source: webkit/trunk/Source/WebCore/testing/MallocStatistics.h

/*
 * Copyright (C) 2012 SoftAtHome. 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 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.
 */

#pragma once

#include <wtf/FastMalloc.h>
#include <wtf/RefCounted.h>

namespace WebCore {

class MallocStatistics : public RefCounted<MallocStatistics> {
public:
    static Ref<MallocStatistics> create() { return adoptRef(*new MallocStatistics); }

    size_t reservedVMBytes() const { return m_stats.reservedVMBytes; }
    size_t committedVMBytes() const { return m_stats.committedVMBytes; }
    size_t freeListBytes() const { return m_stats.freeListBytes; }

private:
    MallocStatistics()
    {
        m_stats = WTF::fastMallocStatistics();
    }

    WTF::FastMallocStatistics m_stats;
};

} // namespace WebCore