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* Copyright (C) 2014 Google Inc. All rights reserved.
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* modification, are permitted provided that the following conditions are
* met:
*
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* in the documentation and/or other materials provided with the
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*
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*/
#ifndef MessageLoopInterruptor_h
#define MessageLoopInterruptor_h
#include "platform/heap/ThreadState.h"
#include "public/platform/WebThread.h"
namespace WebCore {
class MessageLoopInterruptor : public ThreadState::Interruptor {
public:
explicit MessageLoopInterruptor(blink::WebThread* thread) : m_thread(thread) { }
virtual void requestInterrupt() OVERRIDE
{
// GCTask has an empty run() method. Its only purpose is to guarantee
// that MessageLoop will have a task to process which will result
// in PendingGCRunner::didProcessTask being executed.
m_thread->postTask(new GCTask);
}
virtual void clearInterrupt() OVERRIDE { }
private:
class GCTask : public blink::WebThread::Task {
public:
virtual ~GCTask() { }
virtual void run() OVERRIDE
{
// Don't do anything here because we don't know if this is
// a nested event loop or not. PendingGCRunner::didProcessTask
// will enter correct safepoint for us.
// We are not calling onInterrupted() because that always
// conservatively enters safepoint with pointers on stack.
}
};
blink::WebThread* m_thread;
};
}
#endif