--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/perfsrv/memspy/Driver/Kernel/Include/MemSpyDriverEventMonitor.h	Mon Sep 06 15:00:47 2010 +0300
@@ -0,0 +1,118 @@
+/*
+* 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:
+*
+*/
+
+#ifndef MEMSPYEVENTMONITOR_H
+#define MEMSPYEVENTMONITOR_H
+
+// System includes
+#include <kernel.h>
+#include <kern_priv.h>
+
+// Classes referenced
+class DMemSpyDriverDevice;
+
+// For EMTypeMask
+enum TMemSpyEventMonitorEvent
+    {
+    EMemSpyEventNull                = 0x0000,
+    //
+    EMemSpyEventThreadAdd           = 0x0001,
+    EMemSpyEventThreadRemove        = 0x0002,
+    EMemSpyEventThreadKill          = 0x0004,
+    //
+    EMemSpyEventProcessAdd          = 0x0008,
+    EMemSpyEventProcessUpdate       = 0x0010,
+    EMemSpyEventProcessRemove       = 0x0020,
+    //
+    EMemSpyEventChunkAdd            = 0x0040,
+    EMemSpyEventChunkUpdate         = 0x0080,
+    EMemSpyEventChunkDelete         = 0x0100,
+    };
+
+
+class MMemSpyEventMonitorObserver
+	{
+public: // From MMemSpyEventMonitorObserver
+    virtual TUint EMTypeMask() const = 0;
+    //
+    virtual void EMHandleProcessAdd( DProcess& /*aProcess*/ ) { }
+    virtual void EMHandleProcessUpdated( DProcess& /*aProcess*/ ) { }
+    virtual void EMHandleProcessRemoved( DProcess& /*aProcess*/ ) { }
+    //
+    virtual void EMHandleThreadAdd( DThread& /*aThread*/ ) { }
+    virtual void EMHandleThreadRemoved( DThread& /*aThread*/ ) { }
+    virtual void EMHandleThreadKilled( DThread& /*aThread*/ ) { }
+    //
+    virtual void EMHandleChunkAdd( DChunk& /*aChunk*/ ) { }
+    virtual void EMHandleChunkUpdated( DChunk& /*aChunk*/ ) { }
+    virtual void EMHandleChunkDeleted( DChunk& /*aChunk*/ ) { }
+
+public: // Nasty, but I don't care...
+    SDblQueLink __iEMLink;
+    };
+
+
+
+class DMemSpyEventMonitor : public DKernelEventHandler
+	{
+public:
+	DMemSpyEventMonitor();
+	~DMemSpyEventMonitor();
+
+public: // Device API
+    TInt Create( DMemSpyDriverDevice* aDevice );
+	TInt Start();
+	TInt Stop();
+	
+public: // API
+    TInt RequestEvents( MMemSpyEventMonitorObserver& aObserver );
+    TInt RequestEventsCancel( MMemSpyEventMonitorObserver& aObserver );
+
+private: // Handle kernel event callbacks
+	static TUint EventHandler( TKernelEvent aEvent, TAny* a1, TAny* a2, TAny* aThis );
+	TUint HandleEvent( TKernelEvent aType, TAny* a1, TAny* a2 );
+    //
+	void EventProcessAdd( DProcess* aProcess );
+	void EventProcessUpdate( DProcess* aProcess );
+	void EventProcessRemoved( DProcess* aProcess );
+	//
+	void EventThreadAdd( DThread* aThread );
+	void EventThreadRemoved( DThread* aThread );
+	void EventThreadKilled( DThread* aThread );
+    //
+	void EventChunkAdd( DChunk* aChunk );
+	void EventChunkUpdate( DChunk* aChunk );
+	void EventChunkDelete( DChunk* aChunk );
+
+private: // Internal methods
+    TBool IsObserving( MMemSpyEventMonitorObserver& aObserver ); 
+
+private:
+	/** Lock serialising calls to event handler */
+	DMutex* iLock;
+
+    /** open reference to LDD for avoiding lifetime issues */
+	DLogicalDevice* iDevice;
+
+    // List of observers
+	SDblQue iObservers;
+	
+	// Whether we are tracking or not
+	TBool iTracking;
+	};
+
+#endif