commonservices/commonengine/diskspacereserver/src/shareddataclient.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:29:05 +0300
branchRCL_3
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Revision: 201033 Kit: 201035
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/*
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* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*     This module offers an interface for applications to access other
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*     applications' settings which are meant to have shared access.
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*
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*
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*/
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// INCLUDE FILES
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#include "shareddataclient.h"
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#include "dosclishareddata.h"
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#include <s32file.h>
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#include "tracemacros.h"
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// CONSTANTS
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// CLASS DECLARATION
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class CDosWrapper : public CBase
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    {
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    public:
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        CDosWrapper() {};
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        ~CDosWrapper() {};
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    public: // data
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        RDosServer iDosSession;
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        RDosSharedData iDosSubsession;
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};
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// ================= MEMBER FUNCTIONS ==========================================
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EXPORT_C RSharedDataClient::RSharedDataClient()
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    {
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    iDosWrapper = NULL;
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::Connect()
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// Connects to the  server - default number of message slots = 2
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// -----------------------------------------------------------------------------
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EXPORT_C TInt RSharedDataClient::Connect()
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    {
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect()"));
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    TInt err(KErrNone);
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    if( !iDosWrapper )
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        {
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        iDosWrapper = new CDosWrapper();
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        if ( !iDosWrapper )
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            {
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            COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect() - Could not create iDosWrapper, return KErrCouldNotConnect"));
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            return KErrCouldNotConnect;
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            }
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        COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect() - iDosWrapper created"));
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        }
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    err = iDosWrapper->iDosSession.Connect();
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    COMMONENGINE_RDEBUG_INT(_L("RSharedDataClient::Connect() - iDosSession.Connect() returned %d"), err);
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    if ( err != KErrNone )
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        {
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        COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect() - Could not connect iDosSession, return KErrCouldNotConnect"));
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        return KErrCouldNotConnect;
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        }
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    err = iDosWrapper->iDosSubsession.Open(iDosWrapper->iDosSession);
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    COMMONENGINE_RDEBUG_INT(_L("RSharedDataClient::Connect() - iDosSubSession.Open() returned %d"), err);
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    if ( err != KErrNone )
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        {
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        COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect() - Could not open iDosSubSession, return KErrCouldNotConnect"));
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        return KErrCouldNotConnect;
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        }
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::Connect() - return"));
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    return err;
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::Close()
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// Closes a client session.
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// -----------------------------------------------------------------------------
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EXPORT_C void RSharedDataClient::Close()
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    {
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::Close()"));
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    if ( iDosWrapper )
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        {
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        iDosWrapper->iDosSubsession.Close();
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        iDosWrapper->iDosSession.Close();
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        delete iDosWrapper;
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        iDosWrapper = NULL;
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        }
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::Close() - return"));
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::RequestFreeDiskSpaceLC()
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// -----------------------------------------------------------------------------
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EXPORT_C void RSharedDataClient::RequestFreeDiskSpaceLC( const TInt aAmount ) 
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    const
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    {
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    COMMONENGINE_RDEBUG_INT(_L("RSharedDataClient::RequestFreeDiskSpaceLC( %d )"), aAmount);
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    CleanupStack::PushL( 
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        TCleanupItem( CleanupFreeDiskSpaceRequest, 
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                      CONST_CAST( RSharedDataClient*, this ) ) );
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    COMMONENGINE_RDEBUG_INT(_L("RSharedDataClient::RequestFreeDiskSpaceLC - calling RequestFreeDiskSpace( %d )"), 
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                                aAmount);
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    RequestFreeDiskSpace( aAmount );
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::RequestFreeDiskSpaceLC() - return"));
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::RequestFreeDiskSpace()
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// -----------------------------------------------------------------------------
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EXPORT_C void RSharedDataClient::RequestFreeDiskSpace( const TInt aAmount ) 
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    const
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    {
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    COMMONENGINE_RDEBUG_INT(_L("RSharedDataClient::RequestFreeDiskSpace( %d )"), aAmount);
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    TInt amount(aAmount);
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    if ( iDosWrapper )
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        {
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        iDosWrapper->iDosSubsession.RequestFreeDiskSpace( amount ); //Use the subsession.
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        COMMONENGINE_RDEBUG(_L("RSharedDataClient::RequestFreeDiskSpace() - return"));
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        }
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    else
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        {
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        COMMON_RDEBUG(_L("RSharedDataClient::RequestFreeDiskSpace() - Not connected to the  server, return!"));
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        }
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::CancelFreeDiskSpaceRequest()
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// -----------------------------------------------------------------------------
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EXPORT_C void RSharedDataClient::CancelFreeDiskSpaceRequest() const
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    {
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::CancelFreeDiskSpaceRequest()"));
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    if ( iDosWrapper )
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        {
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        iDosWrapper->iDosSubsession.RequestFreeDiskSpaceCancel(); //Use the subsession.    
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        COMMONENGINE_RDEBUG(_L("RSharedDataClient::CancelFreeDiskSpaceRequest() - return"));
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        }
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    else
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        {
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        COMMON_RDEBUG(_L("RSharedDataClient::RequestFreeDiskSpace() - Not connected to the  server, return!"));
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        }
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    }
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// -----------------------------------------------------------------------------
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// RSharedDataClient::CleanupFreeDiskSpaceRequest()
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// -----------------------------------------------------------------------------
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void RSharedDataClient::CleanupFreeDiskSpaceRequest( TAny* aAny )
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    {
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::CleanupFreeDiskSpaceRequest()"));
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    REINTERPRET_CAST( RSharedDataClient*, aAny )->CancelFreeDiskSpaceRequest();
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    COMMONENGINE_RDEBUG(_L("RSharedDataClient::CleanupFreeDiskSpaceRequest() - return"));
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    }
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// End of File