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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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#ifndef MEMSPYEVENTMONITOR_H
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#define MEMSPYEVENTMONITOR_H
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// System includes
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#include <kernel.h>
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#include <kern_priv.h>
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// Classes referenced
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class DMemSpyDriverDevice;
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// For EMTypeMask
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enum TMemSpyEventMonitorEvent
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{
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EMemSpyEventNull = 0x0000,
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//
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EMemSpyEventThreadAdd = 0x0001,
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EMemSpyEventThreadRemove = 0x0002,
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EMemSpyEventThreadKill = 0x0004,
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//
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EMemSpyEventProcessAdd = 0x0008,
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EMemSpyEventProcessUpdate = 0x0010,
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EMemSpyEventProcessRemove = 0x0020,
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//
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EMemSpyEventChunkAdd = 0x0040,
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EMemSpyEventChunkUpdate = 0x0080,
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EMemSpyEventChunkDelete = 0x0100,
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};
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class MMemSpyEventMonitorObserver
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{
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public: // From MMemSpyEventMonitorObserver
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virtual TUint EMTypeMask() const = 0;
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//
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virtual void EMHandleProcessAdd( DProcess& /*aProcess*/ ) { }
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virtual void EMHandleProcessUpdated( DProcess& /*aProcess*/ ) { }
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virtual void EMHandleProcessRemoved( DProcess& /*aProcess*/ ) { }
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//
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virtual void EMHandleThreadAdd( DThread& /*aThread*/ ) { }
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virtual void EMHandleThreadRemoved( DThread& /*aThread*/ ) { }
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virtual void EMHandleThreadKilled( DThread& /*aThread*/ ) { }
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//
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virtual void EMHandleChunkAdd( DChunk& /*aChunk*/ ) { }
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virtual void EMHandleChunkUpdated( DChunk& /*aChunk*/ ) { }
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virtual void EMHandleChunkDeleted( DChunk& /*aChunk*/ ) { }
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public: // Nasty, but I don't care...
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SDblQueLink __iEMLink;
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};
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NONSHARABLE_CLASS(DMemSpyEventMonitor) : public DKernelEventHandler
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{
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public:
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DMemSpyEventMonitor();
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~DMemSpyEventMonitor();
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public: // Device API
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TInt Create( DMemSpyDriverDevice* aDevice );
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TInt Start();
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TInt Stop();
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public: // API
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TInt RequestEvents( MMemSpyEventMonitorObserver& aObserver );
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TInt RequestEventsCancel( MMemSpyEventMonitorObserver& aObserver );
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private: // Handle kernel event callbacks
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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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void EventProcessAdd( DProcess* aProcess );
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void EventProcessUpdate( DProcess* aProcess );
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void EventProcessRemoved( DProcess* aProcess );
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//
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void EventThreadAdd( DThread* aThread );
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void EventThreadRemoved( DThread* aThread );
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void EventThreadKilled( DThread* aThread );
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//
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void EventChunkAdd( DChunk* aChunk );
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void EventChunkUpdate( DChunk* aChunk );
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void EventChunkDelete( DChunk* aChunk );
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private: // Internal methods
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TBool IsObserving( MMemSpyEventMonitorObserver& aObserver );
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private:
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/** Lock serialising calls to event handler */
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DMutex* iLock;
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/** open reference to LDD for avoiding lifetime issues */
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DLogicalDevice* iDevice;
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// List of observers
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SDblQue iObservers;
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// Whether we are tracking or not
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TBool iTracking;
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};
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#endif
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