memspy/Engine/Source/SysMemTracker/MemSpyEngineHelperSysMemTrackerImp.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 06 Jul 2010 16:05:13 +0300
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parent 0 a03f92240627
permissions -rw-r--r--
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/*
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* Copyright (c) 2009 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 "MemSpyEngineHelperSysMemTrackerImp.h"
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// System includes
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#include <e32debug.h>
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// User includes
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#include <memspy/engine/memspyengine.h>
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#include <memspy/engine/memspyengineutils.h>
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#include <memspy/engine/memspyengineobjectthread.h>
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#include <memspy/engine/memspyengineobjectprocess.h>
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#include <memspy/engine/memspyengineobjectcontainer.h>
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#include <memspy/engine/memspyenginehelperheap.h>
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#include <memspy/engine/memspyenginehelperchunk.h>
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#include <memspy/engine/memspyenginehelpersysmemtrackercycle.h>
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#include <memspy/engine/memspyenginehelpersysmemtrackerobserver.h>
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#include "MemSpyEngineHelperSysMemTrackerEntryManager.h"
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// Constants
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const TInt KMemSpyDefaultTrackerTimerPeriod = 30; // Seconds
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CMemSpyEngineHelperSysMemTrackerImp::CMemSpyEngineHelperSysMemTrackerImp( CMemSpyEngine& aEngine )
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:   CTimer( EPriorityStandard ), iEngine( aEngine )
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    {
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    CActiveScheduler::Add( this );
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    iConfig.iTimerPeriod = TTimeIntervalMicroSeconds32( KMemSpyDefaultTrackerTimerPeriod * 1000000 );
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    }
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CMemSpyEngineHelperSysMemTrackerImp::~CMemSpyEngineHelperSysMemTrackerImp()
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    {
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    Cancel();
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    //
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    delete iEntryManager;
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    //
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    iCompletedCycles.ResetAndDestroy();
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    iCompletedCycles.Close();
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::ConstructL()
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    {
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    CTimer::ConstructL();
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    }
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CMemSpyEngineHelperSysMemTrackerImp* CMemSpyEngineHelperSysMemTrackerImp::NewL( CMemSpyEngine& aEngine )
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    {
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    CMemSpyEngineHelperSysMemTrackerImp* self = new(ELeave) CMemSpyEngineHelperSysMemTrackerImp( aEngine );
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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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void CMemSpyEngineHelperSysMemTrackerImp::StartL( const TMemSpyEngineHelperSysMemTrackerConfig& aConfig )
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    {
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    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::StartL() - START - timer period: %d", Config().TimerPeriod().Int() ) );
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    // Zap any old data
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    Reset();
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    // Cache client settings
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    iConfig = aConfig;
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    // Make new cycle
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    PrepareInitialCycleL();
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    // Start tracking via timer - future updates will by driven by RunL().
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    After( Config().TimerPeriod() );
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    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::END() - START - timer period: %d", Config().TimerPeriod().Int() ) );
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::StopL()
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    {
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    Cancel();
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::SetObserver( MMemSpyEngineHelperSysMemTrackerObserver* aObserver )
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    {
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    iObserver = aObserver;
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::RemoveObserver( MMemSpyEngineHelperSysMemTrackerObserver* aObserver )
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    {
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    if  ( iObserver == aObserver )
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        {
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        iObserver = NULL;
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        }
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    }
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const RPointerArray< CMemSpyEngineHelperSysMemTrackerCycle >& CMemSpyEngineHelperSysMemTrackerImp::CompletedCycles() const
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    {
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    return iCompletedCycles;
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::Reset()
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    {
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    Cancel();
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    iCompletedCycles.ResetAndDestroy();
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    //
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    if  ( iObserver )
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        {
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        TRAP_IGNORE( iObserver->HandleCyclesResetL() );
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        }
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL()
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    {
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    const TInt count = iCompletedCycles.Count();
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    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL() - START - isActive: %d, cycleCount: %d", IsActive(), count ) );
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    if  ( IsActive() )
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        {
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        Cancel();
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        CheckForChangesL();
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        After( Config().TimerPeriod() );
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        }
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    else
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        {
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        // Timer not running, so we're probably being poked by some external-to-memspy client that
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        // wants to force an update.
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        //
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        // If we've never yet performed an initital cycle, then prep that. Otherwise, just proceed as normal
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        // as if we had been called back via RunL().
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        if  ( count == 0 )
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            {
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            PrepareInitialCycleL();
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            }
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        else
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            {
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            CheckForChangesL();
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            }
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        }
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    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL() - END - isActive: %d, cycleCount: %d", IsActive(), iCompletedCycles.Count() ) );
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    }
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TInt CMemSpyEngineHelperSysMemTrackerImp::MdcaCount() const
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    {
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    return iCompletedCycles.Count();
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    }
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TPtrC CMemSpyEngineHelperSysMemTrackerImp::MdcaPoint( TInt aIndex ) const
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    {
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    const CMemSpyEngineHelperSysMemTrackerCycle* cycleInfo = iCompletedCycles[ aIndex ];
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    const TPtrC ret( cycleInfo->Caption() );
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    return ret;
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::NotifyObserverCycleStartedL( CMemSpyEngineHelperSysMemTrackerCycle& aCycle )
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    {
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    if  ( iObserver )
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        {
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        TRAP_IGNORE( iObserver->HandleCycleStartedL( aCycle ) );
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        }
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::NotifyObserverCycleFinishedL( CMemSpyEngineHelperSysMemTrackerCycle& aCycle )
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    {
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    if  ( iObserver )
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        {
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        TRAP_IGNORE( iObserver->HandleCycleFinishedL( aCycle ) );
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        aCycle.DiscardChanges();
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        }
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::AddCycleAndPopL( CMemSpyEngineHelperSysMemTrackerCycle* aCycle )
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    {
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    iCompletedCycles.AppendL( aCycle );
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    CleanupStack::Pop( aCycle );
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    aCycle->FinalizeL();
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    }
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CMemSpyEngineHelperSysMemTrackerCycle* CMemSpyEngineHelperSysMemTrackerImp::LastCycleOrNull()
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    {
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    CMemSpyEngineHelperSysMemTrackerCycle* ret = NULL;
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    //
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    const TInt count = iCompletedCycles.Count();
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    if  ( count )
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        {
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        ret = iCompletedCycles[ count - 1 ];
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        }
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    //
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    return ret;
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::PrepareInitialCycleL()
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    {
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    // Create seed items
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    CMemSpyEngineHelperSysMemTrackerEntryManager* entryManager = CMemSpyEngineHelperSysMemTrackerEntryManager::NewL( *this );
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    delete iEntryManager;
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    iEntryManager = entryManager;
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    // Everything changes on the first cycle.
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    CMemSpyEngineHelperSysMemTrackerCycle* baselineCycle = CMemSpyEngineHelperSysMemTrackerCycle::NewLC( iConfig );
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    NotifyObserverCycleStartedL( *baselineCycle );
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    iEntryManager->EverythingHasChangedL( *baselineCycle );
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    AddCycleAndPopL( baselineCycle );
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    NotifyObserverCycleFinishedL( *baselineCycle );
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesL()
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    {
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    // Create info structure 
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    CMemSpyEngineHelperSysMemTrackerCycle* cycle = CMemSpyEngineHelperSysMemTrackerCycle::NewLC( iConfig, LastCycleOrNull() );
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    // Notify 
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    NotifyObserverCycleStartedL( *cycle );
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    // Find changes
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    iEntryManager->IdentifyChangesL( *cycle );
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    // Finalise the cycle and save it
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    AddCycleAndPopL( cycle );
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    // Notify
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    NotifyObserverCycleFinishedL( *cycle );
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    }
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void CMemSpyEngineHelperSysMemTrackerImp::RunL()
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    {
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    CheckForChangesL();
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    After( Config().TimerPeriod() );
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    }
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TInt CMemSpyEngineHelperSysMemTrackerImp::RunError( TInt aError )
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    {
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    RDebug::Printf( "CMemSpyEngineHelperSysMemTrackerImp::RunError() - aError: %d", aError );
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    (void) aError;
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    //
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    Cancel();
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    After( Config().TimerPeriod() );
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    //
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    return KErrNone;
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    }
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