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