1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   AlfSynchronizer waits for synchronization to complete

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef __ALFSYNCHRONIZER_H__

    21 #define __ALFSYNCHRONIZER_H__

    22 

    23 #include <e32base.h>

    24 #include <e32property.h>

    25 

    26 /**

    27  * Synchronization active object.

    28  */

    29 NONSHARABLE_CLASS( CAlfSynchronizer ) : public CActive

    30     {

    31 public:

    32     

    33     /**

    34      * Two phase constructor.

    35      */

    36     static CAlfSynchronizer* NewL();

    37     

    38     /**

    39      * C++ destructor

    40      */

    41     ~CAlfSynchronizer();

    42 

    43 public:

    44     

    45     /**

    46      * Starts to wait for synchronization to complete

    47      * with particular identifier.

    48      * This will start nested active scheduler.

    49      */

    50     void Start(TInt aId);  

    51     

    52 private:    

    53 

    54     /**

    55      * C++ constructor

    56      */

    57     CAlfSynchronizer();

    58 

    59     /**

    60      * ConstructL

    61      */

    62     void ConstructL();

    63 

    64     void RunL();

    65     void DoCancel();

    66 

    67     static TInt CallbackSyncTimeout( TAny* aPtr );

    68     void DoCallbackSyncTimeout();

    69 

    70 private: // data

    71 

    72     /**

    73      * Active scheduler waiter.

    74      * Own.

    75      */

    76     CActiveSchedulerWait* iWait;

    77     

    78     /**

    79      * P&S property for monitoring a variable.

    80      * Own.

    81      */

    82     RProperty iProperty;

    83     

    84     /**

    85      * Timer to ensure that this synchronizer has finite duration.

    86      * Own.

    87      */

    88     CPeriodic* iTimeout;

    89     

    90     /**

    91      * Id waiting to be completed.

    92      */

    93     TInt iSynchId;

    94     

    95     /**

    96      * ETrue if @c iWait has been stop.

    97      * EFalse otherwise.

    98      */

    99     TBool iAsyncStopDone;

   100     };

   101 

   102 #endif //__ALFSYNCHRONIZER_H__