1 : /* -*- Mode: C++; tab-width: 2; 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 mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Mozilla Foundation.
19 : * Portions created by the Initial Developer are Copyright (C) 2009
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Jim Mathies <jmathies@mozilla.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "SharedDIB.h"
40 :
41 : namespace mozilla {
42 : namespace gfx {
43 :
44 0 : SharedDIB::SharedDIB() :
45 0 : mShMem(nsnull)
46 : {
47 0 : }
48 :
49 0 : SharedDIB::~SharedDIB()
50 : {
51 0 : Close();
52 0 : }
53 :
54 : nsresult
55 0 : SharedDIB::Create(PRUint32 aSize)
56 : {
57 0 : Close();
58 :
59 0 : mShMem = new base::SharedMemory();
60 0 : if (!mShMem || !mShMem->Create("", false, false, aSize))
61 0 : return NS_ERROR_OUT_OF_MEMORY;
62 :
63 0 : return NS_OK;
64 : }
65 :
66 : bool
67 0 : SharedDIB::IsValid()
68 : {
69 0 : if (!mShMem)
70 0 : return false;
71 :
72 0 : return mShMem->IsHandleValid(mShMem->handle());
73 : }
74 :
75 : nsresult
76 0 : SharedDIB::Close()
77 : {
78 0 : delete mShMem;
79 :
80 0 : mShMem = nsnull;
81 :
82 0 : return NS_OK;
83 : }
84 :
85 : nsresult
86 0 : SharedDIB::Attach(Handle aHandle, PRUint32 aSize)
87 : {
88 0 : Close();
89 :
90 0 : mShMem = new base::SharedMemory(aHandle, false);
91 0 : if(!mShMem)
92 0 : return NS_ERROR_OUT_OF_MEMORY;
93 :
94 0 : return NS_OK;
95 : }
96 :
97 : nsresult
98 0 : SharedDIB::ShareToProcess(base::ProcessHandle aChildProcess, Handle *aChildHandle)
99 : {
100 0 : if (!mShMem)
101 0 : return NS_ERROR_UNEXPECTED;
102 :
103 0 : if (!mShMem->ShareToProcess(aChildProcess, aChildHandle))
104 0 : return NS_ERROR_UNEXPECTED;
105 :
106 0 : return NS_OK;
107 : }
108 :
109 : } // gfx
110 : } // mozilla
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