blob: 8740657804fba49e9ec11152027a30165dedc36a [file] [log] [blame]
/*
* 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 "core/html/parser/HTMLParserThread.h"
#include "platform/ThreadSafeFunctional.h"
#include "platform/WaitableEvent.h"
#include "platform/heap/SafePoint.h"
#include "public/platform/Platform.h"
#include "public/platform/WebTraceLocation.h"
namespace blink {
static HTMLParserThread* s_sharedThread = nullptr;
HTMLParserThread::HTMLParserThread()
{
}
HTMLParserThread::~HTMLParserThread()
{
}
void HTMLParserThread::init()
{
ASSERT(!s_sharedThread);
s_sharedThread = new HTMLParserThread;
}
void HTMLParserThread::setupHTMLParserThread()
{
ASSERT(m_thread);
m_thread->initialize();
}
void HTMLParserThread::shutdown()
{
ASSERT(isMainThread());
ASSERT(s_sharedThread);
// currentThread will always be non-null in production, but can be null in Chromium unit tests.
if (Platform::current()->currentThread() && s_sharedThread->m_thread) {
WaitableEvent waitableEvent;
s_sharedThread->postTask(threadSafeBind(&HTMLParserThread::cleanupHTMLParserThread, AllowCrossThreadAccess(s_sharedThread), AllowCrossThreadAccess(&waitableEvent)));
SafePointScope scope(BlinkGC::HeapPointersOnStack);
waitableEvent.wait();
}
delete s_sharedThread;
s_sharedThread = nullptr;
}
void HTMLParserThread::cleanupHTMLParserThread(WaitableEvent* waitableEvent)
{
m_thread->shutdown();
waitableEvent->signal();
}
HTMLParserThread* HTMLParserThread::shared()
{
return s_sharedThread;
}
void HTMLParserThread::postTask(std::unique_ptr<CrossThreadClosure> closure)
{
ASSERT(isMainThread());
if (!m_thread) {
m_thread = WebThreadSupportingGC::create("HTMLParserThread");
postTask(threadSafeBind(&HTMLParserThread::setupHTMLParserThread, AllowCrossThreadAccess(this)));
}
m_thread->postTask(BLINK_FROM_HERE, std::move(closure));
}
} // namespace blink