1 /*
2 * Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28 #include "config.h"
29 #include "SharedBuffer.h"
30
31 #include "PurgeableBuffer.h"
32
33 namespace WebCore {
34
SharedBuffer(CFDataRef cfData)35 SharedBuffer::SharedBuffer(CFDataRef cfData)
36 : m_size(0)
37 , m_cfData(cfData)
38 {
39 }
40
41 // Mac is a CF platform but has an even more efficient version of this method,
42 // so only use this version for non-Mac
43 #if !PLATFORM(MAC)
createCFData()44 CFDataRef SharedBuffer::createCFData()
45 {
46 if (m_cfData) {
47 CFRetain(m_cfData.get());
48 return m_cfData.get();
49 }
50
51 return CFDataCreate(0, reinterpret_cast<const UInt8*>(m_buffer.data()), m_buffer.size());
52 }
53 #endif
54
wrapCFData(CFDataRef data)55 PassRefPtr<SharedBuffer> SharedBuffer::wrapCFData(CFDataRef data)
56 {
57 return adoptRef(new SharedBuffer(data));
58 }
59
hasPlatformData() const60 bool SharedBuffer::hasPlatformData() const
61 {
62 return m_cfData;
63 }
64
platformData() const65 const char* SharedBuffer::platformData() const
66 {
67 return (const char*)CFDataGetBytePtr(m_cfData.get());
68 }
69
platformDataSize() const70 unsigned SharedBuffer::platformDataSize() const
71 {
72 return CFDataGetLength(m_cfData.get());
73 }
74
maybeTransferPlatformData()75 void SharedBuffer::maybeTransferPlatformData()
76 {
77 if (!m_cfData)
78 return;
79
80 ASSERT(!m_size);
81
82 append((const char*)CFDataGetBytePtr(m_cfData.get()), CFDataGetLength(m_cfData.get()));
83
84 m_cfData = 0;
85 }
86
clearPlatformData()87 void SharedBuffer::clearPlatformData()
88 {
89 m_cfData = 0;
90 }
91
92 }
93