--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memspy/Engine/Source/SysMemTracker/MemSpyEngineHelperSysMemTrackerImp.cpp	Tue Feb 02 01:57:15 2010 +0200
@@ -0,0 +1,287 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include "MemSpyEngineHelperSysMemTrackerImp.h"
+
+// System includes
+#include <e32debug.h>
+
+// User includes
+#include <memspy/engine/memspyengine.h>
+#include <memspy/engine/memspyengineutils.h>
+#include <memspy/engine/memspyengineobjectthread.h>
+#include <memspy/engine/memspyengineobjectprocess.h>
+#include <memspy/engine/memspyengineobjectcontainer.h>
+#include <memspy/engine/memspyenginehelperheap.h>
+#include <memspy/engine/memspyenginehelperchunk.h>
+#include <memspy/engine/memspyenginehelpersysmemtrackercycle.h>
+#include <memspy/engine/memspyenginehelpersysmemtrackerobserver.h>
+#include "MemSpyEngineHelperSysMemTrackerEntryManager.h"
+
+// Constants
+const TInt KMemSpyDefaultTrackerTimerPeriod = 30; // Seconds
+
+
+CMemSpyEngineHelperSysMemTrackerImp::CMemSpyEngineHelperSysMemTrackerImp( CMemSpyEngine& aEngine )
+:   CTimer( EPriorityStandard ), iEngine( aEngine )
+    {
+    CActiveScheduler::Add( this );
+    iConfig.iTimerPeriod = TTimeIntervalMicroSeconds32( KMemSpyDefaultTrackerTimerPeriod * 1000000 );
+    }
+
+    
+CMemSpyEngineHelperSysMemTrackerImp::~CMemSpyEngineHelperSysMemTrackerImp()
+    {
+    Cancel();
+    //
+    delete iEntryManager;
+    //
+    iCompletedCycles.ResetAndDestroy();
+    iCompletedCycles.Close();
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::ConstructL()
+    {
+    CTimer::ConstructL();
+    }
+
+
+CMemSpyEngineHelperSysMemTrackerImp* CMemSpyEngineHelperSysMemTrackerImp::NewL( CMemSpyEngine& aEngine )
+    {
+    CMemSpyEngineHelperSysMemTrackerImp* self = new(ELeave) CMemSpyEngineHelperSysMemTrackerImp( aEngine );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::StartL( const TMemSpyEngineHelperSysMemTrackerConfig& aConfig )
+    {
+    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::StartL() - START - timer period: %d", Config().TimerPeriod().Int() ) );
+
+    // Zap any old data
+    Reset();
+
+    // Cache client settings
+    iConfig = aConfig;
+
+    // Make new cycle
+    PrepareInitialCycleL();
+
+    // Start tracking via timer - future updates will by driven by RunL().
+    After( Config().TimerPeriod() );
+    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::END() - START - timer period: %d", Config().TimerPeriod().Int() ) );
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::StopL()
+    {
+    Cancel();
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::SetObserver( MMemSpyEngineHelperSysMemTrackerObserver* aObserver )
+    {
+    iObserver = aObserver;
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::RemoveObserver( MMemSpyEngineHelperSysMemTrackerObserver* aObserver )
+    {
+    if  ( iObserver == aObserver )
+        {
+        iObserver = NULL;
+        }
+    }
+
+
+const RPointerArray< CMemSpyEngineHelperSysMemTrackerCycle >& CMemSpyEngineHelperSysMemTrackerImp::CompletedCycles() const
+    {
+    return iCompletedCycles;
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::Reset()
+    {
+    Cancel();
+    iCompletedCycles.ResetAndDestroy();
+    //
+    if  ( iObserver )
+        {
+        TRAP_IGNORE( iObserver->HandleCyclesResetL() );
+        }
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL()
+    {
+    const TInt count = iCompletedCycles.Count();
+    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL() - START - isActive: %d, cycleCount: %d", IsActive(), count ) );
+
+    if  ( IsActive() )
+        {
+        Cancel();
+        CheckForChangesL();
+        After( Config().TimerPeriod() );
+        }
+    else
+        {
+        // Timer not running, so we're probably being poked by some external-to-memspy client that
+        // wants to force an update.
+        //
+        // If we've never yet performed an initital cycle, then prep that. Otherwise, just proceed as normal
+        // as if we had been called back via RunL().
+        if  ( count == 0 )
+            {
+            PrepareInitialCycleL();
+            }
+        else
+            {
+            CheckForChangesL();
+            }
+        }
+
+    TRACE( RDebug::Printf("CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesNowL() - END - isActive: %d, cycleCount: %d", IsActive(), iCompletedCycles.Count() ) );
+    }
+
+
+TInt CMemSpyEngineHelperSysMemTrackerImp::MdcaCount() const
+    {
+    return iCompletedCycles.Count();
+    }
+
+
+TPtrC CMemSpyEngineHelperSysMemTrackerImp::MdcaPoint( TInt aIndex ) const
+    {
+    const CMemSpyEngineHelperSysMemTrackerCycle* cycleInfo = iCompletedCycles[ aIndex ];
+    const TPtrC ret( cycleInfo->Caption() );
+    return ret;
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::NotifyObserverCycleStartedL( CMemSpyEngineHelperSysMemTrackerCycle& aCycle )
+    {
+    if  ( iObserver )
+        {
+        TRAP_IGNORE( iObserver->HandleCycleStartedL( aCycle ) );
+        }
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::NotifyObserverCycleFinishedL( CMemSpyEngineHelperSysMemTrackerCycle& aCycle )
+    {
+    if  ( iObserver )
+        {
+        TRAP_IGNORE( iObserver->HandleCycleFinishedL( aCycle ) );
+        aCycle.DiscardChanges();
+        }
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::AddCycleAndPopL( CMemSpyEngineHelperSysMemTrackerCycle* aCycle )
+    {
+    iCompletedCycles.AppendL( aCycle );
+    CleanupStack::Pop( aCycle );
+    aCycle->FinalizeL();
+    }
+
+
+CMemSpyEngineHelperSysMemTrackerCycle* CMemSpyEngineHelperSysMemTrackerImp::LastCycleOrNull()
+    {
+    CMemSpyEngineHelperSysMemTrackerCycle* ret = NULL;
+    //
+    const TInt count = iCompletedCycles.Count();
+    if  ( count )
+        {
+        ret = iCompletedCycles[ count - 1 ];
+        }
+    //
+    return ret;
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::PrepareInitialCycleL()
+    {
+    // Create seed items
+    CMemSpyEngineHelperSysMemTrackerEntryManager* entryManager = CMemSpyEngineHelperSysMemTrackerEntryManager::NewL( *this );
+    delete iEntryManager;
+    iEntryManager = entryManager;
+
+    // Everything changes on the first cycle.
+    CMemSpyEngineHelperSysMemTrackerCycle* baselineCycle = CMemSpyEngineHelperSysMemTrackerCycle::NewLC( iConfig );
+    NotifyObserverCycleStartedL( *baselineCycle );
+    iEntryManager->EverythingHasChangedL( *baselineCycle );
+    AddCycleAndPopL( baselineCycle );
+    NotifyObserverCycleFinishedL( *baselineCycle );
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::CheckForChangesL()
+    {
+    // Create info structure 
+    CMemSpyEngineHelperSysMemTrackerCycle* cycle = CMemSpyEngineHelperSysMemTrackerCycle::NewLC( iConfig, LastCycleOrNull() );
+
+    // Notify 
+    NotifyObserverCycleStartedL( *cycle );
+
+    // Find changes
+    iEntryManager->IdentifyChangesL( *cycle );
+
+    // Finalise the cycle and save it
+    AddCycleAndPopL( cycle );
+
+    // Notify
+    NotifyObserverCycleFinishedL( *cycle );
+    }
+
+
+void CMemSpyEngineHelperSysMemTrackerImp::RunL()
+    {
+    CheckForChangesL();
+    After( Config().TimerPeriod() );
+    }
+
+
+TInt CMemSpyEngineHelperSysMemTrackerImp::RunError( TInt aError )
+    {
+    RDebug::Printf( "CMemSpyEngineHelperSysMemTrackerImp::RunError() - aError: %d", aError );
+    (void) aError;
+    //
+    Cancel();
+    After( Config().TimerPeriod() );
+    //
+    return KErrNone;
+    }
+
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