/*+
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* Copyright (c) 2004 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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+
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+
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/** Event handler and container for all objects being tracked.  */+
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#ifndef __TRKEVENTHANDLER_H__+
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#define __TRKEVENTHANDLER_H__+
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+
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+
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class DMetroTrkEventHandler : public DKernelEventHandler+
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{+
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	public:+
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		DMetroTrkEventHandler();+
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		TInt Create(DLogicalDevice* aDevice, DLogicalChannel* aChannel, DThread* aClient);+
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		~DMetroTrkEventHandler();+
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		TInt Start();+
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		TInt Stop();+
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		+
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	private:+
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		static TUint EventHandler(TKernelEvent aEvent, TAny* a1, TAny* a2, TAny* aThis);+
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		TUint HandleEvent(TKernelEvent aType, TAny* a1, TAny* a2);+
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		+
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		TBool HandleEventKillThread(DThread* a1);+
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		TBool HandleSwException(TExcType aExcType);+
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		TBool HandleHwException(TArmExcInfo* aExcInfo);+
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		TBool HandleUserTrace(TText* aStr, TInt aLen);+
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		+
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		void AddProcess(DProcess *aProcess, DThread *aThread);+
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		void StartThread(DThread *aThread);+
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		void RemoveProcess(DProcess *aProcess);+
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		void AddLibrary(DLibrary *aLibrary, DThread *aThread);+
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		void RemoveLibrary(DLibrary *aLibrary);+
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		void AddCodeSegment(DCodeSeg *aCodeSeg, DProcess *aProcess);+
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		void RemoveCodeSegment(DCodeSeg *aCodeSeg, DProcess *aProcess);+
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+
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	private:+
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		/** Lock serialising calls to event handler */+
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		DSemaphore* iLock;+
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		TBool iTracking;+
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		/** Tracking list (of TTrackedObject).+
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			Must be accessed only when tracking is disabled or with iLock held.+
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			Object addresses are used as keys and so must be unique.+
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		 */+
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		TInt iOOM;+
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		TInt iErrorCount;+
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		TInt iCounters[EEventLimit];+
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		+
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		DLogicalDevice* iDevice;	// open reference to LDD for avoiding lifetime issues+
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		DThread* iClientThread;+
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		DLogicalChannel* iChannel;+
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};+
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+
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#endif //__TRKEVENTHANDLER_H__+
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