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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"
#include "core/html/parser/HTMLParserThread.h"
#include "platform/Task.h"
#include "platform/TaskSynchronizer.h"
#include "public/platform/Platform.h"
#include "wtf/PassOwnPtr.h"
namespace WebCore {
static HTMLParserThread* s_sharedThread = 0;
HTMLParserThread::HTMLParserThread()
{
}
HTMLParserThread::~HTMLParserThread()
{
}
void HTMLParserThread::init()
{
ASSERT(!s_sharedThread);
s_sharedThread = new HTMLParserThread;
}
void HTMLParserThread::setupHTMLParserThread()
{
m_pendingGCRunner = adoptPtr(new PendingGCRunner);
m_messageLoopInterruptor = adoptPtr(new MessageLoopInterruptor(&platformThread()));
platformThread().addTaskObserver(m_pendingGCRunner.get());
ThreadState::attach();
ThreadState::current()->addInterruptor(m_messageLoopInterruptor.get());
}
void HTMLParserThread::shutdown()
{
ASSERT(s_sharedThread);
// currentThread will always be non-null in production, but can be null in Chromium unit tests.
if (blink::Platform::current()->currentThread() && s_sharedThread->isRunning()) {
TaskSynchronizer taskSynchronizer;
s_sharedThread->postTask(WTF::bind(&HTMLParserThread::cleanupHTMLParserThread, s_sharedThread, &taskSynchronizer));
taskSynchronizer.waitForTaskCompletion();
}
delete s_sharedThread;
s_sharedThread = 0;
}
void HTMLParserThread::cleanupHTMLParserThread(TaskSynchronizer* taskSynchronizer)
{
ThreadState::current()->removeInterruptor(m_messageLoopInterruptor.get());
ThreadState::detach();
platformThread().removeTaskObserver(m_pendingGCRunner.get());
m_pendingGCRunner = nullptr;
m_messageLoopInterruptor = nullptr;
taskSynchronizer->taskCompleted();
}
HTMLParserThread* HTMLParserThread::shared()
{
return s_sharedThread;
}
blink::WebThread& HTMLParserThread::platformThread()
{
if (!isRunning()) {
m_thread = adoptPtr(blink::Platform::current()->createThread("HTMLParserThread"));
postTask(WTF::bind(&HTMLParserThread::setupHTMLParserThread, this));
}
return *m_thread;
}
bool HTMLParserThread::isRunning()
{
return !!m_thread;
}
void HTMLParserThread::postTask(const Closure& closure)
{
platformThread().postTask(new Task(closure));
}
} // namespace WebCore
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