108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
/*
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* Copyright (C) 2008, 2013 Apple 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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* 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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*
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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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*
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*/
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#pragma once
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#include "ActiveDOMObject.h"
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#include "Timer.h"
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#include <wtf/Function.h>
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#include <wtf/Seconds.h>
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namespace WebCore {
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class SuspendableTimerBase : private TimerBase, public ActiveDOMObject {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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explicit SuspendableTimerBase(ScriptExecutionContext*);
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virtual ~SuspendableTimerBase();
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// A hook for derived classes to perform cleanup.
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virtual void didStop();
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// Part of TimerBase interface used by SuspendableTimerBase clients, modified to work when suspended.
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bool isActive() const { return TimerBase::isActive() || (m_suspended && m_savedIsActive); }
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bool isSuspended() const { return m_suspended; }
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Seconds repeatInterval() const;
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void startRepeating(Seconds repeatInterval);
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void startOneShot(Seconds interval);
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void augmentFireInterval(Seconds delta);
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void augmentRepeatInterval(Seconds delta);
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using TimerBase::didChangeAlignmentInterval;
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using TimerBase::operator new;
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using TimerBase::operator delete;
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void cancel(); // Equivalent to TimerBase::stop(), whose name conflicts with ActiveDOMObject::stop().
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private:
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void fired() override = 0;
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// ActiveDOMObject API.
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bool virtualHasPendingActivity() const final;
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void stop() final;
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void suspend(ReasonForSuspension) final;
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void resume() final;
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Seconds m_savedNextFireInterval;
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Seconds m_savedRepeatInterval;
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bool m_suspended { false };
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bool m_savedIsActive { false };
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};
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class SuspendableTimer final : public SuspendableTimerBase {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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template <typename TimerFiredClass, typename TimerFiredBaseClass>
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SuspendableTimer(ScriptExecutionContext* context, TimerFiredClass& object, void (TimerFiredBaseClass::*function)())
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: SuspendableTimerBase(context)
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, m_function(std::bind(function, &object))
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{
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}
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SuspendableTimer(ScriptExecutionContext* context, WTF::Function<void ()>&& function)
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: SuspendableTimerBase(context)
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, m_function(WTFMove(function))
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{
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}
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private:
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void fired() final
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{
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m_function();
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}
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const char* activeDOMObjectName() const final;
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WTF::Function<void ()> m_function;
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};
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} // namespace WebCore
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