1 /*
2 * Copyright (C) 2008 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_cfData(cfData)
37 {
38 }
39
40 // Mac is a CF platform but has an even more efficient version of this method,
41 // so only use this version for non-Mac
42 #if !PLATFORM(MAC)
createCFData()43 CFDataRef SharedBuffer::createCFData()
44 {
45 if (m_cfData) {
46 CFRetain(m_cfData.get());
47 return m_cfData.get();
48 }
49
50 return CFDataCreate(0, reinterpret_cast<const UInt8*>(m_buffer.data()), m_buffer.size());
51 }
52 #endif
53
wrapCFData(CFDataRef data)54 PassRefPtr<SharedBuffer> SharedBuffer::wrapCFData(CFDataRef data)
55 {
56 return adoptRef(new SharedBuffer(data));
57 }
58
hasPlatformData() const59 bool SharedBuffer::hasPlatformData() const
60 {
61 return m_cfData;
62 }
63
platformData() const64 const char* SharedBuffer::platformData() const
65 {
66 return (const char*)CFDataGetBytePtr(m_cfData.get());
67 }
68
platformDataSize() const69 unsigned SharedBuffer::platformDataSize() const
70 {
71 return CFDataGetLength(m_cfData.get());
72 }
73
maybeTransferPlatformData()74 void SharedBuffer::maybeTransferPlatformData()
75 {
76 if (!m_cfData)
77 return;
78
79 ASSERT(m_buffer.size() == 0);
80
81 m_buffer.append((const char*)CFDataGetBytePtr(m_cfData.get()), CFDataGetLength(m_cfData.get()));
82
83 m_cfData = 0;
84 }
85
clearPlatformData()86 void SharedBuffer::clearPlatformData()
87 {
88 m_cfData = 0;
89 }
90
91 }
92