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:  Singleton base class

    15 *

    16 */

    17 

    18 

    19 

    20 // INCLUDE FILES

    21 #include    "CCASingletonPC.h"

    22 #include    <e32std.h>

    23 

    24 

    25 // ============================ MEMBER FUNCTIONS ===============================

    26 

    27 // -----------------------------------------------------------------------------

    28 // CCASingletonPC::CCASingletonPC

    29 // C++ default constructor can NOT contain any code, that

    30 // might leave.

    31 // -----------------------------------------------------------------------------

    32 //

    33 CCASingletonPC::CCASingletonPC()

    34     {

    35     }

    36 

    37 

    38 // -----------------------------------------------------------------------------

    39 // CCASingletonPC::~CCASingletonPC

    40 // Destructor

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

    42 //

    43 CCASingletonPC::~CCASingletonPC()

    44     {

    45     Dll::SetTls( NULL );

    46     }

    47 

    48 

    49 // -----------------------------------------------------------------------------

    50 // CCASingletonPC::BaseInstanceL()

    51 // (other items were commented in a header).

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

    53 //

    54 TAny* CCASingletonPC::BaseInstanceL()

    55     {

    56     TAny* instance = Dll::Tls();

    57     if ( !instance )

    58         {

    59         instance = ConstructSingletonInstanceL();

    60         TInt err( Dll::SetTls( instance ) );

    61         if ( err == KErrNone )

    62             {

    63             return instance;

    64             }

    65         else

    66             {

    67             delete instance;

    68             User::Leave( err );

    69             return NULL;    // this line just keeps the compiler happy

    70             }

    71         }

    72     else

    73         {

    74         return instance;

    75         }

    76     }

    77 

    78 //  End of File