( pE1 = sqlite3CreateColumnExpr(db, pSrc, iLeft, iColLeft); pE2 = sqlite3CreateColumnExpr(db, pSrc, iRight, iColRight); - pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2, 0); + pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2); if( pEq && isOuterJoin ){ ExprSetProperty(pEq, EP_FromJoin); assert( !ExprHasProperty(pEq, EP_TokenOnly|EP_Reduced) ); @@ -99803,6 +116192,12 @@ static void setJoinExpr(Expr *p, int iTable){ assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) ); ExprSetVVAProperty(p, EP_NoReduce); p->iRightJoinTable = (i16)iTable; + if( p->op==TK_FUNCTION && p->x.pList ){ + int i; + for(i=0; ix.pList->nExpr; i++){ + setJoinExpr(p->x.pList->a[i].pExpr, iTable); + } + } setJoinExpr(p->pLeft, iTable); p = p->pRight; } @@ -99837,12 +116232,12 @@ static int sqliteProcessJoin(Parse *pParse, Select *p){ int isOuter; if( NEVER(pLeftTab==0 || pRightTab==0) ) continue; - isOuter = (pRight->jointype & JT_OUTER)!=0; + isOuter = (pRight->fg.jointype & JT_OUTER)!=0; /* When the NATURAL keyword is present, add WHERE clause terms for ** every column that the two tables have in common. */ - if( pRight->jointype & JT_NATURAL ){ + if( pRight->fg.jointype & JT_NATURAL ){ if( pRight->pOn || pRight->pUsing ){ sqlite3ErrorMsg(pParse, "a NATURAL join may not have " "an ON or USING clause", 0); @@ -99910,49 +116305,133 @@ static int sqliteProcessJoin(Parse *pParse, Select *p){ return 0; } +/* Forward reference */ +static KeyInfo *keyInfoFromExprList( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* Form the KeyInfo object from this ExprList */ + int iStart, /* Begin with this column of pList */ + int nExtra /* Add this many extra columns to the end */ +); + /* -** Insert code into "v" that will push the record on the top of the -** stack into the sorter. +** Generate code that will push the record in registers regData +** through regData+nData-1 onto the sorter. */ static void pushOntoSorter( Parse *pParse, /* Parser context */ - ExprList *pOrderBy, /* The ORDER BY clause */ + SortCtx *pSort, /* Information about the ORDER BY clause */ Select *pSelect, /* The whole SELECT statement */ - int regData /* Register holding data to be sorted */ + int regData, /* First register holding data to be sorted */ + int regOrigData, /* First register holding data before packing */ + int nData, /* Number of elements in the data array */ + int nPrefixReg /* No. of reg prior to regData available for use */ ){ - Vdbe *v = pParse->pVdbe; - int nExpr = pOrderBy->nExpr; - int regBase = sqlite3GetTempRange(pParse, nExpr+2); - int regRecord = sqlite3GetTempReg(pParse); - int op; - sqlite3ExprCacheClear(pParse); - sqlite3ExprCodeExprList(pParse, pOrderBy, regBase, 0); - sqlite3VdbeAddOp2(v, OP_Sequence, pOrderBy->iECursor, regBase+nExpr); - sqlite3ExprCodeMove(pParse, regData, regBase+nExpr+1, 1); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nExpr + 2, regRecord); - if( pSelect->selFlags & SF_UseSorter ){ + Vdbe *v = pParse->pVdbe; /* Stmt under construction */ + int bSeq = ((pSort->sortFlags & SORTFLAG_UseSorter)==0); + int nExpr = pSort->pOrderBy->nExpr; /* No. of ORDER BY terms */ + int nBase = nExpr + bSeq + nData; /* Fields in sorter record */ + int regBase; /* Regs for sorter record */ + int regRecord = ++pParse->nMem; /* Assembled sorter record */ + int nOBSat = pSort->nOBSat; /* ORDER BY terms to skip */ + int op; /* Opcode to add sorter record to sorter */ + int iLimit; /* LIMIT counter */ + + assert( bSeq==0 || bSeq==1 ); + assert( nData==1 || regData==regOrigData || regOrigData==0 ); + if( nPrefixReg ){ + assert( nPrefixReg==nExpr+bSeq ); + regBase = regData - nExpr - bSeq; + }else{ + regBase = pParse->nMem + 1; + pParse->nMem += nBase; + } + assert( pSelect->iOffset==0 || pSelect->iLimit!=0 ); + iLimit = pSelect->iOffset ? pSelect->iOffset+1 : pSelect->iLimit; + pSort->labelDone = sqlite3VdbeMakeLabel(v); + sqlite3ExprCodeExprList(pParse, pSort->pOrderBy, regBase, regOrigData, + SQLITE_ECEL_DUP | (regOrigData? SQLITE_ECEL_REF : 0)); + if( bSeq ){ + sqlite3VdbeAddOp2(v, OP_Sequence, pSort->iECursor, regBase+nExpr); + } + if( nPrefixReg==0 && nData>0 ){ + sqlite3ExprCodeMove(pParse, regData, regBase+nExpr+bSeq, nData); + } + sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase+nOBSat, nBase-nOBSat, regRecord); + if( nOBSat>0 ){ + int regPrevKey; /* The first nOBSat columns of the previous row */ + int addrFirst; /* Address of the OP_IfNot opcode */ + int addrJmp; /* Address of the OP_Jump opcode */ + VdbeOp *pOp; /* Opcode that opens the sorter */ + int nKey; /* Number of sorting key columns, including OP_Sequence */ + KeyInfo *pKI; /* Original KeyInfo on the sorter table */ + + regPrevKey = pParse->nMem+1; + pParse->nMem += pSort->nOBSat; + nKey = nExpr - pSort->nOBSat + bSeq; + if( bSeq ){ + addrFirst = sqlite3VdbeAddOp1(v, OP_IfNot, regBase+nExpr); + }else{ + addrFirst = sqlite3VdbeAddOp1(v, OP_SequenceTest, pSort->iECursor); + } + VdbeCoverage(v); + sqlite3VdbeAddOp3(v, OP_Compare, regPrevKey, regBase, pSort->nOBSat); + pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex); + if( pParse->db->mallocFailed ) return; + pOp->p2 = nKey + nData; + pKI = pOp->p4.pKeyInfo; + memset(pKI->aSortOrder, 0, pKI->nField); /* Makes OP_Jump below testable */ + sqlite3VdbeChangeP4(v, -1, (char*)pKI, P4_KEYINFO); + testcase( pKI->nXField>2 ); + pOp->p4.pKeyInfo = keyInfoFromExprList(pParse, pSort->pOrderBy, nOBSat, + pKI->nXField-1); + addrJmp = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v); + pSort->labelBkOut = sqlite3VdbeMakeLabel(v); + pSort->regReturn = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut); + sqlite3VdbeAddOp1(v, OP_ResetSorter, pSort->iECursor); + if( iLimit ){ + sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, pSort->labelDone); + VdbeCoverage(v); + } + sqlite3VdbeJumpHere(v, addrFirst); + sqlite3ExprCodeMove(pParse, regBase, regPrevKey, pSort->nOBSat); + sqlite3VdbeJumpHere(v, addrJmp); + } + if( pSort->sortFlags & SORTFLAG_UseSorter ){ op = OP_SorterInsert; }else{ op = OP_IdxInsert; } - sqlite3VdbeAddOp2(v, op, pOrderBy->iECursor, regRecord); - sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3ReleaseTempRange(pParse, regBase, nExpr+2); - if( pSelect->iLimit ){ - int addr1, addr2; - int iLimit; - if( pSelect->iOffset ){ - iLimit = pSelect->iOffset+1; - }else{ - iLimit = pSelect->iLimit; + sqlite3VdbeAddOp4Int(v, op, pSort->iECursor, regRecord, + regBase+nOBSat, nBase-nOBSat); + if( iLimit ){ + int addr; + int r1 = 0; + /* Fill the sorter until it contains LIMIT+OFFSET entries. (The iLimit + ** register is initialized with value of LIMIT+OFFSET.) After the sorter + ** fills up, delete the least entry in the sorter after each insert. + ** Thus we never hold more than the LIMIT+OFFSET rows in memory at once */ + addr = sqlite3VdbeAddOp1(v, OP_IfNotZero, iLimit); VdbeCoverage(v); + sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor); + if( pSort->bOrderedInnerLoop ){ + r1 = ++pParse->nMem; + sqlite3VdbeAddOp3(v, OP_Column, pSort->iECursor, nExpr, r1); + VdbeComment((v, "seq")); } - addr1 = sqlite3VdbeAddOp1(v, OP_IfZero, iLimit); - sqlite3VdbeAddOp2(v, OP_AddImm, iLimit, -1); - addr2 = sqlite3VdbeAddOp0(v, OP_Goto); - sqlite3VdbeJumpHere(v, addr1); - sqlite3VdbeAddOp1(v, OP_Last, pOrderBy->iECursor); - sqlite3VdbeAddOp1(v, OP_Delete, pOrderBy->iECursor); - sqlite3VdbeJumpHere(v, addr2); + sqlite3VdbeAddOp1(v, OP_Delete, pSort->iECursor); + if( pSort->bOrderedInnerLoop ){ + /* If the inner loop is driven by an index such that values from + ** the same iteration of the inner loop are in sorted order, then + ** immediately jump to the next iteration of an inner loop if the + ** entry from the current iteration does not fit into the top + ** LIMIT+OFFSET entries of the sorter. */ + int iBrk = sqlite3VdbeCurrentAddr(v) + 2; + sqlite3VdbeAddOp3(v, OP_Eq, regBase+nExpr, iBrk, r1); + sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); + VdbeCoverage(v); + } + sqlite3VdbeJumpHere(v, addr); } } @@ -99964,13 +116443,9 @@ static void codeOffset( int iOffset, /* Register holding the offset counter */ int iContinue /* Jump here to skip the current record */ ){ - if( iOffset>0 && iContinue!=0 ){ - int addr; - sqlite3VdbeAddOp2(v, OP_AddImm, iOffset, -1); - addr = sqlite3VdbeAddOp1(v, OP_IfNeg, iOffset); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iContinue); - VdbeComment((v, "skip OFFSET records")); - sqlite3VdbeJumpHere(v, addr); + if( iOffset>0 ){ + sqlite3VdbeAddOp3(v, OP_IfPos, iOffset, iContinue, 1); VdbeCoverage(v); + VdbeComment((v, "OFFSET")); } } @@ -99995,49 +116470,13 @@ static void codeDistinct( v = pParse->pVdbe; r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, iMem, N); + sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, iMem, N); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_MakeRecord, iMem, N, r1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iTab, r1); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r1, iMem, N); + sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); sqlite3ReleaseTempReg(pParse, r1); } -#ifndef SQLITE_OMIT_SUBQUERY -/* -** Generate an error message when a SELECT is used within a subexpression -** (example: "a IN (SELECT * FROM table)") but it has more than 1 result -** column. We do this in a subroutine because the error used to occur -** in multiple places. (The error only occurs in one place now, but we -** retain the subroutine to minimize code disruption.) -*/ -static int checkForMultiColumnSelectError( - Parse *pParse, /* Parse context. */ - SelectDest *pDest, /* Destination of SELECT results */ - int nExpr /* Number of result columns returned by SELECT */ -){ - int eDest = pDest->eDest; - if( nExpr>1 && (eDest==SRT_Mem || eDest==SRT_Set) ){ - sqlite3ErrorMsg(pParse, "only a single result allowed for " - "a SELECT that is part of an expression"); - return 1; - }else{ - return 0; - } -} -#endif - -/* -** An instance of the following object is used to record information about -** how to process the DISTINCT keyword, to simplify passing that information -** into the selectInnerLoop() routine. -*/ -typedef struct DistinctCtx DistinctCtx; -struct DistinctCtx { - u8 isTnct; /* True if the DISTINCT keyword is present */ - u8 eTnctType; /* One of the WHERE_DISTINCT_* operators */ - int tabTnct; /* Ephemeral table used for DISTINCT processing */ - int addrTnct; /* Address of OP_OpenEphemeral opcode for tabTnct */ -}; - /* ** This routine generates the code for the inside of the inner loop ** of a SELECT. @@ -100045,14 +116484,14 @@ struct DistinctCtx { ** If srcTab is negative, then the pEList expressions ** are evaluated in order to get the data for this row. If srcTab is ** zero or more, then data is pulled from srcTab and pEList is used only -** to get number columns and the datatype for each column. +** to get the number of columns and the collation sequence for each column. */ static void selectInnerLoop( Parse *pParse, /* The parser context */ Select *p, /* The complete select statement being coded */ ExprList *pEList, /* List of values being extracted */ int srcTab, /* Pull data from this table */ - ExprList *pOrderBy, /* If not NULL, sort results using this key */ + SortCtx *pSort, /* If not NULL, info on how to process ORDER BY */ DistinctCtx *pDistinct, /* If not NULL, info on how to process DISTINCT */ SelectDest *pDest, /* How to dispose of the results */ int iContinue, /* Jump here to continue with next row */ @@ -100060,30 +116499,51 @@ static void selectInnerLoop( ){ Vdbe *v = pParse->pVdbe; int i; - int hasDistinct; /* True if the DISTINCT keyword is present */ - int regResult; /* Start of memory holding result set */ + int hasDistinct; /* True if the DISTINCT keyword is present */ int eDest = pDest->eDest; /* How to dispose of results */ int iParm = pDest->iSDParm; /* First argument to disposal method */ int nResultCol; /* Number of result columns */ + int nPrefixReg = 0; /* Number of extra registers before regResult */ + + /* Usually, regResult is the first cell in an array of memory cells + ** containing the current result row. In this case regOrig is set to the + ** same value. However, if the results are being sent to the sorter, the + ** values for any expressions that are also part of the sort-key are omitted + ** from this array. In this case regOrig is set to zero. */ + int regResult; /* Start of memory holding current results */ + int regOrig; /* Start of memory holding full result (or 0) */ assert( v ); assert( pEList!=0 ); hasDistinct = pDistinct ? pDistinct->eTnctType : WHERE_DISTINCT_NOOP; - if( pOrderBy==0 && !hasDistinct ){ + if( pSort && pSort->pOrderBy==0 ) pSort = 0; + if( pSort==0 && !hasDistinct ){ + assert( iContinue!=0 ); codeOffset(v, p->iOffset, iContinue); } /* Pull the requested columns. */ nResultCol = pEList->nExpr; + if( pDest->iSdst==0 ){ + if( pSort ){ + nPrefixReg = pSort->pOrderBy->nExpr; + if( !(pSort->sortFlags & SORTFLAG_UseSorter) ) nPrefixReg++; + pParse->nMem += nPrefixReg; + } pDest->iSdst = pParse->nMem+1; - pDest->nSdst = nResultCol; pParse->nMem += nResultCol; - }else{ - assert( pDest->nSdst==nResultCol ); + }else if( pDest->iSdst+nResultCol > pParse->nMem ){ + /* This is an error condition that can result, for example, when a SELECT + ** on the right-hand side of an INSERT contains more result columns than + ** there are columns in the table on the left. The error will be caught + ** and reported later. But we need to make sure enough memory is allocated + ** to avoid other spurious errors in the meantime. */ + pParse->nMem += nResultCol; } - regResult = pDest->iSdst; + pDest->nSdst = nResultCol; + regOrig = regResult = pDest->iSdst; if( srcTab>=0 ){ for(i=0; ipOrderBy), set the associated + ** iOrderByCol value to one more than the index of the ORDER BY + ** expression within the sort-key that pushOntoSorter() will generate. + ** This allows the pEList field to be omitted from the sorted record, + ** saving space and CPU cycles. */ + ecelFlags |= (SQLITE_ECEL_OMITREF|SQLITE_ECEL_REF); + for(i=pSort->nOBSat; ipOrderBy->nExpr; i++){ + int j; + if( (j = pSort->pOrderBy->a[i].u.x.iOrderByCol)>0 ){ + pEList->a[j-1].u.x.iOrderByCol = i+1-pSort->nOBSat; + } + } + regOrig = 0; + assert( eDest==SRT_Set || eDest==SRT_Mem + || eDest==SRT_Coroutine || eDest==SRT_Output ); + } + nResultCol = sqlite3ExprCodeExprList(pParse,pEList,regResult,0,ecelFlags); } /* If the DISTINCT keyword was present on the SELECT statement @@ -100129,13 +116612,15 @@ static void selectInnerLoop( CollSeq *pColl = sqlite3ExprCollSeq(pParse, pEList->a[i].pExpr); if( idb->mallocFailed ); sqlite3VdbeAddOp3(v, OP_Copy, regResult, regPrev, nResultCol-1); break; } @@ -100147,11 +116632,12 @@ static void selectInnerLoop( default: { assert( pDistinct->eTnctType==WHERE_DISTINCT_UNORDERED ); - codeDistinct(pParse, pDistinct->tabTnct, iContinue, nResultCol, regResult); + codeDistinct(pParse, pDistinct->tabTnct, iContinue, nResultCol, + regResult); break; } } - if( pOrderBy==0 ){ + if( pSort==0 ){ codeOffset(v, p->iOffset, iContinue); } } @@ -100165,7 +116651,7 @@ static void selectInnerLoop( int r1; r1 = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, r1); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regResult, nResultCol); sqlite3ReleaseTempReg(pParse, r1); break; } @@ -100182,28 +116668,32 @@ static void selectInnerLoop( /* Store the result as data using a unique key. */ - case SRT_DistTable: + case SRT_Fifo: + case SRT_DistFifo: case SRT_Table: case SRT_EphemTab: { - int r1 = sqlite3GetTempReg(pParse); + int r1 = sqlite3GetTempRange(pParse, nPrefixReg+1); testcase( eDest==SRT_Table ); testcase( eDest==SRT_EphemTab ); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r1); + testcase( eDest==SRT_Fifo ); + testcase( eDest==SRT_DistFifo ); + sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r1+nPrefixReg); #ifndef SQLITE_OMIT_CTE - if( eDest==SRT_DistTable ){ - /* If the destination is DistTable, then cursor (iParm+1) is open + if( eDest==SRT_DistFifo ){ + /* If the destination is DistFifo, then cursor (iParm+1) is open ** on an ephemeral index. If the current row is already present ** in the index, do not write it to the output. If not, add the ** current row to the index and proceed with writing it to the ** output table as well. */ int addr = sqlite3VdbeCurrentAddr(v) + 4; sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, addr, r1, 0); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm+1, r1); - assert( pOrderBy==0 ); + VdbeCoverage(v); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm+1, r1,regResult,nResultCol); + assert( pSort==0 ); } #endif - if( pOrderBy ){ - pushOntoSorter(pParse, pOrderBy, p, r1); + if( pSort ){ + pushOntoSorter(pParse, pSort, p, r1+nPrefixReg,regResult,1,nPrefixReg); }else{ int r2 = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, r2); @@ -100211,7 +116701,7 @@ static void selectInnerLoop( sqlite3VdbeChangeP5(v, OPFLAG_APPEND); sqlite3ReleaseTempReg(pParse, r2); } - sqlite3ReleaseTempReg(pParse, r1); + sqlite3ReleaseTempRange(pParse, r1, nPrefixReg+1); break; } @@ -100221,20 +116711,20 @@ static void selectInnerLoop( ** item into the set table with bogus data. */ case SRT_Set: { - assert( nResultCol==1 ); - pDest->affSdst = - sqlite3CompareAffinity(pEList->a[0].pExpr, pDest->affSdst); - if( pOrderBy ){ + if( pSort ){ /* At first glance you would think we could optimize out the ** ORDER BY in this case since the order of entries in the set ** does not matter. But there might be a LIMIT clause, in which ** case the order does matter */ - pushOntoSorter(pParse, pOrderBy, p, regResult); + pushOntoSorter( + pParse, pSort, p, regResult, regOrig, nResultCol, nPrefixReg); }else{ int r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult,1,r1, &pDest->affSdst, 1); - sqlite3ExprCacheAffinityChange(pParse, regResult, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, r1); + assert( sqlite3Strlen30(pDest->zAffSdst)==nResultCol ); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult, nResultCol, + r1, pDest->zAffSdst, nResultCol); + sqlite3ExprCacheAffinityChange(pParse, regResult, nResultCol); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regResult, nResultCol); sqlite3ReleaseTempReg(pParse, r1); } break; @@ -100249,34 +116739,30 @@ static void selectInnerLoop( } /* If this is a scalar select that is part of an expression, then - ** store the results in the appropriate memory cell and break out - ** of the scan loop. + ** store the results in the appropriate memory cell or array of + ** memory cells and break out of the scan loop. */ case SRT_Mem: { - assert( nResultCol==1 ); - if( pOrderBy ){ - pushOntoSorter(pParse, pOrderBy, p, regResult); + if( pSort ){ + assert( nResultCol<=pDest->nSdst ); + pushOntoSorter( + pParse, pSort, p, regResult, regOrig, nResultCol, nPrefixReg); }else{ - sqlite3ExprCodeMove(pParse, regResult, iParm, 1); + assert( nResultCol==pDest->nSdst ); + assert( regResult==iParm ); /* The LIMIT clause will jump out of the loop for us */ } break; } #endif /* #ifndef SQLITE_OMIT_SUBQUERY */ - /* Send the data to the callback function or to a subroutine. In the - ** case of a subroutine, the subroutine itself is responsible for - ** popping the data from the stack. - */ - case SRT_Coroutine: - case SRT_Output: { + case SRT_Coroutine: /* Send data to a co-routine */ + case SRT_Output: { /* Return the results */ testcase( eDest==SRT_Coroutine ); testcase( eDest==SRT_Output ); - if( pOrderBy ){ - int r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r1); - pushOntoSorter(pParse, pOrderBy, p, r1); - sqlite3ReleaseTempReg(pParse, r1); + if( pSort ){ + pushOntoSorter(pParse, pSort, p, regResult, regOrig, nResultCol, + nPrefixReg); }else if( eDest==SRT_Coroutine ){ sqlite3VdbeAddOp1(v, OP_Yield, pDest->iSDParm); }else{ @@ -100305,13 +116791,16 @@ static void selectInnerLoop( r1 = sqlite3GetTempReg(pParse); r2 = sqlite3GetTempRange(pParse, nKey+2); r3 = r2+nKey+1; - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r3); if( eDest==SRT_DistQueue ){ /* If the destination is DistQueue, then cursor (iParm+1) is open ** on a second ephemeral index that holds all values every previously - ** added to the queue. Only add this new value if it has never before - ** been added */ - addrTest = sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, 0, r3, 0); + ** added to the queue. */ + addrTest = sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, 0, + regResult, nResultCol); + VdbeCoverage(v); + } + sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nResultCol, r3); + if( eDest==SRT_DistQueue ){ sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm+1, r3); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); } @@ -100322,7 +116811,7 @@ static void selectInnerLoop( } sqlite3VdbeAddOp2(v, OP_Sequence, iParm, r2+nKey); sqlite3VdbeAddOp3(v, OP_MakeRecord, r2, nKey+2, r1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, r1); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, r2, nKey+2); if( addrTest ) sqlite3VdbeJumpHere(v, addrTest); sqlite3ReleaseTempReg(pParse, r1); sqlite3ReleaseTempRange(pParse, r2, nKey+2); @@ -100349,8 +116838,8 @@ static void selectInnerLoop( ** there is a sorter, in which case the sorter has already limited ** the output for us. */ - if( pOrderBy==0 && p->iLimit ){ - sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); + if( pSort==0 && p->iLimit ){ + sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v); } } @@ -100359,8 +116848,8 @@ static void selectInnerLoop( ** X extra columns. */ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){ - KeyInfo *p = sqlite3DbMallocZero(0, - sizeof(KeyInfo) + (N+X)*(sizeof(CollSeq*)+1)); + int nExtra = (N+X)*(sizeof(CollSeq*)+1); + KeyInfo *p = sqlite3DbMallocRawNN(db, sizeof(KeyInfo) + nExtra); if( p ){ p->aSortOrder = (u8*)&p->aColl[N+X]; p->nField = (u16)N; @@ -100368,8 +116857,9 @@ SQLITE_PRIVATE KeyInfo *sqlite3KeyInfoAlloc(sqlite3 *db, int N, int X){ p->enc = ENC(db); p->db = db; p->nRef = 1; + memset(&p[1], 0, nExtra); }else{ - db->mallocFailed = 1; + sqlite3OomFault(db); } return p; } @@ -100381,7 +116871,7 @@ SQLITE_PRIVATE void sqlite3KeyInfoUnref(KeyInfo *p){ if( p ){ assert( p->nRef>0 ); p->nRef--; - if( p->nRef==0 ) sqlite3DbFree(0, p); + if( p->nRef==0 ) sqlite3DbFree(p->db, p); } } @@ -100416,11 +116906,16 @@ SQLITE_PRIVATE int sqlite3KeyInfoIsWriteable(KeyInfo *p){ return p->nRef==1; } ** then the KeyInfo structure is appropriate for initializing a virtual ** index to implement a DISTINCT test. ** -** Space to hold the KeyInfo structure is obtain from malloc. The calling +** Space to hold the KeyInfo structure is obtained from malloc. The calling ** function is responsible for seeing that this structure is eventually ** freed. */ -static KeyInfo *keyInfoFromExprList(Parse *pParse, ExprList *pList, int nExtra){ +static KeyInfo *keyInfoFromExprList( + Parse *pParse, /* Parsing context */ + ExprList *pList, /* Form the KeyInfo object from this ExprList */ + int iStart, /* Begin with this column of pList */ + int nExtra /* Add this many extra columns to the end */ +){ int nExpr; KeyInfo *pInfo; struct ExprList_item *pItem; @@ -100428,21 +116923,20 @@ static KeyInfo *keyInfoFromExprList(Parse *pParse, ExprList *pList, int nExtra){ int i; nExpr = pList->nExpr; - pInfo = sqlite3KeyInfoAlloc(db, nExpr+nExtra, 1); + pInfo = sqlite3KeyInfoAlloc(db, nExpr-iStart, nExtra+1); if( pInfo ){ assert( sqlite3KeyInfoIsWriteable(pInfo) ); - for(i=0, pItem=pList->a; ia+iStart; ipExpr); if( !pColl ) pColl = db->pDfltColl; - pInfo->aColl[i] = pColl; - pInfo->aSortOrder[i] = pItem->sortOrder; + pInfo->aColl[i-iStart] = pColl; + pInfo->aSortOrder[i-iStart] = pItem->sortOrder; } } return pInfo; } -#ifndef SQLITE_OMIT_COMPOUND_SELECT /* ** Name of the connection operator, used for error messages. */ @@ -100456,7 +116950,6 @@ static const char *selectOpName(int id){ } return z; } -#endif /* SQLITE_OMIT_COMPOUND_SELECT */ #ifndef SQLITE_OMIT_EXPLAIN /* @@ -100538,51 +117031,78 @@ static void explainComposite( static void generateSortTail( Parse *pParse, /* Parsing context */ Select *p, /* The SELECT statement */ - Vdbe *v, /* Generate code into this VDBE */ + SortCtx *pSort, /* Information on the ORDER BY clause */ int nColumn, /* Number of columns of data */ SelectDest *pDest /* Write the sorted results here */ ){ - int addrBreak = sqlite3VdbeMakeLabel(v); /* Jump here to exit loop */ + Vdbe *v = pParse->pVdbe; /* The prepared statement */ + int addrBreak = pSort->labelDone; /* Jump here to exit loop */ int addrContinue = sqlite3VdbeMakeLabel(v); /* Jump here for next cycle */ int addr; + int addrOnce = 0; int iTab; - int pseudoTab = 0; - ExprList *pOrderBy = p->pOrderBy; - + ExprList *pOrderBy = pSort->pOrderBy; int eDest = pDest->eDest; int iParm = pDest->iSDParm; - int regRow; int regRowid; + int iCol; + int nKey; + int iSortTab; /* Sorter cursor to read from */ + int nSortData; /* Trailing values to read from sorter */ + int i; + int bSeq; /* True if sorter record includes seq. no. */ + struct ExprList_item *aOutEx = p->pEList->a; - iTab = pOrderBy->iECursor; - regRow = sqlite3GetTempReg(pParse); - if( eDest==SRT_Output || eDest==SRT_Coroutine ){ - pseudoTab = pParse->nTab++; - sqlite3VdbeAddOp3(v, OP_OpenPseudo, pseudoTab, regRow, nColumn); + assert( addrBreak<0 ); + if( pSort->labelBkOut ){ + sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut); + sqlite3VdbeGoto(v, addrBreak); + sqlite3VdbeResolveLabel(v, pSort->labelBkOut); + } + iTab = pSort->iECursor; + if( eDest==SRT_Output || eDest==SRT_Coroutine || eDest==SRT_Mem ){ regRowid = 0; + regRow = pDest->iSdst; + nSortData = nColumn; }else{ regRowid = sqlite3GetTempReg(pParse); + regRow = sqlite3GetTempRange(pParse, nColumn); + nSortData = nColumn; } - if( p->selFlags & SF_UseSorter ){ + nKey = pOrderBy->nExpr - pSort->nOBSat; + if( pSort->sortFlags & SORTFLAG_UseSorter ){ int regSortOut = ++pParse->nMem; - int ptab2 = pParse->nTab++; - sqlite3VdbeAddOp3(v, OP_OpenPseudo, ptab2, regSortOut, pOrderBy->nExpr+2); + iSortTab = pParse->nTab++; + if( pSort->labelBkOut ){ + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + } + sqlite3VdbeAddOp3(v, OP_OpenPseudo, iSortTab, regSortOut, nKey+1+nSortData); + if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce); addr = 1 + sqlite3VdbeAddOp2(v, OP_SorterSort, iTab, addrBreak); + VdbeCoverage(v); codeOffset(v, p->iOffset, addrContinue); - sqlite3VdbeAddOp2(v, OP_SorterData, iTab, regSortOut); - sqlite3VdbeAddOp3(v, OP_Column, ptab2, pOrderBy->nExpr+1, regRow); - sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); + sqlite3VdbeAddOp3(v, OP_SorterData, iTab, regSortOut, iSortTab); + bSeq = 0; }else{ - addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak); + addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak); VdbeCoverage(v); codeOffset(v, p->iOffset, addrContinue); - sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr+1, regRow); + iSortTab = iTab; + bSeq = 1; + } + for(i=0, iCol=nKey+bSeq; iaffSdst, 1); - sqlite3ExprCacheAffinityChange(pParse, regRow, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, regRowid); + assert( nColumn==sqlite3Strlen30(pDest->zAffSdst) ); + sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, nColumn, regRowid, + pDest->zAffSdst, nColumn); + sqlite3ExprCacheAffinityChange(pParse, regRow, nColumn); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, regRowid, regRow, nColumn); break; } case SRT_Mem: { - assert( nColumn==1 ); - sqlite3ExprCodeMove(pParse, regRow, iParm, 1); /* The LIMIT clause will terminate the loop for us */ break; } #endif default: { - int i; assert( eDest==SRT_Output || eDest==SRT_Coroutine ); testcase( eDest==SRT_Output ); testcase( eDest==SRT_Coroutine ); - for(i=0; iiSdst+i ); - sqlite3VdbeAddOp3(v, OP_Column, pseudoTab, i, pDest->iSdst+i); - if( i==0 ){ - sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); - } - } if( eDest==SRT_Output ){ sqlite3VdbeAddOp2(v, OP_ResultRow, pDest->iSdst, nColumn); sqlite3ExprCacheAffinityChange(pParse, pDest->iSdst, nColumn); @@ -100625,21 +117135,24 @@ static void generateSortTail( break; } } - sqlite3ReleaseTempReg(pParse, regRow); - sqlite3ReleaseTempReg(pParse, regRowid); - + if( regRowid ){ + if( eDest==SRT_Set ){ + sqlite3ReleaseTempRange(pParse, regRow, nColumn); + }else{ + sqlite3ReleaseTempReg(pParse, regRow); + } + sqlite3ReleaseTempReg(pParse, regRowid); + } /* The bottom of the loop */ sqlite3VdbeResolveLabel(v, addrContinue); - if( p->selFlags & SF_UseSorter ){ - sqlite3VdbeAddOp2(v, OP_SorterNext, iTab, addr); + if( pSort->sortFlags & SORTFLAG_UseSorter ){ + sqlite3VdbeAddOp2(v, OP_SorterNext, iTab, addr); VdbeCoverage(v); }else{ - sqlite3VdbeAddOp2(v, OP_Next, iTab, addr); + sqlite3VdbeAddOp2(v, OP_Next, iTab, addr); VdbeCoverage(v); } + if( pSort->regReturn ) sqlite3VdbeAddOp1(v, OP_Return, pSort->regReturn); sqlite3VdbeResolveLabel(v, addrBreak); - if( eDest==SRT_Output || eDest==SRT_Coroutine ){ - sqlite3VdbeAddOp2(v, OP_Close, pseudoTab, 0); - } } /* @@ -100668,30 +117181,30 @@ static void generateSortTail( */ #ifdef SQLITE_ENABLE_COLUMN_METADATA # define columnType(A,B,C,D,E,F) columnTypeImpl(A,B,C,D,E,F) +#else /* if !defined(SQLITE_ENABLE_COLUMN_METADATA) */ +# define columnType(A,B,C,D,E,F) columnTypeImpl(A,B,F) +#endif static const char *columnTypeImpl( NameContext *pNC, Expr *pExpr, +#ifdef SQLITE_ENABLE_COLUMN_METADATA const char **pzOrigDb, const char **pzOrigTab, const char **pzOrigCol, +#endif u8 *pEstWidth ){ - char const *zOrigDb = 0; - char const *zOrigTab = 0; - char const *zOrigCol = 0; -#else /* if !defined(SQLITE_ENABLE_COLUMN_METADATA) */ -# define columnType(A,B,C,D,E,F) columnTypeImpl(A,B,F) -static const char *columnTypeImpl( - NameContext *pNC, - Expr *pExpr, - u8 *pEstWidth -){ -#endif /* !defined(SQLITE_ENABLE_COLUMN_METADATA) */ char const *zType = 0; int j; u8 estWidth = 1; +#ifdef SQLITE_ENABLE_COLUMN_METADATA + char const *zOrigDb = 0; + char const *zOrigTab = 0; + char const *zOrigCol = 0; +#endif - if( NEVER(pExpr==0) || pNC->pSrcList==0 ) return 0; + assert( pExpr!=0 ); + assert( pNC->pSrcList!=0 ); switch( pExpr->op ){ case TK_AGG_COLUMN: case TK_COLUMN: { @@ -100746,6 +117259,9 @@ static const char *columnTypeImpl( /* If iCol is less than zero, then the expression requests the ** rowid of the sub-select or view. This expression is legal (see ** test case misc2.2.2) - it always evaluates to NULL. + ** + ** The ALWAYS() is because iCol>=pS->pEList->nExpr will have been + ** caught already by name resolution. */ NameContext sNC; Expr *p = pS->pEList->a[iCol].pExpr; @@ -100764,20 +117280,20 @@ static const char *columnTypeImpl( zType = "INTEGER"; zOrigCol = "rowid"; }else{ - zType = pTab->aCol[iCol].zType; zOrigCol = pTab->aCol[iCol].zName; + zType = sqlite3ColumnType(&pTab->aCol[iCol],0); estWidth = pTab->aCol[iCol].szEst; } zOrigTab = pTab->zName; if( pNC->pParse ){ int iDb = sqlite3SchemaToIndex(pNC->pParse->db, pTab->pSchema); - zOrigDb = pNC->pParse->db->aDb[iDb].zName; + zOrigDb = pNC->pParse->db->aDb[iDb].zDbSName; } #else if( iCol<0 ){ zType = "INTEGER"; }else{ - zType = pTab->aCol[iCol].zType; + zType = sqlite3ColumnType(&pTab->aCol[iCol],0); estWidth = pTab->aCol[iCol].szEst; } #endif @@ -100876,7 +117392,9 @@ static void generateColumnNames( } #endif - if( pParse->colNamesSet || NEVER(v==0) || db->mallocFailed ) return; + if( pParse->colNamesSet || db->mallocFailed ) return; + assert( v!=0 ); + assert( pTabList!=0 ); pParse->colNamesSet = 1; fullNames = (db->flags & SQLITE_FullColNames)!=0; shortNames = (db->flags & SQLITE_ShortColNames)!=0; @@ -100888,7 +117406,7 @@ static void generateColumnNames( if( pEList->a[i].zName ){ char *zName = pEList->a[i].zName; sqlite3VdbeSetColName(v, i, COLNAME_NAME, zName, SQLITE_TRANSIENT); - }else if( (p->op==TK_COLUMN || p->op==TK_AGG_COLUMN) && pTabList ){ + }else if( p->op==TK_COLUMN || p->op==TK_AGG_COLUMN ){ Table *pTab; char *zCol; int iCol = p->iColumn; @@ -100924,7 +117442,7 @@ static void generateColumnNames( } /* -** Given a an expression list (which is really the list of expressions +** Given an expression list (which is really the list of expressions ** that form the result set of a SELECT statement) compute appropriate ** column names for a table that would hold the expression list. ** @@ -100936,7 +117454,7 @@ static void generateColumnNames( ** Return SQLITE_OK on success. If a memory allocation error occurs, ** store NULL in *paCol and 0 in *pnCol and return SQLITE_NOMEM. */ -static int selectColumnsFromExprList( +SQLITE_PRIVATE int sqlite3ColumnsFromExprList( Parse *pParse, /* Parsing context */ ExprList *pEList, /* Expr list from which to derive column names */ i16 *pnCol, /* Write the number of columns here */ @@ -100944,13 +117462,15 @@ static int selectColumnsFromExprList( ){ sqlite3 *db = pParse->db; /* Database connection */ int i, j; /* Loop counters */ - int cnt; /* Index added to make the name unique */ + u32 cnt; /* Index added to make the name unique */ Column *aCol, *pCol; /* For looping over result columns */ int nCol; /* Number of columns in the result set */ Expr *p; /* Expression for a single result column */ char *zName; /* Column name */ int nName; /* Size of name in zName[] */ + Hash ht; /* Hash table of column names */ + sqlite3HashInit(&ht); if( pEList ){ nCol = pEList->nExpr; aCol = sqlite3DbMallocZero(db, sizeof(aCol[0])*nCol); @@ -100959,16 +117479,16 @@ static int selectColumnsFromExprList( nCol = 0; aCol = 0; } + assert( nCol==(i16)nCol ); *pnCol = nCol; *paCol = aCol; - for(i=0, pCol=aCol; imallocFailed; i++, pCol++){ /* Get an appropriate name for the column */ p = sqlite3ExprSkipCollate(pEList->a[i].pExpr); if( (zName = pEList->a[i].zName)!=0 ){ /* If the column contains an "AS " phrase, use as the name */ - zName = sqlite3DbStrDup(db, zName); }else{ Expr *pColExpr = p; /* The expression that is the result column name */ Table *pTab; /* Table associated with this expression */ @@ -100981,41 +117501,37 @@ static int selectColumnsFromExprList( int iCol = pColExpr->iColumn; pTab = pColExpr->pTab; if( iCol<0 ) iCol = pTab->iPKey; - zName = sqlite3MPrintf(db, "%s", - iCol>=0 ? pTab->aCol[iCol].zName : "rowid"); + zName = iCol>=0 ? pTab->aCol[iCol].zName : "rowid"; }else if( pColExpr->op==TK_ID ){ assert( !ExprHasProperty(pColExpr, EP_IntValue) ); - zName = sqlite3MPrintf(db, "%s", pColExpr->u.zToken); + zName = pColExpr->u.zToken; }else{ /* Use the original text of the column expression as its name */ - zName = sqlite3MPrintf(db, "%s", pEList->a[i].zSpan); + zName = pEList->a[i].zSpan; } } - if( db->mallocFailed ){ - sqlite3DbFree(db, zName); - break; - } + zName = sqlite3MPrintf(db, "%s", zName); /* Make sure the column name is unique. If the name is not unique, - ** append a integer to the name so that it becomes unique. + ** append an integer to the name so that it becomes unique. */ - nName = sqlite3Strlen30(zName); - for(j=cnt=0; j1 && sqlite3Isdigit(zName[k]); k--){} - if( zName[k]==':' ) nName = k; - zName[nName] = 0; - zNewName = sqlite3MPrintf(db, "%s:%d", zName, ++cnt); - sqlite3DbFree(db, zName); - zName = zNewName; - j = -1; - if( zName==0 ) break; + cnt = 0; + while( zName && sqlite3HashFind(&ht, zName)!=0 ){ + nName = sqlite3Strlen30(zName); + if( nName>0 ){ + for(j=nName-1; j>0 && sqlite3Isdigit(zName[j]); j--){} + if( zName[j]==':' ) nName = j; } + zName = sqlite3MPrintf(db, "%.*z:%u", nName, zName, ++cnt); + if( cnt>3 ) sqlite3_randomness(sizeof(cnt), &cnt); } pCol->zName = zName; + sqlite3ColumnPropertiesFromName(0, pCol); + if( zName && sqlite3HashInsert(&ht, zName, pCol)==pCol ){ + sqlite3OomFault(db); + } } + sqlite3HashClear(&ht); if( db->mallocFailed ){ for(j=0; jpSrc; a = pSelect->pEList->a; for(i=0, pCol=pTab->aCol; inCol; i++, pCol++){ + const char *zType; + int n, m; p = a[i].pExpr; - pCol->zType = sqlite3DbStrDup(db, columnType(&sNC, p,0,0,0, &pCol->szEst)); + zType = columnType(&sNC, p, 0, 0, 0, &pCol->szEst); szAll += pCol->szEst; pCol->affinity = sqlite3ExprAffinity(p); - if( pCol->affinity==0 ) pCol->affinity = SQLITE_AFF_NONE; + if( zType && (m = sqlite3Strlen30(zType))>0 ){ + n = sqlite3Strlen30(pCol->zName); + pCol->zName = sqlite3DbReallocOrFree(db, pCol->zName, n+m+2); + if( pCol->zName ){ + memcpy(&pCol->zName[n+1], zType, m+1); + pCol->colFlags |= COLFLAG_HASTYPE; + } + } + if( pCol->affinity==0 ) pCol->affinity = SQLITE_AFF_BLOB; pColl = sqlite3ExprCollSeq(pParse, p); - if( pColl ){ + if( pColl && pCol->zColl==0 ){ pCol->zColl = sqlite3DbStrDup(db, pColl->zName); } } @@ -101096,12 +117622,12 @@ SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){ } /* The sqlite3ResultSetOfSelect() is only used n contexts where lookaside ** is disabled */ - assert( db->lookaside.bEnabled==0 ); - pTab->nRef = 1; + assert( db->lookaside.bDisable ); + pTab->nTabRef = 1; pTab->zName = 0; - pTab->nRowEst = 1048576; - selectColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); - selectAddColumnTypeAndCollation(pParse, pTab, pSelect); + pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); + sqlite3ColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); + sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSelect); pTab->iPKey = -1; if( db->mallocFailed ){ sqlite3DeleteTable(db, pTab); @@ -101114,18 +117640,20 @@ SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){ ** Get a VDBE for the given parser context. Create a new one if necessary. ** If an error occurs, return NULL and leave a message in pParse. */ -SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse *pParse){ - Vdbe *v = pParse->pVdbe; - if( v==0 ){ - v = pParse->pVdbe = sqlite3VdbeCreate(pParse); -#ifndef SQLITE_OMIT_TRACE - if( v ){ - sqlite3VdbeAddOp0(v, OP_Trace); - } -#endif +static SQLITE_NOINLINE Vdbe *allocVdbe(Parse *pParse){ + Vdbe *v = pParse->pVdbe = sqlite3VdbeCreate(pParse); + if( v ) sqlite3VdbeAddOp2(v, OP_Init, 0, 1); + if( pParse->pToplevel==0 + && OptimizationEnabled(pParse->db,SQLITE_FactorOutConst) + ){ + pParse->okConstFactor = 1; } return v; } +SQLITE_PRIVATE Vdbe *sqlite3GetVdbe(Parse *pParse){ + Vdbe *v = pParse->pVdbe; + return v ? v : allocVdbe(pParse); +} /* @@ -101155,7 +117683,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){ Vdbe *v = 0; int iLimit = 0; int iOffset; - int addr1, n; + int n; if( p->iLimit ) return; /* @@ -101174,30 +117702,25 @@ static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){ sqlite3VdbeAddOp2(v, OP_Integer, n, iLimit); VdbeComment((v, "LIMIT counter")); if( n==0 ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, iBreak); - }else if( n>=0 && p->nSelectRow>(u64)n ){ - p->nSelectRow = n; + sqlite3VdbeGoto(v, iBreak); + }else if( n>=0 && p->nSelectRow>sqlite3LogEst((u64)n) ){ + p->nSelectRow = sqlite3LogEst((u64)n); + p->selFlags |= SF_FixedLimit; } }else{ sqlite3ExprCode(pParse, p->pLimit, iLimit); - sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); + sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v); VdbeComment((v, "LIMIT counter")); - sqlite3VdbeAddOp2(v, OP_IfZero, iLimit, iBreak); + sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, iBreak); VdbeCoverage(v); } if( p->pOffset ){ p->iOffset = iOffset = ++pParse->nMem; pParse->nMem++; /* Allocate an extra register for limit+offset */ sqlite3ExprCode(pParse, p->pOffset, iOffset); - sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); + sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v); VdbeComment((v, "OFFSET counter")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iOffset); - sqlite3VdbeAddOp2(v, OP_Integer, 0, iOffset); - sqlite3VdbeJumpHere(v, addr1); - sqlite3VdbeAddOp3(v, OP_Add, iLimit, iOffset, iOffset+1); + sqlite3VdbeAddOp3(v, OP_OffsetLimit, iLimit, iOffset+1, iOffset); VdbeComment((v, "LIMIT+OFFSET")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iLimit); - sqlite3VdbeAddOp2(v, OP_Integer, -1, iOffset+1); - sqlite3VdbeJumpHere(v, addr1); } } } @@ -101219,7 +117742,10 @@ static CollSeq *multiSelectCollSeq(Parse *pParse, Select *p, int iCol){ pRet = 0; } assert( iCol>=0 ); - if( pRet==0 && iColpEList->nExpr ){ + /* iCol must be less than p->pEList->nExpr. Otherwise an error would + ** have been thrown during name resolution and we would not have gotten + ** this far */ + if( pRet==0 && ALWAYS(iColpEList->nExpr) ){ pRet = sqlite3ExprCollSeq(pParse, p->pEList->a[iCol].pExpr); } return pRet; @@ -101274,7 +117800,7 @@ static KeyInfo *multiSelectOrderByKeyInfo(Parse *pParse, Select *p, int nExtra){ ** ** ** There is exactly one reference to the recursive-table in the FROM clause -** of recursive-query, marked with the SrcList->a[].isRecursive flag. +** of recursive-query, marked with the SrcList->a[].fg.isRecursive flag. ** ** The setup-query runs once to generate an initial set of rows that go ** into a Queue table. Rows are extracted from the Queue table one by @@ -101315,7 +117841,7 @@ static void generateWithRecursiveQuery( int regCurrent; /* Register holding Current table */ int iQueue; /* The Queue table */ int iDistinct = 0; /* To ensure unique results if UNION */ - int eDest = SRT_Table; /* How to write to Queue */ + int eDest = SRT_Fifo; /* How to write to Queue */ SelectDest destQueue; /* SelectDest targetting the Queue table */ int i; /* Loop counter */ int rc; /* Result code */ @@ -101328,6 +117854,7 @@ static void generateWithRecursiveQuery( /* Process the LIMIT and OFFSET clauses, if they exist */ addrBreak = sqlite3VdbeMakeLabel(v); + p->nSelectRow = 320; /* 4 billion rows */ computeLimitRegisters(pParse, p, addrBreak); pLimit = p->pLimit; pOffset = p->pOffset; @@ -101339,7 +117866,7 @@ static void generateWithRecursiveQuery( /* Locate the cursor number of the Current table */ for(i=0; ALWAYS(inSrc); i++){ - if( pSrc->a[i].isRecursive ){ + if( pSrc->a[i].fg.isRecursive ){ iCurrent = pSrc->a[i].iCursor; break; } @@ -101347,13 +117874,13 @@ static void generateWithRecursiveQuery( /* Allocate cursors numbers for Queue and Distinct. The cursor number for ** the Distinct table must be exactly one greater than Queue in order - ** for the SRT_DistTable and SRT_DistQueue destinations to work. */ + ** for the SRT_DistFifo and SRT_DistQueue destinations to work. */ iQueue = pParse->nTab++; if( p->op==TK_UNION ){ - eDest = pOrderBy ? SRT_DistQueue : SRT_DistTable; + eDest = pOrderBy ? SRT_DistQueue : SRT_DistFifo; iDistinct = pParse->nTab++; }else{ - eDest = pOrderBy ? SRT_Queue : SRT_Table; + eDest = pOrderBy ? SRT_Queue : SRT_Fifo; } sqlite3SelectDestInit(&destQueue, eDest, iQueue); @@ -101378,11 +117905,13 @@ static void generateWithRecursiveQuery( p->pOrderBy = 0; /* Store the results of the setup-query in Queue. */ + pSetup->pNext = 0; rc = sqlite3Select(pParse, pSetup, &destQueue); + pSetup->pNext = p; if( rc ) goto end_of_recursive_query; /* Find the next row in the Queue and output that row */ - addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, iQueue, addrBreak); + addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, iQueue, addrBreak); VdbeCoverage(v); /* Transfer the next row in Queue over to Current */ sqlite3VdbeAddOp1(v, OP_NullRow, iCurrent); /* To reset column cache */ @@ -101398,22 +117927,30 @@ static void generateWithRecursiveQuery( codeOffset(v, regOffset, addrCont); selectInnerLoop(pParse, p, p->pEList, iCurrent, 0, 0, pDest, addrCont, addrBreak); - if( regLimit ) sqlite3VdbeAddOp3(v, OP_IfZero, regLimit, addrBreak, -1); + if( regLimit ){ + sqlite3VdbeAddOp2(v, OP_DecrJumpZero, regLimit, addrBreak); + VdbeCoverage(v); + } sqlite3VdbeResolveLabel(v, addrCont); /* Execute the recursive SELECT taking the single row in Current as ** the value for the recursive-table. Store the results in the Queue. */ - p->pPrior = 0; - sqlite3Select(pParse, p, &destQueue); - assert( p->pPrior==0 ); - p->pPrior = pSetup; + if( p->selFlags & SF_Aggregate ){ + sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported"); + }else{ + p->pPrior = 0; + sqlite3Select(pParse, p, &destQueue); + assert( p->pPrior==0 ); + p->pPrior = pSetup; + } /* Keep running the loop until the Queue is empty */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop); + sqlite3VdbeGoto(v, addrTop); sqlite3VdbeResolveLabel(v, addrBreak); end_of_recursive_query: + sqlite3ExprListDelete(pParse->db, p->pOrderBy); p->pOrderBy = pOrderBy; p->pLimit = pLimit; p->pOffset = pOffset; @@ -101428,6 +117965,48 @@ static int multiSelectOrderBy( SelectDest *pDest /* What to do with query results */ ); +/* +** Handle the special case of a compound-select that originates from a +** VALUES clause. By handling this as a special case, we avoid deep +** recursion, and thus do not need to enforce the SQLITE_LIMIT_COMPOUND_SELECT +** on a VALUES clause. +** +** Because the Select object originates from a VALUES clause: +** (1) It has no LIMIT or OFFSET +** (2) All terms are UNION ALL +** (3) There is no ORDER BY clause +*/ +static int multiSelectValues( + Parse *pParse, /* Parsing context */ + Select *p, /* The right-most of SELECTs to be coded */ + SelectDest *pDest /* What to do with query results */ +){ + Select *pPrior; + int nRow = 1; + int rc = 0; + assert( p->selFlags & SF_MultiValue ); + do{ + assert( p->selFlags & SF_Values ); + assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) ); + assert( p->pLimit==0 ); + assert( p->pOffset==0 ); + assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr ); + if( p->pPrior==0 ) break; + assert( p->pPrior->pNext==p ); + p = p->pPrior; + nRow++; + }while(1); + while( p ){ + pPrior = p->pPrior; + p->pPrior = 0; + rc = sqlite3Select(pParse, p, pDest); + p->pPrior = pPrior; + if( rc ) break; + p->nSelectRow = nRow; + p = p->pNext; + } + return rc; +} /* ** This routine is called to process a compound query form from @@ -101483,8 +118062,6 @@ static int multiSelect( assert( (p->selFlags & SF_Recursive)==0 || p->op==TK_ALL || p->op==TK_UNION ); db = pParse->db; pPrior = p->pPrior; - assert( pPrior->pRightmost!=pPrior ); - assert( pPrior->pRightmost==p->pRightmost ); dest = *pDest; if( pPrior->pOrderBy ){ sqlite3ErrorMsg(pParse,"ORDER BY clause should come after %s not before", @@ -101507,24 +118084,21 @@ static int multiSelect( if( dest.eDest==SRT_EphemTab ){ assert( p->pEList ); sqlite3VdbeAddOp2(v, OP_OpenEphemeral, dest.iSDParm, p->pEList->nExpr); - sqlite3VdbeChangeP5(v, BTREE_UNORDERED); dest.eDest = SRT_Table; } + /* Special handling for a compound-select that originates as a VALUES clause. + */ + if( p->selFlags & SF_MultiValue ){ + rc = multiSelectValues(pParse, p, &dest); + goto multi_select_end; + } + /* Make sure all SELECTs in the statement have the same number of elements ** in their result sets. */ assert( p->pEList && pPrior->pEList ); - if( p->pEList->nExpr!=pPrior->pEList->nExpr ){ - if( p->selFlags & SF_Values ){ - sqlite3ErrorMsg(pParse, "all VALUES must have the same number of terms"); - }else{ - sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s" - " do not have the same number of result columns", selectOpName(p->op)); - } - rc = 1; - goto multi_select_end; - } + assert( p->pEList->nExpr==pPrior->pEList->nExpr ); #ifndef SQLITE_OMIT_CTE if( p->selFlags & SF_Recursive ){ @@ -101560,20 +118134,24 @@ static int multiSelect( p->iLimit = pPrior->iLimit; p->iOffset = pPrior->iOffset; if( p->iLimit ){ - addr = sqlite3VdbeAddOp1(v, OP_IfZero, p->iLimit); + addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v); VdbeComment((v, "Jump ahead if LIMIT reached")); + if( p->iOffset ){ + sqlite3VdbeAddOp3(v, OP_OffsetLimit, + p->iLimit, p->iOffset+1, p->iOffset); + } } explainSetInteger(iSub2, pParse->iNextSelectId); rc = sqlite3Select(pParse, p, &dest); testcase( rc!=SQLITE_OK ); pDelete = p->pPrior; p->pPrior = pPrior; - p->nSelectRow += pPrior->nSelectRow; + p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow); if( pPrior->pLimit && sqlite3ExprIsInteger(pPrior->pLimit, &nLimit) - && nLimit>0 && p->nSelectRow > (u64)nLimit + && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) ){ - p->nSelectRow = nLimit; + p->nSelectRow = sqlite3LogEst((u64)nLimit); } if( addr ){ sqlite3VdbeJumpHere(v, addr); @@ -101592,12 +118170,10 @@ static int multiSelect( testcase( p->op==TK_EXCEPT ); testcase( p->op==TK_UNION ); priorOp = SRT_Union; - if( dest.eDest==priorOp && ALWAYS(!p->pLimit &&!p->pOffset) ){ + if( dest.eDest==priorOp ){ /* We can reuse a temporary table generated by a SELECT to our ** right. */ - assert( p->pRightmost!=p ); /* Can only happen for leftward elements - ** of a 3-way or more compound */ assert( p->pLimit==0 ); /* Not allowed on leftward elements */ assert( p->pOffset==0 ); /* Not allowed on leftward elements */ unionTab = dest.iSDParm; @@ -101610,7 +118186,7 @@ static int multiSelect( addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, unionTab, 0); assert( p->addrOpenEphm[0] == -1 ); p->addrOpenEphm[0] = addr; - p->pRightmost->selFlags |= SF_UsesEphemeral; + findRightmost(p)->selFlags |= SF_UsesEphemeral; assert( p->pEList ); } @@ -101647,7 +118223,9 @@ static int multiSelect( pDelete = p->pPrior; p->pPrior = pPrior; p->pOrderBy = 0; - if( p->op==TK_UNION ) p->nSelectRow += pPrior->nSelectRow; + if( p->op==TK_UNION ){ + p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow); + } sqlite3ExprDelete(db, p->pLimit); p->pLimit = pLimit; p->pOffset = pOffset; @@ -101664,17 +118242,17 @@ static int multiSelect( if( dest.eDest==SRT_Output ){ Select *pFirst = p; while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); + generateColumnNames(pParse, pFirst->pSrc, pFirst->pEList); } iBreak = sqlite3VdbeMakeLabel(v); iCont = sqlite3VdbeMakeLabel(v); computeLimitRegisters(pParse, p, iBreak); - sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); + sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); VdbeCoverage(v); iStart = sqlite3VdbeCurrentAddr(v); selectInnerLoop(pParse, p, p->pEList, unionTab, 0, 0, &dest, iCont, iBreak); sqlite3VdbeResolveLabel(v, iCont); - sqlite3VdbeAddOp2(v, OP_Next, unionTab, iStart); + sqlite3VdbeAddOp2(v, OP_Next, unionTab, iStart); VdbeCoverage(v); sqlite3VdbeResolveLabel(v, iBreak); sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0); } @@ -101699,7 +118277,7 @@ static int multiSelect( addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab1, 0); assert( p->addrOpenEphm[0] == -1 ); p->addrOpenEphm[0] = addr; - p->pRightmost->selFlags |= SF_UsesEphemeral; + findRightmost(p)->selFlags |= SF_UsesEphemeral; assert( p->pEList ); /* Code the SELECTs to our left into temporary table "tab1". @@ -101739,20 +118317,20 @@ static int multiSelect( if( dest.eDest==SRT_Output ){ Select *pFirst = p; while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); + generateColumnNames(pParse, pFirst->pSrc, pFirst->pEList); } iBreak = sqlite3VdbeMakeLabel(v); iCont = sqlite3VdbeMakeLabel(v); computeLimitRegisters(pParse, p, iBreak); - sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); + sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); VdbeCoverage(v); r1 = sqlite3GetTempReg(pParse); - iStart = sqlite3VdbeAddOp2(v, OP_RowKey, tab1, r1); - sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0); + iStart = sqlite3VdbeAddOp2(v, OP_RowData, tab1, r1); + sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0); VdbeCoverage(v); sqlite3ReleaseTempReg(pParse, r1); selectInnerLoop(pParse, p, p->pEList, tab1, 0, 0, &dest, iCont, iBreak); sqlite3VdbeResolveLabel(v, iCont); - sqlite3VdbeAddOp2(v, OP_Next, tab1, iStart); + sqlite3VdbeAddOp2(v, OP_Next, tab1, iStart); VdbeCoverage(v); sqlite3VdbeResolveLabel(v, iBreak); sqlite3VdbeAddOp2(v, OP_Close, tab2, 0); sqlite3VdbeAddOp2(v, OP_Close, tab1, 0); @@ -101778,11 +118356,11 @@ static int multiSelect( CollSeq **apColl; /* For looping through pKeyInfo->aColl[] */ int nCol; /* Number of columns in result set */ - assert( p->pRightmost==p ); + assert( p->pNext==0 ); nCol = p->pEList->nExpr; pKeyInfo = sqlite3KeyInfoAlloc(db, nCol, 1); if( !pKeyInfo ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto multi_select_end; } for(i=0, apColl=pKeyInfo->aColl; iselFlags & SF_Values ){ + sqlite3ErrorMsg(pParse, "all VALUES must have the same number of terms"); + }else{ + sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s" + " do not have the same number of result columns", selectOpName(p->op)); + } +} + /* ** Code an output subroutine for a coroutine implementation of a ** SELECT statment. @@ -101858,12 +118449,12 @@ static int generateOutputSubroutine( /* Suppress duplicates for UNION, EXCEPT, and INTERSECT */ if( regPrev ){ - int j1, j2; - j1 = sqlite3VdbeAddOp1(v, OP_IfNot, regPrev); - j2 = sqlite3VdbeAddOp4(v, OP_Compare, pIn->iSdst, regPrev+1, pIn->nSdst, + int addr1, addr2; + addr1 = sqlite3VdbeAddOp1(v, OP_IfNot, regPrev); VdbeCoverage(v); + addr2 = sqlite3VdbeAddOp4(v, OP_Compare, pIn->iSdst, regPrev+1, pIn->nSdst, (char*)sqlite3KeyInfoRef(pKeyInfo), P4_KEYINFO); - sqlite3VdbeAddOp3(v, OP_Jump, j2+2, iContinue, j2+2); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeAddOp3(v, OP_Jump, addr2+2, iContinue, addr2+2); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp3(v, OP_Copy, pIn->iSdst, regPrev+1, pIn->nSdst-1); sqlite3VdbeAddOp2(v, OP_Integer, 1, regPrev); } @@ -101873,15 +118464,14 @@ static int generateOutputSubroutine( */ codeOffset(v, p->iOffset, iContinue); + assert( pDest->eDest!=SRT_Exists ); + assert( pDest->eDest!=SRT_Table ); switch( pDest->eDest ){ /* Store the result as data using a unique key. */ - case SRT_Table: case SRT_EphemTab: { int r1 = sqlite3GetTempReg(pParse); int r2 = sqlite3GetTempReg(pParse); - testcase( pDest->eDest==SRT_Table ); - testcase( pDest->eDest==SRT_EphemTab ); sqlite3VdbeAddOp3(v, OP_MakeRecord, pIn->iSdst, pIn->nSdst, r1); sqlite3VdbeAddOp2(v, OP_NewRowid, pDest->iSDParm, r2); sqlite3VdbeAddOp3(v, OP_Insert, pDest->iSDParm, r1, r2); @@ -101892,39 +118482,27 @@ static int generateOutputSubroutine( } #ifndef SQLITE_OMIT_SUBQUERY - /* If we are creating a set for an "expr IN (SELECT ...)" construct, - ** then there should be a single item on the stack. Write this - ** item into the set table with bogus data. + /* If we are creating a set for an "expr IN (SELECT ...)". */ case SRT_Set: { int r1; - assert( pIn->nSdst==1 ); - pDest->affSdst = - sqlite3CompareAffinity(p->pEList->a[0].pExpr, pDest->affSdst); + testcase( pIn->nSdst>1 ); r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4(v, OP_MakeRecord, pIn->iSdst, 1, r1, &pDest->affSdst,1); - sqlite3ExprCacheAffinityChange(pParse, pIn->iSdst, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, pDest->iSDParm, r1); + sqlite3VdbeAddOp4(v, OP_MakeRecord, pIn->iSdst, pIn->nSdst, + r1, pDest->zAffSdst, pIn->nSdst); + sqlite3ExprCacheAffinityChange(pParse, pIn->iSdst, pIn->nSdst); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, pDest->iSDParm, r1, + pIn->iSdst, pIn->nSdst); sqlite3ReleaseTempReg(pParse, r1); break; } -#if 0 /* Never occurs on an ORDER BY query */ - /* If any row exist in the result set, record that fact and abort. - */ - case SRT_Exists: { - sqlite3VdbeAddOp2(v, OP_Integer, 1, pDest->iSDParm); - /* The LIMIT clause will terminate the loop for us */ - break; - } -#endif - /* If this is a scalar select that is part of an expression, then ** store the results in the appropriate memory cell and break out ** of the scan loop. */ case SRT_Mem: { - assert( pIn->nSdst==1 ); + assert( pIn->nSdst==1 || pParse->nErr>0 ); testcase( pIn->nSdst!=1 ); sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSDParm, 1); /* The LIMIT clause will jump out of the loop for us */ break; @@ -101939,7 +118517,7 @@ static int generateOutputSubroutine( pDest->iSdst = sqlite3GetTempRange(pParse, pIn->nSdst); pDest->nSdst = pIn->nSdst; } - sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSdst, pDest->nSdst); + sqlite3ExprCodeMove(pParse, pIn->iSdst, pDest->iSdst, pIn->nSdst); sqlite3VdbeAddOp1(v, OP_Yield, pDest->iSDParm); break; } @@ -101963,7 +118541,7 @@ static int generateOutputSubroutine( /* Jump to the end of the loop if the LIMIT is reached. */ if( p->iLimit ){ - sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); + sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v); } /* Generate the subroutine return @@ -102071,9 +118649,7 @@ static int multiSelectOrderBy( SelectDest destA; /* Destination for coroutine A */ SelectDest destB; /* Destination for coroutine B */ int regAddrA; /* Address register for select-A coroutine */ - int regEofA; /* Flag to indicate when select-A is complete */ int regAddrB; /* Address register for select-B coroutine */ - int regEofB; /* Flag to indicate when select-B is complete */ int addrSelectA; /* Address of the select-A coroutine */ int addrSelectB; /* Address of the select-B coroutine */ int regOutA; /* Address register for the output-A subroutine */ @@ -102081,6 +118657,7 @@ static int multiSelectOrderBy( int addrOutA; /* Address of the output-A subroutine */ int addrOutB = 0; /* Address of the output-B subroutine */ int addrEofA; /* Address of the select-A-exhausted subroutine */ + int addrEofA_noB; /* Alternate addrEofA if B is uninitialized */ int addrEofB; /* Address of the select-B-exhausted subroutine */ int addrAltB; /* Address of the AiOffset */ int labelCmpr; /* Label for the start of the merge algorithm */ int labelEnd; /* Label for the end of the overall SELECT stmt */ - int j1; /* Jump instructions that get retargetted */ + int addr1; /* Jump instructions that get retargetted */ int op; /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */ KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */ KeyInfo *pKeyMerge; /* Comparison information for merging rows */ @@ -102136,7 +118713,7 @@ static int multiSelectOrderBy( } if( j==nOrderBy ){ Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0); - if( pNew==0 ) return SQLITE_NOMEM; + if( pNew==0 ) return SQLITE_NOMEM_BKPT; pNew->flags |= EP_IntValue; pNew->u.iValue = i; pOrderBy = sqlite3ExprListAppend(pParse, pOrderBy, pNew); @@ -102152,12 +118729,13 @@ static int multiSelectOrderBy( ** to the right and the left are evaluated, they use the correct ** collation. */ - aPermute = sqlite3DbMallocRaw(db, sizeof(int)*nOrderBy); + aPermute = sqlite3DbMallocRawNN(db, sizeof(int)*(nOrderBy + 1)); if( aPermute ){ struct ExprList_item *pItem; - for(i=0, pItem=pOrderBy->a; iu.x.iOrderByCol>0 - && pItem->u.x.iOrderByCol<=p->pEList->nExpr ); + aPermute[0] = nOrderBy; + for(i=1, pItem=pOrderBy->a; i<=nOrderBy; i++, pItem++){ + assert( pItem->u.x.iOrderByCol>0 ); + assert( pItem->u.x.iOrderByCol<=p->pEList->nExpr ); aPermute[i] = pItem->u.x.iOrderByCol - 1; } pKeyMerge = multiSelectOrderByKeyInfo(pParse, p, 1); @@ -102195,6 +118773,7 @@ static int multiSelectOrderBy( /* Separate the left and the right query from one another */ p->pPrior = 0; + pPrior->pNext = 0; sqlite3ResolveOrderGroupBy(pParse, p, p->pOrderBy, "ORDER"); if( pPrior->pPrior==0 ){ sqlite3ResolveOrderGroupBy(pParse, pPrior, pPrior->pOrderBy, "ORDER"); @@ -102217,37 +118796,30 @@ static int multiSelectOrderBy( p->pOffset = 0; regAddrA = ++pParse->nMem; - regEofA = ++pParse->nMem; regAddrB = ++pParse->nMem; - regEofB = ++pParse->nMem; regOutA = ++pParse->nMem; regOutB = ++pParse->nMem; sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA); sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB); - /* Jump past the various subroutines and coroutines to the main - ** merge loop - */ - j1 = sqlite3VdbeAddOp0(v, OP_Goto); - addrSelectA = sqlite3VdbeCurrentAddr(v); - - /* Generate a coroutine to evaluate the SELECT statement to the ** left of the compound operator - the "A" select. */ - VdbeNoopComment((v, "Begin coroutine for left SELECT")); + addrSelectA = sqlite3VdbeCurrentAddr(v) + 1; + addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA); + VdbeComment((v, "left SELECT")); pPrior->iLimit = regLimitA; explainSetInteger(iSub1, pParse->iNextSelectId); sqlite3Select(pParse, pPrior, &destA); - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEofA); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrA); - VdbeNoopComment((v, "End coroutine for left SELECT")); + sqlite3VdbeEndCoroutine(v, regAddrA); + sqlite3VdbeJumpHere(v, addr1); /* Generate a coroutine to evaluate the SELECT statement on ** the right - the "B" select */ - addrSelectB = sqlite3VdbeCurrentAddr(v); - VdbeNoopComment((v, "Begin coroutine for right SELECT")); + addrSelectB = sqlite3VdbeCurrentAddr(v) + 1; + addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB); + VdbeComment((v, "right SELECT")); savedLimit = p->iLimit; savedOffset = p->iOffset; p->iLimit = regLimitB; @@ -102256,9 +118828,7 @@ static int multiSelectOrderBy( sqlite3Select(pParse, p, &destB); p->iLimit = savedLimit; p->iOffset = savedOffset; - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEofB); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - VdbeNoopComment((v, "End coroutine for right SELECT")); + sqlite3VdbeEndCoroutine(v, regAddrB); /* Generate a subroutine that outputs the current row of the A ** select as the next output row of the compound select. @@ -102282,15 +118852,15 @@ static int multiSelectOrderBy( /* Generate a subroutine to run when the results from select A ** are exhausted and only data in select B remains. */ - VdbeNoopComment((v, "eof-A subroutine")); if( op==TK_EXCEPT || op==TK_INTERSECT ){ - addrEofA = sqlite3VdbeAddOp2(v, OP_Goto, 0, labelEnd); + addrEofA_noB = addrEofA = labelEnd; }else{ - addrEofA = sqlite3VdbeAddOp2(v, OP_If, regEofB, labelEnd); - sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofA); - p->nSelectRow += pPrior->nSelectRow; + VdbeNoopComment((v, "eof-A subroutine")); + addrEofA = sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); + addrEofA_noB = sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, labelEnd); + VdbeCoverage(v); + sqlite3VdbeGoto(v, addrEofA); + p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow); } /* Generate a subroutine to run when the results from select B @@ -102301,19 +118871,17 @@ static int multiSelectOrderBy( if( p->nSelectRow > pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow; }else{ VdbeNoopComment((v, "eof-B subroutine")); - addrEofB = sqlite3VdbeAddOp2(v, OP_If, regEofA, labelEnd); - sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrA); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofB); + addrEofB = sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); + sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, labelEnd); VdbeCoverage(v); + sqlite3VdbeGoto(v, addrEofB); } /* Generate code to handle the case of AB @@ -102337,19 +118904,14 @@ static int multiSelectOrderBy( if( op==TK_ALL || op==TK_UNION ){ sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); } - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - sqlite3VdbeAddOp2(v, OP_If, regEofB, addrEofB); - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelCmpr); + sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, addrEofB); VdbeCoverage(v); + sqlite3VdbeGoto(v, labelCmpr); /* This code runs once to initialize everything. */ - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEofA); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEofB); - sqlite3VdbeAddOp2(v, OP_Gosub, regAddrA, addrSelectA); - sqlite3VdbeAddOp2(v, OP_Gosub, regAddrB, addrSelectB); - sqlite3VdbeAddOp2(v, OP_If, regEofA, addrEofA); - sqlite3VdbeAddOp2(v, OP_If, regEofB, addrEofB); + sqlite3VdbeJumpHere(v, addr1); + sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, addrEofA_noB); VdbeCoverage(v); + sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, addrEofB); VdbeCoverage(v); /* Implement the main merge loop */ @@ -102358,7 +118920,7 @@ static int multiSelectOrderBy( sqlite3VdbeAddOp4(v, OP_Compare, destA.iSdst, destB.iSdst, nOrderBy, (char*)pKeyMerge, P4_KEYINFO); sqlite3VdbeChangeP5(v, OPFLAG_PERMUTE); - sqlite3VdbeAddOp3(v, OP_Jump, addrAltB, addrAeqB, addrAgtB); + sqlite3VdbeAddOp3(v, OP_Jump, addrAltB, addrAeqB, addrAgtB); VdbeCoverage(v); /* Jump to the this point in order to terminate the query. */ @@ -102369,7 +118931,7 @@ static int multiSelectOrderBy( if( pDest->eDest==SRT_Output ){ Select *pFirst = pPrior; while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); + generateColumnNames(pParse, pFirst->pSrc, pFirst->pEList); } /* Reassembly the compound query so that it will be freed correctly @@ -102378,18 +118940,19 @@ static int multiSelectOrderBy( sqlite3SelectDelete(db, p->pPrior); } p->pPrior = pPrior; + pPrior->pNext = p; /*** TBD: Insert subroutine calls to close cursors on incomplete **** subqueries ****/ explainComposite(pParse, p->op, iSub1, iSub2, 0); - return SQLITE_OK; + return pParse->nErr!=0; } #endif #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) /* Forward Declarations */ -static void substExprList(sqlite3*, ExprList*, int, ExprList*); -static void substSelect(sqlite3*, Select *, int, ExprList *); +static void substExprList(Parse*, ExprList*, int, ExprList*); +static void substSelect(Parse*, Select *, int, ExprList*, int); /* ** Scan through the expression pExpr. Replace every reference to @@ -102405,36 +118968,46 @@ static void substSelect(sqlite3*, Select *, int, ExprList *); ** of the subquery rather the result set of the subquery. */ static Expr *substExpr( - sqlite3 *db, /* Report malloc errors to this connection */ + Parse *pParse, /* Report errors here */ Expr *pExpr, /* Expr in which substitution occurs */ int iTable, /* Table to be substituted */ ExprList *pEList /* Substitute expressions */ ){ + sqlite3 *db = pParse->db; if( pExpr==0 ) return 0; if( pExpr->op==TK_COLUMN && pExpr->iTable==iTable ){ if( pExpr->iColumn<0 ){ pExpr->op = TK_NULL; }else{ Expr *pNew; + Expr *pCopy = pEList->a[pExpr->iColumn].pExpr; assert( pEList!=0 && pExpr->iColumnnExpr ); assert( pExpr->pLeft==0 && pExpr->pRight==0 ); - pNew = sqlite3ExprDup(db, pEList->a[pExpr->iColumn].pExpr, 0); - sqlite3ExprDelete(db, pExpr); - pExpr = pNew; + if( sqlite3ExprIsVector(pCopy) ){ + sqlite3VectorErrorMsg(pParse, pCopy); + }else{ + pNew = sqlite3ExprDup(db, pCopy, 0); + if( pNew && (pExpr->flags & EP_FromJoin) ){ + pNew->iRightJoinTable = pExpr->iRightJoinTable; + pNew->flags |= EP_FromJoin; + } + sqlite3ExprDelete(db, pExpr); + pExpr = pNew; + } } }else{ - pExpr->pLeft = substExpr(db, pExpr->pLeft, iTable, pEList); - pExpr->pRight = substExpr(db, pExpr->pRight, iTable, pEList); + pExpr->pLeft = substExpr(pParse, pExpr->pLeft, iTable, pEList); + pExpr->pRight = substExpr(pParse, pExpr->pRight, iTable, pEList); if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - substSelect(db, pExpr->x.pSelect, iTable, pEList); + substSelect(pParse, pExpr->x.pSelect, iTable, pEList, 1); }else{ - substExprList(db, pExpr->x.pList, iTable, pEList); + substExprList(pParse, pExpr->x.pList, iTable, pEList); } } return pExpr; } static void substExprList( - sqlite3 *db, /* Report malloc errors here */ + Parse *pParse, /* Report errors here */ ExprList *pList, /* List to scan and in which to make substitutes */ int iTable, /* Table to be substituted */ ExprList *pEList /* Substitute values */ @@ -102442,32 +119015,35 @@ static void substExprList( int i; if( pList==0 ) return; for(i=0; inExpr; i++){ - pList->a[i].pExpr = substExpr(db, pList->a[i].pExpr, iTable, pEList); + pList->a[i].pExpr = substExpr(pParse, pList->a[i].pExpr, iTable, pEList); } } static void substSelect( - sqlite3 *db, /* Report malloc errors here */ + Parse *pParse, /* Report errors here */ Select *p, /* SELECT statement in which to make substitutions */ int iTable, /* Table to be replaced */ - ExprList *pEList /* Substitute values */ + ExprList *pEList, /* Substitute values */ + int doPrior /* Do substitutes on p->pPrior too */ ){ SrcList *pSrc; struct SrcList_item *pItem; int i; if( !p ) return; - substExprList(db, p->pEList, iTable, pEList); - substExprList(db, p->pGroupBy, iTable, pEList); - substExprList(db, p->pOrderBy, iTable, pEList); - p->pHaving = substExpr(db, p->pHaving, iTable, pEList); - p->pWhere = substExpr(db, p->pWhere, iTable, pEList); - substSelect(db, p->pPrior, iTable, pEList); - pSrc = p->pSrc; - assert( pSrc ); /* Even for (SELECT 1) we have: pSrc!=0 but pSrc->nSrc==0 */ - if( ALWAYS(pSrc) ){ + do{ + substExprList(pParse, p->pEList, iTable, pEList); + substExprList(pParse, p->pGroupBy, iTable, pEList); + substExprList(pParse, p->pOrderBy, iTable, pEList); + p->pHaving = substExpr(pParse, p->pHaving, iTable, pEList); + p->pWhere = substExpr(pParse, p->pWhere, iTable, pEList); + pSrc = p->pSrc; + assert( pSrc!=0 ); for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){ - substSelect(db, pItem->pSelect, iTable, pEList); + substSelect(pParse, pItem->pSelect, iTable, pEList, 1); + if( pItem->fg.isTabFunc ){ + substExprList(pParse, pItem->u1.pFuncArg, iTable, pEList); + } } - } + }while( doPrior && (p = p->pPrior)!=0 ); } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ @@ -102493,7 +119069,7 @@ static void substSelect( ** ** SELECT x+y AS a FROM t1 WHERE z<100 AND a>5 ** -** The code generated for this simpification gives the same result +** The code generated for this simplification gives the same result ** but only has to scan the data once. And because indices might ** exist on the table t1, a complete scan of the data might be ** avoided. @@ -102502,7 +119078,10 @@ static void substSelect( ** ** (1) The subquery and the outer query do not both use aggregates. ** -** (2) The subquery is not an aggregate or the outer query is not a join. +** (2) The subquery is not an aggregate or (2a) the outer query is not a join +** and (2b) the outer query does not use subqueries other than the one +** FROM-clause subquery that is a candidate for flattening. (2b is +** due to ticket [2f7170d73bf9abf80] from 2015-02-09.) ** ** (3) The subquery is not the right operand of a left outer join ** (Originally ticket #306. Strengthened by ticket #3300) @@ -102526,8 +119105,10 @@ static void substSelect( ** (9) The subquery does not use LIMIT or the outer query does not use ** aggregates. ** -** (10) The subquery does not use aggregates or the outer query does not -** use LIMIT. +** (**) Restriction (10) was removed from the code on 2005-02-05 but we +** accidently carried the comment forward until 2014-09-15. Original +** text: "The subquery does not use aggregates or the outer query +** does not use LIMIT." ** ** (11) The subquery and the outer query do not both have ORDER BY clauses. ** @@ -102590,6 +119171,11 @@ static void substSelect( ** parent to a compound query confuses the code that handles ** recursive queries in multiSelect(). ** +** (24) The subquery is not an aggregate that uses the built-in min() or +** or max() functions. (Without this restriction, a query like: +** "SELECT x FROM (SELECT max(y), x FROM t1)" would not necessarily +** return the value X for which Y was maximal.) +** ** ** In this routine, the "p" parameter is a pointer to the outer query. ** The subquery is p->pSrc->a[iFrom]. isAgg is true if the outer query @@ -102609,7 +119195,7 @@ static int flattenSubquery( int subqueryIsAgg /* True if the subquery uses aggregate functions */ ){ const char *zSavedAuthContext = pParse->zAuthContext; - Select *pParent; + Select *pParent; /* Current UNION ALL term of the other query */ Select *pSub; /* The inner query or "subquery" */ Select *pSub1; /* Pointer to the rightmost select in sub-query */ SrcList *pSrc; /* The FROM clause of the outer query */ @@ -102632,18 +119218,27 @@ static int flattenSubquery( iParent = pSubitem->iCursor; pSub = pSubitem->pSelect; assert( pSub!=0 ); - if( isAgg && subqueryIsAgg ) return 0; /* Restriction (1) */ - if( subqueryIsAgg && pSrc->nSrc>1 ) return 0; /* Restriction (2) */ + if( subqueryIsAgg ){ + if( isAgg ) return 0; /* Restriction (1) */ + if( pSrc->nSrc>1 ) return 0; /* Restriction (2a) */ + if( (p->pWhere && ExprHasProperty(p->pWhere,EP_Subquery)) + || (sqlite3ExprListFlags(p->pEList) & EP_Subquery)!=0 + || (sqlite3ExprListFlags(p->pOrderBy) & EP_Subquery)!=0 + ){ + return 0; /* Restriction (2b) */ + } + } + pSubSrc = pSub->pSrc; assert( pSubSrc ); /* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants, - ** not arbitrary expresssions, we allowed some combining of LIMIT and OFFSET + ** not arbitrary expressions, we allowed some combining of LIMIT and OFFSET ** because they could be computed at compile-time. But when LIMIT and OFFSET ** became arbitrary expressions, we were forced to add restrictions (13) ** and (14). */ if( pSub->pLimit && p->pLimit ) return 0; /* Restriction (13) */ if( pSub->pOffset ) return 0; /* Restriction (14) */ - if( p->pRightmost && pSub->pLimit ){ + if( (p->selFlags & SF_Compound)!=0 && pSub->pLimit ){ return 0; /* Restriction (15) */ } if( pSubSrc->nSrc==0 ) return 0; /* Restriction (7) */ @@ -102662,8 +119257,14 @@ static int flattenSubquery( if( pSub->pLimit && (p->selFlags & SF_Distinct)!=0 ){ return 0; /* Restriction (21) */ } - if( pSub->selFlags & SF_Recursive ) return 0; /* Restriction (22) */ - if( (p->selFlags & SF_Recursive) && pSub->pPrior ) return 0; /* (23) */ + testcase( pSub->selFlags & SF_Recursive ); + testcase( pSub->selFlags & SF_MinMaxAgg ); + if( pSub->selFlags & (SF_Recursive|SF_MinMaxAgg) ){ + return 0; /* Restrictions (22) and (24) */ + } + if( (p->selFlags & SF_Recursive) && pSub->pPrior ){ + return 0; /* Restriction (23) */ + } /* OBSOLETE COMMENT 1: ** Restriction 3: If the subquery is a join, make sure the subquery is @@ -102697,7 +119298,7 @@ static int flattenSubquery( ** is fraught with danger. Best to avoid the whole thing. If the ** subquery is the right term of a LEFT JOIN, then do not flatten. */ - if( (pSubitem->jointype & JT_OUTER)!=0 ){ + if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){ return 0; } @@ -102717,10 +119318,10 @@ static int flattenSubquery( testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ); testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate ); assert( pSub->pSrc!=0 ); + assert( pSub->pEList->nExpr==pSub1->pEList->nExpr ); if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0 || (pSub1->pPrior && pSub1->op!=TK_ALL) || pSub1->pSrc->nSrc<1 - || pSub->pEList->nExpr!=pSub1->pEList->nExpr ){ return 0; } @@ -102737,6 +119338,8 @@ static int flattenSubquery( } /***** If we reach this point, flattening is permitted. *****/ + SELECTTRACE(1,pParse,p,("flatten %s.%p from term %d\n", + pSub->zSelName, pSub, iFrom)); /* Authorize the subquery */ pParse->zAuthContext = pSubitem->zName; @@ -102789,19 +119392,23 @@ static int flattenSubquery( p->pLimit = 0; p->pOffset = 0; pNew = sqlite3SelectDup(db, p, 0); + sqlite3SelectSetName(pNew, pSub->zSelName); p->pOffset = pOffset; p->pLimit = pLimit; p->pOrderBy = pOrderBy; p->pSrc = pSrc; p->op = TK_ALL; - p->pRightmost = 0; if( pNew==0 ){ - pNew = pPrior; + p->pPrior = pPrior; }else{ pNew->pPrior = pPrior; - pNew->pRightmost = 0; + if( pPrior ) pPrior->pNext = pNew; + pNew->pNext = p; + p->pPrior = pNew; + SELECTTRACE(2,pParse,p, + ("compound-subquery flattener creates %s.%p as peer\n", + pNew->zSelName, pNew)); } - p->pPrior = pNew; if( db->mallocFailed ) return 1; } @@ -102830,12 +119437,12 @@ static int flattenSubquery( */ if( ALWAYS(pSubitem->pTab!=0) ){ Table *pTabToDel = pSubitem->pTab; - if( pTabToDel->nRef==1 ){ + if( pTabToDel->nTabRef==1 ){ Parse *pToplevel = sqlite3ParseToplevel(pParse); pTabToDel->pNextZombie = pToplevel->pZombieTab; pToplevel->pZombieTab = pTabToDel; }else{ - pTabToDel->nRef--; + pTabToDel->nTabRef--; } pSubitem->pTab = 0; } @@ -102862,7 +119469,7 @@ static int flattenSubquery( if( pSrc ){ assert( pParent==p ); /* First time through the loop */ - jointype = pSubitem->jointype; + jointype = pSubitem->fg.jointype; }else{ assert( pParent!=p ); /* 2nd and subsequent times through the loop */ pSrc = pParent->pSrc = sqlite3SrcListAppend(db, 0, 0, 0); @@ -102883,9 +119490,9 @@ static int flattenSubquery( ** ** The outer query has 3 slots in its FROM clause. One slot of the ** outer query (the middle slot) is used by the subquery. The next - ** block of code will expand the out query to 4 slots. The middle - ** slot is expanded to two slots in order to make space for the - ** two elements in the FROM clause of the subquery. + ** block of code will expand the outer query FROM clause to 4 slots. + ** The middle slot is expanded to two slots in order to make space + ** for the two elements in the FROM clause of the subquery. */ if( nSubSrc>1 ){ pParent->pSrc = pSrc = sqlite3SrcListEnlarge(db, pSrc, nSubSrc-1,iFrom+1); @@ -102899,10 +119506,11 @@ static int flattenSubquery( */ for(i=0; ia[i+iFrom].pUsing); + assert( pSrc->a[i+iFrom].fg.isTabFunc==0 ); pSrc->a[i+iFrom] = pSubSrc->a[i]; memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i])); } - pSrc->a[iFrom].jointype = jointype; + pSrc->a[iFrom].fg.jointype = jointype; /* Now begin substituting subquery result set expressions for ** references to the iParent in the outer query. @@ -102924,36 +119532,40 @@ static int flattenSubquery( pList->a[i].zName = zName; } } - substExprList(db, pParent->pEList, iParent, pSub->pEList); - if( isAgg ){ - substExprList(db, pParent->pGroupBy, iParent, pSub->pEList); - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); - } if( pSub->pOrderBy ){ + /* At this point, any non-zero iOrderByCol values indicate that the + ** ORDER BY column expression is identical to the iOrderByCol'th + ** expression returned by SELECT statement pSub. Since these values + ** do not necessarily correspond to columns in SELECT statement pParent, + ** zero them before transfering the ORDER BY clause. + ** + ** Not doing this may cause an error if a subsequent call to this + ** function attempts to flatten a compound sub-query into pParent + ** (the only way this can happen is if the compound sub-query is + ** currently part of pSub->pSrc). See ticket [d11a6e908f]. */ + ExprList *pOrderBy = pSub->pOrderBy; + for(i=0; inExpr; i++){ + pOrderBy->a[i].u.x.iOrderByCol = 0; + } assert( pParent->pOrderBy==0 ); - pParent->pOrderBy = pSub->pOrderBy; + assert( pSub->pPrior==0 ); + pParent->pOrderBy = pOrderBy; pSub->pOrderBy = 0; - }else if( pParent->pOrderBy ){ - substExprList(db, pParent->pOrderBy, iParent, pSub->pEList); - } - if( pSub->pWhere ){ - pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); - }else{ - pWhere = 0; } + pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); if( subqueryIsAgg ){ assert( pParent->pHaving==0 ); pParent->pHaving = pParent->pWhere; pParent->pWhere = pWhere; - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); - pParent->pHaving = sqlite3ExprAnd(db, pParent->pHaving, - sqlite3ExprDup(db, pSub->pHaving, 0)); + pParent->pHaving = sqlite3ExprAnd(db, + sqlite3ExprDup(db, pSub->pHaving, 0), pParent->pHaving + ); assert( pParent->pGroupBy==0 ); pParent->pGroupBy = sqlite3ExprListDup(db, pSub->pGroupBy, 0); }else{ - pParent->pWhere = substExpr(db, pParent->pWhere, iParent, pSub->pEList); - pParent->pWhere = sqlite3ExprAnd(db, pParent->pWhere, pWhere); + pParent->pWhere = sqlite3ExprAnd(db, pWhere, pParent->pWhere); } + substSelect(pParse, pParent, iParent, pSub->pEList, 0); /* The flattened query is distinct if either the inner or the ** outer query is distinct. @@ -102977,10 +119589,94 @@ static int flattenSubquery( */ sqlite3SelectDelete(db, pSub1); +#if SELECTTRACE_ENABLED + if( sqlite3SelectTrace & 0x100 ){ + SELECTTRACE(0x100,pParse,p,("After flattening:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif + return 1; } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ + + +#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) +/* +** Make copies of relevant WHERE clause terms of the outer query into +** the WHERE clause of subquery. Example: +** +** SELECT * FROM (SELECT a AS x, c-d AS y FROM t1) WHERE x=5 AND y=10; +** +** Transformed into: +** +** SELECT * FROM (SELECT a AS x, c-d AS y FROM t1 WHERE a=5 AND c-d=10) +** WHERE x=5 AND y=10; +** +** The hope is that the terms added to the inner query will make it more +** efficient. +** +** Do not attempt this optimization if: +** +** (1) The inner query is an aggregate. (In that case, we'd really want +** to copy the outer WHERE-clause terms onto the HAVING clause of the +** inner query. But they probably won't help there so do not bother.) +** +** (2) The inner query is the recursive part of a common table expression. +** +** (3) The inner query has a LIMIT clause (since the changes to the WHERE +** close would change the meaning of the LIMIT). +** +** (4) The inner query is the right operand of a LEFT JOIN. (The caller +** enforces this restriction since this routine does not have enough +** information to know.) +** +** (5) The WHERE clause expression originates in the ON or USING clause +** of a LEFT JOIN. +** +** Return 0 if no changes are made and non-zero if one or more WHERE clause +** terms are duplicated into the subquery. +*/ +static int pushDownWhereTerms( + Parse *pParse, /* Parse context (for malloc() and error reporting) */ + Select *pSubq, /* The subquery whose WHERE clause is to be augmented */ + Expr *pWhere, /* The WHERE clause of the outer query */ + int iCursor /* Cursor number of the subquery */ +){ + Expr *pNew; + int nChng = 0; + Select *pX; /* For looping over compound SELECTs in pSubq */ + if( pWhere==0 ) return 0; + for(pX=pSubq; pX; pX=pX->pPrior){ + if( (pX->selFlags & (SF_Aggregate|SF_Recursive))!=0 ){ + testcase( pX->selFlags & SF_Aggregate ); + testcase( pX->selFlags & SF_Recursive ); + testcase( pX!=pSubq ); + return 0; /* restrictions (1) and (2) */ + } + } + if( pSubq->pLimit!=0 ){ + return 0; /* restriction (3) */ + } + while( pWhere->op==TK_AND ){ + nChng += pushDownWhereTerms(pParse, pSubq, pWhere->pRight, iCursor); + pWhere = pWhere->pLeft; + } + if( ExprHasProperty(pWhere,EP_FromJoin) ) return 0; /* restriction 5 */ + if( sqlite3ExprIsTableConstant(pWhere, iCursor) ){ + nChng++; + while( pSubq ){ + pNew = sqlite3ExprDup(pParse->db, pWhere, 0); + pNew = substExpr(pParse, pNew, iCursor, pSubq->pEList); + pSubq->pWhere = sqlite3ExprAnd(pParse->db, pSubq->pWhere, pNew); + pSubq = pSubq->pPrior; + } + } + return nChng; +} +#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ + /* ** Based on the contents of the AggInfo structure indicated by the first ** argument, this function checks if the following are true: @@ -103023,7 +119719,7 @@ static u8 minMaxQuery(AggInfo *pAggInfo, ExprList **ppMinMax){ /* ** The select statement passed as the first argument is an aggregate query. -** The second argment is the associated aggregate-info object. This +** The second argument is the associated aggregate-info object. This ** function tests if the SELECT is of the form: ** ** SELECT count(*) FROM @@ -103064,20 +119760,20 @@ static Table *isSimpleCount(Select *p, AggInfo *pAggInfo){ ** pFrom->pIndex and return SQLITE_OK. */ SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){ - if( pFrom->pTab && pFrom->zIndex ){ + if( pFrom->pTab && pFrom->fg.isIndexedBy ){ Table *pTab = pFrom->pTab; - char *zIndex = pFrom->zIndex; + char *zIndexedBy = pFrom->u1.zIndexedBy; Index *pIdx; for(pIdx=pTab->pIndex; - pIdx && sqlite3StrICmp(pIdx->zName, zIndex); + pIdx && sqlite3StrICmp(pIdx->zName, zIndexedBy); pIdx=pIdx->pNext ); if( !pIdx ){ - sqlite3ErrorMsg(pParse, "no such index: %s", zIndex, 0); + sqlite3ErrorMsg(pParse, "no such index: %s", zIndexedBy, 0); pParse->checkSchema = 1; return SQLITE_ERROR; } - pFrom->pIndex = pIdx; + pFrom->pIBIndex = pIdx; } return SQLITE_OK; } @@ -103133,18 +119829,38 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ if( pNewSrc==0 ) return WRC_Abort; *pNew = *p; p->pSrc = pNewSrc; - p->pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ALL, 0)); + p->pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ASTERISK, 0)); p->op = TK_SELECT; p->pWhere = 0; pNew->pGroupBy = 0; pNew->pHaving = 0; pNew->pOrderBy = 0; p->pPrior = 0; + p->pNext = 0; + p->pWith = 0; + p->selFlags &= ~SF_Compound; + assert( (p->selFlags & SF_Converted)==0 ); + p->selFlags |= SF_Converted; + assert( pNew->pPrior!=0 ); + pNew->pPrior->pNext = pNew; pNew->pLimit = 0; pNew->pOffset = 0; return WRC_Continue; } +/* +** Check to see if the FROM clause term pFrom has table-valued function +** arguments. If it does, leave an error message in pParse and return +** non-zero, since pFrom is not allowed to be a table-valued function. +*/ +static int cannotBeFunction(Parse *pParse, struct SrcList_item *pFrom){ + if( pFrom->fg.isTabFunc ){ + sqlite3ErrorMsg(pParse, "'%s' is not a function", pFrom->zName); + return 1; + } + return 0; +} + #ifndef SQLITE_OMIT_CTE /* ** Argument pWith (which may be NULL) points to a linked list of nested @@ -103157,7 +119873,7 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){ ** object that the returned CTE belongs to. */ static struct Cte *searchWith( - With *pWith, /* Current outermost WITH clause */ + With *pWith, /* Current innermost WITH clause */ struct SrcList_item *pItem, /* FROM clause element to resolve */ With **ppContext /* OUT: WITH clause return value belongs to */ ){ @@ -103188,11 +119904,12 @@ static struct Cte *searchWith( ** statement with which it is associated. */ SQLITE_PRIVATE void sqlite3WithPush(Parse *pParse, With *pWith, u8 bFree){ - assert( bFree==0 || pParse->pWith==0 ); + assert( bFree==0 || (pParse->pWith==0 && pParse->pWithToFree==0) ); if( pWith ){ + assert( pParse->pWith!=pWith ); pWith->pOuter = pParse->pWith; pParse->pWith = pWith; - pParse->bFreeWith = bFree; + if( bFree ) pParse->pWithToFree = pWith; } } @@ -103231,25 +119948,26 @@ static int withExpand( int bMayRecursive; /* True if compound joined by UNION [ALL] */ With *pSavedWith; /* Initial value of pParse->pWith */ - /* If pCte->zErr is non-NULL at this point, then this is an illegal + /* If pCte->zCteErr is non-NULL at this point, then this is an illegal ** recursive reference to CTE pCte. Leave an error in pParse and return - ** early. If pCte->zErr is NULL, then this is not a recursive reference. + ** early. If pCte->zCteErr is NULL, then this is not a recursive reference. ** In this case, proceed. */ - if( pCte->zErr ){ - sqlite3ErrorMsg(pParse, pCte->zErr, pCte->zName); + if( pCte->zCteErr ){ + sqlite3ErrorMsg(pParse, pCte->zCteErr, pCte->zName); return SQLITE_ERROR; } + if( cannotBeFunction(pParse, pFrom) ) return SQLITE_ERROR; assert( pFrom->pTab==0 ); pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table)); if( pTab==0 ) return WRC_Abort; - pTab->nRef = 1; + pTab->nTabRef = 1; pTab->zName = sqlite3DbStrDup(db, pCte->zName); pTab->iPKey = -1; - pTab->nRowEst = 1048576; - pTab->tabFlags |= TF_Ephemeral; + pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); + pTab->tabFlags |= TF_Ephemeral | TF_NoVisibleRowid; pFrom->pSelect = sqlite3SelectDup(db, pCte->pSelect, 0); - if( db->mallocFailed ) return SQLITE_NOMEM; + if( db->mallocFailed ) return SQLITE_NOMEM_BKPT; assert( pFrom->pSelect ); /* Check if this is a recursive CTE. */ @@ -103265,31 +119983,40 @@ static int withExpand( && 0==sqlite3StrICmp(pItem->zName, pCte->zName) ){ pItem->pTab = pTab; - pItem->isRecursive = 1; - pTab->nRef++; + pItem->fg.isRecursive = 1; + pTab->nTabRef++; pSel->selFlags |= SF_Recursive; } } } /* Only one recursive reference is permitted. */ - if( pTab->nRef>2 ){ + if( pTab->nTabRef>2 ){ sqlite3ErrorMsg( pParse, "multiple references to recursive table: %s", pCte->zName ); return SQLITE_ERROR; } - assert( pTab->nRef==1 || ((pSel->selFlags&SF_Recursive) && pTab->nRef==2 )); + assert( pTab->nTabRef==1 || ((pSel->selFlags&SF_Recursive) && pTab->nTabRef==2 )); - pCte->zErr = "circular reference: %s"; + pCte->zCteErr = "circular reference: %s"; pSavedWith = pParse->pWith; pParse->pWith = pWith; - sqlite3WalkSelect(pWalker, bMayRecursive ? pSel->pPrior : pSel); + if( bMayRecursive ){ + Select *pPrior = pSel->pPrior; + assert( pPrior->pWith==0 ); + pPrior->pWith = pSel->pWith; + sqlite3WalkSelect(pWalker, pPrior); + pPrior->pWith = 0; + }else{ + sqlite3WalkSelect(pWalker, pSel); + } + pParse->pWith = pWith; for(pLeft=pSel; pLeft->pPrior; pLeft=pLeft->pPrior); pEList = pLeft->pEList; if( pCte->pCols ){ - if( pEList->nExpr!=pCte->pCols->nExpr ){ + if( pEList && pEList->nExpr!=pCte->pCols->nExpr ){ sqlite3ErrorMsg(pParse, "table %s has %d values for %d columns", pCte->zName, pEList->nExpr, pCte->pCols->nExpr ); @@ -103299,16 +120026,16 @@ static int withExpand( pEList = pCte->pCols; } - selectColumnsFromExprList(pParse, pEList, &pTab->nCol, &pTab->aCol); + sqlite3ColumnsFromExprList(pParse, pEList, &pTab->nCol, &pTab->aCol); if( bMayRecursive ){ if( pSel->selFlags & SF_Recursive ){ - pCte->zErr = "multiple recursive references: %s"; + pCte->zCteErr = "multiple recursive references: %s"; }else{ - pCte->zErr = "recursive reference in a subquery: %s"; + pCte->zCteErr = "recursive reference in a subquery: %s"; } sqlite3WalkSelect(pWalker, pSel); } - pCte->zErr = 0; + pCte->zCteErr = 0; pParse->pWith = pSavedWith; } @@ -103327,9 +120054,12 @@ static int withExpand( */ static void selectPopWith(Walker *pWalker, Select *p){ Parse *pParse = pWalker->pParse; - if( p->pWith ){ - assert( pParse->pWith==p->pWith ); - pParse->pWith = p->pWith->pOuter; + if( pParse->pWith && p->pPrior==0 ){ + With *pWith = findRightmost(p)->pWith; + if( pWith!=0 ){ + assert( pParse->pWith==pWith ); + pParse->pWith = pWith->pOuter; + } } } #else @@ -103348,10 +120078,10 @@ static void selectPopWith(Walker *pWalker, Select *p){ ** fill pTabList->a[].pSelect with a copy of the SELECT statement ** that implements the view. A copy is made of the view's SELECT ** statement so that we can freely modify or delete that statement -** without worrying about messing up the presistent representation +** without worrying about messing up the persistent representation ** of the view. ** -** (3) Add terms to the WHERE clause to accomodate the NATURAL keyword +** (3) Add terms to the WHERE clause to accommodate the NATURAL keyword ** on joins and the ON and USING clause of joins. ** ** (4) Scan the list of columns in the result set (pEList) looking @@ -103379,7 +120109,9 @@ static int selectExpander(Walker *pWalker, Select *p){ } pTabList = p->pSrc; pEList = p->pEList; - sqlite3WithPush(pParse, p->pWith, 0); + if( p->pWith ){ + sqlite3WithPush(pParse, p->pWith, 0); + } /* Make sure cursor numbers have been assigned to all entries in ** the FROM clause of the SELECT statement. @@ -103392,17 +120124,9 @@ static int selectExpander(Walker *pWalker, Select *p){ */ for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ Table *pTab; - assert( pFrom->isRecursive==0 || pFrom->pTab ); - if( pFrom->isRecursive ) continue; - if( pFrom->pTab!=0 ){ - /* This statement has already been prepared. There is no need - ** to go further. */ - assert( i==0 ); -#ifndef SQLITE_OMIT_CTE - selectPopWith(pWalker, p); -#endif - return WRC_Prune; - } + assert( pFrom->fg.isRecursive==0 || pFrom->pTab!=0 ); + if( pFrom->fg.isRecursive ) continue; + assert( pFrom->pTab==0 ); #ifndef SQLITE_OMIT_CTE if( withExpand(pWalker, pFrom) ) return WRC_Abort; if( pFrom->pTab ) {} else @@ -103413,15 +120137,15 @@ static int selectExpander(Walker *pWalker, Select *p){ /* A sub-query in the FROM clause of a SELECT */ assert( pSel!=0 ); assert( pFrom->pTab==0 ); - sqlite3WalkSelect(pWalker, pSel); + if( sqlite3WalkSelect(pWalker, pSel) ) return WRC_Abort; pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table)); if( pTab==0 ) return WRC_Abort; - pTab->nRef = 1; + pTab->nTabRef = 1; pTab->zName = sqlite3MPrintf(db, "sqlite_sq_%p", (void*)pTab); while( pSel->pPrior ){ pSel = pSel->pPrior; } - selectColumnsFromExprList(pParse, pSel->pEList, &pTab->nCol, &pTab->aCol); + sqlite3ColumnsFromExprList(pParse, pSel->pEList,&pTab->nCol,&pTab->aCol); pTab->iPKey = -1; - pTab->nRowEst = 1048576; + pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); pTab->tabFlags |= TF_Ephemeral; #endif }else{ @@ -103429,20 +120153,27 @@ static int selectExpander(Walker *pWalker, Select *p){ assert( pFrom->pTab==0 ); pFrom->pTab = pTab = sqlite3LocateTableItem(pParse, 0, pFrom); if( pTab==0 ) return WRC_Abort; - if( pTab->nRef==0xffff ){ + if( pTab->nTabRef>=0xffff ){ sqlite3ErrorMsg(pParse, "too many references to \"%s\": max 65535", pTab->zName); pFrom->pTab = 0; return WRC_Abort; } - pTab->nRef++; + pTab->nTabRef++; + if( !IsVirtual(pTab) && cannotBeFunction(pParse, pFrom) ){ + return WRC_Abort; + } #if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE) - if( pTab->pSelect || IsVirtual(pTab) ){ - /* We reach here if the named table is a really a view */ + if( IsVirtual(pTab) || pTab->pSelect ){ + i16 nCol; if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort; assert( pFrom->pSelect==0 ); pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0); + sqlite3SelectSetName(pFrom->pSelect, pTab->zName); + nCol = pTab->nCol; + pTab->nCol = -1; sqlite3WalkSelect(pWalker, pFrom->pSelect); + pTab->nCol = nCol; } #endif } @@ -103462,19 +120193,20 @@ static int selectExpander(Walker *pWalker, Select *p){ /* For every "*" that occurs in the column list, insert the names of ** all columns in all tables. And for every TABLE.* insert the names ** of all columns in TABLE. The parser inserted a special expression - ** with the TK_ALL operator for each "*" that it found in the column list. - ** The following code just has to locate the TK_ALL expressions and expand - ** each one to the list of all columns in all tables. + ** with the TK_ASTERISK operator for each "*" that it found in the column + ** list. The following code just has to locate the TK_ASTERISK + ** expressions and expand each one to the list of all columns in + ** all tables. ** ** The first loop just checks to see if there are any "*" operators ** that need expanding. */ for(k=0; knExpr; k++){ pE = pEList->a[k].pExpr; - if( pE->op==TK_ALL ) break; + if( pE->op==TK_ASTERISK ) break; assert( pE->op!=TK_DOT || pE->pRight!=0 ); assert( pE->op!=TK_DOT || (pE->pLeft!=0 && pE->pLeft->op==TK_ID) ); - if( pE->op==TK_DOT && pE->pRight->op==TK_ALL ) break; + if( pE->op==TK_DOT && pE->pRight->op==TK_ASTERISK ) break; } if( knExpr ){ /* @@ -103488,18 +120220,13 @@ static int selectExpander(Walker *pWalker, Select *p){ int longNames = (flags & SQLITE_FullColNames)!=0 && (flags & SQLITE_ShortColNames)==0; - /* When processing FROM-clause subqueries, it is always the case - ** that full_column_names=OFF and short_column_names=ON. The - ** sqlite3ResultSetOfSelect() routine makes it so. */ - assert( (p->selFlags & SF_NestedFrom)==0 - || ((flags & SQLITE_FullColNames)==0 && - (flags & SQLITE_ShortColNames)!=0) ); - for(k=0; knExpr; k++){ pE = a[k].pExpr; pRight = pE->pRight; assert( pE->op!=TK_DOT || pRight!=0 ); - if( pE->op!=TK_ALL && (pE->op!=TK_DOT || pRight->op!=TK_ALL) ){ + if( pE->op!=TK_ASTERISK + && (pE->op!=TK_DOT || pRight->op!=TK_ASTERISK) + ){ /* This particular expression does not need to be expanded. */ pNew = sqlite3ExprListAppend(pParse, pNew, a[k].pExpr); @@ -103536,7 +120263,7 @@ static int selectExpander(Walker *pWalker, Select *p){ continue; } iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - zSchemaName = iDb>=0 ? db->aDb[iDb].zName : "*"; + zSchemaName = iDb>=0 ? db->aDb[iDb].zDbSName : "*"; } for(j=0; jnCol; j++){ char *zName = pTab->aCol[j].zName; @@ -103551,18 +120278,19 @@ static int selectExpander(Walker *pWalker, Select *p){ continue; } - /* If a column is marked as 'hidden' (currently only possible - ** for virtual tables), do not include it in the expanded - ** result-set list. + /* If a column is marked as 'hidden', omit it from the expanded + ** result-set list unless the SELECT has the SF_IncludeHidden + ** bit set. */ - if( IsHiddenColumn(&pTab->aCol[j]) ){ - assert(IsVirtual(pTab)); + if( (p->selFlags & SF_IncludeHidden)==0 + && IsHiddenColumn(&pTab->aCol[j]) + ){ continue; } tableSeen = 1; if( i>0 && zTName==0 ){ - if( (pFrom->jointype & JT_NATURAL)!=0 + if( (pFrom->fg.jointype & JT_NATURAL)!=0 && tableAndColumnIndex(pTabList, i, zName, 0, 0) ){ /* In a NATURAL join, omit the join columns from the @@ -103581,10 +120309,10 @@ static int selectExpander(Walker *pWalker, Select *p){ if( longNames || pTabList->nSrc>1 ){ Expr *pLeft; pLeft = sqlite3Expr(db, TK_ID, zTabName); - pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0); + pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight); if( zSchemaName ){ pLeft = sqlite3Expr(db, TK_ID, zSchemaName); - pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pExpr, 0); + pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pExpr); } if( longNames ){ zColname = sqlite3MPrintf(db, "%s.%s", zTabName, zName); @@ -103594,8 +120322,7 @@ static int selectExpander(Walker *pWalker, Select *p){ pExpr = pRight; } pNew = sqlite3ExprListAppend(pParse, pNew, pExpr); - sColname.z = zColname; - sColname.n = sqlite3Strlen30(zColname); + sqlite3TokenInit(&sColname, zColname); sqlite3ExprListSetName(pParse, pNew, &sColname, 0); if( pNew && (p->selFlags & SF_NestedFrom)!=0 ){ struct ExprList_item *pX = &pNew->a[pNew->nExpr-1]; @@ -103627,6 +120354,7 @@ static int selectExpander(Walker *pWalker, Select *p){ #if SQLITE_MAX_COLUMN if( p->pEList && p->pEList->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ sqlite3ErrorMsg(pParse, "too many columns in result set"); + return WRC_Abort; } #endif return WRC_Continue; @@ -103641,7 +120369,7 @@ static int selectExpander(Walker *pWalker, Select *p){ ** Walker.xSelectCallback is set to do something useful for every ** subquery in the parser tree. */ -static int exprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ +SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ UNUSED_PARAMETER2(NotUsed, NotUsed2); return WRC_Continue; } @@ -103662,7 +120390,7 @@ static int exprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ Walker w; memset(&w, 0, sizeof(w)); - w.xExprCallback = exprWalkNoop; + w.xExprCallback = sqlite3ExprWalkNoop; w.pParse = pParse; if( pParse->hasCompound ){ w.xSelectCallback = convertCompoundSelectToSubquery; @@ -103695,19 +120423,19 @@ static void selectAddSubqueryTypeInfo(Walker *pWalker, Select *p){ struct SrcList_item *pFrom; assert( p->selFlags & SF_Resolved ); - if( (p->selFlags & SF_HasTypeInfo)==0 ){ - p->selFlags |= SF_HasTypeInfo; - pParse = pWalker->pParse; - pTabList = p->pSrc; - for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ - Table *pTab = pFrom->pTab; - if( ALWAYS(pTab!=0) && (pTab->tabFlags & TF_Ephemeral)!=0 ){ - /* A sub-query in the FROM clause of a SELECT */ - Select *pSel = pFrom->pSelect; - if( pSel ){ - while( pSel->pPrior ) pSel = pSel->pPrior; - selectAddColumnTypeAndCollation(pParse, pTab, pSel); - } + assert( (p->selFlags & SF_HasTypeInfo)==0 ); + p->selFlags |= SF_HasTypeInfo; + pParse = pWalker->pParse; + pTabList = p->pSrc; + for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ + Table *pTab = pFrom->pTab; + assert( pTab!=0 ); + if( (pTab->tabFlags & TF_Ephemeral)!=0 ){ + /* A sub-query in the FROM clause of a SELECT */ + Select *pSel = pFrom->pSelect; + if( pSel ){ + while( pSel->pPrior ) pSel = pSel->pPrior; + sqlite3SelectAddColumnTypeAndCollation(pParse, pTab, pSel); } } } @@ -103727,7 +120455,7 @@ static void sqlite3SelectAddTypeInfo(Parse *pParse, Select *pSelect){ Walker w; memset(&w, 0, sizeof(w)); w.xSelectCallback2 = selectAddSubqueryTypeInfo; - w.xExprCallback = exprWalkNoop; + w.xExprCallback = sqlite3ExprWalkNoop; w.pParse = pParse; sqlite3WalkSelect(&w, pSelect); #endif @@ -103800,7 +120528,7 @@ static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){ "argument"); pFunc->iDistinct = -1; }else{ - KeyInfo *pKeyInfo = keyInfoFromExprList(pParse, pE->x.pList, 0); + KeyInfo *pKeyInfo = keyInfoFromExprList(pParse, pE->x.pList, 0, 0); sqlite3VdbeAddOp4(v, OP_OpenEphemeral, pFunc->iDistinct, 0, 0, (char*)pKeyInfo, P4_KEYINFO); } @@ -103819,8 +120547,8 @@ static void finalizeAggFunctions(Parse *pParse, AggInfo *pAggInfo){ for(i=0, pF=pAggInfo->aFunc; inFunc; i++, pF++){ ExprList *pList = pF->pExpr->x.pList; assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) ); - sqlite3VdbeAddOp4(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0, 0, - (void*)pF->pFunc, P4_FUNCDEF); + sqlite3VdbeAddOp2(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0); + sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF); } } @@ -103846,14 +120574,15 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ if( pList ){ nArg = pList->nExpr; regAgg = sqlite3GetTempRange(pParse, nArg); - sqlite3ExprCodeExprList(pParse, pList, regAgg, SQLITE_ECEL_DUP); + sqlite3ExprCodeExprList(pParse, pList, regAgg, 0, SQLITE_ECEL_DUP); }else{ nArg = 0; regAgg = 0; } if( pF->iDistinct>=0 ){ addrNext = sqlite3VdbeMakeLabel(v); - assert( nArg==1 ); + testcase( nArg==0 ); /* Error condition */ + testcase( nArg>1 ); /* Also an error */ codeDistinct(pParse, pF->iDistinct, addrNext, 1, regAgg); } if( pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL ){ @@ -103870,8 +120599,8 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ if( regHit==0 && pAggInfo->nAccumulator ) regHit = ++pParse->nMem; sqlite3VdbeAddOp4(v, OP_CollSeq, regHit, 0, 0, (char *)pColl, P4_COLLSEQ); } - sqlite3VdbeAddOp4(v, OP_AggStep, 0, regAgg, pF->iMem, - (void*)pF->pFunc, P4_FUNCDEF); + sqlite3VdbeAddOp3(v, OP_AggStep0, 0, regAgg, pF->iMem); + sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF); sqlite3VdbeChangeP5(v, (u8)nArg); sqlite3ExprCacheAffinityChange(pParse, regAgg, nArg); sqlite3ReleaseTempRange(pParse, regAgg, nArg); @@ -103892,7 +120621,7 @@ static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ ** values to an OP_Copy. */ if( regHit ){ - addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); + addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); VdbeCoverage(v); } sqlite3ExprCacheClear(pParse); for(i=0, pC=pAggInfo->aCol; inAccumulator; i++, pC++){ @@ -103916,10 +120645,11 @@ static void explainSimpleCount( Index *pIdx /* Index used to optimize scan, or NULL */ ){ if( pParse->explain==2 ){ + int bCover = (pIdx!=0 && (HasRowid(pTab) || !IsPrimaryKeyIndex(pIdx))); char *zEqp = sqlite3MPrintf(pParse->db, "SCAN TABLE %s%s%s", - pTab->zName, - pIdx ? " USING COVERING INDEX " : "", - pIdx ? pIdx->zName : "" + pTab->zName, + bCover ? " USING COVERING INDEX " : "", + bCover ? pIdx->zName : "" ); sqlite3VdbeAddOp4( pParse->pVdbe, OP_Explain, pParse->iSelectId, 0, 0, zEqp, P4_DYNAMIC @@ -103952,15 +120682,14 @@ SQLITE_PRIVATE int sqlite3Select( WhereInfo *pWInfo; /* Return from sqlite3WhereBegin() */ Vdbe *v; /* The virtual machine under construction */ int isAgg; /* True for select lists like "count(*)" */ - ExprList *pEList; /* List of columns to extract. */ + ExprList *pEList = 0; /* List of columns to extract. */ SrcList *pTabList; /* List of tables to select from */ Expr *pWhere; /* The WHERE clause. May be NULL */ - ExprList *pOrderBy; /* The ORDER BY clause. May be NULL */ ExprList *pGroupBy; /* The GROUP BY clause. May be NULL */ Expr *pHaving; /* The HAVING clause. May be NULL */ int rc = 1; /* Value to return from this function */ - int addrSortIndex; /* Address of an OP_OpenEphemeral instruction */ DistinctCtx sDistinct; /* Info on how to code the DISTINCT keyword */ + SortCtx sSort; /* Info on how to code the ORDER BY clause */ AggInfo sAggInfo; /* Information used by aggregate queries */ int iEnd; /* Address of the end of the query */ sqlite3 *db; /* The database connection */ @@ -103976,10 +120705,23 @@ SQLITE_PRIVATE int sqlite3Select( } if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1; memset(&sAggInfo, 0, sizeof(sAggInfo)); +#if SELECTTRACE_ENABLED + pParse->nSelectIndent++; + SELECTTRACE(1,pParse,p, ("begin processing:\n")); + if( sqlite3SelectTrace & 0x100 ){ + sqlite3TreeViewSelect(0, p, 0); + } +#endif + assert( p->pOrderBy==0 || pDest->eDest!=SRT_DistFifo ); + assert( p->pOrderBy==0 || pDest->eDest!=SRT_Fifo ); + assert( p->pOrderBy==0 || pDest->eDest!=SRT_DistQueue ); + assert( p->pOrderBy==0 || pDest->eDest!=SRT_Queue ); if( IgnorableOrderby(pDest) ){ assert(pDest->eDest==SRT_Exists || pDest->eDest==SRT_Union || - pDest->eDest==SRT_Except || pDest->eDest==SRT_Discard); + pDest->eDest==SRT_Except || pDest->eDest==SRT_Discard || + pDest->eDest==SRT_Queue || pDest->eDest==SRT_DistFifo || + pDest->eDest==SRT_DistQueue || pDest->eDest==SRT_Fifo); /* If ORDER BY makes no difference in the output then neither does ** DISTINCT so it can be removed too. */ sqlite3ExprListDelete(db, p->pOrderBy); @@ -103987,38 +120729,83 @@ SQLITE_PRIVATE int sqlite3Select( p->selFlags &= ~SF_Distinct; } sqlite3SelectPrep(pParse, p, 0); - pOrderBy = p->pOrderBy; + memset(&sSort, 0, sizeof(sSort)); + sSort.pOrderBy = p->pOrderBy; pTabList = p->pSrc; - pEList = p->pEList; if( pParse->nErr || db->mallocFailed ){ goto select_end; } + assert( p->pEList!=0 ); isAgg = (p->selFlags & SF_Aggregate)!=0; - assert( pEList!=0 ); +#if SELECTTRACE_ENABLED + if( sqlite3SelectTrace & 0x100 ){ + SELECTTRACE(0x100,pParse,p, ("after name resolution:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif - /* Begin generating code. + /* Try to flatten subqueries in the FROM clause up into the main query */ +#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) + for(i=0; !p->pPrior && inSrc; i++){ + struct SrcList_item *pItem = &pTabList->a[i]; + Select *pSub = pItem->pSelect; + int isAggSub; + Table *pTab = pItem->pTab; + if( pSub==0 ) continue; + + /* Catch mismatch in the declared columns of a view and the number of + ** columns in the SELECT on the RHS */ + if( pTab->nCol!=pSub->pEList->nExpr ){ + sqlite3ErrorMsg(pParse, "expected %d columns for '%s' but got %d", + pTab->nCol, pTab->zName, pSub->pEList->nExpr); + goto select_end; + } + + isAggSub = (pSub->selFlags & SF_Aggregate)!=0; + if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){ + /* This subquery can be absorbed into its parent. */ + if( isAggSub ){ + isAgg = 1; + p->selFlags |= SF_Aggregate; + } + i = -1; + } + pTabList = p->pSrc; + if( db->mallocFailed ) goto select_end; + if( !IgnorableOrderby(pDest) ){ + sSort.pOrderBy = p->pOrderBy; + } + } +#endif + + /* Get a pointer the VDBE under construction, allocating a new VDBE if one + ** does not already exist */ v = sqlite3GetVdbe(pParse); if( v==0 ) goto select_end; - /* If writing to memory or generating a set - ** only a single column may be output. +#ifndef SQLITE_OMIT_COMPOUND_SELECT + /* Handle compound SELECT statements using the separate multiSelect() + ** procedure. */ -#ifndef SQLITE_OMIT_SUBQUERY - if( checkForMultiColumnSelectError(pParse, pDest, pEList->nExpr) ){ - goto select_end; + if( p->pPrior ){ + rc = multiSelect(pParse, p, pDest); + explainSetInteger(pParse->iSelectId, iRestoreSelectId); +#if SELECTTRACE_ENABLED + SELECTTRACE(1,pParse,p,("end compound-select processing\n")); + pParse->nSelectIndent--; +#endif + return rc; } #endif /* Generate code for all sub-queries in the FROM clause */ #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) - for(i=0; !p->pPrior && inSrc; i++){ + for(i=0; inSrc; i++){ struct SrcList_item *pItem = &pTabList->a[i]; SelectDest dest; Select *pSub = pItem->pSelect; - int isAggSub; - if( pSub==0 ) continue; /* Sometimes the code for a subquery will be generated more than @@ -104028,7 +120815,7 @@ SQLITE_PRIVATE int sqlite3Select( ** is sufficient, though the subroutine to manifest the view does need ** to be invoked again. */ if( pItem->addrFillSub ){ - if( pItem->viaCoroutine==0 ){ + if( pItem->fg.viaCoroutine==0 ){ sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub); } continue; @@ -104043,50 +120830,55 @@ SQLITE_PRIVATE int sqlite3Select( */ pParse->nHeight += sqlite3SelectExprHeight(p); - isAggSub = (pSub->selFlags & SF_Aggregate)!=0; - if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){ - /* This subquery can be absorbed into its parent. */ - if( isAggSub ){ - isAgg = 1; - p->selFlags |= SF_Aggregate; + /* Make copies of constant WHERE-clause terms in the outer query down + ** inside the subquery. This can help the subquery to run more efficiently. + */ + if( (pItem->fg.jointype & JT_OUTER)==0 + && pushDownWhereTerms(pParse, pSub, p->pWhere, pItem->iCursor) + ){ +#if SELECTTRACE_ENABLED + if( sqlite3SelectTrace & 0x100 ){ + SELECTTRACE(0x100,pParse,p,("After WHERE-clause push-down:\n")); + sqlite3TreeViewSelect(0, p, 0); } - i = -1; - }else if( pTabList->nSrc==1 && (p->selFlags & SF_Materialize)==0 - && OptimizationEnabled(db, SQLITE_SubqCoroutine) +#endif + } + + /* Generate code to implement the subquery + ** + ** The subquery is implemented as a co-routine if all of these are true: + ** (1) The subquery is guaranteed to be the outer loop (so that it + ** does not need to be computed more than once) + ** (2) The ALL keyword after SELECT is omitted. (Applications are + ** allowed to say "SELECT ALL" instead of just "SELECT" to disable + ** the use of co-routines.) + ** (3) Co-routines are not disabled using sqlite3_test_control() + ** with SQLITE_TESTCTRL_OPTIMIZATIONS. + ** + ** TODO: Are there other reasons beside (1) to use a co-routine + ** implementation? + */ + if( i==0 + && (pTabList->nSrc==1 + || (pTabList->a[1].fg.jointype&(JT_LEFT|JT_CROSS))!=0) /* (1) */ + && (p->selFlags & SF_All)==0 /* (2) */ + && OptimizationEnabled(db, SQLITE_SubqCoroutine) /* (3) */ ){ /* Implement a co-routine that will return a single row of the result ** set on each invocation. */ - int addrTop; - int addrEof; + int addrTop = sqlite3VdbeCurrentAddr(v)+1; pItem->regReturn = ++pParse->nMem; - addrEof = ++pParse->nMem; - /* Before coding the OP_Goto to jump to the start of the main routine, - ** ensure that the jump to the verify-schema routine has already - ** been coded. Otherwise, the verify-schema would likely be coded as - ** part of the co-routine. If the main routine then accessed the - ** database before invoking the co-routine for the first time (for - ** example to initialize a LIMIT register from a sub-select), it would - ** be doing so without having verified the schema version and obtained - ** the required db locks. See ticket d6b36be38. */ - sqlite3CodeVerifySchema(pParse, -1); - sqlite3VdbeAddOp0(v, OP_Goto); - addrTop = sqlite3VdbeAddOp1(v, OP_OpenPseudo, pItem->iCursor); - sqlite3VdbeChangeP5(v, 1); - VdbeComment((v, "coroutine for %s", pItem->pTab->zName)); + sqlite3VdbeAddOp3(v, OP_InitCoroutine, pItem->regReturn, 0, addrTop); + VdbeComment((v, "%s", pItem->pTab->zName)); pItem->addrFillSub = addrTop; - sqlite3VdbeAddOp2(v, OP_Integer, 0, addrEof); - sqlite3VdbeChangeP5(v, 1); sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn); explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); sqlite3Select(pParse, pSub, &dest); - pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow; - pItem->viaCoroutine = 1; - sqlite3VdbeChangeP2(v, addrTop, dest.iSdst); - sqlite3VdbeChangeP3(v, addrTop, dest.nSdst); - sqlite3VdbeAddOp2(v, OP_Integer, 1, addrEof); - sqlite3VdbeAddOp1(v, OP_Yield, pItem->regReturn); - VdbeComment((v, "end %s", pItem->pTab->zName)); + pItem->pTab->nRowLogEst = pSub->nSelectRow; + pItem->fg.viaCoroutine = 1; + pItem->regResult = dest.iSdst; + sqlite3VdbeEndCoroutine(v, pItem->regReturn); sqlite3VdbeJumpHere(v, addrTop-1); sqlite3ClearTempRegCache(pParse); }else{ @@ -104102,76 +120894,45 @@ SQLITE_PRIVATE int sqlite3Select( pItem->regReturn = ++pParse->nMem; topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn); pItem->addrFillSub = topAddr+1; - VdbeNoopComment((v, "materialize %s", pItem->pTab->zName)); - if( pItem->isCorrelated==0 ){ + if( pItem->fg.isCorrelated==0 ){ /* If the subquery is not correlated and if we are not inside of ** a trigger, then we only need to compute the value of the subquery ** once. */ - onceAddr = sqlite3CodeOnce(pParse); + onceAddr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + VdbeComment((v, "materialize \"%s\"", pItem->pTab->zName)); + }else{ + VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName)); } sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); sqlite3Select(pParse, pSub, &dest); - pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow; + pItem->pTab->nRowLogEst = pSub->nSelectRow; if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr); retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn); VdbeComment((v, "end %s", pItem->pTab->zName)); sqlite3VdbeChangeP1(v, topAddr, retAddr); sqlite3ClearTempRegCache(pParse); } - if( /*pParse->nErr ||*/ db->mallocFailed ){ - goto select_end; - } + if( db->mallocFailed ) goto select_end; pParse->nHeight -= sqlite3SelectExprHeight(p); - pTabList = p->pSrc; - if( !IgnorableOrderby(pDest) ){ - pOrderBy = p->pOrderBy; - } } - pEList = p->pEList; #endif + + /* Various elements of the SELECT copied into local variables for + ** convenience */ + pEList = p->pEList; pWhere = p->pWhere; pGroupBy = p->pGroupBy; pHaving = p->pHaving; sDistinct.isTnct = (p->selFlags & SF_Distinct)!=0; -#ifndef SQLITE_OMIT_COMPOUND_SELECT - /* If there is are a sequence of queries, do the earlier ones first. - */ - if( p->pPrior ){ - if( p->pRightmost==0 ){ - Select *pLoop, *pRight = 0; - int cnt = 0; - int mxSelect; - for(pLoop=p; pLoop; pLoop=pLoop->pPrior, cnt++){ - pLoop->pRightmost = p; - pLoop->pNext = pRight; - pRight = pLoop; - } - mxSelect = db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT]; - if( mxSelect && cnt>mxSelect ){ - sqlite3ErrorMsg(pParse, "too many terms in compound SELECT"); - goto select_end; - } - } - rc = multiSelect(pParse, p, pDest); - explainSetInteger(pParse->iSelectId, iRestoreSelectId); - return rc; +#if SELECTTRACE_ENABLED + if( sqlite3SelectTrace & 0x400 ){ + SELECTTRACE(0x400,pParse,p,("After all FROM-clause analysis:\n")); + sqlite3TreeViewSelect(0, p, 0); } #endif - /* If there is both a GROUP BY and an ORDER BY clause and they are - ** identical, then disable the ORDER BY clause since the GROUP BY - ** will cause elements to come out in the correct order. This is - ** an optimization - the correct answer should result regardless. - ** Use the SQLITE_GroupByOrder flag with SQLITE_TESTCTRL_OPTIMIZER - ** to disable this optimization for testing purposes. - */ - if( sqlite3ExprListCompare(p->pGroupBy, pOrderBy, -1)==0 - && OptimizationEnabled(db, SQLITE_GroupByOrder) ){ - pOrderBy = 0; - } - /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and ** if the select-list is the same as the ORDER BY list, then this query ** can be rewritten as a GROUP BY. In other words, this: @@ -104180,7 +120941,7 @@ SQLITE_PRIVATE int sqlite3Select( ** ** is transformed to: ** - ** SELECT xyz FROM ... GROUP BY xyz + ** SELECT xyz FROM ... GROUP BY xyz ORDER BY xyz ** ** The second form is preferred as a single index (or temp-table) may be ** used for both the ORDER BY and DISTINCT processing. As originally @@ -104188,35 +120949,42 @@ SQLITE_PRIVATE int sqlite3Select( ** BY and DISTINCT, and an index or separate temp-table for the other. */ if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct - && sqlite3ExprListCompare(pOrderBy, p->pEList, -1)==0 + && sqlite3ExprListCompare(sSort.pOrderBy, pEList, -1)==0 ){ p->selFlags &= ~SF_Distinct; - p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0); - pGroupBy = p->pGroupBy; - pOrderBy = 0; + pGroupBy = p->pGroupBy = sqlite3ExprListDup(db, pEList, 0); /* Notice that even thought SF_Distinct has been cleared from p->selFlags, ** the sDistinct.isTnct is still set. Hence, isTnct represents the ** original setting of the SF_Distinct flag, not the current setting */ assert( sDistinct.isTnct ); + +#if SELECTTRACE_ENABLED + if( sqlite3SelectTrace & 0x400 ){ + SELECTTRACE(0x400,pParse,p,("Transform DISTINCT into GROUP BY:\n")); + sqlite3TreeViewSelect(0, p, 0); + } +#endif } - /* If there is an ORDER BY clause, then this sorting - ** index might end up being unused if the data can be - ** extracted in pre-sorted order. If that is the case, then the - ** OP_OpenEphemeral instruction will be changed to an OP_Noop once - ** we figure out that the sorting index is not needed. The addrSortIndex - ** variable is used to facilitate that change. + /* If there is an ORDER BY clause, then create an ephemeral index to + ** do the sorting. But this sorting ephemeral index might end up + ** being unused if the data can be extracted in pre-sorted order. + ** If that is the case, then the OP_OpenEphemeral instruction will be + ** changed to an OP_Noop once we figure out that the sorting index is + ** not needed. The sSort.addrSortIndex variable is used to facilitate + ** that change. */ - if( pOrderBy ){ + if( sSort.pOrderBy ){ KeyInfo *pKeyInfo; - pKeyInfo = keyInfoFromExprList(pParse, pOrderBy, 0); - pOrderBy->iECursor = pParse->nTab++; - p->addrOpenEphm[2] = addrSortIndex = + pKeyInfo = keyInfoFromExprList(pParse, sSort.pOrderBy, 0, pEList->nExpr); + sSort.iECursor = pParse->nTab++; + sSort.addrSortIndex = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, - pOrderBy->iECursor, pOrderBy->nExpr+2, 0, - (char*)pKeyInfo, P4_KEYINFO); + sSort.iECursor, sSort.pOrderBy->nExpr+1+pEList->nExpr, 0, + (char*)pKeyInfo, P4_KEYINFO + ); }else{ - addrSortIndex = -1; + sSort.addrSortIndex = -1; } /* If the output is destined for a temporary table, open that table. @@ -104228,21 +120996,23 @@ SQLITE_PRIVATE int sqlite3Select( /* Set the limiter. */ iEnd = sqlite3VdbeMakeLabel(v); - p->nSelectRow = LARGEST_INT64; + if( (p->selFlags & SF_FixedLimit)==0 ){ + p->nSelectRow = 320; /* 4 billion rows */ + } computeLimitRegisters(pParse, p, iEnd); - if( p->iLimit==0 && addrSortIndex>=0 ){ - sqlite3VdbeGetOp(v, addrSortIndex)->opcode = OP_SorterOpen; - p->selFlags |= SF_UseSorter; + if( p->iLimit==0 && sSort.addrSortIndex>=0 ){ + sqlite3VdbeChangeOpcode(v, sSort.addrSortIndex, OP_SorterOpen); + sSort.sortFlags |= SORTFLAG_UseSorter; } - /* Open a virtual index to use for the distinct set. + /* Open an ephemeral index to use for the distinct set. */ if( p->selFlags & SF_Distinct ){ sDistinct.tabTnct = pParse->nTab++; sDistinct.addrTnct = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, - sDistinct.tabTnct, 0, 0, - (char*)keyInfoFromExprList(pParse, p->pEList, 0), - P4_KEYINFO); + sDistinct.tabTnct, 0, 0, + (char*)keyInfoFromExprList(pParse, p->pEList,0,0), + P4_KEYINFO); sqlite3VdbeChangeP5(v, BTREE_UNORDERED); sDistinct.eTnctType = WHERE_DISTINCT_UNORDERED; }else{ @@ -104252,10 +121022,12 @@ SQLITE_PRIVATE int sqlite3Select( if( !isAgg && pGroupBy==0 ){ /* No aggregate functions and no GROUP BY clause */ u16 wctrlFlags = (sDistinct.isTnct ? WHERE_WANT_DISTINCT : 0); + assert( WHERE_USE_LIMIT==SF_FixedLimit ); + wctrlFlags |= p->selFlags & SF_FixedLimit; /* Begin the database scan. */ - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pOrderBy, p->pEList, - wctrlFlags, 0); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, sSort.pOrderBy, + p->pEList, wctrlFlags, p->nSelectRow); if( pWInfo==0 ) goto select_end; if( sqlite3WhereOutputRowCount(pWInfo) < p->nSelectRow ){ p->nSelectRow = sqlite3WhereOutputRowCount(pWInfo); @@ -104263,19 +121035,24 @@ SQLITE_PRIVATE int sqlite3Select( if( sDistinct.isTnct && sqlite3WhereIsDistinct(pWInfo) ){ sDistinct.eTnctType = sqlite3WhereIsDistinct(pWInfo); } - if( pOrderBy && sqlite3WhereIsOrdered(pWInfo) ) pOrderBy = 0; + if( sSort.pOrderBy ){ + sSort.nOBSat = sqlite3WhereIsOrdered(pWInfo); + sSort.bOrderedInnerLoop = sqlite3WhereOrderedInnerLoop(pWInfo); + if( sSort.nOBSat==sSort.pOrderBy->nExpr ){ + sSort.pOrderBy = 0; + } + } /* If sorting index that was created by a prior OP_OpenEphemeral ** instruction ended up not being needed, then change the OP_OpenEphemeral ** into an OP_Noop. */ - if( addrSortIndex>=0 && pOrderBy==0 ){ - sqlite3VdbeChangeToNoop(v, addrSortIndex); - p->addrOpenEphm[2] = -1; + if( sSort.addrSortIndex>=0 && sSort.pOrderBy==0 ){ + sqlite3VdbeChangeToNoop(v, sSort.addrSortIndex); } /* Use the standard inner loop. */ - selectInnerLoop(pParse, p, pEList, -1, pOrderBy, &sDistinct, pDest, + selectInnerLoop(pParse, p, pEList, -1, &sSort, &sDistinct, pDest, sqlite3WhereContinueLabel(pWInfo), sqlite3WhereBreakLabel(pWInfo)); @@ -104296,6 +121073,7 @@ SQLITE_PRIVATE int sqlite3Select( int addrEnd; /* End of processing for this SELECT */ int sortPTab = 0; /* Pseudotable used to decode sorting results */ int sortOut = 0; /* Output register from the sorter */ + int orderByGrp = 0; /* True if the GROUP BY and ORDER BY are the same */ /* Remove any and all aliases between the result set and the ** GROUP BY clause. @@ -104310,11 +121088,24 @@ SQLITE_PRIVATE int sqlite3Select( for(k=pGroupBy->nExpr, pItem=pGroupBy->a; k>0; k--, pItem++){ pItem->u.x.iAlias = 0; } - if( p->nSelectRow>100 ) p->nSelectRow = 100; + assert( 66==sqlite3LogEst(100) ); + if( p->nSelectRow>66 ) p->nSelectRow = 66; }else{ - p->nSelectRow = 1; + assert( 0==sqlite3LogEst(1) ); + p->nSelectRow = 0; } + /* If there is both a GROUP BY and an ORDER BY clause and they are + ** identical, then it may be possible to disable the ORDER BY clause + ** on the grounds that the GROUP BY will cause elements to come out + ** in the correct order. It also may not - the GROUP BY might use a + ** database index that causes rows to be grouped together as required + ** but not actually sorted. Either way, record the fact that the + ** ORDER BY and GROUP BY clauses are the same by setting the orderByGrp + ** variable. */ + if( sqlite3ExprListCompare(pGroupBy, sSort.pOrderBy, -1)==0 ){ + orderByGrp = 1; + } /* Create a label to jump to when we want to abort the query */ addrEnd = sqlite3VdbeMakeLabel(v); @@ -104328,10 +121119,10 @@ SQLITE_PRIVATE int sqlite3Select( sNC.pSrcList = pTabList; sNC.pAggInfo = &sAggInfo; sAggInfo.mnReg = pParse->nMem+1; - sAggInfo.nSortingColumn = pGroupBy ? pGroupBy->nExpr+1 : 0; + sAggInfo.nSortingColumn = pGroupBy ? pGroupBy->nExpr : 0; sAggInfo.pGroupBy = pGroupBy; sqlite3ExprAnalyzeAggList(&sNC, pEList); - sqlite3ExprAnalyzeAggList(&sNC, pOrderBy); + sqlite3ExprAnalyzeAggList(&sNC, sSort.pOrderBy); if( pHaving ){ sqlite3ExprAnalyzeAggregates(&sNC, pHaving); } @@ -104350,7 +121141,7 @@ SQLITE_PRIVATE int sqlite3Select( */ if( pGroupBy ){ KeyInfo *pKeyInfo; /* Keying information for the group by clause */ - int j1; /* A-vs-B comparision jump */ + int addr1; /* A-vs-B comparision jump */ int addrOutputRow; /* Start of subroutine that outputs a result row */ int regOutputRow; /* Return address register for output subroutine */ int addrSetAbort; /* Set the abort flag and return */ @@ -104365,7 +121156,7 @@ SQLITE_PRIVATE int sqlite3Select( ** will be converted into a Noop. */ sAggInfo.sortingIdx = pParse->nTab++; - pKeyInfo = keyInfoFromExprList(pParse, pGroupBy, 0); + pKeyInfo = keyInfoFromExprList(pParse, pGroupBy, 0, sAggInfo.nColumn); addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen, sAggInfo.sortingIdx, sAggInfo.nSortingColumn, 0, (char*)pKeyInfo, P4_KEYINFO); @@ -104394,10 +121185,11 @@ SQLITE_PRIVATE int sqlite3Select( ** in the right order to begin with. */ sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pGroupBy, 0, - WHERE_GROUPBY, 0); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pGroupBy, 0, + WHERE_GROUPBY | (orderByGrp ? WHERE_SORTBYGROUP : 0), 0 + ); if( pWInfo==0 ) goto select_end; - if( sqlite3WhereIsOrdered(pWInfo) ){ + if( sqlite3WhereIsOrdered(pWInfo)==pGroupBy->nExpr ){ /* The optimizer is able to deliver rows in group by order so ** we do not have to sort. The OP_OpenEphemeral table will be ** cancelled later because we still need to use the pKeyInfo @@ -104420,8 +121212,8 @@ SQLITE_PRIVATE int sqlite3Select( groupBySort = 1; nGroupBy = pGroupBy->nExpr; - nCol = nGroupBy + 1; - j = nGroupBy+1; + nCol = nGroupBy; + j = nGroupBy; for(i=0; i=j ){ nCol++; @@ -104430,20 +121222,14 @@ SQLITE_PRIVATE int sqlite3Select( } regBase = sqlite3GetTempRange(pParse, nCol); sqlite3ExprCacheClear(pParse); - sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0); - sqlite3VdbeAddOp2(v, OP_Sequence, sAggInfo.sortingIdx,regBase+nGroupBy); - j = nGroupBy+1; + sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0, 0); + j = nGroupBy; for(i=0; iiSorterColumn>=j ){ int r1 = j + regBase; - int r2; - - r2 = sqlite3ExprCodeGetColumn(pParse, - pCol->pTab, pCol->iColumn, pCol->iTable, r1, 0); - if( r1!=r2 ){ - sqlite3VdbeAddOp2(v, OP_SCopy, r2, r1); - } + sqlite3ExprCodeGetColumnToReg(pParse, + pCol->pTab, pCol->iColumn, pCol->iTable, r1); j++; } } @@ -104457,9 +121243,24 @@ SQLITE_PRIVATE int sqlite3Select( sortOut = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol); sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd); - VdbeComment((v, "GROUP BY sort")); + VdbeComment((v, "GROUP BY sort")); VdbeCoverage(v); sAggInfo.useSortingIdx = 1; sqlite3ExprCacheClear(pParse); + + } + + /* If the index or temporary table used by the GROUP BY sort + ** will naturally deliver rows in the order required by the ORDER BY + ** clause, cancel the ephemeral table open coded earlier. + ** + ** This is an optimization - the correct answer should result regardless. + ** Use the SQLITE_GroupByOrder flag with SQLITE_TESTCTRL_OPTIMIZER to + ** disable this optimization for testing purposes. */ + if( orderByGrp && OptimizationEnabled(db, SQLITE_GroupByOrder) + && (groupBySort || sqlite3WhereIsSorted(pWInfo)) + ){ + sSort.pOrderBy = 0; + sqlite3VdbeChangeToNoop(v, sSort.addrSortIndex); } /* Evaluate the current GROUP BY terms and store in b0, b1, b2... @@ -104470,12 +121271,12 @@ SQLITE_PRIVATE int sqlite3Select( addrTopOfLoop = sqlite3VdbeCurrentAddr(v); sqlite3ExprCacheClear(pParse); if( groupBySort ){ - sqlite3VdbeAddOp2(v, OP_SorterData, sAggInfo.sortingIdx, sortOut); + sqlite3VdbeAddOp3(v, OP_SorterData, sAggInfo.sortingIdx, + sortOut, sortPTab); } for(j=0; jnExpr; j++){ if( groupBySort ){ sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j); - if( j==0 ) sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); }else{ sAggInfo.directMode = 1; sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j); @@ -104483,8 +121284,8 @@ SQLITE_PRIVATE int sqlite3Select( } sqlite3VdbeAddOp4(v, OP_Compare, iAMem, iBMem, pGroupBy->nExpr, (char*)sqlite3KeyInfoRef(pKeyInfo), P4_KEYINFO); - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp3(v, OP_Jump, j1+1, 0, j1+1); + addr1 = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp3(v, OP_Jump, addr1+1, 0, addr1+1); VdbeCoverage(v); /* Generate code that runs whenever the GROUP BY changes. ** Changes in the GROUP BY are detected by the previous code @@ -104498,7 +121299,7 @@ SQLITE_PRIVATE int sqlite3Select( sqlite3ExprCodeMove(pParse, iBMem, iAMem, pGroupBy->nExpr); sqlite3VdbeAddOp2(v, OP_Gosub, regOutputRow, addrOutputRow); VdbeComment((v, "output one row")); - sqlite3VdbeAddOp2(v, OP_IfPos, iAbortFlag, addrEnd); + sqlite3VdbeAddOp2(v, OP_IfPos, iAbortFlag, addrEnd); VdbeCoverage(v); VdbeComment((v, "check abort flag")); sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset); VdbeComment((v, "reset accumulator")); @@ -104506,7 +121307,7 @@ SQLITE_PRIVATE int sqlite3Select( /* Update the aggregate accumulators based on the content of ** the current row */ - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); updateAccumulator(pParse, &sAggInfo); sqlite3VdbeAddOp2(v, OP_Integer, 1, iUseFlag); VdbeComment((v, "indicate data in accumulator")); @@ -104515,6 +121316,7 @@ SQLITE_PRIVATE int sqlite3Select( */ if( groupBySort ){ sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop); + VdbeCoverage(v); }else{ sqlite3WhereEnd(pWInfo); sqlite3VdbeChangeToNoop(v, addrSortingIdx); @@ -104527,7 +121329,7 @@ SQLITE_PRIVATE int sqlite3Select( /* Jump over the subroutines */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEnd); + sqlite3VdbeGoto(v, addrEnd); /* Generate a subroutine that outputs a single row of the result ** set. This subroutine first looks at the iUseFlag. If iUseFlag @@ -104543,11 +121345,12 @@ SQLITE_PRIVATE int sqlite3Select( sqlite3VdbeResolveLabel(v, addrOutputRow); addrOutputRow = sqlite3VdbeCurrentAddr(v); sqlite3VdbeAddOp2(v, OP_IfPos, iUseFlag, addrOutputRow+2); + VdbeCoverage(v); VdbeComment((v, "Groupby result generator entry point")); sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); finalizeAggFunctions(pParse, &sAggInfo); sqlite3ExprIfFalse(pParse, pHaving, addrOutputRow+1, SQLITE_JUMPIFNULL); - selectInnerLoop(pParse, p, p->pEList, -1, pOrderBy, + selectInnerLoop(pParse, p, p->pEList, -1, &sSort, &sDistinct, pDest, addrOutputRow+1, addrSetAbort); sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); @@ -104661,7 +121464,8 @@ SQLITE_PRIVATE int sqlite3Select( if( flag ){ pMinMax = sqlite3ExprListDup(db, pMinMax, 0); pDel = pMinMax; - if( pMinMax && !db->mallocFailed ){ + assert( db->mallocFailed || pMinMax!=0 ); + if( !db->mallocFailed ){ pMinMax->a[0].sortOrder = flag!=WHERE_ORDERBY_MIN ?1:0; pMinMax->a[0].pExpr->op = TK_COLUMN; } @@ -104672,15 +121476,15 @@ SQLITE_PRIVATE int sqlite3Select( ** of output. */ resetAccumulator(pParse, &sAggInfo); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pMinMax,0,flag,0); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, pMinMax, 0,flag,0); if( pWInfo==0 ){ sqlite3ExprListDelete(db, pDel); goto select_end; } updateAccumulator(pParse, &sAggInfo); assert( pMinMax==0 || pMinMax->nExpr==1 ); - if( sqlite3WhereIsOrdered(pWInfo) ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, sqlite3WhereBreakLabel(pWInfo)); + if( sqlite3WhereIsOrdered(pWInfo)>0 ){ + sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo)); VdbeComment((v, "%s() by index", (flag==WHERE_ORDERBY_MIN?"min":"max"))); } @@ -104688,7 +121492,7 @@ SQLITE_PRIVATE int sqlite3Select( finalizeAggFunctions(pParse, &sAggInfo); } - pOrderBy = 0; + sSort.pOrderBy = 0; sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL); selectInnerLoop(pParse, p, p->pEList, -1, 0, 0, pDest, addrEnd, addrEnd); @@ -104705,19 +121509,19 @@ SQLITE_PRIVATE int sqlite3Select( /* If there is an ORDER BY clause, then we need to sort the results ** and send them to the callback one by one. */ - if( pOrderBy ){ - explainTempTable(pParse, "ORDER BY"); - generateSortTail(pParse, p, v, pEList->nExpr, pDest); + if( sSort.pOrderBy ){ + explainTempTable(pParse, + sSort.nOBSat>0 ? "RIGHT PART OF ORDER BY":"ORDER BY"); + generateSortTail(pParse, p, &sSort, pEList->nExpr, pDest); } /* Jump here to skip this query */ sqlite3VdbeResolveLabel(v, iEnd); - /* The SELECT was successfully coded. Set the return code to 0 - ** to indicate no errors. - */ - rc = 0; + /* The SELECT has been coded. If there is an error in the Parse structure, + ** set the return code to 1. Otherwise 0. */ + rc = (pParse->nErr>0); /* Control jumps to here if an error is encountered above, or upon ** successful coding of the SELECT. @@ -104733,108 +121537,13 @@ select_end: sqlite3DbFree(db, sAggInfo.aCol); sqlite3DbFree(db, sAggInfo.aFunc); +#if SELECTTRACE_ENABLED + SELECTTRACE(1,pParse,p,("end processing\n")); + pParse->nSelectIndent--; +#endif return rc; } -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) -/* -** Generate a human-readable description of a the Select object. -*/ -static void explainOneSelect(Vdbe *pVdbe, Select *p){ - sqlite3ExplainPrintf(pVdbe, "SELECT "); - if( p->selFlags & (SF_Distinct|SF_Aggregate) ){ - if( p->selFlags & SF_Distinct ){ - sqlite3ExplainPrintf(pVdbe, "DISTINCT "); - } - if( p->selFlags & SF_Aggregate ){ - sqlite3ExplainPrintf(pVdbe, "agg_flag "); - } - sqlite3ExplainNL(pVdbe); - sqlite3ExplainPrintf(pVdbe, " "); - } - sqlite3ExplainExprList(pVdbe, p->pEList); - sqlite3ExplainNL(pVdbe); - if( p->pSrc && p->pSrc->nSrc ){ - int i; - sqlite3ExplainPrintf(pVdbe, "FROM "); - sqlite3ExplainPush(pVdbe); - for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - sqlite3ExplainPrintf(pVdbe, "{%d,*} = ", pItem->iCursor); - if( pItem->pSelect ){ - sqlite3ExplainSelect(pVdbe, pItem->pSelect); - if( pItem->pTab ){ - sqlite3ExplainPrintf(pVdbe, " (tabname=%s)", pItem->pTab->zName); - } - }else if( pItem->zName ){ - sqlite3ExplainPrintf(pVdbe, "%s", pItem->zName); - } - if( pItem->zAlias ){ - sqlite3ExplainPrintf(pVdbe, " (AS %s)", pItem->zAlias); - } - if( pItem->jointype & JT_LEFT ){ - sqlite3ExplainPrintf(pVdbe, " LEFT-JOIN"); - } - sqlite3ExplainNL(pVdbe); - } - sqlite3ExplainPop(pVdbe); - } - if( p->pWhere ){ - sqlite3ExplainPrintf(pVdbe, "WHERE "); - sqlite3ExplainExpr(pVdbe, p->pWhere); - sqlite3ExplainNL(pVdbe); - } - if( p->pGroupBy ){ - sqlite3ExplainPrintf(pVdbe, "GROUPBY "); - sqlite3ExplainExprList(pVdbe, p->pGroupBy); - sqlite3ExplainNL(pVdbe); - } - if( p->pHaving ){ - sqlite3ExplainPrintf(pVdbe, "HAVING "); - sqlite3ExplainExpr(pVdbe, p->pHaving); - sqlite3ExplainNL(pVdbe); - } - if( p->pOrderBy ){ - sqlite3ExplainPrintf(pVdbe, "ORDERBY "); - sqlite3ExplainExprList(pVdbe, p->pOrderBy); - sqlite3ExplainNL(pVdbe); - } - if( p->pLimit ){ - sqlite3ExplainPrintf(pVdbe, "LIMIT "); - sqlite3ExplainExpr(pVdbe, p->pLimit); - sqlite3ExplainNL(pVdbe); - } - if( p->pOffset ){ - sqlite3ExplainPrintf(pVdbe, "OFFSET "); - sqlite3ExplainExpr(pVdbe, p->pOffset); - sqlite3ExplainNL(pVdbe); - } -} -SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe *pVdbe, Select *p){ - if( p==0 ){ - sqlite3ExplainPrintf(pVdbe, "(null-select)"); - return; - } - while( p->pPrior ){ - p->pPrior->pNext = p; - p = p->pPrior; - } - sqlite3ExplainPush(pVdbe); - while( p ){ - explainOneSelect(pVdbe, p); - p = p->pNext; - if( p==0 ) break; - sqlite3ExplainNL(pVdbe); - sqlite3ExplainPrintf(pVdbe, "%s\n", selectOpName(p->op)); - } - sqlite3ExplainPrintf(pVdbe, "END"); - sqlite3ExplainPop(pVdbe); -} - -/* End of the structure debug printing code -*****************************************************************************/ -#endif /* defined(SQLITE_ENABLE_TREE_EXPLAIN) */ - /************** End of select.c **********************************************/ /************** Begin file table.c *******************************************/ /* @@ -104855,8 +121564,7 @@ SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe *pVdbe, Select *p){ ** These routines are in a separate files so that they will not be linked ** if they are not used. */ -/* #include */ -/* #include */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_GET_TABLE @@ -104867,10 +121575,10 @@ SQLITE_PRIVATE void sqlite3ExplainSelect(Vdbe *pVdbe, Select *p){ typedef struct TabResult { char **azResult; /* Accumulated output */ char *zErrMsg; /* Error message text, if an error occurs */ - int nAlloc; /* Slots allocated for azResult[] */ - int nRow; /* Number of rows in the result */ - int nColumn; /* Number of columns in the result */ - int nData; /* Slots used in azResult[]. (nRow+1)*nColumn */ + u32 nAlloc; /* Slots allocated for azResult[] */ + u32 nRow; /* Number of rows in the result */ + u32 nColumn; /* Number of columns in the result */ + u32 nData; /* Slots used in azResult[]. (nRow+1)*nColumn */ int rc; /* Return code from sqlite3_exec() */ } TabResult; @@ -104896,7 +121604,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){ if( p->nData + need > p->nAlloc ){ char **azNew; p->nAlloc = p->nAlloc*2 + need; - azNew = sqlite3_realloc( p->azResult, sizeof(char*)*p->nAlloc ); + azNew = sqlite3_realloc64( p->azResult, sizeof(char*)*p->nAlloc ); if( azNew==0 ) goto malloc_failed; p->azResult = azNew; } @@ -104911,7 +121619,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){ if( z==0 ) goto malloc_failed; p->azResult[p->nData++] = z; } - }else if( p->nColumn!=nCol ){ + }else if( (int)p->nColumn!=nCol ){ sqlite3_free(p->zErrMsg); p->zErrMsg = sqlite3_mprintf( "sqlite3_get_table() called with two or more incompatible queries" @@ -104928,7 +121636,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){ z = 0; }else{ int n = sqlite3Strlen30(argv[i])+1; - z = sqlite3_malloc( n ); + z = sqlite3_malloc64( n ); if( z==0 ) goto malloc_failed; memcpy(z, argv[i], n); } @@ -104939,7 +121647,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){ return 0; malloc_failed: - p->rc = SQLITE_NOMEM; + p->rc = SQLITE_NOMEM_BKPT; return 1; } @@ -104964,6 +121672,9 @@ SQLITE_API int sqlite3_get_table( int rc; TabResult res; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || pazResult==0 ) return SQLITE_MISUSE_BKPT; +#endif *pazResult = 0; if( pnColumn ) *pnColumn = 0; if( pnRow ) *pnRow = 0; @@ -104974,10 +121685,10 @@ SQLITE_API int sqlite3_get_table( res.nData = 1; res.nAlloc = 20; res.rc = SQLITE_OK; - res.azResult = sqlite3_malloc(sizeof(char*)*res.nAlloc ); + res.azResult = sqlite3_malloc64(sizeof(char*)*res.nAlloc ); if( res.azResult==0 ){ db->errCode = SQLITE_NOMEM; - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } res.azResult[0] = 0; rc = sqlite3_exec(db, zSql, sqlite3_get_table_cb, &res, pzErrMsg); @@ -105002,11 +121713,11 @@ SQLITE_API int sqlite3_get_table( } if( res.nAlloc>res.nData ){ char **azNew; - azNew = sqlite3_realloc( res.azResult, sizeof(char*)*res.nData ); + azNew = sqlite3_realloc64( res.azResult, sizeof(char*)*res.nData ); if( azNew==0 ){ sqlite3_free_table(&res.azResult[1]); db->errCode = SQLITE_NOMEM; - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } res.azResult = azNew; } @@ -105020,7 +121731,7 @@ SQLITE_API int sqlite3_get_table( ** This routine frees the space the sqlite3_get_table() malloced. */ SQLITE_API void sqlite3_free_table( - char **azResult /* Result returned from from sqlite3_get_table() */ + char **azResult /* Result returned from sqlite3_get_table() */ ){ if( azResult ){ int i, n; @@ -105048,6 +121759,7 @@ SQLITE_API void sqlite3_free_table( ************************************************************************* ** This file contains the implementation for TRIGGERs */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_TRIGGER /* @@ -105133,7 +121845,6 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( int iDb; /* The database to store the trigger in */ Token *pName; /* The unqualified db name */ DbFixer sFix; /* State vector for the DB fixer */ - int iTabDb; /* Index of the database holding pTab */ assert( pName1!=0 ); /* pName1->z might be NULL, but not pName1 itself */ assert( pName2!=0 ); @@ -105164,7 +121875,7 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( ** ^^^^^^^^ ** ** To maintain backwards compatibility, ignore the database - ** name on pTableName if we are reparsing our of SQLITE_MASTER. + ** name on pTableName if we are reparsing out of SQLITE_MASTER. */ if( db->init.busy && iDb!=1 ){ sqlite3DbFree(db, pTableName->a[0].zDatabase); @@ -105217,8 +121928,7 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( goto trigger_cleanup; } assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash), - zName, sqlite3Strlen30(zName)) ){ + if( sqlite3HashFind(&(db->aDb[iDb].pSchema->trigHash),zName) ){ if( !noErr ){ sqlite3ErrorMsg(pParse, "trigger %T already exists", pName); }else{ @@ -105231,7 +121941,6 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( /* Do not create a trigger on a system table */ if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){ sqlite3ErrorMsg(pParse, "cannot create trigger on system table"); - pParse->nErr++; goto trigger_cleanup; } @@ -105248,13 +121957,13 @@ SQLITE_PRIVATE void sqlite3BeginTrigger( " trigger on table: %S", pTableName, 0); goto trigger_cleanup; } - iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema); #ifndef SQLITE_OMIT_AUTHORIZATION { + int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema); int code = SQLITE_CREATE_TRIGGER; - const char *zDb = db->aDb[iTabDb].zName; - const char *zDbTrig = isTemp ? db->aDb[1].zName : zDb; + const char *zDb = db->aDb[iTabDb].zDbSName; + const char *zDbTrig = isTemp ? db->aDb[1].zDbSName : zDb; if( iTabDb==1 || isTemp ) code = SQLITE_CREATE_TEMP_TRIGGER; if( sqlite3AuthCheck(pParse, code, zName, pTab->zName, zDbTrig) ){ goto trigger_cleanup; @@ -105326,8 +122035,7 @@ SQLITE_PRIVATE void sqlite3FinishTrigger( pStepList->pTrig = pTrig; pStepList = pStepList->pNext; } - nameToken.z = pTrig->zName; - nameToken.n = sqlite3Strlen30(nameToken.z); + sqlite3TokenInit(&nameToken, pTrig->zName); sqlite3FixInit(&sFix, pParse, iDb, "trigger", &nameToken); if( sqlite3FixTriggerStep(&sFix, pTrig->step_list) || sqlite3FixExpr(&sFix, pTrig->pWhen) @@ -105349,7 +122057,7 @@ SQLITE_PRIVATE void sqlite3FinishTrigger( z = sqlite3DbStrNDup(db, (char*)pAll->z, pAll->n); sqlite3NestedParse(pParse, "INSERT INTO %Q.%s VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), zName, + db->aDb[iDb].zDbSName, MASTER_NAME, zName, pTrig->table, z); sqlite3DbFree(db, z); sqlite3ChangeCookie(pParse, iDb); @@ -105361,13 +122069,12 @@ SQLITE_PRIVATE void sqlite3FinishTrigger( Trigger *pLink = pTrig; Hash *pHash = &db->aDb[iDb].pSchema->trigHash; assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pTrig = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), pTrig); + pTrig = sqlite3HashInsert(pHash, zName, pTrig); if( pTrig ){ - db->mallocFailed = 1; + sqlite3OomFault(db); }else if( pLink->pSchema==pLink->pTabSchema ){ Table *pTab; - int n = sqlite3Strlen30(pLink->table); - pTab = sqlite3HashFind(&pLink->pTabSchema->tblHash, pLink->table, n); + pTab = sqlite3HashFind(&pLink->pTabSchema->tblHash, pLink->table); assert( pTab!=0 ); pLink->pNext = pTab->pTrigger; pTab->pTrigger = pLink; @@ -105412,12 +122119,12 @@ static TriggerStep *triggerStepAllocate( ){ TriggerStep *pTriggerStep; - pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep) + pName->n); + pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep) + pName->n + 1); if( pTriggerStep ){ char *z = (char*)&pTriggerStep[1]; memcpy(z, pName->z, pName->n); - pTriggerStep->target.z = z; - pTriggerStep->target.n = pName->n; + sqlite3Dequote(z); + pTriggerStep->zTarget = z; pTriggerStep->op = op; } return pTriggerStep; @@ -105526,7 +122233,6 @@ SQLITE_PRIVATE void sqlite3DropTrigger(Parse *pParse, SrcList *pName, int noErr) int i; const char *zDb; const char *zName; - int nName; sqlite3 *db = pParse->db; if( db->mallocFailed ) goto drop_trigger_cleanup; @@ -105537,13 +122243,12 @@ SQLITE_PRIVATE void sqlite3DropTrigger(Parse *pParse, SrcList *pName, int noErr) assert( pName->nSrc==1 ); zDb = pName->a[0].zDatabase; zName = pName->a[0].zName; - nName = sqlite3Strlen30(zName); assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) ); for(i=OMIT_TEMPDB; inDb; i++){ int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - if( zDb && sqlite3StrICmp(db->aDb[j].zName, zDb) ) continue; + if( zDb && sqlite3StrICmp(db->aDb[j].zDbSName, zDb) ) continue; assert( sqlite3SchemaMutexHeld(db, j, 0) ); - pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName, nName); + pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName); if( pTrigger ) break; } if( !pTrigger ){ @@ -105566,8 +122271,7 @@ drop_trigger_cleanup: ** is set on. */ static Table *tableOfTrigger(Trigger *pTrigger){ - int n = sqlite3Strlen30(pTrigger->table); - return sqlite3HashFind(&pTrigger->pTabSchema->tblHash, pTrigger->table, n); + return sqlite3HashFind(&pTrigger->pTabSchema->tblHash, pTrigger->table); } @@ -105588,7 +122292,7 @@ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){ #ifndef SQLITE_OMIT_AUTHORIZATION { int code = SQLITE_DROP_TRIGGER; - const char *zDb = db->aDb[iDb].zName; + const char *zDb = db->aDb[iDb].zDbSName; const char *zTab = SCHEMA_TABLE(iDb); if( iDb==1 ) code = SQLITE_DROP_TEMP_TRIGGER; if( sqlite3AuthCheck(pParse, code, pTrigger->zName, pTable->zName, zDb) || @@ -105602,30 +122306,12 @@ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){ */ assert( pTable!=0 ); if( (v = sqlite3GetVdbe(pParse))!=0 ){ - int base; - static const VdbeOpList dropTrigger[] = { - { OP_Rewind, 0, ADDR(9), 0}, - { OP_String8, 0, 1, 0}, /* 1 */ - { OP_Column, 0, 1, 2}, - { OP_Ne, 2, ADDR(8), 1}, - { OP_String8, 0, 1, 0}, /* 4: "trigger" */ - { OP_Column, 0, 0, 2}, - { OP_Ne, 2, ADDR(8), 1}, - { OP_Delete, 0, 0, 0}, - { OP_Next, 0, ADDR(1), 0}, /* 8 */ - }; - - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3OpenMasterTable(pParse, iDb); - base = sqlite3VdbeAddOpList(v, ArraySize(dropTrigger), dropTrigger); - sqlite3VdbeChangeP4(v, base+1, pTrigger->zName, P4_TRANSIENT); - sqlite3VdbeChangeP4(v, base+4, "trigger", P4_STATIC); + sqlite3NestedParse(pParse, + "DELETE FROM %Q.%s WHERE name=%Q AND type='trigger'", + db->aDb[iDb].zDbSName, MASTER_NAME, pTrigger->zName + ); sqlite3ChangeCookie(pParse, iDb); - sqlite3VdbeAddOp2(v, OP_Close, 0, 0); sqlite3VdbeAddOp4(v, OP_DropTrigger, iDb, 0, 0, pTrigger->zName, 0); - if( pParse->nMem<3 ){ - pParse->nMem = 3; - } } } @@ -105638,7 +122324,7 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const ch assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); pHash = &(db->aDb[iDb].pSchema->trigHash); - pTrigger = sqlite3HashInsert(pHash, zName, sqlite3Strlen30(zName), 0); + pTrigger = sqlite3HashInsert(pHash, zName, 0); if( ALWAYS(pTrigger) ){ if( pTrigger->pSchema==pTrigger->pTabSchema ){ Table *pTab = tableOfTrigger(pTrigger); @@ -105702,7 +122388,7 @@ SQLITE_PRIVATE Trigger *sqlite3TriggersExist( } /* -** Convert the pStep->target token into a SrcList and return a pointer +** Convert the pStep->zTarget string into a SrcList and return a pointer ** to that SrcList. ** ** This routine adds a specific database name, if needed, to the target when @@ -105715,18 +122401,20 @@ static SrcList *targetSrcList( Parse *pParse, /* The parsing context */ TriggerStep *pStep /* The trigger containing the target token */ ){ + sqlite3 *db = pParse->db; int iDb; /* Index of the database to use */ SrcList *pSrc; /* SrcList to be returned */ - pSrc = sqlite3SrcListAppend(pParse->db, 0, &pStep->target, 0); + pSrc = sqlite3SrcListAppend(db, 0, 0, 0); if( pSrc ){ assert( pSrc->nSrc>0 ); - assert( pSrc->a!=0 ); - iDb = sqlite3SchemaToIndex(pParse->db, pStep->pTrig->pSchema); + pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget); + iDb = sqlite3SchemaToIndex(db, pStep->pTrig->pSchema); if( iDb==0 || iDb>=2 ){ - sqlite3 *db = pParse->db; - assert( iDbdb->nDb ); - pSrc->a[pSrc->nSrc-1].zDatabase = sqlite3DbStrDup(db, db->aDb[iDb].zName); + const char *zDb; + assert( iDbnDb ); + zDb = db->aDb[iDb].zDbSName; + pSrc->a[pSrc->nSrc-1].zDatabase = sqlite3DbStrDup(db, zDb); } } return pSrc; @@ -105763,15 +122451,7 @@ static int codeTriggerProgram( ** INSERT OR IGNORE INTO t1 ... ; -- insert into t2 uses IGNORE policy */ pParse->eOrconf = (orconf==OE_Default)?pStep->orconf:(u8)orconf; - - /* Clear the cookieGoto flag. When coding triggers, the cookieGoto - ** variable is used as a flag to indicate to sqlite3ExprCodeConstants() - ** that it is not safe to refactor constants (this happens after the - ** start of the first loop in the SQL statement is coded - at that - ** point code may be conditionally executed, so it is no longer safe to - ** initialize constant register values). */ - assert( pParse->cookieGoto==0 || pParse->cookieGoto==-1 ); - pParse->cookieGoto = 0; + assert( pParse->okConstFactor==0 ); switch( pStep->op ){ case TK_UPDATE: { @@ -105845,6 +122525,7 @@ static void transferParseError(Parse *pTo, Parse *pFrom){ if( pTo->nErr==0 ){ pTo->zErrMsg = pFrom->zErrMsg; pTo->nErr = pFrom->nErr; + pTo->rc = pFrom->rc; }else{ sqlite3DbFree(pFrom->db, pFrom->zErrMsg); } @@ -105947,7 +122628,6 @@ static TriggerPrg *codeRowTrigger( } pProgram->nMem = pSubParse->nMem; pProgram->nCsr = pSubParse->nTab; - pProgram->nOnce = pSubParse->nOnce; pProgram->token = (void *)pTrigger; pPrg->aColmask[0] = pSubParse->oldmask; pPrg->aColmask[1] = pSubParse->newmask; @@ -106020,8 +122700,8 @@ SQLITE_PRIVATE void sqlite3CodeRowTriggerDirect( if( pPrg ){ int bRecursive = (p->zName && 0==(pParse->db->flags&SQLITE_RecTriggers)); - sqlite3VdbeAddOp3(v, OP_Program, reg, ignoreJump, ++pParse->nMem); - sqlite3VdbeChangeP4(v, -1, (const char *)pPrg->pProgram, P4_SUBPROGRAM); + sqlite3VdbeAddOp4(v, OP_Program, reg, ignoreJump, ++pParse->nMem, + (const char *)pPrg->pProgram, P4_SUBPROGRAM); VdbeComment( (v, "Call: %s.%s", (p->zName?p->zName:"fkey"), onErrorText(orconf))); @@ -106183,6 +122863,7 @@ SQLITE_PRIVATE u32 sqlite3TriggerColmask( ** This file contains C code routines that are called by the parser ** to handle UPDATE statements. */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_VIRTUALTABLE /* Forward declaration */ @@ -106239,14 +122920,14 @@ SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *v, Table *pTab, int i, int iReg){ sqlite3ValueFromExpr(sqlite3VdbeDb(v), pCol->pDflt, enc, pCol->affinity, &pValue); if( pValue ){ - sqlite3VdbeChangeP4(v, -1, (const char *)pValue, P4_MEM); + sqlite3VdbeAppendP4(v, pValue, P4_MEM); } -#ifndef SQLITE_OMIT_FLOATING_POINT - if( pTab->aCol[i].affinity==SQLITE_AFF_REAL ){ - sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg); - } -#endif } +#ifndef SQLITE_OMIT_FLOATING_POINT + if( pTab->aCol[i].affinity==SQLITE_AFF_REAL ){ + sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg); + } +#endif } /* @@ -106275,7 +122956,7 @@ SQLITE_PRIVATE void sqlite3Update( int iDataCur; /* Cursor for the canonical data btree */ int iIdxCur; /* Cursor for the first index */ sqlite3 *db; /* The database structure */ - int *aRegIdx = 0; /* One register assigned to each index to be updated */ + int *aRegIdx = 0; /* First register in array assigned to each index */ int *aXRef = 0; /* aXRef[i] is the index in pChanges->a[] of the ** an expression for the i-th column of the table. ** aXRef[i]==-1 if the i-th column is not changed. */ @@ -106287,10 +122968,11 @@ SQLITE_PRIVATE void sqlite3Update( AuthContext sContext; /* The authorization context */ NameContext sNC; /* The name-context to resolve expressions in */ int iDb; /* Database containing the table being updated */ - int okOnePass; /* True for one-pass algorithm without the FIFO */ + int eOnePass; /* ONEPASS_XXX value from where.c */ int hasFK; /* True if foreign key processing is required */ int labelBreak; /* Jump here to break out of UPDATE loop */ int labelContinue; /* Jump here to continue next step of UPDATE loop */ + int flags; /* Flags for sqlite3WhereBegin() */ #ifndef SQLITE_OMIT_TRIGGER int isView; /* True when updating a view (INSTEAD OF trigger) */ @@ -106301,12 +122983,16 @@ SQLITE_PRIVATE void sqlite3Update( int iEph = 0; /* Ephemeral table holding all primary key values */ int nKey = 0; /* Number of elements in regKey for WITHOUT ROWID */ int aiCurOnePass[2]; /* The write cursors opened by WHERE_ONEPASS */ + int addrOpen = 0; /* Address of OP_OpenEphemeral */ + int iPk = 0; /* First of nPk cells holding PRIMARY KEY value */ + i16 nPk = 0; /* Number of components of the PRIMARY KEY */ + int bReplace = 0; /* True if REPLACE conflict resolution might happen */ /* Register Allocations */ int regRowCount = 0; /* A count of rows changed */ - int regOldRowid; /* The old rowid */ - int regNewRowid; /* The new rowid */ - int regNew; /* Content of the NEW.* table in triggers */ + int regOldRowid = 0; /* The old rowid */ + int regNewRowid = 0; /* The new rowid */ + int regNew = 0; /* Content of the NEW.* table in triggers */ int regOld = 0; /* Content of OLD.* table in triggers */ int regRowSet = 0; /* Rowset of rows to be updated */ int regKey = 0; /* composite PRIMARY KEY value */ @@ -106357,7 +123043,7 @@ SQLITE_PRIVATE void sqlite3Update( iIdxCur = iDataCur+1; pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab); for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){ - if( pIdx->autoIndex==2 && pPk!=0 ){ + if( IsPrimaryKeyIndex(pIdx) && pPk!=0 ){ iDataCur = pParse->nTab; pTabList->a[0].iCursor = iDataCur; } @@ -106367,7 +123053,7 @@ SQLITE_PRIVATE void sqlite3Update( /* Allocate space for aXRef[], aRegIdx[], and aToOpen[]. ** Initialize aXRef[] and aToOpen[] to their default values. */ - aXRef = sqlite3DbMallocRaw(db, sizeof(int) * (pTab->nCol+nIdx) + nIdx+2 ); + aXRef = sqlite3DbMallocRawNN(db, sizeof(int) * (pTab->nCol+nIdx) + nIdx+2 ); if( aXRef==0 ) goto update_cleanup; aRegIdx = aXRef+pTab->nCol; aToOpen = (u8*)(aRegIdx+nIdx); @@ -106419,7 +123105,7 @@ SQLITE_PRIVATE void sqlite3Update( int rc; rc = sqlite3AuthCheck(pParse, SQLITE_UPDATE, pTab->zName, j<0 ? "ROWID" : pTab->aCol[j].zName, - db->aDb[iDb].zName); + db->aDb[iDb].zDbSName); if( rc==SQLITE_DENY ){ goto update_cleanup; }else if( rc==SQLITE_IGNORE ){ @@ -106433,26 +123119,38 @@ SQLITE_PRIVATE void sqlite3Update( assert( chngPk==0 || chngPk==1 ); chngKey = chngRowid + chngPk; - /* The SET expressions are not actually used inside the WHERE loop. - ** So reset the colUsed mask + /* The SET expressions are not actually used inside the WHERE loop. + ** So reset the colUsed mask. Unless this is a virtual table. In that + ** case, set all bits of the colUsed mask (to ensure that the virtual + ** table implementation makes all columns available). */ - pTabList->a[0].colUsed = 0; + pTabList->a[0].colUsed = IsVirtual(pTab) ? ALLBITS : 0; hasFK = sqlite3FkRequired(pParse, pTab, aXRef, chngKey); /* There is one entry in the aRegIdx[] array for each index on the table ** being updated. Fill in aRegIdx[] with a register number that will hold - ** the key for accessing each index. + ** the key for accessing each index. + ** + ** FIXME: Be smarter about omitting indexes that use expressions. */ for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ int reg; if( chngKey || hasFK || pIdx->pPartIdxWhere || pIdx==pPk ){ reg = ++pParse->nMem; + pParse->nMem += pIdx->nColumn; }else{ reg = 0; for(i=0; inKeyCol; i++){ - if( aXRef[pIdx->aiColumn[i]]>=0 ){ + i16 iIdxCol = pIdx->aiColumn[i]; + if( iIdxCol<0 || aXRef[iIdxCol]>=0 ){ reg = ++pParse->nMem; + pParse->nMem += pIdx->nColumn; + if( (onError==OE_Replace) + || (onError==OE_Default && pIdx->onError==OE_Replace) + ){ + bReplace = 1; + } break; } } @@ -106460,6 +123158,11 @@ SQLITE_PRIVATE void sqlite3Update( if( reg==0 ) aToOpen[j+1] = 0; aRegIdx[j] = reg; } + if( bReplace ){ + /* If REPLACE conflict resolution might be invoked, open cursors on all + ** indexes in case they are needed to delete records. */ + memset(aToOpen, 1, nIdx+1); + } /* Begin generating code. */ v = sqlite3GetVdbe(pParse); @@ -106467,29 +123170,20 @@ SQLITE_PRIVATE void sqlite3Update( if( pParse->nested==0 ) sqlite3VdbeCountChanges(v); sqlite3BeginWriteOperation(pParse, 1, iDb); -#ifndef SQLITE_OMIT_VIRTUALTABLE - /* Virtual tables must be handled separately */ - if( IsVirtual(pTab) ){ - updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef, - pWhere, onError); - pWhere = 0; - pTabList = 0; - goto update_cleanup; - } -#endif - /* Allocate required registers. */ - regRowSet = ++pParse->nMem; - regOldRowid = regNewRowid = ++pParse->nMem; - if( chngPk || pTrigger || hasFK ){ - regOld = pParse->nMem + 1; + if( !IsVirtual(pTab) ){ + regRowSet = ++pParse->nMem; + regOldRowid = regNewRowid = ++pParse->nMem; + if( chngPk || pTrigger || hasFK ){ + regOld = pParse->nMem + 1; + pParse->nMem += pTab->nCol; + } + if( chngKey || pTrigger || hasFK ){ + regNewRowid = ++pParse->nMem; + } + regNew = pParse->nMem + 1; pParse->nMem += pTab->nCol; } - if( chngKey || pTrigger || hasFK ){ - regNewRowid = ++pParse->nMem; - } - regNew = pParse->nMem + 1; - pParse->nMem += pTab->nCol; /* Start the view context. */ if( isView ){ @@ -106497,7 +123191,7 @@ SQLITE_PRIVATE void sqlite3Update( } /* If we are trying to update a view, realize that view into - ** a ephemeral table. + ** an ephemeral table. */ #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) if( isView ){ @@ -106512,110 +123206,147 @@ SQLITE_PRIVATE void sqlite3Update( goto update_cleanup; } - /* Begin the database scan - */ +#ifndef SQLITE_OMIT_VIRTUALTABLE + /* Virtual tables must be handled separately */ + if( IsVirtual(pTab) ){ + updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef, + pWhere, onError); + goto update_cleanup; + } +#endif + + /* Initialize the count of updated rows */ + if( (db->flags & SQLITE_CountRows) && !pParse->pTriggerTab ){ + regRowCount = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount); + } + if( HasRowid(pTab) ){ sqlite3VdbeAddOp3(v, OP_Null, 0, regRowSet, regOldRowid); - pWInfo = sqlite3WhereBegin( - pParse, pTabList, pWhere, 0, 0, WHERE_ONEPASS_DESIRED, iIdxCur - ); - if( pWInfo==0 ) goto update_cleanup; - okOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); - - /* Remember the rowid of every item to be updated. - */ - sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid); - if( !okOnePass ){ - sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid); - } - - /* End the database scan loop. - */ - sqlite3WhereEnd(pWInfo); }else{ - int iPk; /* First of nPk memory cells holding PRIMARY KEY value */ - i16 nPk; /* Number of components of the PRIMARY KEY */ - int addrOpen; /* Address of the OpenEphemeral instruction */ - assert( pPk!=0 ); nPk = pPk->nKeyCol; iPk = pParse->nMem+1; pParse->nMem += nPk; regKey = ++pParse->nMem; iEph = pParse->nTab++; + sqlite3VdbeAddOp2(v, OP_Null, 0, iPk); addrOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEph, nPk); sqlite3VdbeSetP4KeyInfo(pParse, pPk); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, - WHERE_ONEPASS_DESIRED, iIdxCur); - if( pWInfo==0 ) goto update_cleanup; - okOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); - for(i=0; iaiColumn[i], - iPk+i); + } + + /* Begin the database scan. + ** + ** Do not consider a single-pass strategy for a multi-row update if + ** there are any triggers or foreign keys to process, or rows may + ** be deleted as a result of REPLACE conflict handling. Any of these + ** things might disturb a cursor being used to scan through the table + ** or index, causing a single-pass approach to malfunction. */ + flags = WHERE_ONEPASS_DESIRED|WHERE_SEEK_UNIQ_TABLE; + if( !pParse->nested && !pTrigger && !hasFK && !chngKey && !bReplace ){ + flags |= WHERE_ONEPASS_MULTIROW; + } + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, flags, iIdxCur); + if( pWInfo==0 ) goto update_cleanup; + + /* A one-pass strategy that might update more than one row may not + ** be used if any column of the index used for the scan is being + ** updated. Otherwise, if there is an index on "b", statements like + ** the following could create an infinite loop: + ** + ** UPDATE t1 SET b=b+1 WHERE b>? + ** + ** Fall back to ONEPASS_OFF if where.c has selected a ONEPASS_MULTI + ** strategy that uses an index for which one or more columns are being + ** updated. */ + eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + if( eOnePass==ONEPASS_MULTI ){ + int iCur = aiCurOnePass[1]; + if( iCur>=0 && iCur!=iDataCur && aToOpen[iCur-iBaseCur] ){ + eOnePass = ONEPASS_OFF; } - if( okOnePass ){ + assert( iCur!=iDataCur || !HasRowid(pTab) ); + } + + if( HasRowid(pTab) ){ + /* Read the rowid of the current row of the WHERE scan. In ONEPASS_OFF + ** mode, write the rowid into the FIFO. In either of the one-pass modes, + ** leave it in register regOldRowid. */ + sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid); + if( eOnePass==ONEPASS_OFF ){ + sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid); + } + }else{ + /* Read the PK of the current row into an array of registers. In + ** ONEPASS_OFF mode, serialize the array into a record and store it in + ** the ephemeral table. Or, in ONEPASS_SINGLE or MULTI mode, change + ** the OP_OpenEphemeral instruction to a Noop (the ephemeral table + ** is not required) and leave the PK fields in the array of registers. */ + for(i=0; iaiColumn[i]>=0 ); + sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur,pPk->aiColumn[i],iPk+i); + } + if( eOnePass ){ sqlite3VdbeChangeToNoop(v, addrOpen); nKey = nPk; regKey = iPk; }else{ sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey, - sqlite3IndexAffinityStr(v, pPk), P4_TRANSIENT); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iEph, regKey); + sqlite3IndexAffinityStr(db, pPk), nPk); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEph, regKey, iPk, nPk); } - sqlite3WhereEnd(pWInfo); } - /* Initialize the count of updated rows - */ - if( (db->flags & SQLITE_CountRows) && !pParse->pTriggerTab ){ - regRowCount = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount); + if( eOnePass!=ONEPASS_MULTI ){ + sqlite3WhereEnd(pWInfo); } labelBreak = sqlite3VdbeMakeLabel(v); if( !isView ){ - /* - ** Open every index that needs updating. Note that if any - ** index could potentially invoke a REPLACE conflict resolution - ** action, then we need to open all indices because we might need - ** to be deleting some records. - */ - if( onError==OE_Replace ){ - memset(aToOpen, 1, nIdx+1); - }else{ - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->onError==OE_Replace ){ - memset(aToOpen, 1, nIdx+1); - break; - } - } - } - if( okOnePass ){ + int addrOnce = 0; + + /* Open every index that needs updating. */ + if( eOnePass!=ONEPASS_OFF ){ if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iBaseCur] = 0; if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iBaseCur] = 0; } - sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, iBaseCur, aToOpen, + + if( eOnePass==ONEPASS_MULTI && (nIdx-(aiCurOnePass[1]>=0))>0 ){ + addrOnce = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); + } + sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, iBaseCur, aToOpen, 0, 0); + if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce); } /* Top of the update loop */ - if( okOnePass ){ - if( aToOpen[iDataCur-iBaseCur] ){ - assert( pPk!=0 ); + if( eOnePass!=ONEPASS_OFF ){ + if( !isView && aiCurOnePass[0]!=iDataCur && aiCurOnePass[1]!=iDataCur ){ + assert( pPk ); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelBreak, regKey, nKey); + VdbeCoverageNeverTaken(v); + } + if( eOnePass==ONEPASS_SINGLE ){ + labelContinue = labelBreak; + }else{ + labelContinue = sqlite3VdbeMakeLabel(v); } - labelContinue = labelBreak; sqlite3VdbeAddOp2(v, OP_IsNull, pPk ? regKey : regOldRowid, labelBreak); + VdbeCoverageIf(v, pPk==0); + VdbeCoverageIf(v, pPk!=0); }else if( pPk ){ labelContinue = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_Rewind, iEph, labelBreak); - addrTop = sqlite3VdbeAddOp2(v, OP_RowKey, iEph, regKey); + sqlite3VdbeAddOp2(v, OP_Rewind, iEph, labelBreak); VdbeCoverage(v); + addrTop = sqlite3VdbeAddOp2(v, OP_RowData, iEph, regKey); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue, regKey, 0); + VdbeCoverage(v); }else{ labelContinue = sqlite3VdbeAddOp3(v, OP_RowSetRead, regRowSet, labelBreak, regOldRowid); + VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue, regOldRowid); + VdbeCoverage(v); } /* If the record number will change, set register regNewRowid to @@ -106625,7 +123356,7 @@ SQLITE_PRIVATE void sqlite3Update( assert( chngKey || pTrigger || hasFK || regOldRowid==regNewRowid ); if( chngRowid ){ sqlite3ExprCode(pParse, pRowidExpr, regNewRowid); - sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); + sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); VdbeCoverage(v); } /* Compute the old pre-UPDATE content of the row being changed, if that @@ -106652,7 +123383,7 @@ SQLITE_PRIVATE void sqlite3Update( } /* Populate the array of registers beginning at regNew with the new - ** row data. This array is used to check constaints, create the new + ** row data. This array is used to check constants, create the new ** table and index records, and as the values for any new.* references ** made by triggers. ** @@ -106667,7 +123398,6 @@ SQLITE_PRIVATE void sqlite3Update( newmask = sqlite3TriggerColmask( pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError ); - /*sqlite3VdbeAddOp3(v, OP_Null, 0, regNew, regNew+pTab->nCol-1);*/ for(i=0; inCol; i++){ if( i==pTab->iPKey ){ sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i); @@ -106683,7 +123413,7 @@ SQLITE_PRIVATE void sqlite3Update( */ testcase( i==31 ); testcase( i==32 ); - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regNew+i); + sqlite3ExprCodeGetColumnToReg(pParse, pTab, i, iDataCur, regNew+i); }else{ sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i); } @@ -106694,8 +123424,7 @@ SQLITE_PRIVATE void sqlite3Update( ** verified. One could argue that this is wrong. */ if( tmask&TRIGGER_BEFORE ){ - sqlite3VdbeAddOp2(v, OP_Affinity, regNew, pTab->nCol); - sqlite3TableAffinityStr(v, pTab); + sqlite3TableAffinity(v, pTab, regNew); sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges, TRIGGER_BEFORE, pTab, regOldRowid, onError, labelContinue); @@ -106707,8 +123436,10 @@ SQLITE_PRIVATE void sqlite3Update( */ if( pPk ){ sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue,regKey,nKey); + VdbeCoverage(v); }else{ sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue, regOldRowid); + VdbeCoverage(v); } /* If it did not delete it, the row-trigger may still have modified @@ -106724,13 +123455,13 @@ SQLITE_PRIVATE void sqlite3Update( } if( !isView ){ - int j1 = 0; /* Address of jump instruction */ - int bReplace = 0; /* True if REPLACE conflict resolution might happen */ + int addr1 = 0; /* Address of jump instruction */ /* Do constraint checks. */ assert( regOldRowid>0 ); sqlite3GenerateConstraintChecks(pParse, pTab, aRegIdx, iDataCur, iIdxCur, - regNewRowid, regOldRowid, chngKey, onError, labelContinue, &bReplace); + regNewRowid, regOldRowid, chngKey, onError, labelContinue, &bReplace, + aXRef); /* Do FK constraint checks. */ if( hasFK ){ @@ -106740,19 +123471,43 @@ SQLITE_PRIVATE void sqlite3Update( /* Delete the index entries associated with the current record. */ if( bReplace || chngKey ){ if( pPk ){ - j1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey); + addr1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey); }else{ - j1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid); + addr1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid); } + VdbeCoverageNeverTaken(v); } - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx); - - /* If changing the record number, delete the old record. */ - if( hasFK || chngKey || pPk!=0 ){ + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx, -1); + + /* If changing the rowid value, or if there are foreign key constraints + ** to process, delete the old record. Otherwise, add a noop OP_Delete + ** to invoke the pre-update hook. + ** + ** That (regNew==regnewRowid+1) is true is also important for the + ** pre-update hook. If the caller invokes preupdate_new(), the returned + ** value is copied from memory cell (regNewRowid+1+iCol), where iCol + ** is the column index supplied by the user. + */ + assert( regNew==regNewRowid+1 ); +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK + sqlite3VdbeAddOp3(v, OP_Delete, iDataCur, + OPFLAG_ISUPDATE | ((hasFK || chngKey) ? 0 : OPFLAG_ISNOOP), + regNewRowid + ); + if( eOnePass==ONEPASS_MULTI ){ + assert( hasFK==0 && chngKey==0 ); + sqlite3VdbeChangeP5(v, OPFLAG_SAVEPOSITION); + } + if( !pParse->nested ){ + sqlite3VdbeAppendP4(v, pTab, P4_TABLE); + } +#else + if( hasFK || chngKey ){ sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, 0); } +#endif if( bReplace || chngKey ){ - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); } if( hasFK ){ @@ -106760,8 +123515,11 @@ SQLITE_PRIVATE void sqlite3Update( } /* Insert the new index entries and the new record. */ - sqlite3CompleteInsertion(pParse, pTab, iDataCur, iIdxCur, - regNewRowid, aRegIdx, 1, 0, 0); + sqlite3CompleteInsertion( + pParse, pTab, iDataCur, iIdxCur, regNewRowid, aRegIdx, + OPFLAG_ISUPDATE | (eOnePass==ONEPASS_MULTI ? OPFLAG_SAVEPOSITION : 0), + 0, 0 + ); /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to ** handle rows (possibly in other tables) that refer via a foreign key @@ -106783,25 +123541,19 @@ SQLITE_PRIVATE void sqlite3Update( /* Repeat the above with the next record to be updated, until ** all record selected by the WHERE clause have been updated. */ - if( okOnePass ){ + if( eOnePass==ONEPASS_SINGLE ){ /* Nothing to do at end-of-loop for a single-pass */ + }else if( eOnePass==ONEPASS_MULTI ){ + sqlite3VdbeResolveLabel(v, labelContinue); + sqlite3WhereEnd(pWInfo); }else if( pPk ){ sqlite3VdbeResolveLabel(v, labelContinue); - sqlite3VdbeAddOp2(v, OP_Next, iEph, addrTop); + sqlite3VdbeAddOp2(v, OP_Next, iEph, addrTop); VdbeCoverage(v); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelContinue); + sqlite3VdbeGoto(v, labelContinue); } sqlite3VdbeResolveLabel(v, labelBreak); - /* Close all tables */ - for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ - assert( aRegIdx ); - if( aToOpen[i+1] ){ - sqlite3VdbeAddOp2(v, OP_Close, iIdxCur+i, 0); - } - } - if( iDataCurpVdbe; /* Virtual machine under construction */ - ExprList *pEList = 0; /* The result set of the SELECT statement */ - Select *pSelect = 0; /* The SELECT statement */ - Expr *pExpr; /* Temporary expression */ int ephemTab; /* Table holding the result of the SELECT */ int i; /* Loop counter */ - int addr; /* Address of top of loop */ - int iReg; /* First register in set passed to OP_VUpdate */ sqlite3 *db = pParse->db; /* Database connection */ const char *pVTab = (const char*)sqlite3GetVTable(db, pTab); - SelectDest dest; + WhereInfo *pWInfo; + int nArg = 2 + pTab->nCol; /* Number of arguments to VUpdate */ + int regArg; /* First register in VUpdate arg array */ + int regRec; /* Register in which to assemble record */ + int regRowid; /* Register for ephem table rowid */ + int iCsr = pSrc->a[0].iCursor; /* Cursor used for virtual table scan */ + int aDummy[2]; /* Unused arg for sqlite3WhereOkOnePass() */ + int bOnePass; /* True to use onepass strategy */ + int addr; /* Address of OP_OpenEphemeral */ - /* Construct the SELECT statement that will find the new values for - ** all updated rows. - */ - pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ID, "_rowid_")); - if( pRowid ){ - pEList = sqlite3ExprListAppend(pParse, pEList, - sqlite3ExprDup(db, pRowid, 0)); - } - assert( pTab->iPKey<0 ); - for(i=0; inCol; i++){ - if( aXRef[i]>=0 ){ - pExpr = sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0); - }else{ - pExpr = sqlite3Expr(db, TK_ID, pTab->aCol[i].zName); - } - pEList = sqlite3ExprListAppend(pParse, pEList, pExpr); - } - pSelect = sqlite3SelectNew(pParse, pEList, pSrc, pWhere, 0, 0, 0, 0, 0, 0); - - /* Create the ephemeral table into which the update results will - ** be stored. - */ + /* Allocate nArg registers to martial the arguments to VUpdate. Then + ** create and open the ephemeral table in which the records created from + ** these arguments will be temporarily stored. */ assert( v ); ephemTab = pParse->nTab++; - sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, pTab->nCol+1+(pRowid!=0)); - sqlite3VdbeChangeP5(v, BTREE_UNORDERED); + addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg); + regArg = pParse->nMem + 1; + pParse->nMem += nArg; + regRec = ++pParse->nMem; + regRowid = ++pParse->nMem; - /* fill the ephemeral table - */ - sqlite3SelectDestInit(&dest, SRT_Table, ephemTab); - sqlite3Select(pParse, pSelect, &dest); + /* Start scanning the virtual table */ + pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0,0,WHERE_ONEPASS_DESIRED,0); + if( pWInfo==0 ) return; - /* Generate code to scan the ephemeral table and call VUpdate. */ - iReg = ++pParse->nMem; - pParse->nMem += pTab->nCol+1; - addr = sqlite3VdbeAddOp2(v, OP_Rewind, ephemTab, 0); - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, 0, iReg); - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, (pRowid?1:0), iReg+1); + /* Populate the argument registers. */ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg); + if( pRowid ){ + sqlite3ExprCode(pParse, pRowid, regArg+1); + }else{ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1); + } for(i=0; inCol; i++){ - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, i+1+(pRowid!=0), iReg+2+i); + if( aXRef[i]>=0 ){ + sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i); + }else{ + sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i); + } + } + + bOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy); + + if( bOnePass ){ + /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded + ** above. Also, if this is a top-level parse (not a trigger), clear the + ** multi-write flag so that the VM does not open a statement journal */ + sqlite3VdbeChangeToNoop(v, addr); + if( sqlite3IsToplevel(pParse) ){ + pParse->isMultiWrite = 0; + } + }else{ + /* Create a record from the argument register contents and insert it into + ** the ephemeral table. */ + sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec); + sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid); + sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid); + } + + + if( bOnePass==0 ){ + /* End the virtual table scan */ + sqlite3WhereEnd(pWInfo); + + /* Begin scannning through the ephemeral table. */ + addr = sqlite3VdbeAddOp1(v, OP_Rewind, ephemTab); VdbeCoverage(v); + + /* Extract arguments from the current row of the ephemeral table and + ** invoke the VUpdate method. */ + for(i=0; inCol+2, iReg, pVTab, P4_VTAB); + sqlite3VdbeAddOp4(v, OP_VUpdate, 0, nArg, regArg, pVTab, P4_VTAB); sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError); sqlite3MayAbort(pParse); - sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1); - sqlite3VdbeJumpHere(v, addr); - sqlite3VdbeAddOp2(v, OP_Close, ephemTab, 0); - /* Cleanup */ - sqlite3SelectDelete(db, pSelect); + /* End of the ephemeral table scan. Or, if using the onepass strategy, + ** jump to here if the scan visited zero rows. */ + if( bOnePass==0 ){ + sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addr); + sqlite3VdbeAddOp2(v, OP_Close, ephemTab, 0); + }else{ + sqlite3WhereEnd(pWInfo); + } } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -106953,59 +123735,56 @@ static void updateVirtualTable( ** Most of the code in this file may be omitted by defining the ** SQLITE_OMIT_VACUUM macro. */ +/* #include "sqliteInt.h" */ +/* #include "vdbeInt.h" */ #if !defined(SQLITE_OMIT_VACUUM) && !defined(SQLITE_OMIT_ATTACH) -/* -** Finalize a prepared statement. If there was an error, store the -** text of the error message in *pzErrMsg. Return the result code. -*/ -static int vacuumFinalize(sqlite3 *db, sqlite3_stmt *pStmt, char **pzErrMsg){ - int rc; - rc = sqlite3VdbeFinalize((Vdbe*)pStmt); - if( rc ){ - sqlite3SetString(pzErrMsg, db, sqlite3_errmsg(db)); - } - return rc; -} /* -** Execute zSql on database db. Return an error code. +** Execute zSql on database db. +** +** If zSql returns rows, then each row will have exactly one +** column. (This will only happen if zSql begins with "SELECT".) +** Take each row of result and call execSql() again recursively. +** +** The execSqlF() routine does the same thing, except it accepts +** a format string as its third argument */ static int execSql(sqlite3 *db, char **pzErrMsg, const char *zSql){ - sqlite3_stmt *pStmt; - VVA_ONLY( int rc; ) - if( !zSql ){ - return SQLITE_NOMEM; - } - if( SQLITE_OK!=sqlite3_prepare(db, zSql, -1, &pStmt, 0) ){ - sqlite3SetString(pzErrMsg, db, sqlite3_errmsg(db)); - return sqlite3_errcode(db); - } - VVA_ONLY( rc = ) sqlite3_step(pStmt); - assert( rc!=SQLITE_ROW || (db->flags&SQLITE_CountRows) ); - return vacuumFinalize(db, pStmt, pzErrMsg); -} - -/* -** Execute zSql on database db. The statement returns exactly -** one column. Execute this as SQL on the same database. -*/ -static int execExecSql(sqlite3 *db, char **pzErrMsg, const char *zSql){ sqlite3_stmt *pStmt; int rc; - rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); + /* printf("SQL: [%s]\n", zSql); fflush(stdout); */ + rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); if( rc!=SQLITE_OK ) return rc; - - while( SQLITE_ROW==sqlite3_step(pStmt) ){ - rc = execSql(db, pzErrMsg, (char*)sqlite3_column_text(pStmt, 0)); - if( rc!=SQLITE_OK ){ - vacuumFinalize(db, pStmt, pzErrMsg); - return rc; + while( SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){ + const char *zSubSql = (const char*)sqlite3_column_text(pStmt,0); + assert( sqlite3_strnicmp(zSql,"SELECT",6)==0 ); + if( zSubSql ){ + assert( zSubSql[0]!='S' ); + rc = execSql(db, pzErrMsg, zSubSql); + if( rc!=SQLITE_OK ) break; } } - - return vacuumFinalize(db, pStmt, pzErrMsg); + assert( rc!=SQLITE_ROW ); + if( rc==SQLITE_DONE ) rc = SQLITE_OK; + if( rc ){ + sqlite3SetString(pzErrMsg, db, sqlite3_errmsg(db)); + } + (void)sqlite3_finalize(pStmt); + return rc; +} +static int execSqlF(sqlite3 *db, char **pzErrMsg, const char *zSql, ...){ + char *z; + va_list ap; + int rc; + va_start(ap, zSql); + z = sqlite3VMPrintf(db, zSql, ap); + va_end(ap); + if( z==0 ) return SQLITE_NOMEM; + rc = execSql(db, pzErrMsg, z); + sqlite3DbFree(db, z); + return rc; } /* @@ -107024,25 +123803,26 @@ static int execExecSql(sqlite3 *db, char **pzErrMsg, const char *zSql){ ** step (3) requires additional temporary disk space approximately equal ** to the size of the original database for the rollback journal. ** Hence, temporary disk space that is approximately 2x the size of the -** orginal database is required. Every page of the database is written +** original database is required. Every page of the database is written ** approximately 3 times: Once for step (2) and twice for step (3). ** Two writes per page are required in step (3) because the original ** database content must be written into the rollback journal prior to ** overwriting the database with the vacuumed content. ** ** Only 1x temporary space and only 1x writes would be required if -** the copy of step (3) were replace by deleting the original database +** the copy of step (3) were replaced by deleting the original database ** and renaming the transient database as the original. But that will ** not work if other processes are attached to the original database. ** And a power loss in between deleting the original and renaming the ** transient would cause the database file to appear to be deleted ** following reboot. */ -SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse){ +SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse, Token *pNm){ Vdbe *v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3VdbeAddOp2(v, OP_Vacuum, 0, 0); - sqlite3VdbeUsesBtree(v, 0); + int iDb = pNm ? sqlite3TwoPartName(pParse, pNm, pNm, &pNm) : 0; + if( v && (iDb>=2 || iDb==0) ){ + sqlite3VdbeAddOp1(v, OP_Vacuum, iDb); + sqlite3VdbeUsesBtree(v, iDb); } return; } @@ -107050,19 +123830,19 @@ SQLITE_PRIVATE void sqlite3Vacuum(Parse *pParse){ /* ** This routine implements the OP_Vacuum opcode of the VDBE. */ -SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ +SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db, int iDb){ int rc = SQLITE_OK; /* Return code from service routines */ Btree *pMain; /* The database being vacuumed */ Btree *pTemp; /* The temporary database we vacuum into */ - char *zSql = 0; /* SQL statements */ int saved_flags; /* Saved value of the db->flags */ int saved_nChange; /* Saved value of db->nChange */ int saved_nTotalChange; /* Saved value of db->nTotalChange */ - void (*saved_xTrace)(void*,const char*); /* Saved db->xTrace */ + u8 saved_mTrace; /* Saved trace settings */ Db *pDb = 0; /* Database to detach at end of vacuum */ int isMemDb; /* True if vacuuming a :memory: database */ int nRes; /* Bytes of reserved space at the end of each page */ int nDb; /* Number of attached databases */ + const char *zDbMain; /* Schema name of database to vacuum */ if( !db->autoCommit ){ sqlite3SetString(pzErrMsg, db, "cannot VACUUM from within a transaction"); @@ -107079,12 +123859,14 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ saved_flags = db->flags; saved_nChange = db->nChange; saved_nTotalChange = db->nTotalChange; - saved_xTrace = db->xTrace; - db->flags |= SQLITE_WriteSchema | SQLITE_IgnoreChecks | SQLITE_PreferBuiltin; - db->flags &= ~(SQLITE_ForeignKeys | SQLITE_ReverseOrder); - db->xTrace = 0; + saved_mTrace = db->mTrace; + db->flags |= (SQLITE_WriteSchema | SQLITE_IgnoreChecks + | SQLITE_PreferBuiltin | SQLITE_Vacuum); + db->flags &= ~(SQLITE_ForeignKeys | SQLITE_ReverseOrder | SQLITE_CountRows); + db->mTrace = 0; - pMain = db->aDb[0].pBt; + zDbMain = db->aDb[iDb].zDbSName; + pMain = db->aDb[iDb].pBt; isMemDb = sqlite3PagerIsMemdb(sqlite3BtreePager(pMain)); /* Attach the temporary database as 'vacuum_db'. The synchronous pragma @@ -107102,18 +123884,12 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ ** to write the journal header file. */ nDb = db->nDb; - if( sqlite3TempInMemory(db) ){ - zSql = "ATTACH ':memory:' AS vacuum_db;"; - }else{ - zSql = "ATTACH '' AS vacuum_db;"; - } - rc = execSql(db, pzErrMsg, zSql); - if( db->nDb>nDb ){ - pDb = &db->aDb[db->nDb-1]; - assert( strcmp(pDb->zName,"vacuum_db")==0 ); - } + rc = execSql(db, pzErrMsg, "ATTACH''AS vacuum_db"); if( rc!=SQLITE_OK ) goto end_of_vacuum; - pTemp = db->aDb[db->nDb-1].pBt; + assert( (db->nDb-1)==nDb ); + pDb = &db->aDb[nDb]; + assert( strcmp(pDb->zDbSName,"vacuum_db")==0 ); + pTemp = pDb->pBt; /* The call to execSql() to attach the temp database has left the file ** locked (as there was more than one active statement when the transaction @@ -107121,7 +123897,7 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ ** cause problems for the call to BtreeSetPageSize() below. */ sqlite3BtreeCommit(pTemp); - nRes = sqlite3BtreeGetReserve(pMain); + nRes = sqlite3BtreeGetOptimalReserve(pMain); /* A VACUUM cannot change the pagesize of an encrypted database. */ #ifdef SQLITE_HAS_CODEC @@ -107134,14 +123910,15 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ } #endif - rc = execSql(db, pzErrMsg, "PRAGMA vacuum_db.synchronous=OFF"); - if( rc!=SQLITE_OK ) goto end_of_vacuum; + sqlite3BtreeSetCacheSize(pTemp, db->aDb[iDb].pSchema->cache_size); + sqlite3BtreeSetSpillSize(pTemp, sqlite3BtreeSetSpillSize(pMain,0)); + sqlite3BtreeSetPagerFlags(pTemp, PAGER_SYNCHRONOUS_OFF|PAGER_CACHESPILL); /* Begin a transaction and take an exclusive lock on the main database ** file. This is done before the sqlite3BtreeGetPageSize(pMain) call below, ** to ensure that we do not try to change the page-size on a WAL database. */ - rc = execSql(db, pzErrMsg, "BEGIN;"); + rc = execSql(db, pzErrMsg, "BEGIN"); if( rc!=SQLITE_OK ) goto end_of_vacuum; rc = sqlite3BtreeBeginTrans(pMain, 2); if( rc!=SQLITE_OK ) goto end_of_vacuum; @@ -107156,7 +123933,7 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ || (!isMemDb && sqlite3BtreeSetPageSize(pTemp, db->nextPagesize, nRes, 0)) || NEVER(db->mallocFailed) ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; goto end_of_vacuum; } @@ -107168,60 +123945,48 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ /* Query the schema of the main database. Create a mirror schema ** in the temporary database. */ - rc = execExecSql(db, pzErrMsg, - "SELECT 'CREATE TABLE vacuum_db.' || substr(sql,14) " - " FROM sqlite_master WHERE type='table' AND name!='sqlite_sequence'" - " AND coalesce(rootpage,1)>0" + db->init.iDb = nDb; /* force new CREATE statements into vacuum_db */ + rc = execSqlF(db, pzErrMsg, + "SELECT sql FROM \"%w\".sqlite_master" + " WHERE type='table'AND name<>'sqlite_sequence'" + " AND coalesce(rootpage,1)>0", + zDbMain ); if( rc!=SQLITE_OK ) goto end_of_vacuum; - rc = execExecSql(db, pzErrMsg, - "SELECT 'CREATE INDEX vacuum_db.' || substr(sql,14)" - " FROM sqlite_master WHERE sql LIKE 'CREATE INDEX %' "); - if( rc!=SQLITE_OK ) goto end_of_vacuum; - rc = execExecSql(db, pzErrMsg, - "SELECT 'CREATE UNIQUE INDEX vacuum_db.' || substr(sql,21) " - " FROM sqlite_master WHERE sql LIKE 'CREATE UNIQUE INDEX %'"); + rc = execSqlF(db, pzErrMsg, + "SELECT sql FROM \"%w\".sqlite_master" + " WHERE type='index' AND length(sql)>10", + zDbMain + ); if( rc!=SQLITE_OK ) goto end_of_vacuum; + db->init.iDb = 0; /* Loop through the tables in the main database. For each, do ** an "INSERT INTO vacuum_db.xxx SELECT * FROM main.xxx;" to copy ** the contents to the temporary database. */ - rc = execExecSql(db, pzErrMsg, - "SELECT 'INSERT INTO vacuum_db.' || quote(name) " - "|| ' SELECT * FROM main.' || quote(name) || ';'" - "FROM main.sqlite_master " - "WHERE type = 'table' AND name!='sqlite_sequence' " - " AND coalesce(rootpage,1)>0" + rc = execSqlF(db, pzErrMsg, + "SELECT'INSERT INTO vacuum_db.'||quote(name)" + "||' SELECT*FROM\"%w\".'||quote(name)" + "FROM vacuum_db.sqlite_master " + "WHERE type='table'AND coalesce(rootpage,1)>0", + zDbMain ); + assert( (db->flags & SQLITE_Vacuum)!=0 ); + db->flags &= ~SQLITE_Vacuum; if( rc!=SQLITE_OK ) goto end_of_vacuum; - /* Copy over the sequence table - */ - rc = execExecSql(db, pzErrMsg, - "SELECT 'DELETE FROM vacuum_db.' || quote(name) || ';' " - "FROM vacuum_db.sqlite_master WHERE name='sqlite_sequence' " - ); - if( rc!=SQLITE_OK ) goto end_of_vacuum; - rc = execExecSql(db, pzErrMsg, - "SELECT 'INSERT INTO vacuum_db.' || quote(name) " - "|| ' SELECT * FROM main.' || quote(name) || ';' " - "FROM vacuum_db.sqlite_master WHERE name=='sqlite_sequence';" - ); - if( rc!=SQLITE_OK ) goto end_of_vacuum; - - /* Copy the triggers, views, and virtual tables from the main database ** over to the temporary database. None of these objects has any ** associated storage, so all we have to do is copy their entries ** from the SQLITE_MASTER table. */ - rc = execSql(db, pzErrMsg, - "INSERT INTO vacuum_db.sqlite_master " - " SELECT type, name, tbl_name, rootpage, sql" - " FROM main.sqlite_master" - " WHERE type='view' OR type='trigger'" - " OR (type='table' AND rootpage=0)" + rc = execSqlF(db, pzErrMsg, + "INSERT INTO vacuum_db.sqlite_master" + " SELECT*FROM \"%w\".sqlite_master" + " WHERE type IN('view','trigger')" + " OR(type='table'AND rootpage=0)", + zDbMain ); if( rc ) goto end_of_vacuum; @@ -107275,10 +124040,11 @@ SQLITE_PRIVATE int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){ end_of_vacuum: /* Restore the original value of db->flags */ + db->init.iDb = 0; db->flags = saved_flags; db->nChange = saved_nChange; db->nTotalChange = saved_nTotalChange; - db->xTrace = saved_xTrace; + db->mTrace = saved_mTrace; sqlite3BtreeSetPageSize(pMain, -1, -1, 1); /* Currently there is an SQL level transaction open on the vacuum @@ -107321,6 +124087,7 @@ end_of_vacuum: ** This file contains code used to help implement virtual tables. */ #ifndef SQLITE_OMIT_VIRTUALTABLE +/* #include "sqliteInt.h" */ /* ** Before a virtual table xCreate() or xConnect() method is invoked, the @@ -107332,8 +124099,45 @@ end_of_vacuum: struct VtabCtx { VTable *pVTable; /* The virtual table being constructed */ Table *pTab; /* The Table object to which the virtual table belongs */ + VtabCtx *pPrior; /* Parent context (if any) */ + int bDeclared; /* True after sqlite3_declare_vtab() is called */ }; +/* +** Construct and install a Module object for a virtual table. When this +** routine is called, it is guaranteed that all appropriate locks are held +** and the module is not already part of the connection. +*/ +SQLITE_PRIVATE Module *sqlite3VtabCreateModule( + sqlite3 *db, /* Database in which module is registered */ + const char *zName, /* Name assigned to this module */ + const sqlite3_module *pModule, /* The definition of the module */ + void *pAux, /* Context pointer for xCreate/xConnect */ + void (*xDestroy)(void *) /* Module destructor function */ +){ + Module *pMod; + int nName = sqlite3Strlen30(zName); + pMod = (Module *)sqlite3DbMallocRawNN(db, sizeof(Module) + nName + 1); + if( pMod ){ + Module *pDel; + char *zCopy = (char *)(&pMod[1]); + memcpy(zCopy, zName, nName+1); + pMod->zName = zCopy; + pMod->pModule = pModule; + pMod->pAux = pAux; + pMod->xDestroy = xDestroy; + pMod->pEpoTab = 0; + pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,(void*)pMod); + assert( pDel==0 || pDel==pMod ); + if( pDel ){ + sqlite3OomFault(db); + sqlite3DbFree(db, pDel); + pMod = 0; + } + } + return pMod; +} + /* ** The actual function that does the work of creating a new module. ** This function implements the sqlite3_create_module() and @@ -107347,34 +124151,15 @@ static int createModule( void (*xDestroy)(void *) /* Module destructor function */ ){ int rc = SQLITE_OK; - int nName; sqlite3_mutex_enter(db->mutex); - nName = sqlite3Strlen30(zName); - if( sqlite3HashFind(&db->aModule, zName, nName) ){ + if( sqlite3HashFind(&db->aModule, zName) ){ rc = SQLITE_MISUSE_BKPT; }else{ - Module *pMod; - pMod = (Module *)sqlite3DbMallocRaw(db, sizeof(Module) + nName + 1); - if( pMod ){ - Module *pDel; - char *zCopy = (char *)(&pMod[1]); - memcpy(zCopy, zName, nName+1); - pMod->zName = zCopy; - pMod->pModule = pModule; - pMod->pAux = pAux; - pMod->xDestroy = xDestroy; - pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,nName,(void*)pMod); - assert( pDel==0 || pDel==pMod ); - if( pDel ){ - db->mallocFailed = 1; - sqlite3DbFree(db, pDel); - } - } + (void)sqlite3VtabCreateModule(db, zName, pModule, pAux, xDestroy); } rc = sqlite3ApiExit(db, rc); if( rc!=SQLITE_OK && xDestroy ) xDestroy(pAux); - sqlite3_mutex_leave(db->mutex); return rc; } @@ -107389,6 +124174,9 @@ SQLITE_API int sqlite3_create_module( const sqlite3_module *pModule, /* The definition of the module */ void *pAux /* Context pointer for xCreate/xConnect */ ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT; +#endif return createModule(db, zName, pModule, pAux, 0); } @@ -107402,6 +124190,9 @@ SQLITE_API int sqlite3_create_module_v2( void *pAux, /* Context pointer for xCreate/xConnect */ void (*xDestroy)(void *) /* Module destructor function */ ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT; +#endif return createModule(db, zName, pModule, pAux, xDestroy); } @@ -107585,23 +124376,17 @@ SQLITE_PRIVATE void sqlite3VtabClear(sqlite3 *db, Table *p){ ** deleted. */ static void addModuleArgument(sqlite3 *db, Table *pTable, char *zArg){ - int i = pTable->nModuleArg++; - int nBytes = sizeof(char *)*(1+pTable->nModuleArg); + int nBytes = sizeof(char *)*(2+pTable->nModuleArg); char **azModuleArg; azModuleArg = sqlite3DbRealloc(db, pTable->azModuleArg, nBytes); if( azModuleArg==0 ){ - int j; - for(j=0; jazModuleArg[j]); - } sqlite3DbFree(db, zArg); - sqlite3DbFree(db, pTable->azModuleArg); - pTable->nModuleArg = 0; }else{ + int i = pTable->nModuleArg++; azModuleArg[i] = zArg; azModuleArg[i+1] = 0; + pTable->azModuleArg = azModuleArg; } - pTable->azModuleArg = azModuleArg; } /* @@ -107634,7 +124419,12 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse( addModuleArgument(db, pTable, sqlite3NameFromToken(db, pModuleName)); addModuleArgument(db, pTable, 0); addModuleArgument(db, pTable, sqlite3DbStrDup(db, pTable->zName)); - pParse->sNameToken.n = (int)(&pModuleName->z[pModuleName->n] - pName1->z); + assert( (pParse->sNameToken.z==pName2->z && pName2->z!=0) + || (pParse->sNameToken.z==pName1->z && pName2->z==0) + ); + pParse->sNameToken.n = (int)( + &pModuleName->z[pModuleName->n] - pParse->sNameToken.z + ); #ifndef SQLITE_OMIT_AUTHORIZATION /* Creating a virtual table invokes the authorization callback twice. @@ -107644,7 +124434,7 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse( */ if( pTable->azModuleArg ){ sqlite3AuthCheck(pParse, SQLITE_CREATE_VTABLE, pTable->zName, - pTable->azModuleArg[0], pParse->db->aDb[iDb].zName); + pTable->azModuleArg[0], pParse->db->aDb[iDb].zDbSName); } #endif } @@ -107686,6 +124476,7 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ char *zStmt; char *zWhere; int iDb; + int iReg; Vdbe *v; /* Compute the complete text of the CREATE VIRTUAL TABLE statement */ @@ -107707,7 +124498,7 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ "UPDATE %Q.%s " "SET type='table', name=%Q, tbl_name=%Q, rootpage=0, sql=%Q " "WHERE rowid=#%d", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), + db->aDb[iDb].zDbSName, MASTER_NAME, pTab->zName, pTab->zName, zStmt, @@ -107717,11 +124508,13 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ v = sqlite3GetVdbe(pParse); sqlite3ChangeCookie(pParse, iDb); - sqlite3VdbeAddOp2(v, OP_Expire, 0, 0); + sqlite3VdbeAddOp0(v, OP_Expire); zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName); sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere); - sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0, - pTab->zName, sqlite3Strlen30(pTab->zName) + 1); + + iReg = ++pParse->nMem; + sqlite3VdbeLoadString(v, iReg, pTab->zName); + sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg); } /* If we are rereading the sqlite_master table create the in-memory @@ -107733,11 +124526,10 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){ Table *pOld; Schema *pSchema = pTab->pSchema; const char *zName = pTab->zName; - int nName = sqlite3Strlen30(zName); assert( sqlite3SchemaMutexHeld(db, 0, pSchema) ); - pOld = sqlite3HashInsert(&pSchema->tblHash, zName, nName, pTab); + pOld = sqlite3HashInsert(&pSchema->tblHash, zName, pTab); if( pOld ){ - db->mallocFailed = 1; + sqlite3OomFault(db); assert( pTab==pOld ); /* Malloc must have failed inside HashInsert() */ return; } @@ -107765,7 +124557,7 @@ SQLITE_PRIVATE void sqlite3VtabArgExtend(Parse *pParse, Token *p){ pArg->z = p->z; pArg->n = p->n; }else{ - assert(pArg->z < p->z); + assert(pArg->z <= p->z); pArg->n = (int)(&p->z[p->n] - pArg->z); } } @@ -107782,40 +124574,54 @@ static int vtabCallConstructor( int (*xConstruct)(sqlite3*,void*,int,const char*const*,sqlite3_vtab**,char**), char **pzErr ){ - VtabCtx sCtx, *pPriorCtx; + VtabCtx sCtx; VTable *pVTable; int rc; const char *const*azArg = (const char *const*)pTab->azModuleArg; int nArg = pTab->nModuleArg; char *zErr = 0; - char *zModuleName = sqlite3MPrintf(db, "%s", pTab->zName); + char *zModuleName; int iDb; + VtabCtx *pCtx; + /* Check that the virtual-table is not already being initialized */ + for(pCtx=db->pVtabCtx; pCtx; pCtx=pCtx->pPrior){ + if( pCtx->pTab==pTab ){ + *pzErr = sqlite3MPrintf(db, + "vtable constructor called recursively: %s", pTab->zName + ); + return SQLITE_LOCKED; + } + } + + zModuleName = sqlite3MPrintf(db, "%s", pTab->zName); if( !zModuleName ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pVTable = sqlite3DbMallocZero(db, sizeof(VTable)); if( !pVTable ){ sqlite3DbFree(db, zModuleName); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } pVTable->db = db; pVTable->pMod = pMod; iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - pTab->azModuleArg[1] = db->aDb[iDb].zName; + pTab->azModuleArg[1] = db->aDb[iDb].zDbSName; /* Invoke the virtual table constructor */ assert( &db->pVtabCtx ); assert( xConstruct ); sCtx.pTab = pTab; sCtx.pVTable = pVTable; - pPriorCtx = db->pVtabCtx; + sCtx.pPrior = db->pVtabCtx; + sCtx.bDeclared = 0; db->pVtabCtx = &sCtx; rc = xConstruct(db, pMod->pAux, nArg, azArg, &pVTable->pVtab, &zErr); - db->pVtabCtx = pPriorCtx; - if( rc==SQLITE_NOMEM ) db->mallocFailed = 1; + db->pVtabCtx = sCtx.pPrior; + if( rc==SQLITE_NOMEM ) sqlite3OomFault(db); + assert( sCtx.pTab==pTab ); if( SQLITE_OK!=rc ){ if( zErr==0 ){ @@ -107828,15 +124634,17 @@ static int vtabCallConstructor( }else if( ALWAYS(pVTable->pVtab) ){ /* Justification of ALWAYS(): A correct vtab constructor must allocate ** the sqlite3_vtab object if successful. */ + memset(pVTable->pVtab, 0, sizeof(pVTable->pVtab[0])); pVTable->pVtab->pModule = pMod->pModule; pVTable->nRef = 1; - if( sCtx.pTab ){ + if( sCtx.bDeclared==0 ){ const char *zFormat = "vtable constructor did not declare schema: %s"; *pzErr = sqlite3MPrintf(db, zFormat, pTab->zName); sqlite3VtabUnlock(pVTable); rc = SQLITE_ERROR; }else{ int iCol; + u8 oooHidden = 0; /* If everything went according to plan, link the new VTable structure ** into the linked list headed by pTab->pVTable. Then loop through the ** columns of the table to see if any of them contain the token "hidden". @@ -107846,19 +124654,16 @@ static int vtabCallConstructor( pTab->pVTable = pVTable; for(iCol=0; iColnCol; iCol++){ - char *zType = pTab->aCol[iCol].zType; + char *zType = sqlite3ColumnType(&pTab->aCol[iCol], ""); int nType; int i = 0; - if( !zType ) continue; nType = sqlite3Strlen30(zType); - if( sqlite3StrNICmp("hidden", zType, 6)||(zType[6] && zType[6]!=' ') ){ - for(i=0; iaCol[iCol].colFlags |= COLFLAG_HIDDEN; + oooHidden = TF_OOOHidden; + }else{ + pTab->tabFlags |= oooHidden; } } } @@ -107901,7 +124709,7 @@ SQLITE_PRIVATE int sqlite3VtabCallConnect(Parse *pParse, Table *pTab){ /* Locate the required virtual table module */ zMod = pTab->azModuleArg[0]; - pMod = (Module*)sqlite3HashFind(&db->aModule, zMod, sqlite3Strlen30(zMod)); + pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); if( !pMod ){ const char *zModule = pTab->azModuleArg[0]; @@ -107931,7 +124739,7 @@ static int growVTrans(sqlite3 *db){ int nBytes = sizeof(sqlite3_vtab *) * (db->nVTrans + ARRAY_INCR); aVTrans = sqlite3DbRealloc(db, (void *)db->aVTrans, nBytes); if( !aVTrans ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memset(&aVTrans[db->nVTrans], 0, sizeof(sqlite3_vtab *)*ARRAY_INCR); db->aVTrans = aVTrans; @@ -107954,7 +124762,7 @@ static void addToVTrans(sqlite3 *db, VTable *pVTab){ ** This function is invoked by the vdbe to call the xCreate method ** of the virtual table named zTab in database iDb. ** -** If an error occurs, *pzErr is set to point an an English language +** If an error occurs, *pzErr is set to point to an English language ** description of the error and an SQLITE_XXX error code is returned. ** In this case the caller must call sqlite3DbFree(db, ) on *pzErr. */ @@ -107964,18 +124772,18 @@ SQLITE_PRIVATE int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, Module *pMod; const char *zMod; - pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName); + pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); assert( pTab && (pTab->tabFlags & TF_Virtual)!=0 && !pTab->pVTable ); /* Locate the required virtual table module */ zMod = pTab->azModuleArg[0]; - pMod = (Module*)sqlite3HashFind(&db->aModule, zMod, sqlite3Strlen30(zMod)); + pMod = (Module*)sqlite3HashFind(&db->aModule, zMod); /* If the module has been registered and includes a Create method, ** invoke it now. If the module has not been registered, return an ** error. Otherwise, do nothing. */ - if( !pMod ){ + if( pMod==0 || pMod->pModule->xCreate==0 || pMod->pModule->xDestroy==0 ){ *pzErr = sqlite3MPrintf(db, "no such module: %s", zMod); rc = SQLITE_ERROR; }else{ @@ -108000,23 +124808,30 @@ SQLITE_PRIVATE int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, ** virtual table module. */ SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ + VtabCtx *pCtx; Parse *pParse; - int rc = SQLITE_OK; Table *pTab; char *zErr = 0; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zCreateTable==0 ){ + return SQLITE_MISUSE_BKPT; + } +#endif sqlite3_mutex_enter(db->mutex); - if( !db->pVtabCtx || !(pTab = db->pVtabCtx->pTab) ){ - sqlite3Error(db, SQLITE_MISUSE, 0); + pCtx = db->pVtabCtx; + if( !pCtx || pCtx->bDeclared ){ + sqlite3Error(db, SQLITE_MISUSE); sqlite3_mutex_leave(db->mutex); return SQLITE_MISUSE_BKPT; } + pTab = pCtx->pTab; assert( (pTab->tabFlags & TF_Virtual)!=0 ); pParse = sqlite3StackAllocZero(db, sizeof(*pParse)); if( pParse==0 ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; }else{ pParse->declareVtab = 1; pParse->db = db; @@ -108029,14 +124844,28 @@ SQLITE_API int sqlite3_declare_vtab(sqlite3 *db, const char *zCreateTable){ && (pParse->pNewTable->tabFlags & TF_Virtual)==0 ){ if( !pTab->aCol ){ - pTab->aCol = pParse->pNewTable->aCol; - pTab->nCol = pParse->pNewTable->nCol; - pParse->pNewTable->nCol = 0; - pParse->pNewTable->aCol = 0; + Table *pNew = pParse->pNewTable; + Index *pIdx; + pTab->aCol = pNew->aCol; + pTab->nCol = pNew->nCol; + pTab->tabFlags |= pNew->tabFlags & (TF_WithoutRowid|TF_NoVisibleRowid); + pNew->nCol = 0; + pNew->aCol = 0; + assert( pTab->pIndex==0 ); + if( !HasRowid(pNew) && pCtx->pVTable->pMod->pModule->xUpdate!=0 ){ + rc = SQLITE_ERROR; + } + pIdx = pNew->pIndex; + if( pIdx ){ + assert( pIdx->pNext==0 ); + pTab->pIndex = pIdx; + pNew->pIndex = 0; + pIdx->pTable = pTab; + } } - db->pVtabCtx->pTab = 0; + pCtx->bDeclared = 1; }else{ - sqlite3Error(db, SQLITE_ERROR, (zErr ? "%s" : 0), zErr); + sqlite3ErrorWithMsg(db, SQLITE_ERROR, (zErr ? "%s" : 0), zErr); sqlite3DbFree(db, zErr); rc = SQLITE_ERROR; } @@ -108067,13 +124896,20 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab int rc = SQLITE_OK; Table *pTab; - pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName); - if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){ - VTable *p = vtabDisconnectAll(db, pTab); - - assert( rc==SQLITE_OK ); - rc = p->pMod->pModule->xDestroy(p->pVtab); - + pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zDbSName); + if( pTab!=0 && ALWAYS(pTab->pVTable!=0) ){ + VTable *p; + int (*xDestroy)(sqlite3_vtab *); + for(p=pTab->pVTable; p; p=p->pNext){ + assert( p->pVtab ); + if( p->pVtab->nRef>0 ){ + return SQLITE_LOCKED; + } + } + p = vtabDisconnectAll(db, pTab); + xDestroy = p->pMod->pModule->xDestroy; + assert( xDestroy!=0 ); /* Checked before the virtual table is created */ + rc = xDestroy(p->pVtab); /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */ if( rc==SQLITE_OK ){ assert( pTab->pVTable==p && p->pNext==0 ); @@ -108097,8 +124933,10 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab static void callFinaliser(sqlite3 *db, int offset){ int i; if( db->aVTrans ){ + VTable **aVTrans = db->aVTrans; + db->aVTrans = 0; for(i=0; inVTrans; i++){ - VTable *pVTab = db->aVTrans[i]; + VTable *pVTab = aVTrans[i]; sqlite3_vtab *p = pVTab->pVtab; if( p ){ int (*x)(sqlite3_vtab *); @@ -108108,9 +124946,8 @@ static void callFinaliser(sqlite3 *db, int offset){ pVTab->iSavepoint = 0; sqlite3VtabUnlock(pVTab); } - sqlite3DbFree(db, db->aVTrans); + sqlite3DbFree(db, aVTrans); db->nVTrans = 0; - db->aVTrans = 0; } } @@ -108198,7 +125035,12 @@ SQLITE_PRIVATE int sqlite3VtabBegin(sqlite3 *db, VTable *pVTab){ if( rc==SQLITE_OK ){ rc = pModule->xBegin(pVTab->pVtab); if( rc==SQLITE_OK ){ + int iSvpt = db->nStatement + db->nSavepoint; addToVTrans(db, pVTab); + if( iSvpt && pModule->xSavepoint ){ + pVTab->iSavepoint = iSvpt; + rc = pModule->xSavepoint(pVTab->pVtab, iSvpt-1); + } } } } @@ -108224,7 +125066,7 @@ SQLITE_PRIVATE int sqlite3VtabSavepoint(sqlite3 *db, int op, int iSavepoint){ int rc = SQLITE_OK; assert( op==SAVEPOINT_RELEASE||op==SAVEPOINT_ROLLBACK||op==SAVEPOINT_BEGIN ); - assert( iSavepoint>=0 ); + assert( iSavepoint>=-1 ); if( db->aVTrans ){ int i; for(i=0; rc==SQLITE_OK && inVTrans; i++){ @@ -108275,7 +125117,7 @@ SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction( Table *pTab; sqlite3_vtab *pVtab; sqlite3_module *pMod; - void (*xFunc)(sqlite3_context*,int,sqlite3_value**) = 0; + void (*xSFunc)(sqlite3_context*,int,sqlite3_value**) = 0; void *pArg = 0; FuncDef *pNew; int rc = 0; @@ -108303,7 +125145,7 @@ SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction( for(z=(unsigned char*)zLowerName; *z; z++){ *z = sqlite3UpperToLower[*z]; } - rc = pMod->xFindFunction(pVtab, nArg, zLowerName, &xFunc, &pArg); + rc = pMod->xFindFunction(pVtab, nArg, zLowerName, &xSFunc, &pArg); sqlite3DbFree(db, zLowerName); } if( rc==0 ){ @@ -108318,9 +125160,9 @@ SQLITE_PRIVATE FuncDef *sqlite3VtabOverloadFunction( return pDef; } *pNew = *pDef; - pNew->zName = (char *)&pNew[1]; - memcpy(pNew->zName, pDef->zName, sqlite3Strlen30(pDef->zName)+1); - pNew->xFunc = xFunc; + pNew->zName = (const char*)&pNew[1]; + memcpy((char*)&pNew[1], pDef->zName, sqlite3Strlen30(pDef->zName)+1); + pNew->xSFunc = xSFunc; pNew->pUserData = pArg; pNew->funcFlags |= SQLITE_FUNC_EPHEM; return pNew; @@ -108342,12 +125184,76 @@ SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse *pParse, Table *pTab){ if( pTab==pToplevel->apVtabLock[i] ) return; } n = (pToplevel->nVtabLock+1)*sizeof(pToplevel->apVtabLock[0]); - apVtabLock = sqlite3_realloc(pToplevel->apVtabLock, n); + apVtabLock = sqlite3_realloc64(pToplevel->apVtabLock, n); if( apVtabLock ){ pToplevel->apVtabLock = apVtabLock; pToplevel->apVtabLock[pToplevel->nVtabLock++] = pTab; }else{ - pToplevel->db->mallocFailed = 1; + sqlite3OomFault(pToplevel->db); + } +} + +/* +** Check to see if virtual table module pMod can be have an eponymous +** virtual table instance. If it can, create one if one does not already +** exist. Return non-zero if the eponymous virtual table instance exists +** when this routine returns, and return zero if it does not exist. +** +** An eponymous virtual table instance is one that is named after its +** module, and more importantly, does not require a CREATE VIRTUAL TABLE +** statement in order to come into existance. Eponymous virtual table +** instances always exist. They cannot be DROP-ed. +** +** Any virtual table module for which xConnect and xCreate are the same +** method can have an eponymous virtual table instance. +*/ +SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse *pParse, Module *pMod){ + const sqlite3_module *pModule = pMod->pModule; + Table *pTab; + char *zErr = 0; + int rc; + sqlite3 *db = pParse->db; + if( pMod->pEpoTab ) return 1; + if( pModule->xCreate!=0 && pModule->xCreate!=pModule->xConnect ) return 0; + pTab = sqlite3DbMallocZero(db, sizeof(Table)); + if( pTab==0 ) return 0; + pTab->zName = sqlite3DbStrDup(db, pMod->zName); + if( pTab->zName==0 ){ + sqlite3DbFree(db, pTab); + return 0; + } + pMod->pEpoTab = pTab; + pTab->nTabRef = 1; + pTab->pSchema = db->aDb[0].pSchema; + pTab->tabFlags |= TF_Virtual; + pTab->nModuleArg = 0; + pTab->iPKey = -1; + addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); + addModuleArgument(db, pTab, 0); + addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); + rc = vtabCallConstructor(db, pTab, pMod, pModule->xConnect, &zErr); + if( rc ){ + sqlite3ErrorMsg(pParse, "%s", zErr); + sqlite3DbFree(db, zErr); + sqlite3VtabEponymousTableClear(db, pMod); + return 0; + } + return 1; +} + +/* +** Erase the eponymous virtual table instance associated with +** virtual table module pMod, if it exists. +*/ +SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3 *db, Module *pMod){ + Table *pTab = pMod->pEpoTab; + if( pTab!=0 ){ + /* Mark the table as Ephemeral prior to deleting it, so that the + ** sqlite3DeleteTable() routine will know that it is not stored in + ** the schema. */ + pTab->tabFlags |= TF_Ephemeral; + sqlite3DeleteTable(db, pTab); + pMod->pEpoTab = 0; } } @@ -108362,6 +125268,9 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){ static const unsigned char aMap[] = { SQLITE_ROLLBACK, SQLITE_ABORT, SQLITE_FAIL, SQLITE_IGNORE, SQLITE_REPLACE }; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif assert( OE_Rollback==1 && OE_Abort==2 && OE_Fail==3 ); assert( OE_Ignore==4 && OE_Replace==5 ); assert( db->vtabOnConflict>=1 && db->vtabOnConflict<=5 ); @@ -108377,8 +125286,10 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ va_list ap; int rc = SQLITE_OK; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); - va_start(ap, op); switch( op ){ case SQLITE_VTAB_CONSTRAINT_SUPPORT: { @@ -108397,7 +125308,7 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ } va_end(ap); - if( rc!=SQLITE_OK ) sqlite3Error(db, rc, 0); + if( rc!=SQLITE_OK ) sqlite3Error(db, rc); sqlite3_mutex_leave(db->mutex); return rc; } @@ -108405,9 +125316,9 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ #endif /* SQLITE_OMIT_VIRTUALTABLE */ /************** End of vtab.c ************************************************/ -/************** Begin file where.c *******************************************/ +/************** Begin file wherecode.c ***************************************/ /* -** 2001 September 15 +** 2015-06-06 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: @@ -108418,13 +125329,15 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ ** ************************************************************************* ** This module contains C code that generates VDBE code used to process -** the WHERE clause of SQL statements. This module is responsible for -** generating the code that loops through a table looking for applicable -** rows. Indices are selected and used to speed the search when doing -** so is applicable. Because this module is responsible for selecting -** indices, you might also think of this module as the "query optimizer". +** the WHERE clause of SQL statements. +** +** This file was split off from where.c on 2015-06-06 in order to reduce the +** size of where.c and make it easier to edit. This file contains the routines +** that actually generate the bulk of the WHERE loop code. The original where.c +** file retains the code that does query planning and analysis. */ -/************** Include whereInt.h in the middle of where.c ******************/ +/* #include "sqliteInt.h" */ +/************** Include whereInt.h in the middle of wherecode.c **************/ /************** Begin file whereInt.h ****************************************/ /* ** 2013-11-12 @@ -108447,7 +125360,7 @@ SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){ ** Trace output macros */ #if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) -/***/ int sqlite3WhereTrace = 0; +/***/ int sqlite3WhereTrace; #endif #if defined(SQLITE_DEBUG) \ && (defined(SQLITE_TEST) || defined(SQLITE_ENABLE_WHERETRACE)) @@ -108497,8 +125410,12 @@ struct WhereLevel { int addrCont; /* Jump here to continue with the next loop cycle */ int addrFirst; /* First instruction of interior of the loop */ int addrBody; /* Beginning of the body of this loop */ +#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS + u32 iLikeRepCntr; /* LIKE range processing counter register (times 2) */ + int addrLikeRep; /* LIKE range processing address */ +#endif u8 iFrom; /* Which entry in the FROM clause */ - u8 op, p5; /* Opcode and P5 of the opcode that ends the loop */ + u8 op, p3, p5; /* Opcode, P3 & P5 of the opcode that ends the loop */ int p1, p2; /* Operands of the opcode used to ends the loop */ union { /* Information that depends on pWLoop->wsFlags */ struct { @@ -108513,6 +125430,9 @@ struct WhereLevel { } u; struct WhereLoop *pWLoop; /* The selected WhereLoop object */ Bitmask notReady; /* FROM entries not usable at this level */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + int addrVisit; /* Address at which row is visited */ +#endif }; /* @@ -108543,25 +125463,27 @@ struct WhereLoop { union { struct { /* Information for internal btree tables */ u16 nEq; /* Number of equality constraints */ - u16 nSkip; /* Number of initial index columns to skip */ + u16 nBtm; /* Size of BTM vector */ + u16 nTop; /* Size of TOP vector */ Index *pIndex; /* Index used, or NULL */ } btree; struct { /* Information for virtual tables */ int idxNum; /* Index number */ u8 needFree; /* True if sqlite3_free(idxStr) is needed */ - u8 isOrdered; /* True if satisfies ORDER BY */ + i8 isOrdered; /* True if satisfies ORDER BY */ u16 omitMask; /* Terms that may be omitted */ char *idxStr; /* Index identifier string */ } vtab; } u; u32 wsFlags; /* WHERE_* flags describing the plan */ u16 nLTerm; /* Number of entries in aLTerm[] */ + u16 nSkip; /* Number of NULL aLTerm[] entries */ /**** whereLoopXfer() copies fields above ***********************/ # define WHERE_LOOP_XFER_SZ offsetof(WhereLoop,nLSlot) u16 nLSlot; /* Number of slots allocated for aLTerm[] */ WhereTerm **aLTerm; /* WhereTerms used */ WhereLoop *pNextLoop; /* Next WhereLoop object in the WhereClause */ - WhereTerm *aLTermSpace[4]; /* Initial aLTerm[] space */ + WhereTerm *aLTermSpace[3]; /* Initial aLTerm[] space */ }; /* This object holds the prerequisites and the cost of running a @@ -108584,10 +125506,6 @@ struct WhereOrSet { WhereOrCost a[N_OR_COST]; /* Set of best costs */ }; - -/* Forward declaration of methods */ -static int whereLoopResize(sqlite3*, WhereLoop*, int); - /* ** Each instance of this object holds a sequence of WhereLoop objects ** that implement some or all of a query plan. @@ -108604,15 +125522,15 @@ static int whereLoopResize(sqlite3*, WhereLoop*, int); ** 1. Then using those as a basis to compute the N best WherePath objects ** of length 2. And so forth until the length of WherePaths equals the ** number of nodes in the FROM clause. The best (lowest cost) WherePath -** at the end is the choosen query plan. +** at the end is the chosen query plan. */ struct WherePath { Bitmask maskLoop; /* Bitmask of all WhereLoop objects in this path */ Bitmask revLoop; /* aLoop[]s that should be reversed for ORDER BY */ LogEst nRow; /* Estimated number of rows generated by this path */ LogEst rCost; /* Total cost of this path */ - u8 isOrdered; /* True if this path satisfies ORDER BY */ - u8 isOrderedValid; /* True if the isOrdered field is valid */ + LogEst rUnsorted; /* Total cost of this path ignoring sorting costs */ + i8 isOrdered; /* No. of ORDER BY terms satisfied. -1 for unknown */ WhereLoop **aLoop; /* Array of WhereLoop objects implementing this path */ }; @@ -108669,18 +125587,20 @@ struct WherePath { */ struct WhereTerm { Expr *pExpr; /* Pointer to the subexpression that is this term */ + WhereClause *pWC; /* The clause this term is part of */ + LogEst truthProb; /* Probability of truth for this expression */ + u16 wtFlags; /* TERM_xxx bit flags. See below */ + u16 eOperator; /* A WO_xx value describing */ + u8 nChild; /* Number of children that must disable us */ + u8 eMatchOp; /* Op for vtab MATCH/LIKE/GLOB/REGEXP terms */ int iParent; /* Disable pWC->a[iParent] when this term disabled */ int leftCursor; /* Cursor number of X in "X " */ + int iField; /* Field in (?,?,?) IN (SELECT...) vector */ union { int leftColumn; /* Column number of X in "X " */ WhereOrInfo *pOrInfo; /* Extra information if (eOperator & WO_OR)!=0 */ WhereAndInfo *pAndInfo; /* Extra information if (eOperator& WO_AND)!=0 */ } u; - LogEst truthProb; /* Probability of truth for this expression */ - u16 eOperator; /* A WO_xx value describing */ - u8 wtFlags; /* TERM_xxx bit flags. See below */ - u8 nChild; /* Number of children that must disable us */ - WhereClause *pWC; /* The clause this term is part of */ Bitmask prereqRight; /* Bitmask of tables used by pExpr->pRight */ Bitmask prereqAll; /* Bitmask of tables referenced by pExpr */ }; @@ -108700,6 +125620,10 @@ struct WhereTerm { #else # define TERM_VNULL 0x00 /* Disabled if not using stat3 */ #endif +#define TERM_LIKEOPT 0x100 /* Virtual terms from the LIKE optimization */ +#define TERM_LIKECOND 0x200 /* Conditionally this LIKE operator term */ +#define TERM_LIKE 0x400 /* The original LIKE operator */ +#define TERM_IS 0x800 /* Term.pExpr is an IS operator */ /* ** An instance of the WhereScan object is used as an iterator for locating @@ -108708,13 +125632,15 @@ struct WhereTerm { struct WhereScan { WhereClause *pOrigWC; /* Original, innermost WhereClause */ WhereClause *pWC; /* WhereClause currently being scanned */ - char *zCollName; /* Required collating sequence, if not NULL */ + const char *zCollName; /* Required collating sequence, if not NULL */ + Expr *pIdxExpr; /* Search for this index expression */ char idxaff; /* Must match this affinity, if zCollName!=NULL */ unsigned char nEquiv; /* Number of entries in aEquiv[] */ unsigned char iEquiv; /* Next unused slot in aEquiv[] */ u32 opMask; /* Acceptable operators */ int k; /* Resume scanning at this->pWC->a[this->k] */ - int aEquiv[22]; /* Cursor,Column pairs for equivalence classes */ + int aiCur[11]; /* Cursors in the equivalence class */ + i16 aiColumn[11]; /* Corresponding column number in the eq-class */ }; /* @@ -108791,6 +125717,11 @@ struct WhereMaskSet { int ix[BMS]; /* Cursor assigned to each bit */ }; +/* +** Initialize a WhereMaskSet object +*/ +#define initMaskSet(P) (P)->n=0 + /* ** This object is a convenience wrapper holding all information needed ** to construct WhereLoop objects for a particular query. @@ -108821,47 +125752,119 @@ struct WhereInfo { Parse *pParse; /* Parsing and code generating context */ SrcList *pTabList; /* List of tables in the join */ ExprList *pOrderBy; /* The ORDER BY clause or NULL */ - ExprList *pResultSet; /* Result set. DISTINCT operates on these */ - WhereLoop *pLoops; /* List of all WhereLoop objects */ - Bitmask revMask; /* Mask of ORDER BY terms that need reversing */ - LogEst nRowOut; /* Estimated number of output rows */ - u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */ - u8 bOBSat; /* ORDER BY satisfied by indices */ - u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE/DELETE */ - u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */ - u8 eDistinct; /* One of the WHERE_DISTINCT_* values below */ - u8 nLevel; /* Number of nested loop */ - int iTop; /* The very beginning of the WHERE loop */ + ExprList *pDistinctSet; /* DISTINCT over all these values */ + LogEst iLimit; /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */ + int aiCurOnePass[2]; /* OP_OpenWrite cursors for the ONEPASS opt */ int iContinue; /* Jump here to continue with next record */ int iBreak; /* Jump here to break out of the loop */ int savedNQueryLoop; /* pParse->nQueryLoop outside the WHERE loop */ - int aiCurOnePass[2]; /* OP_OpenWrite cursors for the ONEPASS opt */ - WhereMaskSet sMaskSet; /* Map cursor numbers to bitmasks */ + u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */ + u8 nLevel; /* Number of nested loop */ + i8 nOBSat; /* Number of ORDER BY terms satisfied by indices */ + u8 sorted; /* True if really sorted (not just grouped) */ + u8 eOnePass; /* ONEPASS_OFF, or _SINGLE, or _MULTI */ + u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */ + u8 eDistinct; /* One of the WHERE_DISTINCT_* values */ + u8 bOrderedInnerLoop; /* True if only the inner-most loop is ordered */ + int iTop; /* The very beginning of the WHERE loop */ + WhereLoop *pLoops; /* List of all WhereLoop objects */ + Bitmask revMask; /* Mask of ORDER BY terms that need reversing */ + LogEst nRowOut; /* Estimated number of output rows */ WhereClause sWC; /* Decomposition of the WHERE clause */ + WhereMaskSet sMaskSet; /* Map cursor numbers to bitmasks */ WhereLevel a[1]; /* Information about each nest loop in WHERE */ }; +/* +** Private interfaces - callable only by other where.c routines. +** +** where.c: +*/ +SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet*,int); +#ifdef WHERETRACE_ENABLED +SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC); +#endif +SQLITE_PRIVATE WhereTerm *sqlite3WhereFindTerm( + WhereClause *pWC, /* The WHERE clause to be searched */ + int iCur, /* Cursor number of LHS */ + int iColumn, /* Column number of LHS */ + Bitmask notReady, /* RHS must not overlap with this mask */ + u32 op, /* Mask of WO_xx values describing operator */ + Index *pIdx /* Must be compatible with this index, if not NULL */ +); + +/* wherecode.c: */ +#ifndef SQLITE_OMIT_EXPLAIN +SQLITE_PRIVATE int sqlite3WhereExplainOneScan( + Parse *pParse, /* Parse context */ + SrcList *pTabList, /* Table list this loop refers to */ + WhereLevel *pLevel, /* Scan to write OP_Explain opcode for */ + int iLevel, /* Value for "level" column of output */ + int iFrom, /* Value for "from" column of output */ + u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */ +); +#else +# define sqlite3WhereExplainOneScan(u,v,w,x,y,z) 0 +#endif /* SQLITE_OMIT_EXPLAIN */ +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +SQLITE_PRIVATE void sqlite3WhereAddScanStatus( + Vdbe *v, /* Vdbe to add scanstatus entry to */ + SrcList *pSrclist, /* FROM clause pLvl reads data from */ + WhereLevel *pLvl, /* Level to add scanstatus() entry for */ + int addrExplain /* Address of OP_Explain (or 0) */ +); +#else +# define sqlite3WhereAddScanStatus(a, b, c, d) ((void)d) +#endif +SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( + WhereInfo *pWInfo, /* Complete information about the WHERE clause */ + int iLevel, /* Which level of pWInfo->a[] should be coded */ + Bitmask notReady /* Which tables are currently available */ +); + +/* whereexpr.c: */ +SQLITE_PRIVATE void sqlite3WhereClauseInit(WhereClause*,WhereInfo*); +SQLITE_PRIVATE void sqlite3WhereClauseClear(WhereClause*); +SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause*,Expr*,u8); +SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet*, Expr*); +SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet*, ExprList*); +SQLITE_PRIVATE void sqlite3WhereExprAnalyze(SrcList*, WhereClause*); +SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, struct SrcList_item*, WhereClause*); + + + + + /* ** Bitmasks for the operators on WhereTerm objects. These are all ** operators that are of interest to the query planner. An ** OR-ed combination of these values can be used when searching for ** particular WhereTerms within a WhereClause. +** +** Value constraints: +** WO_EQ == SQLITE_INDEX_CONSTRAINT_EQ +** WO_LT == SQLITE_INDEX_CONSTRAINT_LT +** WO_LE == SQLITE_INDEX_CONSTRAINT_LE +** WO_GT == SQLITE_INDEX_CONSTRAINT_GT +** WO_GE == SQLITE_INDEX_CONSTRAINT_GE +** WO_MATCH == SQLITE_INDEX_CONSTRAINT_MATCH */ -#define WO_IN 0x001 -#define WO_EQ 0x002 +#define WO_IN 0x0001 +#define WO_EQ 0x0002 #define WO_LT (WO_EQ<<(TK_LT-TK_EQ)) #define WO_LE (WO_EQ<<(TK_LE-TK_EQ)) #define WO_GT (WO_EQ<<(TK_GT-TK_EQ)) #define WO_GE (WO_EQ<<(TK_GE-TK_EQ)) -#define WO_MATCH 0x040 -#define WO_ISNULL 0x080 -#define WO_OR 0x100 /* Two or more OR-connected terms */ -#define WO_AND 0x200 /* Two or more AND-connected terms */ -#define WO_EQUIV 0x400 /* Of the form A==B, both columns */ -#define WO_NOOP 0x800 /* This term does not restrict search space */ +#define WO_MATCH 0x0040 +#define WO_IS 0x0080 +#define WO_ISNULL 0x0100 +#define WO_OR 0x0200 /* Two or more OR-connected terms */ +#define WO_AND 0x0400 /* Two or more AND-connected terms */ +#define WO_EQUIV 0x0800 /* Of the form A==B, both columns */ +#define WO_NOOP 0x1000 /* This term does not restrict search space */ -#define WO_ALL 0xfff /* Mask of all possible WO_* values */ -#define WO_SINGLE 0x0ff /* Mask of all non-compound WO_* values */ +#define WO_ALL 0x1fff /* Mask of all possible WO_* values */ +#define WO_SINGLE 0x01ff /* Mask of all non-compound WO_* values */ /* ** These are definitions of bits in the WhereLoop.wsFlags field. @@ -108885,139 +125888,2064 @@ struct WhereInfo { #define WHERE_MULTI_OR 0x00002000 /* OR using multiple indices */ #define WHERE_AUTO_INDEX 0x00004000 /* Uses an ephemeral index */ #define WHERE_SKIPSCAN 0x00008000 /* Uses the skip-scan algorithm */ +#define WHERE_UNQ_WANTED 0x00010000 /* WHERE_ONEROW would have been helpful*/ +#define WHERE_PARTIALIDX 0x00020000 /* The automatic index is partial */ /************** End of whereInt.h ********************************************/ -/************** Continuing where we left off in where.c **********************/ +/************** Continuing where we left off in wherecode.c ******************/ + +#ifndef SQLITE_OMIT_EXPLAIN /* -** Return the estimated number of output rows from a WHERE clause +** Return the name of the i-th column of the pIdx index. */ -SQLITE_PRIVATE u64 sqlite3WhereOutputRowCount(WhereInfo *pWInfo){ - return sqlite3LogEstToInt(pWInfo->nRowOut); +static const char *explainIndexColumnName(Index *pIdx, int i){ + i = pIdx->aiColumn[i]; + if( i==XN_EXPR ) return ""; + if( i==XN_ROWID ) return "rowid"; + return pIdx->pTable->aCol[i].zName; } /* -** Return one of the WHERE_DISTINCT_xxxxx values to indicate how this -** WHERE clause returns outputs for DISTINCT processing. -*/ -SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo *pWInfo){ - return pWInfo->eDistinct; -} - -/* -** Return TRUE if the WHERE clause returns rows in ORDER BY order. -** Return FALSE if the output needs to be sorted. -*/ -SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo *pWInfo){ - return pWInfo->bOBSat!=0; -} - -/* -** Return the VDBE address or label to jump to in order to continue -** immediately with the next row of a WHERE clause. -*/ -SQLITE_PRIVATE int sqlite3WhereContinueLabel(WhereInfo *pWInfo){ - return pWInfo->iContinue; -} - -/* -** Return the VDBE address or label to jump to in order to break -** out of a WHERE loop. -*/ -SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo *pWInfo){ - return pWInfo->iBreak; -} - -/* -** Return TRUE if an UPDATE or DELETE statement can operate directly on -** the rowids returned by a WHERE clause. Return FALSE if doing an -** UPDATE or DELETE might change subsequent WHERE clause results. +** This routine is a helper for explainIndexRange() below ** -** If the ONEPASS optimization is used (if this routine returns true) -** then also write the indices of open cursors used by ONEPASS -** into aiCur[0] and aiCur[1]. iaCur[0] gets the cursor of the data -** table and iaCur[1] gets the cursor used by an auxiliary index. -** Either value may be -1, indicating that cursor is not used. -** Any cursors returned will have been opened for writing. -** -** aiCur[0] and aiCur[1] both get -1 if the where-clause logic is -** unable to use the ONEPASS optimization. +** pStr holds the text of an expression that we are building up one term +** at a time. This routine adds a new term to the end of the expression. +** Terms are separated by AND so add the "AND" text for second and subsequent +** terms only. */ -SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo *pWInfo, int *aiCur){ - memcpy(aiCur, pWInfo->aiCurOnePass, sizeof(int)*2); - return pWInfo->okOnePass; -} - -/* -** Move the content of pSrc into pDest -*/ -static void whereOrMove(WhereOrSet *pDest, WhereOrSet *pSrc){ - pDest->n = pSrc->n; - memcpy(pDest->a, pSrc->a, pDest->n*sizeof(pDest->a[0])); -} - -/* -** Try to insert a new prerequisite/cost entry into the WhereOrSet pSet. -** -** The new entry might overwrite an existing entry, or it might be -** appended, or it might be discarded. Do whatever is the right thing -** so that pSet keeps the N_OR_COST best entries seen so far. -*/ -static int whereOrInsert( - WhereOrSet *pSet, /* The WhereOrSet to be updated */ - Bitmask prereq, /* Prerequisites of the new entry */ - LogEst rRun, /* Run-cost of the new entry */ - LogEst nOut /* Number of outputs for the new entry */ +static void explainAppendTerm( + StrAccum *pStr, /* The text expression being built */ + Index *pIdx, /* Index to read column names from */ + int nTerm, /* Number of terms */ + int iTerm, /* Zero-based index of first term. */ + int bAnd, /* Non-zero to append " AND " */ + const char *zOp /* Name of the operator */ ){ - u16 i; - WhereOrCost *p; - for(i=pSet->n, p=pSet->a; i>0; i--, p++){ - if( rRun<=p->rRun && (prereq & p->prereq)==prereq ){ - goto whereOrInsert_done; - } - if( p->rRun<=rRun && (p->prereq & prereq)==p->prereq ){ - return 0; - } + int i; + + assert( nTerm>=1 ); + if( bAnd ) sqlite3StrAccumAppend(pStr, " AND ", 5); + + if( nTerm>1 ) sqlite3StrAccumAppend(pStr, "(", 1); + for(i=0; ina[pSet->n++]; - p->nOut = nOut; + if( nTerm>1 ) sqlite3StrAccumAppend(pStr, ")", 1); + + sqlite3StrAccumAppend(pStr, zOp, 1); + + if( nTerm>1 ) sqlite3StrAccumAppend(pStr, "(", 1); + for(i=0; i1 ) sqlite3StrAccumAppend(pStr, ")", 1); +} + +/* +** Argument pLevel describes a strategy for scanning table pTab. This +** function appends text to pStr that describes the subset of table +** rows scanned by the strategy in the form of an SQL expression. +** +** For example, if the query: +** +** SELECT * FROM t1 WHERE a=1 AND b>2; +** +** is run and there is an index on (a, b), then this function returns a +** string similar to: +** +** "a=? AND b>?" +*/ +static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop){ + Index *pIndex = pLoop->u.btree.pIndex; + u16 nEq = pLoop->u.btree.nEq; + u16 nSkip = pLoop->nSkip; + int i, j; + + if( nEq==0 && (pLoop->wsFlags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))==0 ) return; + sqlite3StrAccumAppend(pStr, " (", 2); + for(i=0; i=nSkip ? "%s=?" : "ANY(%s)", z); + } + + j = i; + if( pLoop->wsFlags&WHERE_BTM_LIMIT ){ + explainAppendTerm(pStr, pIndex, pLoop->u.btree.nBtm, j, i, ">"); + i = 1; + } + if( pLoop->wsFlags&WHERE_TOP_LIMIT ){ + explainAppendTerm(pStr, pIndex, pLoop->u.btree.nTop, j, i, "<"); + } + sqlite3StrAccumAppend(pStr, ")", 1); +} + +/* +** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN +** command, or if either SQLITE_DEBUG or SQLITE_ENABLE_STMT_SCANSTATUS was +** defined at compile-time. If it is not a no-op, a single OP_Explain opcode +** is added to the output to describe the table scan strategy in pLevel. +** +** If an OP_Explain opcode is added to the VM, its address is returned. +** Otherwise, if no OP_Explain is coded, zero is returned. +*/ +SQLITE_PRIVATE int sqlite3WhereExplainOneScan( + Parse *pParse, /* Parse context */ + SrcList *pTabList, /* Table list this loop refers to */ + WhereLevel *pLevel, /* Scan to write OP_Explain opcode for */ + int iLevel, /* Value for "level" column of output */ + int iFrom, /* Value for "from" column of output */ + u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */ +){ + int ret = 0; +#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS) + if( pParse->explain==2 ) +#endif + { + struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom]; + Vdbe *v = pParse->pVdbe; /* VM being constructed */ + sqlite3 *db = pParse->db; /* Database handle */ + int iId = pParse->iSelectId; /* Select id (left-most output column) */ + int isSearch; /* True for a SEARCH. False for SCAN. */ + WhereLoop *pLoop; /* The controlling WhereLoop object */ + u32 flags; /* Flags that describe this loop */ + char *zMsg; /* Text to add to EQP output */ + StrAccum str; /* EQP output string */ + char zBuf[100]; /* Initial space for EQP output string */ + + pLoop = pLevel->pWLoop; + flags = pLoop->wsFlags; + if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_OR_SUBCLAUSE) ) return 0; + + isSearch = (flags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0 + || ((flags&WHERE_VIRTUALTABLE)==0 && (pLoop->u.btree.nEq>0)) + || (wctrlFlags&(WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX)); + + sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH); + sqlite3StrAccumAppendAll(&str, isSearch ? "SEARCH" : "SCAN"); + if( pItem->pSelect ){ + sqlite3XPrintf(&str, " SUBQUERY %d", pItem->iSelectId); + }else{ + sqlite3XPrintf(&str, " TABLE %s", pItem->zName); + } + + if( pItem->zAlias ){ + sqlite3XPrintf(&str, " AS %s", pItem->zAlias); + } + if( (flags & (WHERE_IPK|WHERE_VIRTUALTABLE))==0 ){ + const char *zFmt = 0; + Index *pIdx; + + assert( pLoop->u.btree.pIndex!=0 ); + pIdx = pLoop->u.btree.pIndex; + assert( !(flags&WHERE_AUTO_INDEX) || (flags&WHERE_IDX_ONLY) ); + if( !HasRowid(pItem->pTab) && IsPrimaryKeyIndex(pIdx) ){ + if( isSearch ){ + zFmt = "PRIMARY KEY"; + } + }else if( flags & WHERE_PARTIALIDX ){ + zFmt = "AUTOMATIC PARTIAL COVERING INDEX"; + }else if( flags & WHERE_AUTO_INDEX ){ + zFmt = "AUTOMATIC COVERING INDEX"; + }else if( flags & WHERE_IDX_ONLY ){ + zFmt = "COVERING INDEX %s"; + }else{ + zFmt = "INDEX %s"; + } + if( zFmt ){ + sqlite3StrAccumAppend(&str, " USING ", 7); + sqlite3XPrintf(&str, zFmt, pIdx->zName); + explainIndexRange(&str, pLoop); + } + }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){ + const char *zRangeOp; + if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){ + zRangeOp = "="; + }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){ + zRangeOp = ">? AND rowid<"; + }else if( flags&WHERE_BTM_LIMIT ){ + zRangeOp = ">"; + }else{ + assert( flags&WHERE_TOP_LIMIT); + zRangeOp = "<"; + } + sqlite3XPrintf(&str, " USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp); + } +#ifndef SQLITE_OMIT_VIRTUALTABLE + else if( (flags & WHERE_VIRTUALTABLE)!=0 ){ + sqlite3XPrintf(&str, " VIRTUAL TABLE INDEX %d:%s", + pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr); + } +#endif +#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS + if( pLoop->nOut>=10 ){ + sqlite3XPrintf(&str, " (~%llu rows)", sqlite3LogEstToInt(pLoop->nOut)); + }else{ + sqlite3StrAccumAppend(&str, " (~1 row)", 9); + } +#endif + zMsg = sqlite3StrAccumFinish(&str); + ret = sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg,P4_DYNAMIC); + } + return ret; +} +#endif /* SQLITE_OMIT_EXPLAIN */ + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS +/* +** Configure the VM passed as the first argument with an +** sqlite3_stmt_scanstatus() entry corresponding to the scan used to +** implement level pLvl. Argument pSrclist is a pointer to the FROM +** clause that the scan reads data from. +** +** If argument addrExplain is not 0, it must be the address of an +** OP_Explain instruction that describes the same loop. +*/ +SQLITE_PRIVATE void sqlite3WhereAddScanStatus( + Vdbe *v, /* Vdbe to add scanstatus entry to */ + SrcList *pSrclist, /* FROM clause pLvl reads data from */ + WhereLevel *pLvl, /* Level to add scanstatus() entry for */ + int addrExplain /* Address of OP_Explain (or 0) */ +){ + const char *zObj = 0; + WhereLoop *pLoop = pLvl->pWLoop; + if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 && pLoop->u.btree.pIndex!=0 ){ + zObj = pLoop->u.btree.pIndex->zName; }else{ - p = pSet->a; - for(i=1; in; i++){ - if( p->rRun>pSet->a[i].rRun ) p = pSet->a + i; - } - if( p->rRun<=rRun ) return 0; + zObj = pSrclist->a[pLvl->iFrom].zName; + } + sqlite3VdbeScanStatus( + v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj + ); +} +#endif + + +/* +** Disable a term in the WHERE clause. Except, do not disable the term +** if it controls a LEFT OUTER JOIN and it did not originate in the ON +** or USING clause of that join. +** +** Consider the term t2.z='ok' in the following queries: +** +** (1) SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.x WHERE t2.z='ok' +** (2) SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.x AND t2.z='ok' +** (3) SELECT * FROM t1, t2 WHERE t1.a=t2.x AND t2.z='ok' +** +** The t2.z='ok' is disabled in the in (2) because it originates +** in the ON clause. The term is disabled in (3) because it is not part +** of a LEFT OUTER JOIN. In (1), the term is not disabled. +** +** Disabling a term causes that term to not be tested in the inner loop +** of the join. Disabling is an optimization. When terms are satisfied +** by indices, we disable them to prevent redundant tests in the inner +** loop. We would get the correct results if nothing were ever disabled, +** but joins might run a little slower. The trick is to disable as much +** as we can without disabling too much. If we disabled in (1), we'd get +** the wrong answer. See ticket #813. +** +** If all the children of a term are disabled, then that term is also +** automatically disabled. In this way, terms get disabled if derived +** virtual terms are tested first. For example: +** +** x GLOB 'abc*' AND x>='abc' AND x<'acd' +** \___________/ \______/ \_____/ +** parent child1 child2 +** +** Only the parent term was in the original WHERE clause. The child1 +** and child2 terms were added by the LIKE optimization. If both of +** the virtual child terms are valid, then testing of the parent can be +** skipped. +** +** Usually the parent term is marked as TERM_CODED. But if the parent +** term was originally TERM_LIKE, then the parent gets TERM_LIKECOND instead. +** The TERM_LIKECOND marking indicates that the term should be coded inside +** a conditional such that is only evaluated on the second pass of a +** LIKE-optimization loop, when scanning BLOBs instead of strings. +*/ +static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){ + int nLoop = 0; + while( ALWAYS(pTerm!=0) + && (pTerm->wtFlags & TERM_CODED)==0 + && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin)) + && (pLevel->notReady & pTerm->prereqAll)==0 + ){ + if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){ + pTerm->wtFlags |= TERM_LIKECOND; + }else{ + pTerm->wtFlags |= TERM_CODED; + } + if( pTerm->iParent<0 ) break; + pTerm = &pTerm->pWC->a[pTerm->iParent]; + pTerm->nChild--; + if( pTerm->nChild!=0 ) break; + nLoop++; } -whereOrInsert_done: - p->prereq = prereq; - p->rRun = rRun; - if( p->nOut>nOut ) p->nOut = nOut; - return 1; } /* -** Initialize a preallocated WhereClause structure. +** Code an OP_Affinity opcode to apply the column affinity string zAff +** to the n registers starting at base. +** +** As an optimization, SQLITE_AFF_BLOB entries (which are no-ops) at the +** beginning and end of zAff are ignored. If all entries in zAff are +** SQLITE_AFF_BLOB, then no code gets generated. +** +** This routine makes its own copy of zAff so that the caller is free +** to modify zAff after this routine returns. */ -static void whereClauseInit( - WhereClause *pWC, /* The WhereClause to be initialized */ - WhereInfo *pWInfo /* The WHERE processing context */ -){ - pWC->pWInfo = pWInfo; - pWC->pOuter = 0; - pWC->nTerm = 0; - pWC->nSlot = ArraySize(pWC->aStatic); - pWC->a = pWC->aStatic; +static void codeApplyAffinity(Parse *pParse, int base, int n, char *zAff){ + Vdbe *v = pParse->pVdbe; + if( zAff==0 ){ + assert( pParse->db->mallocFailed ); + return; + } + assert( v!=0 ); + + /* Adjust base and n to skip over SQLITE_AFF_BLOB entries at the beginning + ** and end of the affinity string. + */ + while( n>0 && zAff[0]==SQLITE_AFF_BLOB ){ + n--; + base++; + zAff++; + } + while( n>1 && zAff[n-1]==SQLITE_AFF_BLOB ){ + n--; + } + + /* Code the OP_Affinity opcode if there is anything left to do. */ + if( n>0 ){ + sqlite3VdbeAddOp4(v, OP_Affinity, base, n, 0, zAff, n); + sqlite3ExprCacheAffinityChange(pParse, base, n); + } } -/* Forward reference */ -static void whereClauseClear(WhereClause*); +/* +** Expression pRight, which is the RHS of a comparison operation, is +** either a vector of n elements or, if n==1, a scalar expression. +** Before the comparison operation, affinity zAff is to be applied +** to the pRight values. This function modifies characters within the +** affinity string to SQLITE_AFF_BLOB if either: +** +** * the comparison will be performed with no affinity, or +** * the affinity change in zAff is guaranteed not to change the value. +*/ +static void updateRangeAffinityStr( + Expr *pRight, /* RHS of comparison */ + int n, /* Number of vector elements in comparison */ + char *zAff /* Affinity string to modify */ +){ + int i; + for(i=0; ipExpr; + Vdbe *v = pParse->pVdbe; + int iReg; /* Register holding results */ + + assert( pLevel->pWLoop->aLTerm[iEq]==pTerm ); + assert( iTarget>0 ); + if( pX->op==TK_EQ || pX->op==TK_IS ){ + iReg = sqlite3ExprCodeTarget(pParse, pX->pRight, iTarget); + }else if( pX->op==TK_ISNULL ){ + iReg = iTarget; + sqlite3VdbeAddOp2(v, OP_Null, 0, iReg); +#ifndef SQLITE_OMIT_SUBQUERY + }else{ + int eType = IN_INDEX_NOOP; + int iTab; + struct InLoop *pIn; + WhereLoop *pLoop = pLevel->pWLoop; + int i; + int nEq = 0; + int *aiMap = 0; + + if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 + && pLoop->u.btree.pIndex!=0 + && pLoop->u.btree.pIndex->aSortOrder[iEq] + ){ + testcase( iEq==0 ); + testcase( bRev ); + bRev = !bRev; + } + assert( pX->op==TK_IN ); + iReg = iTarget; + + for(i=0; iaLTerm[i] && pLoop->aLTerm[i]->pExpr==pX ){ + disableTerm(pLevel, pTerm); + return iTarget; + } + } + for(i=iEq;inLTerm; i++){ + if( ALWAYS(pLoop->aLTerm[i]) && pLoop->aLTerm[i]->pExpr==pX ) nEq++; + } + + if( (pX->flags & EP_xIsSelect)==0 || pX->x.pSelect->pEList->nExpr==1 ){ + eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, 0); + }else{ + Select *pSelect = pX->x.pSelect; + sqlite3 *db = pParse->db; + u16 savedDbOptFlags = db->dbOptFlags; + ExprList *pOrigRhs = pSelect->pEList; + ExprList *pOrigLhs = pX->pLeft->x.pList; + ExprList *pRhs = 0; /* New Select.pEList for RHS */ + ExprList *pLhs = 0; /* New pX->pLeft vector */ + + for(i=iEq;inLTerm; i++){ + if( pLoop->aLTerm[i]->pExpr==pX ){ + int iField = pLoop->aLTerm[i]->iField - 1; + Expr *pNewRhs = sqlite3ExprDup(db, pOrigRhs->a[iField].pExpr, 0); + Expr *pNewLhs = sqlite3ExprDup(db, pOrigLhs->a[iField].pExpr, 0); + + pRhs = sqlite3ExprListAppend(pParse, pRhs, pNewRhs); + pLhs = sqlite3ExprListAppend(pParse, pLhs, pNewLhs); + } + } + if( !db->mallocFailed ){ + Expr *pLeft = pX->pLeft; + + if( pSelect->pOrderBy ){ + /* If the SELECT statement has an ORDER BY clause, zero the + ** iOrderByCol variables. These are set to non-zero when an + ** ORDER BY term exactly matches one of the terms of the + ** result-set. Since the result-set of the SELECT statement may + ** have been modified or reordered, these variables are no longer + ** set correctly. Since setting them is just an optimization, + ** it's easiest just to zero them here. */ + ExprList *pOrderBy = pSelect->pOrderBy; + for(i=0; inExpr; i++){ + pOrderBy->a[i].u.x.iOrderByCol = 0; + } + } + + /* Take care here not to generate a TK_VECTOR containing only a + ** single value. Since the parser never creates such a vector, some + ** of the subroutines do not handle this case. */ + if( pLhs->nExpr==1 ){ + pX->pLeft = pLhs->a[0].pExpr; + }else{ + pLeft->x.pList = pLhs; + aiMap = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int) * nEq); + testcase( aiMap==0 ); + } + pSelect->pEList = pRhs; + db->dbOptFlags |= SQLITE_QueryFlattener; + eType = sqlite3FindInIndex(pParse, pX, IN_INDEX_LOOP, 0, aiMap); + db->dbOptFlags = savedDbOptFlags; + testcase( aiMap!=0 && aiMap[0]!=0 ); + pSelect->pEList = pOrigRhs; + pLeft->x.pList = pOrigLhs; + pX->pLeft = pLeft; + } + sqlite3ExprListDelete(pParse->db, pLhs); + sqlite3ExprListDelete(pParse->db, pRhs); + } + + if( eType==IN_INDEX_INDEX_DESC ){ + testcase( bRev ); + bRev = !bRev; + } + iTab = pX->iTable; + sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iTab, 0); + VdbeCoverageIf(v, bRev); + VdbeCoverageIf(v, !bRev); + assert( (pLoop->wsFlags & WHERE_MULTI_OR)==0 ); + + pLoop->wsFlags |= WHERE_IN_ABLE; + if( pLevel->u.in.nIn==0 ){ + pLevel->addrNxt = sqlite3VdbeMakeLabel(v); + } + + i = pLevel->u.in.nIn; + pLevel->u.in.nIn += nEq; + pLevel->u.in.aInLoop = + sqlite3DbReallocOrFree(pParse->db, pLevel->u.in.aInLoop, + sizeof(pLevel->u.in.aInLoop[0])*pLevel->u.in.nIn); + pIn = pLevel->u.in.aInLoop; + if( pIn ){ + int iMap = 0; /* Index in aiMap[] */ + pIn += i; + for(i=iEq;inLTerm; i++){ + if( pLoop->aLTerm[i]->pExpr==pX ){ + int iOut = iReg + i - iEq; + if( eType==IN_INDEX_ROWID ){ + testcase( nEq>1 ); /* Happens with a UNIQUE index on ROWID */ + pIn->addrInTop = sqlite3VdbeAddOp2(v, OP_Rowid, iTab, iOut); + }else{ + int iCol = aiMap ? aiMap[iMap++] : 0; + pIn->addrInTop = sqlite3VdbeAddOp3(v,OP_Column,iTab, iCol, iOut); + } + sqlite3VdbeAddOp1(v, OP_IsNull, iOut); VdbeCoverage(v); + if( i==iEq ){ + pIn->iCur = iTab; + pIn->eEndLoopOp = bRev ? OP_PrevIfOpen : OP_NextIfOpen; + }else{ + pIn->eEndLoopOp = OP_Noop; + } + pIn++; + } + } + }else{ + pLevel->u.in.nIn = 0; + } + sqlite3DbFree(pParse->db, aiMap); +#endif + } + disableTerm(pLevel, pTerm); + return iReg; +} + +/* +** Generate code that will evaluate all == and IN constraints for an +** index scan. +** +** For example, consider table t1(a,b,c,d,e,f) with index i1(a,b,c). +** Suppose the WHERE clause is this: a==5 AND b IN (1,2,3) AND c>5 AND c<10 +** The index has as many as three equality constraints, but in this +** example, the third "c" value is an inequality. So only two +** constraints are coded. This routine will generate code to evaluate +** a==5 and b IN (1,2,3). The current values for a and b will be stored +** in consecutive registers and the index of the first register is returned. +** +** In the example above nEq==2. But this subroutine works for any value +** of nEq including 0. If nEq==0, this routine is nearly a no-op. +** The only thing it does is allocate the pLevel->iMem memory cell and +** compute the affinity string. +** +** The nExtraReg parameter is 0 or 1. It is 0 if all WHERE clause constraints +** are == or IN and are covered by the nEq. nExtraReg is 1 if there is +** an inequality constraint (such as the "c>=5 AND c<10" in the example) that +** occurs after the nEq quality constraints. +** +** This routine allocates a range of nEq+nExtraReg memory cells and returns +** the index of the first memory cell in that range. The code that +** calls this routine will use that memory range to store keys for +** start and termination conditions of the loop. +** key value of the loop. If one or more IN operators appear, then +** this routine allocates an additional nEq memory cells for internal +** use. +** +** Before returning, *pzAff is set to point to a buffer containing a +** copy of the column affinity string of the index allocated using +** sqlite3DbMalloc(). Except, entries in the copy of the string associated +** with equality constraints that use BLOB or NONE affinity are set to +** SQLITE_AFF_BLOB. This is to deal with SQL such as the following: +** +** CREATE TABLE t1(a TEXT PRIMARY KEY, b); +** SELECT ... FROM t1 AS t2, t1 WHERE t1.a = t2.b; +** +** In the example above, the index on t1(a) has TEXT affinity. But since +** the right hand side of the equality constraint (t2.b) has BLOB/NONE affinity, +** no conversion should be attempted before using a t2.b value as part of +** a key to search the index. Hence the first byte in the returned affinity +** string in this example would be set to SQLITE_AFF_BLOB. +*/ +static int codeAllEqualityTerms( + Parse *pParse, /* Parsing context */ + WhereLevel *pLevel, /* Which nested loop of the FROM we are coding */ + int bRev, /* Reverse the order of IN operators */ + int nExtraReg, /* Number of extra registers to allocate */ + char **pzAff /* OUT: Set to point to affinity string */ +){ + u16 nEq; /* The number of == or IN constraints to code */ + u16 nSkip; /* Number of left-most columns to skip */ + Vdbe *v = pParse->pVdbe; /* The vm under construction */ + Index *pIdx; /* The index being used for this loop */ + WhereTerm *pTerm; /* A single constraint term */ + WhereLoop *pLoop; /* The WhereLoop object */ + int j; /* Loop counter */ + int regBase; /* Base register */ + int nReg; /* Number of registers to allocate */ + char *zAff; /* Affinity string to return */ + + /* This module is only called on query plans that use an index. */ + pLoop = pLevel->pWLoop; + assert( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 ); + nEq = pLoop->u.btree.nEq; + nSkip = pLoop->nSkip; + pIdx = pLoop->u.btree.pIndex; + assert( pIdx!=0 ); + + /* Figure out how many memory cells we will need then allocate them. + */ + regBase = pParse->nMem + 1; + nReg = pLoop->u.btree.nEq + nExtraReg; + pParse->nMem += nReg; + + zAff = sqlite3DbStrDup(pParse->db,sqlite3IndexAffinityStr(pParse->db,pIdx)); + assert( zAff!=0 || pParse->db->mallocFailed ); + + if( nSkip ){ + int iIdxCur = pLevel->iIdxCur; + sqlite3VdbeAddOp1(v, (bRev?OP_Last:OP_Rewind), iIdxCur); + VdbeCoverageIf(v, bRev==0); + VdbeCoverageIf(v, bRev!=0); + VdbeComment((v, "begin skip-scan on %s", pIdx->zName)); + j = sqlite3VdbeAddOp0(v, OP_Goto); + pLevel->addrSkip = sqlite3VdbeAddOp4Int(v, (bRev?OP_SeekLT:OP_SeekGT), + iIdxCur, 0, regBase, nSkip); + VdbeCoverageIf(v, bRev==0); + VdbeCoverageIf(v, bRev!=0); + sqlite3VdbeJumpHere(v, j); + for(j=0; jaiColumn[j]==XN_EXPR ); + VdbeComment((v, "%s", explainIndexColumnName(pIdx, j))); + } + } + + /* Evaluate the equality constraints + */ + assert( zAff==0 || (int)strlen(zAff)>=nEq ); + for(j=nSkip; jaLTerm[j]; + assert( pTerm!=0 ); + /* The following testcase is true for indices with redundant columns. + ** Ex: CREATE INDEX i1 ON t1(a,b,a); SELECT * FROM t1 WHERE a=0 AND b=0; */ + testcase( (pTerm->wtFlags & TERM_CODED)!=0 ); + testcase( pTerm->wtFlags & TERM_VIRTUAL ); + r1 = codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, regBase+j); + if( r1!=regBase+j ){ + if( nReg==1 ){ + sqlite3ReleaseTempReg(pParse, regBase); + regBase = r1; + }else{ + sqlite3VdbeAddOp2(v, OP_SCopy, r1, regBase+j); + } + } + if( pTerm->eOperator & WO_IN ){ + if( pTerm->pExpr->flags & EP_xIsSelect ){ + /* No affinity ever needs to be (or should be) applied to a value + ** from the RHS of an "? IN (SELECT ...)" expression. The + ** sqlite3FindInIndex() routine has already ensured that the + ** affinity of the comparison has been applied to the value. */ + if( zAff ) zAff[j] = SQLITE_AFF_BLOB; + } + }else if( (pTerm->eOperator & WO_ISNULL)==0 ){ + Expr *pRight = pTerm->pExpr->pRight; + if( (pTerm->wtFlags & TERM_IS)==0 && sqlite3ExprCanBeNull(pRight) ){ + sqlite3VdbeAddOp2(v, OP_IsNull, regBase+j, pLevel->addrBrk); + VdbeCoverage(v); + } + if( zAff ){ + if( sqlite3CompareAffinity(pRight, zAff[j])==SQLITE_AFF_BLOB ){ + zAff[j] = SQLITE_AFF_BLOB; + } + if( sqlite3ExprNeedsNoAffinityChange(pRight, zAff[j]) ){ + zAff[j] = SQLITE_AFF_BLOB; + } + } + } + } + *pzAff = zAff; + return regBase; +} + +#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS +/* +** If the most recently coded instruction is a constant range constraint +** (a string literal) that originated from the LIKE optimization, then +** set P3 and P5 on the OP_String opcode so that the string will be cast +** to a BLOB at appropriate times. +** +** The LIKE optimization trys to evaluate "x LIKE 'abc%'" as a range +** expression: "x>='ABC' AND x<'abd'". But this requires that the range +** scan loop run twice, once for strings and a second time for BLOBs. +** The OP_String opcodes on the second pass convert the upper and lower +** bound string constants to blobs. This routine makes the necessary changes +** to the OP_String opcodes for that to happen. +** +** Except, of course, if SQLITE_LIKE_DOESNT_MATCH_BLOBS is defined, then +** only the one pass through the string space is required, so this routine +** becomes a no-op. +*/ +static void whereLikeOptimizationStringFixup( + Vdbe *v, /* prepared statement under construction */ + WhereLevel *pLevel, /* The loop that contains the LIKE operator */ + WhereTerm *pTerm /* The upper or lower bound just coded */ +){ + if( pTerm->wtFlags & TERM_LIKEOPT ){ + VdbeOp *pOp; + assert( pLevel->iLikeRepCntr>0 ); + pOp = sqlite3VdbeGetOp(v, -1); + assert( pOp!=0 ); + assert( pOp->opcode==OP_String8 + || pTerm->pWC->pWInfo->pParse->db->mallocFailed ); + pOp->p3 = (int)(pLevel->iLikeRepCntr>>1); /* Register holding counter */ + pOp->p5 = (u8)(pLevel->iLikeRepCntr&1); /* ASC or DESC */ + } +} +#else +# define whereLikeOptimizationStringFixup(A,B,C) +#endif + +#ifdef SQLITE_ENABLE_CURSOR_HINTS +/* +** Information is passed from codeCursorHint() down to individual nodes of +** the expression tree (by sqlite3WalkExpr()) using an instance of this +** structure. +*/ +struct CCurHint { + int iTabCur; /* Cursor for the main table */ + int iIdxCur; /* Cursor for the index, if pIdx!=0. Unused otherwise */ + Index *pIdx; /* The index used to access the table */ +}; + +/* +** This function is called for every node of an expression that is a candidate +** for a cursor hint on an index cursor. For TK_COLUMN nodes that reference +** the table CCurHint.iTabCur, verify that the same column can be +** accessed through the index. If it cannot, then set pWalker->eCode to 1. +*/ +static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){ + struct CCurHint *pHint = pWalker->u.pCCurHint; + assert( pHint->pIdx!=0 ); + if( pExpr->op==TK_COLUMN + && pExpr->iTable==pHint->iTabCur + && sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn)<0 + ){ + pWalker->eCode = 1; + } + return WRC_Continue; +} + +/* +** Test whether or not expression pExpr, which was part of a WHERE clause, +** should be included in the cursor-hint for a table that is on the rhs +** of a LEFT JOIN. Set Walker.eCode to non-zero before returning if the +** expression is not suitable. +** +** An expression is unsuitable if it might evaluate to non NULL even if +** a TK_COLUMN node that does affect the value of the expression is set +** to NULL. For example: +** +** col IS NULL +** col IS NOT NULL +** coalesce(col, 1) +** CASE WHEN col THEN 0 ELSE 1 END +*/ +static int codeCursorHintIsOrFunction(Walker *pWalker, Expr *pExpr){ + if( pExpr->op==TK_IS + || pExpr->op==TK_ISNULL || pExpr->op==TK_ISNOT + || pExpr->op==TK_NOTNULL || pExpr->op==TK_CASE + ){ + pWalker->eCode = 1; + }else if( pExpr->op==TK_FUNCTION ){ + int d1; + char d2[3]; + if( 0==sqlite3IsLikeFunction(pWalker->pParse->db, pExpr, &d1, d2) ){ + pWalker->eCode = 1; + } + } + + return WRC_Continue; +} + + +/* +** This function is called on every node of an expression tree used as an +** argument to the OP_CursorHint instruction. If the node is a TK_COLUMN +** that accesses any table other than the one identified by +** CCurHint.iTabCur, then do the following: +** +** 1) allocate a register and code an OP_Column instruction to read +** the specified column into the new register, and +** +** 2) transform the expression node to a TK_REGISTER node that reads +** from the newly populated register. +** +** Also, if the node is a TK_COLUMN that does access the table idenified +** by pCCurHint.iTabCur, and an index is being used (which we will +** know because CCurHint.pIdx!=0) then transform the TK_COLUMN into +** an access of the index rather than the original table. +*/ +static int codeCursorHintFixExpr(Walker *pWalker, Expr *pExpr){ + int rc = WRC_Continue; + struct CCurHint *pHint = pWalker->u.pCCurHint; + if( pExpr->op==TK_COLUMN ){ + if( pExpr->iTable!=pHint->iTabCur ){ + Vdbe *v = pWalker->pParse->pVdbe; + int reg = ++pWalker->pParse->nMem; /* Register for column value */ + sqlite3ExprCodeGetColumnOfTable( + v, pExpr->pTab, pExpr->iTable, pExpr->iColumn, reg + ); + pExpr->op = TK_REGISTER; + pExpr->iTable = reg; + }else if( pHint->pIdx!=0 ){ + pExpr->iTable = pHint->iIdxCur; + pExpr->iColumn = sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn); + assert( pExpr->iColumn>=0 ); + } + }else if( pExpr->op==TK_AGG_FUNCTION ){ + /* An aggregate function in the WHERE clause of a query means this must + ** be a correlated sub-query, and expression pExpr is an aggregate from + ** the parent context. Do not walk the function arguments in this case. + ** + ** todo: It should be possible to replace this node with a TK_REGISTER + ** expression, as the result of the expression must be stored in a + ** register at this point. The same holds for TK_AGG_COLUMN nodes. */ + rc = WRC_Prune; + } + return rc; +} + +/* +** Insert an OP_CursorHint instruction if it is appropriate to do so. +*/ +static void codeCursorHint( + struct SrcList_item *pTabItem, /* FROM clause item */ + WhereInfo *pWInfo, /* The where clause */ + WhereLevel *pLevel, /* Which loop to provide hints for */ + WhereTerm *pEndRange /* Hint this end-of-scan boundary term if not NULL */ +){ + Parse *pParse = pWInfo->pParse; + sqlite3 *db = pParse->db; + Vdbe *v = pParse->pVdbe; + Expr *pExpr = 0; + WhereLoop *pLoop = pLevel->pWLoop; + int iCur; + WhereClause *pWC; + WhereTerm *pTerm; + int i, j; + struct CCurHint sHint; + Walker sWalker; + + if( OptimizationDisabled(db, SQLITE_CursorHints) ) return; + iCur = pLevel->iTabCur; + assert( iCur==pWInfo->pTabList->a[pLevel->iFrom].iCursor ); + sHint.iTabCur = iCur; + sHint.iIdxCur = pLevel->iIdxCur; + sHint.pIdx = pLoop->u.btree.pIndex; + memset(&sWalker, 0, sizeof(sWalker)); + sWalker.pParse = pParse; + sWalker.u.pCCurHint = &sHint; + pWC = &pWInfo->sWC; + for(i=0; inTerm; i++){ + pTerm = &pWC->a[i]; + if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; + if( pTerm->prereqAll & pLevel->notReady ) continue; + + /* Any terms specified as part of the ON(...) clause for any LEFT + ** JOIN for which the current table is not the rhs are omitted + ** from the cursor-hint. + ** + ** If this table is the rhs of a LEFT JOIN, "IS" or "IS NULL" terms + ** that were specified as part of the WHERE clause must be excluded. + ** This is to address the following: + ** + ** SELECT ... t1 LEFT JOIN t2 ON (t1.a=t2.b) WHERE t2.c IS NULL; + ** + ** Say there is a single row in t2 that matches (t1.a=t2.b), but its + ** t2.c values is not NULL. If the (t2.c IS NULL) constraint is + ** pushed down to the cursor, this row is filtered out, causing + ** SQLite to synthesize a row of NULL values. Which does match the + ** WHERE clause, and so the query returns a row. Which is incorrect. + ** + ** For the same reason, WHERE terms such as: + ** + ** WHERE 1 = (t2.c IS NULL) + ** + ** are also excluded. See codeCursorHintIsOrFunction() for details. + */ + if( pTabItem->fg.jointype & JT_LEFT ){ + Expr *pExpr = pTerm->pExpr; + if( !ExprHasProperty(pExpr, EP_FromJoin) + || pExpr->iRightJoinTable!=pTabItem->iCursor + ){ + sWalker.eCode = 0; + sWalker.xExprCallback = codeCursorHintIsOrFunction; + sqlite3WalkExpr(&sWalker, pTerm->pExpr); + if( sWalker.eCode ) continue; + } + }else{ + if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) continue; + } + + /* All terms in pWLoop->aLTerm[] except pEndRange are used to initialize + ** the cursor. These terms are not needed as hints for a pure range + ** scan (that has no == terms) so omit them. */ + if( pLoop->u.btree.nEq==0 && pTerm!=pEndRange ){ + for(j=0; jnLTerm && pLoop->aLTerm[j]!=pTerm; j++){} + if( jnLTerm ) continue; + } + + /* No subqueries or non-deterministic functions allowed */ + if( sqlite3ExprContainsSubquery(pTerm->pExpr) ) continue; + + /* For an index scan, make sure referenced columns are actually in + ** the index. */ + if( sHint.pIdx!=0 ){ + sWalker.eCode = 0; + sWalker.xExprCallback = codeCursorHintCheckExpr; + sqlite3WalkExpr(&sWalker, pTerm->pExpr); + if( sWalker.eCode ) continue; + } + + /* If we survive all prior tests, that means this term is worth hinting */ + pExpr = sqlite3ExprAnd(db, pExpr, sqlite3ExprDup(db, pTerm->pExpr, 0)); + } + if( pExpr!=0 ){ + sWalker.xExprCallback = codeCursorHintFixExpr; + sqlite3WalkExpr(&sWalker, pExpr); + sqlite3VdbeAddOp4(v, OP_CursorHint, + (sHint.pIdx ? sHint.iIdxCur : sHint.iTabCur), 0, 0, + (const char*)pExpr, P4_EXPR); + } +} +#else +# define codeCursorHint(A,B,C,D) /* No-op */ +#endif /* SQLITE_ENABLE_CURSOR_HINTS */ + +/* +** Cursor iCur is open on an intkey b-tree (a table). Register iRowid contains +** a rowid value just read from cursor iIdxCur, open on index pIdx. This +** function generates code to do a deferred seek of cursor iCur to the +** rowid stored in register iRowid. +** +** Normally, this is just: +** +** OP_Seek $iCur $iRowid +** +** However, if the scan currently being coded is a branch of an OR-loop and +** the statement currently being coded is a SELECT, then P3 of the OP_Seek +** is set to iIdxCur and P4 is set to point to an array of integers +** containing one entry for each column of the table cursor iCur is open +** on. For each table column, if the column is the i'th column of the +** index, then the corresponding array entry is set to (i+1). If the column +** does not appear in the index at all, the array entry is set to 0. +*/ +static void codeDeferredSeek( + WhereInfo *pWInfo, /* Where clause context */ + Index *pIdx, /* Index scan is using */ + int iCur, /* Cursor for IPK b-tree */ + int iIdxCur /* Index cursor */ +){ + Parse *pParse = pWInfo->pParse; /* Parse context */ + Vdbe *v = pParse->pVdbe; /* Vdbe to generate code within */ + + assert( iIdxCur>0 ); + assert( pIdx->aiColumn[pIdx->nColumn-1]==-1 ); + + sqlite3VdbeAddOp3(v, OP_Seek, iIdxCur, 0, iCur); + if( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE) + && DbMaskAllZero(sqlite3ParseToplevel(pParse)->writeMask) + ){ + int i; + Table *pTab = pIdx->pTable; + int *ai = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*(pTab->nCol+1)); + if( ai ){ + ai[0] = pTab->nCol; + for(i=0; inColumn-1; i++){ + assert( pIdx->aiColumn[i]nCol ); + if( pIdx->aiColumn[i]>=0 ) ai[pIdx->aiColumn[i]+1] = i+1; + } + sqlite3VdbeChangeP4(v, -1, (char*)ai, P4_INTARRAY); + } + } +} + +/* +** If the expression passed as the second argument is a vector, generate +** code to write the first nReg elements of the vector into an array +** of registers starting with iReg. +** +** If the expression is not a vector, then nReg must be passed 1. In +** this case, generate code to evaluate the expression and leave the +** result in register iReg. +*/ +static void codeExprOrVector(Parse *pParse, Expr *p, int iReg, int nReg){ + assert( nReg>0 ); + if( sqlite3ExprIsVector(p) ){ +#ifndef SQLITE_OMIT_SUBQUERY + if( (p->flags & EP_xIsSelect) ){ + Vdbe *v = pParse->pVdbe; + int iSelect = sqlite3CodeSubselect(pParse, p, 0, 0); + sqlite3VdbeAddOp3(v, OP_Copy, iSelect, iReg, nReg-1); + }else +#endif + { + int i; + ExprList *pList = p->x.pList; + assert( nReg<=pList->nExpr ); + for(i=0; ia[i].pExpr, iReg+i); + } + } + }else{ + assert( nReg==1 ); + sqlite3ExprCode(pParse, p, iReg); + } +} + +/* +** Generate code for the start of the iLevel-th loop in the WHERE clause +** implementation described by pWInfo. +*/ +SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart( + WhereInfo *pWInfo, /* Complete information about the WHERE clause */ + int iLevel, /* Which level of pWInfo->a[] should be coded */ + Bitmask notReady /* Which tables are currently available */ +){ + int j, k; /* Loop counters */ + int iCur; /* The VDBE cursor for the table */ + int addrNxt; /* Where to jump to continue with the next IN case */ + int omitTable; /* True if we use the index only */ + int bRev; /* True if we need to scan in reverse order */ + WhereLevel *pLevel; /* The where level to be coded */ + WhereLoop *pLoop; /* The WhereLoop object being coded */ + WhereClause *pWC; /* Decomposition of the entire WHERE clause */ + WhereTerm *pTerm; /* A WHERE clause term */ + Parse *pParse; /* Parsing context */ + sqlite3 *db; /* Database connection */ + Vdbe *v; /* The prepared stmt under constructions */ + struct SrcList_item *pTabItem; /* FROM clause term being coded */ + int addrBrk; /* Jump here to break out of the loop */ + int addrCont; /* Jump here to continue with next cycle */ + int iRowidReg = 0; /* Rowid is stored in this register, if not zero */ + int iReleaseReg = 0; /* Temp register to free before returning */ + + pParse = pWInfo->pParse; + v = pParse->pVdbe; + pWC = &pWInfo->sWC; + db = pParse->db; + pLevel = &pWInfo->a[iLevel]; + pLoop = pLevel->pWLoop; + pTabItem = &pWInfo->pTabList->a[pLevel->iFrom]; + iCur = pTabItem->iCursor; + pLevel->notReady = notReady & ~sqlite3WhereGetMask(&pWInfo->sMaskSet, iCur); + bRev = (pWInfo->revMask>>iLevel)&1; + omitTable = (pLoop->wsFlags & WHERE_IDX_ONLY)!=0 + && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0; + VdbeModuleComment((v, "Begin WHERE-loop%d: %s",iLevel,pTabItem->pTab->zName)); + + /* Create labels for the "break" and "continue" instructions + ** for the current loop. Jump to addrBrk to break out of a loop. + ** Jump to cont to go immediately to the next iteration of the + ** loop. + ** + ** When there is an IN operator, we also have a "addrNxt" label that + ** means to continue with the next IN value combination. When + ** there are no IN operators in the constraints, the "addrNxt" label + ** is the same as "addrBrk". + */ + addrBrk = pLevel->addrBrk = pLevel->addrNxt = sqlite3VdbeMakeLabel(v); + addrCont = pLevel->addrCont = sqlite3VdbeMakeLabel(v); + + /* If this is the right table of a LEFT OUTER JOIN, allocate and + ** initialize a memory cell that records if this table matches any + ** row of the left table of the join. + */ + if( pLevel->iFrom>0 && (pTabItem[0].fg.jointype & JT_LEFT)!=0 ){ + pLevel->iLeftJoin = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 0, pLevel->iLeftJoin); + VdbeComment((v, "init LEFT JOIN no-match flag")); + } + + /* Special case of a FROM clause subquery implemented as a co-routine */ + if( pTabItem->fg.viaCoroutine ){ + int regYield = pTabItem->regReturn; + sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); + pLevel->p2 = sqlite3VdbeAddOp2(v, OP_Yield, regYield, addrBrk); + VdbeCoverage(v); + VdbeComment((v, "next row of \"%s\"", pTabItem->pTab->zName)); + pLevel->op = OP_Goto; + }else + +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)!=0 ){ + /* Case 1: The table is a virtual-table. Use the VFilter and VNext + ** to access the data. + */ + int iReg; /* P3 Value for OP_VFilter */ + int addrNotFound; + int nConstraint = pLoop->nLTerm; + int iIn; /* Counter for IN constraints */ + + sqlite3ExprCachePush(pParse); + iReg = sqlite3GetTempRange(pParse, nConstraint+2); + addrNotFound = pLevel->addrBrk; + for(j=0; jaLTerm[j]; + if( NEVER(pTerm==0) ) continue; + if( pTerm->eOperator & WO_IN ){ + codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget); + addrNotFound = pLevel->addrNxt; + }else{ + Expr *pRight = pTerm->pExpr->pRight; + codeExprOrVector(pParse, pRight, iTarget, 1); + } + } + sqlite3VdbeAddOp2(v, OP_Integer, pLoop->u.vtab.idxNum, iReg); + sqlite3VdbeAddOp2(v, OP_Integer, nConstraint, iReg+1); + sqlite3VdbeAddOp4(v, OP_VFilter, iCur, addrNotFound, iReg, + pLoop->u.vtab.idxStr, + pLoop->u.vtab.needFree ? P4_DYNAMIC : P4_STATIC); + VdbeCoverage(v); + pLoop->u.vtab.needFree = 0; + pLevel->p1 = iCur; + pLevel->op = pWInfo->eOnePass ? OP_Noop : OP_VNext; + pLevel->p2 = sqlite3VdbeCurrentAddr(v); + iIn = pLevel->u.in.nIn; + for(j=nConstraint-1; j>=0; j--){ + pTerm = pLoop->aLTerm[j]; + if( j<16 && (pLoop->u.vtab.omitMask>>j)&1 ){ + disableTerm(pLevel, pTerm); + }else if( (pTerm->eOperator & WO_IN)!=0 ){ + Expr *pCompare; /* The comparison operator */ + Expr *pRight; /* RHS of the comparison */ + VdbeOp *pOp; /* Opcode to access the value of the IN constraint */ + + /* Reload the constraint value into reg[iReg+j+2]. The same value + ** was loaded into the same register prior to the OP_VFilter, but + ** the xFilter implementation might have changed the datatype or + ** encoding of the value in the register, so it *must* be reloaded. */ + assert( pLevel->u.in.aInLoop!=0 || db->mallocFailed ); + if( !db->mallocFailed ){ + assert( iIn>0 ); + pOp = sqlite3VdbeGetOp(v, pLevel->u.in.aInLoop[--iIn].addrInTop); + assert( pOp->opcode==OP_Column || pOp->opcode==OP_Rowid ); + assert( pOp->opcode!=OP_Column || pOp->p3==iReg+j+2 ); + assert( pOp->opcode!=OP_Rowid || pOp->p2==iReg+j+2 ); + testcase( pOp->opcode==OP_Rowid ); + sqlite3VdbeAddOp3(v, pOp->opcode, pOp->p1, pOp->p2, pOp->p3); + } + + /* Generate code that will continue to the next row if + ** the IN constraint is not satisfied */ + pCompare = sqlite3PExpr(pParse, TK_EQ, 0, 0); + assert( pCompare!=0 || db->mallocFailed ); + if( pCompare ){ + pCompare->pLeft = pTerm->pExpr->pLeft; + pCompare->pRight = pRight = sqlite3Expr(db, TK_REGISTER, 0); + if( pRight ){ + pRight->iTable = iReg+j+2; + sqlite3ExprIfFalse(pParse, pCompare, pLevel->addrCont, 0); + } + pCompare->pLeft = 0; + sqlite3ExprDelete(db, pCompare); + } + } + } + /* These registers need to be preserved in case there is an IN operator + ** loop. So we could deallocate the registers here (and potentially + ** reuse them later) if (pLoop->wsFlags & WHERE_IN_ABLE)==0. But it seems + ** simpler and safer to simply not reuse the registers. + ** + ** sqlite3ReleaseTempRange(pParse, iReg, nConstraint+2); + */ + sqlite3ExprCachePop(pParse); + }else +#endif /* SQLITE_OMIT_VIRTUALTABLE */ + + if( (pLoop->wsFlags & WHERE_IPK)!=0 + && (pLoop->wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_EQ))!=0 + ){ + /* Case 2: We can directly reference a single row using an + ** equality comparison against the ROWID field. Or + ** we reference multiple rows using a "rowid IN (...)" + ** construct. + */ + assert( pLoop->u.btree.nEq==1 ); + pTerm = pLoop->aLTerm[0]; + assert( pTerm!=0 ); + assert( pTerm->pExpr!=0 ); + assert( omitTable==0 ); + testcase( pTerm->wtFlags & TERM_VIRTUAL ); + iReleaseReg = ++pParse->nMem; + iRowidReg = codeEqualityTerm(pParse, pTerm, pLevel, 0, bRev, iReleaseReg); + if( iRowidReg!=iReleaseReg ) sqlite3ReleaseTempReg(pParse, iReleaseReg); + addrNxt = pLevel->addrNxt; + sqlite3VdbeAddOp3(v, OP_SeekRowid, iCur, addrNxt, iRowidReg); + VdbeCoverage(v); + sqlite3ExprCacheAffinityChange(pParse, iRowidReg, 1); + sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); + VdbeComment((v, "pk")); + pLevel->op = OP_Noop; + }else if( (pLoop->wsFlags & WHERE_IPK)!=0 + && (pLoop->wsFlags & WHERE_COLUMN_RANGE)!=0 + ){ + /* Case 3: We have an inequality comparison against the ROWID field. + */ + int testOp = OP_Noop; + int start; + int memEndValue = 0; + WhereTerm *pStart, *pEnd; + + assert( omitTable==0 ); + j = 0; + pStart = pEnd = 0; + if( pLoop->wsFlags & WHERE_BTM_LIMIT ) pStart = pLoop->aLTerm[j++]; + if( pLoop->wsFlags & WHERE_TOP_LIMIT ) pEnd = pLoop->aLTerm[j++]; + assert( pStart!=0 || pEnd!=0 ); + if( bRev ){ + pTerm = pStart; + pStart = pEnd; + pEnd = pTerm; + } + codeCursorHint(pTabItem, pWInfo, pLevel, pEnd); + if( pStart ){ + Expr *pX; /* The expression that defines the start bound */ + int r1, rTemp; /* Registers for holding the start boundary */ + int op; /* Cursor seek operation */ + + /* The following constant maps TK_xx codes into corresponding + ** seek opcodes. It depends on a particular ordering of TK_xx + */ + const u8 aMoveOp[] = { + /* TK_GT */ OP_SeekGT, + /* TK_LE */ OP_SeekLE, + /* TK_LT */ OP_SeekLT, + /* TK_GE */ OP_SeekGE + }; + assert( TK_LE==TK_GT+1 ); /* Make sure the ordering.. */ + assert( TK_LT==TK_GT+2 ); /* ... of the TK_xx values... */ + assert( TK_GE==TK_GT+3 ); /* ... is correcct. */ + + assert( (pStart->wtFlags & TERM_VNULL)==0 ); + testcase( pStart->wtFlags & TERM_VIRTUAL ); + pX = pStart->pExpr; + assert( pX!=0 ); + testcase( pStart->leftCursor!=iCur ); /* transitive constraints */ + if( sqlite3ExprIsVector(pX->pRight) ){ + r1 = rTemp = sqlite3GetTempReg(pParse); + codeExprOrVector(pParse, pX->pRight, r1, 1); + op = aMoveOp[(pX->op - TK_GT) | 0x0001]; + }else{ + r1 = sqlite3ExprCodeTemp(pParse, pX->pRight, &rTemp); + disableTerm(pLevel, pStart); + op = aMoveOp[(pX->op - TK_GT)]; + } + sqlite3VdbeAddOp3(v, op, iCur, addrBrk, r1); + VdbeComment((v, "pk")); + VdbeCoverageIf(v, pX->op==TK_GT); + VdbeCoverageIf(v, pX->op==TK_LE); + VdbeCoverageIf(v, pX->op==TK_LT); + VdbeCoverageIf(v, pX->op==TK_GE); + sqlite3ExprCacheAffinityChange(pParse, r1, 1); + sqlite3ReleaseTempReg(pParse, rTemp); + }else{ + sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iCur, addrBrk); + VdbeCoverageIf(v, bRev==0); + VdbeCoverageIf(v, bRev!=0); + } + if( pEnd ){ + Expr *pX; + pX = pEnd->pExpr; + assert( pX!=0 ); + assert( (pEnd->wtFlags & TERM_VNULL)==0 ); + testcase( pEnd->leftCursor!=iCur ); /* Transitive constraints */ + testcase( pEnd->wtFlags & TERM_VIRTUAL ); + memEndValue = ++pParse->nMem; + codeExprOrVector(pParse, pX->pRight, memEndValue, 1); + if( 0==sqlite3ExprIsVector(pX->pRight) + && (pX->op==TK_LT || pX->op==TK_GT) + ){ + testOp = bRev ? OP_Le : OP_Ge; + }else{ + testOp = bRev ? OP_Lt : OP_Gt; + } + if( 0==sqlite3ExprIsVector(pX->pRight) ){ + disableTerm(pLevel, pEnd); + } + } + start = sqlite3VdbeCurrentAddr(v); + pLevel->op = bRev ? OP_Prev : OP_Next; + pLevel->p1 = iCur; + pLevel->p2 = start; + assert( pLevel->p5==0 ); + if( testOp!=OP_Noop ){ + iRowidReg = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Rowid, iCur, iRowidReg); + sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); + sqlite3VdbeAddOp3(v, testOp, memEndValue, addrBrk, iRowidReg); + VdbeCoverageIf(v, testOp==OP_Le); + VdbeCoverageIf(v, testOp==OP_Lt); + VdbeCoverageIf(v, testOp==OP_Ge); + VdbeCoverageIf(v, testOp==OP_Gt); + sqlite3VdbeChangeP5(v, SQLITE_AFF_NUMERIC | SQLITE_JUMPIFNULL); + } + }else if( pLoop->wsFlags & WHERE_INDEXED ){ + /* Case 4: A scan using an index. + ** + ** The WHERE clause may contain zero or more equality + ** terms ("==" or "IN" operators) that refer to the N + ** left-most columns of the index. It may also contain + ** inequality constraints (>, <, >= or <=) on the indexed + ** column that immediately follows the N equalities. Only + ** the right-most column can be an inequality - the rest must + ** use the "==" and "IN" operators. For example, if the + ** index is on (x,y,z), then the following clauses are all + ** optimized: + ** + ** x=5 + ** x=5 AND y=10 + ** x=5 AND y<10 + ** x=5 AND y>5 AND y<10 + ** x=5 AND y=5 AND z<=10 + ** + ** The z<10 term of the following cannot be used, only + ** the x=5 term: + ** + ** x=5 AND z<10 + ** + ** N may be zero if there are inequality constraints. + ** If there are no inequality constraints, then N is at + ** least one. + ** + ** This case is also used when there are no WHERE clause + ** constraints but an index is selected anyway, in order + ** to force the output order to conform to an ORDER BY. + */ + static const u8 aStartOp[] = { + 0, + 0, + OP_Rewind, /* 2: (!start_constraints && startEq && !bRev) */ + OP_Last, /* 3: (!start_constraints && startEq && bRev) */ + OP_SeekGT, /* 4: (start_constraints && !startEq && !bRev) */ + OP_SeekLT, /* 5: (start_constraints && !startEq && bRev) */ + OP_SeekGE, /* 6: (start_constraints && startEq && !bRev) */ + OP_SeekLE /* 7: (start_constraints && startEq && bRev) */ + }; + static const u8 aEndOp[] = { + OP_IdxGE, /* 0: (end_constraints && !bRev && !endEq) */ + OP_IdxGT, /* 1: (end_constraints && !bRev && endEq) */ + OP_IdxLE, /* 2: (end_constraints && bRev && !endEq) */ + OP_IdxLT, /* 3: (end_constraints && bRev && endEq) */ + }; + u16 nEq = pLoop->u.btree.nEq; /* Number of == or IN terms */ + u16 nBtm = pLoop->u.btree.nBtm; /* Length of BTM vector */ + u16 nTop = pLoop->u.btree.nTop; /* Length of TOP vector */ + int regBase; /* Base register holding constraint values */ + WhereTerm *pRangeStart = 0; /* Inequality constraint at range start */ + WhereTerm *pRangeEnd = 0; /* Inequality constraint at range end */ + int startEq; /* True if range start uses ==, >= or <= */ + int endEq; /* True if range end uses ==, >= or <= */ + int start_constraints; /* Start of range is constrained */ + int nConstraint; /* Number of constraint terms */ + Index *pIdx; /* The index we will be using */ + int iIdxCur; /* The VDBE cursor for the index */ + int nExtraReg = 0; /* Number of extra registers needed */ + int op; /* Instruction opcode */ + char *zStartAff; /* Affinity for start of range constraint */ + char *zEndAff = 0; /* Affinity for end of range constraint */ + u8 bSeekPastNull = 0; /* True to seek past initial nulls */ + u8 bStopAtNull = 0; /* Add condition to terminate at NULLs */ + + pIdx = pLoop->u.btree.pIndex; + iIdxCur = pLevel->iIdxCur; + assert( nEq>=pLoop->nSkip ); + + /* If this loop satisfies a sort order (pOrderBy) request that + ** was passed to this function to implement a "SELECT min(x) ..." + ** query, then the caller will only allow the loop to run for + ** a single iteration. This means that the first row returned + ** should not have a NULL value stored in 'x'. If column 'x' is + ** the first one after the nEq equality constraints in the index, + ** this requires some special handling. + */ + assert( pWInfo->pOrderBy==0 + || pWInfo->pOrderBy->nExpr==1 + || (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0 ); + if( (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)!=0 + && pWInfo->nOBSat>0 + && (pIdx->nKeyCol>nEq) + ){ + assert( pLoop->nSkip==0 ); + bSeekPastNull = 1; + nExtraReg = 1; + } + + /* Find any inequality constraint terms for the start and end + ** of the range. + */ + j = nEq; + if( pLoop->wsFlags & WHERE_BTM_LIMIT ){ + pRangeStart = pLoop->aLTerm[j++]; + nExtraReg = MAX(nExtraReg, pLoop->u.btree.nBtm); + /* Like optimization range constraints always occur in pairs */ + assert( (pRangeStart->wtFlags & TERM_LIKEOPT)==0 || + (pLoop->wsFlags & WHERE_TOP_LIMIT)!=0 ); + } + if( pLoop->wsFlags & WHERE_TOP_LIMIT ){ + pRangeEnd = pLoop->aLTerm[j++]; + nExtraReg = MAX(nExtraReg, pLoop->u.btree.nTop); +#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS + if( (pRangeEnd->wtFlags & TERM_LIKEOPT)!=0 ){ + assert( pRangeStart!=0 ); /* LIKE opt constraints */ + assert( pRangeStart->wtFlags & TERM_LIKEOPT ); /* occur in pairs */ + pLevel->iLikeRepCntr = (u32)++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Integer, 1, (int)pLevel->iLikeRepCntr); + VdbeComment((v, "LIKE loop counter")); + pLevel->addrLikeRep = sqlite3VdbeCurrentAddr(v); + /* iLikeRepCntr actually stores 2x the counter register number. The + ** bottom bit indicates whether the search order is ASC or DESC. */ + testcase( bRev ); + testcase( pIdx->aSortOrder[nEq]==SQLITE_SO_DESC ); + assert( (bRev & ~1)==0 ); + pLevel->iLikeRepCntr <<=1; + pLevel->iLikeRepCntr |= bRev ^ (pIdx->aSortOrder[nEq]==SQLITE_SO_DESC); + } +#endif + if( pRangeStart==0 ){ + j = pIdx->aiColumn[nEq]; + if( (j>=0 && pIdx->pTable->aCol[j].notNull==0) || j==XN_EXPR ){ + bSeekPastNull = 1; + } + } + } + assert( pRangeEnd==0 || (pRangeEnd->wtFlags & TERM_VNULL)==0 ); + + /* If we are doing a reverse order scan on an ascending index, or + ** a forward order scan on a descending index, interchange the + ** start and end terms (pRangeStart and pRangeEnd). + */ + if( (nEqnKeyCol && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC)) + || (bRev && pIdx->nKeyCol==nEq) + ){ + SWAP(WhereTerm *, pRangeEnd, pRangeStart); + SWAP(u8, bSeekPastNull, bStopAtNull); + SWAP(u8, nBtm, nTop); + } + + /* Generate code to evaluate all constraint terms using == or IN + ** and store the values of those terms in an array of registers + ** starting at regBase. + */ + codeCursorHint(pTabItem, pWInfo, pLevel, pRangeEnd); + regBase = codeAllEqualityTerms(pParse,pLevel,bRev,nExtraReg,&zStartAff); + assert( zStartAff==0 || sqlite3Strlen30(zStartAff)>=nEq ); + if( zStartAff && nTop ){ + zEndAff = sqlite3DbStrDup(db, &zStartAff[nEq]); + } + addrNxt = pLevel->addrNxt; + + testcase( pRangeStart && (pRangeStart->eOperator & WO_LE)!=0 ); + testcase( pRangeStart && (pRangeStart->eOperator & WO_GE)!=0 ); + testcase( pRangeEnd && (pRangeEnd->eOperator & WO_LE)!=0 ); + testcase( pRangeEnd && (pRangeEnd->eOperator & WO_GE)!=0 ); + startEq = !pRangeStart || pRangeStart->eOperator & (WO_LE|WO_GE); + endEq = !pRangeEnd || pRangeEnd->eOperator & (WO_LE|WO_GE); + start_constraints = pRangeStart || nEq>0; + + /* Seek the index cursor to the start of the range. */ + nConstraint = nEq; + if( pRangeStart ){ + Expr *pRight = pRangeStart->pExpr->pRight; + codeExprOrVector(pParse, pRight, regBase+nEq, nBtm); + whereLikeOptimizationStringFixup(v, pLevel, pRangeStart); + if( (pRangeStart->wtFlags & TERM_VNULL)==0 + && sqlite3ExprCanBeNull(pRight) + ){ + sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt); + VdbeCoverage(v); + } + if( zStartAff ){ + updateRangeAffinityStr(pRight, nBtm, &zStartAff[nEq]); + } + nConstraint += nBtm; + testcase( pRangeStart->wtFlags & TERM_VIRTUAL ); + if( sqlite3ExprIsVector(pRight)==0 ){ + disableTerm(pLevel, pRangeStart); + }else{ + startEq = 1; + } + bSeekPastNull = 0; + }else if( bSeekPastNull ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); + nConstraint++; + startEq = 0; + start_constraints = 1; + } + codeApplyAffinity(pParse, regBase, nConstraint - bSeekPastNull, zStartAff); + if( pLoop->nSkip>0 && nConstraint==pLoop->nSkip ){ + /* The skip-scan logic inside the call to codeAllEqualityConstraints() + ** above has already left the cursor sitting on the correct row, + ** so no further seeking is needed */ + }else{ + op = aStartOp[(start_constraints<<2) + (startEq<<1) + bRev]; + assert( op!=0 ); + sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); + VdbeCoverage(v); + VdbeCoverageIf(v, op==OP_Rewind); testcase( op==OP_Rewind ); + VdbeCoverageIf(v, op==OP_Last); testcase( op==OP_Last ); + VdbeCoverageIf(v, op==OP_SeekGT); testcase( op==OP_SeekGT ); + VdbeCoverageIf(v, op==OP_SeekGE); testcase( op==OP_SeekGE ); + VdbeCoverageIf(v, op==OP_SeekLE); testcase( op==OP_SeekLE ); + VdbeCoverageIf(v, op==OP_SeekLT); testcase( op==OP_SeekLT ); + } + + /* Load the value for the inequality constraint at the end of the + ** range (if any). + */ + nConstraint = nEq; + if( pRangeEnd ){ + Expr *pRight = pRangeEnd->pExpr->pRight; + sqlite3ExprCacheRemove(pParse, regBase+nEq, 1); + codeExprOrVector(pParse, pRight, regBase+nEq, nTop); + whereLikeOptimizationStringFixup(v, pLevel, pRangeEnd); + if( (pRangeEnd->wtFlags & TERM_VNULL)==0 + && sqlite3ExprCanBeNull(pRight) + ){ + sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt); + VdbeCoverage(v); + } + if( zEndAff ){ + updateRangeAffinityStr(pRight, nTop, zEndAff); + codeApplyAffinity(pParse, regBase+nEq, nTop, zEndAff); + }else{ + assert( pParse->db->mallocFailed ); + } + nConstraint += nTop; + testcase( pRangeEnd->wtFlags & TERM_VIRTUAL ); + + if( sqlite3ExprIsVector(pRight)==0 ){ + disableTerm(pLevel, pRangeEnd); + }else{ + endEq = 1; + } + }else if( bStopAtNull ){ + sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); + endEq = 0; + nConstraint++; + } + sqlite3DbFree(db, zStartAff); + sqlite3DbFree(db, zEndAff); + + /* Top of the loop body */ + pLevel->p2 = sqlite3VdbeCurrentAddr(v); + + /* Check if the index cursor is past the end of the range. */ + if( nConstraint ){ + op = aEndOp[bRev*2 + endEq]; + sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); + testcase( op==OP_IdxGT ); VdbeCoverageIf(v, op==OP_IdxGT ); + testcase( op==OP_IdxGE ); VdbeCoverageIf(v, op==OP_IdxGE ); + testcase( op==OP_IdxLT ); VdbeCoverageIf(v, op==OP_IdxLT ); + testcase( op==OP_IdxLE ); VdbeCoverageIf(v, op==OP_IdxLE ); + } + + /* Seek the table cursor, if required */ + if( omitTable ){ + /* pIdx is a covering index. No need to access the main table. */ + }else if( HasRowid(pIdx->pTable) ){ + if( (pWInfo->wctrlFlags & WHERE_SEEK_TABLE) || ( + (pWInfo->wctrlFlags & WHERE_SEEK_UNIQ_TABLE) + && (pWInfo->eOnePass==ONEPASS_SINGLE) + )){ + iRowidReg = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg); + sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); + sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, iRowidReg); + VdbeCoverage(v); + }else{ + codeDeferredSeek(pWInfo, pIdx, iCur, iIdxCur); + } + }else if( iCur!=iIdxCur ){ + Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable); + iRowidReg = sqlite3GetTempRange(pParse, pPk->nKeyCol); + for(j=0; jnKeyCol; j++){ + k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); + sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, iRowidReg+j); + } + sqlite3VdbeAddOp4Int(v, OP_NotFound, iCur, addrCont, + iRowidReg, pPk->nKeyCol); VdbeCoverage(v); + } + + /* Record the instruction used to terminate the loop. */ + if( pLoop->wsFlags & WHERE_ONEROW ){ + pLevel->op = OP_Noop; + }else if( bRev ){ + pLevel->op = OP_Prev; + }else{ + pLevel->op = OP_Next; + } + pLevel->p1 = iIdxCur; + pLevel->p3 = (pLoop->wsFlags&WHERE_UNQ_WANTED)!=0 ? 1:0; + if( (pLoop->wsFlags & WHERE_CONSTRAINT)==0 ){ + pLevel->p5 = SQLITE_STMTSTATUS_FULLSCAN_STEP; + }else{ + assert( pLevel->p5==0 ); + } + }else + +#ifndef SQLITE_OMIT_OR_OPTIMIZATION + if( pLoop->wsFlags & WHERE_MULTI_OR ){ + /* Case 5: Two or more separately indexed terms connected by OR + ** + ** Example: + ** + ** CREATE TABLE t1(a,b,c,d); + ** CREATE INDEX i1 ON t1(a); + ** CREATE INDEX i2 ON t1(b); + ** CREATE INDEX i3 ON t1(c); + ** + ** SELECT * FROM t1 WHERE a=5 OR b=7 OR (c=11 AND d=13) + ** + ** In the example, there are three indexed terms connected by OR. + ** The top of the loop looks like this: + ** + ** Null 1 # Zero the rowset in reg 1 + ** + ** Then, for each indexed term, the following. The arguments to + ** RowSetTest are such that the rowid of the current row is inserted + ** into the RowSet. If it is already present, control skips the + ** Gosub opcode and jumps straight to the code generated by WhereEnd(). + ** + ** sqlite3WhereBegin() + ** RowSetTest # Insert rowid into rowset + ** Gosub 2 A + ** sqlite3WhereEnd() + ** + ** Following the above, code to terminate the loop. Label A, the target + ** of the Gosub above, jumps to the instruction right after the Goto. + ** + ** Null 1 # Zero the rowset in reg 1 + ** Goto B # The loop is finished. + ** + ** A: # Return data, whatever. + ** + ** Return 2 # Jump back to the Gosub + ** + ** B: + ** + ** Added 2014-05-26: If the table is a WITHOUT ROWID table, then + ** use an ephemeral index instead of a RowSet to record the primary + ** keys of the rows we have already seen. + ** + */ + WhereClause *pOrWc; /* The OR-clause broken out into subterms */ + SrcList *pOrTab; /* Shortened table list or OR-clause generation */ + Index *pCov = 0; /* Potential covering index (or NULL) */ + int iCovCur = pParse->nTab++; /* Cursor used for index scans (if any) */ + + int regReturn = ++pParse->nMem; /* Register used with OP_Gosub */ + int regRowset = 0; /* Register for RowSet object */ + int regRowid = 0; /* Register holding rowid */ + int iLoopBody = sqlite3VdbeMakeLabel(v); /* Start of loop body */ + int iRetInit; /* Address of regReturn init */ + int untestedTerms = 0; /* Some terms not completely tested */ + int ii; /* Loop counter */ + u16 wctrlFlags; /* Flags for sub-WHERE clause */ + Expr *pAndExpr = 0; /* An ".. AND (...)" expression */ + Table *pTab = pTabItem->pTab; + + pTerm = pLoop->aLTerm[0]; + assert( pTerm!=0 ); + assert( pTerm->eOperator & WO_OR ); + assert( (pTerm->wtFlags & TERM_ORINFO)!=0 ); + pOrWc = &pTerm->u.pOrInfo->wc; + pLevel->op = OP_Return; + pLevel->p1 = regReturn; + + /* Set up a new SrcList in pOrTab containing the table being scanned + ** by this loop in the a[0] slot and all notReady tables in a[1..] slots. + ** This becomes the SrcList in the recursive call to sqlite3WhereBegin(). + */ + if( pWInfo->nLevel>1 ){ + int nNotReady; /* The number of notReady tables */ + struct SrcList_item *origSrc; /* Original list of tables */ + nNotReady = pWInfo->nLevel - iLevel - 1; + pOrTab = sqlite3StackAllocRaw(db, + sizeof(*pOrTab)+ nNotReady*sizeof(pOrTab->a[0])); + if( pOrTab==0 ) return notReady; + pOrTab->nAlloc = (u8)(nNotReady + 1); + pOrTab->nSrc = pOrTab->nAlloc; + memcpy(pOrTab->a, pTabItem, sizeof(*pTabItem)); + origSrc = pWInfo->pTabList->a; + for(k=1; k<=nNotReady; k++){ + memcpy(&pOrTab->a[k], &origSrc[pLevel[k].iFrom], sizeof(pOrTab->a[k])); + } + }else{ + pOrTab = pWInfo->pTabList; + } + + /* Initialize the rowset register to contain NULL. An SQL NULL is + ** equivalent to an empty rowset. Or, create an ephemeral index + ** capable of holding primary keys in the case of a WITHOUT ROWID. + ** + ** Also initialize regReturn to contain the address of the instruction + ** immediately following the OP_Return at the bottom of the loop. This + ** is required in a few obscure LEFT JOIN cases where control jumps + ** over the top of the loop into the body of it. In this case the + ** correct response for the end-of-loop code (the OP_Return) is to + ** fall through to the next instruction, just as an OP_Next does if + ** called on an uninitialized cursor. + */ + if( (pWInfo->wctrlFlags & WHERE_DUPLICATES_OK)==0 ){ + if( HasRowid(pTab) ){ + regRowset = ++pParse->nMem; + sqlite3VdbeAddOp2(v, OP_Null, 0, regRowset); + }else{ + Index *pPk = sqlite3PrimaryKeyIndex(pTab); + regRowset = pParse->nTab++; + sqlite3VdbeAddOp2(v, OP_OpenEphemeral, regRowset, pPk->nKeyCol); + sqlite3VdbeSetP4KeyInfo(pParse, pPk); + } + regRowid = ++pParse->nMem; + } + iRetInit = sqlite3VdbeAddOp2(v, OP_Integer, 0, regReturn); + + /* If the original WHERE clause is z of the form: (x1 OR x2 OR ...) AND y + ** Then for every term xN, evaluate as the subexpression: xN AND z + ** That way, terms in y that are factored into the disjunction will + ** be picked up by the recursive calls to sqlite3WhereBegin() below. + ** + ** Actually, each subexpression is converted to "xN AND w" where w is + ** the "interesting" terms of z - terms that did not originate in the + ** ON or USING clause of a LEFT JOIN, and terms that are usable as + ** indices. + ** + ** This optimization also only applies if the (x1 OR x2 OR ...) term + ** is not contained in the ON clause of a LEFT JOIN. + ** See ticket http://www.sqlite.org/src/info/f2369304e4 + */ + if( pWC->nTerm>1 ){ + int iTerm; + for(iTerm=0; iTermnTerm; iTerm++){ + Expr *pExpr = pWC->a[iTerm].pExpr; + if( &pWC->a[iTerm] == pTerm ) continue; + if( ExprHasProperty(pExpr, EP_FromJoin) ) continue; + testcase( pWC->a[iTerm].wtFlags & TERM_VIRTUAL ); + testcase( pWC->a[iTerm].wtFlags & TERM_CODED ); + if( (pWC->a[iTerm].wtFlags & (TERM_VIRTUAL|TERM_CODED))!=0 ) continue; + if( (pWC->a[iTerm].eOperator & WO_ALL)==0 ) continue; + testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO ); + pExpr = sqlite3ExprDup(db, pExpr, 0); + pAndExpr = sqlite3ExprAnd(db, pAndExpr, pExpr); + } + if( pAndExpr ){ + pAndExpr = sqlite3PExpr(pParse, TK_AND|TKFLG_DONTFOLD, 0, pAndExpr); + } + } + + /* Run a separate WHERE clause for each term of the OR clause. After + ** eliminating duplicates from other WHERE clauses, the action for each + ** sub-WHERE clause is to to invoke the main loop body as a subroutine. + */ + wctrlFlags = WHERE_OR_SUBCLAUSE | (pWInfo->wctrlFlags & WHERE_SEEK_TABLE); + for(ii=0; iinTerm; ii++){ + WhereTerm *pOrTerm = &pOrWc->a[ii]; + if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){ + WhereInfo *pSubWInfo; /* Info for single OR-term scan */ + Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */ + int jmp1 = 0; /* Address of jump operation */ + if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){ + pAndExpr->pLeft = pOrExpr; + pOrExpr = pAndExpr; + } + /* Loop through table entries that match term pOrTerm. */ + WHERETRACE(0xffff, ("Subplan for OR-clause:\n")); + pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0, + wctrlFlags, iCovCur); + assert( pSubWInfo || pParse->nErr || db->mallocFailed ); + if( pSubWInfo ){ + WhereLoop *pSubLoop; + int addrExplain = sqlite3WhereExplainOneScan( + pParse, pOrTab, &pSubWInfo->a[0], iLevel, pLevel->iFrom, 0 + ); + sqlite3WhereAddScanStatus(v, pOrTab, &pSubWInfo->a[0], addrExplain); + + /* This is the sub-WHERE clause body. First skip over + ** duplicate rows from prior sub-WHERE clauses, and record the + ** rowid (or PRIMARY KEY) for the current row so that the same + ** row will be skipped in subsequent sub-WHERE clauses. + */ + if( (pWInfo->wctrlFlags & WHERE_DUPLICATES_OK)==0 ){ + int r; + int iSet = ((ii==pOrWc->nTerm-1)?-1:ii); + if( HasRowid(pTab) ){ + r = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, regRowid, 0); + jmp1 = sqlite3VdbeAddOp4Int(v, OP_RowSetTest, regRowset, 0, + r,iSet); + VdbeCoverage(v); + }else{ + Index *pPk = sqlite3PrimaryKeyIndex(pTab); + int nPk = pPk->nKeyCol; + int iPk; + + /* Read the PK into an array of temp registers. */ + r = sqlite3GetTempRange(pParse, nPk); + for(iPk=0; iPkaiColumn[iPk]; + sqlite3ExprCodeGetColumnToReg(pParse, pTab, iCol, iCur, r+iPk); + } + + /* Check if the temp table already contains this key. If so, + ** the row has already been included in the result set and + ** can be ignored (by jumping past the Gosub below). Otherwise, + ** insert the key into the temp table and proceed with processing + ** the row. + ** + ** Use some of the same optimizations as OP_RowSetTest: If iSet + ** is zero, assume that the key cannot already be present in + ** the temp table. And if iSet is -1, assume that there is no + ** need to insert the key into the temp table, as it will never + ** be tested for. */ + if( iSet ){ + jmp1 = sqlite3VdbeAddOp4Int(v, OP_Found, regRowset, 0, r, nPk); + VdbeCoverage(v); + } + if( iSet>=0 ){ + sqlite3VdbeAddOp3(v, OP_MakeRecord, r, nPk, regRowid); + sqlite3VdbeAddOp4Int(v, OP_IdxInsert, regRowset, regRowid, + r, nPk); + if( iSet ) sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); + } + + /* Release the array of temp registers */ + sqlite3ReleaseTempRange(pParse, r, nPk); + } + } + + /* Invoke the main loop body as a subroutine */ + sqlite3VdbeAddOp2(v, OP_Gosub, regReturn, iLoopBody); + + /* Jump here (skipping the main loop body subroutine) if the + ** current sub-WHERE row is a duplicate from prior sub-WHEREs. */ + if( jmp1 ) sqlite3VdbeJumpHere(v, jmp1); + + /* The pSubWInfo->untestedTerms flag means that this OR term + ** contained one or more AND term from a notReady table. The + ** terms from the notReady table could not be tested and will + ** need to be tested later. + */ + if( pSubWInfo->untestedTerms ) untestedTerms = 1; + + /* If all of the OR-connected terms are optimized using the same + ** index, and the index is opened using the same cursor number + ** by each call to sqlite3WhereBegin() made by this loop, it may + ** be possible to use that index as a covering index. + ** + ** If the call to sqlite3WhereBegin() above resulted in a scan that + ** uses an index, and this is either the first OR-connected term + ** processed or the index is the same as that used by all previous + ** terms, set pCov to the candidate covering index. Otherwise, set + ** pCov to NULL to indicate that no candidate covering index will + ** be available. + */ + pSubLoop = pSubWInfo->a[0].pWLoop; + assert( (pSubLoop->wsFlags & WHERE_AUTO_INDEX)==0 ); + if( (pSubLoop->wsFlags & WHERE_INDEXED)!=0 + && (ii==0 || pSubLoop->u.btree.pIndex==pCov) + && (HasRowid(pTab) || !IsPrimaryKeyIndex(pSubLoop->u.btree.pIndex)) + ){ + assert( pSubWInfo->a[0].iIdxCur==iCovCur ); + pCov = pSubLoop->u.btree.pIndex; + }else{ + pCov = 0; + } + + /* Finish the loop through table entries that match term pOrTerm. */ + sqlite3WhereEnd(pSubWInfo); + } + } + } + pLevel->u.pCovidx = pCov; + if( pCov ) pLevel->iIdxCur = iCovCur; + if( pAndExpr ){ + pAndExpr->pLeft = 0; + sqlite3ExprDelete(db, pAndExpr); + } + sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v)); + sqlite3VdbeGoto(v, pLevel->addrBrk); + sqlite3VdbeResolveLabel(v, iLoopBody); + + if( pWInfo->nLevel>1 ) sqlite3StackFree(db, pOrTab); + if( !untestedTerms ) disableTerm(pLevel, pTerm); + }else +#endif /* SQLITE_OMIT_OR_OPTIMIZATION */ + + { + /* Case 6: There is no usable index. We must do a complete + ** scan of the entire table. + */ + static const u8 aStep[] = { OP_Next, OP_Prev }; + static const u8 aStart[] = { OP_Rewind, OP_Last }; + assert( bRev==0 || bRev==1 ); + if( pTabItem->fg.isRecursive ){ + /* Tables marked isRecursive have only a single row that is stored in + ** a pseudo-cursor. No need to Rewind or Next such cursors. */ + pLevel->op = OP_Noop; + }else{ + codeCursorHint(pTabItem, pWInfo, pLevel, 0); + pLevel->op = aStep[bRev]; + pLevel->p1 = iCur; + pLevel->p2 = 1 + sqlite3VdbeAddOp2(v, aStart[bRev], iCur, addrBrk); + VdbeCoverageIf(v, bRev==0); + VdbeCoverageIf(v, bRev!=0); + pLevel->p5 = SQLITE_STMTSTATUS_FULLSCAN_STEP; + } + } + +#ifdef SQLITE_ENABLE_STMT_SCANSTATUS + pLevel->addrVisit = sqlite3VdbeCurrentAddr(v); +#endif + + /* Insert code to test every subexpression that can be completely + ** computed using the current set of tables. + */ + for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){ + Expr *pE; + int skipLikeAddr = 0; + testcase( pTerm->wtFlags & TERM_VIRTUAL ); + testcase( pTerm->wtFlags & TERM_CODED ); + if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; + if( (pTerm->prereqAll & pLevel->notReady)!=0 ){ + testcase( pWInfo->untestedTerms==0 + && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)!=0 ); + pWInfo->untestedTerms = 1; + continue; + } + pE = pTerm->pExpr; + assert( pE!=0 ); + if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){ + continue; + } + if( pTerm->wtFlags & TERM_LIKECOND ){ + /* If the TERM_LIKECOND flag is set, that means that the range search + ** is sufficient to guarantee that the LIKE operator is true, so we + ** can skip the call to the like(A,B) function. But this only works + ** for strings. So do not skip the call to the function on the pass + ** that compares BLOBs. */ +#ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS + continue; +#else + u32 x = pLevel->iLikeRepCntr; + assert( x>0 ); + skipLikeAddr = sqlite3VdbeAddOp1(v, (x&1)? OP_IfNot : OP_If, (int)(x>>1)); + VdbeCoverage(v); +#endif + } + sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL); + if( skipLikeAddr ) sqlite3VdbeJumpHere(v, skipLikeAddr); + pTerm->wtFlags |= TERM_CODED; + } + + /* Insert code to test for implied constraints based on transitivity + ** of the "==" operator. + ** + ** Example: If the WHERE clause contains "t1.a=t2.b" and "t2.b=123" + ** and we are coding the t1 loop and the t2 loop has not yet coded, + ** then we cannot use the "t1.a=t2.b" constraint, but we can code + ** the implied "t1.a=123" constraint. + */ + for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){ + Expr *pE, sEAlt; + WhereTerm *pAlt; + if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; + if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) continue; + if( (pTerm->eOperator & WO_EQUIV)==0 ) continue; + if( pTerm->leftCursor!=iCur ) continue; + if( pLevel->iLeftJoin ) continue; + pE = pTerm->pExpr; + assert( !ExprHasProperty(pE, EP_FromJoin) ); + assert( (pTerm->prereqRight & pLevel->notReady)!=0 ); + pAlt = sqlite3WhereFindTerm(pWC, iCur, pTerm->u.leftColumn, notReady, + WO_EQ|WO_IN|WO_IS, 0); + if( pAlt==0 ) continue; + if( pAlt->wtFlags & (TERM_CODED) ) continue; + testcase( pAlt->eOperator & WO_EQ ); + testcase( pAlt->eOperator & WO_IS ); + testcase( pAlt->eOperator & WO_IN ); + VdbeModuleComment((v, "begin transitive constraint")); + sEAlt = *pAlt->pExpr; + sEAlt.pLeft = pE->pLeft; + sqlite3ExprIfFalse(pParse, &sEAlt, addrCont, SQLITE_JUMPIFNULL); + } + + /* For a LEFT OUTER JOIN, generate code that will record the fact that + ** at least one row of the right table has matched the left table. + */ + if( pLevel->iLeftJoin ){ + pLevel->addrFirst = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp2(v, OP_Integer, 1, pLevel->iLeftJoin); + VdbeComment((v, "record LEFT JOIN hit")); + sqlite3ExprCacheClear(pParse); + for(pTerm=pWC->a, j=0; jnTerm; j++, pTerm++){ + testcase( pTerm->wtFlags & TERM_VIRTUAL ); + testcase( pTerm->wtFlags & TERM_CODED ); + if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; + if( (pTerm->prereqAll & pLevel->notReady)!=0 ){ + assert( pWInfo->untestedTerms ); + continue; + } + assert( pTerm->pExpr ); + sqlite3ExprIfFalse(pParse, pTerm->pExpr, addrCont, SQLITE_JUMPIFNULL); + pTerm->wtFlags |= TERM_CODED; + } + } + + return pLevel->notReady; +} + +/************** End of wherecode.c *******************************************/ +/************** Begin file whereexpr.c ***************************************/ +/* +** 2015-06-08 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This module contains C code that generates VDBE code used to process +** the WHERE clause of SQL statements. +** +** This file was originally part of where.c but was split out to improve +** readability and editabiliity. This file contains utility routines for +** analyzing Expr objects in the WHERE clause. +*/ +/* #include "sqliteInt.h" */ +/* #include "whereInt.h" */ + +/* Forward declarations */ +static void exprAnalyze(SrcList*, WhereClause*, int); /* ** Deallocate all memory associated with a WhereOrInfo object. */ static void whereOrInfoDelete(sqlite3 *db, WhereOrInfo *p){ - whereClauseClear(&p->wc); + sqlite3WhereClauseClear(&p->wc); sqlite3DbFree(db, p); } @@ -109025,33 +127953,10 @@ static void whereOrInfoDelete(sqlite3 *db, WhereOrInfo *p){ ** Deallocate all memory associated with a WhereAndInfo object. */ static void whereAndInfoDelete(sqlite3 *db, WhereAndInfo *p){ - whereClauseClear(&p->wc); + sqlite3WhereClauseClear(&p->wc); sqlite3DbFree(db, p); } -/* -** Deallocate a WhereClause structure. The WhereClause structure -** itself is not freed. This routine is the inverse of whereClauseInit(). -*/ -static void whereClauseClear(WhereClause *pWC){ - int i; - WhereTerm *a; - sqlite3 *db = pWC->pWInfo->pParse->db; - for(i=pWC->nTerm-1, a=pWC->a; i>=0; i--, a++){ - if( a->wtFlags & TERM_DYNAMIC ){ - sqlite3ExprDelete(db, a->pExpr); - } - if( a->wtFlags & TERM_ORINFO ){ - whereOrInfoDelete(db, a->u.pOrInfo); - }else if( a->wtFlags & TERM_ANDINFO ){ - whereAndInfoDelete(db, a->u.pAndInfo); - } - } - if( pWC->a!=pWC->aStatic ){ - sqlite3DbFree(db, pWC->a); - } -} - /* ** Add a single new WhereTerm entry to the WhereClause object pWC. ** The new WhereTerm object is constructed from Expr p and with wtFlags. @@ -109071,14 +127976,14 @@ static void whereClauseClear(WhereClause *pWC){ ** calling this routine. Such pointers may be reinitialized by referencing ** the pWC->a[] array. */ -static int whereClauseInsert(WhereClause *pWC, Expr *p, u8 wtFlags){ +static int whereClauseInsert(WhereClause *pWC, Expr *p, u16 wtFlags){ WhereTerm *pTerm; int idx; testcase( wtFlags & TERM_VIRTUAL ); if( pWC->nTerm>=pWC->nSlot ){ WhereTerm *pOld = pWC->a; sqlite3 *db = pWC->pWInfo->pParse->db; - pWC->a = sqlite3DbMallocRaw(db, sizeof(pWC->a[0])*pWC->nSlot*2 ); + pWC->a = sqlite3DbMallocRawNN(db, sizeof(pWC->a[0])*pWC->nSlot*2 ); if( pWC->a==0 ){ if( wtFlags & TERM_DYNAMIC ){ sqlite3ExprDelete(db, p); @@ -109094,150 +127999,32 @@ static int whereClauseInsert(WhereClause *pWC, Expr *p, u8 wtFlags){ } pTerm = &pWC->a[idx = pWC->nTerm++]; if( p && ExprHasProperty(p, EP_Unlikely) ){ - pTerm->truthProb = sqlite3LogEst(p->iTable) - 99; + pTerm->truthProb = sqlite3LogEst(p->iTable) - 270; }else{ - pTerm->truthProb = -1; + pTerm->truthProb = 1; } pTerm->pExpr = sqlite3ExprSkipCollate(p); pTerm->wtFlags = wtFlags; pTerm->pWC = pWC; pTerm->iParent = -1; + memset(&pTerm->eOperator, 0, + sizeof(WhereTerm) - offsetof(WhereTerm,eOperator)); return idx; } -/* -** This routine identifies subexpressions in the WHERE clause where -** each subexpression is separated by the AND operator or some other -** operator specified in the op parameter. The WhereClause structure -** is filled with pointers to subexpressions. For example: -** -** WHERE a=='hello' AND coalesce(b,11)<10 AND (c+12!=d OR c==22) -** \________/ \_______________/ \________________/ -** slot[0] slot[1] slot[2] -** -** The original WHERE clause in pExpr is unaltered. All this routine -** does is make slot[] entries point to substructure within pExpr. -** -** In the previous sentence and in the diagram, "slot[]" refers to -** the WhereClause.a[] array. The slot[] array grows as needed to contain -** all terms of the WHERE clause. -*/ -static void whereSplit(WhereClause *pWC, Expr *pExpr, u8 op){ - pWC->op = op; - if( pExpr==0 ) return; - if( pExpr->op!=op ){ - whereClauseInsert(pWC, pExpr, 0); - }else{ - whereSplit(pWC, pExpr->pLeft, op); - whereSplit(pWC, pExpr->pRight, op); - } -} - -/* -** Initialize a WhereMaskSet object -*/ -#define initMaskSet(P) (P)->n=0 - -/* -** Return the bitmask for the given cursor number. Return 0 if -** iCursor is not in the set. -*/ -static Bitmask getMask(WhereMaskSet *pMaskSet, int iCursor){ - int i; - assert( pMaskSet->n<=(int)sizeof(Bitmask)*8 ); - for(i=0; in; i++){ - if( pMaskSet->ix[i]==iCursor ){ - return MASKBIT(i); - } - } - return 0; -} - -/* -** Create a new mask for cursor iCursor. -** -** There is one cursor per table in the FROM clause. The number of -** tables in the FROM clause is limited by a test early in the -** sqlite3WhereBegin() routine. So we know that the pMaskSet->ix[] -** array will never overflow. -*/ -static void createMask(WhereMaskSet *pMaskSet, int iCursor){ - assert( pMaskSet->n < ArraySize(pMaskSet->ix) ); - pMaskSet->ix[pMaskSet->n++] = iCursor; -} - -/* -** These routines walk (recursively) an expression tree and generate -** a bitmask indicating which tables are used in that expression -** tree. -*/ -static Bitmask exprListTableUsage(WhereMaskSet*, ExprList*); -static Bitmask exprSelectTableUsage(WhereMaskSet*, Select*); -static Bitmask exprTableUsage(WhereMaskSet *pMaskSet, Expr *p){ - Bitmask mask = 0; - if( p==0 ) return 0; - if( p->op==TK_COLUMN ){ - mask = getMask(pMaskSet, p->iTable); - return mask; - } - mask = exprTableUsage(pMaskSet, p->pRight); - mask |= exprTableUsage(pMaskSet, p->pLeft); - if( ExprHasProperty(p, EP_xIsSelect) ){ - mask |= exprSelectTableUsage(pMaskSet, p->x.pSelect); - }else{ - mask |= exprListTableUsage(pMaskSet, p->x.pList); - } - return mask; -} -static Bitmask exprListTableUsage(WhereMaskSet *pMaskSet, ExprList *pList){ - int i; - Bitmask mask = 0; - if( pList ){ - for(i=0; inExpr; i++){ - mask |= exprTableUsage(pMaskSet, pList->a[i].pExpr); - } - } - return mask; -} -static Bitmask exprSelectTableUsage(WhereMaskSet *pMaskSet, Select *pS){ - Bitmask mask = 0; - while( pS ){ - SrcList *pSrc = pS->pSrc; - mask |= exprListTableUsage(pMaskSet, pS->pEList); - mask |= exprListTableUsage(pMaskSet, pS->pGroupBy); - mask |= exprListTableUsage(pMaskSet, pS->pOrderBy); - mask |= exprTableUsage(pMaskSet, pS->pWhere); - mask |= exprTableUsage(pMaskSet, pS->pHaving); - if( ALWAYS(pSrc!=0) ){ - int i; - for(i=0; inSrc; i++){ - mask |= exprSelectTableUsage(pMaskSet, pSrc->a[i].pSelect); - mask |= exprTableUsage(pMaskSet, pSrc->a[i].pOn); - } - } - pS = pS->pPrior; - } - return mask; -} - /* ** Return TRUE if the given operator is one of the operators that is ** allowed for an indexable WHERE clause term. The allowed operators are -** "=", "<", ">", "<=", ">=", "IN", and "IS NULL" +** "=", "<", ">", "<=", ">=", "IN", "IS", and "IS NULL" */ static int allowedOp(int op){ assert( TK_GT>TK_EQ && TK_GTTK_EQ && TK_LTTK_EQ && TK_LE=TK_EQ && op<=TK_GE) || op==TK_ISNULL; + return op==TK_IN || (op>=TK_EQ && op<=TK_GE) || op==TK_ISNULL || op==TK_IS; } -/* -** Swap two objects of type TYPE. -*/ -#define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} - /* ** Commute a comparison operator. Expressions of the form "X op Y" ** are converted into "Y op X". @@ -109288,6 +128075,8 @@ static u16 operatorMask(int op){ c = WO_IN; }else if( op==TK_ISNULL ){ c = WO_ISNULL; + }else if( op==TK_IS ){ + c = WO_IS; }else{ assert( (WO_EQ<<(op-TK_EQ)) < 0x7fff ); c = (u16)(WO_EQ<<(op-TK_EQ)); @@ -109299,199 +128088,10 @@ static u16 operatorMask(int op){ assert( op!=TK_LE || c==WO_LE ); assert( op!=TK_GT || c==WO_GT ); assert( op!=TK_GE || c==WO_GE ); + assert( op!=TK_IS || c==WO_IS ); return c; } -/* -** Advance to the next WhereTerm that matches according to the criteria -** established when the pScan object was initialized by whereScanInit(). -** Return NULL if there are no more matching WhereTerms. -*/ -static WhereTerm *whereScanNext(WhereScan *pScan){ - int iCur; /* The cursor on the LHS of the term */ - int iColumn; /* The column on the LHS of the term. -1 for IPK */ - Expr *pX; /* An expression being tested */ - WhereClause *pWC; /* Shorthand for pScan->pWC */ - WhereTerm *pTerm; /* The term being tested */ - int k = pScan->k; /* Where to start scanning */ - - while( pScan->iEquiv<=pScan->nEquiv ){ - iCur = pScan->aEquiv[pScan->iEquiv-2]; - iColumn = pScan->aEquiv[pScan->iEquiv-1]; - while( (pWC = pScan->pWC)!=0 ){ - for(pTerm=pWC->a+k; knTerm; k++, pTerm++){ - if( pTerm->leftCursor==iCur - && pTerm->u.leftColumn==iColumn - && (pScan->iEquiv<=2 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin)) - ){ - if( (pTerm->eOperator & WO_EQUIV)!=0 - && pScan->nEquivaEquiv) - ){ - int j; - pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight); - assert( pX->op==TK_COLUMN ); - for(j=0; jnEquiv; j+=2){ - if( pScan->aEquiv[j]==pX->iTable - && pScan->aEquiv[j+1]==pX->iColumn ){ - break; - } - } - if( j==pScan->nEquiv ){ - pScan->aEquiv[j] = pX->iTable; - pScan->aEquiv[j+1] = pX->iColumn; - pScan->nEquiv += 2; - } - } - if( (pTerm->eOperator & pScan->opMask)!=0 ){ - /* Verify the affinity and collating sequence match */ - if( pScan->zCollName && (pTerm->eOperator & WO_ISNULL)==0 ){ - CollSeq *pColl; - Parse *pParse = pWC->pWInfo->pParse; - pX = pTerm->pExpr; - if( !sqlite3IndexAffinityOk(pX, pScan->idxaff) ){ - continue; - } - assert(pX->pLeft); - pColl = sqlite3BinaryCompareCollSeq(pParse, - pX->pLeft, pX->pRight); - if( pColl==0 ) pColl = pParse->db->pDfltColl; - if( sqlite3StrICmp(pColl->zName, pScan->zCollName) ){ - continue; - } - } - if( (pTerm->eOperator & WO_EQ)!=0 - && (pX = pTerm->pExpr->pRight)->op==TK_COLUMN - && pX->iTable==pScan->aEquiv[0] - && pX->iColumn==pScan->aEquiv[1] - ){ - continue; - } - pScan->k = k+1; - return pTerm; - } - } - } - pScan->pWC = pScan->pWC->pOuter; - k = 0; - } - pScan->pWC = pScan->pOrigWC; - k = 0; - pScan->iEquiv += 2; - } - return 0; -} - -/* -** Initialize a WHERE clause scanner object. Return a pointer to the -** first match. Return NULL if there are no matches. -** -** The scanner will be searching the WHERE clause pWC. It will look -** for terms of the form "X " where X is column iColumn of table -** iCur. The must be one of the operators described by opMask. -** -** If the search is for X and the WHERE clause contains terms of the -** form X=Y then this routine might also return terms of the form -** "Y ". The number of levels of transitivity is limited, -** but is enough to handle most commonly occurring SQL statements. -** -** If X is not the INTEGER PRIMARY KEY then X must be compatible with -** index pIdx. -*/ -static WhereTerm *whereScanInit( - WhereScan *pScan, /* The WhereScan object being initialized */ - WhereClause *pWC, /* The WHERE clause to be scanned */ - int iCur, /* Cursor to scan for */ - int iColumn, /* Column to scan for */ - u32 opMask, /* Operator(s) to scan for */ - Index *pIdx /* Must be compatible with this index */ -){ - int j; - - /* memset(pScan, 0, sizeof(*pScan)); */ - pScan->pOrigWC = pWC; - pScan->pWC = pWC; - if( pIdx && iColumn>=0 ){ - pScan->idxaff = pIdx->pTable->aCol[iColumn].affinity; - for(j=0; pIdx->aiColumn[j]!=iColumn; j++){ - if( NEVER(j>=pIdx->nKeyCol) ) return 0; - } - pScan->zCollName = pIdx->azColl[j]; - }else{ - pScan->idxaff = 0; - pScan->zCollName = 0; - } - pScan->opMask = opMask; - pScan->k = 0; - pScan->aEquiv[0] = iCur; - pScan->aEquiv[1] = iColumn; - pScan->nEquiv = 2; - pScan->iEquiv = 2; - return whereScanNext(pScan); -} - -/* -** Search for a term in the WHERE clause that is of the form "X " -** where X is a reference to the iColumn of table iCur and is one of -** the WO_xx operator codes specified by the op parameter. -** Return a pointer to the term. Return 0 if not found. -** -** The term returned might by Y= if there is another constraint in -** the WHERE clause that specifies that X=Y. Any such constraints will be -** identified by the WO_EQUIV bit in the pTerm->eOperator field. The -** aEquiv[] array holds X and all its equivalents, with each SQL variable -** taking up two slots in aEquiv[]. The first slot is for the cursor number -** and the second is for the column number. There are 22 slots in aEquiv[] -** so that means we can look for X plus up to 10 other equivalent values. -** Hence a search for X will return if X=A1 and A1=A2 and A2=A3 -** and ... and A9=A10 and A10=. -** -** If there are multiple terms in the WHERE clause of the form "X " -** then try for the one with no dependencies on - in other words where -** is a constant expression of some kind. Only return entries of -** the form "X Y" where Y is a column in another table if no terms of -** the form "X " exist. If no terms with a constant RHS -** exist, try to return a term that does not use WO_EQUIV. -*/ -static WhereTerm *findTerm( - WhereClause *pWC, /* The WHERE clause to be searched */ - int iCur, /* Cursor number of LHS */ - int iColumn, /* Column number of LHS */ - Bitmask notReady, /* RHS must not overlap with this mask */ - u32 op, /* Mask of WO_xx values describing operator */ - Index *pIdx /* Must be compatible with this index, if not NULL */ -){ - WhereTerm *pResult = 0; - WhereTerm *p; - WhereScan scan; - - p = whereScanInit(&scan, pWC, iCur, iColumn, op, pIdx); - while( p ){ - if( (p->prereqRight & notReady)==0 ){ - if( p->prereqRight==0 && (p->eOperator&WO_EQ)!=0 ){ - return p; - } - if( pResult==0 ) pResult = p; - } - p = whereScanNext(&scan); - } - return pResult; -} - -/* Forward reference */ -static void exprAnalyze(SrcList*, WhereClause*, int); - -/* -** Call exprAnalyze on all terms in a WHERE clause. -*/ -static void exprAnalyzeAll( - SrcList *pTabList, /* the FROM clause */ - WhereClause *pWC /* the WHERE clause to be analyzed */ -){ - int i; - for(i=pWC->nTerm-1; i>=0; i--){ - exprAnalyze(pTabList, pWC, i); - } -} #ifndef SQLITE_OMIT_LIKE_OPTIMIZATION /* @@ -109500,7 +128100,11 @@ static void exprAnalyzeAll( ** so and false if not. ** ** In order for the operator to be optimizible, the RHS must be a string -** literal that does not begin with a wildcard. +** literal that does not begin with a wildcard. The LHS must be a column +** that may only be NULL, a string, or a BLOB, never a number. (This means +** that virtual tables cannot participate in the LIKE optimization.) The +** collating sequence for the column on the LHS must be appropriate for +** the operator. */ static int isLikeOrGlob( Parse *pParse, /* Parsing and code generating context */ @@ -109518,6 +128122,7 @@ static int isLikeOrGlob( sqlite3 *db = pParse->db; /* Database connection */ sqlite3_value *pVal = 0; int op; /* Opcode of pRight */ + int rc; /* Result code to return */ if( !sqlite3IsLikeFunction(db, pExpr, pnoCase, wc) ){ return 0; @@ -109529,7 +128134,7 @@ static int isLikeOrGlob( pLeft = pList->a[1].pExpr; if( pLeft->op!=TK_COLUMN || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT - || IsVirtual(pLeft->pTab) + || IsVirtual(pLeft->pTab) /* Value might be numeric */ ){ /* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must ** be the name of an indexed column with TEXT affinity. */ @@ -109542,7 +128147,7 @@ static int isLikeOrGlob( if( op==TK_VARIABLE ){ Vdbe *pReprepare = pParse->pReprepare; int iCol = pRight->iColumn; - pVal = sqlite3VdbeGetBoundValue(pReprepare, iCol, SQLITE_AFF_NONE); + pVal = sqlite3VdbeGetBoundValue(pReprepare, iCol, SQLITE_AFF_BLOB); if( pVal && sqlite3_value_type(pVal)==SQLITE_TEXT ){ z = (char *)sqlite3_value_text(pVal); } @@ -109570,7 +128175,7 @@ static int isLikeOrGlob( ** value of the variable means there is no need to invoke the LIKE ** function, then no OP_Variable will be added to the program. ** This causes problems for the sqlite3_bind_parameter_name() - ** API. To workaround them, add a dummy OP_Variable here. + ** API. To work around them, add a dummy OP_Variable here. */ int r1 = sqlite3GetTempReg(pParse); sqlite3ExprCodeTarget(pParse, pRight, r1); @@ -109583,8 +128188,9 @@ static int isLikeOrGlob( } } + rc = (z!=0); sqlite3ValueFree(pVal); - return (z!=0); + return rc; } #endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */ @@ -109593,29 +128199,48 @@ static int isLikeOrGlob( /* ** Check to see if the given expression is of the form ** -** column MATCH expr +** column OP expr +** +** where OP is one of MATCH, GLOB, LIKE or REGEXP and "column" is a +** column of a virtual table. ** ** If it is then return TRUE. If not, return FALSE. */ static int isMatchOfColumn( - Expr *pExpr /* Test this expression */ + Expr *pExpr, /* Test this expression */ + unsigned char *peOp2 /* OUT: 0 for MATCH, or else an op2 value */ ){ + static const struct Op2 { + const char *zOp; + unsigned char eOp2; + } aOp[] = { + { "match", SQLITE_INDEX_CONSTRAINT_MATCH }, + { "glob", SQLITE_INDEX_CONSTRAINT_GLOB }, + { "like", SQLITE_INDEX_CONSTRAINT_LIKE }, + { "regexp", SQLITE_INDEX_CONSTRAINT_REGEXP } + }; ExprList *pList; + Expr *pCol; /* Column reference */ + int i; if( pExpr->op!=TK_FUNCTION ){ return 0; } - if( sqlite3StrICmp(pExpr->u.zToken,"match")!=0 ){ - return 0; - } pList = pExpr->x.pList; - if( pList->nExpr!=2 ){ + if( pList==0 || pList->nExpr!=2 ){ return 0; } - if( pList->a[1].pExpr->op != TK_COLUMN ){ + pCol = pList->a[1].pExpr; + if( pCol->op!=TK_COLUMN || !IsVirtual(pCol->pTab) ){ return 0; } - return 1; + for(i=0; iu.zToken, aOp[i].zOp)==0 ){ + *peOp2 = aOp[i].eOp2; + return 1; + } + } + return 0; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -109630,6 +128255,88 @@ static void transferJoinMarkings(Expr *pDerived, Expr *pBase){ } } +/* +** Mark term iChild as being a child of term iParent +*/ +static void markTermAsChild(WhereClause *pWC, int iChild, int iParent){ + pWC->a[iChild].iParent = iParent; + pWC->a[iChild].truthProb = pWC->a[iParent].truthProb; + pWC->a[iParent].nChild++; +} + +/* +** Return the N-th AND-connected subterm of pTerm. Or if pTerm is not +** a conjunction, then return just pTerm when N==0. If N is exceeds +** the number of available subterms, return NULL. +*/ +static WhereTerm *whereNthSubterm(WhereTerm *pTerm, int N){ + if( pTerm->eOperator!=WO_AND ){ + return N==0 ? pTerm : 0; + } + if( Nu.pAndInfo->wc.nTerm ){ + return &pTerm->u.pAndInfo->wc.a[N]; + } + return 0; +} + +/* +** Subterms pOne and pTwo are contained within WHERE clause pWC. The +** two subterms are in disjunction - they are OR-ed together. +** +** If these two terms are both of the form: "A op B" with the same +** A and B values but different operators and if the operators are +** compatible (if one is = and the other is <, for example) then +** add a new virtual AND term to pWC that is the combination of the +** two. +** +** Some examples: +** +** x x<=y +** x=y OR x=y --> x=y +** x<=y OR x x<=y +** +** The following is NOT generated: +** +** xy --> x!=y +*/ +static void whereCombineDisjuncts( + SrcList *pSrc, /* the FROM clause */ + WhereClause *pWC, /* The complete WHERE clause */ + WhereTerm *pOne, /* First disjunct */ + WhereTerm *pTwo /* Second disjunct */ +){ + u16 eOp = pOne->eOperator | pTwo->eOperator; + sqlite3 *db; /* Database connection (for malloc) */ + Expr *pNew; /* New virtual expression */ + int op; /* Operator for the combined expression */ + int idxNew; /* Index in pWC of the next virtual term */ + + if( (pOne->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return; + if( (pTwo->eOperator & (WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE))==0 ) return; + if( (eOp & (WO_EQ|WO_LT|WO_LE))!=eOp + && (eOp & (WO_EQ|WO_GT|WO_GE))!=eOp ) return; + assert( pOne->pExpr->pLeft!=0 && pOne->pExpr->pRight!=0 ); + assert( pTwo->pExpr->pLeft!=0 && pTwo->pExpr->pRight!=0 ); + if( sqlite3ExprCompare(pOne->pExpr->pLeft, pTwo->pExpr->pLeft, -1) ) return; + if( sqlite3ExprCompare(pOne->pExpr->pRight, pTwo->pExpr->pRight, -1) )return; + /* If we reach this point, it means the two subterms can be combined */ + if( (eOp & (eOp-1))!=0 ){ + if( eOp & (WO_LT|WO_LE) ){ + eOp = WO_LE; + }else{ + assert( eOp & (WO_GT|WO_GE) ); + eOp = WO_GE; + } + } + db = pWC->pWInfo->pParse->db; + pNew = sqlite3ExprDup(db, pOne->pExpr, 0); + if( pNew==0 ) return; + for(op=TK_EQ; eOp!=(WO_EQ<<(op-TK_EQ)); op++){ assert( opop = op; + idxNew = whereClauseInsert(pWC, pNew, TERM_VIRTUAL|TERM_DYNAMIC); + exprAnalyze(pSrc, pWC, idxNew); +} + #if !defined(SQLITE_OMIT_OR_OPTIMIZATION) && !defined(SQLITE_OMIT_SUBQUERY) /* ** Analyze a term that consists of two or more OR-connected @@ -109654,6 +128361,7 @@ static void transferJoinMarkings(Expr *pDerived, Expr *pBase){ ** (C) t1.x=t2.y OR (t1.x=t2.z AND t1.y=15) ** (D) x=expr1 OR (y>11 AND y<22 AND z LIKE '*hello*') ** (E) (p.a=1 AND q.b=2 AND r.c=3) OR (p.x=4 AND q.y=5 AND r.z=6) +** (F) x>A OR (x=A AND y>=B) ** ** CASE 1: ** @@ -109670,6 +128378,16 @@ static void transferJoinMarkings(Expr *pDerived, Expr *pBase){ ** ** CASE 2: ** +** If there are exactly two disjuncts and one side has x>A and the other side +** has x=A (for the same x and A) then add a new virtual conjunct term to the +** WHERE clause of the form "x>=A". Example: +** +** x>A OR (x=A AND y>B) adds: x>=A +** +** The added conjunct can sometimes be helpful in query planning. +** +** CASE 3: +** ** If all subterms are indexable by a single table T, then set ** ** WhereTerm.eOperator = WO_OR @@ -109689,22 +128407,22 @@ static void transferJoinMarkings(Expr *pDerived, Expr *pBase){ ** is decided elsewhere. This analysis only looks at whether subterms ** appropriate for indexing exist. ** -** All examples A through E above satisfy case 2. But if a term -** also statisfies case 1 (such as B) we know that the optimizer will -** always prefer case 1, so in that case we pretend that case 2 is not +** All examples A through E above satisfy case 3. But if a term +** also satisfies case 1 (such as B) we know that the optimizer will +** always prefer case 1, so in that case we pretend that case 3 is not ** satisfied. ** ** It might be the case that multiple tables are indexable. For example, ** (E) above is indexable on tables P, Q, and R. ** -** Terms that satisfy case 2 are candidates for lookup by using +** Terms that satisfy case 3 are candidates for lookup by using ** separate indices to find rowids for each subterm and composing ** the union of all rowids using a RowSet object. This is similar ** to "bitmap indices" in other database engines. ** ** OTHERWISE: ** -** If neither case 1 nor case 2 apply, then leave the eOperator set to +** If none of cases 1, 2, or 3 apply, then leave the eOperator set to ** zero. This term is not useful for search. */ static void exprAnalyzeOrTerm( @@ -109735,14 +128453,15 @@ static void exprAnalyzeOrTerm( if( pOrInfo==0 ) return; pTerm->wtFlags |= TERM_ORINFO; pOrWc = &pOrInfo->wc; - whereClauseInit(pOrWc, pWInfo); - whereSplit(pOrWc, pExpr, TK_OR); - exprAnalyzeAll(pSrc, pOrWc); + memset(pOrWc->aStatic, 0, sizeof(pOrWc->aStatic)); + sqlite3WhereClauseInit(pOrWc, pWInfo); + sqlite3WhereSplit(pOrWc, pExpr, TK_OR); + sqlite3WhereExprAnalyze(pSrc, pOrWc); if( db->mallocFailed ) return; assert( pOrWc->nTerm>=2 ); /* - ** Compute the set of tables that might satisfy cases 1 or 2. + ** Compute the set of tables that might satisfy cases 1 or 3. */ indexable = ~(Bitmask)0; chngToIN = ~(Bitmask)0; @@ -109751,7 +128470,7 @@ static void exprAnalyzeOrTerm( WhereAndInfo *pAndInfo; assert( (pOrTerm->wtFlags & (TERM_ANDINFO|TERM_ORINFO))==0 ); chngToIN = 0; - pAndInfo = sqlite3DbMallocRaw(db, sizeof(*pAndInfo)); + pAndInfo = sqlite3DbMallocRawNN(db, sizeof(*pAndInfo)); if( pAndInfo ){ WhereClause *pAndWC; WhereTerm *pAndTerm; @@ -109761,16 +128480,18 @@ static void exprAnalyzeOrTerm( pOrTerm->wtFlags |= TERM_ANDINFO; pOrTerm->eOperator = WO_AND; pAndWC = &pAndInfo->wc; - whereClauseInit(pAndWC, pWC->pWInfo); - whereSplit(pAndWC, pOrTerm->pExpr, TK_AND); - exprAnalyzeAll(pSrc, pAndWC); + memset(pAndWC->aStatic, 0, sizeof(pAndWC->aStatic)); + sqlite3WhereClauseInit(pAndWC, pWC->pWInfo); + sqlite3WhereSplit(pAndWC, pOrTerm->pExpr, TK_AND); + sqlite3WhereExprAnalyze(pSrc, pAndWC); pAndWC->pOuter = pWC; - testcase( db->mallocFailed ); if( !db->mallocFailed ){ for(j=0, pAndTerm=pAndWC->a; jnTerm; j++, pAndTerm++){ assert( pAndTerm->pExpr ); - if( allowedOp(pAndTerm->pExpr->op) ){ - b |= getMask(&pWInfo->sMaskSet, pAndTerm->leftCursor); + if( allowedOp(pAndTerm->pExpr->op) + || pAndTerm->eOperator==WO_MATCH + ){ + b |= sqlite3WhereGetMask(&pWInfo->sMaskSet, pAndTerm->leftCursor); } } } @@ -109781,10 +128502,10 @@ static void exprAnalyzeOrTerm( ** corresponding TERM_VIRTUAL term */ }else{ Bitmask b; - b = getMask(&pWInfo->sMaskSet, pOrTerm->leftCursor); + b = sqlite3WhereGetMask(&pWInfo->sMaskSet, pOrTerm->leftCursor); if( pOrTerm->wtFlags & TERM_VIRTUAL ){ WhereTerm *pOther = &pOrWc->a[pOrTerm->iParent]; - b |= getMask(&pWInfo->sMaskSet, pOther->leftCursor); + b |= sqlite3WhereGetMask(&pWInfo->sMaskSet, pOther->leftCursor); } indexable &= b; if( (pOrTerm->eOperator & WO_EQ)==0 ){ @@ -109796,12 +128517,26 @@ static void exprAnalyzeOrTerm( } /* - ** Record the set of tables that satisfy case 2. The set might be + ** Record the set of tables that satisfy case 3. The set might be ** empty. */ pOrInfo->indexable = indexable; pTerm->eOperator = indexable==0 ? 0 : WO_OR; + /* For a two-way OR, attempt to implementation case 2. + */ + if( indexable && pOrWc->nTerm==2 ){ + int iOne = 0; + WhereTerm *pOne; + while( (pOne = whereNthSubterm(&pOrWc->a[0],iOne++))!=0 ){ + int iTwo = 0; + WhereTerm *pTwo; + while( (pTwo = whereNthSubterm(&pOrWc->a[1],iTwo++))!=0 ){ + whereCombineDisjuncts(pSrc, pWC, pOne, pTwo); + } + } + } + /* ** chngToIN holds a set of tables that *might* satisfy case 1. But ** we have to do some additional checking to see if case 1 really @@ -109846,9 +128581,10 @@ static void exprAnalyzeOrTerm( assert( j==1 ); continue; } - if( (chngToIN & getMask(&pWInfo->sMaskSet, pOrTerm->leftCursor))==0 ){ + if( (chngToIN & sqlite3WhereGetMask(&pWInfo->sMaskSet, + pOrTerm->leftCursor))==0 ){ /* This term must be of the form t1.a==t2.b where t2 is in the - ** chngToIN set but t1 is not. This term will be either preceeded + ** chngToIN set but t1 is not. This term will be either preceded ** or follwed by an inverted copy (t2.b==t1.a). Skip this term ** and use its inversion. */ testcase( pOrTerm->wtFlags & TERM_COPIED ); @@ -109865,7 +128601,7 @@ static void exprAnalyzeOrTerm( ** on the second iteration */ assert( j==1 ); assert( IsPowerOfTwo(chngToIN) ); - assert( chngToIN==getMask(&pWInfo->sMaskSet, iCursor) ); + assert( chngToIN==sqlite3WhereGetMask(&pWInfo->sMaskSet, iCursor) ); break; } testcase( j==1 ); @@ -109917,7 +128653,7 @@ static void exprAnalyzeOrTerm( } assert( pLeft!=0 ); pDup = sqlite3ExprDup(db, pLeft, 0); - pNew = sqlite3PExpr(pParse, TK_IN, pDup, 0, 0); + pNew = sqlite3PExpr(pParse, TK_IN, pDup, 0); if( pNew ){ int idxNew; transferJoinMarkings(pNew, pExpr); @@ -109927,17 +128663,138 @@ static void exprAnalyzeOrTerm( testcase( idxNew==0 ); exprAnalyze(pSrc, pWC, idxNew); pTerm = &pWC->a[idxTerm]; - pWC->a[idxNew].iParent = idxTerm; - pTerm->nChild = 1; + markTermAsChild(pWC, idxNew, idxTerm); }else{ sqlite3ExprListDelete(db, pList); } - pTerm->eOperator = WO_NOOP; /* case 1 trumps case 2 */ + pTerm->eOperator = WO_NOOP; /* case 1 trumps case 3 */ } } } #endif /* !SQLITE_OMIT_OR_OPTIMIZATION && !SQLITE_OMIT_SUBQUERY */ +/* +** We already know that pExpr is a binary operator where both operands are +** column references. This routine checks to see if pExpr is an equivalence +** relation: +** 1. The SQLITE_Transitive optimization must be enabled +** 2. Must be either an == or an IS operator +** 3. Not originating in the ON clause of an OUTER JOIN +** 4. The affinities of A and B must be compatible +** 5a. Both operands use the same collating sequence OR +** 5b. The overall collating sequence is BINARY +** If this routine returns TRUE, that means that the RHS can be substituted +** for the LHS anyplace else in the WHERE clause where the LHS column occurs. +** This is an optimization. No harm comes from returning 0. But if 1 is +** returned when it should not be, then incorrect answers might result. +*/ +static int termIsEquivalence(Parse *pParse, Expr *pExpr){ + char aff1, aff2; + CollSeq *pColl; + const char *zColl1, *zColl2; + if( !OptimizationEnabled(pParse->db, SQLITE_Transitive) ) return 0; + if( pExpr->op!=TK_EQ && pExpr->op!=TK_IS ) return 0; + if( ExprHasProperty(pExpr, EP_FromJoin) ) return 0; + aff1 = sqlite3ExprAffinity(pExpr->pLeft); + aff2 = sqlite3ExprAffinity(pExpr->pRight); + if( aff1!=aff2 + && (!sqlite3IsNumericAffinity(aff1) || !sqlite3IsNumericAffinity(aff2)) + ){ + return 0; + } + pColl = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, pExpr->pRight); + if( pColl==0 || sqlite3StrICmp(pColl->zName, "BINARY")==0 ) return 1; + pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft); + zColl1 = pColl ? pColl->zName : 0; + pColl = sqlite3ExprCollSeq(pParse, pExpr->pRight); + zColl2 = pColl ? pColl->zName : 0; + return sqlite3_stricmp(zColl1, zColl2)==0; +} + +/* +** Recursively walk the expressions of a SELECT statement and generate +** a bitmask indicating which tables are used in that expression +** tree. +*/ +static Bitmask exprSelectUsage(WhereMaskSet *pMaskSet, Select *pS){ + Bitmask mask = 0; + while( pS ){ + SrcList *pSrc = pS->pSrc; + mask |= sqlite3WhereExprListUsage(pMaskSet, pS->pEList); + mask |= sqlite3WhereExprListUsage(pMaskSet, pS->pGroupBy); + mask |= sqlite3WhereExprListUsage(pMaskSet, pS->pOrderBy); + mask |= sqlite3WhereExprUsage(pMaskSet, pS->pWhere); + mask |= sqlite3WhereExprUsage(pMaskSet, pS->pHaving); + if( ALWAYS(pSrc!=0) ){ + int i; + for(i=0; inSrc; i++){ + mask |= exprSelectUsage(pMaskSet, pSrc->a[i].pSelect); + mask |= sqlite3WhereExprUsage(pMaskSet, pSrc->a[i].pOn); + } + } + pS = pS->pPrior; + } + return mask; +} + +/* +** Expression pExpr is one operand of a comparison operator that might +** be useful for indexing. This routine checks to see if pExpr appears +** in any index. Return TRUE (1) if pExpr is an indexed term and return +** FALSE (0) if not. If TRUE is returned, also set *piCur to the cursor +** number of the table that is indexed and *piColumn to the column number +** of the column that is indexed, or XN_EXPR (-2) if an expression is being +** indexed. +** +** If pExpr is a TK_COLUMN column reference, then this routine always returns +** true even if that particular column is not indexed, because the column +** might be added to an automatic index later. +*/ +static int exprMightBeIndexed( + SrcList *pFrom, /* The FROM clause */ + int op, /* The specific comparison operator */ + Bitmask mPrereq, /* Bitmask of FROM clause terms referenced by pExpr */ + Expr *pExpr, /* An operand of a comparison operator */ + int *piCur, /* Write the referenced table cursor number here */ + int *piColumn /* Write the referenced table column number here */ +){ + Index *pIdx; + int i; + int iCur; + + /* If this expression is a vector to the left or right of a + ** inequality constraint (>, <, >= or <=), perform the processing + ** on the first element of the vector. */ + assert( TK_GT+1==TK_LE && TK_GT+2==TK_LT && TK_GT+3==TK_GE ); + assert( TK_ISop==TK_VECTOR && (op>=TK_GT && ALWAYS(op<=TK_GE)) ){ + pExpr = pExpr->x.pList->a[0].pExpr; + } + + if( pExpr->op==TK_COLUMN ){ + *piCur = pExpr->iTable; + *piColumn = pExpr->iColumn; + return 1; + } + if( mPrereq==0 ) return 0; /* No table references */ + if( (mPrereq&(mPrereq-1))!=0 ) return 0; /* Refs more than one table */ + for(i=0; mPrereq>1; i++, mPrereq>>=1){} + iCur = pFrom->a[i].iCursor; + for(pIdx=pFrom->a[i].pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + if( pIdx->aColExpr==0 ) continue; + for(i=0; inKeyCol; i++){ + if( pIdx->aiColumn[i]!=XN_EXPR ) continue; + if( sqlite3ExprCompare(pExpr, pIdx->aColExpr->a[i].pExpr, iCur)==0 ){ + *piCur = iCur; + *piColumn = XN_EXPR; + return 1; + } + } + } + return 0; +} + /* ** The input to this routine is an WhereTerm structure with only the ** "pExpr" field filled in. The job of this routine is to analyze the @@ -109970,10 +128827,12 @@ static void exprAnalyze( Bitmask extraRight = 0; /* Extra dependencies on LEFT JOIN */ Expr *pStr1 = 0; /* RHS of LIKE/GLOB operator */ int isComplete = 0; /* RHS of LIKE/GLOB ends with wildcard */ - int noCase = 0; /* LIKE/GLOB distinguishes case */ + int noCase = 0; /* uppercase equivalent to lowercase */ int op; /* Top-level operator. pExpr->op */ Parse *pParse = pWInfo->pParse; /* Parsing context */ sqlite3 *db = pParse->db; /* Database connection */ + unsigned char eOp2; /* op2 value for LIKE/REGEXP/GLOB */ + int nLeft; /* Number of elements on left side vector */ if( db->mallocFailed ){ return; @@ -109982,44 +128841,61 @@ static void exprAnalyze( pMaskSet = &pWInfo->sMaskSet; pExpr = pTerm->pExpr; assert( pExpr->op!=TK_AS && pExpr->op!=TK_COLLATE ); - prereqLeft = exprTableUsage(pMaskSet, pExpr->pLeft); + prereqLeft = sqlite3WhereExprUsage(pMaskSet, pExpr->pLeft); op = pExpr->op; if( op==TK_IN ){ assert( pExpr->pRight==0 ); + if( sqlite3ExprCheckIN(pParse, pExpr) ) return; if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - pTerm->prereqRight = exprSelectTableUsage(pMaskSet, pExpr->x.pSelect); + pTerm->prereqRight = exprSelectUsage(pMaskSet, pExpr->x.pSelect); }else{ - pTerm->prereqRight = exprListTableUsage(pMaskSet, pExpr->x.pList); + pTerm->prereqRight = sqlite3WhereExprListUsage(pMaskSet, pExpr->x.pList); } }else if( op==TK_ISNULL ){ pTerm->prereqRight = 0; }else{ - pTerm->prereqRight = exprTableUsage(pMaskSet, pExpr->pRight); + pTerm->prereqRight = sqlite3WhereExprUsage(pMaskSet, pExpr->pRight); } - prereqAll = exprTableUsage(pMaskSet, pExpr); + prereqAll = sqlite3WhereExprUsage(pMaskSet, pExpr); if( ExprHasProperty(pExpr, EP_FromJoin) ){ - Bitmask x = getMask(pMaskSet, pExpr->iRightJoinTable); + Bitmask x = sqlite3WhereGetMask(pMaskSet, pExpr->iRightJoinTable); prereqAll |= x; extraRight = x-1; /* ON clause terms may not be used with an index ** on left table of a LEFT JOIN. Ticket #3015 */ + if( (prereqAll>>1)>=x ){ + sqlite3ErrorMsg(pParse, "ON clause references tables to its right"); + return; + } } pTerm->prereqAll = prereqAll; pTerm->leftCursor = -1; pTerm->iParent = -1; pTerm->eOperator = 0; if( allowedOp(op) ){ + int iCur, iColumn; Expr *pLeft = sqlite3ExprSkipCollate(pExpr->pLeft); Expr *pRight = sqlite3ExprSkipCollate(pExpr->pRight); u16 opMask = (pTerm->prereqRight & prereqLeft)==0 ? WO_ALL : WO_EQUIV; - if( pLeft->op==TK_COLUMN ){ - pTerm->leftCursor = pLeft->iTable; - pTerm->u.leftColumn = pLeft->iColumn; + + if( pTerm->iField>0 ){ + assert( op==TK_IN ); + assert( pLeft->op==TK_VECTOR ); + pLeft = pLeft->x.pList->a[pTerm->iField-1].pExpr; + } + + if( exprMightBeIndexed(pSrc, op, prereqLeft, pLeft, &iCur, &iColumn) ){ + pTerm->leftCursor = iCur; + pTerm->u.leftColumn = iColumn; pTerm->eOperator = operatorMask(op) & opMask; } - if( pRight && pRight->op==TK_COLUMN ){ + if( op==TK_IS ) pTerm->wtFlags |= TERM_IS; + if( pRight + && exprMightBeIndexed(pSrc, op, pTerm->prereqRight, pRight, &iCur,&iColumn) + ){ WhereTerm *pNew; Expr *pDup; u16 eExtraOp = 0; /* Extra bits for pNew->eOperator */ + assert( pTerm->iField==0 ); if( pTerm->leftCursor>=0 ){ int idxNew; pDup = sqlite3ExprDup(db, pExpr, 0); @@ -110030,14 +128906,12 @@ static void exprAnalyze( idxNew = whereClauseInsert(pWC, pDup, TERM_VIRTUAL|TERM_DYNAMIC); if( idxNew==0 ) return; pNew = &pWC->a[idxNew]; - pNew->iParent = idxTerm; + markTermAsChild(pWC, idxNew, idxTerm); + if( op==TK_IS ) pNew->wtFlags |= TERM_IS; pTerm = &pWC->a[idxTerm]; - pTerm->nChild = 1; pTerm->wtFlags |= TERM_COPIED; - if( pExpr->op==TK_EQ - && !ExprHasProperty(pExpr, EP_FromJoin) - && OptimizationEnabled(db, SQLITE_Transitive) - ){ + + if( termIsEquivalence(pParse, pDup) ){ pTerm->eOperator |= WO_EQUIV; eExtraOp = WO_EQUIV; } @@ -110046,9 +128920,8 @@ static void exprAnalyze( pNew = pTerm; } exprCommute(pParse, pDup); - pLeft = sqlite3ExprSkipCollate(pDup->pLeft); - pNew->leftCursor = pLeft->iTable; - pNew->u.leftColumn = pLeft->iColumn; + pNew->leftCursor = iCur; + pNew->u.leftColumn = iColumn; testcase( (prereqLeft | extraRight) != prereqLeft ); pNew->prereqRight = prereqLeft | extraRight; pNew->prereqAll = prereqAll; @@ -110083,15 +128956,14 @@ static void exprAnalyze( int idxNew; pNewExpr = sqlite3PExpr(pParse, ops[i], sqlite3ExprDup(db, pExpr->pLeft, 0), - sqlite3ExprDup(db, pList->a[i].pExpr, 0), 0); + sqlite3ExprDup(db, pList->a[i].pExpr, 0)); transferJoinMarkings(pNewExpr, pExpr); idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew==0 ); exprAnalyze(pSrc, pWC, idxNew); pTerm = &pWC->a[idxTerm]; - pWC->a[idxNew].iParent = idxTerm; + markTermAsChild(pWC, idxNew, idxTerm); } - pTerm->nChild = 2; } #endif /* SQLITE_OMIT_BETWEEN_OPTIMIZATION */ @@ -110110,12 +128982,15 @@ static void exprAnalyze( /* Add constraints to reduce the search space on a LIKE or GLOB ** operator. ** - ** A like pattern of the form "x LIKE 'abc%'" is changed into constraints + ** A like pattern of the form "x LIKE 'aBc%'" is changed into constraints ** - ** x>='abc' AND x<'abd' AND x LIKE 'abc%' + ** x>='ABC' AND x<'abd' AND x LIKE 'aBc%' ** ** The last character of the prefix "abc" is incremented to form the - ** termination condition "abd". + ** termination condition "abd". If case is not significant (the default + ** for LIKE) then the lower-bound is made all uppercase and the upper- + ** bound is made all lowercase so that the bounds also work when comparing + ** BLOBs. */ if( pWC->op==TK_AND && isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase) @@ -110126,10 +129001,26 @@ static void exprAnalyze( Expr *pNewExpr2; int idxNew1; int idxNew2; - Token sCollSeqName; /* Name of collating sequence */ + const char *zCollSeqName; /* Name of collating sequence */ + const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC; pLeft = pExpr->x.pList->a[1].pExpr; pStr2 = sqlite3ExprDup(db, pStr1, 0); + + /* Convert the lower bound to upper-case and the upper bound to + ** lower-case (upper-case is less than lower-case in ASCII) so that + ** the range constraints also work for BLOBs + */ + if( noCase && !pParse->db->mallocFailed ){ + int i; + char c; + pTerm->wtFlags |= TERM_LIKE; + for(i=0; (c = pStr1->u.zToken[i])!=0; i++){ + pStr1->u.zToken[i] = sqlite3Toupper(c); + pStr2->u.zToken[i] = sqlite3Tolower(c); + } + } + if( !db->mallocFailed ){ u8 c, *pC; /* Last character before the first wildcard */ pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1]; @@ -110146,29 +129037,27 @@ static void exprAnalyze( } *pC = c + 1; } - sCollSeqName.z = noCase ? "NOCASE" : "BINARY"; - sCollSeqName.n = 6; + zCollSeqName = noCase ? "NOCASE" : "BINARY"; pNewExpr1 = sqlite3ExprDup(db, pLeft, 0); - pNewExpr1 = sqlite3PExpr(pParse, TK_GE, - sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName), - pStr1, 0); + pNewExpr1 = sqlite3PExpr(pParse, TK_GE, + sqlite3ExprAddCollateString(pParse,pNewExpr1,zCollSeqName), + pStr1); transferJoinMarkings(pNewExpr1, pExpr); - idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC); + idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags); testcase( idxNew1==0 ); exprAnalyze(pSrc, pWC, idxNew1); pNewExpr2 = sqlite3ExprDup(db, pLeft, 0); pNewExpr2 = sqlite3PExpr(pParse, TK_LT, - sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName), - pStr2, 0); + sqlite3ExprAddCollateString(pParse,pNewExpr2,zCollSeqName), + pStr2); transferJoinMarkings(pNewExpr2, pExpr); - idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC); + idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags); testcase( idxNew2==0 ); exprAnalyze(pSrc, pWC, idxNew2); pTerm = &pWC->a[idxTerm]; if( isComplete ){ - pWC->a[idxNew1].iParent = idxTerm; - pWC->a[idxNew2].iParent = idxTerm; - pTerm->nChild = 2; + markTermAsChild(pWC, idxNew1, idxTerm); + markTermAsChild(pWC, idxNew2, idxTerm); } } #endif /* SQLITE_OMIT_LIKE_OPTIMIZATION */ @@ -110180,7 +129069,7 @@ static void exprAnalyze( ** virtual tables. The native query optimizer does not attempt ** to do anything with MATCH functions. */ - if( isMatchOfColumn(pExpr) ){ + if( pWC->op==TK_AND && isMatchOfColumn(pExpr, &eOp2) ){ int idxNew; Expr *pRight, *pLeft; WhereTerm *pNewTerm; @@ -110188,12 +129077,12 @@ static void exprAnalyze( pRight = pExpr->x.pList->a[0].pExpr; pLeft = pExpr->x.pList->a[1].pExpr; - prereqExpr = exprTableUsage(pMaskSet, pRight); - prereqColumn = exprTableUsage(pMaskSet, pLeft); + prereqExpr = sqlite3WhereExprUsage(pMaskSet, pRight); + prereqColumn = sqlite3WhereExprUsage(pMaskSet, pLeft); if( (prereqExpr & prereqColumn)==0 ){ Expr *pNewExpr; pNewExpr = sqlite3PExpr(pParse, TK_MATCH, - 0, sqlite3ExprDup(db, pRight, 0), 0); + 0, sqlite3ExprDup(db, pRight, 0)); idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC); testcase( idxNew==0 ); pNewTerm = &pWC->a[idxNew]; @@ -110201,30 +129090,80 @@ static void exprAnalyze( pNewTerm->leftCursor = pLeft->iTable; pNewTerm->u.leftColumn = pLeft->iColumn; pNewTerm->eOperator = WO_MATCH; - pNewTerm->iParent = idxTerm; + pNewTerm->eMatchOp = eOp2; + markTermAsChild(pWC, idxNew, idxTerm); pTerm = &pWC->a[idxTerm]; - pTerm->nChild = 1; pTerm->wtFlags |= TERM_COPIED; pNewTerm->prereqAll = pTerm->prereqAll; } } #endif /* SQLITE_OMIT_VIRTUALTABLE */ + /* If there is a vector == or IS term - e.g. "(a, b) == (?, ?)" - create + ** new terms for each component comparison - "a = ?" and "b = ?". The + ** new terms completely replace the original vector comparison, which is + ** no longer used. + ** + ** This is only required if at least one side of the comparison operation + ** is not a sub-select. */ + if( pWC->op==TK_AND + && (pExpr->op==TK_EQ || pExpr->op==TK_IS) + && (nLeft = sqlite3ExprVectorSize(pExpr->pLeft))>1 + && sqlite3ExprVectorSize(pExpr->pRight)==nLeft + && ( (pExpr->pLeft->flags & EP_xIsSelect)==0 + || (pExpr->pRight->flags & EP_xIsSelect)==0) + ){ + int i; + for(i=0; ipLeft, i); + Expr *pRight = sqlite3ExprForVectorField(pParse, pExpr->pRight, i); + + pNew = sqlite3PExpr(pParse, pExpr->op, pLeft, pRight); + transferJoinMarkings(pNew, pExpr); + idxNew = whereClauseInsert(pWC, pNew, TERM_DYNAMIC); + exprAnalyze(pSrc, pWC, idxNew); + } + pTerm = &pWC->a[idxTerm]; + pTerm->wtFlags = TERM_CODED|TERM_VIRTUAL; /* Disable the original */ + pTerm->eOperator = 0; + } + + /* If there is a vector IN term - e.g. "(a, b) IN (SELECT ...)" - create + ** a virtual term for each vector component. The expression object + ** used by each such virtual term is pExpr (the full vector IN(...) + ** expression). The WhereTerm.iField variable identifies the index within + ** the vector on the LHS that the virtual term represents. + ** + ** This only works if the RHS is a simple SELECT, not a compound + */ + if( pWC->op==TK_AND && pExpr->op==TK_IN && pTerm->iField==0 + && pExpr->pLeft->op==TK_VECTOR + && pExpr->x.pSelect->pPrior==0 + ){ + int i; + for(i=0; ipLeft); i++){ + int idxNew; + idxNew = whereClauseInsert(pWC, pExpr, TERM_VIRTUAL); + pWC->a[idxNew].iField = i+1; + exprAnalyze(pSrc, pWC, idxNew); + markTermAsChild(pWC, idxNew, idxTerm); + } + } + #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 /* When sqlite_stat3 histogram data is available an operator of the ** form "x IS NOT NULL" can sometimes be evaluated more efficiently ** as "x>NULL" if x is not an INTEGER PRIMARY KEY. So construct a ** virtual term of that form. ** - ** Note that the virtual term must be tagged with TERM_VNULL. This - ** TERM_VNULL tag will suppress the not-null check at the beginning - ** of the loop. Without the TERM_VNULL flag, the not-null check at - ** the start of the loop will prevent any results from being returned. + ** Note that the virtual term must be tagged with TERM_VNULL. */ if( pExpr->op==TK_NOTNULL && pExpr->pLeft->op==TK_COLUMN && pExpr->pLeft->iColumn>=0 - && OptimizationEnabled(db, SQLITE_Stat3) + && OptimizationEnabled(db, SQLITE_Stat34) ){ Expr *pNewExpr; Expr *pLeft = pExpr->pLeft; @@ -110233,7 +129172,7 @@ static void exprAnalyze( pNewExpr = sqlite3PExpr(pParse, TK_GT, sqlite3ExprDup(db, pLeft, 0), - sqlite3PExpr(pParse, TK_NULL, 0, 0, 0), 0); + sqlite3ExprAlloc(db, TK_NULL, 0, 0)); idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC|TERM_VNULL); @@ -110243,9 +129182,8 @@ static void exprAnalyze( pNewTerm->leftCursor = pLeft->iTable; pNewTerm->u.leftColumn = pLeft->iColumn; pNewTerm->eOperator = WO_GT; - pNewTerm->iParent = idxTerm; + markTermAsChild(pWC, idxNew, idxTerm); pTerm = &pWC->a[idxTerm]; - pTerm->nChild = 1; pTerm->wtFlags |= TERM_COPIED; pNewTerm->prereqAll = pTerm->prereqAll; } @@ -110255,11 +129193,561 @@ static void exprAnalyze( /* Prevent ON clause terms of a LEFT JOIN from being used to drive ** an index for tables to the left of the join. */ + testcase( pTerm!=&pWC->a[idxTerm] ); + pTerm = &pWC->a[idxTerm]; pTerm->prereqRight |= extraRight; } +/*************************************************************************** +** Routines with file scope above. Interface to the rest of the where.c +** subsystem follows. +***************************************************************************/ + /* -** This function searches pList for a entry that matches the iCol-th column +** This routine identifies subexpressions in the WHERE clause where +** each subexpression is separated by the AND operator or some other +** operator specified in the op parameter. The WhereClause structure +** is filled with pointers to subexpressions. For example: +** +** WHERE a=='hello' AND coalesce(b,11)<10 AND (c+12!=d OR c==22) +** \________/ \_______________/ \________________/ +** slot[0] slot[1] slot[2] +** +** The original WHERE clause in pExpr is unaltered. All this routine +** does is make slot[] entries point to substructure within pExpr. +** +** In the previous sentence and in the diagram, "slot[]" refers to +** the WhereClause.a[] array. The slot[] array grows as needed to contain +** all terms of the WHERE clause. +*/ +SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause *pWC, Expr *pExpr, u8 op){ + Expr *pE2 = sqlite3ExprSkipCollate(pExpr); + pWC->op = op; + if( pE2==0 ) return; + if( pE2->op!=op ){ + whereClauseInsert(pWC, pExpr, 0); + }else{ + sqlite3WhereSplit(pWC, pE2->pLeft, op); + sqlite3WhereSplit(pWC, pE2->pRight, op); + } +} + +/* +** Initialize a preallocated WhereClause structure. +*/ +SQLITE_PRIVATE void sqlite3WhereClauseInit( + WhereClause *pWC, /* The WhereClause to be initialized */ + WhereInfo *pWInfo /* The WHERE processing context */ +){ + pWC->pWInfo = pWInfo; + pWC->pOuter = 0; + pWC->nTerm = 0; + pWC->nSlot = ArraySize(pWC->aStatic); + pWC->a = pWC->aStatic; +} + +/* +** Deallocate a WhereClause structure. The WhereClause structure +** itself is not freed. This routine is the inverse of +** sqlite3WhereClauseInit(). +*/ +SQLITE_PRIVATE void sqlite3WhereClauseClear(WhereClause *pWC){ + int i; + WhereTerm *a; + sqlite3 *db = pWC->pWInfo->pParse->db; + for(i=pWC->nTerm-1, a=pWC->a; i>=0; i--, a++){ + if( a->wtFlags & TERM_DYNAMIC ){ + sqlite3ExprDelete(db, a->pExpr); + } + if( a->wtFlags & TERM_ORINFO ){ + whereOrInfoDelete(db, a->u.pOrInfo); + }else if( a->wtFlags & TERM_ANDINFO ){ + whereAndInfoDelete(db, a->u.pAndInfo); + } + } + if( pWC->a!=pWC->aStatic ){ + sqlite3DbFree(db, pWC->a); + } +} + + +/* +** These routines walk (recursively) an expression tree and generate +** a bitmask indicating which tables are used in that expression +** tree. +*/ +SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet *pMaskSet, Expr *p){ + Bitmask mask; + if( p==0 ) return 0; + if( p->op==TK_COLUMN ){ + mask = sqlite3WhereGetMask(pMaskSet, p->iTable); + return mask; + } + assert( !ExprHasProperty(p, EP_TokenOnly) ); + mask = p->pRight ? sqlite3WhereExprUsage(pMaskSet, p->pRight) : 0; + if( p->pLeft ) mask |= sqlite3WhereExprUsage(pMaskSet, p->pLeft); + if( ExprHasProperty(p, EP_xIsSelect) ){ + mask |= exprSelectUsage(pMaskSet, p->x.pSelect); + }else if( p->x.pList ){ + mask |= sqlite3WhereExprListUsage(pMaskSet, p->x.pList); + } + return mask; +} +SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet *pMaskSet, ExprList *pList){ + int i; + Bitmask mask = 0; + if( pList ){ + for(i=0; inExpr; i++){ + mask |= sqlite3WhereExprUsage(pMaskSet, pList->a[i].pExpr); + } + } + return mask; +} + + +/* +** Call exprAnalyze on all terms in a WHERE clause. +** +** Note that exprAnalyze() might add new virtual terms onto the +** end of the WHERE clause. We do not want to analyze these new +** virtual terms, so start analyzing at the end and work forward +** so that the added virtual terms are never processed. +*/ +SQLITE_PRIVATE void sqlite3WhereExprAnalyze( + SrcList *pTabList, /* the FROM clause */ + WhereClause *pWC /* the WHERE clause to be analyzed */ +){ + int i; + for(i=pWC->nTerm-1; i>=0; i--){ + exprAnalyze(pTabList, pWC, i); + } +} + +/* +** For table-valued-functions, transform the function arguments into +** new WHERE clause terms. +** +** Each function argument translates into an equality constraint against +** a HIDDEN column in the table. +*/ +SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( + Parse *pParse, /* Parsing context */ + struct SrcList_item *pItem, /* The FROM clause term to process */ + WhereClause *pWC /* Xfer function arguments to here */ +){ + Table *pTab; + int j, k; + ExprList *pArgs; + Expr *pColRef; + Expr *pTerm; + if( pItem->fg.isTabFunc==0 ) return; + pTab = pItem->pTab; + assert( pTab!=0 ); + pArgs = pItem->u1.pFuncArg; + if( pArgs==0 ) return; + for(j=k=0; jnExpr; j++){ + while( knCol && (pTab->aCol[k].colFlags & COLFLAG_HIDDEN)==0 ){k++;} + if( k>=pTab->nCol ){ + sqlite3ErrorMsg(pParse, "too many arguments on %s() - max %d", + pTab->zName, j); + return; + } + pColRef = sqlite3ExprAlloc(pParse->db, TK_COLUMN, 0, 0); + if( pColRef==0 ) return; + pColRef->iTable = pItem->iCursor; + pColRef->iColumn = k++; + pColRef->pTab = pTab; + pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef, + sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0)); + whereClauseInsert(pWC, pTerm, TERM_DYNAMIC); + } +} + +/************** End of whereexpr.c *******************************************/ +/************** Begin file where.c *******************************************/ +/* +** 2001 September 15 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This module contains C code that generates VDBE code used to process +** the WHERE clause of SQL statements. This module is responsible for +** generating the code that loops through a table looking for applicable +** rows. Indices are selected and used to speed the search when doing +** so is applicable. Because this module is responsible for selecting +** indices, you might also think of this module as the "query optimizer". +*/ +/* #include "sqliteInt.h" */ +/* #include "whereInt.h" */ + +/* Forward declaration of methods */ +static int whereLoopResize(sqlite3*, WhereLoop*, int); + +/* Test variable that can be set to enable WHERE tracing */ +#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) +/***/ int sqlite3WhereTrace = 0; +#endif + + +/* +** Return the estimated number of output rows from a WHERE clause +*/ +SQLITE_PRIVATE LogEst sqlite3WhereOutputRowCount(WhereInfo *pWInfo){ + return pWInfo->nRowOut; +} + +/* +** Return one of the WHERE_DISTINCT_xxxxx values to indicate how this +** WHERE clause returns outputs for DISTINCT processing. +*/ +SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo *pWInfo){ + return pWInfo->eDistinct; +} + +/* +** Return TRUE if the WHERE clause returns rows in ORDER BY order. +** Return FALSE if the output needs to be sorted. +*/ +SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo *pWInfo){ + return pWInfo->nOBSat; +} + +/* +** Return TRUE if the innermost loop of the WHERE clause implementation +** returns rows in ORDER BY order for complete run of the inner loop. +** +** Across multiple iterations of outer loops, the output rows need not be +** sorted. As long as rows are sorted for just the innermost loop, this +** routine can return TRUE. +*/ +SQLITE_PRIVATE int sqlite3WhereOrderedInnerLoop(WhereInfo *pWInfo){ + return pWInfo->bOrderedInnerLoop; +} + +/* +** Return the VDBE address or label to jump to in order to continue +** immediately with the next row of a WHERE clause. +*/ +SQLITE_PRIVATE int sqlite3WhereContinueLabel(WhereInfo *pWInfo){ + assert( pWInfo->iContinue!=0 ); + return pWInfo->iContinue; +} + +/* +** Return the VDBE address or label to jump to in order to break +** out of a WHERE loop. +*/ +SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo *pWInfo){ + return pWInfo->iBreak; +} + +/* +** Return ONEPASS_OFF (0) if an UPDATE or DELETE statement is unable to +** operate directly on the rowis returned by a WHERE clause. Return +** ONEPASS_SINGLE (1) if the statement can operation directly because only +** a single row is to be changed. Return ONEPASS_MULTI (2) if the one-pass +** optimization can be used on multiple +** +** If the ONEPASS optimization is used (if this routine returns true) +** then also write the indices of open cursors used by ONEPASS +** into aiCur[0] and aiCur[1]. iaCur[0] gets the cursor of the data +** table and iaCur[1] gets the cursor used by an auxiliary index. +** Either value may be -1, indicating that cursor is not used. +** Any cursors returned will have been opened for writing. +** +** aiCur[0] and aiCur[1] both get -1 if the where-clause logic is +** unable to use the ONEPASS optimization. +*/ +SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo *pWInfo, int *aiCur){ + memcpy(aiCur, pWInfo->aiCurOnePass, sizeof(int)*2); +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace && pWInfo->eOnePass!=ONEPASS_OFF ){ + sqlite3DebugPrintf("%s cursors: %d %d\n", + pWInfo->eOnePass==ONEPASS_SINGLE ? "ONEPASS_SINGLE" : "ONEPASS_MULTI", + aiCur[0], aiCur[1]); + } +#endif + return pWInfo->eOnePass; +} + +/* +** Move the content of pSrc into pDest +*/ +static void whereOrMove(WhereOrSet *pDest, WhereOrSet *pSrc){ + pDest->n = pSrc->n; + memcpy(pDest->a, pSrc->a, pDest->n*sizeof(pDest->a[0])); +} + +/* +** Try to insert a new prerequisite/cost entry into the WhereOrSet pSet. +** +** The new entry might overwrite an existing entry, or it might be +** appended, or it might be discarded. Do whatever is the right thing +** so that pSet keeps the N_OR_COST best entries seen so far. +*/ +static int whereOrInsert( + WhereOrSet *pSet, /* The WhereOrSet to be updated */ + Bitmask prereq, /* Prerequisites of the new entry */ + LogEst rRun, /* Run-cost of the new entry */ + LogEst nOut /* Number of outputs for the new entry */ +){ + u16 i; + WhereOrCost *p; + for(i=pSet->n, p=pSet->a; i>0; i--, p++){ + if( rRun<=p->rRun && (prereq & p->prereq)==prereq ){ + goto whereOrInsert_done; + } + if( p->rRun<=rRun && (p->prereq & prereq)==p->prereq ){ + return 0; + } + } + if( pSet->na[pSet->n++]; + p->nOut = nOut; + }else{ + p = pSet->a; + for(i=1; in; i++){ + if( p->rRun>pSet->a[i].rRun ) p = pSet->a + i; + } + if( p->rRun<=rRun ) return 0; + } +whereOrInsert_done: + p->prereq = prereq; + p->rRun = rRun; + if( p->nOut>nOut ) p->nOut = nOut; + return 1; +} + +/* +** Return the bitmask for the given cursor number. Return 0 if +** iCursor is not in the set. +*/ +SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet *pMaskSet, int iCursor){ + int i; + assert( pMaskSet->n<=(int)sizeof(Bitmask)*8 ); + for(i=0; in; i++){ + if( pMaskSet->ix[i]==iCursor ){ + return MASKBIT(i); + } + } + return 0; +} + +/* +** Create a new mask for cursor iCursor. +** +** There is one cursor per table in the FROM clause. The number of +** tables in the FROM clause is limited by a test early in the +** sqlite3WhereBegin() routine. So we know that the pMaskSet->ix[] +** array will never overflow. +*/ +static void createMask(WhereMaskSet *pMaskSet, int iCursor){ + assert( pMaskSet->n < ArraySize(pMaskSet->ix) ); + pMaskSet->ix[pMaskSet->n++] = iCursor; +} + +/* +** Advance to the next WhereTerm that matches according to the criteria +** established when the pScan object was initialized by whereScanInit(). +** Return NULL if there are no more matching WhereTerms. +*/ +static WhereTerm *whereScanNext(WhereScan *pScan){ + int iCur; /* The cursor on the LHS of the term */ + i16 iColumn; /* The column on the LHS of the term. -1 for IPK */ + Expr *pX; /* An expression being tested */ + WhereClause *pWC; /* Shorthand for pScan->pWC */ + WhereTerm *pTerm; /* The term being tested */ + int k = pScan->k; /* Where to start scanning */ + + assert( pScan->iEquiv<=pScan->nEquiv ); + pWC = pScan->pWC; + while(1){ + iColumn = pScan->aiColumn[pScan->iEquiv-1]; + iCur = pScan->aiCur[pScan->iEquiv-1]; + assert( pWC!=0 ); + do{ + for(pTerm=pWC->a+k; knTerm; k++, pTerm++){ + if( pTerm->leftCursor==iCur + && pTerm->u.leftColumn==iColumn + && (iColumn!=XN_EXPR + || sqlite3ExprCompare(pTerm->pExpr->pLeft,pScan->pIdxExpr,iCur)==0) + && (pScan->iEquiv<=1 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin)) + ){ + if( (pTerm->eOperator & WO_EQUIV)!=0 + && pScan->nEquivaiCur) + && (pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight))->op==TK_COLUMN + ){ + int j; + for(j=0; jnEquiv; j++){ + if( pScan->aiCur[j]==pX->iTable + && pScan->aiColumn[j]==pX->iColumn ){ + break; + } + } + if( j==pScan->nEquiv ){ + pScan->aiCur[j] = pX->iTable; + pScan->aiColumn[j] = pX->iColumn; + pScan->nEquiv++; + } + } + if( (pTerm->eOperator & pScan->opMask)!=0 ){ + /* Verify the affinity and collating sequence match */ + if( pScan->zCollName && (pTerm->eOperator & WO_ISNULL)==0 ){ + CollSeq *pColl; + Parse *pParse = pWC->pWInfo->pParse; + pX = pTerm->pExpr; + if( !sqlite3IndexAffinityOk(pX, pScan->idxaff) ){ + continue; + } + assert(pX->pLeft); + pColl = sqlite3BinaryCompareCollSeq(pParse, + pX->pLeft, pX->pRight); + if( pColl==0 ) pColl = pParse->db->pDfltColl; + if( sqlite3StrICmp(pColl->zName, pScan->zCollName) ){ + continue; + } + } + if( (pTerm->eOperator & (WO_EQ|WO_IS))!=0 + && (pX = pTerm->pExpr->pRight)->op==TK_COLUMN + && pX->iTable==pScan->aiCur[0] + && pX->iColumn==pScan->aiColumn[0] + ){ + testcase( pTerm->eOperator & WO_IS ); + continue; + } + pScan->pWC = pWC; + pScan->k = k+1; + return pTerm; + } + } + } + pWC = pWC->pOuter; + k = 0; + }while( pWC!=0 ); + if( pScan->iEquiv>=pScan->nEquiv ) break; + pWC = pScan->pOrigWC; + k = 0; + pScan->iEquiv++; + } + return 0; +} + +/* +** Initialize a WHERE clause scanner object. Return a pointer to the +** first match. Return NULL if there are no matches. +** +** The scanner will be searching the WHERE clause pWC. It will look +** for terms of the form "X " where X is column iColumn of table +** iCur. Or if pIdx!=0 then X is column iColumn of index pIdx. pIdx +** must be one of the indexes of table iCur. +** +** The must be one of the operators described by opMask. +** +** If the search is for X and the WHERE clause contains terms of the +** form X=Y then this routine might also return terms of the form +** "Y ". The number of levels of transitivity is limited, +** but is enough to handle most commonly occurring SQL statements. +** +** If X is not the INTEGER PRIMARY KEY then X must be compatible with +** index pIdx. +*/ +static WhereTerm *whereScanInit( + WhereScan *pScan, /* The WhereScan object being initialized */ + WhereClause *pWC, /* The WHERE clause to be scanned */ + int iCur, /* Cursor to scan for */ + int iColumn, /* Column to scan for */ + u32 opMask, /* Operator(s) to scan for */ + Index *pIdx /* Must be compatible with this index */ +){ + pScan->pOrigWC = pWC; + pScan->pWC = pWC; + pScan->pIdxExpr = 0; + pScan->idxaff = 0; + pScan->zCollName = 0; + if( pIdx ){ + int j = iColumn; + iColumn = pIdx->aiColumn[j]; + if( iColumn==XN_EXPR ){ + pScan->pIdxExpr = pIdx->aColExpr->a[j].pExpr; + pScan->zCollName = pIdx->azColl[j]; + }else if( iColumn==pIdx->pTable->iPKey ){ + iColumn = XN_ROWID; + }else if( iColumn>=0 ){ + pScan->idxaff = pIdx->pTable->aCol[iColumn].affinity; + pScan->zCollName = pIdx->azColl[j]; + } + }else if( iColumn==XN_EXPR ){ + return 0; + } + pScan->opMask = opMask; + pScan->k = 0; + pScan->aiCur[0] = iCur; + pScan->aiColumn[0] = iColumn; + pScan->nEquiv = 1; + pScan->iEquiv = 1; + return whereScanNext(pScan); +} + +/* +** Search for a term in the WHERE clause that is of the form "X " +** where X is a reference to the iColumn of table iCur or of index pIdx +** if pIdx!=0 and is one of the WO_xx operator codes specified by +** the op parameter. Return a pointer to the term. Return 0 if not found. +** +** If pIdx!=0 then it must be one of the indexes of table iCur. +** Search for terms matching the iColumn-th column of pIdx +** rather than the iColumn-th column of table iCur. +** +** The term returned might by Y= if there is another constraint in +** the WHERE clause that specifies that X=Y. Any such constraints will be +** identified by the WO_EQUIV bit in the pTerm->eOperator field. The +** aiCur[]/iaColumn[] arrays hold X and all its equivalents. There are 11 +** slots in aiCur[]/aiColumn[] so that means we can look for X plus up to 10 +** other equivalent values. Hence a search for X will return if X=A1 +** and A1=A2 and A2=A3 and ... and A9=A10 and A10=. +** +** If there are multiple terms in the WHERE clause of the form "X " +** then try for the one with no dependencies on - in other words where +** is a constant expression of some kind. Only return entries of +** the form "X Y" where Y is a column in another table if no terms of +** the form "X " exist. If no terms with a constant RHS +** exist, try to return a term that does not use WO_EQUIV. +*/ +SQLITE_PRIVATE WhereTerm *sqlite3WhereFindTerm( + WhereClause *pWC, /* The WHERE clause to be searched */ + int iCur, /* Cursor number of LHS */ + int iColumn, /* Column number of LHS */ + Bitmask notReady, /* RHS must not overlap with this mask */ + u32 op, /* Mask of WO_xx values describing operator */ + Index *pIdx /* Must be compatible with this index, if not NULL */ +){ + WhereTerm *pResult = 0; + WhereTerm *p; + WhereScan scan; + + p = whereScanInit(&scan, pWC, iCur, iColumn, op, pIdx); + op &= WO_EQ|WO_IS; + while( p ){ + if( (p->prereqRight & notReady)==0 ){ + if( p->prereqRight==0 && (p->eOperator&op)!=0 ){ + testcase( p->eOperator & WO_IS ); + return p; + } + if( pResult==0 ) pResult = p; + } + p = whereScanNext(&scan); + } + return pResult; +} + +/* +** This function searches pList for an entry that matches the iCol-th column ** of index pIdx. ** ** If such an expression is found, its index in pList->a[] is returned. If @@ -110282,7 +129770,7 @@ static int findIndexCol( && p->iTable==iBase ){ CollSeq *pColl = sqlite3ExprCollSeq(pParse, pList->a[i].pExpr); - if( ALWAYS(pColl) && 0==sqlite3StrICmp(pColl->zName, zColl) ){ + if( pColl && 0==sqlite3StrICmp(pColl->zName, zColl) ){ return i; } } @@ -110291,12 +129779,31 @@ static int findIndexCol( return -1; } +/* +** Return TRUE if the iCol-th column of index pIdx is NOT NULL +*/ +static int indexColumnNotNull(Index *pIdx, int iCol){ + int j; + assert( pIdx!=0 ); + assert( iCol>=0 && iColnColumn ); + j = pIdx->aiColumn[iCol]; + if( j>=0 ){ + return pIdx->pTable->aCol[j].notNull; + }else if( j==(-1) ){ + return 1; + }else{ + assert( j==(-2) ); + return 0; /* Assume an indexed expression can always yield a NULL */ + + } +} + /* ** Return true if the DISTINCT expression-list passed as the third argument ** is redundant. ** -** A DISTINCT list is redundant if the database contains some subset of -** columns that are unique and non-null. +** A DISTINCT list is redundant if any subset of the columns in the +** DISTINCT list are collectively unique and individually non-null. */ static int isDistinctRedundant( Parse *pParse, /* Parsing context */ @@ -110339,14 +129846,11 @@ static int isDistinctRedundant( ** contain a "col=X" term are subject to a NOT NULL constraint. */ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->onError==OE_None ) continue; + if( !IsUniqueIndex(pIdx) ) continue; for(i=0; inKeyCol; i++){ - i16 iCol = pIdx->aiColumn[i]; - if( 0==findTerm(pWC, iBase, iCol, ~(Bitmask)0, WO_EQ, pIdx) ){ - int iIdxCol = findIndexCol(pParse, pDistinct, iBase, pIdx, i); - if( iIdxCol<0 || pTab->aCol[iCol].notNull==0 ){ - break; - } + if( 0==sqlite3WhereFindTerm(pWC, iBase, i, ~(Bitmask)0, WO_EQ, pIdx) ){ + if( findIndexCol(pParse, pDistinct, iBase, pIdx, i)<0 ) break; + if( indexColumnNotNull(pIdx, i)==0 ) break; } } if( i==pIdx->nKeyCol ){ @@ -110363,8 +129867,50 @@ static int isDistinctRedundant( ** Estimate the logarithm of the input value to base 2. */ static LogEst estLog(LogEst N){ - LogEst x = sqlite3LogEst(N); - return x>33 ? x - 33 : 0; + return N<=10 ? 0 : sqlite3LogEst(N) - 33; +} + +/* +** Convert OP_Column opcodes to OP_Copy in previously generated code. +** +** This routine runs over generated VDBE code and translates OP_Column +** opcodes into OP_Copy when the table is being accessed via co-routine +** instead of via table lookup. +** +** If the bIncrRowid parameter is 0, then any OP_Rowid instructions on +** cursor iTabCur are transformed into OP_Null. Or, if bIncrRowid is non-zero, +** then each OP_Rowid is transformed into an instruction to increment the +** value stored in its output register. +*/ +static void translateColumnToCopy( + Vdbe *v, /* The VDBE containing code to translate */ + int iStart, /* Translate from this opcode to the end */ + int iTabCur, /* OP_Column/OP_Rowid references to this table */ + int iRegister, /* The first column is in this register */ + int bIncrRowid /* If non-zero, transform OP_rowid to OP_AddImm(1) */ +){ + VdbeOp *pOp = sqlite3VdbeGetOp(v, iStart); + int iEnd = sqlite3VdbeCurrentAddr(v); + for(; iStartp1!=iTabCur ) continue; + if( pOp->opcode==OP_Column ){ + pOp->opcode = OP_Copy; + pOp->p1 = pOp->p2 + iRegister; + pOp->p2 = pOp->p3; + pOp->p3 = 0; + }else if( pOp->opcode==OP_Rowid ){ + if( bIncrRowid ){ + /* Increment the value stored in the P2 operand of the OP_Rowid. */ + pOp->opcode = OP_AddImm; + pOp->p1 = pOp->p2; + pOp->p2 = 1; + }else{ + pOp->opcode = OP_Null; + pOp->p1 = 0; + pOp->p3 = 0; + } + } + } } /* @@ -110425,11 +129971,12 @@ static int termCanDriveIndex( ){ char aff; if( pTerm->leftCursor!=pSrc->iCursor ) return 0; - if( (pTerm->eOperator & WO_EQ)==0 ) return 0; + if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) return 0; if( (pTerm->prereqRight & notReady)!=0 ) return 0; if( pTerm->u.leftColumn<0 ) return 0; aff = pSrc->pTab->aCol[pTerm->u.leftColumn].affinity; if( !sqlite3IndexAffinityOk(pTerm->pExpr, aff) ) return 0; + testcase( pTerm->pExpr->op==TK_IS ); return 1; } #endif @@ -110466,12 +130013,17 @@ static void constructAutomaticIndex( Bitmask idxCols; /* Bitmap of columns used for indexing */ Bitmask extraCols; /* Bitmap of additional columns */ u8 sentWarning = 0; /* True if a warnning has been issued */ + Expr *pPartial = 0; /* Partial Index Expression */ + int iContinue = 0; /* Jump here to skip excluded rows */ + struct SrcList_item *pTabItem; /* FROM clause term being indexed */ + int addrCounter = 0; /* Address where integer counter is initialized */ + int regBase; /* Array of registers where record is assembled */ /* Generate code to skip over the creation and initialization of the ** transient index on 2nd and subsequent iterations of the loop. */ v = pParse->pVdbe; assert( v!=0 ); - addrInit = sqlite3CodeOnce(pParse); + addrInit = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v); /* Count the number of columns that will be added to the index ** and used to match WHERE clause constraints */ @@ -110481,6 +130033,17 @@ static void constructAutomaticIndex( pLoop = pLevel->pWLoop; idxCols = 0; for(pTerm=pWC->a; pTermpExpr; + assert( !ExprHasProperty(pExpr, EP_FromJoin) /* prereq always non-zero */ + || pExpr->iRightJoinTable!=pSrc->iCursor /* for the right-hand */ + || pLoop->prereq!=0 ); /* table of a LEFT JOIN */ + if( pLoop->prereq==0 + && (pTerm->wtFlags & TERM_VIRTUAL)==0 + && !ExprHasProperty(pExpr, EP_FromJoin) + && sqlite3ExprIsTableConstant(pExpr, pSrc->iCursor) ){ + pPartial = sqlite3ExprAnd(pParse->db, pPartial, + sqlite3ExprDup(pParse->db, pExpr, 0)); + } if( termCanDriveIndex(pTerm, pSrc, notReady) ){ int iCol = pTerm->u.leftColumn; Bitmask cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol); @@ -110493,7 +130056,9 @@ static void constructAutomaticIndex( sentWarning = 1; } if( (idxCols & cMask)==0 ){ - if( whereLoopResize(pParse->db, pLoop, nKeyCol+1) ) return; + if( whereLoopResize(pParse->db, pLoop, nKeyCol+1) ){ + goto end_auto_index_create; + } pLoop->aLTerm[nKeyCol++] = pTerm; idxCols |= cMask; } @@ -110513,7 +130078,7 @@ static void constructAutomaticIndex( ** if they go out of sync. */ extraCols = pSrc->colUsed & (~idxCols | MASKBIT(BMS-1)); - mxBitCol = (pTable->nCol >= BMS-1) ? BMS-1 : pTable->nCol; + mxBitCol = MIN(BMS-1,pTable->nCol); testcase( pTable->nCol==BMS-1 ); testcase( pTable->nCol==BMS-2 ); for(i=0; icolUsed & MASKBIT(BMS-1) ){ nKeyCol += pTable->nCol - BMS + 1; } - pLoop->wsFlags |= WHERE_COLUMN_EQ | WHERE_IDX_ONLY; /* Construct the Index object to describe this index */ pIdx = sqlite3AllocateIndexObject(pParse->db, nKeyCol+1, 0, &zNotUsed); - if( pIdx==0 ) return; + if( pIdx==0 ) goto end_auto_index_create; pLoop->u.btree.pIndex = pIdx; pIdx->zName = "auto-index"; pIdx->pTable = pTable; @@ -110543,7 +130107,7 @@ static void constructAutomaticIndex( idxCols |= cMask; pIdx->aiColumn[n] = pTerm->u.leftColumn; pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight); - pIdx->azColl[n] = ALWAYS(pColl) ? pColl->zName : "BINARY"; + pIdx->azColl[n] = pColl ? pColl->zName : sqlite3StrBINARY; n++; } } @@ -110555,20 +130119,20 @@ static void constructAutomaticIndex( for(i=0; iaiColumn[n] = i; - pIdx->azColl[n] = "BINARY"; + pIdx->azColl[n] = sqlite3StrBINARY; n++; } } if( pSrc->colUsed & MASKBIT(BMS-1) ){ for(i=BMS-1; inCol; i++){ pIdx->aiColumn[n] = i; - pIdx->azColl[n] = "BINARY"; + pIdx->azColl[n] = sqlite3StrBINARY; n++; } } assert( n==nKeyCol ); - pIdx->aiColumn[n] = -1; - pIdx->azColl[n] = "BINARY"; + pIdx->aiColumn[n] = XN_ROWID; + pIdx->azColl[n] = sqlite3StrBINARY; /* Create the automatic index */ assert( pLevel->iIdxCur>=0 ); @@ -110578,18 +130142,48 @@ static void constructAutomaticIndex( VdbeComment((v, "for %s", pTable->zName)); /* Fill the automatic index with content */ - addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, pLevel->iTabCur); + sqlite3ExprCachePush(pParse); + pTabItem = &pWC->pWInfo->pTabList->a[pLevel->iFrom]; + if( pTabItem->fg.viaCoroutine ){ + int regYield = pTabItem->regReturn; + addrCounter = sqlite3VdbeAddOp2(v, OP_Integer, 0, 0); + sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); + addrTop = sqlite3VdbeAddOp1(v, OP_Yield, regYield); + VdbeCoverage(v); + VdbeComment((v, "next row of \"%s\"", pTabItem->pTab->zName)); + }else{ + addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, pLevel->iTabCur); VdbeCoverage(v); + } + if( pPartial ){ + iContinue = sqlite3VdbeMakeLabel(v); + sqlite3ExprIfFalse(pParse, pPartial, iContinue, SQLITE_JUMPIFNULL); + pLoop->wsFlags |= WHERE_PARTIALIDX; + } regRecord = sqlite3GetTempReg(pParse); - sqlite3GenerateIndexKey(pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0); + regBase = sqlite3GenerateIndexKey( + pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0 + ); sqlite3VdbeAddOp2(v, OP_IdxInsert, pLevel->iIdxCur, regRecord); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); - sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); + if( pPartial ) sqlite3VdbeResolveLabel(v, iContinue); + if( pTabItem->fg.viaCoroutine ){ + sqlite3VdbeChangeP2(v, addrCounter, regBase+n); + translateColumnToCopy(v, addrTop, pLevel->iTabCur, pTabItem->regResult, 1); + sqlite3VdbeGoto(v, addrTop); + pTabItem->fg.viaCoroutine = 0; + }else{ + sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); VdbeCoverage(v); + } sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX); sqlite3VdbeJumpHere(v, addrTop); sqlite3ReleaseTempReg(pParse, regRecord); + sqlite3ExprCachePop(pParse); /* Jump here when skipping the initialization */ sqlite3VdbeJumpHere(v, addrInit); + +end_auto_index_create: + sqlite3ExprDelete(pParse->db, pPartial); } #endif /* SQLITE_OMIT_AUTOMATIC_INDEX */ @@ -110602,8 +130196,10 @@ static void constructAutomaticIndex( static sqlite3_index_info *allocateIndexInfo( Parse *pParse, WhereClause *pWC, + Bitmask mUnusable, /* Ignore terms with these prereqs */ struct SrcList_item *pSrc, - ExprList *pOrderBy + ExprList *pOrderBy, + u16 *pmNoOmit /* Mask of terms not to omit */ ){ int i, j; int nTerm; @@ -110613,17 +130209,21 @@ static sqlite3_index_info *allocateIndexInfo( WhereTerm *pTerm; int nOrderBy; sqlite3_index_info *pIdxInfo; + u16 mNoOmit = 0; /* Count the number of possible WHERE clause constraints referring ** to this virtual table */ for(i=nTerm=0, pTerm=pWC->a; inTerm; i++, pTerm++){ if( pTerm->leftCursor != pSrc->iCursor ) continue; + if( pTerm->prereqRight & mUnusable ) continue; assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) ); testcase( pTerm->eOperator & WO_IN ); testcase( pTerm->eOperator & WO_ISNULL ); + testcase( pTerm->eOperator & WO_IS ); testcase( pTerm->eOperator & WO_ALL ); - if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV))==0 ) continue; + if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue; if( pTerm->wtFlags & TERM_VNULL ) continue; + assert( pTerm->u.leftColumn>=(-1) ); nTerm++; } @@ -110671,16 +130271,22 @@ static sqlite3_index_info *allocateIndexInfo( for(i=j=0, pTerm=pWC->a; inTerm; i++, pTerm++){ u8 op; if( pTerm->leftCursor != pSrc->iCursor ) continue; + if( pTerm->prereqRight & mUnusable ) continue; assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) ); testcase( pTerm->eOperator & WO_IN ); + testcase( pTerm->eOperator & WO_IS ); testcase( pTerm->eOperator & WO_ISNULL ); testcase( pTerm->eOperator & WO_ALL ); - if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV))==0 ) continue; + if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue; if( pTerm->wtFlags & TERM_VNULL ) continue; + assert( pTerm->u.leftColumn>=(-1) ); pIdxCons[j].iColumn = pTerm->u.leftColumn; pIdxCons[j].iTermOffset = i; op = (u8)pTerm->eOperator & WO_ALL; if( op==WO_IN ) op = WO_EQ; + if( op==WO_MATCH ){ + op = pTerm->eMatchOp; + } pIdxCons[j].op = op; /* The direct assignment in the previous line is possible only because ** the WO_ and SQLITE_INDEX_CONSTRAINT_ codes are identical. The @@ -110692,6 +130298,15 @@ static sqlite3_index_info *allocateIndexInfo( assert( WO_GE==SQLITE_INDEX_CONSTRAINT_GE ); assert( WO_MATCH==SQLITE_INDEX_CONSTRAINT_MATCH ); assert( pTerm->eOperator & (WO_IN|WO_EQ|WO_LT|WO_LE|WO_GT|WO_GE|WO_MATCH) ); + + if( op & (WO_LT|WO_LE|WO_GT|WO_GE) + && sqlite3ExprIsVector(pTerm->pExpr->pRight) + ){ + if( i<16 ) mNoOmit |= (1 << i); + if( op==WO_LT ) pIdxCons[j].op = WO_LE; + if( op==WO_GT ) pIdxCons[j].op = WO_GE; + } + j++; } for(i=0; ia[i].sortOrder; } + *pmNoOmit = mNoOmit; return pIdxInfo; } @@ -110719,7 +130335,6 @@ static sqlite3_index_info *allocateIndexInfo( */ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ sqlite3_vtab *pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab; - int i; int rc; TRACE_IDX_INPUTS(p); @@ -110728,7 +130343,7 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ if( rc!=SQLITE_OK ){ if( rc==SQLITE_NOMEM ){ - pParse->db->mallocFailed = 1; + sqlite3OomFault(pParse->db); }else if( !pVtab->zErrMsg ){ sqlite3ErrorMsg(pParse, "%s", sqlite3ErrStr(rc)); }else{ @@ -110738,29 +130353,36 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){ sqlite3_free(pVtab->zErrMsg); pVtab->zErrMsg = 0; +#if 0 + /* This error is now caught by the caller. + ** Search for "xBestIndex malfunction" below */ for(i=0; inConstraint; i++){ if( !p->aConstraint[i].usable && p->aConstraintUsage[i].argvIndex>0 ){ sqlite3ErrorMsg(pParse, "table %s: xBestIndex returned an invalid plan", pTab->zName); } } +#endif return pParse->nErr; } #endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */ - #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 /* ** Estimate the location of a particular key among all keys in an ** index. Store the results in aStat as follows: ** -** aStat[0] Est. number of rows less than pVal -** aStat[1] Est. number of rows equal to pVal +** aStat[0] Est. number of rows less than pRec +** aStat[1] Est. number of rows equal to pRec ** -** Return SQLITE_OK on success. +** Return the index of the sample that is the smallest sample that +** is greater than or equal to pRec. Note that this index is not an index +** into the aSample[] array - it is an index into a virtual set of samples +** based on the contents of aSample[] and the number of fields in record +** pRec. */ -static void whereKeyStats( +static int whereKeyStats( Parse *pParse, /* Database connection */ Index *pIdx, /* Index to consider domain of */ UnpackedRecord *pRec, /* Vector of values to consider */ @@ -110769,66 +130391,158 @@ static void whereKeyStats( ){ IndexSample *aSample = pIdx->aSample; int iCol; /* Index of required stats in anEq[] etc. */ + int i; /* Index of first sample >= pRec */ + int iSample; /* Smallest sample larger than or equal to pRec */ int iMin = 0; /* Smallest sample not yet tested */ - int i = pIdx->nSample; /* Smallest sample larger than or equal to pRec */ int iTest; /* Next sample to test */ int res; /* Result of comparison operation */ + int nField; /* Number of fields in pRec */ + tRowcnt iLower = 0; /* anLt[] + anEq[] of largest sample pRec is > */ #ifndef SQLITE_DEBUG UNUSED_PARAMETER( pParse ); #endif assert( pRec!=0 ); - iCol = pRec->nField - 1; assert( pIdx->nSample>0 ); - assert( pRec->nField>0 && iColnSampleCol ); + assert( pRec->nField>0 && pRec->nField<=pIdx->nSampleCol ); + + /* Do a binary search to find the first sample greater than or equal + ** to pRec. If pRec contains a single field, the set of samples to search + ** is simply the aSample[] array. If the samples in aSample[] contain more + ** than one fields, all fields following the first are ignored. + ** + ** If pRec contains N fields, where N is more than one, then as well as the + ** samples in aSample[] (truncated to N fields), the search also has to + ** consider prefixes of those samples. For example, if the set of samples + ** in aSample is: + ** + ** aSample[0] = (a, 5) + ** aSample[1] = (a, 10) + ** aSample[2] = (b, 5) + ** aSample[3] = (c, 100) + ** aSample[4] = (c, 105) + ** + ** Then the search space should ideally be the samples above and the + ** unique prefixes [a], [b] and [c]. But since that is hard to organize, + ** the code actually searches this set: + ** + ** 0: (a) + ** 1: (a, 5) + ** 2: (a, 10) + ** 3: (a, 10) + ** 4: (b) + ** 5: (b, 5) + ** 6: (c) + ** 7: (c, 100) + ** 8: (c, 105) + ** 9: (c, 105) + ** + ** For each sample in the aSample[] array, N samples are present in the + ** effective sample array. In the above, samples 0 and 1 are based on + ** sample aSample[0]. Samples 2 and 3 on aSample[1] etc. + ** + ** Often, sample i of each block of N effective samples has (i+1) fields. + ** Except, each sample may be extended to ensure that it is greater than or + ** equal to the previous sample in the array. For example, in the above, + ** sample 2 is the first sample of a block of N samples, so at first it + ** appears that it should be 1 field in size. However, that would make it + ** smaller than sample 1, so the binary search would not work. As a result, + ** it is extended to two fields. The duplicates that this creates do not + ** cause any problems. + */ + nField = pRec->nField; + iCol = 0; + iSample = pIdx->nSample * nField; do{ - iTest = (iMin+i)/2; - res = sqlite3VdbeRecordCompare(aSample[iTest].n, aSample[iTest].p, pRec); - if( res<0 ){ - iMin = iTest+1; + int iSamp; /* Index in aSample[] of test sample */ + int n; /* Number of fields in test sample */ + + iTest = (iMin+iSample)/2; + iSamp = iTest / nField; + if( iSamp>0 ){ + /* The proposed effective sample is a prefix of sample aSample[iSamp]. + ** Specifically, the shortest prefix of at least (1 + iTest%nField) + ** fields that is greater than the previous effective sample. */ + for(n=(iTest % nField) + 1; nnField = n; + res = sqlite3VdbeRecordCompare(aSample[iSamp].n, aSample[iSamp].p, pRec); + if( res<0 ){ + iLower = aSample[iSamp].anLt[n-1] + aSample[iSamp].anEq[n-1]; + iMin = iTest+1; + }else if( res==0 && nnSample ); - assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec) - || pParse->db->mallocFailed ); - }else{ - /* Otherwise, pRec must be smaller than sample $i and larger than - ** sample ($i-1). */ - assert( i==pIdx->nSample - || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0 - || pParse->db->mallocFailed ); - assert( i==0 - || sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0 - || pParse->db->mallocFailed ); + if( pParse->db->mallocFailed==0 ){ + if( res==0 ){ + /* If (res==0) is true, then pRec must be equal to sample i. */ + assert( inSample ); + assert( iCol==nField-1 ); + pRec->nField = nField; + assert( 0==sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec) + || pParse->db->mallocFailed + ); + }else{ + /* Unless i==pIdx->nSample, indicating that pRec is larger than + ** all samples in the aSample[] array, pRec must be smaller than the + ** (iCol+1) field prefix of sample i. */ + assert( i<=pIdx->nSample && i>=0 ); + pRec->nField = iCol+1; + assert( i==pIdx->nSample + || sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)>0 + || pParse->db->mallocFailed ); + + /* if i==0 and iCol==0, then record pRec is smaller than all samples + ** in the aSample[] array. Otherwise, if (iCol>0) then pRec must + ** be greater than or equal to the (iCol) field prefix of sample i. + ** If (i>0), then pRec must also be greater than sample (i-1). */ + if( iCol>0 ){ + pRec->nField = iCol; + assert( sqlite3VdbeRecordCompare(aSample[i].n, aSample[i].p, pRec)<=0 + || pParse->db->mallocFailed ); + } + if( i>0 ){ + pRec->nField = nField; + assert( sqlite3VdbeRecordCompare(aSample[i-1].n, aSample[i-1].p, pRec)<0 + || pParse->db->mallocFailed ); + } + } } #endif /* ifdef SQLITE_DEBUG */ - /* At this point, aSample[i] is the first sample that is greater than - ** or equal to pVal. Or if i==pIdx->nSample, then all samples are less - ** than pVal. If aSample[i]==pVal, then res==0. - */ if( res==0 ){ + /* Record pRec is equal to sample i */ + assert( iCol==nField-1 ); aStat[0] = aSample[i].anLt[iCol]; aStat[1] = aSample[i].anEq[iCol]; }else{ - tRowcnt iLower, iUpper, iGap; - if( i==0 ){ - iLower = 0; - iUpper = aSample[0].anLt[iCol]; + /* At this point, the (iCol+1) field prefix of aSample[i] is the first + ** sample that is greater than pRec. Or, if i==pIdx->nSample then pRec + ** is larger than all samples in the array. */ + tRowcnt iUpper, iGap; + if( i>=pIdx->nSample ){ + iUpper = sqlite3LogEstToInt(pIdx->aiRowLogEst[0]); }else{ - iUpper = i>=pIdx->nSample ? pIdx->aiRowEst[0] : aSample[i].anLt[iCol]; - iLower = aSample[i-1].anEq[iCol] + aSample[i-1].anLt[iCol]; + iUpper = aSample[i].anLt[iCol]; } - aStat[1] = (pIdx->nKeyCol>iCol ? pIdx->aAvgEq[iCol] : 1); + if( iLower>=iUpper ){ iGap = 0; }else{ @@ -110840,7 +130554,158 @@ static void whereKeyStats( iGap = iGap/3; } aStat[0] = iLower + iGap; + aStat[1] = pIdx->aAvgEq[iCol]; } + + /* Restore the pRec->nField value before returning. */ + pRec->nField = nField; + return i; +} +#endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ + +/* +** If it is not NULL, pTerm is a term that provides an upper or lower +** bound on a range scan. Without considering pTerm, it is estimated +** that the scan will visit nNew rows. This function returns the number +** estimated to be visited after taking pTerm into account. +** +** If the user explicitly specified a likelihood() value for this term, +** then the return value is the likelihood multiplied by the number of +** input rows. Otherwise, this function assumes that an "IS NOT NULL" term +** has a likelihood of 0.50, and any other term a likelihood of 0.25. +*/ +static LogEst whereRangeAdjust(WhereTerm *pTerm, LogEst nNew){ + LogEst nRet = nNew; + if( pTerm ){ + if( pTerm->truthProb<=0 ){ + nRet += pTerm->truthProb; + }else if( (pTerm->wtFlags & TERM_VNULL)==0 ){ + nRet -= 20; assert( 20==sqlite3LogEst(4) ); + } + } + return nRet; +} + + +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +/* +** Return the affinity for a single column of an index. +*/ +SQLITE_PRIVATE char sqlite3IndexColumnAffinity(sqlite3 *db, Index *pIdx, int iCol){ + assert( iCol>=0 && iColnColumn ); + if( !pIdx->zColAff ){ + if( sqlite3IndexAffinityStr(db, pIdx)==0 ) return SQLITE_AFF_BLOB; + } + return pIdx->zColAff[iCol]; +} +#endif + + +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +/* +** This function is called to estimate the number of rows visited by a +** range-scan on a skip-scan index. For example: +** +** CREATE INDEX i1 ON t1(a, b, c); +** SELECT * FROM t1 WHERE a=? AND c BETWEEN ? AND ?; +** +** Value pLoop->nOut is currently set to the estimated number of rows +** visited for scanning (a=? AND b=?). This function reduces that estimate +** by some factor to account for the (c BETWEEN ? AND ?) expression based +** on the stat4 data for the index. this scan will be peformed multiple +** times (once for each (a,b) combination that matches a=?) is dealt with +** by the caller. +** +** It does this by scanning through all stat4 samples, comparing values +** extracted from pLower and pUpper with the corresponding column in each +** sample. If L and U are the number of samples found to be less than or +** equal to the values extracted from pLower and pUpper respectively, and +** N is the total number of samples, the pLoop->nOut value is adjusted +** as follows: +** +** nOut = nOut * ( min(U - L, 1) / N ) +** +** If pLower is NULL, or a value cannot be extracted from the term, L is +** set to zero. If pUpper is NULL, or a value cannot be extracted from it, +** U is set to N. +** +** Normally, this function sets *pbDone to 1 before returning. However, +** if no value can be extracted from either pLower or pUpper (and so the +** estimate of the number of rows delivered remains unchanged), *pbDone +** is left as is. +** +** If an error occurs, an SQLite error code is returned. Otherwise, +** SQLITE_OK. +*/ +static int whereRangeSkipScanEst( + Parse *pParse, /* Parsing & code generating context */ + WhereTerm *pLower, /* Lower bound on the range. ex: "x>123" Might be NULL */ + WhereTerm *pUpper, /* Upper bound on the range. ex: "x<455" Might be NULL */ + WhereLoop *pLoop, /* Update the .nOut value of this loop */ + int *pbDone /* Set to true if at least one expr. value extracted */ +){ + Index *p = pLoop->u.btree.pIndex; + int nEq = pLoop->u.btree.nEq; + sqlite3 *db = pParse->db; + int nLower = -1; + int nUpper = p->nSample+1; + int rc = SQLITE_OK; + u8 aff = sqlite3IndexColumnAffinity(db, p, nEq); + CollSeq *pColl; + + sqlite3_value *p1 = 0; /* Value extracted from pLower */ + sqlite3_value *p2 = 0; /* Value extracted from pUpper */ + sqlite3_value *pVal = 0; /* Value extracted from record */ + + pColl = sqlite3LocateCollSeq(pParse, p->azColl[nEq]); + if( pLower ){ + rc = sqlite3Stat4ValueFromExpr(pParse, pLower->pExpr->pRight, aff, &p1); + nLower = 0; + } + if( pUpper && rc==SQLITE_OK ){ + rc = sqlite3Stat4ValueFromExpr(pParse, pUpper->pExpr->pRight, aff, &p2); + nUpper = p2 ? 0 : p->nSample; + } + + if( p1 || p2 ){ + int i; + int nDiff; + for(i=0; rc==SQLITE_OK && inSample; i++){ + rc = sqlite3Stat4Column(db, p->aSample[i].p, p->aSample[i].n, nEq, &pVal); + if( rc==SQLITE_OK && p1 ){ + int res = sqlite3MemCompare(p1, pVal, pColl); + if( res>=0 ) nLower++; + } + if( rc==SQLITE_OK && p2 ){ + int res = sqlite3MemCompare(p2, pVal, pColl); + if( res>=0 ) nUpper++; + } + } + nDiff = (nUpper - nLower); + if( nDiff<=0 ) nDiff = 1; + + /* If there is both an upper and lower bound specified, and the + ** comparisons indicate that they are close together, use the fallback + ** method (assume that the scan visits 1/64 of the rows) for estimating + ** the number of rows visited. Otherwise, estimate the number of rows + ** using the method described in the header comment for this function. */ + if( nDiff!=1 || pUpper==0 || pLower==0 ){ + int nAdjust = (sqlite3LogEst(p->nSample) - sqlite3LogEst(nDiff)); + pLoop->nOut -= nAdjust; + *pbDone = 1; + WHERETRACE(0x10, ("range skip-scan regions: %u..%u adjust=%d est=%d\n", + nLower, nUpper, nAdjust*-1, pLoop->nOut)); + } + + }else{ + assert( *pbDone==0 ); + } + + sqlite3ValueFree(p1); + sqlite3ValueFree(p2); + sqlite3ValueFree(pVal); + + return rc; } #endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ @@ -110859,7 +130724,7 @@ static void whereKeyStats( ** If either of the upper or lower bound is not present, then NULL is passed in ** place of the corresponding WhereTerm. ** -** The value in (pBuilder->pNew->u.btree.nEq) is the index of the index +** The value in (pBuilder->pNew->u.btree.nEq) is the number of the index ** column subject to the range constraint. Or, equivalently, the number of ** equality constraints optimized by the proposed index scan. For example, ** assuming index p is on t1(a, b), and the SQL query is: @@ -110875,14 +130740,14 @@ static void whereKeyStats( ** ** When this function is called, *pnOut is set to the sqlite3LogEst() of the ** number of rows that the index scan is expected to visit without -** considering the range constraints. If nEq is 0, this is the number of +** considering the range constraints. If nEq is 0, then *pnOut is the number of ** rows in the index. Assuming no error occurs, *pnOut is adjusted (reduced) -** to account for the range contraints pLower and pUpper. +** to account for the range constraints pLower and pUpper. ** ** In the absence of sqlite_stat4 ANALYZE data, or if such data cannot be -** used, each range inequality reduces the search space by a factor of 4. -** Hence a pair of constraints (x>? AND x? AND xu.btree.pIndex; int nEq = pLoop->u.btree.nEq; - if( p->nSample>0 - && nEq==pBuilder->nRecValid - && nEqnSampleCol - && OptimizationEnabled(pParse->db, SQLITE_Stat3) - ){ - UnpackedRecord *pRec = pBuilder->pRec; - tRowcnt a[2]; - u8 aff; + if( p->nSample>0 && nEqnSampleCol ){ + if( nEq==pBuilder->nRecValid ){ + UnpackedRecord *pRec = pBuilder->pRec; + tRowcnt a[2]; + int nBtm = pLoop->u.btree.nBtm; + int nTop = pLoop->u.btree.nTop; - /* Variable iLower will be set to the estimate of the number of rows in - ** the index that are less than the lower bound of the range query. The - ** lower bound being the concatenation of $P and $L, where $P is the - ** key-prefix formed by the nEq values matched against the nEq left-most - ** columns of the index, and $L is the value in pLower. - ** - ** Or, if pLower is NULL or $L cannot be extracted from it (because it - ** is not a simple variable or literal value), the lower bound of the - ** range is $P. Due to a quirk in the way whereKeyStats() works, even - ** if $L is available, whereKeyStats() is called for both ($P) and - ** ($P:$L) and the larger of the two returned values used. - ** - ** Similarly, iUpper is to be set to the estimate of the number of rows - ** less than the upper bound of the range query. Where the upper bound - ** is either ($P) or ($P:$U). Again, even if $U is available, both values - ** of iUpper are requested of whereKeyStats() and the smaller used. - */ - tRowcnt iLower; - tRowcnt iUpper; + /* Variable iLower will be set to the estimate of the number of rows in + ** the index that are less than the lower bound of the range query. The + ** lower bound being the concatenation of $P and $L, where $P is the + ** key-prefix formed by the nEq values matched against the nEq left-most + ** columns of the index, and $L is the value in pLower. + ** + ** Or, if pLower is NULL or $L cannot be extracted from it (because it + ** is not a simple variable or literal value), the lower bound of the + ** range is $P. Due to a quirk in the way whereKeyStats() works, even + ** if $L is available, whereKeyStats() is called for both ($P) and + ** ($P:$L) and the larger of the two returned values is used. + ** + ** Similarly, iUpper is to be set to the estimate of the number of rows + ** less than the upper bound of the range query. Where the upper bound + ** is either ($P) or ($P:$U). Again, even if $U is available, both values + ** of iUpper are requested of whereKeyStats() and the smaller used. + ** + ** The number of rows between the two bounds is then just iUpper-iLower. + */ + tRowcnt iLower; /* Rows less than the lower bound */ + tRowcnt iUpper; /* Rows less than the upper bound */ + int iLwrIdx = -2; /* aSample[] for the lower bound */ + int iUprIdx = -1; /* aSample[] for the upper bound */ - if( nEq==p->nKeyCol ){ - aff = SQLITE_AFF_INTEGER; - }else{ - aff = p->pTable->aCol[p->aiColumn[nEq]].affinity; - } - /* Determine iLower and iUpper using ($P) only. */ - if( nEq==0 ){ - iLower = 0; - iUpper = p->aiRowEst[0]; - }else{ - /* Note: this call could be optimized away - since the same values must - ** have been requested when testing key $P in whereEqualScanEst(). */ - whereKeyStats(pParse, p, pRec, 0, a); - iLower = a[0]; - iUpper = a[0] + a[1]; - } - - /* If possible, improve on the iLower estimate using ($P:$L). */ - if( pLower ){ - int bOk; /* True if value is extracted from pExpr */ - Expr *pExpr = pLower->pExpr->pRight; - assert( (pLower->eOperator & (WO_GT|WO_GE))!=0 ); - rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq, &bOk); - if( rc==SQLITE_OK && bOk ){ - tRowcnt iNew; - whereKeyStats(pParse, p, pRec, 0, a); - iNew = a[0] + ((pLower->eOperator & WO_GT) ? a[1] : 0); - if( iNew>iLower ) iLower = iNew; - nOut--; + if( pRec ){ + testcase( pRec->nField!=pBuilder->nRecValid ); + pRec->nField = pBuilder->nRecValid; } - } - - /* If possible, improve on the iUpper estimate using ($P:$U). */ - if( pUpper ){ - int bOk; /* True if value is extracted from pExpr */ - Expr *pExpr = pUpper->pExpr->pRight; - assert( (pUpper->eOperator & (WO_LT|WO_LE))!=0 ); - rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq, &bOk); - if( rc==SQLITE_OK && bOk ){ - tRowcnt iNew; - whereKeyStats(pParse, p, pRec, 1, a); - iNew = a[0] + ((pUpper->eOperator & WO_LE) ? a[1] : 0); - if( iNewpRec = pRec; - if( rc==SQLITE_OK ){ - if( iUpper>iLower ){ - nNew = sqlite3LogEst(iUpper - iLower); + /* Determine iLower and iUpper using ($P) only. */ + if( nEq==0 ){ + iLower = 0; + iUpper = p->nRowEst0; }else{ - nNew = 10; assert( 10==sqlite3LogEst(2) ); + /* Note: this call could be optimized away - since the same values must + ** have been requested when testing key $P in whereEqualScanEst(). */ + whereKeyStats(pParse, p, pRec, 0, a); + iLower = a[0]; + iUpper = a[0] + a[1]; } - if( nNeweOperator & (WO_GT|WO_GE))!=0 ); + assert( pUpper==0 || (pUpper->eOperator & (WO_LT|WO_LE))!=0 ); + assert( p->aSortOrder!=0 ); + if( p->aSortOrder[nEq] ){ + /* The roles of pLower and pUpper are swapped for a DESC index */ + SWAP(WhereTerm*, pLower, pUpper); + SWAP(int, nBtm, nTop); } - pLoop->nOut = (LogEst)nOut; - WHERETRACE(0x10, ("range scan regions: %u..%u est=%d\n", - (u32)iLower, (u32)iUpper, nOut)); - return SQLITE_OK; + + /* If possible, improve on the iLower estimate using ($P:$L). */ + if( pLower ){ + int n; /* Values extracted from pExpr */ + Expr *pExpr = pLower->pExpr->pRight; + rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, nBtm, nEq, &n); + if( rc==SQLITE_OK && n ){ + tRowcnt iNew; + u16 mask = WO_GT|WO_LE; + if( sqlite3ExprVectorSize(pExpr)>n ) mask = (WO_LE|WO_LT); + iLwrIdx = whereKeyStats(pParse, p, pRec, 0, a); + iNew = a[0] + ((pLower->eOperator & mask) ? a[1] : 0); + if( iNew>iLower ) iLower = iNew; + nOut--; + pLower = 0; + } + } + + /* If possible, improve on the iUpper estimate using ($P:$U). */ + if( pUpper ){ + int n; /* Values extracted from pExpr */ + Expr *pExpr = pUpper->pExpr->pRight; + rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, nTop, nEq, &n); + if( rc==SQLITE_OK && n ){ + tRowcnt iNew; + u16 mask = WO_GT|WO_LE; + if( sqlite3ExprVectorSize(pExpr)>n ) mask = (WO_LE|WO_LT); + iUprIdx = whereKeyStats(pParse, p, pRec, 1, a); + iNew = a[0] + ((pUpper->eOperator & mask) ? a[1] : 0); + if( iNewpRec = pRec; + if( rc==SQLITE_OK ){ + if( iUpper>iLower ){ + nNew = sqlite3LogEst(iUpper - iLower); + /* TUNING: If both iUpper and iLower are derived from the same + ** sample, then assume they are 4x more selective. This brings + ** the estimated selectivity more in line with what it would be + ** if estimated without the use of STAT3/4 tables. */ + if( iLwrIdx==iUprIdx ) nNew -= 20; assert( 20==sqlite3LogEst(4) ); + }else{ + nNew = 10; assert( 10==sqlite3LogEst(2) ); + } + if( nNewwtFlags & TERM_VNULL)==0 ){ - nNew -= 20; assert( 20==sqlite3LogEst(4) ); - nOut--; - } - if( pUpper ){ - nNew -= 20; assert( 20==sqlite3LogEst(4) ); - nOut--; +#endif + assert( pUpper==0 || (pUpper->wtFlags & TERM_VNULL)==0 ); + nNew = whereRangeAdjust(pLower, nOut); + nNew = whereRangeAdjust(pUpper, nNew); + + /* TUNING: If there is both an upper and lower limit and neither limit + ** has an application-defined likelihood(), assume the range is + ** reduced by an additional 75%. This means that, by default, an open-ended + ** range query (e.g. col > ?) is assumed to match 1/4 of the rows in the + ** index. While a closed range (e.g. col BETWEEN ? AND ?) is estimated to + ** match 1/64 of the index. */ + if( pLower && pLower->truthProb>0 && pUpper && pUpper->truthProb>0 ){ + nNew -= 20; } + + nOut -= (pLower!=0) + (pUpper!=0); if( nNew<10 ) nNew = 10; if( nNewnOut>nOut ){ + WHERETRACE(0x10,("Range scan lowers nOut from %d to %d\n", + pLoop->nOut, nOut)); + } +#endif pLoop->nOut = (LogEst)nOut; return rc; } @@ -111040,13 +130937,12 @@ static int whereEqualScanEst( Index *p = pBuilder->pNew->u.btree.pIndex; int nEq = pBuilder->pNew->u.btree.nEq; UnpackedRecord *pRec = pBuilder->pRec; - u8 aff; /* Column affinity */ int rc; /* Subfunction return code */ tRowcnt a[2]; /* Statistics */ int bOk; assert( nEq>=1 ); - assert( nEq<=(p->nKeyCol+1) ); + assert( nEq<=p->nColumn ); assert( p->aSample!=0 ); assert( p->nSample>0 ); assert( pBuilder->nRecValidp->nKeyCol ){ + if( nEq>=p->nColumn ){ *pnRow = 1; return SQLITE_OK; } - aff = p->pTable->aCol[p->aiColumn[nEq-1]].affinity; - rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq-1, &bOk); + rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, 1, nEq-1, &bOk); pBuilder->pRec = pRec; if( rc!=SQLITE_OK ) return rc; if( bOk==0 ) return SQLITE_NOTFOUND; pBuilder->nRecValid = nEq; whereKeyStats(pParse, p, pRec, 0, a); - WHERETRACE(0x10,("equality scan regions: %d\n", (int)a[1])); + WHERETRACE(0x10,("equality scan regions %s(%d): %d\n", + p->zName, nEq-1, (int)a[1])); *pnRow = a[1]; return rc; @@ -111103,6 +130999,7 @@ static int whereInScanEst( tRowcnt *pnRow /* Write the revised row estimate here */ ){ Index *p = pBuilder->pNew->u.btree.pIndex; + i64 nRow0 = sqlite3LogEstToInt(p->aiRowLogEst[0]); int nRecValid = pBuilder->nRecValid; int rc = SQLITE_OK; /* Subfunction return code */ tRowcnt nEst; /* Number of rows for a single term */ @@ -111111,1286 +131008,71 @@ static int whereInScanEst( assert( p->aSample!=0 ); for(i=0; rc==SQLITE_OK && inExpr; i++){ - nEst = p->aiRowEst[0]; + nEst = nRow0; rc = whereEqualScanEst(pParse, pBuilder, pList->a[i].pExpr, &nEst); nRowEst += nEst; pBuilder->nRecValid = nRecValid; } if( rc==SQLITE_OK ){ - if( nRowEst > p->aiRowEst[0] ) nRowEst = p->aiRowEst[0]; + if( nRowEst > nRow0 ) nRowEst = nRow0; *pnRow = nRowEst; - WHERETRACE(0x10,("IN row estimate: est=%g\n", nRowEst)); + WHERETRACE(0x10,("IN row estimate: est=%d\n", nRowEst)); } assert( pBuilder->nRecValid==nRecValid ); return rc; } #endif /* SQLITE_ENABLE_STAT3_OR_STAT4 */ + +#ifdef WHERETRACE_ENABLED /* -** Disable a term in the WHERE clause. Except, do not disable the term -** if it controls a LEFT OUTER JOIN and it did not originate in the ON -** or USING clause of that join. -** -** Consider the term t2.z='ok' in the following queries: -** -** (1) SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.x WHERE t2.z='ok' -** (2) SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.x AND t2.z='ok' -** (3) SELECT * FROM t1, t2 WHERE t1.a=t2.x AND t2.z='ok' -** -** The t2.z='ok' is disabled in the in (2) because it originates -** in the ON clause. The term is disabled in (3) because it is not part -** of a LEFT OUTER JOIN. In (1), the term is not disabled. -** -** Disabling a term causes that term to not be tested in the inner loop -** of the join. Disabling is an optimization. When terms are satisfied -** by indices, we disable them to prevent redundant tests in the inner -** loop. We would get the correct results if nothing were ever disabled, -** but joins might run a little slower. The trick is to disable as much -** as we can without disabling too much. If we disabled in (1), we'd get -** the wrong answer. See ticket #813. +** Print the content of a WhereTerm object */ -static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){ - if( pTerm - && (pTerm->wtFlags & TERM_CODED)==0 - && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin)) - && (pLevel->notReady & pTerm->prereqAll)==0 - ){ - pTerm->wtFlags |= TERM_CODED; - if( pTerm->iParent>=0 ){ - WhereTerm *pOther = &pTerm->pWC->a[pTerm->iParent]; - if( (--pOther->nChild)==0 ){ - disableTerm(pLevel, pOther); - } - } - } -} - -/* -** Code an OP_Affinity opcode to apply the column affinity string zAff -** to the n registers starting at base. -** -** As an optimization, SQLITE_AFF_NONE entries (which are no-ops) at the -** beginning and end of zAff are ignored. If all entries in zAff are -** SQLITE_AFF_NONE, then no code gets generated. -** -** This routine makes its own copy of zAff so that the caller is free -** to modify zAff after this routine returns. -*/ -static void codeApplyAffinity(Parse *pParse, int base, int n, char *zAff){ - Vdbe *v = pParse->pVdbe; - if( zAff==0 ){ - assert( pParse->db->mallocFailed ); - return; - } - assert( v!=0 ); - - /* Adjust base and n to skip over SQLITE_AFF_NONE entries at the beginning - ** and end of the affinity string. - */ - while( n>0 && zAff[0]==SQLITE_AFF_NONE ){ - n--; - base++; - zAff++; - } - while( n>1 && zAff[n-1]==SQLITE_AFF_NONE ){ - n--; - } - - /* Code the OP_Affinity opcode if there is anything left to do. */ - if( n>0 ){ - sqlite3VdbeAddOp2(v, OP_Affinity, base, n); - sqlite3VdbeChangeP4(v, -1, zAff, n); - sqlite3ExprCacheAffinityChange(pParse, base, n); - } -} - - -/* -** Generate code for a single equality term of the WHERE clause. An equality -** term can be either X=expr or X IN (...). pTerm is the term to be -** coded. -** -** The current value for the constraint is left in register iReg. -** -** For a constraint of the form X=expr, the expression is evaluated and its -** result is left on the stack. For constraints of the form X IN (...) -** this routine sets up a loop that will iterate over all values of X. -*/ -static int codeEqualityTerm( - Parse *pParse, /* The parsing context */ - WhereTerm *pTerm, /* The term of the WHERE clause to be coded */ - WhereLevel *pLevel, /* The level of the FROM clause we are working on */ - int iEq, /* Index of the equality term within this level */ - int bRev, /* True for reverse-order IN operations */ - int iTarget /* Attempt to leave results in this register */ -){ - Expr *pX = pTerm->pExpr; - Vdbe *v = pParse->pVdbe; - int iReg; /* Register holding results */ - - assert( iTarget>0 ); - if( pX->op==TK_EQ ){ - iReg = sqlite3ExprCodeTarget(pParse, pX->pRight, iTarget); - }else if( pX->op==TK_ISNULL ){ - iReg = iTarget; - sqlite3VdbeAddOp2(v, OP_Null, 0, iReg); -#ifndef SQLITE_OMIT_SUBQUERY +static void whereTermPrint(WhereTerm *pTerm, int iTerm){ + if( pTerm==0 ){ + sqlite3DebugPrintf("TERM-%-3d NULL\n", iTerm); }else{ - int eType; - int iTab; - struct InLoop *pIn; - WhereLoop *pLoop = pLevel->pWLoop; - - if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 - && pLoop->u.btree.pIndex!=0 - && pLoop->u.btree.pIndex->aSortOrder[iEq] - ){ - testcase( iEq==0 ); - testcase( bRev ); - bRev = !bRev; - } - assert( pX->op==TK_IN ); - iReg = iTarget; - eType = sqlite3FindInIndex(pParse, pX, 0); - if( eType==IN_INDEX_INDEX_DESC ){ - testcase( bRev ); - bRev = !bRev; - } - iTab = pX->iTable; - sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iTab, 0); - assert( (pLoop->wsFlags & WHERE_MULTI_OR)==0 ); - pLoop->wsFlags |= WHERE_IN_ABLE; - if( pLevel->u.in.nIn==0 ){ - pLevel->addrNxt = sqlite3VdbeMakeLabel(v); - } - pLevel->u.in.nIn++; - pLevel->u.in.aInLoop = - sqlite3DbReallocOrFree(pParse->db, pLevel->u.in.aInLoop, - sizeof(pLevel->u.in.aInLoop[0])*pLevel->u.in.nIn); - pIn = pLevel->u.in.aInLoop; - if( pIn ){ - pIn += pLevel->u.in.nIn - 1; - pIn->iCur = iTab; - if( eType==IN_INDEX_ROWID ){ - pIn->addrInTop = sqlite3VdbeAddOp2(v, OP_Rowid, iTab, iReg); - }else{ - pIn->addrInTop = sqlite3VdbeAddOp3(v, OP_Column, iTab, 0, iReg); - } - pIn->eEndLoopOp = bRev ? OP_PrevIfOpen : OP_NextIfOpen; - sqlite3VdbeAddOp1(v, OP_IsNull, iReg); + char zType[4]; + char zLeft[50]; + memcpy(zType, "...", 4); + if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V'; + if( pTerm->eOperator & WO_EQUIV ) zType[1] = 'E'; + if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L'; + if( pTerm->eOperator & WO_SINGLE ){ + sqlite3_snprintf(sizeof(zLeft),zLeft,"left={%d:%d}", + pTerm->leftCursor, pTerm->u.leftColumn); + }else if( (pTerm->eOperator & WO_OR)!=0 && pTerm->u.pOrInfo!=0 ){ + sqlite3_snprintf(sizeof(zLeft),zLeft,"indexable=0x%lld", + pTerm->u.pOrInfo->indexable); }else{ - pLevel->u.in.nIn = 0; + sqlite3_snprintf(sizeof(zLeft),zLeft,"left=%d", pTerm->leftCursor); } + sqlite3DebugPrintf( + "TERM-%-3d %p %s %-12s prob=%-3d op=0x%03x wtFlags=0x%04x", + iTerm, pTerm, zType, zLeft, pTerm->truthProb, + pTerm->eOperator, pTerm->wtFlags); + if( pTerm->iField ){ + sqlite3DebugPrintf(" iField=%d\n", pTerm->iField); + }else{ + sqlite3DebugPrintf("\n"); + } + sqlite3TreeViewExpr(0, pTerm->pExpr, 0); + } +} #endif - } - disableTerm(pLevel, pTerm); - return iReg; -} +#ifdef WHERETRACE_ENABLED /* -** Generate code that will evaluate all == and IN constraints for an -** index scan. -** -** For example, consider table t1(a,b,c,d,e,f) with index i1(a,b,c). -** Suppose the WHERE clause is this: a==5 AND b IN (1,2,3) AND c>5 AND c<10 -** The index has as many as three equality constraints, but in this -** example, the third "c" value is an inequality. So only two -** constraints are coded. This routine will generate code to evaluate -** a==5 and b IN (1,2,3). The current values for a and b will be stored -** in consecutive registers and the index of the first register is returned. -** -** In the example above nEq==2. But this subroutine works for any value -** of nEq including 0. If nEq==0, this routine is nearly a no-op. -** The only thing it does is allocate the pLevel->iMem memory cell and -** compute the affinity string. -** -** The nExtraReg parameter is 0 or 1. It is 0 if all WHERE clause constraints -** are == or IN and are covered by the nEq. nExtraReg is 1 if there is -** an inequality constraint (such as the "c>=5 AND c<10" in the example) that -** occurs after the nEq quality constraints. -** -** This routine allocates a range of nEq+nExtraReg memory cells and returns -** the index of the first memory cell in that range. The code that -** calls this routine will use that memory range to store keys for -** start and termination conditions of the loop. -** key value of the loop. If one or more IN operators appear, then -** this routine allocates an additional nEq memory cells for internal -** use. -** -** Before returning, *pzAff is set to point to a buffer containing a -** copy of the column affinity string of the index allocated using -** sqlite3DbMalloc(). Except, entries in the copy of the string associated -** with equality constraints that use NONE affinity are set to -** SQLITE_AFF_NONE. This is to deal with SQL such as the following: -** -** CREATE TABLE t1(a TEXT PRIMARY KEY, b); -** SELECT ... FROM t1 AS t2, t1 WHERE t1.a = t2.b; -** -** In the example above, the index on t1(a) has TEXT affinity. But since -** the right hand side of the equality constraint (t2.b) has NONE affinity, -** no conversion should be attempted before using a t2.b value as part of -** a key to search the index. Hence the first byte in the returned affinity -** string in this example would be set to SQLITE_AFF_NONE. +** Show the complete content of a WhereClause */ -static int codeAllEqualityTerms( - Parse *pParse, /* Parsing context */ - WhereLevel *pLevel, /* Which nested loop of the FROM we are coding */ - int bRev, /* Reverse the order of IN operators */ - int nExtraReg, /* Number of extra registers to allocate */ - char **pzAff /* OUT: Set to point to affinity string */ -){ - u16 nEq; /* The number of == or IN constraints to code */ - u16 nSkip; /* Number of left-most columns to skip */ - Vdbe *v = pParse->pVdbe; /* The vm under construction */ - Index *pIdx; /* The index being used for this loop */ - WhereTerm *pTerm; /* A single constraint term */ - WhereLoop *pLoop; /* The WhereLoop object */ - int j; /* Loop counter */ - int regBase; /* Base register */ - int nReg; /* Number of registers to allocate */ - char *zAff; /* Affinity string to return */ - - /* This module is only called on query plans that use an index. */ - pLoop = pLevel->pWLoop; - assert( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 ); - nEq = pLoop->u.btree.nEq; - nSkip = pLoop->u.btree.nSkip; - pIdx = pLoop->u.btree.pIndex; - assert( pIdx!=0 ); - - /* Figure out how many memory cells we will need then allocate them. - */ - regBase = pParse->nMem + 1; - nReg = pLoop->u.btree.nEq + nExtraReg; - pParse->nMem += nReg; - - zAff = sqlite3DbStrDup(pParse->db, sqlite3IndexAffinityStr(v, pIdx)); - if( !zAff ){ - pParse->db->mallocFailed = 1; +SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC){ + int i; + for(i=0; inTerm; i++){ + whereTermPrint(&pWC->a[i], i); } - - if( nSkip ){ - int iIdxCur = pLevel->iIdxCur; - sqlite3VdbeAddOp1(v, (bRev?OP_Last:OP_Rewind), iIdxCur); - VdbeComment((v, "begin skip-scan on %s", pIdx->zName)); - j = sqlite3VdbeAddOp0(v, OP_Goto); - pLevel->addrSkip = sqlite3VdbeAddOp4Int(v, (bRev?OP_SeekLt:OP_SeekGt), - iIdxCur, 0, regBase, nSkip); - sqlite3VdbeJumpHere(v, j); - for(j=0; jaiColumn[j]>=0 ); - VdbeComment((v, "%s", pIdx->pTable->aCol[pIdx->aiColumn[j]].zName)); - } - } - - /* Evaluate the equality constraints - */ - assert( zAff==0 || (int)strlen(zAff)>=nEq ); - for(j=nSkip; jaLTerm[j]; - assert( pTerm!=0 ); - /* The following testcase is true for indices with redundant columns. - ** Ex: CREATE INDEX i1 ON t1(a,b,a); SELECT * FROM t1 WHERE a=0 AND b=0; */ - testcase( (pTerm->wtFlags & TERM_CODED)!=0 ); - testcase( pTerm->wtFlags & TERM_VIRTUAL ); - r1 = codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, regBase+j); - if( r1!=regBase+j ){ - if( nReg==1 ){ - sqlite3ReleaseTempReg(pParse, regBase); - regBase = r1; - }else{ - sqlite3VdbeAddOp2(v, OP_SCopy, r1, regBase+j); - } - } - testcase( pTerm->eOperator & WO_ISNULL ); - testcase( pTerm->eOperator & WO_IN ); - if( (pTerm->eOperator & (WO_ISNULL|WO_IN))==0 ){ - Expr *pRight = pTerm->pExpr->pRight; - sqlite3ExprCodeIsNullJump(v, pRight, regBase+j, pLevel->addrBrk); - if( zAff ){ - if( sqlite3CompareAffinity(pRight, zAff[j])==SQLITE_AFF_NONE ){ - zAff[j] = SQLITE_AFF_NONE; - } - if( sqlite3ExprNeedsNoAffinityChange(pRight, zAff[j]) ){ - zAff[j] = SQLITE_AFF_NONE; - } - } - } - } - *pzAff = zAff; - return regBase; } - -#ifndef SQLITE_OMIT_EXPLAIN -/* -** This routine is a helper for explainIndexRange() below -** -** pStr holds the text of an expression that we are building up one term -** at a time. This routine adds a new term to the end of the expression. -** Terms are separated by AND so add the "AND" text for second and subsequent -** terms only. -*/ -static void explainAppendTerm( - StrAccum *pStr, /* The text expression being built */ - int iTerm, /* Index of this term. First is zero */ - const char *zColumn, /* Name of the column */ - const char *zOp /* Name of the operator */ -){ - if( iTerm ) sqlite3StrAccumAppend(pStr, " AND ", 5); - sqlite3StrAccumAppendAll(pStr, zColumn); - sqlite3StrAccumAppend(pStr, zOp, 1); - sqlite3StrAccumAppend(pStr, "?", 1); -} - -/* -** Argument pLevel describes a strategy for scanning table pTab. This -** function returns a pointer to a string buffer containing a description -** of the subset of table rows scanned by the strategy in the form of an -** SQL expression. Or, if all rows are scanned, NULL is returned. -** -** For example, if the query: -** -** SELECT * FROM t1 WHERE a=1 AND b>2; -** -** is run and there is an index on (a, b), then this function returns a -** string similar to: -** -** "a=? AND b>?" -** -** The returned pointer points to memory obtained from sqlite3DbMalloc(). -** It is the responsibility of the caller to free the buffer when it is -** no longer required. -*/ -static char *explainIndexRange(sqlite3 *db, WhereLoop *pLoop, Table *pTab){ - Index *pIndex = pLoop->u.btree.pIndex; - u16 nEq = pLoop->u.btree.nEq; - u16 nSkip = pLoop->u.btree.nSkip; - int i, j; - Column *aCol = pTab->aCol; - i16 *aiColumn = pIndex->aiColumn; - StrAccum txt; - - if( nEq==0 && (pLoop->wsFlags & (WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))==0 ){ - return 0; - } - sqlite3StrAccumInit(&txt, 0, 0, SQLITE_MAX_LENGTH); - txt.db = db; - sqlite3StrAccumAppend(&txt, " (", 2); - for(i=0; inKeyCol ) ? "rowid" : aCol[aiColumn[i]].zName; - if( i>=nSkip ){ - explainAppendTerm(&txt, i, z, "="); - }else{ - if( i ) sqlite3StrAccumAppend(&txt, " AND ", 5); - sqlite3StrAccumAppend(&txt, "ANY(", 4); - sqlite3StrAccumAppendAll(&txt, z); - sqlite3StrAccumAppend(&txt, ")", 1); - } - } - - j = i; - if( pLoop->wsFlags&WHERE_BTM_LIMIT ){ - char *z = (j==pIndex->nKeyCol ) ? "rowid" : aCol[aiColumn[j]].zName; - explainAppendTerm(&txt, i++, z, ">"); - } - if( pLoop->wsFlags&WHERE_TOP_LIMIT ){ - char *z = (j==pIndex->nKeyCol ) ? "rowid" : aCol[aiColumn[j]].zName; - explainAppendTerm(&txt, i, z, "<"); - } - sqlite3StrAccumAppend(&txt, ")", 1); - return sqlite3StrAccumFinish(&txt); -} - -/* -** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN -** command. If the query being compiled is an EXPLAIN QUERY PLAN, a single -** record is added to the output to describe the table scan strategy in -** pLevel. -*/ -static void explainOneScan( - Parse *pParse, /* Parse context */ - SrcList *pTabList, /* Table list this loop refers to */ - WhereLevel *pLevel, /* Scan to write OP_Explain opcode for */ - int iLevel, /* Value for "level" column of output */ - int iFrom, /* Value for "from" column of output */ - u16 wctrlFlags /* Flags passed to sqlite3WhereBegin() */ -){ -#ifndef SQLITE_DEBUG - if( pParse->explain==2 ) #endif - { - struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom]; - Vdbe *v = pParse->pVdbe; /* VM being constructed */ - sqlite3 *db = pParse->db; /* Database handle */ - char *zMsg; /* Text to add to EQP output */ - int iId = pParse->iSelectId; /* Select id (left-most output column) */ - int isSearch; /* True for a SEARCH. False for SCAN. */ - WhereLoop *pLoop; /* The controlling WhereLoop object */ - u32 flags; /* Flags that describe this loop */ - - pLoop = pLevel->pWLoop; - flags = pLoop->wsFlags; - if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_ONETABLE_ONLY) ) return; - - isSearch = (flags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0 - || ((flags&WHERE_VIRTUALTABLE)==0 && (pLoop->u.btree.nEq>0)) - || (wctrlFlags&(WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX)); - - zMsg = sqlite3MPrintf(db, "%s", isSearch?"SEARCH":"SCAN"); - if( pItem->pSelect ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s SUBQUERY %d", zMsg,pItem->iSelectId); - }else{ - zMsg = sqlite3MAppendf(db, zMsg, "%s TABLE %s", zMsg, pItem->zName); - } - - if( pItem->zAlias ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s AS %s", zMsg, pItem->zAlias); - } - if( (flags & (WHERE_IPK|WHERE_VIRTUALTABLE))==0 - && ALWAYS(pLoop->u.btree.pIndex!=0) - ){ - char *zWhere = explainIndexRange(db, pLoop, pItem->pTab); - zMsg = sqlite3MAppendf(db, zMsg, - ((flags & WHERE_AUTO_INDEX) ? - "%s USING AUTOMATIC %sINDEX%.0s%s" : - "%s USING %sINDEX %s%s"), - zMsg, ((flags & WHERE_IDX_ONLY) ? "COVERING " : ""), - pLoop->u.btree.pIndex->zName, zWhere); - sqlite3DbFree(db, zWhere); - }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s USING INTEGER PRIMARY KEY", zMsg); - - if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s (rowid=?)", zMsg); - }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s (rowid>? AND rowid?)", zMsg); - }else if( ALWAYS(flags&WHERE_TOP_LIMIT) ){ - zMsg = sqlite3MAppendf(db, zMsg, "%s (rowidu.vtab.idxNum, pLoop->u.vtab.idxStr); - } -#endif - zMsg = sqlite3MAppendf(db, zMsg, "%s", zMsg); - sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg, P4_DYNAMIC); - } -} -#else -# define explainOneScan(u,v,w,x,y,z) -#endif /* SQLITE_OMIT_EXPLAIN */ - - -/* -** Generate code for the start of the iLevel-th loop in the WHERE clause -** implementation described by pWInfo. -*/ -static Bitmask codeOneLoopStart( - WhereInfo *pWInfo, /* Complete information about the WHERE clause */ - int iLevel, /* Which level of pWInfo->a[] should be coded */ - Bitmask notReady /* Which tables are currently available */ -){ - int j, k; /* Loop counters */ - int iCur; /* The VDBE cursor for the table */ - int addrNxt; /* Where to jump to continue with the next IN case */ - int omitTable; /* True if we use the index only */ - int bRev; /* True if we need to scan in reverse order */ - WhereLevel *pLevel; /* The where level to be coded */ - WhereLoop *pLoop; /* The WhereLoop object being coded */ - WhereClause *pWC; /* Decomposition of the entire WHERE clause */ - WhereTerm *pTerm; /* A WHERE clause term */ - Parse *pParse; /* Parsing context */ - sqlite3 *db; /* Database connection */ - Vdbe *v; /* The prepared stmt under constructions */ - struct SrcList_item *pTabItem; /* FROM clause term being coded */ - int addrBrk; /* Jump here to break out of the loop */ - int addrCont; /* Jump here to continue with next cycle */ - int iRowidReg = 0; /* Rowid is stored in this register, if not zero */ - int iReleaseReg = 0; /* Temp register to free before returning */ - - pParse = pWInfo->pParse; - v = pParse->pVdbe; - pWC = &pWInfo->sWC; - db = pParse->db; - pLevel = &pWInfo->a[iLevel]; - pLoop = pLevel->pWLoop; - pTabItem = &pWInfo->pTabList->a[pLevel->iFrom]; - iCur = pTabItem->iCursor; - pLevel->notReady = notReady & ~getMask(&pWInfo->sMaskSet, iCur); - bRev = (pWInfo->revMask>>iLevel)&1; - omitTable = (pLoop->wsFlags & WHERE_IDX_ONLY)!=0 - && (pWInfo->wctrlFlags & WHERE_FORCE_TABLE)==0; - VdbeModuleComment((v, "Begin WHERE-loop%d: %s",iLevel,pTabItem->pTab->zName)); - - /* Create labels for the "break" and "continue" instructions - ** for the current loop. Jump to addrBrk to break out of a loop. - ** Jump to cont to go immediately to the next iteration of the - ** loop. - ** - ** When there is an IN operator, we also have a "addrNxt" label that - ** means to continue with the next IN value combination. When - ** there are no IN operators in the constraints, the "addrNxt" label - ** is the same as "addrBrk". - */ - addrBrk = pLevel->addrBrk = pLevel->addrNxt = sqlite3VdbeMakeLabel(v); - addrCont = pLevel->addrCont = sqlite3VdbeMakeLabel(v); - - /* If this is the right table of a LEFT OUTER JOIN, allocate and - ** initialize a memory cell that records if this table matches any - ** row of the left table of the join. - */ - if( pLevel->iFrom>0 && (pTabItem[0].jointype & JT_LEFT)!=0 ){ - pLevel->iLeftJoin = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Integer, 0, pLevel->iLeftJoin); - VdbeComment((v, "init LEFT JOIN no-match flag")); - } - - /* Special case of a FROM clause subquery implemented as a co-routine */ - if( pTabItem->viaCoroutine ){ - int regYield = pTabItem->regReturn; - sqlite3VdbeAddOp2(v, OP_Integer, pTabItem->addrFillSub-1, regYield); - pLevel->p2 = sqlite3VdbeAddOp1(v, OP_Yield, regYield); - VdbeComment((v, "next row of co-routine %s", pTabItem->pTab->zName)); - sqlite3VdbeAddOp2(v, OP_If, regYield+1, addrBrk); - pLevel->op = OP_Goto; - }else - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)!=0 ){ - /* Case 1: The table is a virtual-table. Use the VFilter and VNext - ** to access the data. - */ - int iReg; /* P3 Value for OP_VFilter */ - int addrNotFound; - int nConstraint = pLoop->nLTerm; - - sqlite3ExprCachePush(pParse); - iReg = sqlite3GetTempRange(pParse, nConstraint+2); - addrNotFound = pLevel->addrBrk; - for(j=0; jaLTerm[j]; - if( pTerm==0 ) continue; - if( pTerm->eOperator & WO_IN ){ - codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget); - addrNotFound = pLevel->addrNxt; - }else{ - sqlite3ExprCode(pParse, pTerm->pExpr->pRight, iTarget); - } - } - sqlite3VdbeAddOp2(v, OP_Integer, pLoop->u.vtab.idxNum, iReg); - sqlite3VdbeAddOp2(v, OP_Integer, nConstraint, iReg+1); - sqlite3VdbeAddOp4(v, OP_VFilter, iCur, addrNotFound, iReg, - pLoop->u.vtab.idxStr, - pLoop->u.vtab.needFree ? P4_MPRINTF : P4_STATIC); - pLoop->u.vtab.needFree = 0; - for(j=0; ju.vtab.omitMask>>j)&1 ){ - disableTerm(pLevel, pLoop->aLTerm[j]); - } - } - pLevel->op = OP_VNext; - pLevel->p1 = iCur; - pLevel->p2 = sqlite3VdbeCurrentAddr(v); - sqlite3ReleaseTempRange(pParse, iReg, nConstraint+2); - sqlite3ExprCachePop(pParse, 1); - }else -#endif /* SQLITE_OMIT_VIRTUALTABLE */ - - if( (pLoop->wsFlags & WHERE_IPK)!=0 - && (pLoop->wsFlags & (WHERE_COLUMN_IN|WHERE_COLUMN_EQ))!=0 - ){ - /* Case 2: We can directly reference a single row using an - ** equality comparison against the ROWID field. Or - ** we reference multiple rows using a "rowid IN (...)" - ** construct. - */ - assert( pLoop->u.btree.nEq==1 ); - iReleaseReg = sqlite3GetTempReg(pParse); - pTerm = pLoop->aLTerm[0]; - assert( pTerm!=0 ); - assert( pTerm->pExpr!=0 ); - assert( omitTable==0 ); - testcase( pTerm->wtFlags & TERM_VIRTUAL ); - iRowidReg = codeEqualityTerm(pParse, pTerm, pLevel, 0, bRev, iReleaseReg); - addrNxt = pLevel->addrNxt; - sqlite3VdbeAddOp2(v, OP_MustBeInt, iRowidReg, addrNxt); - sqlite3VdbeAddOp3(v, OP_NotExists, iCur, addrNxt, iRowidReg); - sqlite3ExprCacheAffinityChange(pParse, iRowidReg, 1); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - VdbeComment((v, "pk")); - pLevel->op = OP_Noop; - }else if( (pLoop->wsFlags & WHERE_IPK)!=0 - && (pLoop->wsFlags & WHERE_COLUMN_RANGE)!=0 - ){ - /* Case 3: We have an inequality comparison against the ROWID field. - */ - int testOp = OP_Noop; - int start; - int memEndValue = 0; - WhereTerm *pStart, *pEnd; - - assert( omitTable==0 ); - j = 0; - pStart = pEnd = 0; - if( pLoop->wsFlags & WHERE_BTM_LIMIT ) pStart = pLoop->aLTerm[j++]; - if( pLoop->wsFlags & WHERE_TOP_LIMIT ) pEnd = pLoop->aLTerm[j++]; - assert( pStart!=0 || pEnd!=0 ); - if( bRev ){ - pTerm = pStart; - pStart = pEnd; - pEnd = pTerm; - } - if( pStart ){ - Expr *pX; /* The expression that defines the start bound */ - int r1, rTemp; /* Registers for holding the start boundary */ - - /* The following constant maps TK_xx codes into corresponding - ** seek opcodes. It depends on a particular ordering of TK_xx - */ - const u8 aMoveOp[] = { - /* TK_GT */ OP_SeekGt, - /* TK_LE */ OP_SeekLe, - /* TK_LT */ OP_SeekLt, - /* TK_GE */ OP_SeekGe - }; - assert( TK_LE==TK_GT+1 ); /* Make sure the ordering.. */ - assert( TK_LT==TK_GT+2 ); /* ... of the TK_xx values... */ - assert( TK_GE==TK_GT+3 ); /* ... is correcct. */ - - assert( (pStart->wtFlags & TERM_VNULL)==0 ); - testcase( pStart->wtFlags & TERM_VIRTUAL ); - pX = pStart->pExpr; - assert( pX!=0 ); - testcase( pStart->leftCursor!=iCur ); /* transitive constraints */ - r1 = sqlite3ExprCodeTemp(pParse, pX->pRight, &rTemp); - sqlite3VdbeAddOp3(v, aMoveOp[pX->op-TK_GT], iCur, addrBrk, r1); - VdbeComment((v, "pk")); - sqlite3ExprCacheAffinityChange(pParse, r1, 1); - sqlite3ReleaseTempReg(pParse, rTemp); - disableTerm(pLevel, pStart); - }else{ - sqlite3VdbeAddOp2(v, bRev ? OP_Last : OP_Rewind, iCur, addrBrk); - } - if( pEnd ){ - Expr *pX; - pX = pEnd->pExpr; - assert( pX!=0 ); - assert( (pEnd->wtFlags & TERM_VNULL)==0 ); - testcase( pEnd->leftCursor!=iCur ); /* Transitive constraints */ - testcase( pEnd->wtFlags & TERM_VIRTUAL ); - memEndValue = ++pParse->nMem; - sqlite3ExprCode(pParse, pX->pRight, memEndValue); - if( pX->op==TK_LT || pX->op==TK_GT ){ - testOp = bRev ? OP_Le : OP_Ge; - }else{ - testOp = bRev ? OP_Lt : OP_Gt; - } - disableTerm(pLevel, pEnd); - } - start = sqlite3VdbeCurrentAddr(v); - pLevel->op = bRev ? OP_Prev : OP_Next; - pLevel->p1 = iCur; - pLevel->p2 = start; - assert( pLevel->p5==0 ); - if( testOp!=OP_Noop ){ - iRowidReg = iReleaseReg = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_Rowid, iCur, iRowidReg); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - sqlite3VdbeAddOp3(v, testOp, memEndValue, addrBrk, iRowidReg); - sqlite3VdbeChangeP5(v, SQLITE_AFF_NUMERIC | SQLITE_JUMPIFNULL); - } - }else if( pLoop->wsFlags & WHERE_INDEXED ){ - /* Case 4: A scan using an index. - ** - ** The WHERE clause may contain zero or more equality - ** terms ("==" or "IN" operators) that refer to the N - ** left-most columns of the index. It may also contain - ** inequality constraints (>, <, >= or <=) on the indexed - ** column that immediately follows the N equalities. Only - ** the right-most column can be an inequality - the rest must - ** use the "==" and "IN" operators. For example, if the - ** index is on (x,y,z), then the following clauses are all - ** optimized: - ** - ** x=5 - ** x=5 AND y=10 - ** x=5 AND y<10 - ** x=5 AND y>5 AND y<10 - ** x=5 AND y=5 AND z<=10 - ** - ** The z<10 term of the following cannot be used, only - ** the x=5 term: - ** - ** x=5 AND z<10 - ** - ** N may be zero if there are inequality constraints. - ** If there are no inequality constraints, then N is at - ** least one. - ** - ** This case is also used when there are no WHERE clause - ** constraints but an index is selected anyway, in order - ** to force the output order to conform to an ORDER BY. - */ - static const u8 aStartOp[] = { - 0, - 0, - OP_Rewind, /* 2: (!start_constraints && startEq && !bRev) */ - OP_Last, /* 3: (!start_constraints && startEq && bRev) */ - OP_SeekGt, /* 4: (start_constraints && !startEq && !bRev) */ - OP_SeekLt, /* 5: (start_constraints && !startEq && bRev) */ - OP_SeekGe, /* 6: (start_constraints && startEq && !bRev) */ - OP_SeekLe /* 7: (start_constraints && startEq && bRev) */ - }; - static const u8 aEndOp[] = { - OP_Noop, /* 0: (!end_constraints) */ - OP_IdxGE, /* 1: (end_constraints && !bRev) */ - OP_IdxLT /* 2: (end_constraints && bRev) */ - }; - u16 nEq = pLoop->u.btree.nEq; /* Number of == or IN terms */ - int isMinQuery = 0; /* If this is an optimized SELECT min(x).. */ - int regBase; /* Base register holding constraint values */ - int r1; /* Temp register */ - WhereTerm *pRangeStart = 0; /* Inequality constraint at range start */ - WhereTerm *pRangeEnd = 0; /* Inequality constraint at range end */ - int startEq; /* True if range start uses ==, >= or <= */ - int endEq; /* True if range end uses ==, >= or <= */ - int start_constraints; /* Start of range is constrained */ - int nConstraint; /* Number of constraint terms */ - Index *pIdx; /* The index we will be using */ - int iIdxCur; /* The VDBE cursor for the index */ - int nExtraReg = 0; /* Number of extra registers needed */ - int op; /* Instruction opcode */ - char *zStartAff; /* Affinity for start of range constraint */ - char cEndAff = 0; /* Affinity for end of range constraint */ - - pIdx = pLoop->u.btree.pIndex; - iIdxCur = pLevel->iIdxCur; - assert( nEq>=pLoop->u.btree.nSkip ); - - /* If this loop satisfies a sort order (pOrderBy) request that - ** was passed to this function to implement a "SELECT min(x) ..." - ** query, then the caller will only allow the loop to run for - ** a single iteration. This means that the first row returned - ** should not have a NULL value stored in 'x'. If column 'x' is - ** the first one after the nEq equality constraints in the index, - ** this requires some special handling. - */ - if( (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)!=0 - && (pWInfo->bOBSat!=0) - && (pIdx->nKeyCol>nEq) - ){ - assert( pLoop->u.btree.nSkip==0 ); - isMinQuery = 1; - nExtraReg = 1; - } - - /* Find any inequality constraint terms for the start and end - ** of the range. - */ - j = nEq; - if( pLoop->wsFlags & WHERE_BTM_LIMIT ){ - pRangeStart = pLoop->aLTerm[j++]; - nExtraReg = 1; - } - if( pLoop->wsFlags & WHERE_TOP_LIMIT ){ - pRangeEnd = pLoop->aLTerm[j++]; - nExtraReg = 1; - } - - /* Generate code to evaluate all constraint terms using == or IN - ** and store the values of those terms in an array of registers - ** starting at regBase. - */ - regBase = codeAllEqualityTerms(pParse,pLevel,bRev,nExtraReg,&zStartAff); - assert( zStartAff==0 || sqlite3Strlen30(zStartAff)>=nEq ); - if( zStartAff ) cEndAff = zStartAff[nEq]; - addrNxt = pLevel->addrNxt; - - /* If we are doing a reverse order scan on an ascending index, or - ** a forward order scan on a descending index, interchange the - ** start and end terms (pRangeStart and pRangeEnd). - */ - if( (nEqnKeyCol && bRev==(pIdx->aSortOrder[nEq]==SQLITE_SO_ASC)) - || (bRev && pIdx->nKeyCol==nEq) - ){ - SWAP(WhereTerm *, pRangeEnd, pRangeStart); - } - - testcase( pRangeStart && (pRangeStart->eOperator & WO_LE)!=0 ); - testcase( pRangeStart && (pRangeStart->eOperator & WO_GE)!=0 ); - testcase( pRangeEnd && (pRangeEnd->eOperator & WO_LE)!=0 ); - testcase( pRangeEnd && (pRangeEnd->eOperator & WO_GE)!=0 ); - startEq = !pRangeStart || pRangeStart->eOperator & (WO_LE|WO_GE); - endEq = !pRangeEnd || pRangeEnd->eOperator & (WO_LE|WO_GE); - start_constraints = pRangeStart || nEq>0; - - /* Seek the index cursor to the start of the range. */ - nConstraint = nEq; - if( pRangeStart ){ - Expr *pRight = pRangeStart->pExpr->pRight; - sqlite3ExprCode(pParse, pRight, regBase+nEq); - if( (pRangeStart->wtFlags & TERM_VNULL)==0 ){ - sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt); - } - if( zStartAff ){ - if( sqlite3CompareAffinity(pRight, zStartAff[nEq])==SQLITE_AFF_NONE){ - /* Since the comparison is to be performed with no conversions - ** applied to the operands, set the affinity to apply to pRight to - ** SQLITE_AFF_NONE. */ - zStartAff[nEq] = SQLITE_AFF_NONE; - } - if( sqlite3ExprNeedsNoAffinityChange(pRight, zStartAff[nEq]) ){ - zStartAff[nEq] = SQLITE_AFF_NONE; - } - } - nConstraint++; - testcase( pRangeStart->wtFlags & TERM_VIRTUAL ); - }else if( isMinQuery ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, regBase+nEq); - nConstraint++; - startEq = 0; - start_constraints = 1; - } - codeApplyAffinity(pParse, regBase, nConstraint, zStartAff); - op = aStartOp[(start_constraints<<2) + (startEq<<1) + bRev]; - assert( op!=0 ); - testcase( op==OP_Rewind ); - testcase( op==OP_Last ); - testcase( op==OP_SeekGt ); - testcase( op==OP_SeekGe ); - testcase( op==OP_SeekLe ); - testcase( op==OP_SeekLt ); - sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); - - /* Load the value for the inequality constraint at the end of the - ** range (if any). - */ - nConstraint = nEq; - if( pRangeEnd ){ - Expr *pRight = pRangeEnd->pExpr->pRight; - sqlite3ExprCacheRemove(pParse, regBase+nEq, 1); - sqlite3ExprCode(pParse, pRight, regBase+nEq); - if( (pRangeEnd->wtFlags & TERM_VNULL)==0 ){ - sqlite3ExprCodeIsNullJump(v, pRight, regBase+nEq, addrNxt); - } - if( sqlite3CompareAffinity(pRight, cEndAff)!=SQLITE_AFF_NONE - && !sqlite3ExprNeedsNoAffinityChange(pRight, cEndAff) - ){ - codeApplyAffinity(pParse, regBase+nEq, 1, &cEndAff); - } - nConstraint++; - testcase( pRangeEnd->wtFlags & TERM_VIRTUAL ); - } - sqlite3DbFree(db, zStartAff); - - /* Top of the loop body */ - pLevel->p2 = sqlite3VdbeCurrentAddr(v); - - /* Check if the index cursor is past the end of the range. */ - op = aEndOp[(pRangeEnd || nEq) * (1 + bRev)]; - testcase( op==OP_Noop ); - testcase( op==OP_IdxGE ); - testcase( op==OP_IdxLT ); - if( op!=OP_Noop ){ - sqlite3VdbeAddOp4Int(v, op, iIdxCur, addrNxt, regBase, nConstraint); - sqlite3VdbeChangeP5(v, endEq!=bRev ?1:0); - } - - /* If there are inequality constraints, check that the value - ** of the table column that the inequality contrains is not NULL. - ** If it is, jump to the next iteration of the loop. - */ - r1 = sqlite3GetTempReg(pParse); - testcase( pLoop->wsFlags & WHERE_BTM_LIMIT ); - testcase( pLoop->wsFlags & WHERE_TOP_LIMIT ); - if( (pLoop->wsFlags & (WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0 - && (j = pIdx->aiColumn[nEq])>=0 - && pIdx->pTable->aCol[j].notNull==0 - && (nEq || (pLoop->wsFlags & WHERE_BTM_LIMIT)==0) - ){ - sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, nEq, r1); - VdbeComment((v, "%s", pIdx->pTable->aCol[j].zName)); - sqlite3VdbeAddOp2(v, OP_IsNull, r1, addrCont); - } - sqlite3ReleaseTempReg(pParse, r1); - - /* Seek the table cursor, if required */ - disableTerm(pLevel, pRangeStart); - disableTerm(pLevel, pRangeEnd); - if( omitTable ){ - /* pIdx is a covering index. No need to access the main table. */ - }else if( HasRowid(pIdx->pTable) ){ - iRowidReg = iReleaseReg = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg); - sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - sqlite3VdbeAddOp2(v, OP_Seek, iCur, iRowidReg); /* Deferred seek */ - }else{ - Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable); - iRowidReg = sqlite3GetTempRange(pParse, pPk->nKeyCol); - for(j=0; jnKeyCol; j++){ - k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); - sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, iRowidReg+j); - } - sqlite3VdbeAddOp4Int(v, OP_NotFound, iCur, addrCont, - iRowidReg, pPk->nKeyCol); - } - - /* Record the instruction used to terminate the loop. Disable - ** WHERE clause terms made redundant by the index range scan. - */ - if( pLoop->wsFlags & WHERE_ONEROW ){ - pLevel->op = OP_Noop; - }else if( bRev ){ - pLevel->op = OP_Prev; - }else{ - pLevel->op = OP_Next; - } - pLevel->p1 = iIdxCur; - if( (pLoop->wsFlags & WHERE_CONSTRAINT)==0 ){ - pLevel->p5 = SQLITE_STMTSTATUS_FULLSCAN_STEP; - }else{ - assert( pLevel->p5==0 ); - } - }else - -#ifndef SQLITE_OMIT_OR_OPTIMIZATION - if( pLoop->wsFlags & WHERE_MULTI_OR ){ - /* Case 5: Two or more separately indexed terms connected by OR - ** - ** Example: - ** - ** CREATE TABLE t1(a,b,c,d); - ** CREATE INDEX i1 ON t1(a); - ** CREATE INDEX i2 ON t1(b); - ** CREATE INDEX i3 ON t1(c); - ** - ** SELECT * FROM t1 WHERE a=5 OR b=7 OR (c=11 AND d=13) - ** - ** In the example, there are three indexed terms connected by OR. - ** The top of the loop looks like this: - ** - ** Null 1 # Zero the rowset in reg 1 - ** - ** Then, for each indexed term, the following. The arguments to - ** RowSetTest are such that the rowid of the current row is inserted - ** into the RowSet. If it is already present, control skips the - ** Gosub opcode and jumps straight to the code generated by WhereEnd(). - ** - ** sqlite3WhereBegin() - ** RowSetTest # Insert rowid into rowset - ** Gosub 2 A - ** sqlite3WhereEnd() - ** - ** Following the above, code to terminate the loop. Label A, the target - ** of the Gosub above, jumps to the instruction right after the Goto. - ** - ** Null 1 # Zero the rowset in reg 1 - ** Goto B # The loop is finished. - ** - ** A: # Return data, whatever. - ** - ** Return 2 # Jump back to the Gosub - ** - ** B: - ** - */ - WhereClause *pOrWc; /* The OR-clause broken out into subterms */ - SrcList *pOrTab; /* Shortened table list or OR-clause generation */ - Index *pCov = 0; /* Potential covering index (or NULL) */ - int iCovCur = pParse->nTab++; /* Cursor used for index scans (if any) */ - - int regReturn = ++pParse->nMem; /* Register used with OP_Gosub */ - int regRowset = 0; /* Register for RowSet object */ - int regRowid = 0; /* Register holding rowid */ - int iLoopBody = sqlite3VdbeMakeLabel(v); /* Start of loop body */ - int iRetInit; /* Address of regReturn init */ - int untestedTerms = 0; /* Some terms not completely tested */ - int ii; /* Loop counter */ - Expr *pAndExpr = 0; /* An ".. AND (...)" expression */ - - pTerm = pLoop->aLTerm[0]; - assert( pTerm!=0 ); - assert( pTerm->eOperator & WO_OR ); - assert( (pTerm->wtFlags & TERM_ORINFO)!=0 ); - pOrWc = &pTerm->u.pOrInfo->wc; - pLevel->op = OP_Return; - pLevel->p1 = regReturn; - - /* Set up a new SrcList in pOrTab containing the table being scanned - ** by this loop in the a[0] slot and all notReady tables in a[1..] slots. - ** This becomes the SrcList in the recursive call to sqlite3WhereBegin(). - */ - if( pWInfo->nLevel>1 ){ - int nNotReady; /* The number of notReady tables */ - struct SrcList_item *origSrc; /* Original list of tables */ - nNotReady = pWInfo->nLevel - iLevel - 1; - pOrTab = sqlite3StackAllocRaw(db, - sizeof(*pOrTab)+ nNotReady*sizeof(pOrTab->a[0])); - if( pOrTab==0 ) return notReady; - pOrTab->nAlloc = (u8)(nNotReady + 1); - pOrTab->nSrc = pOrTab->nAlloc; - memcpy(pOrTab->a, pTabItem, sizeof(*pTabItem)); - origSrc = pWInfo->pTabList->a; - for(k=1; k<=nNotReady; k++){ - memcpy(&pOrTab->a[k], &origSrc[pLevel[k].iFrom], sizeof(pOrTab->a[k])); - } - }else{ - pOrTab = pWInfo->pTabList; - } - - /* Initialize the rowset register to contain NULL. An SQL NULL is - ** equivalent to an empty rowset. - ** - ** Also initialize regReturn to contain the address of the instruction - ** immediately following the OP_Return at the bottom of the loop. This - ** is required in a few obscure LEFT JOIN cases where control jumps - ** over the top of the loop into the body of it. In this case the - ** correct response for the end-of-loop code (the OP_Return) is to - ** fall through to the next instruction, just as an OP_Next does if - ** called on an uninitialized cursor. - */ - if( (pWInfo->wctrlFlags & WHERE_DUPLICATES_OK)==0 ){ - regRowset = ++pParse->nMem; - regRowid = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Null, 0, regRowset); - } - iRetInit = sqlite3VdbeAddOp2(v, OP_Integer, 0, regReturn); - - /* If the original WHERE clause is z of the form: (x1 OR x2 OR ...) AND y - ** Then for every term xN, evaluate as the subexpression: xN AND z - ** That way, terms in y that are factored into the disjunction will - ** be picked up by the recursive calls to sqlite3WhereBegin() below. - ** - ** Actually, each subexpression is converted to "xN AND w" where w is - ** the "interesting" terms of z - terms that did not originate in the - ** ON or USING clause of a LEFT JOIN, and terms that are usable as - ** indices. - ** - ** This optimization also only applies if the (x1 OR x2 OR ...) term - ** is not contained in the ON clause of a LEFT JOIN. - ** See ticket http://www.sqlite.org/src/info/f2369304e4 - */ - if( pWC->nTerm>1 ){ - int iTerm; - for(iTerm=0; iTermnTerm; iTerm++){ - Expr *pExpr = pWC->a[iTerm].pExpr; - if( &pWC->a[iTerm] == pTerm ) continue; - if( ExprHasProperty(pExpr, EP_FromJoin) ) continue; - testcase( pWC->a[iTerm].wtFlags & TERM_ORINFO ); - testcase( pWC->a[iTerm].wtFlags & TERM_VIRTUAL ); - if( pWC->a[iTerm].wtFlags & (TERM_ORINFO|TERM_VIRTUAL) ) continue; - if( (pWC->a[iTerm].eOperator & WO_ALL)==0 ) continue; - pExpr = sqlite3ExprDup(db, pExpr, 0); - pAndExpr = sqlite3ExprAnd(db, pAndExpr, pExpr); - } - if( pAndExpr ){ - pAndExpr = sqlite3PExpr(pParse, TK_AND, 0, pAndExpr, 0); - } - } - - for(ii=0; iinTerm; ii++){ - WhereTerm *pOrTerm = &pOrWc->a[ii]; - if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){ - WhereInfo *pSubWInfo; /* Info for single OR-term scan */ - Expr *pOrExpr = pOrTerm->pExpr; - if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){ - pAndExpr->pLeft = pOrExpr; - pOrExpr = pAndExpr; - } - /* Loop through table entries that match term pOrTerm. */ - pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0, - WHERE_OMIT_OPEN_CLOSE | WHERE_AND_ONLY | - WHERE_FORCE_TABLE | WHERE_ONETABLE_ONLY, iCovCur); - assert( pSubWInfo || pParse->nErr || db->mallocFailed ); - if( pSubWInfo ){ - WhereLoop *pSubLoop; - explainOneScan( - pParse, pOrTab, &pSubWInfo->a[0], iLevel, pLevel->iFrom, 0 - ); - if( (pWInfo->wctrlFlags & WHERE_DUPLICATES_OK)==0 ){ - int iSet = ((ii==pOrWc->nTerm-1)?-1:ii); - int r; - r = sqlite3ExprCodeGetColumn(pParse, pTabItem->pTab, -1, iCur, - regRowid, 0); - sqlite3VdbeAddOp4Int(v, OP_RowSetTest, regRowset, - sqlite3VdbeCurrentAddr(v)+2, r, iSet); - } - sqlite3VdbeAddOp2(v, OP_Gosub, regReturn, iLoopBody); - - /* The pSubWInfo->untestedTerms flag means that this OR term - ** contained one or more AND term from a notReady table. The - ** terms from the notReady table could not be tested and will - ** need to be tested later. - */ - if( pSubWInfo->untestedTerms ) untestedTerms = 1; - - /* If all of the OR-connected terms are optimized using the same - ** index, and the index is opened using the same cursor number - ** by each call to sqlite3WhereBegin() made by this loop, it may - ** be possible to use that index as a covering index. - ** - ** If the call to sqlite3WhereBegin() above resulted in a scan that - ** uses an index, and this is either the first OR-connected term - ** processed or the index is the same as that used by all previous - ** terms, set pCov to the candidate covering index. Otherwise, set - ** pCov to NULL to indicate that no candidate covering index will - ** be available. - */ - pSubLoop = pSubWInfo->a[0].pWLoop; - assert( (pSubLoop->wsFlags & WHERE_AUTO_INDEX)==0 ); - if( (pSubLoop->wsFlags & WHERE_INDEXED)!=0 - && (ii==0 || pSubLoop->u.btree.pIndex==pCov) - ){ - assert( pSubWInfo->a[0].iIdxCur==iCovCur ); - pCov = pSubLoop->u.btree.pIndex; - }else{ - pCov = 0; - } - - /* Finish the loop through table entries that match term pOrTerm. */ - sqlite3WhereEnd(pSubWInfo); - } - } - } - pLevel->u.pCovidx = pCov; - if( pCov ) pLevel->iIdxCur = iCovCur; - if( pAndExpr ){ - pAndExpr->pLeft = 0; - sqlite3ExprDelete(db, pAndExpr); - } - sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v)); - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrBrk); - sqlite3VdbeResolveLabel(v, iLoopBody); - - if( pWInfo->nLevel>1 ) sqlite3StackFree(db, pOrTab); - if( !untestedTerms ) disableTerm(pLevel, pTerm); - }else -#endif /* SQLITE_OMIT_OR_OPTIMIZATION */ - - { - /* Case 6: There is no usable index. We must do a complete - ** scan of the entire table. - */ - static const u8 aStep[] = { OP_Next, OP_Prev }; - static const u8 aStart[] = { OP_Rewind, OP_Last }; - assert( bRev==0 || bRev==1 ); - if( pTabItem->isRecursive ){ - /* Tables marked isRecursive have only a single row that is stored in - ** a pseudo-cursor. No need to Rewind or Next such cursors. */ - pLevel->op = OP_Noop; - }else{ - pLevel->op = aStep[bRev]; - pLevel->p1 = iCur; - pLevel->p2 = 1 + sqlite3VdbeAddOp2(v, aStart[bRev], iCur, addrBrk); - pLevel->p5 = SQLITE_STMTSTATUS_FULLSCAN_STEP; - } - } - - /* Insert code to test every subexpression that can be completely - ** computed using the current set of tables. - */ - for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){ - Expr *pE; - testcase( pTerm->wtFlags & TERM_VIRTUAL ); - testcase( pTerm->wtFlags & TERM_CODED ); - if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; - if( (pTerm->prereqAll & pLevel->notReady)!=0 ){ - testcase( pWInfo->untestedTerms==0 - && (pWInfo->wctrlFlags & WHERE_ONETABLE_ONLY)!=0 ); - pWInfo->untestedTerms = 1; - continue; - } - pE = pTerm->pExpr; - assert( pE!=0 ); - if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){ - continue; - } - sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL); - pTerm->wtFlags |= TERM_CODED; - } - - /* Insert code to test for implied constraints based on transitivity - ** of the "==" operator. - ** - ** Example: If the WHERE clause contains "t1.a=t2.b" and "t2.b=123" - ** and we are coding the t1 loop and the t2 loop has not yet coded, - ** then we cannot use the "t1.a=t2.b" constraint, but we can code - ** the implied "t1.a=123" constraint. - */ - for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){ - Expr *pE, *pEAlt; - WhereTerm *pAlt; - if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; - if( pTerm->eOperator!=(WO_EQUIV|WO_EQ) ) continue; - if( pTerm->leftCursor!=iCur ) continue; - if( pLevel->iLeftJoin ) continue; - pE = pTerm->pExpr; - assert( !ExprHasProperty(pE, EP_FromJoin) ); - assert( (pTerm->prereqRight & pLevel->notReady)!=0 ); - pAlt = findTerm(pWC, iCur, pTerm->u.leftColumn, notReady, WO_EQ|WO_IN, 0); - if( pAlt==0 ) continue; - if( pAlt->wtFlags & (TERM_CODED) ) continue; - testcase( pAlt->eOperator & WO_EQ ); - testcase( pAlt->eOperator & WO_IN ); - VdbeModuleComment((v, "begin transitive constraint")); - pEAlt = sqlite3StackAllocRaw(db, sizeof(*pEAlt)); - if( pEAlt ){ - *pEAlt = *pAlt->pExpr; - pEAlt->pLeft = pE->pLeft; - sqlite3ExprIfFalse(pParse, pEAlt, addrCont, SQLITE_JUMPIFNULL); - sqlite3StackFree(db, pEAlt); - } - } - - /* For a LEFT OUTER JOIN, generate code that will record the fact that - ** at least one row of the right table has matched the left table. - */ - if( pLevel->iLeftJoin ){ - pLevel->addrFirst = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_Integer, 1, pLevel->iLeftJoin); - VdbeComment((v, "record LEFT JOIN hit")); - sqlite3ExprCacheClear(pParse); - for(pTerm=pWC->a, j=0; jnTerm; j++, pTerm++){ - testcase( pTerm->wtFlags & TERM_VIRTUAL ); - testcase( pTerm->wtFlags & TERM_CODED ); - if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue; - if( (pTerm->prereqAll & pLevel->notReady)!=0 ){ - assert( pWInfo->untestedTerms ); - continue; - } - assert( pTerm->pExpr ); - sqlite3ExprIfFalse(pParse, pTerm->pExpr, addrCont, SQLITE_JUMPIFNULL); - pTerm->wtFlags |= TERM_CODED; - } - } - sqlite3ReleaseTempReg(pParse, iReleaseReg); - - return pLevel->notReady; -} - -#if defined(WHERETRACE_ENABLED) && defined(SQLITE_ENABLE_TREE_EXPLAIN) -/* -** Generate "Explanation" text for a WhereTerm. -*/ -static void whereExplainTerm(Vdbe *v, WhereTerm *pTerm){ - char zType[4]; - memcpy(zType, "...", 4); - if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V'; - if( pTerm->eOperator & WO_EQUIV ) zType[1] = 'E'; - if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L'; - sqlite3ExplainPrintf(v, "%s ", zType); - sqlite3ExplainExpr(v, pTerm->pExpr); -} -#endif /* WHERETRACE_ENABLED && SQLITE_ENABLE_TREE_EXPLAIN */ - #ifdef WHERETRACE_ENABLED /* @@ -112398,16 +131080,17 @@ static void whereExplainTerm(Vdbe *v, WhereTerm *pTerm){ */ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){ WhereInfo *pWInfo = pWC->pWInfo; - int nb = 1+(pWInfo->pTabList->nSrc+7)/8; + int nb = 1+(pWInfo->pTabList->nSrc+3)/4; struct SrcList_item *pItem = pWInfo->pTabList->a + p->iTab; Table *pTab = pItem->pTab; + Bitmask mAll = (((Bitmask)1)<<(nb*4)) - 1; sqlite3DebugPrintf("%c%2d.%0*llx.%0*llx", p->cId, - p->iTab, nb, p->maskSelf, nb, p->prereq); + p->iTab, nb, p->maskSelf, nb, p->prereq & mAll); sqlite3DebugPrintf(" %12s", pItem->zAlias ? pItem->zAlias : pTab->zName); if( (p->wsFlags & WHERE_VIRTUALTABLE)==0 ){ - const char *zName; - if( p->u.btree.pIndex && (zName = p->u.btree.pIndex->zName)!=0 ){ + const char *zName; + if( p->u.btree.pIndex && (zName = p->u.btree.pIndex->zName)!=0 ){ if( strncmp(zName, "sqlite_autoindex_", 17)==0 ){ int i = sqlite3Strlen30(zName) - 1; while( zName[i]!='_' ) i--; @@ -112428,29 +131111,18 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){ sqlite3DebugPrintf(" %-19s", z); sqlite3_free(z); } - sqlite3DebugPrintf(" f %04x N %d", p->wsFlags, p->nLTerm); - sqlite3DebugPrintf(" cost %d,%d,%d\n", p->rSetup, p->rRun, p->nOut); -#ifdef SQLITE_ENABLE_TREE_EXPLAIN - /* If the 0x100 bit of wheretracing is set, then show all of the constraint - ** expressions in the WhereLoop.aLTerm[] array. - */ - if( p->nLTerm && (sqlite3WhereTrace & 0x100)!=0 ){ /* WHERETRACE 0x100 */ - int i; - Vdbe *v = pWInfo->pParse->pVdbe; - sqlite3ExplainBegin(v); - for(i=0; inLTerm; i++){ - WhereTerm *pTerm = p->aLTerm[i]; - if( pTerm==0 ) continue; - sqlite3ExplainPrintf(v, " (%d) #%-2d ", i+1, (int)(pTerm-pWC->a)); - sqlite3ExplainPush(v); - whereExplainTerm(v, pTerm); - sqlite3ExplainPop(v); - sqlite3ExplainNL(v); - } - sqlite3ExplainFinish(v); - sqlite3DebugPrintf("%s", sqlite3VdbeExplanation(v)); + if( p->wsFlags & WHERE_SKIPSCAN ){ + sqlite3DebugPrintf(" f %05x %d-%d", p->wsFlags, p->nLTerm,p->nSkip); + }else{ + sqlite3DebugPrintf(" f %05x N %d", p->wsFlags, p->nLTerm); + } + sqlite3DebugPrintf(" cost %d,%d,%d\n", p->rSetup, p->rRun, p->nOut); + if( p->nLTerm && (sqlite3WhereTrace & 0x100)!=0 ){ + int i; + for(i=0; inLTerm; i++){ + whereTermPrint(p->aLTerm[i], i); + } } -#endif } #endif @@ -112476,7 +131148,6 @@ static void whereLoopClearUnion(sqlite3 *db, WhereLoop *p){ p->u.vtab.idxStr = 0; }else if( (p->wsFlags & WHERE_AUTO_INDEX)!=0 && p->u.btree.pIndex!=0 ){ sqlite3DbFree(db, p->u.btree.pIndex->zColAff); - sqlite3KeyInfoUnref(p->u.btree.pIndex->pKeyInfo); sqlite3DbFree(db, p->u.btree.pIndex); p->u.btree.pIndex = 0; } @@ -112499,8 +131170,8 @@ static int whereLoopResize(sqlite3 *db, WhereLoop *p, int n){ WhereTerm **paNew; if( p->nLSlot>=n ) return SQLITE_OK; n = (n+7)&~7; - paNew = sqlite3DbMallocRaw(db, sizeof(p->aLTerm[0])*n); - if( paNew==0 ) return SQLITE_NOMEM; + paNew = sqlite3DbMallocRawNN(db, sizeof(p->aLTerm[0])*n); + if( paNew==0 ) return SQLITE_NOMEM_BKPT; memcpy(paNew, p->aLTerm, sizeof(p->aLTerm[0])*p->nLSlot); if( p->aLTerm!=p->aLTermSpace ) sqlite3DbFree(db, p->aLTerm); p->aLTerm = paNew; @@ -112515,7 +131186,7 @@ static int whereLoopXfer(sqlite3 *db, WhereLoop *pTo, WhereLoop *pFrom){ whereLoopClearUnion(db, pTo); if( whereLoopResize(db, pTo, pFrom->nLTerm) ){ memset(&pTo->u, 0, sizeof(pTo->u)); - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } memcpy(pTo, pFrom, WHERE_LOOP_XFER_SZ); memcpy(pTo->aLTerm, pFrom->aLTerm, pTo->nLTerm*sizeof(pTo->aLTerm[0])); @@ -112540,7 +131211,14 @@ static void whereLoopDelete(sqlite3 *db, WhereLoop *p){ */ static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){ if( ALWAYS(pWInfo) ){ - whereClauseClear(&pWInfo->sWC); + int i; + for(i=0; inLevel; i++){ + WhereLevel *pLevel = &pWInfo->a[i]; + if( pLevel->pWLoop && (pLevel->pWLoop->wsFlags & WHERE_IN_ABLE) ){ + sqlite3DbFree(db, pLevel->u.in.aInLoop); + } + } + sqlite3WhereClauseClear(&pWInfo->sWC); while( pWInfo->pLoops ){ WhereLoop *p = pWInfo->pLoops; pWInfo->pLoops = p->pNextLoop; @@ -112551,59 +131229,101 @@ static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){ } /* -** Insert or replace a WhereLoop entry using the template supplied. +** Return TRUE if all of the following are true: ** -** An existing WhereLoop entry might be overwritten if the new template -** is better and has fewer dependencies. Or the template will be ignored -** and no insert will occur if an existing WhereLoop is faster and has -** fewer dependencies than the template. Otherwise a new WhereLoop is -** added based on the template. +** (1) X has the same or lower cost that Y +** (2) X is a proper subset of Y +** (3) X skips at least as many columns as Y ** -** If pBuilder->pOrSet is not NULL then we only care about only the -** prerequisites and rRun and nOut costs of the N best loops. That -** information is gathered in the pBuilder->pOrSet object. This special -** processing mode is used only for OR clause processing. +** By "proper subset" we mean that X uses fewer WHERE clause terms +** than Y and that every WHERE clause term used by X is also used +** by Y. ** -** When accumulating multiple loops (when pBuilder->pOrSet is NULL) we -** still might overwrite similar loops with the new template if the -** template is better. Loops may be overwritten if the following -** conditions are met: -** -** (1) They have the same iTab. -** (2) They have the same iSortIdx. -** (3) The template has same or fewer dependencies than the current loop -** (4) The template has the same or lower cost than the current loop -** (5) The template uses more terms of the same index but has no additional -** dependencies +** If X is a proper subset of Y then Y is a better choice and ought +** to have a lower cost. This routine returns TRUE when that cost +** relationship is inverted and needs to be adjusted. The third rule +** was added because if X uses skip-scan less than Y it still might +** deserve a lower cost even if it is a proper subset of Y. */ -static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ - WhereLoop **ppPrev, *p, *pNext = 0; - WhereInfo *pWInfo = pBuilder->pWInfo; - sqlite3 *db = pWInfo->pParse->db; - - /* If pBuilder->pOrSet is defined, then only keep track of the costs - ** and prereqs. - */ - if( pBuilder->pOrSet!=0 ){ -#if WHERETRACE_ENABLED - u16 n = pBuilder->pOrSet->n; - int x = -#endif - whereOrInsert(pBuilder->pOrSet, pTemplate->prereq, pTemplate->rRun, - pTemplate->nOut); -#if WHERETRACE_ENABLED /* 0x8 */ - if( sqlite3WhereTrace & 0x8 ){ - sqlite3DebugPrintf(x?" or-%d: ":" or-X: ", n); - whereLoopPrint(pTemplate, pBuilder->pWC); - } -#endif - return SQLITE_OK; +static int whereLoopCheaperProperSubset( + const WhereLoop *pX, /* First WhereLoop to compare */ + const WhereLoop *pY /* Compare against this WhereLoop */ +){ + int i, j; + if( pX->nLTerm-pX->nSkip >= pY->nLTerm-pY->nSkip ){ + return 0; /* X is not a subset of Y */ } + if( pY->nSkip > pX->nSkip ) return 0; + if( pX->rRun >= pY->rRun ){ + if( pX->rRun > pY->rRun ) return 0; /* X costs more than Y */ + if( pX->nOut > pY->nOut ) return 0; /* X costs more than Y */ + } + for(i=pX->nLTerm-1; i>=0; i--){ + if( pX->aLTerm[i]==0 ) continue; + for(j=pY->nLTerm-1; j>=0; j--){ + if( pY->aLTerm[j]==pX->aLTerm[i] ) break; + } + if( j<0 ) return 0; /* X not a subset of Y since term X[i] not used by Y */ + } + return 1; /* All conditions meet */ +} - /* Search for an existing WhereLoop to overwrite, or which takes - ** priority over pTemplate. - */ - for(ppPrev=&pWInfo->pLoops, p=*ppPrev; p; ppPrev=&p->pNextLoop, p=*ppPrev){ +/* +** Try to adjust the cost of WhereLoop pTemplate upwards or downwards so +** that: +** +** (1) pTemplate costs less than any other WhereLoops that are a proper +** subset of pTemplate +** +** (2) pTemplate costs more than any other WhereLoops for which pTemplate +** is a proper subset. +** +** To say "WhereLoop X is a proper subset of Y" means that X uses fewer +** WHERE clause terms than Y and that every WHERE clause term used by X is +** also used by Y. +*/ +static void whereLoopAdjustCost(const WhereLoop *p, WhereLoop *pTemplate){ + if( (pTemplate->wsFlags & WHERE_INDEXED)==0 ) return; + for(; p; p=p->pNextLoop){ + if( p->iTab!=pTemplate->iTab ) continue; + if( (p->wsFlags & WHERE_INDEXED)==0 ) continue; + if( whereLoopCheaperProperSubset(p, pTemplate) ){ + /* Adjust pTemplate cost downward so that it is cheaper than its + ** subset p. */ + WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n", + pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut-1)); + pTemplate->rRun = p->rRun; + pTemplate->nOut = p->nOut - 1; + }else if( whereLoopCheaperProperSubset(pTemplate, p) ){ + /* Adjust pTemplate cost upward so that it is costlier than p since + ** pTemplate is a proper subset of p */ + WHERETRACE(0x80,("subset cost adjustment %d,%d to %d,%d\n", + pTemplate->rRun, pTemplate->nOut, p->rRun, p->nOut+1)); + pTemplate->rRun = p->rRun; + pTemplate->nOut = p->nOut + 1; + } + } +} + +/* +** Search the list of WhereLoops in *ppPrev looking for one that can be +** supplanted by pTemplate. +** +** Return NULL if the WhereLoop list contains an entry that can supplant +** pTemplate, in other words if pTemplate does not belong on the list. +** +** If pX is a WhereLoop that pTemplate can supplant, then return the +** link that points to pX. +** +** If pTemplate cannot supplant any existing element of the list but needs +** to be added to the list, then return a pointer to the tail of the list. +*/ +static WhereLoop **whereLoopFindLesser( + WhereLoop **ppPrev, + const WhereLoop *pTemplate +){ + WhereLoop *p; + for(p=(*ppPrev); p; ppPrev=&p->pNextLoop, p=*ppPrev){ if( p->iTab!=pTemplate->iTab || p->iSortIdx!=pTemplate->iSortIdx ){ /* If either the iTab or iSortIdx values for two WhereLoop are different ** then those WhereLoops need to be considered separately. Neither is @@ -112621,43 +131341,115 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ ** rSetup. Call this SETUP-INVARIANT */ assert( p->rSetup>=pTemplate->rSetup ); - if( (p->prereq & pTemplate->prereq)==p->prereq - && p->rSetup<=pTemplate->rSetup - && p->rRun<=pTemplate->rRun - && p->nOut<=pTemplate->nOut + /* Any loop using an appliation-defined index (or PRIMARY KEY or + ** UNIQUE constraint) with one or more == constraints is better + ** than an automatic index. Unless it is a skip-scan. */ + if( (p->wsFlags & WHERE_AUTO_INDEX)!=0 + && (pTemplate->nSkip)==0 + && (pTemplate->wsFlags & WHERE_INDEXED)!=0 + && (pTemplate->wsFlags & WHERE_COLUMN_EQ)!=0 + && (p->prereq & pTemplate->prereq)==pTemplate->prereq ){ - /* This branch taken when p is equal or better than pTemplate in - ** all of (1) dependencies (2) setup-cost, (3) run-cost, and - ** (4) number of output rows. */ - assert( p->rSetup==pTemplate->rSetup ); - if( p->prereq==pTemplate->prereq - && p->nLTermnLTerm - && (p->wsFlags & pTemplate->wsFlags & WHERE_INDEXED)!=0 - && (p->u.btree.pIndex==pTemplate->u.btree.pIndex - || pTemplate->rRun+p->nLTerm<=p->rRun+pTemplate->nLTerm) - ){ - /* Overwrite an existing WhereLoop with an similar one that uses - ** more terms of the index */ - pNext = p->pNextLoop; - break; - }else{ - /* pTemplate is not helpful. - ** Return without changing or adding anything */ - goto whereLoopInsert_noop; - } - } - if( (p->prereq & pTemplate->prereq)==pTemplate->prereq - && p->rRun>=pTemplate->rRun - && p->nOut>=pTemplate->nOut - ){ - /* Overwrite an existing WhereLoop with a better one: one that is - ** better at one of (1) dependencies, (2) setup-cost, (3) run-cost - ** or (4) number of output rows, and is no worse in any of those - ** categories. */ - assert( p->rSetup>=pTemplate->rSetup ); /* SETUP-INVARIANT above */ - pNext = p->pNextLoop; break; } + + /* If existing WhereLoop p is better than pTemplate, pTemplate can be + ** discarded. WhereLoop p is better if: + ** (1) p has no more dependencies than pTemplate, and + ** (2) p has an equal or lower cost than pTemplate + */ + if( (p->prereq & pTemplate->prereq)==p->prereq /* (1) */ + && p->rSetup<=pTemplate->rSetup /* (2a) */ + && p->rRun<=pTemplate->rRun /* (2b) */ + && p->nOut<=pTemplate->nOut /* (2c) */ + ){ + return 0; /* Discard pTemplate */ + } + + /* If pTemplate is always better than p, then cause p to be overwritten + ** with pTemplate. pTemplate is better than p if: + ** (1) pTemplate has no more dependences than p, and + ** (2) pTemplate has an equal or lower cost than p. + */ + if( (p->prereq & pTemplate->prereq)==pTemplate->prereq /* (1) */ + && p->rRun>=pTemplate->rRun /* (2a) */ + && p->nOut>=pTemplate->nOut /* (2b) */ + ){ + assert( p->rSetup>=pTemplate->rSetup ); /* SETUP-INVARIANT above */ + break; /* Cause p to be overwritten by pTemplate */ + } + } + return ppPrev; +} + +/* +** Insert or replace a WhereLoop entry using the template supplied. +** +** An existing WhereLoop entry might be overwritten if the new template +** is better and has fewer dependencies. Or the template will be ignored +** and no insert will occur if an existing WhereLoop is faster and has +** fewer dependencies than the template. Otherwise a new WhereLoop is +** added based on the template. +** +** If pBuilder->pOrSet is not NULL then we care about only the +** prerequisites and rRun and nOut costs of the N best loops. That +** information is gathered in the pBuilder->pOrSet object. This special +** processing mode is used only for OR clause processing. +** +** When accumulating multiple loops (when pBuilder->pOrSet is NULL) we +** still might overwrite similar loops with the new template if the +** new template is better. Loops may be overwritten if the following +** conditions are met: +** +** (1) They have the same iTab. +** (2) They have the same iSortIdx. +** (3) The template has same or fewer dependencies than the current loop +** (4) The template has the same or lower cost than the current loop +*/ +static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ + WhereLoop **ppPrev, *p; + WhereInfo *pWInfo = pBuilder->pWInfo; + sqlite3 *db = pWInfo->pParse->db; + int rc; + + /* If pBuilder->pOrSet is defined, then only keep track of the costs + ** and prereqs. + */ + if( pBuilder->pOrSet!=0 ){ + if( pTemplate->nLTerm ){ +#if WHERETRACE_ENABLED + u16 n = pBuilder->pOrSet->n; + int x = +#endif + whereOrInsert(pBuilder->pOrSet, pTemplate->prereq, pTemplate->rRun, + pTemplate->nOut); +#if WHERETRACE_ENABLED /* 0x8 */ + if( sqlite3WhereTrace & 0x8 ){ + sqlite3DebugPrintf(x?" or-%d: ":" or-X: ", n); + whereLoopPrint(pTemplate, pBuilder->pWC); + } +#endif + } + return SQLITE_OK; + } + + /* Look for an existing WhereLoop to replace with pTemplate + */ + whereLoopAdjustCost(pWInfo->pLoops, pTemplate); + ppPrev = whereLoopFindLesser(&pWInfo->pLoops, pTemplate); + + if( ppPrev==0 ){ + /* There already exists a WhereLoop on the list that is better + ** than pTemplate, so just ignore pTemplate */ +#if WHERETRACE_ENABLED /* 0x8 */ + if( sqlite3WhereTrace & 0x8 ){ + sqlite3DebugPrintf(" skip: "); + whereLoopPrint(pTemplate, pBuilder->pWC); + } +#endif + return SQLITE_OK; + }else{ + p = *ppPrev; } /* If we reach this point it means that either p[] should be overwritten @@ -112667,57 +131459,90 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){ #if WHERETRACE_ENABLED /* 0x8 */ if( sqlite3WhereTrace & 0x8 ){ if( p!=0 ){ - sqlite3DebugPrintf("ins-del: "); + sqlite3DebugPrintf("replace: "); whereLoopPrint(p, pBuilder->pWC); } - sqlite3DebugPrintf("ins-new: "); + sqlite3DebugPrintf(" add: "); whereLoopPrint(pTemplate, pBuilder->pWC); } #endif if( p==0 ){ - p = sqlite3DbMallocRaw(db, sizeof(WhereLoop)); - if( p==0 ) return SQLITE_NOMEM; + /* Allocate a new WhereLoop to add to the end of the list */ + *ppPrev = p = sqlite3DbMallocRawNN(db, sizeof(WhereLoop)); + if( p==0 ) return SQLITE_NOMEM_BKPT; whereLoopInit(p); + p->pNextLoop = 0; + }else{ + /* We will be overwriting WhereLoop p[]. But before we do, first + ** go through the rest of the list and delete any other entries besides + ** p[] that are also supplated by pTemplate */ + WhereLoop **ppTail = &p->pNextLoop; + WhereLoop *pToDel; + while( *ppTail ){ + ppTail = whereLoopFindLesser(ppTail, pTemplate); + if( ppTail==0 ) break; + pToDel = *ppTail; + if( pToDel==0 ) break; + *ppTail = pToDel->pNextLoop; +#if WHERETRACE_ENABLED /* 0x8 */ + if( sqlite3WhereTrace & 0x8 ){ + sqlite3DebugPrintf(" delete: "); + whereLoopPrint(pToDel, pBuilder->pWC); + } +#endif + whereLoopDelete(db, pToDel); + } } - whereLoopXfer(db, p, pTemplate); - p->pNextLoop = pNext; - *ppPrev = p; + rc = whereLoopXfer(db, p, pTemplate); if( (p->wsFlags & WHERE_VIRTUALTABLE)==0 ){ Index *pIndex = p->u.btree.pIndex; if( pIndex && pIndex->tnum==0 ){ p->u.btree.pIndex = 0; } } - return SQLITE_OK; - - /* Jump here if the insert is a no-op */ -whereLoopInsert_noop: -#if WHERETRACE_ENABLED /* 0x8 */ - if( sqlite3WhereTrace & 0x8 ){ - sqlite3DebugPrintf("ins-noop: "); - whereLoopPrint(pTemplate, pBuilder->pWC); - } -#endif - return SQLITE_OK; + return rc; } /* ** Adjust the WhereLoop.nOut value downward to account for terms of the ** WHERE clause that reference the loop but which are not used by an ** index. +* +** For every WHERE clause term that is not used by the index +** and which has a truth probability assigned by one of the likelihood(), +** likely(), or unlikely() SQL functions, reduce the estimated number +** of output rows by the probability specified. ** -** In the current implementation, the first extra WHERE clause term reduces -** the number of output rows by a factor of 10 and each additional term -** reduces the number of output rows by sqrt(2). +** TUNING: For every WHERE clause term that is not used by the index +** and which does not have an assigned truth probability, heuristics +** described below are used to try to estimate the truth probability. +** TODO --> Perhaps this is something that could be improved by better +** table statistics. +** +** Heuristic 1: Estimate the truth probability as 93.75%. The 93.75% +** value corresponds to -1 in LogEst notation, so this means decrement +** the WhereLoop.nOut field for every such WHERE clause term. +** +** Heuristic 2: If there exists one or more WHERE clause terms of the +** form "x==EXPR" and EXPR is not a constant 0 or 1, then make sure the +** final output row estimate is no greater than 1/4 of the total number +** of rows in the table. In other words, assume that x==EXPR will filter +** out at least 3 out of 4 rows. If EXPR is -1 or 0 or 1, then maybe the +** "x" column is boolean or else -1 or 0 or 1 is a common default value +** on the "x" column and so in that case only cap the output row estimate +** at 1/2 instead of 1/4. */ -static void whereLoopOutputAdjust(WhereClause *pWC, WhereLoop *pLoop){ +static void whereLoopOutputAdjust( + WhereClause *pWC, /* The WHERE clause */ + WhereLoop *pLoop, /* The loop to adjust downward */ + LogEst nRow /* Number of rows in the entire table */ +){ WhereTerm *pTerm, *pX; Bitmask notAllowed = ~(pLoop->prereq|pLoop->maskSelf); - int i, j; + int i, j, k; + LogEst iReduce = 0; /* pLoop->nOut should not exceed nRow-iReduce */ - if( !OptimizationEnabled(pWC->pWInfo->pParse->db, SQLITE_AdjustOutEst) ){ - return; - } + assert( (pLoop->wsFlags & WHERE_AUTO_INDEX)==0 ); for(i=pWC->nTerm, pTerm=pWC->a; i>0; i--, pTerm++){ if( (pTerm->wtFlags & TERM_VIRTUAL)!=0 ) break; if( (pTerm->prereqAll & pLoop->maskSelf)==0 ) continue; @@ -112728,13 +131553,115 @@ static void whereLoopOutputAdjust(WhereClause *pWC, WhereLoop *pLoop){ if( pX==pTerm ) break; if( pX->iParent>=0 && (&pWC->a[pX->iParent])==pTerm ) break; } - if( j<0 ) pLoop->nOut += pTerm->truthProb; + if( j<0 ){ + if( pTerm->truthProb<=0 ){ + /* If a truth probability is specified using the likelihood() hints, + ** then use the probability provided by the application. */ + pLoop->nOut += pTerm->truthProb; + }else{ + /* In the absence of explicit truth probabilities, use heuristics to + ** guess a reasonable truth probability. */ + pLoop->nOut--; + if( pTerm->eOperator&(WO_EQ|WO_IS) ){ + Expr *pRight = pTerm->pExpr->pRight; + testcase( pTerm->pExpr->op==TK_IS ); + if( sqlite3ExprIsInteger(pRight, &k) && k>=(-1) && k<=1 ){ + k = 10; + }else{ + k = 20; + } + if( iReducenOut > nRow-iReduce ) pLoop->nOut = nRow - iReduce; +} + +/* +** Term pTerm is a vector range comparison operation. The first comparison +** in the vector can be optimized using column nEq of the index. This +** function returns the total number of vector elements that can be used +** as part of the range comparison. +** +** For example, if the query is: +** +** WHERE a = ? AND (b, c, d) > (?, ?, ?) +** +** and the index: +** +** CREATE INDEX ... ON (a, b, c, d, e) +** +** then this function would be invoked with nEq=1. The value returned in +** this case is 3. +*/ +static int whereRangeVectorLen( + Parse *pParse, /* Parsing context */ + int iCur, /* Cursor open on pIdx */ + Index *pIdx, /* The index to be used for a inequality constraint */ + int nEq, /* Number of prior equality constraints on same index */ + WhereTerm *pTerm /* The vector inequality constraint */ +){ + int nCmp = sqlite3ExprVectorSize(pTerm->pExpr->pLeft); + int i; + + nCmp = MIN(nCmp, (pIdx->nColumn - nEq)); + for(i=1; ipExpr->pLeft->x.pList->a[i].pExpr; + Expr *pRhs = pTerm->pExpr->pRight; + if( pRhs->flags & EP_xIsSelect ){ + pRhs = pRhs->x.pSelect->pEList->a[i].pExpr; + }else{ + pRhs = pRhs->x.pList->a[i].pExpr; + } + + /* Check that the LHS of the comparison is a column reference to + ** the right column of the right source table. And that the sort + ** order of the index column is the same as the sort order of the + ** leftmost index column. */ + if( pLhs->op!=TK_COLUMN + || pLhs->iTable!=iCur + || pLhs->iColumn!=pIdx->aiColumn[i+nEq] + || pIdx->aSortOrder[i+nEq]!=pIdx->aSortOrder[nEq] + ){ + break; + } + + testcase( pLhs->iColumn==XN_ROWID ); + aff = sqlite3CompareAffinity(pRhs, sqlite3ExprAffinity(pLhs)); + idxaff = sqlite3TableColumnAffinity(pIdx->pTable, pLhs->iColumn); + if( aff!=idxaff ) break; + + pColl = sqlite3BinaryCompareCollSeq(pParse, pLhs, pRhs); + if( pColl==0 ) break; + if( sqlite3StrICmp(pColl->zName, pIdx->azColl[i+nEq]) ) break; + } + return i; } /* -** We have so far matched pBuilder->pNew->u.btree.nEq terms of the index pIndex. -** Try to match one more. +** Adjust the cost C by the costMult facter T. This only occurs if +** compiled with -DSQLITE_ENABLE_COSTMULT +*/ +#ifdef SQLITE_ENABLE_COSTMULT +# define ApplyCostMultiplier(C,T) C += T +#else +# define ApplyCostMultiplier(C,T) +#endif + +/* +** We have so far matched pBuilder->pNew->u.btree.nEq terms of the +** index pIndex. Try to match one more. +** +** When this function is called, pBuilder->pNew->nOut contains the +** number of rows expected to be visited by filtering using the nEq +** terms only. If it is modified, this value is restored before this +** function returns. ** ** If pProbe->tnum==0, that means pIndex is a fake index used for the ** INTEGER PRIMARY KEY. @@ -112755,178 +131682,247 @@ static int whereLoopAddBtreeIndex( Bitmask saved_prereq; /* Original value of pNew->prereq */ u16 saved_nLTerm; /* Original value of pNew->nLTerm */ u16 saved_nEq; /* Original value of pNew->u.btree.nEq */ - u16 saved_nSkip; /* Original value of pNew->u.btree.nSkip */ + u16 saved_nBtm; /* Original value of pNew->u.btree.nBtm */ + u16 saved_nTop; /* Original value of pNew->u.btree.nTop */ + u16 saved_nSkip; /* Original value of pNew->nSkip */ u32 saved_wsFlags; /* Original value of pNew->wsFlags */ LogEst saved_nOut; /* Original value of pNew->nOut */ - int iCol; /* Index of the column in the table */ int rc = SQLITE_OK; /* Return code */ - LogEst nRowEst; /* Estimated index selectivity */ + LogEst rSize; /* Number of rows in the table */ LogEst rLogSize; /* Logarithm of table size */ WhereTerm *pTop = 0, *pBtm = 0; /* Top and bottom range constraints */ pNew = pBuilder->pNew; - if( db->mallocFailed ) return SQLITE_NOMEM; + if( db->mallocFailed ) return SQLITE_NOMEM_BKPT; + WHERETRACE(0x800, ("BEGIN addBtreeIdx(%s), nEq=%d\n", + pProbe->zName, pNew->u.btree.nEq)); assert( (pNew->wsFlags & WHERE_VIRTUALTABLE)==0 ); assert( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 ); if( pNew->wsFlags & WHERE_BTM_LIMIT ){ opMask = WO_LT|WO_LE; - }else if( pProbe->tnum<=0 || (pSrc->jointype & JT_LEFT)!=0 ){ - opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE; }else{ - opMask = WO_EQ|WO_IN|WO_ISNULL|WO_GT|WO_GE|WO_LT|WO_LE; + assert( pNew->u.btree.nBtm==0 ); + opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE|WO_ISNULL|WO_IS; } if( pProbe->bUnordered ) opMask &= ~(WO_GT|WO_GE|WO_LT|WO_LE); - assert( pNew->u.btree.nEq<=pProbe->nKeyCol ); - if( pNew->u.btree.nEq < pProbe->nKeyCol ){ - iCol = pProbe->aiColumn[pNew->u.btree.nEq]; - nRowEst = sqlite3LogEst(pProbe->aiRowEst[pNew->u.btree.nEq+1]); - if( nRowEst==0 && pProbe->onError==OE_None ) nRowEst = 1; - }else{ - iCol = -1; - nRowEst = 0; - } - pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, iCol, - opMask, pProbe); + assert( pNew->u.btree.nEqnColumn ); + saved_nEq = pNew->u.btree.nEq; - saved_nSkip = pNew->u.btree.nSkip; + saved_nBtm = pNew->u.btree.nBtm; + saved_nTop = pNew->u.btree.nTop; + saved_nSkip = pNew->nSkip; saved_nLTerm = pNew->nLTerm; saved_wsFlags = pNew->wsFlags; saved_prereq = pNew->prereq; saved_nOut = pNew->nOut; + pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, saved_nEq, + opMask, pProbe); pNew->rSetup = 0; - rLogSize = estLog(sqlite3LogEst(pProbe->aiRowEst[0])); - - /* Consider using a skip-scan if there are no WHERE clause constraints - ** available for the left-most terms of the index, and if the average - ** number of repeats in the left-most terms is at least 18. The magic - ** number 18 was found by experimentation to be the payoff point where - ** skip-scan become faster than a full-scan. - */ - if( pTerm==0 - && saved_nEq==saved_nSkip - && saved_nEq+1nKeyCol - && pProbe->aiRowEst[saved_nEq+1]>=18 /* TUNING: Minimum for skip-scan */ - && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK - ){ - LogEst nIter; - pNew->u.btree.nEq++; - pNew->u.btree.nSkip++; - pNew->aLTerm[pNew->nLTerm++] = 0; - pNew->wsFlags |= WHERE_SKIPSCAN; - nIter = sqlite3LogEst(pProbe->aiRowEst[0]/pProbe->aiRowEst[saved_nEq+1]); - whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nIter); - } + rSize = pProbe->aiRowLogEst[0]; + rLogSize = estLog(rSize); for(; rc==SQLITE_OK && pTerm!=0; pTerm = whereScanNext(&scan)){ + u16 eOp = pTerm->eOperator; /* Shorthand for pTerm->eOperator */ + LogEst rCostIdx; + LogEst nOutUnadjusted; /* nOut before IN() and WHERE adjustments */ int nIn = 0; #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 int nRecValid = pBuilder->nRecValid; #endif - if( (pTerm->eOperator==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0) - && (iCol<0 || pSrc->pTab->aCol[iCol].notNull) + if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0) + && indexColumnNotNull(pProbe, saved_nEq) ){ continue; /* ignore IS [NOT] NULL constraints on NOT NULL columns */ } if( pTerm->prereqRight & pNew->maskSelf ) continue; - assert( pNew->nOut==saved_nOut ); + /* Do not allow the upper bound of a LIKE optimization range constraint + ** to mix with a lower range bound from some other source */ + if( pTerm->wtFlags & TERM_LIKEOPT && pTerm->eOperator==WO_LT ) continue; + + /* Do not allow IS constraints from the WHERE clause to be used by the + ** right table of a LEFT JOIN. Only constraints in the ON clause are + ** allowed */ + if( (pSrc->fg.jointype & JT_LEFT)!=0 + && !ExprHasProperty(pTerm->pExpr, EP_FromJoin) + && (eOp & (WO_IS|WO_ISNULL))!=0 + ){ + testcase( eOp & WO_IS ); + testcase( eOp & WO_ISNULL ); + continue; + } pNew->wsFlags = saved_wsFlags; pNew->u.btree.nEq = saved_nEq; + pNew->u.btree.nBtm = saved_nBtm; + pNew->u.btree.nTop = saved_nTop; pNew->nLTerm = saved_nLTerm; if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */ pNew->aLTerm[pNew->nLTerm++] = pTerm; pNew->prereq = (saved_prereq | pTerm->prereqRight) & ~pNew->maskSelf; - pNew->rRun = rLogSize; /* Baseline cost is log2(N). Adjustments below */ - if( pTerm->eOperator & WO_IN ){ + + assert( nInMul==0 + || (pNew->wsFlags & WHERE_COLUMN_NULL)!=0 + || (pNew->wsFlags & WHERE_COLUMN_IN)!=0 + || (pNew->wsFlags & WHERE_SKIPSCAN)!=0 + ); + + if( eOp & WO_IN ){ Expr *pExpr = pTerm->pExpr; pNew->wsFlags |= WHERE_COLUMN_IN; if( ExprHasProperty(pExpr, EP_xIsSelect) ){ /* "x IN (SELECT ...)": TUNING: the SELECT returns 25 rows */ + int i; nIn = 46; assert( 46==sqlite3LogEst(25) ); + + /* The expression may actually be of the form (x, y) IN (SELECT...). + ** In this case there is a separate term for each of (x) and (y). + ** However, the nIn multiplier should only be applied once, not once + ** for each such term. The following loop checks that pTerm is the + ** first such term in use, and sets nIn back to 0 if it is not. */ + for(i=0; inLTerm-1; i++){ + if( pNew->aLTerm[i] && pNew->aLTerm[i]->pExpr==pExpr ) nIn = 0; + } }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){ /* "x IN (value, value, ...)" */ nIn = sqlite3LogEst(pExpr->x.pList->nExpr); + assert( nIn>0 ); /* RHS always has 2 or more terms... The parser + ** changes "x IN (?)" into "x=?". */ } - pNew->rRun += nIn; - pNew->u.btree.nEq++; - pNew->nOut = nRowEst + nInMul + nIn; - }else if( pTerm->eOperator & (WO_EQ) ){ - assert( - (pNew->wsFlags & (WHERE_COLUMN_NULL|WHERE_COLUMN_IN|WHERE_SKIPSCAN))!=0 - || nInMul==0 - ); + }else if( eOp & (WO_EQ|WO_IS) ){ + int iCol = pProbe->aiColumn[saved_nEq]; pNew->wsFlags |= WHERE_COLUMN_EQ; - if( iCol<0 - || (pProbe->onError!=OE_None && nInMul==0 - && pNew->u.btree.nEq==pProbe->nKeyCol-1) + assert( saved_nEq==pNew->u.btree.nEq ); + if( iCol==XN_ROWID + || (iCol>0 && nInMul==0 && saved_nEq==pProbe->nKeyCol-1) ){ - assert( (pNew->wsFlags & WHERE_COLUMN_IN)==0 || iCol<0 ); - pNew->wsFlags |= WHERE_ONEROW; + if( iCol>=0 && pProbe->uniqNotNull==0 ){ + pNew->wsFlags |= WHERE_UNQ_WANTED; + }else{ + pNew->wsFlags |= WHERE_ONEROW; + } } - pNew->u.btree.nEq++; - pNew->nOut = nRowEst + nInMul; - }else if( pTerm->eOperator & (WO_ISNULL) ){ + }else if( eOp & WO_ISNULL ){ pNew->wsFlags |= WHERE_COLUMN_NULL; - pNew->u.btree.nEq++; - /* TUNING: IS NULL selects 2 rows */ - nIn = 10; assert( 10==sqlite3LogEst(2) ); - pNew->nOut = nRowEst + nInMul + nIn; - }else if( pTerm->eOperator & (WO_GT|WO_GE) ){ - testcase( pTerm->eOperator & WO_GT ); - testcase( pTerm->eOperator & WO_GE ); + }else if( eOp & (WO_GT|WO_GE) ){ + testcase( eOp & WO_GT ); + testcase( eOp & WO_GE ); pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT; + pNew->u.btree.nBtm = whereRangeVectorLen( + pParse, pSrc->iCursor, pProbe, saved_nEq, pTerm + ); pBtm = pTerm; pTop = 0; + if( pTerm->wtFlags & TERM_LIKEOPT ){ + /* Range contraints that come from the LIKE optimization are + ** always used in pairs. */ + pTop = &pTerm[1]; + assert( (pTop-(pTerm->pWC->a))pWC->nTerm ); + assert( pTop->wtFlags & TERM_LIKEOPT ); + assert( pTop->eOperator==WO_LT ); + if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */ + pNew->aLTerm[pNew->nLTerm++] = pTop; + pNew->wsFlags |= WHERE_TOP_LIMIT; + pNew->u.btree.nTop = 1; + } }else{ - assert( pTerm->eOperator & (WO_LT|WO_LE) ); - testcase( pTerm->eOperator & WO_LT ); - testcase( pTerm->eOperator & WO_LE ); + assert( eOp & (WO_LT|WO_LE) ); + testcase( eOp & WO_LT ); + testcase( eOp & WO_LE ); pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_TOP_LIMIT; + pNew->u.btree.nTop = whereRangeVectorLen( + pParse, pSrc->iCursor, pProbe, saved_nEq, pTerm + ); pTop = pTerm; pBtm = (pNew->wsFlags & WHERE_BTM_LIMIT)!=0 ? pNew->aLTerm[pNew->nLTerm-2] : 0; } + + /* At this point pNew->nOut is set to the number of rows expected to + ** be visited by the index scan before considering term pTerm, or the + ** values of nIn and nInMul. In other words, assuming that all + ** "x IN(...)" terms are replaced with "x = ?". This block updates + ** the value of pNew->nOut to account for pTerm (but not nIn/nInMul). */ + assert( pNew->nOut==saved_nOut ); if( pNew->wsFlags & WHERE_COLUMN_RANGE ){ - /* Adjust nOut and rRun for STAT3 range values */ - assert( pNew->nOut==saved_nOut ); + /* Adjust nOut using stat3/stat4 data. Or, if there is no stat3/stat4 + ** data, using some other estimate. */ whereRangeScanEst(pParse, pBuilder, pBtm, pTop, pNew); - } + }else{ + int nEq = ++pNew->u.btree.nEq; + assert( eOp & (WO_ISNULL|WO_EQ|WO_IN|WO_IS) ); + + assert( pNew->nOut==saved_nOut ); + if( pTerm->truthProb<=0 && pProbe->aiColumn[saved_nEq]>=0 ){ + assert( (eOp & WO_IN) || nIn==0 ); + testcase( eOp & WO_IN ); + pNew->nOut += pTerm->truthProb; + pNew->nOut -= nIn; + }else{ #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 - if( nInMul==0 - && pProbe->nSample - && pNew->u.btree.nEq<=pProbe->nSampleCol - && OptimizationEnabled(db, SQLITE_Stat3) - ){ - Expr *pExpr = pTerm->pExpr; - tRowcnt nOut = 0; - if( (pTerm->eOperator & (WO_EQ|WO_ISNULL))!=0 ){ - testcase( pTerm->eOperator & WO_EQ ); - testcase( pTerm->eOperator & WO_ISNULL ); - rc = whereEqualScanEst(pParse, pBuilder, pExpr->pRight, &nOut); - }else if( (pTerm->eOperator & WO_IN) - && !ExprHasProperty(pExpr, EP_xIsSelect) ){ - rc = whereInScanEst(pParse, pBuilder, pExpr->x.pList, &nOut); - } - assert( nOut==0 || rc==SQLITE_OK ); - if( nOut ){ - pNew->nOut = sqlite3LogEst(nOut); - if( pNew->nOut>saved_nOut ) pNew->nOut = saved_nOut; - } - } + tRowcnt nOut = 0; + if( nInMul==0 + && pProbe->nSample + && pNew->u.btree.nEq<=pProbe->nSampleCol + && ((eOp & WO_IN)==0 || !ExprHasProperty(pTerm->pExpr, EP_xIsSelect)) + ){ + Expr *pExpr = pTerm->pExpr; + if( (eOp & (WO_EQ|WO_ISNULL|WO_IS))!=0 ){ + testcase( eOp & WO_EQ ); + testcase( eOp & WO_IS ); + testcase( eOp & WO_ISNULL ); + rc = whereEqualScanEst(pParse, pBuilder, pExpr->pRight, &nOut); + }else{ + rc = whereInScanEst(pParse, pBuilder, pExpr->x.pList, &nOut); + } + if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK; + if( rc!=SQLITE_OK ) break; /* Jump out of the pTerm loop */ + if( nOut ){ + pNew->nOut = sqlite3LogEst(nOut); + if( pNew->nOut>saved_nOut ) pNew->nOut = saved_nOut; + pNew->nOut -= nIn; + } + } + if( nOut==0 ) #endif - if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK))==0 ){ - /* Each row involves a step of the index, then a binary search of - ** the main table */ - pNew->rRun = sqlite3LogEstAdd(pNew->rRun,rLogSize>27 ? rLogSize-17 : 10); + { + pNew->nOut += (pProbe->aiRowLogEst[nEq] - pProbe->aiRowLogEst[nEq-1]); + if( eOp & WO_ISNULL ){ + /* TUNING: If there is no likelihood() value, assume that a + ** "col IS NULL" expression matches twice as many rows + ** as (col=?). */ + pNew->nOut += 10; + } + } + } } - /* Step cost for each output row */ - pNew->rRun = sqlite3LogEstAdd(pNew->rRun, pNew->nOut); - whereLoopOutputAdjust(pBuilder->pWC, pNew); + + /* Set rCostIdx to the cost of visiting selected rows in index. Add + ** it to pNew->rRun, which is currently set to the cost of the index + ** seek only. Then, if this is a non-covering index, add the cost of + ** visiting the rows in the main table. */ + rCostIdx = pNew->nOut + 1 + (15*pProbe->szIdxRow)/pSrc->pTab->szTabRow; + pNew->rRun = sqlite3LogEstAdd(rLogSize, rCostIdx); + if( (pNew->wsFlags & (WHERE_IDX_ONLY|WHERE_IPK))==0 ){ + pNew->rRun = sqlite3LogEstAdd(pNew->rRun, pNew->nOut + 16); + } + ApplyCostMultiplier(pNew->rRun, pProbe->pTable->costMult); + + nOutUnadjusted = pNew->nOut; + pNew->rRun += nInMul + nIn; + pNew->nOut += nInMul + nIn; + whereLoopOutputAdjust(pBuilder->pWC, pNew, rSize); rc = whereLoopInsert(pBuilder, pNew); + + if( pNew->wsFlags & WHERE_COLUMN_RANGE ){ + pNew->nOut = saved_nOut; + }else{ + pNew->nOut = nOutUnadjusted; + } + if( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 - && pNew->u.btree.nEq<(pProbe->nKeyCol + (pProbe->zName!=0)) + && pNew->u.btree.nEqnColumn ){ whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nInMul+nIn); } @@ -112937,10 +131933,49 @@ static int whereLoopAddBtreeIndex( } pNew->prereq = saved_prereq; pNew->u.btree.nEq = saved_nEq; - pNew->u.btree.nSkip = saved_nSkip; + pNew->u.btree.nBtm = saved_nBtm; + pNew->u.btree.nTop = saved_nTop; + pNew->nSkip = saved_nSkip; pNew->wsFlags = saved_wsFlags; pNew->nOut = saved_nOut; pNew->nLTerm = saved_nLTerm; + + /* Consider using a skip-scan if there are no WHERE clause constraints + ** available for the left-most terms of the index, and if the average + ** number of repeats in the left-most terms is at least 18. + ** + ** The magic number 18 is selected on the basis that scanning 17 rows + ** is almost always quicker than an index seek (even though if the index + ** contains fewer than 2^17 rows we assume otherwise in other parts of + ** the code). And, even if it is not, it should not be too much slower. + ** On the other hand, the extra seeks could end up being significantly + ** more expensive. */ + assert( 42==sqlite3LogEst(18) ); + if( saved_nEq==saved_nSkip + && saved_nEq+1nKeyCol + && pProbe->noSkipScan==0 + && pProbe->aiRowLogEst[saved_nEq+1]>=42 /* TUNING: Minimum for skip-scan */ + && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK + ){ + LogEst nIter; + pNew->u.btree.nEq++; + pNew->nSkip++; + pNew->aLTerm[pNew->nLTerm++] = 0; + pNew->wsFlags |= WHERE_SKIPSCAN; + nIter = pProbe->aiRowLogEst[saved_nEq] - pProbe->aiRowLogEst[saved_nEq+1]; + pNew->nOut -= nIter; + /* TUNING: Because uncertainties in the estimates for skip-scan queries, + ** add a 1.375 fudge factor to make skip-scan slightly less likely. */ + nIter += 5; + whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, nIter + nInMul); + pNew->nOut = saved_nOut; + pNew->u.btree.nEq = saved_nEq; + pNew->nSkip = saved_nSkip; + pNew->wsFlags = saved_wsFlags; + } + + WHERETRACE(0x800, ("END addBtreeIdx(%s), nEq=%d, rc=%d\n", + pProbe->zName, saved_nEq, rc)); return rc; } @@ -112958,17 +131993,25 @@ static int indexMightHelpWithOrderBy( int iCursor ){ ExprList *pOB; + ExprList *aColExpr; int ii, jj; if( pIndex->bUnordered ) return 0; if( (pOB = pBuilder->pWInfo->pOrderBy)==0 ) return 0; for(ii=0; iinExpr; ii++){ Expr *pExpr = sqlite3ExprSkipCollate(pOB->a[ii].pExpr); - if( pExpr->op!=TK_COLUMN ) return 0; - if( pExpr->iTable==iCursor ){ + if( pExpr->op==TK_COLUMN && pExpr->iTable==iCursor ){ + if( pExpr->iColumn<0 ) return 1; for(jj=0; jjnKeyCol; jj++){ if( pExpr->iColumn==pIndex->aiColumn[jj] ) return 1; } + }else if( (aColExpr = pIndex->aColExpr)!=0 ){ + for(jj=0; jjnKeyCol; jj++){ + if( pIndex->aiColumn[jj]!=XN_EXPR ) continue; + if( sqlite3ExprCompare(pExpr,aColExpr->a[jj].pExpr,iCursor)==0 ){ + return 1; + } + } } } return 0; @@ -112998,25 +132041,65 @@ static Bitmask columnsInIndex(Index *pIdx){ static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){ int i; WhereTerm *pTerm; + while( pWhere->op==TK_AND ){ + if( !whereUsablePartialIndex(iTab,pWC,pWhere->pLeft) ) return 0; + pWhere = pWhere->pRight; + } for(i=0, pTerm=pWC->a; inTerm; i++, pTerm++){ - if( sqlite3ExprImpliesExpr(pTerm->pExpr, pWhere, iTab) ) return 1; + Expr *pExpr = pTerm->pExpr; + if( sqlite3ExprImpliesExpr(pExpr, pWhere, iTab) + && (!ExprHasProperty(pExpr, EP_FromJoin) || pExpr->iRightJoinTable==iTab) + ){ + return 1; + } } return 0; } /* ** Add all WhereLoop objects for a single table of the join where the table -** is idenfied by pBuilder->pNew->iTab. That table is guaranteed to be +** is identified by pBuilder->pNew->iTab. That table is guaranteed to be ** a b-tree table, not a virtual table. +** +** The costs (WhereLoop.rRun) of the b-tree loops added by this function +** are calculated as follows: +** +** For a full scan, assuming the table (or index) contains nRow rows: +** +** cost = nRow * 3.0 // full-table scan +** cost = nRow * K // scan of covering index +** cost = nRow * (K+3.0) // scan of non-covering index +** +** where K is a value between 1.1 and 3.0 set based on the relative +** estimated average size of the index and table records. +** +** For an index scan, where nVisit is the number of index rows visited +** by the scan, and nSeek is the number of seek operations required on +** the index b-tree: +** +** cost = nSeek * (log(nRow) + K * nVisit) // covering index +** cost = nSeek * (log(nRow) + (K+3.0) * nVisit) // non-covering index +** +** Normally, nSeek is 1. nSeek values greater than 1 come about if the +** WHERE clause includes "x IN (....)" terms used in place of "x=?". Or when +** implicit "x IN (SELECT x FROM tbl)" terms are added for skip-scans. +** +** The estimated values (nRow, nVisit, nSeek) often contain a large amount +** of uncertainty. For this reason, scoring is designed to pick plans that +** "do the least harm" if the estimates are inaccurate. For example, a +** log(nRow) factor is omitted from a non-covering index scan in order to +** bias the scoring in favor of using an index, since the worst-case +** performance of using an index is far better than the worst-case performance +** of a full table scan. */ static int whereLoopAddBtree( WhereLoopBuilder *pBuilder, /* WHERE clause information */ - Bitmask mExtra /* Extra prerequesites for using this table */ + Bitmask mPrereq /* Extra prerequesites for using this table */ ){ WhereInfo *pWInfo; /* WHERE analysis context */ Index *pProbe; /* An index we are evaluating */ Index sPk; /* A fake index object for the primary key */ - tRowcnt aiRowEstPk[2]; /* The aiRowEst[] value for the sPk index */ + LogEst aiRowEstPk[2]; /* The aiRowLogEst[] value for the sPk index */ i16 aiColumnPk = -1; /* The aColumn[] value for the sPk index */ SrcList *pTabList; /* The FROM clause */ struct SrcList_item *pSrc; /* The FROM clause btree term to add */ @@ -113037,9 +132120,9 @@ static int whereLoopAddBtree( pWC = pBuilder->pWC; assert( !IsVirtual(pSrc->pTab) ); - if( pSrc->pIndex ){ + if( pSrc->pIBIndex ){ /* An INDEXED BY clause specifies a particular index to use */ - pProbe = pSrc->pIndex; + pProbe = pSrc->pIBIndex; }else if( !HasRowid(pTab) ){ pProbe = pTab->pIndex; }else{ @@ -113050,33 +132133,35 @@ static int whereLoopAddBtree( Index *pFirst; /* First of real indices on the table */ memset(&sPk, 0, sizeof(Index)); sPk.nKeyCol = 1; + sPk.nColumn = 1; sPk.aiColumn = &aiColumnPk; - sPk.aiRowEst = aiRowEstPk; + sPk.aiRowLogEst = aiRowEstPk; sPk.onError = OE_Replace; sPk.pTable = pTab; - aiRowEstPk[0] = pTab->nRowEst; - aiRowEstPk[1] = 1; + sPk.szIdxRow = pTab->szTabRow; + aiRowEstPk[0] = pTab->nRowLogEst; + aiRowEstPk[1] = 0; pFirst = pSrc->pTab->pIndex; - if( pSrc->notIndexed==0 ){ + if( pSrc->fg.notIndexed==0 ){ /* The real indices of the table are only considered if the ** NOT INDEXED qualifier is omitted from the FROM clause */ sPk.pNext = pFirst; } pProbe = &sPk; } - rSize = sqlite3LogEst(pTab->nRowEst); + rSize = pTab->nRowLogEst; rLogSize = estLog(rSize); #ifndef SQLITE_OMIT_AUTOMATIC_INDEX /* Automatic indexes */ - if( !pBuilder->pOrSet + if( !pBuilder->pOrSet /* Not part of an OR optimization */ + && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0 && (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0 - && pSrc->pIndex==0 - && !pSrc->viaCoroutine - && !pSrc->notIndexed - && HasRowid(pTab) - && !pSrc->isCorrelated - && !pSrc->isRecursive + && pSrc->pIBIndex==0 /* Has no INDEXED BY clause */ + && !pSrc->fg.notIndexed /* Has no NOT INDEXED clause */ + && HasRowid(pTab) /* Not WITHOUT ROWID table. (FIXME: Why not?) */ + && !pSrc->fg.isCorrelated /* Not a correlated subquery */ + && !pSrc->fg.isRecursive /* Not a recursive common table expression. */ ){ /* Generate auto-index WhereLoops */ WhereTerm *pTerm; @@ -113085,22 +132170,32 @@ static int whereLoopAddBtree( if( pTerm->prereqRight & pNew->maskSelf ) continue; if( termCanDriveIndex(pTerm, pSrc, 0) ){ pNew->u.btree.nEq = 1; - pNew->u.btree.nSkip = 0; + pNew->nSkip = 0; pNew->u.btree.pIndex = 0; pNew->nLTerm = 1; pNew->aLTerm[0] = pTerm; /* TUNING: One-time cost for computing the automatic index is - ** approximately 7*N*log2(N) where N is the number of rows in - ** the table being indexed. */ - pNew->rSetup = rLogSize + rSize + 28; assert( 28==sqlite3LogEst(7) ); + ** estimated to be X*N*log2(N) where N is the number of rows in + ** the table being indexed and where X is 7 (LogEst=28) for normal + ** tables or 1.375 (LogEst=4) for views and subqueries. The value + ** of X is smaller for views and subqueries so that the query planner + ** will be more aggressive about generating automatic indexes for + ** those objects, since there is no opportunity to add schema + ** indexes on subqueries and views. */ + pNew->rSetup = rLogSize + rSize + 4; + if( pTab->pSelect==0 && (pTab->tabFlags & TF_Ephemeral)==0 ){ + pNew->rSetup += 24; + } + ApplyCostMultiplier(pNew->rSetup, pTab->costMult); + if( pNew->rSetup<0 ) pNew->rSetup = 0; /* TUNING: Each index lookup yields 20 rows in the table. This ** is more than the usual guess of 10 rows, since we have no way - ** of knowning how selective the index will ultimately be. It would + ** of knowing how selective the index will ultimately be. It would ** not be unreasonable to make this value much larger. */ pNew->nOut = 43; assert( 43==sqlite3LogEst(20) ); pNew->rRun = sqlite3LogEstAdd(rLogSize,pNew->nOut); pNew->wsFlags = WHERE_AUTO_INDEX; - pNew->prereq = mExtra | pTerm->prereqRight; + pNew->prereq = mPrereq | pTerm->prereqRight; rc = whereLoopInsert(pBuilder, pNew); } } @@ -113111,15 +132206,19 @@ static int whereLoopAddBtree( */ for(; rc==SQLITE_OK && pProbe; pProbe=pProbe->pNext, iSortIdx++){ if( pProbe->pPartIdxWhere!=0 - && !whereUsablePartialIndex(pNew->iTab, pWC, pProbe->pPartIdxWhere) ){ + && !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){ + testcase( pNew->iTab!=pSrc->iCursor ); /* See ticket [98d973b8f5] */ continue; /* Partial index inappropriate for this query */ } + rSize = pProbe->aiRowLogEst[0]; pNew->u.btree.nEq = 0; - pNew->u.btree.nSkip = 0; + pNew->u.btree.nBtm = 0; + pNew->u.btree.nTop = 0; + pNew->nSkip = 0; pNew->nLTerm = 0; pNew->iSortIdx = 0; pNew->rSetup = 0; - pNew->prereq = mExtra; + pNew->prereq = mPrereq; pNew->nOut = rSize; pNew->u.btree.pIndex = pProbe; b = indexMightHelpWithOrderBy(pBuilder, pProbe, pSrc->iCursor); @@ -113131,11 +132230,10 @@ static int whereLoopAddBtree( /* Full table scan */ pNew->iSortIdx = b ? iSortIdx : 0; - /* TUNING: Cost of full table scan is 3*(N + log2(N)). - ** + The extra 3 factor is to encourage the use of indexed lookups - ** over full scans. FIXME */ - pNew->rRun = sqlite3LogEstAdd(rSize,rLogSize) + 16; - whereLoopOutputAdjust(pWC, pNew); + /* TUNING: Cost of full table scan is (N*3.0). */ + pNew->rRun = rSize + 16; + ApplyCostMultiplier(pNew->rRun, pTab->costMult); + whereLoopOutputAdjust(pWC, pNew, rSize); rc = whereLoopInsert(pBuilder, pNew); pNew->nOut = rSize; if( rc ) break; @@ -113152,6 +132250,7 @@ static int whereLoopAddBtree( /* Full scan via index */ if( b || !HasRowid(pTab) + || pProbe->pPartIdxWhere!=0 || ( m==0 && pProbe->bUnordered==0 && (pProbe->szIdxRowszTabRow) @@ -113161,20 +132260,40 @@ static int whereLoopAddBtree( ) ){ pNew->iSortIdx = b ? iSortIdx : 0; - if( m==0 ){ - /* TUNING: Cost of a covering index scan is K*(N + log2(N)). - ** + The extra factor K of between 1.1 and 3.0 that depends - ** on the relative sizes of the table and the index. K - ** is smaller for smaller indices, thus favoring them. - */ - pNew->rRun = sqlite3LogEstAdd(rSize,rLogSize) + 1 + - (15*pProbe->szIdxRow)/pTab->szTabRow; - }else{ - /* TUNING: Cost of scanning a non-covering index is (N+1)*log2(N) - ** which we will simplify to just N*log2(N) */ - pNew->rRun = rSize + rLogSize; + + /* The cost of visiting the index rows is N*K, where K is + ** between 1.1 and 3.0, depending on the relative sizes of the + ** index and table rows. */ + pNew->rRun = rSize + 1 + (15*pProbe->szIdxRow)/pTab->szTabRow; + if( m!=0 ){ + /* If this is a non-covering index scan, add in the cost of + ** doing table lookups. The cost will be 3x the number of + ** lookups. Take into account WHERE clause terms that can be + ** satisfied using just the index, and that do not require a + ** table lookup. */ + LogEst nLookup = rSize + 16; /* Base cost: N*3 */ + int ii; + int iCur = pSrc->iCursor; + WhereClause *pWC2 = &pWInfo->sWC; + for(ii=0; iinTerm; ii++){ + WhereTerm *pTerm = &pWC2->a[ii]; + if( !sqlite3ExprCoveredByIndex(pTerm->pExpr, iCur, pProbe) ){ + break; + } + /* pTerm can be evaluated using just the index. So reduce + ** the expected number of table lookups accordingly */ + if( pTerm->truthProb<=0 ){ + nLookup += pTerm->truthProb; + }else{ + nLookup--; + if( pTerm->eOperator & (WO_EQ|WO_IS) ) nLookup -= 19; + } + } + + pNew->rRun = sqlite3LogEstAdd(pNew->rRun, nLookup); } - whereLoopOutputAdjust(pWC, pNew); + ApplyCostMultiplier(pNew->rRun, pTab->costMult); + whereLoopOutputAdjust(pWC, pNew, rSize); rc = whereLoopInsert(pBuilder, pNew); pNew->nOut = rSize; if( rc ) break; @@ -113190,176 +132309,300 @@ static int whereLoopAddBtree( /* If there was an INDEXED BY clause, then only that one index is ** considered. */ - if( pSrc->pIndex ) break; + if( pSrc->pIBIndex ) break; } return rc; } #ifndef SQLITE_OMIT_VIRTUALTABLE + +/* +** Argument pIdxInfo is already populated with all constraints that may +** be used by the virtual table identified by pBuilder->pNew->iTab. This +** function marks a subset of those constraints usable, invokes the +** xBestIndex method and adds the returned plan to pBuilder. +** +** A constraint is marked usable if: +** +** * Argument mUsable indicates that its prerequisites are available, and +** +** * It is not one of the operators specified in the mExclude mask passed +** as the fourth argument (which in practice is either WO_IN or 0). +** +** Argument mPrereq is a mask of tables that must be scanned before the +** virtual table in question. These are added to the plans prerequisites +** before it is added to pBuilder. +** +** Output parameter *pbIn is set to true if the plan added to pBuilder +** uses one or more WO_IN terms, or false otherwise. +*/ +static int whereLoopAddVirtualOne( + WhereLoopBuilder *pBuilder, + Bitmask mPrereq, /* Mask of tables that must be used. */ + Bitmask mUsable, /* Mask of usable tables */ + u16 mExclude, /* Exclude terms using these operators */ + sqlite3_index_info *pIdxInfo, /* Populated object for xBestIndex */ + u16 mNoOmit, /* Do not omit these constraints */ + int *pbIn /* OUT: True if plan uses an IN(...) op */ +){ + WhereClause *pWC = pBuilder->pWC; + struct sqlite3_index_constraint *pIdxCons; + struct sqlite3_index_constraint_usage *pUsage = pIdxInfo->aConstraintUsage; + int i; + int mxTerm; + int rc = SQLITE_OK; + WhereLoop *pNew = pBuilder->pNew; + Parse *pParse = pBuilder->pWInfo->pParse; + struct SrcList_item *pSrc = &pBuilder->pWInfo->pTabList->a[pNew->iTab]; + int nConstraint = pIdxInfo->nConstraint; + + assert( (mUsable & mPrereq)==mPrereq ); + *pbIn = 0; + pNew->prereq = mPrereq; + + /* Set the usable flag on the subset of constraints identified by + ** arguments mUsable and mExclude. */ + pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; + for(i=0; ia[pIdxCons->iTermOffset]; + pIdxCons->usable = 0; + if( (pTerm->prereqRight & mUsable)==pTerm->prereqRight + && (pTerm->eOperator & mExclude)==0 + ){ + pIdxCons->usable = 1; + } + } + + /* Initialize the output fields of the sqlite3_index_info structure */ + memset(pUsage, 0, sizeof(pUsage[0])*nConstraint); + assert( pIdxInfo->needToFreeIdxStr==0 ); + pIdxInfo->idxStr = 0; + pIdxInfo->idxNum = 0; + pIdxInfo->orderByConsumed = 0; + pIdxInfo->estimatedCost = SQLITE_BIG_DBL / (double)2; + pIdxInfo->estimatedRows = 25; + pIdxInfo->idxFlags = 0; + pIdxInfo->colUsed = (sqlite3_int64)pSrc->colUsed; + + /* Invoke the virtual table xBestIndex() method */ + rc = vtabBestIndex(pParse, pSrc->pTab, pIdxInfo); + if( rc ) return rc; + + mxTerm = -1; + assert( pNew->nLSlot>=nConstraint ); + for(i=0; iaLTerm[i] = 0; + pNew->u.vtab.omitMask = 0; + pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; + for(i=0; i=0 ){ + WhereTerm *pTerm; + int j = pIdxCons->iTermOffset; + if( iTerm>=nConstraint + || j<0 + || j>=pWC->nTerm + || pNew->aLTerm[iTerm]!=0 + || pIdxCons->usable==0 + ){ + rc = SQLITE_ERROR; + sqlite3ErrorMsg(pParse,"%s.xBestIndex malfunction",pSrc->pTab->zName); + return rc; + } + testcase( iTerm==nConstraint-1 ); + testcase( j==0 ); + testcase( j==pWC->nTerm-1 ); + pTerm = &pWC->a[j]; + pNew->prereq |= pTerm->prereqRight; + assert( iTermnLSlot ); + pNew->aLTerm[iTerm] = pTerm; + if( iTerm>mxTerm ) mxTerm = iTerm; + testcase( iTerm==15 ); + testcase( iTerm==16 ); + if( iTerm<16 && pUsage[i].omit ) pNew->u.vtab.omitMask |= 1<eOperator & WO_IN)!=0 ){ + /* A virtual table that is constrained by an IN clause may not + ** consume the ORDER BY clause because (1) the order of IN terms + ** is not necessarily related to the order of output terms and + ** (2) Multiple outputs from a single IN value will not merge + ** together. */ + pIdxInfo->orderByConsumed = 0; + pIdxInfo->idxFlags &= ~SQLITE_INDEX_SCAN_UNIQUE; + *pbIn = 1; assert( (mExclude & WO_IN)==0 ); + } + } + } + pNew->u.vtab.omitMask &= ~mNoOmit; + + pNew->nLTerm = mxTerm+1; + assert( pNew->nLTerm<=pNew->nLSlot ); + pNew->u.vtab.idxNum = pIdxInfo->idxNum; + pNew->u.vtab.needFree = pIdxInfo->needToFreeIdxStr; + pIdxInfo->needToFreeIdxStr = 0; + pNew->u.vtab.idxStr = pIdxInfo->idxStr; + pNew->u.vtab.isOrdered = (i8)(pIdxInfo->orderByConsumed ? + pIdxInfo->nOrderBy : 0); + pNew->rSetup = 0; + pNew->rRun = sqlite3LogEstFromDouble(pIdxInfo->estimatedCost); + pNew->nOut = sqlite3LogEst(pIdxInfo->estimatedRows); + + /* Set the WHERE_ONEROW flag if the xBestIndex() method indicated + ** that the scan will visit at most one row. Clear it otherwise. */ + if( pIdxInfo->idxFlags & SQLITE_INDEX_SCAN_UNIQUE ){ + pNew->wsFlags |= WHERE_ONEROW; + }else{ + pNew->wsFlags &= ~WHERE_ONEROW; + } + rc = whereLoopInsert(pBuilder, pNew); + if( pNew->u.vtab.needFree ){ + sqlite3_free(pNew->u.vtab.idxStr); + pNew->u.vtab.needFree = 0; + } + WHERETRACE(0xffff, (" bIn=%d prereqIn=%04llx prereqOut=%04llx\n", + *pbIn, (sqlite3_uint64)mPrereq, + (sqlite3_uint64)(pNew->prereq & ~mPrereq))); + + return rc; +} + + /* ** Add all WhereLoop objects for a table of the join identified by ** pBuilder->pNew->iTab. That table is guaranteed to be a virtual table. +** +** If there are no LEFT or CROSS JOIN joins in the query, both mPrereq and +** mUnusable are set to 0. Otherwise, mPrereq is a mask of all FROM clause +** entries that occur before the virtual table in the FROM clause and are +** separated from it by at least one LEFT or CROSS JOIN. Similarly, the +** mUnusable mask contains all FROM clause entries that occur after the +** virtual table and are separated from it by at least one LEFT or +** CROSS JOIN. +** +** For example, if the query were: +** +** ... FROM t1, t2 LEFT JOIN t3, t4, vt CROSS JOIN t5, t6; +** +** then mPrereq corresponds to (t1, t2) and mUnusable to (t5, t6). +** +** All the tables in mPrereq must be scanned before the current virtual +** table. So any terms for which all prerequisites are satisfied by +** mPrereq may be specified as "usable" in all calls to xBestIndex. +** Conversely, all tables in mUnusable must be scanned after the current +** virtual table, so any terms for which the prerequisites overlap with +** mUnusable should always be configured as "not-usable" for xBestIndex. */ static int whereLoopAddVirtual( WhereLoopBuilder *pBuilder, /* WHERE clause information */ - Bitmask mExtra + Bitmask mPrereq, /* Tables that must be scanned before this one */ + Bitmask mUnusable /* Tables that must be scanned after this one */ ){ + int rc = SQLITE_OK; /* Return code */ WhereInfo *pWInfo; /* WHERE analysis context */ Parse *pParse; /* The parsing context */ WhereClause *pWC; /* The WHERE clause */ struct SrcList_item *pSrc; /* The FROM clause term to search */ - Table *pTab; - sqlite3 *db; - sqlite3_index_info *pIdxInfo; - struct sqlite3_index_constraint *pIdxCons; - struct sqlite3_index_constraint_usage *pUsage; - WhereTerm *pTerm; - int i, j; - int iTerm, mxTerm; - int nConstraint; - int seenIn = 0; /* True if an IN operator is seen */ - int seenVar = 0; /* True if a non-constant constraint is seen */ - int iPhase; /* 0: const w/o IN, 1: const, 2: no IN, 2: IN */ + sqlite3_index_info *p; /* Object to pass to xBestIndex() */ + int nConstraint; /* Number of constraints in p */ + int bIn; /* True if plan uses IN(...) operator */ WhereLoop *pNew; - int rc = SQLITE_OK; + Bitmask mBest; /* Tables used by best possible plan */ + u16 mNoOmit; + assert( (mPrereq & mUnusable)==0 ); pWInfo = pBuilder->pWInfo; pParse = pWInfo->pParse; - db = pParse->db; pWC = pBuilder->pWC; pNew = pBuilder->pNew; pSrc = &pWInfo->pTabList->a[pNew->iTab]; - pTab = pSrc->pTab; - assert( IsVirtual(pTab) ); - pIdxInfo = allocateIndexInfo(pParse, pWC, pSrc, pBuilder->pOrderBy); - if( pIdxInfo==0 ) return SQLITE_NOMEM; - pNew->prereq = 0; + assert( IsVirtual(pSrc->pTab) ); + p = allocateIndexInfo(pParse, pWC, mUnusable, pSrc, pBuilder->pOrderBy, + &mNoOmit); + if( p==0 ) return SQLITE_NOMEM_BKPT; pNew->rSetup = 0; pNew->wsFlags = WHERE_VIRTUALTABLE; pNew->nLTerm = 0; pNew->u.vtab.needFree = 0; - pUsage = pIdxInfo->aConstraintUsage; - nConstraint = pIdxInfo->nConstraint; - if( whereLoopResize(db, pNew, nConstraint) ){ - sqlite3DbFree(db, pIdxInfo); - return SQLITE_NOMEM; + nConstraint = p->nConstraint; + if( whereLoopResize(pParse->db, pNew, nConstraint) ){ + sqlite3DbFree(pParse->db, p); + return SQLITE_NOMEM_BKPT; } - for(iPhase=0; iPhase<=3; iPhase++){ - if( !seenIn && (iPhase&1)!=0 ){ - iPhase++; - if( iPhase>3 ) break; - } - if( !seenVar && iPhase>1 ) break; - pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; - for(i=0; inConstraint; i++, pIdxCons++){ - j = pIdxCons->iTermOffset; - pTerm = &pWC->a[j]; - switch( iPhase ){ - case 0: /* Constants without IN operator */ - pIdxCons->usable = 0; - if( (pTerm->eOperator & WO_IN)!=0 ){ - seenIn = 1; - } - if( pTerm->prereqRight!=0 ){ - seenVar = 1; - }else if( (pTerm->eOperator & WO_IN)==0 ){ - pIdxCons->usable = 1; - } - break; - case 1: /* Constants with IN operators */ - assert( seenIn ); - pIdxCons->usable = (pTerm->prereqRight==0); - break; - case 2: /* Variables without IN */ - assert( seenVar ); - pIdxCons->usable = (pTerm->eOperator & WO_IN)==0; - break; - default: /* Variables with IN */ - assert( seenVar && seenIn ); - pIdxCons->usable = 1; - break; - } - } - memset(pUsage, 0, sizeof(pUsage[0])*pIdxInfo->nConstraint); - if( pIdxInfo->needToFreeIdxStr ) sqlite3_free(pIdxInfo->idxStr); - pIdxInfo->idxStr = 0; - pIdxInfo->idxNum = 0; - pIdxInfo->needToFreeIdxStr = 0; - pIdxInfo->orderByConsumed = 0; - pIdxInfo->estimatedCost = SQLITE_BIG_DBL / (double)2; - pIdxInfo->estimatedRows = 25; - rc = vtabBestIndex(pParse, pTab, pIdxInfo); - if( rc ) goto whereLoopAddVtab_exit; - pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint; - pNew->prereq = mExtra; - mxTerm = -1; - assert( pNew->nLSlot>=nConstraint ); - for(i=0; iaLTerm[i] = 0; - pNew->u.vtab.omitMask = 0; - for(i=0; i=0 ){ - j = pIdxCons->iTermOffset; - if( iTerm>=nConstraint - || j<0 - || j>=pWC->nTerm - || pNew->aLTerm[iTerm]!=0 - ){ - rc = SQLITE_ERROR; - sqlite3ErrorMsg(pParse, "%s.xBestIndex() malfunction", pTab->zName); - goto whereLoopAddVtab_exit; - } - testcase( iTerm==nConstraint-1 ); - testcase( j==0 ); - testcase( j==pWC->nTerm-1 ); - pTerm = &pWC->a[j]; - pNew->prereq |= pTerm->prereqRight; - assert( iTermnLSlot ); - pNew->aLTerm[iTerm] = pTerm; - if( iTerm>mxTerm ) mxTerm = iTerm; - testcase( iTerm==15 ); - testcase( iTerm==16 ); - if( iTerm<16 && pUsage[i].omit ) pNew->u.vtab.omitMask |= 1<eOperator & WO_IN)!=0 ){ - if( pUsage[i].omit==0 ){ - /* Do not attempt to use an IN constraint if the virtual table - ** says that the equivalent EQ constraint cannot be safely omitted. - ** If we do attempt to use such a constraint, some rows might be - ** repeated in the output. */ - break; - } - /* A virtual table that is constrained by an IN clause may not - ** consume the ORDER BY clause because (1) the order of IN terms - ** is not necessarily related to the order of output terms and - ** (2) Multiple outputs from a single IN value will not merge - ** together. */ - pIdxInfo->orderByConsumed = 0; - } - } - } - if( i>=nConstraint ){ - pNew->nLTerm = mxTerm+1; - assert( pNew->nLTerm<=pNew->nLSlot ); - pNew->u.vtab.idxNum = pIdxInfo->idxNum; - pNew->u.vtab.needFree = pIdxInfo->needToFreeIdxStr; - pIdxInfo->needToFreeIdxStr = 0; - pNew->u.vtab.idxStr = pIdxInfo->idxStr; - pNew->u.vtab.isOrdered = (u8)((pIdxInfo->nOrderBy!=0) - && pIdxInfo->orderByConsumed); - pNew->rSetup = 0; - pNew->rRun = sqlite3LogEstFromDouble(pIdxInfo->estimatedCost); - pNew->nOut = sqlite3LogEst(pIdxInfo->estimatedRows); - whereLoopInsert(pBuilder, pNew); - if( pNew->u.vtab.needFree ){ - sqlite3_free(pNew->u.vtab.idxStr); - pNew->u.vtab.needFree = 0; - } - } - } + /* First call xBestIndex() with all constraints usable. */ + WHERETRACE(0x40, (" VirtualOne: all usable\n")); + rc = whereLoopAddVirtualOne(pBuilder, mPrereq, ALLBITS, 0, p, mNoOmit, &bIn); -whereLoopAddVtab_exit: - if( pIdxInfo->needToFreeIdxStr ) sqlite3_free(pIdxInfo->idxStr); - sqlite3DbFree(db, pIdxInfo); + /* If the call to xBestIndex() with all terms enabled produced a plan + ** that does not require any source tables (IOW: a plan with mBest==0), + ** then there is no point in making any further calls to xBestIndex() + ** since they will all return the same result (if the xBestIndex() + ** implementation is sane). */ + if( rc==SQLITE_OK && (mBest = (pNew->prereq & ~mPrereq))!=0 ){ + int seenZero = 0; /* True if a plan with no prereqs seen */ + int seenZeroNoIN = 0; /* Plan with no prereqs and no IN(...) seen */ + Bitmask mPrev = 0; + Bitmask mBestNoIn = 0; + + /* If the plan produced by the earlier call uses an IN(...) term, call + ** xBestIndex again, this time with IN(...) terms disabled. */ + if( bIn ){ + WHERETRACE(0x40, (" VirtualOne: all usable w/o IN\n")); + rc = whereLoopAddVirtualOne( + pBuilder, mPrereq, ALLBITS, WO_IN, p, mNoOmit, &bIn); + assert( bIn==0 ); + mBestNoIn = pNew->prereq & ~mPrereq; + if( mBestNoIn==0 ){ + seenZero = 1; + seenZeroNoIN = 1; + } + } + + /* Call xBestIndex once for each distinct value of (prereqRight & ~mPrereq) + ** in the set of terms that apply to the current virtual table. */ + while( rc==SQLITE_OK ){ + int i; + Bitmask mNext = ALLBITS; + assert( mNext>0 ); + for(i=0; ia[p->aConstraint[i].iTermOffset].prereqRight & ~mPrereq + ); + if( mThis>mPrev && mThisprereq==mPrereq ){ + seenZero = 1; + if( bIn==0 ) seenZeroNoIN = 1; + } + } + + /* If the calls to xBestIndex() in the above loop did not find a plan + ** that requires no source tables at all (i.e. one guaranteed to be + ** usable), make a call here with all source tables disabled */ + if( rc==SQLITE_OK && seenZero==0 ){ + WHERETRACE(0x40, (" VirtualOne: all disabled\n")); + rc = whereLoopAddVirtualOne( + pBuilder, mPrereq, mPrereq, 0, p, mNoOmit, &bIn); + if( bIn==0 ) seenZeroNoIN = 1; + } + + /* If the calls to xBestIndex() have so far failed to find a plan + ** that requires no source tables at all and does not use an IN(...) + ** operator, make a final call to obtain one here. */ + if( rc==SQLITE_OK && seenZeroNoIN==0 ){ + WHERETRACE(0x40, (" VirtualOne: all disabled and w/o IN\n")); + rc = whereLoopAddVirtualOne( + pBuilder, mPrereq, mPrereq, WO_IN, p, mNoOmit, &bIn); + } + } + + if( p->needToFreeIdxStr ) sqlite3_free(p->idxStr); + sqlite3DbFree(pParse->db, p); return rc; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ @@ -113368,7 +132611,11 @@ whereLoopAddVtab_exit: ** Add WhereLoop entries to handle OR terms. This works for either ** btrees or virtual tables. */ -static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){ +static int whereLoopAddOr( + WhereLoopBuilder *pBuilder, + Bitmask mPrereq, + Bitmask mUnusable +){ WhereInfo *pWInfo = pBuilder->pWInfo; WhereClause *pWC; WhereLoop *pNew; @@ -113377,16 +132624,14 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){ int iCur; WhereClause tempWC; WhereLoopBuilder sSubBuild; - WhereOrSet sSum, sCur, sPrev; + WhereOrSet sSum, sCur; struct SrcList_item *pItem; pWC = pBuilder->pWC; - if( pWInfo->wctrlFlags & WHERE_AND_ONLY ) return SQLITE_OK; pWCEnd = pWC->a + pWC->nTerm; pNew = pBuilder->pNew; memset(&sSum, 0, sizeof(sSum)); pItem = pWInfo->pTabList->a + pNew->iTab; - if( !HasRowid(pItem->pTab) ) return SQLITE_OK; iCur = pItem->iCursor; for(pTerm=pWC->a; pTerma; pOrTermeOperator & WO_AND)!=0 ){ sSubBuild.pWC = &pOrTerm->u.pAndInfo->wc; @@ -113417,13 +132663,23 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){ continue; } sCur.n = 0; +#ifdef WHERETRACE_ENABLED + WHERETRACE(0x200, ("OR-term %d of %p has %d subterms:\n", + (int)(pOrTerm-pOrWC->a), pTerm, sSubBuild.pWC->nTerm)); + if( sqlite3WhereTrace & 0x400 ){ + sqlite3WhereClausePrint(sSubBuild.pWC); + } +#endif #ifndef SQLITE_OMIT_VIRTUALTABLE if( IsVirtual(pItem->pTab) ){ - rc = whereLoopAddVirtual(&sSubBuild, mExtra); + rc = whereLoopAddVirtual(&sSubBuild, mPrereq, mUnusable); }else #endif { - rc = whereLoopAddBtree(&sSubBuild, mExtra); + rc = whereLoopAddBtree(&sSubBuild, mPrereq); + } + if( rc==SQLITE_OK ){ + rc = whereLoopAddOr(&sSubBuild, mPrereq, mUnusable); } assert( rc==SQLITE_OK || sCur.n==0 ); if( sCur.n==0 ){ @@ -113433,6 +132689,7 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){ whereOrMove(&sSum, &sCur); once = 0; }else{ + WhereOrSet sPrev; whereOrMove(&sPrev, &sSum); sSum.n = 0; for(i=0; iiSortIdx = 0; memset(&pNew->u, 0, sizeof(pNew->u)); for(i=0; rc==SQLITE_OK && irRun = sSum.a[i].rRun + 18; + /* TUNING: Currently sSum.a[i].rRun is set to the sum of the costs + ** of all sub-scans required by the OR-scan. However, due to rounding + ** errors, it may be that the cost of the OR-scan is equal to its + ** most expensive sub-scan. Add the smallest possible penalty + ** (equivalent to multiplying the cost by 1.07) to ensure that + ** this does not happen. Otherwise, for WHERE clauses such as the + ** following where there is an index on "y": + ** + ** WHERE likelihood(x=?, 0.99) OR y=? + ** + ** the planner may elect to "OR" together a full-table scan and an + ** index lookup. And other similarly odd results. */ + pNew->rRun = sSum.a[i].rRun + 1; pNew->nOut = sSum.a[i].nOut; pNew->prereq = sSum.a[i].prereq; rc = whereLoopInsert(pBuilder, pNew); } + WHERETRACE(0x200, ("End processing OR-clause %p\n", pTerm)); } } return rc; @@ -113467,38 +132736,51 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){ */ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ WhereInfo *pWInfo = pBuilder->pWInfo; - Bitmask mExtra = 0; + Bitmask mPrereq = 0; Bitmask mPrior = 0; int iTab; SrcList *pTabList = pWInfo->pTabList; struct SrcList_item *pItem; + struct SrcList_item *pEnd = &pTabList->a[pWInfo->nLevel]; sqlite3 *db = pWInfo->pParse->db; - int nTabList = pWInfo->nLevel; int rc = SQLITE_OK; - u8 priorJoinType = 0; WhereLoop *pNew; + u8 priorJointype = 0; /* Loop over the tables in the join, from left to right */ pNew = pBuilder->pNew; whereLoopInit(pNew); - for(iTab=0, pItem=pTabList->a; iTaba; pItemiTab = iTab; - pNew->maskSelf = getMask(&pWInfo->sMaskSet, pItem->iCursor); - if( ((pItem->jointype|priorJoinType) & (JT_LEFT|JT_CROSS))!=0 ){ - mExtra = mPrior; + pNew->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, pItem->iCursor); + if( ((pItem->fg.jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){ + /* This condition is true when pItem is the FROM clause term on the + ** right-hand-side of a LEFT or CROSS JOIN. */ + mPrereq = mPrior; } - priorJoinType = pItem->jointype; + priorJointype = pItem->fg.jointype; +#ifndef SQLITE_OMIT_VIRTUALTABLE if( IsVirtual(pItem->pTab) ){ - rc = whereLoopAddVirtual(pBuilder, mExtra); - }else{ - rc = whereLoopAddBtree(pBuilder, mExtra); + struct SrcList_item *p; + for(p=&pItem[1]; pfg.jointype & (JT_LEFT|JT_CROSS)) ){ + mUnusable |= sqlite3WhereGetMask(&pWInfo->sMaskSet, p->iCursor); + } + } + rc = whereLoopAddVirtual(pBuilder, mPrereq, mUnusable); + }else +#endif /* SQLITE_OMIT_VIRTUALTABLE */ + { + rc = whereLoopAddBtree(pBuilder, mPrereq); } if( rc==SQLITE_OK ){ - rc = whereLoopAddOr(pBuilder, mExtra); + rc = whereLoopAddOr(pBuilder, mPrereq, mUnusable); } mPrior |= pNew->maskSelf; if( rc || db->mallocFailed ) break; } + whereLoopClear(db, pNew); return rc; } @@ -113506,25 +132788,25 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){ /* ** Examine a WherePath (with the addition of the extra WhereLoop of the 5th ** parameters) to see if it outputs rows in the requested ORDER BY -** (or GROUP BY) without requiring a separate sort operation. Return: +** (or GROUP BY) without requiring a separate sort operation. Return N: ** -** 0: ORDER BY is not satisfied. Sorting required -** 1: ORDER BY is satisfied. Omit sorting -** -1: Unknown at this time +** N>0: N terms of the ORDER BY clause are satisfied +** N==0: No terms of the ORDER BY clause are satisfied +** N<0: Unknown yet how many terms of ORDER BY might be satisfied. ** ** Note that processing for WHERE_GROUPBY and WHERE_DISTINCTBY is not as ** strict. With GROUP BY and DISTINCT the only requirement is that ** equivalent rows appear immediately adjacent to one another. GROUP BY -** and DISTINT do not require rows to appear in any particular order as long -** as equivelent rows are grouped together. Thus for GROUP BY and DISTINCT +** and DISTINCT do not require rows to appear in any particular order as long +** as equivalent rows are grouped together. Thus for GROUP BY and DISTINCT ** the pOrderBy terms can be matched in any order. With ORDER BY, the ** pOrderBy terms must be matched in strict left-to-right order. */ -static int wherePathSatisfiesOrderBy( +static i8 wherePathSatisfiesOrderBy( WhereInfo *pWInfo, /* The WHERE clause */ ExprList *pOrderBy, /* ORDER BY or GROUP BY or DISTINCT clause to check */ WherePath *pPath, /* The WherePath to check */ - u16 wctrlFlags, /* Might contain WHERE_GROUPBY or WHERE_DISTINCTBY */ + u16 wctrlFlags, /* WHERE_GROUPBY or _DISTINCTBY or _ORDERBY_LIMIT */ u16 nLoop, /* Number of entries in pPath->aLoop[] */ WhereLoop *pLast, /* Add this WhereLoop to the end of pPath->aLoop[] */ Bitmask *pRevMask /* OUT: Mask of WhereLoops to run in reverse order */ @@ -113535,6 +132817,7 @@ static int wherePathSatisfiesOrderBy( u8 isOrderDistinct; /* All prior WhereLoops are order-distinct */ u8 distinctColumns; /* True if the loop has UNIQUE NOT NULL columns */ u8 isMatch; /* iColumn matches a term of the ORDER BY clause */ + u16 eqOpMask; /* Allowed equality operators */ u16 nKeyCol; /* Number of key columns in pIndex */ u16 nColumn; /* Total number of ordered columns in the index */ u16 nOrderBy; /* Number terms in the ORDER BY clause */ @@ -113576,14 +132859,6 @@ static int wherePathSatisfiesOrderBy( */ assert( pOrderBy!=0 ); - - /* Sortability of virtual tables is determined by the xBestIndex method - ** of the virtual table itself */ - if( pLast->wsFlags & WHERE_VIRTUALTABLE ){ - testcase( nLoop>0 ); /* True when outer loops are one-row and match - ** no ORDER BY terms */ - return pLast->u.vtab.isOrdered; - } if( nLoop && OptimizationDisabled(db, SQLITE_OrderByIdxJoin) ) return 0; nOrderBy = pOrderBy->nExpr; @@ -113593,10 +132868,20 @@ static int wherePathSatisfiesOrderBy( obDone = MASKBIT(nOrderBy)-1; orderDistinctMask = 0; ready = 0; + eqOpMask = WO_EQ | WO_IS | WO_ISNULL; + if( wctrlFlags & WHERE_ORDERBY_LIMIT ) eqOpMask |= WO_IN; for(iLoop=0; isOrderDistinct && obSat0 ) ready |= pLoop->maskSelf; - pLoop = iLoopaLoop[iLoop] : pLast; - assert( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 ); + if( iLoopaLoop[iLoop]; + if( wctrlFlags & WHERE_ORDERBY_LIMIT ) continue; + }else{ + pLoop = pLast; + } + if( pLoop->wsFlags & WHERE_VIRTUALTABLE ){ + if( pLoop->u.vtab.isOrdered ) obSat = obDone; + break; + } iCur = pWInfo->pTabList->a[pLoop->iTab].iCursor; /* Mark off any ORDER BY term X that is a column in the table of @@ -113609,10 +132894,18 @@ static int wherePathSatisfiesOrderBy( pOBExpr = sqlite3ExprSkipCollate(pOrderBy->a[i].pExpr); if( pOBExpr->op!=TK_COLUMN ) continue; if( pOBExpr->iTable!=iCur ) continue; - pTerm = findTerm(&pWInfo->sWC, iCur, pOBExpr->iColumn, - ~ready, WO_EQ|WO_ISNULL, 0); + pTerm = sqlite3WhereFindTerm(&pWInfo->sWC, iCur, pOBExpr->iColumn, + ~ready, eqOpMask, 0); if( pTerm==0 ) continue; - if( (pTerm->eOperator&WO_EQ)!=0 && pOBExpr->iColumn>=0 ){ + if( pTerm->eOperator==WO_IN ){ + /* IN terms are only valid for sorting in the ORDER BY LIMIT + ** optimization, and then only if they are actually used + ** by the query plan */ + assert( wctrlFlags & WHERE_ORDERBY_LIMIT ); + for(j=0; jnLTerm && pTerm!=pLoop->aLTerm[j]; j++){} + if( j>=pLoop->nLTerm ) continue; + } + if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 && pOBExpr->iColumn>=0 ){ const char *z1, *z2; pColl = sqlite3ExprCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr); if( !pColl ) pColl = db->pDfltColl; @@ -113621,6 +132914,7 @@ static int wherePathSatisfiesOrderBy( if( !pColl ) pColl = db->pDfltColl; z2 = pColl->zName; if( sqlite3StrICmp(z1, z2)!=0 ) continue; + testcase( pTerm->pExpr->op==TK_IS ); } obSat |= MASKBIT(i); } @@ -113636,8 +132930,9 @@ static int wherePathSatisfiesOrderBy( nKeyCol = pIndex->nKeyCol; nColumn = pIndex->nColumn; assert( nColumn==nKeyCol+1 || !HasRowid(pIndex->pTable) ); - assert( pIndex->aiColumn[nColumn-1]==(-1) || !HasRowid(pIndex->pTable)); - isOrderDistinct = pIndex->onError!=OE_None; + assert( pIndex->aiColumn[nColumn-1]==XN_ROWID + || !HasRowid(pIndex->pTable)); + isOrderDistinct = IsUniqueIndex(pIndex); } /* Loop through all columns of the index and deal with the ones @@ -113646,18 +132941,42 @@ static int wherePathSatisfiesOrderBy( rev = revSet = 0; distinctColumns = 0; for(j=0; ju.btree.nEq - && pLoop->u.btree.nSkip==0 - && ((i = pLoop->aLTerm[j]->eOperator) & (WO_EQ|WO_ISNULL))!=0 - ){ - if( i & WO_ISNULL ){ - testcase( isOrderDistinct ); - isOrderDistinct = 0; + assert( j>=pLoop->u.btree.nEq + || (pLoop->aLTerm[j]==0)==(jnSkip) + ); + if( ju.btree.nEq && j>=pLoop->nSkip ){ + u16 eOp = pLoop->aLTerm[j]->eOperator; + + /* Skip over == and IS and ISNULL terms. (Also skip IN terms when + ** doing WHERE_ORDERBY_LIMIT processing). + ** + ** If the current term is a column of an ((?,?) IN (SELECT...)) + ** expression for which the SELECT returns more than one column, + ** check that it is the only column used by this loop. Otherwise, + ** if it is one of two or more, none of the columns can be + ** considered to match an ORDER BY term. */ + if( (eOp & eqOpMask)!=0 ){ + if( eOp & WO_ISNULL ){ + testcase( isOrderDistinct ); + isOrderDistinct = 0; + } + continue; + }else if( ALWAYS(eOp & WO_IN) ){ + /* ALWAYS() justification: eOp is an equality operator due to the + ** ju.btree.nEq constraint above. Any equality other + ** than WO_IN is captured by the previous "if". So this one + ** always has to be WO_IN. */ + Expr *pX = pLoop->aLTerm[j]->pExpr; + for(i=j+1; iu.btree.nEq; i++){ + if( pLoop->aLTerm[i]->pExpr==pX ){ + assert( (pLoop->aLTerm[i]->eOperator & WO_IN) ); + bOnce = 0; + break; + } + } } - continue; } /* Get the column number in the table (iColumn) and sort order @@ -113668,7 +132987,7 @@ static int wherePathSatisfiesOrderBy( revIdx = pIndex->aSortOrder[j]; if( iColumn==pIndex->pTable->iPKey ) iColumn = -1; }else{ - iColumn = -1; + iColumn = XN_ROWID; revIdx = 0; } @@ -113684,9 +133003,8 @@ static int wherePathSatisfiesOrderBy( } /* Find the ORDER BY term that corresponds to the j-th column - ** of the index and and mark that ORDER BY term off + ** of the index and mark that ORDER BY term off */ - bOnce = 1; isMatch = 0; for(i=0; bOnce && iop!=TK_COLUMN ) continue; - if( pOBExpr->iTable!=iCur ) continue; - if( pOBExpr->iColumn!=iColumn ) continue; + if( iColumn>=(-1) ){ + if( pOBExpr->op!=TK_COLUMN ) continue; + if( pOBExpr->iTable!=iCur ) continue; + if( pOBExpr->iColumn!=iColumn ) continue; + }else{ + if( sqlite3ExprCompare(pOBExpr,pIndex->aColExpr->a[j].pExpr,iCur) ){ + continue; + } + } if( iColumn>=0 ){ pColl = sqlite3ExprCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr); if( !pColl ) pColl = db->pDfltColl; @@ -113705,23 +133029,23 @@ static int wherePathSatisfiesOrderBy( isMatch = 1; break; } + if( isMatch && (wctrlFlags & WHERE_GROUPBY)==0 ){ + /* Make sure the sort order is compatible in an ORDER BY clause. + ** Sort order is irrelevant for a GROUP BY clause. */ + if( revSet ){ + if( (rev ^ revIdx)!=pOrderBy->a[i].sortOrder ) isMatch = 0; + }else{ + rev = revIdx ^ pOrderBy->a[i].sortOrder; + if( rev ) *pRevMask |= MASKBIT(iLoop); + revSet = 1; + } + } if( isMatch ){ - if( iColumn<0 ){ + if( iColumn==XN_ROWID ){ testcase( distinctColumns==0 ); distinctColumns = 1; } obSat |= MASKBIT(i); - if( (pWInfo->wctrlFlags & WHERE_GROUPBY)==0 ){ - /* Make sure the sort order is compatible in an ORDER BY clause. - ** Sort order is irrelevant for a GROUP BY clause. */ - if( revSet ){ - if( (rev ^ revIdx)!=pOrderBy->a[i].sortOrder ) return 0; - }else{ - rev = revIdx ^ pOrderBy->a[i].sortOrder; - if( rev ) *pRevMask |= MASKBIT(iLoop); - revSet = 1; - } - } }else{ /* No match found */ if( j==0 || jmaskSelf; for(i=0; ia[i].pExpr; - if( (exprTableUsage(&pWInfo->sMaskSet, p)&~orderDistinctMask)==0 ){ + mTerm = sqlite3WhereExprUsage(&pWInfo->sMaskSet,p); + if( mTerm==0 && !sqlite3ExprIsConstant(p) ) continue; + if( (mTerm&~orderDistinctMask)==0 ){ obSat |= MASKBIT(i); } } } } /* End the loop over all WhereLoops from outer-most down to inner-most */ - if( obSat==obDone ) return 1; - if( !isOrderDistinct ) return 0; + if( obSat==obDone ) return (i8)nOrderBy; + if( !isOrderDistinct ){ + for(i=nOrderBy-1; i>0; i--){ + Bitmask m = MASKBIT(i) - 1; + if( (obSat&m)==m ) return i; + } + return 0; + } return -1; } + +/* +** If the WHERE_GROUPBY flag is set in the mask passed to sqlite3WhereBegin(), +** the planner assumes that the specified pOrderBy list is actually a GROUP +** BY clause - and so any order that groups rows as required satisfies the +** request. +** +** Normally, in this case it is not possible for the caller to determine +** whether or not the rows are really being delivered in sorted order, or +** just in some other order that provides the required grouping. However, +** if the WHERE_SORTBYGROUP flag is also passed to sqlite3WhereBegin(), then +** this function may be called on the returned WhereInfo object. It returns +** true if the rows really will be sorted in the specified order, or false +** otherwise. +** +** For example, assuming: +** +** CREATE INDEX i1 ON t1(x, Y); +** +** then +** +** SELECT * FROM t1 GROUP BY x,y ORDER BY x,y; -- IsSorted()==1 +** SELECT * FROM t1 GROUP BY y,x ORDER BY y,x; -- IsSorted()==0 +*/ +SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo *pWInfo){ + assert( pWInfo->wctrlFlags & WHERE_GROUPBY ); + assert( pWInfo->wctrlFlags & WHERE_SORTBYGROUP ); + return pWInfo->sorted; +} + #ifdef WHERETRACE_ENABLED /* For debugging use only: */ static const char *wherePathName(WherePath *pPath, int nLoop, WhereLoop *pLast){ @@ -113767,6 +133130,43 @@ static const char *wherePathName(WherePath *pPath, int nLoop, WhereLoop *pLast){ } #endif +/* +** Return the cost of sorting nRow rows, assuming that the keys have +** nOrderby columns and that the first nSorted columns are already in +** order. +*/ +static LogEst whereSortingCost( + WhereInfo *pWInfo, + LogEst nRow, + int nOrderBy, + int nSorted +){ + /* TUNING: Estimated cost of a full external sort, where N is + ** the number of rows to sort is: + ** + ** cost = (3.0 * N * log(N)). + ** + ** Or, if the order-by clause has X terms but only the last Y + ** terms are out of order, then block-sorting will reduce the + ** sorting cost to: + ** + ** cost = (3.0 * N * log(N)) * (Y/X) + ** + ** The (Y/X) term is implemented using stack variable rScale + ** below. */ + LogEst rScale, rSortCost; + assert( nOrderBy>0 && 66==sqlite3LogEst(100) ); + rScale = sqlite3LogEst((nOrderBy-nSorted)*100/nOrderBy) - 66; + rSortCost = nRow + rScale + 16; + + /* Multiple by log(M) where M is the number of output rows. + ** Use the LIMIT for M if it is smaller */ + if( (pWInfo->wctrlFlags & WHERE_USE_LIMIT)!=0 && pWInfo->iLimitiLimit; + } + rSortCost += estLog(nRow); + return rSortCost; +} /* ** Given the list of WhereLoop objects at pWInfo->pLoops, this routine @@ -113788,11 +133188,9 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ int iLoop; /* Loop counter over the terms of the join */ int ii, jj; /* Loop counters */ int mxI = 0; /* Index of next entry to replace */ - LogEst rCost; /* Cost of a path */ - LogEst nOut; /* Number of outputs */ + int nOrderBy; /* Number of ORDER BY clause terms */ LogEst mxCost = 0; /* Maximum cost of a set of paths */ - LogEst mxOut = 0; /* Maximum nOut value on the set of paths */ - LogEst rSortCost; /* Cost to do a sort */ + LogEst mxUnsorted = 0; /* Maximum unsorted cost of a set of path */ int nTo, nFrom; /* Number of valid entries in aTo[] and aFrom[] */ WherePath *aFrom; /* All nFrom paths at the previous level */ WherePath *aTo; /* The nTo best paths at the current level */ @@ -113800,7 +133198,9 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ WherePath *pTo; /* An element of aTo[] that we are working on */ WhereLoop *pWLoop; /* One of the WhereLoop objects */ WhereLoop **pX; /* Used to divy up the pSpace memory */ + LogEst *aSortCost = 0; /* Sorting and partial sorting costs */ char *pSpace; /* Temporary memory used by this routine */ + int nSpace; /* Bytes of space allocated at pSpace */ pParse = pWInfo->pParse; db = pParse->db; @@ -113808,14 +133208,26 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ /* TUNING: For simple queries, only the best path is tracked. ** For 2-way joins, the 5 best paths are followed. ** For joins of 3 or more tables, track the 10 best paths */ - mxChoice = (nLoop==1) ? 1 : (nLoop==2 ? 5 : 10); + mxChoice = (nLoop<=1) ? 1 : (nLoop==2 ? 5 : 10); assert( nLoop<=pWInfo->pTabList->nSrc ); - WHERETRACE(0x002, ("---- begin solver\n")); + WHERETRACE(0x002, ("---- begin solver. (nRowEst=%d)\n", nRowEst)); - /* Allocate and initialize space for aTo and aFrom */ - ii = (sizeof(WherePath)+sizeof(WhereLoop*)*nLoop)*mxChoice*2; - pSpace = sqlite3DbMallocRaw(db, ii); - if( pSpace==0 ) return SQLITE_NOMEM; + /* If nRowEst is zero and there is an ORDER BY clause, ignore it. In this + ** case the purpose of this call is to estimate the number of rows returned + ** by the overall query. Once this estimate has been obtained, the caller + ** will invoke this function a second time, passing the estimate as the + ** nRowEst parameter. */ + if( pWInfo->pOrderBy==0 || nRowEst==0 ){ + nOrderBy = 0; + }else{ + nOrderBy = pWInfo->pOrderBy->nExpr; + } + + /* Allocate and initialize space for aTo, aFrom and aSortCost[] */ + nSpace = (sizeof(WherePath)+sizeof(WhereLoop*)*nLoop)*mxChoice*2; + nSpace += sizeof(LogEst) * nOrderBy; + pSpace = sqlite3DbMallocRawNN(db, nSpace); + if( pSpace==0 ) return SQLITE_NOMEM_BKPT; aTo = (WherePath*)pSpace; aFrom = aTo+mxChoice; memset(aFrom, 0, sizeof(aFrom[0])); @@ -113823,27 +133235,35 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ for(ii=mxChoice*2, pFrom=aTo; ii>0; ii--, pFrom++, pX += nLoop){ pFrom->aLoop = pX; } + if( nOrderBy ){ + /* If there is an ORDER BY clause and it is not being ignored, set up + ** space for the aSortCost[] array. Each element of the aSortCost array + ** is either zero - meaning it has not yet been initialized - or the + ** cost of sorting nRowEst rows of data where the first X terms of + ** the ORDER BY clause are already in order, where X is the array + ** index. */ + aSortCost = (LogEst*)pX; + memset(aSortCost, 0, sizeof(LogEst) * nOrderBy); + } + assert( aSortCost==0 || &pSpace[nSpace]==(char*)&aSortCost[nOrderBy] ); + assert( aSortCost!=0 || &pSpace[nSpace]==(char*)pX ); /* Seed the search with a single WherePath containing zero WhereLoops. ** - ** TUNING: Do not let the number of iterations go above 25. If the cost - ** of computing an automatic index is not paid back within the first 25 + ** TUNING: Do not let the number of iterations go above 28. If the cost + ** of computing an automatic index is not paid back within the first 28 ** rows, then do not use the automatic index. */ - aFrom[0].nRow = MIN(pParse->nQueryLoop, 46); assert( 46==sqlite3LogEst(25) ); + aFrom[0].nRow = MIN(pParse->nQueryLoop, 48); assert( 48==sqlite3LogEst(28) ); nFrom = 1; - - /* Precompute the cost of sorting the final result set, if the caller - ** to sqlite3WhereBegin() was concerned about sorting */ - rSortCost = 0; - if( pWInfo->pOrderBy==0 || nRowEst==0 ){ - aFrom[0].isOrderedValid = 1; - }else{ - /* TUNING: Estimated cost of sorting is 48*N*log2(N) where N is the - ** number of output rows. The 48 is the expected size of a row to sort. - ** FIXME: compute a better estimate of the 48 multiplier based on the - ** result set expressions. */ - rSortCost = nRowEst + estLog(nRowEst); - WHERETRACE(0x002,("---- sort cost=%-3d\n", rSortCost)); + assert( aFrom[0].isOrdered==0 ); + if( nOrderBy ){ + /* If nLoop is zero, then there are no FROM terms in the query. Since + ** in this case the query may return a maximum of one row, the results + ** are already in the requested order. Set isOrdered to nOrderBy to + ** indicate this. Or, if nLoop is greater than zero, set isOrdered to + ** -1, indicating that the result set may or may not be ordered, + ** depending on the loops added to the current plan. */ + aFrom[0].isOrdered = nLoop>0 ? -1 : nOrderBy; } /* Compute successively longer WherePaths using the previous generation @@ -113853,60 +133273,88 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ nTo = 0; for(ii=0, pFrom=aFrom; iipLoops; pWLoop; pWLoop=pWLoop->pNextLoop){ - Bitmask maskNew; - Bitmask revMask = 0; - u8 isOrderedValid = pFrom->isOrderedValid; - u8 isOrdered = pFrom->isOrdered; + LogEst nOut; /* Rows visited by (pFrom+pWLoop) */ + LogEst rCost; /* Cost of path (pFrom+pWLoop) */ + LogEst rUnsorted; /* Unsorted cost of (pFrom+pWLoop) */ + i8 isOrdered = pFrom->isOrdered; /* isOrdered for (pFrom+pWLoop) */ + Bitmask maskNew; /* Mask of src visited by (..) */ + Bitmask revMask = 0; /* Mask of rev-order loops for (..) */ + if( (pWLoop->prereq & ~pFrom->maskLoop)!=0 ) continue; if( (pWLoop->maskSelf & pFrom->maskLoop)!=0 ) continue; + if( (pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 && pFrom->nRow<10 ){ + /* Do not use an automatic index if the this loop is expected + ** to run less than 2 times. */ + assert( 10==sqlite3LogEst(2) ); + continue; + } /* At this point, pWLoop is a candidate to be the next loop. ** Compute its cost */ - rCost = sqlite3LogEstAdd(pWLoop->rSetup,pWLoop->rRun + pFrom->nRow); - rCost = sqlite3LogEstAdd(rCost, pFrom->rCost); + rUnsorted = sqlite3LogEstAdd(pWLoop->rSetup,pWLoop->rRun + pFrom->nRow); + rUnsorted = sqlite3LogEstAdd(rUnsorted, pFrom->rUnsorted); nOut = pFrom->nRow + pWLoop->nOut; maskNew = pFrom->maskLoop | pWLoop->maskSelf; - if( !isOrderedValid ){ - switch( wherePathSatisfiesOrderBy(pWInfo, + if( isOrdered<0 ){ + isOrdered = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, pFrom, pWInfo->wctrlFlags, - iLoop, pWLoop, &revMask) ){ - case 1: /* Yes. pFrom+pWLoop does satisfy the ORDER BY clause */ - isOrdered = 1; - isOrderedValid = 1; - break; - case 0: /* No. pFrom+pWLoop will require a separate sort */ - isOrdered = 0; - isOrderedValid = 1; - rCost = sqlite3LogEstAdd(rCost, rSortCost); - break; - default: /* Cannot tell yet. Try again on the next iteration */ - break; - } + iLoop, pWLoop, &revMask); }else{ revMask = pFrom->revLoop; } - /* Check to see if pWLoop should be added to the mxChoice best so far */ + if( isOrdered>=0 && isOrderedisOrdered^isOrdered)&0x80)==0" is equivalent + ** to (pTo->isOrdered==(-1))==(isOrdered==(-1))" for the range + ** of legal values for isOrdered, -1..64. + */ for(jj=0, pTo=aTo; jjmaskLoop==maskNew - && pTo->isOrderedValid==isOrderedValid - && ((pTo->rCost<=rCost && pTo->nRow<=nOut) || - (pTo->rCost>=rCost && pTo->nRow>=nOut)) + && ((pTo->isOrdered^isOrdered)&0x80)==0 ){ testcase( jj==nTo-1 ); break; } } if( jj>=nTo ){ - if( nTo>=mxChoice && rCost>=mxCost ){ + /* None of the existing best-so-far paths match the candidate. */ + if( nTo>=mxChoice + && (rCost>mxCost || (rCost==mxCost && rUnsorted>=mxUnsorted)) + ){ + /* The current candidate is no better than any of the mxChoice + ** paths currently in the best-so-far buffer. So discard + ** this candidate as not viable. */ #ifdef WHERETRACE_ENABLED /* 0x4 */ if( sqlite3WhereTrace&0x4 ){ sqlite3DebugPrintf("Skip %s cost=%-3d,%3d order=%c\n", wherePathName(pFrom, iLoop, pWLoop), rCost, nOut, - isOrderedValid ? (isOrdered ? 'Y' : 'N') : '?'); + isOrdered>=0 ? isOrdered+'0' : '?'); } #endif continue; } - /* Add a new Path to the aTo[] set */ + /* If we reach this points it means that the new candidate path + ** needs to be added to the set of best-so-far paths. */ if( nTo=0 ? isOrdered+'0' : '?'); } #endif }else{ - if( pTo->rCost<=rCost && pTo->nRow<=nOut ){ + /* Control reaches here if best-so-far path pTo=aTo[jj] covers the + ** same set of loops and has the sam isOrdered setting as the + ** candidate path. Check to see if the candidate should replace + ** pTo or if the candidate should be skipped */ + if( pTo->rCostrCost==rCost && pTo->nRow<=nOut) ){ #ifdef WHERETRACE_ENABLED /* 0x4 */ if( sqlite3WhereTrace&0x4 ){ sqlite3DebugPrintf( "Skip %s cost=%-3d,%3d order=%c", wherePathName(pFrom, iLoop, pWLoop), rCost, nOut, - isOrderedValid ? (isOrdered ? 'Y' : 'N') : '?'); + isOrdered>=0 ? isOrdered+'0' : '?'); sqlite3DebugPrintf(" vs %s cost=%-3d,%d order=%c\n", wherePathName(pTo, iLoop+1, 0), pTo->rCost, pTo->nRow, - pTo->isOrderedValid ? (pTo->isOrdered ? 'Y' : 'N') : '?'); + pTo->isOrdered>=0 ? pTo->isOrdered+'0' : '?'); } #endif + /* Discard the candidate path from further consideration */ testcase( pTo->rCost==rCost ); continue; } testcase( pTo->rCost==rCost+1 ); - /* A new and better score for a previously created equivalent path */ + /* Control reaches here if the candidate path is better than the + ** pTo path. Replace pTo with the candidate. */ #ifdef WHERETRACE_ENABLED /* 0x4 */ if( sqlite3WhereTrace&0x4 ){ sqlite3DebugPrintf( "Update %s cost=%-3d,%3d order=%c", wherePathName(pFrom, iLoop, pWLoop), rCost, nOut, - isOrderedValid ? (isOrdered ? 'Y' : 'N') : '?'); + isOrdered>=0 ? isOrdered+'0' : '?'); sqlite3DebugPrintf(" was %s cost=%-3d,%3d order=%c\n", wherePathName(pTo, iLoop+1, 0), pTo->rCost, pTo->nRow, - pTo->isOrderedValid ? (pTo->isOrdered ? 'Y' : 'N') : '?'); + pTo->isOrdered>=0 ? pTo->isOrdered+'0' : '?'); } #endif } @@ -113957,18 +133411,20 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ pTo->revLoop = revMask; pTo->nRow = nOut; pTo->rCost = rCost; - pTo->isOrderedValid = isOrderedValid; + pTo->rUnsorted = rUnsorted; pTo->isOrdered = isOrdered; memcpy(pTo->aLoop, pFrom->aLoop, sizeof(WhereLoop*)*iLoop); pTo->aLoop[iLoop] = pWLoop; if( nTo>=mxChoice ){ mxI = 0; mxCost = aTo[0].rCost; - mxOut = aTo[0].nRow; + mxUnsorted = aTo[0].nRow; for(jj=1, pTo=&aTo[1]; jjrCost>mxCost || (pTo->rCost==mxCost && pTo->nRow>mxOut) ){ + if( pTo->rCost>mxCost + || (pTo->rCost==mxCost && pTo->rUnsorted>mxUnsorted) + ){ mxCost = pTo->rCost; - mxOut = pTo->nRow; + mxUnsorted = pTo->rUnsorted; mxI = jj; } } @@ -113977,13 +133433,13 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ } #ifdef WHERETRACE_ENABLED /* >=2 */ - if( sqlite3WhereTrace>=2 ){ + if( sqlite3WhereTrace & 0x02 ){ sqlite3DebugPrintf("---- after round %d ----\n", iLoop); for(ii=0, pTo=aTo; iirCost, pTo->nRow, - pTo->isOrderedValid ? (pTo->isOrdered ? 'Y' : 'N') : '?'); - if( pTo->isOrderedValid && pTo->isOrdered ){ + pTo->isOrdered>=0 ? (pTo->isOrdered+'0') : '?'); + if( pTo->isOrdered>0 ){ sqlite3DebugPrintf(" rev=0x%llx\n", pTo->revLoop); }else{ sqlite3DebugPrintf("\n"); @@ -114024,18 +133480,56 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){ && nRowEst ){ Bitmask notUsed; - int rc = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pResultSet, pFrom, + int rc = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pDistinctSet, pFrom, WHERE_DISTINCTBY, nLoop-1, pFrom->aLoop[nLoop-1], ¬Used); - if( rc==1 ) pWInfo->eDistinct = WHERE_DISTINCT_ORDERED; - } - if( pFrom->isOrdered ){ - if( pWInfo->wctrlFlags & WHERE_DISTINCTBY ){ + if( rc==pWInfo->pDistinctSet->nExpr ){ pWInfo->eDistinct = WHERE_DISTINCT_ORDERED; - }else{ - pWInfo->bOBSat = 1; - pWInfo->revMask = pFrom->revLoop; } } + if( pWInfo->pOrderBy ){ + if( pWInfo->wctrlFlags & WHERE_DISTINCTBY ){ + if( pFrom->isOrdered==pWInfo->pOrderBy->nExpr ){ + pWInfo->eDistinct = WHERE_DISTINCT_ORDERED; + } + }else{ + pWInfo->nOBSat = pFrom->isOrdered; + pWInfo->revMask = pFrom->revLoop; + if( pWInfo->nOBSat<=0 ){ + pWInfo->nOBSat = 0; + if( nLoop>0 ){ + u32 wsFlags = pFrom->aLoop[nLoop-1]->wsFlags; + if( (wsFlags & WHERE_ONEROW)==0 + && (wsFlags&(WHERE_IPK|WHERE_COLUMN_IN))!=(WHERE_IPK|WHERE_COLUMN_IN) + ){ + Bitmask m = 0; + int rc = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, pFrom, + WHERE_ORDERBY_LIMIT, nLoop-1, pFrom->aLoop[nLoop-1], &m); + testcase( wsFlags & WHERE_IPK ); + testcase( wsFlags & WHERE_COLUMN_IN ); + if( rc==pWInfo->pOrderBy->nExpr ){ + pWInfo->bOrderedInnerLoop = 1; + pWInfo->revMask = m; + } + } + } + } + } + if( (pWInfo->wctrlFlags & WHERE_SORTBYGROUP) + && pWInfo->nOBSat==pWInfo->pOrderBy->nExpr && nLoop>0 + ){ + Bitmask revMask = 0; + int nOrder = wherePathSatisfiesOrderBy(pWInfo, pWInfo->pOrderBy, + pFrom, 0, nLoop-1, pFrom->aLoop[nLoop-1], &revMask + ); + assert( pWInfo->sorted==0 ); + if( nOrder==pWInfo->pOrderBy->nExpr ){ + pWInfo->sorted = 1; + pWInfo->revMask = revMask; + } + } + } + + pWInfo->nRowOut = pFrom->nRow; /* Free temporary memory and return success */ @@ -114064,21 +133558,22 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ int j; Table *pTab; Index *pIdx; - + pWInfo = pBuilder->pWInfo; - if( pWInfo->wctrlFlags & WHERE_FORCE_TABLE ) return 0; + if( pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE ) return 0; assert( pWInfo->pTabList->nSrc>=1 ); pItem = pWInfo->pTabList->a; pTab = pItem->pTab; if( IsVirtual(pTab) ) return 0; - if( pItem->zIndex ) return 0; + if( pItem->fg.isIndexedBy ) return 0; iCur = pItem->iCursor; pWC = &pWInfo->sWC; pLoop = pBuilder->pNew; pLoop->wsFlags = 0; - pLoop->u.btree.nSkip = 0; - pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ, 0); + pLoop->nSkip = 0; + pTerm = sqlite3WhereFindTerm(pWC, iCur, -1, 0, WO_EQ|WO_IS, 0); if( pTerm ){ + testcase( pTerm->eOperator & WO_IS ); pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_IPK|WHERE_ONEROW; pLoop->aLTerm[0] = pTerm; pLoop->nLTerm = 1; @@ -114087,15 +133582,17 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ pLoop->rRun = 33; /* 33==sqlite3LogEst(10) */ }else{ for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + int opMask; assert( pLoop->aLTermSpace==pLoop->aLTerm ); - assert( ArraySize(pLoop->aLTermSpace)==4 ); - if( pIdx->onError==OE_None + if( !IsUniqueIndex(pIdx) || pIdx->pPartIdxWhere!=0 || pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace) ) continue; + opMask = pIdx->uniqNotNull ? (WO_EQ|WO_IS) : WO_EQ; for(j=0; jnKeyCol; j++){ - pTerm = findTerm(pWC, iCur, pIdx->aiColumn[j], 0, WO_EQ, pIdx); + pTerm = sqlite3WhereFindTerm(pWC, iCur, j, 0, opMask, pIdx); if( pTerm==0 ) break; + testcase( pTerm->eOperator & WO_IS ); pLoop->aLTerm[j] = pTerm; } if( j!=pIdx->nKeyCol ) continue; @@ -114114,10 +133611,10 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ if( pLoop->wsFlags ){ pLoop->nOut = (LogEst)1; pWInfo->a[0].pWLoop = pLoop; - pLoop->maskSelf = getMask(&pWInfo->sMaskSet, iCur); + pLoop->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, iCur); pWInfo->a[0].iTabCur = iCur; pWInfo->nRowOut = 1; - if( pWInfo->pOrderBy ) pWInfo->bOBSat = 1; + if( pWInfo->pOrderBy ) pWInfo->nOBSat = pWInfo->pOrderBy->nExpr; if( pWInfo->wctrlFlags & WHERE_WANT_DISTINCT ){ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; } @@ -114210,7 +133707,7 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ ** is called from an UPDATE or DELETE statement, then pOrderBy is NULL. ** ** The iIdxCur parameter is the cursor number of an index. If -** WHERE_ONETABLE_ONLY is set, iIdxCur is the cursor number of an index +** WHERE_OR_SUBCLAUSE is set, iIdxCur is the cursor number of an index ** to use for OR clause processing. The WHERE clause should use this ** specific cursor. If WHERE_ONEPASS_DESIRED is set, then iIdxCur is ** the first cursor in an array of cursors for all indices. iIdxCur should @@ -114218,13 +133715,14 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){ ** used. */ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( - Parse *pParse, /* The parser context */ - SrcList *pTabList, /* FROM clause: A list of all tables to be scanned */ - Expr *pWhere, /* The WHERE clause */ - ExprList *pOrderBy, /* An ORDER BY clause, or NULL */ - ExprList *pResultSet, /* Result set of the query */ - u16 wctrlFlags, /* One of the WHERE_* flags defined in sqliteInt.h */ - int iIdxCur /* If WHERE_ONETABLE_ONLY is set, index cursor number */ + Parse *pParse, /* The parser context */ + SrcList *pTabList, /* FROM clause: A list of all tables to be scanned */ + Expr *pWhere, /* The WHERE clause */ + ExprList *pOrderBy, /* An ORDER BY (or GROUP BY) clause, or NULL */ + ExprList *pDistinctSet, /* Try not to output two rows that duplicate these */ + u16 wctrlFlags, /* The WHERE_* flags defined in sqliteInt.h */ + int iAuxArg /* If WHERE_OR_SUBCLAUSE is set, index cursor number + ** If WHERE_USE_LIMIT, then the limit amount */ ){ int nByteWInfo; /* Num. bytes allocated for WhereInfo struct */ int nTabList; /* Number of elements in pTabList */ @@ -114238,11 +133736,24 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( int ii; /* Loop counter */ sqlite3 *db; /* Database connection */ int rc; /* Return code */ + u8 bFordelete = 0; /* OPFLAG_FORDELETE or zero, as appropriate */ + assert( (wctrlFlags & WHERE_ONEPASS_MULTIROW)==0 || ( + (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 + && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 + )); + + /* Only one of WHERE_OR_SUBCLAUSE or WHERE_USE_LIMIT */ + assert( (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 + || (wctrlFlags & WHERE_USE_LIMIT)==0 ); /* Variable initialization */ db = pParse->db; memset(&sWLB, 0, sizeof(sWLB)); + + /* An ORDER/GROUP BY clause of more than 63 terms cannot be optimized */ + testcase( pOrderBy && pOrderBy->nExpr==BMS-1 ); + if( pOrderBy && pOrderBy->nExpr>=BMS ) pOrderBy = 0; sWLB.pOrderBy = pOrderBy; /* Disable the DISTINCT optimization if SQLITE_DistinctOpt is set via @@ -114261,11 +133772,11 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( } /* This function normally generates a nested loop for all tables in - ** pTabList. But if the WHERE_ONETABLE_ONLY flag is set, then we should + ** pTabList. But if the WHERE_OR_SUBCLAUSE flag is set, then we should ** only generate code for the first table in pTabList and assume that ** any cursors associated with subsequent tables are uninitialized. */ - nTabList = (wctrlFlags & WHERE_ONETABLE_ONLY) ? 1 : pTabList->nSrc; + nTabList = (wctrlFlags & WHERE_OR_SUBCLAUSE) ? 1 : pTabList->nSrc; /* Allocate and initialize the WhereInfo structure that will become the ** return value. A single allocation is used to store the WhereInfo @@ -114275,21 +133786,26 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( ** some architectures. Hence the ROUND8() below. */ nByteWInfo = ROUND8(sizeof(WhereInfo)+(nTabList-1)*sizeof(WhereLevel)); - pWInfo = sqlite3DbMallocZero(db, nByteWInfo + sizeof(WhereLoop)); + pWInfo = sqlite3DbMallocRawNN(db, nByteWInfo + sizeof(WhereLoop)); if( db->mallocFailed ){ sqlite3DbFree(db, pWInfo); pWInfo = 0; goto whereBeginError; } - pWInfo->aiCurOnePass[0] = pWInfo->aiCurOnePass[1] = -1; - pWInfo->nLevel = nTabList; pWInfo->pParse = pParse; pWInfo->pTabList = pTabList; pWInfo->pOrderBy = pOrderBy; - pWInfo->pResultSet = pResultSet; - pWInfo->iBreak = sqlite3VdbeMakeLabel(v); + pWInfo->pDistinctSet = pDistinctSet; + pWInfo->aiCurOnePass[0] = pWInfo->aiCurOnePass[1] = -1; + pWInfo->nLevel = nTabList; + pWInfo->iBreak = pWInfo->iContinue = sqlite3VdbeMakeLabel(v); pWInfo->wctrlFlags = wctrlFlags; + pWInfo->iLimit = iAuxArg; pWInfo->savedNQueryLoop = pParse->nQueryLoop; + memset(&pWInfo->nOBSat, 0, + offsetof(WhereInfo,sWC) - offsetof(WhereInfo,nOBSat)); + memset(&pWInfo->a[0], 0, sizeof(WhereLoop)+nTabList*sizeof(WhereLevel)); + assert( pWInfo->eOnePass==ONEPASS_OFF ); /* ONEPASS defaults to OFF */ pMaskSet = &pWInfo->sMaskSet; sWLB.pWInfo = pWInfo; sWLB.pWC = &pWInfo->sWC; @@ -114304,9 +133820,8 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( ** subexpression is separated by an AND operator. */ initMaskSet(pMaskSet); - whereClauseInit(&pWInfo->sWC, pWInfo); - whereSplit(&pWInfo->sWC, pWhere, TK_AND); - sqlite3CodeVerifySchema(pParse, -1); /* Insert the cookie verifier Goto */ + sqlite3WhereClauseInit(&pWInfo->sWC, pWInfo); + sqlite3WhereSplit(&pWInfo->sWC, pWhere, TK_AND); /* Special case: a WHERE clause that is constant. Evaluate the ** expression and either jump over all of the code or fall thru. @@ -114322,7 +133837,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* Special case: No FROM clause */ if( nTabList==0 ){ - if( pOrderBy ) pWInfo->bOBSat = 1; + if( pOrderBy ) pWInfo->nOBSat = pOrderBy->nExpr; if( wctrlFlags & WHERE_WANT_DISTINCT ){ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; } @@ -114330,101 +133845,68 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* Assign a bit from the bitmask to every term in the FROM clause. ** - ** When assigning bitmask values to FROM clause cursors, it must be - ** the case that if X is the bitmask for the N-th FROM clause term then - ** the bitmask for all FROM clause terms to the left of the N-th term - ** is (X-1). An expression from the ON clause of a LEFT JOIN can use - ** its Expr.iRightJoinTable value to find the bitmask of the right table - ** of the join. Subtracting one from the right table bitmask gives a - ** bitmask for all tables to the left of the join. Knowing the bitmask - ** for all tables to the left of a left join is important. Ticket #3015. + ** The N-th term of the FROM clause is assigned a bitmask of 1<nSrc tables in ** pTabList, not just the first nTabList tables. nTabList is normally ** equal to pTabList->nSrc but might be shortened to 1 if the - ** WHERE_ONETABLE_ONLY flag is set. + ** WHERE_OR_SUBCLAUSE flag is set. */ for(ii=0; iinSrc; ii++){ createMask(pMaskSet, pTabList->a[ii].iCursor); + sqlite3WhereTabFuncArgs(pParse, &pTabList->a[ii], &pWInfo->sWC); } -#ifndef NDEBUG - { - Bitmask toTheLeft = 0; - for(ii=0; iinSrc; ii++){ - Bitmask m = getMask(pMaskSet, pTabList->a[ii].iCursor); - assert( (m-1)==toTheLeft ); - toTheLeft |= m; - } +#ifdef SQLITE_DEBUG + for(ii=0; iinSrc; ii++){ + Bitmask m = sqlite3WhereGetMask(pMaskSet, pTabList->a[ii].iCursor); + assert( m==MASKBIT(ii) ); } #endif - /* Analyze all of the subexpressions. Note that exprAnalyze() might - ** add new virtual terms onto the end of the WHERE clause. We do not - ** want to analyze these virtual terms, so start analyzing at the end - ** and work forward so that the added virtual terms are never processed. - */ - exprAnalyzeAll(pTabList, &pWInfo->sWC); - if( db->mallocFailed ){ - goto whereBeginError; - } - - /* If the ORDER BY (or GROUP BY) clause contains references to general - ** expressions, then we won't be able to satisfy it using indices, so - ** go ahead and disable it now. - */ - if( pOrderBy && (wctrlFlags & WHERE_WANT_DISTINCT)!=0 ){ - for(ii=0; iinExpr; ii++){ - Expr *pExpr = sqlite3ExprSkipCollate(pOrderBy->a[ii].pExpr); - if( pExpr->op!=TK_COLUMN ){ - pWInfo->pOrderBy = pOrderBy = 0; - break; - }else if( pExpr->iColumn<0 ){ - break; - } - } - } + /* Analyze all of the subexpressions. */ + sqlite3WhereExprAnalyze(pTabList, &pWInfo->sWC); + if( db->mallocFailed ) goto whereBeginError; if( wctrlFlags & WHERE_WANT_DISTINCT ){ - if( isDistinctRedundant(pParse, pTabList, &pWInfo->sWC, pResultSet) ){ + if( isDistinctRedundant(pParse, pTabList, &pWInfo->sWC, pDistinctSet) ){ /* The DISTINCT marking is pointless. Ignore it. */ pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE; }else if( pOrderBy==0 ){ /* Try to ORDER BY the result set to make distinct processing easier */ pWInfo->wctrlFlags |= WHERE_DISTINCTBY; - pWInfo->pOrderBy = pResultSet; + pWInfo->pOrderBy = pDistinctSet; } } /* Construct the WhereLoop objects */ - WHERETRACE(0xffff,("*** Optimizer Start ***\n")); - /* Display all terms of the WHERE clause */ -#if defined(WHERETRACE_ENABLED) && defined(SQLITE_ENABLE_TREE_EXPLAIN) - if( sqlite3WhereTrace & 0x100 ){ - int i; - Vdbe *v = pParse->pVdbe; - sqlite3ExplainBegin(v); - for(i=0; inTerm; i++){ - sqlite3ExplainPrintf(v, "#%-2d ", i); - sqlite3ExplainPush(v); - whereExplainTerm(v, &sWLB.pWC->a[i]); - sqlite3ExplainPop(v); - sqlite3ExplainNL(v); +#if defined(WHERETRACE_ENABLED) + if( sqlite3WhereTrace & 0xffff ){ + sqlite3DebugPrintf("*** Optimizer Start *** (wctrlFlags: 0x%x",wctrlFlags); + if( wctrlFlags & WHERE_USE_LIMIT ){ + sqlite3DebugPrintf(", limit: %d", iAuxArg); } - sqlite3ExplainFinish(v); - sqlite3DebugPrintf("%s", sqlite3VdbeExplanation(v)); + sqlite3DebugPrintf(")\n"); + } + if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */ + sqlite3WhereClausePrint(sWLB.pWC); } #endif + if( nTabList!=1 || whereShortCut(&sWLB)==0 ){ rc = whereLoopAddAll(&sWLB); if( rc ) goto whereBeginError; - /* Display all of the WhereLoop objects if wheretrace is enabled */ -#ifdef WHERETRACE_ENABLED /* !=0 */ - if( sqlite3WhereTrace ){ +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace ){ /* Display all of the WhereLoop objects */ WhereLoop *p; int i; - static char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz" - "ABCDEFGHIJKLMNOPQRSTUVWYXZ"; + static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz" + "ABCDEFGHIJKLMNOPQRSTUVWYXZ"; for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){ p->cId = zLabel[i%sizeof(zLabel)]; whereLoopPrint(p, sWLB.pWC); @@ -114440,17 +133922,16 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( } } if( pWInfo->pOrderBy==0 && (db->flags & SQLITE_ReverseOrder)!=0 ){ - pWInfo->revMask = (Bitmask)(-1); + pWInfo->revMask = ALLBITS; } if( pParse->nErr || NEVER(db->mallocFailed) ){ goto whereBeginError; } -#ifdef WHERETRACE_ENABLED /* !=0 */ +#ifdef WHERETRACE_ENABLED if( sqlite3WhereTrace ){ - int ii; sqlite3DebugPrintf("---- Solution nRow=%d", pWInfo->nRowOut); - if( pWInfo->bOBSat ){ - sqlite3DebugPrintf(" ORDERBY=0x%llx", pWInfo->revMask); + if( pWInfo->nOBSat>0 ){ + sqlite3DebugPrintf(" ORDERBY=%d,0x%llx", pWInfo->nOBSat, pWInfo->revMask); } switch( pWInfo->eDistinct ){ case WHERE_DISTINCT_UNIQUE: { @@ -114474,15 +133955,17 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( #endif /* Attempt to omit tables from the join that do not effect the result */ if( pWInfo->nLevel>=2 - && pResultSet!=0 + && pDistinctSet!=0 && OptimizationEnabled(db, SQLITE_OmitNoopJoin) ){ - Bitmask tabUsed = exprListTableUsage(pMaskSet, pResultSet); - if( sWLB.pOrderBy ) tabUsed |= exprListTableUsage(pMaskSet, sWLB.pOrderBy); + Bitmask tabUsed = sqlite3WhereExprListUsage(pMaskSet, pDistinctSet); + if( sWLB.pOrderBy ){ + tabUsed |= sqlite3WhereExprListUsage(pMaskSet, sWLB.pOrderBy); + } while( pWInfo->nLevel>=2 ){ WhereTerm *pTerm, *pEnd; pLoop = pWInfo->a[pWInfo->nLevel-1].pWLoop; - if( (pWInfo->pTabList->a[pLoop->iTab].jointype & JT_LEFT)==0 ) break; + if( (pWInfo->pTabList->a[pLoop->iTab].fg.jointype & JT_LEFT)==0 ) break; if( (wctrlFlags & WHERE_WANT_DISTINCT)==0 && (pLoop->wsFlags & WHERE_ONEROW)==0 ){ @@ -114508,22 +133991,28 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( /* If the caller is an UPDATE or DELETE statement that is requesting ** to use a one-pass algorithm, determine if this is appropriate. - ** The one-pass algorithm only works if the WHERE clause constrains - ** the statement to update a single row. */ assert( (wctrlFlags & WHERE_ONEPASS_DESIRED)==0 || pWInfo->nLevel==1 ); - if( (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 - && (pWInfo->a[0].pWLoop->wsFlags & WHERE_ONEROW)!=0 ){ - pWInfo->okOnePass = 1; - if( HasRowid(pTabList->a[0].pTab) ){ - pWInfo->a[0].pWLoop->wsFlags &= ~WHERE_IDX_ONLY; + if( (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 ){ + int wsFlags = pWInfo->a[0].pWLoop->wsFlags; + int bOnerow = (wsFlags & WHERE_ONEROW)!=0; + if( bOnerow + || ((wctrlFlags & WHERE_ONEPASS_MULTIROW)!=0 + && 0==(wsFlags & WHERE_VIRTUALTABLE)) + ){ + pWInfo->eOnePass = bOnerow ? ONEPASS_SINGLE : ONEPASS_MULTI; + if( HasRowid(pTabList->a[0].pTab) && (wsFlags & WHERE_IDX_ONLY) ){ + if( wctrlFlags & WHERE_ONEPASS_MULTIROW ){ + bFordelete = OPFLAG_FORDELETE; + } + pWInfo->a[0].pWLoop->wsFlags = (wsFlags & ~WHERE_IDX_ONLY); + } } } /* Open all tables in the pTabList and any indices selected for ** searching those tables. */ - notReady = ~(Bitmask)0; for(ii=0, pLevel=pWInfo->a; iiwsFlags & WHERE_IDX_ONLY)==0 - && (wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 ){ + && (wctrlFlags & WHERE_OR_SUBCLAUSE)==0 ){ int op = OP_OpenRead; - if( pWInfo->okOnePass ){ + if( pWInfo->eOnePass!=ONEPASS_OFF ){ op = OP_OpenWrite; pWInfo->aiCurOnePass[0] = pTabItem->iCursor; }; sqlite3OpenTable(pParse, pTabItem->iCursor, iDb, pTab, op); assert( pTabItem->iCursor==pLevel->iTabCur ); - testcase( !pWInfo->okOnePass && pTab->nCol==BMS-1 ); - testcase( !pWInfo->okOnePass && pTab->nCol==BMS ); - if( !pWInfo->okOnePass && pTab->nColeOnePass==ONEPASS_OFF && pTab->nCol==BMS-1 ); + testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS ); + if( pWInfo->eOnePass==ONEPASS_OFF && pTab->nColcolUsed; int n = 0; for(; b; b=b>>1, n++){} - sqlite3VdbeChangeP4(v, sqlite3VdbeCurrentAddr(v)-1, - SQLITE_INT_TO_PTR(n), P4_INT32); + sqlite3VdbeChangeP4(v, -1, SQLITE_INT_TO_PTR(n), P4_INT32); assert( n<=pTab->nCol ); } +#ifdef SQLITE_ENABLE_CURSOR_HINTS + if( pLoop->u.btree.pIndex!=0 ){ + sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ|bFordelete); + }else +#endif + { + sqlite3VdbeChangeP5(v, bFordelete); + } +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK + sqlite3VdbeAddOp4Dup8(v, OP_ColumnsUsed, pTabItem->iCursor, 0, 0, + (const u8*)&pTabItem->colUsed, P4_INT64); +#endif }else{ sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); } @@ -114571,11 +134071,18 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( Index *pIx = pLoop->u.btree.pIndex; int iIndexCur; int op = OP_OpenRead; - /* iIdxCur is always set if to a positive value if ONEPASS is possible */ - assert( iIdxCur!=0 || (pWInfo->wctrlFlags & WHERE_ONEPASS_DESIRED)==0 ); - if( pWInfo->okOnePass ){ + /* iAuxArg is always set if to a positive value if ONEPASS is possible */ + assert( iAuxArg!=0 || (pWInfo->wctrlFlags & WHERE_ONEPASS_DESIRED)==0 ); + if( !HasRowid(pTab) && IsPrimaryKeyIndex(pIx) + && (wctrlFlags & WHERE_OR_SUBCLAUSE)!=0 + ){ + /* This is one term of an OR-optimization using the PRIMARY KEY of a + ** WITHOUT ROWID table. No need for a separate index */ + iIndexCur = pLevel->iTabCur; + op = 0; + }else if( pWInfo->eOnePass!=ONEPASS_OFF ){ Index *pJ = pTabItem->pTab->pIndex; - iIndexCur = iIdxCur; + iIndexCur = iAuxArg; assert( wctrlFlags & WHERE_ONEPASS_DESIRED ); while( ALWAYS(pJ) && pJ!=pIx ){ iIndexCur++; @@ -114583,20 +134090,43 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( } op = OP_OpenWrite; pWInfo->aiCurOnePass[1] = iIndexCur; - }else if( iIdxCur && (wctrlFlags & WHERE_ONETABLE_ONLY)!=0 ){ - iIndexCur = iIdxCur; + }else if( iAuxArg && (wctrlFlags & WHERE_OR_SUBCLAUSE)!=0 ){ + iIndexCur = iAuxArg; + op = OP_ReopenIdx; }else{ iIndexCur = pParse->nTab++; } pLevel->iIdxCur = iIndexCur; assert( pIx->pSchema==pTab->pSchema ); assert( iIndexCur>=0 ); - sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb); - sqlite3VdbeSetP4KeyInfo(pParse, pIx); - VdbeComment((v, "%s", pIx->zName)); + if( op ){ + sqlite3VdbeAddOp3(v, op, iIndexCur, pIx->tnum, iDb); + sqlite3VdbeSetP4KeyInfo(pParse, pIx); + if( (pLoop->wsFlags & WHERE_CONSTRAINT)!=0 + && (pLoop->wsFlags & (WHERE_COLUMN_RANGE|WHERE_SKIPSCAN))==0 + && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0 + ){ + sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */ + } + VdbeComment((v, "%s", pIx->zName)); +#ifdef SQLITE_ENABLE_COLUMN_USED_MASK + { + u64 colUsed = 0; + int ii, jj; + for(ii=0; iinColumn; ii++){ + jj = pIx->aiColumn[ii]; + if( jj<0 ) continue; + if( jj>63 ) jj = 63; + if( (pTabItem->colUsed & MASKBIT(jj))==0 ) continue; + colUsed |= ((u64)1)<<(ii<63 ? ii : 63); + } + sqlite3VdbeAddOp4Dup8(v, OP_ColumnsUsed, iIndexCur, 0, 0, + (u8*)&colUsed, P4_INT64); + } +#endif /* SQLITE_ENABLE_COLUMN_USED_MASK */ + } } - sqlite3CodeVerifySchema(pParse, iDb); - notReady &= ~getMask(&pWInfo->sMaskSet, pTabItem->iCursor); + if( iDb>=0 ) sqlite3CodeVerifySchema(pParse, iDb); } pWInfo->iTop = sqlite3VdbeCurrentAddr(v); if( db->mallocFailed ) goto whereBeginError; @@ -114607,7 +134137,10 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( */ notReady = ~(Bitmask)0; for(ii=0; iia[ii]; + wsFlags = pLevel->pWLoop->wsFlags; #ifndef SQLITE_OMIT_AUTOMATIC_INDEX if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){ constructAutomaticIndex(pParse, &pWInfo->sWC, @@ -114615,10 +134148,15 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin( if( db->mallocFailed ) goto whereBeginError; } #endif - explainOneScan(pParse, pTabList, pLevel, ii, pLevel->iFrom, wctrlFlags); + addrExplain = sqlite3WhereExplainOneScan( + pParse, pTabList, pLevel, ii, pLevel->iFrom, wctrlFlags + ); pLevel->addrBody = sqlite3VdbeCurrentAddr(v); - notReady = codeOneLoopStart(pWInfo, ii, notReady); + notReady = sqlite3WhereCodeOneLoopStart(pWInfo, ii, notReady); pWInfo->iContinue = pLevel->addrCont; + if( (wsFlags&WHERE_MULTI_OR)==0 && (wctrlFlags&WHERE_OR_SUBCLAUSE)==0 ){ + sqlite3WhereAddScanStatus(v, pTabList, pLevel, addrExplain); + } } /* Done. */ @@ -114657,8 +134195,12 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ pLoop = pLevel->pWLoop; sqlite3VdbeResolveLabel(v, pLevel->addrCont); if( pLevel->op!=OP_Noop ){ - sqlite3VdbeAddOp2(v, pLevel->op, pLevel->p1, pLevel->p2); + sqlite3VdbeAddOp3(v, pLevel->op, pLevel->p1, pLevel->p2, pLevel->p3); sqlite3VdbeChangeP5(v, pLevel->p5); + VdbeCoverage(v); + VdbeCoverageIf(v, pLevel->op==OP_Next); + VdbeCoverageIf(v, pLevel->op==OP_Prev); + VdbeCoverageIf(v, pLevel->op==OP_VNext); } if( pLoop->wsFlags & WHERE_IN_ABLE && pLevel->u.in.nIn>0 ){ struct InLoop *pIn; @@ -114666,32 +134208,45 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ sqlite3VdbeResolveLabel(v, pLevel->addrNxt); for(j=pLevel->u.in.nIn, pIn=&pLevel->u.in.aInLoop[j-1]; j>0; j--, pIn--){ sqlite3VdbeJumpHere(v, pIn->addrInTop+1); - sqlite3VdbeAddOp2(v, pIn->eEndLoopOp, pIn->iCur, pIn->addrInTop); + if( pIn->eEndLoopOp!=OP_Noop ){ + sqlite3VdbeAddOp2(v, pIn->eEndLoopOp, pIn->iCur, pIn->addrInTop); + VdbeCoverage(v); + VdbeCoverageIf(v, pIn->eEndLoopOp==OP_PrevIfOpen); + VdbeCoverageIf(v, pIn->eEndLoopOp==OP_NextIfOpen); + } sqlite3VdbeJumpHere(v, pIn->addrInTop-1); } - sqlite3DbFree(db, pLevel->u.in.aInLoop); } sqlite3VdbeResolveLabel(v, pLevel->addrBrk); if( pLevel->addrSkip ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrSkip); + sqlite3VdbeGoto(v, pLevel->addrSkip); VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName)); sqlite3VdbeJumpHere(v, pLevel->addrSkip); sqlite3VdbeJumpHere(v, pLevel->addrSkip-2); } +#ifndef SQLITE_LIKE_DOESNT_MATCH_BLOBS + if( pLevel->addrLikeRep ){ + sqlite3VdbeAddOp2(v, OP_DecrJumpZero, (int)(pLevel->iLikeRepCntr>>1), + pLevel->addrLikeRep); + VdbeCoverage(v); + } +#endif if( pLevel->iLeftJoin ){ - addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); - assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 - || (pLoop->wsFlags & WHERE_INDEXED)!=0 ); - if( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 ){ + int ws = pLoop->wsFlags; + addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v); + assert( (ws & WHERE_IDX_ONLY)==0 || (ws & WHERE_INDEXED)!=0 ); + if( (ws & WHERE_IDX_ONLY)==0 ){ sqlite3VdbeAddOp1(v, OP_NullRow, pTabList->a[i].iCursor); } - if( pLoop->wsFlags & WHERE_INDEXED ){ + if( (ws & WHERE_INDEXED) + || ((ws & WHERE_MULTI_OR) && pLevel->u.pCovidx) + ){ sqlite3VdbeAddOp1(v, OP_NullRow, pLevel->iIdxCur); } if( pLevel->op==OP_Return ){ sqlite3VdbeAddOp2(v, OP_Gosub, pLevel->p1, pLevel->addrFirst); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrFirst); + sqlite3VdbeGoto(v, pLevel->addrFirst); } sqlite3VdbeJumpHere(v, addr); } @@ -114706,31 +134261,22 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ assert( pWInfo->nLevel<=pTabList->nSrc ); for(i=0, pLevel=pWInfo->a; inLevel; i++, pLevel++){ + int k, last; + VdbeOp *pOp; Index *pIdx = 0; struct SrcList_item *pTabItem = &pTabList->a[pLevel->iFrom]; Table *pTab = pTabItem->pTab; assert( pTab!=0 ); pLoop = pLevel->pWLoop; - /* Close all of the cursors that were opened by sqlite3WhereBegin. - ** Except, do not close cursors that will be reused by the OR optimization - ** (WHERE_OMIT_OPEN_CLOSE). And do not close the OP_OpenWrite cursors - ** created for the ONEPASS optimization. + /* For a co-routine, change all OP_Column references to the table of + ** the co-routine into OP_Copy of result contained in a register. + ** OP_Rowid becomes OP_Null. */ - if( (pTab->tabFlags & TF_Ephemeral)==0 - && pTab->pSelect==0 - && (pWInfo->wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 - ){ - int ws = pLoop->wsFlags; - if( !pWInfo->okOnePass && (ws & WHERE_IDX_ONLY)==0 ){ - sqlite3VdbeAddOp1(v, OP_Close, pTabItem->iCursor); - } - if( (ws & WHERE_INDEXED)!=0 - && (ws & (WHERE_IPK|WHERE_AUTO_INDEX))==0 - && pLevel->iIdxCur!=pWInfo->aiCurOnePass[1] - ){ - sqlite3VdbeAddOp1(v, OP_Close, pLevel->iIdxCur); - } + if( pTabItem->fg.viaCoroutine && !db->mallocFailed ){ + translateColumnToCopy(v, pLevel->addrBody, pLevel->iTabCur, + pTabItem->regResult, 0); + continue; } /* If this scan uses an index, make VDBE code substitutions to read data @@ -114749,10 +134295,10 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ }else if( pLoop->wsFlags & WHERE_MULTI_OR ){ pIdx = pLevel->u.pCovidx; } - if( pIdx && !db->mallocFailed ){ - int k, last; - VdbeOp *pOp; - + if( pIdx + && (pWInfo->eOnePass==ONEPASS_OFF || !HasRowid(pIdx->pTable)) + && !db->mallocFailed + ){ last = sqlite3VdbeCurrentAddr(v); k = pLevel->addrBody; pOp = sqlite3VdbeGetOp(v, k); @@ -114764,13 +134310,15 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ if( !HasRowid(pTab) ){ Index *pPk = sqlite3PrimaryKeyIndex(pTab); x = pPk->aiColumn[x]; + assert( x>=0 ); } x = sqlite3ColumnOfIndex(pIdx, x); if( x>=0 ){ pOp->p2 = x; pOp->p1 = pLevel->iIdxCur; } - assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 || x>=0 ); + assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 || x>=0 + || pWInfo->eOnePass ); }else if( pOp->opcode==OP_Rowid ){ pOp->p1 = pLevel->iIdxCur; pOp->opcode = OP_IdxRowid; @@ -114788,19 +134336,34 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ /************** End of where.c ***********************************************/ /************** Begin file parse.c *******************************************/ -/* Driver template for the LEMON parser generator. -** The author disclaims copyright to this source code. +/* +** 2000-05-29 ** -** This version of "lempar.c" is modified, slightly, for use by SQLite. -** The only modifications are the addition of a couple of NEVER() -** macros to disable tests that are needed in the case of a general -** LALR(1) grammar but which are always false in the -** specific grammar used by SQLite. +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** Driver template for the LEMON parser generator. +** +** The "lemon" program processes an LALR(1) input grammar file, then uses +** this template to construct a parser. The "lemon" program inserts text +** at each "%%" line. Also, any "P-a-r-s-e" identifer prefix (without the +** interstitial "-" characters) contained in this template is changed into +** the value of the %name directive from the grammar. Otherwise, the content +** of this template is copied straight through into the generate parser +** source file. +** +** The following is the concatenation of all %include directives from the +** input grammar file: */ -/* First off, code is included that follows the "include" declaration -** in the input grammar file. */ /* #include */ +/************ Begin %include sections from the grammar ************************/ +/* #include "sqliteInt.h" */ /* ** Disable all error recovery processing in the parser push-down @@ -114813,6 +134376,31 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ */ #define yytestcase(X) testcase(X) +/* +** Indicate that sqlite3ParserFree() will never be called with a null +** pointer. +*/ +#define YYPARSEFREENEVERNULL 1 + +/* +** In the amalgamation, the parse.c file generated by lemon and the +** tokenize.c file are concatenated. In that case, sqlite3RunParser() +** has access to the the size of the yyParser object and so the parser +** engine can be allocated from stack. In that case, only the +** sqlite3ParserInit() and sqlite3ParserFinalize() routines are invoked +** and the sqlite3ParserAlloc() and sqlite3ParserFree() routines can be +** omitted. +*/ +#ifdef SQLITE_AMALGAMATION +# define sqlite3Parser_ENGINEALWAYSONSTACK 1 +#endif + +/* +** Alternative datatype for the argument to the malloc() routine passed +** into sqlite3ParserAlloc(). The default is size_t. +*/ +#define YYMALLOCARGTYPE u64 + /* ** An instance of this structure holds information about the ** LIMIT clause of a SELECT statement. @@ -114822,15 +134410,6 @@ struct LimitVal { Expr *pOffset; /* The OFFSET expression. NULL if there is none */ }; -/* -** An instance of this structure is used to store the LIKE, -** GLOB, NOT LIKE, and NOT GLOB operators. -*/ -struct LikeOp { - Token eOperator; /* "like" or "glob" or "regexp" */ - int bNot; /* True if the NOT keyword is present */ -}; - /* ** An instance of the following structure describes the event of a ** TRIGGER. "a" is the event type, one of TK_UPDATE, TK_INSERT, @@ -114843,11 +134422,37 @@ struct LikeOp { struct TrigEvent { int a; IdList * b; }; /* -** An instance of this structure holds the ATTACH key and the key type. +** Disable lookaside memory allocation for objects that might be +** shared across database connections. */ -struct AttachKey { int type; Token key; }; +static void disableLookaside(Parse *pParse){ + pParse->disableLookaside++; + pParse->db->lookaside.bDisable++; +} + /* + ** For a compound SELECT statement, make sure p->pPrior->pNext==p for + ** all elements in the list. And make sure list length does not exceed + ** SQLITE_LIMIT_COMPOUND_SELECT. + */ + static void parserDoubleLinkSelect(Parse *pParse, Select *p){ + if( p->pPrior ){ + Select *pNext = 0, *pLoop; + int mxSelect, cnt = 0; + for(pLoop=p; pLoop; pNext=pLoop, pLoop=pLoop->pPrior, cnt++){ + pLoop->pNext = pNext; + pLoop->selFlags |= SF_Compound; + } + if( (p->selFlags & SF_MultiValue)==0 && + (mxSelect = pParse->db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT])>0 && + cnt>mxSelect + ){ + sqlite3ErrorMsg(pParse, "too many terms in compound SELECT"); + } + } + } + /* This is a utility routine used to set the ExprSpan.zStart and ** ExprSpan.zEnd values of pOut so that the span covers the complete ** range of text beginning with pStart and going to the end of pEnd. @@ -114861,46 +134466,68 @@ struct AttachKey { int type; Token key; }; ** new Expr to populate pOut. Set the span of pOut to be the identifier ** that created the expression. */ - static void spanExpr(ExprSpan *pOut, Parse *pParse, int op, Token *pValue){ - pOut->pExpr = sqlite3PExpr(pParse, op, 0, 0, pValue); - pOut->zStart = pValue->z; - pOut->zEnd = &pValue->z[pValue->n]; + static void spanExpr(ExprSpan *pOut, Parse *pParse, int op, Token t){ + Expr *p = sqlite3DbMallocRawNN(pParse->db, sizeof(Expr)+t.n+1); + if( p ){ + memset(p, 0, sizeof(Expr)); + p->op = (u8)op; + p->flags = EP_Leaf; + p->iAgg = -1; + p->u.zToken = (char*)&p[1]; + memcpy(p->u.zToken, t.z, t.n); + p->u.zToken[t.n] = 0; + if( sqlite3Isquote(p->u.zToken[0]) ){ + if( p->u.zToken[0]=='"' ) p->flags |= EP_DblQuoted; + sqlite3Dequote(p->u.zToken); + } +#if SQLITE_MAX_EXPR_DEPTH>0 + p->nHeight = 1; +#endif + } + pOut->pExpr = p; + pOut->zStart = t.z; + pOut->zEnd = &t.z[t.n]; } /* This routine constructs a binary expression node out of two ExprSpan ** objects and uses the result to populate a new ExprSpan object. */ static void spanBinaryExpr( - ExprSpan *pOut, /* Write the result here */ Parse *pParse, /* The parsing context. Errors accumulate here */ int op, /* The binary operation */ - ExprSpan *pLeft, /* The left operand */ + ExprSpan *pLeft, /* The left operand, and output */ ExprSpan *pRight /* The right operand */ ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pLeft->pExpr, pRight->pExpr, 0); - pOut->zStart = pLeft->zStart; - pOut->zEnd = pRight->zEnd; + pLeft->pExpr = sqlite3PExpr(pParse, op, pLeft->pExpr, pRight->pExpr); + pLeft->zEnd = pRight->zEnd; + } + + /* If doNot is true, then add a TK_NOT Expr-node wrapper around the + ** outside of *ppExpr. + */ + static void exprNot(Parse *pParse, int doNot, ExprSpan *pSpan){ + if( doNot ){ + pSpan->pExpr = sqlite3PExpr(pParse, TK_NOT, pSpan->pExpr, 0); + } } /* Construct an expression node for a unary postfix operator */ static void spanUnaryPostfix( - ExprSpan *pOut, /* Write the new expression node here */ Parse *pParse, /* Parsing context to record errors */ int op, /* The operator */ - ExprSpan *pOperand, /* The operand */ + ExprSpan *pOperand, /* The operand, and output */ Token *pPostOp /* The operand token for setting the span */ ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0, 0); - pOut->zStart = pOperand->zStart; - pOut->zEnd = &pPostOp->z[pPostOp->n]; + pOperand->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0); + pOperand->zEnd = &pPostOp->z[pPostOp->n]; } /* A routine to convert a binary TK_IS or TK_ISNOT expression into a ** unary TK_ISNULL or TK_NOTNULL expression. */ static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){ sqlite3 *db = pParse->db; - if( db->mallocFailed==0 && pY->op==TK_NULL ){ + if( pA && pY && pY->op==TK_NULL ){ pA->op = (u8)op; sqlite3ExprDelete(db, pA->pRight); pA->pRight = 0; @@ -114916,82 +134543,111 @@ struct AttachKey { int type; Token key; }; ExprSpan *pOperand, /* The operand */ Token *pPreOp /* The operand token for setting the span */ ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0, 0); pOut->zStart = pPreOp->z; + pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0); pOut->zEnd = pOperand->zEnd; } -/* Next is all token values, in a form suitable for use by makeheaders. -** This section will be null unless lemon is run with the -m switch. -*/ -/* -** These constants (all generated automatically by the parser generator) -** specify the various kinds of tokens (terminals) that the parser -** understands. -** -** Each symbol here is a terminal symbol in the grammar. -*/ -/* Make sure the INTERFACE macro is defined. -*/ -#ifndef INTERFACE -# define INTERFACE 1 -#endif -/* The next thing included is series of defines which control + + /* Add a single new term to an ExprList that is used to store a + ** list of identifiers. Report an error if the ID list contains + ** a COLLATE clause or an ASC or DESC keyword, except ignore the + ** error while parsing a legacy schema. + */ + static ExprList *parserAddExprIdListTerm( + Parse *pParse, + ExprList *pPrior, + Token *pIdToken, + int hasCollate, + int sortOrder + ){ + ExprList *p = sqlite3ExprListAppend(pParse, pPrior, 0); + if( (hasCollate || sortOrder!=SQLITE_SO_UNDEFINED) + && pParse->db->init.busy==0 + ){ + sqlite3ErrorMsg(pParse, "syntax error after column name \"%.*s\"", + pIdToken->n, pIdToken->z); + } + sqlite3ExprListSetName(pParse, p, pIdToken, 1); + return p; + } +/**************** End of %include directives **********************************/ +/* These constants specify the various numeric values for terminal symbols +** in a format understandable to "makeheaders". This section is blank unless +** "lemon" is run with the "-m" command-line option. +***************** Begin makeheaders token definitions *************************/ +/**************** End makeheaders token definitions ***************************/ + +/* The next sections is a series of control #defines. ** various aspects of the generated parser. -** YYCODETYPE is the data type used for storing terminal -** and nonterminal numbers. "unsigned char" is -** used if there are fewer than 250 terminals -** and nonterminals. "int" is used otherwise. -** YYNOCODE is a number of type YYCODETYPE which corresponds -** to no legal terminal or nonterminal number. This -** number is used to fill in empty slots of the hash -** table. +** YYCODETYPE is the data type used to store the integer codes +** that represent terminal and non-terminal symbols. +** "unsigned char" is used if there are fewer than +** 256 symbols. Larger types otherwise. +** YYNOCODE is a number of type YYCODETYPE that is not used for +** any terminal or nonterminal symbol. ** YYFALLBACK If defined, this indicates that one or more tokens -** have fall-back values which should be used if the -** original value of the token will not parse. -** YYACTIONTYPE is the data type used for storing terminal -** and nonterminal numbers. "unsigned char" is -** used if there are fewer than 250 rules and -** states combined. "int" is used otherwise. -** sqlite3ParserTOKENTYPE is the data type used for minor tokens given -** directly to the parser from the tokenizer. -** YYMINORTYPE is the data type used for all minor tokens. +** (also known as: "terminal symbols") have fall-back +** values which should be used if the original symbol +** would not parse. This permits keywords to sometimes +** be used as identifiers, for example. +** YYACTIONTYPE is the data type used for "action codes" - numbers +** that indicate what to do in response to the next +** token. +** sqlite3ParserTOKENTYPE is the data type used for minor type for terminal +** symbols. Background: A "minor type" is a semantic +** value associated with a terminal or non-terminal +** symbols. For example, for an "ID" terminal symbol, +** the minor type might be the name of the identifier. +** Each non-terminal can have a different minor type. +** Terminal symbols all have the same minor type, though. +** This macros defines the minor type for terminal +** symbols. +** YYMINORTYPE is the data type used for all minor types. ** This is typically a union of many types, one of ** which is sqlite3ParserTOKENTYPE. The entry in the union -** for base tokens is called "yy0". +** for terminal symbols is called "yy0". ** YYSTACKDEPTH is the maximum depth of the parser's stack. If ** zero the stack is dynamically sized using realloc() ** sqlite3ParserARG_SDECL A static variable declaration for the %extra_argument ** sqlite3ParserARG_PDECL A parameter declaration for the %extra_argument ** sqlite3ParserARG_STORE Code to store %extra_argument into yypParser ** sqlite3ParserARG_FETCH Code to extract %extra_argument from yypParser -** YYNSTATE the combined number of states. -** YYNRULE the number of rules in the grammar ** YYERRORSYMBOL is the code number of the error symbol. If not ** defined, then do no error processing. +** YYNSTATE the combined number of states. +** YYNRULE the number of rules in the grammar +** YY_MAX_SHIFT Maximum value for shift actions +** YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions +** YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions +** YY_MIN_REDUCE Maximum value for reduce actions +** YY_ERROR_ACTION The yy_action[] code for syntax error +** YY_ACCEPT_ACTION The yy_action[] code for accept +** YY_NO_ACTION The yy_action[] code for no-op */ +#ifndef INTERFACE +# define INTERFACE 1 +#endif +/************* Begin control #defines *****************************************/ #define YYCODETYPE unsigned char -#define YYNOCODE 254 +#define YYNOCODE 252 #define YYACTIONTYPE unsigned short int -#define YYWILDCARD 70 +#define YYWILDCARD 96 #define sqlite3ParserTOKENTYPE Token typedef union { int yyinit; sqlite3ParserTOKENTYPE yy0; - Select* yy3; - ExprList* yy14; - With* yy59; - SrcList* yy65; - struct LikeOp yy96; - Expr* yy132; - u8 yy186; - int yy328; - ExprSpan yy346; - struct TrigEvent yy378; - u16 yy381; - IdList* yy408; - struct {int value; int mask;} yy429; - TriggerStep* yy473; - struct LimitVal yy476; + Expr* yy72; + TriggerStep* yy145; + ExprList* yy148; + SrcList* yy185; + ExprSpan yy190; + int yy194; + Select* yy243; + IdList* yy254; + With* yy285; + struct TrigEvent yy332; + struct LimitVal yy354; + struct {int value; int mask;} yy497; } YYMINORTYPE; #ifndef YYSTACKDEPTH #define YYSTACKDEPTH 100 @@ -115000,16 +134656,18 @@ typedef union { #define sqlite3ParserARG_PDECL ,Parse *pParse #define sqlite3ParserARG_FETCH Parse *pParse = yypParser->pParse #define sqlite3ParserARG_STORE yypParser->pParse = pParse -#define YYNSTATE 642 -#define YYNRULE 327 #define YYFALLBACK 1 -#define YY_NO_ACTION (YYNSTATE+YYNRULE+2) -#define YY_ACCEPT_ACTION (YYNSTATE+YYNRULE+1) -#define YY_ERROR_ACTION (YYNSTATE+YYNRULE) - -/* The yyzerominor constant is used to initialize instances of -** YYMINORTYPE objects to zero. */ -static const YYMINORTYPE yyzerominor = { 0 }; +#define YYNSTATE 456 +#define YYNRULE 332 +#define YY_MAX_SHIFT 455 +#define YY_MIN_SHIFTREDUCE 668 +#define YY_MAX_SHIFTREDUCE 999 +#define YY_MIN_REDUCE 1000 +#define YY_MAX_REDUCE 1331 +#define YY_ERROR_ACTION 1332 +#define YY_ACCEPT_ACTION 1333 +#define YY_NO_ACTION 1334 +/************* End control #defines *******************************************/ /* Define the yytestcase() macro to be a no-op if is not already defined ** otherwise. @@ -115032,29 +134690,37 @@ static const YYMINORTYPE yyzerominor = { 0 }; ** Suppose the action integer is N. Then the action is determined as ** follows ** -** 0 <= N < YYNSTATE Shift N. That is, push the lookahead +** 0 <= N <= YY_MAX_SHIFT Shift N. That is, push the lookahead ** token onto the stack and goto state N. ** -** YYNSTATE <= N < YYNSTATE+YYNRULE Reduce by rule N-YYNSTATE. +** N between YY_MIN_SHIFTREDUCE Shift to an arbitrary state then +** and YY_MAX_SHIFTREDUCE reduce by rule N-YY_MIN_SHIFTREDUCE. ** -** N == YYNSTATE+YYNRULE A syntax error has occurred. +** N between YY_MIN_REDUCE Reduce by rule N-YY_MIN_REDUCE +** and YY_MAX_REDUCE ** -** N == YYNSTATE+YYNRULE+1 The parser accepts its input. +** N == YY_ERROR_ACTION A syntax error has occurred. ** -** N == YYNSTATE+YYNRULE+2 No such action. Denotes unused +** N == YY_ACCEPT_ACTION The parser accepts its input. +** +** N == YY_NO_ACTION No such action. Denotes unused ** slots in the yy_action[] table. ** ** The action table is constructed as a single large table named yy_action[]. -** Given state S and lookahead X, the action is computed as +** Given state S and lookahead X, the action is computed as either: ** -** yy_action[ yy_shift_ofst[S] + X ] +** (A) N = yy_action[ yy_shift_ofst[S] + X ] +** (B) N = yy_default[S] ** -** If the index value yy_shift_ofst[S]+X is out of range or if the value -** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X or if yy_shift_ofst[S] -** is equal to YY_SHIFT_USE_DFLT, it means that the action is not in the table -** and that yy_default[S] should be used instead. +** The (A) formula is preferred. The B formula is used instead if: +** (1) The yy_shift_ofst[S]+X value is out of range, or +** (2) yy_lookahead[yy_shift_ofst[S]+X] is not equal to X, or +** (3) yy_shift_ofst[S] equal YY_SHIFT_USE_DFLT. +** (Implementation note: YY_SHIFT_USE_DFLT is chosen so that +** YY_SHIFT_USE_DFLT+X will be out of range for all possible lookaheads X. +** Hence only tests (1) and (2) need to be evaluated.) ** -** The formula above is for computing the action when the lookahead is +** The formulas above are for computing the action when the lookahead is ** a terminal symbol. If the lookahead is a non-terminal (as occurs after ** a reduce action) then the yy_reduce_ofst[] array is used in place of ** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of @@ -115070,468 +134736,470 @@ static const YYMINORTYPE yyzerominor = { 0 }; ** yy_reduce_ofst[] For each state, the offset into yy_action for ** shifting non-terminals after a reduce. ** yy_default[] Default action for each state. -*/ -#define YY_ACTTAB_COUNT (1497) +** +*********** Begin parsing tables **********************************************/ +#define YY_ACTTAB_COUNT (1567) static const YYACTIONTYPE yy_action[] = { - /* 0 */ 306, 212, 432, 955, 639, 191, 955, 295, 559, 88, - /* 10 */ 88, 88, 88, 81, 86, 86, 86, 86, 85, 85, - /* 20 */ 84, 84, 84, 83, 330, 185, 184, 183, 635, 635, - /* 30 */ 292, 606, 606, 88, 88, 88, 88, 683, 86, 86, - /* 40 */ 86, 86, 85, 85, 84, 84, 84, 83, 330, 16, - /* 50 */ 436, 597, 89, 90, 80, 600, 599, 601, 601, 87, - /* 60 */ 87, 88, 88, 88, 88, 684, 86, 86, 86, 86, - /* 70 */ 85, 85, 84, 84, 84, 83, 330, 306, 559, 84, - /* 80 */ 84, 84, 83, 330, 65, 86, 86, 86, 86, 85, - /* 90 */ 85, 84, 84, 84, 83, 330, 635, 635, 634, 633, - /* 100 */ 182, 682, 550, 379, 376, 375, 17, 322, 606, 606, - /* 110 */ 371, 198, 479, 91, 374, 82, 79, 165, 85, 85, - /* 120 */ 84, 84, 84, 83, 330, 598, 635, 635, 107, 89, - /* 130 */ 90, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 140 */ 88, 88, 186, 86, 86, 86, 86, 85, 85, 84, - /* 150 */ 84, 84, 83, 330, 306, 594, 594, 142, 328, 327, - /* 160 */ 484, 249, 344, 238, 635, 635, 634, 633, 585, 448, - /* 170 */ 526, 525, 229, 388, 1, 394, 450, 584, 449, 635, - /* 180 */ 635, 635, 635, 319, 395, 606, 606, 199, 157, 273, - /* 190 */ 382, 268, 381, 187, 635, 635, 634, 633, 311, 555, - /* 200 */ 266, 593, 593, 266, 347, 588, 89, 90, 80, 600, - /* 210 */ 599, 601, 601, 87, 87, 88, 88, 88, 88, 478, - /* 220 */ 86, 86, 86, 86, 85, 85, 84, 84, 84, 83, - /* 230 */ 330, 306, 272, 536, 634, 633, 146, 610, 197, 310, - /* 240 */ 575, 182, 482, 271, 379, 376, 375, 506, 21, 634, - /* 250 */ 633, 634, 633, 635, 635, 374, 611, 574, 548, 440, - /* 260 */ 111, 563, 606, 606, 634, 633, 324, 479, 608, 608, - /* 270 */ 608, 300, 435, 573, 119, 407, 210, 162, 562, 883, - /* 280 */ 592, 592, 306, 89, 90, 80, 600, 599, 601, 601, - /* 290 */ 87, 87, 88, 88, 88, 88, 506, 86, 86, 86, - /* 300 */ 86, 85, 85, 84, 84, 84, 83, 330, 620, 111, - /* 310 */ 635, 635, 361, 606, 606, 358, 249, 349, 248, 433, - /* 320 */ 243, 479, 586, 634, 633, 195, 611, 93, 119, 221, - /* 330 */ 575, 497, 534, 534, 89, 90, 80, 600, 599, 601, - /* 340 */ 601, 87, 87, 88, 88, 88, 88, 574, 86, 86, - /* 350 */ 86, 86, 85, 85, 84, 84, 84, 83, 330, 306, - /* 360 */ 77, 429, 638, 573, 589, 530, 240, 230, 242, 105, - /* 370 */ 249, 349, 248, 515, 588, 208, 460, 529, 564, 173, - /* 380 */ 634, 633, 970, 144, 430, 2, 424, 228, 380, 557, - /* 390 */ 606, 606, 190, 153, 159, 158, 514, 51, 632, 631, - /* 400 */ 630, 71, 536, 432, 954, 196, 610, 954, 614, 45, - /* 410 */ 18, 89, 90, 80, 600, 599, 601, 601, 87, 87, - /* 420 */ 88, 88, 88, 88, 261, 86, 86, 86, 86, 85, - /* 430 */ 85, 84, 84, 84, 83, 330, 306, 608, 608, 608, - /* 440 */ 542, 424, 402, 385, 241, 506, 451, 320, 211, 543, - /* 450 */ 164, 436, 386, 293, 451, 587, 108, 496, 111, 334, - /* 460 */ 391, 591, 424, 614, 27, 452, 453, 606, 606, 72, - /* 470 */ 257, 70, 259, 452, 339, 342, 564, 582, 68, 415, - /* 480 */ 469, 328, 327, 62, 614, 45, 110, 393, 89, 90, - /* 490 */ 80, 600, 599, 601, 601, 87, 87, 88, 88, 88, - /* 500 */ 88, 152, 86, 86, 86, 86, 85, 85, 84, 84, - /* 510 */ 84, 83, 330, 306, 110, 499, 520, 538, 402, 389, - /* 520 */ 424, 110, 566, 500, 593, 593, 454, 82, 79, 165, - /* 530 */ 424, 591, 384, 564, 340, 615, 188, 162, 424, 350, - /* 540 */ 616, 424, 614, 44, 606, 606, 445, 582, 300, 434, - /* 550 */ 151, 19, 614, 9, 568, 580, 348, 615, 469, 567, - /* 560 */ 614, 26, 616, 614, 45, 89, 90, 80, 600, 599, - /* 570 */ 601, 601, 87, 87, 88, 88, 88, 88, 411, 86, - /* 580 */ 86, 86, 86, 85, 85, 84, 84, 84, 83, 330, - /* 590 */ 306, 579, 110, 578, 521, 282, 433, 398, 400, 255, - /* 600 */ 486, 82, 79, 165, 487, 164, 82, 79, 165, 488, - /* 610 */ 488, 364, 387, 424, 544, 544, 509, 350, 362, 155, - /* 620 */ 191, 606, 606, 559, 642, 640, 333, 82, 79, 165, - /* 630 */ 305, 564, 507, 312, 357, 614, 45, 329, 596, 595, - /* 640 */ 194, 337, 89, 90, 80, 600, 599, 601, 601, 87, - /* 650 */ 87, 88, 88, 88, 88, 424, 86, 86, 86, 86, - /* 660 */ 85, 85, 84, 84, 84, 83, 330, 306, 20, 323, - /* 670 */ 150, 263, 211, 543, 421, 596, 595, 614, 22, 424, - /* 680 */ 193, 424, 284, 424, 391, 424, 509, 424, 577, 424, - /* 690 */ 186, 335, 424, 559, 424, 313, 120, 546, 606, 606, - /* 700 */ 67, 614, 47, 614, 50, 614, 48, 614, 100, 614, - /* 710 */ 99, 614, 101, 576, 614, 102, 614, 109, 326, 89, - /* 720 */ 90, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 730 */ 88, 88, 424, 86, 86, 86, 86, 85, 85, 84, - /* 740 */ 84, 84, 83, 330, 306, 424, 311, 424, 585, 54, - /* 750 */ 424, 516, 517, 590, 614, 112, 424, 584, 424, 572, - /* 760 */ 424, 195, 424, 571, 424, 67, 424, 614, 94, 614, - /* 770 */ 98, 424, 614, 97, 264, 606, 606, 195, 614, 46, - /* 780 */ 614, 96, 614, 30, 614, 49, 614, 115, 614, 114, - /* 790 */ 418, 229, 388, 614, 113, 306, 89, 90, 80, 600, - /* 800 */ 599, 601, 601, 87, 87, 88, 88, 88, 88, 424, - /* 810 */ 86, 86, 86, 86, 85, 85, 84, 84, 84, 83, - /* 820 */ 330, 119, 424, 590, 110, 372, 606, 606, 195, 53, - /* 830 */ 250, 614, 29, 195, 472, 438, 729, 190, 302, 498, - /* 840 */ 14, 523, 641, 2, 614, 43, 306, 89, 90, 80, - /* 850 */ 600, 599, 601, 601, 87, 87, 88, 88, 88, 88, - /* 860 */ 424, 86, 86, 86, 86, 85, 85, 84, 84, 84, - /* 870 */ 83, 330, 424, 613, 964, 964, 354, 606, 606, 420, - /* 880 */ 312, 64, 614, 42, 391, 355, 283, 437, 301, 255, - /* 890 */ 414, 410, 495, 492, 614, 28, 471, 306, 89, 90, - /* 900 */ 80, 600, 599, 601, 601, 87, 87, 88, 88, 88, - /* 910 */ 88, 424, 86, 86, 86, 86, 85, 85, 84, 84, - /* 920 */ 84, 83, 330, 424, 110, 110, 110, 110, 606, 606, - /* 930 */ 110, 254, 13, 614, 41, 532, 531, 283, 481, 531, - /* 940 */ 457, 284, 119, 561, 356, 614, 40, 284, 306, 89, - /* 950 */ 78, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 960 */ 88, 88, 424, 86, 86, 86, 86, 85, 85, 84, - /* 970 */ 84, 84, 83, 330, 110, 424, 341, 220, 555, 606, - /* 980 */ 606, 351, 555, 318, 614, 95, 413, 255, 83, 330, - /* 990 */ 284, 284, 255, 640, 333, 356, 255, 614, 39, 306, - /* 1000 */ 356, 90, 80, 600, 599, 601, 601, 87, 87, 88, - /* 1010 */ 88, 88, 88, 424, 86, 86, 86, 86, 85, 85, - /* 1020 */ 84, 84, 84, 83, 330, 424, 317, 316, 141, 465, - /* 1030 */ 606, 606, 219, 619, 463, 614, 10, 417, 462, 255, - /* 1040 */ 189, 510, 553, 351, 207, 363, 161, 614, 38, 315, - /* 1050 */ 218, 255, 255, 80, 600, 599, 601, 601, 87, 87, - /* 1060 */ 88, 88, 88, 88, 424, 86, 86, 86, 86, 85, - /* 1070 */ 85, 84, 84, 84, 83, 330, 76, 419, 255, 3, - /* 1080 */ 878, 461, 424, 247, 331, 331, 614, 37, 217, 76, - /* 1090 */ 419, 390, 3, 216, 215, 422, 4, 331, 331, 424, - /* 1100 */ 547, 12, 424, 545, 614, 36, 424, 541, 422, 424, - /* 1110 */ 540, 424, 214, 424, 408, 424, 539, 403, 605, 605, - /* 1120 */ 237, 614, 25, 119, 614, 24, 588, 408, 614, 45, - /* 1130 */ 118, 614, 35, 614, 34, 614, 33, 614, 23, 588, - /* 1140 */ 60, 223, 603, 602, 513, 378, 73, 74, 140, 139, - /* 1150 */ 424, 110, 265, 75, 426, 425, 59, 424, 610, 73, - /* 1160 */ 74, 549, 402, 404, 424, 373, 75, 426, 425, 604, - /* 1170 */ 138, 610, 614, 11, 392, 76, 419, 181, 3, 614, - /* 1180 */ 32, 271, 369, 331, 331, 493, 614, 31, 149, 608, - /* 1190 */ 608, 608, 607, 15, 422, 365, 614, 8, 137, 489, - /* 1200 */ 136, 190, 608, 608, 608, 607, 15, 485, 176, 135, - /* 1210 */ 7, 252, 477, 408, 174, 133, 175, 474, 57, 56, - /* 1220 */ 132, 130, 119, 76, 419, 588, 3, 468, 245, 464, - /* 1230 */ 171, 331, 331, 125, 123, 456, 447, 122, 446, 104, - /* 1240 */ 336, 231, 422, 166, 154, 73, 74, 332, 116, 431, - /* 1250 */ 121, 309, 75, 426, 425, 222, 106, 610, 308, 637, - /* 1260 */ 204, 408, 629, 627, 628, 6, 200, 428, 427, 290, - /* 1270 */ 203, 622, 201, 588, 62, 63, 289, 66, 419, 399, - /* 1280 */ 3, 401, 288, 92, 143, 331, 331, 287, 608, 608, - /* 1290 */ 608, 607, 15, 73, 74, 227, 422, 325, 69, 416, - /* 1300 */ 75, 426, 425, 612, 412, 610, 192, 61, 569, 209, - /* 1310 */ 396, 226, 278, 225, 383, 408, 527, 558, 276, 533, - /* 1320 */ 552, 528, 321, 523, 370, 508, 180, 588, 494, 179, - /* 1330 */ 366, 117, 253, 269, 522, 503, 608, 608, 608, 607, - /* 1340 */ 15, 551, 502, 58, 274, 524, 178, 73, 74, 304, - /* 1350 */ 501, 368, 303, 206, 75, 426, 425, 491, 360, 610, - /* 1360 */ 213, 177, 483, 131, 345, 298, 297, 296, 202, 294, - /* 1370 */ 480, 490, 466, 134, 172, 129, 444, 346, 470, 128, - /* 1380 */ 314, 459, 103, 127, 126, 148, 124, 167, 443, 235, - /* 1390 */ 608, 608, 608, 607, 15, 442, 439, 623, 234, 299, - /* 1400 */ 145, 583, 291, 377, 581, 160, 119, 156, 270, 636, - /* 1410 */ 971, 169, 279, 626, 520, 625, 473, 624, 170, 621, - /* 1420 */ 618, 119, 168, 55, 409, 423, 537, 609, 286, 285, - /* 1430 */ 405, 570, 560, 556, 5, 52, 458, 554, 147, 267, - /* 1440 */ 519, 504, 518, 406, 262, 239, 260, 512, 343, 511, - /* 1450 */ 258, 353, 565, 256, 224, 251, 359, 277, 275, 476, - /* 1460 */ 475, 246, 352, 244, 467, 455, 236, 233, 232, 307, - /* 1470 */ 441, 281, 205, 163, 397, 280, 535, 505, 330, 617, - /* 1480 */ 971, 971, 971, 971, 367, 971, 971, 971, 971, 971, - /* 1490 */ 971, 971, 971, 971, 971, 971, 338, + /* 0 */ 325, 832, 351, 825, 5, 203, 203, 819, 99, 100, + /* 10 */ 90, 842, 842, 854, 857, 846, 846, 97, 97, 98, + /* 20 */ 98, 98, 98, 301, 96, 96, 96, 96, 95, 95, + /* 30 */ 94, 94, 94, 93, 351, 325, 977, 977, 824, 824, + /* 40 */ 826, 947, 354, 99, 100, 90, 842, 842, 854, 857, + /* 50 */ 846, 846, 97, 97, 98, 98, 98, 98, 338, 96, + /* 60 */ 96, 96, 96, 95, 95, 94, 94, 94, 93, 351, + /* 70 */ 95, 95, 94, 94, 94, 93, 351, 791, 977, 977, + /* 80 */ 325, 94, 94, 94, 93, 351, 792, 75, 99, 100, + /* 90 */ 90, 842, 842, 854, 857, 846, 846, 97, 97, 98, + /* 100 */ 98, 98, 98, 450, 96, 96, 96, 96, 95, 95, + /* 110 */ 94, 94, 94, 93, 351, 1333, 155, 155, 2, 325, + /* 120 */ 275, 146, 132, 52, 52, 93, 351, 99, 100, 90, + /* 130 */ 842, 842, 854, 857, 846, 846, 97, 97, 98, 98, + /* 140 */ 98, 98, 101, 96, 96, 96, 96, 95, 95, 94, + /* 150 */ 94, 94, 93, 351, 958, 958, 325, 268, 428, 413, + /* 160 */ 411, 61, 752, 752, 99, 100, 90, 842, 842, 854, + /* 170 */ 857, 846, 846, 97, 97, 98, 98, 98, 98, 60, + /* 180 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 190 */ 351, 325, 270, 329, 273, 277, 959, 960, 250, 99, + /* 200 */ 100, 90, 842, 842, 854, 857, 846, 846, 97, 97, + /* 210 */ 98, 98, 98, 98, 301, 96, 96, 96, 96, 95, + /* 220 */ 95, 94, 94, 94, 93, 351, 325, 938, 1326, 698, + /* 230 */ 706, 1326, 242, 412, 99, 100, 90, 842, 842, 854, + /* 240 */ 857, 846, 846, 97, 97, 98, 98, 98, 98, 347, + /* 250 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 260 */ 351, 325, 938, 1327, 384, 699, 1327, 381, 379, 99, + /* 270 */ 100, 90, 842, 842, 854, 857, 846, 846, 97, 97, + /* 280 */ 98, 98, 98, 98, 701, 96, 96, 96, 96, 95, + /* 290 */ 95, 94, 94, 94, 93, 351, 325, 92, 89, 178, + /* 300 */ 833, 936, 373, 700, 99, 100, 90, 842, 842, 854, + /* 310 */ 857, 846, 846, 97, 97, 98, 98, 98, 98, 375, + /* 320 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 330 */ 351, 325, 1276, 947, 354, 818, 936, 739, 739, 99, + /* 340 */ 100, 90, 842, 842, 854, 857, 846, 846, 97, 97, + /* 350 */ 98, 98, 98, 98, 230, 96, 96, 96, 96, 95, + /* 360 */ 95, 94, 94, 94, 93, 351, 325, 969, 227, 92, + /* 370 */ 89, 178, 373, 300, 99, 100, 90, 842, 842, 854, + /* 380 */ 857, 846, 846, 97, 97, 98, 98, 98, 98, 921, + /* 390 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 400 */ 351, 325, 449, 447, 447, 447, 147, 737, 737, 99, + /* 410 */ 100, 90, 842, 842, 854, 857, 846, 846, 97, 97, + /* 420 */ 98, 98, 98, 98, 296, 96, 96, 96, 96, 95, + /* 430 */ 95, 94, 94, 94, 93, 351, 325, 419, 231, 958, + /* 440 */ 958, 158, 25, 422, 99, 100, 90, 842, 842, 854, + /* 450 */ 857, 846, 846, 97, 97, 98, 98, 98, 98, 450, + /* 460 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 470 */ 351, 443, 224, 224, 420, 958, 958, 962, 325, 52, + /* 480 */ 52, 959, 960, 176, 415, 78, 99, 100, 90, 842, + /* 490 */ 842, 854, 857, 846, 846, 97, 97, 98, 98, 98, + /* 500 */ 98, 379, 96, 96, 96, 96, 95, 95, 94, 94, + /* 510 */ 94, 93, 351, 325, 428, 418, 298, 959, 960, 962, + /* 520 */ 81, 99, 88, 90, 842, 842, 854, 857, 846, 846, + /* 530 */ 97, 97, 98, 98, 98, 98, 717, 96, 96, 96, + /* 540 */ 96, 95, 95, 94, 94, 94, 93, 351, 325, 843, + /* 550 */ 843, 855, 858, 996, 318, 343, 379, 100, 90, 842, + /* 560 */ 842, 854, 857, 846, 846, 97, 97, 98, 98, 98, + /* 570 */ 98, 450, 96, 96, 96, 96, 95, 95, 94, 94, + /* 580 */ 94, 93, 351, 325, 350, 350, 350, 260, 377, 340, + /* 590 */ 929, 52, 52, 90, 842, 842, 854, 857, 846, 846, + /* 600 */ 97, 97, 98, 98, 98, 98, 361, 96, 96, 96, + /* 610 */ 96, 95, 95, 94, 94, 94, 93, 351, 86, 445, + /* 620 */ 847, 3, 1203, 361, 360, 378, 344, 813, 958, 958, + /* 630 */ 1300, 86, 445, 729, 3, 212, 169, 287, 405, 282, + /* 640 */ 404, 199, 232, 450, 300, 760, 83, 84, 280, 245, + /* 650 */ 262, 365, 251, 85, 352, 352, 92, 89, 178, 83, + /* 660 */ 84, 242, 412, 52, 52, 448, 85, 352, 352, 246, + /* 670 */ 959, 960, 194, 455, 670, 402, 399, 398, 448, 243, + /* 680 */ 221, 114, 434, 776, 361, 450, 397, 268, 747, 224, + /* 690 */ 224, 132, 132, 198, 832, 434, 452, 451, 428, 427, + /* 700 */ 819, 415, 734, 713, 132, 52, 52, 832, 268, 452, + /* 710 */ 451, 734, 194, 819, 363, 402, 399, 398, 450, 1271, + /* 720 */ 1271, 23, 958, 958, 86, 445, 397, 3, 228, 429, + /* 730 */ 895, 824, 824, 826, 827, 19, 203, 720, 52, 52, + /* 740 */ 428, 408, 439, 249, 824, 824, 826, 827, 19, 229, + /* 750 */ 403, 153, 83, 84, 761, 177, 241, 450, 721, 85, + /* 760 */ 352, 352, 120, 157, 959, 960, 58, 977, 409, 355, + /* 770 */ 330, 448, 268, 428, 430, 320, 790, 32, 32, 86, + /* 780 */ 445, 776, 3, 341, 98, 98, 98, 98, 434, 96, + /* 790 */ 96, 96, 96, 95, 95, 94, 94, 94, 93, 351, + /* 800 */ 832, 120, 452, 451, 813, 887, 819, 83, 84, 977, + /* 810 */ 813, 132, 410, 920, 85, 352, 352, 132, 407, 789, + /* 820 */ 958, 958, 92, 89, 178, 917, 448, 262, 370, 261, + /* 830 */ 82, 914, 80, 262, 370, 261, 776, 824, 824, 826, + /* 840 */ 827, 19, 934, 434, 96, 96, 96, 96, 95, 95, + /* 850 */ 94, 94, 94, 93, 351, 832, 74, 452, 451, 958, + /* 860 */ 958, 819, 959, 960, 120, 92, 89, 178, 945, 2, + /* 870 */ 918, 965, 268, 1, 976, 76, 445, 762, 3, 708, + /* 880 */ 901, 901, 387, 958, 958, 757, 919, 371, 740, 778, + /* 890 */ 756, 257, 824, 824, 826, 827, 19, 417, 741, 450, + /* 900 */ 24, 959, 960, 83, 84, 369, 958, 958, 177, 226, + /* 910 */ 85, 352, 352, 885, 315, 314, 313, 215, 311, 10, + /* 920 */ 10, 683, 448, 349, 348, 959, 960, 909, 777, 157, + /* 930 */ 120, 958, 958, 337, 776, 416, 711, 310, 450, 434, + /* 940 */ 450, 321, 450, 791, 103, 200, 175, 450, 959, 960, + /* 950 */ 908, 832, 792, 452, 451, 9, 9, 819, 10, 10, + /* 960 */ 52, 52, 51, 51, 180, 716, 248, 10, 10, 171, + /* 970 */ 170, 167, 339, 959, 960, 247, 984, 702, 702, 450, + /* 980 */ 715, 233, 686, 982, 889, 983, 182, 914, 824, 824, + /* 990 */ 826, 827, 19, 183, 256, 423, 132, 181, 394, 10, + /* 1000 */ 10, 889, 891, 749, 958, 958, 917, 268, 985, 198, + /* 1010 */ 985, 349, 348, 425, 415, 299, 817, 832, 326, 825, + /* 1020 */ 120, 332, 133, 819, 268, 98, 98, 98, 98, 91, + /* 1030 */ 96, 96, 96, 96, 95, 95, 94, 94, 94, 93, + /* 1040 */ 351, 157, 810, 371, 382, 359, 959, 960, 358, 268, + /* 1050 */ 450, 918, 368, 324, 824, 824, 826, 450, 709, 450, + /* 1060 */ 264, 380, 889, 450, 877, 746, 253, 919, 255, 433, + /* 1070 */ 36, 36, 234, 450, 234, 120, 269, 37, 37, 12, + /* 1080 */ 12, 334, 272, 27, 27, 450, 330, 118, 450, 162, + /* 1090 */ 742, 280, 450, 38, 38, 450, 985, 356, 985, 450, + /* 1100 */ 709, 1210, 450, 132, 450, 39, 39, 450, 40, 40, + /* 1110 */ 450, 362, 41, 41, 450, 42, 42, 450, 254, 28, + /* 1120 */ 28, 450, 29, 29, 31, 31, 450, 43, 43, 450, + /* 1130 */ 44, 44, 450, 714, 45, 45, 450, 11, 11, 767, + /* 1140 */ 450, 46, 46, 450, 268, 450, 105, 105, 450, 47, + /* 1150 */ 47, 450, 48, 48, 450, 237, 33, 33, 450, 172, + /* 1160 */ 49, 49, 450, 50, 50, 34, 34, 274, 122, 122, + /* 1170 */ 450, 123, 123, 450, 124, 124, 450, 898, 56, 56, + /* 1180 */ 450, 897, 35, 35, 450, 267, 450, 817, 450, 817, + /* 1190 */ 106, 106, 450, 53, 53, 385, 107, 107, 450, 817, + /* 1200 */ 108, 108, 817, 450, 104, 104, 121, 121, 119, 119, + /* 1210 */ 450, 117, 112, 112, 450, 276, 450, 225, 111, 111, + /* 1220 */ 450, 730, 450, 109, 109, 450, 673, 674, 675, 912, + /* 1230 */ 110, 110, 317, 998, 55, 55, 57, 57, 692, 331, + /* 1240 */ 54, 54, 26, 26, 696, 30, 30, 317, 937, 197, + /* 1250 */ 196, 195, 335, 281, 336, 446, 331, 745, 689, 436, + /* 1260 */ 440, 444, 120, 72, 386, 223, 175, 345, 757, 933, + /* 1270 */ 20, 286, 319, 756, 815, 372, 374, 202, 202, 202, + /* 1280 */ 263, 395, 285, 74, 208, 21, 696, 719, 718, 884, + /* 1290 */ 120, 120, 120, 120, 120, 754, 278, 828, 77, 74, + /* 1300 */ 726, 727, 785, 783, 880, 202, 999, 208, 894, 893, + /* 1310 */ 894, 893, 694, 816, 763, 116, 774, 1290, 431, 432, + /* 1320 */ 302, 999, 390, 303, 823, 697, 691, 680, 159, 289, + /* 1330 */ 679, 884, 681, 952, 291, 218, 293, 7, 316, 828, + /* 1340 */ 173, 805, 259, 364, 252, 911, 376, 713, 295, 435, + /* 1350 */ 308, 168, 955, 993, 135, 400, 990, 284, 882, 881, + /* 1360 */ 205, 928, 926, 59, 333, 62, 144, 156, 130, 72, + /* 1370 */ 802, 366, 367, 393, 137, 185, 189, 160, 139, 383, + /* 1380 */ 67, 896, 140, 141, 142, 148, 389, 812, 775, 266, + /* 1390 */ 219, 190, 154, 391, 913, 876, 271, 406, 191, 322, + /* 1400 */ 682, 733, 192, 342, 732, 724, 731, 711, 723, 421, + /* 1410 */ 705, 71, 323, 6, 204, 771, 288, 79, 297, 346, + /* 1420 */ 772, 704, 290, 283, 703, 770, 292, 294, 967, 239, + /* 1430 */ 769, 102, 862, 438, 426, 240, 424, 442, 73, 213, + /* 1440 */ 688, 238, 22, 453, 953, 214, 217, 216, 454, 677, + /* 1450 */ 676, 671, 753, 125, 115, 235, 126, 669, 353, 166, + /* 1460 */ 127, 244, 179, 357, 306, 304, 305, 307, 113, 892, + /* 1470 */ 327, 890, 811, 328, 134, 128, 136, 138, 743, 258, + /* 1480 */ 907, 184, 143, 129, 910, 186, 63, 64, 145, 187, + /* 1490 */ 906, 65, 8, 66, 13, 188, 202, 899, 265, 149, + /* 1500 */ 987, 388, 150, 685, 161, 392, 285, 193, 279, 396, + /* 1510 */ 151, 401, 68, 14, 15, 722, 69, 236, 831, 131, + /* 1520 */ 830, 860, 70, 751, 16, 414, 755, 4, 174, 220, + /* 1530 */ 222, 784, 201, 152, 779, 77, 74, 17, 18, 875, + /* 1540 */ 861, 859, 916, 864, 915, 207, 206, 942, 163, 437, + /* 1550 */ 948, 943, 164, 209, 1002, 441, 863, 165, 210, 829, + /* 1560 */ 695, 87, 312, 211, 1292, 1291, 309, }; static const YYCODETYPE yy_lookahead[] = { - /* 0 */ 19, 22, 22, 23, 1, 24, 26, 15, 27, 80, - /* 10 */ 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, - /* 20 */ 91, 92, 93, 94, 95, 108, 109, 110, 27, 28, - /* 30 */ 23, 50, 51, 80, 81, 82, 83, 122, 85, 86, - /* 40 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 22, - /* 50 */ 70, 23, 71, 72, 73, 74, 75, 76, 77, 78, - /* 60 */ 79, 80, 81, 82, 83, 122, 85, 86, 87, 88, - /* 70 */ 89, 90, 91, 92, 93, 94, 95, 19, 97, 91, - /* 80 */ 92, 93, 94, 95, 26, 85, 86, 87, 88, 89, - /* 90 */ 90, 91, 92, 93, 94, 95, 27, 28, 97, 98, - /* 100 */ 99, 122, 211, 102, 103, 104, 79, 19, 50, 51, - /* 110 */ 19, 122, 59, 55, 113, 224, 225, 226, 89, 90, - /* 120 */ 91, 92, 93, 94, 95, 23, 27, 28, 26, 71, - /* 130 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, - /* 140 */ 82, 83, 51, 85, 86, 87, 88, 89, 90, 91, - /* 150 */ 92, 93, 94, 95, 19, 132, 133, 58, 89, 90, - /* 160 */ 21, 108, 109, 110, 27, 28, 97, 98, 33, 100, - /* 170 */ 7, 8, 119, 120, 22, 19, 107, 42, 109, 27, - /* 180 */ 28, 27, 28, 95, 28, 50, 51, 99, 100, 101, - /* 190 */ 102, 103, 104, 105, 27, 28, 97, 98, 107, 152, - /* 200 */ 112, 132, 133, 112, 65, 69, 71, 72, 73, 74, - /* 210 */ 75, 76, 77, 78, 79, 80, 81, 82, 83, 11, - /* 220 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 230 */ 95, 19, 101, 97, 97, 98, 24, 101, 122, 157, - /* 240 */ 12, 99, 103, 112, 102, 103, 104, 152, 22, 97, - /* 250 */ 98, 97, 98, 27, 28, 113, 27, 29, 91, 164, - /* 260 */ 165, 124, 50, 51, 97, 98, 219, 59, 132, 133, - /* 270 */ 134, 22, 23, 45, 66, 47, 212, 213, 124, 140, - /* 280 */ 132, 133, 19, 71, 72, 73, 74, 75, 76, 77, - /* 290 */ 78, 79, 80, 81, 82, 83, 152, 85, 86, 87, - /* 300 */ 88, 89, 90, 91, 92, 93, 94, 95, 164, 165, - /* 310 */ 27, 28, 230, 50, 51, 233, 108, 109, 110, 70, - /* 320 */ 16, 59, 23, 97, 98, 26, 97, 22, 66, 185, - /* 330 */ 12, 187, 27, 28, 71, 72, 73, 74, 75, 76, - /* 340 */ 77, 78, 79, 80, 81, 82, 83, 29, 85, 86, - /* 350 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 19, - /* 360 */ 22, 148, 149, 45, 23, 47, 62, 154, 64, 156, - /* 370 */ 108, 109, 110, 37, 69, 23, 163, 59, 26, 26, - /* 380 */ 97, 98, 144, 145, 146, 147, 152, 200, 52, 23, - /* 390 */ 50, 51, 26, 22, 89, 90, 60, 210, 7, 8, - /* 400 */ 9, 138, 97, 22, 23, 26, 101, 26, 174, 175, - /* 410 */ 197, 71, 72, 73, 74, 75, 76, 77, 78, 79, - /* 420 */ 80, 81, 82, 83, 16, 85, 86, 87, 88, 89, - /* 430 */ 90, 91, 92, 93, 94, 95, 19, 132, 133, 134, - /* 440 */ 23, 152, 208, 209, 140, 152, 152, 111, 195, 196, - /* 450 */ 98, 70, 163, 160, 152, 23, 22, 164, 165, 246, - /* 460 */ 207, 27, 152, 174, 175, 171, 172, 50, 51, 137, - /* 470 */ 62, 139, 64, 171, 172, 222, 124, 27, 138, 24, - /* 480 */ 163, 89, 90, 130, 174, 175, 197, 163, 71, 72, - /* 490 */ 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, - /* 500 */ 83, 22, 85, 86, 87, 88, 89, 90, 91, 92, - /* 510 */ 93, 94, 95, 19, 197, 181, 182, 23, 208, 209, - /* 520 */ 152, 197, 26, 189, 132, 133, 232, 224, 225, 226, - /* 530 */ 152, 97, 91, 26, 232, 116, 212, 213, 152, 222, - /* 540 */ 121, 152, 174, 175, 50, 51, 243, 97, 22, 23, - /* 550 */ 22, 234, 174, 175, 177, 23, 239, 116, 163, 177, - /* 560 */ 174, 175, 121, 174, 175, 71, 72, 73, 74, 75, - /* 570 */ 76, 77, 78, 79, 80, 81, 82, 83, 24, 85, - /* 580 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - /* 590 */ 19, 23, 197, 11, 23, 227, 70, 208, 220, 152, - /* 600 */ 31, 224, 225, 226, 35, 98, 224, 225, 226, 108, - /* 610 */ 109, 110, 115, 152, 117, 118, 27, 222, 49, 123, - /* 620 */ 24, 50, 51, 27, 0, 1, 2, 224, 225, 226, - /* 630 */ 166, 124, 168, 169, 239, 174, 175, 170, 171, 172, - /* 640 */ 22, 194, 71, 72, 73, 74, 75, 76, 77, 78, - /* 650 */ 79, 80, 81, 82, 83, 152, 85, 86, 87, 88, - /* 660 */ 89, 90, 91, 92, 93, 94, 95, 19, 22, 208, - /* 670 */ 24, 23, 195, 196, 170, 171, 172, 174, 175, 152, - /* 680 */ 26, 152, 152, 152, 207, 152, 97, 152, 23, 152, - /* 690 */ 51, 244, 152, 97, 152, 247, 248, 23, 50, 51, - /* 700 */ 26, 174, 175, 174, 175, 174, 175, 174, 175, 174, - /* 710 */ 175, 174, 175, 23, 174, 175, 174, 175, 188, 71, - /* 720 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, - /* 730 */ 82, 83, 152, 85, 86, 87, 88, 89, 90, 91, - /* 740 */ 92, 93, 94, 95, 19, 152, 107, 152, 33, 24, - /* 750 */ 152, 100, 101, 27, 174, 175, 152, 42, 152, 23, - /* 760 */ 152, 26, 152, 23, 152, 26, 152, 174, 175, 174, - /* 770 */ 175, 152, 174, 175, 23, 50, 51, 26, 174, 175, - /* 780 */ 174, 175, 174, 175, 174, 175, 174, 175, 174, 175, - /* 790 */ 163, 119, 120, 174, 175, 19, 71, 72, 73, 74, - /* 800 */ 75, 76, 77, 78, 79, 80, 81, 82, 83, 152, - /* 810 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 820 */ 95, 66, 152, 97, 197, 23, 50, 51, 26, 53, - /* 830 */ 23, 174, 175, 26, 23, 23, 23, 26, 26, 26, - /* 840 */ 36, 106, 146, 147, 174, 175, 19, 71, 72, 73, - /* 850 */ 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, - /* 860 */ 152, 85, 86, 87, 88, 89, 90, 91, 92, 93, - /* 870 */ 94, 95, 152, 196, 119, 120, 19, 50, 51, 168, - /* 880 */ 169, 26, 174, 175, 207, 28, 152, 249, 250, 152, - /* 890 */ 163, 163, 163, 163, 174, 175, 163, 19, 71, 72, - /* 900 */ 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, - /* 910 */ 83, 152, 85, 86, 87, 88, 89, 90, 91, 92, - /* 920 */ 93, 94, 95, 152, 197, 197, 197, 197, 50, 51, - /* 930 */ 197, 194, 36, 174, 175, 191, 192, 152, 191, 192, - /* 940 */ 163, 152, 66, 124, 152, 174, 175, 152, 19, 71, - /* 950 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, - /* 960 */ 82, 83, 152, 85, 86, 87, 88, 89, 90, 91, - /* 970 */ 92, 93, 94, 95, 197, 152, 100, 188, 152, 50, - /* 980 */ 51, 152, 152, 188, 174, 175, 252, 152, 94, 95, - /* 990 */ 152, 152, 152, 1, 2, 152, 152, 174, 175, 19, - /* 1000 */ 152, 72, 73, 74, 75, 76, 77, 78, 79, 80, - /* 1010 */ 81, 82, 83, 152, 85, 86, 87, 88, 89, 90, - /* 1020 */ 91, 92, 93, 94, 95, 152, 188, 188, 22, 194, - /* 1030 */ 50, 51, 240, 173, 194, 174, 175, 252, 194, 152, - /* 1040 */ 36, 181, 28, 152, 23, 219, 122, 174, 175, 219, - /* 1050 */ 221, 152, 152, 73, 74, 75, 76, 77, 78, 79, - /* 1060 */ 80, 81, 82, 83, 152, 85, 86, 87, 88, 89, - /* 1070 */ 90, 91, 92, 93, 94, 95, 19, 20, 152, 22, - /* 1080 */ 23, 194, 152, 240, 27, 28, 174, 175, 240, 19, - /* 1090 */ 20, 26, 22, 194, 194, 38, 22, 27, 28, 152, - /* 1100 */ 23, 22, 152, 116, 174, 175, 152, 23, 38, 152, - /* 1110 */ 23, 152, 221, 152, 57, 152, 23, 163, 50, 51, - /* 1120 */ 194, 174, 175, 66, 174, 175, 69, 57, 174, 175, - /* 1130 */ 40, 174, 175, 174, 175, 174, 175, 174, 175, 69, - /* 1140 */ 22, 53, 74, 75, 30, 53, 89, 90, 22, 22, - /* 1150 */ 152, 197, 23, 96, 97, 98, 22, 152, 101, 89, - /* 1160 */ 90, 91, 208, 209, 152, 53, 96, 97, 98, 101, - /* 1170 */ 22, 101, 174, 175, 152, 19, 20, 105, 22, 174, - /* 1180 */ 175, 112, 19, 27, 28, 20, 174, 175, 24, 132, - /* 1190 */ 133, 134, 135, 136, 38, 44, 174, 175, 107, 61, - /* 1200 */ 54, 26, 132, 133, 134, 135, 136, 54, 107, 22, - /* 1210 */ 5, 140, 1, 57, 36, 111, 122, 28, 79, 79, - /* 1220 */ 131, 123, 66, 19, 20, 69, 22, 1, 16, 20, - /* 1230 */ 125, 27, 28, 123, 111, 120, 23, 131, 23, 16, - /* 1240 */ 68, 142, 38, 15, 22, 89, 90, 3, 167, 4, - /* 1250 */ 248, 251, 96, 97, 98, 180, 180, 101, 251, 151, - /* 1260 */ 6, 57, 151, 13, 151, 26, 25, 151, 161, 202, - /* 1270 */ 153, 162, 153, 69, 130, 128, 203, 19, 20, 127, - /* 1280 */ 22, 126, 204, 129, 22, 27, 28, 205, 132, 133, - /* 1290 */ 134, 135, 136, 89, 90, 231, 38, 95, 137, 179, - /* 1300 */ 96, 97, 98, 206, 179, 101, 122, 107, 159, 159, - /* 1310 */ 125, 231, 216, 228, 107, 57, 184, 217, 216, 176, - /* 1320 */ 217, 176, 48, 106, 18, 184, 158, 69, 159, 158, - /* 1330 */ 46, 71, 237, 176, 176, 176, 132, 133, 134, 135, - /* 1340 */ 136, 217, 176, 137, 216, 178, 158, 89, 90, 179, - /* 1350 */ 176, 159, 179, 159, 96, 97, 98, 159, 159, 101, - /* 1360 */ 5, 158, 202, 22, 18, 10, 11, 12, 13, 14, - /* 1370 */ 190, 238, 17, 190, 158, 193, 41, 159, 202, 193, - /* 1380 */ 159, 202, 245, 193, 193, 223, 190, 32, 159, 34, - /* 1390 */ 132, 133, 134, 135, 136, 159, 39, 155, 43, 150, - /* 1400 */ 223, 177, 201, 178, 177, 186, 66, 199, 177, 152, - /* 1410 */ 253, 56, 215, 152, 182, 152, 202, 152, 63, 152, - /* 1420 */ 152, 66, 67, 242, 229, 152, 174, 152, 152, 152, - /* 1430 */ 152, 152, 152, 152, 199, 242, 202, 152, 198, 152, - /* 1440 */ 152, 152, 183, 192, 152, 215, 152, 183, 215, 183, - /* 1450 */ 152, 241, 214, 152, 211, 152, 152, 211, 211, 152, - /* 1460 */ 152, 241, 152, 152, 152, 152, 152, 152, 152, 114, - /* 1470 */ 152, 152, 235, 152, 152, 152, 174, 187, 95, 174, - /* 1480 */ 253, 253, 253, 253, 236, 253, 253, 253, 253, 253, - /* 1490 */ 253, 253, 253, 253, 253, 253, 141, + /* 0 */ 19, 95, 53, 97, 22, 24, 24, 101, 27, 28, + /* 10 */ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, + /* 20 */ 39, 40, 41, 152, 43, 44, 45, 46, 47, 48, + /* 30 */ 49, 50, 51, 52, 53, 19, 55, 55, 132, 133, + /* 40 */ 134, 1, 2, 27, 28, 29, 30, 31, 32, 33, + /* 50 */ 34, 35, 36, 37, 38, 39, 40, 41, 187, 43, + /* 60 */ 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, + /* 70 */ 47, 48, 49, 50, 51, 52, 53, 61, 97, 97, + /* 80 */ 19, 49, 50, 51, 52, 53, 70, 26, 27, 28, + /* 90 */ 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, + /* 100 */ 39, 40, 41, 152, 43, 44, 45, 46, 47, 48, + /* 110 */ 49, 50, 51, 52, 53, 144, 145, 146, 147, 19, + /* 120 */ 16, 22, 92, 172, 173, 52, 53, 27, 28, 29, + /* 130 */ 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, + /* 140 */ 40, 41, 81, 43, 44, 45, 46, 47, 48, 49, + /* 150 */ 50, 51, 52, 53, 55, 56, 19, 152, 207, 208, + /* 160 */ 115, 24, 117, 118, 27, 28, 29, 30, 31, 32, + /* 170 */ 33, 34, 35, 36, 37, 38, 39, 40, 41, 79, + /* 180 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 190 */ 53, 19, 88, 157, 90, 23, 97, 98, 193, 27, + /* 200 */ 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + /* 210 */ 38, 39, 40, 41, 152, 43, 44, 45, 46, 47, + /* 220 */ 48, 49, 50, 51, 52, 53, 19, 22, 23, 172, + /* 230 */ 23, 26, 119, 120, 27, 28, 29, 30, 31, 32, + /* 240 */ 33, 34, 35, 36, 37, 38, 39, 40, 41, 187, + /* 250 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 260 */ 53, 19, 22, 23, 228, 23, 26, 231, 152, 27, + /* 270 */ 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + /* 280 */ 38, 39, 40, 41, 172, 43, 44, 45, 46, 47, + /* 290 */ 48, 49, 50, 51, 52, 53, 19, 221, 222, 223, + /* 300 */ 23, 96, 152, 172, 27, 28, 29, 30, 31, 32, + /* 310 */ 33, 34, 35, 36, 37, 38, 39, 40, 41, 152, + /* 320 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 330 */ 53, 19, 0, 1, 2, 23, 96, 190, 191, 27, + /* 340 */ 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + /* 350 */ 38, 39, 40, 41, 238, 43, 44, 45, 46, 47, + /* 360 */ 48, 49, 50, 51, 52, 53, 19, 185, 218, 221, + /* 370 */ 222, 223, 152, 152, 27, 28, 29, 30, 31, 32, + /* 380 */ 33, 34, 35, 36, 37, 38, 39, 40, 41, 241, + /* 390 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 400 */ 53, 19, 152, 168, 169, 170, 22, 190, 191, 27, + /* 410 */ 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + /* 420 */ 38, 39, 40, 41, 152, 43, 44, 45, 46, 47, + /* 430 */ 48, 49, 50, 51, 52, 53, 19, 19, 218, 55, + /* 440 */ 56, 24, 22, 152, 27, 28, 29, 30, 31, 32, + /* 450 */ 33, 34, 35, 36, 37, 38, 39, 40, 41, 152, + /* 460 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 470 */ 53, 250, 194, 195, 56, 55, 56, 55, 19, 172, + /* 480 */ 173, 97, 98, 152, 206, 138, 27, 28, 29, 30, + /* 490 */ 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + /* 500 */ 41, 152, 43, 44, 45, 46, 47, 48, 49, 50, + /* 510 */ 51, 52, 53, 19, 207, 208, 152, 97, 98, 97, + /* 520 */ 138, 27, 28, 29, 30, 31, 32, 33, 34, 35, + /* 530 */ 36, 37, 38, 39, 40, 41, 181, 43, 44, 45, + /* 540 */ 46, 47, 48, 49, 50, 51, 52, 53, 19, 30, + /* 550 */ 31, 32, 33, 247, 248, 19, 152, 28, 29, 30, + /* 560 */ 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + /* 570 */ 41, 152, 43, 44, 45, 46, 47, 48, 49, 50, + /* 580 */ 51, 52, 53, 19, 168, 169, 170, 238, 19, 53, + /* 590 */ 152, 172, 173, 29, 30, 31, 32, 33, 34, 35, + /* 600 */ 36, 37, 38, 39, 40, 41, 152, 43, 44, 45, + /* 610 */ 46, 47, 48, 49, 50, 51, 52, 53, 19, 20, + /* 620 */ 101, 22, 23, 169, 170, 56, 207, 85, 55, 56, + /* 630 */ 23, 19, 20, 26, 22, 99, 100, 101, 102, 103, + /* 640 */ 104, 105, 238, 152, 152, 210, 47, 48, 112, 152, + /* 650 */ 108, 109, 110, 54, 55, 56, 221, 222, 223, 47, + /* 660 */ 48, 119, 120, 172, 173, 66, 54, 55, 56, 152, + /* 670 */ 97, 98, 99, 148, 149, 102, 103, 104, 66, 154, + /* 680 */ 23, 156, 83, 26, 230, 152, 113, 152, 163, 194, + /* 690 */ 195, 92, 92, 30, 95, 83, 97, 98, 207, 208, + /* 700 */ 101, 206, 179, 180, 92, 172, 173, 95, 152, 97, + /* 710 */ 98, 188, 99, 101, 219, 102, 103, 104, 152, 119, + /* 720 */ 120, 196, 55, 56, 19, 20, 113, 22, 193, 163, + /* 730 */ 11, 132, 133, 134, 135, 136, 24, 65, 172, 173, + /* 740 */ 207, 208, 250, 152, 132, 133, 134, 135, 136, 193, + /* 750 */ 78, 84, 47, 48, 49, 98, 199, 152, 86, 54, + /* 760 */ 55, 56, 196, 152, 97, 98, 209, 55, 163, 244, + /* 770 */ 107, 66, 152, 207, 208, 164, 175, 172, 173, 19, + /* 780 */ 20, 124, 22, 111, 38, 39, 40, 41, 83, 43, + /* 790 */ 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, + /* 800 */ 95, 196, 97, 98, 85, 152, 101, 47, 48, 97, + /* 810 */ 85, 92, 207, 193, 54, 55, 56, 92, 49, 175, + /* 820 */ 55, 56, 221, 222, 223, 12, 66, 108, 109, 110, + /* 830 */ 137, 163, 139, 108, 109, 110, 26, 132, 133, 134, + /* 840 */ 135, 136, 152, 83, 43, 44, 45, 46, 47, 48, + /* 850 */ 49, 50, 51, 52, 53, 95, 26, 97, 98, 55, + /* 860 */ 56, 101, 97, 98, 196, 221, 222, 223, 146, 147, + /* 870 */ 57, 171, 152, 22, 26, 19, 20, 49, 22, 179, + /* 880 */ 108, 109, 110, 55, 56, 116, 73, 219, 75, 124, + /* 890 */ 121, 152, 132, 133, 134, 135, 136, 163, 85, 152, + /* 900 */ 232, 97, 98, 47, 48, 237, 55, 56, 98, 5, + /* 910 */ 54, 55, 56, 193, 10, 11, 12, 13, 14, 172, + /* 920 */ 173, 17, 66, 47, 48, 97, 98, 152, 124, 152, + /* 930 */ 196, 55, 56, 186, 124, 152, 106, 160, 152, 83, + /* 940 */ 152, 164, 152, 61, 22, 211, 212, 152, 97, 98, + /* 950 */ 152, 95, 70, 97, 98, 172, 173, 101, 172, 173, + /* 960 */ 172, 173, 172, 173, 60, 181, 62, 172, 173, 47, + /* 970 */ 48, 123, 186, 97, 98, 71, 100, 55, 56, 152, + /* 980 */ 181, 186, 21, 107, 152, 109, 82, 163, 132, 133, + /* 990 */ 134, 135, 136, 89, 16, 207, 92, 93, 19, 172, + /* 1000 */ 173, 169, 170, 195, 55, 56, 12, 152, 132, 30, + /* 1010 */ 134, 47, 48, 186, 206, 225, 152, 95, 114, 97, + /* 1020 */ 196, 245, 246, 101, 152, 38, 39, 40, 41, 42, + /* 1030 */ 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, + /* 1040 */ 53, 152, 163, 219, 152, 141, 97, 98, 193, 152, + /* 1050 */ 152, 57, 91, 164, 132, 133, 134, 152, 55, 152, + /* 1060 */ 152, 237, 230, 152, 103, 193, 88, 73, 90, 75, + /* 1070 */ 172, 173, 183, 152, 185, 196, 152, 172, 173, 172, + /* 1080 */ 173, 217, 152, 172, 173, 152, 107, 22, 152, 24, + /* 1090 */ 193, 112, 152, 172, 173, 152, 132, 242, 134, 152, + /* 1100 */ 97, 140, 152, 92, 152, 172, 173, 152, 172, 173, + /* 1110 */ 152, 100, 172, 173, 152, 172, 173, 152, 140, 172, + /* 1120 */ 173, 152, 172, 173, 172, 173, 152, 172, 173, 152, + /* 1130 */ 172, 173, 152, 152, 172, 173, 152, 172, 173, 213, + /* 1140 */ 152, 172, 173, 152, 152, 152, 172, 173, 152, 172, + /* 1150 */ 173, 152, 172, 173, 152, 210, 172, 173, 152, 26, + /* 1160 */ 172, 173, 152, 172, 173, 172, 173, 152, 172, 173, + /* 1170 */ 152, 172, 173, 152, 172, 173, 152, 59, 172, 173, + /* 1180 */ 152, 63, 172, 173, 152, 193, 152, 152, 152, 152, + /* 1190 */ 172, 173, 152, 172, 173, 77, 172, 173, 152, 152, + /* 1200 */ 172, 173, 152, 152, 172, 173, 172, 173, 172, 173, + /* 1210 */ 152, 22, 172, 173, 152, 152, 152, 22, 172, 173, + /* 1220 */ 152, 152, 152, 172, 173, 152, 7, 8, 9, 163, + /* 1230 */ 172, 173, 22, 23, 172, 173, 172, 173, 166, 167, + /* 1240 */ 172, 173, 172, 173, 55, 172, 173, 22, 23, 108, + /* 1250 */ 109, 110, 217, 152, 217, 166, 167, 163, 163, 163, + /* 1260 */ 163, 163, 196, 130, 217, 211, 212, 217, 116, 23, + /* 1270 */ 22, 101, 26, 121, 23, 23, 23, 26, 26, 26, + /* 1280 */ 23, 23, 112, 26, 26, 37, 97, 100, 101, 55, + /* 1290 */ 196, 196, 196, 196, 196, 23, 23, 55, 26, 26, + /* 1300 */ 7, 8, 23, 152, 23, 26, 96, 26, 132, 132, + /* 1310 */ 134, 134, 23, 152, 152, 26, 152, 122, 152, 191, + /* 1320 */ 152, 96, 234, 152, 152, 152, 152, 152, 197, 210, + /* 1330 */ 152, 97, 152, 152, 210, 233, 210, 198, 150, 97, + /* 1340 */ 184, 201, 239, 214, 214, 201, 239, 180, 214, 227, + /* 1350 */ 200, 198, 155, 67, 243, 176, 69, 175, 175, 175, + /* 1360 */ 122, 159, 159, 240, 159, 240, 22, 220, 27, 130, + /* 1370 */ 201, 18, 159, 18, 189, 158, 158, 220, 192, 159, + /* 1380 */ 137, 236, 192, 192, 192, 189, 74, 189, 159, 235, + /* 1390 */ 159, 158, 22, 177, 201, 201, 159, 107, 158, 177, + /* 1400 */ 159, 174, 158, 76, 174, 182, 174, 106, 182, 125, + /* 1410 */ 174, 107, 177, 22, 159, 216, 215, 137, 159, 53, + /* 1420 */ 216, 176, 215, 174, 174, 216, 215, 215, 174, 229, + /* 1430 */ 216, 129, 224, 177, 126, 229, 127, 177, 128, 25, + /* 1440 */ 162, 226, 26, 161, 13, 153, 6, 153, 151, 151, + /* 1450 */ 151, 151, 205, 165, 178, 178, 165, 4, 3, 22, + /* 1460 */ 165, 142, 15, 94, 202, 204, 203, 201, 16, 23, + /* 1470 */ 249, 23, 120, 249, 246, 111, 131, 123, 20, 16, + /* 1480 */ 1, 125, 123, 111, 56, 64, 37, 37, 131, 122, + /* 1490 */ 1, 37, 5, 37, 22, 107, 26, 80, 140, 80, + /* 1500 */ 87, 72, 107, 20, 24, 19, 112, 105, 23, 79, + /* 1510 */ 22, 79, 22, 22, 22, 58, 22, 79, 23, 68, + /* 1520 */ 23, 23, 26, 116, 22, 26, 23, 22, 122, 23, + /* 1530 */ 23, 56, 64, 22, 124, 26, 26, 64, 64, 23, + /* 1540 */ 23, 23, 23, 11, 23, 22, 26, 23, 22, 24, + /* 1550 */ 1, 23, 22, 26, 251, 24, 23, 22, 122, 23, + /* 1560 */ 23, 22, 15, 122, 122, 122, 23, }; -#define YY_SHIFT_USE_DFLT (-86) -#define YY_SHIFT_COUNT (429) -#define YY_SHIFT_MIN (-85) -#define YY_SHIFT_MAX (1383) +#define YY_SHIFT_USE_DFLT (1567) +#define YY_SHIFT_COUNT (455) +#define YY_SHIFT_MIN (-94) +#define YY_SHIFT_MAX (1549) static const short yy_shift_ofst[] = { - /* 0 */ 992, 1057, 1355, 1156, 1204, 1204, 1, 262, -19, 135, - /* 10 */ 135, 776, 1204, 1204, 1204, 1204, 69, 69, 53, 208, - /* 20 */ 283, 755, 58, 725, 648, 571, 494, 417, 340, 263, - /* 30 */ 212, 827, 827, 827, 827, 827, 827, 827, 827, 827, - /* 40 */ 827, 827, 827, 827, 827, 827, 878, 827, 929, 980, - /* 50 */ 980, 1070, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 60 */ 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 70 */ 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 80 */ 1258, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 90 */ 1204, 1204, 1204, 1204, -71, -47, -47, -47, -47, -47, - /* 100 */ 0, 29, -12, 283, 283, 139, 91, 392, 392, 894, - /* 110 */ 672, 726, 1383, -86, -86, -86, 88, 318, 318, 99, - /* 120 */ 381, -20, 283, 283, 283, 283, 283, 283, 283, 283, - /* 130 */ 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, - /* 140 */ 283, 283, 283, 283, 624, 876, 726, 672, 1340, 1340, - /* 150 */ 1340, 1340, 1340, 1340, -86, -86, -86, 305, 136, 136, - /* 160 */ 142, 167, 226, 154, 137, 152, 283, 283, 283, 283, - /* 170 */ 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, - /* 180 */ 283, 283, 283, 336, 336, 336, 283, 283, 352, 283, - /* 190 */ 283, 283, 283, 283, 228, 283, 283, 283, 283, 283, - /* 200 */ 283, 283, 283, 283, 283, 501, 569, 596, 596, 596, - /* 210 */ 507, 497, 441, 391, 353, 156, 156, 857, 353, 857, - /* 220 */ 735, 813, 639, 715, 156, 332, 715, 715, 496, 419, - /* 230 */ 646, 1357, 1184, 1184, 1335, 1335, 1184, 1341, 1260, 1144, - /* 240 */ 1346, 1346, 1346, 1346, 1184, 1306, 1144, 1341, 1260, 1260, - /* 250 */ 1144, 1184, 1306, 1206, 1284, 1184, 1184, 1306, 1184, 1306, - /* 260 */ 1184, 1306, 1262, 1207, 1207, 1207, 1274, 1262, 1207, 1217, - /* 270 */ 1207, 1274, 1207, 1207, 1185, 1200, 1185, 1200, 1185, 1200, - /* 280 */ 1184, 1184, 1161, 1262, 1202, 1202, 1262, 1154, 1155, 1147, - /* 290 */ 1152, 1144, 1241, 1239, 1250, 1250, 1254, 1254, 1254, 1254, - /* 300 */ -86, -86, -86, -86, -86, -86, 1068, 304, 526, 249, - /* 310 */ 408, -83, 434, 812, 27, 811, 807, 802, 751, 589, - /* 320 */ 651, 163, 131, 674, 366, 450, 299, 148, 23, 102, - /* 330 */ 229, -21, 1245, 1244, 1222, 1099, 1228, 1172, 1223, 1215, - /* 340 */ 1213, 1115, 1106, 1123, 1110, 1209, 1105, 1212, 1226, 1098, - /* 350 */ 1089, 1140, 1139, 1104, 1189, 1178, 1094, 1211, 1205, 1187, - /* 360 */ 1101, 1071, 1153, 1175, 1146, 1138, 1151, 1091, 1164, 1165, - /* 370 */ 1163, 1069, 1072, 1148, 1112, 1134, 1127, 1129, 1126, 1092, - /* 380 */ 1114, 1118, 1088, 1090, 1093, 1087, 1084, 987, 1079, 1077, - /* 390 */ 1074, 1065, 924, 1021, 1014, 1004, 1006, 819, 739, 896, - /* 400 */ 855, 804, 739, 740, 736, 690, 654, 665, 618, 582, - /* 410 */ 568, 528, 554, 379, 532, 479, 455, 379, 432, 371, - /* 420 */ 341, 28, 338, 116, -11, -57, -85, 7, -8, 3, + /* 0 */ 40, 599, 904, 612, 760, 760, 760, 760, 725, -19, + /* 10 */ 16, 16, 100, 760, 760, 760, 760, 760, 760, 760, + /* 20 */ 876, 876, 573, 542, 719, 600, 61, 137, 172, 207, + /* 30 */ 242, 277, 312, 347, 382, 417, 459, 459, 459, 459, + /* 40 */ 459, 459, 459, 459, 459, 459, 459, 459, 459, 459, + /* 50 */ 459, 459, 459, 494, 459, 529, 564, 564, 705, 760, + /* 60 */ 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, + /* 70 */ 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, + /* 80 */ 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, + /* 90 */ 856, 760, 760, 760, 760, 760, 760, 760, 760, 760, + /* 100 */ 760, 760, 760, 760, 987, 746, 746, 746, 746, 746, + /* 110 */ 801, 23, 32, 949, 961, 979, 964, 964, 949, 73, + /* 120 */ 113, -51, 1567, 1567, 1567, 536, 536, 536, 99, 99, + /* 130 */ 813, 813, 667, 205, 240, 949, 949, 949, 949, 949, + /* 140 */ 949, 949, 949, 949, 949, 949, 949, 949, 949, 949, + /* 150 */ 949, 949, 949, 949, 949, 332, 1011, 422, 422, 113, + /* 160 */ 30, 30, 30, 30, 30, 30, 1567, 1567, 1567, 922, + /* 170 */ -94, -94, 384, 613, 828, 420, 765, 804, 851, 949, + /* 180 */ 949, 949, 949, 949, 949, 949, 949, 949, 949, 949, + /* 190 */ 949, 949, 949, 949, 949, 672, 672, 672, 949, 949, + /* 200 */ 657, 949, 949, 949, -18, 949, 949, 994, 949, 949, + /* 210 */ 949, 949, 949, 949, 949, 949, 949, 949, 772, 1118, + /* 220 */ 712, 712, 712, 810, 45, 769, 1219, 1133, 418, 418, + /* 230 */ 569, 1133, 569, 830, 607, 663, 882, 418, 693, 882, + /* 240 */ 882, 848, 1152, 1065, 1286, 1238, 1238, 1287, 1287, 1238, + /* 250 */ 1344, 1341, 1239, 1353, 1353, 1353, 1353, 1238, 1355, 1239, + /* 260 */ 1344, 1341, 1341, 1239, 1238, 1355, 1243, 1312, 1238, 1238, + /* 270 */ 1355, 1370, 1238, 1355, 1238, 1355, 1370, 1290, 1290, 1290, + /* 280 */ 1327, 1370, 1290, 1301, 1290, 1327, 1290, 1290, 1284, 1304, + /* 290 */ 1284, 1304, 1284, 1304, 1284, 1304, 1238, 1391, 1238, 1280, + /* 300 */ 1370, 1366, 1366, 1370, 1302, 1308, 1310, 1309, 1239, 1414, + /* 310 */ 1416, 1431, 1431, 1440, 1440, 1440, 1440, 1567, 1567, 1567, + /* 320 */ 1567, 1567, 1567, 1567, 1567, 519, 978, 1210, 1225, 104, + /* 330 */ 1141, 1189, 1246, 1248, 1251, 1252, 1253, 1257, 1258, 1273, + /* 340 */ 1003, 1187, 1293, 1170, 1272, 1279, 1234, 1281, 1176, 1177, + /* 350 */ 1289, 1242, 1195, 1453, 1455, 1437, 1319, 1447, 1369, 1452, + /* 360 */ 1446, 1448, 1352, 1345, 1364, 1354, 1458, 1356, 1463, 1479, + /* 370 */ 1359, 1357, 1449, 1450, 1454, 1456, 1372, 1428, 1421, 1367, + /* 380 */ 1489, 1487, 1472, 1388, 1358, 1417, 1470, 1419, 1413, 1429, + /* 390 */ 1395, 1480, 1483, 1486, 1394, 1402, 1488, 1430, 1490, 1491, + /* 400 */ 1485, 1492, 1432, 1457, 1494, 1438, 1451, 1495, 1497, 1498, + /* 410 */ 1496, 1407, 1502, 1503, 1505, 1499, 1406, 1506, 1507, 1475, + /* 420 */ 1468, 1511, 1410, 1509, 1473, 1510, 1474, 1516, 1509, 1517, + /* 430 */ 1518, 1519, 1520, 1521, 1523, 1532, 1524, 1526, 1525, 1527, + /* 440 */ 1528, 1530, 1531, 1527, 1533, 1535, 1536, 1537, 1539, 1436, + /* 450 */ 1441, 1442, 1443, 1543, 1547, 1549, }; -#define YY_REDUCE_USE_DFLT (-110) -#define YY_REDUCE_COUNT (305) -#define YY_REDUCE_MIN (-109) -#define YY_REDUCE_MAX (1323) +#define YY_REDUCE_USE_DFLT (-130) +#define YY_REDUCE_COUNT (324) +#define YY_REDUCE_MIN (-129) +#define YY_REDUCE_MAX (1300) static const short yy_reduce_ofst[] = { - /* 0 */ 238, 954, 213, 289, 310, 234, 144, 317, -109, 382, - /* 10 */ 377, 303, 461, 389, 378, 368, 302, 294, 253, 395, - /* 20 */ 293, 324, 403, 403, 403, 403, 403, 403, 403, 403, - /* 30 */ 403, 403, 403, 403, 403, 403, 403, 403, 403, 403, - /* 40 */ 403, 403, 403, 403, 403, 403, 403, 403, 403, 403, - /* 50 */ 403, 1022, 1012, 1005, 998, 963, 961, 959, 957, 950, - /* 60 */ 947, 930, 912, 873, 861, 823, 810, 771, 759, 720, - /* 70 */ 708, 670, 657, 619, 614, 612, 610, 608, 606, 604, - /* 80 */ 598, 595, 593, 580, 542, 540, 537, 535, 533, 531, - /* 90 */ 529, 527, 503, 386, 403, 403, 403, 403, 403, 403, - /* 100 */ 403, 403, 403, 95, 447, 82, 334, 504, 467, 403, - /* 110 */ 477, 464, 403, 403, 403, 403, 860, 747, 744, 785, - /* 120 */ 638, 638, 926, 891, 900, 899, 887, 844, 840, 835, - /* 130 */ 848, 830, 843, 829, 792, 839, 826, 737, 838, 795, - /* 140 */ 789, 47, 734, 530, 696, 777, 711, 677, 733, 730, - /* 150 */ 729, 728, 727, 627, 448, 64, 187, 1305, 1302, 1252, - /* 160 */ 1290, 1273, 1323, 1322, 1321, 1319, 1318, 1316, 1315, 1314, - /* 170 */ 1313, 1312, 1311, 1310, 1308, 1307, 1304, 1303, 1301, 1298, - /* 180 */ 1294, 1292, 1289, 1266, 1264, 1259, 1288, 1287, 1238, 1285, - /* 190 */ 1281, 1280, 1279, 1278, 1251, 1277, 1276, 1275, 1273, 1268, - /* 200 */ 1267, 1265, 1263, 1261, 1257, 1248, 1237, 1247, 1246, 1243, - /* 210 */ 1238, 1240, 1235, 1249, 1234, 1233, 1230, 1220, 1214, 1210, - /* 220 */ 1225, 1219, 1232, 1231, 1197, 1195, 1227, 1224, 1201, 1208, - /* 230 */ 1242, 1137, 1236, 1229, 1193, 1181, 1221, 1177, 1196, 1179, - /* 240 */ 1191, 1190, 1186, 1182, 1218, 1216, 1176, 1162, 1183, 1180, - /* 250 */ 1160, 1199, 1203, 1133, 1095, 1198, 1194, 1188, 1192, 1171, - /* 260 */ 1169, 1168, 1173, 1174, 1166, 1159, 1141, 1170, 1158, 1167, - /* 270 */ 1157, 1132, 1145, 1143, 1124, 1128, 1103, 1102, 1100, 1096, - /* 280 */ 1150, 1149, 1085, 1125, 1080, 1064, 1120, 1097, 1082, 1078, - /* 290 */ 1073, 1067, 1109, 1107, 1119, 1117, 1116, 1113, 1111, 1108, - /* 300 */ 1007, 1000, 1002, 1076, 1075, 1081, + /* 0 */ -29, 566, 525, 605, -49, 307, 491, 533, 668, 435, + /* 10 */ 601, 644, 148, 747, 786, 795, 419, 788, 827, 790, + /* 20 */ 454, 832, 889, 495, 824, 734, 76, 76, 76, 76, + /* 30 */ 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, + /* 40 */ 76, 76, 76, 76, 76, 76, 76, 76, 76, 76, + /* 50 */ 76, 76, 76, 76, 76, 76, 76, 76, 783, 898, + /* 60 */ 905, 907, 911, 921, 933, 936, 940, 943, 947, 950, + /* 70 */ 952, 955, 958, 962, 965, 969, 974, 977, 980, 984, + /* 80 */ 988, 991, 993, 996, 999, 1002, 1006, 1010, 1018, 1021, + /* 90 */ 1024, 1028, 1032, 1034, 1036, 1040, 1046, 1051, 1058, 1062, + /* 100 */ 1064, 1068, 1070, 1073, 76, 76, 76, 76, 76, 76, + /* 110 */ 76, 76, 76, 855, 36, 523, 235, 416, 777, 76, + /* 120 */ 278, 76, 76, 76, 76, 700, 700, 700, 150, 220, + /* 130 */ 147, 217, 221, 306, 306, 611, 5, 535, 556, 620, + /* 140 */ 720, 872, 897, 116, 864, 349, 1035, 1037, 404, 1047, + /* 150 */ 992, -129, 1050, 492, 62, 722, 879, 1072, 1089, 808, + /* 160 */ 1066, 1094, 1095, 1096, 1097, 1098, 776, 1054, 557, 57, + /* 170 */ 112, 131, 167, 182, 250, 272, 291, 331, 364, 438, + /* 180 */ 497, 517, 591, 653, 690, 739, 775, 798, 892, 908, + /* 190 */ 924, 930, 1015, 1063, 1069, 355, 784, 799, 981, 1101, + /* 200 */ 926, 1151, 1161, 1162, 945, 1164, 1166, 1128, 1168, 1171, + /* 210 */ 1172, 250, 1173, 1174, 1175, 1178, 1180, 1181, 1088, 1102, + /* 220 */ 1119, 1124, 1126, 926, 1131, 1139, 1188, 1140, 1129, 1130, + /* 230 */ 1103, 1144, 1107, 1179, 1156, 1167, 1182, 1134, 1122, 1183, + /* 240 */ 1184, 1150, 1153, 1197, 1111, 1202, 1203, 1123, 1125, 1205, + /* 250 */ 1147, 1185, 1169, 1186, 1190, 1191, 1192, 1213, 1217, 1193, + /* 260 */ 1157, 1196, 1198, 1194, 1220, 1218, 1145, 1154, 1229, 1231, + /* 270 */ 1233, 1216, 1237, 1240, 1241, 1244, 1222, 1227, 1230, 1232, + /* 280 */ 1223, 1235, 1236, 1245, 1249, 1226, 1250, 1254, 1199, 1201, + /* 290 */ 1204, 1207, 1209, 1211, 1214, 1212, 1255, 1208, 1259, 1215, + /* 300 */ 1256, 1200, 1206, 1260, 1247, 1261, 1263, 1262, 1266, 1278, + /* 310 */ 1282, 1292, 1294, 1297, 1298, 1299, 1300, 1221, 1224, 1228, + /* 320 */ 1288, 1291, 1276, 1277, 1295, }; static const YYACTIONTYPE yy_default[] = { - /* 0 */ 647, 964, 964, 964, 878, 878, 969, 964, 774, 802, - /* 10 */ 802, 938, 969, 969, 969, 876, 969, 969, 969, 964, - /* 20 */ 969, 778, 808, 969, 969, 969, 969, 969, 969, 969, - /* 30 */ 969, 937, 939, 816, 815, 918, 789, 813, 806, 810, - /* 40 */ 879, 872, 873, 871, 875, 880, 969, 809, 841, 856, - /* 50 */ 840, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 60 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 70 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 80 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 90 */ 969, 969, 969, 969, 850, 855, 862, 854, 851, 843, - /* 100 */ 842, 844, 845, 969, 969, 673, 739, 969, 969, 846, - /* 110 */ 969, 685, 847, 859, 858, 857, 680, 969, 969, 969, - /* 120 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 130 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 140 */ 969, 969, 969, 969, 647, 964, 969, 969, 964, 964, - /* 150 */ 964, 964, 964, 964, 956, 778, 768, 969, 969, 969, - /* 160 */ 969, 969, 969, 969, 969, 969, 969, 944, 942, 969, - /* 170 */ 891, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 180 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 190 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 200 */ 969, 969, 969, 969, 653, 969, 911, 774, 774, 774, - /* 210 */ 776, 754, 766, 655, 812, 791, 791, 923, 812, 923, - /* 220 */ 710, 733, 707, 802, 791, 874, 802, 802, 775, 766, - /* 230 */ 969, 949, 782, 782, 941, 941, 782, 821, 743, 812, - /* 240 */ 750, 750, 750, 750, 782, 670, 812, 821, 743, 743, - /* 250 */ 812, 782, 670, 917, 915, 782, 782, 670, 782, 670, - /* 260 */ 782, 670, 884, 741, 741, 741, 725, 884, 741, 710, - /* 270 */ 741, 725, 741, 741, 795, 790, 795, 790, 795, 790, - /* 280 */ 782, 782, 969, 884, 888, 888, 884, 807, 796, 805, - /* 290 */ 803, 812, 676, 728, 663, 663, 652, 652, 652, 652, - /* 300 */ 961, 961, 956, 712, 712, 695, 969, 969, 969, 969, - /* 310 */ 969, 969, 687, 969, 893, 969, 969, 969, 969, 969, - /* 320 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 330 */ 969, 828, 969, 648, 951, 969, 969, 948, 969, 969, - /* 340 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 350 */ 969, 969, 969, 969, 969, 969, 921, 969, 969, 969, - /* 360 */ 969, 969, 969, 914, 913, 969, 969, 969, 969, 969, - /* 370 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 380 */ 969, 969, 969, 969, 969, 969, 969, 757, 969, 969, - /* 390 */ 969, 761, 969, 969, 969, 969, 969, 969, 804, 969, - /* 400 */ 797, 969, 877, 969, 969, 969, 969, 969, 969, 969, - /* 410 */ 969, 969, 969, 966, 969, 969, 969, 965, 969, 969, - /* 420 */ 969, 969, 969, 830, 969, 829, 833, 969, 661, 969, - /* 430 */ 644, 649, 960, 963, 962, 959, 958, 957, 952, 950, - /* 440 */ 947, 946, 945, 943, 940, 936, 897, 895, 902, 901, - /* 450 */ 900, 899, 898, 896, 894, 892, 818, 817, 814, 811, - /* 460 */ 753, 935, 890, 752, 749, 748, 669, 953, 920, 929, - /* 470 */ 928, 927, 822, 926, 925, 924, 922, 919, 906, 820, - /* 480 */ 819, 744, 882, 881, 672, 910, 909, 908, 912, 916, - /* 490 */ 907, 784, 751, 671, 668, 675, 679, 731, 732, 740, - /* 500 */ 738, 737, 736, 735, 734, 730, 681, 686, 724, 709, - /* 510 */ 708, 717, 716, 722, 721, 720, 719, 718, 715, 714, - /* 520 */ 713, 706, 705, 711, 704, 727, 726, 723, 703, 747, - /* 530 */ 746, 745, 742, 702, 701, 700, 833, 699, 698, 838, - /* 540 */ 837, 866, 826, 755, 759, 758, 762, 763, 771, 770, - /* 550 */ 769, 780, 781, 793, 792, 824, 823, 794, 779, 773, - /* 560 */ 772, 788, 787, 786, 785, 777, 767, 799, 798, 868, - /* 570 */ 783, 867, 865, 934, 933, 932, 931, 930, 870, 967, - /* 580 */ 968, 887, 889, 886, 801, 800, 885, 869, 839, 836, - /* 590 */ 690, 691, 905, 904, 903, 693, 692, 689, 688, 863, - /* 600 */ 860, 852, 864, 861, 853, 849, 848, 834, 832, 831, - /* 610 */ 827, 835, 760, 756, 825, 765, 764, 697, 696, 694, - /* 620 */ 678, 677, 674, 667, 665, 664, 666, 662, 660, 659, - /* 630 */ 658, 657, 656, 684, 683, 682, 654, 651, 650, 646, - /* 640 */ 645, 643, + /* 0 */ 1281, 1271, 1271, 1271, 1203, 1203, 1203, 1203, 1271, 1096, + /* 10 */ 1125, 1125, 1255, 1332, 1332, 1332, 1332, 1332, 1332, 1202, + /* 20 */ 1332, 1332, 1332, 1332, 1271, 1100, 1131, 1332, 1332, 1332, + /* 30 */ 1332, 1204, 1205, 1332, 1332, 1332, 1254, 1256, 1141, 1140, + /* 40 */ 1139, 1138, 1237, 1112, 1136, 1129, 1133, 1204, 1198, 1199, + /* 50 */ 1197, 1201, 1205, 1332, 1132, 1167, 1182, 1166, 1332, 1332, + /* 60 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 70 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 80 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 90 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 100 */ 1332, 1332, 1332, 1332, 1176, 1181, 1188, 1180, 1177, 1169, + /* 110 */ 1168, 1170, 1171, 1332, 1019, 1067, 1332, 1332, 1332, 1172, + /* 120 */ 1332, 1173, 1185, 1184, 1183, 1262, 1289, 1288, 1332, 1332, + /* 130 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 140 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 150 */ 1332, 1332, 1332, 1332, 1332, 1281, 1271, 1025, 1025, 1332, + /* 160 */ 1271, 1271, 1271, 1271, 1271, 1271, 1267, 1100, 1091, 1332, + /* 170 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 180 */ 1259, 1257, 1332, 1218, 1332, 1332, 1332, 1332, 1332, 1332, + /* 190 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 200 */ 1332, 1332, 1332, 1332, 1096, 1332, 1332, 1332, 1332, 1332, + /* 210 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1283, 1332, 1232, + /* 220 */ 1096, 1096, 1096, 1098, 1080, 1090, 1004, 1135, 1114, 1114, + /* 230 */ 1321, 1135, 1321, 1042, 1303, 1039, 1125, 1114, 1200, 1125, + /* 240 */ 1125, 1097, 1090, 1332, 1324, 1105, 1105, 1323, 1323, 1105, + /* 250 */ 1146, 1070, 1135, 1076, 1076, 1076, 1076, 1105, 1016, 1135, + /* 260 */ 1146, 1070, 1070, 1135, 1105, 1016, 1236, 1318, 1105, 1105, + /* 270 */ 1016, 1211, 1105, 1016, 1105, 1016, 1211, 1068, 1068, 1068, + /* 280 */ 1057, 1211, 1068, 1042, 1068, 1057, 1068, 1068, 1118, 1113, + /* 290 */ 1118, 1113, 1118, 1113, 1118, 1113, 1105, 1206, 1105, 1332, + /* 300 */ 1211, 1215, 1215, 1211, 1130, 1119, 1128, 1126, 1135, 1022, + /* 310 */ 1060, 1286, 1286, 1282, 1282, 1282, 1282, 1329, 1329, 1267, + /* 320 */ 1298, 1298, 1044, 1044, 1298, 1332, 1332, 1332, 1332, 1332, + /* 330 */ 1332, 1293, 1332, 1220, 1332, 1332, 1332, 1332, 1332, 1332, + /* 340 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 350 */ 1332, 1332, 1152, 1332, 1000, 1264, 1332, 1332, 1263, 1332, + /* 360 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 370 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1320, + /* 380 */ 1332, 1332, 1332, 1332, 1332, 1332, 1235, 1234, 1332, 1332, + /* 390 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 400 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, + /* 410 */ 1332, 1082, 1332, 1332, 1332, 1307, 1332, 1332, 1332, 1332, + /* 420 */ 1332, 1332, 1332, 1127, 1332, 1120, 1332, 1332, 1311, 1332, + /* 430 */ 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1332, 1273, + /* 440 */ 1332, 1332, 1332, 1272, 1332, 1332, 1332, 1332, 1332, 1154, + /* 450 */ 1332, 1153, 1157, 1332, 1010, 1332, }; +/********** End of lemon-generated parsing tables *****************************/ -/* The next table maps tokens into fallback tokens. If a construct -** like the following: +/* The next table maps tokens (terminal symbols) into fallback tokens. +** If a construct like the following: ** ** %fallback ID X Y Z. ** @@ -115539,79 +135207,109 @@ static const YYACTIONTYPE yy_default[] = { ** and Z. Whenever one of the tokens X, Y, or Z is input to the parser ** but it does not parse, the type of the token is changed to ID and ** the parse is retried before an error is thrown. +** +** This feature can be used, for example, to cause some keywords in a language +** to revert to identifiers if they keyword does not apply in the context where +** it appears. */ #ifdef YYFALLBACK static const YYCODETYPE yyFallback[] = { 0, /* $ => nothing */ 0, /* SEMI => nothing */ - 27, /* EXPLAIN => ID */ - 27, /* QUERY => ID */ - 27, /* PLAN => ID */ - 27, /* BEGIN => ID */ + 55, /* EXPLAIN => ID */ + 55, /* QUERY => ID */ + 55, /* PLAN => ID */ + 55, /* BEGIN => ID */ 0, /* TRANSACTION => nothing */ - 27, /* DEFERRED => ID */ - 27, /* IMMEDIATE => ID */ - 27, /* EXCLUSIVE => ID */ + 55, /* DEFERRED => ID */ + 55, /* IMMEDIATE => ID */ + 55, /* EXCLUSIVE => ID */ 0, /* COMMIT => nothing */ - 27, /* END => ID */ - 27, /* ROLLBACK => ID */ - 27, /* SAVEPOINT => ID */ - 27, /* RELEASE => ID */ + 55, /* END => ID */ + 55, /* ROLLBACK => ID */ + 55, /* SAVEPOINT => ID */ + 55, /* RELEASE => ID */ 0, /* TO => nothing */ 0, /* TABLE => nothing */ 0, /* CREATE => nothing */ - 27, /* IF => ID */ + 55, /* IF => ID */ 0, /* NOT => nothing */ 0, /* EXISTS => nothing */ - 27, /* TEMP => ID */ + 55, /* TEMP => ID */ 0, /* LP => nothing */ 0, /* RP => nothing */ 0, /* AS => nothing */ - 27, /* WITHOUT => ID */ + 55, /* WITHOUT => ID */ 0, /* COMMA => nothing */ + 0, /* OR => nothing */ + 0, /* AND => nothing */ + 0, /* IS => nothing */ + 55, /* MATCH => ID */ + 55, /* LIKE_KW => ID */ + 0, /* BETWEEN => nothing */ + 0, /* IN => nothing */ + 0, /* ISNULL => nothing */ + 0, /* NOTNULL => nothing */ + 0, /* NE => nothing */ + 0, /* EQ => nothing */ + 0, /* GT => nothing */ + 0, /* LE => nothing */ + 0, /* LT => nothing */ + 0, /* GE => nothing */ + 0, /* ESCAPE => nothing */ + 0, /* BITAND => nothing */ + 0, /* BITOR => nothing */ + 0, /* LSHIFT => nothing */ + 0, /* RSHIFT => nothing */ + 0, /* PLUS => nothing */ + 0, /* MINUS => nothing */ + 0, /* STAR => nothing */ + 0, /* SLASH => nothing */ + 0, /* REM => nothing */ + 0, /* CONCAT => nothing */ + 0, /* COLLATE => nothing */ + 0, /* BITNOT => nothing */ 0, /* ID => nothing */ 0, /* INDEXED => nothing */ - 27, /* ABORT => ID */ - 27, /* ACTION => ID */ - 27, /* AFTER => ID */ - 27, /* ANALYZE => ID */ - 27, /* ASC => ID */ - 27, /* ATTACH => ID */ - 27, /* BEFORE => ID */ - 27, /* BY => ID */ - 27, /* CASCADE => ID */ - 27, /* CAST => ID */ - 27, /* COLUMNKW => ID */ - 27, /* CONFLICT => ID */ - 27, /* DATABASE => ID */ - 27, /* DESC => ID */ - 27, /* DETACH => ID */ - 27, /* EACH => ID */ - 27, /* FAIL => ID */ - 27, /* FOR => ID */ - 27, /* IGNORE => ID */ - 27, /* INITIALLY => ID */ - 27, /* INSTEAD => ID */ - 27, /* LIKE_KW => ID */ - 27, /* MATCH => ID */ - 27, /* NO => ID */ - 27, /* KEY => ID */ - 27, /* OF => ID */ - 27, /* OFFSET => ID */ - 27, /* PRAGMA => ID */ - 27, /* RAISE => ID */ - 27, /* RECURSIVE => ID */ - 27, /* REPLACE => ID */ - 27, /* RESTRICT => ID */ - 27, /* ROW => ID */ - 27, /* TRIGGER => ID */ - 27, /* VACUUM => ID */ - 27, /* VIEW => ID */ - 27, /* VIRTUAL => ID */ - 27, /* WITH => ID */ - 27, /* REINDEX => ID */ - 27, /* RENAME => ID */ - 27, /* CTIME_KW => ID */ + 55, /* ABORT => ID */ + 55, /* ACTION => ID */ + 55, /* AFTER => ID */ + 55, /* ANALYZE => ID */ + 55, /* ASC => ID */ + 55, /* ATTACH => ID */ + 55, /* BEFORE => ID */ + 55, /* BY => ID */ + 55, /* CASCADE => ID */ + 55, /* CAST => ID */ + 55, /* COLUMNKW => ID */ + 55, /* CONFLICT => ID */ + 55, /* DATABASE => ID */ + 55, /* DESC => ID */ + 55, /* DETACH => ID */ + 55, /* EACH => ID */ + 55, /* FAIL => ID */ + 55, /* FOR => ID */ + 55, /* IGNORE => ID */ + 55, /* INITIALLY => ID */ + 55, /* INSTEAD => ID */ + 55, /* NO => ID */ + 55, /* KEY => ID */ + 55, /* OF => ID */ + 55, /* OFFSET => ID */ + 55, /* PRAGMA => ID */ + 55, /* RAISE => ID */ + 55, /* RECURSIVE => ID */ + 55, /* REPLACE => ID */ + 55, /* RESTRICT => ID */ + 55, /* ROW => ID */ + 55, /* TRIGGER => ID */ + 55, /* VACUUM => ID */ + 55, /* VIEW => ID */ + 55, /* VIRTUAL => ID */ + 55, /* WITH => ID */ + 55, /* REINDEX => ID */ + 55, /* RENAME => ID */ + 55, /* CTIME_KW => ID */ }; #endif /* YYFALLBACK */ @@ -115626,9 +135324,13 @@ static const YYCODETYPE yyFallback[] = { ** + The semantic value stored at this level of the stack. This is ** the information used by the action routines in the grammar. ** It is sometimes called the "minor" token. +** +** After the "shift" half of a SHIFTREDUCE action, the stateno field +** actually contains the reduce action for the second half of the +** SHIFTREDUCE. */ struct yyStackEntry { - YYACTIONTYPE stateno; /* The state-number */ + YYACTIONTYPE stateno; /* The state-number, or reduce action in SHIFTREDUCE */ YYCODETYPE major; /* The major token value. This is the code ** number for the token at this stack level */ YYMINORTYPE minor; /* The user-supplied minor token value. This @@ -115639,15 +135341,18 @@ typedef struct yyStackEntry yyStackEntry; /* The state of the parser is completely contained in an instance of ** the following structure */ struct yyParser { - int yyidx; /* Index of top element in stack */ + yyStackEntry *yytos; /* Pointer to top element of the stack */ #ifdef YYTRACKMAXSTACKDEPTH - int yyidxMax; /* Maximum value of yyidx */ + int yyhwm; /* High-water mark of the stack */ #endif +#ifndef YYNOERRORRECOVERY int yyerrcnt; /* Shifts left before out of the error */ +#endif sqlite3ParserARG_SDECL /* A place to hold %extra_argument */ #if YYSTACKDEPTH<=0 int yystksz; /* Current side of the stack */ yyStackEntry *yystack; /* The parser's stack */ + yyStackEntry yystk0; /* First stack entry */ #else yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */ #endif @@ -115696,25 +135401,25 @@ static const char *const yyTokenName[] = { "ROLLBACK", "SAVEPOINT", "RELEASE", "TO", "TABLE", "CREATE", "IF", "NOT", "EXISTS", "TEMP", "LP", "RP", - "AS", "WITHOUT", "COMMA", "ID", + "AS", "WITHOUT", "COMMA", "OR", + "AND", "IS", "MATCH", "LIKE_KW", + "BETWEEN", "IN", "ISNULL", "NOTNULL", + "NE", "EQ", "GT", "LE", + "LT", "GE", "ESCAPE", "BITAND", + "BITOR", "LSHIFT", "RSHIFT", "PLUS", + "MINUS", "STAR", "SLASH", "REM", + "CONCAT", "COLLATE", "BITNOT", "ID", "INDEXED", "ABORT", "ACTION", "AFTER", "ANALYZE", "ASC", "ATTACH", "BEFORE", "BY", "CASCADE", "CAST", "COLUMNKW", "CONFLICT", "DATABASE", "DESC", "DETACH", "EACH", "FAIL", "FOR", "IGNORE", - "INITIALLY", "INSTEAD", "LIKE_KW", "MATCH", - "NO", "KEY", "OF", "OFFSET", - "PRAGMA", "RAISE", "RECURSIVE", "REPLACE", - "RESTRICT", "ROW", "TRIGGER", "VACUUM", - "VIEW", "VIRTUAL", "WITH", "REINDEX", - "RENAME", "CTIME_KW", "ANY", "OR", - "AND", "IS", "BETWEEN", "IN", - "ISNULL", "NOTNULL", "NE", "EQ", - "GT", "LE", "LT", "GE", - "ESCAPE", "BITAND", "BITOR", "LSHIFT", - "RSHIFT", "PLUS", "MINUS", "STAR", - "SLASH", "REM", "CONCAT", "COLLATE", - "BITNOT", "STRING", "JOIN_KW", "CONSTRAINT", + "INITIALLY", "INSTEAD", "NO", "KEY", + "OF", "OFFSET", "PRAGMA", "RAISE", + "RECURSIVE", "REPLACE", "RESTRICT", "ROW", + "TRIGGER", "VACUUM", "VIEW", "VIRTUAL", + "WITH", "REINDEX", "RENAME", "CTIME_KW", + "ANY", "STRING", "JOIN_KW", "CONSTRAINT", "DEFAULT", "NULL", "PRIMARY", "UNIQUE", "CHECK", "REFERENCES", "AUTOINCR", "ON", "INSERT", "DELETE", "UPDATE", "SET", @@ -115723,7 +135428,7 @@ static const char *const yyTokenName[] = { "VALUES", "DISTINCT", "DOT", "FROM", "JOIN", "USING", "ORDER", "GROUP", "HAVING", "LIMIT", "WHERE", "INTO", - "INTEGER", "FLOAT", "BLOB", "VARIABLE", + "FLOAT", "BLOB", "INTEGER", "VARIABLE", "CASE", "WHEN", "THEN", "ELSE", "INDEX", "ALTER", "ADD", "error", "input", "cmdlist", "ecmd", "explain", @@ -115731,29 +135436,28 @@ static const char *const yyTokenName[] = { "nm", "savepoint_opt", "create_table", "create_table_args", "createkw", "temp", "ifnotexists", "dbnm", "columnlist", "conslist_opt", "table_options", "select", - "column", "columnid", "type", "carglist", - "typetoken", "typename", "signed", "plus_num", - "minus_num", "ccons", "term", "expr", - "onconf", "sortorder", "autoinc", "idxlist_opt", - "refargs", "defer_subclause", "refarg", "refact", - "init_deferred_pred_opt", "conslist", "tconscomma", "tcons", - "idxlist", "defer_subclause_opt", "orconf", "resolvetype", - "raisetype", "ifexists", "fullname", "selectnowith", - "oneselect", "with", "multiselect_op", "distinct", - "selcollist", "from", "where_opt", "groupby_opt", - "having_opt", "orderby_opt", "limit_opt", "values", - "nexprlist", "exprlist", "sclp", "as", - "seltablist", "stl_prefix", "joinop", "indexed_opt", - "on_opt", "using_opt", "joinop2", "idlist", - "sortlist", "setlist", "insert_cmd", "inscollist_opt", - "likeop", "between_op", "in_op", "case_operand", - "case_exprlist", "case_else", "uniqueflag", "collate", - "nmnum", "trigger_decl", "trigger_cmd_list", "trigger_time", - "trigger_event", "foreach_clause", "when_clause", "trigger_cmd", - "trnm", "tridxby", "database_kw_opt", "key_opt", - "add_column_fullname", "kwcolumn_opt", "create_vtab", "vtabarglist", - "vtabarg", "vtabargtoken", "lp", "anylist", - "wqlist", + "columnname", "carglist", "typetoken", "typename", + "signed", "plus_num", "minus_num", "ccons", + "term", "expr", "onconf", "sortorder", + "autoinc", "eidlist_opt", "refargs", "defer_subclause", + "refarg", "refact", "init_deferred_pred_opt", "conslist", + "tconscomma", "tcons", "sortlist", "eidlist", + "defer_subclause_opt", "orconf", "resolvetype", "raisetype", + "ifexists", "fullname", "selectnowith", "oneselect", + "with", "multiselect_op", "distinct", "selcollist", + "from", "where_opt", "groupby_opt", "having_opt", + "orderby_opt", "limit_opt", "values", "nexprlist", + "exprlist", "sclp", "as", "seltablist", + "stl_prefix", "joinop", "indexed_opt", "on_opt", + "using_opt", "idlist", "setlist", "insert_cmd", + "idlist_opt", "likeop", "between_op", "in_op", + "paren_exprlist", "case_operand", "case_exprlist", "case_else", + "uniqueflag", "collate", "nmnum", "trigger_decl", + "trigger_cmd_list", "trigger_time", "trigger_event", "foreach_clause", + "when_clause", "trigger_cmd", "trnm", "tridxby", + "database_kw_opt", "key_opt", "add_column_fullname", "kwcolumn_opt", + "create_vtab", "vtabarglist", "vtabarg", "vtabargtoken", + "lp", "anylist", "wqlist", }; #endif /* NDEBUG */ @@ -115761,360 +135465,409 @@ static const char *const yyTokenName[] = { /* For tracing reduce actions, the names of all rules are required. */ static const char *const yyRuleName[] = { - /* 0 */ "input ::= cmdlist", - /* 1 */ "cmdlist ::= cmdlist ecmd", - /* 2 */ "cmdlist ::= ecmd", - /* 3 */ "ecmd ::= SEMI", - /* 4 */ "ecmd ::= explain cmdx SEMI", - /* 5 */ "explain ::=", - /* 6 */ "explain ::= EXPLAIN", - /* 7 */ "explain ::= EXPLAIN QUERY PLAN", - /* 8 */ "cmdx ::= cmd", - /* 9 */ "cmd ::= BEGIN transtype trans_opt", - /* 10 */ "trans_opt ::=", - /* 11 */ "trans_opt ::= TRANSACTION", - /* 12 */ "trans_opt ::= TRANSACTION nm", - /* 13 */ "transtype ::=", - /* 14 */ "transtype ::= DEFERRED", - /* 15 */ "transtype ::= IMMEDIATE", - /* 16 */ "transtype ::= EXCLUSIVE", - /* 17 */ "cmd ::= COMMIT trans_opt", - /* 18 */ "cmd ::= END trans_opt", - /* 19 */ "cmd ::= ROLLBACK trans_opt", - /* 20 */ "savepoint_opt ::= SAVEPOINT", - /* 21 */ "savepoint_opt ::=", - /* 22 */ "cmd ::= SAVEPOINT nm", - /* 23 */ "cmd ::= RELEASE savepoint_opt nm", - /* 24 */ "cmd ::= ROLLBACK trans_opt TO savepoint_opt nm", - /* 25 */ "cmd ::= create_table create_table_args", - /* 26 */ "create_table ::= createkw temp TABLE ifnotexists nm dbnm", - /* 27 */ "createkw ::= CREATE", - /* 28 */ "ifnotexists ::=", - /* 29 */ "ifnotexists ::= IF NOT EXISTS", - /* 30 */ "temp ::= TEMP", - /* 31 */ "temp ::=", - /* 32 */ "create_table_args ::= LP columnlist conslist_opt RP table_options", - /* 33 */ "create_table_args ::= AS select", - /* 34 */ "table_options ::=", - /* 35 */ "table_options ::= WITHOUT nm", - /* 36 */ "columnlist ::= columnlist COMMA column", - /* 37 */ "columnlist ::= column", - /* 38 */ "column ::= columnid type carglist", - /* 39 */ "columnid ::= nm", - /* 40 */ "nm ::= ID|INDEXED", - /* 41 */ "nm ::= STRING", - /* 42 */ "nm ::= JOIN_KW", - /* 43 */ "type ::=", - /* 44 */ "type ::= typetoken", - /* 45 */ "typetoken ::= typename", - /* 46 */ "typetoken ::= typename LP signed RP", - /* 47 */ "typetoken ::= typename LP signed COMMA signed RP", - /* 48 */ "typename ::= ID|STRING", - /* 49 */ "typename ::= typename ID|STRING", - /* 50 */ "signed ::= plus_num", - /* 51 */ "signed ::= minus_num", - /* 52 */ "carglist ::= carglist ccons", - /* 53 */ "carglist ::=", - /* 54 */ "ccons ::= CONSTRAINT nm", - /* 55 */ "ccons ::= DEFAULT term", - /* 56 */ "ccons ::= DEFAULT LP expr RP", - /* 57 */ "ccons ::= DEFAULT PLUS term", - /* 58 */ "ccons ::= DEFAULT MINUS term", - /* 59 */ "ccons ::= DEFAULT ID|INDEXED", - /* 60 */ "ccons ::= NULL onconf", - /* 61 */ "ccons ::= NOT NULL onconf", - /* 62 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc", - /* 63 */ "ccons ::= UNIQUE onconf", - /* 64 */ "ccons ::= CHECK LP expr RP", - /* 65 */ "ccons ::= REFERENCES nm idxlist_opt refargs", - /* 66 */ "ccons ::= defer_subclause", - /* 67 */ "ccons ::= COLLATE ID|STRING", - /* 68 */ "autoinc ::=", - /* 69 */ "autoinc ::= AUTOINCR", - /* 70 */ "refargs ::=", - /* 71 */ "refargs ::= refargs refarg", - /* 72 */ "refarg ::= MATCH nm", - /* 73 */ "refarg ::= ON INSERT refact", - /* 74 */ "refarg ::= ON DELETE refact", - /* 75 */ "refarg ::= ON UPDATE refact", - /* 76 */ "refact ::= SET NULL", - /* 77 */ "refact ::= SET DEFAULT", - /* 78 */ "refact ::= CASCADE", - /* 79 */ "refact ::= RESTRICT", - /* 80 */ "refact ::= NO ACTION", - /* 81 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt", - /* 82 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt", - /* 83 */ "init_deferred_pred_opt ::=", - /* 84 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED", - /* 85 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE", - /* 86 */ "conslist_opt ::=", - /* 87 */ "conslist_opt ::= COMMA conslist", - /* 88 */ "conslist ::= conslist tconscomma tcons", - /* 89 */ "conslist ::= tcons", - /* 90 */ "tconscomma ::= COMMA", - /* 91 */ "tconscomma ::=", - /* 92 */ "tcons ::= CONSTRAINT nm", - /* 93 */ "tcons ::= PRIMARY KEY LP idxlist autoinc RP onconf", - /* 94 */ "tcons ::= UNIQUE LP idxlist RP onconf", - /* 95 */ "tcons ::= CHECK LP expr RP onconf", - /* 96 */ "tcons ::= FOREIGN KEY LP idxlist RP REFERENCES nm idxlist_opt refargs defer_subclause_opt", - /* 97 */ "defer_subclause_opt ::=", - /* 98 */ "defer_subclause_opt ::= defer_subclause", - /* 99 */ "onconf ::=", - /* 100 */ "onconf ::= ON CONFLICT resolvetype", - /* 101 */ "orconf ::=", - /* 102 */ "orconf ::= OR resolvetype", - /* 103 */ "resolvetype ::= raisetype", - /* 104 */ "resolvetype ::= IGNORE", - /* 105 */ "resolvetype ::= REPLACE", - /* 106 */ "cmd ::= DROP TABLE ifexists fullname", - /* 107 */ "ifexists ::= IF EXISTS", - /* 108 */ "ifexists ::=", - /* 109 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm AS select", - /* 110 */ "cmd ::= DROP VIEW ifexists fullname", - /* 111 */ "cmd ::= select", - /* 112 */ "select ::= with selectnowith", - /* 113 */ "selectnowith ::= oneselect", - /* 114 */ "selectnowith ::= selectnowith multiselect_op oneselect", - /* 115 */ "multiselect_op ::= UNION", - /* 116 */ "multiselect_op ::= UNION ALL", - /* 117 */ "multiselect_op ::= EXCEPT|INTERSECT", - /* 118 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt", - /* 119 */ "oneselect ::= values", - /* 120 */ "values ::= VALUES LP nexprlist RP", - /* 121 */ "values ::= values COMMA LP exprlist RP", - /* 122 */ "distinct ::= DISTINCT", - /* 123 */ "distinct ::= ALL", - /* 124 */ "distinct ::=", - /* 125 */ "sclp ::= selcollist COMMA", - /* 126 */ "sclp ::=", - /* 127 */ "selcollist ::= sclp expr as", - /* 128 */ "selcollist ::= sclp STAR", - /* 129 */ "selcollist ::= sclp nm DOT STAR", - /* 130 */ "as ::= AS nm", - /* 131 */ "as ::= ID|STRING", - /* 132 */ "as ::=", - /* 133 */ "from ::=", - /* 134 */ "from ::= FROM seltablist", - /* 135 */ "stl_prefix ::= seltablist joinop", - /* 136 */ "stl_prefix ::=", - /* 137 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt", - /* 138 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt", - /* 139 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt", - /* 140 */ "dbnm ::=", - /* 141 */ "dbnm ::= DOT nm", - /* 142 */ "fullname ::= nm dbnm", - /* 143 */ "joinop ::= COMMA|JOIN", - /* 144 */ "joinop ::= JOIN_KW JOIN", - /* 145 */ "joinop ::= JOIN_KW nm JOIN", - /* 146 */ "joinop ::= JOIN_KW nm nm JOIN", - /* 147 */ "on_opt ::= ON expr", - /* 148 */ "on_opt ::=", - /* 149 */ "indexed_opt ::=", - /* 150 */ "indexed_opt ::= INDEXED BY nm", - /* 151 */ "indexed_opt ::= NOT INDEXED", - /* 152 */ "using_opt ::= USING LP idlist RP", - /* 153 */ "using_opt ::=", - /* 154 */ "orderby_opt ::=", - /* 155 */ "orderby_opt ::= ORDER BY sortlist", - /* 156 */ "sortlist ::= sortlist COMMA expr sortorder", - /* 157 */ "sortlist ::= expr sortorder", - /* 158 */ "sortorder ::= ASC", - /* 159 */ "sortorder ::= DESC", - /* 160 */ "sortorder ::=", - /* 161 */ "groupby_opt ::=", - /* 162 */ "groupby_opt ::= GROUP BY nexprlist", - /* 163 */ "having_opt ::=", - /* 164 */ "having_opt ::= HAVING expr", - /* 165 */ "limit_opt ::=", - /* 166 */ "limit_opt ::= LIMIT expr", - /* 167 */ "limit_opt ::= LIMIT expr OFFSET expr", - /* 168 */ "limit_opt ::= LIMIT expr COMMA expr", - /* 169 */ "cmd ::= with DELETE FROM fullname indexed_opt where_opt", - /* 170 */ "where_opt ::=", - /* 171 */ "where_opt ::= WHERE expr", - /* 172 */ "cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt", - /* 173 */ "setlist ::= setlist COMMA nm EQ expr", - /* 174 */ "setlist ::= nm EQ expr", - /* 175 */ "cmd ::= with insert_cmd INTO fullname inscollist_opt select", - /* 176 */ "cmd ::= with insert_cmd INTO fullname inscollist_opt DEFAULT VALUES", - /* 177 */ "insert_cmd ::= INSERT orconf", - /* 178 */ "insert_cmd ::= REPLACE", - /* 179 */ "inscollist_opt ::=", - /* 180 */ "inscollist_opt ::= LP idlist RP", - /* 181 */ "idlist ::= idlist COMMA nm", - /* 182 */ "idlist ::= nm", - /* 183 */ "expr ::= term", - /* 184 */ "expr ::= LP expr RP", - /* 185 */ "term ::= NULL", - /* 186 */ "expr ::= ID|INDEXED", - /* 187 */ "expr ::= JOIN_KW", - /* 188 */ "expr ::= nm DOT nm", - /* 189 */ "expr ::= nm DOT nm DOT nm", - /* 190 */ "term ::= INTEGER|FLOAT|BLOB", - /* 191 */ "term ::= STRING", - /* 192 */ "expr ::= VARIABLE", - /* 193 */ "expr ::= expr COLLATE ID|STRING", - /* 194 */ "expr ::= CAST LP expr AS typetoken RP", - /* 195 */ "expr ::= ID|INDEXED LP distinct exprlist RP", - /* 196 */ "expr ::= ID|INDEXED LP STAR RP", - /* 197 */ "term ::= CTIME_KW", - /* 198 */ "expr ::= expr AND expr", - /* 199 */ "expr ::= expr OR expr", - /* 200 */ "expr ::= expr LT|GT|GE|LE expr", - /* 201 */ "expr ::= expr EQ|NE expr", - /* 202 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", - /* 203 */ "expr ::= expr PLUS|MINUS expr", - /* 204 */ "expr ::= expr STAR|SLASH|REM expr", - /* 205 */ "expr ::= expr CONCAT expr", - /* 206 */ "likeop ::= LIKE_KW|MATCH", - /* 207 */ "likeop ::= NOT LIKE_KW|MATCH", - /* 208 */ "expr ::= expr likeop expr", - /* 209 */ "expr ::= expr likeop expr ESCAPE expr", - /* 210 */ "expr ::= expr ISNULL|NOTNULL", - /* 211 */ "expr ::= expr NOT NULL", - /* 212 */ "expr ::= expr IS expr", - /* 213 */ "expr ::= expr IS NOT expr", - /* 214 */ "expr ::= NOT expr", - /* 215 */ "expr ::= BITNOT expr", - /* 216 */ "expr ::= MINUS expr", - /* 217 */ "expr ::= PLUS expr", - /* 218 */ "between_op ::= BETWEEN", - /* 219 */ "between_op ::= NOT BETWEEN", - /* 220 */ "expr ::= expr between_op expr AND expr", - /* 221 */ "in_op ::= IN", - /* 222 */ "in_op ::= NOT IN", - /* 223 */ "expr ::= expr in_op LP exprlist RP", - /* 224 */ "expr ::= LP select RP", - /* 225 */ "expr ::= expr in_op LP select RP", - /* 226 */ "expr ::= expr in_op nm dbnm", - /* 227 */ "expr ::= EXISTS LP select RP", - /* 228 */ "expr ::= CASE case_operand case_exprlist case_else END", - /* 229 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", - /* 230 */ "case_exprlist ::= WHEN expr THEN expr", - /* 231 */ "case_else ::= ELSE expr", - /* 232 */ "case_else ::=", - /* 233 */ "case_operand ::= expr", - /* 234 */ "case_operand ::=", - /* 235 */ "exprlist ::= nexprlist", - /* 236 */ "exprlist ::=", - /* 237 */ "nexprlist ::= nexprlist COMMA expr", - /* 238 */ "nexprlist ::= expr", - /* 239 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP idxlist RP where_opt", - /* 240 */ "uniqueflag ::= UNIQUE", - /* 241 */ "uniqueflag ::=", - /* 242 */ "idxlist_opt ::=", - /* 243 */ "idxlist_opt ::= LP idxlist RP", - /* 244 */ "idxlist ::= idxlist COMMA nm collate sortorder", - /* 245 */ "idxlist ::= nm collate sortorder", - /* 246 */ "collate ::=", - /* 247 */ "collate ::= COLLATE ID|STRING", - /* 248 */ "cmd ::= DROP INDEX ifexists fullname", - /* 249 */ "cmd ::= VACUUM", - /* 250 */ "cmd ::= VACUUM nm", - /* 251 */ "cmd ::= PRAGMA nm dbnm", - /* 252 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", - /* 253 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", - /* 254 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", - /* 255 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", - /* 256 */ "nmnum ::= plus_num", - /* 257 */ "nmnum ::= nm", - /* 258 */ "nmnum ::= ON", - /* 259 */ "nmnum ::= DELETE", - /* 260 */ "nmnum ::= DEFAULT", - /* 261 */ "plus_num ::= PLUS INTEGER|FLOAT", - /* 262 */ "plus_num ::= INTEGER|FLOAT", - /* 263 */ "minus_num ::= MINUS INTEGER|FLOAT", - /* 264 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", - /* 265 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", - /* 266 */ "trigger_time ::= BEFORE", - /* 267 */ "trigger_time ::= AFTER", - /* 268 */ "trigger_time ::= INSTEAD OF", - /* 269 */ "trigger_time ::=", - /* 270 */ "trigger_event ::= DELETE|INSERT", - /* 271 */ "trigger_event ::= UPDATE", - /* 272 */ "trigger_event ::= UPDATE OF idlist", - /* 273 */ "foreach_clause ::=", - /* 274 */ "foreach_clause ::= FOR EACH ROW", - /* 275 */ "when_clause ::=", - /* 276 */ "when_clause ::= WHEN expr", - /* 277 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", - /* 278 */ "trigger_cmd_list ::= trigger_cmd SEMI", - /* 279 */ "trnm ::= nm", - /* 280 */ "trnm ::= nm DOT nm", - /* 281 */ "tridxby ::=", - /* 282 */ "tridxby ::= INDEXED BY nm", - /* 283 */ "tridxby ::= NOT INDEXED", - /* 284 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt", - /* 285 */ "trigger_cmd ::= insert_cmd INTO trnm inscollist_opt select", - /* 286 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt", - /* 287 */ "trigger_cmd ::= select", - /* 288 */ "expr ::= RAISE LP IGNORE RP", - /* 289 */ "expr ::= RAISE LP raisetype COMMA nm RP", - /* 290 */ "raisetype ::= ROLLBACK", - /* 291 */ "raisetype ::= ABORT", - /* 292 */ "raisetype ::= FAIL", - /* 293 */ "cmd ::= DROP TRIGGER ifexists fullname", - /* 294 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", - /* 295 */ "cmd ::= DETACH database_kw_opt expr", - /* 296 */ "key_opt ::=", - /* 297 */ "key_opt ::= KEY expr", - /* 298 */ "database_kw_opt ::= DATABASE", - /* 299 */ "database_kw_opt ::=", - /* 300 */ "cmd ::= REINDEX", - /* 301 */ "cmd ::= REINDEX nm dbnm", - /* 302 */ "cmd ::= ANALYZE", - /* 303 */ "cmd ::= ANALYZE nm dbnm", - /* 304 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", - /* 305 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column", - /* 306 */ "add_column_fullname ::= fullname", - /* 307 */ "kwcolumn_opt ::=", - /* 308 */ "kwcolumn_opt ::= COLUMNKW", - /* 309 */ "cmd ::= create_vtab", - /* 310 */ "cmd ::= create_vtab LP vtabarglist RP", - /* 311 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", - /* 312 */ "vtabarglist ::= vtabarg", - /* 313 */ "vtabarglist ::= vtabarglist COMMA vtabarg", - /* 314 */ "vtabarg ::=", - /* 315 */ "vtabarg ::= vtabarg vtabargtoken", - /* 316 */ "vtabargtoken ::= ANY", - /* 317 */ "vtabargtoken ::= lp anylist RP", - /* 318 */ "lp ::= LP", - /* 319 */ "anylist ::=", - /* 320 */ "anylist ::= anylist LP anylist RP", - /* 321 */ "anylist ::= anylist ANY", - /* 322 */ "with ::=", - /* 323 */ "with ::= WITH wqlist", - /* 324 */ "with ::= WITH RECURSIVE wqlist", - /* 325 */ "wqlist ::= nm idxlist_opt AS LP select RP", - /* 326 */ "wqlist ::= wqlist COMMA nm idxlist_opt AS LP select RP", + /* 0 */ "explain ::= EXPLAIN", + /* 1 */ "explain ::= EXPLAIN QUERY PLAN", + /* 2 */ "cmdx ::= cmd", + /* 3 */ "cmd ::= BEGIN transtype trans_opt", + /* 4 */ "transtype ::=", + /* 5 */ "transtype ::= DEFERRED", + /* 6 */ "transtype ::= IMMEDIATE", + /* 7 */ "transtype ::= EXCLUSIVE", + /* 8 */ "cmd ::= COMMIT trans_opt", + /* 9 */ "cmd ::= END trans_opt", + /* 10 */ "cmd ::= ROLLBACK trans_opt", + /* 11 */ "cmd ::= SAVEPOINT nm", + /* 12 */ "cmd ::= RELEASE savepoint_opt nm", + /* 13 */ "cmd ::= ROLLBACK trans_opt TO savepoint_opt nm", + /* 14 */ "create_table ::= createkw temp TABLE ifnotexists nm dbnm", + /* 15 */ "createkw ::= CREATE", + /* 16 */ "ifnotexists ::=", + /* 17 */ "ifnotexists ::= IF NOT EXISTS", + /* 18 */ "temp ::= TEMP", + /* 19 */ "temp ::=", + /* 20 */ "create_table_args ::= LP columnlist conslist_opt RP table_options", + /* 21 */ "create_table_args ::= AS select", + /* 22 */ "table_options ::=", + /* 23 */ "table_options ::= WITHOUT nm", + /* 24 */ "columnname ::= nm typetoken", + /* 25 */ "typetoken ::=", + /* 26 */ "typetoken ::= typename LP signed RP", + /* 27 */ "typetoken ::= typename LP signed COMMA signed RP", + /* 28 */ "typename ::= typename ID|STRING", + /* 29 */ "ccons ::= CONSTRAINT nm", + /* 30 */ "ccons ::= DEFAULT term", + /* 31 */ "ccons ::= DEFAULT LP expr RP", + /* 32 */ "ccons ::= DEFAULT PLUS term", + /* 33 */ "ccons ::= DEFAULT MINUS term", + /* 34 */ "ccons ::= DEFAULT ID|INDEXED", + /* 35 */ "ccons ::= NOT NULL onconf", + /* 36 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc", + /* 37 */ "ccons ::= UNIQUE onconf", + /* 38 */ "ccons ::= CHECK LP expr RP", + /* 39 */ "ccons ::= REFERENCES nm eidlist_opt refargs", + /* 40 */ "ccons ::= defer_subclause", + /* 41 */ "ccons ::= COLLATE ID|STRING", + /* 42 */ "autoinc ::=", + /* 43 */ "autoinc ::= AUTOINCR", + /* 44 */ "refargs ::=", + /* 45 */ "refargs ::= refargs refarg", + /* 46 */ "refarg ::= MATCH nm", + /* 47 */ "refarg ::= ON INSERT refact", + /* 48 */ "refarg ::= ON DELETE refact", + /* 49 */ "refarg ::= ON UPDATE refact", + /* 50 */ "refact ::= SET NULL", + /* 51 */ "refact ::= SET DEFAULT", + /* 52 */ "refact ::= CASCADE", + /* 53 */ "refact ::= RESTRICT", + /* 54 */ "refact ::= NO ACTION", + /* 55 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt", + /* 56 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt", + /* 57 */ "init_deferred_pred_opt ::=", + /* 58 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED", + /* 59 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE", + /* 60 */ "conslist_opt ::=", + /* 61 */ "tconscomma ::= COMMA", + /* 62 */ "tcons ::= CONSTRAINT nm", + /* 63 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf", + /* 64 */ "tcons ::= UNIQUE LP sortlist RP onconf", + /* 65 */ "tcons ::= CHECK LP expr RP onconf", + /* 66 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt", + /* 67 */ "defer_subclause_opt ::=", + /* 68 */ "onconf ::=", + /* 69 */ "onconf ::= ON CONFLICT resolvetype", + /* 70 */ "orconf ::=", + /* 71 */ "orconf ::= OR resolvetype", + /* 72 */ "resolvetype ::= IGNORE", + /* 73 */ "resolvetype ::= REPLACE", + /* 74 */ "cmd ::= DROP TABLE ifexists fullname", + /* 75 */ "ifexists ::= IF EXISTS", + /* 76 */ "ifexists ::=", + /* 77 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select", + /* 78 */ "cmd ::= DROP VIEW ifexists fullname", + /* 79 */ "cmd ::= select", + /* 80 */ "select ::= with selectnowith", + /* 81 */ "selectnowith ::= selectnowith multiselect_op oneselect", + /* 82 */ "multiselect_op ::= UNION", + /* 83 */ "multiselect_op ::= UNION ALL", + /* 84 */ "multiselect_op ::= EXCEPT|INTERSECT", + /* 85 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt", + /* 86 */ "values ::= VALUES LP nexprlist RP", + /* 87 */ "values ::= values COMMA LP exprlist RP", + /* 88 */ "distinct ::= DISTINCT", + /* 89 */ "distinct ::= ALL", + /* 90 */ "distinct ::=", + /* 91 */ "sclp ::=", + /* 92 */ "selcollist ::= sclp expr as", + /* 93 */ "selcollist ::= sclp STAR", + /* 94 */ "selcollist ::= sclp nm DOT STAR", + /* 95 */ "as ::= AS nm", + /* 96 */ "as ::=", + /* 97 */ "from ::=", + /* 98 */ "from ::= FROM seltablist", + /* 99 */ "stl_prefix ::= seltablist joinop", + /* 100 */ "stl_prefix ::=", + /* 101 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt", + /* 102 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt", + /* 103 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt", + /* 104 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt", + /* 105 */ "dbnm ::=", + /* 106 */ "dbnm ::= DOT nm", + /* 107 */ "fullname ::= nm dbnm", + /* 108 */ "joinop ::= COMMA|JOIN", + /* 109 */ "joinop ::= JOIN_KW JOIN", + /* 110 */ "joinop ::= JOIN_KW nm JOIN", + /* 111 */ "joinop ::= JOIN_KW nm nm JOIN", + /* 112 */ "on_opt ::= ON expr", + /* 113 */ "on_opt ::=", + /* 114 */ "indexed_opt ::=", + /* 115 */ "indexed_opt ::= INDEXED BY nm", + /* 116 */ "indexed_opt ::= NOT INDEXED", + /* 117 */ "using_opt ::= USING LP idlist RP", + /* 118 */ "using_opt ::=", + /* 119 */ "orderby_opt ::=", + /* 120 */ "orderby_opt ::= ORDER BY sortlist", + /* 121 */ "sortlist ::= sortlist COMMA expr sortorder", + /* 122 */ "sortlist ::= expr sortorder", + /* 123 */ "sortorder ::= ASC", + /* 124 */ "sortorder ::= DESC", + /* 125 */ "sortorder ::=", + /* 126 */ "groupby_opt ::=", + /* 127 */ "groupby_opt ::= GROUP BY nexprlist", + /* 128 */ "having_opt ::=", + /* 129 */ "having_opt ::= HAVING expr", + /* 130 */ "limit_opt ::=", + /* 131 */ "limit_opt ::= LIMIT expr", + /* 132 */ "limit_opt ::= LIMIT expr OFFSET expr", + /* 133 */ "limit_opt ::= LIMIT expr COMMA expr", + /* 134 */ "cmd ::= with DELETE FROM fullname indexed_opt where_opt", + /* 135 */ "where_opt ::=", + /* 136 */ "where_opt ::= WHERE expr", + /* 137 */ "cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt", + /* 138 */ "setlist ::= setlist COMMA nm EQ expr", + /* 139 */ "setlist ::= setlist COMMA LP idlist RP EQ expr", + /* 140 */ "setlist ::= nm EQ expr", + /* 141 */ "setlist ::= LP idlist RP EQ expr", + /* 142 */ "cmd ::= with insert_cmd INTO fullname idlist_opt select", + /* 143 */ "cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES", + /* 144 */ "insert_cmd ::= INSERT orconf", + /* 145 */ "insert_cmd ::= REPLACE", + /* 146 */ "idlist_opt ::=", + /* 147 */ "idlist_opt ::= LP idlist RP", + /* 148 */ "idlist ::= idlist COMMA nm", + /* 149 */ "idlist ::= nm", + /* 150 */ "expr ::= LP expr RP", + /* 151 */ "term ::= NULL", + /* 152 */ "expr ::= ID|INDEXED", + /* 153 */ "expr ::= JOIN_KW", + /* 154 */ "expr ::= nm DOT nm", + /* 155 */ "expr ::= nm DOT nm DOT nm", + /* 156 */ "term ::= FLOAT|BLOB", + /* 157 */ "term ::= STRING", + /* 158 */ "term ::= INTEGER", + /* 159 */ "expr ::= VARIABLE", + /* 160 */ "expr ::= expr COLLATE ID|STRING", + /* 161 */ "expr ::= CAST LP expr AS typetoken RP", + /* 162 */ "expr ::= ID|INDEXED LP distinct exprlist RP", + /* 163 */ "expr ::= ID|INDEXED LP STAR RP", + /* 164 */ "term ::= CTIME_KW", + /* 165 */ "expr ::= LP nexprlist COMMA expr RP", + /* 166 */ "expr ::= expr AND expr", + /* 167 */ "expr ::= expr OR expr", + /* 168 */ "expr ::= expr LT|GT|GE|LE expr", + /* 169 */ "expr ::= expr EQ|NE expr", + /* 170 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", + /* 171 */ "expr ::= expr PLUS|MINUS expr", + /* 172 */ "expr ::= expr STAR|SLASH|REM expr", + /* 173 */ "expr ::= expr CONCAT expr", + /* 174 */ "likeop ::= LIKE_KW|MATCH", + /* 175 */ "likeop ::= NOT LIKE_KW|MATCH", + /* 176 */ "expr ::= expr likeop expr", + /* 177 */ "expr ::= expr likeop expr ESCAPE expr", + /* 178 */ "expr ::= expr ISNULL|NOTNULL", + /* 179 */ "expr ::= expr NOT NULL", + /* 180 */ "expr ::= expr IS expr", + /* 181 */ "expr ::= expr IS NOT expr", + /* 182 */ "expr ::= NOT expr", + /* 183 */ "expr ::= BITNOT expr", + /* 184 */ "expr ::= MINUS expr", + /* 185 */ "expr ::= PLUS expr", + /* 186 */ "between_op ::= BETWEEN", + /* 187 */ "between_op ::= NOT BETWEEN", + /* 188 */ "expr ::= expr between_op expr AND expr", + /* 189 */ "in_op ::= IN", + /* 190 */ "in_op ::= NOT IN", + /* 191 */ "expr ::= expr in_op LP exprlist RP", + /* 192 */ "expr ::= LP select RP", + /* 193 */ "expr ::= expr in_op LP select RP", + /* 194 */ "expr ::= expr in_op nm dbnm paren_exprlist", + /* 195 */ "expr ::= EXISTS LP select RP", + /* 196 */ "expr ::= CASE case_operand case_exprlist case_else END", + /* 197 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", + /* 198 */ "case_exprlist ::= WHEN expr THEN expr", + /* 199 */ "case_else ::= ELSE expr", + /* 200 */ "case_else ::=", + /* 201 */ "case_operand ::= expr", + /* 202 */ "case_operand ::=", + /* 203 */ "exprlist ::=", + /* 204 */ "nexprlist ::= nexprlist COMMA expr", + /* 205 */ "nexprlist ::= expr", + /* 206 */ "paren_exprlist ::=", + /* 207 */ "paren_exprlist ::= LP exprlist RP", + /* 208 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt", + /* 209 */ "uniqueflag ::= UNIQUE", + /* 210 */ "uniqueflag ::=", + /* 211 */ "eidlist_opt ::=", + /* 212 */ "eidlist_opt ::= LP eidlist RP", + /* 213 */ "eidlist ::= eidlist COMMA nm collate sortorder", + /* 214 */ "eidlist ::= nm collate sortorder", + /* 215 */ "collate ::=", + /* 216 */ "collate ::= COLLATE ID|STRING", + /* 217 */ "cmd ::= DROP INDEX ifexists fullname", + /* 218 */ "cmd ::= VACUUM", + /* 219 */ "cmd ::= VACUUM nm", + /* 220 */ "cmd ::= PRAGMA nm dbnm", + /* 221 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", + /* 222 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", + /* 223 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", + /* 224 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", + /* 225 */ "plus_num ::= PLUS INTEGER|FLOAT", + /* 226 */ "minus_num ::= MINUS INTEGER|FLOAT", + /* 227 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", + /* 228 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", + /* 229 */ "trigger_time ::= BEFORE", + /* 230 */ "trigger_time ::= AFTER", + /* 231 */ "trigger_time ::= INSTEAD OF", + /* 232 */ "trigger_time ::=", + /* 233 */ "trigger_event ::= DELETE|INSERT", + /* 234 */ "trigger_event ::= UPDATE", + /* 235 */ "trigger_event ::= UPDATE OF idlist", + /* 236 */ "when_clause ::=", + /* 237 */ "when_clause ::= WHEN expr", + /* 238 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", + /* 239 */ "trigger_cmd_list ::= trigger_cmd SEMI", + /* 240 */ "trnm ::= nm DOT nm", + /* 241 */ "tridxby ::= INDEXED BY nm", + /* 242 */ "tridxby ::= NOT INDEXED", + /* 243 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt", + /* 244 */ "trigger_cmd ::= insert_cmd INTO trnm idlist_opt select", + /* 245 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt", + /* 246 */ "trigger_cmd ::= select", + /* 247 */ "expr ::= RAISE LP IGNORE RP", + /* 248 */ "expr ::= RAISE LP raisetype COMMA nm RP", + /* 249 */ "raisetype ::= ROLLBACK", + /* 250 */ "raisetype ::= ABORT", + /* 251 */ "raisetype ::= FAIL", + /* 252 */ "cmd ::= DROP TRIGGER ifexists fullname", + /* 253 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", + /* 254 */ "cmd ::= DETACH database_kw_opt expr", + /* 255 */ "key_opt ::=", + /* 256 */ "key_opt ::= KEY expr", + /* 257 */ "cmd ::= REINDEX", + /* 258 */ "cmd ::= REINDEX nm dbnm", + /* 259 */ "cmd ::= ANALYZE", + /* 260 */ "cmd ::= ANALYZE nm dbnm", + /* 261 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", + /* 262 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist", + /* 263 */ "add_column_fullname ::= fullname", + /* 264 */ "cmd ::= create_vtab", + /* 265 */ "cmd ::= create_vtab LP vtabarglist RP", + /* 266 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", + /* 267 */ "vtabarg ::=", + /* 268 */ "vtabargtoken ::= ANY", + /* 269 */ "vtabargtoken ::= lp anylist RP", + /* 270 */ "lp ::= LP", + /* 271 */ "with ::=", + /* 272 */ "with ::= WITH wqlist", + /* 273 */ "with ::= WITH RECURSIVE wqlist", + /* 274 */ "wqlist ::= nm eidlist_opt AS LP select RP", + /* 275 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP", + /* 276 */ "input ::= cmdlist", + /* 277 */ "cmdlist ::= cmdlist ecmd", + /* 278 */ "cmdlist ::= ecmd", + /* 279 */ "ecmd ::= SEMI", + /* 280 */ "ecmd ::= explain cmdx SEMI", + /* 281 */ "explain ::=", + /* 282 */ "trans_opt ::=", + /* 283 */ "trans_opt ::= TRANSACTION", + /* 284 */ "trans_opt ::= TRANSACTION nm", + /* 285 */ "savepoint_opt ::= SAVEPOINT", + /* 286 */ "savepoint_opt ::=", + /* 287 */ "cmd ::= create_table create_table_args", + /* 288 */ "columnlist ::= columnlist COMMA columnname carglist", + /* 289 */ "columnlist ::= columnname carglist", + /* 290 */ "nm ::= ID|INDEXED", + /* 291 */ "nm ::= STRING", + /* 292 */ "nm ::= JOIN_KW", + /* 293 */ "typetoken ::= typename", + /* 294 */ "typename ::= ID|STRING", + /* 295 */ "signed ::= plus_num", + /* 296 */ "signed ::= minus_num", + /* 297 */ "carglist ::= carglist ccons", + /* 298 */ "carglist ::=", + /* 299 */ "ccons ::= NULL onconf", + /* 300 */ "conslist_opt ::= COMMA conslist", + /* 301 */ "conslist ::= conslist tconscomma tcons", + /* 302 */ "conslist ::= tcons", + /* 303 */ "tconscomma ::=", + /* 304 */ "defer_subclause_opt ::= defer_subclause", + /* 305 */ "resolvetype ::= raisetype", + /* 306 */ "selectnowith ::= oneselect", + /* 307 */ "oneselect ::= values", + /* 308 */ "sclp ::= selcollist COMMA", + /* 309 */ "as ::= ID|STRING", + /* 310 */ "expr ::= term", + /* 311 */ "exprlist ::= nexprlist", + /* 312 */ "nmnum ::= plus_num", + /* 313 */ "nmnum ::= nm", + /* 314 */ "nmnum ::= ON", + /* 315 */ "nmnum ::= DELETE", + /* 316 */ "nmnum ::= DEFAULT", + /* 317 */ "plus_num ::= INTEGER|FLOAT", + /* 318 */ "foreach_clause ::=", + /* 319 */ "foreach_clause ::= FOR EACH ROW", + /* 320 */ "trnm ::= nm", + /* 321 */ "tridxby ::=", + /* 322 */ "database_kw_opt ::= DATABASE", + /* 323 */ "database_kw_opt ::=", + /* 324 */ "kwcolumn_opt ::=", + /* 325 */ "kwcolumn_opt ::= COLUMNKW", + /* 326 */ "vtabarglist ::= vtabarg", + /* 327 */ "vtabarglist ::= vtabarglist COMMA vtabarg", + /* 328 */ "vtabarg ::= vtabarg vtabargtoken", + /* 329 */ "anylist ::=", + /* 330 */ "anylist ::= anylist LP anylist RP", + /* 331 */ "anylist ::= anylist ANY", }; #endif /* NDEBUG */ #if YYSTACKDEPTH<=0 /* -** Try to increase the size of the parser stack. +** Try to increase the size of the parser stack. Return the number +** of errors. Return 0 on success. */ -static void yyGrowStack(yyParser *p){ +static int yyGrowStack(yyParser *p){ int newSize; + int idx; yyStackEntry *pNew; newSize = p->yystksz*2 + 100; - pNew = realloc(p->yystack, newSize*sizeof(pNew[0])); + idx = p->yytos ? (int)(p->yytos - p->yystack) : 0; + if( p->yystack==&p->yystk0 ){ + pNew = malloc(newSize*sizeof(pNew[0])); + if( pNew ) pNew[0] = p->yystk0; + }else{ + pNew = realloc(p->yystack, newSize*sizeof(pNew[0])); + } if( pNew ){ p->yystack = pNew; - p->yystksz = newSize; + p->yytos = &p->yystack[idx]; #ifndef NDEBUG if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sStack grows to %d entries!\n", - yyTracePrompt, p->yystksz); + fprintf(yyTraceFILE,"%sStack grows from %d to %d entries.\n", + yyTracePrompt, p->yystksz, newSize); } #endif + p->yystksz = newSize; } + return pNew==0; } #endif +/* Datatype of the argument to the memory allocated passed as the +** second argument to sqlite3ParserAlloc() below. This can be changed by +** putting an appropriate #define in the %include section of the input +** grammar. +*/ +#ifndef YYMALLOCARGTYPE +# define YYMALLOCARGTYPE size_t +#endif + +/* Initialize a new parser that has already been allocated. +*/ +SQLITE_PRIVATE void sqlite3ParserInit(void *yypParser){ + yyParser *pParser = (yyParser*)yypParser; +#ifdef YYTRACKMAXSTACKDEPTH + pParser->yyhwm = 0; +#endif +#if YYSTACKDEPTH<=0 + pParser->yytos = NULL; + pParser->yystack = NULL; + pParser->yystksz = 0; + if( yyGrowStack(pParser) ){ + pParser->yystack = &pParser->yystk0; + pParser->yystksz = 1; + } +#endif +#ifndef YYNOERRORRECOVERY + pParser->yyerrcnt = -1; +#endif + pParser->yytos = pParser->yystack; + pParser->yystack[0].stateno = 0; + pParser->yystack[0].major = 0; +} + +#ifndef sqlite3Parser_ENGINEALWAYSONSTACK /* ** This function allocates a new parser. ** The only argument is a pointer to a function which works like @@ -116127,27 +135880,21 @@ static void yyGrowStack(yyParser *p){ ** A pointer to a parser. This pointer is used in subsequent calls ** to sqlite3Parser and sqlite3ParserFree. */ -SQLITE_PRIVATE void *sqlite3ParserAlloc(void *(*mallocProc)(size_t)){ +SQLITE_PRIVATE void *sqlite3ParserAlloc(void *(*mallocProc)(YYMALLOCARGTYPE)){ yyParser *pParser; - pParser = (yyParser*)(*mallocProc)( (size_t)sizeof(yyParser) ); - if( pParser ){ - pParser->yyidx = -1; -#ifdef YYTRACKMAXSTACKDEPTH - pParser->yyidxMax = 0; -#endif -#if YYSTACKDEPTH<=0 - pParser->yystack = NULL; - pParser->yystksz = 0; - yyGrowStack(pParser); -#endif - } + pParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) ); + if( pParser ) sqlite3ParserInit(pParser); return pParser; } +#endif /* sqlite3Parser_ENGINEALWAYSONSTACK */ -/* The following function deletes the value associated with a -** symbol. The symbol can be either a terminal or nonterminal. -** "yymajor" is the symbol code, and "yypminor" is a pointer to -** the value. + +/* The following function deletes the "minor type" or semantic value +** associated with a symbol. The symbol can be either a terminal +** or nonterminal. "yymajor" is the symbol code, and "yypminor" is +** a pointer to the value to be deleted. The code used to do the +** deletions is derived from the %destructor and/or %token_destructor +** directives of the input grammar. */ static void yy_destructor( yyParser *yypParser, /* The parser */ @@ -116163,81 +135910,84 @@ static void yy_destructor( ** being destroyed before it is finished parsing. ** ** Note: during a reduce, the only symbols destroyed are those - ** which appear on the RHS of the rule, but which are not used + ** which appear on the RHS of the rule, but which are *not* used ** inside the C code. */ +/********* Begin destructor definitions ***************************************/ case 163: /* select */ - case 195: /* selectnowith */ - case 196: /* oneselect */ - case 207: /* values */ + case 194: /* selectnowith */ + case 195: /* oneselect */ + case 206: /* values */ { -sqlite3SelectDelete(pParse->db, (yypminor->yy3)); +sqlite3SelectDelete(pParse->db, (yypminor->yy243)); } break; - case 174: /* term */ - case 175: /* expr */ + case 172: /* term */ + case 173: /* expr */ { -sqlite3ExprDelete(pParse->db, (yypminor->yy346).pExpr); +sqlite3ExprDelete(pParse->db, (yypminor->yy190).pExpr); } break; - case 179: /* idxlist_opt */ - case 188: /* idxlist */ - case 200: /* selcollist */ - case 203: /* groupby_opt */ - case 205: /* orderby_opt */ - case 208: /* nexprlist */ - case 209: /* exprlist */ - case 210: /* sclp */ - case 220: /* sortlist */ - case 221: /* setlist */ - case 228: /* case_exprlist */ + case 177: /* eidlist_opt */ + case 186: /* sortlist */ + case 187: /* eidlist */ + case 199: /* selcollist */ + case 202: /* groupby_opt */ + case 204: /* orderby_opt */ + case 207: /* nexprlist */ + case 208: /* exprlist */ + case 209: /* sclp */ + case 218: /* setlist */ + case 224: /* paren_exprlist */ + case 226: /* case_exprlist */ { -sqlite3ExprListDelete(pParse->db, (yypminor->yy14)); +sqlite3ExprListDelete(pParse->db, (yypminor->yy148)); } break; - case 194: /* fullname */ - case 201: /* from */ - case 212: /* seltablist */ - case 213: /* stl_prefix */ + case 193: /* fullname */ + case 200: /* from */ + case 211: /* seltablist */ + case 212: /* stl_prefix */ { -sqlite3SrcListDelete(pParse->db, (yypminor->yy65)); +sqlite3SrcListDelete(pParse->db, (yypminor->yy185)); } break; - case 197: /* with */ - case 252: /* wqlist */ + case 196: /* with */ + case 250: /* wqlist */ { -sqlite3WithDelete(pParse->db, (yypminor->yy59)); +sqlite3WithDelete(pParse->db, (yypminor->yy285)); } break; - case 202: /* where_opt */ - case 204: /* having_opt */ - case 216: /* on_opt */ - case 227: /* case_operand */ - case 229: /* case_else */ - case 238: /* when_clause */ - case 243: /* key_opt */ + case 201: /* where_opt */ + case 203: /* having_opt */ + case 215: /* on_opt */ + case 225: /* case_operand */ + case 227: /* case_else */ + case 236: /* when_clause */ + case 241: /* key_opt */ { -sqlite3ExprDelete(pParse->db, (yypminor->yy132)); +sqlite3ExprDelete(pParse->db, (yypminor->yy72)); } break; - case 217: /* using_opt */ - case 219: /* idlist */ - case 223: /* inscollist_opt */ + case 216: /* using_opt */ + case 217: /* idlist */ + case 220: /* idlist_opt */ { -sqlite3IdListDelete(pParse->db, (yypminor->yy408)); +sqlite3IdListDelete(pParse->db, (yypminor->yy254)); } break; - case 234: /* trigger_cmd_list */ - case 239: /* trigger_cmd */ + case 232: /* trigger_cmd_list */ + case 237: /* trigger_cmd */ { -sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy473)); +sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy145)); } break; - case 236: /* trigger_event */ + case 234: /* trigger_event */ { -sqlite3IdListDelete(pParse->db, (yypminor->yy378).b); +sqlite3IdListDelete(pParse->db, (yypminor->yy332).b); } break; +/********* End destructor definitions *****************************************/ default: break; /* If no destructor action specified: do nothing */ } } @@ -116247,55 +135997,53 @@ sqlite3IdListDelete(pParse->db, (yypminor->yy378).b); ** ** If there is a destructor routine associated with the token which ** is popped from the stack, then call it. -** -** Return the major token number for the symbol popped. */ -static int yy_pop_parser_stack(yyParser *pParser){ - YYCODETYPE yymajor; - yyStackEntry *yytos = &pParser->yystack[pParser->yyidx]; - - /* There is no mechanism by which the parser stack can be popped below - ** empty in SQLite. */ - if( NEVER(pParser->yyidx<0) ) return 0; +static void yy_pop_parser_stack(yyParser *pParser){ + yyStackEntry *yytos; + assert( pParser->yytos!=0 ); + assert( pParser->yytos > pParser->yystack ); + yytos = pParser->yytos--; #ifndef NDEBUG - if( yyTraceFILE && pParser->yyidx>=0 ){ + if( yyTraceFILE ){ fprintf(yyTraceFILE,"%sPopping %s\n", yyTracePrompt, yyTokenName[yytos->major]); } #endif - yymajor = yytos->major; - yy_destructor(pParser, yymajor, &yytos->minor); - pParser->yyidx--; - return yymajor; + yy_destructor(pParser, yytos->major, &yytos->minor); } +/* +** Clear all secondary memory allocations from the parser +*/ +SQLITE_PRIVATE void sqlite3ParserFinalize(void *p){ + yyParser *pParser = (yyParser*)p; + while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser); +#if YYSTACKDEPTH<=0 + if( pParser->yystack!=&pParser->yystk0 ) free(pParser->yystack); +#endif +} + +#ifndef sqlite3Parser_ENGINEALWAYSONSTACK /* -** Deallocate and destroy a parser. Destructors are all called for +** Deallocate and destroy a parser. Destructors are called for ** all stack elements before shutting the parser down. ** -** Inputs: -**
      -**
    • A pointer to the parser. This should be a pointer -** obtained from sqlite3ParserAlloc. -**
    • A pointer to a function used to reclaim memory obtained -** from malloc. -**
    +** If the YYPARSEFREENEVERNULL macro exists (for example because it +** is defined in a %include section of the input grammar) then it is +** assumed that the input pointer is never NULL. */ SQLITE_PRIVATE void sqlite3ParserFree( void *p, /* The parser to be deleted */ void (*freeProc)(void*) /* Function used to reclaim memory */ ){ - yyParser *pParser = (yyParser*)p; - /* In SQLite, we never try to destroy a parser that was not successfully - ** created in the first place. */ - if( NEVER(pParser==0) ) return; - while( pParser->yyidx>=0 ) yy_pop_parser_stack(pParser); -#if YYSTACKDEPTH<=0 - free(pParser->yystack); +#ifndef YYPARSEFREENEVERNULL + if( p==0 ) return; #endif - (*freeProc)((void*)pParser); + sqlite3ParserFinalize(p); + (*freeProc)(p); } +#endif /* sqlite3Parser_ENGINEALWAYSONSTACK */ /* ** Return the peak depth of the stack for a parser. @@ -116303,33 +136051,28 @@ SQLITE_PRIVATE void sqlite3ParserFree( #ifdef YYTRACKMAXSTACKDEPTH SQLITE_PRIVATE int sqlite3ParserStackPeak(void *p){ yyParser *pParser = (yyParser*)p; - return pParser->yyidxMax; + return pParser->yyhwm; } #endif /* ** Find the appropriate action for a parser given the terminal ** look-ahead token iLookAhead. -** -** If the look-ahead token is YYNOCODE, then check to see if the action is -** independent of the look-ahead. If it is, return the action, otherwise -** return YY_NO_ACTION. */ -static int yy_find_shift_action( +static unsigned int yy_find_shift_action( yyParser *pParser, /* The parser */ YYCODETYPE iLookAhead /* The look-ahead token */ ){ int i; - int stateno = pParser->yystack[pParser->yyidx].stateno; + int stateno = pParser->yytos->stateno; - if( stateno>YY_SHIFT_COUNT - || (i = yy_shift_ofst[stateno])==YY_SHIFT_USE_DFLT ){ - return yy_default[stateno]; - } - assert( iLookAhead!=YYNOCODE ); - i += iLookAhead; - if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){ - if( iLookAhead>0 ){ + if( stateno>=YY_MIN_REDUCE ) return stateno; + assert( stateno <= YY_SHIFT_COUNT ); + do{ + i = yy_shift_ofst[stateno]; + assert( iLookAhead!=YYNOCODE ); + i += iLookAhead; + if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){ #ifdef YYFALLBACK YYCODETYPE iFallback; /* Fallback token */ if( iLookAhead=YY_ACTTAB_COUNT j0 ){ #ifndef NDEBUG if( yyTraceFILE ){ fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n", - yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[YYWILDCARD]); + yyTracePrompt, yyTokenName[iLookAhead], + yyTokenName[YYWILDCARD]); } #endif /* NDEBUG */ return yy_action[j]; } } #endif /* YYWILDCARD */ + return yy_default[stateno]; + }else{ + return yy_action[i]; } - return yy_default[stateno]; - }else{ - return yy_action[i]; - } + }while(1); } /* ** Find the appropriate action for a parser given the non-terminal ** look-ahead token iLookAhead. -** -** If the look-ahead token is YYNOCODE, then check to see if the action is -** independent of the look-ahead. If it is, return the action, otherwise -** return YY_NO_ACTION. */ static int yy_find_reduce_action( int stateno, /* Current state number */ @@ -116410,23 +136152,43 @@ static int yy_find_reduce_action( /* ** The following routine is called if the stack overflows. */ -static void yyStackOverflow(yyParser *yypParser, YYMINORTYPE *yypMinor){ +static void yyStackOverflow(yyParser *yypParser){ sqlite3ParserARG_FETCH; - yypParser->yyidx--; #ifndef NDEBUG if( yyTraceFILE ){ fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt); } #endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); + while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser); /* Here code is inserted which will execute if the parser ** stack every overflows */ +/******** Begin %stack_overflow code ******************************************/ - UNUSED_PARAMETER(yypMinor); /* Silence some compiler warnings */ sqlite3ErrorMsg(pParse, "parser stack overflow"); +/******** End %stack_overflow code ********************************************/ sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument var */ } +/* +** Print tracing information for a SHIFT action +*/ +#ifndef NDEBUG +static void yyTraceShift(yyParser *yypParser, int yyNewState){ + if( yyTraceFILE ){ + if( yyNewStateyytos->major], + yyNewState); + }else{ + fprintf(yyTraceFILE,"%sShift '%s'\n", + yyTracePrompt,yyTokenName[yypParser->yytos->major]); + } + } +} +#else +# define yyTraceShift(X,Y) +#endif + /* ** Perform a shift action. */ @@ -116434,43 +136196,39 @@ static void yy_shift( yyParser *yypParser, /* The parser to be shifted */ int yyNewState, /* The new state to shift in */ int yyMajor, /* The major token to shift in */ - YYMINORTYPE *yypMinor /* Pointer to the minor token to shift in */ + sqlite3ParserTOKENTYPE yyMinor /* The minor token to shift in */ ){ yyStackEntry *yytos; - yypParser->yyidx++; + yypParser->yytos++; #ifdef YYTRACKMAXSTACKDEPTH - if( yypParser->yyidx>yypParser->yyidxMax ){ - yypParser->yyidxMax = yypParser->yyidx; + if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){ + yypParser->yyhwm++; + assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack) ); } #endif #if YYSTACKDEPTH>0 - if( yypParser->yyidx>=YYSTACKDEPTH ){ - yyStackOverflow(yypParser, yypMinor); + if( yypParser->yytos>=&yypParser->yystack[YYSTACKDEPTH] ){ + yypParser->yytos--; + yyStackOverflow(yypParser); return; } #else - if( yypParser->yyidx>=yypParser->yystksz ){ - yyGrowStack(yypParser); - if( yypParser->yyidx>=yypParser->yystksz ){ - yyStackOverflow(yypParser, yypMinor); + if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz] ){ + if( yyGrowStack(yypParser) ){ + yypParser->yytos--; + yyStackOverflow(yypParser); return; } } #endif - yytos = &yypParser->yystack[yypParser->yyidx]; + if( yyNewState > YY_MAX_SHIFT ){ + yyNewState += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE; + } + yytos = yypParser->yytos; yytos->stateno = (YYACTIONTYPE)yyNewState; yytos->major = (YYCODETYPE)yyMajor; - yytos->minor = *yypMinor; -#ifndef NDEBUG - if( yyTraceFILE && yypParser->yyidx>0 ){ - int i; - fprintf(yyTraceFILE,"%sShift %d\n",yyTracePrompt,yyNewState); - fprintf(yyTraceFILE,"%sStack:",yyTracePrompt); - for(i=1; i<=yypParser->yyidx; i++) - fprintf(yyTraceFILE," %s",yyTokenName[yypParser->yystack[i].major]); - fprintf(yyTraceFILE,"\n"); - } -#endif + yytos->minor.yy0 = yyMinor; + yyTraceShift(yypParser, yyNewState); } /* The following table contains information about every rule that @@ -116480,19 +136238,10 @@ static const struct { YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */ unsigned char nrhs; /* Number of right-hand side symbols in the rule */ } yyRuleInfo[] = { - { 144, 1 }, - { 145, 2 }, - { 145, 1 }, - { 146, 1 }, - { 146, 3 }, - { 147, 0 }, { 147, 1 }, { 147, 3 }, { 148, 1 }, { 149, 3 }, - { 151, 0 }, - { 151, 1 }, - { 151, 2 }, { 150, 0 }, { 150, 1 }, { 150, 1 }, @@ -116500,12 +136249,9 @@ static const struct { { 149, 2 }, { 149, 2 }, { 149, 2 }, - { 153, 1 }, - { 153, 0 }, { 149, 2 }, { 149, 3 }, { 149, 5 }, - { 149, 2 }, { 154, 6 }, { 156, 1 }, { 158, 0 }, @@ -116516,218 +136262,199 @@ static const struct { { 155, 2 }, { 162, 0 }, { 162, 2 }, - { 160, 3 }, - { 160, 1 }, - { 164, 3 }, - { 165, 1 }, - { 152, 1 }, - { 152, 1 }, - { 152, 1 }, + { 164, 2 }, { 166, 0 }, - { 166, 1 }, - { 168, 1 }, - { 168, 4 }, - { 168, 6 }, - { 169, 1 }, - { 169, 2 }, - { 170, 1 }, - { 170, 1 }, + { 166, 4 }, + { 166, 6 }, { 167, 2 }, - { 167, 0 }, - { 173, 2 }, - { 173, 2 }, - { 173, 4 }, - { 173, 3 }, - { 173, 3 }, - { 173, 2 }, - { 173, 2 }, - { 173, 3 }, - { 173, 5 }, - { 173, 2 }, - { 173, 4 }, - { 173, 4 }, - { 173, 1 }, - { 173, 2 }, - { 178, 0 }, - { 178, 1 }, - { 180, 0 }, - { 180, 2 }, - { 182, 2 }, - { 182, 3 }, - { 182, 3 }, - { 182, 3 }, - { 183, 2 }, - { 183, 2 }, - { 183, 1 }, - { 183, 1 }, - { 183, 2 }, - { 181, 3 }, - { 181, 2 }, - { 184, 0 }, - { 184, 2 }, - { 184, 2 }, - { 161, 0 }, - { 161, 2 }, - { 185, 3 }, - { 185, 1 }, - { 186, 1 }, - { 186, 0 }, - { 187, 2 }, - { 187, 7 }, - { 187, 5 }, - { 187, 5 }, - { 187, 10 }, - { 189, 0 }, - { 189, 1 }, + { 171, 2 }, + { 171, 2 }, + { 171, 4 }, + { 171, 3 }, + { 171, 3 }, + { 171, 2 }, + { 171, 3 }, + { 171, 5 }, + { 171, 2 }, + { 171, 4 }, + { 171, 4 }, + { 171, 1 }, + { 171, 2 }, { 176, 0 }, - { 176, 3 }, - { 190, 0 }, - { 190, 2 }, - { 191, 1 }, - { 191, 1 }, - { 191, 1 }, + { 176, 1 }, + { 178, 0 }, + { 178, 2 }, + { 180, 2 }, + { 180, 3 }, + { 180, 3 }, + { 180, 3 }, + { 181, 2 }, + { 181, 2 }, + { 181, 1 }, + { 181, 1 }, + { 181, 2 }, + { 179, 3 }, + { 179, 2 }, + { 182, 0 }, + { 182, 2 }, + { 182, 2 }, + { 161, 0 }, + { 184, 1 }, + { 185, 2 }, + { 185, 7 }, + { 185, 5 }, + { 185, 5 }, + { 185, 10 }, + { 188, 0 }, + { 174, 0 }, + { 174, 3 }, + { 189, 0 }, + { 189, 2 }, + { 190, 1 }, + { 190, 1 }, { 149, 4 }, - { 193, 2 }, - { 193, 0 }, - { 149, 8 }, + { 192, 2 }, + { 192, 0 }, + { 149, 9 }, { 149, 4 }, { 149, 1 }, { 163, 2 }, - { 195, 1 }, - { 195, 3 }, + { 194, 3 }, + { 197, 1 }, + { 197, 2 }, + { 197, 1 }, + { 195, 9 }, + { 206, 4 }, + { 206, 5 }, { 198, 1 }, - { 198, 2 }, { 198, 1 }, - { 196, 9 }, - { 196, 1 }, - { 207, 4 }, - { 207, 5 }, - { 199, 1 }, - { 199, 1 }, - { 199, 0 }, + { 198, 0 }, + { 209, 0 }, + { 199, 3 }, + { 199, 2 }, + { 199, 4 }, { 210, 2 }, { 210, 0 }, - { 200, 3 }, + { 200, 0 }, { 200, 2 }, - { 200, 4 }, - { 211, 2 }, - { 211, 1 }, - { 211, 0 }, - { 201, 0 }, - { 201, 2 }, - { 213, 2 }, - { 213, 0 }, - { 212, 7 }, - { 212, 7 }, - { 212, 7 }, + { 212, 2 }, + { 212, 0 }, + { 211, 7 }, + { 211, 9 }, + { 211, 7 }, + { 211, 7 }, { 159, 0 }, { 159, 2 }, - { 194, 2 }, - { 214, 1 }, - { 214, 2 }, - { 214, 3 }, - { 214, 4 }, - { 216, 2 }, - { 216, 0 }, - { 215, 0 }, - { 215, 3 }, + { 193, 2 }, + { 213, 1 }, + { 213, 2 }, + { 213, 3 }, + { 213, 4 }, { 215, 2 }, - { 217, 4 }, - { 217, 0 }, - { 205, 0 }, - { 205, 3 }, - { 220, 4 }, - { 220, 2 }, - { 177, 1 }, - { 177, 1 }, - { 177, 0 }, - { 203, 0 }, - { 203, 3 }, + { 215, 0 }, + { 214, 0 }, + { 214, 3 }, + { 214, 2 }, + { 216, 4 }, + { 216, 0 }, { 204, 0 }, - { 204, 2 }, - { 206, 0 }, - { 206, 2 }, - { 206, 4 }, - { 206, 4 }, - { 149, 6 }, + { 204, 3 }, + { 186, 4 }, + { 186, 2 }, + { 175, 1 }, + { 175, 1 }, + { 175, 0 }, { 202, 0 }, - { 202, 2 }, + { 202, 3 }, + { 203, 0 }, + { 203, 2 }, + { 205, 0 }, + { 205, 2 }, + { 205, 4 }, + { 205, 4 }, + { 149, 6 }, + { 201, 0 }, + { 201, 2 }, { 149, 8 }, - { 221, 5 }, - { 221, 3 }, + { 218, 5 }, + { 218, 7 }, + { 218, 3 }, + { 218, 5 }, { 149, 6 }, { 149, 7 }, - { 222, 2 }, - { 222, 1 }, - { 223, 0 }, - { 223, 3 }, - { 219, 3 }, + { 219, 2 }, { 219, 1 }, - { 175, 1 }, - { 175, 3 }, - { 174, 1 }, - { 175, 1 }, - { 175, 1 }, - { 175, 3 }, - { 175, 5 }, - { 174, 1 }, - { 174, 1 }, - { 175, 1 }, - { 175, 3 }, - { 175, 6 }, - { 175, 5 }, - { 175, 4 }, - { 174, 1 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 175, 3 }, - { 224, 1 }, - { 224, 2 }, - { 175, 3 }, - { 175, 5 }, - { 175, 2 }, - { 175, 3 }, - { 175, 3 }, - { 175, 4 }, - { 175, 2 }, - { 175, 2 }, - { 175, 2 }, - { 175, 2 }, - { 225, 1 }, - { 225, 2 }, - { 175, 5 }, - { 226, 1 }, - { 226, 2 }, - { 175, 5 }, - { 175, 3 }, - { 175, 5 }, - { 175, 4 }, - { 175, 4 }, - { 175, 5 }, - { 228, 5 }, - { 228, 4 }, - { 229, 2 }, - { 229, 0 }, - { 227, 1 }, + { 220, 0 }, + { 220, 3 }, + { 217, 3 }, + { 217, 1 }, + { 173, 3 }, + { 172, 1 }, + { 173, 1 }, + { 173, 1 }, + { 173, 3 }, + { 173, 5 }, + { 172, 1 }, + { 172, 1 }, + { 172, 1 }, + { 173, 1 }, + { 173, 3 }, + { 173, 6 }, + { 173, 5 }, + { 173, 4 }, + { 172, 1 }, + { 173, 5 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 173, 3 }, + { 221, 1 }, + { 221, 2 }, + { 173, 3 }, + { 173, 5 }, + { 173, 2 }, + { 173, 3 }, + { 173, 3 }, + { 173, 4 }, + { 173, 2 }, + { 173, 2 }, + { 173, 2 }, + { 173, 2 }, + { 222, 1 }, + { 222, 2 }, + { 173, 5 }, + { 223, 1 }, + { 223, 2 }, + { 173, 5 }, + { 173, 3 }, + { 173, 5 }, + { 173, 5 }, + { 173, 4 }, + { 173, 5 }, + { 226, 5 }, + { 226, 4 }, + { 227, 2 }, { 227, 0 }, - { 209, 1 }, - { 209, 0 }, - { 208, 3 }, - { 208, 1 }, + { 225, 1 }, + { 225, 0 }, + { 208, 0 }, + { 207, 3 }, + { 207, 1 }, + { 224, 0 }, + { 224, 3 }, { 149, 12 }, - { 230, 1 }, - { 230, 0 }, - { 179, 0 }, - { 179, 3 }, - { 188, 5 }, - { 188, 3 }, - { 231, 0 }, - { 231, 2 }, + { 228, 1 }, + { 228, 0 }, + { 177, 0 }, + { 177, 3 }, + { 187, 5 }, + { 187, 3 }, + { 229, 0 }, + { 229, 2 }, { 149, 4 }, { 149, 1 }, { 149, 2 }, @@ -116736,77 +136463,113 @@ static const struct { { 149, 6 }, { 149, 5 }, { 149, 6 }, - { 232, 1 }, - { 232, 1 }, - { 232, 1 }, - { 232, 1 }, - { 232, 1 }, - { 171, 2 }, - { 171, 1 }, - { 172, 2 }, + { 169, 2 }, + { 170, 2 }, { 149, 5 }, - { 233, 11 }, - { 235, 1 }, - { 235, 1 }, - { 235, 2 }, - { 235, 0 }, - { 236, 1 }, - { 236, 1 }, - { 236, 3 }, - { 237, 0 }, - { 237, 3 }, - { 238, 0 }, - { 238, 2 }, + { 231, 11 }, + { 233, 1 }, + { 233, 1 }, + { 233, 2 }, + { 233, 0 }, + { 234, 1 }, + { 234, 1 }, { 234, 3 }, - { 234, 2 }, - { 240, 1 }, - { 240, 3 }, + { 236, 0 }, + { 236, 2 }, + { 232, 3 }, + { 232, 2 }, + { 238, 3 }, + { 239, 3 }, + { 239, 2 }, + { 237, 7 }, + { 237, 5 }, + { 237, 5 }, + { 237, 1 }, + { 173, 4 }, + { 173, 6 }, + { 191, 1 }, + { 191, 1 }, + { 191, 1 }, + { 149, 4 }, + { 149, 6 }, + { 149, 3 }, { 241, 0 }, - { 241, 3 }, { 241, 2 }, - { 239, 7 }, - { 239, 5 }, - { 239, 5 }, - { 239, 1 }, - { 175, 4 }, - { 175, 6 }, - { 192, 1 }, - { 192, 1 }, - { 192, 1 }, - { 149, 4 }, - { 149, 6 }, + { 149, 1 }, { 149, 3 }, - { 243, 0 }, - { 243, 2 }, + { 149, 1 }, + { 149, 3 }, + { 149, 6 }, + { 149, 7 }, { 242, 1 }, - { 242, 0 }, - { 149, 1 }, - { 149, 3 }, - { 149, 1 }, - { 149, 3 }, - { 149, 6 }, - { 149, 6 }, - { 244, 1 }, - { 245, 0 }, - { 245, 1 }, { 149, 1 }, { 149, 4 }, - { 246, 8 }, + { 244, 8 }, + { 246, 0 }, { 247, 1 }, { 247, 3 }, - { 248, 0 }, - { 248, 2 }, - { 249, 1 }, - { 249, 3 }, - { 250, 1 }, - { 251, 0 }, - { 251, 4 }, - { 251, 2 }, - { 197, 0 }, - { 197, 2 }, - { 197, 3 }, - { 252, 6 }, - { 252, 8 }, + { 248, 1 }, + { 196, 0 }, + { 196, 2 }, + { 196, 3 }, + { 250, 6 }, + { 250, 8 }, + { 144, 1 }, + { 145, 2 }, + { 145, 1 }, + { 146, 1 }, + { 146, 3 }, + { 147, 0 }, + { 151, 0 }, + { 151, 1 }, + { 151, 2 }, + { 153, 1 }, + { 153, 0 }, + { 149, 2 }, + { 160, 4 }, + { 160, 2 }, + { 152, 1 }, + { 152, 1 }, + { 152, 1 }, + { 166, 1 }, + { 167, 1 }, + { 168, 1 }, + { 168, 1 }, + { 165, 2 }, + { 165, 0 }, + { 171, 2 }, + { 161, 2 }, + { 183, 3 }, + { 183, 1 }, + { 184, 0 }, + { 188, 1 }, + { 190, 1 }, + { 194, 1 }, + { 195, 1 }, + { 209, 2 }, + { 210, 1 }, + { 173, 1 }, + { 208, 1 }, + { 230, 1 }, + { 230, 1 }, + { 230, 1 }, + { 230, 1 }, + { 230, 1 }, + { 169, 1 }, + { 235, 0 }, + { 235, 3 }, + { 238, 1 }, + { 239, 0 }, + { 240, 1 }, + { 240, 0 }, + { 243, 0 }, + { 243, 1 }, + { 245, 1 }, + { 245, 3 }, + { 246, 2 }, + { 249, 0 }, + { 249, 4 }, + { 249, 2 }, }; static void yy_accept(yyParser*); /* Forward Declaration */ @@ -116817,40 +136580,47 @@ static void yy_accept(yyParser*); /* Forward Declaration */ */ static void yy_reduce( yyParser *yypParser, /* The parser */ - int yyruleno /* Number of the rule by which to reduce */ + unsigned int yyruleno /* Number of the rule by which to reduce */ ){ int yygoto; /* The next state */ int yyact; /* The next action */ - YYMINORTYPE yygotominor; /* The LHS of the rule reduced */ yyStackEntry *yymsp; /* The top of the parser's stack */ int yysize; /* Amount to pop the stack */ sqlite3ParserARG_FETCH; - yymsp = &yypParser->yystack[yypParser->yyidx]; + yymsp = yypParser->yytos; #ifndef NDEBUG - if( yyTraceFILE && yyruleno>=0 - && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){ - fprintf(yyTraceFILE, "%sReduce [%s].\n", yyTracePrompt, - yyRuleName[yyruleno]); + if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){ + yysize = yyRuleInfo[yyruleno].nrhs; + fprintf(yyTraceFILE, "%sReduce [%s], go to state %d.\n", yyTracePrompt, + yyRuleName[yyruleno], yymsp[-yysize].stateno); } #endif /* NDEBUG */ - /* Silence complaints from purify about yygotominor being uninitialized - ** in some cases when it is copied into the stack after the following - ** switch. yygotominor is uninitialized when a rule reduces that does - ** not set the value of its left-hand side nonterminal. Leaving the - ** value of the nonterminal uninitialized is utterly harmless as long - ** as the value is never used. So really the only thing this code - ** accomplishes is to quieten purify. - ** - ** 2007-01-16: The wireshark project (www.wireshark.org) reports that - ** without this code, their parser segfaults. I'm not sure what there - ** parser is doing to make this happen. This is the second bug report - ** from wireshark this week. Clearly they are stressing Lemon in ways - ** that it has not been previously stressed... (SQLite ticket #2172) - */ - /*memset(&yygotominor, 0, sizeof(yygotominor));*/ - yygotominor = yyzerominor; - + /* Check that the stack is large enough to grow by a single entry + ** if the RHS of the rule is empty. This ensures that there is room + ** enough on the stack to push the LHS value */ + if( yyRuleInfo[yyruleno].nrhs==0 ){ +#ifdef YYTRACKMAXSTACKDEPTH + if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){ + yypParser->yyhwm++; + assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack)); + } +#endif +#if YYSTACKDEPTH>0 + if( yypParser->yytos>=&yypParser->yystack[YYSTACKDEPTH-1] ){ + yyStackOverflow(yypParser); + return; + } +#else + if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){ + if( yyGrowStack(yypParser) ){ + yyStackOverflow(yypParser); + return; + } + yymsp = yypParser->yytos; + } +#endif + } switch( yyruleno ){ /* Beginning here are the reduction cases. A typical example @@ -116861,764 +136631,814 @@ static void yy_reduce( ** #line ** break; */ - case 5: /* explain ::= */ -{ sqlite3BeginParse(pParse, 0); } +/********** Begin reduce actions **********************************************/ + YYMINORTYPE yylhsminor; + case 0: /* explain ::= EXPLAIN */ +{ pParse->explain = 1; } break; - case 6: /* explain ::= EXPLAIN */ -{ sqlite3BeginParse(pParse, 1); } + case 1: /* explain ::= EXPLAIN QUERY PLAN */ +{ pParse->explain = 2; } break; - case 7: /* explain ::= EXPLAIN QUERY PLAN */ -{ sqlite3BeginParse(pParse, 2); } - break; - case 8: /* cmdx ::= cmd */ + case 2: /* cmdx ::= cmd */ { sqlite3FinishCoding(pParse); } break; - case 9: /* cmd ::= BEGIN transtype trans_opt */ -{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy328);} + case 3: /* cmd ::= BEGIN transtype trans_opt */ +{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy194);} break; - case 13: /* transtype ::= */ -{yygotominor.yy328 = TK_DEFERRED;} + case 4: /* transtype ::= */ +{yymsp[1].minor.yy194 = TK_DEFERRED;} break; - case 14: /* transtype ::= DEFERRED */ - case 15: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==15); - case 16: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==16); - case 115: /* multiselect_op ::= UNION */ yytestcase(yyruleno==115); - case 117: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==117); -{yygotominor.yy328 = yymsp[0].major;} + case 5: /* transtype ::= DEFERRED */ + case 6: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==6); + case 7: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==7); +{yymsp[0].minor.yy194 = yymsp[0].major; /*A-overwrites-X*/} break; - case 17: /* cmd ::= COMMIT trans_opt */ - case 18: /* cmd ::= END trans_opt */ yytestcase(yyruleno==18); + case 8: /* cmd ::= COMMIT trans_opt */ + case 9: /* cmd ::= END trans_opt */ yytestcase(yyruleno==9); {sqlite3CommitTransaction(pParse);} break; - case 19: /* cmd ::= ROLLBACK trans_opt */ + case 10: /* cmd ::= ROLLBACK trans_opt */ {sqlite3RollbackTransaction(pParse);} break; - case 22: /* cmd ::= SAVEPOINT nm */ + case 11: /* cmd ::= SAVEPOINT nm */ { sqlite3Savepoint(pParse, SAVEPOINT_BEGIN, &yymsp[0].minor.yy0); } break; - case 23: /* cmd ::= RELEASE savepoint_opt nm */ + case 12: /* cmd ::= RELEASE savepoint_opt nm */ { sqlite3Savepoint(pParse, SAVEPOINT_RELEASE, &yymsp[0].minor.yy0); } break; - case 24: /* cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */ + case 13: /* cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */ { sqlite3Savepoint(pParse, SAVEPOINT_ROLLBACK, &yymsp[0].minor.yy0); } break; - case 26: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */ + case 14: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */ { - sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy328,0,0,yymsp[-2].minor.yy328); + sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy194,0,0,yymsp[-2].minor.yy194); } break; - case 27: /* createkw ::= CREATE */ + case 15: /* createkw ::= CREATE */ +{disableLookaside(pParse);} + break; + case 16: /* ifnotexists ::= */ + case 19: /* temp ::= */ yytestcase(yyruleno==19); + case 22: /* table_options ::= */ yytestcase(yyruleno==22); + case 42: /* autoinc ::= */ yytestcase(yyruleno==42); + case 57: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==57); + case 67: /* defer_subclause_opt ::= */ yytestcase(yyruleno==67); + case 76: /* ifexists ::= */ yytestcase(yyruleno==76); + case 90: /* distinct ::= */ yytestcase(yyruleno==90); + case 215: /* collate ::= */ yytestcase(yyruleno==215); +{yymsp[1].minor.yy194 = 0;} + break; + case 17: /* ifnotexists ::= IF NOT EXISTS */ +{yymsp[-2].minor.yy194 = 1;} + break; + case 18: /* temp ::= TEMP */ + case 43: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==43); +{yymsp[0].minor.yy194 = 1;} + break; + case 20: /* create_table_args ::= LP columnlist conslist_opt RP table_options */ { - pParse->db->lookaside.bEnabled = 0; - yygotominor.yy0 = yymsp[0].minor.yy0; + sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy194,0); } break; - case 28: /* ifnotexists ::= */ - case 31: /* temp ::= */ yytestcase(yyruleno==31); - case 68: /* autoinc ::= */ yytestcase(yyruleno==68); - case 81: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ yytestcase(yyruleno==81); - case 83: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==83); - case 85: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ yytestcase(yyruleno==85); - case 97: /* defer_subclause_opt ::= */ yytestcase(yyruleno==97); - case 108: /* ifexists ::= */ yytestcase(yyruleno==108); - case 218: /* between_op ::= BETWEEN */ yytestcase(yyruleno==218); - case 221: /* in_op ::= IN */ yytestcase(yyruleno==221); -{yygotominor.yy328 = 0;} - break; - case 29: /* ifnotexists ::= IF NOT EXISTS */ - case 30: /* temp ::= TEMP */ yytestcase(yyruleno==30); - case 69: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==69); - case 84: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */ yytestcase(yyruleno==84); - case 107: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==107); - case 219: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==219); - case 222: /* in_op ::= NOT IN */ yytestcase(yyruleno==222); -{yygotominor.yy328 = 1;} - break; - case 32: /* create_table_args ::= LP columnlist conslist_opt RP table_options */ + case 21: /* create_table_args ::= AS select */ { - sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy186,0); + sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy243); + sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy243); } break; - case 33: /* create_table_args ::= AS select */ -{ - sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy3); - sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy3); -} - break; - case 34: /* table_options ::= */ -{yygotominor.yy186 = 0;} - break; - case 35: /* table_options ::= WITHOUT nm */ + case 23: /* table_options ::= WITHOUT nm */ { if( yymsp[0].minor.yy0.n==5 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"rowid",5)==0 ){ - yygotominor.yy186 = TF_WithoutRowid; + yymsp[-1].minor.yy194 = TF_WithoutRowid | TF_NoVisibleRowid; }else{ - yygotominor.yy186 = 0; + yymsp[-1].minor.yy194 = 0; sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z); } } break; - case 38: /* column ::= columnid type carglist */ + case 24: /* columnname ::= nm typetoken */ +{sqlite3AddColumn(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);} + break; + case 25: /* typetoken ::= */ + case 60: /* conslist_opt ::= */ yytestcase(yyruleno==60); + case 96: /* as ::= */ yytestcase(yyruleno==96); +{yymsp[1].minor.yy0.n = 0; yymsp[1].minor.yy0.z = 0;} + break; + case 26: /* typetoken ::= typename LP signed RP */ { - yygotominor.yy0.z = yymsp[-2].minor.yy0.z; - yygotominor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-2].minor.yy0.z) + pParse->sLastToken.n; + yymsp[-3].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-3].minor.yy0.z); } break; - case 39: /* columnid ::= nm */ + case 27: /* typetoken ::= typename LP signed COMMA signed RP */ { - sqlite3AddColumn(pParse,&yymsp[0].minor.yy0); - yygotominor.yy0 = yymsp[0].minor.yy0; - pParse->constraintName.n = 0; + yymsp[-5].minor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-5].minor.yy0.z); } break; - case 40: /* nm ::= ID|INDEXED */ - case 41: /* nm ::= STRING */ yytestcase(yyruleno==41); - case 42: /* nm ::= JOIN_KW */ yytestcase(yyruleno==42); - case 45: /* typetoken ::= typename */ yytestcase(yyruleno==45); - case 48: /* typename ::= ID|STRING */ yytestcase(yyruleno==48); - case 130: /* as ::= AS nm */ yytestcase(yyruleno==130); - case 131: /* as ::= ID|STRING */ yytestcase(yyruleno==131); - case 141: /* dbnm ::= DOT nm */ yytestcase(yyruleno==141); - case 150: /* indexed_opt ::= INDEXED BY nm */ yytestcase(yyruleno==150); - case 247: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==247); - case 256: /* nmnum ::= plus_num */ yytestcase(yyruleno==256); - case 257: /* nmnum ::= nm */ yytestcase(yyruleno==257); - case 258: /* nmnum ::= ON */ yytestcase(yyruleno==258); - case 259: /* nmnum ::= DELETE */ yytestcase(yyruleno==259); - case 260: /* nmnum ::= DEFAULT */ yytestcase(yyruleno==260); - case 261: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==261); - case 262: /* plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==262); - case 263: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==263); - case 279: /* trnm ::= nm */ yytestcase(yyruleno==279); -{yygotominor.yy0 = yymsp[0].minor.yy0;} + case 28: /* typename ::= typename ID|STRING */ +{yymsp[-1].minor.yy0.n=yymsp[0].minor.yy0.n+(int)(yymsp[0].minor.yy0.z-yymsp[-1].minor.yy0.z);} break; - case 44: /* type ::= typetoken */ -{sqlite3AddColumnType(pParse,&yymsp[0].minor.yy0);} - break; - case 46: /* typetoken ::= typename LP signed RP */ -{ - yygotominor.yy0.z = yymsp[-3].minor.yy0.z; - yygotominor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-3].minor.yy0.z); -} - break; - case 47: /* typetoken ::= typename LP signed COMMA signed RP */ -{ - yygotominor.yy0.z = yymsp[-5].minor.yy0.z; - yygotominor.yy0.n = (int)(&yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] - yymsp[-5].minor.yy0.z); -} - break; - case 49: /* typename ::= typename ID|STRING */ -{yygotominor.yy0.z=yymsp[-1].minor.yy0.z; yygotominor.yy0.n=yymsp[0].minor.yy0.n+(int)(yymsp[0].minor.yy0.z-yymsp[-1].minor.yy0.z);} - break; - case 54: /* ccons ::= CONSTRAINT nm */ - case 92: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==92); + case 29: /* ccons ::= CONSTRAINT nm */ + case 62: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==62); {pParse->constraintName = yymsp[0].minor.yy0;} break; - case 55: /* ccons ::= DEFAULT term */ - case 57: /* ccons ::= DEFAULT PLUS term */ yytestcase(yyruleno==57); -{sqlite3AddDefaultValue(pParse,&yymsp[0].minor.yy346);} + case 30: /* ccons ::= DEFAULT term */ + case 32: /* ccons ::= DEFAULT PLUS term */ yytestcase(yyruleno==32); +{sqlite3AddDefaultValue(pParse,&yymsp[0].minor.yy190);} break; - case 56: /* ccons ::= DEFAULT LP expr RP */ -{sqlite3AddDefaultValue(pParse,&yymsp[-1].minor.yy346);} + case 31: /* ccons ::= DEFAULT LP expr RP */ +{sqlite3AddDefaultValue(pParse,&yymsp[-1].minor.yy190);} break; - case 58: /* ccons ::= DEFAULT MINUS term */ + case 33: /* ccons ::= DEFAULT MINUS term */ { ExprSpan v; - v.pExpr = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy346.pExpr, 0, 0); + v.pExpr = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy190.pExpr, 0); v.zStart = yymsp[-1].minor.yy0.z; - v.zEnd = yymsp[0].minor.yy346.zEnd; + v.zEnd = yymsp[0].minor.yy190.zEnd; sqlite3AddDefaultValue(pParse,&v); } break; - case 59: /* ccons ::= DEFAULT ID|INDEXED */ + case 34: /* ccons ::= DEFAULT ID|INDEXED */ { ExprSpan v; - spanExpr(&v, pParse, TK_STRING, &yymsp[0].minor.yy0); + spanExpr(&v, pParse, TK_STRING, yymsp[0].minor.yy0); sqlite3AddDefaultValue(pParse,&v); } break; - case 61: /* ccons ::= NOT NULL onconf */ -{sqlite3AddNotNull(pParse, yymsp[0].minor.yy328);} + case 35: /* ccons ::= NOT NULL onconf */ +{sqlite3AddNotNull(pParse, yymsp[0].minor.yy194);} break; - case 62: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */ -{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy328,yymsp[0].minor.yy328,yymsp[-2].minor.yy328);} + case 36: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */ +{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy194,yymsp[0].minor.yy194,yymsp[-2].minor.yy194);} break; - case 63: /* ccons ::= UNIQUE onconf */ -{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy328,0,0,0,0);} + case 37: /* ccons ::= UNIQUE onconf */ +{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy194,0,0,0,0, + SQLITE_IDXTYPE_UNIQUE);} break; - case 64: /* ccons ::= CHECK LP expr RP */ -{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy346.pExpr);} + case 38: /* ccons ::= CHECK LP expr RP */ +{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy190.pExpr);} break; - case 65: /* ccons ::= REFERENCES nm idxlist_opt refargs */ -{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy14,yymsp[0].minor.yy328);} + case 39: /* ccons ::= REFERENCES nm eidlist_opt refargs */ +{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy148,yymsp[0].minor.yy194);} break; - case 66: /* ccons ::= defer_subclause */ -{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy328);} + case 40: /* ccons ::= defer_subclause */ +{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy194);} break; - case 67: /* ccons ::= COLLATE ID|STRING */ + case 41: /* ccons ::= COLLATE ID|STRING */ {sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);} break; - case 70: /* refargs ::= */ -{ yygotominor.yy328 = OE_None*0x0101; /* EV: R-19803-45884 */} + case 44: /* refargs ::= */ +{ yymsp[1].minor.yy194 = OE_None*0x0101; /* EV: R-19803-45884 */} break; - case 71: /* refargs ::= refargs refarg */ -{ yygotominor.yy328 = (yymsp[-1].minor.yy328 & ~yymsp[0].minor.yy429.mask) | yymsp[0].minor.yy429.value; } + case 45: /* refargs ::= refargs refarg */ +{ yymsp[-1].minor.yy194 = (yymsp[-1].minor.yy194 & ~yymsp[0].minor.yy497.mask) | yymsp[0].minor.yy497.value; } break; - case 72: /* refarg ::= MATCH nm */ - case 73: /* refarg ::= ON INSERT refact */ yytestcase(yyruleno==73); -{ yygotominor.yy429.value = 0; yygotominor.yy429.mask = 0x000000; } + case 46: /* refarg ::= MATCH nm */ +{ yymsp[-1].minor.yy497.value = 0; yymsp[-1].minor.yy497.mask = 0x000000; } break; - case 74: /* refarg ::= ON DELETE refact */ -{ yygotominor.yy429.value = yymsp[0].minor.yy328; yygotominor.yy429.mask = 0x0000ff; } + case 47: /* refarg ::= ON INSERT refact */ +{ yymsp[-2].minor.yy497.value = 0; yymsp[-2].minor.yy497.mask = 0x000000; } break; - case 75: /* refarg ::= ON UPDATE refact */ -{ yygotominor.yy429.value = yymsp[0].minor.yy328<<8; yygotominor.yy429.mask = 0x00ff00; } + case 48: /* refarg ::= ON DELETE refact */ +{ yymsp[-2].minor.yy497.value = yymsp[0].minor.yy194; yymsp[-2].minor.yy497.mask = 0x0000ff; } break; - case 76: /* refact ::= SET NULL */ -{ yygotominor.yy328 = OE_SetNull; /* EV: R-33326-45252 */} + case 49: /* refarg ::= ON UPDATE refact */ +{ yymsp[-2].minor.yy497.value = yymsp[0].minor.yy194<<8; yymsp[-2].minor.yy497.mask = 0x00ff00; } break; - case 77: /* refact ::= SET DEFAULT */ -{ yygotominor.yy328 = OE_SetDflt; /* EV: R-33326-45252 */} + case 50: /* refact ::= SET NULL */ +{ yymsp[-1].minor.yy194 = OE_SetNull; /* EV: R-33326-45252 */} break; - case 78: /* refact ::= CASCADE */ -{ yygotominor.yy328 = OE_Cascade; /* EV: R-33326-45252 */} + case 51: /* refact ::= SET DEFAULT */ +{ yymsp[-1].minor.yy194 = OE_SetDflt; /* EV: R-33326-45252 */} break; - case 79: /* refact ::= RESTRICT */ -{ yygotominor.yy328 = OE_Restrict; /* EV: R-33326-45252 */} + case 52: /* refact ::= CASCADE */ +{ yymsp[0].minor.yy194 = OE_Cascade; /* EV: R-33326-45252 */} break; - case 80: /* refact ::= NO ACTION */ -{ yygotominor.yy328 = OE_None; /* EV: R-33326-45252 */} + case 53: /* refact ::= RESTRICT */ +{ yymsp[0].minor.yy194 = OE_Restrict; /* EV: R-33326-45252 */} break; - case 82: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ - case 98: /* defer_subclause_opt ::= defer_subclause */ yytestcase(yyruleno==98); - case 100: /* onconf ::= ON CONFLICT resolvetype */ yytestcase(yyruleno==100); - case 103: /* resolvetype ::= raisetype */ yytestcase(yyruleno==103); -{yygotominor.yy328 = yymsp[0].minor.yy328;} + case 54: /* refact ::= NO ACTION */ +{ yymsp[-1].minor.yy194 = OE_None; /* EV: R-33326-45252 */} break; - case 86: /* conslist_opt ::= */ -{yygotominor.yy0.n = 0; yygotominor.yy0.z = 0;} + case 55: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */ +{yymsp[-2].minor.yy194 = 0;} break; - case 87: /* conslist_opt ::= COMMA conslist */ -{yygotominor.yy0 = yymsp[-1].minor.yy0;} + case 56: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */ + case 71: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==71); + case 144: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==144); +{yymsp[-1].minor.yy194 = yymsp[0].minor.yy194;} break; - case 90: /* tconscomma ::= COMMA */ + case 58: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */ + case 75: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==75); + case 187: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==187); + case 190: /* in_op ::= NOT IN */ yytestcase(yyruleno==190); + case 216: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==216); +{yymsp[-1].minor.yy194 = 1;} + break; + case 59: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ +{yymsp[-1].minor.yy194 = 0;} + break; + case 61: /* tconscomma ::= COMMA */ {pParse->constraintName.n = 0;} break; - case 93: /* tcons ::= PRIMARY KEY LP idxlist autoinc RP onconf */ -{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy14,yymsp[0].minor.yy328,yymsp[-2].minor.yy328,0);} + case 63: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ +{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy148,yymsp[0].minor.yy194,yymsp[-2].minor.yy194,0);} break; - case 94: /* tcons ::= UNIQUE LP idxlist RP onconf */ -{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy14,yymsp[0].minor.yy328,0,0,0,0);} + case 64: /* tcons ::= UNIQUE LP sortlist RP onconf */ +{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy148,yymsp[0].minor.yy194,0,0,0,0, + SQLITE_IDXTYPE_UNIQUE);} break; - case 95: /* tcons ::= CHECK LP expr RP onconf */ -{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy346.pExpr);} + case 65: /* tcons ::= CHECK LP expr RP onconf */ +{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy190.pExpr);} break; - case 96: /* tcons ::= FOREIGN KEY LP idxlist RP REFERENCES nm idxlist_opt refargs defer_subclause_opt */ + case 66: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ { - sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy14, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy14, yymsp[-1].minor.yy328); - sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy328); + sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy148, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy148, yymsp[-1].minor.yy194); + sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy194); } break; - case 99: /* onconf ::= */ -{yygotominor.yy328 = OE_Default;} + case 68: /* onconf ::= */ + case 70: /* orconf ::= */ yytestcase(yyruleno==70); +{yymsp[1].minor.yy194 = OE_Default;} break; - case 101: /* orconf ::= */ -{yygotominor.yy186 = OE_Default;} + case 69: /* onconf ::= ON CONFLICT resolvetype */ +{yymsp[-2].minor.yy194 = yymsp[0].minor.yy194;} break; - case 102: /* orconf ::= OR resolvetype */ -{yygotominor.yy186 = (u8)yymsp[0].minor.yy328;} + case 72: /* resolvetype ::= IGNORE */ +{yymsp[0].minor.yy194 = OE_Ignore;} break; - case 104: /* resolvetype ::= IGNORE */ -{yygotominor.yy328 = OE_Ignore;} + case 73: /* resolvetype ::= REPLACE */ + case 145: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==145); +{yymsp[0].minor.yy194 = OE_Replace;} break; - case 105: /* resolvetype ::= REPLACE */ -{yygotominor.yy328 = OE_Replace;} - break; - case 106: /* cmd ::= DROP TABLE ifexists fullname */ + case 74: /* cmd ::= DROP TABLE ifexists fullname */ { - sqlite3DropTable(pParse, yymsp[0].minor.yy65, 0, yymsp[-1].minor.yy328); + sqlite3DropTable(pParse, yymsp[0].minor.yy185, 0, yymsp[-1].minor.yy194); } break; - case 109: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm AS select */ + case 77: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ { - sqlite3CreateView(pParse, &yymsp[-7].minor.yy0, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, yymsp[0].minor.yy3, yymsp[-6].minor.yy328, yymsp[-4].minor.yy328); + sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy148, yymsp[0].minor.yy243, yymsp[-7].minor.yy194, yymsp[-5].minor.yy194); } break; - case 110: /* cmd ::= DROP VIEW ifexists fullname */ + case 78: /* cmd ::= DROP VIEW ifexists fullname */ { - sqlite3DropTable(pParse, yymsp[0].minor.yy65, 1, yymsp[-1].minor.yy328); + sqlite3DropTable(pParse, yymsp[0].minor.yy185, 1, yymsp[-1].minor.yy194); } break; - case 111: /* cmd ::= select */ + case 79: /* cmd ::= select */ { SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0}; - sqlite3Select(pParse, yymsp[0].minor.yy3, &dest); - sqlite3ExplainBegin(pParse->pVdbe); - sqlite3ExplainSelect(pParse->pVdbe, yymsp[0].minor.yy3); - sqlite3ExplainFinish(pParse->pVdbe); - sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy3); + sqlite3Select(pParse, yymsp[0].minor.yy243, &dest); + sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy243); } break; - case 112: /* select ::= with selectnowith */ -{ - if( yymsp[0].minor.yy3 ){ - yymsp[0].minor.yy3->pWith = yymsp[-1].minor.yy59; + case 80: /* select ::= with selectnowith */ +{ + Select *p = yymsp[0].minor.yy243; + if( p ){ + p->pWith = yymsp[-1].minor.yy285; + parserDoubleLinkSelect(pParse, p); }else{ - sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy59); + sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy285); } - yygotominor.yy3 = yymsp[0].minor.yy3; + yymsp[-1].minor.yy243 = p; /*A-overwrites-W*/ } break; - case 113: /* selectnowith ::= oneselect */ - case 119: /* oneselect ::= values */ yytestcase(yyruleno==119); -{yygotominor.yy3 = yymsp[0].minor.yy3;} - break; - case 114: /* selectnowith ::= selectnowith multiselect_op oneselect */ + case 81: /* selectnowith ::= selectnowith multiselect_op oneselect */ { - if( yymsp[0].minor.yy3 ){ - yymsp[0].minor.yy3->op = (u8)yymsp[-1].minor.yy328; - yymsp[0].minor.yy3->pPrior = yymsp[-2].minor.yy3; - if( yymsp[-1].minor.yy328!=TK_ALL ) pParse->hasCompound = 1; + Select *pRhs = yymsp[0].minor.yy243; + Select *pLhs = yymsp[-2].minor.yy243; + if( pRhs && pRhs->pPrior ){ + SrcList *pFrom; + Token x; + x.n = 0; + parserDoubleLinkSelect(pParse, pRhs); + pFrom = sqlite3SrcListAppendFromTerm(pParse,0,0,0,&x,pRhs,0,0); + pRhs = sqlite3SelectNew(pParse,0,pFrom,0,0,0,0,0,0,0); + } + if( pRhs ){ + pRhs->op = (u8)yymsp[-1].minor.yy194; + pRhs->pPrior = pLhs; + if( ALWAYS(pLhs) ) pLhs->selFlags &= ~SF_MultiValue; + pRhs->selFlags &= ~SF_MultiValue; + if( yymsp[-1].minor.yy194!=TK_ALL ) pParse->hasCompound = 1; }else{ - sqlite3SelectDelete(pParse->db, yymsp[-2].minor.yy3); + sqlite3SelectDelete(pParse->db, pLhs); } - yygotominor.yy3 = yymsp[0].minor.yy3; + yymsp[-2].minor.yy243 = pRhs; } break; - case 116: /* multiselect_op ::= UNION ALL */ -{yygotominor.yy328 = TK_ALL;} + case 82: /* multiselect_op ::= UNION */ + case 84: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==84); +{yymsp[0].minor.yy194 = yymsp[0].major; /*A-overwrites-OP*/} break; - case 118: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ + case 83: /* multiselect_op ::= UNION ALL */ +{yymsp[-1].minor.yy194 = TK_ALL;} + break; + case 85: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */ { - yygotominor.yy3 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy14,yymsp[-5].minor.yy65,yymsp[-4].minor.yy132,yymsp[-3].minor.yy14,yymsp[-2].minor.yy132,yymsp[-1].minor.yy14,yymsp[-7].minor.yy381,yymsp[0].minor.yy476.pLimit,yymsp[0].minor.yy476.pOffset); +#if SELECTTRACE_ENABLED + Token s = yymsp[-8].minor.yy0; /*A-overwrites-S*/ +#endif + yymsp[-8].minor.yy243 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy148,yymsp[-5].minor.yy185,yymsp[-4].minor.yy72,yymsp[-3].minor.yy148,yymsp[-2].minor.yy72,yymsp[-1].minor.yy148,yymsp[-7].minor.yy194,yymsp[0].minor.yy354.pLimit,yymsp[0].minor.yy354.pOffset); +#if SELECTTRACE_ENABLED + /* Populate the Select.zSelName[] string that is used to help with + ** query planner debugging, to differentiate between multiple Select + ** objects in a complex query. + ** + ** If the SELECT keyword is immediately followed by a C-style comment + ** then extract the first few alphanumeric characters from within that + ** comment to be the zSelName value. Otherwise, the label is #N where + ** is an integer that is incremented with each SELECT statement seen. + */ + if( yymsp[-8].minor.yy243!=0 ){ + const char *z = s.z+6; + int i; + sqlite3_snprintf(sizeof(yymsp[-8].minor.yy243->zSelName), yymsp[-8].minor.yy243->zSelName, "#%d", + ++pParse->nSelect); + while( z[0]==' ' ) z++; + if( z[0]=='/' && z[1]=='*' ){ + z += 2; + while( z[0]==' ' ) z++; + for(i=0; sqlite3Isalnum(z[i]); i++){} + sqlite3_snprintf(sizeof(yymsp[-8].minor.yy243->zSelName), yymsp[-8].minor.yy243->zSelName, "%.*s", i, z); + } + } +#endif /* SELECTRACE_ENABLED */ } break; - case 120: /* values ::= VALUES LP nexprlist RP */ + case 86: /* values ::= VALUES LP nexprlist RP */ { - yygotominor.yy3 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy14,0,0,0,0,0,SF_Values,0,0); + yymsp[-3].minor.yy243 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy148,0,0,0,0,0,SF_Values,0,0); } break; - case 121: /* values ::= values COMMA LP exprlist RP */ + case 87: /* values ::= values COMMA LP exprlist RP */ { - Select *pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy14,0,0,0,0,0,SF_Values,0,0); + Select *pRight, *pLeft = yymsp[-4].minor.yy243; + pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy148,0,0,0,0,0,SF_Values|SF_MultiValue,0,0); + if( ALWAYS(pLeft) ) pLeft->selFlags &= ~SF_MultiValue; if( pRight ){ pRight->op = TK_ALL; - pRight->pPrior = yymsp[-4].minor.yy3; - yygotominor.yy3 = pRight; + pRight->pPrior = pLeft; + yymsp[-4].minor.yy243 = pRight; }else{ - yygotominor.yy3 = yymsp[-4].minor.yy3; + yymsp[-4].minor.yy243 = pLeft; } } break; - case 122: /* distinct ::= DISTINCT */ -{yygotominor.yy381 = SF_Distinct;} + case 88: /* distinct ::= DISTINCT */ +{yymsp[0].minor.yy194 = SF_Distinct;} break; - case 123: /* distinct ::= ALL */ - case 124: /* distinct ::= */ yytestcase(yyruleno==124); -{yygotominor.yy381 = 0;} + case 89: /* distinct ::= ALL */ +{yymsp[0].minor.yy194 = SF_All;} break; - case 125: /* sclp ::= selcollist COMMA */ - case 243: /* idxlist_opt ::= LP idxlist RP */ yytestcase(yyruleno==243); -{yygotominor.yy14 = yymsp[-1].minor.yy14;} + case 91: /* sclp ::= */ + case 119: /* orderby_opt ::= */ yytestcase(yyruleno==119); + case 126: /* groupby_opt ::= */ yytestcase(yyruleno==126); + case 203: /* exprlist ::= */ yytestcase(yyruleno==203); + case 206: /* paren_exprlist ::= */ yytestcase(yyruleno==206); + case 211: /* eidlist_opt ::= */ yytestcase(yyruleno==211); +{yymsp[1].minor.yy148 = 0;} break; - case 126: /* sclp ::= */ - case 154: /* orderby_opt ::= */ yytestcase(yyruleno==154); - case 161: /* groupby_opt ::= */ yytestcase(yyruleno==161); - case 236: /* exprlist ::= */ yytestcase(yyruleno==236); - case 242: /* idxlist_opt ::= */ yytestcase(yyruleno==242); -{yygotominor.yy14 = 0;} - break; - case 127: /* selcollist ::= sclp expr as */ + case 92: /* selcollist ::= sclp expr as */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy14, yymsp[-1].minor.yy346.pExpr); - if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[0].minor.yy0, 1); - sqlite3ExprListSetSpan(pParse,yygotominor.yy14,&yymsp[-1].minor.yy346); + yymsp[-2].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy148, yymsp[-1].minor.yy190.pExpr); + if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-2].minor.yy148, &yymsp[0].minor.yy0, 1); + sqlite3ExprListSetSpan(pParse,yymsp[-2].minor.yy148,&yymsp[-1].minor.yy190); } break; - case 128: /* selcollist ::= sclp STAR */ + case 93: /* selcollist ::= sclp STAR */ { - Expr *p = sqlite3Expr(pParse->db, TK_ALL, 0); - yygotominor.yy14 = sqlite3ExprListAppend(pParse, yymsp[-1].minor.yy14, p); + Expr *p = sqlite3Expr(pParse->db, TK_ASTERISK, 0); + yymsp[-1].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-1].minor.yy148, p); } break; - case 129: /* selcollist ::= sclp nm DOT STAR */ + case 94: /* selcollist ::= sclp nm DOT STAR */ { - Expr *pRight = sqlite3PExpr(pParse, TK_ALL, 0, 0, &yymsp[0].minor.yy0); - Expr *pLeft = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-2].minor.yy0); - Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy14, pDot); + Expr *pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0); + Expr *pLeft = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); + Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight); + yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148, pDot); } break; - case 132: /* as ::= */ -{yygotominor.yy0.n = 0;} + case 95: /* as ::= AS nm */ + case 106: /* dbnm ::= DOT nm */ yytestcase(yyruleno==106); + case 225: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==225); + case 226: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==226); +{yymsp[-1].minor.yy0 = yymsp[0].minor.yy0;} break; - case 133: /* from ::= */ -{yygotominor.yy65 = sqlite3DbMallocZero(pParse->db, sizeof(*yygotominor.yy65));} + case 97: /* from ::= */ +{yymsp[1].minor.yy185 = sqlite3DbMallocZero(pParse->db, sizeof(*yymsp[1].minor.yy185));} break; - case 134: /* from ::= FROM seltablist */ + case 98: /* from ::= FROM seltablist */ { - yygotominor.yy65 = yymsp[0].minor.yy65; - sqlite3SrcListShiftJoinType(yygotominor.yy65); + yymsp[-1].minor.yy185 = yymsp[0].minor.yy185; + sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy185); } break; - case 135: /* stl_prefix ::= seltablist joinop */ + case 99: /* stl_prefix ::= seltablist joinop */ { - yygotominor.yy65 = yymsp[-1].minor.yy65; - if( ALWAYS(yygotominor.yy65 && yygotominor.yy65->nSrc>0) ) yygotominor.yy65->a[yygotominor.yy65->nSrc-1].jointype = (u8)yymsp[0].minor.yy328; + if( ALWAYS(yymsp[-1].minor.yy185 && yymsp[-1].minor.yy185->nSrc>0) ) yymsp[-1].minor.yy185->a[yymsp[-1].minor.yy185->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy194; } break; - case 136: /* stl_prefix ::= */ -{yygotominor.yy65 = 0;} + case 100: /* stl_prefix ::= */ +{yymsp[1].minor.yy185 = 0;} break; - case 137: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */ + case 101: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */ { - yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); - sqlite3SrcListIndexedBy(pParse, yygotominor.yy65, &yymsp[-2].minor.yy0); + yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254); + sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy185, &yymsp[-2].minor.yy0); } break; - case 138: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */ + case 102: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */ { - yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy3,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); + yymsp[-8].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy185,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254); + sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy185, yymsp[-4].minor.yy148); +} + break; + case 103: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */ +{ + yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy243,yymsp[-1].minor.yy72,yymsp[0].minor.yy254); } break; - case 139: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ + case 104: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ { - if( yymsp[-6].minor.yy65==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy132==0 && yymsp[0].minor.yy408==0 ){ - yygotominor.yy65 = yymsp[-4].minor.yy65; - }else if( yymsp[-4].minor.yy65->nSrc==1 ){ - yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); - if( yygotominor.yy65 ){ - struct SrcList_item *pNew = &yygotominor.yy65->a[yygotominor.yy65->nSrc-1]; - struct SrcList_item *pOld = yymsp[-4].minor.yy65->a; + if( yymsp[-6].minor.yy185==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy72==0 && yymsp[0].minor.yy254==0 ){ + yymsp[-6].minor.yy185 = yymsp[-4].minor.yy185; + }else if( yymsp[-4].minor.yy185->nSrc==1 ){ + yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy72,yymsp[0].minor.yy254); + if( yymsp[-6].minor.yy185 ){ + struct SrcList_item *pNew = &yymsp[-6].minor.yy185->a[yymsp[-6].minor.yy185->nSrc-1]; + struct SrcList_item *pOld = yymsp[-4].minor.yy185->a; pNew->zName = pOld->zName; pNew->zDatabase = pOld->zDatabase; pNew->pSelect = pOld->pSelect; pOld->zName = pOld->zDatabase = 0; pOld->pSelect = 0; } - sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy65); + sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy185); }else{ Select *pSubquery; - sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy65); - pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy65,0,0,0,0,SF_NestedFrom,0,0); - yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); + sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy185); + pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy185,0,0,0,0,SF_NestedFrom,0,0); + yymsp[-6].minor.yy185 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy185,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy72,yymsp[0].minor.yy254); } } break; - case 140: /* dbnm ::= */ - case 149: /* indexed_opt ::= */ yytestcase(yyruleno==149); -{yygotominor.yy0.z=0; yygotominor.yy0.n=0;} + case 105: /* dbnm ::= */ + case 114: /* indexed_opt ::= */ yytestcase(yyruleno==114); +{yymsp[1].minor.yy0.z=0; yymsp[1].minor.yy0.n=0;} break; - case 142: /* fullname ::= nm dbnm */ -{yygotominor.yy65 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);} + case 107: /* fullname ::= nm dbnm */ +{yymsp[-1].minor.yy185 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/} break; - case 143: /* joinop ::= COMMA|JOIN */ -{ yygotominor.yy328 = JT_INNER; } + case 108: /* joinop ::= COMMA|JOIN */ +{ yymsp[0].minor.yy194 = JT_INNER; } break; - case 144: /* joinop ::= JOIN_KW JOIN */ -{ yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0); } + case 109: /* joinop ::= JOIN_KW JOIN */ +{yymsp[-1].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0); /*X-overwrites-A*/} break; - case 145: /* joinop ::= JOIN_KW nm JOIN */ -{ yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); } + case 110: /* joinop ::= JOIN_KW nm JOIN */ +{yymsp[-2].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/} break; - case 146: /* joinop ::= JOIN_KW nm nm JOIN */ -{ yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0); } + case 111: /* joinop ::= JOIN_KW nm nm JOIN */ +{yymsp[-3].minor.yy194 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/} break; - case 147: /* on_opt ::= ON expr */ - case 164: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==164); - case 171: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==171); - case 231: /* case_else ::= ELSE expr */ yytestcase(yyruleno==231); - case 233: /* case_operand ::= expr */ yytestcase(yyruleno==233); -{yygotominor.yy132 = yymsp[0].minor.yy346.pExpr;} + case 112: /* on_opt ::= ON expr */ + case 129: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==129); + case 136: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==136); + case 199: /* case_else ::= ELSE expr */ yytestcase(yyruleno==199); +{yymsp[-1].minor.yy72 = yymsp[0].minor.yy190.pExpr;} break; - case 148: /* on_opt ::= */ - case 163: /* having_opt ::= */ yytestcase(yyruleno==163); - case 170: /* where_opt ::= */ yytestcase(yyruleno==170); - case 232: /* case_else ::= */ yytestcase(yyruleno==232); - case 234: /* case_operand ::= */ yytestcase(yyruleno==234); -{yygotominor.yy132 = 0;} + case 113: /* on_opt ::= */ + case 128: /* having_opt ::= */ yytestcase(yyruleno==128); + case 135: /* where_opt ::= */ yytestcase(yyruleno==135); + case 200: /* case_else ::= */ yytestcase(yyruleno==200); + case 202: /* case_operand ::= */ yytestcase(yyruleno==202); +{yymsp[1].minor.yy72 = 0;} break; - case 151: /* indexed_opt ::= NOT INDEXED */ -{yygotominor.yy0.z=0; yygotominor.yy0.n=1;} + case 115: /* indexed_opt ::= INDEXED BY nm */ +{yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;} break; - case 152: /* using_opt ::= USING LP idlist RP */ - case 180: /* inscollist_opt ::= LP idlist RP */ yytestcase(yyruleno==180); -{yygotominor.yy408 = yymsp[-1].minor.yy408;} + case 116: /* indexed_opt ::= NOT INDEXED */ +{yymsp[-1].minor.yy0.z=0; yymsp[-1].minor.yy0.n=1;} break; - case 153: /* using_opt ::= */ - case 179: /* inscollist_opt ::= */ yytestcase(yyruleno==179); -{yygotominor.yy408 = 0;} + case 117: /* using_opt ::= USING LP idlist RP */ +{yymsp[-3].minor.yy254 = yymsp[-1].minor.yy254;} break; - case 155: /* orderby_opt ::= ORDER BY sortlist */ - case 162: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==162); - case 235: /* exprlist ::= nexprlist */ yytestcase(yyruleno==235); -{yygotominor.yy14 = yymsp[0].minor.yy14;} + case 118: /* using_opt ::= */ + case 146: /* idlist_opt ::= */ yytestcase(yyruleno==146); +{yymsp[1].minor.yy254 = 0;} break; - case 156: /* sortlist ::= sortlist COMMA expr sortorder */ + case 120: /* orderby_opt ::= ORDER BY sortlist */ + case 127: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==127); +{yymsp[-2].minor.yy148 = yymsp[0].minor.yy148;} + break; + case 121: /* sortlist ::= sortlist COMMA expr sortorder */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy14,yymsp[-1].minor.yy346.pExpr); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148,yymsp[-1].minor.yy190.pExpr); + sqlite3ExprListSetSortOrder(yymsp[-3].minor.yy148,yymsp[0].minor.yy194); } break; - case 157: /* sortlist ::= expr sortorder */ + case 122: /* sortlist ::= expr sortorder */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy346.pExpr); - if( yygotominor.yy14 && ALWAYS(yygotominor.yy14->a) ) yygotominor.yy14->a[0].sortOrder = (u8)yymsp[0].minor.yy328; + yymsp[-1].minor.yy148 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy190.pExpr); /*A-overwrites-Y*/ + sqlite3ExprListSetSortOrder(yymsp[-1].minor.yy148,yymsp[0].minor.yy194); } break; - case 158: /* sortorder ::= ASC */ - case 160: /* sortorder ::= */ yytestcase(yyruleno==160); -{yygotominor.yy328 = SQLITE_SO_ASC;} + case 123: /* sortorder ::= ASC */ +{yymsp[0].minor.yy194 = SQLITE_SO_ASC;} break; - case 159: /* sortorder ::= DESC */ -{yygotominor.yy328 = SQLITE_SO_DESC;} + case 124: /* sortorder ::= DESC */ +{yymsp[0].minor.yy194 = SQLITE_SO_DESC;} break; - case 165: /* limit_opt ::= */ -{yygotominor.yy476.pLimit = 0; yygotominor.yy476.pOffset = 0;} + case 125: /* sortorder ::= */ +{yymsp[1].minor.yy194 = SQLITE_SO_UNDEFINED;} break; - case 166: /* limit_opt ::= LIMIT expr */ -{yygotominor.yy476.pLimit = yymsp[0].minor.yy346.pExpr; yygotominor.yy476.pOffset = 0;} + case 130: /* limit_opt ::= */ +{yymsp[1].minor.yy354.pLimit = 0; yymsp[1].minor.yy354.pOffset = 0;} break; - case 167: /* limit_opt ::= LIMIT expr OFFSET expr */ -{yygotominor.yy476.pLimit = yymsp[-2].minor.yy346.pExpr; yygotominor.yy476.pOffset = yymsp[0].minor.yy346.pExpr;} + case 131: /* limit_opt ::= LIMIT expr */ +{yymsp[-1].minor.yy354.pLimit = yymsp[0].minor.yy190.pExpr; yymsp[-1].minor.yy354.pOffset = 0;} break; - case 168: /* limit_opt ::= LIMIT expr COMMA expr */ -{yygotominor.yy476.pOffset = yymsp[-2].minor.yy346.pExpr; yygotominor.yy476.pLimit = yymsp[0].minor.yy346.pExpr;} + case 132: /* limit_opt ::= LIMIT expr OFFSET expr */ +{yymsp[-3].minor.yy354.pLimit = yymsp[-2].minor.yy190.pExpr; yymsp[-3].minor.yy354.pOffset = yymsp[0].minor.yy190.pExpr;} break; - case 169: /* cmd ::= with DELETE FROM fullname indexed_opt where_opt */ + case 133: /* limit_opt ::= LIMIT expr COMMA expr */ +{yymsp[-3].minor.yy354.pOffset = yymsp[-2].minor.yy190.pExpr; yymsp[-3].minor.yy354.pLimit = yymsp[0].minor.yy190.pExpr;} + break; + case 134: /* cmd ::= with DELETE FROM fullname indexed_opt where_opt */ { - sqlite3WithPush(pParse, yymsp[-5].minor.yy59, 1); - sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy65, &yymsp[-1].minor.yy0); - sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy65,yymsp[0].minor.yy132); + sqlite3WithPush(pParse, yymsp[-5].minor.yy285, 1); + sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy185, &yymsp[-1].minor.yy0); + sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy185,yymsp[0].minor.yy72); } break; - case 172: /* cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt */ + case 137: /* cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt */ { - sqlite3WithPush(pParse, yymsp[-7].minor.yy59, 1); - sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy65, &yymsp[-3].minor.yy0); - sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy14,"set list"); - sqlite3Update(pParse,yymsp[-4].minor.yy65,yymsp[-1].minor.yy14,yymsp[0].minor.yy132,yymsp[-5].minor.yy186); + sqlite3WithPush(pParse, yymsp[-7].minor.yy285, 1); + sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy185, &yymsp[-3].minor.yy0); + sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy148,"set list"); + sqlite3Update(pParse,yymsp[-4].minor.yy185,yymsp[-1].minor.yy148,yymsp[0].minor.yy72,yymsp[-5].minor.yy194); } break; - case 173: /* setlist ::= setlist COMMA nm EQ expr */ + case 138: /* setlist ::= setlist COMMA nm EQ expr */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy14, yymsp[0].minor.yy346.pExpr); - sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); + yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy148, yymsp[0].minor.yy190.pExpr); + sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy148, &yymsp[-2].minor.yy0, 1); } break; - case 174: /* setlist ::= nm EQ expr */ + case 139: /* setlist ::= setlist COMMA LP idlist RP EQ expr */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy346.pExpr); - sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); + yymsp[-6].minor.yy148 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy148, yymsp[-3].minor.yy254, yymsp[0].minor.yy190.pExpr); } break; - case 175: /* cmd ::= with insert_cmd INTO fullname inscollist_opt select */ + case 140: /* setlist ::= nm EQ expr */ { - sqlite3WithPush(pParse, yymsp[-5].minor.yy59, 1); - sqlite3Insert(pParse, yymsp[-2].minor.yy65, yymsp[0].minor.yy3, yymsp[-1].minor.yy408, yymsp[-4].minor.yy186); + yylhsminor.yy148 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy190.pExpr); + sqlite3ExprListSetName(pParse, yylhsminor.yy148, &yymsp[-2].minor.yy0, 1); +} + yymsp[-2].minor.yy148 = yylhsminor.yy148; + break; + case 141: /* setlist ::= LP idlist RP EQ expr */ +{ + yymsp[-4].minor.yy148 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy254, yymsp[0].minor.yy190.pExpr); } break; - case 176: /* cmd ::= with insert_cmd INTO fullname inscollist_opt DEFAULT VALUES */ + case 142: /* cmd ::= with insert_cmd INTO fullname idlist_opt select */ { - sqlite3WithPush(pParse, yymsp[-6].minor.yy59, 1); - sqlite3Insert(pParse, yymsp[-3].minor.yy65, 0, yymsp[-2].minor.yy408, yymsp[-5].minor.yy186); + sqlite3WithPush(pParse, yymsp[-5].minor.yy285, 1); + sqlite3Insert(pParse, yymsp[-2].minor.yy185, yymsp[0].minor.yy243, yymsp[-1].minor.yy254, yymsp[-4].minor.yy194); } break; - case 177: /* insert_cmd ::= INSERT orconf */ -{yygotominor.yy186 = yymsp[0].minor.yy186;} - break; - case 178: /* insert_cmd ::= REPLACE */ -{yygotominor.yy186 = OE_Replace;} - break; - case 181: /* idlist ::= idlist COMMA nm */ -{yygotominor.yy408 = sqlite3IdListAppend(pParse->db,yymsp[-2].minor.yy408,&yymsp[0].minor.yy0);} - break; - case 182: /* idlist ::= nm */ -{yygotominor.yy408 = sqlite3IdListAppend(pParse->db,0,&yymsp[0].minor.yy0);} - break; - case 183: /* expr ::= term */ -{yygotominor.yy346 = yymsp[0].minor.yy346;} - break; - case 184: /* expr ::= LP expr RP */ -{yygotominor.yy346.pExpr = yymsp[-1].minor.yy346.pExpr; spanSet(&yygotominor.yy346,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0);} - break; - case 185: /* term ::= NULL */ - case 190: /* term ::= INTEGER|FLOAT|BLOB */ yytestcase(yyruleno==190); - case 191: /* term ::= STRING */ yytestcase(yyruleno==191); -{spanExpr(&yygotominor.yy346, pParse, yymsp[0].major, &yymsp[0].minor.yy0);} - break; - case 186: /* expr ::= ID|INDEXED */ - case 187: /* expr ::= JOIN_KW */ yytestcase(yyruleno==187); -{spanExpr(&yygotominor.yy346, pParse, TK_ID, &yymsp[0].minor.yy0);} - break; - case 188: /* expr ::= nm DOT nm */ + case 143: /* cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES */ { - Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-2].minor.yy0); - Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[0].minor.yy0); - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp2, 0); - spanSet(&yygotominor.yy346,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); + sqlite3WithPush(pParse, yymsp[-6].minor.yy285, 1); + sqlite3Insert(pParse, yymsp[-3].minor.yy185, 0, yymsp[-2].minor.yy254, yymsp[-5].minor.yy194); } break; - case 189: /* expr ::= nm DOT nm DOT nm */ + case 147: /* idlist_opt ::= LP idlist RP */ +{yymsp[-2].minor.yy254 = yymsp[-1].minor.yy254;} + break; + case 148: /* idlist ::= idlist COMMA nm */ +{yymsp[-2].minor.yy254 = sqlite3IdListAppend(pParse->db,yymsp[-2].minor.yy254,&yymsp[0].minor.yy0);} + break; + case 149: /* idlist ::= nm */ +{yymsp[0].minor.yy254 = sqlite3IdListAppend(pParse->db,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/} + break; + case 150: /* expr ::= LP expr RP */ +{spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/ yymsp[-2].minor.yy190.pExpr = yymsp[-1].minor.yy190.pExpr;} + break; + case 151: /* term ::= NULL */ + case 156: /* term ::= FLOAT|BLOB */ yytestcase(yyruleno==156); + case 157: /* term ::= STRING */ yytestcase(yyruleno==157); +{spanExpr(&yymsp[0].minor.yy190,pParse,yymsp[0].major,yymsp[0].minor.yy0);/*A-overwrites-X*/} + break; + case 152: /* expr ::= ID|INDEXED */ + case 153: /* expr ::= JOIN_KW */ yytestcase(yyruleno==153); +{spanExpr(&yymsp[0].minor.yy190,pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/} + break; + case 154: /* expr ::= nm DOT nm */ { - Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-4].minor.yy0); - Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-2].minor.yy0); - Expr *temp3 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[0].minor.yy0); - Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3, 0); - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp4, 0); - spanSet(&yygotominor.yy346,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); + Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); + Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1); + spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/ + yymsp[-2].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp2); } break; - case 192: /* expr ::= VARIABLE */ + case 155: /* expr ::= nm DOT nm DOT nm */ { - if( yymsp[0].minor.yy0.n>=2 && yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1]) ){ + Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-4].minor.yy0, 1); + Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1); + Expr *temp3 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1); + Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3); + spanSet(&yymsp[-4].minor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/ + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp4); +} + break; + case 158: /* term ::= INTEGER */ +{ + yylhsminor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1); + yylhsminor.yy190.zStart = yymsp[0].minor.yy0.z; + yylhsminor.yy190.zEnd = yymsp[0].minor.yy0.z + yymsp[0].minor.yy0.n; + if( yylhsminor.yy190.pExpr ) yylhsminor.yy190.pExpr->flags |= EP_Leaf; +} + yymsp[0].minor.yy190 = yylhsminor.yy190; + break; + case 159: /* expr ::= VARIABLE */ +{ + if( !(yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1])) ){ + u32 n = yymsp[0].minor.yy0.n; + spanExpr(&yymsp[0].minor.yy190, pParse, TK_VARIABLE, yymsp[0].minor.yy0); + sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy190.pExpr, n); + }else{ /* When doing a nested parse, one can include terms in an expression ** that look like this: #1 #2 ... These terms refer to registers ** in the virtual machine. #N is the N-th register. */ + Token t = yymsp[0].minor.yy0; /*A-overwrites-X*/ + assert( t.n>=2 ); + spanSet(&yymsp[0].minor.yy190, &t, &t); if( pParse->nested==0 ){ - sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &yymsp[0].minor.yy0); - yygotominor.yy346.pExpr = 0; + sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &t); + yymsp[0].minor.yy190.pExpr = 0; }else{ - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_REGISTER, 0, 0, &yymsp[0].minor.yy0); - if( yygotominor.yy346.pExpr ) sqlite3GetInt32(&yymsp[0].minor.yy0.z[1], &yygotominor.yy346.pExpr->iTable); + yymsp[0].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_REGISTER, 0, 0); + if( yymsp[0].minor.yy190.pExpr ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy190.pExpr->iTable); } - }else{ - spanExpr(&yygotominor.yy346, pParse, TK_VARIABLE, &yymsp[0].minor.yy0); - sqlite3ExprAssignVarNumber(pParse, yygotominor.yy346.pExpr); } - spanSet(&yygotominor.yy346, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0); } break; - case 193: /* expr ::= expr COLLATE ID|STRING */ + case 160: /* expr ::= expr COLLATE ID|STRING */ { - yygotominor.yy346.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy346.pExpr, &yymsp[0].minor.yy0); - yygotominor.yy346.zStart = yymsp[-2].minor.yy346.zStart; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; + yymsp[-2].minor.yy190.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy190.pExpr, &yymsp[0].minor.yy0, 1); + yymsp[-2].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 194: /* expr ::= CAST LP expr AS typetoken RP */ + case 161: /* expr ::= CAST LP expr AS typetoken RP */ { - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_CAST, yymsp[-3].minor.yy346.pExpr, 0, &yymsp[-1].minor.yy0); - spanSet(&yygotominor.yy346,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0); + spanSet(&yymsp[-5].minor.yy190,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/ + yymsp[-5].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1); + sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy190.pExpr, yymsp[-3].minor.yy190.pExpr, 0); } break; - case 195: /* expr ::= ID|INDEXED LP distinct exprlist RP */ + case 162: /* expr ::= ID|INDEXED LP distinct exprlist RP */ { - if( yymsp[-1].minor.yy14 && yymsp[-1].minor.yy14->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){ + if( yymsp[-1].minor.yy148 && yymsp[-1].minor.yy148->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){ sqlite3ErrorMsg(pParse, "too many arguments on function %T", &yymsp[-4].minor.yy0); } - yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy14, &yymsp[-4].minor.yy0); - spanSet(&yygotominor.yy346,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); - if( yymsp[-2].minor.yy381 && yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->flags |= EP_Distinct; + yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy148, &yymsp[-4].minor.yy0); + spanSet(&yylhsminor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); + if( yymsp[-2].minor.yy194==SF_Distinct && yylhsminor.yy190.pExpr ){ + yylhsminor.yy190.pExpr->flags |= EP_Distinct; } } + yymsp[-4].minor.yy190 = yylhsminor.yy190; break; - case 196: /* expr ::= ID|INDEXED LP STAR RP */ + case 163: /* expr ::= ID|INDEXED LP STAR RP */ { - yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0); - spanSet(&yygotominor.yy346,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); + yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0); + spanSet(&yylhsminor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); } + yymsp[-3].minor.yy190 = yylhsminor.yy190; break; - case 197: /* term ::= CTIME_KW */ + case 164: /* term ::= CTIME_KW */ { - yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0); - spanSet(&yygotominor.yy346, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0); + yylhsminor.yy190.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0); + spanSet(&yylhsminor.yy190, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0); } + yymsp[0].minor.yy190 = yylhsminor.yy190; break; - case 198: /* expr ::= expr AND expr */ - case 199: /* expr ::= expr OR expr */ yytestcase(yyruleno==199); - case 200: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==200); - case 201: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==201); - case 202: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==202); - case 203: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==203); - case 204: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==204); - case 205: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==205); -{spanBinaryExpr(&yygotominor.yy346,pParse,yymsp[-1].major,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy346);} + case 165: /* expr ::= LP nexprlist COMMA expr RP */ +{ + ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy148, yymsp[-1].minor.yy190.pExpr); + yylhsminor.yy190.pExpr = sqlite3PExpr(pParse, TK_VECTOR, 0, 0); + if( yylhsminor.yy190.pExpr ){ + yylhsminor.yy190.pExpr->x.pList = pList; + spanSet(&yylhsminor.yy190, &yymsp[-4].minor.yy0, &yymsp[0].minor.yy0); + }else{ + sqlite3ExprListDelete(pParse->db, pList); + } +} + yymsp[-4].minor.yy190 = yylhsminor.yy190; break; - case 206: /* likeop ::= LIKE_KW|MATCH */ -{yygotominor.yy96.eOperator = yymsp[0].minor.yy0; yygotominor.yy96.bNot = 0;} + case 166: /* expr ::= expr AND expr */ + case 167: /* expr ::= expr OR expr */ yytestcase(yyruleno==167); + case 168: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==168); + case 169: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==169); + case 170: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==170); + case 171: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==171); + case 172: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==172); + case 173: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==173); +{spanBinaryExpr(pParse,yymsp[-1].major,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy190);} break; - case 207: /* likeop ::= NOT LIKE_KW|MATCH */ -{yygotominor.yy96.eOperator = yymsp[0].minor.yy0; yygotominor.yy96.bNot = 1;} + case 174: /* likeop ::= LIKE_KW|MATCH */ +{yymsp[0].minor.yy0=yymsp[0].minor.yy0;/*A-overwrites-X*/} break; - case 208: /* expr ::= expr likeop expr */ + case 175: /* likeop ::= NOT LIKE_KW|MATCH */ +{yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.n|=0x80000000; /*yymsp[-1].minor.yy0-overwrite-yymsp[0].minor.yy0*/} + break; + case 176: /* expr ::= expr likeop expr */ { ExprList *pList; - pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy346.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy346.pExpr); - yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy96.eOperator); - if( yymsp[-1].minor.yy96.bNot ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - yygotominor.yy346.zStart = yymsp[-2].minor.yy346.zStart; - yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd; - if( yygotominor.yy346.pExpr ) yygotominor.yy346.pExpr->flags |= EP_InfixFunc; + int bNot = yymsp[-1].minor.yy0.n & 0x80000000; + yymsp[-1].minor.yy0.n &= 0x7fffffff; + pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy190.pExpr); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy190.pExpr); + yymsp[-2].minor.yy190.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0); + exprNot(pParse, bNot, &yymsp[-2].minor.yy190); + yymsp[-2].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd; + if( yymsp[-2].minor.yy190.pExpr ) yymsp[-2].minor.yy190.pExpr->flags |= EP_InfixFunc; } break; - case 209: /* expr ::= expr likeop expr ESCAPE expr */ + case 177: /* expr ::= expr likeop expr ESCAPE expr */ { ExprList *pList; - pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy346.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy346.pExpr); - yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy96.eOperator); - if( yymsp[-3].minor.yy96.bNot ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart; - yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd; - if( yygotominor.yy346.pExpr ) yygotominor.yy346.pExpr->flags |= EP_InfixFunc; + int bNot = yymsp[-3].minor.yy0.n & 0x80000000; + yymsp[-3].minor.yy0.n &= 0x7fffffff; + pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy190.pExpr); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy190.pExpr); + yymsp[-4].minor.yy190.pExpr = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0); + exprNot(pParse, bNot, &yymsp[-4].minor.yy190); + yymsp[-4].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd; + if( yymsp[-4].minor.yy190.pExpr ) yymsp[-4].minor.yy190.pExpr->flags |= EP_InfixFunc; } break; - case 210: /* expr ::= expr ISNULL|NOTNULL */ -{spanUnaryPostfix(&yygotominor.yy346,pParse,yymsp[0].major,&yymsp[-1].minor.yy346,&yymsp[0].minor.yy0);} + case 178: /* expr ::= expr ISNULL|NOTNULL */ +{spanUnaryPostfix(pParse,yymsp[0].major,&yymsp[-1].minor.yy190,&yymsp[0].minor.yy0);} break; - case 211: /* expr ::= expr NOT NULL */ -{spanUnaryPostfix(&yygotominor.yy346,pParse,TK_NOTNULL,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy0);} + case 179: /* expr ::= expr NOT NULL */ +{spanUnaryPostfix(pParse,TK_NOTNULL,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy0);} break; - case 212: /* expr ::= expr IS expr */ + case 180: /* expr ::= expr IS expr */ { - spanBinaryExpr(&yygotominor.yy346,pParse,TK_IS,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy346); - binaryToUnaryIfNull(pParse, yymsp[0].minor.yy346.pExpr, yygotominor.yy346.pExpr, TK_ISNULL); + spanBinaryExpr(pParse,TK_IS,&yymsp[-2].minor.yy190,&yymsp[0].minor.yy190); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy190.pExpr, yymsp[-2].minor.yy190.pExpr, TK_ISNULL); } break; - case 213: /* expr ::= expr IS NOT expr */ + case 181: /* expr ::= expr IS NOT expr */ { - spanBinaryExpr(&yygotominor.yy346,pParse,TK_ISNOT,&yymsp[-3].minor.yy346,&yymsp[0].minor.yy346); - binaryToUnaryIfNull(pParse, yymsp[0].minor.yy346.pExpr, yygotominor.yy346.pExpr, TK_NOTNULL); + spanBinaryExpr(pParse,TK_ISNOT,&yymsp[-3].minor.yy190,&yymsp[0].minor.yy190); + binaryToUnaryIfNull(pParse, yymsp[0].minor.yy190.pExpr, yymsp[-3].minor.yy190.pExpr, TK_NOTNULL); } break; - case 214: /* expr ::= NOT expr */ - case 215: /* expr ::= BITNOT expr */ yytestcase(yyruleno==215); -{spanUnaryPrefix(&yygotominor.yy346,pParse,yymsp[-1].major,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} + case 182: /* expr ::= NOT expr */ + case 183: /* expr ::= BITNOT expr */ yytestcase(yyruleno==183); +{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,yymsp[-1].major,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/} break; - case 216: /* expr ::= MINUS expr */ -{spanUnaryPrefix(&yygotominor.yy346,pParse,TK_UMINUS,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} + case 184: /* expr ::= MINUS expr */ +{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,TK_UMINUS,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/} break; - case 217: /* expr ::= PLUS expr */ -{spanUnaryPrefix(&yygotominor.yy346,pParse,TK_UPLUS,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} + case 185: /* expr ::= PLUS expr */ +{spanUnaryPrefix(&yymsp[-1].minor.yy190,pParse,TK_UPLUS,&yymsp[0].minor.yy190,&yymsp[-1].minor.yy0);/*A-overwrites-B*/} break; - case 220: /* expr ::= expr between_op expr AND expr */ + case 186: /* between_op ::= BETWEEN */ + case 189: /* in_op ::= IN */ yytestcase(yyruleno==189); +{yymsp[0].minor.yy194 = 0;} + break; + case 188: /* expr ::= expr between_op expr AND expr */ { - ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy346.pExpr); - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy346.pExpr, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pList = pList; + ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr); + pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy190.pExpr); + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy190.pExpr, 0); + if( yymsp[-4].minor.yy190.pExpr ){ + yymsp[-4].minor.yy190.pExpr->x.pList = pList; }else{ sqlite3ExprListDelete(pParse->db, pList); } - if( yymsp[-3].minor.yy328 ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart; - yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd; + exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190); + yymsp[-4].minor.yy190.zEnd = yymsp[0].minor.yy190.zEnd; } break; - case 223: /* expr ::= expr in_op LP exprlist RP */ + case 191: /* expr ::= expr in_op LP exprlist RP */ { - if( yymsp[-1].minor.yy14==0 ){ + if( yymsp[-1].minor.yy148==0 ){ /* Expressions of the form ** ** expr1 IN () @@ -117627,425 +137447,438 @@ static void yy_reduce( ** simplify to constants 0 (false) and 1 (true), respectively, ** regardless of the value of expr1. */ - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, &sqlite3IntTokens[yymsp[-3].minor.yy328]); - sqlite3ExprDelete(pParse->db, yymsp[-4].minor.yy346.pExpr); - }else{ - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy346.pExpr, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pList = yymsp[-1].minor.yy14; - sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr); - }else{ - sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy14); + sqlite3ExprDelete(pParse->db, yymsp[-4].minor.yy190.pExpr); + yymsp[-4].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_INTEGER,&sqlite3IntTokens[yymsp[-3].minor.yy194],1); + }else if( yymsp[-1].minor.yy148->nExpr==1 ){ + /* Expressions of the form: + ** + ** expr1 IN (?1) + ** expr1 NOT IN (?2) + ** + ** with exactly one value on the RHS can be simplified to something + ** like this: + ** + ** expr1 == ?1 + ** expr1 <> ?2 + ** + ** But, the RHS of the == or <> is marked with the EP_Generic flag + ** so that it may not contribute to the computation of comparison + ** affinity or the collating sequence to use for comparison. Otherwise, + ** the semantics would be subtly different from IN or NOT IN. + */ + Expr *pRHS = yymsp[-1].minor.yy148->a[0].pExpr; + yymsp[-1].minor.yy148->a[0].pExpr = 0; + sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy148); + /* pRHS cannot be NULL because a malloc error would have been detected + ** before now and control would have never reached this point */ + if( ALWAYS(pRHS) ){ + pRHS->flags &= ~EP_Collate; + pRHS->flags |= EP_Generic; } - if( yymsp[-3].minor.yy328 ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - } - yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; - } - break; - case 224: /* expr ::= LP select RP */ -{ - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pSelect = yymsp[-1].minor.yy3; - ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr); + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, yymsp[-3].minor.yy194 ? TK_NE : TK_EQ, yymsp[-4].minor.yy190.pExpr, pRHS); }else{ - sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3); + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0); + if( yymsp[-4].minor.yy190.pExpr ){ + yymsp[-4].minor.yy190.pExpr->x.pList = yymsp[-1].minor.yy148; + sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy190.pExpr); + }else{ + sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy148); + } + exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190); } - yygotominor.yy346.zStart = yymsp[-2].minor.yy0.z; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; + yymsp[-4].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 225: /* expr ::= expr in_op LP select RP */ + case 192: /* expr ::= LP select RP */ { - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy346.pExpr, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pSelect = yymsp[-1].minor.yy3; - ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr); - }else{ - sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3); - } - if( yymsp[-3].minor.yy328 ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; + spanSet(&yymsp[-2].minor.yy190,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/ + yymsp[-2].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0); + sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy190.pExpr, yymsp[-1].minor.yy243); } break; - case 226: /* expr ::= expr in_op nm dbnm */ + case 193: /* expr ::= expr in_op LP select RP */ { - SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0); - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-3].minor.yy346.pExpr, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0); - ExprSetProperty(yygotominor.yy346.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr); - }else{ - sqlite3SrcListDelete(pParse->db, pSrc); - } - if( yymsp[-2].minor.yy328 ) yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_NOT, yygotominor.yy346.pExpr, 0, 0); - yygotominor.yy346.zStart = yymsp[-3].minor.yy346.zStart; - yygotominor.yy346.zEnd = yymsp[0].minor.yy0.z ? &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] : &yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]; + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy190.pExpr, yymsp[-1].minor.yy243); + exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190); + yymsp[-4].minor.yy190.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 227: /* expr ::= EXISTS LP select RP */ + case 194: /* expr ::= expr in_op nm dbnm paren_exprlist */ { - Expr *p = yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0, 0); - if( p ){ - p->x.pSelect = yymsp[-1].minor.yy3; - ExprSetProperty(p, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, p); - }else{ - sqlite3SelectDelete(pParse->db, yymsp[-1].minor.yy3); - } - yygotominor.yy346.zStart = yymsp[-3].minor.yy0.z; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; + SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0); + Select *pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0); + if( yymsp[0].minor.yy148 ) sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy148); + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy190.pExpr, 0); + sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy190.pExpr, pSelect); + exprNot(pParse, yymsp[-3].minor.yy194, &yymsp[-4].minor.yy190); + yymsp[-4].minor.yy190.zEnd = yymsp[-1].minor.yy0.z ? &yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n] : &yymsp[-2].minor.yy0.z[yymsp[-2].minor.yy0.n]; } break; - case 228: /* expr ::= CASE case_operand case_exprlist case_else END */ + case 195: /* expr ::= EXISTS LP select RP */ { - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy132, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->x.pList = yymsp[-1].minor.yy132 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy14,yymsp[-1].minor.yy132) : yymsp[-2].minor.yy14; - sqlite3ExprSetHeight(pParse, yygotominor.yy346.pExpr); + Expr *p; + spanSet(&yymsp[-3].minor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-B*/ + p = yymsp[-3].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0); + sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy243); + } + break; + case 196: /* expr ::= CASE case_operand case_exprlist case_else END */ +{ + spanSet(&yymsp[-4].minor.yy190,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-C*/ + yymsp[-4].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy72, 0); + if( yymsp[-4].minor.yy190.pExpr ){ + yymsp[-4].minor.yy190.pExpr->x.pList = yymsp[-1].minor.yy72 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy148,yymsp[-1].minor.yy72) : yymsp[-2].minor.yy148; + sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy190.pExpr); }else{ - sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy14); - sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy132); + sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy148); + sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy72); } - yygotominor.yy346.zStart = yymsp[-4].minor.yy0.z; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 229: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ + case 197: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy14, yymsp[-2].minor.yy346.pExpr); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yygotominor.yy14, yymsp[0].minor.yy346.pExpr); + yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy148, yymsp[-2].minor.yy190.pExpr); + yymsp[-4].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy148, yymsp[0].minor.yy190.pExpr); } break; - case 230: /* case_exprlist ::= WHEN expr THEN expr */ + case 198: /* case_exprlist ::= WHEN expr THEN expr */ { - yygotominor.yy14 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yygotominor.yy14, yymsp[0].minor.yy346.pExpr); + yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy190.pExpr); + yymsp[-3].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy148, yymsp[0].minor.yy190.pExpr); } break; - case 237: /* nexprlist ::= nexprlist COMMA expr */ -{yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy14,yymsp[0].minor.yy346.pExpr);} + case 201: /* case_operand ::= expr */ +{yymsp[0].minor.yy72 = yymsp[0].minor.yy190.pExpr; /*A-overwrites-X*/} break; - case 238: /* nexprlist ::= expr */ -{yygotominor.yy14 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy346.pExpr);} + case 204: /* nexprlist ::= nexprlist COMMA expr */ +{yymsp[-2].minor.yy148 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy148,yymsp[0].minor.yy190.pExpr);} break; - case 239: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP idxlist RP where_opt */ + case 205: /* nexprlist ::= expr */ +{yymsp[0].minor.yy148 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy190.pExpr); /*A-overwrites-Y*/} + break; + case 207: /* paren_exprlist ::= LP exprlist RP */ + case 212: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==212); +{yymsp[-2].minor.yy148 = yymsp[-1].minor.yy148;} + break; + case 208: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ { sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, - sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy14, yymsp[-10].minor.yy328, - &yymsp[-11].minor.yy0, yymsp[0].minor.yy132, SQLITE_SO_ASC, yymsp[-8].minor.yy328); + sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy148, yymsp[-10].minor.yy194, + &yymsp[-11].minor.yy0, yymsp[0].minor.yy72, SQLITE_SO_ASC, yymsp[-8].minor.yy194, SQLITE_IDXTYPE_APPDEF); } break; - case 240: /* uniqueflag ::= UNIQUE */ - case 291: /* raisetype ::= ABORT */ yytestcase(yyruleno==291); -{yygotominor.yy328 = OE_Abort;} + case 209: /* uniqueflag ::= UNIQUE */ + case 250: /* raisetype ::= ABORT */ yytestcase(yyruleno==250); +{yymsp[0].minor.yy194 = OE_Abort;} break; - case 241: /* uniqueflag ::= */ -{yygotominor.yy328 = OE_None;} + case 210: /* uniqueflag ::= */ +{yymsp[1].minor.yy194 = OE_None;} break; - case 244: /* idxlist ::= idxlist COMMA nm collate sortorder */ + case 213: /* eidlist ::= eidlist COMMA nm collate sortorder */ { - Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy14, p); - sqlite3ExprListSetName(pParse,yygotominor.yy14,&yymsp[-2].minor.yy0,1); - sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index"); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + yymsp[-4].minor.yy148 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy148, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy194, yymsp[0].minor.yy194); } break; - case 245: /* idxlist ::= nm collate sortorder */ + case 214: /* eidlist ::= nm collate sortorder */ { - Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,0, p); - sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); - sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index"); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + yymsp[-2].minor.yy148 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy194, yymsp[0].minor.yy194); /*A-overwrites-Y*/ } break; - case 246: /* collate ::= */ -{yygotominor.yy0.z = 0; yygotominor.yy0.n = 0;} + case 217: /* cmd ::= DROP INDEX ifexists fullname */ +{sqlite3DropIndex(pParse, yymsp[0].minor.yy185, yymsp[-1].minor.yy194);} break; - case 248: /* cmd ::= DROP INDEX ifexists fullname */ -{sqlite3DropIndex(pParse, yymsp[0].minor.yy65, yymsp[-1].minor.yy328);} + case 218: /* cmd ::= VACUUM */ +{sqlite3Vacuum(pParse,0);} break; - case 249: /* cmd ::= VACUUM */ - case 250: /* cmd ::= VACUUM nm */ yytestcase(yyruleno==250); -{sqlite3Vacuum(pParse);} + case 219: /* cmd ::= VACUUM nm */ +{sqlite3Vacuum(pParse,&yymsp[0].minor.yy0);} break; - case 251: /* cmd ::= PRAGMA nm dbnm */ + case 220: /* cmd ::= PRAGMA nm dbnm */ {sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);} break; - case 252: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ + case 221: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);} break; - case 253: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ + case 222: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);} break; - case 254: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ + case 223: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);} break; - case 255: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ + case 224: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);} break; - case 264: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ + case 227: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ { Token all; all.z = yymsp[-3].minor.yy0.z; all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n; - sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy473, &all); + sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy145, &all); } break; - case 265: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ + case 228: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ { - sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy328, yymsp[-4].minor.yy378.a, yymsp[-4].minor.yy378.b, yymsp[-2].minor.yy65, yymsp[0].minor.yy132, yymsp[-10].minor.yy328, yymsp[-8].minor.yy328); - yygotominor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); + sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy194, yymsp[-4].minor.yy332.a, yymsp[-4].minor.yy332.b, yymsp[-2].minor.yy185, yymsp[0].minor.yy72, yymsp[-10].minor.yy194, yymsp[-8].minor.yy194); + yymsp[-10].minor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); /*A-overwrites-T*/ } break; - case 266: /* trigger_time ::= BEFORE */ - case 269: /* trigger_time ::= */ yytestcase(yyruleno==269); -{ yygotominor.yy328 = TK_BEFORE; } + case 229: /* trigger_time ::= BEFORE */ +{ yymsp[0].minor.yy194 = TK_BEFORE; } break; - case 267: /* trigger_time ::= AFTER */ -{ yygotominor.yy328 = TK_AFTER; } + case 230: /* trigger_time ::= AFTER */ +{ yymsp[0].minor.yy194 = TK_AFTER; } break; - case 268: /* trigger_time ::= INSTEAD OF */ -{ yygotominor.yy328 = TK_INSTEAD;} + case 231: /* trigger_time ::= INSTEAD OF */ +{ yymsp[-1].minor.yy194 = TK_INSTEAD;} break; - case 270: /* trigger_event ::= DELETE|INSERT */ - case 271: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==271); -{yygotominor.yy378.a = yymsp[0].major; yygotominor.yy378.b = 0;} + case 232: /* trigger_time ::= */ +{ yymsp[1].minor.yy194 = TK_BEFORE; } break; - case 272: /* trigger_event ::= UPDATE OF idlist */ -{yygotominor.yy378.a = TK_UPDATE; yygotominor.yy378.b = yymsp[0].minor.yy408;} + case 233: /* trigger_event ::= DELETE|INSERT */ + case 234: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==234); +{yymsp[0].minor.yy332.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy332.b = 0;} break; - case 275: /* when_clause ::= */ - case 296: /* key_opt ::= */ yytestcase(yyruleno==296); -{ yygotominor.yy132 = 0; } + case 235: /* trigger_event ::= UPDATE OF idlist */ +{yymsp[-2].minor.yy332.a = TK_UPDATE; yymsp[-2].minor.yy332.b = yymsp[0].minor.yy254;} break; - case 276: /* when_clause ::= WHEN expr */ - case 297: /* key_opt ::= KEY expr */ yytestcase(yyruleno==297); -{ yygotominor.yy132 = yymsp[0].minor.yy346.pExpr; } + case 236: /* when_clause ::= */ + case 255: /* key_opt ::= */ yytestcase(yyruleno==255); +{ yymsp[1].minor.yy72 = 0; } break; - case 277: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ + case 237: /* when_clause ::= WHEN expr */ + case 256: /* key_opt ::= KEY expr */ yytestcase(yyruleno==256); +{ yymsp[-1].minor.yy72 = yymsp[0].minor.yy190.pExpr; } + break; + case 238: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ { - assert( yymsp[-2].minor.yy473!=0 ); - yymsp[-2].minor.yy473->pLast->pNext = yymsp[-1].minor.yy473; - yymsp[-2].minor.yy473->pLast = yymsp[-1].minor.yy473; - yygotominor.yy473 = yymsp[-2].minor.yy473; + assert( yymsp[-2].minor.yy145!=0 ); + yymsp[-2].minor.yy145->pLast->pNext = yymsp[-1].minor.yy145; + yymsp[-2].minor.yy145->pLast = yymsp[-1].minor.yy145; } break; - case 278: /* trigger_cmd_list ::= trigger_cmd SEMI */ + case 239: /* trigger_cmd_list ::= trigger_cmd SEMI */ { - assert( yymsp[-1].minor.yy473!=0 ); - yymsp[-1].minor.yy473->pLast = yymsp[-1].minor.yy473; - yygotominor.yy473 = yymsp[-1].minor.yy473; + assert( yymsp[-1].minor.yy145!=0 ); + yymsp[-1].minor.yy145->pLast = yymsp[-1].minor.yy145; } break; - case 280: /* trnm ::= nm DOT nm */ + case 240: /* trnm ::= nm DOT nm */ { - yygotominor.yy0 = yymsp[0].minor.yy0; + yymsp[-2].minor.yy0 = yymsp[0].minor.yy0; sqlite3ErrorMsg(pParse, "qualified table names are not allowed on INSERT, UPDATE, and DELETE " "statements within triggers"); } break; - case 282: /* tridxby ::= INDEXED BY nm */ + case 241: /* tridxby ::= INDEXED BY nm */ { sqlite3ErrorMsg(pParse, "the INDEXED BY clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 283: /* tridxby ::= NOT INDEXED */ + case 242: /* tridxby ::= NOT INDEXED */ { sqlite3ErrorMsg(pParse, "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 284: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt */ -{ yygotominor.yy473 = sqlite3TriggerUpdateStep(pParse->db, &yymsp[-4].minor.yy0, yymsp[-1].minor.yy14, yymsp[0].minor.yy132, yymsp[-5].minor.yy186); } + case 243: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt */ +{yymsp[-6].minor.yy145 = sqlite3TriggerUpdateStep(pParse->db, &yymsp[-4].minor.yy0, yymsp[-1].minor.yy148, yymsp[0].minor.yy72, yymsp[-5].minor.yy194);} break; - case 285: /* trigger_cmd ::= insert_cmd INTO trnm inscollist_opt select */ -{yygotominor.yy473 = sqlite3TriggerInsertStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy408, yymsp[0].minor.yy3, yymsp[-4].minor.yy186);} + case 244: /* trigger_cmd ::= insert_cmd INTO trnm idlist_opt select */ +{yymsp[-4].minor.yy145 = sqlite3TriggerInsertStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy254, yymsp[0].minor.yy243, yymsp[-4].minor.yy194);/*A-overwrites-R*/} break; - case 286: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt */ -{yygotominor.yy473 = sqlite3TriggerDeleteStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[0].minor.yy132);} + case 245: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt */ +{yymsp[-4].minor.yy145 = sqlite3TriggerDeleteStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[0].minor.yy72);} break; - case 287: /* trigger_cmd ::= select */ -{yygotominor.yy473 = sqlite3TriggerSelectStep(pParse->db, yymsp[0].minor.yy3); } + case 246: /* trigger_cmd ::= select */ +{yymsp[0].minor.yy145 = sqlite3TriggerSelectStep(pParse->db, yymsp[0].minor.yy243); /*A-overwrites-X*/} break; - case 288: /* expr ::= RAISE LP IGNORE RP */ + case 247: /* expr ::= RAISE LP IGNORE RP */ { - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, 0); - if( yygotominor.yy346.pExpr ){ - yygotominor.yy346.pExpr->affinity = OE_Ignore; + spanSet(&yymsp[-3].minor.yy190,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/ + yymsp[-3].minor.yy190.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0); + if( yymsp[-3].minor.yy190.pExpr ){ + yymsp[-3].minor.yy190.pExpr->affinity = OE_Ignore; } - yygotominor.yy346.zStart = yymsp[-3].minor.yy0.z; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 289: /* expr ::= RAISE LP raisetype COMMA nm RP */ + case 248: /* expr ::= RAISE LP raisetype COMMA nm RP */ { - yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, &yymsp[-1].minor.yy0); - if( yygotominor.yy346.pExpr ) { - yygotominor.yy346.pExpr->affinity = (char)yymsp[-3].minor.yy328; + spanSet(&yymsp[-5].minor.yy190,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/ + yymsp[-5].minor.yy190.pExpr = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1); + if( yymsp[-5].minor.yy190.pExpr ) { + yymsp[-5].minor.yy190.pExpr->affinity = (char)yymsp[-3].minor.yy194; } - yygotominor.yy346.zStart = yymsp[-5].minor.yy0.z; - yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 290: /* raisetype ::= ROLLBACK */ -{yygotominor.yy328 = OE_Rollback;} + case 249: /* raisetype ::= ROLLBACK */ +{yymsp[0].minor.yy194 = OE_Rollback;} break; - case 292: /* raisetype ::= FAIL */ -{yygotominor.yy328 = OE_Fail;} + case 251: /* raisetype ::= FAIL */ +{yymsp[0].minor.yy194 = OE_Fail;} break; - case 293: /* cmd ::= DROP TRIGGER ifexists fullname */ + case 252: /* cmd ::= DROP TRIGGER ifexists fullname */ { - sqlite3DropTrigger(pParse,yymsp[0].minor.yy65,yymsp[-1].minor.yy328); + sqlite3DropTrigger(pParse,yymsp[0].minor.yy185,yymsp[-1].minor.yy194); } break; - case 294: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ + case 253: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ { - sqlite3Attach(pParse, yymsp[-3].minor.yy346.pExpr, yymsp[-1].minor.yy346.pExpr, yymsp[0].minor.yy132); + sqlite3Attach(pParse, yymsp[-3].minor.yy190.pExpr, yymsp[-1].minor.yy190.pExpr, yymsp[0].minor.yy72); } break; - case 295: /* cmd ::= DETACH database_kw_opt expr */ + case 254: /* cmd ::= DETACH database_kw_opt expr */ { - sqlite3Detach(pParse, yymsp[0].minor.yy346.pExpr); + sqlite3Detach(pParse, yymsp[0].minor.yy190.pExpr); } break; - case 300: /* cmd ::= REINDEX */ + case 257: /* cmd ::= REINDEX */ {sqlite3Reindex(pParse, 0, 0);} break; - case 301: /* cmd ::= REINDEX nm dbnm */ + case 258: /* cmd ::= REINDEX nm dbnm */ {sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 302: /* cmd ::= ANALYZE */ + case 259: /* cmd ::= ANALYZE */ {sqlite3Analyze(pParse, 0, 0);} break; - case 303: /* cmd ::= ANALYZE nm dbnm */ + case 260: /* cmd ::= ANALYZE nm dbnm */ {sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 304: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ + case 261: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ { - sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy65,&yymsp[0].minor.yy0); + sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy185,&yymsp[0].minor.yy0); } break; - case 305: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column */ + case 262: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */ { - sqlite3AlterFinishAddColumn(pParse, &yymsp[0].minor.yy0); + yymsp[-1].minor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-1].minor.yy0.z) + pParse->sLastToken.n; + sqlite3AlterFinishAddColumn(pParse, &yymsp[-1].minor.yy0); } break; - case 306: /* add_column_fullname ::= fullname */ + case 263: /* add_column_fullname ::= fullname */ { - pParse->db->lookaside.bEnabled = 0; - sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy65); + disableLookaside(pParse); + sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy185); } break; - case 309: /* cmd ::= create_vtab */ + case 264: /* cmd ::= create_vtab */ {sqlite3VtabFinishParse(pParse,0);} break; - case 310: /* cmd ::= create_vtab LP vtabarglist RP */ + case 265: /* cmd ::= create_vtab LP vtabarglist RP */ {sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);} break; - case 311: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ + case 266: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ { - sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy328); + sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy194); } break; - case 314: /* vtabarg ::= */ + case 267: /* vtabarg ::= */ {sqlite3VtabArgInit(pParse);} break; - case 316: /* vtabargtoken ::= ANY */ - case 317: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==317); - case 318: /* lp ::= LP */ yytestcase(yyruleno==318); + case 268: /* vtabargtoken ::= ANY */ + case 269: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==269); + case 270: /* lp ::= LP */ yytestcase(yyruleno==270); {sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);} break; - case 322: /* with ::= */ -{yygotominor.yy59 = 0;} + case 271: /* with ::= */ +{yymsp[1].minor.yy285 = 0;} break; - case 323: /* with ::= WITH wqlist */ - case 324: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==324); -{ yygotominor.yy59 = yymsp[0].minor.yy59; } + case 272: /* with ::= WITH wqlist */ +{ yymsp[-1].minor.yy285 = yymsp[0].minor.yy285; } break; - case 325: /* wqlist ::= nm idxlist_opt AS LP select RP */ + case 273: /* with ::= WITH RECURSIVE wqlist */ +{ yymsp[-2].minor.yy285 = yymsp[0].minor.yy285; } + break; + case 274: /* wqlist ::= nm eidlist_opt AS LP select RP */ { - yygotominor.yy59 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy14, yymsp[-1].minor.yy3); + yymsp[-5].minor.yy285 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy148, yymsp[-1].minor.yy243); /*A-overwrites-X*/ } break; - case 326: /* wqlist ::= wqlist COMMA nm idxlist_opt AS LP select RP */ + case 275: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */ { - yygotominor.yy59 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy59, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy14, yymsp[-1].minor.yy3); + yymsp[-7].minor.yy285 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy285, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy148, yymsp[-1].minor.yy243); } break; default: - /* (0) input ::= cmdlist */ yytestcase(yyruleno==0); - /* (1) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==1); - /* (2) cmdlist ::= ecmd */ yytestcase(yyruleno==2); - /* (3) ecmd ::= SEMI */ yytestcase(yyruleno==3); - /* (4) ecmd ::= explain cmdx SEMI */ yytestcase(yyruleno==4); - /* (10) trans_opt ::= */ yytestcase(yyruleno==10); - /* (11) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==11); - /* (12) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==12); - /* (20) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==20); - /* (21) savepoint_opt ::= */ yytestcase(yyruleno==21); - /* (25) cmd ::= create_table create_table_args */ yytestcase(yyruleno==25); - /* (36) columnlist ::= columnlist COMMA column */ yytestcase(yyruleno==36); - /* (37) columnlist ::= column */ yytestcase(yyruleno==37); - /* (43) type ::= */ yytestcase(yyruleno==43); - /* (50) signed ::= plus_num */ yytestcase(yyruleno==50); - /* (51) signed ::= minus_num */ yytestcase(yyruleno==51); - /* (52) carglist ::= carglist ccons */ yytestcase(yyruleno==52); - /* (53) carglist ::= */ yytestcase(yyruleno==53); - /* (60) ccons ::= NULL onconf */ yytestcase(yyruleno==60); - /* (88) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==88); - /* (89) conslist ::= tcons */ yytestcase(yyruleno==89); - /* (91) tconscomma ::= */ yytestcase(yyruleno==91); - /* (273) foreach_clause ::= */ yytestcase(yyruleno==273); - /* (274) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==274); - /* (281) tridxby ::= */ yytestcase(yyruleno==281); - /* (298) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==298); - /* (299) database_kw_opt ::= */ yytestcase(yyruleno==299); - /* (307) kwcolumn_opt ::= */ yytestcase(yyruleno==307); - /* (308) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==308); - /* (312) vtabarglist ::= vtabarg */ yytestcase(yyruleno==312); - /* (313) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==313); - /* (315) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==315); - /* (319) anylist ::= */ yytestcase(yyruleno==319); - /* (320) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==320); - /* (321) anylist ::= anylist ANY */ yytestcase(yyruleno==321); + /* (276) input ::= cmdlist */ yytestcase(yyruleno==276); + /* (277) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==277); + /* (278) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=278); + /* (279) ecmd ::= SEMI */ yytestcase(yyruleno==279); + /* (280) ecmd ::= explain cmdx SEMI */ yytestcase(yyruleno==280); + /* (281) explain ::= */ yytestcase(yyruleno==281); + /* (282) trans_opt ::= */ yytestcase(yyruleno==282); + /* (283) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==283); + /* (284) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==284); + /* (285) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==285); + /* (286) savepoint_opt ::= */ yytestcase(yyruleno==286); + /* (287) cmd ::= create_table create_table_args */ yytestcase(yyruleno==287); + /* (288) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==288); + /* (289) columnlist ::= columnname carglist */ yytestcase(yyruleno==289); + /* (290) nm ::= ID|INDEXED */ yytestcase(yyruleno==290); + /* (291) nm ::= STRING */ yytestcase(yyruleno==291); + /* (292) nm ::= JOIN_KW */ yytestcase(yyruleno==292); + /* (293) typetoken ::= typename */ yytestcase(yyruleno==293); + /* (294) typename ::= ID|STRING */ yytestcase(yyruleno==294); + /* (295) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=295); + /* (296) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=296); + /* (297) carglist ::= carglist ccons */ yytestcase(yyruleno==297); + /* (298) carglist ::= */ yytestcase(yyruleno==298); + /* (299) ccons ::= NULL onconf */ yytestcase(yyruleno==299); + /* (300) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==300); + /* (301) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==301); + /* (302) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=302); + /* (303) tconscomma ::= */ yytestcase(yyruleno==303); + /* (304) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=304); + /* (305) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=305); + /* (306) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=306); + /* (307) oneselect ::= values */ yytestcase(yyruleno==307); + /* (308) sclp ::= selcollist COMMA */ yytestcase(yyruleno==308); + /* (309) as ::= ID|STRING */ yytestcase(yyruleno==309); + /* (310) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=310); + /* (311) exprlist ::= nexprlist */ yytestcase(yyruleno==311); + /* (312) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=312); + /* (313) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=313); + /* (314) nmnum ::= ON */ yytestcase(yyruleno==314); + /* (315) nmnum ::= DELETE */ yytestcase(yyruleno==315); + /* (316) nmnum ::= DEFAULT */ yytestcase(yyruleno==316); + /* (317) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==317); + /* (318) foreach_clause ::= */ yytestcase(yyruleno==318); + /* (319) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==319); + /* (320) trnm ::= nm */ yytestcase(yyruleno==320); + /* (321) tridxby ::= */ yytestcase(yyruleno==321); + /* (322) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==322); + /* (323) database_kw_opt ::= */ yytestcase(yyruleno==323); + /* (324) kwcolumn_opt ::= */ yytestcase(yyruleno==324); + /* (325) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==325); + /* (326) vtabarglist ::= vtabarg */ yytestcase(yyruleno==326); + /* (327) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==327); + /* (328) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==328); + /* (329) anylist ::= */ yytestcase(yyruleno==329); + /* (330) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==330); + /* (331) anylist ::= anylist ANY */ yytestcase(yyruleno==331); break; +/********** End reduce actions ************************************************/ }; - assert( yyruleno>=0 && yyrulenoyyidx -= yysize; yyact = yy_find_reduce_action(yymsp[-yysize].stateno,(YYCODETYPE)yygoto); - if( yyact < YYNSTATE ){ -#ifdef NDEBUG - /* If we are not debugging and the reduce action popped at least - ** one element off the stack, then we can push the new element back - ** onto the stack here, and skip the stack overflow test in yy_shift(). - ** That gives a significant speed improvement. */ - if( yysize ){ - yypParser->yyidx++; - yymsp -= yysize-1; - yymsp->stateno = (YYACTIONTYPE)yyact; - yymsp->major = (YYCODETYPE)yygoto; - yymsp->minor = yygotominor; - }else -#endif - { - yy_shift(yypParser,yyact,yygoto,&yygotominor); + if( yyact <= YY_MAX_SHIFTREDUCE ){ + if( yyact>YY_MAX_SHIFT ){ + yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE; } + yymsp -= yysize-1; + yypParser->yytos = yymsp; + yymsp->stateno = (YYACTIONTYPE)yyact; + yymsp->major = (YYCODETYPE)yygoto; + yyTraceShift(yypParser, yyact); }else{ - assert( yyact == YYNSTATE + YYNRULE + 1 ); + assert( yyact == YY_ACCEPT_ACTION ); + yypParser->yytos -= yysize; yy_accept(yypParser); } } @@ -118063,9 +137896,11 @@ static void yy_parse_failed( fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt); } #endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); + while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser); /* Here code is inserted which will be executed whenever the ** parser fails */ +/************ Begin %parse_failure code ***************************************/ +/************ End %parse_failure code *****************************************/ sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ } #endif /* YYNOERRORRECOVERY */ @@ -118076,14 +137911,16 @@ static void yy_parse_failed( static void yy_syntax_error( yyParser *yypParser, /* The parser */ int yymajor, /* The major type of the error token */ - YYMINORTYPE yyminor /* The minor type of the error token */ + sqlite3ParserTOKENTYPE yyminor /* The minor type of the error token */ ){ sqlite3ParserARG_FETCH; -#define TOKEN (yyminor.yy0) +#define TOKEN yyminor +/************ Begin %syntax_error code ****************************************/ UNUSED_PARAMETER(yymajor); /* Silence some compiler warnings */ assert( TOKEN.z[0] ); /* The tokenizer always gives us a token */ sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN); +/************ End %syntax_error code ******************************************/ sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ } @@ -118099,9 +137936,14 @@ static void yy_accept( fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt); } #endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); +#ifndef YYNOERRORRECOVERY + yypParser->yyerrcnt = -1; +#endif + assert( yypParser->yytos==yypParser->yystack ); /* Here code is inserted which will be executed whenever the ** parser accepts */ +/*********** Begin %parse_accept code *****************************************/ +/*********** End %parse_accept code *******************************************/ sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ } @@ -118131,7 +137973,7 @@ SQLITE_PRIVATE void sqlite3Parser( sqlite3ParserARG_PDECL /* Optional %extra_argument parameter */ ){ YYMINORTYPE yyminorunion; - int yyact; /* The parser action. */ + unsigned int yyact; /* The parser action. */ #if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY) int yyendofinput; /* True if we are at the end of input */ #endif @@ -118140,23 +137982,8 @@ SQLITE_PRIVATE void sqlite3Parser( #endif yyParser *yypParser; /* The parser */ - /* (re)initialize the parser, if necessary */ yypParser = (yyParser*)yyp; - if( yypParser->yyidx<0 ){ -#if YYSTACKDEPTH<=0 - if( yypParser->yystksz <=0 ){ - /*memset(&yyminorunion, 0, sizeof(yyminorunion));*/ - yyminorunion = yyzerominor; - yyStackOverflow(yypParser, &yyminorunion); - return; - } -#endif - yypParser->yyidx = 0; - yypParser->yyerrcnt = -1; - yypParser->yystack[0].stateno = 0; - yypParser->yystack[0].major = 0; - } - yyminorunion.yy0 = yyminor; + assert( yypParser->yytos!=0 ); #if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY) yyendofinput = (yymajor==0); #endif @@ -118164,20 +137991,23 @@ SQLITE_PRIVATE void sqlite3Parser( #ifndef NDEBUG if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sInput %s\n",yyTracePrompt,yyTokenName[yymajor]); + fprintf(yyTraceFILE,"%sInput '%s'\n",yyTracePrompt,yyTokenName[yymajor]); } #endif do{ yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor); - if( yyactyyerrcnt--; +#endif yymajor = YYNOCODE; - }else if( yyact < YYNSTATE + YYNRULE ){ - yy_reduce(yypParser,yyact-YYNSTATE); + }else if( yyact <= YY_MAX_REDUCE ){ + yy_reduce(yypParser,yyact-YY_MIN_REDUCE); }else{ assert( yyact == YY_ERROR_ACTION ); + yyminorunion.yy0 = yyminor; #ifdef YYERRORSYMBOL int yymx; #endif @@ -118207,9 +138037,9 @@ SQLITE_PRIVATE void sqlite3Parser( ** */ if( yypParser->yyerrcnt<0 ){ - yy_syntax_error(yypParser,yymajor,yyminorunion); + yy_syntax_error(yypParser,yymajor,yyminor); } - yymx = yypParser->yystack[yypParser->yyidx].major; + yymx = yypParser->yytos->major; if( yymx==YYERRORSYMBOL || yyerrorhit ){ #ifndef NDEBUG if( yyTraceFILE ){ @@ -118217,26 +138047,26 @@ SQLITE_PRIVATE void sqlite3Parser( yyTracePrompt,yyTokenName[yymajor]); } #endif - yy_destructor(yypParser, (YYCODETYPE)yymajor,&yyminorunion); + yy_destructor(yypParser, (YYCODETYPE)yymajor, &yyminorunion); yymajor = YYNOCODE; }else{ - while( - yypParser->yyidx >= 0 && - yymx != YYERRORSYMBOL && - (yyact = yy_find_reduce_action( - yypParser->yystack[yypParser->yyidx].stateno, - YYERRORSYMBOL)) >= YYNSTATE + while( yypParser->yytos >= yypParser->yystack + && yymx != YYERRORSYMBOL + && (yyact = yy_find_reduce_action( + yypParser->yytos->stateno, + YYERRORSYMBOL)) >= YY_MIN_REDUCE ){ yy_pop_parser_stack(yypParser); } - if( yypParser->yyidx < 0 || yymajor==0 ){ + if( yypParser->yytos < yypParser->yystack || yymajor==0 ){ yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); yy_parse_failed(yypParser); +#ifndef YYNOERRORRECOVERY + yypParser->yyerrcnt = -1; +#endif yymajor = YYNOCODE; }else if( yymx!=YYERRORSYMBOL ){ - YYMINORTYPE u2; - u2.YYERRSYMDT = 0; - yy_shift(yypParser,yyact,YYERRORSYMBOL,&u2); + yy_shift(yypParser,yyact,YYERRORSYMBOL,yyminor); } } yypParser->yyerrcnt = 3; @@ -118249,7 +138079,7 @@ SQLITE_PRIVATE void sqlite3Parser( ** Applications can set this macro (for example inside %include) if ** they intend to abandon the parse upon the first syntax error seen. */ - yy_syntax_error(yypParser,yymajor,yyminorunion); + yy_syntax_error(yypParser,yymajor, yyminor); yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); yymajor = YYNOCODE; @@ -118264,17 +138094,32 @@ SQLITE_PRIVATE void sqlite3Parser( ** three input tokens have been successfully shifted. */ if( yypParser->yyerrcnt<=0 ){ - yy_syntax_error(yypParser,yymajor,yyminorunion); + yy_syntax_error(yypParser,yymajor, yyminor); } yypParser->yyerrcnt = 3; yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); if( yyendofinput ){ yy_parse_failed(yypParser); +#ifndef YYNOERRORRECOVERY + yypParser->yyerrcnt = -1; +#endif } yymajor = YYNOCODE; #endif } - }while( yymajor!=YYNOCODE && yypParser->yyidx>=0 ); + }while( yymajor!=YYNOCODE && yypParser->yytos>yypParser->yystack ); +#ifndef NDEBUG + if( yyTraceFILE ){ + yyStackEntry *i; + char cDiv = '['; + fprintf(yyTraceFILE,"%sReturn. Stack=",yyTracePrompt); + for(i=&yypParser->yystack[1]; i<=yypParser->yytos; i++){ + fprintf(yyTraceFILE,"%c%s", cDiv, yyTokenName[i->major]); + cDiv = ' '; + } + fprintf(yyTraceFILE,"]\n"); + } +#endif return; } @@ -118297,14 +138142,95 @@ SQLITE_PRIVATE void sqlite3Parser( ** individual tokens and sends those tokens one-by-one over to the ** parser for analysis. */ +/* #include "sqliteInt.h" */ /* #include */ +/* Character classes for tokenizing +** +** In the sqlite3GetToken() function, a switch() on aiClass[c] is implemented +** using a lookup table, whereas a switch() directly on c uses a binary search. +** The lookup table is much faster. To maximize speed, and to ensure that +** a lookup table is used, all of the classes need to be small integers and +** all of them need to be used within the switch. +*/ +#define CC_X 0 /* The letter 'x', or start of BLOB literal */ +#define CC_KYWD 1 /* Alphabetics or '_'. Usable in a keyword */ +#define CC_ID 2 /* unicode characters usable in IDs */ +#define CC_DIGIT 3 /* Digits */ +#define CC_DOLLAR 4 /* '$' */ +#define CC_VARALPHA 5 /* '@', '#', ':'. Alphabetic SQL variables */ +#define CC_VARNUM 6 /* '?'. Numeric SQL variables */ +#define CC_SPACE 7 /* Space characters */ +#define CC_QUOTE 8 /* '"', '\'', or '`'. String literals, quoted ids */ +#define CC_QUOTE2 9 /* '['. [...] style quoted ids */ +#define CC_PIPE 10 /* '|'. Bitwise OR or concatenate */ +#define CC_MINUS 11 /* '-'. Minus or SQL-style comment */ +#define CC_LT 12 /* '<'. Part of < or <= or <> */ +#define CC_GT 13 /* '>'. Part of > or >= */ +#define CC_EQ 14 /* '='. Part of = or == */ +#define CC_BANG 15 /* '!'. Part of != */ +#define CC_SLASH 16 /* '/'. / or c-style comment */ +#define CC_LP 17 /* '(' */ +#define CC_RP 18 /* ')' */ +#define CC_SEMI 19 /* ';' */ +#define CC_PLUS 20 /* '+' */ +#define CC_STAR 21 /* '*' */ +#define CC_PERCENT 22 /* '%' */ +#define CC_COMMA 23 /* ',' */ +#define CC_AND 24 /* '&' */ +#define CC_TILDA 25 /* '~' */ +#define CC_DOT 26 /* '.' */ +#define CC_ILLEGAL 27 /* Illegal character */ + +static const unsigned char aiClass[] = { +#ifdef SQLITE_ASCII +/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xa xb xc xd xe xf */ +/* 0x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 7, 7, 27, 7, 7, 27, 27, +/* 1x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 2x */ 7, 15, 8, 5, 4, 22, 24, 8, 17, 18, 21, 20, 23, 11, 26, 16, +/* 3x */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 19, 12, 14, 13, 6, +/* 4x */ 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, +/* 5x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 9, 27, 27, 27, 1, +/* 6x */ 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, +/* 7x */ 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 27, 10, 27, 25, 27, +/* 8x */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* 9x */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Ax */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Bx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Cx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Dx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Ex */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, +/* Fx */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 +#endif +#ifdef SQLITE_EBCDIC +/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xa xb xc xd xe xf */ +/* 0x */ 27, 27, 27, 27, 27, 7, 27, 27, 27, 27, 27, 27, 7, 7, 27, 27, +/* 1x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 2x */ 27, 27, 27, 27, 27, 7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 3x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +/* 4x */ 7, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 26, 12, 17, 20, 10, +/* 5x */ 24, 27, 27, 27, 27, 27, 27, 27, 27, 27, 15, 4, 21, 18, 19, 27, +/* 6x */ 11, 16, 27, 27, 27, 27, 27, 27, 27, 27, 27, 23, 22, 1, 13, 6, +/* 7x */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 8, 5, 5, 5, 8, 14, 8, +/* 8x */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, +/* 9x */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, +/* Ax */ 27, 25, 1, 1, 1, 1, 1, 0, 1, 1, 27, 27, 27, 27, 27, 27, +/* Bx */ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 27, 27, 27, 27, 27, +/* Cx */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, +/* Dx */ 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 27, 27, 27, 27, 27, +/* Ex */ 27, 27, 1, 1, 1, 1, 1, 0, 1, 1, 27, 27, 27, 27, 27, 27, +/* Fx */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 27, 27, 27, 27, 27, 27, +#endif +}; + /* -** The charMap() macro maps alphabetic characters into their +** The charMap() macro maps alphabetic characters (only) into their ** lower-case ASCII equivalent. On ASCII machines, this is just ** an upper-to-lower case map. On EBCDIC machines we also need -** to adjust the encoding. Only alphabetic characters and underscores -** need to be translated. +** to adjust the encoding. The mapping is only valid for alphabetics +** which are the only characters for which this feature is used. +** +** Used by keywordhash.h */ #ifdef SQLITE_ASCII # define charMap(X) sqlite3UpperToLower[(unsigned char)X] @@ -118338,7 +138264,7 @@ const unsigned char ebcdicToAscii[] = { ** returned. If the input is not a keyword, TK_ID is returned. ** ** The implementation of this routine was generated by a program, -** mkkeywordhash.h, located in the tool subdirectory of the distribution. +** mkkeywordhash.c, located in the tool subdirectory of the distribution. ** The output of the mkkeywordhash.c program is written into a file ** named keywordhash.h and then included into this source file by ** the #include below. @@ -118359,7 +138285,7 @@ const unsigned char ebcdicToAscii[] = { ** on platforms with limited memory. */ /* Hash score: 182 */ -static int keywordCode(const char *z, int n){ +static int keywordCode(const char *z, int n, int *pType){ /* zText[] encodes 834 bytes of keywords in 554 bytes */ /* REINDEXEDESCAPEACHECKEYBEFOREIGNOREGEXPLAINSTEADDATABASELECT */ /* ABLEFTHENDEFERRABLELSEXCEPTRANSACTIONATURALTERAISEXCLUSIVE */ @@ -118479,13 +138405,21 @@ static int keywordCode(const char *z, int n){ TK_JOIN_KW, TK_ROLLBACK, TK_ROW, TK_UNION, TK_USING, TK_VACUUM, TK_VIEW, TK_INITIALLY, TK_ALL, }; - int h, i; - if( n<2 ) return TK_ID; - h = ((charMap(z[0])*4) ^ - (charMap(z[n-1])*3) ^ - n) % 127; - for(i=((int)aHash[h])-1; i>=0; i=((int)aNext[i])-1){ - if( aLen[i]==n && sqlite3StrNICmp(&zText[aOffset[i]],z,n)==0 ){ + int i, j; + const char *zKW; + if( n>=2 ){ + i = ((charMap(z[0])*4) ^ (charMap(z[n-1])*3) ^ n) % 127; + for(i=((int)aHash[i])-1; i>=0; i=((int)aNext[i])-1){ + if( aLen[i]!=n ) continue; + j = 0; + zKW = &zText[aOffset[i]]; +#ifdef SQLITE_ASCII + while( j=0x42 && sqlite3IsEbcdicIdChar[c-0x40])) #endif +/* Make the IdChar function accessible from ctime.c */ +#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS +SQLITE_PRIVATE int sqlite3IsIdChar(u8 c){ return IdChar(c); } +#endif + /* -** Return the length of the token that begins at z[0]. +** Return the length (in bytes) of the token that begins at z[0]. ** Store the token type in *tokenType before returning. */ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ int i, c; - switch( *z ){ - case ' ': case '\t': case '\n': case '\f': case '\r': { + switch( aiClass[*z] ){ /* Switch on the character-class of the first byte + ** of the token. See the comment on the CC_ defines + ** above. */ + case CC_SPACE: { testcase( z[0]==' ' ); testcase( z[0]=='\t' ); testcase( z[0]=='\n' ); @@ -118680,7 +138624,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ *tokenType = TK_SPACE; return i; } - case '-': { + case CC_MINUS: { if( z[1]=='-' ){ for(i=2; (c=z[i])!=0 && c!='\n'; i++){} *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ @@ -118689,27 +138633,27 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ *tokenType = TK_MINUS; return 1; } - case '(': { + case CC_LP: { *tokenType = TK_LP; return 1; } - case ')': { + case CC_RP: { *tokenType = TK_RP; return 1; } - case ';': { + case CC_SEMI: { *tokenType = TK_SEMI; return 1; } - case '+': { + case CC_PLUS: { *tokenType = TK_PLUS; return 1; } - case '*': { + case CC_STAR: { *tokenType = TK_STAR; return 1; } - case '/': { + case CC_SLASH: { if( z[1]!='*' || z[2]==0 ){ *tokenType = TK_SLASH; return 1; @@ -118719,15 +138663,15 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ *tokenType = TK_SPACE; /* IMP: R-22934-25134 */ return i; } - case '%': { + case CC_PERCENT: { *tokenType = TK_REM; return 1; } - case '=': { + case CC_EQ: { *tokenType = TK_EQ; return 1 + (z[1]=='='); } - case '<': { + case CC_LT: { if( (c=z[1])=='=' ){ *tokenType = TK_LE; return 2; @@ -118742,7 +138686,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ return 1; } } - case '>': { + case CC_GT: { if( (c=z[1])=='=' ){ *tokenType = TK_GE; return 2; @@ -118754,16 +138698,16 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ return 1; } } - case '!': { + case CC_BANG: { if( z[1]!='=' ){ *tokenType = TK_ILLEGAL; - return 2; + return 1; }else{ *tokenType = TK_NE; return 2; } } - case '|': { + case CC_PIPE: { if( z[1]!='|' ){ *tokenType = TK_BITOR; return 1; @@ -118772,21 +138716,19 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ return 2; } } - case ',': { + case CC_COMMA: { *tokenType = TK_COMMA; return 1; } - case '&': { + case CC_AND: { *tokenType = TK_BITAND; return 1; } - case '~': { + case CC_TILDA: { *tokenType = TK_BITNOT; return 1; } - case '`': - case '\'': - case '"': { + case CC_QUOTE: { int delim = z[0]; testcase( delim=='`' ); testcase( delim=='\'' ); @@ -118811,7 +138753,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ return i; } } - case '.': { + case CC_DOT: { #ifndef SQLITE_OMIT_FLOATING_POINT if( !sqlite3Isdigit(z[1]) ) #endif @@ -118822,13 +138764,18 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ /* If the next character is a digit, this is a floating point ** number that begins with ".". Fall thru into the next case */ } - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': { + case CC_DIGIT: { testcase( z[0]=='0' ); testcase( z[0]=='1' ); testcase( z[0]=='2' ); testcase( z[0]=='3' ); testcase( z[0]=='4' ); testcase( z[0]=='5' ); testcase( z[0]=='6' ); testcase( z[0]=='7' ); testcase( z[0]=='8' ); testcase( z[0]=='9' ); *tokenType = TK_INTEGER; +#ifndef SQLITE_OMIT_HEX_INTEGER + if( z[0]=='0' && (z[1]=='x' || z[1]=='X') && sqlite3Isxdigit(z[2]) ){ + for(i=3; sqlite3Isxdigit(z[i]); i++){} + return i; + } +#endif for(i=0; sqlite3Isdigit(z[i]); i++){} #ifndef SQLITE_OMIT_FLOATING_POINT if( z[i]=='.' ){ @@ -118852,22 +138799,18 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ } return i; } - case '[': { + case CC_QUOTE2: { for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} *tokenType = c==']' ? TK_ID : TK_ILLEGAL; return i; } - case '?': { + case CC_VARNUM: { *tokenType = TK_VARIABLE; for(i=1; sqlite3Isdigit(z[i]); i++){} return i; } -#ifndef SQLITE_OMIT_TCL_VARIABLE - case '$': -#endif - case '@': /* For compatibility with MS SQL Server */ - case '#': - case ':': { + case CC_DOLLAR: + case CC_VARALPHA: { int n = 0; testcase( z[0]=='$' ); testcase( z[0]=='@' ); testcase( z[0]==':' ); testcase( z[0]=='#' ); @@ -118896,8 +138839,20 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ if( n==0 ) *tokenType = TK_ILLEGAL; return i; } + case CC_KYWD: { + for(i=1; aiClass[z[i]]<=CC_KYWD; i++){} + if( IdChar(z[i]) ){ + /* This token started out using characters that can appear in keywords, + ** but z[i] is a character not allowed within keywords, so this must + ** be an identifier instead */ + i++; + break; + } + *tokenType = TK_ID; + return keywordCode((char*)z, i, tokenType); + } + case CC_X: { #ifndef SQLITE_OMIT_BLOB_LITERAL - case 'x': case 'X': { testcase( z[0]=='x' ); testcase( z[0]=='X' ); if( z[1]=='\'' ){ *tokenType = TK_BLOB; @@ -118909,20 +138864,22 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){ if( z[i] ) i++; return i; } - /* Otherwise fall through to the next case */ - } #endif + /* If it is not a BLOB literal, then it must be an ID, since no + ** SQL keywords start with the letter 'x'. Fall through */ + } + case CC_ID: { + i = 1; + break; + } default: { - if( !IdChar(*z) ){ - break; - } - for(i=1; IdChar(z[i]); i++){} - *tokenType = keywordCode((char*)z, i); - return i; + *tokenType = TK_ILLEGAL; + return 1; } } - *tokenType = TK_ILLEGAL; - return 1; + while( IdChar(z[i]) ){ i++; } + *tokenType = TK_ID; + return i; } /* @@ -118938,11 +138895,13 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr void *pEngine; /* The LEMON-generated LALR(1) parser */ int tokenType; /* type of the next token */ int lastTokenParsed = -1; /* type of the previous token */ - u8 enableLookaside; /* Saved value of db->lookaside.bEnabled */ sqlite3 *db = pParse->db; /* The database connection */ int mxSqlLen; /* Max length of an SQL string */ +#ifdef sqlite3Parser_ENGINEALWAYSONSTACK + unsigned char zSpace[sizeof(yyParser)]; /* Space for parser engine object */ +#endif - + assert( zSql!=0 ); mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH]; if( db->nVdbeActive==0 ){ db->u1.isInterrupted = 0; @@ -118951,77 +138910,78 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr pParse->zTail = zSql; i = 0; assert( pzErrMsg!=0 ); - pEngine = sqlite3ParserAlloc((void*(*)(size_t))sqlite3Malloc); + /* sqlite3ParserTrace(stdout, "parser: "); */ +#ifdef sqlite3Parser_ENGINEALWAYSONSTACK + pEngine = zSpace; + sqlite3ParserInit(pEngine); +#else + pEngine = sqlite3ParserAlloc(sqlite3Malloc); if( pEngine==0 ){ - db->mallocFailed = 1; - return SQLITE_NOMEM; + sqlite3OomFault(db); + return SQLITE_NOMEM_BKPT; } +#endif assert( pParse->pNewTable==0 ); assert( pParse->pNewTrigger==0 ); assert( pParse->nVar==0 ); - assert( pParse->nzVar==0 ); - assert( pParse->azVar==0 ); - enableLookaside = db->lookaside.bEnabled; - if( db->lookaside.pStart ) db->lookaside.bEnabled = 1; - while( !db->mallocFailed && zSql[i]!=0 ){ + assert( pParse->pVList==0 ); + while( 1 ){ assert( i>=0 ); - pParse->sLastToken.z = &zSql[i]; - pParse->sLastToken.n = sqlite3GetToken((unsigned char*)&zSql[i],&tokenType); - i += pParse->sLastToken.n; - if( i>mxSqlLen ){ - pParse->rc = SQLITE_TOOBIG; - break; - } - switch( tokenType ){ - case TK_SPACE: { - if( db->u1.isInterrupted ){ - sqlite3ErrorMsg(pParse, "interrupt"); - pParse->rc = SQLITE_INTERRUPT; - goto abort_parse; - } + if( zSql[i]!=0 ){ + pParse->sLastToken.z = &zSql[i]; + pParse->sLastToken.n = sqlite3GetToken((u8*)&zSql[i],&tokenType); + i += pParse->sLastToken.n; + if( i>mxSqlLen ){ + pParse->rc = SQLITE_TOOBIG; break; } - case TK_ILLEGAL: { - sqlite3DbFree(db, *pzErrMsg); - *pzErrMsg = sqlite3MPrintf(db, "unrecognized token: \"%T\"", + }else{ + /* Upon reaching the end of input, call the parser two more times + ** with tokens TK_SEMI and 0, in that order. */ + if( lastTokenParsed==TK_SEMI ){ + tokenType = 0; + }else if( lastTokenParsed==0 ){ + break; + }else{ + tokenType = TK_SEMI; + } + } + if( tokenType>=TK_SPACE ){ + assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL ); + if( db->u1.isInterrupted ){ + pParse->rc = SQLITE_INTERRUPT; + break; + } + if( tokenType==TK_ILLEGAL ){ + sqlite3ErrorMsg(pParse, "unrecognized token: \"%T\"", &pParse->sLastToken); - nErr++; - goto abort_parse; - } - case TK_SEMI: { - pParse->zTail = &zSql[i]; - /* Fall thru into the default case */ - } - default: { - sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse); - lastTokenParsed = tokenType; - if( pParse->rc!=SQLITE_OK ){ - goto abort_parse; - } break; } + }else{ + sqlite3Parser(pEngine, tokenType, pParse->sLastToken, pParse); + lastTokenParsed = tokenType; + if( pParse->rc!=SQLITE_OK || db->mallocFailed ) break; } } -abort_parse: - if( zSql[i]==0 && nErr==0 && pParse->rc==SQLITE_OK ){ - if( lastTokenParsed!=TK_SEMI ){ - sqlite3Parser(pEngine, TK_SEMI, pParse->sLastToken, pParse); - pParse->zTail = &zSql[i]; - } - sqlite3Parser(pEngine, 0, pParse->sLastToken, pParse); - } + assert( nErr==0 ); + pParse->zTail = &zSql[i]; #ifdef YYTRACKMAXSTACKDEPTH - sqlite3StatusSet(SQLITE_STATUS_PARSER_STACK, + sqlite3_mutex_enter(sqlite3MallocMutex()); + sqlite3StatusHighwater(SQLITE_STATUS_PARSER_STACK, sqlite3ParserStackPeak(pEngine) ); + sqlite3_mutex_leave(sqlite3MallocMutex()); #endif /* YYDEBUG */ +#ifdef sqlite3Parser_ENGINEALWAYSONSTACK + sqlite3ParserFinalize(pEngine); +#else sqlite3ParserFree(pEngine, sqlite3_free); - db->lookaside.bEnabled = enableLookaside; +#endif if( db->mallocFailed ){ - pParse->rc = SQLITE_NOMEM; + pParse->rc = SQLITE_NOMEM_BKPT; } if( pParse->rc!=SQLITE_OK && pParse->rc!=SQLITE_DONE && pParse->zErrMsg==0 ){ - sqlite3SetString(&pParse->zErrMsg, db, "%s", sqlite3ErrStr(pParse->rc)); + pParse->zErrMsg = sqlite3MPrintf(db, "%s", sqlite3ErrStr(pParse->rc)); } assert( pzErrMsg!=0 ); if( pParse->zErrMsg ){ @@ -119053,10 +139013,9 @@ abort_parse: sqlite3DeleteTable(db, pParse->pNewTable); } - if( pParse->bFreeWith ) sqlite3WithDelete(db, pParse->pWith); + if( pParse->pWithToFree ) sqlite3WithDelete(db, pParse->pWithToFree); sqlite3DeleteTrigger(db, pParse->pNewTrigger); - for(i=pParse->nzVar-1; i>=0; i--) sqlite3DbFree(db, pParse->azVar[i]); - sqlite3DbFree(db, pParse->azVar); + sqlite3DbFree(db, pParse->pVList); while( pParse->pAinc ){ AutoincInfo *p = pParse->pAinc; pParse->pAinc = p->pNext; @@ -119067,9 +139026,7 @@ abort_parse: pParse->pZombieTab = p->pNextZombie; sqlite3DeleteTable(db, p); } - if( nErr>0 && pParse->rc==SQLITE_OK ){ - pParse->rc = SQLITE_ERROR; - } + assert( nErr==0 || pParse->rc!=SQLITE_OK ); return nErr; } @@ -119093,6 +139050,7 @@ abort_parse: ** separating it out, the code will be automatically omitted from ** static links that do not use it. */ +/* #include "sqliteInt.h" */ #ifndef SQLITE_OMIT_COMPLETE /* @@ -119146,7 +139104,7 @@ SQLITE_PRIVATE const char sqlite3IsEbcdicIdChar[]; ** a statement. ** ** (4) CREATE The keyword CREATE has been seen at the beginning of a -** statement, possibly preceeded by EXPLAIN and/or followed by +** statement, possibly preceded by EXPLAIN and/or followed by ** TEMP or TEMPORARY ** ** (5) TRIGGER We are in the middle of a trigger definition that must be @@ -119156,7 +139114,7 @@ SQLITE_PRIVATE const char sqlite3IsEbcdicIdChar[]; ** the end of a trigger definition. ** ** (7) END We've seen the ";END" of the ";END;" that occurs at the end -** of a trigger difinition. +** of a trigger definition. ** ** Transitions between states above are determined by tokens extracted ** from the input. The following tokens are significant: @@ -119199,7 +139157,7 @@ SQLITE_API int sqlite3_complete(const char *zSql){ }; #else /* If triggers are not supported by this compile then the statement machine - ** used to detect the end of a statement is much simplier + ** used to detect the end of a statement is much simpler */ static const u8 trans[3][3] = { /* Token: */ @@ -119210,6 +139168,13 @@ SQLITE_API int sqlite3_complete(const char *zSql){ }; #endif /* SQLITE_OMIT_TRIGGER */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( zSql==0 ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + while( *zSql ){ switch( *zSql ){ case ';': { /* A semicolon */ @@ -119338,7 +139303,7 @@ SQLITE_API int sqlite3_complete(const char *zSql){ SQLITE_API int sqlite3_complete16(const void *zSql){ sqlite3_value *pVal; char const *zSql8; - int rc = SQLITE_NOMEM; + int rc; #ifndef SQLITE_OMIT_AUTOINIT rc = sqlite3_initialize(); @@ -119350,10 +139315,10 @@ SQLITE_API int sqlite3_complete16(const void *zSql){ if( zSql8 ){ rc = sqlite3_complete(zSql8); }else{ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } sqlite3ValueFree(pVal); - return sqlite3ApiExit(0, rc); + return rc & 0xff; } #endif /* SQLITE_OMIT_UTF16 */ #endif /* SQLITE_OMIT_COMPLETE */ @@ -119376,6 +139341,7 @@ SQLITE_API int sqlite3_complete16(const void *zSql){ ** other files are for internal use by SQLite and should not be ** accessed by users of the library. */ +/* #include "sqliteInt.h" */ #ifdef SQLITE_ENABLE_FTS3 /************** Include fts3.h in the middle of main.c ***********************/ @@ -119395,6 +139361,7 @@ SQLITE_API int sqlite3_complete16(const void *zSql){ ** This header file is used by programs that want to link against the ** FTS3 library. All it does is declare the sqlite3Fts3Init() interface. */ +/* #include "sqlite3.h" */ #if 0 extern "C" { @@ -119427,6 +139394,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db); ** This header file is used by programs that want to link against the ** RTREE library. All it does is declare the sqlite3RtreeInit() interface. */ +/* #include "sqlite3.h" */ #if 0 extern "C" { @@ -119459,6 +139427,7 @@ SQLITE_PRIVATE int sqlite3RtreeInit(sqlite3 *db); ** This header file is used by programs that want to link against the ** ICU extension. All it does is declare the sqlite3IcuInit() interface. */ +/* #include "sqlite3.h" */ #if 0 extern "C" { @@ -119474,6 +139443,12 @@ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db); /************** End of sqliteicu.h *******************************************/ /************** Continuing where we left off in main.c ***********************/ #endif +#ifdef SQLITE_ENABLE_JSON1 +SQLITE_PRIVATE int sqlite3Json1Init(sqlite3*); +#endif +#ifdef SQLITE_ENABLE_FTS5 +SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*); +#endif #ifndef SQLITE_AMALGAMATION /* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant @@ -119504,6 +139479,18 @@ SQLITE_API int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; } */ SQLITE_API int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; } +/* +** When compiling the test fixture or with debugging enabled (on Win32), +** this variable being set to non-zero will cause OSTRACE macros to emit +** extra diagnostic information. +*/ +#ifdef SQLITE_HAVE_OS_TRACE +# ifndef SQLITE_DEBUG_OS_TRACE +# define SQLITE_DEBUG_OS_TRACE 0 +# endif + int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE; +#endif + #if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE) /* ** If the following function pointer is not NULL and if @@ -119511,7 +139498,7 @@ SQLITE_API int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; } ** I/O active are written using this function. These messages ** are intended for debugging activity only. */ -SQLITE_PRIVATE void (*sqlite3IoTrace)(const char*, ...) = 0; +SQLITE_API void (SQLITE_CDECL *sqlite3IoTrace)(const char*, ...) = 0; #endif /* @@ -119577,6 +139564,11 @@ SQLITE_API int sqlite3_initialize(void){ } #endif + /* If the following assert() fails on some obscure processor/compiler + ** combination, the work-around is to set the correct pointer + ** size at compile-time using -DSQLITE_PTRSIZE=n compile-time option */ + assert( SQLITE_PTRSIZE==sizeof(char*) ); + /* If SQLite is already completely initialized, then this call ** to sqlite3_initialize() should be a no-op. But the initialization ** must be complete. So isInit must not be set until the very end @@ -119613,7 +139605,7 @@ SQLITE_API int sqlite3_initialize(void){ sqlite3GlobalConfig.pInitMutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE); if( sqlite3GlobalConfig.bCoreMutex && !sqlite3GlobalConfig.pInitMutex ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } } } @@ -119644,10 +139636,15 @@ SQLITE_API int sqlite3_initialize(void){ */ sqlite3_mutex_enter(sqlite3GlobalConfig.pInitMutex); if( sqlite3GlobalConfig.isInit==0 && sqlite3GlobalConfig.inProgress==0 ){ - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); sqlite3GlobalConfig.inProgress = 1; - memset(pHash, 0, sizeof(sqlite3GlobalFunctions)); - sqlite3RegisterGlobalFunctions(); +#ifdef SQLITE_ENABLE_SQLLOG + { + extern void sqlite3_init_sqllog(void); + sqlite3_init_sqllog(); + } +#endif + memset(&sqlite3BuiltinFunctions, 0, sizeof(sqlite3BuiltinFunctions)); + sqlite3RegisterBuiltinFunctions(); if( sqlite3GlobalConfig.isPCacheInit==0 ){ rc = sqlite3PcacheInitialize(); } @@ -119720,6 +139717,13 @@ SQLITE_API int sqlite3_initialize(void){ ** when this routine is invoked, then this routine is a harmless no-op. */ SQLITE_API int sqlite3_shutdown(void){ +#ifdef SQLITE_OMIT_WSD + int rc = sqlite3_wsd_init(4096, 24); + if( rc!=SQLITE_OK ){ + return rc; + } +#endif + if( sqlite3GlobalConfig.isInit ){ #ifdef SQLITE_EXTRA_SHUTDOWN void SQLITE_EXTRA_SHUTDOWN(void); @@ -119778,33 +139782,43 @@ SQLITE_API int sqlite3_config(int op, ...){ switch( op ){ /* Mutex configuration options are only available in a threadsafe - ** compile. + ** compile. */ -#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-54466-46756 */ case SQLITE_CONFIG_SINGLETHREAD: { - /* Disable all mutexing */ - sqlite3GlobalConfig.bCoreMutex = 0; - sqlite3GlobalConfig.bFullMutex = 0; + /* EVIDENCE-OF: R-02748-19096 This option sets the threading mode to + ** Single-thread. */ + sqlite3GlobalConfig.bCoreMutex = 0; /* Disable mutex on core */ + sqlite3GlobalConfig.bFullMutex = 0; /* Disable mutex on connections */ break; } +#endif +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-20520-54086 */ case SQLITE_CONFIG_MULTITHREAD: { - /* Disable mutexing of database connections */ - /* Enable mutexing of core data structures */ - sqlite3GlobalConfig.bCoreMutex = 1; - sqlite3GlobalConfig.bFullMutex = 0; + /* EVIDENCE-OF: R-14374-42468 This option sets the threading mode to + ** Multi-thread. */ + sqlite3GlobalConfig.bCoreMutex = 1; /* Enable mutex on core */ + sqlite3GlobalConfig.bFullMutex = 0; /* Disable mutex on connections */ break; } +#endif +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-59593-21810 */ case SQLITE_CONFIG_SERIALIZED: { - /* Enable all mutexing */ - sqlite3GlobalConfig.bCoreMutex = 1; - sqlite3GlobalConfig.bFullMutex = 1; + /* EVIDENCE-OF: R-41220-51800 This option sets the threading mode to + ** Serialized. */ + sqlite3GlobalConfig.bCoreMutex = 1; /* Enable mutex on core */ + sqlite3GlobalConfig.bFullMutex = 1; /* Enable mutex on connections */ break; } +#endif +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-63666-48755 */ case SQLITE_CONFIG_MUTEX: { /* Specify an alternative mutex implementation */ sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*); break; } +#endif +#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-14450-37597 */ case SQLITE_CONFIG_GETMUTEX: { /* Retrieve the current mutex implementation */ *va_arg(ap, sqlite3_mutex_methods*) = sqlite3GlobalConfig.mutex; @@ -119812,37 +139826,62 @@ SQLITE_API int sqlite3_config(int op, ...){ } #endif - case SQLITE_CONFIG_MALLOC: { - /* Specify an alternative malloc implementation */ + /* EVIDENCE-OF: R-55594-21030 The SQLITE_CONFIG_MALLOC option takes a + ** single argument which is a pointer to an instance of the + ** sqlite3_mem_methods structure. The argument specifies alternative + ** low-level memory allocation routines to be used in place of the memory + ** allocation routines built into SQLite. */ sqlite3GlobalConfig.m = *va_arg(ap, sqlite3_mem_methods*); break; } case SQLITE_CONFIG_GETMALLOC: { - /* Retrieve the current malloc() implementation */ + /* EVIDENCE-OF: R-51213-46414 The SQLITE_CONFIG_GETMALLOC option takes a + ** single argument which is a pointer to an instance of the + ** sqlite3_mem_methods structure. The sqlite3_mem_methods structure is + ** filled with the currently defined memory allocation routines. */ if( sqlite3GlobalConfig.m.xMalloc==0 ) sqlite3MemSetDefault(); *va_arg(ap, sqlite3_mem_methods*) = sqlite3GlobalConfig.m; break; } case SQLITE_CONFIG_MEMSTATUS: { - /* Enable or disable the malloc status collection */ + /* EVIDENCE-OF: R-61275-35157 The SQLITE_CONFIG_MEMSTATUS option takes + ** single argument of type int, interpreted as a boolean, which enables + ** or disables the collection of memory allocation statistics. */ sqlite3GlobalConfig.bMemstat = va_arg(ap, int); break; } case SQLITE_CONFIG_SCRATCH: { - /* Designate a buffer for scratch memory space */ + /* EVIDENCE-OF: R-08404-60887 There are three arguments to + ** SQLITE_CONFIG_SCRATCH: A pointer an 8-byte aligned memory buffer from + ** which the scratch allocations will be drawn, the size of each scratch + ** allocation (sz), and the maximum number of scratch allocations (N). */ sqlite3GlobalConfig.pScratch = va_arg(ap, void*); sqlite3GlobalConfig.szScratch = va_arg(ap, int); sqlite3GlobalConfig.nScratch = va_arg(ap, int); break; } case SQLITE_CONFIG_PAGECACHE: { - /* Designate a buffer for page cache memory space */ + /* EVIDENCE-OF: R-18761-36601 There are three arguments to + ** SQLITE_CONFIG_PAGECACHE: A pointer to 8-byte aligned memory (pMem), + ** the size of each page cache line (sz), and the number of cache lines + ** (N). */ sqlite3GlobalConfig.pPage = va_arg(ap, void*); sqlite3GlobalConfig.szPage = va_arg(ap, int); sqlite3GlobalConfig.nPage = va_arg(ap, int); break; } + case SQLITE_CONFIG_PCACHE_HDRSZ: { + /* EVIDENCE-OF: R-39100-27317 The SQLITE_CONFIG_PCACHE_HDRSZ option takes + ** a single parameter which is a pointer to an integer and writes into + ** that integer the number of extra bytes per page required for each page + ** in SQLITE_CONFIG_PAGECACHE. */ + *va_arg(ap, int*) = + sqlite3HeaderSizeBtree() + + sqlite3HeaderSizePcache() + + sqlite3HeaderSizePcache1(); + break; + } case SQLITE_CONFIG_PCACHE: { /* no-op */ @@ -119855,11 +139894,18 @@ SQLITE_API int sqlite3_config(int op, ...){ } case SQLITE_CONFIG_PCACHE2: { - /* Specify an alternative page cache implementation */ + /* EVIDENCE-OF: R-63325-48378 The SQLITE_CONFIG_PCACHE2 option takes a + ** single argument which is a pointer to an sqlite3_pcache_methods2 + ** object. This object specifies the interface to a custom page cache + ** implementation. */ sqlite3GlobalConfig.pcache2 = *va_arg(ap, sqlite3_pcache_methods2*); break; } case SQLITE_CONFIG_GETPCACHE2: { + /* EVIDENCE-OF: R-22035-46182 The SQLITE_CONFIG_GETPCACHE2 option takes a + ** single argument which is a pointer to an sqlite3_pcache_methods2 + ** object. SQLite copies of the current page cache implementation into + ** that object. */ if( sqlite3GlobalConfig.pcache2.xInit==0 ){ sqlite3PCacheSetDefault(); } @@ -119867,9 +139913,15 @@ SQLITE_API int sqlite3_config(int op, ...){ break; } +/* EVIDENCE-OF: R-06626-12911 The SQLITE_CONFIG_HEAP option is only +** available if SQLite is compiled with either SQLITE_ENABLE_MEMSYS3 or +** SQLITE_ENABLE_MEMSYS5 and returns SQLITE_ERROR if invoked otherwise. */ #if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5) case SQLITE_CONFIG_HEAP: { - /* Designate a buffer for heap memory space */ + /* EVIDENCE-OF: R-19854-42126 There are three arguments to + ** SQLITE_CONFIG_HEAP: An 8-byte aligned pointer to the memory, the + ** number of bytes in the memory buffer, and the minimum allocation size. + */ sqlite3GlobalConfig.pHeap = va_arg(ap, void*); sqlite3GlobalConfig.nHeap = va_arg(ap, int); sqlite3GlobalConfig.mnReq = va_arg(ap, int); @@ -119882,17 +139934,19 @@ SQLITE_API int sqlite3_config(int op, ...){ } if( sqlite3GlobalConfig.pHeap==0 ){ - /* If the heap pointer is NULL, then restore the malloc implementation - ** back to NULL pointers too. This will cause the malloc to go - ** back to its default implementation when sqlite3_initialize() is - ** run. + /* EVIDENCE-OF: R-49920-60189 If the first pointer (the memory pointer) + ** is NULL, then SQLite reverts to using its default memory allocator + ** (the system malloc() implementation), undoing any prior invocation of + ** SQLITE_CONFIG_MALLOC. + ** + ** Setting sqlite3GlobalConfig.m to all zeros will cause malloc to + ** revert to its default implementation when sqlite3_initialize() is run */ memset(&sqlite3GlobalConfig.m, 0, sizeof(sqlite3GlobalConfig.m)); }else{ - /* The heap pointer is not NULL, then install one of the - ** mem5.c/mem3.c methods. The enclosing #if guarantees at - ** least one of these methods is currently enabled. - */ + /* EVIDENCE-OF: R-61006-08918 If the memory pointer is not NULL then the + ** alternative memory allocator is engaged to handle all of SQLites + ** memory allocation needs. */ #ifdef SQLITE_ENABLE_MEMSYS3 sqlite3GlobalConfig.m = *sqlite3MemGetMemsys3(); #endif @@ -119925,12 +139979,25 @@ SQLITE_API int sqlite3_config(int op, ...){ break; } + /* EVIDENCE-OF: R-55548-33817 The compile-time setting for URI filenames + ** can be changed at start-time using the + ** sqlite3_config(SQLITE_CONFIG_URI,1) or + ** sqlite3_config(SQLITE_CONFIG_URI,0) configuration calls. + */ case SQLITE_CONFIG_URI: { + /* EVIDENCE-OF: R-25451-61125 The SQLITE_CONFIG_URI option takes a single + ** argument of type int. If non-zero, then URI handling is globally + ** enabled. If the parameter is zero, then URI handling is globally + ** disabled. */ sqlite3GlobalConfig.bOpenUri = va_arg(ap, int); break; } case SQLITE_CONFIG_COVERING_INDEX_SCAN: { + /* EVIDENCE-OF: R-36592-02772 The SQLITE_CONFIG_COVERING_INDEX_SCAN + ** option takes a single integer argument which is interpreted as a + ** boolean in order to enable or disable the use of covering indices for + ** full table scans in the query optimizer. */ sqlite3GlobalConfig.bUseCis = va_arg(ap, int); break; } @@ -119945,25 +140012,50 @@ SQLITE_API int sqlite3_config(int op, ...){ #endif case SQLITE_CONFIG_MMAP_SIZE: { + /* EVIDENCE-OF: R-58063-38258 SQLITE_CONFIG_MMAP_SIZE takes two 64-bit + ** integer (sqlite3_int64) values that are the default mmap size limit + ** (the default setting for PRAGMA mmap_size) and the maximum allowed + ** mmap size limit. */ sqlite3_int64 szMmap = va_arg(ap, sqlite3_int64); sqlite3_int64 mxMmap = va_arg(ap, sqlite3_int64); + /* EVIDENCE-OF: R-53367-43190 If either argument to this option is + ** negative, then that argument is changed to its compile-time default. + ** + ** EVIDENCE-OF: R-34993-45031 The maximum allowed mmap size will be + ** silently truncated if necessary so that it does not exceed the + ** compile-time maximum mmap size set by the SQLITE_MAX_MMAP_SIZE + ** compile-time option. + */ if( mxMmap<0 || mxMmap>SQLITE_MAX_MMAP_SIZE ){ mxMmap = SQLITE_MAX_MMAP_SIZE; } - sqlite3GlobalConfig.mxMmap = mxMmap; if( szMmap<0 ) szMmap = SQLITE_DEFAULT_MMAP_SIZE; if( szMmap>mxMmap) szMmap = mxMmap; + sqlite3GlobalConfig.mxMmap = mxMmap; sqlite3GlobalConfig.szMmap = szMmap; break; } -#if SQLITE_OS_WIN && defined(SQLITE_WIN32_MALLOC) +#if SQLITE_OS_WIN && defined(SQLITE_WIN32_MALLOC) /* IMP: R-04780-55815 */ case SQLITE_CONFIG_WIN32_HEAPSIZE: { + /* EVIDENCE-OF: R-34926-03360 SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit + ** unsigned integer value that specifies the maximum size of the created + ** heap. */ sqlite3GlobalConfig.nHeap = va_arg(ap, int); break; } #endif + case SQLITE_CONFIG_PMASZ: { + sqlite3GlobalConfig.szPma = va_arg(ap, unsigned int); + break; + } + + case SQLITE_CONFIG_STMTJRNL_SPILL: { + sqlite3GlobalConfig.nStmtSpill = va_arg(ap, int); + break; + } + default: { rc = SQLITE_ERROR; break; @@ -119985,6 +140077,7 @@ SQLITE_API int sqlite3_config(int op, ...){ ** the lookaside memory. */ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ +#ifndef SQLITE_OMIT_LOOKASIDE void *pStart; if( db->lookaside.nOut ){ return SQLITE_BUSY; @@ -120027,14 +140120,15 @@ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ p = (LookasideSlot*)&((u8*)p)[sz]; } db->lookaside.pEnd = p; - db->lookaside.bEnabled = 1; + db->lookaside.bDisable = 0; db->lookaside.bMalloced = pBuf==0 ?1:0; }else{ db->lookaside.pStart = db; db->lookaside.pEnd = db; - db->lookaside.bEnabled = 0; + db->lookaside.bDisable = 1; db->lookaside.bMalloced = 0; } +#endif /* SQLITE_OMIT_LOOKASIDE */ return SQLITE_OK; } @@ -120042,6 +140136,12 @@ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ ** Return the mutex associated with a database connection. */ SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return db->mutex; } @@ -120051,6 +140151,10 @@ SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){ */ SQLITE_API int sqlite3_db_release_memory(sqlite3 *db){ int i; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); sqlite3BtreeEnterAll(db); for(i=0; inDb; i++){ @@ -120065,6 +140169,36 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3 *db){ return SQLITE_OK; } +/* +** Flush any dirty pages in the pager-cache for any attached database +** to disk. +*/ +SQLITE_API int sqlite3_db_cacheflush(sqlite3 *db){ + int i; + int rc = SQLITE_OK; + int bSeenBusy = 0; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif + sqlite3_mutex_enter(db->mutex); + sqlite3BtreeEnterAll(db); + for(i=0; rc==SQLITE_OK && inDb; i++){ + Btree *pBt = db->aDb[i].pBt; + if( pBt && sqlite3BtreeIsInTrans(pBt) ){ + Pager *pPager = sqlite3BtreePager(pBt); + rc = sqlite3PagerFlush(pPager); + if( rc==SQLITE_BUSY ){ + bSeenBusy = 1; + rc = SQLITE_OK; + } + } + } + sqlite3BtreeLeaveAll(db); + sqlite3_mutex_leave(db->mutex); + return ((rc==SQLITE_OK && bSeenBusy) ? SQLITE_BUSY : rc); +} + /* ** Configuration settings for an individual database connection */ @@ -120073,6 +140207,11 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ int rc; va_start(ap, op); switch( op ){ + case SQLITE_DBCONFIG_MAINDBNAME: { + db->aDb[0].zDbSName = va_arg(ap,char*); + rc = SQLITE_OK; + break; + } case SQLITE_DBCONFIG_LOOKASIDE: { void *pBuf = va_arg(ap, void*); /* IMP: R-26835-10964 */ int sz = va_arg(ap, int); /* IMP: R-47871-25994 */ @@ -120085,8 +140224,11 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){ int op; /* The opcode */ u32 mask; /* Mask of the bit in sqlite3.flags to set/clear */ } aFlagOp[] = { - { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys }, - { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger }, + { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys }, + { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger }, + { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer }, + { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension }, + { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE, SQLITE_NoCkptOnClose }, }; unsigned int i; rc = SQLITE_ERROR; /* IMP: R-42790-23372 */ @@ -120140,13 +140282,20 @@ static int binCollFunc( ){ int rc, n; n = nKey1lastRowid; } @@ -120188,6 +140343,12 @@ SQLITE_API sqlite_int64 sqlite3_last_insert_rowid(sqlite3 *db){ ** Return the number of changes in the most recent call to sqlite3_exec(). */ SQLITE_API int sqlite3_changes(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return db->nChange; } @@ -120195,6 +140356,12 @@ SQLITE_API int sqlite3_changes(sqlite3 *db){ ** Return the number of changes since the database handle was opened. */ SQLITE_API int sqlite3_total_changes(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return db->nTotalChange; } @@ -120221,7 +140388,7 @@ SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *db){ ** with SQLITE_ANY as the encoding. */ static void functionDestroy(sqlite3 *db, FuncDef *p){ - FuncDestructor *pDestructor = p->pDestructor; + FuncDestructor *pDestructor = p->u.pDestructor; if( pDestructor ){ pDestructor->nRef--; if( pDestructor->nRef==0 ){ @@ -120238,17 +140405,24 @@ static void functionDestroy(sqlite3 *db, FuncDef *p){ static void disconnectAllVtab(sqlite3 *db){ #ifndef SQLITE_OMIT_VIRTUALTABLE int i; + HashElem *p; sqlite3BtreeEnterAll(db); for(i=0; inDb; i++){ Schema *pSchema = db->aDb[i].pSchema; if( db->aDb[i].pSchema ){ - HashElem *p; for(p=sqliteHashFirst(&pSchema->tblHash); p; p=sqliteHashNext(p)){ Table *pTab = (Table *)sqliteHashData(p); if( IsVirtual(pTab) ) sqlite3VtabDisconnect(db, pTab); } } } + for(p=sqliteHashFirst(&db->aModule); p; p=sqliteHashNext(p)){ + Module *pMod = (Module *)sqliteHashData(p); + if( pMod->pEpoTab ){ + sqlite3VtabDisconnect(db, pMod->pEpoTab); + } + } + sqlite3VtabUnlockList(db); sqlite3BtreeLeaveAll(db); #else UNUSED_PARAMETER(db); @@ -120275,12 +140449,17 @@ static int connectionIsBusy(sqlite3 *db){ */ static int sqlite3Close(sqlite3 *db, int forceZombie){ if( !db ){ + /* EVIDENCE-OF: R-63257-11740 Calling sqlite3_close() or + ** sqlite3_close_v2() with a NULL pointer argument is a harmless no-op. */ return SQLITE_OK; } if( !sqlite3SafetyCheckSickOrOk(db) ){ return SQLITE_MISUSE_BKPT; } sqlite3_mutex_enter(db->mutex); + if( db->mTrace & SQLITE_TRACE_CLOSE ){ + db->xTrace(SQLITE_TRACE_CLOSE, db->pTraceArg, db, 0); + } /* Force xDisconnect calls on all virtual tables */ disconnectAllVtab(db); @@ -120298,7 +140477,7 @@ static int sqlite3Close(sqlite3 *db, int forceZombie){ ** SQLITE_BUSY if the connection can not be closed immediately. */ if( !forceZombie && connectionIsBusy(db) ){ - sqlite3Error(db, SQLITE_BUSY, "unable to close due to unfinalized " + sqlite3ErrorWithMsg(db, SQLITE_BUSY, "unable to close due to unfinalized " "statements or unfinished backups"); sqlite3_mutex_leave(db->mutex); return SQLITE_BUSY; @@ -120394,18 +140573,17 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ */ sqlite3ConnectionClosed(db); - for(j=0; jaFunc.a); j++){ - FuncDef *pNext, *pHash, *p; - for(p=db->aFunc.a[j]; p; p=pHash){ - pHash = p->pHash; - while( p ){ - functionDestroy(db, p); - pNext = p->pNext; - sqlite3DbFree(db, p); - p = pNext; - } - } + for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){ + FuncDef *pNext, *p; + p = sqliteHashData(i); + do{ + functionDestroy(db, p); + pNext = p->pNext; + sqlite3DbFree(db, p); + p = pNext; + }while( p ); } + sqlite3HashClear(&db->aFunc); for(i=sqliteHashFirst(&db->aCollSeq); i; i=sqliteHashNext(i)){ CollSeq *pColl = (CollSeq *)sqliteHashData(i); /* Invoke any destructors registered for collation sequence user data. */ @@ -120423,14 +140601,19 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ if( pMod->xDestroy ){ pMod->xDestroy(pMod->pAux); } + sqlite3VtabEponymousTableClear(db, pMod); sqlite3DbFree(db, pMod); } sqlite3HashClear(&db->aModule); #endif - sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */ + sqlite3Error(db, SQLITE_OK); /* Deallocates any cached error strings. */ sqlite3ValueFree(db->pErr); sqlite3CloseExtensions(db); +#if SQLITE_USER_AUTHENTICATION + sqlite3_free(db->auth.zAuthUser); + sqlite3_free(db->auth.zAuthPW); +#endif db->magic = SQLITE_MAGIC_ERROR; @@ -120453,13 +140636,15 @@ SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3 *db){ /* ** Rollback all database files. If tripCode is not SQLITE_OK, then -** any open cursors are invalidated ("tripped" - as in "tripping a circuit +** any write cursors are invalidated ("tripped" - as in "tripping a circuit ** breaker") and made to return tripCode if there are any further -** attempts to use that cursor. +** attempts to use that cursor. Read cursors remain open and valid +** but are "saved" in case the table pages are moved around. */ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ int i; int inTrans = 0; + int schemaChange; assert( sqlite3_mutex_held(db->mutex) ); sqlite3BeginBenignMalloc(); @@ -120470,6 +140655,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ ** the database rollback and schema reset, which can cause false ** corruption reports in some cases. */ sqlite3BtreeEnterAll(db); + schemaChange = (db->flags & SQLITE_InternChanges)!=0 && db->init.busy==0; for(i=0; inDb; i++){ Btree *p = db->aDb[i].pBt; @@ -120477,7 +140663,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ if( sqlite3BtreeIsInTrans(p) ){ inTrans = 1; } - sqlite3BtreeRollback(p, tripCode); + sqlite3BtreeRollback(p, tripCode, !schemaChange); } } sqlite3VtabRollback(db); @@ -120504,7 +140690,7 @@ SQLITE_PRIVATE void sqlite3RollbackAll(sqlite3 *db, int tripCode){ ** Return a static string containing the name corresponding to the error code ** specified in the argument. */ -#if defined(SQLITE_TEST) +#if defined(SQLITE_NEED_ERR_NAME) SQLITE_PRIVATE const char *sqlite3ErrName(int rc){ const char *zName = 0; int i, origRc = rc; @@ -120539,7 +140725,6 @@ SQLITE_PRIVATE const char *sqlite3ErrName(int rc){ case SQLITE_IOERR_UNLOCK: zName = "SQLITE_IOERR_UNLOCK"; break; case SQLITE_IOERR_RDLOCK: zName = "SQLITE_IOERR_RDLOCK"; break; case SQLITE_IOERR_DELETE: zName = "SQLITE_IOERR_DELETE"; break; - case SQLITE_IOERR_BLOCKED: zName = "SQLITE_IOERR_BLOCKED"; break; case SQLITE_IOERR_NOMEM: zName = "SQLITE_IOERR_NOMEM"; break; case SQLITE_IOERR_ACCESS: zName = "SQLITE_IOERR_ACCESS"; break; case SQLITE_IOERR_CHECKRESERVEDLOCK: @@ -120671,7 +140856,7 @@ static int sqliteDefaultBusyCallback( void *ptr, /* Database connection */ int count /* Number of times table has been busy */ ){ -#if SQLITE_OS_WIN || (defined(HAVE_USLEEP) && HAVE_USLEEP) +#if SQLITE_OS_WIN || HAVE_USLEEP static const u8 delays[] = { 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 }; static const u8 totals[] = @@ -120734,6 +140919,9 @@ SQLITE_API int sqlite3_busy_handler( int (*xBusy)(void*,int), void *pArg ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); db->busyHandler.xFunc = xBusy; db->busyHandler.pArg = pArg; @@ -120755,6 +140943,12 @@ SQLITE_API void sqlite3_progress_handler( int (*xProgress)(void*), void *pArg ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return; + } +#endif sqlite3_mutex_enter(db->mutex); if( nOps>0 ){ db->xProgress = xProgress; @@ -120775,6 +140969,9 @@ SQLITE_API void sqlite3_progress_handler( ** specified number of milliseconds before returning 0. */ SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif if( ms>0 ){ sqlite3_busy_handler(db, sqliteDefaultBusyCallback, (void*)db); db->busyTimeout = ms; @@ -120788,6 +140985,12 @@ SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){ ** Cause any pending operation to stop at its earliest opportunity. */ SQLITE_API void sqlite3_interrupt(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) && (db==0 || db->magic!=SQLITE_MAGIC_ZOMBIE) ){ + (void)SQLITE_MISUSE_BKPT; + return; + } +#endif db->u1.isInterrupted = 1; } @@ -120804,7 +141007,7 @@ SQLITE_PRIVATE int sqlite3CreateFunc( int nArg, int enc, void *pUserData, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), + void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), void (*xStep)(sqlite3_context*,int,sqlite3_value **), void (*xFinal)(sqlite3_context*), FuncDestructor *pDestructor @@ -120815,9 +141018,9 @@ SQLITE_PRIVATE int sqlite3CreateFunc( assert( sqlite3_mutex_held(db->mutex) ); if( zFunctionName==0 || - (xFunc && (xFinal || xStep)) || - (!xFunc && (xFinal && !xStep)) || - (!xFunc && (!xFinal && xStep)) || + (xSFunc && (xFinal || xStep)) || + (!xSFunc && (xFinal && !xStep)) || + (!xSFunc && (!xFinal && xStep)) || (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG) || (255<(nName = sqlite3Strlen30( zFunctionName))) ){ return SQLITE_MISUSE_BKPT; @@ -120840,10 +141043,10 @@ SQLITE_PRIVATE int sqlite3CreateFunc( }else if( enc==SQLITE_ANY ){ int rc; rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF8|extraFlags, - pUserData, xFunc, xStep, xFinal, pDestructor); + pUserData, xSFunc, xStep, xFinal, pDestructor); if( rc==SQLITE_OK ){ rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF16LE|extraFlags, - pUserData, xFunc, xStep, xFinal, pDestructor); + pUserData, xSFunc, xStep, xFinal, pDestructor); } if( rc!=SQLITE_OK ){ return rc; @@ -120859,10 +141062,10 @@ SQLITE_PRIVATE int sqlite3CreateFunc( ** is being overridden/deleted but there are no active VMs, allow the ** operation to continue but invalidate all precompiled statements. */ - p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 0); + p = sqlite3FindFunction(db, zFunctionName, nArg, (u8)enc, 0); if( p && (p->funcFlags & SQLITE_FUNC_ENCMASK)==enc && p->nArg==nArg ){ if( db->nVdbeActive ){ - sqlite3Error(db, SQLITE_BUSY, + sqlite3ErrorWithMsg(db, SQLITE_BUSY, "unable to delete/modify user-function due to active statements"); assert( !db->mallocFailed ); return SQLITE_BUSY; @@ -120871,10 +141074,10 @@ SQLITE_PRIVATE int sqlite3CreateFunc( } } - p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 1); + p = sqlite3FindFunction(db, zFunctionName, nArg, (u8)enc, 1); assert(p || db->mallocFailed); if( !p ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } /* If an older version of the function with a configured destructor is @@ -120884,11 +141087,10 @@ SQLITE_PRIVATE int sqlite3CreateFunc( if( pDestructor ){ pDestructor->nRef++; } - p->pDestructor = pDestructor; + p->u.pDestructor = pDestructor; p->funcFlags = (p->funcFlags & SQLITE_FUNC_ENCMASK) | extraFlags; testcase( p->funcFlags & SQLITE_DETERMINISTIC ); - p->xFunc = xFunc; - p->xStep = xStep; + p->xSFunc = xSFunc ? xSFunc : xStep; p->xFinalize = xFinal; p->pUserData = pUserData; p->nArg = (u16)nArg; @@ -120904,11 +141106,11 @@ SQLITE_API int sqlite3_create_function( int nArg, int enc, void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), + void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), void (*xStep)(sqlite3_context*,int,sqlite3_value **), void (*xFinal)(sqlite3_context*) ){ - return sqlite3_create_function_v2(db, zFunc, nArg, enc, p, xFunc, xStep, + return sqlite3_create_function_v2(db, zFunc, nArg, enc, p, xSFunc, xStep, xFinal, 0); } @@ -120918,13 +141120,19 @@ SQLITE_API int sqlite3_create_function_v2( int nArg, int enc, void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), + void (*xSFunc)(sqlite3_context*,int,sqlite3_value **), void (*xStep)(sqlite3_context*,int,sqlite3_value **), void (*xFinal)(sqlite3_context*), void (*xDestroy)(void *) ){ int rc = SQLITE_ERROR; FuncDestructor *pArg = 0; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + return SQLITE_MISUSE_BKPT; + } +#endif sqlite3_mutex_enter(db->mutex); if( xDestroy ){ pArg = (FuncDestructor *)sqlite3DbMallocZero(db, sizeof(FuncDestructor)); @@ -120935,7 +141143,7 @@ SQLITE_API int sqlite3_create_function_v2( pArg->xDestroy = xDestroy; pArg->pUserData = p; } - rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, xFunc, xStep, xFinal, pArg); + rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, xSFunc, xStep, xFinal, pArg); if( pArg && pArg->nRef==0 ){ assert( rc!=SQLITE_OK ); xDestroy(p); @@ -120955,16 +141163,20 @@ SQLITE_API int sqlite3_create_function16( int nArg, int eTextRep, void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), + void (*xSFunc)(sqlite3_context*,int,sqlite3_value**), void (*xStep)(sqlite3_context*,int,sqlite3_value**), void (*xFinal)(sqlite3_context*) ){ int rc; char *zFunc8; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zFunctionName==0 ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); assert( !db->mallocFailed ); zFunc8 = sqlite3Utf16to8(db, zFunctionName, -1, SQLITE_UTF16NATIVE); - rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xFunc, xStep, xFinal,0); + rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xSFunc,xStep,xFinal,0); sqlite3DbFree(db, zFunc8); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); @@ -120990,10 +141202,15 @@ SQLITE_API int sqlite3_overload_function( const char *zName, int nArg ){ - int nName = sqlite3Strlen30(zName); int rc = SQLITE_OK; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zName==0 || nArg<-2 ){ + return SQLITE_MISUSE_BKPT; + } +#endif sqlite3_mutex_enter(db->mutex); - if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){ + if( sqlite3FindFunction(db, zName, nArg, SQLITE_UTF8, 0)==0 ){ rc = sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8, 0, sqlite3InvalidFunction, 0, 0, 0); } @@ -121011,15 +141228,50 @@ SQLITE_API int sqlite3_overload_function( ** trace is a pointer to a function that is invoked at the start of each ** SQL statement. */ -SQLITE_API void *sqlite3_trace(sqlite3 *db, void (*xTrace)(void*,const char*), void *pArg){ +#ifndef SQLITE_OMIT_DEPRECATED +SQLITE_API void *sqlite3_trace(sqlite3 *db, void(*xTrace)(void*,const char*), void *pArg){ void *pOld; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pOld = db->pTraceArg; - db->xTrace = xTrace; + db->mTrace = xTrace ? SQLITE_TRACE_LEGACY : 0; + db->xTrace = (int(*)(u32,void*,void*,void*))xTrace; db->pTraceArg = pArg; sqlite3_mutex_leave(db->mutex); return pOld; } +#endif /* SQLITE_OMIT_DEPRECATED */ + +/* Register a trace callback using the version-2 interface. +*/ +SQLITE_API int sqlite3_trace_v2( + sqlite3 *db, /* Trace this connection */ + unsigned mTrace, /* Mask of events to be traced */ + int(*xTrace)(unsigned,void*,void*,void*), /* Callback to invoke */ + void *pArg /* Context */ +){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + return SQLITE_MISUSE_BKPT; + } +#endif + sqlite3_mutex_enter(db->mutex); + if( mTrace==0 ) xTrace = 0; + if( xTrace==0 ) mTrace = 0; + db->mTrace = mTrace; + db->xTrace = xTrace; + db->pTraceArg = pArg; + sqlite3_mutex_leave(db->mutex); + return SQLITE_OK; +} + +#ifndef SQLITE_OMIT_DEPRECATED /* ** Register a profile function. The pArg from the previously registered ** profile function is returned. @@ -121034,6 +141286,13 @@ SQLITE_API void *sqlite3_profile( void *pArg ){ void *pOld; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pOld = db->pProfileArg; db->xProfile = xProfile; @@ -121041,6 +141300,7 @@ SQLITE_API void *sqlite3_profile( sqlite3_mutex_leave(db->mutex); return pOld; } +#endif /* SQLITE_OMIT_DEPRECATED */ #endif /* SQLITE_OMIT_TRACE */ /* @@ -121054,6 +141314,13 @@ SQLITE_API void *sqlite3_commit_hook( void *pArg /* Argument to the function */ ){ void *pOld; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pOld = db->pCommitArg; db->xCommitCallback = xCallback; @@ -121072,6 +141339,13 @@ SQLITE_API void *sqlite3_update_hook( void *pArg /* Argument to the function */ ){ void *pRet; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pRet = db->pUpdateArg; db->xUpdateCallback = xCallback; @@ -121090,6 +141364,13 @@ SQLITE_API void *sqlite3_rollback_hook( void *pArg /* Argument to the function */ ){ void *pRet; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pRet = db->pRollbackArg; db->xRollbackCallback = xCallback; @@ -121098,6 +141379,27 @@ SQLITE_API void *sqlite3_rollback_hook( return pRet; } +#ifdef SQLITE_ENABLE_PREUPDATE_HOOK +/* +** Register a callback to be invoked each time a row is updated, +** inserted or deleted using this database connection. +*/ +SQLITE_API void *sqlite3_preupdate_hook( + sqlite3 *db, /* Attach the hook to this database */ + void(*xCallback)( /* Callback function */ + void*,sqlite3*,int,char const*,char const*,sqlite3_int64,sqlite3_int64), + void *pArg /* First callback argument */ +){ + void *pRet; + sqlite3_mutex_enter(db->mutex); + pRet = db->pPreUpdateArg; + db->xPreUpdateCallback = xCallback; + db->pPreUpdateArg = pArg; + sqlite3_mutex_leave(db->mutex); + return pRet; +} +#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */ + #ifndef SQLITE_OMIT_WAL /* ** The sqlite3_wal_hook() callback registered by sqlite3_wal_autocheckpoint(). @@ -121136,6 +141438,9 @@ SQLITE_API int sqlite3_wal_autocheckpoint(sqlite3 *db, int nFrame){ UNUSED_PARAMETER(db); UNUSED_PARAMETER(nFrame); #else +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif if( nFrame>0 ){ sqlite3_wal_hook(db, sqlite3WalDefaultHook, SQLITE_INT_TO_PTR(nFrame)); }else{ @@ -121156,6 +141461,12 @@ SQLITE_API void *sqlite3_wal_hook( ){ #ifndef SQLITE_OMIT_WAL void *pRet; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif sqlite3_mutex_enter(db->mutex); pRet = db->pWalArg; db->xWalCallback = xCallback; @@ -121183,14 +141494,21 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( int rc; /* Return code */ int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif + /* Initialize the output variables to -1 in case an error occurs. */ if( pnLog ) *pnLog = -1; if( pnCkpt ) *pnCkpt = -1; - assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE ); - assert( SQLITE_CHECKPOINT_FULLSQLITE_CHECKPOINT_RESTART ){ + assert( SQLITE_CHECKPOINT_PASSIVE==0 ); + assert( SQLITE_CHECKPOINT_FULL==1 ); + assert( SQLITE_CHECKPOINT_RESTART==2 ); + assert( SQLITE_CHECKPOINT_TRUNCATE==3 ); + if( eModeSQLITE_CHECKPOINT_TRUNCATE ){ + /* EVIDENCE-OF: R-03996-12088 The M parameter must be a valid checkpoint + ** mode: */ return SQLITE_MISUSE; } @@ -121200,12 +141518,20 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( } if( iDb<0 ){ rc = SQLITE_ERROR; - sqlite3Error(db, SQLITE_ERROR, "unknown database: %s", zDb); + sqlite3ErrorWithMsg(db, SQLITE_ERROR, "unknown database: %s", zDb); }else{ + db->busyHandler.nBusy = 0; rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt); - sqlite3Error(db, rc, 0); + sqlite3Error(db, rc); } rc = sqlite3ApiExit(db, rc); + + /* If there are no active statements, clear the interrupt flag at this + ** point. */ + if( db->nVdbeActive==0 ){ + db->u1.isInterrupted = 0; + } + sqlite3_mutex_leave(db->mutex); return rc; #endif @@ -121218,7 +141544,9 @@ SQLITE_API int sqlite3_wal_checkpoint_v2( ** checkpointed. */ SQLITE_API int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){ - return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0); + /* EVIDENCE-OF: R-41613-20553 The sqlite3_wal_checkpoint(D,X) is equivalent to + ** sqlite3_wal_checkpoint_v2(D,X,SQLITE_CHECKPOINT_PASSIVE,0,0). */ + return sqlite3_wal_checkpoint_v2(db,zDb,SQLITE_CHECKPOINT_PASSIVE,0,0); } #ifndef SQLITE_OMIT_WAL @@ -121293,9 +141621,11 @@ SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3 *db){ return ( db->temp_store!=1 ); #endif #if SQLITE_TEMP_STORE==3 + UNUSED_PARAMETER(db); return 1; #endif #if SQLITE_TEMP_STORE<1 || SQLITE_TEMP_STORE>3 + UNUSED_PARAMETER(db); return 0; #endif } @@ -121307,14 +141637,14 @@ SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3 *db){ SQLITE_API const char *sqlite3_errmsg(sqlite3 *db){ const char *z; if( !db ){ - return sqlite3ErrStr(SQLITE_NOMEM); + return sqlite3ErrStr(SQLITE_NOMEM_BKPT); } if( !sqlite3SafetyCheckSickOrOk(db) ){ return sqlite3ErrStr(SQLITE_MISUSE_BKPT); } sqlite3_mutex_enter(db->mutex); if( db->mallocFailed ){ - z = sqlite3ErrStr(SQLITE_NOMEM); + z = sqlite3ErrStr(SQLITE_NOMEM_BKPT); }else{ testcase( db->pErr==0 ); z = (char*)sqlite3_value_text(db->pErr); @@ -121358,7 +141688,7 @@ SQLITE_API const void *sqlite3_errmsg16(sqlite3 *db){ }else{ z = sqlite3_value_text16(db->pErr); if( z==0 ){ - sqlite3Error(db, db->errCode, sqlite3ErrStr(db->errCode)); + sqlite3ErrorWithMsg(db, db->errCode, sqlite3ErrStr(db->errCode)); z = sqlite3_value_text16(db->pErr); } /* A malloc() may have failed within the call to sqlite3_value_text16() @@ -121366,7 +141696,7 @@ SQLITE_API const void *sqlite3_errmsg16(sqlite3 *db){ ** be cleared before returning. Do this directly, instead of via ** sqlite3ApiExit(), to avoid setting the database handle error message. */ - db->mallocFailed = 0; + sqlite3OomClear(db); } sqlite3_mutex_leave(db->mutex); return z; @@ -121382,7 +141712,7 @@ SQLITE_API int sqlite3_errcode(sqlite3 *db){ return SQLITE_MISUSE_BKPT; } if( !db || db->mallocFailed ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } return db->errCode & db->errMask; } @@ -121391,10 +141721,13 @@ SQLITE_API int sqlite3_extended_errcode(sqlite3 *db){ return SQLITE_MISUSE_BKPT; } if( !db || db->mallocFailed ){ - return SQLITE_NOMEM; + return SQLITE_NOMEM_BKPT; } return db->errCode; } +SQLITE_API int sqlite3_system_errno(sqlite3 *db){ + return db ? db->iSysErrno : 0; +} /* ** Return a string that describes the kind of error specified in the @@ -121405,32 +141738,6 @@ SQLITE_API const char *sqlite3_errstr(int rc){ return sqlite3ErrStr(rc); } -/* -** Invalidate all cached KeyInfo objects for database connection "db" -*/ -static void invalidateCachedKeyInfo(sqlite3 *db){ - Db *pDb; /* A single database */ - int iDb; /* The database index number */ - HashElem *k; /* For looping over tables in pDb */ - Table *pTab; /* A table in the database */ - Index *pIdx; /* Each index */ - - for(iDb=0, pDb=db->aDb; iDbnDb; iDb++, pDb++){ - if( pDb->pBt==0 ) continue; - sqlite3BtreeEnter(pDb->pBt); - for(k=sqliteHashFirst(&pDb->pSchema->tblHash); k; k=sqliteHashNext(k)){ - pTab = (Table*)sqliteHashData(k); - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->pKeyInfo && pIdx->pKeyInfo->db==db ){ - sqlite3KeyInfoUnref(pIdx->pKeyInfo); - pIdx->pKeyInfo = 0; - } - } - } - sqlite3BtreeLeave(pDb->pBt); - } -} - /* ** Create a new collating function for database "db". The name is zName ** and the encoding is enc. @@ -121445,7 +141752,6 @@ static int createCollation( ){ CollSeq *pColl; int enc2; - int nName = sqlite3Strlen30(zName); assert( sqlite3_mutex_held(db->mutex) ); @@ -121470,12 +141776,11 @@ static int createCollation( pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 0); if( pColl && pColl->xCmp ){ if( db->nVdbeActive ){ - sqlite3Error(db, SQLITE_BUSY, + sqlite3ErrorWithMsg(db, SQLITE_BUSY, "unable to delete/modify collation sequence due to active statements"); return SQLITE_BUSY; } sqlite3ExpirePreparedStatements(db); - invalidateCachedKeyInfo(db); /* If collation sequence pColl was created directly by a call to ** sqlite3_create_collation, and not generated by synthCollSeq(), @@ -121484,7 +141789,7 @@ static int createCollation( ** to be called. */ if( (pColl->enc & ~SQLITE_UTF16_ALIGNED)==enc2 ){ - CollSeq *aColl = sqlite3HashFind(&db->aCollSeq, zName, nName); + CollSeq *aColl = sqlite3HashFind(&db->aCollSeq, zName); int j; for(j=0; j<3; j++){ CollSeq *p = &aColl[j]; @@ -121499,12 +141804,12 @@ static int createCollation( } pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 1); - if( pColl==0 ) return SQLITE_NOMEM; + if( pColl==0 ) return SQLITE_NOMEM_BKPT; pColl->xCmp = xCompare; pColl->pUser = pCtx; pColl->xDel = xDel; pColl->enc = (u8)(enc2 | (enc & SQLITE_UTF16_ALIGNED)); - sqlite3Error(db, SQLITE_OK, 0); + sqlite3Error(db, SQLITE_OK); return SQLITE_OK; } @@ -121524,8 +141829,9 @@ static const int aHardLimit[] = { SQLITE_MAX_FUNCTION_ARG, SQLITE_MAX_ATTACHED, SQLITE_MAX_LIKE_PATTERN_LENGTH, - SQLITE_MAX_VARIABLE_NUMBER, + SQLITE_MAX_VARIABLE_NUMBER, /* IMP: R-38091-32352 */ SQLITE_MAX_TRIGGER_DEPTH, + SQLITE_MAX_WORKER_THREADS, }; /* @@ -121546,11 +141852,11 @@ static const int aHardLimit[] = { #if SQLITE_MAX_VDBE_OP<40 # error SQLITE_MAX_VDBE_OP must be at least 40 #endif -#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>1000 -# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 1000 +#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>127 +# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 127 #endif -#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>62 -# error SQLITE_MAX_ATTACHED must be between 0 and 62 +#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>125 +# error SQLITE_MAX_ATTACHED must be between 0 and 125 #endif #if SQLITE_MAX_LIKE_PATTERN_LENGTH<1 # error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1 @@ -121561,6 +141867,9 @@ static const int aHardLimit[] = { #if SQLITE_MAX_TRIGGER_DEPTH<1 # error SQLITE_MAX_TRIGGER_DEPTH must be at least 1 #endif +#if SQLITE_MAX_WORKER_THREADS<0 || SQLITE_MAX_WORKER_THREADS>50 +# error SQLITE_MAX_WORKER_THREADS must be between 0 and 50 +#endif /* @@ -121576,6 +141885,12 @@ static const int aHardLimit[] = { SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){ int oldLimit; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return -1; + } +#endif /* EVIDENCE-OF: R-30189-54097 For each limit category SQLITE_LIMIT_NAME ** there is a hard upper bound set at compile-time by a C preprocessor @@ -121594,7 +141909,8 @@ SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){ SQLITE_MAX_LIKE_PATTERN_LENGTH ); assert( aHardLimit[SQLITE_LIMIT_VARIABLE_NUMBER]==SQLITE_MAX_VARIABLE_NUMBER); assert( aHardLimit[SQLITE_LIMIT_TRIGGER_DEPTH]==SQLITE_MAX_TRIGGER_DEPTH ); - assert( SQLITE_LIMIT_TRIGGER_DEPTH==(SQLITE_N_LIMIT-1) ); + assert( aHardLimit[SQLITE_LIMIT_WORKER_THREADS]==SQLITE_MAX_WORKER_THREADS ); + assert( SQLITE_LIMIT_WORKER_THREADS==(SQLITE_N_LIMIT-1) ); if( limitId<0 || limitId>=SQLITE_N_LIMIT ){ @@ -121651,25 +141967,38 @@ SQLITE_PRIVATE int sqlite3ParseUri( assert( *pzErrMsg==0 ); - if( ((flags & SQLITE_OPEN_URI) || sqlite3GlobalConfig.bOpenUri) - && nUri>=5 && memcmp(zUri, "file:", 5)==0 + if( ((flags & SQLITE_OPEN_URI) /* IMP: R-48725-32206 */ + || sqlite3GlobalConfig.bOpenUri) /* IMP: R-51689-46548 */ + && nUri>=5 && memcmp(zUri, "file:", 5)==0 /* IMP: R-57884-37496 */ ){ char *zOpt; int eState; /* Parser state when parsing URI */ int iIn; /* Input character index */ int iOut = 0; /* Output character index */ - int nByte = nUri+2; /* Bytes of space to allocate */ + u64 nByte = nUri+2; /* Bytes of space to allocate */ /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen ** method that there may be extra parameters following the file-name. */ flags |= SQLITE_OPEN_URI; for(iIn=0; iIn=0 && octet<256 ); if( octet==0 ){ +#ifndef SQLITE_ENABLE_URI_00_ERROR /* This branch is taken when "%00" appears within the URI. In this ** case we ignore all text in the remainder of the path, name or ** value currently being parsed. So ignore the current character @@ -121717,6 +142047,12 @@ SQLITE_PRIVATE int sqlite3ParseUri( iIn++; } continue; +#else + /* If ENABLE_URI_00_ERROR is defined, "%00" in a URI is an error. */ + *pzErrMsg = sqlite3_mprintf("unexpected %%00 in uri"); + rc = SQLITE_ERROR; + goto parse_uri_out; +#endif } c = octet; }else if( eState==1 && (c=='&' || c=='=') ){ @@ -121819,9 +142155,11 @@ SQLITE_PRIVATE int sqlite3ParseUri( } }else{ - zFile = sqlite3_malloc(nUri+2); - if( !zFile ) return SQLITE_NOMEM; - memcpy(zFile, zUri, nUri); + zFile = sqlite3_malloc64(nUri+2); + if( !zFile ) return SQLITE_NOMEM_BKPT; + if( nUri ){ + memcpy(zFile, zUri, nUri); + } zFile[nUri] = '\0'; zFile[nUri+1] = '\0'; flags &= ~SQLITE_OPEN_URI; @@ -121860,6 +142198,9 @@ static int openDatabase( char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */ char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */ +#ifdef SQLITE_ENABLE_API_ARMOR + if( ppDb==0 ) return SQLITE_MISUSE_BKPT; +#endif *ppDb = 0; #ifndef SQLITE_OMIT_AUTOINIT rc = sqlite3_initialize(); @@ -121882,7 +142223,9 @@ static int openDatabase( testcase( (1<<(flags&7))==0x02 ); /* READONLY */ testcase( (1<<(flags&7))==0x04 ); /* READWRITE */ testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */ - if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE_BKPT; + if( ((1<<(flags&7)) & 0x46)==0 ){ + return SQLITE_MISUSE_BKPT; /* IMP: R-65497-44594 */ + } if( sqlite3GlobalConfig.bCoreMutex==0 ){ isThreadsafe = 0; @@ -121941,14 +142284,19 @@ static int openDatabase( assert( sizeof(db->aLimit)==sizeof(aHardLimit) ); memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit)); + db->aLimit[SQLITE_LIMIT_WORKER_THREADS] = SQLITE_DEFAULT_WORKER_THREADS; db->autoCommit = 1; db->nextAutovac = -1; db->szMmap = sqlite3GlobalConfig.szMmap; db->nextPagesize = 0; + db->nMaxSorterMmap = 0x7FFFFFFF; db->flags |= SQLITE_ShortColNames | SQLITE_EnableTrigger | SQLITE_CacheSpill #if !defined(SQLITE_DEFAULT_AUTOMATIC_INDEX) || SQLITE_DEFAULT_AUTOMATIC_INDEX | SQLITE_AutoIndex #endif +#if SQLITE_DEFAULT_CKPTFULLFSYNC + | SQLITE_CkptFullFSync +#endif #if SQLITE_DEFAULT_FILE_FORMAT<4 | SQLITE_LegacyFileFmt #endif @@ -121960,6 +142308,15 @@ static int openDatabase( #endif #if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS | SQLITE_ForeignKeys +#endif +#if defined(SQLITE_REVERSE_UNORDERED_SELECTS) + | SQLITE_ReverseOrder +#endif +#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) + | SQLITE_CellSizeCk +#endif +#if defined(SQLITE_ENABLE_FTS3_TOKENIZER) + | SQLITE_Fts3Tokenizer #endif ; sqlite3HashInit(&db->aCollSeq); @@ -121970,26 +142327,30 @@ static int openDatabase( /* Add the default collation sequence BINARY. BINARY works for both UTF-8 ** and UTF-16, so add a version for each to avoid any unnecessary ** conversions. The only error that can occur here is a malloc() failure. + ** + ** EVIDENCE-OF: R-52786-44878 SQLite defines three built-in collating + ** functions: */ - createCollation(db, "BINARY", SQLITE_UTF8, 0, binCollFunc, 0); - createCollation(db, "BINARY", SQLITE_UTF16BE, 0, binCollFunc, 0); - createCollation(db, "BINARY", SQLITE_UTF16LE, 0, binCollFunc, 0); + createCollation(db, sqlite3StrBINARY, SQLITE_UTF8, 0, binCollFunc, 0); + createCollation(db, sqlite3StrBINARY, SQLITE_UTF16BE, 0, binCollFunc, 0); + createCollation(db, sqlite3StrBINARY, SQLITE_UTF16LE, 0, binCollFunc, 0); + createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0); createCollation(db, "RTRIM", SQLITE_UTF8, (void*)1, binCollFunc, 0); if( db->mallocFailed ){ goto opendb_out; } - db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 0); + /* EVIDENCE-OF: R-08308-17224 The default collating function for all + ** strings is BINARY. + */ + db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, sqlite3StrBINARY, 0); assert( db->pDfltColl!=0 ); - /* Also add a UTF-8 case-insensitive collation sequence. */ - createCollation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc, 0); - /* Parse the filename/URI argument. */ db->openFlags = flags; rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg); if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM ) db->mallocFailed = 1; - sqlite3Error(db, rc, zErrMsg ? "%s" : 0, zErrMsg); + if( rc==SQLITE_NOMEM ) sqlite3OomFault(db); + sqlite3ErrorWithMsg(db, rc, zErrMsg ? "%s" : 0, zErrMsg); sqlite3_free(zErrMsg); goto opendb_out; } @@ -121999,22 +142360,24 @@ static int openDatabase( flags | SQLITE_OPEN_MAIN_DB); if( rc!=SQLITE_OK ){ if( rc==SQLITE_IOERR_NOMEM ){ - rc = SQLITE_NOMEM; + rc = SQLITE_NOMEM_BKPT; } - sqlite3Error(db, rc, 0); + sqlite3Error(db, rc); goto opendb_out; } + sqlite3BtreeEnter(db->aDb[0].pBt); db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt); + if( !db->mallocFailed ) ENC(db) = SCHEMA_ENC(db); + sqlite3BtreeLeave(db->aDb[0].pBt); db->aDb[1].pSchema = sqlite3SchemaGet(db, 0); - - /* The default safety_level for the main database is 'full'; for the temp - ** database it is 'NONE'. This matches the pager layer defaults. + /* The default safety_level for the main database is FULL; for the temp + ** database it is OFF. This matches the pager layer defaults. */ - db->aDb[0].zName = "main"; - db->aDb[0].safety_level = 3; - db->aDb[1].zName = "temp"; - db->aDb[1].safety_level = 1; + db->aDb[0].zDbSName = "main"; + db->aDb[0].safety_level = SQLITE_DEFAULT_SYNCHRONOUS+1; + db->aDb[1].zDbSName = "temp"; + db->aDb[1].safety_level = PAGER_SYNCHRONOUS_OFF; db->magic = SQLITE_MAGIC_OPEN; if( db->mallocFailed ){ @@ -122025,13 +142388,22 @@ static int openDatabase( ** database schema yet. This is delayed until the first time the database ** is accessed. */ - sqlite3Error(db, SQLITE_OK, 0); - sqlite3RegisterBuiltinFunctions(db); + sqlite3Error(db, SQLITE_OK); + sqlite3RegisterPerConnectionBuiltinFunctions(db); + rc = sqlite3_errcode(db); + +#ifdef SQLITE_ENABLE_FTS5 + /* Register any built-in FTS5 module before loading the automatic + ** extensions. This allows automatic extensions to register FTS5 + ** tokenizers and auxiliary functions. */ + if( !db->mallocFailed && rc==SQLITE_OK ){ + rc = sqlite3Fts5Init(db); + } +#endif /* Load automatic extensions - extensions that have been registered ** using the sqlite3_automatic_extension() API. */ - rc = sqlite3_errcode(db); if( rc==SQLITE_OK ){ sqlite3AutoLoadExtensions(db); rc = sqlite3_errcode(db); @@ -122054,7 +142426,7 @@ static int openDatabase( } #endif -#ifdef SQLITE_ENABLE_FTS3 +#ifdef SQLITE_ENABLE_FTS3 /* automatically defined by SQLITE_ENABLE_FTS4 */ if( !db->mallocFailed && rc==SQLITE_OK ){ rc = sqlite3Fts3Init(db); } @@ -122072,6 +142444,18 @@ static int openDatabase( } #endif +#ifdef SQLITE_ENABLE_DBSTAT_VTAB + if( !db->mallocFailed && rc==SQLITE_OK){ + rc = sqlite3DbstatRegister(db); + } +#endif + +#ifdef SQLITE_ENABLE_JSON1 + if( !db->mallocFailed && rc==SQLITE_OK){ + rc = sqlite3Json1Init(db); + } +#endif + /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking ** mode. -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking ** mode. Doing nothing at all also makes NORMAL the default. @@ -122082,7 +142466,7 @@ static int openDatabase( SQLITE_DEFAULT_LOCKING_MODE); #endif - if( rc ) sqlite3Error(db, rc, 0); + if( rc ) sqlite3Error(db, rc); /* Enable the lookaside-malloc subsystem */ setupLookaside(db, 0, sqlite3GlobalConfig.szLookaside, @@ -122091,9 +142475,9 @@ static int openDatabase( sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT); opendb_out: - sqlite3_free(zOpen); if( db ){ - assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 ); + assert( db->mutex!=0 || isThreadsafe==0 + || sqlite3GlobalConfig.bFullMutex==0 ); sqlite3_mutex_leave(db->mutex); } rc = sqlite3_errcode(db); @@ -122112,7 +142496,23 @@ opendb_out: sqlite3GlobalConfig.xSqllog(pArg, db, zFilename, 0); } #endif - return sqlite3ApiExit(0, rc); +#if defined(SQLITE_HAS_CODEC) + if( rc==SQLITE_OK ){ + const char *zHexKey = sqlite3_uri_parameter(zOpen, "hexkey"); + if( zHexKey && zHexKey[0] ){ + u8 iByte; + int i; + char zKey[40]; + for(i=0, iByte=0; imutex); - assert( !db->mallocFailed ); - rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, 0); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; + return sqlite3_create_collation_v2(db, zName, enc, pCtx, xCompare, 0); } /* @@ -122203,6 +142599,10 @@ SQLITE_API int sqlite3_create_collation_v2( void(*xDel)(void*) ){ int rc; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); assert( !db->mallocFailed ); rc = createCollation(db, zName, (u8)enc, pCtx, xCompare, xDel); @@ -122224,6 +142624,10 @@ SQLITE_API int sqlite3_create_collation16( ){ int rc = SQLITE_OK; char *zName8; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zName==0 ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); assert( !db->mallocFailed ); zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE); @@ -122246,6 +142650,9 @@ SQLITE_API int sqlite3_collation_needed( void *pCollNeededArg, void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*) ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); db->xCollNeeded = xCollNeeded; db->xCollNeeded16 = 0; @@ -122264,6 +142671,9 @@ SQLITE_API int sqlite3_collation_needed16( void *pCollNeededArg, void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*) ){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); db->xCollNeeded = 0; db->xCollNeeded16 = xCollNeeded16; @@ -122290,13 +142700,19 @@ SQLITE_API int sqlite3_global_recover(void){ ** by the next COMMIT or ROLLBACK. */ SQLITE_API int sqlite3_get_autocommit(sqlite3 *db){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif return db->autoCommit; } /* -** The following routines are subtitutes for constants SQLITE_CORRUPT, -** SQLITE_MISUSE, SQLITE_CANTOPEN, SQLITE_IOERR and possibly other error -** constants. They server two purposes: +** The following routines are substitutes for constants SQLITE_CORRUPT, +** SQLITE_MISUSE, SQLITE_CANTOPEN, SQLITE_NOMEM and possibly other error +** constants. They serve two purposes: ** ** 1. Serve as a convenient place to set a breakpoint in a debugger ** to detect when version error conditions occurs. @@ -122304,28 +142720,33 @@ SQLITE_API int sqlite3_get_autocommit(sqlite3 *db){ ** 2. Invoke sqlite3_log() to provide the source code location where ** a low-level error is first detected. */ +static int reportError(int iErr, int lineno, const char *zType){ + sqlite3_log(iErr, "%s at line %d of [%.10s]", + zType, lineno, 20+sqlite3_sourceid()); + return iErr; +} SQLITE_PRIVATE int sqlite3CorruptError(int lineno){ testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_CORRUPT, - "database corruption at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_CORRUPT; + return reportError(SQLITE_CORRUPT, lineno, "database corruption"); } SQLITE_PRIVATE int sqlite3MisuseError(int lineno){ testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_MISUSE, - "misuse at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_MISUSE; + return reportError(SQLITE_MISUSE, lineno, "misuse"); } SQLITE_PRIVATE int sqlite3CantopenError(int lineno){ testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_CANTOPEN, - "cannot open file at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_CANTOPEN; + return reportError(SQLITE_CANTOPEN, lineno, "cannot open file"); } - +#ifdef SQLITE_DEBUG +SQLITE_PRIVATE int sqlite3NomemError(int lineno){ + testcase( sqlite3GlobalConfig.xLog!=0 ); + return reportError(SQLITE_NOMEM, lineno, "OOM"); +} +SQLITE_PRIVATE int sqlite3IoerrnomemError(int lineno){ + testcase( sqlite3GlobalConfig.xLog!=0 ); + return reportError(SQLITE_IOERR_NOMEM, lineno, "I/O OOM error"); +} +#endif #ifndef SQLITE_OMIT_DEPRECATED /* @@ -122343,7 +142764,6 @@ SQLITE_API void sqlite3_thread_cleanup(void){ ** Return meta information about a specific column of a database table. ** See comment in sqlite3.h (sqlite.h.in) for details. */ -#ifdef SQLITE_ENABLE_COLUMN_METADATA SQLITE_API int sqlite3_table_column_metadata( sqlite3 *db, /* Connection handle */ const char *zDbName, /* Database name or NULL */ @@ -122359,14 +142779,20 @@ SQLITE_API int sqlite3_table_column_metadata( char *zErrMsg = 0; Table *pTab = 0; Column *pCol = 0; - int iCol; - + int iCol = 0; char const *zDataType = 0; char const *zCollSeq = 0; int notnull = 0; int primarykey = 0; int autoinc = 0; + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) || zTableName==0 ){ + return SQLITE_MISUSE_BKPT; + } +#endif + /* Ensure the database schema has been loaded */ sqlite3_mutex_enter(db->mutex); sqlite3BtreeEnterAll(db); @@ -122383,11 +142809,8 @@ SQLITE_API int sqlite3_table_column_metadata( } /* Find the column for which info is requested */ - if( sqlite3IsRowid(zColumnName) ){ - iCol = pTab->iPKey; - if( iCol>=0 ){ - pCol = &pTab->aCol[iCol]; - } + if( zColumnName==0 ){ + /* Query for existance of table only */ }else{ for(iCol=0; iColnCol; iCol++){ pCol = &pTab->aCol[iCol]; @@ -122396,8 +142819,13 @@ SQLITE_API int sqlite3_table_column_metadata( } } if( iCol==pTab->nCol ){ - pTab = 0; - goto error_out; + if( HasRowid(pTab) && sqlite3IsRowid(zColumnName) ){ + iCol = pTab->iPKey; + pCol = iCol>=0 ? &pTab->aCol[iCol] : 0; + }else{ + pTab = 0; + goto error_out; + } } } @@ -122412,7 +142840,7 @@ SQLITE_API int sqlite3_table_column_metadata( ** explicitly declared column. Copy meta information from *pCol. */ if( pCol ){ - zDataType = pCol->zType; + zDataType = sqlite3ColumnType(pCol,0); zCollSeq = pCol->zColl; notnull = pCol->notNull!=0; primarykey = (pCol->colFlags & COLFLAG_PRIMKEY)!=0; @@ -122422,7 +142850,7 @@ SQLITE_API int sqlite3_table_column_metadata( primarykey = 1; } if( !zCollSeq ){ - zCollSeq = "BINARY"; + zCollSeq = sqlite3StrBINARY; } error_out: @@ -122444,13 +142872,12 @@ error_out: zColumnName); rc = SQLITE_ERROR; } - sqlite3Error(db, rc, (zErrMsg?"%s":0), zErrMsg); + sqlite3ErrorWithMsg(db, rc, (zErrMsg?"%s":0), zErrMsg); sqlite3DbFree(db, zErrMsg); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; } -#endif /* ** Sleep for a little while. Return the amount of time slept. @@ -122472,6 +142899,9 @@ SQLITE_API int sqlite3_sleep(int ms){ ** Enable or disable the extended result codes. */ SQLITE_API int sqlite3_extended_result_codes(sqlite3 *db, int onoff){ +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); db->errMask = onoff ? 0xffffffff : 0xff; sqlite3_mutex_leave(db->mutex); @@ -122485,6 +142915,9 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo int rc = SQLITE_ERROR; Btree *pBtree; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; +#endif sqlite3_mutex_enter(db->mutex); pBtree = sqlite3DbNameToBtree(db, zDbName); if( pBtree ){ @@ -122498,6 +142931,12 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo if( op==SQLITE_FCNTL_FILE_POINTER ){ *(sqlite3_file**)pArg = fd; rc = SQLITE_OK; + }else if( op==SQLITE_FCNTL_VFS_POINTER ){ + *(sqlite3_vfs**)pArg = sqlite3PagerVfs(pPager); + rc = SQLITE_OK; + }else if( op==SQLITE_FCNTL_JOURNAL_POINTER ){ + *(sqlite3_file**)pArg = sqlite3PagerJrnlFile(pPager); + rc = SQLITE_OK; }else if( fd->pMethods ){ rc = sqlite3OsFileControl(fd, op, pArg); }else{ @@ -122506,7 +142945,7 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo sqlite3BtreeLeave(pBtree); } sqlite3_mutex_leave(db->mutex); - return rc; + return rc; } /* @@ -122514,7 +142953,9 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo */ SQLITE_API int sqlite3_test_control(int op, ...){ int rc = 0; -#ifndef SQLITE_OMIT_BUILTIN_TEST +#ifdef SQLITE_UNTESTABLE + UNUSED_PARAMETER(op); +#else va_list ap; va_start(ap, op); switch( op ){ @@ -122562,6 +143003,28 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } + /* + ** sqlite3_test_control(FAULT_INSTALL, xCallback) + ** + ** Arrange to invoke xCallback() whenever sqlite3FaultSim() is called, + ** if xCallback is not NULL. + ** + ** As a test of the fault simulator mechanism itself, sqlite3FaultSim(0) + ** is called immediately after installing the new callback and the return + ** value from sqlite3FaultSim(0) becomes the return from + ** sqlite3_test_control(). + */ + case SQLITE_TESTCTRL_FAULT_INSTALL: { + /* MSVC is picky about pulling func ptrs from va lists. + ** http://support.microsoft.com/kb/47961 + ** sqlite3GlobalConfig.xTestCallback = va_arg(ap, int(*)(int)); + */ + typedef int(*TESTCALLBACKFUNC_t)(int); + sqlite3GlobalConfig.xTestCallback = va_arg(ap, TESTCALLBACKFUNC_t); + rc = sqlite3FaultSim(0); + break; + } + /* ** sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd) ** @@ -122588,7 +143051,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){ ** IMPORTANT: Changing the PENDING byte from 0x40000000 results in ** an incompatible database file format. Changing the PENDING byte ** while any database connection is open results in undefined and - ** dileterious behavior. + ** deleterious behavior. */ case SQLITE_TESTCTRL_PENDING_BYTE: { rc = PENDING_BYTE; @@ -122614,7 +143077,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){ */ case SQLITE_TESTCTRL_ASSERT: { volatile int x = 0; - assert( (x = va_arg(ap,int))!=0 ); + assert( /*side-effects-ok*/ (x = va_arg(ap,int))!=0 ); rc = x; break; } @@ -122653,6 +143116,22 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } + /* + ** sqlite3_test_control(SQLITE_TESTCTRL_BYTEORDER); + ** + ** The integer returned reveals the byte-order of the computer on which + ** SQLite is running: + ** + ** 1 big-endian, determined at run-time + ** 10 little-endian, determined at run-time + ** 432101 big-endian, determined at compile-time + ** 123410 little-endian, determined at compile-time + */ + case SQLITE_TESTCTRL_BYTEORDER: { + rc = SQLITE_BYTEORDER*100 + SQLITE_LITTLEENDIAN*10 + SQLITE_BIGENDIAN; + break; + } + /* sqlite3_test_control(SQLITE_TESTCTRL_RESERVE, sqlite3 *db, int N) ** ** Set the nReserve size to N for the main database on the database @@ -122727,22 +143206,6 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } -#if defined(SQLITE_ENABLE_TREE_EXPLAIN) - /* sqlite3_test_control(SQLITE_TESTCTRL_EXPLAIN_STMT, - ** sqlite3_stmt*,const char**); - ** - ** If compiled with SQLITE_ENABLE_TREE_EXPLAIN, each sqlite3_stmt holds - ** a string that describes the optimized parse tree. This test-control - ** returns a pointer to that string. - */ - case SQLITE_TESTCTRL_EXPLAIN_STMT: { - sqlite3_stmt *pStmt = va_arg(ap, sqlite3_stmt*); - const char **pzRet = va_arg(ap, const char**); - *pzRet = sqlite3VdbeExplanation((Vdbe*)pStmt); - break; - } -#endif - /* sqlite3_test_control(SQLITE_TESTCTRL_NEVER_CORRUPT, int); ** ** Set or clear a flag that indicates that the database file is always well- @@ -122756,9 +143219,78 @@ SQLITE_API int sqlite3_test_control(int op, ...){ break; } + /* Set the threshold at which OP_Once counters reset back to zero. + ** By default this is 0x7ffffffe (over 2 billion), but that value is + ** too big to test in a reasonable amount of time, so this control is + ** provided to set a small and easily reachable reset value. + */ + case SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD: { + sqlite3GlobalConfig.iOnceResetThreshold = va_arg(ap, int); + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_VDBE_COVERAGE, xCallback, ptr); + ** + ** Set the VDBE coverage callback function to xCallback with context + ** pointer ptr. + */ + case SQLITE_TESTCTRL_VDBE_COVERAGE: { +#ifdef SQLITE_VDBE_COVERAGE + typedef void (*branch_callback)(void*,int,u8,u8); + sqlite3GlobalConfig.xVdbeBranch = va_arg(ap,branch_callback); + sqlite3GlobalConfig.pVdbeBranchArg = va_arg(ap,void*); +#endif + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_SORTER_MMAP, db, nMax); */ + case SQLITE_TESTCTRL_SORTER_MMAP: { + sqlite3 *db = va_arg(ap, sqlite3*); + db->nMaxSorterMmap = va_arg(ap, int); + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_ISINIT); + ** + ** Return SQLITE_OK if SQLite has been initialized and SQLITE_ERROR if + ** not. + */ + case SQLITE_TESTCTRL_ISINIT: { + if( sqlite3GlobalConfig.isInit==0 ) rc = SQLITE_ERROR; + break; + } + + /* sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, db, dbName, onOff, tnum); + ** + ** This test control is used to create imposter tables. "db" is a pointer + ** to the database connection. dbName is the database name (ex: "main" or + ** "temp") which will receive the imposter. "onOff" turns imposter mode on + ** or off. "tnum" is the root page of the b-tree to which the imposter + ** table should connect. + ** + ** Enable imposter mode only when the schema has already been parsed. Then + ** run a single CREATE TABLE statement to construct the imposter table in + ** the parsed schema. Then turn imposter mode back off again. + ** + ** If onOff==0 and tnum>0 then reset the schema for all databases, causing + ** the schema to be reparsed the next time it is needed. This has the + ** effect of erasing all imposter tables. + */ + case SQLITE_TESTCTRL_IMPOSTER: { + sqlite3 *db = va_arg(ap, sqlite3*); + sqlite3_mutex_enter(db->mutex); + db->init.iDb = sqlite3FindDbName(db, va_arg(ap,const char*)); + db->init.busy = db->init.imposterTable = va_arg(ap,int); + db->init.newTnum = va_arg(ap,int); + if( db->init.busy==0 && db->init.newTnum>0 ){ + sqlite3ResetAllSchemasOfConnection(db); + } + sqlite3_mutex_leave(db->mutex); + break; + } } va_end(ap); -#endif /* SQLITE_OMIT_BUILTIN_TEST */ +#endif /* SQLITE_UNTESTABLE */ return rc; } @@ -122774,7 +143306,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){ ** returns a NULL pointer. */ SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){ - if( zFilename==0 ) return 0; + if( zFilename==0 || zParam==0 ) return 0; zFilename += sqlite3Strlen30(zFilename) + 1; while( zFilename[0] ){ int x = strcmp(zFilename, zParam); @@ -122804,7 +143336,7 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64( ){ const char *z = sqlite3_uri_parameter(zFilename, zParam); sqlite3_int64 v; - if( z && sqlite3Atoi64(z, &v, sqlite3Strlen30(z), SQLITE_UTF8)==SQLITE_OK ){ + if( z && sqlite3DecOrHexToI64(z, &v)==SQLITE_OK ){ bDflt = v; } return bDflt; @@ -122814,15 +143346,8 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64( ** Return the Btree pointer identified by zDbName. Return NULL if not found. */ SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3 *db, const char *zDbName){ - int i; - for(i=0; inDb; i++){ - if( db->aDb[i].pBt - && (zDbName==0 || sqlite3StrICmp(zDbName, db->aDb[i].zName)==0) - ){ - return db->aDb[i].pBt; - } - } - return 0; + int iDb = zDbName ? sqlite3FindDbName(db, zDbName) : 0; + return iDb<0 ? 0 : db->aDb[iDb].pBt; } /* @@ -122830,7 +143355,14 @@ SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3 *db, const char *zDbName){ ** connection. */ SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName){ - Btree *pBt = sqlite3DbNameToBtree(db, zDbName); + Btree *pBt; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return 0; + } +#endif + pBt = sqlite3DbNameToBtree(db, zDbName); return pBt ? sqlite3BtreeGetFilename(pBt) : 0; } @@ -122839,10 +143371,132 @@ SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName){ ** no such database exists. */ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName){ - Btree *pBt = sqlite3DbNameToBtree(db, zDbName); - return pBt ? sqlite3PagerIsreadonly(sqlite3BtreePager(pBt)) : -1; + Btree *pBt; +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + (void)SQLITE_MISUSE_BKPT; + return -1; + } +#endif + pBt = sqlite3DbNameToBtree(db, zDbName); + return pBt ? sqlite3BtreeIsReadonly(pBt) : -1; } +#ifdef SQLITE_ENABLE_SNAPSHOT +/* +** Obtain a snapshot handle for the snapshot of database zDb currently +** being read by handle db. +*/ +SQLITE_API int sqlite3_snapshot_get( + sqlite3 *db, + const char *zDb, + sqlite3_snapshot **ppSnapshot +){ + int rc = SQLITE_ERROR; +#ifndef SQLITE_OMIT_WAL + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + return SQLITE_MISUSE_BKPT; + } +#endif + sqlite3_mutex_enter(db->mutex); + + if( db->autoCommit==0 ){ + int iDb = sqlite3FindDbName(db, zDb); + if( iDb==0 || iDb>1 ){ + Btree *pBt = db->aDb[iDb].pBt; + if( 0==sqlite3BtreeIsInTrans(pBt) ){ + rc = sqlite3BtreeBeginTrans(pBt, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3PagerSnapshotGet(sqlite3BtreePager(pBt), ppSnapshot); + } + } + } + } + + sqlite3_mutex_leave(db->mutex); +#endif /* SQLITE_OMIT_WAL */ + return rc; +} + +/* +** Open a read-transaction on the snapshot idendified by pSnapshot. +*/ +SQLITE_API int sqlite3_snapshot_open( + sqlite3 *db, + const char *zDb, + sqlite3_snapshot *pSnapshot +){ + int rc = SQLITE_ERROR; +#ifndef SQLITE_OMIT_WAL + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + return SQLITE_MISUSE_BKPT; + } +#endif + sqlite3_mutex_enter(db->mutex); + if( db->autoCommit==0 ){ + int iDb; + iDb = sqlite3FindDbName(db, zDb); + if( iDb==0 || iDb>1 ){ + Btree *pBt = db->aDb[iDb].pBt; + if( 0==sqlite3BtreeIsInReadTrans(pBt) ){ + rc = sqlite3PagerSnapshotOpen(sqlite3BtreePager(pBt), pSnapshot); + if( rc==SQLITE_OK ){ + rc = sqlite3BtreeBeginTrans(pBt, 0); + sqlite3PagerSnapshotOpen(sqlite3BtreePager(pBt), 0); + } + } + } + } + + sqlite3_mutex_leave(db->mutex); +#endif /* SQLITE_OMIT_WAL */ + return rc; +} + +/* +** Recover as many snapshots as possible from the wal file associated with +** schema zDb of database db. +*/ +SQLITE_API int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb){ + int rc = SQLITE_ERROR; + int iDb; +#ifndef SQLITE_OMIT_WAL + +#ifdef SQLITE_ENABLE_API_ARMOR + if( !sqlite3SafetyCheckOk(db) ){ + return SQLITE_MISUSE_BKPT; + } +#endif + + sqlite3_mutex_enter(db->mutex); + iDb = sqlite3FindDbName(db, zDb); + if( iDb==0 || iDb>1 ){ + Btree *pBt = db->aDb[iDb].pBt; + if( 0==sqlite3BtreeIsInReadTrans(pBt) ){ + rc = sqlite3BtreeBeginTrans(pBt, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3PagerSnapshotRecover(sqlite3BtreePager(pBt)); + sqlite3BtreeCommit(pBt); + } + } + } + sqlite3_mutex_leave(db->mutex); +#endif /* SQLITE_OMIT_WAL */ + return rc; +} + +/* +** Free a snapshot handle obtained from sqlite3_snapshot_get(). +*/ +SQLITE_API void sqlite3_snapshot_free(sqlite3_snapshot *pSnapshot){ + sqlite3_free(pSnapshot); +} +#endif /* SQLITE_ENABLE_SNAPSHOT */ + /************** End of main.c ************************************************/ /************** Begin file notify.c ******************************************/ /* @@ -122860,6 +143514,8 @@ SQLITE_API int sqlite3_db_readonly(sqlite3 *db, const char *zDbName){ ** This file contains the implementation of the sqlite3_unlock_notify() ** API method and its associated functionality. */ +/* #include "sqliteInt.h" */ +/* #include "btreeInt.h" */ /* Omit this entire file if SQLITE_ENABLE_UNLOCK_NOTIFY is not defined. */ #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY @@ -123029,7 +143685,7 @@ SQLITE_API int sqlite3_unlock_notify( leaveMutex(); assert( !db->mallocFailed ); - sqlite3Error(db, rc, (rc?"database is deadlocked":0)); + sqlite3ErrorWithMsg(db, rc, (rc?"database is deadlocked":0)); sqlite3_mutex_leave(db->mutex); return rc; } @@ -123490,6 +144146,12 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ # define NDEBUG 1 #endif +/* FTS3/FTS4 require virtual tables */ +#ifdef SQLITE_OMIT_VIRTUALTABLE +# undef SQLITE_ENABLE_FTS3 +# undef SQLITE_ENABLE_FTS4 +#endif + /* ** FTS4 is really an extension for FTS3. It is enabled using the ** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all @@ -123503,9 +144165,11 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){ /* If not building as part of the core, include sqlite3ext.h. */ #ifndef SQLITE_CORE +/* # include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT3 #endif +/* #include "sqlite3.h" */ /************** Include fts3_tokenizer.h in the middle of fts3Int.h **********/ /************** Begin file fts3_tokenizer.h **********************************/ /* @@ -123534,6 +144198,7 @@ SQLITE_EXTENSION_INIT3 ** If tokenizers are to be allowed to call sqlite3_*() functions, then ** we will need a way to register the API consistently. */ +/* #include "sqlite3.h" */ /* ** Structures used by the tokenizer interface. When a new tokenizer @@ -123884,6 +144549,11 @@ SQLITE_PRIVATE Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const voi #ifdef SQLITE_COVERAGE_TEST # define ALWAYS(x) (1) # define NEVER(X) (0) +#elif defined(SQLITE_DEBUG) +# define ALWAYS(x) sqlite3Fts3Always((x)!=0) +# define NEVER(x) sqlite3Fts3Never((x)!=0) +SQLITE_PRIVATE int sqlite3Fts3Always(int b); +SQLITE_PRIVATE int sqlite3Fts3Never(int b); #else # define ALWAYS(x) (x) # define NEVER(x) (x) @@ -123942,6 +144612,8 @@ typedef struct Fts3DeferredToken Fts3DeferredToken; typedef struct Fts3SegReader Fts3SegReader; typedef struct Fts3MultiSegReader Fts3MultiSegReader; +typedef struct MatchinfoBuffer MatchinfoBuffer; + /* ** A connection to a fulltext index is an instance of the following ** structure. The xCreate and xConnect methods create an instance @@ -123960,20 +144632,21 @@ struct Fts3Table { sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */ char *zContentTbl; /* content=xxx option, or NULL */ char *zLanguageid; /* languageid=xxx option, or NULL */ - u8 bAutoincrmerge; /* True if automerge=1 */ + int nAutoincrmerge; /* Value configured by 'automerge' */ u32 nLeafAdd; /* Number of leaf blocks added this trans */ /* Precompiled statements used by the implementation. Each of these ** statements is run and reset within a single virtual table API call. */ - sqlite3_stmt *aStmt[37]; + sqlite3_stmt *aStmt[40]; + sqlite3_stmt *pSeekStmt; /* Cache for fts3CursorSeekStmt() */ char *zReadExprlist; char *zWriteExprlist; int nNodeSize; /* Soft limit for node size */ u8 bFts4; /* True for FTS4, false for FTS3 */ - u8 bHasStat; /* True if %_stat table exists */ + u8 bHasStat; /* True if %_stat table exists (2==unknown) */ u8 bHasDocsize; /* True if %_docsize table exists */ u8 bDescIdx; /* True if doclists are in reverse order */ u8 bIgnoreSavepoint; /* True to ignore xSavepoint invocations */ @@ -124007,6 +144680,7 @@ struct Fts3Table { int nPendingData; /* Current bytes of pending data */ sqlite_int64 iPrevDocid; /* Docid of most recently inserted document */ int iPrevLangid; /* Langid of recently inserted document */ + int bPrevDelete; /* True if last operation was a delete */ #if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) /* State variables used for validating that the transaction control @@ -124035,6 +144709,7 @@ struct Fts3Cursor { i16 eSearch; /* Search strategy (see below) */ u8 isEof; /* True if at End Of Results */ u8 isRequireSeek; /* True if must seek pStmt to %_content row */ + u8 bSeekStmt; /* True if pStmt is a seek */ sqlite3_stmt *pStmt; /* Prepared statement in use by the cursor */ Fts3Expr *pExpr; /* Parsed MATCH query string */ int iLangid; /* Language being queried for */ @@ -124051,9 +144726,7 @@ struct Fts3Cursor { i64 iMinDocid; /* Minimum docid to return */ i64 iMaxDocid; /* Maximum docid to return */ int isMatchinfoNeeded; /* True when aMatchinfo[] needs filling in */ - u32 *aMatchinfo; /* Information about most recent match */ - int nMatchinfo; /* Number of elements in aMatchinfo[] */ - char *zMatchinfo; /* Matchinfo specification */ + MatchinfoBuffer *pMIBuffer; /* Buffer for matchinfo data */ }; #define FTS3_EVAL_FILTER 0 @@ -124125,6 +144798,11 @@ struct Fts3Phrase { int bIncr; /* True if doclist is loaded incrementally */ int iDoclistToken; + /* Used by sqlite3Fts3EvalPhrasePoslist() if this is a descendent of an + ** OR condition. */ + char *pOrPoslist; + i64 iOrDocid; + /* Variables below this point are populated by fts3_expr.c when parsing ** a MATCH expression. Everything above is part of the evaluation phase. */ @@ -124168,7 +144846,9 @@ struct Fts3Expr { u8 bStart; /* True if iDocid is valid */ u8 bDeferred; /* True if this expression is entirely deferred */ - u32 *aMI; + /* The following are used by the fts3_snippet.c module. */ + int iPhrase; /* Index of this phrase in matchinfo() results */ + u32 *aMI; /* See above */ }; /* @@ -124279,6 +144959,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table*,int,int); ) /* fts3.c */ +SQLITE_PRIVATE void sqlite3Fts3ErrMsg(char**,const char*,...); SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *, sqlite3_int64); SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *, sqlite_int64 *); SQLITE_PRIVATE int sqlite3Fts3GetVarint32(const char *, int *); @@ -124288,6 +144969,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistPrev(int,char*,int,char**,sqlite3_int64*,i SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *); SQLITE_PRIVATE int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *); SQLITE_PRIVATE void sqlite3Fts3CreateStatTable(int*, Fts3Table*); +SQLITE_PRIVATE int sqlite3Fts3EvalTestDeferred(Fts3Cursor *pCsr, int *pRc); /* fts3_tokenizer.c */ SQLITE_PRIVATE const char *sqlite3Fts3NextToken(const char *, int *); @@ -124303,6 +144985,7 @@ SQLITE_PRIVATE void sqlite3Fts3Snippet(sqlite3_context *, Fts3Cursor *, const ch const char *, const char *, int, int ); SQLITE_PRIVATE void sqlite3Fts3Matchinfo(sqlite3_context *, Fts3Cursor *, const char *); +SQLITE_PRIVATE void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p); /* fts3_expr.c */ SQLITE_PRIVATE int sqlite3Fts3ExprParse(sqlite3_tokenizer *, int, @@ -124335,7 +145018,7 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr); SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3*, Fts3Hash *); /* fts3_unicode2.c (functions generated by parsing unicode text files) */ -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int, int); SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int); SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int); @@ -124359,7 +145042,9 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int); /* #include */ /* #include */ +/* #include "fts3.h" */ #ifndef SQLITE_CORE +/* # include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT1 #endif @@ -124368,6 +145053,13 @@ static int fts3EvalStart(Fts3Cursor *pCsr); static int fts3TermSegReaderCursor( Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **); +#ifndef SQLITE_AMALGAMATION +# if defined(SQLITE_DEBUG) +SQLITE_PRIVATE int sqlite3Fts3Always(int b) { assert( b ); return b; } +SQLITE_PRIVATE int sqlite3Fts3Never(int b) { assert( !b ); return b; } +# endif +#endif + /* ** Write a 64-bit variable-length integer to memory starting at p[0]. ** The length of data written will be between 1 and FTS3_VARINT_MAX bytes. @@ -124477,7 +145169,7 @@ SQLITE_PRIVATE void sqlite3Fts3Dequote(char *z){ /* If the first byte was a '[', then the close-quote character is a ']' */ if( quote=='[' ) quote = ']'; - while( ALWAYS(z[iIn]) ){ + while( z[iIn] ){ if( z[iIn]==quote ){ if( z[iIn+1]!=quote ) break; z[iOut++] = quote; @@ -124540,6 +145232,7 @@ static int fts3DisconnectMethod(sqlite3_vtab *pVtab){ assert( p->pSegments==0 ); /* Free any prepared statements held */ + sqlite3_finalize(p->pSeekStmt); for(i=0; iaStmt); i++){ sqlite3_finalize(p->aStmt[i]); } @@ -124556,6 +145249,17 @@ static int fts3DisconnectMethod(sqlite3_vtab *pVtab){ return SQLITE_OK; } +/* +** Write an error message into *pzErr +*/ +SQLITE_PRIVATE void sqlite3Fts3ErrMsg(char **pzErr, const char *zFormat, ...){ + va_list ap; + sqlite3_free(*pzErr); + va_start(ap, zFormat); + *pzErr = sqlite3_vmprintf(zFormat, ap); + va_end(ap); +} + /* ** Construct one or more SQL statements from the format string given ** and then evaluate those statements. The success code is written @@ -124965,11 +145669,16 @@ static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){ ** This function is used when parsing the "prefix=" FTS4 parameter. */ static int fts3GobbleInt(const char **pp, int *pnOut){ + const int MAX_NPREFIX = 10000000; const char *p; /* Iterator pointer */ int nInt = 0; /* Output value */ for(p=*pp; p[0]>='0' && p[0]<='9'; p++){ nInt = nInt * 10 + (p[0] - '0'); + if( nInt>MAX_NPREFIX ){ + nInt = 0; + break; + } } if( p==*pp ) return SQLITE_ERROR; *pnOut = nInt; @@ -125012,7 +145721,6 @@ static int fts3PrefixParameter( aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex); *apIndex = aIndex; - *pnIndex = nIndex; if( !aIndex ){ return SQLITE_NOMEM; } @@ -125022,13 +145730,20 @@ static int fts3PrefixParameter( const char *p = zParam; int i; for(i=1; i=0 ); + if( nPrefix==0 ){ + nIndex--; + i--; + }else{ + aIndex[i].nPrefix = nPrefix; + } p++; } } + *pnIndex = nIndex; return SQLITE_OK; } @@ -125063,7 +145778,8 @@ static int fts3ContentColumns( const char *zTbl, /* Name of content table */ const char ***pazCol, /* OUT: Malloc'd array of column names */ int *pnCol, /* OUT: Size of array *pazCol */ - int *pnStr /* OUT: Bytes of string content */ + int *pnStr, /* OUT: Bytes of string content */ + char **pzErr /* OUT: error message */ ){ int rc = SQLITE_OK; /* Return code */ char *zSql; /* "SELECT *" statement on zTbl */ @@ -125074,6 +145790,9 @@ static int fts3ContentColumns( rc = SQLITE_NOMEM; }else{ rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); + if( rc!=SQLITE_OK ){ + sqlite3Fts3ErrMsg(pzErr, "%s", sqlite3_errmsg(db)); + } } sqlite3_free(zSql); @@ -125152,7 +145871,7 @@ static int fts3InitVtab( const char **aCol; /* Array of column names */ sqlite3_tokenizer *pTokenizer = 0; /* Tokenizer for this table */ - int nIndex; /* Size of aIndex[] array */ + int nIndex = 0; /* Size of aIndex[] array */ struct Fts3Index *aIndex = 0; /* Array of indexes for this table */ /* The results of parsing supported FTS4 key=value options: */ @@ -125240,13 +145959,13 @@ static int fts3InitVtab( } } if( iOpt==SizeofArray(aFts4Opt) ){ - *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z); + sqlite3Fts3ErrMsg(pzErr, "unrecognized parameter: %s", z); rc = SQLITE_ERROR; }else{ switch( iOpt ){ case 0: /* MATCHINFO */ if( strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "fts3", 4) ){ - *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal); + sqlite3Fts3ErrMsg(pzErr, "unrecognized matchinfo: %s", zVal); rc = SQLITE_ERROR; } bNoDocsize = 1; @@ -125274,7 +145993,7 @@ static int fts3InitVtab( if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3)) && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4)) ){ - *pzErr = sqlite3_mprintf("unrecognized order: %s", zVal); + sqlite3Fts3ErrMsg(pzErr, "unrecognized order: %s", zVal); rc = SQLITE_ERROR; } bDescIdx = (zVal[0]=='d' || zVal[0]=='D'); @@ -125325,7 +146044,7 @@ static int fts3InitVtab( if( nCol==0 ){ sqlite3_free((void*)aCol); aCol = 0; - rc = fts3ContentColumns(db, argv[1], zContent, &aCol, &nCol, &nString); + rc = fts3ContentColumns(db, argv[1], zContent,&aCol,&nCol,&nString,pzErr); /* If a languageid= option was specified, remove the language id ** column from the aCol[] array. */ @@ -125360,7 +146079,7 @@ static int fts3InitVtab( rc = fts3PrefixParameter(zPrefix, &nIndex, &aIndex); if( rc==SQLITE_ERROR ){ assert( zPrefix ); - *pzErr = sqlite3_mprintf("error parsing prefix parameter: %s", zPrefix); + sqlite3Fts3ErrMsg(pzErr, "error parsing prefix parameter: %s", zPrefix); } if( rc!=SQLITE_OK ) goto fts3_init_out; @@ -125385,10 +146104,10 @@ static int fts3InitVtab( p->pTokenizer = pTokenizer; p->nMaxPendingData = FTS3_MAX_PENDING_DATA; p->bHasDocsize = (isFts4 && bNoDocsize==0); - p->bHasStat = isFts4; - p->bFts4 = isFts4; - p->bDescIdx = bDescIdx; - p->bAutoincrmerge = 0xff; /* 0xff means setting unknown */ + p->bHasStat = (u8)isFts4; + p->bFts4 = (u8)isFts4; + p->bDescIdx = (u8)bDescIdx; + p->nAutoincrmerge = 0xff; /* 0xff means setting unknown */ p->zContentTbl = zContent; p->zLanguageid = zLanguageid; zContent = 0; @@ -125431,7 +146150,9 @@ static int fts3InitVtab( int n = (int)strlen(p->azColumn[iCol]); for(i=0; iazColumn[iCol], zNot, n) ){ + if( zNot && n==(int)strlen(zNot) + && 0==sqlite3_strnicmp(p->azColumn[iCol], zNot, n) + ){ p->abNotindexed[iCol] = 1; sqlite3_free(zNot); azNotindexed[i] = 0; @@ -125440,7 +146161,7 @@ static int fts3InitVtab( } for(i=0; izReadExprlist = fts3ReadExprList(p, zUncompress, &rc); p->zWriteExprlist = fts3WriteExprList(p, zCompress, &rc); @@ -125465,10 +146186,7 @@ static int fts3InitVtab( ** addition of a %_stat table so that it can use incremental merge. */ if( !isFts4 && !isCreate ){ - int rc2 = SQLITE_OK; - fts3DbExec(&rc2, db, "SELECT 1 FROM %Q.'%q_stat' WHERE id=2", - p->zDb, p->zName); - if( rc2==SQLITE_OK ) p->bHasStat = 1; + p->bHasStat = 2; } /* Figure out the page-size for the database. This is required in order to @@ -125540,6 +146258,19 @@ static void fts3SetEstimatedRows(sqlite3_index_info *pIdxInfo, i64 nRow){ #endif } +/* +** Set the SQLITE_INDEX_SCAN_UNIQUE flag in pIdxInfo->flags. Unless this +** extension is currently being used by a version of SQLite too old to +** support index-info flags. In that case this function is a no-op. +*/ +static void fts3SetUniqueFlag(sqlite3_index_info *pIdxInfo){ +#if SQLITE_VERSION_NUMBER>=3008012 + if( sqlite3_libversion_number()>=3008012 ){ + pIdxInfo->idxFlags |= SQLITE_INDEX_SCAN_UNIQUE; + } +#endif +} + /* ** Implementation of the xBestIndex method for FTS3 tables. There ** are three possible strategies, in order of preference: @@ -125630,6 +146361,9 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ } } + /* If using a docid=? or rowid=? strategy, set the UNIQUE flag. */ + if( pInfo->idxNum==FTS3_DOCID_SEARCH ) fts3SetUniqueFlag(pInfo); + iIdx = 1; if( iCons>=0 ){ pInfo->aConstraintUsage[iCons].argvIndex = iIdx++; @@ -125687,6 +146421,26 @@ static int fts3OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ return SQLITE_OK; } +/* +** Finalize the statement handle at pCsr->pStmt. +** +** Or, if that statement handle is one created by fts3CursorSeekStmt(), +** and the Fts3Table.pSeekStmt slot is currently NULL, save the statement +** pointer there instead of finalizing it. +*/ +static void fts3CursorFinalizeStmt(Fts3Cursor *pCsr){ + if( pCsr->bSeekStmt ){ + Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; + if( p->pSeekStmt==0 ){ + p->pSeekStmt = pCsr->pStmt; + sqlite3_reset(pCsr->pStmt); + pCsr->pStmt = 0; + } + pCsr->bSeekStmt = 0; + } + sqlite3_finalize(pCsr->pStmt); +} + /* ** Close the cursor. For additional information see the documentation ** on the xClose method of the virtual table interface. @@ -125694,11 +146448,11 @@ static int fts3OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ static int fts3CloseMethod(sqlite3_vtab_cursor *pCursor){ Fts3Cursor *pCsr = (Fts3Cursor *)pCursor; assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); - sqlite3_finalize(pCsr->pStmt); + fts3CursorFinalizeStmt(pCsr); sqlite3Fts3ExprFree(pCsr->pExpr); sqlite3Fts3FreeDeferredTokens(pCsr); sqlite3_free(pCsr->aDoclist); - sqlite3_free(pCsr->aMatchinfo); + sqlite3Fts3MIBufferFree(pCsr->pMIBuffer); assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); sqlite3_free(pCsr); return SQLITE_OK; @@ -125712,20 +146466,23 @@ static int fts3CloseMethod(sqlite3_vtab_cursor *pCursor){ ** ** (or the equivalent for a content=xxx table) and set pCsr->pStmt to ** it. If an error occurs, return an SQLite error code. -** -** Otherwise, set *ppStmt to point to pCsr->pStmt and return SQLITE_OK. */ -static int fts3CursorSeekStmt(Fts3Cursor *pCsr, sqlite3_stmt **ppStmt){ +static int fts3CursorSeekStmt(Fts3Cursor *pCsr){ int rc = SQLITE_OK; if( pCsr->pStmt==0 ){ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; char *zSql; - zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist); - if( !zSql ) return SQLITE_NOMEM; - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0); - sqlite3_free(zSql); + if( p->pSeekStmt ){ + pCsr->pStmt = p->pSeekStmt; + p->pSeekStmt = 0; + }else{ + zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist); + if( !zSql ) return SQLITE_NOMEM; + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0); + sqlite3_free(zSql); + } + if( rc==SQLITE_OK ) pCsr->bSeekStmt = 1; } - *ppStmt = pCsr->pStmt; return rc; } @@ -125737,9 +146494,7 @@ static int fts3CursorSeekStmt(Fts3Cursor *pCsr, sqlite3_stmt **ppStmt){ static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){ int rc = SQLITE_OK; if( pCsr->isRequireSeek ){ - sqlite3_stmt *pStmt = 0; - - rc = fts3CursorSeekStmt(pCsr, &pStmt); + rc = fts3CursorSeekStmt(pCsr); if( rc==SQLITE_OK ){ sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId); pCsr->isRequireSeek = 0; @@ -125909,7 +146664,7 @@ static int fts3SelectLeaf( sqlite3_int64 *piLeaf, /* Selected leaf node */ sqlite3_int64 *piLeaf2 /* Selected leaf node */ ){ - int rc; /* Return code */ + int rc = SQLITE_OK; /* Return code */ int iHeight; /* Height of this node in tree */ assert( piLeaf || piLeaf2 ); @@ -125920,7 +146675,7 @@ static int fts3SelectLeaf( if( rc==SQLITE_OK && iHeight>1 ){ char *zBlob = 0; /* Blob read from %_segments table */ - int nBlob; /* Size of zBlob in bytes */ + int nBlob = 0; /* Size of zBlob in bytes */ if( piLeaf && piLeaf2 && (*piLeaf!=*piLeaf2) ){ rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob, 0); @@ -126547,26 +147302,33 @@ static int fts3DoclistOrMerge( ** ** The right-hand input doclist is overwritten by this function. */ -static void fts3DoclistPhraseMerge( +static int fts3DoclistPhraseMerge( int bDescDoclist, /* True if arguments are desc */ int nDist, /* Distance from left to right (1=adjacent) */ char *aLeft, int nLeft, /* Left doclist */ - char *aRight, int *pnRight /* IN/OUT: Right/output doclist */ + char **paRight, int *pnRight /* IN/OUT: Right/output doclist */ ){ sqlite3_int64 i1 = 0; sqlite3_int64 i2 = 0; sqlite3_int64 iPrev = 0; + char *aRight = *paRight; char *pEnd1 = &aLeft[nLeft]; char *pEnd2 = &aRight[*pnRight]; char *p1 = aLeft; char *p2 = aRight; char *p; int bFirstOut = 0; - char *aOut = aRight; + char *aOut; assert( nDist>0 ); - + if( bDescDoclist ){ + aOut = sqlite3_malloc(*pnRight + FTS3_VARINT_MAX); + if( aOut==0 ) return SQLITE_NOMEM; + }else{ + aOut = aRight; + } p = aOut; + fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); @@ -126595,6 +147357,12 @@ static void fts3DoclistPhraseMerge( } *pnRight = (int)(p - aOut); + if( bDescDoclist ){ + sqlite3_free(aRight); + *paRight = aOut; + } + + return SQLITE_OK; } /* @@ -126719,8 +147487,22 @@ static int fts3TermSelectMerge( ){ if( pTS->aaOutput[0]==0 ){ /* If this is the first term selected, copy the doclist to the output - ** buffer using memcpy(). */ - pTS->aaOutput[0] = sqlite3_malloc(nDoclist); + ** buffer using memcpy(). + ** + ** Add FTS3_VARINT_MAX bytes of unused space to the end of the + ** allocation. This is so as to ensure that the buffer is big enough + ** to hold the current doclist AND'd with any other doclist. If the + ** doclists are stored in order=ASC order, this padding would not be + ** required (since the size of [doclistA AND doclistB] is always less + ** than or equal to the size of [doclistA] in that case). But this is + ** not true for order=DESC. For example, a doclist containing (1, -1) + ** may be smaller than (-1), as in the first example the -1 may be stored + ** as a single-byte delta, whereas in the second it must be stored as a + ** FTS3_VARINT_MAX byte varint. + ** + ** Similar padding is added in the fts3DoclistOrMerge() function. + */ + pTS->aaOutput[0] = sqlite3_malloc(nDoclist + FTS3_VARINT_MAX + 1); pTS->anOutput[0] = nDoclist; if( pTS->aaOutput[0] ){ memcpy(pTS->aaOutput[0], aDoclist, nDoclist); @@ -126817,7 +147599,7 @@ static int fts3SegReaderCursor( ** calls out here. */ if( iLevel<0 && p->aIndex ){ Fts3SegReader *pSeg = 0; - rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix, &pSeg); + rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix||isScan, &pSeg); if( rc==SQLITE_OK && pSeg ){ rc = fts3SegReaderCursorAppend(pCsr, pSeg); } @@ -127142,7 +147924,7 @@ static int fts3FilterMethod( int nVal, /* Number of elements in apVal */ sqlite3_value **apVal /* Arguments for the indexing scheme */ ){ - int rc; + int rc = SQLITE_OK; char *zSql; /* SQL statement used to access %_content */ int eSearch; Fts3Table *p = (Fts3Table *)pCursor->pVtab; @@ -127170,8 +147952,9 @@ static int fts3FilterMethod( assert( iIdx==nVal ); /* In case the cursor has been used before, clear it now. */ - sqlite3_finalize(pCsr->pStmt); + fts3CursorFinalizeStmt(pCsr); sqlite3_free(pCsr->aDoclist); + sqlite3Fts3MIBufferFree(pCsr->pMIBuffer); sqlite3Fts3ExprFree(pCsr->pExpr); memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor)); @@ -127219,10 +148002,17 @@ static int fts3FilterMethod( ** row by docid. */ if( eSearch==FTS3_FULLSCAN_SEARCH ){ - zSql = sqlite3_mprintf( - "SELECT %s ORDER BY rowid %s", - p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC") - ); + if( pDocidGe || pDocidLe ){ + zSql = sqlite3_mprintf( + "SELECT %s WHERE rowid BETWEEN %lld AND %lld ORDER BY rowid %s", + p->zReadExprlist, pCsr->iMinDocid, pCsr->iMaxDocid, + (pCsr->bDesc ? "DESC" : "ASC") + ); + }else{ + zSql = sqlite3_mprintf("SELECT %s ORDER BY rowid %s", + p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC") + ); + } if( zSql ){ rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0); sqlite3_free(zSql); @@ -127230,7 +148020,7 @@ static int fts3FilterMethod( rc = SQLITE_NOMEM; } }else if( eSearch==FTS3_DOCID_SEARCH ){ - rc = fts3CursorSeekStmt(pCsr, &pCsr->pStmt); + rc = fts3CursorSeekStmt(pCsr); if( rc==SQLITE_OK ){ rc = sqlite3_bind_value(pCsr->pStmt, 1, pCons); } @@ -127360,7 +148150,10 @@ static int fts3SyncMethod(sqlite3_vtab *pVtab){ Fts3Table *p = (Fts3Table*)pVtab; int rc = sqlite3Fts3PendingTermsFlush(p); - if( rc==SQLITE_OK && p->bAutoincrmerge==1 && p->nLeafAdd>(nMinMerge/16) ){ + if( rc==SQLITE_OK + && p->nLeafAdd>(nMinMerge/16) + && p->nAutoincrmerge && p->nAutoincrmerge!=0xff + ){ int mxLevel = 0; /* Maximum relative level value in db */ int A; /* Incr-merge parameter A */ @@ -127368,14 +148161,41 @@ static int fts3SyncMethod(sqlite3_vtab *pVtab){ assert( rc==SQLITE_OK || mxLevel==0 ); A = p->nLeafAdd * mxLevel; A += (A/2); - if( A>(int)nMinMerge ) rc = sqlite3Fts3Incrmerge(p, A, 8); + if( A>(int)nMinMerge ) rc = sqlite3Fts3Incrmerge(p, A, p->nAutoincrmerge); } sqlite3Fts3SegmentsClose(p); return rc; } /* -** Implementation of xBegin() method. This is a no-op. +** If it is currently unknown whether or not the FTS table has an %_stat +** table (if p->bHasStat==2), attempt to determine this (set p->bHasStat +** to 0 or 1). Return SQLITE_OK if successful, or an SQLite error code +** if an error occurs. +*/ +static int fts3SetHasStat(Fts3Table *p){ + int rc = SQLITE_OK; + if( p->bHasStat==2 ){ + const char *zFmt ="SELECT 1 FROM %Q.sqlite_master WHERE tbl_name='%q_stat'"; + char *zSql = sqlite3_mprintf(zFmt, p->zDb, p->zName); + if( zSql ){ + sqlite3_stmt *pStmt = 0; + rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); + if( rc==SQLITE_OK ){ + int bHasStat = (sqlite3_step(pStmt)==SQLITE_ROW); + rc = sqlite3_finalize(pStmt); + if( rc==SQLITE_OK ) p->bHasStat = (u8)bHasStat; + } + sqlite3_free(zSql); + }else{ + rc = SQLITE_NOMEM; + } + } + return rc; +} + +/* +** Implementation of xBegin() method. */ static int fts3BeginMethod(sqlite3_vtab *pVtab){ Fts3Table *p = (Fts3Table*)pVtab; @@ -127386,7 +148206,7 @@ static int fts3BeginMethod(sqlite3_vtab *pVtab){ TESTONLY( p->inTransaction = 1 ); TESTONLY( p->mxSavepoint = -1; ); p->nLeafAdd = 0; - return SQLITE_OK; + return fts3SetHasStat(p); } /* @@ -127428,11 +148248,31 @@ static void fts3ReversePoslist(char *pStart, char **ppPoslist){ char *p = &(*ppPoslist)[-2]; char c = 0; + /* Skip backwards passed any trailing 0x00 bytes added by NearTrim() */ while( p>pStart && (c=*p--)==0 ); + + /* Search backwards for a varint with value zero (the end of the previous + ** poslist). This is an 0x00 byte preceded by some byte that does not + ** have the 0x80 bit set. */ while( p>pStart && (*p & 0x80) | c ){ c = *p--; } - if( p>pStart ){ p = &p[2]; } + assert( p==pStart || c==0 ); + + /* At this point p points to that preceding byte without the 0x80 bit + ** set. So to find the start of the poslist, skip forward 2 bytes then + ** over a varint. + ** + ** Normally. The other case is that p==pStart and the poslist to return + ** is the first in the doclist. In this case do not skip forward 2 bytes. + ** The second part of the if condition (c==0 && *ppPoslist>&p[2]) + ** is required for cases where the first byte of a doclist and the + ** doclist is empty. For example, if the first docid is 10, a doclist + ** that begins with: + ** + ** 0x0A 0x00 + */ + if( p>pStart || (c==0 && *ppPoslist>&p[2]) ){ p = &p[2]; } while( *p++&0x80 ); *ppPoslist = p; } @@ -127503,6 +148343,8 @@ static void fts3SnippetFunc( } if( !zEllipsis || !zEnd || !zStart ){ sqlite3_result_error_nomem(pContext); + }else if( nToken==0 ){ + sqlite3_result_text(pContext, "", -1, SQLITE_STATIC); }else if( SQLITE_OK==fts3CursorSeek(pContext, pCsr) ){ sqlite3Fts3Snippet(pContext, pCsr, zStart, zEnd, zEllipsis, iCol, nToken); } @@ -127635,6 +148477,10 @@ static int fts3RenameMethod( sqlite3 *db = p->db; /* Database connection */ int rc; /* Return Code */ + /* At this point it must be known if the %_stat table exists or not. + ** So bHasStat may not be 2. */ + rc = fts3SetHasStat(p); + /* As it happens, the pending terms table is always empty here. This is ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction ** always opens a savepoint transaction. And the xSavepoint() method @@ -127642,7 +148488,9 @@ static int fts3RenameMethod( ** PendingTermsFlush() in in case that changes. */ assert( p->nPendingData==0 ); - rc = sqlite3Fts3PendingTermsFlush(p); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts3PendingTermsFlush(p); + } if( p->zContentTbl==0 ){ fts3DbExec(&rc, db, @@ -127770,7 +148618,7 @@ static void hashDestroy(void *p){ */ SQLITE_PRIVATE void sqlite3Fts3SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); SQLITE_PRIVATE void sqlite3Fts3PorterTokenizerModule(sqlite3_tokenizer_module const**ppModule); -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE SQLITE_PRIVATE void sqlite3Fts3UnicodeTokenizer(sqlite3_tokenizer_module const**ppModule); #endif #ifdef SQLITE_ENABLE_ICU @@ -127788,7 +148636,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ Fts3Hash *pHash = 0; const sqlite3_tokenizer_module *pSimple = 0; const sqlite3_tokenizer_module *pPorter = 0; -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE const sqlite3_tokenizer_module *pUnicode = 0; #endif @@ -127797,7 +148645,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ sqlite3Fts3IcuTokenizerModule(&pIcu); #endif -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE sqlite3Fts3UnicodeTokenizer(&pUnicode); #endif @@ -127825,7 +148673,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db){ if( sqlite3Fts3HashInsert(pHash, "simple", 7, (void *)pSimple) || sqlite3Fts3HashInsert(pHash, "porter", 7, (void *)pPorter) -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE || sqlite3Fts3HashInsert(pHash, "unicode61", 10, (void *)pUnicode) #endif #ifdef SQLITE_ENABLE_ICU @@ -127932,14 +148780,17 @@ static void fts3EvalAllocateReaders( ** This function assumes that pList points to a buffer allocated using ** sqlite3_malloc(). This function takes responsibility for eventually ** freeing the buffer. +** +** SQLITE_OK is returned if successful, or SQLITE_NOMEM if an error occurs. */ -static void fts3EvalPhraseMergeToken( +static int fts3EvalPhraseMergeToken( Fts3Table *pTab, /* FTS Table pointer */ Fts3Phrase *p, /* Phrase to merge pList/nList into */ int iToken, /* Token pList/nList corresponds to */ char *pList, /* Pointer to doclist */ int nList /* Number of bytes in pList */ ){ + int rc = SQLITE_OK; assert( iToken!=p->iDoclistToken ); if( pList==0 ){ @@ -127978,13 +148829,16 @@ static void fts3EvalPhraseMergeToken( nDiff = p->iDoclistToken - iToken; } - fts3DoclistPhraseMerge(pTab->bDescIdx, nDiff, pLeft, nLeft, pRight,&nRight); + rc = fts3DoclistPhraseMerge( + pTab->bDescIdx, nDiff, pLeft, nLeft, &pRight, &nRight + ); sqlite3_free(pLeft); p->doclist.aAll = pRight; p->doclist.nAll = nRight; } if( iToken>p->iDoclistToken ) p->iDoclistToken = iToken; + return rc; } /* @@ -128010,7 +148864,7 @@ static int fts3EvalPhraseLoad( char *pThis = 0; rc = fts3TermSelect(pTab, pToken, p->iColumn, &nThis, &pThis); if( rc==SQLITE_OK ){ - fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis); + rc = fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis); } } assert( pToken->pSegcsr==0 ); @@ -128155,7 +149009,6 @@ static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){ int bIncrOk = (bOptOk && pCsr->bDesc==pTab->bDescIdx && p->nToken<=MAX_INCR_PHRASE_TOKENS && p->nToken>0 - && p->nToken<=MAX_INCR_PHRASE_TOKENS && p->nToken>0 #ifdef SQLITE_TEST && pTab->bNoIncrDoclist==0 #endif @@ -128275,6 +149128,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistNext( p += sqlite3Fts3GetVarint(p, piDocid); }else{ fts3PoslistCopy(0, &p); + while( p<&aDoclist[nDoclist] && *p==0 ) p++; if( p>=&aDoclist[nDoclist] ){ *pbEof = 1; }else{ @@ -128446,7 +149300,7 @@ static int fts3EvalIncrPhraseNext( bMaxSet = 1; } } - assert( rc!=SQLITE_OK || a[p->nToken-1].bIgnore==0 ); + assert( rc!=SQLITE_OK || (p->nToken>=1 && a[p->nToken-1].bIgnore==0) ); assert( rc!=SQLITE_OK || bMaxSet ); /* Keep advancing iterators until they all point to the same document */ @@ -128552,12 +149406,14 @@ static void fts3EvalStartReaders( ){ if( pExpr && SQLITE_OK==*pRc ){ if( pExpr->eType==FTSQUERY_PHRASE ){ - int i; int nToken = pExpr->pPhrase->nToken; - for(i=0; ipPhrase->aToken[i].pDeferred==0 ) break; + if( nToken ){ + int i; + for(i=0; ipPhrase->aToken[i].pDeferred==0 ) break; + } + pExpr->bDeferred = (i==nToken); } - pExpr->bDeferred = (i==nToken); *pRc = fts3EvalPhraseStart(pCsr, 1, pExpr->pPhrase); }else{ fts3EvalStartReaders(pCsr, pExpr->pLeft, pRc); @@ -128812,9 +149668,13 @@ static int fts3EvalSelectDeferred( char *pList = 0; rc = fts3TermSelect(pTab, pToken, pTC->iCol, &nList, &pList); assert( rc==SQLITE_OK || pList==0 ); + if( rc==SQLITE_OK ){ + rc = fts3EvalPhraseMergeToken( + pTab, pTC->pPhrase, pTC->iToken,pList,nList + ); + } if( rc==SQLITE_OK ){ int nCount; - fts3EvalPhraseMergeToken(pTab, pTC->pPhrase, pTC->iToken,pList,nList); nCount = fts3DoclistCountDocids( pTC->pPhrase->doclist.aAll, pTC->pPhrase->doclist.nAll ); @@ -128992,7 +149852,7 @@ static int fts3EvalNearTrim( ** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is ** advanced to point to the next row that matches "x AND y". ** -** See fts3EvalTestDeferredAndNear() for details on testing if a row is +** See sqlite3Fts3EvalTestDeferred() for details on testing if a row is ** really a match, taking into account deferred tokens and NEAR operators. */ static void fts3EvalNextRow( @@ -129039,6 +149899,22 @@ static void fts3EvalNextRow( } pExpr->iDocid = pLeft->iDocid; pExpr->bEof = (pLeft->bEof || pRight->bEof); + if( pExpr->eType==FTSQUERY_NEAR && pExpr->bEof ){ + if( pRight->pPhrase && pRight->pPhrase->doclist.aAll ){ + Fts3Doclist *pDl = &pRight->pPhrase->doclist; + while( *pRc==SQLITE_OK && pRight->bEof==0 ){ + memset(pDl->pList, 0, pDl->nList); + fts3EvalNextRow(pCsr, pRight, pRc); + } + } + if( pLeft->pPhrase && pLeft->pPhrase->doclist.aAll ){ + Fts3Doclist *pDl = &pLeft->pPhrase->doclist; + while( *pRc==SQLITE_OK && pLeft->bEof==0 ){ + memset(pDl->pList, 0, pDl->nList); + fts3EvalNextRow(pCsr, pLeft, pRc); + } + } + } } break; } @@ -129196,7 +150072,7 @@ static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){ } /* -** This function is a helper function for fts3EvalTestDeferredAndNear(). +** This function is a helper function for sqlite3Fts3EvalTestDeferred(). ** Assuming no error occurs or has occurred, It returns non-zero if the ** expression passed as the second argument matches the row that pCsr ** currently points to, or zero if it does not. @@ -129317,7 +150193,7 @@ static int fts3EvalTestExpr( ** Or, if no error occurs and it seems the current row does match the FTS ** query, return 0. */ -static int fts3EvalTestDeferredAndNear(Fts3Cursor *pCsr, int *pRc){ +SQLITE_PRIVATE int sqlite3Fts3EvalTestDeferred(Fts3Cursor *pCsr, int *pRc){ int rc = *pRc; int bMiss = 0; if( rc==SQLITE_OK ){ @@ -129364,7 +150240,7 @@ static int fts3EvalNext(Fts3Cursor *pCsr){ pCsr->isRequireSeek = 1; pCsr->isMatchinfoNeeded = 1; pCsr->iPrevId = pExpr->iDocid; - }while( pCsr->isEof==0 && fts3EvalTestDeferredAndNear(pCsr, &rc) ); + }while( pCsr->isEof==0 && sqlite3Fts3EvalTestDeferred(pCsr, &rc) ); } /* Check if the cursor is past the end of the docid range specified @@ -129411,6 +150287,7 @@ static void fts3EvalRestart( } pPhrase->doclist.pNextDocid = 0; pPhrase->doclist.iDocid = 0; + pPhrase->pOrPoslist = 0; } pExpr->iDocid = 0; @@ -129524,7 +150401,7 @@ static int fts3EvalGatherStats( pCsr->iPrevId = pRoot->iDocid; }while( pCsr->isEof==0 && pRoot->eType==FTSQUERY_NEAR - && fts3EvalTestDeferredAndNear(pCsr, &rc) + && sqlite3Fts3EvalTestDeferred(pCsr, &rc) ); if( rc==SQLITE_OK && pCsr->isEof==0 ){ @@ -129549,7 +150426,6 @@ static int fts3EvalGatherStats( fts3EvalNextRow(pCsr, pRoot, &rc); assert( pRoot->bEof==0 ); }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK ); - fts3EvalTestDeferredAndNear(pCsr, &rc); } } return rc; @@ -129656,13 +150532,13 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( iDocid = pExpr->iDocid; pIter = pPhrase->doclist.pList; if( iDocid!=pCsr->iPrevId || pExpr->bEof ){ + int rc = SQLITE_OK; int bDescDoclist = pTab->bDescIdx; /* For DOCID_CMP macro */ - int iMul; /* +1 if csr dir matches index dir, else -1 */ int bOr = 0; - u8 bEof = 0; u8 bTreeEof = 0; Fts3Expr *p; /* Used to iterate from pExpr to root */ Fts3Expr *pNear; /* Most senior NEAR ancestor (or pExpr) */ + int bMatch; /* Check if this phrase descends from an OR expression node. If not, ** return NULL. Otherwise, the entry that corresponds to docid @@ -129681,74 +150557,62 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( ** an incremental phrase. Load the entire doclist for the phrase ** into memory in this case. */ if( pPhrase->bIncr ){ - int rc = SQLITE_OK; - int bEofSave = pExpr->bEof; - fts3EvalRestart(pCsr, pExpr, &rc); - while( rc==SQLITE_OK && !pExpr->bEof ){ - fts3EvalNextRow(pCsr, pExpr, &rc); - if( bEofSave==0 && pExpr->iDocid==iDocid ) break; + int bEofSave = pNear->bEof; + fts3EvalRestart(pCsr, pNear, &rc); + while( rc==SQLITE_OK && !pNear->bEof ){ + fts3EvalNextRow(pCsr, pNear, &rc); + if( bEofSave==0 && pNear->iDocid==iDocid ) break; } - pIter = pPhrase->doclist.pList; assert( rc!=SQLITE_OK || pPhrase->bIncr==0 ); - if( rc!=SQLITE_OK ) return rc; } - - iMul = ((pCsr->bDesc==bDescDoclist) ? 1 : -1); - while( bTreeEof==1 - && pNear->bEof==0 - && (DOCID_CMP(pNear->iDocid, pCsr->iPrevId) * iMul)<0 - ){ - int rc = SQLITE_OK; - fts3EvalNextRow(pCsr, pExpr, &rc); - if( rc!=SQLITE_OK ) return rc; - iDocid = pExpr->iDocid; - pIter = pPhrase->doclist.pList; + if( bTreeEof ){ + while( rc==SQLITE_OK && !pNear->bEof ){ + fts3EvalNextRow(pCsr, pNear, &rc); + } } + if( rc!=SQLITE_OK ) return rc; - bEof = (pPhrase->doclist.nAll==0); - assert( bDescDoclist==0 || bDescDoclist==1 ); - assert( pCsr->bDesc==0 || pCsr->bDesc==1 ); + bMatch = 1; + for(p=pNear; p; p=p->pLeft){ + u8 bEof = 0; + Fts3Expr *pTest = p; + Fts3Phrase *pPh; + assert( pTest->eType==FTSQUERY_NEAR || pTest->eType==FTSQUERY_PHRASE ); + if( pTest->eType==FTSQUERY_NEAR ) pTest = pTest->pRight; + assert( pTest->eType==FTSQUERY_PHRASE ); + pPh = pTest->pPhrase; - if( bEof==0 ){ + pIter = pPh->pOrPoslist; + iDocid = pPh->iOrDocid; if( pCsr->bDesc==bDescDoclist ){ - int dummy; - if( pNear->bEof ){ - /* This expression is already at EOF. So position it to point to the - ** last entry in the doclist at pPhrase->doclist.aAll[]. Variable - ** iDocid is already set for this entry, so all that is required is - ** to set pIter to point to the first byte of the last position-list - ** in the doclist. - ** - ** It would also be correct to set pIter and iDocid to zero. In - ** this case, the first call to sqltie3Fts4DoclistPrev() below - ** would also move the iterator to point to the last entry in the - ** doclist. However, this is expensive, as to do so it has to - ** iterate through the entire doclist from start to finish (since - ** it does not know the docid for the last entry). */ - pIter = &pPhrase->doclist.aAll[pPhrase->doclist.nAll-1]; - fts3ReversePoslist(pPhrase->doclist.aAll, &pIter); - } - while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)>0 ) && bEof==0 ){ - sqlite3Fts3DoclistPrev( - bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll, - &pIter, &iDocid, &dummy, &bEof - ); - } - }else{ - if( pNear->bEof ){ - pIter = 0; - iDocid = 0; - } + bEof = !pPh->doclist.nAll || + (pIter >= (pPh->doclist.aAll + pPh->doclist.nAll)); while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)<0 ) && bEof==0 ){ sqlite3Fts3DoclistNext( - bDescDoclist, pPhrase->doclist.aAll, pPhrase->doclist.nAll, + bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, &pIter, &iDocid, &bEof ); } + }else{ + bEof = !pPh->doclist.nAll || (pIter && pIter<=pPh->doclist.aAll); + while( (pIter==0 || DOCID_CMP(iDocid, pCsr->iPrevId)>0 ) && bEof==0 ){ + int dummy; + sqlite3Fts3DoclistPrev( + bDescDoclist, pPh->doclist.aAll, pPh->doclist.nAll, + &pIter, &iDocid, &dummy, &bEof + ); + } } + pPh->pOrPoslist = pIter; + pPh->iOrDocid = iDocid; + if( bEof || iDocid!=pCsr->iPrevId ) bMatch = 0; } - if( bEof || iDocid!=pCsr->iPrevId ) pIter = 0; + if( bMatch ){ + pIter = pPhrase->pOrPoslist; + }else{ + pIter = 0; + } } if( pIter==0 ) return SQLITE_OK; @@ -129760,10 +150624,13 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhrasePoslist( } while( iThis */ @@ -129937,7 +150805,7 @@ static int fts3auxConnectMethod( return SQLITE_OK; bad_args: - *pzErr = sqlite3_mprintf("invalid arguments to fts4aux constructor"); + sqlite3Fts3ErrMsg(pzErr, "invalid arguments to fts4aux constructor"); return SQLITE_ERROR; } @@ -130389,6 +151257,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitAux(sqlite3 *db){ ** syntax is relatively simple, the whole tokenizer/parser system is ** hand-coded. */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* @@ -130558,40 +151427,23 @@ static int getNextToken( int rc; sqlite3_tokenizer_cursor *pCursor; Fts3Expr *pRet = 0; - int nConsumed = 0; + int i = 0; - rc = sqlite3Fts3OpenTokenizer(pTokenizer, pParse->iLangid, z, n, &pCursor); + /* Set variable i to the maximum number of bytes of input to tokenize. */ + for(i=0; iiLangid, z, i, &pCursor); if( rc==SQLITE_OK ){ const char *zToken; int nToken = 0, iStart = 0, iEnd = 0, iPosition = 0; int nByte; /* total space to allocate */ rc = pModule->xNext(pCursor, &zToken, &nToken, &iStart, &iEnd, &iPosition); - - if( (rc==SQLITE_OK || rc==SQLITE_DONE) && sqlite3_fts3_enable_parentheses ){ - int i; - if( rc==SQLITE_DONE ) iStart = n; - for(i=0; inNest++; - rc = fts3ExprParse(pParse, &z[i+1], n-i-1, &pRet, &nConsumed); - if( rc==SQLITE_OK && !pRet ){ - rc = SQLITE_DONE; - } - nConsumed = (int)(i + 1 + nConsumed); - break; - } - - if( z[i]==')' ){ - rc = SQLITE_DONE; - pParse->nNest--; - nConsumed = i+1; - break; - } - } - } - - if( nConsumed==0 && rc==SQLITE_OK ){ + if( rc==SQLITE_OK ){ nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase) + nToken; pRet = (Fts3Expr *)fts3MallocZero(nByte); if( !pRet ){ @@ -130625,13 +151477,14 @@ static int getNextToken( } } - nConsumed = iEnd; + *pnConsumed = iEnd; + }else if( i && rc==SQLITE_DONE ){ + rc = SQLITE_OK; } pModule->xClose(pCursor); } - *pnConsumed = nConsumed; *ppExpr = pRet; return rc; } @@ -130881,6 +151734,21 @@ static int getNextNode( return getNextString(pParse, &zInput[1], ii-1, ppExpr); } + if( sqlite3_fts3_enable_parentheses ){ + if( *zInput=='(' ){ + int nConsumed = 0; + pParse->nNest++; + rc = fts3ExprParse(pParse, zInput+1, nInput-1, ppExpr, &nConsumed); + if( rc==SQLITE_OK && !*ppExpr ){ rc = SQLITE_DONE; } + *pnConsumed = (int)(zInput - z) + 1 + nConsumed; + return rc; + }else if( *zInput==')' ){ + pParse->nNest--; + *pnConsumed = (int)((zInput - z) + 1); + *ppExpr = 0; + return SQLITE_DONE; + } + } /* If control flows to this point, this must be a regular token, or ** the end of the input. Read a regular token using the sqlite3_tokenizer @@ -130999,96 +151867,100 @@ static int fts3ExprParse( while( rc==SQLITE_OK ){ Fts3Expr *p = 0; int nByte = 0; + rc = getNextNode(pParse, zIn, nIn, &p, &nByte); + assert( nByte>0 || (rc!=SQLITE_OK && p==0) ); if( rc==SQLITE_OK ){ - int isPhrase; + if( p ){ + int isPhrase; - if( !sqlite3_fts3_enable_parentheses - && p->eType==FTSQUERY_PHRASE && pParse->isNot - ){ - /* Create an implicit NOT operator. */ - Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr)); - if( !pNot ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_NOMEM; - goto exprparse_out; - } - pNot->eType = FTSQUERY_NOT; - pNot->pRight = p; - p->pParent = pNot; - if( pNotBranch ){ - pNot->pLeft = pNotBranch; - pNotBranch->pParent = pNot; - } - pNotBranch = pNot; - p = pPrev; - }else{ - int eType = p->eType; - isPhrase = (eType==FTSQUERY_PHRASE || p->pLeft); - - /* The isRequirePhrase variable is set to true if a phrase or - ** an expression contained in parenthesis is required. If a - ** binary operator (AND, OR, NOT or NEAR) is encounted when - ** isRequirePhrase is set, this is a syntax error. - */ - if( !isPhrase && isRequirePhrase ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_ERROR; - goto exprparse_out; - } - - if( isPhrase && !isRequirePhrase ){ - /* Insert an implicit AND operator. */ - Fts3Expr *pAnd; - assert( pRet && pPrev ); - pAnd = fts3MallocZero(sizeof(Fts3Expr)); - if( !pAnd ){ + if( !sqlite3_fts3_enable_parentheses + && p->eType==FTSQUERY_PHRASE && pParse->isNot + ){ + /* Create an implicit NOT operator. */ + Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr)); + if( !pNot ){ sqlite3Fts3ExprFree(p); rc = SQLITE_NOMEM; goto exprparse_out; } - pAnd->eType = FTSQUERY_AND; - insertBinaryOperator(&pRet, pPrev, pAnd); - pPrev = pAnd; - } + pNot->eType = FTSQUERY_NOT; + pNot->pRight = p; + p->pParent = pNot; + if( pNotBranch ){ + pNot->pLeft = pNotBranch; + pNotBranch->pParent = pNot; + } + pNotBranch = pNot; + p = pPrev; + }else{ + int eType = p->eType; + isPhrase = (eType==FTSQUERY_PHRASE || p->pLeft); - /* This test catches attempts to make either operand of a NEAR - ** operator something other than a phrase. For example, either of - ** the following: - ** - ** (bracketed expression) NEAR phrase - ** phrase NEAR (bracketed expression) - ** - ** Return an error in either case. - */ - if( pPrev && ( + /* The isRequirePhrase variable is set to true if a phrase or + ** an expression contained in parenthesis is required. If a + ** binary operator (AND, OR, NOT or NEAR) is encounted when + ** isRequirePhrase is set, this is a syntax error. + */ + if( !isPhrase && isRequirePhrase ){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_ERROR; + goto exprparse_out; + } + + if( isPhrase && !isRequirePhrase ){ + /* Insert an implicit AND operator. */ + Fts3Expr *pAnd; + assert( pRet && pPrev ); + pAnd = fts3MallocZero(sizeof(Fts3Expr)); + if( !pAnd ){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_NOMEM; + goto exprparse_out; + } + pAnd->eType = FTSQUERY_AND; + insertBinaryOperator(&pRet, pPrev, pAnd); + pPrev = pAnd; + } + + /* This test catches attempts to make either operand of a NEAR + ** operator something other than a phrase. For example, either of + ** the following: + ** + ** (bracketed expression) NEAR phrase + ** phrase NEAR (bracketed expression) + ** + ** Return an error in either case. + */ + if( pPrev && ( (eType==FTSQUERY_NEAR && !isPhrase && pPrev->eType!=FTSQUERY_PHRASE) || (eType!=FTSQUERY_PHRASE && isPhrase && pPrev->eType==FTSQUERY_NEAR) - )){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_ERROR; - goto exprparse_out; - } - - if( isPhrase ){ - if( pRet ){ - assert( pPrev && pPrev->pLeft && pPrev->pRight==0 ); - pPrev->pRight = p; - p->pParent = pPrev; - }else{ - pRet = p; + )){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_ERROR; + goto exprparse_out; } - }else{ - insertBinaryOperator(&pRet, pPrev, p); + + if( isPhrase ){ + if( pRet ){ + assert( pPrev && pPrev->pLeft && pPrev->pRight==0 ); + pPrev->pRight = p; + p->pParent = pPrev; + }else{ + pRet = p; + } + }else{ + insertBinaryOperator(&pRet, pPrev, p); + } + isRequirePhrase = !isPhrase; } - isRequirePhrase = !isPhrase; + pPrev = p; } assert( nByte>0 ); } assert( rc!=SQLITE_OK || (nByte>0 && nByte<=nIn) ); nIn -= nByte; zIn += nByte; - pPrev = p; } if( rc==SQLITE_DONE && pRet && isRequirePhrase ){ @@ -131163,125 +152035,151 @@ static int fts3ExprBalance(Fts3Expr **pp, int nMaxDepth){ rc = SQLITE_ERROR; } - if( rc==SQLITE_OK && (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ - Fts3Expr **apLeaf; - apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); - if( 0==apLeaf ){ - rc = SQLITE_NOMEM; - }else{ - memset(apLeaf, 0, sizeof(Fts3Expr *) * nMaxDepth); - } - - if( rc==SQLITE_OK ){ - int i; - Fts3Expr *p; - - /* Set $p to point to the left-most leaf in the tree of eType nodes. */ - for(p=pRoot; p->eType==eType; p=p->pLeft){ - assert( p->pParent==0 || p->pParent->pLeft==p ); - assert( p->pLeft && p->pRight ); - } - - /* This loop runs once for each leaf in the tree of eType nodes. */ - while( 1 ){ - int iLvl; - Fts3Expr *pParent = p->pParent; /* Current parent of p */ - - assert( pParent==0 || pParent->pLeft==p ); - p->pParent = 0; - if( pParent ){ - pParent->pLeft = 0; - }else{ - pRoot = 0; - } - rc = fts3ExprBalance(&p, nMaxDepth-1); - if( rc!=SQLITE_OK ) break; - - for(iLvl=0; p && iLvlpLeft = apLeaf[iLvl]; - pFree->pRight = p; - pFree->pLeft->pParent = pFree; - pFree->pRight->pParent = pFree; - - p = pFree; - pFree = pFree->pParent; - p->pParent = 0; - apLeaf[iLvl] = 0; - } - } - if( p ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_TOOBIG; - break; - } - - /* If that was the last leaf node, break out of the loop */ - if( pParent==0 ) break; - - /* Set $p to point to the next leaf in the tree of eType nodes */ - for(p=pParent->pRight; p->eType==eType; p=p->pLeft); - - /* Remove pParent from the original tree. */ - assert( pParent->pParent==0 || pParent->pParent->pLeft==pParent ); - pParent->pRight->pParent = pParent->pParent; - if( pParent->pParent ){ - pParent->pParent->pLeft = pParent->pRight; - }else{ - assert( pParent==pRoot ); - pRoot = pParent->pRight; - } - - /* Link pParent into the free node list. It will be used as an - ** internal node of the new tree. */ - pParent->pParent = pFree; - pFree = pParent; + if( rc==SQLITE_OK ){ + if( (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ + Fts3Expr **apLeaf; + apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); + if( 0==apLeaf ){ + rc = SQLITE_NOMEM; + }else{ + memset(apLeaf, 0, sizeof(Fts3Expr *) * nMaxDepth); } if( rc==SQLITE_OK ){ - p = 0; - for(i=0; ipParent = 0; + int i; + Fts3Expr *p; + + /* Set $p to point to the left-most leaf in the tree of eType nodes. */ + for(p=pRoot; p->eType==eType; p=p->pLeft){ + assert( p->pParent==0 || p->pParent->pLeft==p ); + assert( p->pLeft && p->pRight ); + } + + /* This loop runs once for each leaf in the tree of eType nodes. */ + while( 1 ){ + int iLvl; + Fts3Expr *pParent = p->pParent; /* Current parent of p */ + + assert( pParent==0 || pParent->pLeft==p ); + p->pParent = 0; + if( pParent ){ + pParent->pLeft = 0; + }else{ + pRoot = 0; + } + rc = fts3ExprBalance(&p, nMaxDepth-1); + if( rc!=SQLITE_OK ) break; + + for(iLvl=0; p && iLvlpLeft = apLeaf[iLvl]; pFree->pRight = p; - pFree->pLeft = apLeaf[i]; pFree->pLeft->pParent = pFree; pFree->pRight->pParent = pFree; p = pFree; pFree = pFree->pParent; p->pParent = 0; + apLeaf[iLvl] = 0; } } + if( p ){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_TOOBIG; + break; + } + + /* If that was the last leaf node, break out of the loop */ + if( pParent==0 ) break; + + /* Set $p to point to the next leaf in the tree of eType nodes */ + for(p=pParent->pRight; p->eType==eType; p=p->pLeft); + + /* Remove pParent from the original tree. */ + assert( pParent->pParent==0 || pParent->pParent->pLeft==pParent ); + pParent->pRight->pParent = pParent->pParent; + if( pParent->pParent ){ + pParent->pParent->pLeft = pParent->pRight; + }else{ + assert( pParent==pRoot ); + pRoot = pParent->pRight; + } + + /* Link pParent into the free node list. It will be used as an + ** internal node of the new tree. */ + pParent->pParent = pFree; + pFree = pParent; } - pRoot = p; - }else{ - /* An error occurred. Delete the contents of the apLeaf[] array - ** and pFree list. Everything else is cleaned up by the call to - ** sqlite3Fts3ExprFree(pRoot) below. */ - Fts3Expr *pDel; - for(i=0; ipParent; - sqlite3_free(pDel); + + if( rc==SQLITE_OK ){ + p = 0; + for(i=0; ipParent = 0; + }else{ + assert( pFree!=0 ); + pFree->pRight = p; + pFree->pLeft = apLeaf[i]; + pFree->pLeft->pParent = pFree; + pFree->pRight->pParent = pFree; + + p = pFree; + pFree = pFree->pParent; + p->pParent = 0; + } + } + } + pRoot = p; + }else{ + /* An error occurred. Delete the contents of the apLeaf[] array + ** and pFree list. Everything else is cleaned up by the call to + ** sqlite3Fts3ExprFree(pRoot) below. */ + Fts3Expr *pDel; + for(i=0; ipParent; + sqlite3_free(pDel); + } } + + assert( pFree==0 ); + sqlite3_free( apLeaf ); + } + }else if( eType==FTSQUERY_NOT ){ + Fts3Expr *pLeft = pRoot->pLeft; + Fts3Expr *pRight = pRoot->pRight; + + pRoot->pLeft = 0; + pRoot->pRight = 0; + pLeft->pParent = 0; + pRight->pParent = 0; + + rc = fts3ExprBalance(&pLeft, nMaxDepth-1); + if( rc==SQLITE_OK ){ + rc = fts3ExprBalance(&pRight, nMaxDepth-1); } - assert( pFree==0 ); - sqlite3_free( apLeaf ); + if( rc!=SQLITE_OK ){ + sqlite3Fts3ExprFree(pRight); + sqlite3Fts3ExprFree(pLeft); + }else{ + assert( pLeft && pRight ); + pRoot->pLeft = pLeft; + pLeft->pParent = pRoot; + pRoot->pRight = pRight; + pRight->pParent = pRoot; + } } } - + if( rc!=SQLITE_OK ){ sqlite3Fts3ExprFree(pRoot); pRoot = 0; @@ -131392,13 +152290,13 @@ SQLITE_PRIVATE int sqlite3Fts3ExprParse( sqlite3Fts3ExprFree(*ppExpr); *ppExpr = 0; if( rc==SQLITE_TOOBIG ){ - *pzErr = sqlite3_mprintf( + sqlite3Fts3ErrMsg(pzErr, "FTS expression tree is too large (maximum depth %d)", SQLITE_FTS3_MAX_EXPR_DEPTH ); rc = SQLITE_ERROR; }else if( rc==SQLITE_ERROR ){ - *pzErr = sqlite3_mprintf("malformed MATCH expression: [%s]", z); + sqlite3Fts3ErrMsg(pzErr, "malformed MATCH expression: [%s]", z); } } @@ -131679,12 +152577,14 @@ SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3* db){ ** * The FTS3 module is being built into the core of ** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ /* #include */ /* #include */ +/* #include "fts3_hash.h" */ /* ** Malloc and Free functions @@ -132062,6 +152962,7 @@ SQLITE_PRIVATE void *sqlite3Fts3HashInsert( ** * The FTS3 module is being built into the core of ** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -132069,6 +152970,7 @@ SQLITE_PRIVATE void *sqlite3Fts3HashInsert( /* #include */ /* #include */ +/* #include "fts3_tokenizer.h" */ /* ** Class derived from sqlite3_tokenizer @@ -132221,7 +153123,7 @@ static int isVowel(const char *z){ ** by a consonant. ** ** In this routine z[] is in reverse order. So we are really looking -** for an instance of of a consonant followed by a vowel. +** for an instance of a consonant followed by a vowel. */ static int m_gt_0(const char *z){ while( isVowel(z) ){ z++; } @@ -132726,11 +153628,24 @@ SQLITE_PRIVATE void sqlite3Fts3PorterTokenizerModule( ** * The FTS3 module is being built into the core of ** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ /* #include */ +/* +** Return true if the two-argument version of fts3_tokenizer() +** has been activated via a prior call to sqlite3_db_config(db, +** SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, 1, 0); +*/ +static int fts3TokenizerEnabled(sqlite3_context *context){ + sqlite3 *db = sqlite3_context_db_handle(context); + int isEnabled = 0; + sqlite3_db_config(db,SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER,-1,&isEnabled); + return isEnabled; +} + /* ** Implementation of the SQL scalar function for accessing the underlying ** hash table. This function may be called as follows: @@ -132751,7 +153666,7 @@ SQLITE_PRIVATE void sqlite3Fts3PorterTokenizerModule( ** is a blob containing the pointer stored as the hash data corresponding ** to string (after the hash-table is updated, if applicable). */ -static void scalarFunc( +static void fts3TokenizerFunc( sqlite3_context *context, int argc, sqlite3_value **argv @@ -132769,20 +153684,26 @@ static void scalarFunc( nName = sqlite3_value_bytes(argv[0])+1; if( argc==2 ){ - void *pOld; - int n = sqlite3_value_bytes(argv[1]); - if( n!=sizeof(pPtr) ){ - sqlite3_result_error(context, "argument type mismatch", -1); - return; - } - pPtr = *(void **)sqlite3_value_blob(argv[1]); - pOld = sqlite3Fts3HashInsert(pHash, (void *)zName, nName, pPtr); - if( pOld==pPtr ){ - sqlite3_result_error(context, "out of memory", -1); + if( fts3TokenizerEnabled(context) ){ + void *pOld; + int n = sqlite3_value_bytes(argv[1]); + if( zName==0 || n!=sizeof(pPtr) ){ + sqlite3_result_error(context, "argument type mismatch", -1); + return; + } + pPtr = *(void **)sqlite3_value_blob(argv[1]); + pOld = sqlite3Fts3HashInsert(pHash, (void *)zName, nName, pPtr); + if( pOld==pPtr ){ + sqlite3_result_error(context, "out of memory", -1); + } + }else{ + sqlite3_result_error(context, "fts3tokenize disabled", -1); return; } }else{ - pPtr = sqlite3Fts3HashFind(pHash, zName, nName); + if( zName ){ + pPtr = sqlite3Fts3HashFind(pHash, zName, nName); + } if( !pPtr ){ char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); sqlite3_result_error(context, zErr, -1); @@ -132790,7 +153711,6 @@ static void scalarFunc( return; } } - sqlite3_result_blob(context, (void *)&pPtr, sizeof(pPtr), SQLITE_TRANSIENT); } @@ -132863,12 +153783,16 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( zEnd = &zCopy[strlen(zCopy)]; z = (char *)sqlite3Fts3NextToken(zCopy, &n); + if( z==0 ){ + assert( n==0 ); + z = zCopy; + } z[n] = '\0'; sqlite3Fts3Dequote(z); m = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash,z,(int)strlen(z)+1); if( !m ){ - *pzErr = sqlite3_mprintf("unknown tokenizer: %s", z); + sqlite3Fts3ErrMsg(pzErr, "unknown tokenizer: %s", z); rc = SQLITE_ERROR; }else{ char const **aArg = 0; @@ -132891,7 +153815,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( rc = m->xCreate(iArg, aArg, ppTok); assert( rc!=SQLITE_OK || *ppTok ); if( rc!=SQLITE_OK ){ - *pzErr = sqlite3_mprintf("unknown tokenizer"); + sqlite3Fts3ErrMsg(pzErr, "unknown tokenizer"); }else{ (*ppTok)->pModule = m; } @@ -132905,7 +153829,11 @@ SQLITE_PRIVATE int sqlite3Fts3InitTokenizer( #ifdef SQLITE_TEST -#include +#if defined(INCLUDE_SQLITE_TCL_H) +# include "sqlite_tcl.h" +#else +# include "tcl.h" +#endif /* #include */ /* @@ -132975,9 +153903,9 @@ static void testFunc( p = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash, zName, nName+1); if( !p ){ - char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); + char *zErr2 = sqlite3_mprintf("unknown tokenizer: %s", zName); + sqlite3_result_error(context, zErr2, -1); + sqlite3_free(zErr2); return; } @@ -133046,6 +153974,7 @@ int registerTokenizer( return sqlite3_finalize(pStmt); } + static int queryTokenizer( sqlite3 *db, @@ -133116,11 +154045,13 @@ static void intTestFunc( assert( 0==strcmp(sqlite3_errmsg(db), "unknown tokenizer: nosuchtokenizer") ); /* Test the storage function */ - rc = registerTokenizer(db, "nosuchtokenizer", p1); - assert( rc==SQLITE_OK ); - rc = queryTokenizer(db, "nosuchtokenizer", &p2); - assert( rc==SQLITE_OK ); - assert( p2==p1 ); + if( fts3TokenizerEnabled(context) ){ + rc = registerTokenizer(db, "nosuchtokenizer", p1); + assert( rc==SQLITE_OK ); + rc = queryTokenizer(db, "nosuchtokenizer", &p2); + assert( rc==SQLITE_OK ); + assert( p2==p1 ); + } sqlite3_result_text(context, "ok", -1, SQLITE_STATIC); } @@ -133136,7 +154067,7 @@ static void intTestFunc( ** sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1); ** ** This function adds a scalar function (see header comment above -** scalarFunc() in this file for details) and, if ENABLE_TABLE is +** fts3TokenizerFunc() in this file for details) and, if ENABLE_TABLE is ** defined at compilation time, a temporary virtual table (see header ** comment above struct HashTableVtab) to the database schema. Both ** provide read/write access to the contents of *pHash. @@ -133165,10 +154096,10 @@ SQLITE_PRIVATE int sqlite3Fts3InitHashTable( #endif if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zName, 1, any, p, scalarFunc, 0, 0); + rc = sqlite3_create_function(db, zName, 1, any, p, fts3TokenizerFunc, 0, 0); } if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zName, 2, any, p, scalarFunc, 0, 0); + rc = sqlite3_create_function(db, zName, 2, any, p, fts3TokenizerFunc, 0, 0); } #ifdef SQLITE_TEST if( SQLITE_OK==rc ){ @@ -133215,6 +154146,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitHashTable( ** * The FTS3 module is being built into the core of ** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -133222,6 +154154,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitHashTable( /* #include */ /* #include */ +/* #include "fts3_tokenizer.h" */ typedef struct simple_tokenizer { sqlite3_tokenizer base; @@ -133466,6 +154399,7 @@ SQLITE_PRIVATE void sqlite3Fts3SimpleTokenizerModule( ** pos: Token offset of token within input. ** */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -133512,7 +154446,7 @@ static int fts3tokQueryTokenizer( p = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash, zName, nName+1); if( !p ){ - *pzErr = sqlite3_mprintf("unknown tokenizer: %s", zName); + sqlite3Fts3ErrMsg(pzErr, "unknown tokenizer: %s", zName); return SQLITE_ERROR; } @@ -133590,7 +154524,7 @@ static int fts3tokConnectMethod( sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ char **pzErr /* OUT: sqlite3_malloc'd error message */ ){ - Fts3tokTable *pTab; + Fts3tokTable *pTab = 0; const sqlite3_tokenizer_module *pMod = 0; sqlite3_tokenizer *pTok = 0; int rc; @@ -133901,6 +154835,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){ ** code in fts3.c. */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -134076,6 +155011,7 @@ struct SegmentWriter { int nSize; /* Size of allocation at aData */ int nData; /* Bytes of data in aData */ char *aData; /* Pointer to block from malloc() */ + i64 nLeafData; /* Number of bytes of leaf data written */ }; /* @@ -134151,6 +155087,10 @@ struct SegmentNode { #define SQL_SELECT_INDEXES 35 #define SQL_SELECT_MXLEVEL 36 +#define SQL_SELECT_LEVEL_RANGE2 37 +#define SQL_UPDATE_LEVEL_IDX 38 +#define SQL_UPDATE_LEVEL 39 + /* ** This function is used to obtain an SQLite prepared statement handle ** for the statement identified by the second argument. If successful, @@ -134204,14 +155144,15 @@ static int fts3SqlStmt( /* 25 */ "", /* 26 */ "DELETE FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?", -/* 27 */ "SELECT DISTINCT level / (1024 * ?) FROM %Q.'%q_segdir'", +/* 27 */ "SELECT ? UNION SELECT level / (1024 * ?) FROM %Q.'%q_segdir'", /* This statement is used to determine which level to read the input from ** when performing an incremental merge. It returns the absolute level number ** of the oldest level in the db that contains at least ? segments. Or, ** if no level in the FTS index contains more than ? segments, the statement ** returns zero rows. */ -/* 28 */ "SELECT level FROM %Q.'%q_segdir' GROUP BY level HAVING count(*)>=?" +/* 28 */ "SELECT level, count(*) AS cnt FROM %Q.'%q_segdir' " + " GROUP BY level HAVING cnt>=?" " ORDER BY (level %% 1024) ASC LIMIT 1", /* Estimate the upper limit on the number of leaf nodes in a new segment @@ -134252,7 +155193,18 @@ static int fts3SqlStmt( /* SQL_SELECT_MXLEVEL ** Return the largest relative level in the FTS index or indexes. */ -/* 36 */ "SELECT max( level %% 1024 ) FROM %Q.'%q_segdir'" +/* 36 */ "SELECT max( level %% 1024 ) FROM %Q.'%q_segdir'", + + /* Return segments in order from oldest to newest.*/ +/* 37 */ "SELECT level, idx, end_block " + "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ? " + "ORDER BY level DESC, idx ASC", + + /* Update statements used while promoting segments */ +/* 38 */ "UPDATE OR FAIL %Q.'%q_segdir' SET level=-1,idx=? " + "WHERE level=? AND idx=?", +/* 39 */ "UPDATE OR FAIL %Q.'%q_segdir' SET level=? WHERE level=-1" + }; int rc = SQLITE_OK; sqlite3_stmt *pStmt; @@ -134727,10 +155679,12 @@ static int fts3PendingTermsAdd( */ static int fts3PendingTermsDocid( Fts3Table *p, /* Full-text table handle */ + int bDelete, /* True if this op is a delete */ int iLangid, /* Language id of row being written */ sqlite_int64 iDocid /* Docid of row being written */ ){ assert( iLangid>=0 ); + assert( bDelete==1 || bDelete==0 ); /* TODO(shess) Explore whether partially flushing the buffer on ** forced-flush would provide better performance. I suspect that if @@ -134738,7 +155692,8 @@ static int fts3PendingTermsDocid( ** buffer was half empty, that would let the less frequent terms ** generate longer doclists. */ - if( iDocid<=p->iPrevDocid + if( iDocidiPrevDocid + || (iDocid==p->iPrevDocid && p->bPrevDelete==0) || p->iPrevLangid!=iLangid || p->nPendingData>p->nMaxPendingData ){ @@ -134747,6 +155702,7 @@ static int fts3PendingTermsDocid( } p->iPrevDocid = iDocid; p->iPrevLangid = iLangid; + p->bPrevDelete = bDelete; return SQLITE_OK; } @@ -134936,7 +155892,8 @@ static void fts3DeleteTerms( if( SQLITE_ROW==sqlite3_step(pSelect) ){ int i; int iLangid = langidFromSelect(p, pSelect); - rc = fts3PendingTermsDocid(p, iLangid, sqlite3_column_int64(pSelect, 0)); + i64 iDocid = sqlite3_column_int64(pSelect, 0); + rc = fts3PendingTermsDocid(p, 1, iLangid, iDocid); for(i=1; rc==SQLITE_OK && i<=p->nColumn; i++){ int iCol = i-1; if( p->abNotindexed[iCol]==0 ){ @@ -135184,14 +156141,19 @@ static int fts3SegReaderNext( if( fts3SegReaderIsPending(pReader) ){ Fts3HashElem *pElem = *(pReader->ppNextElem); - if( pElem==0 ){ - pReader->aNode = 0; - }else{ + sqlite3_free(pReader->aNode); + pReader->aNode = 0; + if( pElem ){ + char *aCopy; PendingList *pList = (PendingList *)fts3HashData(pElem); + int nCopy = pList->nData+1; pReader->zTerm = (char *)fts3HashKey(pElem); pReader->nTerm = fts3HashKeysize(pElem); - pReader->nNode = pReader->nDoclist = pList->nData + 1; - pReader->aNode = pReader->aDoclist = pList->aData; + aCopy = (char*)sqlite3_malloc(nCopy); + if( !aCopy ) return SQLITE_NOMEM; + memcpy(aCopy, pList->aData, nCopy); + pReader->nNode = pReader->nDoclist = nCopy; + pReader->aNode = pReader->aDoclist = aCopy; pReader->ppNextElem++; assert( pReader->aNode ); } @@ -135431,12 +156393,14 @@ SQLITE_PRIVATE int sqlite3Fts3MsrOvfl( ** second argument. */ SQLITE_PRIVATE void sqlite3Fts3SegReaderFree(Fts3SegReader *pReader){ - if( pReader && !fts3SegReaderIsPending(pReader) ){ - sqlite3_free(pReader->zTerm); + if( pReader ){ + if( !fts3SegReaderIsPending(pReader) ){ + sqlite3_free(pReader->zTerm); + } if( !fts3SegReaderIsRootOnly(pReader) ){ sqlite3_free(pReader->aNode); - sqlite3_blob_close(pReader->pBlob); } + sqlite3_blob_close(pReader->pBlob); } sqlite3_free(pReader); } @@ -135492,7 +156456,10 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderNew( ** an array of pending terms by term. This occurs as part of flushing ** the contents of the pending-terms hash table to the database. */ -static int fts3CompareElemByTerm(const void *lhs, const void *rhs){ +static int SQLITE_CDECL fts3CompareElemByTerm( + const void *lhs, + const void *rhs +){ char *z1 = fts3HashKey(*(Fts3HashElem **)lhs); char *z2 = fts3HashKey(*(Fts3HashElem **)rhs); int n1 = fts3HashKeysize(*(Fts3HashElem **)lhs); @@ -135793,6 +156760,7 @@ static int fts3WriteSegdir( sqlite3_int64 iStartBlock, /* Value for "start_block" field */ sqlite3_int64 iLeafEndBlock, /* Value for "leaves_end_block" field */ sqlite3_int64 iEndBlock, /* Value for "end_block" field */ + sqlite3_int64 nLeafData, /* Bytes of leaf data in segment */ char *zRoot, /* Blob value for "root" field */ int nRoot /* Number of bytes in buffer zRoot */ ){ @@ -135803,7 +156771,13 @@ static int fts3WriteSegdir( sqlite3_bind_int(pStmt, 2, iIdx); sqlite3_bind_int64(pStmt, 3, iStartBlock); sqlite3_bind_int64(pStmt, 4, iLeafEndBlock); - sqlite3_bind_int64(pStmt, 5, iEndBlock); + if( nLeafData==0 ){ + sqlite3_bind_int64(pStmt, 5, iEndBlock); + }else{ + char *zEnd = sqlite3_mprintf("%lld %lld", iEndBlock, nLeafData); + if( !zEnd ) return SQLITE_NOMEM; + sqlite3_bind_text(pStmt, 5, zEnd, -1, sqlite3_free); + } sqlite3_bind_blob(pStmt, 6, zRoot, nRoot, SQLITE_STATIC); sqlite3_step(pStmt); rc = sqlite3_reset(pStmt); @@ -136129,6 +157103,9 @@ static int fts3SegWriterAdd( nDoclist; /* Doclist data */ } + /* Increase the total number of bytes written to account for the new entry. */ + pWriter->nLeafData += nReq; + /* If the buffer currently allocated is too small for this entry, realloc ** the buffer to make it large enough. */ @@ -136200,13 +157177,13 @@ static int fts3SegWriterFlush( pWriter->iFirst, pWriter->iFree, &iLast, &zRoot, &nRoot); } if( rc==SQLITE_OK ){ - rc = fts3WriteSegdir( - p, iLevel, iIdx, pWriter->iFirst, iLastLeaf, iLast, zRoot, nRoot); + rc = fts3WriteSegdir(p, iLevel, iIdx, + pWriter->iFirst, iLastLeaf, iLast, pWriter->nLeafData, zRoot, nRoot); } }else{ /* The entire tree fits on the root node. Write it to the segdir table. */ - rc = fts3WriteSegdir( - p, iLevel, iIdx, 0, 0, 0, pWriter->aData, pWriter->nData); + rc = fts3WriteSegdir(p, iLevel, iIdx, + 0, 0, 0, pWriter->nLeafData, pWriter->aData, pWriter->nData); } p->nLeafAdd++; return rc; @@ -136290,6 +157267,37 @@ static int fts3SegmentMaxLevel( return sqlite3_reset(pStmt); } +/* +** iAbsLevel is an absolute level that may be assumed to exist within +** the database. This function checks if it is the largest level number +** within its index. Assuming no error occurs, *pbMax is set to 1 if +** iAbsLevel is indeed the largest level, or 0 otherwise, and SQLITE_OK +** is returned. If an error occurs, an error code is returned and the +** final value of *pbMax is undefined. +*/ +static int fts3SegmentIsMaxLevel(Fts3Table *p, i64 iAbsLevel, int *pbMax){ + + /* Set pStmt to the compiled version of: + ** + ** SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ? + ** + ** (1024 is actually the value of macro FTS3_SEGDIR_PREFIXLEVEL_STR). + */ + sqlite3_stmt *pStmt; + int rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0); + if( rc!=SQLITE_OK ) return rc; + sqlite3_bind_int64(pStmt, 1, iAbsLevel+1); + sqlite3_bind_int64(pStmt, 2, + ((iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL + ); + + *pbMax = 0; + if( SQLITE_ROW==sqlite3_step(pStmt) ){ + *pbMax = sqlite3_column_type(pStmt, 0)==SQLITE_NULL; + } + return sqlite3_reset(pStmt); +} + /* ** Delete all entries in the %_segments table associated with the segment ** opened with seg-reader pSeg. This function does not affect the contents @@ -136825,6 +157833,140 @@ SQLITE_PRIVATE void sqlite3Fts3SegReaderFinish( } } +/* +** Decode the "end_block" field, selected by column iCol of the SELECT +** statement passed as the first argument. +** +** The "end_block" field may contain either an integer, or a text field +** containing the text representation of two non-negative integers separated +** by one or more space (0x20) characters. In the first case, set *piEndBlock +** to the integer value and *pnByte to zero before returning. In the second, +** set *piEndBlock to the first value and *pnByte to the second. +*/ +static void fts3ReadEndBlockField( + sqlite3_stmt *pStmt, + int iCol, + i64 *piEndBlock, + i64 *pnByte +){ + const unsigned char *zText = sqlite3_column_text(pStmt, iCol); + if( zText ){ + int i; + int iMul = 1; + i64 iVal = 0; + for(i=0; zText[i]>='0' && zText[i]<='9'; i++){ + iVal = iVal*10 + (zText[i] - '0'); + } + *piEndBlock = iVal; + while( zText[i]==' ' ) i++; + iVal = 0; + if( zText[i]=='-' ){ + i++; + iMul = -1; + } + for(/* no-op */; zText[i]>='0' && zText[i]<='9'; i++){ + iVal = iVal*10 + (zText[i] - '0'); + } + *pnByte = (iVal * (i64)iMul); + } +} + + +/* +** A segment of size nByte bytes has just been written to absolute level +** iAbsLevel. Promote any segments that should be promoted as a result. +*/ +static int fts3PromoteSegments( + Fts3Table *p, /* FTS table handle */ + sqlite3_int64 iAbsLevel, /* Absolute level just updated */ + sqlite3_int64 nByte /* Size of new segment at iAbsLevel */ +){ + int rc = SQLITE_OK; + sqlite3_stmt *pRange; + + rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE2, &pRange, 0); + + if( rc==SQLITE_OK ){ + int bOk = 0; + i64 iLast = (iAbsLevel/FTS3_SEGDIR_MAXLEVEL + 1) * FTS3_SEGDIR_MAXLEVEL - 1; + i64 nLimit = (nByte*3)/2; + + /* Loop through all entries in the %_segdir table corresponding to + ** segments in this index on levels greater than iAbsLevel. If there is + ** at least one such segment, and it is possible to determine that all + ** such segments are smaller than nLimit bytes in size, they will be + ** promoted to level iAbsLevel. */ + sqlite3_bind_int64(pRange, 1, iAbsLevel+1); + sqlite3_bind_int64(pRange, 2, iLast); + while( SQLITE_ROW==sqlite3_step(pRange) ){ + i64 nSize = 0, dummy; + fts3ReadEndBlockField(pRange, 2, &dummy, &nSize); + if( nSize<=0 || nSize>nLimit ){ + /* If nSize==0, then the %_segdir.end_block field does not not + ** contain a size value. This happens if it was written by an + ** old version of FTS. In this case it is not possible to determine + ** the size of the segment, and so segment promotion does not + ** take place. */ + bOk = 0; + break; + } + bOk = 1; + } + rc = sqlite3_reset(pRange); + + if( bOk ){ + int iIdx = 0; + sqlite3_stmt *pUpdate1 = 0; + sqlite3_stmt *pUpdate2 = 0; + + if( rc==SQLITE_OK ){ + rc = fts3SqlStmt(p, SQL_UPDATE_LEVEL_IDX, &pUpdate1, 0); + } + if( rc==SQLITE_OK ){ + rc = fts3SqlStmt(p, SQL_UPDATE_LEVEL, &pUpdate2, 0); + } + + if( rc==SQLITE_OK ){ + + /* Loop through all %_segdir entries for segments in this index with + ** levels equal to or greater than iAbsLevel. As each entry is visited, + ** updated it to set (level = -1) and (idx = N), where N is 0 for the + ** oldest segment in the range, 1 for the next oldest, and so on. + ** + ** In other words, move all segments being promoted to level -1, + ** setting the "idx" fields as appropriate to keep them in the same + ** order. The contents of level -1 (which is never used, except + ** transiently here), will be moved back to level iAbsLevel below. */ + sqlite3_bind_int64(pRange, 1, iAbsLevel); + while( SQLITE_ROW==sqlite3_step(pRange) ){ + sqlite3_bind_int(pUpdate1, 1, iIdx++); + sqlite3_bind_int(pUpdate1, 2, sqlite3_column_int(pRange, 0)); + sqlite3_bind_int(pUpdate1, 3, sqlite3_column_int(pRange, 1)); + sqlite3_step(pUpdate1); + rc = sqlite3_reset(pUpdate1); + if( rc!=SQLITE_OK ){ + sqlite3_reset(pRange); + break; + } + } + } + if( rc==SQLITE_OK ){ + rc = sqlite3_reset(pRange); + } + + /* Move level -1 to level iAbsLevel */ + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pUpdate2, 1, iAbsLevel); + sqlite3_step(pUpdate2); + rc = sqlite3_reset(pUpdate2); + } + } + } + + + return rc; +} + /* ** Merge all level iLevel segments in the database into a single ** iLevel+1 segment. Or, if iLevel<0, merge all segments into a @@ -136849,6 +157991,7 @@ static int fts3SegmentMerge( Fts3SegFilter filter; /* Segment term filter condition */ Fts3MultiSegReader csr; /* Cursor to iterate through level(s) */ int bIgnoreEmpty = 0; /* True to ignore empty segments */ + i64 iMaxLevel = 0; /* Max level number for this index/langid */ assert( iLevel==FTS3_SEGCURSOR_ALL || iLevel==FTS3_SEGCURSOR_PENDING @@ -136860,30 +158003,35 @@ static int fts3SegmentMerge( rc = sqlite3Fts3SegReaderCursor(p, iLangid, iIndex, iLevel, 0, 0, 1, 0, &csr); if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished; + if( iLevel!=FTS3_SEGCURSOR_PENDING ){ + rc = fts3SegmentMaxLevel(p, iLangid, iIndex, &iMaxLevel); + if( rc!=SQLITE_OK ) goto finished; + } + if( iLevel==FTS3_SEGCURSOR_ALL ){ /* This call is to merge all segments in the database to a single ** segment. The level of the new segment is equal to the numerically ** greatest segment level currently present in the database for this ** index. The idx of the new segment is always 0. */ - if( csr.nSegment==1 ){ + if( csr.nSegment==1 && 0==fts3SegReaderIsPending(csr.apSegment[0]) ){ rc = SQLITE_DONE; goto finished; } - rc = fts3SegmentMaxLevel(p, iLangid, iIndex, &iNewLevel); + iNewLevel = iMaxLevel; bIgnoreEmpty = 1; - }else if( iLevel==FTS3_SEGCURSOR_PENDING ){ - iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, 0); - rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, 0, &iIdx); }else{ /* This call is to merge all segments at level iLevel. find the next ** available segment index at level iLevel+1. The call to ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to ** a single iLevel+2 segment if necessary. */ - rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, iLevel+1, &iIdx); + assert( FTS3_SEGCURSOR_PENDING==-1 ); iNewLevel = getAbsoluteLevel(p, iLangid, iIndex, iLevel+1); + rc = fts3AllocateSegdirIdx(p, iLangid, iIndex, iLevel+1, &iIdx); + bIgnoreEmpty = (iLevel!=FTS3_SEGCURSOR_PENDING) && (iNewLevel>iMaxLevel); } if( rc!=SQLITE_OK ) goto finished; + assert( csr.nSegment>0 ); assert( iNewLevel>=getAbsoluteLevel(p, iLangid, iIndex, 0) ); assert( iNewLevelnLeafData); + } + } + } finished: fts3SegWriterFree(pWriter); @@ -136918,7 +158073,7 @@ static int fts3SegmentMerge( /* -** Flush the contents of pendingTerms to level 0 segments. +** Flush the contents of pendingTerms to level 0 segments. */ SQLITE_PRIVATE int sqlite3Fts3PendingTermsFlush(Fts3Table *p){ int rc = SQLITE_OK; @@ -136934,14 +158089,19 @@ SQLITE_PRIVATE int sqlite3Fts3PendingTermsFlush(Fts3Table *p){ ** estimate the number of leaf blocks of content to be written */ if( rc==SQLITE_OK && p->bHasStat - && p->bAutoincrmerge==0xff && p->nLeafAdd>0 + && p->nAutoincrmerge==0xff && p->nLeafAdd>0 ){ sqlite3_stmt *pStmt = 0; rc = fts3SqlStmt(p, SQL_SELECT_STAT, &pStmt, 0); if( rc==SQLITE_OK ){ sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE); rc = sqlite3_step(pStmt); - p->bAutoincrmerge = (rc==SQLITE_ROW && sqlite3_column_int(pStmt, 0)); + if( rc==SQLITE_ROW ){ + p->nAutoincrmerge = sqlite3_column_int(pStmt, 0); + if( p->nAutoincrmerge==1 ) p->nAutoincrmerge = 8; + }else if( rc==SQLITE_DONE ){ + p->nAutoincrmerge = 0; + } rc = sqlite3_reset(pStmt); } } @@ -137115,7 +158275,8 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0); if( rc==SQLITE_OK ){ int rc2; - sqlite3_bind_int(pAllLangid, 1, p->nIndex); + sqlite3_bind_int(pAllLangid, 1, p->iPrevLangid); + sqlite3_bind_int(pAllLangid, 2, p->nIndex); while( sqlite3_step(pAllLangid)==SQLITE_ROW ){ int i; int iLangid = sqlite3_column_int(pAllLangid, 0); @@ -137182,7 +158343,7 @@ static int fts3DoRebuild(Fts3Table *p){ while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ int iCol; int iLangid = langidFromSelect(p, pStmt); - rc = fts3PendingTermsDocid(p, iLangid, sqlite3_column_int64(pStmt, 0)); + rc = fts3PendingTermsDocid(p, 0, iLangid, sqlite3_column_int64(pStmt, 0)); memset(aSz, 0, sizeof(aSz[0]) * (p->nColumn+1)); for(iCol=0; rc==SQLITE_OK && iColnColumn; iCol++){ if( p->abNotindexed[iCol]==0 ){ @@ -137309,6 +158470,8 @@ struct IncrmergeWriter { int iIdx; /* Index of *output* segment in iAbsLevel+1 */ sqlite3_int64 iStart; /* Block number of first allocated block */ sqlite3_int64 iEnd; /* Block number of last allocated block */ + sqlite3_int64 nLeafData; /* Bytes of leaf page data so far */ + u8 bNoLeafData; /* If true, store 0 for segment size */ NodeWriter aNodeWriter[FTS_MAX_APPENDABLE_HEIGHT]; }; @@ -137647,8 +158810,8 @@ static int fts3IncrmergeAppend( nSpace += sqlite3Fts3VarintLen(nDoclist) + nDoclist; } + pWriter->nLeafData += nSpace; blobGrowBuffer(&pLeaf->block, pLeaf->block.n + nSpace, &rc); - if( rc==SQLITE_OK ){ if( pLeaf->block.n==0 ){ pLeaf->block.n = 1; @@ -137747,6 +158910,7 @@ static void fts3IncrmergeRelease( pWriter->iStart, /* start_block */ pWriter->aNodeWriter[0].iBlock, /* leaves_end_block */ pWriter->iEnd, /* end_block */ + (pWriter->bNoLeafData==0 ? pWriter->nLeafData : 0), /* end_block */ pRoot->block.a, pRoot->block.n /* root */ ); } @@ -137848,7 +159012,11 @@ static int fts3IncrmergeLoad( if( sqlite3_step(pSelect)==SQLITE_ROW ){ iStart = sqlite3_column_int64(pSelect, 1); iLeafEnd = sqlite3_column_int64(pSelect, 2); - iEnd = sqlite3_column_int64(pSelect, 3); + fts3ReadEndBlockField(pSelect, 3, &iEnd, &pWriter->nLeafData); + if( pWriter->nLeafData<0 ){ + pWriter->nLeafData = pWriter->nLeafData * -1; + } + pWriter->bNoLeafData = (pWriter->nLeafData==0); nRoot = sqlite3_column_bytes(pSelect, 4); aRoot = sqlite3_column_blob(pSelect, 4); }else{ @@ -138440,7 +159608,7 @@ static int fts3IncrmergeHintPop(Blob *pHint, i64 *piAbsLevel, int *pnInput){ pHint->n = i; i += sqlite3Fts3GetVarint(&pHint->a[i], piAbsLevel); i += fts3GetVarint32(&pHint->a[i], pnInput); - if( i!=nHint ) return SQLITE_CORRUPT_VTAB; + if( i!=nHint ) return FTS_CORRUPT_VTAB; return SQLITE_OK; } @@ -138449,11 +159617,11 @@ static int fts3IncrmergeHintPop(Blob *pHint, i64 *piAbsLevel, int *pnInput){ /* ** Attempt an incremental merge that writes nMerge leaf blocks. ** -** Incremental merges happen nMin segments at a time. The two -** segments to be merged are the nMin oldest segments (the ones with -** the smallest indexes) in the highest level that contains at least -** nMin segments. Multiple merges might occur in an attempt to write the -** quota of nMerge leaf blocks. +** Incremental merges happen nMin segments at a time. The segments +** to be merged are the nMin oldest segments (the ones with the smallest +** values for the _segdir.idx field) in the highest level that contains +** at least nMin segments. Multiple merges might occur in an attempt to +** write the quota of nMerge leaf blocks. */ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ int rc; /* Return code */ @@ -138478,6 +159646,7 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ const i64 nMod = FTS3_SEGDIR_MAXLEVEL * p->nIndex; sqlite3_stmt *pFindLevel = 0; /* SQL used to determine iAbsLevel */ int bUseHint = 0; /* True if attempting to append */ + int iIdx = 0; /* Largest idx in level (iAbsLevel+1) */ /* Search the %_segdir table for the absolute level with the smallest ** relative level number that contains at least nMin segments, if any. @@ -138486,10 +159655,11 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ ** set nSeg to -1. */ rc = fts3SqlStmt(p, SQL_FIND_MERGE_LEVEL, &pFindLevel, 0); - sqlite3_bind_int(pFindLevel, 1, nMin); + sqlite3_bind_int(pFindLevel, 1, MAX(2, nMin)); if( sqlite3_step(pFindLevel)==SQLITE_ROW ){ iAbsLevel = sqlite3_column_int64(pFindLevel, 0); - nSeg = nMin; + nSeg = sqlite3_column_int(pFindLevel, 1); + assert( nSeg>=2 ); }else{ nSeg = -1; } @@ -138531,6 +159701,19 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ ** to start work on some other level. */ memset(pWriter, 0, nAlloc); pFilter->flags = FTS3_SEGMENT_REQUIRE_POS; + + if( rc==SQLITE_OK ){ + rc = fts3IncrmergeOutputIdx(p, iAbsLevel, &iIdx); + assert( bUseHint==1 || bUseHint==0 ); + if( iIdx==0 || (bUseHint && iIdx==1) ){ + int bIgnore = 0; + rc = fts3SegmentIsMaxLevel(p, iAbsLevel+1, &bIgnore); + if( bIgnore ){ + pFilter->flags |= FTS3_SEGMENT_IGNORE_EMPTY; + } + } + } + if( rc==SQLITE_OK ){ rc = fts3IncrmergeCsr(p, iAbsLevel, nSeg, pCsr); } @@ -138538,16 +159721,12 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ && SQLITE_OK==(rc = sqlite3Fts3SegReaderStart(p, pCsr, pFilter)) && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pCsr)) ){ - int iIdx = 0; /* Largest idx in level (iAbsLevel+1) */ - rc = fts3IncrmergeOutputIdx(p, iAbsLevel, &iIdx); - if( rc==SQLITE_OK ){ - if( bUseHint && iIdx>0 ){ - const char *zKey = pCsr->zTerm; - int nKey = pCsr->nTerm; - rc = fts3IncrmergeLoad(p, iAbsLevel, iIdx-1, zKey, nKey, pWriter); - }else{ - rc = fts3IncrmergeWriter(p, iAbsLevel, iIdx, pCsr, pWriter); - } + if( bUseHint && iIdx>0 ){ + const char *zKey = pCsr->zTerm; + int nKey = pCsr->nTerm; + rc = fts3IncrmergeLoad(p, iAbsLevel, iIdx-1, zKey, nKey, pWriter); + }else{ + rc = fts3IncrmergeWriter(p, iAbsLevel, iIdx, pCsr, pWriter); } if( rc==SQLITE_OK && pWriter->nLeafEst ){ @@ -138569,7 +159748,13 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){ } } + if( nSeg!=0 ){ + pWriter->nLeafData = pWriter->nLeafData * -1; + } fts3IncrmergeRelease(p, pWriter, &rc); + if( nSeg==0 && pWriter->bNoLeafData==0 ){ + fts3PromoteSegments(p, iAbsLevel+1, pWriter->nLeafData); + } } sqlite3Fts3SegReaderFinish(pCsr); @@ -138656,7 +159841,10 @@ static int fts3DoAutoincrmerge( ){ int rc = SQLITE_OK; sqlite3_stmt *pStmt = 0; - p->bAutoincrmerge = fts3Getint(&zParam)!=0; + p->nAutoincrmerge = fts3Getint(&zParam); + if( p->nAutoincrmerge==1 || p->nAutoincrmerge>FTS3_MERGE_COUNT ){ + p->nAutoincrmerge = 8; + } if( !p->bHasStat ){ assert( p->bFts4==0 ); sqlite3Fts3CreateStatTable(&rc, p); @@ -138665,7 +159853,7 @@ static int fts3DoAutoincrmerge( rc = fts3SqlStmt(p, SQL_REPLACE_STAT, &pStmt, 0); if( rc ) return rc; sqlite3_bind_int(pStmt, 1, FTS_STAT_AUTOINCRMERGE); - sqlite3_bind_int(pStmt, 2, p->bAutoincrmerge); + sqlite3_bind_int(pStmt, 2, p->nAutoincrmerge); sqlite3_step(pStmt); rc = sqlite3_reset(pStmt); return rc; @@ -138789,7 +159977,8 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0); if( rc==SQLITE_OK ){ int rc2; - sqlite3_bind_int(pAllLangid, 1, p->nIndex); + sqlite3_bind_int(pAllLangid, 1, p->iPrevLangid); + sqlite3_bind_int(pAllLangid, 2, p->nIndex); while( rc==SQLITE_OK && sqlite3_step(pAllLangid)==SQLITE_ROW ){ int iLangid = sqlite3_column_int(pAllLangid, 0); int i; @@ -138802,7 +159991,6 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ } /* This block calculates the checksum according to the %_content table */ - rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0); if( rc==SQLITE_OK ){ sqlite3_tokenizer_module const *pModule = p->pTokenizer->pModule; sqlite3_stmt *pStmt = 0; @@ -138822,34 +160010,36 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){ int iCol; for(iCol=0; rc==SQLITE_OK && iColnColumn; iCol++){ - const char *zText = (const char *)sqlite3_column_text(pStmt, iCol+1); - int nText = sqlite3_column_bytes(pStmt, iCol+1); - sqlite3_tokenizer_cursor *pT = 0; + if( p->abNotindexed[iCol]==0 ){ + const char *zText = (const char *)sqlite3_column_text(pStmt, iCol+1); + int nText = sqlite3_column_bytes(pStmt, iCol+1); + sqlite3_tokenizer_cursor *pT = 0; - rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, nText, &pT); - while( rc==SQLITE_OK ){ - char const *zToken; /* Buffer containing token */ - int nToken = 0; /* Number of bytes in token */ - int iDum1 = 0, iDum2 = 0; /* Dummy variables */ - int iPos = 0; /* Position of token in zText */ + rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, nText,&pT); + while( rc==SQLITE_OK ){ + char const *zToken; /* Buffer containing token */ + int nToken = 0; /* Number of bytes in token */ + int iDum1 = 0, iDum2 = 0; /* Dummy variables */ + int iPos = 0; /* Position of token in zText */ - rc = pModule->xNext(pT, &zToken, &nToken, &iDum1, &iDum2, &iPos); - if( rc==SQLITE_OK ){ - int i; - cksum2 = cksum2 ^ fts3ChecksumEntry( - zToken, nToken, iLang, 0, iDocid, iCol, iPos - ); - for(i=1; inIndex; i++){ - if( p->aIndex[i].nPrefix<=nToken ){ - cksum2 = cksum2 ^ fts3ChecksumEntry( - zToken, p->aIndex[i].nPrefix, iLang, i, iDocid, iCol, iPos - ); + rc = pModule->xNext(pT, &zToken, &nToken, &iDum1, &iDum2, &iPos); + if( rc==SQLITE_OK ){ + int i; + cksum2 = cksum2 ^ fts3ChecksumEntry( + zToken, nToken, iLang, 0, iDocid, iCol, iPos + ); + for(i=1; inIndex; i++){ + if( p->aIndex[i].nPrefix<=nToken ){ + cksum2 = cksum2 ^ fts3ChecksumEntry( + zToken, p->aIndex[i].nPrefix, iLang, i, iDocid, iCol, iPos + ); + } } } } + if( pT ) pModule->xClose(pT); + if( rc==SQLITE_DONE ) rc = SQLITE_OK; } - if( pT ) pModule->xClose(pT); - if( rc==SQLITE_DONE ) rc = SQLITE_OK; } } @@ -138897,7 +160087,7 @@ static int fts3DoIntegrityCheck( int rc; int bOk = 0; rc = fts3IntegrityCheck(p, &bOk); - if( rc==SQLITE_OK && bOk==0 ) rc = SQLITE_CORRUPT_VTAB; + if( rc==SQLITE_OK && bOk==0 ) rc = FTS_CORRUPT_VTAB; return rc; } @@ -139154,6 +160344,10 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( int nChng = 0; /* Net change in number of documents */ int bInsertDone = 0; + /* At this point it must be known if the %_stat table exists or not. + ** So bHasStat may not be 2. */ + assert( p->bHasStat==0 || p->bHasStat==1 ); + assert( p->pSegments==0 ); assert( nArg==1 /* DELETE operations */ @@ -139255,7 +160449,7 @@ SQLITE_PRIVATE int sqlite3Fts3UpdateMethod( } } if( rc==SQLITE_OK && (!isRemove || *pRowid!=p->iPrevDocid ) ){ - rc = fts3PendingTermsDocid(p, iLangid, *pRowid); + rc = fts3PendingTermsDocid(p, 0, iLangid, *pRowid); } if( rc==SQLITE_OK ){ assert( p->iPrevDocid==*pRowid ); @@ -139316,6 +160510,7 @@ SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *p){ ****************************************************************************** */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -139331,6 +160526,8 @@ SQLITE_PRIVATE int sqlite3Fts3Optimize(Fts3Table *p){ #define FTS3_MATCHINFO_LENGTH 'l' /* nCol values */ #define FTS3_MATCHINFO_LCS 's' /* nCol values */ #define FTS3_MATCHINFO_HITS 'x' /* 3*nCol*nPhrase values */ +#define FTS3_MATCHINFO_LHITS 'y' /* nCol*nPhrase values */ +#define FTS3_MATCHINFO_LHITS_BM 'b' /* nCol*nPhrase values */ /* ** The default value for the second argument to matchinfo(). @@ -139392,9 +160589,22 @@ struct MatchInfo { int nCol; /* Number of columns in table */ int nPhrase; /* Number of matchable phrases in query */ sqlite3_int64 nDoc; /* Number of docs in database */ + char flag; u32 *aMatchinfo; /* Pre-allocated buffer */ }; +/* +** An instance of this structure is used to manage a pair of buffers, each +** (nElem * sizeof(u32)) bytes in size. See the MatchinfoBuffer code below +** for details. +*/ +struct MatchinfoBuffer { + u8 aRef[3]; + int nElem; + int bGlobal; /* Set if global data is loaded */ + char *zMatchinfo; + u32 aMatchinfo[1]; +}; /* @@ -139410,6 +160620,97 @@ struct StrBuffer { }; +/************************************************************************* +** Start of MatchinfoBuffer code. +*/ + +/* +** Allocate a two-slot MatchinfoBuffer object. +*/ +static MatchinfoBuffer *fts3MIBufferNew(int nElem, const char *zMatchinfo){ + MatchinfoBuffer *pRet; + int nByte = sizeof(u32) * (2*nElem + 1) + sizeof(MatchinfoBuffer); + int nStr = (int)strlen(zMatchinfo); + + pRet = sqlite3_malloc(nByte + nStr+1); + if( pRet ){ + memset(pRet, 0, nByte); + pRet->aMatchinfo[0] = (u8*)(&pRet->aMatchinfo[1]) - (u8*)pRet; + pRet->aMatchinfo[1+nElem] = pRet->aMatchinfo[0] + sizeof(u32)*(nElem+1); + pRet->nElem = nElem; + pRet->zMatchinfo = ((char*)pRet) + nByte; + memcpy(pRet->zMatchinfo, zMatchinfo, nStr+1); + pRet->aRef[0] = 1; + } + + return pRet; +} + +static void fts3MIBufferFree(void *p){ + MatchinfoBuffer *pBuf = (MatchinfoBuffer*)((u8*)p - ((u32*)p)[-1]); + + assert( (u32*)p==&pBuf->aMatchinfo[1] + || (u32*)p==&pBuf->aMatchinfo[pBuf->nElem+2] + ); + if( (u32*)p==&pBuf->aMatchinfo[1] ){ + pBuf->aRef[1] = 0; + }else{ + pBuf->aRef[2] = 0; + } + + if( pBuf->aRef[0]==0 && pBuf->aRef[1]==0 && pBuf->aRef[2]==0 ){ + sqlite3_free(pBuf); + } +} + +static void (*fts3MIBufferAlloc(MatchinfoBuffer *p, u32 **paOut))(void*){ + void (*xRet)(void*) = 0; + u32 *aOut = 0; + + if( p->aRef[1]==0 ){ + p->aRef[1] = 1; + aOut = &p->aMatchinfo[1]; + xRet = fts3MIBufferFree; + } + else if( p->aRef[2]==0 ){ + p->aRef[2] = 1; + aOut = &p->aMatchinfo[p->nElem+2]; + xRet = fts3MIBufferFree; + }else{ + aOut = (u32*)sqlite3_malloc(p->nElem * sizeof(u32)); + if( aOut ){ + xRet = sqlite3_free; + if( p->bGlobal ) memcpy(aOut, &p->aMatchinfo[1], p->nElem*sizeof(u32)); + } + } + + *paOut = aOut; + return xRet; +} + +static void fts3MIBufferSetGlobal(MatchinfoBuffer *p){ + p->bGlobal = 1; + memcpy(&p->aMatchinfo[2+p->nElem], &p->aMatchinfo[1], p->nElem*sizeof(u32)); +} + +/* +** Free a MatchinfoBuffer object allocated using fts3MIBufferNew() +*/ +SQLITE_PRIVATE void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p){ + if( p ){ + assert( p->aRef[0]==1 ); + p->aRef[0] = 0; + if( p->aRef[0]==0 && p->aRef[1]==0 && p->aRef[2]==0 ){ + sqlite3_free(p); + } + } +} + +/* +** End of MatchinfoBuffer code. +*************************************************************************/ + + /* ** This function is used to help iterate through a position-list. A position ** list is a list of unique integers, sorted from smallest to largest. Each @@ -139446,7 +160747,7 @@ static int fts3ExprIterate2( void *pCtx /* Second argument to pass to callback */ ){ int rc; /* Return code */ - int eType = pExpr->eType; /* Type of expression node pExpr */ + int eType = pExpr->eType; /* Type of expression node pExpr */ if( eType!=FTSQUERY_PHRASE ){ assert( pExpr->pLeft && pExpr->pRight ); @@ -139480,6 +160781,7 @@ static int fts3ExprIterate( return fts3ExprIterate2(pExpr, &iPhrase, x, pCtx); } + /* ** This is an fts3ExprIterate() callback used while loading the doclists ** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also @@ -139524,8 +160826,7 @@ static int fts3ExprLoadDoclists( static int fts3ExprPhraseCountCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ (*(int *)ctx)++; - UNUSED_PARAMETER(pExpr); - UNUSED_PARAMETER(iPhrase); + pExpr->iPhrase = iPhrase; return SQLITE_OK; } static int fts3ExprPhraseCount(Fts3Expr *pExpr){ @@ -139746,37 +161047,39 @@ static int fts3BestSnippet( sIter.nSnippet = nSnippet; sIter.nPhrase = nList; sIter.iCurrent = -1; - (void)fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void *)&sIter); + rc = fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void*)&sIter); + if( rc==SQLITE_OK ){ - /* Set the *pmSeen output variable. */ - for(i=0; iiCol = iCol; - while( !fts3SnippetNextCandidate(&sIter) ){ - int iPos; - int iScore; - u64 mCover; - u64 mHighlight; - fts3SnippetDetails(&sIter, mCovered, &iPos, &iScore, &mCover, &mHighlight); - assert( iScore>=0 ); - if( iScore>iBestScore ){ - pFragment->iPos = iPos; - pFragment->hlmask = mHighlight; - pFragment->covered = mCover; - iBestScore = iScore; + /* Loop through all candidate snippets. Store the best snippet in + ** *pFragment. Store its associated 'score' in iBestScore. + */ + pFragment->iCol = iCol; + while( !fts3SnippetNextCandidate(&sIter) ){ + int iPos; + int iScore; + u64 mCover; + u64 mHighlite; + fts3SnippetDetails(&sIter, mCovered, &iPos, &iScore, &mCover,&mHighlite); + assert( iScore>=0 ); + if( iScore>iBestScore ){ + pFragment->iPos = iPos; + pFragment->hlmask = mHighlite; + pFragment->covered = mCover; + iBestScore = iScore; + } } - } + *piScore = iBestScore; + } sqlite3_free(sIter.aPhrase); - *piScore = iBestScore; - return SQLITE_OK; + return rc; } @@ -139984,8 +161287,12 @@ static int fts3SnippetText( ** required. They are required if (a) this is not the first fragment, ** or (b) this fragment does not begin at position 0 of its column. */ - if( rc==SQLITE_OK && (iPos>0 || iFragment>0) ){ - rc = fts3StringAppend(pOut, zEllipsis, -1); + if( rc==SQLITE_OK ){ + if( iPos>0 || iFragment>0 ){ + rc = fts3StringAppend(pOut, zEllipsis, -1); + }else if( iBegin ){ + rc = fts3StringAppend(pOut, zDoc, iBegin); + } } if( rc!=SQLITE_OK || iCurrentpCursor->base.pVtab; + int iStart; + Fts3Phrase *pPhrase = pExpr->pPhrase; + char *pIter = pPhrase->doclist.pList; + int iCol = 0; + + assert( p->flag==FTS3_MATCHINFO_LHITS_BM || p->flag==FTS3_MATCHINFO_LHITS ); + if( p->flag==FTS3_MATCHINFO_LHITS ){ + iStart = pExpr->iPhrase * p->nCol; + }else{ + iStart = pExpr->iPhrase * ((p->nCol + 31) / 32); + } + + while( 1 ){ + int nHit = fts3ColumnlistCount(&pIter); + if( (pPhrase->iColumn>=pTab->nColumn || pPhrase->iColumn==iCol) ){ + if( p->flag==FTS3_MATCHINFO_LHITS ){ + p->aMatchinfo[iStart + iCol] = (u32)nHit; + }else if( nHit ){ + p->aMatchinfo[iStart + (iCol+1)/32] |= (1 << (iCol&0x1F)); + } + } + assert( *pIter==0x00 || *pIter==0x01 ); + if( *pIter!=0x01 ) break; + pIter++; + pIter += fts3GetVarint32(pIter, &iCol); + } +} + +/* +** Gather the results for matchinfo directives 'y' and 'b'. +*/ +static void fts3ExprLHitGather( + Fts3Expr *pExpr, + MatchInfo *p +){ + assert( (pExpr->pLeft==0)==(pExpr->pRight==0) ); + if( pExpr->bEof==0 && pExpr->iDocid==p->pCursor->iPrevId ){ + if( pExpr->pLeft ){ + fts3ExprLHitGather(pExpr->pLeft, p); + fts3ExprLHitGather(pExpr->pRight, p); + }else{ + fts3ExprLHits(pExpr, p); + } + } +} + /* ** fts3ExprIterate() callback used to collect the "global" matchinfo stats ** for a single query. @@ -140119,10 +161480,12 @@ static int fts3MatchinfoCheck( || (cArg==FTS3_MATCHINFO_LENGTH && pTab->bHasDocsize) || (cArg==FTS3_MATCHINFO_LCS) || (cArg==FTS3_MATCHINFO_HITS) + || (cArg==FTS3_MATCHINFO_LHITS) + || (cArg==FTS3_MATCHINFO_LHITS_BM) ){ return SQLITE_OK; } - *pzErr = sqlite3_mprintf("unrecognized matchinfo request: %c", cArg); + sqlite3Fts3ErrMsg(pzErr, "unrecognized matchinfo request: %c", cArg); return SQLITE_ERROR; } @@ -140142,6 +161505,14 @@ static int fts3MatchinfoSize(MatchInfo *pInfo, char cArg){ nVal = pInfo->nCol; break; + case FTS3_MATCHINFO_LHITS: + nVal = pInfo->nCol * pInfo->nPhrase; + break; + + case FTS3_MATCHINFO_LHITS_BM: + nVal = pInfo->nPhrase * ((pInfo->nCol + 31) / 32); + break; + default: assert( cArg==FTS3_MATCHINFO_HITS ); nVal = pInfo->nCol * pInfo->nPhrase * 3; @@ -140336,7 +161707,7 @@ static int fts3MatchinfoValues( sqlite3_stmt *pSelect = 0; for(i=0; rc==SQLITE_OK && zArg[i]; i++){ - + pInfo->flag = zArg[i]; switch( zArg[i] ){ case FTS3_MATCHINFO_NPHRASE: if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nPhrase; @@ -140396,6 +161767,14 @@ static int fts3MatchinfoValues( } break; + case FTS3_MATCHINFO_LHITS_BM: + case FTS3_MATCHINFO_LHITS: { + int nZero = fts3MatchinfoSize(pInfo, zArg[i]) * sizeof(u32); + memset(pInfo->aMatchinfo, 0, nZero); + fts3ExprLHitGather(pCsr->pExpr, pInfo); + break; + } + default: { Fts3Expr *pExpr; assert( zArg[i]==FTS3_MATCHINFO_HITS ); @@ -140408,6 +161787,7 @@ static int fts3MatchinfoValues( if( rc!=SQLITE_OK ) break; } rc = fts3ExprIterate(pExpr, fts3ExprGlobalHitsCb,(void*)pInfo); + sqlite3Fts3EvalTestDeferred(pCsr, &rc); if( rc!=SQLITE_OK ) break; } (void)fts3ExprIterate(pExpr, fts3ExprLocalHitsCb,(void*)pInfo); @@ -140427,7 +161807,8 @@ static int fts3MatchinfoValues( ** Populate pCsr->aMatchinfo[] with data for the current row. The ** 'matchinfo' data is an array of 32-bit unsigned integers (C type u32). */ -static int fts3GetMatchinfo( +static void fts3GetMatchinfo( + sqlite3_context *pCtx, /* Return results here */ Fts3Cursor *pCsr, /* FTS3 Cursor object */ const char *zArg /* Second argument to matchinfo() function */ ){ @@ -140436,6 +161817,9 @@ static int fts3GetMatchinfo( int rc = SQLITE_OK; int bGlobal = 0; /* Collect 'global' stats as well as local */ + u32 *aOut = 0; + void (*xDestroyOut)(void*) = 0; + memset(&sInfo, 0, sizeof(MatchInfo)); sInfo.pCursor = pCsr; sInfo.nCol = pTab->nColumn; @@ -140443,21 +161827,18 @@ static int fts3GetMatchinfo( /* If there is cached matchinfo() data, but the format string for the ** cache does not match the format string for this request, discard ** the cached data. */ - if( pCsr->zMatchinfo && strcmp(pCsr->zMatchinfo, zArg) ){ - assert( pCsr->aMatchinfo ); - sqlite3_free(pCsr->aMatchinfo); - pCsr->zMatchinfo = 0; - pCsr->aMatchinfo = 0; + if( pCsr->pMIBuffer && strcmp(pCsr->pMIBuffer->zMatchinfo, zArg) ){ + sqlite3Fts3MIBufferFree(pCsr->pMIBuffer); + pCsr->pMIBuffer = 0; } - /* If Fts3Cursor.aMatchinfo[] is NULL, then this is the first time the + /* If Fts3Cursor.pMIBuffer is NULL, then this is the first time the ** matchinfo function has been called for this query. In this case ** allocate the array used to accumulate the matchinfo data and ** initialize those elements that are constant for every row. */ - if( pCsr->aMatchinfo==0 ){ + if( pCsr->pMIBuffer==0 ){ int nMatchinfo = 0; /* Number of u32 elements in match-info */ - int nArg; /* Bytes in zArg */ int i; /* Used to iterate through zArg */ /* Determine the number of phrases in the query */ @@ -140466,30 +161847,46 @@ static int fts3GetMatchinfo( /* Determine the number of integers in the buffer returned by this call. */ for(i=0; zArg[i]; i++){ + char *zErr = 0; + if( fts3MatchinfoCheck(pTab, zArg[i], &zErr) ){ + sqlite3_result_error(pCtx, zErr, -1); + sqlite3_free(zErr); + return; + } nMatchinfo += fts3MatchinfoSize(&sInfo, zArg[i]); } /* Allocate space for Fts3Cursor.aMatchinfo[] and Fts3Cursor.zMatchinfo. */ - nArg = (int)strlen(zArg); - pCsr->aMatchinfo = (u32 *)sqlite3_malloc(sizeof(u32)*nMatchinfo + nArg + 1); - if( !pCsr->aMatchinfo ) return SQLITE_NOMEM; + pCsr->pMIBuffer = fts3MIBufferNew(nMatchinfo, zArg); + if( !pCsr->pMIBuffer ) rc = SQLITE_NOMEM; - pCsr->zMatchinfo = (char *)&pCsr->aMatchinfo[nMatchinfo]; - pCsr->nMatchinfo = nMatchinfo; - memcpy(pCsr->zMatchinfo, zArg, nArg+1); - memset(pCsr->aMatchinfo, 0, sizeof(u32)*nMatchinfo); pCsr->isMatchinfoNeeded = 1; bGlobal = 1; } - sInfo.aMatchinfo = pCsr->aMatchinfo; - sInfo.nPhrase = pCsr->nPhrase; - if( pCsr->isMatchinfoNeeded ){ - rc = fts3MatchinfoValues(pCsr, bGlobal, &sInfo, zArg); - pCsr->isMatchinfoNeeded = 0; + if( rc==SQLITE_OK ){ + xDestroyOut = fts3MIBufferAlloc(pCsr->pMIBuffer, &aOut); + if( xDestroyOut==0 ){ + rc = SQLITE_NOMEM; + } } - return rc; + if( rc==SQLITE_OK ){ + sInfo.aMatchinfo = aOut; + sInfo.nPhrase = pCsr->nPhrase; + rc = fts3MatchinfoValues(pCsr, bGlobal, &sInfo, zArg); + if( bGlobal ){ + fts3MIBufferSetGlobal(pCsr->pMIBuffer); + } + } + + if( rc!=SQLITE_OK ){ + sqlite3_result_error_code(pCtx, rc); + if( xDestroyOut ) xDestroyOut(aOut); + }else{ + int n = pCsr->pMIBuffer->nElem * sizeof(u32); + sqlite3_result_blob(pCtx, aOut, n, xDestroyOut); + } } /* @@ -140551,10 +161948,7 @@ SQLITE_PRIVATE void sqlite3Fts3Snippet( */ for(iRead=0; iReadnColumn; iRead++){ SnippetFragment sF = {0, 0, 0, 0}; - int iS; -#if defined(__minix) - iS = 0; /* LSC: Fix -Os compilation: -Werror=maybe-uninitialized */ -#endif /* defined(__minix) */ + int iS = 0; if( iCol>=0 && iRead!=iCol ) continue; /* Find the best snippet of nFToken tokens in column iRead. */ @@ -140698,7 +162092,7 @@ SQLITE_PRIVATE void sqlite3Fts3Offsets( */ sCtx.iCol = iCol; sCtx.iTerm = 0; - (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void *)&sCtx); + (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx); /* Retreive the text stored in column iCol. If an SQL NULL is stored ** in column iCol, jump immediately to the next iteration of the loop. @@ -140790,19 +162184,9 @@ SQLITE_PRIVATE void sqlite3Fts3Matchinfo( const char *zArg /* Second arg to matchinfo() function */ ){ Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc; - int i; const char *zFormat; if( zArg ){ - for(i=0; zArg[i]; i++){ - char *zErr = 0; - if( fts3MatchinfoCheck(pTab, zArg[i], &zErr) ){ - sqlite3_result_error(pContext, zErr, -1); - sqlite3_free(zErr); - return; - } - } zFormat = zArg; }else{ zFormat = FTS3_MATCHINFO_DEFAULT; @@ -140811,17 +162195,10 @@ SQLITE_PRIVATE void sqlite3Fts3Matchinfo( if( !pCsr->pExpr ){ sqlite3_result_blob(pContext, "", 0, SQLITE_STATIC); return; - } - - /* Retrieve matchinfo() data. */ - rc = fts3GetMatchinfo(pCsr, zFormat); - sqlite3Fts3SegmentsClose(pTab); - - if( rc!=SQLITE_OK ){ - sqlite3_result_error_code(pContext, rc); }else{ - int n = pCsr->nMatchinfo * sizeof(u32); - sqlite3_result_blob(pContext, pCsr->aMatchinfo, n, SQLITE_TRANSIENT); + /* Retrieve matchinfo() data. */ + fts3GetMatchinfo(pContext, pCsr, zFormat); + sqlite3Fts3SegmentsClose(pTab); } } @@ -140844,8 +162221,9 @@ SQLITE_PRIVATE void sqlite3Fts3Matchinfo( ** Implementation of the "unicode" full-text-search tokenizer. */ -#ifdef SQLITE_ENABLE_FTS4_UNICODE61 +#ifndef SQLITE_DISABLE_FTS3_UNICODE +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) /* #include */ @@ -140853,6 +162231,7 @@ SQLITE_PRIVATE void sqlite3Fts3Matchinfo( /* #include */ /* #include */ +/* #include "fts3_tokenizer.h" */ /* ** The following two macros - READ_UTF8 and WRITE_UTF8 - have been copied @@ -141060,7 +162439,7 @@ static int unicodeCreate( for(i=0; rc==SQLITE_OK && ibRemoveDiacritic = 1; @@ -141147,7 +162526,7 @@ static int unicodeNext( ){ unicode_cursor *pCsr = (unicode_cursor *)pC; unicode_tokenizer *p = ((unicode_tokenizer *)pCsr->base.pTokenizer); - int iCode; + int iCode = 0; char *zOut; const unsigned char *z = &pCsr->aInput[pCsr->iOff]; const unsigned char *zStart = z; @@ -141192,11 +162571,11 @@ static int unicodeNext( ); /* Set the output variables and return. */ - pCsr->iOff = (z - pCsr->aInput); + pCsr->iOff = (int)(z - pCsr->aInput); *paToken = pCsr->zToken; - *pnToken = zOut - pCsr->zToken; - *piStart = (zStart - pCsr->aInput); - *piEnd = (zEnd - pCsr->aInput); + *pnToken = (int)(zOut - pCsr->zToken); + *piStart = (int)(zStart - pCsr->aInput); + *piEnd = (int)(zEnd - pCsr->aInput); *piPos = pCsr->iToken++; return SQLITE_OK; } @@ -141219,7 +162598,7 @@ SQLITE_PRIVATE void sqlite3Fts3UnicodeTokenizer(sqlite3_tokenizer_module const * } #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ -#endif /* ifndef SQLITE_ENABLE_FTS4_UNICODE61 */ +#endif /* ifndef SQLITE_DISABLE_FTS3_UNICODE */ /************** End of fts3_unicode.c ****************************************/ /************** Begin file fts3_unicode2.c ***********************************/ @@ -141240,7 +162619,7 @@ SQLITE_PRIVATE void sqlite3Fts3UnicodeTokenizer(sqlite3_tokenizer_module const * ** DO NOT EDIT THIS MACHINE GENERATED FILE. */ -#if defined(SQLITE_ENABLE_FTS4_UNICODE61) +#ifndef SQLITE_DISABLE_FTS3_UNICODE #if defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) /* #include */ @@ -141264,7 +162643,7 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int c){ ** C. It is not possible to represent a range larger than 1023 codepoints ** using this format. */ - const static unsigned int aEntry[] = { + static const unsigned int aEntry[] = { 0x00000030, 0x0000E807, 0x00016C06, 0x0001EC2F, 0x0002AC07, 0x0002D001, 0x0002D803, 0x0002EC01, 0x0002FC01, 0x00035C01, 0x0003DC01, 0x000B0804, 0x000B480E, 0x000B9407, 0x000BB401, @@ -141356,7 +162735,7 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsalnum(int c){ return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 ); }else if( c<(1<<22) ){ unsigned int key = (((unsigned int)c)<<10) | 0x000003FF; - int iRes; + int iRes = 0; int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1; int iLo = 0; while( iHi>=iLo ){ @@ -141427,7 +162806,7 @@ static int remove_diacritic(int c){ } assert( key>=aDia[iRes] ); return ((c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : (int)aChar[iRes]); -}; +} /* @@ -141587,7 +162966,7 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ return ret; } #endif /* defined(SQLITE_ENABLE_FTS3) || defined(SQLITE_ENABLE_FTS4) */ -#endif /* !defined(SQLITE_ENABLE_FTS4_UNICODE61) */ +#endif /* !defined(SQLITE_DISABLE_FTS3_UNICODE) */ /************** End of fts3_unicode2.c ***************************************/ /************** Begin file rtree.c *******************************************/ @@ -141647,60 +163026,23 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeFold(int c, int bRemoveDiacritic){ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_RTREE) -/* -** This file contains an implementation of a couple of different variants -** of the r-tree algorithm. See the README file for further details. The -** same data-structure is used for all, but the algorithms for insert and -** delete operations vary. The variants used are selected at compile time -** by defining the following symbols: -*/ - -/* Either, both or none of the following may be set to activate -** r*tree variant algorithms. -*/ -#define VARIANT_RSTARTREE_CHOOSESUBTREE 0 -#define VARIANT_RSTARTREE_REINSERT 1 - -/* -** Exactly one of the following must be set to 1. -*/ -#define VARIANT_GUTTMAN_QUADRATIC_SPLIT 0 -#define VARIANT_GUTTMAN_LINEAR_SPLIT 0 -#define VARIANT_RSTARTREE_SPLIT 1 - -#define VARIANT_GUTTMAN_SPLIT \ - (VARIANT_GUTTMAN_LINEAR_SPLIT||VARIANT_GUTTMAN_QUADRATIC_SPLIT) - -#if VARIANT_GUTTMAN_QUADRATIC_SPLIT - #define PickNext QuadraticPickNext - #define PickSeeds QuadraticPickSeeds - #define AssignCells splitNodeGuttman -#endif -#if VARIANT_GUTTMAN_LINEAR_SPLIT - #define PickNext LinearPickNext - #define PickSeeds LinearPickSeeds - #define AssignCells splitNodeGuttman -#endif -#if VARIANT_RSTARTREE_SPLIT - #define AssignCells splitNodeStartree -#endif - -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif - #ifndef SQLITE_CORE +/* #include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT1 #else +/* #include "sqlite3.h" */ #endif /* #include */ /* #include */ +/* #include */ #ifndef SQLITE_AMALGAMATION #include "sqlite3rtree.h" typedef sqlite3_int64 i64; +typedef sqlite3_uint64 u64; typedef unsigned char u8; +typedef unsigned short u16; typedef unsigned int u32; #endif @@ -141718,6 +163060,7 @@ typedef struct RtreeConstraint RtreeConstraint; typedef struct RtreeMatchArg RtreeMatchArg; typedef struct RtreeGeomCallback RtreeGeomCallback; typedef union RtreeCoord RtreeCoord; +typedef struct RtreeSearchPoint RtreeSearchPoint; /* The rtree may have between 1 and RTREE_MAX_DIMENSIONS dimensions. */ #define RTREE_MAX_DIMENSIONS 5 @@ -141726,7 +163069,7 @@ typedef union RtreeCoord RtreeCoord; ** ever contain very many entries, so a fixed number of buckets is ** used. */ -#define HASHSIZE 128 +#define HASHSIZE 97 /* The xBestIndex method of this virtual table requires an estimate of ** the number of rows in the virtual table to calculate the costs of @@ -141742,17 +163085,20 @@ typedef union RtreeCoord RtreeCoord; ** An rtree virtual-table object. */ struct Rtree { - sqlite3_vtab base; + sqlite3_vtab base; /* Base class. Must be first */ sqlite3 *db; /* Host database connection */ int iNodeSize; /* Size in bytes of each node in the node table */ - int nDim; /* Number of dimensions */ - int nBytesPerCell; /* Bytes consumed per cell */ + u8 nDim; /* Number of dimensions */ + u8 nDim2; /* Twice the number of dimensions */ + u8 eCoordType; /* RTREE_COORD_REAL32 or RTREE_COORD_INT32 */ + u8 nBytesPerCell; /* Bytes consumed per cell */ + u8 inWrTrans; /* True if inside write transaction */ int iDepth; /* Current depth of the r-tree structure */ char *zDb; /* Name of database containing r-tree table */ char *zName; /* Name of r-tree table */ - RtreeNode *aHash[HASHSIZE]; /* Hash table of in-memory nodes. */ - int nBusy; /* Current number of users of this structure */ + u32 nBusy; /* Current number of users of this structure */ i64 nRowEst; /* Estimated number of rows in this table */ + u32 nCursor; /* Number of open cursors */ /* List of nodes removed during a CondenseTree operation. List is ** linked together via the pointer normally used for hash chains - @@ -141762,8 +163108,10 @@ struct Rtree { RtreeNode *pDeleted; int iReinsertHeight; /* Height of sub-trees Reinsert() has run on */ + /* Blob I/O on xxx_node */ + sqlite3_blob *pNodeBlob; + /* Statements to read/write/delete a record from xxx_node */ - sqlite3_stmt *pReadNode; sqlite3_stmt *pWriteNode; sqlite3_stmt *pDeleteNode; @@ -141777,10 +163125,10 @@ struct Rtree { sqlite3_stmt *pWriteParent; sqlite3_stmt *pDeleteParent; - int eCoordType; + RtreeNode *aHash[HASHSIZE]; /* Hash table of in-memory nodes. */ }; -/* Possible values for eCoordType: */ +/* Possible values for Rtree.eCoordType: */ #define RTREE_COORD_REAL32 0 #define RTREE_COORD_INT32 1 @@ -141792,11 +163140,30 @@ struct Rtree { #ifdef SQLITE_RTREE_INT_ONLY typedef sqlite3_int64 RtreeDValue; /* High accuracy coordinate */ typedef int RtreeValue; /* Low accuracy coordinate */ +# define RTREE_ZERO 0 #else typedef double RtreeDValue; /* High accuracy coordinate */ typedef float RtreeValue; /* Low accuracy coordinate */ +# define RTREE_ZERO 0.0 #endif +/* +** When doing a search of an r-tree, instances of the following structure +** record intermediate results from the tree walk. +** +** The id is always a node-id. For iLevel>=1 the id is the node-id of +** the node that the RtreeSearchPoint represents. When iLevel==0, however, +** the id is of the parent node and the cell that RtreeSearchPoint +** represents is the iCell-th entry in the parent node. +*/ +struct RtreeSearchPoint { + RtreeDValue rScore; /* The score for this node. Smallest goes first. */ + sqlite3_int64 id; /* Node ID */ + u8 iLevel; /* 0=entries. 1=leaf node. 2+ for higher */ + u8 eWithin; /* PARTLY_WITHIN or FULLY_WITHIN */ + u8 iCell; /* Cell index within the node */ +}; + /* ** The minimum number of cells allowed for a node is a third of the ** maximum. In Gutman's notation: @@ -141819,21 +163186,44 @@ struct Rtree { */ #define RTREE_MAX_DEPTH 40 + +/* +** Number of entries in the cursor RtreeNode cache. The first entry is +** used to cache the RtreeNode for RtreeCursor.sPoint. The remaining +** entries cache the RtreeNode for the first elements of the priority queue. +*/ +#define RTREE_CACHE_SZ 5 + /* ** An rtree cursor object. */ struct RtreeCursor { - sqlite3_vtab_cursor base; - RtreeNode *pNode; /* Node cursor is currently pointing at */ - int iCell; /* Index of current cell in pNode */ + sqlite3_vtab_cursor base; /* Base class. Must be first */ + u8 atEOF; /* True if at end of search */ + u8 bPoint; /* True if sPoint is valid */ int iStrategy; /* Copy of idxNum search parameter */ int nConstraint; /* Number of entries in aConstraint */ RtreeConstraint *aConstraint; /* Search constraints. */ + int nPointAlloc; /* Number of slots allocated for aPoint[] */ + int nPoint; /* Number of slots used in aPoint[] */ + int mxLevel; /* iLevel value for root of the tree */ + RtreeSearchPoint *aPoint; /* Priority queue for search points */ + RtreeSearchPoint sPoint; /* Cached next search point */ + RtreeNode *aNode[RTREE_CACHE_SZ]; /* Rtree node cache */ + u32 anQueue[RTREE_MAX_DEPTH+1]; /* Number of queued entries by iLevel */ }; +/* Return the Rtree of a RtreeCursor */ +#define RTREE_OF_CURSOR(X) ((Rtree*)((X)->base.pVtab)) + +/* +** A coordinate can be either a floating point number or a integer. All +** coordinates within a single R-Tree are always of the same time. +*/ union RtreeCoord { - RtreeValue f; - int i; + RtreeValue f; /* Floating point value */ + int i; /* Integer value */ + u32 u; /* Unsigned for byte-order conversions */ }; /* @@ -141858,38 +163248,67 @@ union RtreeCoord { struct RtreeConstraint { int iCoord; /* Index of constrained coordinate */ int op; /* Constraining operation */ - RtreeDValue rValue; /* Constraint value. */ - int (*xGeom)(sqlite3_rtree_geometry*, int, RtreeDValue*, int*); - sqlite3_rtree_geometry *pGeom; /* Constraint callback argument for a MATCH */ + union { + RtreeDValue rValue; /* Constraint value. */ + int (*xGeom)(sqlite3_rtree_geometry*,int,RtreeDValue*,int*); + int (*xQueryFunc)(sqlite3_rtree_query_info*); + } u; + sqlite3_rtree_query_info *pInfo; /* xGeom and xQueryFunc argument */ }; /* Possible values for RtreeConstraint.op */ -#define RTREE_EQ 0x41 -#define RTREE_LE 0x42 -#define RTREE_LT 0x43 -#define RTREE_GE 0x44 -#define RTREE_GT 0x45 -#define RTREE_MATCH 0x46 +#define RTREE_EQ 0x41 /* A */ +#define RTREE_LE 0x42 /* B */ +#define RTREE_LT 0x43 /* C */ +#define RTREE_GE 0x44 /* D */ +#define RTREE_GT 0x45 /* E */ +#define RTREE_MATCH 0x46 /* F: Old-style sqlite3_rtree_geometry_callback() */ +#define RTREE_QUERY 0x47 /* G: New-style sqlite3_rtree_query_callback() */ + /* ** An rtree structure node. */ struct RtreeNode { - RtreeNode *pParent; /* Parent node */ - i64 iNode; - int nRef; - int isDirty; - u8 *zData; - RtreeNode *pNext; /* Next node in this hash chain */ + RtreeNode *pParent; /* Parent node */ + i64 iNode; /* The node number */ + int nRef; /* Number of references to this node */ + int isDirty; /* True if the node needs to be written to disk */ + u8 *zData; /* Content of the node, as should be on disk */ + RtreeNode *pNext; /* Next node in this hash collision chain */ }; + +/* Return the number of cells in a node */ #define NCELL(pNode) readInt16(&(pNode)->zData[2]) /* -** Structure to store a deserialized rtree record. +** A single cell from a node, deserialized */ struct RtreeCell { - i64 iRowid; - RtreeCoord aCoord[RTREE_MAX_DIMENSIONS*2]; + i64 iRowid; /* Node or entry ID */ + RtreeCoord aCoord[RTREE_MAX_DIMENSIONS*2]; /* Bounding box coordinates */ +}; + + +/* +** This object becomes the sqlite3_user_data() for the SQL functions +** that are created by sqlite3_rtree_geometry_callback() and +** sqlite3_rtree_query_callback() and which appear on the right of MATCH +** operators in order to constrain a search. +** +** xGeom and xQueryFunc are the callback functions. Exactly one of +** xGeom and xQueryFunc fields is non-NULL, depending on whether the +** SQL function was created using sqlite3_rtree_geometry_callback() or +** sqlite3_rtree_query_callback(). +** +** This object is deleted automatically by the destructor mechanism in +** sqlite3_create_function_v2(). +*/ +struct RtreeGeomCallback { + int (*xGeom)(sqlite3_rtree_geometry*, int, RtreeDValue*, int*); + int (*xQueryFunc)(sqlite3_rtree_query_info*); + void (*xDestructor)(void*); + void *pContext; }; @@ -141901,29 +163320,17 @@ struct RtreeCell { #define RTREE_GEOMETRY_MAGIC 0x891245AB /* -** An instance of this structure must be supplied as a blob argument to -** the right-hand-side of an SQL MATCH operator used to constrain an -** r-tree query. +** An instance of this structure (in the form of a BLOB) is returned by +** the SQL functions that sqlite3_rtree_geometry_callback() and +** sqlite3_rtree_query_callback() create, and is read as the right-hand +** operand to the MATCH operator of an R-Tree. */ struct RtreeMatchArg { - u32 magic; /* Always RTREE_GEOMETRY_MAGIC */ - int (*xGeom)(sqlite3_rtree_geometry *, int, RtreeDValue*, int *); - void *pContext; - int nParam; - RtreeDValue aParam[1]; -}; - -/* -** When a geometry callback is created (see sqlite3_rtree_geometry_callback), -** a single instance of the following structure is allocated. It is used -** as the context for the user-function created by by s_r_g_c(). The object -** is eventually deleted by the destructor mechanism provided by -** sqlite3_create_function_v2() (which is called by s_r_g_c() to create -** the geometry callback function). -*/ -struct RtreeGeomCallback { - int (*xGeom)(sqlite3_rtree_geometry*, int, RtreeDValue*, int*); - void *pContext; + u32 magic; /* Always RTREE_GEOMETRY_MAGIC */ + RtreeGeomCallback cb; /* Info about the callback functions */ + int nParam; /* Number of parameters to the SQL function */ + sqlite3_value **apSqlParam; /* Original SQL parameter values */ + RtreeDValue aParam[1]; /* Values for parameters to the SQL function */ }; #ifndef MAX @@ -141933,6 +163340,64 @@ struct RtreeGeomCallback { # define MIN(x,y) ((x) > (y) ? (y) : (x)) #endif +/* What version of GCC is being used. 0 means GCC is not being used */ +#ifndef GCC_VERSION +#if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC) +# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__) +#else +# define GCC_VERSION 0 +#endif +#endif + +/* What version of CLANG is being used. 0 means CLANG is not being used */ +#ifndef CLANG_VERSION +#if defined(__clang__) && !defined(_WIN32) && !defined(SQLITE_DISABLE_INTRINSIC) +# define CLANG_VERSION \ + (__clang_major__*1000000+__clang_minor__*1000+__clang_patchlevel__) +#else +# define CLANG_VERSION 0 +#endif +#endif + +/* The testcase() macro should already be defined in the amalgamation. If +** it is not, make it a no-op. +*/ +#ifndef SQLITE_AMALGAMATION +# define testcase(X) +#endif + +/* +** Macros to determine whether the machine is big or little endian, +** and whether or not that determination is run-time or compile-time. +** +** For best performance, an attempt is made to guess at the byte-order +** using C-preprocessor macros. If that is unsuccessful, or if +** -DSQLITE_RUNTIME_BYTEORDER=1 is set, then byte-order is determined +** at run-time. +*/ +#ifndef SQLITE_BYTEORDER +#if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ + defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ + defined(__arm__) +# define SQLITE_BYTEORDER 1234 +#elif defined(sparc) || defined(__ppc__) +# define SQLITE_BYTEORDER 4321 +#else +# define SQLITE_BYTEORDER 0 /* 0 means "unknown at compile-time" */ +#endif +#endif + + +/* What version of MSVC is being used. 0 means MSVC is not being used */ +#ifndef MSVC_VERSION +#if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC) +# define MSVC_VERSION _MSC_VER +#else +# define MSVC_VERSION 0 +#endif +#endif + /* ** Functions to deserialize a 16 bit integer, 32 bit real number and ** 64 bit integer. The deserialized value is returned. @@ -141941,15 +163406,36 @@ static int readInt16(u8 *p){ return (p[0]<<8) + p[1]; } static void readCoord(u8 *p, RtreeCoord *pCoord){ - u32 i = ( + assert( ((((char*)p) - (char*)0)&3)==0 ); /* p is always 4-byte aligned */ +#if SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + pCoord->u = _byteswap_ulong(*(u32*)p); +#elif SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + pCoord->u = __builtin_bswap32(*(u32*)p); +#elif SQLITE_BYTEORDER==4321 + pCoord->u = *(u32*)p; +#else + pCoord->u = ( (((u32)p[0]) << 24) + (((u32)p[1]) << 16) + (((u32)p[2]) << 8) + (((u32)p[3]) << 0) ); - *(u32 *)pCoord = i; +#endif } static i64 readInt64(u8 *p){ +#if SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + u64 x; + memcpy(&x, p, 8); + return (i64)_byteswap_uint64(x); +#elif SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + u64 x; + memcpy(&x, p, 8); + return (i64)__builtin_bswap64(x); +#elif SQLITE_BYTEORDER==4321 + i64 x; + memcpy(&x, p, 8); + return x; +#else return ( (((i64)p[0]) << 56) + (((i64)p[1]) << 48) + @@ -141960,6 +163446,7 @@ static i64 readInt64(u8 *p){ (((i64)p[6]) << 8) + (((i64)p[7]) << 0) ); +#endif } /* @@ -141967,23 +163454,43 @@ static i64 readInt64(u8 *p){ ** 64 bit integer. The value returned is the number of bytes written ** to the argument buffer (always 2, 4 and 8 respectively). */ -static int writeInt16(u8 *p, int i){ +static void writeInt16(u8 *p, int i){ p[0] = (i>> 8)&0xFF; p[1] = (i>> 0)&0xFF; - return 2; } static int writeCoord(u8 *p, RtreeCoord *pCoord){ u32 i; + assert( ((((char*)p) - (char*)0)&3)==0 ); /* p is always 4-byte aligned */ assert( sizeof(RtreeCoord)==4 ); assert( sizeof(u32)==4 ); - i = *(u32 *)pCoord; +#if SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + i = __builtin_bswap32(pCoord->u); + memcpy(p, &i, 4); +#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + i = _byteswap_ulong(pCoord->u); + memcpy(p, &i, 4); +#elif SQLITE_BYTEORDER==4321 + i = pCoord->u; + memcpy(p, &i, 4); +#else + i = pCoord->u; p[0] = (i>>24)&0xFF; p[1] = (i>>16)&0xFF; p[2] = (i>> 8)&0xFF; p[3] = (i>> 0)&0xFF; +#endif return 4; } static int writeInt64(u8 *p, i64 i){ +#if SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) + i = (i64)__builtin_bswap64((u64)i); + memcpy(p, &i, 8); +#elif SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 + i = (i64)_byteswap_uint64((u64)i); + memcpy(p, &i, 8); +#elif SQLITE_BYTEORDER==4321 + memcpy(p, &i, 8); +#else p[0] = (i>>56)&0xFF; p[1] = (i>>48)&0xFF; p[2] = (i>>40)&0xFF; @@ -141992,6 +163499,7 @@ static int writeInt64(u8 *p, i64 i){ p[5] = (i>>16)&0xFF; p[6] = (i>> 8)&0xFF; p[7] = (i>> 0)&0xFF; +#endif return 8; } @@ -142017,10 +163525,7 @@ static void nodeZero(Rtree *pRtree, RtreeNode *p){ ** in the Rtree.aHash table. */ static int nodeHash(i64 iNode){ - return ( - (iNode>>56) ^ (iNode>>48) ^ (iNode>>40) ^ (iNode>>32) ^ - (iNode>>24) ^ (iNode>>16) ^ (iNode>> 8) ^ (iNode>> 0) - ) % HASHSIZE; + return iNode % HASHSIZE; } /* @@ -142077,19 +163582,28 @@ static RtreeNode *nodeNew(Rtree *pRtree, RtreeNode *pParent){ return pNode; } +/* +** Clear the Rtree.pNodeBlob object +*/ +static void nodeBlobReset(Rtree *pRtree){ + if( pRtree->pNodeBlob && pRtree->inWrTrans==0 && pRtree->nCursor==0 ){ + sqlite3_blob *pBlob = pRtree->pNodeBlob; + pRtree->pNodeBlob = 0; + sqlite3_blob_close(pBlob); + } +} + /* ** Obtain a reference to an r-tree node. */ -static int -nodeAcquire( +static int nodeAcquire( Rtree *pRtree, /* R-tree structure */ i64 iNode, /* Node number to load */ RtreeNode *pParent, /* Either the parent node or NULL */ RtreeNode **ppNode /* OUT: Acquired node */ ){ - int rc; - int rc2 = SQLITE_OK; - RtreeNode *pNode; + int rc = SQLITE_OK; + RtreeNode *pNode = 0; /* Check if the requested node is already in the hash table. If so, ** increase its reference count and return it. @@ -142105,28 +163619,45 @@ nodeAcquire( return SQLITE_OK; } - sqlite3_bind_int64(pRtree->pReadNode, 1, iNode); - rc = sqlite3_step(pRtree->pReadNode); - if( rc==SQLITE_ROW ){ - const u8 *zBlob = sqlite3_column_blob(pRtree->pReadNode, 0); - if( pRtree->iNodeSize==sqlite3_column_bytes(pRtree->pReadNode, 0) ){ - pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode)+pRtree->iNodeSize); - if( !pNode ){ - rc2 = SQLITE_NOMEM; - }else{ - pNode->pParent = pParent; - pNode->zData = (u8 *)&pNode[1]; - pNode->nRef = 1; - pNode->iNode = iNode; - pNode->isDirty = 0; - pNode->pNext = 0; - memcpy(pNode->zData, zBlob, pRtree->iNodeSize); - nodeReference(pParent); - } + if( pRtree->pNodeBlob ){ + sqlite3_blob *pBlob = pRtree->pNodeBlob; + pRtree->pNodeBlob = 0; + rc = sqlite3_blob_reopen(pBlob, iNode); + pRtree->pNodeBlob = pBlob; + if( rc ){ + nodeBlobReset(pRtree); + if( rc==SQLITE_NOMEM ) return SQLITE_NOMEM; + } + } + if( pRtree->pNodeBlob==0 ){ + char *zTab = sqlite3_mprintf("%s_node", pRtree->zName); + if( zTab==0 ) return SQLITE_NOMEM; + rc = sqlite3_blob_open(pRtree->db, pRtree->zDb, zTab, "data", iNode, 0, + &pRtree->pNodeBlob); + sqlite3_free(zTab); + } + if( rc ){ + nodeBlobReset(pRtree); + *ppNode = 0; + /* If unable to open an sqlite3_blob on the desired row, that can only + ** be because the shadow tables hold erroneous data. */ + if( rc==SQLITE_ERROR ) rc = SQLITE_CORRUPT_VTAB; + }else if( pRtree->iNodeSize==sqlite3_blob_bytes(pRtree->pNodeBlob) ){ + pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode)+pRtree->iNodeSize); + if( !pNode ){ + rc = SQLITE_NOMEM; + }else{ + pNode->pParent = pParent; + pNode->zData = (u8 *)&pNode[1]; + pNode->nRef = 1; + pNode->iNode = iNode; + pNode->isDirty = 0; + pNode->pNext = 0; + rc = sqlite3_blob_read(pRtree->pNodeBlob, pNode->zData, + pRtree->iNodeSize, 0); + nodeReference(pParent); } } - rc = sqlite3_reset(pRtree->pReadNode); - if( rc==SQLITE_OK ) rc = rc2; /* If the root node was just loaded, set pRtree->iDepth to the height ** of the r-tree structure. A height of zero means all data is stored on @@ -142170,22 +163701,22 @@ nodeAcquire( ** Overwrite cell iCell of node pNode with the contents of pCell. */ static void nodeOverwriteCell( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell, - int iCell + Rtree *pRtree, /* The overall R-Tree */ + RtreeNode *pNode, /* The node into which the cell is to be written */ + RtreeCell *pCell, /* The cell to write */ + int iCell /* Index into pNode into which pCell is written */ ){ int ii; u8 *p = &pNode->zData[4 + pRtree->nBytesPerCell*iCell]; p += writeInt64(p, pCell->iRowid); - for(ii=0; ii<(pRtree->nDim*2); ii++){ + for(ii=0; iinDim2; ii++){ p += writeCoord(p, &pCell->aCoord[ii]); } pNode->isDirty = 1; } /* -** Remove cell the cell with index iCell from node pNode. +** Remove the cell with index iCell from node pNode. */ static void nodeDeleteCell(Rtree *pRtree, RtreeNode *pNode, int iCell){ u8 *pDst = &pNode->zData[4 + pRtree->nBytesPerCell*iCell]; @@ -142202,11 +163733,10 @@ static void nodeDeleteCell(Rtree *pRtree, RtreeNode *pNode, int iCell){ ** ** If there is not enough free space in pNode, return SQLITE_FULL. */ -static int -nodeInsertCell( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell +static int nodeInsertCell( + Rtree *pRtree, /* The overall R-Tree */ + RtreeNode *pNode, /* Write new cell into this node */ + RtreeCell *pCell /* The cell to be inserted */ ){ int nCell; /* Current number of cells in pNode */ int nMaxCell; /* Maximum number of cells for pNode */ @@ -142227,8 +163757,7 @@ nodeInsertCell( /* ** If the node is dirty, write it out to the database. */ -static int -nodeWrite(Rtree *pRtree, RtreeNode *pNode){ +static int nodeWrite(Rtree *pRtree, RtreeNode *pNode){ int rc = SQLITE_OK; if( pNode->isDirty ){ sqlite3_stmt *p = pRtree->pWriteNode; @@ -142253,8 +163782,7 @@ nodeWrite(Rtree *pRtree, RtreeNode *pNode){ ** Release a reference to a node. If the node is dirty and the reference ** count drops to zero, the node data is written to the database. */ -static int -nodeRelease(Rtree *pRtree, RtreeNode *pNode){ +static int nodeRelease(Rtree *pRtree, RtreeNode *pNode){ int rc = SQLITE_OK; if( pNode ){ assert( pNode->nRef>0 ); @@ -142282,9 +163810,9 @@ nodeRelease(Rtree *pRtree, RtreeNode *pNode){ ** an internal node, then the 64-bit integer is a child page number. */ static i64 nodeGetRowid( - Rtree *pRtree, - RtreeNode *pNode, - int iCell + Rtree *pRtree, /* The overall R-Tree */ + RtreeNode *pNode, /* The node from which to extract the ID */ + int iCell /* The cell index from which to extract the ID */ ){ assert( iCellzData[4 + pRtree->nBytesPerCell*iCell]); @@ -142294,11 +163822,11 @@ static i64 nodeGetRowid( ** Return coordinate iCoord from cell iCell in node pNode. */ static void nodeGetCoord( - Rtree *pRtree, - RtreeNode *pNode, - int iCell, - int iCoord, - RtreeCoord *pCoord /* Space to write result to */ + Rtree *pRtree, /* The overall R-Tree */ + RtreeNode *pNode, /* The node from which to extract a coordinate */ + int iCell, /* The index of the cell within the node */ + int iCoord, /* Which coordinate to extract */ + RtreeCoord *pCoord /* OUT: Space to write result to */ ){ readCoord(&pNode->zData[12 + pRtree->nBytesPerCell*iCell + 4*iCoord], pCoord); } @@ -142308,16 +163836,23 @@ static void nodeGetCoord( ** to by pCell with the results. */ static void nodeGetCell( - Rtree *pRtree, - RtreeNode *pNode, - int iCell, - RtreeCell *pCell + Rtree *pRtree, /* The overall R-Tree */ + RtreeNode *pNode, /* The node containing the cell to be read */ + int iCell, /* Index of the cell within the node */ + RtreeCell *pCell /* OUT: Write the cell contents here */ ){ - int ii; + u8 *pData; + RtreeCoord *pCoord; + int ii = 0; pCell->iRowid = nodeGetRowid(pRtree, pNode, iCell); - for(ii=0; iinDim*2; ii++){ - nodeGetCoord(pRtree, pNode, iCell, ii, &pCell->aCoord[ii]); - } + pData = pNode->zData + (12 + pRtree->nBytesPerCell*iCell); + pCoord = pCell->aCoord; + do{ + readCoord(pData, &pCoord[ii]); + readCoord(pData+4, &pCoord[ii+1]); + pData += 8; + ii += 2; + }while( iinDim2 ); } @@ -142368,7 +163903,9 @@ static void rtreeReference(Rtree *pRtree){ static void rtreeRelease(Rtree *pRtree){ pRtree->nBusy--; if( pRtree->nBusy==0 ){ - sqlite3_finalize(pRtree->pReadNode); + pRtree->inWrTrans = 0; + pRtree->nCursor = 0; + nodeBlobReset(pRtree); sqlite3_finalize(pRtree->pWriteNode); sqlite3_finalize(pRtree->pDeleteNode); sqlite3_finalize(pRtree->pReadRowid); @@ -142406,6 +163943,7 @@ static int rtreeDestroy(sqlite3_vtab *pVtab){ if( !zCreate ){ rc = SQLITE_NOMEM; }else{ + nodeBlobReset(pRtree); rc = sqlite3_exec(pRtree->db, zCreate, 0, 0, 0); sqlite3_free(zCreate); } @@ -142421,6 +163959,7 @@ static int rtreeDestroy(sqlite3_vtab *pVtab){ */ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ int rc = SQLITE_NOMEM; + Rtree *pRtree = (Rtree *)pVTab; RtreeCursor *pCsr; pCsr = (RtreeCursor *)sqlite3_malloc(sizeof(RtreeCursor)); @@ -142428,6 +163967,7 @@ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ memset(pCsr, 0, sizeof(RtreeCursor)); pCsr->base.pVtab = pVTab; rc = SQLITE_OK; + pRtree->nCursor++; } *ppCursor = (sqlite3_vtab_cursor *)pCsr; @@ -142442,10 +163982,10 @@ static void freeCursorConstraints(RtreeCursor *pCsr){ if( pCsr->aConstraint ){ int i; /* Used to iterate through constraint array */ for(i=0; inConstraint; i++){ - sqlite3_rtree_geometry *pGeom = pCsr->aConstraint[i].pGeom; - if( pGeom ){ - if( pGeom->xDelUser ) pGeom->xDelUser(pGeom->pUser); - sqlite3_free(pGeom); + sqlite3_rtree_query_info *pInfo = pCsr->aConstraint[i].pInfo; + if( pInfo ){ + if( pInfo->xDelUser ) pInfo->xDelUser(pInfo->pUser); + sqlite3_free(pInfo); } } sqlite3_free(pCsr->aConstraint); @@ -142458,12 +163998,16 @@ static void freeCursorConstraints(RtreeCursor *pCsr){ */ static int rtreeClose(sqlite3_vtab_cursor *cur){ Rtree *pRtree = (Rtree *)(cur->pVtab); - int rc; + int ii; RtreeCursor *pCsr = (RtreeCursor *)cur; + assert( pRtree->nCursor>0 ); freeCursorConstraints(pCsr); - rc = nodeRelease(pRtree, pCsr->pNode); + sqlite3_free(pCsr->aPoint); + for(ii=0; iiaNode[ii]); sqlite3_free(pCsr); - return rc; + pRtree->nCursor--; + nodeBlobReset(pRtree); + return SQLITE_OK; } /* @@ -142474,196 +164018,203 @@ static int rtreeClose(sqlite3_vtab_cursor *cur){ */ static int rtreeEof(sqlite3_vtab_cursor *cur){ RtreeCursor *pCsr = (RtreeCursor *)cur; - return (pCsr->pNode==0); + return pCsr->atEOF; } /* -** The r-tree constraint passed as the second argument to this function is -** guaranteed to be a MATCH constraint. -*/ -static int testRtreeGeom( - Rtree *pRtree, /* R-Tree object */ - RtreeConstraint *pConstraint, /* MATCH constraint to test */ - RtreeCell *pCell, /* Cell to test */ - int *pbRes /* OUT: Test result */ -){ - int i; - RtreeDValue aCoord[RTREE_MAX_DIMENSIONS*2]; - int nCoord = pRtree->nDim*2; - - assert( pConstraint->op==RTREE_MATCH ); - assert( pConstraint->pGeom ); - - for(i=0; iaCoord[i]); - } - return pConstraint->xGeom(pConstraint->pGeom, nCoord, aCoord, pbRes); -} - -/* -** Cursor pCursor currently points to a cell in a non-leaf page. -** Set *pbEof to true if the sub-tree headed by the cell is filtered -** (excluded) by the constraints in the pCursor->aConstraint[] -** array, or false otherwise. +** Convert raw bits from the on-disk RTree record into a coordinate value. +** The on-disk format is big-endian and needs to be converted for little- +** endian platforms. The on-disk record stores integer coordinates if +** eInt is true and it stores 32-bit floating point records if eInt is +** false. a[] is the four bytes of the on-disk record to be decoded. +** Store the results in "r". ** -** Return SQLITE_OK if successful or an SQLite error code if an error -** occurs within a geometry callback. +** There are five versions of this macro. The last one is generic. The +** other four are various architectures-specific optimizations. */ -static int testRtreeCell(Rtree *pRtree, RtreeCursor *pCursor, int *pbEof){ - RtreeCell cell; - int ii; - int bRes = 0; - int rc = SQLITE_OK; - - nodeGetCell(pRtree, pCursor->pNode, pCursor->iCell, &cell); - for(ii=0; bRes==0 && iinConstraint; ii++){ - RtreeConstraint *p = &pCursor->aConstraint[ii]; - RtreeDValue cell_min = DCOORD(cell.aCoord[(p->iCoord>>1)*2]); - RtreeDValue cell_max = DCOORD(cell.aCoord[(p->iCoord>>1)*2+1]); - - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_MATCH - ); - - switch( p->op ){ - case RTREE_LE: case RTREE_LT: - bRes = p->rValuerValue>cell_max; - break; - - case RTREE_EQ: - bRes = (p->rValue>cell_max || p->rValueop==RTREE_MATCH ); - rc = testRtreeGeom(pRtree, p, &cell, &bRes); - bRes = !bRes; - break; - } - } - } - - *pbEof = bRes; - return rc; +#if SQLITE_BYTEORDER==1234 && MSVC_VERSION>=1300 +#define RTREE_DECODE_COORD(eInt, a, r) { \ + RtreeCoord c; /* Coordinate decoded */ \ + c.u = _byteswap_ulong(*(u32*)a); \ + r = eInt ? (sqlite3_rtree_dbl)c.i : (sqlite3_rtree_dbl)c.f; \ } - -/* -** Test if the cell that cursor pCursor currently points to -** would be filtered (excluded) by the constraints in the -** pCursor->aConstraint[] array. If so, set *pbEof to true before -** returning. If the cell is not filtered (excluded) by the constraints, -** set pbEof to zero. -** -** Return SQLITE_OK if successful or an SQLite error code if an error -** occurs within a geometry callback. -** -** This function assumes that the cell is part of a leaf node. -*/ -static int testRtreeEntry(Rtree *pRtree, RtreeCursor *pCursor, int *pbEof){ - RtreeCell cell; - int ii; - *pbEof = 0; - - nodeGetCell(pRtree, pCursor->pNode, pCursor->iCell, &cell); - for(ii=0; iinConstraint; ii++){ - RtreeConstraint *p = &pCursor->aConstraint[ii]; - RtreeDValue coord = DCOORD(cell.aCoord[p->iCoord]); - int res; - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_MATCH - ); - switch( p->op ){ - case RTREE_LE: res = (coord<=p->rValue); break; - case RTREE_LT: res = (coordrValue); break; - case RTREE_GE: res = (coord>=p->rValue); break; - case RTREE_GT: res = (coord>p->rValue); break; - case RTREE_EQ: res = (coord==p->rValue); break; - default: { - int rc; - assert( p->op==RTREE_MATCH ); - rc = testRtreeGeom(pRtree, p, &cell, &res); - if( rc!=SQLITE_OK ){ - return rc; - } - break; - } - } - - if( !res ){ - *pbEof = 1; - return SQLITE_OK; - } - } - - return SQLITE_OK; +#elif SQLITE_BYTEORDER==1234 && (GCC_VERSION>=4003000 || CLANG_VERSION>=3000000) +#define RTREE_DECODE_COORD(eInt, a, r) { \ + RtreeCoord c; /* Coordinate decoded */ \ + c.u = __builtin_bswap32(*(u32*)a); \ + r = eInt ? (sqlite3_rtree_dbl)c.i : (sqlite3_rtree_dbl)c.f; \ } +#elif SQLITE_BYTEORDER==1234 +#define RTREE_DECODE_COORD(eInt, a, r) { \ + RtreeCoord c; /* Coordinate decoded */ \ + memcpy(&c.u,a,4); \ + c.u = ((c.u>>24)&0xff)|((c.u>>8)&0xff00)| \ + ((c.u&0xff)<<24)|((c.u&0xff00)<<8); \ + r = eInt ? (sqlite3_rtree_dbl)c.i : (sqlite3_rtree_dbl)c.f; \ +} +#elif SQLITE_BYTEORDER==4321 +#define RTREE_DECODE_COORD(eInt, a, r) { \ + RtreeCoord c; /* Coordinate decoded */ \ + memcpy(&c.u,a,4); \ + r = eInt ? (sqlite3_rtree_dbl)c.i : (sqlite3_rtree_dbl)c.f; \ +} +#else +#define RTREE_DECODE_COORD(eInt, a, r) { \ + RtreeCoord c; /* Coordinate decoded */ \ + c.u = ((u32)a[0]<<24) + ((u32)a[1]<<16) \ + +((u32)a[2]<<8) + a[3]; \ + r = eInt ? (sqlite3_rtree_dbl)c.i : (sqlite3_rtree_dbl)c.f; \ +} +#endif /* -** Cursor pCursor currently points at a node that heads a sub-tree of -** height iHeight (if iHeight==0, then the node is a leaf). Descend -** to point to the left-most cell of the sub-tree that matches the -** configured constraints. +** Check the RTree node or entry given by pCellData and p against the MATCH +** constraint pConstraint. */ -static int descendToCell( - Rtree *pRtree, - RtreeCursor *pCursor, - int iHeight, - int *pEof /* OUT: Set to true if cannot descend */ +static int rtreeCallbackConstraint( + RtreeConstraint *pConstraint, /* The constraint to test */ + int eInt, /* True if RTree holding integer coordinates */ + u8 *pCellData, /* Raw cell content */ + RtreeSearchPoint *pSearch, /* Container of this cell */ + sqlite3_rtree_dbl *prScore, /* OUT: score for the cell */ + int *peWithin /* OUT: visibility of the cell */ ){ - int isEof; - int rc; - int ii; - RtreeNode *pChild; - sqlite3_int64 iRowid; + sqlite3_rtree_query_info *pInfo = pConstraint->pInfo; /* Callback info */ + int nCoord = pInfo->nCoord; /* No. of coordinates */ + int rc; /* Callback return code */ + RtreeCoord c; /* Translator union */ + sqlite3_rtree_dbl aCoord[RTREE_MAX_DIMENSIONS*2]; /* Decoded coordinates */ - RtreeNode *pSavedNode = pCursor->pNode; - int iSavedCell = pCursor->iCell; + assert( pConstraint->op==RTREE_MATCH || pConstraint->op==RTREE_QUERY ); + assert( nCoord==2 || nCoord==4 || nCoord==6 || nCoord==8 || nCoord==10 ); - assert( iHeight>=0 ); - - if( iHeight==0 ){ - rc = testRtreeEntry(pRtree, pCursor, &isEof); + if( pConstraint->op==RTREE_QUERY && pSearch->iLevel==1 ){ + pInfo->iRowid = readInt64(pCellData); + } + pCellData += 8; +#ifndef SQLITE_RTREE_INT_ONLY + if( eInt==0 ){ + switch( nCoord ){ + case 10: readCoord(pCellData+36, &c); aCoord[9] = c.f; + readCoord(pCellData+32, &c); aCoord[8] = c.f; + case 8: readCoord(pCellData+28, &c); aCoord[7] = c.f; + readCoord(pCellData+24, &c); aCoord[6] = c.f; + case 6: readCoord(pCellData+20, &c); aCoord[5] = c.f; + readCoord(pCellData+16, &c); aCoord[4] = c.f; + case 4: readCoord(pCellData+12, &c); aCoord[3] = c.f; + readCoord(pCellData+8, &c); aCoord[2] = c.f; + default: readCoord(pCellData+4, &c); aCoord[1] = c.f; + readCoord(pCellData, &c); aCoord[0] = c.f; + } + }else +#endif + { + switch( nCoord ){ + case 10: readCoord(pCellData+36, &c); aCoord[9] = c.i; + readCoord(pCellData+32, &c); aCoord[8] = c.i; + case 8: readCoord(pCellData+28, &c); aCoord[7] = c.i; + readCoord(pCellData+24, &c); aCoord[6] = c.i; + case 6: readCoord(pCellData+20, &c); aCoord[5] = c.i; + readCoord(pCellData+16, &c); aCoord[4] = c.i; + case 4: readCoord(pCellData+12, &c); aCoord[3] = c.i; + readCoord(pCellData+8, &c); aCoord[2] = c.i; + default: readCoord(pCellData+4, &c); aCoord[1] = c.i; + readCoord(pCellData, &c); aCoord[0] = c.i; + } + } + if( pConstraint->op==RTREE_MATCH ){ + int eWithin = 0; + rc = pConstraint->u.xGeom((sqlite3_rtree_geometry*)pInfo, + nCoord, aCoord, &eWithin); + if( eWithin==0 ) *peWithin = NOT_WITHIN; + *prScore = RTREE_ZERO; }else{ - rc = testRtreeCell(pRtree, pCursor, &isEof); - } - if( rc!=SQLITE_OK || isEof || iHeight==0 ){ - goto descend_to_cell_out; - } - - iRowid = nodeGetRowid(pRtree, pCursor->pNode, pCursor->iCell); - rc = nodeAcquire(pRtree, iRowid, pCursor->pNode, &pChild); - if( rc!=SQLITE_OK ){ - goto descend_to_cell_out; - } - - nodeRelease(pRtree, pCursor->pNode); - pCursor->pNode = pChild; - isEof = 1; - for(ii=0; isEof && iiiCell = ii; - rc = descendToCell(pRtree, pCursor, iHeight-1, &isEof); - if( rc!=SQLITE_OK ){ - goto descend_to_cell_out; + pInfo->aCoord = aCoord; + pInfo->iLevel = pSearch->iLevel - 1; + pInfo->rScore = pInfo->rParentScore = pSearch->rScore; + pInfo->eWithin = pInfo->eParentWithin = pSearch->eWithin; + rc = pConstraint->u.xQueryFunc(pInfo); + if( pInfo->eWithin<*peWithin ) *peWithin = pInfo->eWithin; + if( pInfo->rScore<*prScore || *prScorerScore; } } - - if( isEof ){ - assert( pCursor->pNode==pChild ); - nodeReference(pSavedNode); - nodeRelease(pRtree, pChild); - pCursor->pNode = pSavedNode; - pCursor->iCell = iSavedCell; - } - -descend_to_cell_out: - *pEof = isEof; return rc; } +/* +** Check the internal RTree node given by pCellData against constraint p. +** If this constraint cannot be satisfied by any child within the node, +** set *peWithin to NOT_WITHIN. +*/ +static void rtreeNonleafConstraint( + RtreeConstraint *p, /* The constraint to test */ + int eInt, /* True if RTree holds integer coordinates */ + u8 *pCellData, /* Raw cell content as appears on disk */ + int *peWithin /* Adjust downward, as appropriate */ +){ + sqlite3_rtree_dbl val; /* Coordinate value convert to a double */ + + /* p->iCoord might point to either a lower or upper bound coordinate + ** in a coordinate pair. But make pCellData point to the lower bound. + */ + pCellData += 8 + 4*(p->iCoord&0xfe); + + assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE + || p->op==RTREE_GT || p->op==RTREE_EQ ); + assert( ((((char*)pCellData) - (char*)0)&3)==0 ); /* 4-byte aligned */ + switch( p->op ){ + case RTREE_LE: + case RTREE_LT: + case RTREE_EQ: + RTREE_DECODE_COORD(eInt, pCellData, val); + /* val now holds the lower bound of the coordinate pair */ + if( p->u.rValue>=val ) return; + if( p->op!=RTREE_EQ ) break; /* RTREE_LE and RTREE_LT end here */ + /* Fall through for the RTREE_EQ case */ + + default: /* RTREE_GT or RTREE_GE, or fallthrough of RTREE_EQ */ + pCellData += 4; + RTREE_DECODE_COORD(eInt, pCellData, val); + /* val now holds the upper bound of the coordinate pair */ + if( p->u.rValue<=val ) return; + } + *peWithin = NOT_WITHIN; +} + +/* +** Check the leaf RTree cell given by pCellData against constraint p. +** If this constraint is not satisfied, set *peWithin to NOT_WITHIN. +** If the constraint is satisfied, leave *peWithin unchanged. +** +** The constraint is of the form: xN op $val +** +** The op is given by p->op. The xN is p->iCoord-th coordinate in +** pCellData. $val is given by p->u.rValue. +*/ +static void rtreeLeafConstraint( + RtreeConstraint *p, /* The constraint to test */ + int eInt, /* True if RTree holds integer coordinates */ + u8 *pCellData, /* Raw cell content as appears on disk */ + int *peWithin /* Adjust downward, as appropriate */ +){ + RtreeDValue xN; /* Coordinate value converted to a double */ + + assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE + || p->op==RTREE_GT || p->op==RTREE_EQ ); + pCellData += 8 + p->iCoord*4; + assert( ((((char*)pCellData) - (char*)0)&3)==0 ); /* 4-byte aligned */ + RTREE_DECODE_COORD(eInt, pCellData, xN); + switch( p->op ){ + case RTREE_LE: if( xN <= p->u.rValue ) return; break; + case RTREE_LT: if( xN < p->u.rValue ) return; break; + case RTREE_GE: if( xN >= p->u.rValue ) return; break; + case RTREE_GT: if( xN > p->u.rValue ) return; break; + default: if( xN == p->u.rValue ) return; break; + } + *peWithin = NOT_WITHIN; +} + /* ** One of the cells in node pNode is guaranteed to have a 64-bit ** integer value equal to iRowid. Return the index of this cell. @@ -142676,6 +164227,7 @@ static int nodeRowidIndex( ){ int ii; int nCell = NCELL(pNode); + assert( nCell<200 ); for(ii=0; iirScorerScore ) return -1; + if( pA->rScore>pB->rScore ) return +1; + if( pA->iLeveliLevel ) return -1; + if( pA->iLevel>pB->iLevel ) return +1; + return 0; +} + +/* +** Interchange two search points in a cursor. +*/ +static void rtreeSearchPointSwap(RtreeCursor *p, int i, int j){ + RtreeSearchPoint t = p->aPoint[i]; + assert( iaPoint[i] = p->aPoint[j]; + p->aPoint[j] = t; + i++; j++; + if( i=RTREE_CACHE_SZ ){ + nodeRelease(RTREE_OF_CURSOR(p), p->aNode[i]); + p->aNode[i] = 0; + }else{ + RtreeNode *pTemp = p->aNode[i]; + p->aNode[i] = p->aNode[j]; + p->aNode[j] = pTemp; + } + } +} + +/* +** Return the search point with the lowest current score. +*/ +static RtreeSearchPoint *rtreeSearchPointFirst(RtreeCursor *pCur){ + return pCur->bPoint ? &pCur->sPoint : pCur->nPoint ? pCur->aPoint : 0; +} + +/* +** Get the RtreeNode for the search point with the lowest score. +*/ +static RtreeNode *rtreeNodeOfFirstSearchPoint(RtreeCursor *pCur, int *pRC){ + sqlite3_int64 id; + int ii = 1 - pCur->bPoint; + assert( ii==0 || ii==1 ); + assert( pCur->bPoint || pCur->nPoint ); + if( pCur->aNode[ii]==0 ){ + assert( pRC!=0 ); + id = ii ? pCur->aPoint[0].id : pCur->sPoint.id; + *pRC = nodeAcquire(RTREE_OF_CURSOR(pCur), id, 0, &pCur->aNode[ii]); + } + return pCur->aNode[ii]; +} + +/* +** Push a new element onto the priority queue +*/ +static RtreeSearchPoint *rtreeEnqueue( + RtreeCursor *pCur, /* The cursor */ + RtreeDValue rScore, /* Score for the new search point */ + u8 iLevel /* Level for the new search point */ +){ + int i, j; + RtreeSearchPoint *pNew; + if( pCur->nPoint>=pCur->nPointAlloc ){ + int nNew = pCur->nPointAlloc*2 + 8; + pNew = sqlite3_realloc(pCur->aPoint, nNew*sizeof(pCur->aPoint[0])); + if( pNew==0 ) return 0; + pCur->aPoint = pNew; + pCur->nPointAlloc = nNew; + } + i = pCur->nPoint++; + pNew = pCur->aPoint + i; + pNew->rScore = rScore; + pNew->iLevel = iLevel; + assert( iLevel<=RTREE_MAX_DEPTH ); + while( i>0 ){ + RtreeSearchPoint *pParent; + j = (i-1)/2; + pParent = pCur->aPoint + j; + if( rtreeSearchPointCompare(pNew, pParent)>=0 ) break; + rtreeSearchPointSwap(pCur, j, i); + i = j; + pNew = pParent; + } + return pNew; +} + +/* +** Allocate a new RtreeSearchPoint and return a pointer to it. Return +** NULL if malloc fails. +*/ +static RtreeSearchPoint *rtreeSearchPointNew( + RtreeCursor *pCur, /* The cursor */ + RtreeDValue rScore, /* Score for the new search point */ + u8 iLevel /* Level for the new search point */ +){ + RtreeSearchPoint *pNew, *pFirst; + pFirst = rtreeSearchPointFirst(pCur); + pCur->anQueue[iLevel]++; + if( pFirst==0 + || pFirst->rScore>rScore + || (pFirst->rScore==rScore && pFirst->iLevel>iLevel) + ){ + if( pCur->bPoint ){ + int ii; + pNew = rtreeEnqueue(pCur, rScore, iLevel); + if( pNew==0 ) return 0; + ii = (int)(pNew - pCur->aPoint) + 1; + if( iiaNode[ii]==0 ); + pCur->aNode[ii] = pCur->aNode[0]; + }else{ + nodeRelease(RTREE_OF_CURSOR(pCur), pCur->aNode[0]); + } + pCur->aNode[0] = 0; + *pNew = pCur->sPoint; + } + pCur->sPoint.rScore = rScore; + pCur->sPoint.iLevel = iLevel; + pCur->bPoint = 1; + return &pCur->sPoint; + }else{ + return rtreeEnqueue(pCur, rScore, iLevel); + } +} + +#if 0 +/* Tracing routines for the RtreeSearchPoint queue */ +static void tracePoint(RtreeSearchPoint *p, int idx, RtreeCursor *pCur){ + if( idx<0 ){ printf(" s"); }else{ printf("%2d", idx); } + printf(" %d.%05lld.%02d %g %d", + p->iLevel, p->id, p->iCell, p->rScore, p->eWithin + ); + idx++; + if( idxaNode[idx]); + }else{ + printf("\n"); + } +} +static void traceQueue(RtreeCursor *pCur, const char *zPrefix){ + int ii; + printf("=== %9s ", zPrefix); + if( pCur->bPoint ){ + tracePoint(&pCur->sPoint, -1, pCur); + } + for(ii=0; iinPoint; ii++){ + if( ii>0 || pCur->bPoint ) printf(" "); + tracePoint(&pCur->aPoint[ii], ii, pCur); + } +} +# define RTREE_QUEUE_TRACE(A,B) traceQueue(A,B) +#else +# define RTREE_QUEUE_TRACE(A,B) /* no-op */ +#endif + +/* Remove the search point with the lowest current score. +*/ +static void rtreeSearchPointPop(RtreeCursor *p){ + int i, j, k, n; + i = 1 - p->bPoint; + assert( i==0 || i==1 ); + if( p->aNode[i] ){ + nodeRelease(RTREE_OF_CURSOR(p), p->aNode[i]); + p->aNode[i] = 0; + } + if( p->bPoint ){ + p->anQueue[p->sPoint.iLevel]--; + p->bPoint = 0; + }else if( p->nPoint ){ + p->anQueue[p->aPoint[0].iLevel]--; + n = --p->nPoint; + p->aPoint[0] = p->aPoint[n]; + if( naNode[1] = p->aNode[n+1]; + p->aNode[n+1] = 0; + } + i = 0; + while( (j = i*2+1)aPoint[k], &p->aPoint[j])<0 ){ + if( rtreeSearchPointCompare(&p->aPoint[k], &p->aPoint[i])<0 ){ + rtreeSearchPointSwap(p, i, k); + i = k; + }else{ + break; + } + }else{ + if( rtreeSearchPointCompare(&p->aPoint[j], &p->aPoint[i])<0 ){ + rtreeSearchPointSwap(p, i, j); + i = j; + }else{ + break; + } + } + } + } +} + + +/* +** Continue the search on cursor pCur until the front of the queue +** contains an entry suitable for returning as a result-set row, +** or until the RtreeSearchPoint queue is empty, indicating that the +** query has completed. +*/ +static int rtreeStepToLeaf(RtreeCursor *pCur){ + RtreeSearchPoint *p; + Rtree *pRtree = RTREE_OF_CURSOR(pCur); + RtreeNode *pNode; + int eWithin; + int rc = SQLITE_OK; + int nCell; + int nConstraint = pCur->nConstraint; + int ii; + int eInt; + RtreeSearchPoint x; + + eInt = pRtree->eCoordType==RTREE_COORD_INT32; + while( (p = rtreeSearchPointFirst(pCur))!=0 && p->iLevel>0 ){ + pNode = rtreeNodeOfFirstSearchPoint(pCur, &rc); + if( rc ) return rc; + nCell = NCELL(pNode); + assert( nCell<200 ); + while( p->iCellzData + (4+pRtree->nBytesPerCell*p->iCell); + eWithin = FULLY_WITHIN; + for(ii=0; iiaConstraint + ii; + if( pConstraint->op>=RTREE_MATCH ){ + rc = rtreeCallbackConstraint(pConstraint, eInt, pCellData, p, + &rScore, &eWithin); + if( rc ) return rc; + }else if( p->iLevel==1 ){ + rtreeLeafConstraint(pConstraint, eInt, pCellData, &eWithin); + }else{ + rtreeNonleafConstraint(pConstraint, eInt, pCellData, &eWithin); + } + if( eWithin==NOT_WITHIN ) break; + } + p->iCell++; + if( eWithin==NOT_WITHIN ) continue; + x.iLevel = p->iLevel - 1; + if( x.iLevel ){ + x.id = readInt64(pCellData); + x.iCell = 0; + }else{ + x.id = p->id; + x.iCell = p->iCell - 1; + } + if( p->iCell>=nCell ){ + RTREE_QUEUE_TRACE(pCur, "POP-S:"); + rtreeSearchPointPop(pCur); + } + if( rScoreeWithin = (u8)eWithin; + p->id = x.id; + p->iCell = x.iCell; + RTREE_QUEUE_TRACE(pCur, "PUSH-S:"); + break; + } + if( p->iCell>=nCell ){ + RTREE_QUEUE_TRACE(pCur, "POP-Se:"); + rtreeSearchPointPop(pCur); + } + } + pCur->atEOF = p==0; + return SQLITE_OK; +} + /* ** Rtree virtual table module xNext method. */ static int rtreeNext(sqlite3_vtab_cursor *pVtabCursor){ - Rtree *pRtree = (Rtree *)(pVtabCursor->pVtab); RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; int rc = SQLITE_OK; - /* RtreeCursor.pNode must not be NULL. If is is NULL, then this cursor is - ** already at EOF. It is against the rules to call the xNext() method of - ** a cursor that has already reached EOF. - */ - assert( pCsr->pNode ); - - if( pCsr->iStrategy==1 ){ - /* This "scan" is a direct lookup by rowid. There is no next entry. */ - nodeRelease(pRtree, pCsr->pNode); - pCsr->pNode = 0; - }else{ - /* Move to the next entry that matches the configured constraints. */ - int iHeight = 0; - while( pCsr->pNode ){ - RtreeNode *pNode = pCsr->pNode; - int nCell = NCELL(pNode); - for(pCsr->iCell++; pCsr->iCelliCell++){ - int isEof; - rc = descendToCell(pRtree, pCsr, iHeight, &isEof); - if( rc!=SQLITE_OK || !isEof ){ - return rc; - } - } - pCsr->pNode = pNode->pParent; - rc = nodeParentIndex(pRtree, pNode, &pCsr->iCell); - if( rc!=SQLITE_OK ){ - return rc; - } - nodeReference(pCsr->pNode); - nodeRelease(pRtree, pNode); - iHeight++; - } - } - + /* Move to the next entry that matches the configured constraints. */ + RTREE_QUEUE_TRACE(pCsr, "POP-Nx:"); + rtreeSearchPointPop(pCsr); + rc = rtreeStepToLeaf(pCsr); return rc; } @@ -142747,13 +164553,14 @@ static int rtreeNext(sqlite3_vtab_cursor *pVtabCursor){ ** Rtree virtual table module xRowid method. */ static int rtreeRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){ - Rtree *pRtree = (Rtree *)pVtabCursor->pVtab; RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; - - assert(pCsr->pNode); - *pRowid = nodeGetRowid(pRtree, pCsr->pNode, pCsr->iCell); - - return SQLITE_OK; + RtreeSearchPoint *p = rtreeSearchPointFirst(pCsr); + int rc = SQLITE_OK; + RtreeNode *pNode = rtreeNodeOfFirstSearchPoint(pCsr, &rc); + if( rc==SQLITE_OK && p ){ + *pRowid = nodeGetRowid(RTREE_OF_CURSOR(pCsr), pNode, p->iCell); + } + return rc; } /* @@ -142762,13 +164569,17 @@ static int rtreeRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ Rtree *pRtree = (Rtree *)cur->pVtab; RtreeCursor *pCsr = (RtreeCursor *)cur; + RtreeSearchPoint *p = rtreeSearchPointFirst(pCsr); + RtreeCoord c; + int rc = SQLITE_OK; + RtreeNode *pNode = rtreeNodeOfFirstSearchPoint(pCsr, &rc); + if( rc ) return rc; + if( p==0 ) return SQLITE_OK; if( i==0 ){ - i64 iRowid = nodeGetRowid(pRtree, pCsr->pNode, pCsr->iCell); - sqlite3_result_int64(ctx, iRowid); + sqlite3_result_int64(ctx, nodeGetRowid(pRtree, pNode, p->iCell)); }else{ - RtreeCoord c; - nodeGetCoord(pRtree, pCsr->pNode, pCsr->iCell, i-1, &c); + nodeGetCoord(pRtree, pNode, p->iCell, i-1, &c); #ifndef SQLITE_RTREE_INT_ONLY if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ sqlite3_result_double(ctx, c.f); @@ -142779,7 +164590,6 @@ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ sqlite3_result_int(ctx, c.i); } } - return SQLITE_OK; } @@ -142790,12 +164600,18 @@ static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ ** *ppLeaf to 0 and return SQLITE_OK. If an error occurs, set *ppLeaf ** to zero and return an SQLite error code. */ -static int findLeafNode(Rtree *pRtree, i64 iRowid, RtreeNode **ppLeaf){ +static int findLeafNode( + Rtree *pRtree, /* RTree to search */ + i64 iRowid, /* The rowid searching for */ + RtreeNode **ppLeaf, /* Write the node here */ + sqlite3_int64 *piNode /* Write the node-id here */ +){ int rc; *ppLeaf = 0; sqlite3_bind_int64(pRtree->pReadRowid, 1, iRowid); if( sqlite3_step(pRtree->pReadRowid)==SQLITE_ROW ){ i64 iNode = sqlite3_column_int64(pRtree->pReadRowid, 0); + if( piNode ) *piNode = iNode; rc = nodeAcquire(pRtree, iNode, 0, ppLeaf); sqlite3_reset(pRtree->pReadRowid); }else{ @@ -142811,42 +164627,45 @@ static int findLeafNode(Rtree *pRtree, i64 iRowid, RtreeNode **ppLeaf){ ** operator. */ static int deserializeGeometry(sqlite3_value *pValue, RtreeConstraint *pCons){ - RtreeMatchArg *p; - sqlite3_rtree_geometry *pGeom; - int nBlob; + RtreeMatchArg *pBlob; /* BLOB returned by geometry function */ + sqlite3_rtree_query_info *pInfo; /* Callback information */ + int nBlob; /* Size of the geometry function blob */ + int nExpected; /* Expected size of the BLOB */ /* Check that value is actually a blob. */ if( sqlite3_value_type(pValue)!=SQLITE_BLOB ) return SQLITE_ERROR; /* Check that the blob is roughly the right size. */ nBlob = sqlite3_value_bytes(pValue); - if( nBlob<(int)sizeof(RtreeMatchArg) - || ((nBlob-sizeof(RtreeMatchArg))%sizeof(RtreeDValue))!=0 - ){ + if( nBlob<(int)sizeof(RtreeMatchArg) ){ return SQLITE_ERROR; } - pGeom = (sqlite3_rtree_geometry *)sqlite3_malloc( - sizeof(sqlite3_rtree_geometry) + nBlob - ); - if( !pGeom ) return SQLITE_NOMEM; - memset(pGeom, 0, sizeof(sqlite3_rtree_geometry)); - p = (RtreeMatchArg *)&pGeom[1]; + pInfo = (sqlite3_rtree_query_info*)sqlite3_malloc( sizeof(*pInfo)+nBlob ); + if( !pInfo ) return SQLITE_NOMEM; + memset(pInfo, 0, sizeof(*pInfo)); + pBlob = (RtreeMatchArg*)&pInfo[1]; - memcpy(p, sqlite3_value_blob(pValue), nBlob); - if( p->magic!=RTREE_GEOMETRY_MAGIC - || nBlob!=(int)(sizeof(RtreeMatchArg) + (p->nParam-1)*sizeof(RtreeDValue)) - ){ - sqlite3_free(pGeom); + memcpy(pBlob, sqlite3_value_blob(pValue), nBlob); + nExpected = (int)(sizeof(RtreeMatchArg) + + pBlob->nParam*sizeof(sqlite3_value*) + + (pBlob->nParam-1)*sizeof(RtreeDValue)); + if( pBlob->magic!=RTREE_GEOMETRY_MAGIC || nBlob!=nExpected ){ + sqlite3_free(pInfo); return SQLITE_ERROR; } + pInfo->pContext = pBlob->cb.pContext; + pInfo->nParam = pBlob->nParam; + pInfo->aParam = pBlob->aParam; + pInfo->apSqlParam = pBlob->apSqlParam; - pGeom->pContext = p->pContext; - pGeom->nParam = p->nParam; - pGeom->aParam = p->aParam; - - pCons->xGeom = p->xGeom; - pCons->pGeom = pGeom; + if( pBlob->cb.xGeom ){ + pCons->u.xGeom = pBlob->cb.xGeom; + }else{ + pCons->op = RTREE_QUERY; + pCons->u.xQueryFunc = pBlob->cb.xQueryFunc; + } + pCons->pInfo = pInfo; return SQLITE_OK; } @@ -142860,44 +164679,59 @@ static int rtreeFilter( ){ Rtree *pRtree = (Rtree *)pVtabCursor->pVtab; RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; - RtreeNode *pRoot = 0; int ii; int rc = SQLITE_OK; + int iCell = 0; rtreeReference(pRtree); + /* Reset the cursor to the same state as rtreeOpen() leaves it in. */ freeCursorConstraints(pCsr); - pCsr->iStrategy = idxNum; + sqlite3_free(pCsr->aPoint); + memset(pCsr, 0, sizeof(RtreeCursor)); + pCsr->base.pVtab = (sqlite3_vtab*)pRtree; + pCsr->iStrategy = idxNum; if( idxNum==1 ){ /* Special case - lookup by rowid. */ RtreeNode *pLeaf; /* Leaf on which the required cell resides */ + RtreeSearchPoint *p; /* Search point for the leaf */ i64 iRowid = sqlite3_value_int64(argv[0]); - rc = findLeafNode(pRtree, iRowid, &pLeaf); - pCsr->pNode = pLeaf; - if( pLeaf ){ - assert( rc==SQLITE_OK ); - rc = nodeRowidIndex(pRtree, pLeaf, iRowid, &pCsr->iCell); + i64 iNode = 0; + rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode); + if( rc==SQLITE_OK && pLeaf!=0 ){ + p = rtreeSearchPointNew(pCsr, RTREE_ZERO, 0); + assert( p!=0 ); /* Always returns pCsr->sPoint */ + pCsr->aNode[0] = pLeaf; + p->id = iNode; + p->eWithin = PARTLY_WITHIN; + rc = nodeRowidIndex(pRtree, pLeaf, iRowid, &iCell); + p->iCell = (u8)iCell; + RTREE_QUEUE_TRACE(pCsr, "PUSH-F1:"); + }else{ + pCsr->atEOF = 1; } }else{ /* Normal case - r-tree scan. Set up the RtreeCursor.aConstraint array ** with the configured constraints. */ - if( argc>0 ){ + rc = nodeAcquire(pRtree, 1, 0, &pRoot); + if( rc==SQLITE_OK && argc>0 ){ pCsr->aConstraint = sqlite3_malloc(sizeof(RtreeConstraint)*argc); pCsr->nConstraint = argc; if( !pCsr->aConstraint ){ rc = SQLITE_NOMEM; }else{ memset(pCsr->aConstraint, 0, sizeof(RtreeConstraint)*argc); + memset(pCsr->anQueue, 0, sizeof(u32)*(pRtree->iDepth + 1)); assert( (idxStr==0 && argc==0) || (idxStr && (int)strlen(idxStr)==argc*2) ); for(ii=0; iiaConstraint[ii]; p->op = idxStr[ii*2]; - p->iCoord = idxStr[ii*2+1]-'a'; - if( p->op==RTREE_MATCH ){ + p->iCoord = idxStr[ii*2+1]-'0'; + if( p->op>=RTREE_MATCH ){ /* A MATCH operator. The right-hand-side must be a blob that ** can be cast into an RtreeMatchArg object. One created using ** an sqlite3_rtree_geometry_callback() SQL user function. @@ -142906,58 +164740,39 @@ static int rtreeFilter( if( rc!=SQLITE_OK ){ break; } + p->pInfo->nCoord = pRtree->nDim2; + p->pInfo->anQueue = pCsr->anQueue; + p->pInfo->mxLevel = pRtree->iDepth + 1; }else{ #ifdef SQLITE_RTREE_INT_ONLY - p->rValue = sqlite3_value_int64(argv[ii]); + p->u.rValue = sqlite3_value_int64(argv[ii]); #else - p->rValue = sqlite3_value_double(argv[ii]); + p->u.rValue = sqlite3_value_double(argv[ii]); #endif } } } } - if( rc==SQLITE_OK ){ - pCsr->pNode = 0; - rc = nodeAcquire(pRtree, 1, 0, &pRoot); - } - if( rc==SQLITE_OK ){ - int isEof = 1; - int nCell = NCELL(pRoot); - pCsr->pNode = pRoot; - for(pCsr->iCell=0; rc==SQLITE_OK && pCsr->iCelliCell++){ - assert( pCsr->pNode==pRoot ); - rc = descendToCell(pRtree, pCsr, pRtree->iDepth, &isEof); - if( !isEof ){ - break; - } - } - if( rc==SQLITE_OK && isEof ){ - assert( pCsr->pNode==pRoot ); - nodeRelease(pRtree, pRoot); - pCsr->pNode = 0; - } - assert( rc!=SQLITE_OK || !pCsr->pNode || pCsr->iCellpNode) ); + RtreeSearchPoint *pNew; + pNew = rtreeSearchPointNew(pCsr, RTREE_ZERO, (u8)(pRtree->iDepth+1)); + if( pNew==0 ) return SQLITE_NOMEM; + pNew->id = 1; + pNew->iCell = 0; + pNew->eWithin = PARTLY_WITHIN; + assert( pCsr->bPoint==1 ); + pCsr->aNode[0] = pRoot; + pRoot = 0; + RTREE_QUEUE_TRACE(pCsr, "PUSH-Fm:"); + rc = rtreeStepToLeaf(pCsr); } } + nodeRelease(pRtree, pRoot); rtreeRelease(pRtree); return rc; } -/* -** Set the pIdxInfo->estimatedRows variable to nRow. Unless this -** extension is currently being used by a version of SQLite too old to -** support estimatedRows. In that case this function is a no-op. -*/ -static void setEstimatedRows(sqlite3_index_info *pIdxInfo, i64 nRow){ -#if SQLITE_VERSION_NUMBER>=3008002 - if( sqlite3_libversion_number()>=3008002 ){ - pIdxInfo->estimatedRows = nRow; - } -#endif -} - /* ** Rtree virtual table module xBestIndex method. There are three ** table scan strategies to choose from (in order from most to @@ -142996,17 +164811,30 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ Rtree *pRtree = (Rtree*)tab; int rc = SQLITE_OK; int ii; + int bMatch = 0; /* True if there exists a MATCH constraint */ i64 nRow; /* Estimated rows returned by this scan */ int iIdx = 0; char zIdxStr[RTREE_MAX_DIMENSIONS*8+1]; memset(zIdxStr, 0, sizeof(zIdxStr)); + /* Check if there exists a MATCH constraint - even an unusable one. If there + ** is, do not consider the lookup-by-rowid plan as using such a plan would + ** require the VDBE to evaluate the MATCH constraint, which is not currently + ** possible. */ + for(ii=0; iinConstraint; ii++){ + if( pIdxInfo->aConstraint[ii].op==SQLITE_INDEX_CONSTRAINT_MATCH ){ + bMatch = 1; + } + } + assert( pIdxInfo->idxStr==0 ); for(ii=0; iinConstraint && iIdx<(int)(sizeof(zIdxStr)-1); ii++){ struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii]; - if( p->usable && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){ + if( bMatch==0 && p->usable + && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ + ){ /* We have an equality constraint on the rowid. Use strategy 1. */ int jj; for(jj=0; jjestimatedCost = 30.0; - setEstimatedRows(pIdxInfo, 1); + pIdxInfo->estimatedRows = 1; return SQLITE_OK; } @@ -143042,7 +164870,7 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ break; } zIdxStr[iIdx++] = op; - zIdxStr[iIdx++] = p->iColumn - 1 + 'a'; + zIdxStr[iIdx++] = (char)(p->iColumn - 1 + '0'); pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2); pIdxInfo->aConstraintUsage[ii].omit = 1; } @@ -143054,9 +164882,9 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ return SQLITE_NOMEM; } - nRow = pRtree->nRowEst / (iIdx + 1); + nRow = pRtree->nRowEst >> (iIdx/2); pIdxInfo->estimatedCost = (double)6.0 * (double)nRow; - setEstimatedRows(pIdxInfo, nRow); + pIdxInfo->estimatedRows = nRow; return rc; } @@ -143066,9 +164894,26 @@ static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ */ static RtreeDValue cellArea(Rtree *pRtree, RtreeCell *p){ RtreeDValue area = (RtreeDValue)1; - int ii; - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - area = (area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]))); + assert( pRtree->nDim>=1 && pRtree->nDim<=5 ); +#ifndef SQLITE_RTREE_INT_ONLY + if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ + switch( pRtree->nDim ){ + case 5: area = p->aCoord[9].f - p->aCoord[8].f; + case 4: area *= p->aCoord[7].f - p->aCoord[6].f; + case 3: area *= p->aCoord[5].f - p->aCoord[4].f; + case 2: area *= p->aCoord[3].f - p->aCoord[2].f; + default: area *= p->aCoord[1].f - p->aCoord[0].f; + } + }else +#endif + { + switch( pRtree->nDim ){ + case 5: area = p->aCoord[9].i - p->aCoord[8].i; + case 4: area *= p->aCoord[7].i - p->aCoord[6].i; + case 3: area *= p->aCoord[5].i - p->aCoord[4].i; + case 2: area *= p->aCoord[3].i - p->aCoord[2].i; + default: area *= p->aCoord[1].i - p->aCoord[0].i; + } } return area; } @@ -143078,11 +164923,12 @@ static RtreeDValue cellArea(Rtree *pRtree, RtreeCell *p){ ** of the objects size in each dimension. */ static RtreeDValue cellMargin(Rtree *pRtree, RtreeCell *p){ - RtreeDValue margin = (RtreeDValue)0; - int ii; - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + RtreeDValue margin = 0; + int ii = pRtree->nDim2 - 2; + do{ margin += (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii])); - } + ii -= 2; + }while( ii>=0 ); return margin; } @@ -143090,17 +164936,19 @@ static RtreeDValue cellMargin(Rtree *pRtree, RtreeCell *p){ ** Store the union of cells p1 and p2 in p1. */ static void cellUnion(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ - int ii; + int ii = 0; if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + do{ p1->aCoord[ii].f = MIN(p1->aCoord[ii].f, p2->aCoord[ii].f); p1->aCoord[ii+1].f = MAX(p1->aCoord[ii+1].f, p2->aCoord[ii+1].f); - } + ii += 2; + }while( iinDim2 ); }else{ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + do{ p1->aCoord[ii].i = MIN(p1->aCoord[ii].i, p2->aCoord[ii].i); p1->aCoord[ii+1].i = MAX(p1->aCoord[ii+1].i, p2->aCoord[ii+1].i); - } + ii += 2; + }while( iinDim2 ); } } @@ -143111,7 +164959,7 @@ static void cellUnion(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ static int cellContains(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ int ii; int isInt = (pRtree->eCoordType==RTREE_COORD_INT32); - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + for(ii=0; iinDim2; ii+=2){ RtreeCoord *a1 = &p1->aCoord[ii]; RtreeCoord *a2 = &p2->aCoord[ii]; if( (!isInt && (a2[0].fa1[1].f)) @@ -143135,62 +164983,32 @@ static RtreeDValue cellGrowth(Rtree *pRtree, RtreeCell *p, RtreeCell *pCell){ return (cellArea(pRtree, &cell)-area); } -#if VARIANT_RSTARTREE_CHOOSESUBTREE || VARIANT_RSTARTREE_SPLIT static RtreeDValue cellOverlap( Rtree *pRtree, RtreeCell *p, RtreeCell *aCell, - int nCell, - int iExclude + int nCell ){ int ii; - RtreeDValue overlap = 0.0; + RtreeDValue overlap = RTREE_ZERO; for(ii=0; iinDim*2); jj+=2){ - RtreeDValue x1, x2; - - x1 = MAX(DCOORD(p->aCoord[jj]), DCOORD(aCell[ii].aCoord[jj])); - x2 = MIN(DCOORD(p->aCoord[jj+1]), DCOORD(aCell[ii].aCoord[jj+1])); - - if( x2nDim2; jj+=2){ + RtreeDValue x1, x2; + x1 = MAX(DCOORD(p->aCoord[jj]), DCOORD(aCell[ii].aCoord[jj])); + x2 = MIN(DCOORD(p->aCoord[jj+1]), DCOORD(aCell[ii].aCoord[jj+1])); + if( x2iDepth-1) ){ - int jj; - aCell = sqlite3_malloc(sizeof(RtreeCell)*nCell); - if( !aCell ){ - rc = SQLITE_NOMEM; - nodeRelease(pRtree, pNode); - pNode = 0; - continue; - } - for(jj=0; jjiDepth-1) ){ - overlap = cellOverlapEnlargement(pRtree,&cell,pCell,aCell,nCell,iCell); - }else{ - overlap = 0.0; - } - if( (iCell==0) - || (overlapnDim; i++){ - RtreeDValue x1 = DCOORD(aCell[0].aCoord[i*2]); - RtreeDValue x2 = DCOORD(aCell[0].aCoord[i*2+1]); - RtreeDValue x3 = x1; - RtreeDValue x4 = x2; - int jj; - - int iCellLeft = 0; - int iCellRight = 0; - - for(jj=1; jjx4 ) x4 = right; - if( left>x3 ){ - x3 = left; - iCellRight = jj; - } - if( rightmaxNormalInnerWidth ){ - iLeftSeed = iCellLeft; - iRightSeed = iCellRight; - } - } - } - - *piLeftSeed = iLeftSeed; - *piRightSeed = iRightSeed; -} -#endif /* VARIANT_GUTTMAN_LINEAR_SPLIT */ - -#if VARIANT_GUTTMAN_QUADRATIC_SPLIT -/* -** Implementation of the quadratic variant of the PickNext() function from -** Guttman[84]. -*/ -static RtreeCell *QuadraticPickNext( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - RtreeCell *pLeftBox, - RtreeCell *pRightBox, - int *aiUsed -){ - #define FABS(a) ((a)<0.0?-1.0*(a):(a)) - - int iSelect = -1; - RtreeDValue fDiff; - int ii; - for(ii=0; iifDiff ){ - fDiff = diff; - iSelect = ii; - } - } - } - aiUsed[iSelect] = 1; - return &aCell[iSelect]; -} - -/* -** Implementation of the quadratic variant of the PickSeeds() function from -** Guttman[84]. -*/ -static void QuadraticPickSeeds( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - int *piLeftSeed, - int *piRightSeed -){ - int ii; - int jj; - - int iLeftSeed = 0; - int iRightSeed = 1; - RtreeDValue fWaste = 0.0; - - for(ii=0; iifWaste ){ - iLeftSeed = ii; - iRightSeed = jj; - fWaste = waste; - } - } - } - - *piLeftSeed = iLeftSeed; - *piRightSeed = iRightSeed; -} -#endif /* VARIANT_GUTTMAN_QUADRATIC_SPLIT */ /* ** Arguments aIdx, aDistance and aSpare all point to arrays of size @@ -143631,7 +165263,6 @@ static void SortByDimension( } } -#if VARIANT_RSTARTREE_SPLIT /* ** Implementation of the R*-tree variant of SplitNode from Beckman[1990]. */ @@ -143650,7 +165281,7 @@ static int splitNodeStartree( int iBestDim = 0; int iBestSplit = 0; - RtreeDValue fBestMargin = 0.0; + RtreeDValue fBestMargin = RTREE_ZERO; int nByte = (pRtree->nDim+1)*(sizeof(int*)+nCell*sizeof(int)); @@ -143671,9 +165302,9 @@ static int splitNodeStartree( } for(ii=0; iinDim; ii++){ - RtreeDValue margin = 0.0; - RtreeDValue fBestOverlap = 0.0; - RtreeDValue fBestArea = 0.0; + RtreeDValue margin = RTREE_ZERO; + RtreeDValue fBestOverlap = RTREE_ZERO; + RtreeDValue fBestArea = RTREE_ZERO; int iBestLeft = 0; int nLeft; @@ -143699,7 +165330,7 @@ static int splitNodeStartree( } margin += cellMargin(pRtree, &left); margin += cellMargin(pRtree, &right); - overlap = cellOverlap(pRtree, &left, &right, 1, -1); + overlap = cellOverlap(pRtree, &left, &right, 1); area = cellArea(pRtree, &left) + cellArea(pRtree, &right); if( (nLeft==RTREE_MINCELLS(pRtree)) || (overlap0; i--){ - RtreeCell *pNext; - pNext = PickNext(pRtree, aCell, nCell, pBboxLeft, pBboxRight, aiUsed); - RtreeDValue diff = - cellGrowth(pRtree, pBboxLeft, pNext) - - cellGrowth(pRtree, pBboxRight, pNext) - ; - if( (RTREE_MINCELLS(pRtree)-NCELL(pRight)==i) - || (diff>0.0 && (RTREE_MINCELLS(pRtree)-NCELL(pLeft)!=i)) - ){ - nodeInsertCell(pRtree, pRight, pNext); - cellUnion(pRtree, pBboxRight, pNext); - }else{ - nodeInsertCell(pRtree, pLeft, pNext); - cellUnion(pRtree, pBboxLeft, pNext); - } - } - - sqlite3_free(aiUsed); - return SQLITE_OK; -} -#endif static int updateMapping( Rtree *pRtree, @@ -143865,7 +165440,8 @@ static int SplitNode( memset(pLeft->zData, 0, pRtree->iNodeSize); memset(pRight->zData, 0, pRtree->iNodeSize); - rc = AssignCells(pRtree, aCell, nCell, pLeft, pRight, &leftbbox, &rightbbox); + rc = splitNodeStartree(pRtree, aCell, nCell, pLeft, pRight, + &leftbbox, &rightbbox); if( rc!=SQLITE_OK ){ goto splitnode_out; } @@ -144148,7 +165724,7 @@ static int Reinsert( } for(ii=0; iinDim; iDim++){ RtreeDValue coord = (DCOORD(aCell[ii].aCoord[iDim*2+1]) - DCOORD(aCell[ii].aCoord[iDim*2])); @@ -144214,16 +165790,12 @@ static int rtreeInsertCell( } } if( nodeInsertCell(pRtree, pNode, pCell) ){ -#if VARIANT_RSTARTREE_REINSERT if( iHeight<=pRtree->iReinsertHeight || pNode->iNode==1){ rc = SplitNode(pRtree, pNode, pCell, iHeight); }else{ pRtree->iReinsertHeight = iHeight; rc = Reinsert(pRtree, pNode, pCell, iHeight); } -#else - rc = SplitNode(pRtree, pNode, pCell, iHeight); -#endif }else{ rc = AdjustTree(pRtree, pNode, pCell); if( rc==SQLITE_OK ){ @@ -144293,7 +165865,7 @@ static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){ ** about to be deleted. */ if( rc==SQLITE_OK ){ - rc = findLeafNode(pRtree, iDelete, &pLeaf); + rc = findLeafNode(pRtree, iDelete, &pLeaf, 0); } /* Delete the cell in question from the leaf node. */ @@ -144389,6 +165961,53 @@ static RtreeValue rtreeValueUp(sqlite3_value *v){ } #endif /* !defined(SQLITE_RTREE_INT_ONLY) */ +/* +** A constraint has failed while inserting a row into an rtree table. +** Assuming no OOM error occurs, this function sets the error message +** (at pRtree->base.zErrMsg) to an appropriate value and returns +** SQLITE_CONSTRAINT. +** +** Parameter iCol is the index of the leftmost column involved in the +** constraint failure. If it is 0, then the constraint that failed is +** the unique constraint on the id column. Otherwise, it is the rtree +** (c1<=c2) constraint on columns iCol and iCol+1 that has failed. +** +** If an OOM occurs, SQLITE_NOMEM is returned instead of SQLITE_CONSTRAINT. +*/ +static int rtreeConstraintError(Rtree *pRtree, int iCol){ + sqlite3_stmt *pStmt = 0; + char *zSql; + int rc; + + assert( iCol==0 || iCol%2 ); + zSql = sqlite3_mprintf("SELECT * FROM %Q.%Q", pRtree->zDb, pRtree->zName); + if( zSql ){ + rc = sqlite3_prepare_v2(pRtree->db, zSql, -1, &pStmt, 0); + }else{ + rc = SQLITE_NOMEM; + } + sqlite3_free(zSql); + + if( rc==SQLITE_OK ){ + if( iCol==0 ){ + const char *zCol = sqlite3_column_name(pStmt, 0); + pRtree->base.zErrMsg = sqlite3_mprintf( + "UNIQUE constraint failed: %s.%s", pRtree->zName, zCol + ); + }else{ + const char *zCol1 = sqlite3_column_name(pStmt, iCol); + const char *zCol2 = sqlite3_column_name(pStmt, iCol+1); + pRtree->base.zErrMsg = sqlite3_mprintf( + "rtree constraint failed: %s.(%s<=%s)", pRtree->zName, zCol1, zCol2 + ); + } + } + + sqlite3_finalize(pStmt); + return (rc==SQLITE_OK ? SQLITE_CONSTRAINT : rc); +} + + /* ** The xUpdate method for rtree module virtual tables. @@ -144407,6 +166026,8 @@ static int rtreeUpdate( rtreeReference(pRtree); assert(nData>=1); + cell.iRowid = 0; /* Used only to suppress a compiler warning */ + /* Constraint handling. A write operation on an r-tree table may return ** SQLITE_CONSTRAINT for two reasons: ** @@ -144421,26 +166042,34 @@ static int rtreeUpdate( if( nData>1 ){ int ii; - /* Populate the cell.aCoord[] array. The first coordinate is azData[3]. */ - assert( nData==(pRtree->nDim*2 + 3) ); + /* Populate the cell.aCoord[] array. The first coordinate is azData[3]. + ** + ** NB: nData can only be less than nDim*2+3 if the rtree is mis-declared + ** with "column" that are interpreted as table constraints. + ** Example: CREATE VIRTUAL TABLE bad USING rtree(x,y,CHECK(y>5)); + ** This problem was discovered after years of use, so we silently ignore + ** these kinds of misdeclared tables to avoid breaking any legacy. + */ + assert( nData<=(pRtree->nDim2 + 3) ); + #ifndef SQLITE_RTREE_INT_ONLY if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + for(ii=0; iicell.aCoord[ii+1].f ){ - rc = SQLITE_CONSTRAINT; + rc = rtreeConstraintError(pRtree, ii+1); goto constraint; } } }else #endif { - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ + for(ii=0; iicell.aCoord[ii+1].i ){ - rc = SQLITE_CONSTRAINT; + rc = rtreeConstraintError(pRtree, ii+1); goto constraint; } } @@ -144461,7 +166090,7 @@ static int rtreeUpdate( if( sqlite3_vtab_on_conflict(pRtree->db)==SQLITE_REPLACE ){ rc = rtreeDeleteRowid(pRtree, cell.iRowid); }else{ - rc = SQLITE_CONSTRAINT; + rc = rtreeConstraintError(pRtree, 0); goto constraint; } } @@ -144511,6 +166140,27 @@ constraint: return rc; } +/* +** Called when a transaction starts. +*/ +static int rtreeBeginTransaction(sqlite3_vtab *pVtab){ + Rtree *pRtree = (Rtree *)pVtab; + assert( pRtree->inWrTrans==0 ); + pRtree->inWrTrans++; + return SQLITE_OK; +} + +/* +** Called when a transaction completes (either by COMMIT or ROLLBACK). +** The sqlite3_blob object should be released at this point. +*/ +static int rtreeEndTransaction(sqlite3_vtab *pVtab){ + Rtree *pRtree = (Rtree *)pVtab; + pRtree->inWrTrans = 0; + nodeBlobReset(pRtree); + return SQLITE_OK; +} + /* ** The xRename method for rtree module virtual tables. */ @@ -144532,32 +166182,46 @@ static int rtreeRename(sqlite3_vtab *pVtab, const char *zNewName){ return rc; } + /* ** This function populates the pRtree->nRowEst variable with an estimate ** of the number of rows in the virtual table. If possible, this is based ** on sqlite_stat1 data. Otherwise, use RTREE_DEFAULT_ROWEST. */ static int rtreeQueryStat1(sqlite3 *db, Rtree *pRtree){ - const char *zSql = "SELECT stat FROM sqlite_stat1 WHERE tbl= ? || '_rowid'"; + const char *zFmt = "SELECT stat FROM %Q.sqlite_stat1 WHERE tbl = '%q_rowid'"; + char *zSql; sqlite3_stmt *p; int rc; i64 nRow = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &p, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_text(p, 1, pRtree->zName, -1, SQLITE_STATIC); - if( sqlite3_step(p)==SQLITE_ROW ) nRow = sqlite3_column_int64(p, 0); - rc = sqlite3_finalize(p); - }else if( rc!=SQLITE_NOMEM ){ - rc = SQLITE_OK; + rc = sqlite3_table_column_metadata( + db, pRtree->zDb, "sqlite_stat1",0,0,0,0,0,0 + ); + if( rc!=SQLITE_OK ){ + pRtree->nRowEst = RTREE_DEFAULT_ROWEST; + return rc==SQLITE_ERROR ? SQLITE_OK : rc; } - - if( rc==SQLITE_OK ){ - if( nRow==0 ){ - pRtree->nRowEst = RTREE_DEFAULT_ROWEST; - }else{ - pRtree->nRowEst = MAX(nRow, RTREE_MIN_ROWEST); + zSql = sqlite3_mprintf(zFmt, pRtree->zDb, pRtree->zName); + if( zSql==0 ){ + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(db, zSql, -1, &p, 0); + if( rc==SQLITE_OK ){ + if( sqlite3_step(p)==SQLITE_ROW ) nRow = sqlite3_column_int64(p, 0); + rc = sqlite3_finalize(p); + }else if( rc!=SQLITE_NOMEM ){ + rc = SQLITE_OK; } + + if( rc==SQLITE_OK ){ + if( nRow==0 ){ + pRtree->nRowEst = RTREE_DEFAULT_ROWEST; + }else{ + pRtree->nRowEst = MAX(nRow, RTREE_MIN_ROWEST); + } + } + sqlite3_free(zSql); } return rc; @@ -144578,15 +166242,15 @@ static sqlite3_module rtreeModule = { rtreeColumn, /* xColumn - read data */ rtreeRowid, /* xRowid - read data */ rtreeUpdate, /* xUpdate - write data */ - 0, /* xBegin - begin transaction */ - 0, /* xSync - sync transaction */ - 0, /* xCommit - commit transaction */ - 0, /* xRollback - rollback transaction */ + rtreeBeginTransaction, /* xBegin - begin transaction */ + rtreeEndTransaction, /* xSync - sync transaction */ + rtreeEndTransaction, /* xCommit - commit transaction */ + rtreeEndTransaction, /* xRollback - rollback transaction */ 0, /* xFindFunction - function overloading */ rtreeRename, /* xRename - rename the table */ 0, /* xSavepoint */ 0, /* xRelease */ - 0 /* xRollbackTo */ + 0, /* xRollbackTo */ }; static int rtreeSqlInit( @@ -144598,10 +166262,9 @@ static int rtreeSqlInit( ){ int rc = SQLITE_OK; - #define N_STATEMENT 9 + #define N_STATEMENT 8 static const char *azSql[N_STATEMENT] = { - /* Read and write the xxx_node table */ - "SELECT data FROM '%q'.'%q_node' WHERE nodeno = :1", + /* Write the xxx_node table */ "INSERT OR REPLACE INTO '%q'.'%q_node' VALUES(:1, :2)", "DELETE FROM '%q'.'%q_node' WHERE nodeno = :1", @@ -144624,7 +166287,8 @@ static int rtreeSqlInit( char *zCreate = sqlite3_mprintf( "CREATE TABLE \"%w\".\"%w_node\"(nodeno INTEGER PRIMARY KEY, data BLOB);" "CREATE TABLE \"%w\".\"%w_rowid\"(rowid INTEGER PRIMARY KEY, nodeno INTEGER);" -"CREATE TABLE \"%w\".\"%w_parent\"(nodeno INTEGER PRIMARY KEY, parentnode INTEGER);" +"CREATE TABLE \"%w\".\"%w_parent\"(nodeno INTEGER PRIMARY KEY," + " parentnode INTEGER);" "INSERT INTO '%q'.'%q_node' VALUES(1, zeroblob(%d))", zDb, zPrefix, zDb, zPrefix, zDb, zPrefix, zDb, zPrefix, pRtree->iNodeSize ); @@ -144638,15 +166302,14 @@ static int rtreeSqlInit( } } - appStmt[0] = &pRtree->pReadNode; - appStmt[1] = &pRtree->pWriteNode; - appStmt[2] = &pRtree->pDeleteNode; - appStmt[3] = &pRtree->pReadRowid; - appStmt[4] = &pRtree->pWriteRowid; - appStmt[5] = &pRtree->pDeleteRowid; - appStmt[6] = &pRtree->pReadParent; - appStmt[7] = &pRtree->pWriteParent; - appStmt[8] = &pRtree->pDeleteParent; + appStmt[0] = &pRtree->pWriteNode; + appStmt[1] = &pRtree->pDeleteNode; + appStmt[2] = &pRtree->pReadRowid; + appStmt[3] = &pRtree->pWriteRowid; + appStmt[4] = &pRtree->pDeleteRowid; + appStmt[5] = &pRtree->pReadParent; + appStmt[6] = &pRtree->pWriteParent; + appStmt[7] = &pRtree->pDeleteParent; rc = rtreeQueryStat1(db, pRtree); for(i=0; ibase.pModule = &rtreeModule; pRtree->zDb = (char *)&pRtree[1]; pRtree->zName = &pRtree->zDb[nDb+1]; - pRtree->nDim = (argc-4)/2; - pRtree->nBytesPerCell = 8 + pRtree->nDim*4*2; - pRtree->eCoordType = eCoordType; + pRtree->nDim = (u8)((argc-4)/2); + pRtree->nDim2 = pRtree->nDim*2; + pRtree->nBytesPerCell = 8 + pRtree->nDim2*4; + pRtree->eCoordType = (u8)eCoordType; memcpy(pRtree->zDb, argv[1], nDb); memcpy(pRtree->zName, argv[2], nName); @@ -144826,6 +166490,8 @@ static int rtreeInit( if( rc==SQLITE_OK ){ *ppVtab = (sqlite3_vtab *)pRtree; }else{ + assert( *ppVtab==0 ); + assert( pRtree->nBusy==1 ); rtreeRelease(pRtree); } return rc; @@ -144836,10 +166502,10 @@ static int rtreeInit( ** Implementation of a scalar function that decodes r-tree nodes to ** human readable strings. This can be used for debugging and analysis. ** -** The scalar function takes two arguments, a blob of data containing -** an r-tree node, and the number of dimensions the r-tree indexes. -** For a two-dimensional r-tree structure called "rt", to deserialize -** all nodes, a statement like: +** The scalar function takes two arguments: (1) the number of dimensions +** to the rtree (between 1 and 5, inclusive) and (2) a blob of data containing +** an r-tree node. For a two-dimensional r-tree structure called "rt", to +** deserialize all nodes, a statement like: ** ** SELECT rtreenode(2, data) FROM rt_node; ** @@ -144857,7 +166523,8 @@ static void rtreenode(sqlite3_context *ctx, int nArg, sqlite3_value **apArg){ UNUSED_PARAMETER(nArg); memset(&node, 0, sizeof(RtreeNode)); memset(&tree, 0, sizeof(Rtree)); - tree.nDim = sqlite3_value_int(apArg[0]); + tree.nDim = (u8)sqlite3_value_int(apArg[0]); + tree.nDim2 = tree.nDim*2; tree.nBytesPerCell = 8 + 8 * tree.nDim; node.zData = (u8 *)sqlite3_value_blob(apArg[1]); @@ -144870,9 +166537,9 @@ static void rtreenode(sqlite3_context *ctx, int nArg, sqlite3_value **apArg){ nodeGetCell(&tree, &node, ii, &cell); sqlite3_snprintf(512-nCell,&zCell[nCell],"%lld", cell.iRowid); nCell = (int)strlen(zCell); - for(jj=0; jjxDestructor ) pInfo->xDestructor(pInfo->pContext); sqlite3_free(p); } /* -** Each call to sqlite3_rtree_geometry_callback() creates an ordinary SQLite -** scalar user function. This C function is the callback used for all such -** registered SQL functions. +** This routine frees the BLOB that is returned by geomCallback(). +*/ +static void rtreeMatchArgFree(void *pArg){ + int i; + RtreeMatchArg *p = (RtreeMatchArg*)pArg; + for(i=0; inParam; i++){ + sqlite3_value_free(p->apSqlParam[i]); + } + sqlite3_free(p); +} + +/* +** Each call to sqlite3_rtree_geometry_callback() or +** sqlite3_rtree_query_callback() creates an ordinary SQLite +** scalar function that is implemented by this routine. ** -** The scalar user functions return a blob that is interpreted by r-tree -** table MATCH operators. +** All this function does is construct an RtreeMatchArg object that +** contains the geometry-checking callback routines and a list of +** parameters to this function, then return that RtreeMatchArg object +** as a BLOB. +** +** The R-Tree MATCH operator will read the returned BLOB, deserialize +** the RtreeMatchArg object, and use the RtreeMatchArg object to figure +** out which elements of the R-Tree should be returned by the query. */ static void geomCallback(sqlite3_context *ctx, int nArg, sqlite3_value **aArg){ RtreeGeomCallback *pGeomCtx = (RtreeGeomCallback *)sqlite3_user_data(ctx); RtreeMatchArg *pBlob; int nBlob; + int memErr = 0; - nBlob = sizeof(RtreeMatchArg) + (nArg-1)*sizeof(RtreeDValue); + nBlob = sizeof(RtreeMatchArg) + (nArg-1)*sizeof(RtreeDValue) + + nArg*sizeof(sqlite3_value*); pBlob = (RtreeMatchArg *)sqlite3_malloc(nBlob); if( !pBlob ){ sqlite3_result_error_nomem(ctx); }else{ int i; pBlob->magic = RTREE_GEOMETRY_MAGIC; - pBlob->xGeom = pGeomCtx->xGeom; - pBlob->pContext = pGeomCtx->pContext; + pBlob->cb = pGeomCtx[0]; + pBlob->apSqlParam = (sqlite3_value**)&pBlob->aParam[nArg]; pBlob->nParam = nArg; for(i=0; iapSqlParam[i] = sqlite3_value_dup(aArg[i]); + if( pBlob->apSqlParam[i]==0 ) memErr = 1; #ifdef SQLITE_RTREE_INT_ONLY pBlob->aParam[i] = sqlite3_value_int64(aArg[i]); #else pBlob->aParam[i] = sqlite3_value_double(aArg[i]); #endif } - sqlite3_result_blob(ctx, pBlob, nBlob, doSqlite3Free); + if( memErr ){ + sqlite3_result_error_nomem(ctx); + rtreeMatchArgFree(pBlob); + }else{ + sqlite3_result_blob(ctx, pBlob, nBlob, rtreeMatchArgFree); + } } } @@ -144982,10 +166688,10 @@ static void geomCallback(sqlite3_context *ctx, int nArg, sqlite3_value **aArg){ ** Register a new geometry function for use with the r-tree MATCH operator. */ SQLITE_API int sqlite3_rtree_geometry_callback( - sqlite3 *db, - const char *zGeom, - int (*xGeom)(sqlite3_rtree_geometry *, int, RtreeDValue *, int *), - void *pContext + sqlite3 *db, /* Register SQL function on this connection */ + const char *zGeom, /* Name of the new SQL function */ + int (*xGeom)(sqlite3_rtree_geometry*,int,RtreeDValue*,int*), /* Callback */ + void *pContext /* Extra data associated with the callback */ ){ RtreeGeomCallback *pGeomCtx; /* Context object for new user-function */ @@ -144993,12 +166699,36 @@ SQLITE_API int sqlite3_rtree_geometry_callback( pGeomCtx = (RtreeGeomCallback *)sqlite3_malloc(sizeof(RtreeGeomCallback)); if( !pGeomCtx ) return SQLITE_NOMEM; pGeomCtx->xGeom = xGeom; + pGeomCtx->xQueryFunc = 0; + pGeomCtx->xDestructor = 0; pGeomCtx->pContext = pContext; - - /* Create the new user-function. Register a destructor function to delete - ** the context object when it is no longer required. */ return sqlite3_create_function_v2(db, zGeom, -1, SQLITE_ANY, - (void *)pGeomCtx, geomCallback, 0, 0, doSqlite3Free + (void *)pGeomCtx, geomCallback, 0, 0, rtreeFreeCallback + ); +} + +/* +** Register a new 2nd-generation geometry function for use with the +** r-tree MATCH operator. +*/ +SQLITE_API int sqlite3_rtree_query_callback( + sqlite3 *db, /* Register SQL function on this connection */ + const char *zQueryFunc, /* Name of new SQL function */ + int (*xQueryFunc)(sqlite3_rtree_query_info*), /* Callback */ + void *pContext, /* Extra data passed into the callback */ + void (*xDestructor)(void*) /* Destructor for the extra data */ +){ + RtreeGeomCallback *pGeomCtx; /* Context object for new user-function */ + + /* Allocate and populate the context object. */ + pGeomCtx = (RtreeGeomCallback *)sqlite3_malloc(sizeof(RtreeGeomCallback)); + if( !pGeomCtx ) return SQLITE_NOMEM; + pGeomCtx->xGeom = 0; + pGeomCtx->xQueryFunc = xQueryFunc; + pGeomCtx->xDestructor = xDestructor; + pGeomCtx->pContext = pContext; + return sqlite3_create_function_v2(db, zQueryFunc, -1, SQLITE_ANY, + (void *)pGeomCtx, geomCallback, 0, 0, rtreeFreeCallback ); } @@ -145031,7 +166761,7 @@ SQLITE_API int sqlite3_rtree_init( ** May you share freely, never taking more than you give. ** ************************************************************************* -** Id: icu.c,v 1.7 2007/12/13 21:54:11 drh Exp +** Id: icu.c,v 1.7 2007/12/13 21:54:11 drh Exp ** ** This file implements an integration between the ICU library ** ("International Components for Unicode", an open-source library @@ -145061,8 +166791,10 @@ SQLITE_API int sqlite3_rtree_init( /* #include */ #ifndef SQLITE_CORE +/* #include "sqlite3ext.h" */ SQLITE_EXTENSION_INIT1 #else +/* #include "sqlite3.h" */ #endif /* @@ -145080,6 +166812,38 @@ static void xFree(void *p){ sqlite3_free(p); } +/* +** This lookup table is used to help decode the first byte of +** a multi-byte UTF8 character. It is copied here from SQLite source +** code file utf8.c. +*/ +static const unsigned char icuUtf8Trans1[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x00, 0x00, +}; + +#define SQLITE_ICU_READ_UTF8(zIn, c) \ + c = *(zIn++); \ + if( c>=0xc0 ){ \ + c = icuUtf8Trans1[c-0xc0]; \ + while( (*zIn & 0xc0)==0x80 ){ \ + c = (c<<6) + (0x3f & *(zIn++)); \ + } \ + } + +#define SQLITE_ICU_SKIP_UTF8(zIn) \ + assert( *zIn ); \ + if( *(zIn++)>=0xc0 ){ \ + while( (*zIn & 0xc0)==0x80 ){zIn++;} \ + } + + /* ** Compare two UTF-8 strings for equality where the first string is ** a "LIKE" expression. Return true (1) if they are the same and @@ -145093,17 +166857,14 @@ static int icuLikeCompare( static const int MATCH_ONE = (UChar32)'_'; static const int MATCH_ALL = (UChar32)'%'; - int iPattern = 0; /* Current byte index in zPattern */ - int iString = 0; /* Current byte index in zString */ - int prevEscape = 0; /* True if the previous character was uEsc */ - while( zPattern[iPattern]!=0 ){ + while( 1 ){ /* Read (and consume) the next character from the input pattern. */ UChar32 uPattern; - U8_NEXT_UNSAFE(zPattern, iPattern, uPattern); - assert(uPattern!=0); + SQLITE_ICU_READ_UTF8(zPattern, uPattern); + if( uPattern==0 ) break; /* There are now 4 possibilities: ** @@ -145120,28 +166881,28 @@ static int icuLikeCompare( ** MATCH_ALL. For each MATCH_ONE, skip one character in the ** test string. */ - while( (c=zPattern[iPattern]) == MATCH_ALL || c == MATCH_ONE ){ + while( (c=*zPattern) == MATCH_ALL || c == MATCH_ONE ){ if( c==MATCH_ONE ){ - if( zString[iString]==0 ) return 0; - U8_FWD_1_UNSAFE(zString, iString); + if( *zString==0 ) return 0; + SQLITE_ICU_SKIP_UTF8(zString); } - iPattern++; + zPattern++; } - if( zPattern[iPattern]==0 ) return 1; + if( *zPattern==0 ) return 1; - while( zString[iString] ){ - if( icuLikeCompare(&zPattern[iPattern], &zString[iString], uEsc) ){ + while( *zString ){ + if( icuLikeCompare(zPattern, zString, uEsc) ){ return 1; } - U8_FWD_1_UNSAFE(zString, iString); + SQLITE_ICU_SKIP_UTF8(zString); } return 0; }else if( !prevEscape && uPattern==MATCH_ONE ){ /* Case 2. */ - if( zString[iString]==0 ) return 0; - U8_FWD_1_UNSAFE(zString, iString); + if( *zString==0 ) return 0; + SQLITE_ICU_SKIP_UTF8(zString); }else if( !prevEscape && uPattern==uEsc){ /* Case 3. */ @@ -145150,7 +166911,7 @@ static int icuLikeCompare( }else{ /* Case 4. */ UChar32 uString; - U8_NEXT_UNSAFE(zString, iString, uString); + SQLITE_ICU_READ_UTF8(zString, uString); uString = u_foldCase(uString, U_FOLD_CASE_DEFAULT); uPattern = u_foldCase(uPattern, U_FOLD_CASE_DEFAULT); if( uString!=uPattern ){ @@ -145160,7 +166921,7 @@ static int icuLikeCompare( } } - return zString[iString]==0; + return *zString==0; } /* @@ -145340,20 +167101,22 @@ static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ ** of upper() or lower(). ** ** lower('I', 'en_us') -> 'i' -** lower('I', 'tr_tr') -> 'ı' (small dotless i) +** lower('I', 'tr_tr') -> '\u131' (small dotless i) ** ** http://www.icu-project.org/userguide/posix.html#case_mappings */ static void icuCaseFunc16(sqlite3_context *p, int nArg, sqlite3_value **apArg){ - const UChar *zInput; - UChar *zOutput; - int nInput; - int nOutput; - - UErrorCode status = U_ZERO_ERROR; + const UChar *zInput; /* Pointer to input string */ + UChar *zOutput = 0; /* Pointer to output buffer */ + int nInput; /* Size of utf-16 input string in bytes */ + int nOut; /* Size of output buffer in bytes */ + int cnt; + int bToUpper; /* True for toupper(), false for tolower() */ + UErrorCode status; const char *zLocale = 0; assert(nArg==1 || nArg==2); + bToUpper = (sqlite3_user_data(p)!=0); if( nArg==2 ){ zLocale = (const char *)sqlite3_value_text(apArg[1]); } @@ -145362,26 +167125,38 @@ static void icuCaseFunc16(sqlite3_context *p, int nArg, sqlite3_value **apArg){ if( !zInput ){ return; } - nInput = sqlite3_value_bytes16(apArg[0]); - - nOutput = nInput * 2 + 2; - zOutput = sqlite3_malloc(nOutput); - if( !zOutput ){ + nOut = nInput = sqlite3_value_bytes16(apArg[0]); + if( nOut==0 ){ + sqlite3_result_text16(p, "", 0, SQLITE_STATIC); return; } - if( sqlite3_user_data(p) ){ - u_strToUpper(zOutput, nOutput/2, zInput, nInput/2, zLocale, &status); - }else{ - u_strToLower(zOutput, nOutput/2, zInput, nInput/2, zLocale, &status); - } + for(cnt=0; cnt<2; cnt++){ + UChar *zNew = sqlite3_realloc(zOutput, nOut); + if( zNew==0 ){ + sqlite3_free(zOutput); + sqlite3_result_error_nomem(p); + return; + } + zOutput = zNew; + status = U_ZERO_ERROR; + if( bToUpper ){ + nOut = 2*u_strToUpper(zOutput,nOut/2,zInput,nInput/2,zLocale,&status); + }else{ + nOut = 2*u_strToLower(zOutput,nOut/2,zInput,nInput/2,zLocale,&status); + } - if( !U_SUCCESS(status) ){ - icuFunctionError(p, "u_strToLower()/u_strToUpper", status); + if( U_SUCCESS(status) ){ + sqlite3_result_text16(p, zOutput, nOut, xFree); + }else if( status==U_BUFFER_OVERFLOW_ERROR ){ + assert( cnt==0 ); + continue; + }else{ + icuFunctionError(p, bToUpper ? "u_strToUpper" : "u_strToLower", status); + } return; } - - sqlite3_result_text16(p, zOutput, -1, xFree); + assert( 0 ); /* Unreachable */ } /* @@ -145442,6 +167217,7 @@ static void icuLoadCollation( int rc; /* Return code from sqlite3_create_collation_x() */ assert(nArg==2); + (void)nArg; /* Unused parameter */ zLocale = (const char *)sqlite3_value_text(apArg[0]); zName = (const char *)sqlite3_value_text(apArg[1]); @@ -145469,38 +167245,36 @@ static void icuLoadCollation( ** Register the ICU extension functions with database db. */ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db){ - struct IcuScalar { + static const struct IcuScalar { const char *zName; /* Function name */ - int nArg; /* Number of arguments */ - int enc; /* Optimal text encoding */ - void *pContext; /* sqlite3_user_data() context */ + unsigned char nArg; /* Number of arguments */ + unsigned short enc; /* Optimal text encoding */ + unsigned char iContext; /* sqlite3_user_data() context */ void (*xFunc)(sqlite3_context*,int,sqlite3_value**); } scalars[] = { - {"regexp", 2, SQLITE_ANY, 0, icuRegexpFunc}, - - {"lower", 1, SQLITE_UTF16, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF16, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF16, (void*)1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF16, (void*)1, icuCaseFunc16}, - - {"lower", 1, SQLITE_UTF8, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF8, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF8, (void*)1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF8, (void*)1, icuCaseFunc16}, - - {"like", 2, SQLITE_UTF8, 0, icuLikeFunc}, - {"like", 3, SQLITE_UTF8, 0, icuLikeFunc}, - - {"icu_load_collation", 2, SQLITE_UTF8, (void*)db, icuLoadCollation}, + {"icu_load_collation", 2, SQLITE_UTF8, 1, icuLoadCollation}, + {"regexp", 2, SQLITE_ANY|SQLITE_DETERMINISTIC, 0, icuRegexpFunc}, + {"lower", 1, SQLITE_UTF16|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, + {"lower", 2, SQLITE_UTF16|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, + {"upper", 1, SQLITE_UTF16|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, + {"upper", 2, SQLITE_UTF16|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, + {"lower", 1, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, + {"lower", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuCaseFunc16}, + {"upper", 1, SQLITE_UTF8|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, + {"upper", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 1, icuCaseFunc16}, + {"like", 2, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuLikeFunc}, + {"like", 3, SQLITE_UTF8|SQLITE_DETERMINISTIC, 0, icuLikeFunc}, }; - int rc = SQLITE_OK; int i; + for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){ - struct IcuScalar *p = &scalars[i]; + const struct IcuScalar *p = &scalars[i]; rc = sqlite3_create_function( - db, p->zName, p->nArg, p->enc, p->pContext, p->xFunc, 0, 0 + db, p->zName, p->nArg, p->enc, + p->iContext ? (void*)db : (void*)0, + p->xFunc, 0, 0 ); } @@ -145538,11 +167312,13 @@ SQLITE_API int sqlite3_icu_init( ************************************************************************* ** This file implements a tokenizer for fts3 based on the ICU library. */ +/* #include "fts3Int.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) #ifdef SQLITE_ENABLE_ICU /* #include */ /* #include */ +/* #include "fts3_tokenizer.h" */ #include /* #include */ @@ -145765,12 +167541,13 @@ static int icuNext( ** The set of routines that implement the simple tokenizer */ static const sqlite3_tokenizer_module icuTokenizerModule = { - 0, /* iVersion */ - icuCreate, /* xCreate */ - icuDestroy, /* xCreate */ - icuOpen, /* xOpen */ - icuClose, /* xClose */ - icuNext, /* xNext */ + 0, /* iVersion */ + icuCreate, /* xCreate */ + icuDestroy, /* xCreate */ + icuOpen, /* xOpen */ + icuClose, /* xClose */ + icuNext, /* xNext */ + 0, /* xLanguageid */ }; /* @@ -145786,3 +167563,33876 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule( #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ /************** End of fts3_icu.c ********************************************/ +/************** Begin file sqlite3rbu.c **************************************/ +/* +** 2014 August 30 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** +** OVERVIEW +** +** The RBU extension requires that the RBU update be packaged as an +** SQLite database. The tables it expects to find are described in +** sqlite3rbu.h. Essentially, for each table xyz in the target database +** that the user wishes to write to, a corresponding data_xyz table is +** created in the RBU database and populated with one row for each row to +** update, insert or delete from the target table. +** +** The update proceeds in three stages: +** +** 1) The database is updated. The modified database pages are written +** to a *-oal file. A *-oal file is just like a *-wal file, except +** that it is named "-oal" instead of "-wal". +** Because regular SQLite clients do not look for file named +** "-oal", they go on using the original database in +** rollback mode while the *-oal file is being generated. +** +** During this stage RBU does not update the database by writing +** directly to the target tables. Instead it creates "imposter" +** tables using the SQLITE_TESTCTRL_IMPOSTER interface that it uses +** to update each b-tree individually. All updates required by each +** b-tree are completed before moving on to the next, and all +** updates are done in sorted key order. +** +** 2) The "-oal" file is moved to the equivalent "-wal" +** location using a call to rename(2). Before doing this the RBU +** module takes an EXCLUSIVE lock on the database file, ensuring +** that there are no other active readers. +** +** Once the EXCLUSIVE lock is released, any other database readers +** detect the new *-wal file and read the database in wal mode. At +** this point they see the new version of the database - including +** the updates made as part of the RBU update. +** +** 3) The new *-wal file is checkpointed. This proceeds in the same way +** as a regular database checkpoint, except that a single frame is +** checkpointed each time sqlite3rbu_step() is called. If the RBU +** handle is closed before the entire *-wal file is checkpointed, +** the checkpoint progress is saved in the RBU database and the +** checkpoint can be resumed by another RBU client at some point in +** the future. +** +** POTENTIAL PROBLEMS +** +** The rename() call might not be portable. And RBU is not currently +** syncing the directory after renaming the file. +** +** When state is saved, any commit to the *-oal file and the commit to +** the RBU update database are not atomic. So if the power fails at the +** wrong moment they might get out of sync. As the main database will be +** committed before the RBU update database this will likely either just +** pass unnoticed, or result in SQLITE_CONSTRAINT errors (due to UNIQUE +** constraint violations). +** +** If some client does modify the target database mid RBU update, or some +** other error occurs, the RBU extension will keep throwing errors. It's +** not really clear how to get out of this state. The system could just +** by delete the RBU update database and *-oal file and have the device +** download the update again and start over. +** +** At present, for an UPDATE, both the new.* and old.* records are +** collected in the rbu_xyz table. And for both UPDATEs and DELETEs all +** fields are collected. This means we're probably writing a lot more +** data to disk when saving the state of an ongoing update to the RBU +** update database than is strictly necessary. +** +*/ + +/* #include */ +/* #include */ +/* #include */ + +/* #include "sqlite3.h" */ + +#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_RBU) +/************** Include sqlite3rbu.h in the middle of sqlite3rbu.c ***********/ +/************** Begin file sqlite3rbu.h **************************************/ +/* +** 2014 August 30 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file contains the public interface for the RBU extension. +*/ + +/* +** SUMMARY +** +** Writing a transaction containing a large number of operations on +** b-tree indexes that are collectively larger than the available cache +** memory can be very inefficient. +** +** The problem is that in order to update a b-tree, the leaf page (at least) +** containing the entry being inserted or deleted must be modified. If the +** working set of leaves is larger than the available cache memory, then a +** single leaf that is modified more than once as part of the transaction +** may be loaded from or written to the persistent media multiple times. +** Additionally, because the index updates are likely to be applied in +** random order, access to pages within the database is also likely to be in +** random order, which is itself quite inefficient. +** +** One way to improve the situation is to sort the operations on each index +** by index key before applying them to the b-tree. This leads to an IO +** pattern that resembles a single linear scan through the index b-tree, +** and all but guarantees each modified leaf page is loaded and stored +** exactly once. SQLite uses this trick to improve the performance of +** CREATE INDEX commands. This extension allows it to be used to improve +** the performance of large transactions on existing databases. +** +** Additionally, this extension allows the work involved in writing the +** large transaction to be broken down into sub-transactions performed +** sequentially by separate processes. This is useful if the system cannot +** guarantee that a single update process will run for long enough to apply +** the entire update, for example because the update is being applied on a +** mobile device that is frequently rebooted. Even after the writer process +** has committed one or more sub-transactions, other database clients continue +** to read from the original database snapshot. In other words, partially +** applied transactions are not visible to other clients. +** +** "RBU" stands for "Resumable Bulk Update". As in a large database update +** transmitted via a wireless network to a mobile device. A transaction +** applied using this extension is hence refered to as an "RBU update". +** +** +** LIMITATIONS +** +** An "RBU update" transaction is subject to the following limitations: +** +** * The transaction must consist of INSERT, UPDATE and DELETE operations +** only. +** +** * INSERT statements may not use any default values. +** +** * UPDATE and DELETE statements must identify their target rows by +** non-NULL PRIMARY KEY values. Rows with NULL values stored in PRIMARY +** KEY fields may not be updated or deleted. If the table being written +** has no PRIMARY KEY, affected rows must be identified by rowid. +** +** * UPDATE statements may not modify PRIMARY KEY columns. +** +** * No triggers will be fired. +** +** * No foreign key violations are detected or reported. +** +** * CHECK constraints are not enforced. +** +** * No constraint handling mode except for "OR ROLLBACK" is supported. +** +** +** PREPARATION +** +** An "RBU update" is stored as a separate SQLite database. A database +** containing an RBU update is an "RBU database". For each table in the +** target database to be updated, the RBU database should contain a table +** named "data_" containing the same set of columns as the +** target table, and one more - "rbu_control". The data_% table should +** have no PRIMARY KEY or UNIQUE constraints, but each column should have +** the same type as the corresponding column in the target database. +** The "rbu_control" column should have no type at all. For example, if +** the target database contains: +** +** CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT, c UNIQUE); +** +** Then the RBU database should contain: +** +** CREATE TABLE data_t1(a INTEGER, b TEXT, c, rbu_control); +** +** The order of the columns in the data_% table does not matter. +** +** Instead of a regular table, the RBU database may also contain virtual +** tables or view named using the data_ naming scheme. +** +** Instead of the plain data_ naming scheme, RBU database tables +** may also be named data_, where is any sequence +** of zero or more numeric characters (0-9). This can be significant because +** tables within the RBU database are always processed in order sorted by +** name. By judicious selection of the portion of the names +** of the RBU tables the user can therefore control the order in which they +** are processed. This can be useful, for example, to ensure that "external +** content" FTS4 tables are updated before their underlying content tables. +** +** If the target database table is a virtual table or a table that has no +** PRIMARY KEY declaration, the data_% table must also contain a column +** named "rbu_rowid". This column is mapped to the tables implicit primary +** key column - "rowid". Virtual tables for which the "rowid" column does +** not function like a primary key value cannot be updated using RBU. For +** example, if the target db contains either of the following: +** +** CREATE VIRTUAL TABLE x1 USING fts3(a, b); +** CREATE TABLE x1(a, b) +** +** then the RBU database should contain: +** +** CREATE TABLE data_x1(a, b, rbu_rowid, rbu_control); +** +** All non-hidden columns (i.e. all columns matched by "SELECT *") of the +** target table must be present in the input table. For virtual tables, +** hidden columns are optional - they are updated by RBU if present in +** the input table, or not otherwise. For example, to write to an fts4 +** table with a hidden languageid column such as: +** +** CREATE VIRTUAL TABLE ft1 USING fts4(a, b, languageid='langid'); +** +** Either of the following input table schemas may be used: +** +** CREATE TABLE data_ft1(a, b, langid, rbu_rowid, rbu_control); +** CREATE TABLE data_ft1(a, b, rbu_rowid, rbu_control); +** +** For each row to INSERT into the target database as part of the RBU +** update, the corresponding data_% table should contain a single record +** with the "rbu_control" column set to contain integer value 0. The +** other columns should be set to the values that make up the new record +** to insert. +** +** If the target database table has an INTEGER PRIMARY KEY, it is not +** possible to insert a NULL value into the IPK column. Attempting to +** do so results in an SQLITE_MISMATCH error. +** +** For each row to DELETE from the target database as part of the RBU +** update, the corresponding data_% table should contain a single record +** with the "rbu_control" column set to contain integer value 1. The +** real primary key values of the row to delete should be stored in the +** corresponding columns of the data_% table. The values stored in the +** other columns are not used. +** +** For each row to UPDATE from the target database as part of the RBU +** update, the corresponding data_% table should contain a single record +** with the "rbu_control" column set to contain a value of type text. +** The real primary key values identifying the row to update should be +** stored in the corresponding columns of the data_% table row, as should +** the new values of all columns being update. The text value in the +** "rbu_control" column must contain the same number of characters as +** there are columns in the target database table, and must consist entirely +** of 'x' and '.' characters (or in some special cases 'd' - see below). For +** each column that is being updated, the corresponding character is set to +** 'x'. For those that remain as they are, the corresponding character of the +** rbu_control value should be set to '.'. For example, given the tables +** above, the update statement: +** +** UPDATE t1 SET c = 'usa' WHERE a = 4; +** +** is represented by the data_t1 row created by: +** +** INSERT INTO data_t1(a, b, c, rbu_control) VALUES(4, NULL, 'usa', '..x'); +** +** Instead of an 'x' character, characters of the rbu_control value specified +** for UPDATEs may also be set to 'd'. In this case, instead of updating the +** target table with the value stored in the corresponding data_% column, the +** user-defined SQL function "rbu_delta()" is invoked and the result stored in +** the target table column. rbu_delta() is invoked with two arguments - the +** original value currently stored in the target table column and the +** value specified in the data_xxx table. +** +** For example, this row: +** +** INSERT INTO data_t1(a, b, c, rbu_control) VALUES(4, NULL, 'usa', '..d'); +** +** is similar to an UPDATE statement such as: +** +** UPDATE t1 SET c = rbu_delta(c, 'usa') WHERE a = 4; +** +** Finally, if an 'f' character appears in place of a 'd' or 's' in an +** ota_control string, the contents of the data_xxx table column is assumed +** to be a "fossil delta" - a patch to be applied to a blob value in the +** format used by the fossil source-code management system. In this case +** the existing value within the target database table must be of type BLOB. +** It is replaced by the result of applying the specified fossil delta to +** itself. +** +** If the target database table is a virtual table or a table with no PRIMARY +** KEY, the rbu_control value should not include a character corresponding +** to the rbu_rowid value. For example, this: +** +** INSERT INTO data_ft1(a, b, rbu_rowid, rbu_control) +** VALUES(NULL, 'usa', 12, '.x'); +** +** causes a result similar to: +** +** UPDATE ft1 SET b = 'usa' WHERE rowid = 12; +** +** The data_xxx tables themselves should have no PRIMARY KEY declarations. +** However, RBU is more efficient if reading the rows in from each data_xxx +** table in "rowid" order is roughly the same as reading them sorted by +** the PRIMARY KEY of the corresponding target database table. In other +** words, rows should be sorted using the destination table PRIMARY KEY +** fields before they are inserted into the data_xxx tables. +** +** USAGE +** +** The API declared below allows an application to apply an RBU update +** stored on disk to an existing target database. Essentially, the +** application: +** +** 1) Opens an RBU handle using the sqlite3rbu_open() function. +** +** 2) Registers any required virtual table modules with the database +** handle returned by sqlite3rbu_db(). Also, if required, register +** the rbu_delta() implementation. +** +** 3) Calls the sqlite3rbu_step() function one or more times on +** the new handle. Each call to sqlite3rbu_step() performs a single +** b-tree operation, so thousands of calls may be required to apply +** a complete update. +** +** 4) Calls sqlite3rbu_close() to close the RBU update handle. If +** sqlite3rbu_step() has been called enough times to completely +** apply the update to the target database, then the RBU database +** is marked as fully applied. Otherwise, the state of the RBU +** update application is saved in the RBU database for later +** resumption. +** +** See comments below for more detail on APIs. +** +** If an update is only partially applied to the target database by the +** time sqlite3rbu_close() is called, various state information is saved +** within the RBU database. This allows subsequent processes to automatically +** resume the RBU update from where it left off. +** +** To remove all RBU extension state information, returning an RBU database +** to its original contents, it is sufficient to drop all tables that begin +** with the prefix "rbu_" +** +** DATABASE LOCKING +** +** An RBU update may not be applied to a database in WAL mode. Attempting +** to do so is an error (SQLITE_ERROR). +** +** While an RBU handle is open, a SHARED lock may be held on the target +** database file. This means it is possible for other clients to read the +** database, but not to write it. +** +** If an RBU update is started and then suspended before it is completed, +** then an external client writes to the database, then attempting to resume +** the suspended RBU update is also an error (SQLITE_BUSY). +*/ + +#ifndef _SQLITE3RBU_H +#define _SQLITE3RBU_H + +/* #include "sqlite3.h" ** Required for error code definitions ** */ + +#if 0 +extern "C" { +#endif + +typedef struct sqlite3rbu sqlite3rbu; + +/* +** Open an RBU handle. +** +** Argument zTarget is the path to the target database. Argument zRbu is +** the path to the RBU database. Each call to this function must be matched +** by a call to sqlite3rbu_close(). When opening the databases, RBU passes +** the SQLITE_CONFIG_URI flag to sqlite3_open_v2(). So if either zTarget +** or zRbu begin with "file:", it will be interpreted as an SQLite +** database URI, not a regular file name. +** +** If the zState argument is passed a NULL value, the RBU extension stores +** the current state of the update (how many rows have been updated, which +** indexes are yet to be updated etc.) within the RBU database itself. This +** can be convenient, as it means that the RBU application does not need to +** organize removing a separate state file after the update is concluded. +** Or, if zState is non-NULL, it must be a path to a database file in which +** the RBU extension can store the state of the update. +** +** When resuming an RBU update, the zState argument must be passed the same +** value as when the RBU update was started. +** +** Once the RBU update is finished, the RBU extension does not +** automatically remove any zState database file, even if it created it. +** +** By default, RBU uses the default VFS to access the files on disk. To +** use a VFS other than the default, an SQLite "file:" URI containing a +** "vfs=..." option may be passed as the zTarget option. +** +** IMPORTANT NOTE FOR ZIPVFS USERS: The RBU extension works with all of +** SQLite's built-in VFSs, including the multiplexor VFS. However it does +** not work out of the box with zipvfs. Refer to the comment describing +** the zipvfs_create_vfs() API below for details on using RBU with zipvfs. +*/ +SQLITE_API sqlite3rbu *sqlite3rbu_open( + const char *zTarget, + const char *zRbu, + const char *zState +); + +/* +** Open an RBU handle to perform an RBU vacuum on database file zTarget. +** An RBU vacuum is similar to SQLite's built-in VACUUM command, except +** that it can be suspended and resumed like an RBU update. +** +** The second argument to this function identifies a database in which +** to store the state of the RBU vacuum operation if it is suspended. The +** first time sqlite3rbu_vacuum() is called, to start an RBU vacuum +** operation, the state database should either not exist or be empty +** (contain no tables). If an RBU vacuum is suspended by calling +** sqlite3rbu_close() on the RBU handle before sqlite3rbu_step() has +** returned SQLITE_DONE, the vacuum state is stored in the state database. +** The vacuum can be resumed by calling this function to open a new RBU +** handle specifying the same target and state databases. +** +** If the second argument passed to this function is NULL, then the +** name of the state database is "-vacuum", where +** is the name of the target database file. In this case, on UNIX, if the +** state database is not already present in the file-system, it is created +** with the same permissions as the target db is made. +** +** This function does not delete the state database after an RBU vacuum +** is completed, even if it created it. However, if the call to +** sqlite3rbu_close() returns any value other than SQLITE_OK, the contents +** of the state tables within the state database are zeroed. This way, +** the next call to sqlite3rbu_vacuum() opens a handle that starts a +** new RBU vacuum operation. +** +** As with sqlite3rbu_open(), Zipvfs users should rever to the comment +** describing the sqlite3rbu_create_vfs() API function below for +** a description of the complications associated with using RBU with +** zipvfs databases. +*/ +SQLITE_API sqlite3rbu *sqlite3rbu_vacuum( + const char *zTarget, + const char *zState +); + +/* +** Internally, each RBU connection uses a separate SQLite database +** connection to access the target and rbu update databases. This +** API allows the application direct access to these database handles. +** +** The first argument passed to this function must be a valid, open, RBU +** handle. The second argument should be passed zero to access the target +** database handle, or non-zero to access the rbu update database handle. +** Accessing the underlying database handles may be useful in the +** following scenarios: +** +** * If any target tables are virtual tables, it may be necessary to +** call sqlite3_create_module() on the target database handle to +** register the required virtual table implementations. +** +** * If the data_xxx tables in the RBU source database are virtual +** tables, the application may need to call sqlite3_create_module() on +** the rbu update db handle to any required virtual table +** implementations. +** +** * If the application uses the "rbu_delta()" feature described above, +** it must use sqlite3_create_function() or similar to register the +** rbu_delta() implementation with the target database handle. +** +** If an error has occurred, either while opening or stepping the RBU object, +** this function may return NULL. The error code and message may be collected +** when sqlite3rbu_close() is called. +** +** Database handles returned by this function remain valid until the next +** call to any sqlite3rbu_xxx() function other than sqlite3rbu_db(). +*/ +SQLITE_API sqlite3 *sqlite3rbu_db(sqlite3rbu*, int bRbu); + +/* +** Do some work towards applying the RBU update to the target db. +** +** Return SQLITE_DONE if the update has been completely applied, or +** SQLITE_OK if no error occurs but there remains work to do to apply +** the RBU update. If an error does occur, some other error code is +** returned. +** +** Once a call to sqlite3rbu_step() has returned a value other than +** SQLITE_OK, all subsequent calls on the same RBU handle are no-ops +** that immediately return the same value. +*/ +SQLITE_API int sqlite3rbu_step(sqlite3rbu *pRbu); + +/* +** Force RBU to save its state to disk. +** +** If a power failure or application crash occurs during an update, following +** system recovery RBU may resume the update from the point at which the state +** was last saved. In other words, from the most recent successful call to +** sqlite3rbu_close() or this function. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +SQLITE_API int sqlite3rbu_savestate(sqlite3rbu *pRbu); + +/* +** Close an RBU handle. +** +** If the RBU update has been completely applied, mark the RBU database +** as fully applied. Otherwise, assuming no error has occurred, save the +** current state of the RBU update appliation to the RBU database. +** +** If an error has already occurred as part of an sqlite3rbu_step() +** or sqlite3rbu_open() call, or if one occurs within this function, an +** SQLite error code is returned. Additionally, *pzErrmsg may be set to +** point to a buffer containing a utf-8 formatted English language error +** message. It is the responsibility of the caller to eventually free any +** such buffer using sqlite3_free(). +** +** Otherwise, if no error occurs, this function returns SQLITE_OK if the +** update has been partially applied, or SQLITE_DONE if it has been +** completely applied. +*/ +SQLITE_API int sqlite3rbu_close(sqlite3rbu *pRbu, char **pzErrmsg); + +/* +** Return the total number of key-value operations (inserts, deletes or +** updates) that have been performed on the target database since the +** current RBU update was started. +*/ +SQLITE_API sqlite3_int64 sqlite3rbu_progress(sqlite3rbu *pRbu); + +/* +** Obtain permyriadage (permyriadage is to 10000 as percentage is to 100) +** progress indications for the two stages of an RBU update. This API may +** be useful for driving GUI progress indicators and similar. +** +** An RBU update is divided into two stages: +** +** * Stage 1, in which changes are accumulated in an oal/wal file, and +** * Stage 2, in which the contents of the wal file are copied into the +** main database. +** +** The update is visible to non-RBU clients during stage 2. During stage 1 +** non-RBU reader clients may see the original database. +** +** If this API is called during stage 2 of the update, output variable +** (*pnOne) is set to 10000 to indicate that stage 1 has finished and (*pnTwo) +** to a value between 0 and 10000 to indicate the permyriadage progress of +** stage 2. A value of 5000 indicates that stage 2 is half finished, +** 9000 indicates that it is 90% finished, and so on. +** +** If this API is called during stage 1 of the update, output variable +** (*pnTwo) is set to 0 to indicate that stage 2 has not yet started. The +** value to which (*pnOne) is set depends on whether or not the RBU +** database contains an "rbu_count" table. The rbu_count table, if it +** exists, must contain the same columns as the following: +** +** CREATE TABLE rbu_count(tbl TEXT PRIMARY KEY, cnt INTEGER) WITHOUT ROWID; +** +** There must be one row in the table for each source (data_xxx) table within +** the RBU database. The 'tbl' column should contain the name of the source +** table. The 'cnt' column should contain the number of rows within the +** source table. +** +** If the rbu_count table is present and populated correctly and this +** API is called during stage 1, the *pnOne output variable is set to the +** permyriadage progress of the same stage. If the rbu_count table does +** not exist, then (*pnOne) is set to -1 during stage 1. If the rbu_count +** table exists but is not correctly populated, the value of the *pnOne +** output variable during stage 1 is undefined. +*/ +SQLITE_API void sqlite3rbu_bp_progress(sqlite3rbu *pRbu, int *pnOne, int *pnTwo); + +/* +** Obtain an indication as to the current stage of an RBU update or vacuum. +** This function always returns one of the SQLITE_RBU_STATE_XXX constants +** defined in this file. Return values should be interpreted as follows: +** +** SQLITE_RBU_STATE_OAL: +** RBU is currently building a *-oal file. The next call to sqlite3rbu_step() +** may either add further data to the *-oal file, or compute data that will +** be added by a subsequent call. +** +** SQLITE_RBU_STATE_MOVE: +** RBU has finished building the *-oal file. The next call to sqlite3rbu_step() +** will move the *-oal file to the equivalent *-wal path. If the current +** operation is an RBU update, then the updated version of the database +** file will become visible to ordinary SQLite clients following the next +** call to sqlite3rbu_step(). +** +** SQLITE_RBU_STATE_CHECKPOINT: +** RBU is currently performing an incremental checkpoint. The next call to +** sqlite3rbu_step() will copy a page of data from the *-wal file into +** the target database file. +** +** SQLITE_RBU_STATE_DONE: +** The RBU operation has finished. Any subsequent calls to sqlite3rbu_step() +** will immediately return SQLITE_DONE. +** +** SQLITE_RBU_STATE_ERROR: +** An error has occurred. Any subsequent calls to sqlite3rbu_step() will +** immediately return the SQLite error code associated with the error. +*/ +#define SQLITE_RBU_STATE_OAL 1 +#define SQLITE_RBU_STATE_MOVE 2 +#define SQLITE_RBU_STATE_CHECKPOINT 3 +#define SQLITE_RBU_STATE_DONE 4 +#define SQLITE_RBU_STATE_ERROR 5 + +SQLITE_API int sqlite3rbu_state(sqlite3rbu *pRbu); + +/* +** Create an RBU VFS named zName that accesses the underlying file-system +** via existing VFS zParent. Or, if the zParent parameter is passed NULL, +** then the new RBU VFS uses the default system VFS to access the file-system. +** The new object is registered as a non-default VFS with SQLite before +** returning. +** +** Part of the RBU implementation uses a custom VFS object. Usually, this +** object is created and deleted automatically by RBU. +** +** The exception is for applications that also use zipvfs. In this case, +** the custom VFS must be explicitly created by the user before the RBU +** handle is opened. The RBU VFS should be installed so that the zipvfs +** VFS uses the RBU VFS, which in turn uses any other VFS layers in use +** (for example multiplexor) to access the file-system. For example, +** to assemble an RBU enabled VFS stack that uses both zipvfs and +** multiplexor (error checking omitted): +** +** // Create a VFS named "multiplex" (not the default). +** sqlite3_multiplex_initialize(0, 0); +** +** // Create an rbu VFS named "rbu" that uses multiplexor. If the +** // second argument were replaced with NULL, the "rbu" VFS would +** // access the file-system via the system default VFS, bypassing the +** // multiplexor. +** sqlite3rbu_create_vfs("rbu", "multiplex"); +** +** // Create a zipvfs VFS named "zipvfs" that uses rbu. +** zipvfs_create_vfs_v3("zipvfs", "rbu", 0, xCompressorAlgorithmDetector); +** +** // Make zipvfs the default VFS. +** sqlite3_vfs_register(sqlite3_vfs_find("zipvfs"), 1); +** +** Because the default VFS created above includes a RBU functionality, it +** may be used by RBU clients. Attempting to use RBU with a zipvfs VFS stack +** that does not include the RBU layer results in an error. +** +** The overhead of adding the "rbu" VFS to the system is negligible for +** non-RBU users. There is no harm in an application accessing the +** file-system via "rbu" all the time, even if it only uses RBU functionality +** occasionally. +*/ +SQLITE_API int sqlite3rbu_create_vfs(const char *zName, const char *zParent); + +/* +** Deregister and destroy an RBU vfs created by an earlier call to +** sqlite3rbu_create_vfs(). +** +** VFS objects are not reference counted. If a VFS object is destroyed +** before all database handles that use it have been closed, the results +** are undefined. +*/ +SQLITE_API void sqlite3rbu_destroy_vfs(const char *zName); + +#if 0 +} /* end of the 'extern "C"' block */ +#endif + +#endif /* _SQLITE3RBU_H */ + +/************** End of sqlite3rbu.h ******************************************/ +/************** Continuing where we left off in sqlite3rbu.c *****************/ + +#if defined(_WIN32_WCE) +/* #include "windows.h" */ +#endif + +/* Maximum number of prepared UPDATE statements held by this module */ +#define SQLITE_RBU_UPDATE_CACHESIZE 16 + +/* +** Swap two objects of type TYPE. +*/ +#if !defined(SQLITE_AMALGAMATION) +# define SWAP(TYPE,A,B) {TYPE t=A; A=B; B=t;} +#endif + +/* +** The rbu_state table is used to save the state of a partially applied +** update so that it can be resumed later. The table consists of integer +** keys mapped to values as follows: +** +** RBU_STATE_STAGE: +** May be set to integer values 1, 2, 4 or 5. As follows: +** 1: the *-rbu file is currently under construction. +** 2: the *-rbu file has been constructed, but not yet moved +** to the *-wal path. +** 4: the checkpoint is underway. +** 5: the rbu update has been checkpointed. +** +** RBU_STATE_TBL: +** Only valid if STAGE==1. The target database name of the table +** currently being written. +** +** RBU_STATE_IDX: +** Only valid if STAGE==1. The target database name of the index +** currently being written, or NULL if the main table is currently being +** updated. +** +** RBU_STATE_ROW: +** Only valid if STAGE==1. Number of rows already processed for the current +** table/index. +** +** RBU_STATE_PROGRESS: +** Trbul number of sqlite3rbu_step() calls made so far as part of this +** rbu update. +** +** RBU_STATE_CKPT: +** Valid if STAGE==4. The 64-bit checksum associated with the wal-index +** header created by recovering the *-wal file. This is used to detect +** cases when another client appends frames to the *-wal file in the +** middle of an incremental checkpoint (an incremental checkpoint cannot +** be continued if this happens). +** +** RBU_STATE_COOKIE: +** Valid if STAGE==1. The current change-counter cookie value in the +** target db file. +** +** RBU_STATE_OALSZ: +** Valid if STAGE==1. The size in bytes of the *-oal file. +*/ +#define RBU_STATE_STAGE 1 +#define RBU_STATE_TBL 2 +#define RBU_STATE_IDX 3 +#define RBU_STATE_ROW 4 +#define RBU_STATE_PROGRESS 5 +#define RBU_STATE_CKPT 6 +#define RBU_STATE_COOKIE 7 +#define RBU_STATE_OALSZ 8 +#define RBU_STATE_PHASEONESTEP 9 + +#define RBU_STAGE_OAL 1 +#define RBU_STAGE_MOVE 2 +#define RBU_STAGE_CAPTURE 3 +#define RBU_STAGE_CKPT 4 +#define RBU_STAGE_DONE 5 + + +#define RBU_CREATE_STATE \ + "CREATE TABLE IF NOT EXISTS %s.rbu_state(k INTEGER PRIMARY KEY, v)" + +typedef struct RbuFrame RbuFrame; +typedef struct RbuObjIter RbuObjIter; +typedef struct RbuState RbuState; +typedef struct rbu_vfs rbu_vfs; +typedef struct rbu_file rbu_file; +typedef struct RbuUpdateStmt RbuUpdateStmt; + +#if !defined(SQLITE_AMALGAMATION) +typedef unsigned int u32; +typedef unsigned short u16; +typedef unsigned char u8; +typedef sqlite3_int64 i64; +#endif + +/* +** These values must match the values defined in wal.c for the equivalent +** locks. These are not magic numbers as they are part of the SQLite file +** format. +*/ +#define WAL_LOCK_WRITE 0 +#define WAL_LOCK_CKPT 1 +#define WAL_LOCK_READ0 3 + +#define SQLITE_FCNTL_RBUCNT 5149216 + +/* +** A structure to store values read from the rbu_state table in memory. +*/ +struct RbuState { + int eStage; + char *zTbl; + char *zIdx; + i64 iWalCksum; + int nRow; + i64 nProgress; + u32 iCookie; + i64 iOalSz; + i64 nPhaseOneStep; +}; + +struct RbuUpdateStmt { + char *zMask; /* Copy of update mask used with pUpdate */ + sqlite3_stmt *pUpdate; /* Last update statement (or NULL) */ + RbuUpdateStmt *pNext; +}; + +/* +** An iterator of this type is used to iterate through all objects in +** the target database that require updating. For each such table, the +** iterator visits, in order: +** +** * the table itself, +** * each index of the table (zero or more points to visit), and +** * a special "cleanup table" state. +** +** abIndexed: +** If the table has no indexes on it, abIndexed is set to NULL. Otherwise, +** it points to an array of flags nTblCol elements in size. The flag is +** set for each column that is either a part of the PK or a part of an +** index. Or clear otherwise. +** +*/ +struct RbuObjIter { + sqlite3_stmt *pTblIter; /* Iterate through tables */ + sqlite3_stmt *pIdxIter; /* Index iterator */ + int nTblCol; /* Size of azTblCol[] array */ + char **azTblCol; /* Array of unquoted target column names */ + char **azTblType; /* Array of target column types */ + int *aiSrcOrder; /* src table col -> target table col */ + u8 *abTblPk; /* Array of flags, set on target PK columns */ + u8 *abNotNull; /* Array of flags, set on NOT NULL columns */ + u8 *abIndexed; /* Array of flags, set on indexed & PK cols */ + int eType; /* Table type - an RBU_PK_XXX value */ + + /* Output variables. zTbl==0 implies EOF. */ + int bCleanup; /* True in "cleanup" state */ + const char *zTbl; /* Name of target db table */ + const char *zDataTbl; /* Name of rbu db table (or null) */ + const char *zIdx; /* Name of target db index (or null) */ + int iTnum; /* Root page of current object */ + int iPkTnum; /* If eType==EXTERNAL, root of PK index */ + int bUnique; /* Current index is unique */ + int nIndex; /* Number of aux. indexes on table zTbl */ + + /* Statements created by rbuObjIterPrepareAll() */ + int nCol; /* Number of columns in current object */ + sqlite3_stmt *pSelect; /* Source data */ + sqlite3_stmt *pInsert; /* Statement for INSERT operations */ + sqlite3_stmt *pDelete; /* Statement for DELETE ops */ + sqlite3_stmt *pTmpInsert; /* Insert into rbu_tmp_$zDataTbl */ + + /* Last UPDATE used (for PK b-tree updates only), or NULL. */ + RbuUpdateStmt *pRbuUpdate; +}; + +/* +** Values for RbuObjIter.eType +** +** 0: Table does not exist (error) +** 1: Table has an implicit rowid. +** 2: Table has an explicit IPK column. +** 3: Table has an external PK index. +** 4: Table is WITHOUT ROWID. +** 5: Table is a virtual table. +*/ +#define RBU_PK_NOTABLE 0 +#define RBU_PK_NONE 1 +#define RBU_PK_IPK 2 +#define RBU_PK_EXTERNAL 3 +#define RBU_PK_WITHOUT_ROWID 4 +#define RBU_PK_VTAB 5 + + +/* +** Within the RBU_STAGE_OAL stage, each call to sqlite3rbu_step() performs +** one of the following operations. +*/ +#define RBU_INSERT 1 /* Insert on a main table b-tree */ +#define RBU_DELETE 2 /* Delete a row from a main table b-tree */ +#define RBU_REPLACE 3 /* Delete and then insert a row */ +#define RBU_IDX_DELETE 4 /* Delete a row from an aux. index b-tree */ +#define RBU_IDX_INSERT 5 /* Insert on an aux. index b-tree */ + +#define RBU_UPDATE 6 /* Update a row in a main table b-tree */ + +/* +** A single step of an incremental checkpoint - frame iWalFrame of the wal +** file should be copied to page iDbPage of the database file. +*/ +struct RbuFrame { + u32 iDbPage; + u32 iWalFrame; +}; + +/* +** RBU handle. +** +** nPhaseOneStep: +** If the RBU database contains an rbu_count table, this value is set to +** a running estimate of the number of b-tree operations required to +** finish populating the *-oal file. This allows the sqlite3_bp_progress() +** API to calculate the permyriadage progress of populating the *-oal file +** using the formula: +** +** permyriadage = (10000 * nProgress) / nPhaseOneStep +** +** nPhaseOneStep is initialized to the sum of: +** +** nRow * (nIndex + 1) +** +** for all source tables in the RBU database, where nRow is the number +** of rows in the source table and nIndex the number of indexes on the +** corresponding target database table. +** +** This estimate is accurate if the RBU update consists entirely of +** INSERT operations. However, it is inaccurate if: +** +** * the RBU update contains any UPDATE operations. If the PK specified +** for an UPDATE operation does not exist in the target table, then +** no b-tree operations are required on index b-trees. Or if the +** specified PK does exist, then (nIndex*2) such operations are +** required (one delete and one insert on each index b-tree). +** +** * the RBU update contains any DELETE operations for which the specified +** PK does not exist. In this case no operations are required on index +** b-trees. +** +** * the RBU update contains REPLACE operations. These are similar to +** UPDATE operations. +** +** nPhaseOneStep is updated to account for the conditions above during the +** first pass of each source table. The updated nPhaseOneStep value is +** stored in the rbu_state table if the RBU update is suspended. +*/ +struct sqlite3rbu { + int eStage; /* Value of RBU_STATE_STAGE field */ + sqlite3 *dbMain; /* target database handle */ + sqlite3 *dbRbu; /* rbu database handle */ + char *zTarget; /* Path to target db */ + char *zRbu; /* Path to rbu db */ + char *zState; /* Path to state db (or NULL if zRbu) */ + char zStateDb[5]; /* Db name for state ("stat" or "main") */ + int rc; /* Value returned by last rbu_step() call */ + char *zErrmsg; /* Error message if rc!=SQLITE_OK */ + int nStep; /* Rows processed for current object */ + int nProgress; /* Rows processed for all objects */ + RbuObjIter objiter; /* Iterator for skipping through tbl/idx */ + const char *zVfsName; /* Name of automatically created rbu vfs */ + rbu_file *pTargetFd; /* File handle open on target db */ + i64 iOalSz; + i64 nPhaseOneStep; + + /* The following state variables are used as part of the incremental + ** checkpoint stage (eStage==RBU_STAGE_CKPT). See comments surrounding + ** function rbuSetupCheckpoint() for details. */ + u32 iMaxFrame; /* Largest iWalFrame value in aFrame[] */ + u32 mLock; + int nFrame; /* Entries in aFrame[] array */ + int nFrameAlloc; /* Allocated size of aFrame[] array */ + RbuFrame *aFrame; + int pgsz; + u8 *aBuf; + i64 iWalCksum; + + /* Used in RBU vacuum mode only */ + int nRbu; /* Number of RBU VFS in the stack */ + rbu_file *pRbuFd; /* Fd for main db of dbRbu */ +}; + +/* +** An rbu VFS is implemented using an instance of this structure. +*/ +struct rbu_vfs { + sqlite3_vfs base; /* rbu VFS shim methods */ + sqlite3_vfs *pRealVfs; /* Underlying VFS */ + sqlite3_mutex *mutex; /* Mutex to protect pMain */ + rbu_file *pMain; /* Linked list of main db files */ +}; + +/* +** Each file opened by an rbu VFS is represented by an instance of +** the following structure. +*/ +struct rbu_file { + sqlite3_file base; /* sqlite3_file methods */ + sqlite3_file *pReal; /* Underlying file handle */ + rbu_vfs *pRbuVfs; /* Pointer to the rbu_vfs object */ + sqlite3rbu *pRbu; /* Pointer to rbu object (rbu target only) */ + + int openFlags; /* Flags this file was opened with */ + u32 iCookie; /* Cookie value for main db files */ + u8 iWriteVer; /* "write-version" value for main db files */ + u8 bNolock; /* True to fail EXCLUSIVE locks */ + + int nShm; /* Number of entries in apShm[] array */ + char **apShm; /* Array of mmap'd *-shm regions */ + char *zDel; /* Delete this when closing file */ + + const char *zWal; /* Wal filename for this main db file */ + rbu_file *pWalFd; /* Wal file descriptor for this main db */ + rbu_file *pMainNext; /* Next MAIN_DB file */ +}; + +/* +** True for an RBU vacuum handle, or false otherwise. +*/ +#define rbuIsVacuum(p) ((p)->zTarget==0) + + +/************************************************************************* +** The following three functions, found below: +** +** rbuDeltaGetInt() +** rbuDeltaChecksum() +** rbuDeltaApply() +** +** are lifted from the fossil source code (http://fossil-scm.org). They +** are used to implement the scalar SQL function rbu_fossil_delta(). +*/ + +/* +** Read bytes from *pz and convert them into a positive integer. When +** finished, leave *pz pointing to the first character past the end of +** the integer. The *pLen parameter holds the length of the string +** in *pz and is decremented once for each character in the integer. +*/ +static unsigned int rbuDeltaGetInt(const char **pz, int *pLen){ + static const signed char zValue[] = { + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, + -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, 36, + -1, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, -1, -1, -1, 63, -1, + }; + unsigned int v = 0; + int c; + unsigned char *z = (unsigned char*)*pz; + unsigned char *zStart = z; + while( (c = zValue[0x7f&*(z++)])>=0 ){ + v = (v<<6) + c; + } + z--; + *pLen -= z - zStart; + *pz = (char*)z; + return v; +} + +/* +** Compute a 32-bit checksum on the N-byte buffer. Return the result. +*/ +static unsigned int rbuDeltaChecksum(const char *zIn, size_t N){ + const unsigned char *z = (const unsigned char *)zIn; + unsigned sum0 = 0; + unsigned sum1 = 0; + unsigned sum2 = 0; + unsigned sum3 = 0; + while(N >= 16){ + sum0 += ((unsigned)z[0] + z[4] + z[8] + z[12]); + sum1 += ((unsigned)z[1] + z[5] + z[9] + z[13]); + sum2 += ((unsigned)z[2] + z[6] + z[10]+ z[14]); + sum3 += ((unsigned)z[3] + z[7] + z[11]+ z[15]); + z += 16; + N -= 16; + } + while(N >= 4){ + sum0 += z[0]; + sum1 += z[1]; + sum2 += z[2]; + sum3 += z[3]; + z += 4; + N -= 4; + } + sum3 += (sum2 << 8) + (sum1 << 16) + (sum0 << 24); + switch(N){ + case 3: sum3 += (z[2] << 8); + case 2: sum3 += (z[1] << 16); + case 1: sum3 += (z[0] << 24); + default: ; + } + return sum3; +} + +/* +** Apply a delta. +** +** The output buffer should be big enough to hold the whole output +** file and a NUL terminator at the end. The delta_output_size() +** routine will determine this size for you. +** +** The delta string should be null-terminated. But the delta string +** may contain embedded NUL characters (if the input and output are +** binary files) so we also have to pass in the length of the delta in +** the lenDelta parameter. +** +** This function returns the size of the output file in bytes (excluding +** the final NUL terminator character). Except, if the delta string is +** malformed or intended for use with a source file other than zSrc, +** then this routine returns -1. +** +** Refer to the delta_create() documentation above for a description +** of the delta file format. +*/ +static int rbuDeltaApply( + const char *zSrc, /* The source or pattern file */ + int lenSrc, /* Length of the source file */ + const char *zDelta, /* Delta to apply to the pattern */ + int lenDelta, /* Length of the delta */ + char *zOut /* Write the output into this preallocated buffer */ +){ + unsigned int limit; + unsigned int total = 0; +#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST + char *zOrigOut = zOut; +#endif + + limit = rbuDeltaGetInt(&zDelta, &lenDelta); + if( *zDelta!='\n' ){ + /* ERROR: size integer not terminated by "\n" */ + return -1; + } + zDelta++; lenDelta--; + while( *zDelta && lenDelta>0 ){ + unsigned int cnt, ofst; + cnt = rbuDeltaGetInt(&zDelta, &lenDelta); + switch( zDelta[0] ){ + case '@': { + zDelta++; lenDelta--; + ofst = rbuDeltaGetInt(&zDelta, &lenDelta); + if( lenDelta>0 && zDelta[0]!=',' ){ + /* ERROR: copy command not terminated by ',' */ + return -1; + } + zDelta++; lenDelta--; + total += cnt; + if( total>limit ){ + /* ERROR: copy exceeds output file size */ + return -1; + } + if( (int)(ofst+cnt) > lenSrc ){ + /* ERROR: copy extends past end of input */ + return -1; + } + memcpy(zOut, &zSrc[ofst], cnt); + zOut += cnt; + break; + } + case ':': { + zDelta++; lenDelta--; + total += cnt; + if( total>limit ){ + /* ERROR: insert command gives an output larger than predicted */ + return -1; + } + if( (int)cnt>lenDelta ){ + /* ERROR: insert count exceeds size of delta */ + return -1; + } + memcpy(zOut, zDelta, cnt); + zOut += cnt; + zDelta += cnt; + lenDelta -= cnt; + break; + } + case ';': { + zDelta++; lenDelta--; + zOut[0] = 0; +#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST + if( cnt!=rbuDeltaChecksum(zOrigOut, total) ){ + /* ERROR: bad checksum */ + return -1; + } +#endif + if( total!=limit ){ + /* ERROR: generated size does not match predicted size */ + return -1; + } + return total; + } + default: { + /* ERROR: unknown delta operator */ + return -1; + } + } + } + /* ERROR: unterminated delta */ + return -1; +} + +static int rbuDeltaOutputSize(const char *zDelta, int lenDelta){ + int size; + size = rbuDeltaGetInt(&zDelta, &lenDelta); + if( *zDelta!='\n' ){ + /* ERROR: size integer not terminated by "\n" */ + return -1; + } + return size; +} + +/* +** End of code taken from fossil. +*************************************************************************/ + +/* +** Implementation of SQL scalar function rbu_fossil_delta(). +** +** This function applies a fossil delta patch to a blob. Exactly two +** arguments must be passed to this function. The first is the blob to +** patch and the second the patch to apply. If no error occurs, this +** function returns the patched blob. +*/ +static void rbuFossilDeltaFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *aDelta; + int nDelta; + const char *aOrig; + int nOrig; + + int nOut; + int nOut2; + char *aOut; + + assert( argc==2 ); + + nOrig = sqlite3_value_bytes(argv[0]); + aOrig = (const char*)sqlite3_value_blob(argv[0]); + nDelta = sqlite3_value_bytes(argv[1]); + aDelta = (const char*)sqlite3_value_blob(argv[1]); + + /* Figure out the size of the output */ + nOut = rbuDeltaOutputSize(aDelta, nDelta); + if( nOut<0 ){ + sqlite3_result_error(context, "corrupt fossil delta", -1); + return; + } + + aOut = sqlite3_malloc(nOut+1); + if( aOut==0 ){ + sqlite3_result_error_nomem(context); + }else{ + nOut2 = rbuDeltaApply(aOrig, nOrig, aDelta, nDelta, aOut); + if( nOut2!=nOut ){ + sqlite3_result_error(context, "corrupt fossil delta", -1); + }else{ + sqlite3_result_blob(context, aOut, nOut, sqlite3_free); + } + } +} + + +/* +** Prepare the SQL statement in buffer zSql against database handle db. +** If successful, set *ppStmt to point to the new statement and return +** SQLITE_OK. +** +** Otherwise, if an error does occur, set *ppStmt to NULL and return +** an SQLite error code. Additionally, set output variable *pzErrmsg to +** point to a buffer containing an error message. It is the responsibility +** of the caller to (eventually) free this buffer using sqlite3_free(). +*/ +static int prepareAndCollectError( + sqlite3 *db, + sqlite3_stmt **ppStmt, + char **pzErrmsg, + const char *zSql +){ + int rc = sqlite3_prepare_v2(db, zSql, -1, ppStmt, 0); + if( rc!=SQLITE_OK ){ + *pzErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + *ppStmt = 0; + } + return rc; +} + +/* +** Reset the SQL statement passed as the first argument. Return a copy +** of the value returned by sqlite3_reset(). +** +** If an error has occurred, then set *pzErrmsg to point to a buffer +** containing an error message. It is the responsibility of the caller +** to eventually free this buffer using sqlite3_free(). +*/ +static int resetAndCollectError(sqlite3_stmt *pStmt, char **pzErrmsg){ + int rc = sqlite3_reset(pStmt); + if( rc!=SQLITE_OK ){ + *pzErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(sqlite3_db_handle(pStmt))); + } + return rc; +} + +/* +** Unless it is NULL, argument zSql points to a buffer allocated using +** sqlite3_malloc containing an SQL statement. This function prepares the SQL +** statement against database db and frees the buffer. If statement +** compilation is successful, *ppStmt is set to point to the new statement +** handle and SQLITE_OK is returned. +** +** Otherwise, if an error occurs, *ppStmt is set to NULL and an error code +** returned. In this case, *pzErrmsg may also be set to point to an error +** message. It is the responsibility of the caller to free this error message +** buffer using sqlite3_free(). +** +** If argument zSql is NULL, this function assumes that an OOM has occurred. +** In this case SQLITE_NOMEM is returned and *ppStmt set to NULL. +*/ +static int prepareFreeAndCollectError( + sqlite3 *db, + sqlite3_stmt **ppStmt, + char **pzErrmsg, + char *zSql +){ + int rc; + assert( *pzErrmsg==0 ); + if( zSql==0 ){ + rc = SQLITE_NOMEM; + *ppStmt = 0; + }else{ + rc = prepareAndCollectError(db, ppStmt, pzErrmsg, zSql); + sqlite3_free(zSql); + } + return rc; +} + +/* +** Free the RbuObjIter.azTblCol[] and RbuObjIter.abTblPk[] arrays allocated +** by an earlier call to rbuObjIterCacheTableInfo(). +*/ +static void rbuObjIterFreeCols(RbuObjIter *pIter){ + int i; + for(i=0; inTblCol; i++){ + sqlite3_free(pIter->azTblCol[i]); + sqlite3_free(pIter->azTblType[i]); + } + sqlite3_free(pIter->azTblCol); + pIter->azTblCol = 0; + pIter->azTblType = 0; + pIter->aiSrcOrder = 0; + pIter->abTblPk = 0; + pIter->abNotNull = 0; + pIter->nTblCol = 0; + pIter->eType = 0; /* Invalid value */ +} + +/* +** Finalize all statements and free all allocations that are specific to +** the current object (table/index pair). +*/ +static void rbuObjIterClearStatements(RbuObjIter *pIter){ + RbuUpdateStmt *pUp; + + sqlite3_finalize(pIter->pSelect); + sqlite3_finalize(pIter->pInsert); + sqlite3_finalize(pIter->pDelete); + sqlite3_finalize(pIter->pTmpInsert); + pUp = pIter->pRbuUpdate; + while( pUp ){ + RbuUpdateStmt *pTmp = pUp->pNext; + sqlite3_finalize(pUp->pUpdate); + sqlite3_free(pUp); + pUp = pTmp; + } + + pIter->pSelect = 0; + pIter->pInsert = 0; + pIter->pDelete = 0; + pIter->pRbuUpdate = 0; + pIter->pTmpInsert = 0; + pIter->nCol = 0; +} + +/* +** Clean up any resources allocated as part of the iterator object passed +** as the only argument. +*/ +static void rbuObjIterFinalize(RbuObjIter *pIter){ + rbuObjIterClearStatements(pIter); + sqlite3_finalize(pIter->pTblIter); + sqlite3_finalize(pIter->pIdxIter); + rbuObjIterFreeCols(pIter); + memset(pIter, 0, sizeof(RbuObjIter)); +} + +/* +** Advance the iterator to the next position. +** +** If no error occurs, SQLITE_OK is returned and the iterator is left +** pointing to the next entry. Otherwise, an error code and message is +** left in the RBU handle passed as the first argument. A copy of the +** error code is returned. +*/ +static int rbuObjIterNext(sqlite3rbu *p, RbuObjIter *pIter){ + int rc = p->rc; + if( rc==SQLITE_OK ){ + + /* Free any SQLite statements used while processing the previous object */ + rbuObjIterClearStatements(pIter); + if( pIter->zIdx==0 ){ + rc = sqlite3_exec(p->dbMain, + "DROP TRIGGER IF EXISTS temp.rbu_insert_tr;" + "DROP TRIGGER IF EXISTS temp.rbu_update1_tr;" + "DROP TRIGGER IF EXISTS temp.rbu_update2_tr;" + "DROP TRIGGER IF EXISTS temp.rbu_delete_tr;" + , 0, 0, &p->zErrmsg + ); + } + + if( rc==SQLITE_OK ){ + if( pIter->bCleanup ){ + rbuObjIterFreeCols(pIter); + pIter->bCleanup = 0; + rc = sqlite3_step(pIter->pTblIter); + if( rc!=SQLITE_ROW ){ + rc = resetAndCollectError(pIter->pTblIter, &p->zErrmsg); + pIter->zTbl = 0; + }else{ + pIter->zTbl = (const char*)sqlite3_column_text(pIter->pTblIter, 0); + pIter->zDataTbl = (const char*)sqlite3_column_text(pIter->pTblIter,1); + rc = (pIter->zDataTbl && pIter->zTbl) ? SQLITE_OK : SQLITE_NOMEM; + } + }else{ + if( pIter->zIdx==0 ){ + sqlite3_stmt *pIdx = pIter->pIdxIter; + rc = sqlite3_bind_text(pIdx, 1, pIter->zTbl, -1, SQLITE_STATIC); + } + if( rc==SQLITE_OK ){ + rc = sqlite3_step(pIter->pIdxIter); + if( rc!=SQLITE_ROW ){ + rc = resetAndCollectError(pIter->pIdxIter, &p->zErrmsg); + pIter->bCleanup = 1; + pIter->zIdx = 0; + }else{ + pIter->zIdx = (const char*)sqlite3_column_text(pIter->pIdxIter, 0); + pIter->iTnum = sqlite3_column_int(pIter->pIdxIter, 1); + pIter->bUnique = sqlite3_column_int(pIter->pIdxIter, 2); + rc = pIter->zIdx ? SQLITE_OK : SQLITE_NOMEM; + } + } + } + } + } + + if( rc!=SQLITE_OK ){ + rbuObjIterFinalize(pIter); + p->rc = rc; + } + return rc; +} + + +/* +** The implementation of the rbu_target_name() SQL function. This function +** accepts one or two arguments. The first argument is the name of a table - +** the name of a table in the RBU database. The second, if it is present, is 1 +** for a view or 0 for a table. +** +** For a non-vacuum RBU handle, if the table name matches the pattern: +** +** data[0-9]_ +** +** where is any sequence of 1 or more characters, is returned. +** Otherwise, if the only argument does not match the above pattern, an SQL +** NULL is returned. +** +** "data_t1" -> "t1" +** "data0123_t2" -> "t2" +** "dataAB_t3" -> NULL +** +** For an rbu vacuum handle, a copy of the first argument is returned if +** the second argument is either missing or 0 (not a view). +*/ +static void rbuTargetNameFunc( + sqlite3_context *pCtx, + int argc, + sqlite3_value **argv +){ + sqlite3rbu *p = sqlite3_user_data(pCtx); + const char *zIn; + assert( argc==1 || argc==2 ); + + zIn = (const char*)sqlite3_value_text(argv[0]); + if( zIn ){ + if( rbuIsVacuum(p) ){ + if( argc==1 || 0==sqlite3_value_int(argv[1]) ){ + sqlite3_result_text(pCtx, zIn, -1, SQLITE_STATIC); + } + }else{ + if( strlen(zIn)>4 && memcmp("data", zIn, 4)==0 ){ + int i; + for(i=4; zIn[i]>='0' && zIn[i]<='9'; i++); + if( zIn[i]=='_' && zIn[i+1] ){ + sqlite3_result_text(pCtx, &zIn[i+1], -1, SQLITE_STATIC); + } + } + } + } +} + +/* +** Initialize the iterator structure passed as the second argument. +** +** If no error occurs, SQLITE_OK is returned and the iterator is left +** pointing to the first entry. Otherwise, an error code and message is +** left in the RBU handle passed as the first argument. A copy of the +** error code is returned. +*/ +static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){ + int rc; + memset(pIter, 0, sizeof(RbuObjIter)); + + rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pTblIter, &p->zErrmsg, + sqlite3_mprintf( + "SELECT rbu_target_name(name, type='view') AS target, name " + "FROM sqlite_master " + "WHERE type IN ('table', 'view') AND target IS NOT NULL " + " %s " + "ORDER BY name" + , rbuIsVacuum(p) ? "AND rootpage!=0 AND rootpage IS NOT NULL" : "")); + + if( rc==SQLITE_OK ){ + rc = prepareAndCollectError(p->dbMain, &pIter->pIdxIter, &p->zErrmsg, + "SELECT name, rootpage, sql IS NULL OR substr(8, 6)=='UNIQUE' " + " FROM main.sqlite_master " + " WHERE type='index' AND tbl_name = ?" + ); + } + + pIter->bCleanup = 1; + p->rc = rc; + return rbuObjIterNext(p, pIter); +} + +/* +** This is a wrapper around "sqlite3_mprintf(zFmt, ...)". If an OOM occurs, +** an error code is stored in the RBU handle passed as the first argument. +** +** If an error has already occurred (p->rc is already set to something other +** than SQLITE_OK), then this function returns NULL without modifying the +** stored error code. In this case it still calls sqlite3_free() on any +** printf() parameters associated with %z conversions. +*/ +static char *rbuMPrintf(sqlite3rbu *p, const char *zFmt, ...){ + char *zSql = 0; + va_list ap; + va_start(ap, zFmt); + zSql = sqlite3_vmprintf(zFmt, ap); + if( p->rc==SQLITE_OK ){ + if( zSql==0 ) p->rc = SQLITE_NOMEM; + }else{ + sqlite3_free(zSql); + zSql = 0; + } + va_end(ap); + return zSql; +} + +/* +** Argument zFmt is a sqlite3_mprintf() style format string. The trailing +** arguments are the usual subsitution values. This function performs +** the printf() style substitutions and executes the result as an SQL +** statement on the RBU handles database. +** +** If an error occurs, an error code and error message is stored in the +** RBU handle. If an error has already occurred when this function is +** called, it is a no-op. +*/ +static int rbuMPrintfExec(sqlite3rbu *p, sqlite3 *db, const char *zFmt, ...){ + va_list ap; + char *zSql; + va_start(ap, zFmt); + zSql = sqlite3_vmprintf(zFmt, ap); + if( p->rc==SQLITE_OK ){ + if( zSql==0 ){ + p->rc = SQLITE_NOMEM; + }else{ + p->rc = sqlite3_exec(db, zSql, 0, 0, &p->zErrmsg); + } + } + sqlite3_free(zSql); + va_end(ap); + return p->rc; +} + +/* +** Attempt to allocate and return a pointer to a zeroed block of nByte +** bytes. +** +** If an error (i.e. an OOM condition) occurs, return NULL and leave an +** error code in the rbu handle passed as the first argument. Or, if an +** error has already occurred when this function is called, return NULL +** immediately without attempting the allocation or modifying the stored +** error code. +*/ +static void *rbuMalloc(sqlite3rbu *p, int nByte){ + void *pRet = 0; + if( p->rc==SQLITE_OK ){ + assert( nByte>0 ); + pRet = sqlite3_malloc64(nByte); + if( pRet==0 ){ + p->rc = SQLITE_NOMEM; + }else{ + memset(pRet, 0, nByte); + } + } + return pRet; +} + + +/* +** Allocate and zero the pIter->azTblCol[] and abTblPk[] arrays so that +** there is room for at least nCol elements. If an OOM occurs, store an +** error code in the RBU handle passed as the first argument. +*/ +static void rbuAllocateIterArrays(sqlite3rbu *p, RbuObjIter *pIter, int nCol){ + int nByte = (2*sizeof(char*) + sizeof(int) + 3*sizeof(u8)) * nCol; + char **azNew; + + azNew = (char**)rbuMalloc(p, nByte); + if( azNew ){ + pIter->azTblCol = azNew; + pIter->azTblType = &azNew[nCol]; + pIter->aiSrcOrder = (int*)&pIter->azTblType[nCol]; + pIter->abTblPk = (u8*)&pIter->aiSrcOrder[nCol]; + pIter->abNotNull = (u8*)&pIter->abTblPk[nCol]; + pIter->abIndexed = (u8*)&pIter->abNotNull[nCol]; + } +} + +/* +** The first argument must be a nul-terminated string. This function +** returns a copy of the string in memory obtained from sqlite3_malloc(). +** It is the responsibility of the caller to eventually free this memory +** using sqlite3_free(). +** +** If an OOM condition is encountered when attempting to allocate memory, +** output variable (*pRc) is set to SQLITE_NOMEM before returning. Otherwise, +** if the allocation succeeds, (*pRc) is left unchanged. +*/ +static char *rbuStrndup(const char *zStr, int *pRc){ + char *zRet = 0; + + assert( *pRc==SQLITE_OK ); + if( zStr ){ + size_t nCopy = strlen(zStr) + 1; + zRet = (char*)sqlite3_malloc64(nCopy); + if( zRet ){ + memcpy(zRet, zStr, nCopy); + }else{ + *pRc = SQLITE_NOMEM; + } + } + + return zRet; +} + +/* +** Finalize the statement passed as the second argument. +** +** If the sqlite3_finalize() call indicates that an error occurs, and the +** rbu handle error code is not already set, set the error code and error +** message accordingly. +*/ +static void rbuFinalize(sqlite3rbu *p, sqlite3_stmt *pStmt){ + sqlite3 *db = sqlite3_db_handle(pStmt); + int rc = sqlite3_finalize(pStmt); + if( p->rc==SQLITE_OK && rc!=SQLITE_OK ){ + p->rc = rc; + p->zErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + } +} + +/* Determine the type of a table. +** +** peType is of type (int*), a pointer to an output parameter of type +** (int). This call sets the output parameter as follows, depending +** on the type of the table specified by parameters dbName and zTbl. +** +** RBU_PK_NOTABLE: No such table. +** RBU_PK_NONE: Table has an implicit rowid. +** RBU_PK_IPK: Table has an explicit IPK column. +** RBU_PK_EXTERNAL: Table has an external PK index. +** RBU_PK_WITHOUT_ROWID: Table is WITHOUT ROWID. +** RBU_PK_VTAB: Table is a virtual table. +** +** Argument *piPk is also of type (int*), and also points to an output +** parameter. Unless the table has an external primary key index +** (i.e. unless *peType is set to 3), then *piPk is set to zero. Or, +** if the table does have an external primary key index, then *piPk +** is set to the root page number of the primary key index before +** returning. +** +** ALGORITHM: +** +** if( no entry exists in sqlite_master ){ +** return RBU_PK_NOTABLE +** }else if( sql for the entry starts with "CREATE VIRTUAL" ){ +** return RBU_PK_VTAB +** }else if( "PRAGMA index_list()" for the table contains a "pk" index ){ +** if( the index that is the pk exists in sqlite_master ){ +** *piPK = rootpage of that index. +** return RBU_PK_EXTERNAL +** }else{ +** return RBU_PK_WITHOUT_ROWID +** } +** }else if( "PRAGMA table_info()" lists one or more "pk" columns ){ +** return RBU_PK_IPK +** }else{ +** return RBU_PK_NONE +** } +*/ +static void rbuTableType( + sqlite3rbu *p, + const char *zTab, + int *peType, + int *piTnum, + int *piPk +){ + /* + ** 0) SELECT count(*) FROM sqlite_master where name=%Q AND IsVirtual(%Q) + ** 1) PRAGMA index_list = ? + ** 2) SELECT count(*) FROM sqlite_master where name=%Q + ** 3) PRAGMA table_info = ? + */ + sqlite3_stmt *aStmt[4] = {0, 0, 0, 0}; + + *peType = RBU_PK_NOTABLE; + *piPk = 0; + + assert( p->rc==SQLITE_OK ); + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[0], &p->zErrmsg, + sqlite3_mprintf( + "SELECT (sql LIKE 'create virtual%%'), rootpage" + " FROM sqlite_master" + " WHERE name=%Q", zTab + )); + if( p->rc!=SQLITE_OK || sqlite3_step(aStmt[0])!=SQLITE_ROW ){ + /* Either an error, or no such table. */ + goto rbuTableType_end; + } + if( sqlite3_column_int(aStmt[0], 0) ){ + *peType = RBU_PK_VTAB; /* virtual table */ + goto rbuTableType_end; + } + *piTnum = sqlite3_column_int(aStmt[0], 1); + + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[1], &p->zErrmsg, + sqlite3_mprintf("PRAGMA index_list=%Q",zTab) + ); + if( p->rc ) goto rbuTableType_end; + while( sqlite3_step(aStmt[1])==SQLITE_ROW ){ + const u8 *zOrig = sqlite3_column_text(aStmt[1], 3); + const u8 *zIdx = sqlite3_column_text(aStmt[1], 1); + if( zOrig && zIdx && zOrig[0]=='p' ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[2], &p->zErrmsg, + sqlite3_mprintf( + "SELECT rootpage FROM sqlite_master WHERE name = %Q", zIdx + )); + if( p->rc==SQLITE_OK ){ + if( sqlite3_step(aStmt[2])==SQLITE_ROW ){ + *piPk = sqlite3_column_int(aStmt[2], 0); + *peType = RBU_PK_EXTERNAL; + }else{ + *peType = RBU_PK_WITHOUT_ROWID; + } + } + goto rbuTableType_end; + } + } + + p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[3], &p->zErrmsg, + sqlite3_mprintf("PRAGMA table_info=%Q",zTab) + ); + if( p->rc==SQLITE_OK ){ + while( sqlite3_step(aStmt[3])==SQLITE_ROW ){ + if( sqlite3_column_int(aStmt[3],5)>0 ){ + *peType = RBU_PK_IPK; /* explicit IPK column */ + goto rbuTableType_end; + } + } + *peType = RBU_PK_NONE; + } + +rbuTableType_end: { + unsigned int i; + for(i=0; iabIndexed[] array. +*/ +static void rbuObjIterCacheIndexedCols(sqlite3rbu *p, RbuObjIter *pIter){ + sqlite3_stmt *pList = 0; + int bIndex = 0; + + if( p->rc==SQLITE_OK ){ + memcpy(pIter->abIndexed, pIter->abTblPk, sizeof(u8)*pIter->nTblCol); + p->rc = prepareFreeAndCollectError(p->dbMain, &pList, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_list = %Q", pIter->zTbl) + ); + } + + pIter->nIndex = 0; + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pList) ){ + const char *zIdx = (const char*)sqlite3_column_text(pList, 1); + sqlite3_stmt *pXInfo = 0; + if( zIdx==0 ) break; + p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", zIdx) + ); + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ + int iCid = sqlite3_column_int(pXInfo, 1); + if( iCid>=0 ) pIter->abIndexed[iCid] = 1; + } + rbuFinalize(p, pXInfo); + bIndex = 1; + pIter->nIndex++; + } + + if( pIter->eType==RBU_PK_WITHOUT_ROWID ){ + /* "PRAGMA index_list" includes the main PK b-tree */ + pIter->nIndex--; + } + + rbuFinalize(p, pList); + if( bIndex==0 ) pIter->abIndexed = 0; +} + + +/* +** If they are not already populated, populate the pIter->azTblCol[], +** pIter->abTblPk[], pIter->nTblCol and pIter->bRowid variables according to +** the table (not index) that the iterator currently points to. +** +** Return SQLITE_OK if successful, or an SQLite error code otherwise. If +** an error does occur, an error code and error message are also left in +** the RBU handle. +*/ +static int rbuObjIterCacheTableInfo(sqlite3rbu *p, RbuObjIter *pIter){ + if( pIter->azTblCol==0 ){ + sqlite3_stmt *pStmt = 0; + int nCol = 0; + int i; /* for() loop iterator variable */ + int bRbuRowid = 0; /* If input table has column "rbu_rowid" */ + int iOrder = 0; + int iTnum = 0; + + /* Figure out the type of table this step will deal with. */ + assert( pIter->eType==0 ); + rbuTableType(p, pIter->zTbl, &pIter->eType, &iTnum, &pIter->iPkTnum); + if( p->rc==SQLITE_OK && pIter->eType==RBU_PK_NOTABLE ){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("no such table: %s", pIter->zTbl); + } + if( p->rc ) return p->rc; + if( pIter->zIdx==0 ) pIter->iTnum = iTnum; + + assert( pIter->eType==RBU_PK_NONE || pIter->eType==RBU_PK_IPK + || pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_WITHOUT_ROWID + || pIter->eType==RBU_PK_VTAB + ); + + /* Populate the azTblCol[] and nTblCol variables based on the columns + ** of the input table. Ignore any input table columns that begin with + ** "rbu_". */ + p->rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, + sqlite3_mprintf("SELECT * FROM '%q'", pIter->zDataTbl) + ); + if( p->rc==SQLITE_OK ){ + nCol = sqlite3_column_count(pStmt); + rbuAllocateIterArrays(p, pIter, nCol); + } + for(i=0; p->rc==SQLITE_OK && irc); + pIter->aiSrcOrder[pIter->nTblCol] = pIter->nTblCol; + pIter->azTblCol[pIter->nTblCol++] = zCopy; + } + else if( 0==sqlite3_stricmp("rbu_rowid", zName) ){ + bRbuRowid = 1; + } + } + sqlite3_finalize(pStmt); + pStmt = 0; + + if( p->rc==SQLITE_OK + && rbuIsVacuum(p)==0 + && bRbuRowid!=(pIter->eType==RBU_PK_VTAB || pIter->eType==RBU_PK_NONE) + ){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf( + "table %q %s rbu_rowid column", pIter->zDataTbl, + (bRbuRowid ? "may not have" : "requires") + ); + } + + /* Check that all non-HIDDEN columns in the destination table are also + ** present in the input table. Populate the abTblPk[], azTblType[] and + ** aiTblOrder[] arrays at the same time. */ + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pStmt, &p->zErrmsg, + sqlite3_mprintf("PRAGMA table_info(%Q)", pIter->zTbl) + ); + } + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ + const char *zName = (const char*)sqlite3_column_text(pStmt, 1); + if( zName==0 ) break; /* An OOM - finalize() below returns S_NOMEM */ + for(i=iOrder; inTblCol; i++){ + if( 0==strcmp(zName, pIter->azTblCol[i]) ) break; + } + if( i==pIter->nTblCol ){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("column missing from %q: %s", + pIter->zDataTbl, zName + ); + }else{ + int iPk = sqlite3_column_int(pStmt, 5); + int bNotNull = sqlite3_column_int(pStmt, 3); + const char *zType = (const char*)sqlite3_column_text(pStmt, 2); + + if( i!=iOrder ){ + SWAP(int, pIter->aiSrcOrder[i], pIter->aiSrcOrder[iOrder]); + SWAP(char*, pIter->azTblCol[i], pIter->azTblCol[iOrder]); + } + + pIter->azTblType[iOrder] = rbuStrndup(zType, &p->rc); + pIter->abTblPk[iOrder] = (iPk!=0); + pIter->abNotNull[iOrder] = (u8)bNotNull || (iPk!=0); + iOrder++; + } + } + + rbuFinalize(p, pStmt); + rbuObjIterCacheIndexedCols(p, pIter); + assert( pIter->eType!=RBU_PK_VTAB || pIter->abIndexed==0 ); + assert( pIter->eType!=RBU_PK_VTAB || pIter->nIndex==0 ); + } + + return p->rc; +} + +/* +** This function constructs and returns a pointer to a nul-terminated +** string containing some SQL clause or list based on one or more of the +** column names currently stored in the pIter->azTblCol[] array. +*/ +static char *rbuObjIterGetCollist( + sqlite3rbu *p, /* RBU object */ + RbuObjIter *pIter /* Object iterator for column names */ +){ + char *zList = 0; + const char *zSep = ""; + int i; + for(i=0; inTblCol; i++){ + const char *z = pIter->azTblCol[i]; + zList = rbuMPrintf(p, "%z%s\"%w\"", zList, zSep, z); + zSep = ", "; + } + return zList; +} + +/* +** This function is used to create a SELECT list (the list of SQL +** expressions that follows a SELECT keyword) for a SELECT statement +** used to read from an data_xxx or rbu_tmp_xxx table while updating the +** index object currently indicated by the iterator object passed as the +** second argument. A "PRAGMA index_xinfo = " statement is used +** to obtain the required information. +** +** If the index is of the following form: +** +** CREATE INDEX i1 ON t1(c, b COLLATE nocase); +** +** and "t1" is a table with an explicit INTEGER PRIMARY KEY column +** "ipk", the returned string is: +** +** "`c` COLLATE 'BINARY', `b` COLLATE 'NOCASE', `ipk` COLLATE 'BINARY'" +** +** As well as the returned string, three other malloc'd strings are +** returned via output parameters. As follows: +** +** pzImposterCols: ... +** pzImposterPk: ... +** pzWhere: ... +*/ +static char *rbuObjIterGetIndexCols( + sqlite3rbu *p, /* RBU object */ + RbuObjIter *pIter, /* Object iterator for column names */ + char **pzImposterCols, /* OUT: Columns for imposter table */ + char **pzImposterPk, /* OUT: Imposter PK clause */ + char **pzWhere, /* OUT: WHERE clause */ + int *pnBind /* OUT: Trbul number of columns */ +){ + int rc = p->rc; /* Error code */ + int rc2; /* sqlite3_finalize() return code */ + char *zRet = 0; /* String to return */ + char *zImpCols = 0; /* String to return via *pzImposterCols */ + char *zImpPK = 0; /* String to return via *pzImposterPK */ + char *zWhere = 0; /* String to return via *pzWhere */ + int nBind = 0; /* Value to return via *pnBind */ + const char *zCom = ""; /* Set to ", " later on */ + const char *zAnd = ""; /* Set to " AND " later on */ + sqlite3_stmt *pXInfo = 0; /* PRAGMA index_xinfo = ? */ + + if( rc==SQLITE_OK ){ + assert( p->zErrmsg==0 ); + rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", pIter->zIdx) + ); + } + + while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ + int iCid = sqlite3_column_int(pXInfo, 1); + int bDesc = sqlite3_column_int(pXInfo, 3); + const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4); + const char *zCol; + const char *zType; + + if( iCid<0 ){ + /* An integer primary key. If the table has an explicit IPK, use + ** its name. Otherwise, use "rbu_rowid". */ + if( pIter->eType==RBU_PK_IPK ){ + int i; + for(i=0; pIter->abTblPk[i]==0; i++); + assert( inTblCol ); + zCol = pIter->azTblCol[i]; + }else if( rbuIsVacuum(p) ){ + zCol = "_rowid_"; + }else{ + zCol = "rbu_rowid"; + } + zType = "INTEGER"; + }else{ + zCol = pIter->azTblCol[iCid]; + zType = pIter->azTblType[iCid]; + } + + zRet = sqlite3_mprintf("%z%s\"%w\" COLLATE %Q", zRet, zCom, zCol, zCollate); + if( pIter->bUnique==0 || sqlite3_column_int(pXInfo, 5) ){ + const char *zOrder = (bDesc ? " DESC" : ""); + zImpPK = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\"%s", + zImpPK, zCom, nBind, zCol, zOrder + ); + } + zImpCols = sqlite3_mprintf("%z%s\"rbu_imp_%d%w\" %s COLLATE %Q", + zImpCols, zCom, nBind, zCol, zType, zCollate + ); + zWhere = sqlite3_mprintf( + "%z%s\"rbu_imp_%d%w\" IS ?", zWhere, zAnd, nBind, zCol + ); + if( zRet==0 || zImpPK==0 || zImpCols==0 || zWhere==0 ) rc = SQLITE_NOMEM; + zCom = ", "; + zAnd = " AND "; + nBind++; + } + + rc2 = sqlite3_finalize(pXInfo); + if( rc==SQLITE_OK ) rc = rc2; + + if( rc!=SQLITE_OK ){ + sqlite3_free(zRet); + sqlite3_free(zImpCols); + sqlite3_free(zImpPK); + sqlite3_free(zWhere); + zRet = 0; + zImpCols = 0; + zImpPK = 0; + zWhere = 0; + p->rc = rc; + } + + *pzImposterCols = zImpCols; + *pzImposterPk = zImpPK; + *pzWhere = zWhere; + *pnBind = nBind; + return zRet; +} + +/* +** Assuming the current table columns are "a", "b" and "c", and the zObj +** paramter is passed "old", return a string of the form: +** +** "old.a, old.b, old.b" +** +** With the column names escaped. +** +** For tables with implicit rowids - RBU_PK_EXTERNAL and RBU_PK_NONE, append +** the text ", old._rowid_" to the returned value. +*/ +static char *rbuObjIterGetOldlist( + sqlite3rbu *p, + RbuObjIter *pIter, + const char *zObj +){ + char *zList = 0; + if( p->rc==SQLITE_OK && pIter->abIndexed ){ + const char *zS = ""; + int i; + for(i=0; inTblCol; i++){ + if( pIter->abIndexed[i] ){ + const char *zCol = pIter->azTblCol[i]; + zList = sqlite3_mprintf("%z%s%s.\"%w\"", zList, zS, zObj, zCol); + }else{ + zList = sqlite3_mprintf("%z%sNULL", zList, zS); + } + zS = ", "; + if( zList==0 ){ + p->rc = SQLITE_NOMEM; + break; + } + } + + /* For a table with implicit rowids, append "old._rowid_" to the list. */ + if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ + zList = rbuMPrintf(p, "%z, %s._rowid_", zList, zObj); + } + } + return zList; +} + +/* +** Return an expression that can be used in a WHERE clause to match the +** primary key of the current table. For example, if the table is: +** +** CREATE TABLE t1(a, b, c, PRIMARY KEY(b, c)); +** +** Return the string: +** +** "b = ?1 AND c = ?2" +*/ +static char *rbuObjIterGetWhere( + sqlite3rbu *p, + RbuObjIter *pIter +){ + char *zList = 0; + if( pIter->eType==RBU_PK_VTAB || pIter->eType==RBU_PK_NONE ){ + zList = rbuMPrintf(p, "_rowid_ = ?%d", pIter->nTblCol+1); + }else if( pIter->eType==RBU_PK_EXTERNAL ){ + const char *zSep = ""; + int i; + for(i=0; inTblCol; i++){ + if( pIter->abTblPk[i] ){ + zList = rbuMPrintf(p, "%z%sc%d=?%d", zList, zSep, i, i+1); + zSep = " AND "; + } + } + zList = rbuMPrintf(p, + "_rowid_ = (SELECT id FROM rbu_imposter2 WHERE %z)", zList + ); + + }else{ + const char *zSep = ""; + int i; + for(i=0; inTblCol; i++){ + if( pIter->abTblPk[i] ){ + const char *zCol = pIter->azTblCol[i]; + zList = rbuMPrintf(p, "%z%s\"%w\"=?%d", zList, zSep, zCol, i+1); + zSep = " AND "; + } + } + } + return zList; +} + +/* +** The SELECT statement iterating through the keys for the current object +** (p->objiter.pSelect) currently points to a valid row. However, there +** is something wrong with the rbu_control value in the rbu_control value +** stored in the (p->nCol+1)'th column. Set the error code and error message +** of the RBU handle to something reflecting this. +*/ +static void rbuBadControlError(sqlite3rbu *p){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("invalid rbu_control value"); +} + + +/* +** Return a nul-terminated string containing the comma separated list of +** assignments that should be included following the "SET" keyword of +** an UPDATE statement used to update the table object that the iterator +** passed as the second argument currently points to if the rbu_control +** column of the data_xxx table entry is set to zMask. +** +** The memory for the returned string is obtained from sqlite3_malloc(). +** It is the responsibility of the caller to eventually free it using +** sqlite3_free(). +** +** If an OOM error is encountered when allocating space for the new +** string, an error code is left in the rbu handle passed as the first +** argument and NULL is returned. Or, if an error has already occurred +** when this function is called, NULL is returned immediately, without +** attempting the allocation or modifying the stored error code. +*/ +static char *rbuObjIterGetSetlist( + sqlite3rbu *p, + RbuObjIter *pIter, + const char *zMask +){ + char *zList = 0; + if( p->rc==SQLITE_OK ){ + int i; + + if( (int)strlen(zMask)!=pIter->nTblCol ){ + rbuBadControlError(p); + }else{ + const char *zSep = ""; + for(i=0; inTblCol; i++){ + char c = zMask[pIter->aiSrcOrder[i]]; + if( c=='x' ){ + zList = rbuMPrintf(p, "%z%s\"%w\"=?%d", + zList, zSep, pIter->azTblCol[i], i+1 + ); + zSep = ", "; + } + else if( c=='d' ){ + zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_delta(\"%w\", ?%d)", + zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 + ); + zSep = ", "; + } + else if( c=='f' ){ + zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_fossil_delta(\"%w\", ?%d)", + zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 + ); + zSep = ", "; + } + } + } + } + return zList; +} + +/* +** Return a nul-terminated string consisting of nByte comma separated +** "?" expressions. For example, if nByte is 3, return a pointer to +** a buffer containing the string "?,?,?". +** +** The memory for the returned string is obtained from sqlite3_malloc(). +** It is the responsibility of the caller to eventually free it using +** sqlite3_free(). +** +** If an OOM error is encountered when allocating space for the new +** string, an error code is left in the rbu handle passed as the first +** argument and NULL is returned. Or, if an error has already occurred +** when this function is called, NULL is returned immediately, without +** attempting the allocation or modifying the stored error code. +*/ +static char *rbuObjIterGetBindlist(sqlite3rbu *p, int nBind){ + char *zRet = 0; + int nByte = nBind*2 + 1; + + zRet = (char*)rbuMalloc(p, nByte); + if( zRet ){ + int i; + for(i=0; izIdx==0 ); + if( p->rc==SQLITE_OK ){ + const char *zSep = "PRIMARY KEY("; + sqlite3_stmt *pXList = 0; /* PRAGMA index_list = (pIter->zTbl) */ + sqlite3_stmt *pXInfo = 0; /* PRAGMA index_xinfo = */ + + p->rc = prepareFreeAndCollectError(p->dbMain, &pXList, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_list = %Q", pIter->zTbl) + ); + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXList) ){ + const char *zOrig = (const char*)sqlite3_column_text(pXList,3); + if( zOrig && strcmp(zOrig, "pk")==0 ){ + const char *zIdx = (const char*)sqlite3_column_text(pXList,1); + if( zIdx ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", zIdx) + ); + } + break; + } + } + rbuFinalize(p, pXList); + + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ + if( sqlite3_column_int(pXInfo, 5) ){ + /* int iCid = sqlite3_column_int(pXInfo, 0); */ + const char *zCol = (const char*)sqlite3_column_text(pXInfo, 2); + const char *zDesc = sqlite3_column_int(pXInfo, 3) ? " DESC" : ""; + z = rbuMPrintf(p, "%z%s\"%w\"%s", z, zSep, zCol, zDesc); + zSep = ", "; + } + } + z = rbuMPrintf(p, "%z)", z); + rbuFinalize(p, pXInfo); + } + return z; +} + +/* +** This function creates the second imposter table used when writing to +** a table b-tree where the table has an external primary key. If the +** iterator passed as the second argument does not currently point to +** a table (not index) with an external primary key, this function is a +** no-op. +** +** Assuming the iterator does point to a table with an external PK, this +** function creates a WITHOUT ROWID imposter table named "rbu_imposter2" +** used to access that PK index. For example, if the target table is +** declared as follows: +** +** CREATE TABLE t1(a, b TEXT, c REAL, PRIMARY KEY(b, c)); +** +** then the imposter table schema is: +** +** CREATE TABLE rbu_imposter2(c1 TEXT, c2 REAL, id INTEGER) WITHOUT ROWID; +** +*/ +static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){ + if( p->rc==SQLITE_OK && pIter->eType==RBU_PK_EXTERNAL ){ + int tnum = pIter->iPkTnum; /* Root page of PK index */ + sqlite3_stmt *pQuery = 0; /* SELECT name ... WHERE rootpage = $tnum */ + const char *zIdx = 0; /* Name of PK index */ + sqlite3_stmt *pXInfo = 0; /* PRAGMA main.index_xinfo = $zIdx */ + const char *zComma = ""; + char *zCols = 0; /* Used to build up list of table cols */ + char *zPk = 0; /* Used to build up table PK declaration */ + + /* Figure out the name of the primary key index for the current table. + ** This is needed for the argument to "PRAGMA index_xinfo". Set + ** zIdx to point to a nul-terminated string containing this name. */ + p->rc = prepareAndCollectError(p->dbMain, &pQuery, &p->zErrmsg, + "SELECT name FROM sqlite_master WHERE rootpage = ?" + ); + if( p->rc==SQLITE_OK ){ + sqlite3_bind_int(pQuery, 1, tnum); + if( SQLITE_ROW==sqlite3_step(pQuery) ){ + zIdx = (const char*)sqlite3_column_text(pQuery, 0); + } + } + if( zIdx ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pXInfo, &p->zErrmsg, + sqlite3_mprintf("PRAGMA main.index_xinfo = %Q", zIdx) + ); + } + rbuFinalize(p, pQuery); + + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pXInfo) ){ + int bKey = sqlite3_column_int(pXInfo, 5); + if( bKey ){ + int iCid = sqlite3_column_int(pXInfo, 1); + int bDesc = sqlite3_column_int(pXInfo, 3); + const char *zCollate = (const char*)sqlite3_column_text(pXInfo, 4); + zCols = rbuMPrintf(p, "%z%sc%d %s COLLATE %s", zCols, zComma, + iCid, pIter->azTblType[iCid], zCollate + ); + zPk = rbuMPrintf(p, "%z%sc%d%s", zPk, zComma, iCid, bDesc?" DESC":""); + zComma = ", "; + } + } + zCols = rbuMPrintf(p, "%z, id INTEGER", zCols); + rbuFinalize(p, pXInfo); + + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1, tnum); + rbuMPrintfExec(p, p->dbMain, + "CREATE TABLE rbu_imposter2(%z, PRIMARY KEY(%z)) WITHOUT ROWID", + zCols, zPk + ); + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 0); + } +} + +/* +** If an error has already occurred when this function is called, it +** immediately returns zero (without doing any work). Or, if an error +** occurs during the execution of this function, it sets the error code +** in the sqlite3rbu object indicated by the first argument and returns +** zero. +** +** The iterator passed as the second argument is guaranteed to point to +** a table (not an index) when this function is called. This function +** attempts to create any imposter table required to write to the main +** table b-tree of the table before returning. Non-zero is returned if +** an imposter table are created, or zero otherwise. +** +** An imposter table is required in all cases except RBU_PK_VTAB. Only +** virtual tables are written to directly. The imposter table has the +** same schema as the actual target table (less any UNIQUE constraints). +** More precisely, the "same schema" means the same columns, types, +** collation sequences. For tables that do not have an external PRIMARY +** KEY, it also means the same PRIMARY KEY declaration. +*/ +static void rbuCreateImposterTable(sqlite3rbu *p, RbuObjIter *pIter){ + if( p->rc==SQLITE_OK && pIter->eType!=RBU_PK_VTAB ){ + int tnum = pIter->iTnum; + const char *zComma = ""; + char *zSql = 0; + int iCol; + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 1); + + for(iCol=0; p->rc==SQLITE_OK && iColnTblCol; iCol++){ + const char *zPk = ""; + const char *zCol = pIter->azTblCol[iCol]; + const char *zColl = 0; + + p->rc = sqlite3_table_column_metadata( + p->dbMain, "main", pIter->zTbl, zCol, 0, &zColl, 0, 0, 0 + ); + + if( pIter->eType==RBU_PK_IPK && pIter->abTblPk[iCol] ){ + /* If the target table column is an "INTEGER PRIMARY KEY", add + ** "PRIMARY KEY" to the imposter table column declaration. */ + zPk = "PRIMARY KEY "; + } + zSql = rbuMPrintf(p, "%z%s\"%w\" %s %sCOLLATE %s%s", + zSql, zComma, zCol, pIter->azTblType[iCol], zPk, zColl, + (pIter->abNotNull[iCol] ? " NOT NULL" : "") + ); + zComma = ", "; + } + + if( pIter->eType==RBU_PK_WITHOUT_ROWID ){ + char *zPk = rbuWithoutRowidPK(p, pIter); + if( zPk ){ + zSql = rbuMPrintf(p, "%z, %z", zSql, zPk); + } + } + + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1, tnum); + rbuMPrintfExec(p, p->dbMain, "CREATE TABLE \"rbu_imp_%w\"(%z)%s", + pIter->zTbl, zSql, + (pIter->eType==RBU_PK_WITHOUT_ROWID ? " WITHOUT ROWID" : "") + ); + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 0); + } +} + +/* +** Prepare a statement used to insert rows into the "rbu_tmp_xxx" table. +** Specifically a statement of the form: +** +** INSERT INTO rbu_tmp_xxx VALUES(?, ?, ? ...); +** +** The number of bound variables is equal to the number of columns in +** the target table, plus one (for the rbu_control column), plus one more +** (for the rbu_rowid column) if the target table is an implicit IPK or +** virtual table. +*/ +static void rbuObjIterPrepareTmpInsert( + sqlite3rbu *p, + RbuObjIter *pIter, + const char *zCollist, + const char *zRbuRowid +){ + int bRbuRowid = (pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE); + char *zBind = rbuObjIterGetBindlist(p, pIter->nTblCol + 1 + bRbuRowid); + if( zBind ){ + assert( pIter->pTmpInsert==0 ); + p->rc = prepareFreeAndCollectError( + p->dbRbu, &pIter->pTmpInsert, &p->zErrmsg, sqlite3_mprintf( + "INSERT INTO %s.'rbu_tmp_%q'(rbu_control,%s%s) VALUES(%z)", + p->zStateDb, pIter->zDataTbl, zCollist, zRbuRowid, zBind + )); + } +} + +static void rbuTmpInsertFunc( + sqlite3_context *pCtx, + int nVal, + sqlite3_value **apVal +){ + sqlite3rbu *p = sqlite3_user_data(pCtx); + int rc = SQLITE_OK; + int i; + + assert( sqlite3_value_int(apVal[0])!=0 + || p->objiter.eType==RBU_PK_EXTERNAL + || p->objiter.eType==RBU_PK_NONE + ); + if( sqlite3_value_int(apVal[0])!=0 ){ + p->nPhaseOneStep += p->objiter.nIndex; + } + + for(i=0; rc==SQLITE_OK && iobjiter.pTmpInsert, i+1, apVal[i]); + } + if( rc==SQLITE_OK ){ + sqlite3_step(p->objiter.pTmpInsert); + rc = sqlite3_reset(p->objiter.pTmpInsert); + } + + if( rc!=SQLITE_OK ){ + sqlite3_result_error_code(pCtx, rc); + } +} + +/* +** Ensure that the SQLite statement handles required to update the +** target database object currently indicated by the iterator passed +** as the second argument are available. +*/ +static int rbuObjIterPrepareAll( + sqlite3rbu *p, + RbuObjIter *pIter, + int nOffset /* Add "LIMIT -1 OFFSET $nOffset" to SELECT */ +){ + assert( pIter->bCleanup==0 ); + if( pIter->pSelect==0 && rbuObjIterCacheTableInfo(p, pIter)==SQLITE_OK ){ + const int tnum = pIter->iTnum; + char *zCollist = 0; /* List of indexed columns */ + char **pz = &p->zErrmsg; + const char *zIdx = pIter->zIdx; + char *zLimit = 0; + + if( nOffset ){ + zLimit = sqlite3_mprintf(" LIMIT -1 OFFSET %d", nOffset); + if( !zLimit ) p->rc = SQLITE_NOMEM; + } + + if( zIdx ){ + const char *zTbl = pIter->zTbl; + char *zImposterCols = 0; /* Columns for imposter table */ + char *zImposterPK = 0; /* Primary key declaration for imposter */ + char *zWhere = 0; /* WHERE clause on PK columns */ + char *zBind = 0; + int nBind = 0; + + assert( pIter->eType!=RBU_PK_VTAB ); + zCollist = rbuObjIterGetIndexCols( + p, pIter, &zImposterCols, &zImposterPK, &zWhere, &nBind + ); + zBind = rbuObjIterGetBindlist(p, nBind); + + /* Create the imposter table used to write to this index. */ + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 1); + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 1,tnum); + rbuMPrintfExec(p, p->dbMain, + "CREATE TABLE \"rbu_imp_%w\"( %s, PRIMARY KEY( %s ) ) WITHOUT ROWID", + zTbl, zImposterCols, zImposterPK + ); + sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->dbMain, "main", 0, 0); + + /* Create the statement to insert index entries */ + pIter->nCol = nBind; + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError( + p->dbMain, &pIter->pInsert, &p->zErrmsg, + sqlite3_mprintf("INSERT INTO \"rbu_imp_%w\" VALUES(%s)", zTbl, zBind) + ); + } + + /* And to delete index entries */ + if( rbuIsVacuum(p)==0 && p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError( + p->dbMain, &pIter->pDelete, &p->zErrmsg, + sqlite3_mprintf("DELETE FROM \"rbu_imp_%w\" WHERE %s", zTbl, zWhere) + ); + } + + /* Create the SELECT statement to read keys in sorted order */ + if( p->rc==SQLITE_OK ){ + char *zSql; + if( rbuIsVacuum(p) ){ + zSql = sqlite3_mprintf( + "SELECT %s, 0 AS rbu_control FROM '%q' ORDER BY %s%s", + zCollist, + pIter->zDataTbl, + zCollist, zLimit + ); + }else + + if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ + zSql = sqlite3_mprintf( + "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' ORDER BY %s%s", + zCollist, p->zStateDb, pIter->zDataTbl, + zCollist, zLimit + ); + }else{ + zSql = sqlite3_mprintf( + "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' " + "UNION ALL " + "SELECT %s, rbu_control FROM '%q' " + "WHERE typeof(rbu_control)='integer' AND rbu_control!=1 " + "ORDER BY %s%s", + zCollist, p->zStateDb, pIter->zDataTbl, + zCollist, pIter->zDataTbl, + zCollist, zLimit + ); + } + p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, zSql); + } + + sqlite3_free(zImposterCols); + sqlite3_free(zImposterPK); + sqlite3_free(zWhere); + sqlite3_free(zBind); + }else{ + int bRbuRowid = (pIter->eType==RBU_PK_VTAB) + ||(pIter->eType==RBU_PK_NONE) + ||(pIter->eType==RBU_PK_EXTERNAL && rbuIsVacuum(p)); + const char *zTbl = pIter->zTbl; /* Table this step applies to */ + const char *zWrite; /* Imposter table name */ + + char *zBindings = rbuObjIterGetBindlist(p, pIter->nTblCol + bRbuRowid); + char *zWhere = rbuObjIterGetWhere(p, pIter); + char *zOldlist = rbuObjIterGetOldlist(p, pIter, "old"); + char *zNewlist = rbuObjIterGetOldlist(p, pIter, "new"); + + zCollist = rbuObjIterGetCollist(p, pIter); + pIter->nCol = pIter->nTblCol; + + /* Create the imposter table or tables (if required). */ + rbuCreateImposterTable(p, pIter); + rbuCreateImposterTable2(p, pIter); + zWrite = (pIter->eType==RBU_PK_VTAB ? "" : "rbu_imp_"); + + /* Create the INSERT statement to write to the target PK b-tree */ + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pIter->pInsert, pz, + sqlite3_mprintf( + "INSERT INTO \"%s%w\"(%s%s) VALUES(%s)", + zWrite, zTbl, zCollist, (bRbuRowid ? ", _rowid_" : ""), zBindings + ) + ); + } + + /* Create the DELETE statement to write to the target PK b-tree. + ** Because it only performs INSERT operations, this is not required for + ** an rbu vacuum handle. */ + if( rbuIsVacuum(p)==0 && p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbMain, &pIter->pDelete, pz, + sqlite3_mprintf( + "DELETE FROM \"%s%w\" WHERE %s", zWrite, zTbl, zWhere + ) + ); + } + + if( rbuIsVacuum(p)==0 && pIter->abIndexed ){ + const char *zRbuRowid = ""; + if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ + zRbuRowid = ", rbu_rowid"; + } + + /* Create the rbu_tmp_xxx table and the triggers to populate it. */ + rbuMPrintfExec(p, p->dbRbu, + "CREATE TABLE IF NOT EXISTS %s.'rbu_tmp_%q' AS " + "SELECT *%s FROM '%q' WHERE 0;" + , p->zStateDb, pIter->zDataTbl + , (pIter->eType==RBU_PK_EXTERNAL ? ", 0 AS rbu_rowid" : "") + , pIter->zDataTbl + ); + + rbuMPrintfExec(p, p->dbMain, + "CREATE TEMP TRIGGER rbu_delete_tr BEFORE DELETE ON \"%s%w\" " + "BEGIN " + " SELECT rbu_tmp_insert(3, %s);" + "END;" + + "CREATE TEMP TRIGGER rbu_update1_tr BEFORE UPDATE ON \"%s%w\" " + "BEGIN " + " SELECT rbu_tmp_insert(3, %s);" + "END;" + + "CREATE TEMP TRIGGER rbu_update2_tr AFTER UPDATE ON \"%s%w\" " + "BEGIN " + " SELECT rbu_tmp_insert(4, %s);" + "END;", + zWrite, zTbl, zOldlist, + zWrite, zTbl, zOldlist, + zWrite, zTbl, zNewlist + ); + + if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ + rbuMPrintfExec(p, p->dbMain, + "CREATE TEMP TRIGGER rbu_insert_tr AFTER INSERT ON \"%s%w\" " + "BEGIN " + " SELECT rbu_tmp_insert(0, %s);" + "END;", + zWrite, zTbl, zNewlist + ); + } + + rbuObjIterPrepareTmpInsert(p, pIter, zCollist, zRbuRowid); + } + + /* Create the SELECT statement to read keys from data_xxx */ + if( p->rc==SQLITE_OK ){ + const char *zRbuRowid = ""; + if( bRbuRowid ){ + zRbuRowid = rbuIsVacuum(p) ? ",_rowid_ " : ",rbu_rowid"; + } + p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, + sqlite3_mprintf( + "SELECT %s,%s rbu_control%s FROM '%q'%s", + zCollist, + (rbuIsVacuum(p) ? "0 AS " : ""), + zRbuRowid, + pIter->zDataTbl, zLimit + ) + ); + } + + sqlite3_free(zWhere); + sqlite3_free(zOldlist); + sqlite3_free(zNewlist); + sqlite3_free(zBindings); + } + sqlite3_free(zCollist); + sqlite3_free(zLimit); + } + + return p->rc; +} + +/* +** Set output variable *ppStmt to point to an UPDATE statement that may +** be used to update the imposter table for the main table b-tree of the +** table object that pIter currently points to, assuming that the +** rbu_control column of the data_xyz table contains zMask. +** +** If the zMask string does not specify any columns to update, then this +** is not an error. Output variable *ppStmt is set to NULL in this case. +*/ +static int rbuGetUpdateStmt( + sqlite3rbu *p, /* RBU handle */ + RbuObjIter *pIter, /* Object iterator */ + const char *zMask, /* rbu_control value ('x.x.') */ + sqlite3_stmt **ppStmt /* OUT: UPDATE statement handle */ +){ + RbuUpdateStmt **pp; + RbuUpdateStmt *pUp = 0; + int nUp = 0; + + /* In case an error occurs */ + *ppStmt = 0; + + /* Search for an existing statement. If one is found, shift it to the front + ** of the LRU queue and return immediately. Otherwise, leave nUp pointing + ** to the number of statements currently in the cache and pUp to the + ** last object in the list. */ + for(pp=&pIter->pRbuUpdate; *pp; pp=&((*pp)->pNext)){ + pUp = *pp; + if( strcmp(pUp->zMask, zMask)==0 ){ + *pp = pUp->pNext; + pUp->pNext = pIter->pRbuUpdate; + pIter->pRbuUpdate = pUp; + *ppStmt = pUp->pUpdate; + return SQLITE_OK; + } + nUp++; + } + assert( pUp==0 || pUp->pNext==0 ); + + if( nUp>=SQLITE_RBU_UPDATE_CACHESIZE ){ + for(pp=&pIter->pRbuUpdate; *pp!=pUp; pp=&((*pp)->pNext)); + *pp = 0; + sqlite3_finalize(pUp->pUpdate); + pUp->pUpdate = 0; + }else{ + pUp = (RbuUpdateStmt*)rbuMalloc(p, sizeof(RbuUpdateStmt)+pIter->nTblCol+1); + } + + if( pUp ){ + char *zWhere = rbuObjIterGetWhere(p, pIter); + char *zSet = rbuObjIterGetSetlist(p, pIter, zMask); + char *zUpdate = 0; + + pUp->zMask = (char*)&pUp[1]; + memcpy(pUp->zMask, zMask, pIter->nTblCol); + pUp->pNext = pIter->pRbuUpdate; + pIter->pRbuUpdate = pUp; + + if( zSet ){ + const char *zPrefix = ""; + + if( pIter->eType!=RBU_PK_VTAB ) zPrefix = "rbu_imp_"; + zUpdate = sqlite3_mprintf("UPDATE \"%s%w\" SET %s WHERE %s", + zPrefix, pIter->zTbl, zSet, zWhere + ); + p->rc = prepareFreeAndCollectError( + p->dbMain, &pUp->pUpdate, &p->zErrmsg, zUpdate + ); + *ppStmt = pUp->pUpdate; + } + sqlite3_free(zWhere); + sqlite3_free(zSet); + } + + return p->rc; +} + +static sqlite3 *rbuOpenDbhandle( + sqlite3rbu *p, + const char *zName, + int bUseVfs +){ + sqlite3 *db = 0; + if( p->rc==SQLITE_OK ){ + const int flags = SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|SQLITE_OPEN_URI; + p->rc = sqlite3_open_v2(zName, &db, flags, bUseVfs ? p->zVfsName : 0); + if( p->rc ){ + p->zErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(db)); + sqlite3_close(db); + db = 0; + } + } + return db; +} + +/* +** Free an RbuState object allocated by rbuLoadState(). +*/ +static void rbuFreeState(RbuState *p){ + if( p ){ + sqlite3_free(p->zTbl); + sqlite3_free(p->zIdx); + sqlite3_free(p); + } +} + +/* +** Allocate an RbuState object and load the contents of the rbu_state +** table into it. Return a pointer to the new object. It is the +** responsibility of the caller to eventually free the object using +** sqlite3_free(). +** +** If an error occurs, leave an error code and message in the rbu handle +** and return NULL. +*/ +static RbuState *rbuLoadState(sqlite3rbu *p){ + RbuState *pRet = 0; + sqlite3_stmt *pStmt = 0; + int rc; + int rc2; + + pRet = (RbuState*)rbuMalloc(p, sizeof(RbuState)); + if( pRet==0 ) return 0; + + rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, + sqlite3_mprintf("SELECT k, v FROM %s.rbu_state", p->zStateDb) + ); + while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ + switch( sqlite3_column_int(pStmt, 0) ){ + case RBU_STATE_STAGE: + pRet->eStage = sqlite3_column_int(pStmt, 1); + if( pRet->eStage!=RBU_STAGE_OAL + && pRet->eStage!=RBU_STAGE_MOVE + && pRet->eStage!=RBU_STAGE_CKPT + ){ + p->rc = SQLITE_CORRUPT; + } + break; + + case RBU_STATE_TBL: + pRet->zTbl = rbuStrndup((char*)sqlite3_column_text(pStmt, 1), &rc); + break; + + case RBU_STATE_IDX: + pRet->zIdx = rbuStrndup((char*)sqlite3_column_text(pStmt, 1), &rc); + break; + + case RBU_STATE_ROW: + pRet->nRow = sqlite3_column_int(pStmt, 1); + break; + + case RBU_STATE_PROGRESS: + pRet->nProgress = sqlite3_column_int64(pStmt, 1); + break; + + case RBU_STATE_CKPT: + pRet->iWalCksum = sqlite3_column_int64(pStmt, 1); + break; + + case RBU_STATE_COOKIE: + pRet->iCookie = (u32)sqlite3_column_int64(pStmt, 1); + break; + + case RBU_STATE_OALSZ: + pRet->iOalSz = (u32)sqlite3_column_int64(pStmt, 1); + break; + + case RBU_STATE_PHASEONESTEP: + pRet->nPhaseOneStep = sqlite3_column_int64(pStmt, 1); + break; + + default: + rc = SQLITE_CORRUPT; + break; + } + } + rc2 = sqlite3_finalize(pStmt); + if( rc==SQLITE_OK ) rc = rc2; + + p->rc = rc; + return pRet; +} + + +/* +** Open the database handle and attach the RBU database as "rbu". If an +** error occurs, leave an error code and message in the RBU handle. +*/ +static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){ + assert( p->rc || (p->dbMain==0 && p->dbRbu==0) ); + assert( p->rc || rbuIsVacuum(p) || p->zTarget!=0 ); + + /* Open the RBU database */ + p->dbRbu = rbuOpenDbhandle(p, p->zRbu, 1); + + if( p->rc==SQLITE_OK && rbuIsVacuum(p) ){ + sqlite3_file_control(p->dbRbu, "main", SQLITE_FCNTL_RBUCNT, (void*)p); + if( p->zState==0 ){ + const char *zFile = sqlite3_db_filename(p->dbRbu, "main"); + p->zState = rbuMPrintf(p, "file://%s-vacuum?modeof=%s", zFile, zFile); + } + } + + /* If using separate RBU and state databases, attach the state database to + ** the RBU db handle now. */ + if( p->zState ){ + rbuMPrintfExec(p, p->dbRbu, "ATTACH %Q AS stat", p->zState); + memcpy(p->zStateDb, "stat", 4); + }else{ + memcpy(p->zStateDb, "main", 4); + } + +#if 0 + if( p->rc==SQLITE_OK && rbuIsVacuum(p) ){ + p->rc = sqlite3_exec(p->dbRbu, "BEGIN", 0, 0, 0); + } +#endif + + /* If it has not already been created, create the rbu_state table */ + rbuMPrintfExec(p, p->dbRbu, RBU_CREATE_STATE, p->zStateDb); + +#if 0 + if( rbuIsVacuum(p) ){ + if( p->rc==SQLITE_OK ){ + int rc2; + int bOk = 0; + sqlite3_stmt *pCnt = 0; + p->rc = prepareAndCollectError(p->dbRbu, &pCnt, &p->zErrmsg, + "SELECT count(*) FROM stat.sqlite_master" + ); + if( p->rc==SQLITE_OK + && sqlite3_step(pCnt)==SQLITE_ROW + && 1==sqlite3_column_int(pCnt, 0) + ){ + bOk = 1; + } + rc2 = sqlite3_finalize(pCnt); + if( p->rc==SQLITE_OK ) p->rc = rc2; + + if( p->rc==SQLITE_OK && bOk==0 ){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("invalid state database"); + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_exec(p->dbRbu, "COMMIT", 0, 0, 0); + } + } + } +#endif + + if( p->rc==SQLITE_OK && rbuIsVacuum(p) ){ + int bOpen = 0; + int rc; + p->nRbu = 0; + p->pRbuFd = 0; + rc = sqlite3_file_control(p->dbRbu, "main", SQLITE_FCNTL_RBUCNT, (void*)p); + if( rc!=SQLITE_NOTFOUND ) p->rc = rc; + if( p->eStage>=RBU_STAGE_MOVE ){ + bOpen = 1; + }else{ + RbuState *pState = rbuLoadState(p); + if( pState ){ + bOpen = (pState->eStage>=RBU_STAGE_MOVE); + rbuFreeState(pState); + } + } + if( bOpen ) p->dbMain = rbuOpenDbhandle(p, p->zRbu, p->nRbu<=1); + } + + p->eStage = 0; + if( p->rc==SQLITE_OK && p->dbMain==0 ){ + if( !rbuIsVacuum(p) ){ + p->dbMain = rbuOpenDbhandle(p, p->zTarget, 1); + }else if( p->pRbuFd->pWalFd ){ + if( pbRetry ){ + p->pRbuFd->bNolock = 0; + sqlite3_close(p->dbRbu); + sqlite3_close(p->dbMain); + p->dbMain = 0; + p->dbRbu = 0; + *pbRetry = 1; + return; + } + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("cannot vacuum wal mode database"); + }else{ + char *zTarget; + char *zExtra = 0; + if( strlen(p->zRbu)>=5 && 0==memcmp("file:", p->zRbu, 5) ){ + zExtra = &p->zRbu[5]; + while( *zExtra ){ + if( *zExtra++=='?' ) break; + } + if( *zExtra=='\0' ) zExtra = 0; + } + + zTarget = sqlite3_mprintf("file:%s-vacuum?rbu_memory=1%s%s", + sqlite3_db_filename(p->dbRbu, "main"), + (zExtra==0 ? "" : "&"), (zExtra==0 ? "" : zExtra) + ); + + if( zTarget==0 ){ + p->rc = SQLITE_NOMEM; + return; + } + p->dbMain = rbuOpenDbhandle(p, zTarget, p->nRbu<=1); + sqlite3_free(zTarget); + } + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_create_function(p->dbMain, + "rbu_tmp_insert", -1, SQLITE_UTF8, (void*)p, rbuTmpInsertFunc, 0, 0 + ); + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_create_function(p->dbMain, + "rbu_fossil_delta", 2, SQLITE_UTF8, 0, rbuFossilDeltaFunc, 0, 0 + ); + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_create_function(p->dbRbu, + "rbu_target_name", -1, SQLITE_UTF8, (void*)p, rbuTargetNameFunc, 0, 0 + ); + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_RBU, (void*)p); + } + rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlite_master"); + + /* Mark the database file just opened as an RBU target database. If + ** this call returns SQLITE_NOTFOUND, then the RBU vfs is not in use. + ** This is an error. */ + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_RBU, (void*)p); + } + + if( p->rc==SQLITE_NOTFOUND ){ + p->rc = SQLITE_ERROR; + p->zErrmsg = sqlite3_mprintf("rbu vfs not found"); + } +} + +/* +** This routine is a copy of the sqlite3FileSuffix3() routine from the core. +** It is a no-op unless SQLITE_ENABLE_8_3_NAMES is defined. +** +** If SQLITE_ENABLE_8_3_NAMES is set at compile-time and if the database +** filename in zBaseFilename is a URI with the "8_3_names=1" parameter and +** if filename in z[] has a suffix (a.k.a. "extension") that is longer than +** three characters, then shorten the suffix on z[] to be the last three +** characters of the original suffix. +** +** If SQLITE_ENABLE_8_3_NAMES is set to 2 at compile-time, then always +** do the suffix shortening regardless of URI parameter. +** +** Examples: +** +** test.db-journal => test.nal +** test.db-wal => test.wal +** test.db-shm => test.shm +** test.db-mj7f3319fa => test.9fa +*/ +static void rbuFileSuffix3(const char *zBase, char *z){ +#ifdef SQLITE_ENABLE_8_3_NAMES +#if SQLITE_ENABLE_8_3_NAMES<2 + if( sqlite3_uri_boolean(zBase, "8_3_names", 0) ) +#endif + { + int i, sz; + sz = (int)strlen(z)&0xffffff; + for(i=sz-1; i>0 && z[i]!='/' && z[i]!='.'; i--){} + if( z[i]=='.' && sz>i+4 ) memmove(&z[i+1], &z[sz-3], 4); + } +#endif +} + +/* +** Return the current wal-index header checksum for the target database +** as a 64-bit integer. +** +** The checksum is store in the first page of xShmMap memory as an 8-byte +** blob starting at byte offset 40. +*/ +static i64 rbuShmChecksum(sqlite3rbu *p){ + i64 iRet = 0; + if( p->rc==SQLITE_OK ){ + sqlite3_file *pDb = p->pTargetFd->pReal; + u32 volatile *ptr; + p->rc = pDb->pMethods->xShmMap(pDb, 0, 32*1024, 0, (void volatile**)&ptr); + if( p->rc==SQLITE_OK ){ + iRet = ((i64)ptr[10] << 32) + ptr[11]; + } + } + return iRet; +} + +/* +** This function is called as part of initializing or reinitializing an +** incremental checkpoint. +** +** It populates the sqlite3rbu.aFrame[] array with the set of +** (wal frame -> db page) copy operations required to checkpoint the +** current wal file, and obtains the set of shm locks required to safely +** perform the copy operations directly on the file-system. +** +** If argument pState is not NULL, then the incremental checkpoint is +** being resumed. In this case, if the checksum of the wal-index-header +** following recovery is not the same as the checksum saved in the RbuState +** object, then the rbu handle is set to DONE state. This occurs if some +** other client appends a transaction to the wal file in the middle of +** an incremental checkpoint. +*/ +static void rbuSetupCheckpoint(sqlite3rbu *p, RbuState *pState){ + + /* If pState is NULL, then the wal file may not have been opened and + ** recovered. Running a read-statement here to ensure that doing so + ** does not interfere with the "capture" process below. */ + if( pState==0 ){ + p->eStage = 0; + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_exec(p->dbMain, "SELECT * FROM sqlite_master", 0, 0, 0); + } + } + + /* Assuming no error has occurred, run a "restart" checkpoint with the + ** sqlite3rbu.eStage variable set to CAPTURE. This turns on the following + ** special behaviour in the rbu VFS: + ** + ** * If the exclusive shm WRITER or READ0 lock cannot be obtained, + ** the checkpoint fails with SQLITE_BUSY (normally SQLite would + ** proceed with running a passive checkpoint instead of failing). + ** + ** * Attempts to read from the *-wal file or write to the database file + ** do not perform any IO. Instead, the frame/page combinations that + ** would be read/written are recorded in the sqlite3rbu.aFrame[] + ** array. + ** + ** * Calls to xShmLock(UNLOCK) to release the exclusive shm WRITER, + ** READ0 and CHECKPOINT locks taken as part of the checkpoint are + ** no-ops. These locks will not be released until the connection + ** is closed. + ** + ** * Attempting to xSync() the database file causes an SQLITE_INTERNAL + ** error. + ** + ** As a result, unless an error (i.e. OOM or SQLITE_BUSY) occurs, the + ** checkpoint below fails with SQLITE_INTERNAL, and leaves the aFrame[] + ** array populated with a set of (frame -> page) mappings. Because the + ** WRITER, CHECKPOINT and READ0 locks are still held, it is safe to copy + ** data from the wal file into the database file according to the + ** contents of aFrame[]. + */ + if( p->rc==SQLITE_OK ){ + int rc2; + p->eStage = RBU_STAGE_CAPTURE; + rc2 = sqlite3_exec(p->dbMain, "PRAGMA main.wal_checkpoint=restart", 0, 0,0); + if( rc2!=SQLITE_INTERNAL ) p->rc = rc2; + } + + if( p->rc==SQLITE_OK && p->nFrame>0 ){ + p->eStage = RBU_STAGE_CKPT; + p->nStep = (pState ? pState->nRow : 0); + p->aBuf = rbuMalloc(p, p->pgsz); + p->iWalCksum = rbuShmChecksum(p); + } + + if( p->rc==SQLITE_OK ){ + if( p->nFrame==0 || (pState && pState->iWalCksum!=p->iWalCksum) ){ + p->rc = SQLITE_DONE; + p->eStage = RBU_STAGE_DONE; + } + } +} + +/* +** Called when iAmt bytes are read from offset iOff of the wal file while +** the rbu object is in capture mode. Record the frame number of the frame +** being read in the aFrame[] array. +*/ +static int rbuCaptureWalRead(sqlite3rbu *pRbu, i64 iOff, int iAmt){ + const u32 mReq = (1<mLock!=mReq ){ + pRbu->rc = SQLITE_BUSY; + return SQLITE_INTERNAL; + } + + pRbu->pgsz = iAmt; + if( pRbu->nFrame==pRbu->nFrameAlloc ){ + int nNew = (pRbu->nFrameAlloc ? pRbu->nFrameAlloc : 64) * 2; + RbuFrame *aNew; + aNew = (RbuFrame*)sqlite3_realloc64(pRbu->aFrame, nNew * sizeof(RbuFrame)); + if( aNew==0 ) return SQLITE_NOMEM; + pRbu->aFrame = aNew; + pRbu->nFrameAlloc = nNew; + } + + iFrame = (u32)((iOff-32) / (i64)(iAmt+24)) + 1; + if( pRbu->iMaxFrame