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* Copyright (C) 2017 Apple Inc. All rights reserved.
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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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* 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 in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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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#include "JSRunLoopTimer.h"
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#include <wtf/HashMap.h>
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#include <wtf/Vector.h>
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class PromiseTimer : public JSRunLoopTimer {
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using Base = JSRunLoopTimer;
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void doWork(VM&) override;
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void addPendingPromise(VM&, JSPromise*, Vector<Strong<JSCell>>&& dependencies);
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JS_EXPORT_PRIVATE bool hasPendingPromise(JSPromise* ticket);
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JS_EXPORT_PRIVATE bool hasDependancyInPendingPromise(JSPromise* ticket, JSCell* dependency);
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// JSPromise should handle canceling when the promise is resolved or rejected.
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bool cancelPendingPromise(JSPromise*);
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using Task = Function<void()>;
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void scheduleWorkSoon(JSPromise*, Task&&);
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void stopRunningTasks() { m_runTasks = false; }
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JS_EXPORT_PRIVATE void runRunLoop();
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static Ref<PromiseTimer> create(VM& vm)
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return adoptRef(*new PromiseTimer(vm));
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HashMap<JSPromise*, Vector<Strong<JSCell>>> m_pendingPromises;
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bool m_runTasks { true };
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bool m_shouldStopRunLoopWhenAllPromisesFinish { false };
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bool m_currentlyRunningTask { false };
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Vector<std::tuple<JSPromise*, Task>> m_tasks;