mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
/*
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* Copyright (C) 2010-2019 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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*
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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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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSRunLoopTimer.h"
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#include <wtf/RefPtr.h>
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#if USE(CF)
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#include <CoreFoundation/CoreFoundation.h>
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#endif
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namespace JSC {
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class FullGCActivityCallback;
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class Heap;
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class JS_EXPORT_PRIVATE GCActivityCallback : public JSRunLoopTimer {
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public:
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using Base = JSRunLoopTimer;
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static RefPtr<FullGCActivityCallback> tryCreateFullTimer(Heap*);
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static RefPtr<GCActivityCallback> tryCreateEdenTimer(Heap*);
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GCActivityCallback(Heap*);
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void doWork(VM&) override;
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virtual void doCollection(VM&) = 0;
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void didAllocate(Heap&, size_t);
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void willCollect();
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void cancel();
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bool isEnabled() const { return m_enabled; }
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void setEnabled(bool enabled) { m_enabled = enabled; }
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static bool s_shouldCreateGCTimer;
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protected:
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virtual Seconds lastGCLength(Heap&) = 0;
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virtual double gcTimeSlice(size_t bytes) = 0;
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virtual double deathRate(Heap&) = 0;
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GCActivityCallback(VM& vm)
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: Base(vm)
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, m_enabled(true)
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, m_delay(s_decade)
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{
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}
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bool m_enabled;
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protected:
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void scheduleTimer(Seconds);
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private:
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Seconds m_delay;
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};
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} // namespace JSC
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