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/*
* Copyright (C) 2007 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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 "Timer.h"
#include <JavaScriptCore/DeleteAllCodeEffort.h>
#include <wtf/Forward.h>
#include <wtf/Noncopyable.h>
#include <wtf/TZoneMalloc.h>
namespace JSC {
class VM;
}
namespace WebCore {
class GCController {
WTF_MAKE_TZONE_ALLOCATED(GCController);
WTF_MAKE_NONCOPYABLE(GCController);
friend class WTF::NeverDestroyed<GCController>;
public:
WEBCORE_EXPORT static GCController& singleton();
WEBCORE_EXPORT static void dumpHeapForVM(JSC::VM&);
// Do nothing since this is a singleton.
void ref() const { }
void deref() const { }
WEBCORE_EXPORT void garbageCollectSoon();
WEBCORE_EXPORT void garbageCollectNow(); // It's better to call garbageCollectSoon, unless you have a specific reason not to.
WEBCORE_EXPORT void garbageCollectNowIfNotDoneRecently();
void garbageCollectOnNextRunLoop();
WEBCORE_EXPORT void garbageCollectOnAlternateThreadForDebugging(bool waitUntilDone); // Used for stress testing.
WEBCORE_EXPORT void setJavaScriptGarbageCollectorTimerEnabled(bool);
WEBCORE_EXPORT void deleteAllCode(JSC::DeleteAllCodeEffort);
WEBCORE_EXPORT void deleteAllLinkedCode(JSC::DeleteAllCodeEffort);
WEBCORE_EXPORT void dumpHeap();
private:
GCController(); // Use singleton() instead.
void gcTimerFired();
Timer m_GCTimer;
};
} // namespace WebCore
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