diff -r 000000000000 -r a41df078684a kernel/eka/drivers/debug/rmdebug/d_debug_agent.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/drivers/debug/rmdebug/d_debug_agent.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,72 @@
+// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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:
+// Purpose: Kernel-side tracking of debug agent information associated
+// with each process being debugged.
+// 
+//
+
+#ifndef D_DEBUG_AGENT_H
+#define D_DEBUG_AGENT_H
+
+#include <rm_debug_api.h>
+#include "d_driver_event_info.h"
+
+class DDebugAgent : public DBase
+{
+public:
+	static DDebugAgent* New(TUint64);
+	~DDebugAgent();
+
+	TInt SetEventAction(Debug::TEventType aEvent, Debug::TKernelEventAction aEventAction);
+	void GetEvent(TClientDataRequest<Debug::TEventInfo>* aAsyncGetValueRequest, Debug::TEventInfo* aEventInfo, DThread* aClientThread);
+	TInt EventAction(Debug::TEventType aEvent);
+
+	TInt CancelGetEvent(void);
+	void NotifyEvent(const TDriverEventInfo& aEventInfo);
+	TUint64 Id();
+
+protected:
+	DDebugAgent(TUint64 aId);
+	TInt Construct();
+
+private:
+	void QueueEvent(TDriverEventInfo& aEventInfo);
+	TBool BufferEmpty() const;
+	TBool BufferFull() const;
+	TBool BufferCanStoreEvent() const;
+	TBool BufferAtCriticalLevel() const;
+	void IncrementPosition(TInt& aPosition);
+	TInt NumberOfEmptySlots() const;
+
+private:
+	TUint64	iId;
+	Debug::TKernelEventAction iEventActions[Debug::EEventsLast];
+
+	//iEventInfo is a pointer to an object owned by the security server, so
+	//no clean up needs be performed on it
+	Debug::TEventInfo* iEventInfo;
+	RArray<TDriverEventInfo> iEventQueue;	// ring buffer.
+	TClientDataRequest<Debug::TEventInfo>* iRequestGetEventStatus;
+	DThread* iClientThread;
+
+	// Ring buffer data
+	TInt iHead;	// points to the next empty slot in iEventQueue (exc. when iFull == ETrue)
+	TInt iTail; // points to the oldest full slot in iEventQueue (exc. when iEmpty == ETrue)
+	
+	//if we have told the agent that we are ignoring trace events
+	TBool iIgnoringTrace;
+};
+
+#endif // D_DEBUG_AGENT_H
+