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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Google Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/core/dom/Microtask.h"
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#include "base/bind.h"
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#include "base/trace_event/trace_event.h"
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#include "sky/engine/public/platform/WebThread.h"
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#include "sky/engine/wtf/OwnPtr.h"
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#include "sky/engine/wtf/Vector.h"
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namespace blink {
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namespace {
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class Task : public WebThread::Task {
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public:
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explicit Task(const base::Closure& closure)
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: m_closure(closure)
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{
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}
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virtual void run() override
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{
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m_closure.Run();
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}
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private:
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base::Closure m_closure;
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};
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}
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// TODO(dart): Integrate this microtask queue with darts.
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typedef Vector<OwnPtr<WebThread::Task> > MicrotaskQueue;
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static MicrotaskQueue& microtaskQueue()
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{
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DEFINE_STATIC_LOCAL(OwnPtr<MicrotaskQueue>, queue, (adoptPtr(new MicrotaskQueue())));
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return *queue;
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}
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void Microtask::performCheckpoint()
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{
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MicrotaskQueue& queue = microtaskQueue();
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while(!queue.isEmpty()) {
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TRACE_EVENT0("sky", "Microtask::performCheckpoint");
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MicrotaskQueue local;
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swap(queue, local);
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for (const auto& task : local)
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task->run();
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}
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}
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void Microtask::enqueueMicrotask(PassOwnPtr<WebThread::Task> callback)
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{
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microtaskQueue().append(callback);
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}
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void Microtask::enqueueMicrotask(const base::Closure& callback)
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{
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enqueueMicrotask(adoptPtr(new Task(callback)));
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}
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} // namespace blink
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