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