--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dbgagents/trkagent/eka2driver/TrkEventHandler.cpp	Tue Mar 02 10:33:16 2010 +0530
@@ -0,0 +1,398 @@
+/*
+* Copyright (c) 2004 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 <e32def.h>
+#include <e32cmn.h>
+#include <arm.h>
+#include <kernel.h>
+#include <kern_priv.h>
+#include <nk_trace.h>
+
+#include "TrkKernelDriver.h"
+#include "TrkDriver.h"
+#include "TrkEventHandler.h"
+
+
+DMetroTrkEventHandler::DMetroTrkEventHandler()
+	:	DKernelEventHandler(EventHandler, this)
+{
+	LOG_MSG("DMetroTrkEventHandler::DMetroTrkEventHandler()");
+
+}
+
+
+TInt DMetroTrkEventHandler::Create(DLogicalDevice* aDevice, DLogicalChannel* aChannel, DThread* aClient)
+{
+	LOG_MSG("DMetroTrkEventHandler::Create()");
+
+	TInt err;
+	err = aDevice->Open();
+	if (err != KErrNone)
+		return err;
+	iDevice = aDevice;
+	
+	iChannel = aChannel; //Don't add ref the channel, since channel closes the event handler before it ever gets destroyed.
+
+	err = aClient->Open();
+	if (err != KErrNone)
+		return err;
+	iClientThread = aClient;
+
+	// Use a semaphore to protect our data structures from concurrent access.
+	err = Kern::SemaphoreCreate(iLock, _L("TrkEventHandlerLock"), 1 /* Initial count */);
+
+	if (err != KErrNone)
+		return err;
+	
+	return Add();
+}
+
+
+DMetroTrkEventHandler::~DMetroTrkEventHandler()
+{
+	LOG_MSG("DMetroTrkEventHandler::~DMetroTrkEventHandler()");
+
+	if (iLock)
+		iLock->Close(NULL);
+	
+	if (iDevice)
+		iDevice->Close(NULL);	
+	
+	if (iClientThread)
+		Kern::SafeClose((DObject*&)iClientThread, NULL);
+		
+}
+
+
+TInt DMetroTrkEventHandler::Start()
+{
+	LOG_MSG("DMetroTrkEventHandler::Start()");
+
+	TInt r = KErrNone;
+	iTracking = ETrue;
+	return r;
+}
+
+
+TInt DMetroTrkEventHandler::Stop()
+{
+	LOG_MSG("DMetroTrkEventHandler::Stop()");
+
+	//NKern::ThreadEnterCS();
+	//Kern::SemaphoreWait(*iLock);
+	iTracking = EFalse;
+	//Kern::SemaphoreSignal(*iLock);
+	//NKern::ThreadLeaveCS();
+	
+	return KErrNone;
+}
+
+
+TUint DMetroTrkEventHandler::EventHandler(TKernelEvent aType, TAny* a1, TAny* a2, TAny* aThis)
+{
+	return ((DMetroTrkEventHandler*)aThis)->HandleEvent(aType, a1, a2);
+}
+
+TUint DMetroTrkEventHandler::HandleEvent(TKernelEvent aType, TAny* a1, TAny* a2)
+{
+	if (iTracking)
+	{
+		iCounters[aType]++;
+		switch (aType)
+		{
+			case EEventSwExc:
+			{
+				if (HandleSwException((TExcType)(TInt)a1))
+					return (TUint)DKernelEventHandler::EExcHandled;
+			}
+				
+			case EEventHwExc:
+			{
+				if (HandleHwException((TArmExcInfo*)a1))
+					return (TUint)DKernelEventHandler::EExcHandled; 
+			}
+			case EEventUpdateProcess:
+			case EEventAddThread:
+			case EEventUpdateThread:
+			case EEventRemoveThread:
+			case EEventNewChunk:
+			case EEventDeleteChunk:				
+			//currently we don't handle any of these events;
+				break;				
+			case EEventAddProcess:
+			{			
+				AddProcess((DProcess*)a1, (DThread*)a2);
+				break;
+			}		
+			case EEventRemoveProcess:
+			{
+				RemoveProcess((DProcess*)a1);
+				break;
+			}
+			case EEventStartThread:
+			{
+				StartThread((DThread*)a1);
+				break;
+			}
+			// According to Symbian, the only way to catch panics in EKA2 is through this event.
+			case EEventKillThread:
+			{
+				if (HandleEventKillThread((DThread*)a1))
+					return (TUint)DKernelEventHandler::EExcHandled; 
+				break;
+			}
+			case EEventAddLibrary:
+			{
+				AddLibrary((DLibrary*)a1, (DThread*)a2);
+				break;
+			}
+				
+			case EEventRemoveLibrary:
+			{
+				RemoveLibrary((DLibrary*)a1);
+				break;
+			}
+			
+			case EEventUserTrace:
+			{
+				HandleUserTrace((TText*)a1, (TInt)a2);
+				break;
+			}
+			case EEventAddCodeSeg:
+			{
+				//
+				// EventAddCodeSeg is not fired for all libs, for example, if a static lib is in ROM,
+				// then you don't need get AddCodeSeg event for that lib.
+				// 
+				//AddCodeSegment((DCodeSeg*)a1, (DProcess*)a2);
+				break;
+			}			
+			case EEventRemoveCodeSeg:
+			{
+				// RemoveCodeSegment((DCodeSeg*)a1, (DProcess*)a2);
+				break;
+			}
+			default:
+				break;
+		}
+	}
+	return DKernelEventHandler::ERunNext;
+}
+
+//
+// DMetroTrkEventHandler::HandleEventKillThread
+//
+
+TBool DMetroTrkEventHandler::HandleEventKillThread(DThread* aThread)
+{
+	LOG_MSG("DMetroTrkEventHandler::HandleEventKillThread()");
+	
+	//NKern::ThreadEnterCS();
+	//Kern::SemaphoreWait(*iLock);
+	
+	TBool ret = ((DMetroTrkChannel*)iChannel)->HandleEventKillThread(aThread);
+		
+	//Kern::SemaphoreSignal(*iLock);
+	//NKern::ThreadLeaveCS();
+	
+	return ret;
+}
+
+
+//
+// DMetroTrkEventHandler::HandleSwException
+//
+
+TBool DMetroTrkEventHandler::HandleSwException(TExcType aExcType)
+{
+	LOG_MSG("DMetroTrkEventHandler::HandleSwException()");
+	
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	TBool ret = ((DMetroTrkChannel*)iChannel)->HandleSwException(aExcType);
+	
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+	
+	return ret;
+}
+
+//
+// DMetroTrkEventHandler::HandleHwException
+//
+
+TBool DMetroTrkEventHandler::HandleHwException(TArmExcInfo* aExcInfo)
+{
+	LOG_MSG("DMetroTrkEventHandler::HandleHwException()");
+	
+	TBool ret = EFalse;
+		
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+
+	if (aExcInfo)
+	{
+		ret = ((DMetroTrkChannel*)iChannel)->HandleHwException(aExcInfo);
+	}
+	
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+	
+	return ret;
+}
+
+//
+// DMetroTrkEventHandler::HandleUserTrace
+//
+TBool DMetroTrkEventHandler::HandleUserTrace(TText* aStr, TInt aLen)
+{
+	LOG_MSG("DMetroTrkEventHandler::HandleUserTrace()");
+	TBool ret = EFalse;
+
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (aStr && aLen > 0)
+	{
+		ret = ((DMetroTrkChannel*)iChannel)->HandleUserTrace(aStr, aLen);
+	}
+	
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+	
+	return ret;
+}
+
+//
+// DMetroTrkEventHandler::AddProcess
+//
+void DMetroTrkEventHandler::AddProcess(DProcess* aProcess, DThread *aThread)
+{
+	LOG_MSG("DMetroTrkEventHandler::AddProcess()");
+	
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aProcess && aThread)
+		((DMetroTrkChannel*)iChannel)->AddProcess(aProcess, aThread);
+
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+
+//
+// DMetroTrkEventHandler::StartThread
+//
+void DMetroTrkEventHandler::StartThread(DThread *aThread)
+{
+	LOG_MSG("DMetroTrkEventHandler::StartThread()");
+	
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aThread)
+		((DMetroTrkChannel*)iChannel)->StartThread(aThread);
+
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+//
+// DMetroTrkEventHandler::RemoveProcess
+//
+void DMetroTrkEventHandler::RemoveProcess(DProcess *aProcess)
+{
+	LOG_MSG("DMetroTrkEventHandler::RemoveProcess()");
+
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aProcess)
+		((DMetroTrkChannel*)iChannel)->RemoveProcess(aProcess);
+		
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+
+//
+// DMetroTrkEventHandler::AddLibrary
+//
+void DMetroTrkEventHandler::AddLibrary(DLibrary *aLibrary, DThread *aThread)
+{
+	LOG_MSG("DMetroTrkEventHandler::AddLibrary()");
+	
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aLibrary)
+		((DMetroTrkChannel*)iChannel)->AddLibrary(aLibrary, aThread);
+
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+
+//
+// DMetroTrkEventHandler::RemoveLibrary
+//
+void DMetroTrkEventHandler::RemoveLibrary(DLibrary *aLibrary)
+{
+	LOG_MSG("DMetroTrkEventHandler::RemoveLibrary()");
+
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aLibrary)
+		((DMetroTrkChannel*)iChannel)->RemoveLibrary(aLibrary);
+	
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+
+//
+// DMetroTrkEventHandler::AddCodeSegment
+//
+void DMetroTrkEventHandler::AddCodeSegment(DCodeSeg *aCodeSeg, DProcess *aProcess)
+{
+	LOG_MSG("DMetroTrkEventHandler::AddCodeSegment()");
+
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+	
+	if (iChannel && aCodeSeg && aProcess)
+		((DMetroTrkChannel*)iChannel)->AddCodeSegment(aCodeSeg, aProcess);
+		
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}
+
+//
+// DMetroTrkEventHandler::RemoveCodeSegment
+//
+void DMetroTrkEventHandler::RemoveCodeSegment(DCodeSeg *aCodeSeg, DProcess *aProcess)
+{
+	LOG_MSG("DMetroTrkEventHandler::RemoveCodeSegment()");
+
+	NKern::ThreadEnterCS();
+	Kern::SemaphoreWait(*iLock);
+
+	if (iChannel && aCodeSeg && aProcess)
+		((DMetroTrkChannel*)iChannel)->RemoveCodeSegment(aCodeSeg, aProcess);
+	
+	Kern::SemaphoreSignal(*iLock);
+	NKern::ThreadLeaveCS();
+}