/*

* Copyright (c) 2010 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:   AlfSynchronizer waits for synchronization to complete

*

*/

#ifndef __ALFSYNCHRONIZER_H__

#define __ALFSYNCHRONIZER_H__

#include <e32base.h>

#include <e32property.h>

/**

 * Synchronization active object.

 */

NONSHARABLE_CLASS( CAlfSynchronizer ) : public CActive

    {

public:

    /**

     * Two phase constructor.

     */

    static CAlfSynchronizer* NewL();

    /**

     * C++ destructor

     */

    ~CAlfSynchronizer();

public:

    /**

     * Starts to wait for synchronization to complete

     * with particular identifier.

     * This will start nested active scheduler.

     */

    void Start(TInt aId);  

private:    

    /**

     * C++ constructor

     */

    CAlfSynchronizer();

    /**

     * ConstructL

     */

    void ConstructL();

    void RunL();

    void DoCancel();

    static TInt CallbackSyncTimeout( TAny* aPtr );

    void DoCallbackSyncTimeout();

private: // data

    /**

     * Active scheduler waiter.

     * Own.

     */

    CActiveSchedulerWait* iWait;

    /**

     * P&S property for monitoring a variable.

     * Own.

     */

    RProperty iProperty;

    /**

     * Timer to ensure that this synchronizer has finite duration.

     * Own.

     */

    CPeriodic* iTimeout;

    /**

     * Id waiting to be completed.

     */

    TInt iSynchId;

    /**

     * ETrue if @c iWait has been stop.

     * EFalse otherwise.

     */

    TBool iAsyncStopDone;

    };

#endif //__ALFSYNCHRONIZER_H__