/*
 * Copyright (C) 2012 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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 "MemoryUsageSupport.h"

#include <SkGraphics.h>
#include <public/Platform.h>
#include <wtf/OwnPtr.h>

namespace WebCore {

int MemoryUsageSupport::memoryUsageMB()
{
    return WebKit::Platform::current()->memoryUsageMB();
}

int MemoryUsageSupport::actualMemoryUsageMB()
{
    return WebKit::Platform::current()->actualMemoryUsageMB();
}

int MemoryUsageSupport::lowMemoryUsageMB()
{
    return WebKit::Platform::current()->lowMemoryUsageMB();
}

int MemoryUsageSupport::highMemoryUsageMB()
{
    return WebKit::Platform::current()->highMemoryUsageMB();
}

int MemoryUsageSupport::highUsageDeltaMB()
{
    return WebKit::Platform::current()->highUsageDeltaMB();
}

bool MemoryUsageSupport::processMemorySizesInBytes(size_t* privateBytes, size_t* sharedBytes)
{
    return WebKit::Platform::current()->processMemorySizesInBytes(privateBytes, sharedBytes);
}

void MemoryUsageSupport::requestProcessMemorySizes(PassOwnPtr<WebCore::MemoryUsageSupport::ProcessMemorySizesCallback> requestCallback)
{
    class ProcessMemorySizesCallbackImpl : public WebKit::Platform::ProcessMemorySizesCallback {
    public:
        ProcessMemorySizesCallbackImpl(PassOwnPtr<WebCore::MemoryUsageSupport::ProcessMemorySizesCallback> callback) :
            m_callback(callback) { }
        virtual void dataReceived(size_t privateBytes, size_t sharedBytes)
        {
            m_callback->dataReceived(privateBytes, sharedBytes);
        }
    private:
        OwnPtr<WebCore::MemoryUsageSupport::ProcessMemorySizesCallback> m_callback;
    };
    WebKit::Platform::ProcessMemorySizesCallback* callback = new ProcessMemorySizesCallbackImpl(requestCallback);
    WebKit::Platform::current()->requestProcessMemorySizes(callback);
}

void MemoryUsageSupport::memoryUsageByComponents(Vector<ComponentInfo>& components)
{
    size_t size = SkGraphics::GetFontCacheUsed();
    components.append(ComponentInfo("GlyphCache", size));

    if (WebKit::Platform::current()->memoryAllocatorWasteInBytes(&size))
        components.append(ComponentInfo("MallocWaste", size));
}

} // namespace WebCore