1 /*

     2 * Copyright (c) 2006 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:  Converts asynchronous call to synchronous.

    15 *

    16 */

    17 

    18 

    19 #include "cphcntasynctosync.h"

    20 

    21 // ======== MEMBER FUNCTIONS ========

    22 

    23 // ---------------------------------------------------------------------------

    24 // Constructor

    25 // ---------------------------------------------------------------------------

    26 //

    27 CPhCntAsyncToSync::CPhCntAsyncToSync()

    28     {

    29     }

    30 

    31 

    32 // ---------------------------------------------------------------------------

    33 // Second phase constructor.

    34 // ---------------------------------------------------------------------------

    35 //

    36 void CPhCntAsyncToSync::BaseConstructL()

    37     {

    38     iWait = new( ELeave )CActiveSchedulerWait();

    39     }

    40 

    41 // ---------------------------------------------------------------------------

    42 // Destructor

    43 // ---------------------------------------------------------------------------

    44 //

    45 CPhCntAsyncToSync::~CPhCntAsyncToSync()

    46     {

    47     delete iWait;

    48     }

    49 

    50 // ---------------------------------------------------------------------------

    51 // Converts asyncrhonous call to synchronous.

    52 // ---------------------------------------------------------------------------

    53 //

    54 TInt CPhCntAsyncToSync::MakeAsyncRequest()

    55     {

    56     iResponseReceived = EFalse;

    57 	// Return KErrInUse, if iWait is active.

    58 	TInt err( IsActive() ? KErrInUse : KErrNone );

    59 	if ( !err )

    60 		{

    61 		TRAP( err, DoMakeAsyncRequestL() );

    62     	}

    63 	if( !err )

    64         {

    65         // Check that response is not already received, we cannot 

    66         // start the scheduler if response is received, otherwise

    67         // scheduler waits forever.

    68         if( !iResponseReceived )

    69             {

    70             iWait->Start();

    71             }    

    72         err = iResponseError;

    73         }

    74     return err;

    75     }

    76     

    77 // ---------------------------------------------------------------------------

    78 // Indication that response has been received from async request.

    79 // ---------------------------------------------------------------------------

    80 //

    81 void CPhCntAsyncToSync::ResponseReceived( TInt aErrorCode )

    82     {

    83     iResponseReceived = ETrue;

    84     iResponseError = aErrorCode;

    85     if( iWait->IsStarted() )

    86         {

    87         iWait->AsyncStop();

    88         }

    89     }

    90 

    91 // ---------------------------------------------------------------------------

    92 // Checks if there are pending asynchronous requests available.

    93 // ---------------------------------------------------------------------------

    94 //

    95 TBool CPhCntAsyncToSync::IsActive()

    96     {

    97     return iWait->IsStarted();

    98     }

    99