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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "platform/graphics/ThreadSafeDataTransport.h"
#include "platform/SharedBuffer.h"
namespace blink {
ThreadSafeDataTransport::ThreadSafeDataTransport()
: m_readBuffer(SharedBuffer::create())
, m_allDataReceived(false)
, m_readPosition(0)
{
}
ThreadSafeDataTransport::~ThreadSafeDataTransport()
{
}
void ThreadSafeDataTransport::setData(SharedBuffer* buffer, bool allDataReceived)
{
ASSERT(buffer->size() >= m_readPosition);
Vector<RefPtr<SharedBuffer> > newBufferQueue;
const char* segment = 0;
while (size_t length = buffer->getSomeData(segment, m_readPosition)) {
m_readPosition += length;
newBufferQueue.append(SharedBuffer::create(segment, length));
}
MutexLocker locker(m_mutex);
m_newBufferQueue.appendVector(newBufferQueue);
newBufferQueue.clear();
m_allDataReceived = allDataReceived;
}
void ThreadSafeDataTransport::data(SharedBuffer** buffer, bool* allDataReceived)
{
ASSERT(buffer);
ASSERT(allDataReceived);
Vector<RefPtr<SharedBuffer> > newBufferQueue;
{
MutexLocker lock(m_mutex);
m_newBufferQueue.swap(newBufferQueue);
*allDataReceived = m_allDataReceived;
}
for (size_t i = 0; i < newBufferQueue.size(); ++i)
m_readBuffer->append(newBufferQueue[i].get());
*buffer = m_readBuffer.get();
}
bool ThreadSafeDataTransport::hasNewData()
{
MutexLocker lock(m_mutex);
return !m_newBufferQueue.isEmpty();
}
} // namespace blink
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