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Side by Side Diff: nspr/pr/src/io/prmmap.c

Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master
Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago
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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/. */
5
6 /*
7 *********************************************************************
8 *
9 * Memory-mapped files
10 *
11 *********************************************************************
12 */
13
14 #include "primpl.h"
15
16 PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(
17 PRFileDesc *fd,
18 PRInt64 size,
19 PRFileMapProtect prot)
20 {
21 PRFileMap *fmap;
22
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 }
39
40 PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)
41 {
42 return _PR_MD_GET_MEM_MAP_ALIGNMENT();
43 }
44
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 }
52
53 PR_IMPLEMENT(PRStatus) PR_MemUnmap(void *addr, PRUint32 len)
54 {
55 return _PR_MD_MEM_UNMAP(addr, len);
56 }
57
58 PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap *fmap)
59 {
60 return _PR_MD_CLOSE_FILE_MAP(fmap);
61 }
62
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 }
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