localconnectivityservice/dun/utils/src/DunSignalWaiter.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 11 Jun 2010 14:27:06 +0300
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/*
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* Copyright (c) 2006-2007 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:  Monitors for new data in RComm local media side
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*
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*/
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#ifdef PRJ_USE_NETWORK_STUBS
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#include <c32comm_stub.h>
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#else
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#include <d32comm.h>
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#endif
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#include "DunTransporter.h"
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#include "DunSignalWaiter.h"
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#include "DunSignalCopy.h"
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#include "DunDebug.h"
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// Two-phased constructor.
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// ---------------------------------------------------------------------------
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//
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CDunSignalWaiter* CDunSignalWaiter::NewL( MDunChannelAllocator* aChannelCallback )
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    {
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    CDunSignalWaiter* self = new (ELeave) CDunSignalWaiter( aChannelCallback );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    CleanupStack::Pop( self );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// Destructor.
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// ---------------------------------------------------------------------------
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//
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CDunSignalWaiter::~CDunSignalWaiter()
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    {
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    FTRACE(FPrint( _L("CDunSignalWaiter::~CDunSignalWaiter()") ));
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    ResetData();
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    FTRACE(FPrint( _L("CDunSignalWaiter::~CDunSignalWaiter() complete") ));
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    }
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// ---------------------------------------------------------------------------
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// Resets data to initial values
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// ---------------------------------------------------------------------------
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//
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void CDunSignalWaiter::ResetData()
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    {
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    FTRACE(FPrint( _L("CDunSignalWaiter::ResetData()") ));
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    // APIs affecting this:
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    // IssueRequest()
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    Stop();
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    // AddConnMonCallbackL()
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    iCallbacks.Close();
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    // Internal
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    Initialize();
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    FTRACE(FPrint( _L("CDunSignalWaiter::ResetData() complete") ));
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    }
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// ---------------------------------------------------------------------------
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// Adds callback for RunL error controlling
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// The callback will be called when error is detected in asynchronous
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// operation
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// ---------------------------------------------------------------------------
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//
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TInt CDunSignalWaiter::AddCallback( MDunConnMon* aCallback )
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    {
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    FTRACE(FPrint( _L("CDunSignalWaiter::AddCallback()" ) ));
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    if ( !aCallback )
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        {
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        FTRACE(FPrint( _L("CDunSignalWaiter::AddCallback() (ERROR) complete" ) ));
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        return KErrGeneral;
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        }
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    TInt retTemp = iCallbacks.Find( aCallback );
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    if ( retTemp != KErrNotFound )
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        {
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        FTRACE(FPrint( _L("CDunSignalWaiter::AddCallback() (already exists) complete" ) ));
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        return KErrAlreadyExists;
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        }
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    retTemp = iCallbacks.Append( aCallback );
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    if ( retTemp != KErrNone )
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        {
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        FTRACE(FPrint( _L("CDunSignalWaiter::AddCallback() (append failed!) complete" ) ));
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        return retTemp;
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        }
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    FTRACE(FPrint( _L("CDunSignalWaiter::AddCallback() complete" ) ));
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    return KErrNone;
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    }
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// ---------------------------------------------------------------------------
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// Sets media to use for this endpoint
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// ---------------------------------------------------------------------------
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//
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TInt CDunSignalWaiter::SetMedia( RComm* aComm )
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    {
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    FTRACE(FPrint( _L("CDunSignalWaiter::SetMedia(RComm) (addr=0x%08X)" ), aComm));
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    if ( !aComm )
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        {
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        FTRACE(FPrint( _L("CDunSignalWaiter::SetMedia() (aComm) not initialized!" )));
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        return KErrGeneral;
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   113
        }
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parents:
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   114
    TCommCaps2 caps;
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parents:
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   115
    aComm->Caps( caps );
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parents:
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   116
    if ( !(caps().iNotificationCaps & KNotifySignalsChangeSupported) )
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parents:
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   117
        {
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parents:
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   118
        FTRACE(FPrint( _L("CDunSignalWaiter::SetMedia() (RComm) (not supported) complete" )));
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parents:
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   119
        return KErrNotSupported;
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parents:
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   120
        }
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   121
    iComm = aComm;
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parents:
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   122
    FTRACE(FPrint( _L("CDunSignalWaiter::SetMedia() (RComm) complete" )));
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parents:
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   123
    return KErrNone;
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   124
    }
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parents:
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   125
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   126
// ---------------------------------------------------------------------------
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   127
// Issues request to start waiting for new data in RComm
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   128
// ---------------------------------------------------------------------------
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   129
//
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   130
TInt CDunSignalWaiter::IssueRequest()
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   131
    {
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   132
    FTRACE(FPrint( _L("CDunSignalWaiter::IssueRequest()" )));
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   133
    if ( iSignalWaiterState != EDunStateIdle )
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parents:
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   134
        {
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   135
        FTRACE(FPrint( _L("CDunSignalWaiter::IssueRequest() (not ready) complete" )));
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   136
        return KErrNotReady;
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   137
        }
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   138
    if ( !iComm )
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parents:
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   139
        {
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   140
        FTRACE(FPrint( _L("CDunSignalWaiter::IssueRequest() (iComm) not initialized!" ) ));
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   141
        return KErrGeneral;
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parents:
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   142
        }
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   143
    iStatus = KRequestPending;
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   144
    iComm->NotifySignalChange( iStatus, iSignals, KSignalDCEInputs );
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   145
    SetActive();
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   146
    iSignalWaiterState = EDunStateSignalWaiting;
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parents:
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   147
    FTRACE(FPrint( _L("CDunSignalWaiter::IssueRequest() complete" )));
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parents:
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   148
    return KErrNone;
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parents:
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   149
    }
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parents:
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   150
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   151
// ---------------------------------------------------------------------------
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   152
// Stops monitoring for new data
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   153
// ---------------------------------------------------------------------------
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   154
//
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   155
TInt CDunSignalWaiter::Stop()
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parents:
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   156
    {
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parents:
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   157
    FTRACE(FPrint( _L("CDunSignalWaiter::Stop()" )));
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parents:
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   158
    if ( iSignalWaiterState != EDunStateSignalWaiting )
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parents:
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   159
        {
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parents:
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   160
        FTRACE(FPrint( _L("CDunSignalWaiter::Stop() (not ready) complete" )));
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parents:
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   161
        return KErrNotReady;
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parents:
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   162
        }
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parents:
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   163
    if ( !iComm )
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parents:
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   164
        {
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parents:
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   165
        FTRACE(FPrint( _L("CDunSignalWaiter::Stop() (iComm) not initialized!" )));
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parents:
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   166
        return KErrGeneral;
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parents:
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   167
        }
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parents:
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   168
    iComm->NotifySignalChangeCancel();
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parents:
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   169
    Cancel();
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   170
    iSignalWaiterState = EDunStateIdle;
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parents:
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   171
    FTRACE(FPrint( _L("CDunSignalWaiter::Stop() complete" )));
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parents:
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   172
    return KErrNone;
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parents:
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   173
    }
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parents:
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   174
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   175
// ---------------------------------------------------------------------------
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parents:
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   176
// CDunSignalWaiter::CDunSignalWaiter
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   177
// ---------------------------------------------------------------------------
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   178
//
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   179
CDunSignalWaiter::CDunSignalWaiter( MDunChannelAllocator* aChannelCallback ) :
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   180
    CActive( EPriorityHigh ),
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parents:
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   181
    iChannelCallback( aChannelCallback )
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parents:
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   182
    {
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   183
    Initialize();
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parents:
diff changeset
   184
    }
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parents:
diff changeset
   185
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parents:
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   186
// ---------------------------------------------------------------------------
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parents:
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   187
// CDunSignalWaiter::ConstructL
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parents:
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   188
// ---------------------------------------------------------------------------
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parents:
diff changeset
   189
//
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parents:
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   190
void CDunSignalWaiter::ConstructL()
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parents:
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   191
    {
85e0c0339cc3 Revision: 201021
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parents:
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   192
    FTRACE(FPrint( _L("CDunSignalWaiter::ConstructL()" ) ));
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parents:
diff changeset
   193
    if ( !iChannelCallback )
85e0c0339cc3 Revision: 201021
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parents:
diff changeset
   194
        {
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parents:
diff changeset
   195
        User::Leave( KErrGeneral );
85e0c0339cc3 Revision: 201021
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parents:
diff changeset
   196
        }
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parents:
diff changeset
   197
    CActiveScheduler::Add( this );
85e0c0339cc3 Revision: 201021
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   198
    FTRACE(FPrint( _L("CDunSignalWaiter::ConstructL() complete" ) ));
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parents:
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   199
    }
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parents:
diff changeset
   200
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parents:
diff changeset
   201
// ---------------------------------------------------------------------------
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parents:
diff changeset
   202
// Initializes this class
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parents:
diff changeset
   203
// ---------------------------------------------------------------------------
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parents:
diff changeset
   204
//
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parents:
diff changeset
   205
void CDunSignalWaiter::Initialize()
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parents:
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   206
    {
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parents:
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   207
    FTRACE(FPrint( _L("CDunSignalWaiter::Initialize()" ) ));
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parents:
diff changeset
   208
    // Don't initialize iChannelCallback here (it is set through NewL)
85e0c0339cc3 Revision: 201021
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parents:
diff changeset
   209
    iSignalWaiterState = EDunStateIdle;
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parents:
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   210
    iSignals = 0;
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parents:
diff changeset
   211
    iComm = NULL;
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parents:
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   212
    FTRACE(FPrint( _L("CDunSignalWaiter::Initialize() complete" ) ));
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parents:
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   213
    }
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parents:
diff changeset
   214
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parents:
diff changeset
   215
// ---------------------------------------------------------------------------
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parents:
diff changeset
   216
// From class CActive.
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parents:
diff changeset
   217
// Gets called when signals changed in RComm object
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parents:
diff changeset
   218
// ---------------------------------------------------------------------------
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parents:
diff changeset
   219
//
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parents:
diff changeset
   220
void CDunSignalWaiter::RunL()
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parents:
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   221
    {
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parents:
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   222
    FTRACE(FPrint( _L("CDunSignalWaiter::RunL()" ) ));
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parents:
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   223
    iSignalWaiterState = EDunStateIdle;
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parents:
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   224
    TInt retTemp = iStatus.Int();
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parents:
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   225
    if ( retTemp != KErrNone )
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        {
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        FTRACE(FPrint( _L("CDunSignalWaiter::RunL() (failed) complete (%d)"), retTemp));
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        TInt count = iCallbacks.Count();
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        TDunConnectionReason connReason;
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        connReason.iReasonType = EDunReasonTypeRunL;
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        connReason.iContext = EDunMediaContextLocal;
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        connReason.iSignalType = 0;
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        connReason.iSignalHigh = EFalse;
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        connReason.iDirection = EDunDirectionUndefined;
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        connReason.iErrorCode = retTemp;
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        for ( TInt i=0; i<count; i++ )
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            {
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            TRAP_IGNORE(
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                iCallbacks[i]->NotifyProgressChangeL( iComm, connReason ) );
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            }
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        return;
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        }
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    if ( iChannelCallback )
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        {
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        iChannelCallback->NotifyNewChannelRequest( iComm );
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        }
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    FTRACE(FPrint( _L("CDunSignalWaiter::RunL() complete" ) ));
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    }
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// ---------------------------------------------------------------------------
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// From class CActive.
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// Gets called on cancel
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// ---------------------------------------------------------------------------
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//
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void CDunSignalWaiter::DoCancel()
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    {
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    }