00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
/* $NetBSD: rwlock_test.c,v 1.7 2014/12/10 04:37:53 christos Exp $ */
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/*
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* Copyright (C) 2004, 2005, 2007, 2013 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1998-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: rwlock_test.c,v 1.26 2007/06/19 23:46:59 tbox Exp */
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <isc/print.h>
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#include <isc/thread.h>
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#include <isc/rwlock.h>
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#include <isc/string.h>
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#include <isc/util.h>
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#ifdef WIN32
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#define sleep(x) Sleep(1000 * x)
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#endif
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#ifdef ISC_PLATFORM_USETHREADS
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isc_rwlock_t lock;
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static isc_threadresult_t
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#ifdef WIN32
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WINAPI
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#endif
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run1(void *arg) {
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char *message = arg;
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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return ((isc_threadresult_t)0);
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}
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static isc_threadresult_t
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#ifdef WIN32
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WINAPI
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#endif
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run2(void *arg) {
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char *message = arg;
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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printf("%s got WRITE lock\n", message);
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sleep(1);
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printf("%s giving up WRITE lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_write) ==
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ISC_R_SUCCESS);
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RUNTIME_CHECK(isc_rwlock_lock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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printf("%s got READ lock\n", message);
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sleep(1);
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printf("%s giving up READ lock\n", message);
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RUNTIME_CHECK(isc_rwlock_unlock(&lock, isc_rwlocktype_read) ==
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ISC_R_SUCCESS);
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return ((isc_threadresult_t)0);
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}
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int
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main(int argc, char *argv[]) {
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unsigned int nworkers;
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unsigned int i;
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isc_thread_t workers[100];
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char name[100];
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void *dupname;
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if (argc > 1)
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nworkers = atoi(argv[1]);
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else
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nworkers = 2;
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if (nworkers > 100)
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nworkers = 100;
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printf("%d workers\n", nworkers);
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RUNTIME_CHECK(isc_rwlock_init(&lock, 5, 10) == ISC_R_SUCCESS);
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for (i = 0; i < nworkers; i++) {
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sprintf(name, "%02u", i);
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dupname = strdup(name);
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RUNTIME_CHECK(dupname != NULL);
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if (i != 0 && i % 3 == 0)
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RUNTIME_CHECK(isc_thread_create(run1, dupname,
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&workers[i]) ==
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ISC_R_SUCCESS);
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else
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RUNTIME_CHECK(isc_thread_create(run2, dupname,
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&workers[i]) ==
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ISC_R_SUCCESS);
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}
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for (i = 0; i < nworkers; i++)
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(void)isc_thread_join(workers[i], NULL);
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isc_rwlock_destroy(&lock);
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return (0);
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}
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#else
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int
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main(int argc, char *argv[]) {
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UNUSED(argc);
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UNUSED(argv);
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fprintf(stderr, "This test requires threads.\n");
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return(1);
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}
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#endif
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