/*

* 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:

*

*/

#ifndef MEMSPYENGINECHUNKWATCHER_H

#define MEMSPYENGINECHUNKWATCHER_H

// System includes

#include <e32base.h>

// Classes referenced

class RMemSpyDriverClient;

class MMemSpyEngineChunkWatcherObserver

	{

public: // From MMemSpyEngineChunkWatcherObserver

	virtual void HandleChunkAddL( TUint aChunkHandle ) = 0;

    virtual void HandleChunkDestroyL( TUint aChunkHandle ) = 0;

	};

NONSHARABLE_CLASS( CMemSpyEngineChunkWatcher ) : public CActive

    {

public:

	static CMemSpyEngineChunkWatcher* NewL( RMemSpyDriverClient& aDriver, TInt aPriority = CActive::EPriorityStandard );

	~CMemSpyEngineChunkWatcher();

private:

	CMemSpyEngineChunkWatcher( RMemSpyDriverClient& aDriver, TInt aPriority );

	void ConstructL();

public: // API

    void AddObserverL( MMemSpyEngineChunkWatcherObserver& aObserver );

    void RemoveObserver( MMemSpyEngineChunkWatcherObserver& aObserver );

private: // From CActive

	void RunL();

	void DoCancel();

private: // Internal methods

    void Request();

    void NotifyChunkAddL( TUint aChunkHandle );

    void NotifyChunkDestroyL( TUint aChunkHandle );

private: // Data members

    TUint iId;

    TUint iEventMonitorHandle;

    RMemSpyDriverClient& iDriver;

	RPointerArray< MMemSpyEngineChunkWatcherObserver > iObservers;

    };

#endif