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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef __RESOURCEMONINTERFACE_H__
#define __RESOURCEMONINTERFACE_H__

class ResourceMonitorInterface
{
public:
    struct MemoryAllocation
    {
    int allocatedInAppThread;
    int numberOfAllocatedCellsInAppThread;
    int availableMemoryInAppThreadHeap;
    qint64 availableMemoryInSystem;
    qint64 totalMemoryInSystem;
    MemoryAllocation() :
        allocatedInAppThread(0),
        numberOfAllocatedCellsInAppThread(0),
        availableMemoryInAppThreadHeap(0),
        availableMemoryInSystem(0),
        totalMemoryInSystem(0)
        {}
    };

    struct CpuUsage
    {
    qreal systemUsage;
    qreal appTreadUsage;
    CpuUsage() :
        systemUsage(0.0),
        appTreadUsage(0.0)
        {}
    };

public:
    virtual ~ResourceMonitorInterface() {}

public:
    //for symbian, prepares the resource monitor for data capture, opens handle to ekern null
    //thread and sets initial values
    virtual bool Prepare(QString applicationThreadName) = 0;

    //functions for CPU load and memory - Call Prepare before calling these
    virtual CpuUsage CPULoad()=0;
    virtual MemoryAllocation MemoryLoad()=0;

    virtual void BeginMeasureMemoryLoad()=0;
    virtual MemoryAllocation EndMeasureMemoryLoad()=0;

    virtual void BeginMeasureCPULoad()=0;
    virtual CpuUsage EndMeasureCPULoad()=0;

};

Q_DECLARE_INTERFACE(ResourceMonitorInterface,
                     "com.trolltech.Plugin.ResourceMonitorInterface/1.0");

#endif //__RESOURCEMONINTERFACE_H__