1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Netscape Portable Runtime (NSPR).
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998-2000
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either the GNU General Public License Version 2 or later (the "GPL"), or
26 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
28 : * of those above. If you wish to allow use of your version of this file only
29 : * under the terms of either the GPL or the LGPL, and not to allow others to
30 : * use your version of this file under the terms of the MPL, indicate your
31 : * decision by deleting the provisions above and replace them with the notice
32 : * and other provisions required by the GPL or the LGPL. If you do not delete
33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : /*
39 : *********************************************************************
40 : *
41 : * Memory-mapped files
42 : *
43 : *********************************************************************
44 : */
45 :
46 : #include "primpl.h"
47 :
48 13620 : PR_IMPLEMENT(PRFileMap *) PR_CreateFileMap(
49 : PRFileDesc *fd,
50 : PRInt64 size,
51 : PRFileMapProtect prot)
52 : {
53 : PRFileMap *fmap;
54 :
55 13620 : PR_ASSERT(prot == PR_PROT_READONLY || prot == PR_PROT_READWRITE
56 : || prot == PR_PROT_WRITECOPY);
57 13620 : fmap = PR_NEWZAP(PRFileMap);
58 13620 : if (NULL == fmap) {
59 0 : PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
60 0 : return NULL;
61 : }
62 13620 : fmap->fd = fd;
63 13620 : fmap->prot = prot;
64 13620 : if (_PR_MD_CREATE_FILE_MAP(fmap, size) == PR_SUCCESS) {
65 13620 : return fmap;
66 : } else {
67 0 : PR_DELETE(fmap);
68 0 : return NULL;
69 : }
70 : }
71 :
72 230 : PR_IMPLEMENT(PRInt32) PR_GetMemMapAlignment(void)
73 : {
74 230 : return _PR_MD_GET_MEM_MAP_ALIGNMENT();
75 : }
76 :
77 13620 : PR_IMPLEMENT(void *) PR_MemMap(
78 : PRFileMap *fmap,
79 : PROffset64 offset,
80 : PRUint32 len)
81 : {
82 13620 : return _PR_MD_MEM_MAP(fmap, offset, len);
83 : }
84 :
85 13619 : PR_IMPLEMENT(PRStatus) PR_MemUnmap(void *addr, PRUint32 len)
86 : {
87 13619 : return _PR_MD_MEM_UNMAP(addr, len);
88 : }
89 :
90 13620 : PR_IMPLEMENT(PRStatus) PR_CloseFileMap(PRFileMap *fmap)
91 : {
92 13620 : return _PR_MD_CLOSE_FILE_MAP(fmap);
93 : }
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