mtpfws/mtpfw/dataproviders/proxydp/src/rmtpproxydpsingletons.cpp
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     1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 
       
    17 
       
    18 #include "rmtpproxydpsingletons.h"
       
    19 #include "cmtpproxydpconfigmgr.h"
       
    20 
       
    21 	
       
    22 /**
       
    23 Constructor.
       
    24 */
       
    25 RMTPProxyDpSingletons::RMTPProxyDpSingletons() :
       
    26     iSingletons(NULL)
       
    27     {
       
    28     }
       
    29 
       
    30 /**
       
    31 Opens the singletons reference.
       
    32 */
       
    33 void RMTPProxyDpSingletons::OpenL(MMTPDataProviderFramework& aFramework)
       
    34     {
       
    35     iSingletons = &CSingletons::OpenL(aFramework);
       
    36     }
       
    37     
       
    38 /**
       
    39 Closes the singletons reference.
       
    40 */
       
    41 void RMTPProxyDpSingletons::Close()
       
    42     {
       
    43     if (iSingletons)
       
    44         {
       
    45         iSingletons->Close();
       
    46         iSingletons = NULL;
       
    47         }
       
    48     }
       
    49 
       
    50 /**
       
    51 Provides a handle to the MTP proxy data provider's configuration manager.
       
    52 @return The proxy data provider configuration manager.
       
    53 */
       
    54 CMTPProxyDpConfigMgr& RMTPProxyDpSingletons::FrameworkConfig()
       
    55     {
       
    56     __ASSERT_DEBUG(iSingletons, User::Invariant());
       
    57     __ASSERT_DEBUG(iSingletons->iConfigMgr, User::Invariant());
       
    58     return *iSingletons->iConfigMgr;
       
    59     }
       
    60 
       
    61 RMTPProxyDpSingletons::CSingletons* RMTPProxyDpSingletons::CSingletons::NewL(MMTPDataProviderFramework& aFramework)
       
    62     {
       
    63     CSingletons* self(new(ELeave) CSingletons());
       
    64     CleanupStack::PushL(self);
       
    65     self->ConstructL(aFramework);
       
    66     CleanupStack::Pop(self);
       
    67     return self;
       
    68     }
       
    69 
       
    70 RMTPProxyDpSingletons::CSingletons& RMTPProxyDpSingletons::CSingletons::OpenL(MMTPDataProviderFramework& aFramework)
       
    71     {
       
    72     CSingletons* self(reinterpret_cast<CSingletons*>(Dll::Tls()));
       
    73     if (!self)
       
    74         {
       
    75         self = CSingletons::NewL(aFramework);
       
    76         Dll::SetTls(reinterpret_cast<TAny*>(self));
       
    77         }
       
    78     else
       
    79         {        
       
    80         self->Inc();
       
    81         }
       
    82     return *self;
       
    83     }
       
    84     
       
    85 void RMTPProxyDpSingletons::CSingletons::Close()
       
    86     {
       
    87     CSingletons* self(reinterpret_cast<CSingletons*>(Dll::Tls()));
       
    88     if (self)
       
    89         {
       
    90         self->Dec();
       
    91         if (self->AccessCount() == 0)
       
    92             {
       
    93             delete self;
       
    94             Dll::SetTls(NULL);
       
    95             }
       
    96         }
       
    97     }
       
    98     
       
    99 RMTPProxyDpSingletons::CSingletons::~CSingletons()
       
   100     {
       
   101     delete iConfigMgr;
       
   102     }
       
   103     
       
   104 void RMTPProxyDpSingletons::CSingletons::ConstructL(MMTPDataProviderFramework& aFramework)
       
   105     {
       
   106     iConfigMgr = CMTPProxyDpConfigMgr::NewL(aFramework);
       
   107     }