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/*
* Copyright (C) 2013 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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"
#if ENABLE(THREADED_HTML_PARSER)
#include "HTMLParserThread.h"
namespace WebCore {
HTMLParserThread::HTMLParserThread()
: m_threadID(0)
{
}
HTMLParserThread::~HTMLParserThread()
{
ASSERT(m_queue.killed());
}
bool HTMLParserThread::start()
{
MutexLocker lock(m_threadCreationMutex);
if (m_threadID)
return true;
m_threadID = createThread(HTMLParserThread::threadStart, this, "WebCore: HTMLParser");
return m_threadID;
}
void HTMLParserThread::stop()
{
m_queue.kill();
waitForThreadCompletion(m_threadID);
}
HTMLParserThread* HTMLParserThread::shared()
{
static HTMLParserThread* thread;
if (!thread) {
thread = HTMLParserThread::create().leakPtr();
thread->start();
}
return thread;
}
void HTMLParserThread::postTask(const Closure& function)
{
m_queue.append(adoptPtr(new Closure(function)));
}
void HTMLParserThread::threadStart(void* arg)
{
HTMLParserThread* thread = static_cast<HTMLParserThread*>(arg);
thread->runLoop();
}
void HTMLParserThread::runLoop()
{
{
// Wait for HTMLParserThread::start() to complete to have m_threadID
// established before starting the main loop.
MutexLocker lock(m_threadCreationMutex);
}
while (OwnPtr<Closure> function = m_queue.waitForMessage())
(*function)();
// stop() will wait to join the thread, so we do not detach here.
}
} // namespace WebCore
#endif // ENABLE(THREADED_HTML_PARSER)
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