multimediacommsengine/mmcesrv/mmceserver/src/mcetimermanager.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 17:02:55 +0300
branchRCL_3
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parent 0 1bce908db942
permissions -rw-r--r--
Revision: 201015 Kit: 201017
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/*
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* Copyright (c) 2006 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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*
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*/
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#include "mcetimermanager.h"
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#include "mcesrvlogs.h"
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#include "mcesip.h"
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// Granularity for timer entry array iEntries
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const TInt KArrayGranularity( 8);
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// One millisecond as microseconds
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const TInt KOneMillisAsMicros( 1000);
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// -----------------------------------------------------------------------------
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// CMceTimerManager::NewL
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// -----------------------------------------------------------------------------
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//
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CMceTimerManager* CMceTimerManager::NewL()
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    {
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    CMceTimerManager* self = CMceTimerManager::NewLC();
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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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// CMceTimerManager::NewLC
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// -----------------------------------------------------------------------------
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//
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CMceTimerManager* CMceTimerManager::NewLC()
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    {
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    CMceTimerManager* self = new( ELeave ) CMceTimerManager;
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    return self;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::~CMceTimerManager
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// -----------------------------------------------------------------------------
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//
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CMceTimerManager::~CMceTimerManager()
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    {
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    if(iTimerContainer)
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    	{
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    	iTimerContainer->Cancel();
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    	delete iTimerContainer;
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    	}
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	iEntries.ResetAndDestroy();
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::StartL
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// -----------------------------------------------------------------------------
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//
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TMceTimerId CMceTimerManager::StartL(MMCEExpirationHandler* aObserver,
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        TUint aMilliseconds)
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    {
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    MCESRV_DEBUG("2 CMceTimerManager::StartL, Entry");
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    return StartL(aObserver, aMilliseconds, NULL);
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::StartL
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// -----------------------------------------------------------------------------
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//
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TMceTimerId CMceTimerManager::StartL(MMCEExpirationHandler* aObserver,
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        TUint aMilliseconds, TAny* aTimerParam)
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    {
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    MCESRV_DEBUG("CMceTimerManager::StartL, Entry");
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    // Do not accept a NULL observer
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    if ( !aObserver)
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        {
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        User::Leave(KErrArgument);
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        }
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    // Get new unique timer id
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    TMceTimerId newTimerId = NewTimerId();
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    MCESRV_DEBUG_DVALUES( "timer", newTimerId, "timeout", aMilliseconds );
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    // Define a new entry with the new id
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    TEntry *newEntry = new ( ELeave ) TEntry();
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    CleanupStack::PushL( newEntry );
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    newEntry->iId = newTimerId;
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    newEntry->iObserver = aObserver;
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    newEntry->iObserverParam = aTimerParam;
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    newEntry->iCallBack = TCallBack( TimerExpiredCallBack, newEntry );
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    newEntry->iEntry = TDeltaTimerEntry( newEntry->iCallBack );
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    newEntry->iTimerManager = this;
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    iEntries.InsertL(newEntry, 0);
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    CleanupStack::Pop( newEntry );
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    TTimeIntervalMicroSeconds interval( TInt64( aMilliseconds ) * KOneMillisAsMicros );
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    if (KErrNone != iTimerContainer->QueueLong( interval, newEntry->iEntry ) )
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        {
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        MCESRV_DEBUG("CMceTimerManager:: CDeltaTimer::QueueLong Error!!!");
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        return CMceTimerManager::KNoSuchTimer;
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        }
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    MCESRV_DEBUG("CMceTimerManager::StartL, Exit");
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    return newEntry->iId;
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   123
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::Stop
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// -----------------------------------------------------------------------------
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//
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TInt CMceTimerManager::Stop(TMceTimerId aTimerId)
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    {
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    MCESRV_DEBUG("CMceTimerManager::Stop, Entry");
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    MCESRV_DEBUG_DVALUE("timer", aTimerId );
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    // Find the timer entry to be stopped
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    TInt entryIndex = FindEntry(aTimerId);
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    if (entryIndex == KErrNotFound)
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        {
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        MCESRV_DEBUG("CMceTimerManager::Stop - Invalid TimerId, timer not found");
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        return KErrNotFound;
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        }
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    // Remove timer information from container and delete entry
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    TEntry* entry = iEntries[entryIndex];
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    iTimerContainer->Remove(entry->iEntry);
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    iEntries.Remove(entryIndex);
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    delete entry;
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    entry = NULL;
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    MCESRV_DEBUG("CMceTimerManager::Stop, Exit");
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    return KErrNone;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::IsRunning
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// -----------------------------------------------------------------------------
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//
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TBool CMceTimerManager::IsRunning(TMceTimerId aTimerId) const
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    {
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    TInt entryIndex = FindEntry(aTimerId);
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    if (entryIndex != KErrNotFound)
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        {
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        return ETrue;
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        }
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    return EFalse;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::NewTimerId
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// -----------------------------------------------------------------------------
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//
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TMceTimerId CMceTimerManager::NewTimerId()
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    {
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    // Note that a rolling unsigned 32bit integer id counter
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    // is not strictly unique - however, it is not possible
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    // to have a timer with id 1 and id 2^32-1 at the same time
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    // due to time and memory constraints.
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    iTimerIdCounter++;
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    if (iTimerIdCounter == KNoSuchTimer)
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        {
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        iTimerIdCounter++;
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        }
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    return iTimerIdCounter;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::FindEntry
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// -----------------------------------------------------------------------------
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//
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TInt CMceTimerManager::FindEntry(TMceTimerId aTimerId) const
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    {
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    // Search for an entry with a matching id
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    TInt count = iEntries.Count();
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    for (TInt i = 0; i < count; i++)
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        {
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        if (iEntries[ i ]->iId == aTimerId)
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            {
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            return i;
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            }
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        }
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    return KErrNotFound;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::CMceTimerManager
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// -----------------------------------------------------------------------------
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//
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CMceTimerManager::CMceTimerManager() :
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    iEntries(KArrayGranularity), iTimerIdCounter(KNoSuchTimer),
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            iTimerContainer(NULL)
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    {
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::ConstructL
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// -----------------------------------------------------------------------------
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//
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void CMceTimerManager::ConstructL()
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    {
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    iTimerContainer = CDeltaTimer::NewL(CActive::EPriorityStandard);
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::TimerExpiredCallBack
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// -----------------------------------------------------------------------------
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//
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TInt CMceTimerManager::TimerExpiredCallBack(TAny *aPtr)
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    {
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    MCESRV_DEBUG("TimerExpiredCallBack, Entry");
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    if (aPtr != NULL)
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        {
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        TEntry* entry = static_cast<TEntry*> (aPtr );
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        MCESRV_DEBUG_DVALUE(
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                "CMceTimerManager:timer expired - calling observer.timer", entry->iId );
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        // Call timer expired function
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        TRAP_IGNORE( entry->iObserver->TimerExpiredL( entry->iId,
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                        entry->iObserverParam ) );
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        // Remove the TEntry pointer from iEntries
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        TInt index = entry->iTimerManager->iEntries.Find(entry);
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        if (index != KErrNotFound)
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            {
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            entry->iTimerManager->iEntries.Remove(index);
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            }
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        // Delete entry
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        delete entry;
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        return KErrNone;
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        }
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    MCESRV_DEBUG("TimerExpiredCallBack, Exit");
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    return KErrArgument;
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    }
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// -----------------------------------------------------------------------------
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// CMceTimerManager::TEntry::TEntry
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// -----------------------------------------------------------------------------
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//
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CMceTimerManager::TEntry::TEntry() :
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    iId(KNoSuchTimer), iObserver( NULL), iObserverParam( NULL), iTimerManager( NULL )
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    {
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    }
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