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/*
* Copyright (C) 2010 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.
*/
#ifndef GCActivityCallback_h
#define GCActivityCallback_h
#include "HeapTimer.h"
#include <wtf/RefPtr.h>
#if USE(CF)
#include <CoreFoundation/CoreFoundation.h>
#endif
namespace JSC {
class FullGCActivityCallback;
class Heap;
class JS_EXPORT_PRIVATE GCActivityCallback : public HeapTimer, public ThreadSafeRefCounted<GCActivityCallback> {
WTF_MAKE_FAST_ALLOCATED;
public:
static RefPtr<FullGCActivityCallback> createFullTimer(Heap*);
static RefPtr<GCActivityCallback> createEdenTimer(Heap*);
GCActivityCallback(Heap*);
virtual void doWork() override;
virtual void doCollection() = 0;
virtual void didAllocate(size_t);
virtual void willCollect();
virtual void cancel();
bool isEnabled() const { return m_enabled; }
void setEnabled(bool enabled) { m_enabled = enabled; }
static bool s_shouldCreateGCTimer;
#if USE(CF) || PLATFORM(EFL)
double nextFireTime() const { return m_nextFireTime; }
#endif
protected:
virtual double lastGCLength() = 0;
virtual double gcTimeSlice(size_t bytes) = 0;
virtual double deathRate() = 0;
#if USE(CF)
GCActivityCallback(VM* vm, CFRunLoopRef runLoop)
: HeapTimer(vm, runLoop)
, m_enabled(true)
, m_delay(s_decade)
{
}
#elif PLATFORM(EFL)
static constexpr double s_hour = 3600;
GCActivityCallback(VM* vm, bool flag)
: HeapTimer(vm)
, m_enabled(flag)
, m_delay(s_hour)
{
}
#elif PLATFORM(QT)
static constexpr double s_hour = 3600;
GCActivityCallback(VM* vm)
: HeapTimer(vm)
, m_enabled(true)
, m_delay(s_hour)
{
}
#elif USE(GLIB)
GCActivityCallback(VM* vm)
: HeapTimer(vm)
, m_enabled(true)
, m_delay(-1)
{
}
#else
GCActivityCallback(VM* vm)
: HeapTimer(vm)
, m_enabled(true)
{
}
#endif
bool m_enabled;
#if USE(CF)
protected:
GCActivityCallback(Heap*, CFRunLoopRef);
#endif
#if USE(CF) || USE(GLIB) || PLATFORM(QT)
protected:
void cancelTimer();
void scheduleTimer(double);
private:
double m_delay;
double m_nextFireTime { 0 };
#endif
};
} // namespace JSC
#endif
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