/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Event based ITT sampler skeleton copypasted from MemoryEventHandler.h

*

*/

#include "IttSamplerImpl.h"

#ifndef __PI_ITT_EVENT_HANDLER__

#define __PI_ITT_EVENT_HANDLER__

#include <piprofiler/ProfilerGenericClassesKrn.h>

// CONSTANTS

const TInt KITTBufferSize = 256;

class DProfilerSampleBuffer;

/*

 * ITT event handler for listaning kernel events 

 */

class DIttEventHandler : public DKernelEventHandler

    {

public:

    // constructor

    DIttEventHandler(DProfilerSampleBuffer*  aSampleBuffer, TProfilerGppSamplerData* aGppSamplerDataIn);

    TInt Create();

    ~DIttEventHandler();

    TInt Start();

    TInt Stop();

    TBool Tracking() {return iTracking;}

    TBool SampleNeeded();

private:

    static TUint EventHandler(TKernelEvent aEvent, TAny* a1, TAny* a2, TAny* aThis);

    TUint HandleEvent(TKernelEvent aType, TAny* a1, TAny* a2);

    // handle code segments

    TBool HandleAddCodeSeg(DCodeSeg* aSeg);

    TBool HandleRemoveCodeSeg(DCodeSeg* aSeg);

private:

    /** Lock serialising calls to event handler */

        DMutex*     iLock;

        TBool       iTracking;

        DProfilerSampleBuffer*  iSampleBuffer;

        TUint32     iCount;        

        TUint8      iSample[KITTBufferSize];

        TPtr8       iSampleDescriptor;

        TProfilerGppSamplerData*     gppSamplerData;

    };

#endif  //__PI_ITT_EVENT_HANDLER__