/*

 * Copyright (C) 2007, 2008 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 COMPUTER, 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 COMPUTER, 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. 

 */

#include "config.h"

#include "WebKitDLL.h"

#include "WebJavaScriptCollector.h"

#pragma warning(push, 0)

#include <JavaScriptCore/JSGlobalData.h>

#include <JavaScriptCore/collector.h>

#include <WebCore/GCController.h>

#include <WebCore/JSDOMWindow.h>

#include <runtime/JSLock.h>

#pragma warning(pop)

using namespace JSC;

using namespace WebCore;

// WebJavaScriptCollector ---------------------------------------------------------------------------

WebJavaScriptCollector::WebJavaScriptCollector()

: m_refCount(0)

{

    gClassCount++;

    gClassNameCount.add("WebJavaScriptCollector");

}

WebJavaScriptCollector::~WebJavaScriptCollector()

{

    gClassCount--;

    gClassNameCount.remove("WebJavaScriptCollector");

}

WebJavaScriptCollector* WebJavaScriptCollector::createInstance()

{

    WebJavaScriptCollector* instance = new WebJavaScriptCollector();

    instance->AddRef();

    return instance;

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);

    else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))

        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete(this);

    return newRef;

}

// IWebJavaScriptCollector ------------------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()

{

    gcController().garbageCollectNow();

    return S_OK;

}

HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread( 

    /* [in] */ BOOL waitUntilDone)

{

    gcController().garbageCollectOnAlternateThreadForDebugging(!!waitUntilDone);

    return S_OK;

}

HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount( 

    /* [retval][out] */ UINT* count)

{

    if (!count) {

        ASSERT_NOT_REACHED();

        return E_POINTER;

    }

    JSLock lock(SilenceAssertionsOnly);

    *count = (UINT)JSDOMWindow::commonJSGlobalData()->heap.objectCount();

    return S_OK;

}