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/*
* Copyright (C) 2010-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSRunLoopTimer.h"
#include "Synchronousness.h"
#include <wtf/RefPtr.h>
namespace JSC {
class FullGCActivityCallback;
class Heap;
class GCActivityCallback : public JSRunLoopTimer {
public:
using Base = JSRunLoopTimer;
JS_EXPORT_PRIVATE GCActivityCallback(Heap&, Synchronousness);
JS_EXPORT_PRIVATE ~GCActivityCallback();
JS_EXPORT_PRIVATE void doWork(VM&) override;
virtual void doCollection(VM&) = 0;
void didAllocate(Heap&, size_t);
void willCollect();
JS_EXPORT_PRIVATE void cancel();
bool isEnabled() const { return m_enabled; }
void setEnabled(bool enabled) { m_enabled = enabled; }
bool didGCRecently() const { return m_didGCRecently; }
void setDidGCRecently(bool didGCRecently) { m_didGCRecently = didGCRecently; }
static bool s_shouldCreateGCTimer;
protected:
virtual Seconds lastGCLength(Heap&) = 0;
virtual double gcTimeSlice(size_t bytes) = 0;
virtual double deathRate(Heap&) = 0;
JS_EXPORT_PRIVATE void scheduleTimer(Seconds);
GCActivityCallback(VM&, Synchronousness);
Synchronousness m_synchronousness { Synchronousness::Async };
bool m_enabled { true };
bool m_didGCRecently { false };
Seconds m_delay { s_decade };
};
} // namespace JSC
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