The Tor Browser: nsprpub/pr/src/io/prmmap.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /*

     7  *********************************************************************

     8  *

     9  * Memory-mapped files

    10  *

    11  *********************************************************************

    12  */

    14 #include "primpl.h"

    16 PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(

    17     PRFileDesc *fd,

    18     PRInt64 size,

    19     PRFileMapProtect prot)

    20 {

    21     PRFileMap *fmap;

    23     PR_ASSERT(prot == PR_PROT_READONLY || prot == PR_PROT_READWRITE

    24             || prot == PR_PROT_WRITECOPY);

    25     fmap = PR_NEWZAP(PRFileMap);

    26     if (NULL == fmap) {

    27 	PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);

    28 	return NULL;

    29     }

    30     fmap->fd = fd;

    31     fmap->prot = prot;

    32     if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {

    33 	return fmap;

    34     } else {

    35 	PR_DELETE(fmap);

    36 	return NULL;

    37     }

    38 }

    40 PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)

    41 {

    42     return _PR_MD_GET_MEM_MAP_ALIGNMENT();

    43 }

    45 PR_IMPLEMENT(void *) PR_MemMap(

    46     PRFileMap *fmap,

    47     PROffset64 offset,

    48     PRUint32 len)

    49 {

    50     return _PR_MD_MEM_MAP(fmap, offset, len);

    51 }

    53 PR_IMPLEMENT(PRStatus) PR_MemUnmap(void *addr, PRUint32 len)

    54 {

    55     return _PR_MD_MEM_UNMAP(addr, len);

    56 }

    58 PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap *fmap)

    59 {

    60     return _PR_MD_CLOSE_FILE_MAP(fmap);

    61 }

    63 PR_IMPLEMENT(PRStatus) PR_SyncMemMap(

    64     PRFileDesc *fd,

    65     void *addr,

    66     PRUint32 len)

    67 {

    68   return _PR_MD_SYNC_MEM_MAP(fd, addr, len);

    69 }

The Tor Browser / file revision