--- a/kernel/eka/drivers/debug/rmdebug/d_target_process.cpp	Wed Aug 18 11:08:29 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,420 +0,0 @@
-// 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: The DProcessTracker object tracks which processes are being
-// debugged. The DProcessTracker class uses a DTargetProcess object for
-// each process being debugged.
-// Note: Although TheDProcessTracker object is a global, it should be unique
-// as only the Debug Security Server should load and use this driver.
-//
-//
-
-#include <e32def.h>
-#include <e32def_private.h>
-#include <e32cmn.h>
-#include <e32cmn_private.h>
-#include <kernel/kernel.h>
-#include <kernel/kern_priv.h>
-#include "nk_priv.h"
-#include <rm_debug_api.h>
-
-#include "d_target_process.h"
-#include "debug_logging.h"
-#include "debug_utils.h"
-
-// ctor
-DTargetProcess::DTargetProcess()
-	:iProcessName(0,0,0)
-	{
-	}
-
-// dtor
-DTargetProcess::~DTargetProcess()
-	{
-	// Delete the space allocated for the name if any
-	if (iProcessName.Ptr() != 0)
-		{
-		NKern::ThreadEnterCS();
-		Kern::Free((TAny*)iProcessName.Ptr());
-		NKern::ThreadLeaveCS();
-		}
-	//Reset the array and delete the objects that its members point to
-	NKern::ThreadEnterCS();
-	iAgentList.ResetAndDestroy();
-	NKern::ThreadLeaveCS();
-	}
-
-// Compare two DTargetProcess items. They are the same if they have the same name.
-TInt DTargetProcess::Compare(const DTargetProcess& aFirst, const DTargetProcess& aSecond)
-	{
-	return aFirst.iProcessName.Compare(aSecond.iProcessName);
-	}
-
-// Set the name of the process we are tracking
-TInt DTargetProcess::SetProcessName(const TDesC8& aProcessName)
-	{
-	// Argument checking
-	if (aProcessName.Length() < 1)
-		{
-		return KErrArgument;
-		}
-
-	// Allocate some memory to store the name
-	TUint length = aProcessName.Length();
-
-	NKern::ThreadEnterCS();
-	TUint8* buffer = (TUint8*)Kern::AllocZ(length);
-	NKern::ThreadLeaveCS();
-	if (buffer==NULL)
-		{
-		// Out of memory
-		return KErrNoMemory;
-		}
-
-	// Set iProcessName to use the alloc'd buffer
-	iProcessName.Set(buffer,length,length);
-
-	// Store aProcessName within this object
-	iProcessName.Copy(aProcessName);
-
-	return KErrNone;
-	}
-
-// Obtain the name of the process being tracked
-const TPtr8& DTargetProcess::ProcessName(void)
-	{
-	return iProcessName;
-	}
-
-// Returns a pointer to the DDebugAgent with aAgentId.
-// If the agent is not in the list, it returns NULL.
-DDebugAgent* DTargetProcess::Agent(TUint64 aAgentId)
-	{
-	for(TInt i = 0; i < iAgentList.Count(); i++)
-		{
-		if (iAgentList[i]->Id() == aAgentId)
-			{
-			return iAgentList[i];
-			}
-		}
-
-	// what do we return if we don't have any agents?
-	return NULL;
-	}
-
-// Adds aAgentId as a tracking agent for this process.
-TInt DTargetProcess::AddAgent(TUint64 aAgentId)
-	{
-	
-	DDebugAgent* agent = DDebugAgent::New(aAgentId);
-	LOG_MSG4("DTargetProcess::AddAgent(), agentId=%d, curr iAgentList.Count=%d, new agent=0x%08x",
-		I64LOW(aAgentId), iAgentList.Count(), agent );
-
-	if(agent == NULL)
-		{
-		LOG_MSG("DTargetProcess::AddAgent() couldn't allocate memory for DDebugAgent");
-		return KErrNoMemory;
-		}
-	return iAgentList.Insert(agent,0);
-	}
-
-// Stops tracking the process with this agent
-TInt DTargetProcess::RemoveAgent(TUint64 aAgentId)
-	{
-	// We need to find and then remove the agent
-	for(TUint i = 0; i < iAgentList.Count(); i++)
-		{
-		if (iAgentList[i]->Id() == aAgentId)
-			{
-			delete iAgentList[i];
-			iAgentList.Remove(i);
-			return KErrNone;
-			}
-		}
-
-	return KErrNotFound;
-	}
-
-// Index through the agents by position
-DDebugAgent* DTargetProcess::operator[](TInt aIndex)
-	{
-	return iAgentList[aIndex];
-	}
-
-// returns the number of agents tracking this process.
-TInt DTargetProcess::AgentCount(void)
-	{
-	return iAgentList.Count();
-	}
-
-/**
-  Resume the specified thread
-
-  @param aThread thread to resume
-
-  @return KErrNone if the thread has previously been suspended and is resumed,
-  KErrNotFound if the thread has not previously been suspended
-  */
-TInt DTargetProcess::ResumeThread(DThread* aThread)
-	{
-	LOG_MSG2("DTargetProcess::ResumeSuspendedThread(): thread=0x%08x", aThread);
-	TInt err1 = ResumeSuspendedThread(aThread);
-	LOG_MSG2("DTargetProcess::ResumeSuspendedThread(): ret=%d)", err1); 
-	TInt err2 = ResumeFrozenThread(aThread->iNThread);
-	LOG_MSG2("DTargetProcess::ResumeFrozenThread(): ret=%d)", err2);
-	//if resuming the suspended thread failed for an obscure reason return it
-	if((err1 != KErrNotFound) && (err1 != KErrNone))
-		{
-		LOG_MSG2("DTargetProcess::ResumeThread() BUG : unexpected exit, err1: %d", err1);
-		return err1;
-		}
-	//if resuming the frozen thread failed for an obscure reason return it
-	if((err2 != KErrNotFound) && (err2 != KErrNone))
-		{
-		LOG_MSG2("DTargetProcess::ResumeThread() BUG : unexpected exit, err2: %d", err2);
-		return err2;
-		}
-	// if resuming the suspended thread succeeded in both cases, we have a consistency problem
-	if ((err1 == KErrNone) && (err2 == KErrNone))
-		{
-		LOG_MSG("DTargetProcess::ResumeThread() BUG : unexpected exit, err1 == err2 == KErrNone");
-		}
-
-	//if the thread was in neither list return KErrNotFound, otherwise KErrNone
-	return ((err1 == KErrNone) || (err2 == KErrNone)) ? KErrNone : KErrNotFound;
-	}
-
-/**
-  Resume the specified frozen thread
-
-  @param aThread thread to resume
-
-  @return KErrNone if the thread has previously been suspended and is resumed,
-  KErrNotFound if the thread has not previously been suspended
-  */
-TInt DTargetProcess::ResumeFrozenThread(NThread& aThread)
-	{
-	for(TInt i=0; i<iFrozenThreadSemaphores.Count(); i++)
-		{
-		if(iFrozenThreadSemaphores[i]->iOwningThread == &aThread)
-			{
-			NKern::FSSignal(iFrozenThreadSemaphores[i]);
-			NKern::ThreadEnterCS();
-			delete iFrozenThreadSemaphores[i];
-			NKern::ThreadLeaveCS();
-			iFrozenThreadSemaphores.Remove(i);
-			return KErrNone;
-			}
-		}
-	return KErrNotFound;
-	}
-
-/**
-  Resume the specified suspended thread
-
-  @param aThread thread to resume
-
-  @return KErrNone if the thread has previously been suspended and is resumed,
-  KErrNotFound if the thread has not previously been suspended
-  */
-TInt DTargetProcess::ResumeSuspendedThread(DThread* aThread)
-	{
-	TUint64 threadId = (TUint64)aThread->iId;
-	for(TInt i=0; i<iSuspendedThreads.Count(); i++)
-		{
-		if(iSuspendedThreads[i] == threadId)
-			{
-			iSuspendedThreads.Remove(i);
-			LOG_MSG2("DTargetProcess::ResumeSuspendedThread()> Kern::ThreadResume() 0x%08x", aThread);
-			Kern::ThreadResume(*aThread);
-			return KErrNone;
-			}
-		}
-	return KErrNotFound;
-	}
-
-/**
-  Suspend the specified thread
-
-  @param aThread thread to suspend
-
-  @param aFreezeThread suspend the thread on a Fast Semaphore if
-  ETrue. EFalse means suspend by calling Kern::Suspend.
-
-  @return KErrNone if the thread is successfully suspended,
-  KErrAlreadyExists if the agent has already suspended the thread,
-  or one of the other system wide error codes
-  
-   This function suspends a thread by calling Kern::Thread Suspend.
-                                                                                                       
-  An alternative means of suspending the _current_ thread only
-  is by call DTargetProcess::FreezeThread. This will ensure that
-  the current thread is suspended when exception processing for this
-  thread completes (see rm_debug_eventhandler.cpp)
-  
-  */
-TInt DTargetProcess::SuspendThread(DThread* aThread, TBool aFreezeThread)
-	{
-	// should check if this thread is already suspended/frozen and return if so
-	// but just warn for the moment.
-	if (CheckSuspended(aThread))
-		{
-		// thread was already suspended, don't bother doing it again
-		LOG_MSG2("DTargetProcess::SuspendThread - Thread Id 0x%08x already suspended\n",aThread->iId);
-		//return KErrAlreadyExists;	
-		}
-
-	return aFreezeThread ? FreezeThread() : DoSuspendThread(aThread);
-	}
-
-/**
-  Freeze the current thread
-
-  @return KErrNone if the thread is successfully suspended,
-  KErrAlreadyExists if the agent has already suspended the thread,
-  or one of the other system wide error codes
-
-  This marks the current thread for waiting on a Fast Semaphore
-  when exception handling for this thread has completed - see
-  rm_debug_eventhandler.cpp for details.
-  */
-TInt DTargetProcess::FreezeThread()
-	{
-	// create and store a fast semaphore to stop the thread on
-	NKern::ThreadEnterCS();
-	NFastSemaphore* sem = new NFastSemaphore();
-	NKern::ThreadLeaveCS();
-	sem->iOwningThread = &(Kern::CurrentThread().iNThread);
-	LOG_MSG3("DTargetProcess::FreezeThread(): new NFastSemaphore() owning thread==curr NThread=0x%08x, DThread=0x%08x", 
-		sem->iOwningThread, &(Kern::CurrentThread()) );
-	return iFrozenThreadSemaphores.Append(sem);
-	}
-
-/**
-  Suspend the specified thread
-
-  @param aThread thread to suspend
-
-  @return KErrNone if the thread is successfully suspended,
-  KErrAlreadyExists if the agent has already suspended the thread,
-  or one of the other system wide error codes
-  */
-TInt DTargetProcess::DoSuspendThread(DThread* aThread)
-	{
-	TUint64 threadId = (TUint64)aThread->iId;
-	
-	// Don't suspend if this thread is already suspended (by FSWait or
-	// Kern::ThreadSuspend
-	if (CheckSuspended(aThread))
-		{
-		// thread was already suspended, don't bother doing it again
-		LOG_MSG2("DTargetProcess::SuspendThread - Thread Id 0x%08x already suspended\n",threadId);
-		return KErrAlreadyExists;	
-		}
-
-	// Add thread to the suspend list
-	TInt err = iSuspendedThreads.Append(threadId);
-	if(err == KErrNone)
-		{
-		LOG_MSG2("DTargetProcess::DoSuspendThread >Kern::ThreadSuspend() 0x%08x", aThread ); 
-		Kern::ThreadSuspend(*aThread, 1);
-		}
-	return err;
-	}
-
-/**
- Waits the current thread on a Fast Semaphore.
-
- This is useful for situations where the current thread
- has hit a breakpoint within a critical section, and
- otherwise could not be suspended at this point.
-
- Note that the Fast Semaphore structure on which the thread
- waits must be a member data item of this class instance,
- as it needs to be FSSignal()'d by another thread to resume
- again.
- */
-void DTargetProcess::FSWait()
-	{
-	NThread* currentNThread = &(Kern::CurrentThread().iNThread);	
-	for(TInt i=0; i<iFrozenThreadSemaphores.Count(); i++)
-		{
-		if(iFrozenThreadSemaphores[i]->iOwningThread == currentNThread)
-			{
-			LOG_MSG4("DTargetProcess::FSWait(): > FSWait frozen sem %d, currentNThread=0x%08x, id=0x%x", 
-				i, currentNThread, Kern::CurrentThread().iId );
-			NKern::FSWait(iFrozenThreadSemaphores[i]);
-			return;
-			}
-		}
-	}
-
-/**
-  Checks that the thread has been suspended
-
-  @param aThread thread to check suspended
-
-  @return ETrue if the thread has been suspended,
-  EFalse if the thread has not been suspended
-  */
-TBool DTargetProcess::CheckSuspended(DThread* aThread) const
-	{
-	if(!aThread)
-		{
-		return EFalse;
-		}
-	//check if the thread is in the suspended threads list
-	for(TInt i=0; i<iSuspendedThreads.Count(); i++)
-		{
-		if(iSuspendedThreads[i] == (TUint64)aThread->iId)
-			{
-			return ETrue;
-			}
-		}
-	// not in the suspended threads list so check in the frozen threads list
-	NThread* nThread = &(aThread->iNThread);
-	for(TInt i=0; i<iFrozenThreadSemaphores.Count(); i++)
-		{
-		if(iFrozenThreadSemaphores[i]->iOwningThread == nThread)
-			{
-			return ETrue;
-			}
-		}
-	return EFalse;
-	}
-
-/*
-@return ETrue if the debug driver has suspended any of the process' threads, EFalse otherwise
-*/
-TBool DTargetProcess::HasSuspendedThreads() const
-	{
-	return (iSuspendedThreads.Count() > 0) || (iFrozenThreadSemaphores.Count() > 0);
-	}
-
-void DTargetProcess::NotifyEvent(const TDriverEventInfo& aEventInfo)
-	{
-	// Stuff the event info into all the tracking agents event queues
-	LOG_MSG4("DTargetProcess::NotifyEvent(): num attached agents: %d, iEventType=%d, this=0x%08x", 
-		AgentCount(), aEventInfo.iEventType, this);
-
-	for(TInt i = 0; i < AgentCount(); i++)
-		{
-		// Index through all the relevant debug agents
-		DDebugAgent* debugAgent = iAgentList[i];
-		if(debugAgent != NULL)
-			{
-			debugAgent->NotifyEvent(aEventInfo);
-			}
-		}
-	}
-