1 /*

     2 * Copyright (c) 2002 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:  Implementation of the CProfileUtilitySingletonImpl.

    15 *

    16 */

    17 

    18 

    19 

    20 // INCLUDE FILES

    21 #include "CProfileUtilitySingletonImpl.h"

    22 #include "MProfilesLocalFeatures.h"

    23 #include "CProfilesLocalFeatures.h"

    24 #include "ProfilesDebug.h"

    25 

    26 // ============================ MEMBER FUNCTIONS ===============================

    27 

    28 // -----------------------------------------------------------------------------

    29 // CProfileUtilitySingletonImpl::CProfileUtilitySingletonImpl

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

    31 // might leave.

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

    33 //

    34 CProfileUtilitySingletonImpl::CProfileUtilitySingletonImpl()

    35     {

    36     }

    37 

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

    39 // CProfileUtilitySingletonImpl::ConstructL

    40 // Symbian 2nd phase constructor can leave.

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

    42 //

    43 void CProfileUtilitySingletonImpl::ConstructL()

    44     {

    45     iLocalFeatures = CProfilesLocalFeatures::NewL();

    46     }

    47 

    48 // -----------------------------------------------------------------------------

    49 // CProfileUtilitySingletonImpl::NewL

    50 //

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

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

    53 //

    54 CProfileUtilitySingletonImpl* CProfileUtilitySingletonImpl::NewL()

    55     {

    56     CProfileUtilitySingletonImpl* self

    57         = new ( ELeave ) CProfileUtilitySingletonImpl();

    58     CleanupStack::PushL( self );

    59     self->ConstructL();

    60     CleanupStack::Pop(); // self

    61     return self;

    62     }

    63 

    64 // -----------------------------------------------------------------------------

    65 // CProfileUtilitySingletonImpl::ProfilesLocalFeatures

    66 //

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

    68 // -----------------------------------------------------------------------------

    69 //

    70 MProfilesLocalFeatures& CProfileUtilitySingletonImpl::ProfilesLocalFeatures()

    71     {

    72     return *iLocalFeatures;

    73     }

    74 

    75 // -----------------------------------------------------------------------------

    76 // CProfileUtilitySingletonImpl::IncrementReferences

    77 //

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

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

    80 //

    81 void CProfileUtilitySingletonImpl::IncrementReferences()

    82     {

    83     ++iReferences;

    84     }

    85 

    86 // -----------------------------------------------------------------------------

    87 // CProfileUtilitySingletonImpl::DecrementReferences

    88 //

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

    90 // -----------------------------------------------------------------------------

    91 //

    92 TBool CProfileUtilitySingletonImpl::DecrementReferences()

    93     {

    94     return ( --iReferences <= 0 );

    95     }

    96 

    97 // -----------------------------------------------------------------------------

    98 // CProfileUtilitySingletonImpl::~CProfileUtilitySingletonImpl

    99 //

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

   101 // -----------------------------------------------------------------------------

   102 //

   103 CProfileUtilitySingletonImpl::~CProfileUtilitySingletonImpl()

   104     {

   105     delete iLocalFeatures;

   106     }

   107 

   108 // ========================== OTHER EXPORTED FUNCTIONS =========================

   109 

   110 // -----------------------------------------------------------------------------

   111 // ProfileUtilityInstanceL creates an implementation of MProfileUtilitySingleton

   112 // if needed, increments the reference count and returns a reference to the only

   113 // instance of it.

   114 // Returns a reference to the only instance of MProfileUtilitySingleton.

   115 // -----------------------------------------------------------------------------

   116 //

   117 EXPORT_C MProfileUtilitySingleton& ProfileUtilityInstanceL()

   118     {

   119     CProfileUtilitySingletonImpl* instance =

   120         static_cast<CProfileUtilitySingletonImpl*>( Dll::Tls() );

   121     if( instance == NULL )

   122         {

   123         instance = CProfileUtilitySingletonImpl::NewL();

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

   125         if( err )

   126             {

   127             delete instance;

   128             //delete static_cast<CProfileUtilitySingletonImpl*>( instance );

   129             User::Leave( err );

   130             }

   131         }

   132     instance->IncrementReferences();

   133     //return static_cast<MProfileUtilitySingleton&>( instance );

   134     return *instance;

   135     }

   136 

   137 // -----------------------------------------------------------------------------

   138 // ReleaseProfileUtility decrements the count of references to the only instance

   139 // of MProfileUtilitySingleton implementation and releases the resources if

   140 // there are no more references to it.

   141 // -----------------------------------------------------------------------------

   142 //

   143 EXPORT_C void ReleaseProfileUtility()

   144     {

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

   146     if( instance != NULL )

   147         {

   148         CProfileUtilitySingletonImpl* singleton =

   149             static_cast<CProfileUtilitySingletonImpl*>( instance );

   150         if( singleton->DecrementReferences() )

   151             {

   152             delete singleton;

   153             Dll::SetTls( NULL );

   154             }

   155         }

   156     }

   157 

   158 //  End of File

   159 

   160