1 /*
2 * Copyright (C) 2012 Google 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #include "platform/graphics/ThreadSafeDataTransport.h"
29
30 #include "platform/SharedBuffer.h"
31
32 namespace blink {
33
ThreadSafeDataTransport()34 ThreadSafeDataTransport::ThreadSafeDataTransport()
35 : m_readBuffer(SharedBuffer::create())
36 , m_allDataReceived(false)
37 , m_readPosition(0)
38 {
39 }
40
~ThreadSafeDataTransport()41 ThreadSafeDataTransport::~ThreadSafeDataTransport()
42 {
43 }
44
setData(SharedBuffer * buffer,bool allDataReceived)45 void ThreadSafeDataTransport::setData(SharedBuffer* buffer, bool allDataReceived)
46 {
47 ASSERT(buffer->size() >= m_readPosition);
48 Vector<RefPtr<SharedBuffer> > newBufferQueue;
49
50 const char* segment = 0;
51 while (size_t length = buffer->getSomeData(segment, m_readPosition)) {
52 m_readPosition += length;
53 newBufferQueue.append(SharedBuffer::create(segment, length));
54 }
55
56 MutexLocker locker(m_mutex);
57 m_newBufferQueue.appendVector(newBufferQueue);
58 m_allDataReceived = allDataReceived;
59 }
60
data(SharedBuffer ** buffer,bool * allDataReceived)61 void ThreadSafeDataTransport::data(SharedBuffer** buffer, bool* allDataReceived)
62 {
63 ASSERT(buffer);
64 ASSERT(allDataReceived);
65 Vector<RefPtr<SharedBuffer> > newBufferQueue;
66 {
67 MutexLocker lock(m_mutex);
68 m_newBufferQueue.swap(newBufferQueue);
69 *allDataReceived = m_allDataReceived;
70 }
71 for (size_t i = 0; i < newBufferQueue.size(); ++i)
72 m_readBuffer->append(newBufferQueue[i].get());
73 *buffer = m_readBuffer.get();
74 }
75
hasNewData()76 bool ThreadSafeDataTransport::hasNewData()
77 {
78 MutexLocker lock(m_mutex);
79 return !m_newBufferQueue.isEmpty();
80 }
81
82 } // namespace blink
83