58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/*
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* Copyright (C) 2014 Yoav Weiss (yoav@yoav.ws)
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* Copyright (C) 2015 Akamai Technologies Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include <wtf/Forward.h>
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#include <wtf/Vector.h>
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namespace JSC {
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class VM;
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} // namespace JSC
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namespace WebCore {
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class EventLoopTask;
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class MicrotaskQueue final {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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WEBCORE_EXPORT MicrotaskQueue(JSC::VM&);
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WEBCORE_EXPORT ~MicrotaskQueue();
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WEBCORE_EXPORT void append(std::unique_ptr<EventLoopTask>&&);
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WEBCORE_EXPORT void performMicrotaskCheckpoint();
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WEBCORE_EXPORT void addCheckpointTask(std::unique_ptr<EventLoopTask>&&);
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private:
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JSC::VM& vm() const { return m_vm.get(); }
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bool m_performingMicrotaskCheckpoint { false };
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Vector<std::unique_ptr<EventLoopTask>> m_microtaskQueue;
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// For the main thread the VM lives forever. For workers it's lifetime is tied to our owning WorkerGlobalScope. Regardless, we retain the VM here to be safe.
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Ref<JSC::VM> m_vm;
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Vector<std::unique_ptr<EventLoopTask>> m_checkpointTasks;
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};
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} // namespace WebCore
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