d0becf600d
. test74 for mmap functionality . vm: add a mem_file memory type that specifies an mmap()ped memory range, backed by a file . add fdref, an object that keeps track of FD references within VM per process and so knows how to de-duplicate the use of FD's by various mmap()ped ranges; there can be many more than there can be FD's Change-Id: I640b1126cdaa522a0560301cf6732b7661555672
38 lines
861 B
C
38 lines
861 B
C
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#ifndef _VMPROC_H
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#define _VMPROC_H 1
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#include <minix/bitmap.h>
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#include <machine/archtypes.h>
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#include "pt.h"
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#include "vm.h"
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#include "regionavl.h"
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struct vmproc;
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struct vmproc {
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int vm_flags;
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endpoint_t vm_endpoint;
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pt_t vm_pt; /* page table data */
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struct boot_image *vm_boot; /* if boot time process */
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/* Regions in virtual address space. */
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region_avl vm_regions_avl;
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vir_bytes vm_region_top; /* highest vaddr last inserted */
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bitchunk_t vm_call_mask[VM_CALL_MASK_SIZE];
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int vm_slot; /* process table slot */
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struct fdref *fdrefs;
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#if VMSTATS
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int vm_bytecopies;
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#endif
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};
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/* Bits for vm_flags */
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#define VMF_INUSE 0x001 /* slot contains a process */
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#define VMF_EXITING 0x002 /* PM is cleaning up this process */
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#define VMF_WATCHEXIT 0x008 /* Store in queryexit table */
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#define VMF_EXECING 0x010 /* exec() in progress */
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#endif
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