/*
 * 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.
 */

#ifndef GCController_h
#define GCController_h

#if USE(CF)
#include <wtf/FastMalloc.h>
#include <wtf/Noncopyable.h>
#else
#include "Timer.h"
#endif

namespace WebCore {

    class GCController {
        WTF_MAKE_NONCOPYABLE(GCController); WTF_MAKE_FAST_ALLOCATED;
        friend GCController& gcController();

    public:
        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 garbageCollectOnAlternateThreadForDebugging(bool waitUntilDone); // Used for stress testing.
        WEBCORE_EXPORT void releaseExecutableMemory();
        WEBCORE_EXPORT void setJavaScriptGarbageCollectorTimerEnabled(bool);
        WEBCORE_EXPORT void discardAllCompiledCode();

    private:
        GCController(); // Use gcController() instead

#if !USE(CF)
        void gcTimerFired(Timer<GCController>*);
        Timer<GCController> m_GCTimer;
#endif
    };

    // Function to obtain the global GC controller.
    WEBCORE_EXPORT GCController& gcController() PURE_FUNCTION;

} // namespace WebCore

#endif // GCController_h
