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70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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*********************************************************************
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*
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* Memory-mapped files
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*
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*********************************************************************
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*/
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#include "primpl.h"
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PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(
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PRFileDesc *fd,
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PRInt64 size,
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PRFileMapProtect prot)
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{
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PRFileMap *fmap;
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PR_ASSERT(prot == PR_PROT_READONLY || prot == PR_PROT_READWRITE
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|| prot == PR_PROT_WRITECOPY);
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fmap = PR_NEWZAP(PRFileMap);
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if (NULL == fmap) {
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PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
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return NULL;
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}
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fmap->fd = fd;
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fmap->prot = prot;
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if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {
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return fmap;
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} else {
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PR_DELETE(fmap);
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return NULL;
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}
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}
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PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)
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{
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return _PR_MD_GET_MEM_MAP_ALIGNMENT();
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}
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PR_IMPLEMENT(void *) PR_MemMap(
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PRFileMap *fmap,
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PROffset64 offset,
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PRUint32 len)
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{
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return _PR_MD_MEM_MAP(fmap, offset, len);
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}
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PR_IMPLEMENT(PRStatus) PR_MemUnmap(void *addr, PRUint32 len)
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{
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return _PR_MD_MEM_UNMAP(addr, len);
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}
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PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap *fmap)
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{
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return _PR_MD_CLOSE_FILE_MAP(fmap);
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}
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PR_IMPLEMENT(PRStatus) PR_SyncMemMap(
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PRFileDesc *fd,
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void *addr,
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PRUint32 len)
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{
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return _PR_MD_SYNC_MEM_MAP(fd, addr, len);
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}
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