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    <e32std.h>

    22 #include    "CCASingletonCmd.h"

    23 

    24 

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

    26 

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

    28 // CCASingletonCmd::CCASingletonCmd

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

    30 // might leave.

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

    32 //

    33 CCASingletonCmd::CCASingletonCmd()

    34     {

    35 

    36     }

    37 

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

    39 // CCASingletonCmd::~CCASingletonCmd

    40 // Destructor

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

    42 //

    43 CCASingletonCmd::~CCASingletonCmd()

    44     {

    45     Dll::SetTls( NULL );

    46     }

    47 

    48 

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

    50 // CCASingletonCmd::BaseInstanceL()

    51 // -----------------------------------------------------------------------------

    52 //

    53 TAny* CCASingletonCmd::BaseInstanceL()

    54     {

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

    56     if ( !instance )

    57         {

    58         instance = ConstructSingletonInstanceL();

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

    60         if ( err == KErrNone )

    61             {

    62             return instance;

    63             }

    64         else

    65             {

    66             delete instance;

    67             User::Leave( err );

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

    69             }

    70         }

    71     else

    72         {

    73         return instance;

    74         }

    75     }

    76 

    77 //  End of File