--- a/kernel/eka/drivers/debug/rmdebug/d_process_tracker.cpp	Thu Aug 12 11:55:14 2010 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,500 +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 will be unique
-// as only the Debug Security Server can load and use rm_debug.ldd.
-// 
-//
-
-#include <e32def.h>
-#include <e32def_private.h>
-#include <e32cmn.h>
-#include <e32cmn_private.h>
-#include <kernel/kernel.h>
-#include <kernel/kern_priv.h>
-
-#include <rm_debug_api.h>
-#include "debug_logging.h"
-#include "d_process_tracker.h"
-#include "debug_utils.h"
-
-// Global Run-mode debugged process tracking object
-DProcessTracker TheDProcessTracker;
-
-// ctor
-DProcessTracker::DProcessTracker()
-	{
-	}
-
-/**
- * dtor
- * @internalTechnology
- */
-DProcessTracker::~DProcessTracker()
-	{
-	// Forget about all the iProcesses
-	iProcesses.ResetAndDestroy();
-	}
-
-/**
- * @internalTechnology
- *
- * Creates and stores an internal mapping of debug agent to debugged process.
- * Note that an individual process may be mapped to a number of debug agents.
- *
- * @param aProcessName - The fullly qualified path of the debugged process. E.g. z:\sys\bin\hello_world.exe
- * @param aAgentId - The process id of the debug agent which is attaching to aProcessName, as returned by RProcess.Id()
- * @return KErrNone if there are no errors. KErrArgument if the processname is too long/short for a valid filepath.
- *  KErrNoMemory if there is insufficient memory.
- */
-TInt DProcessTracker::AttachProcess(const TDesC8& aProcessName,TUint64 aAgentId)
-	{
-	LOG_MSG("DProcessTracker::AttachProcess()");
-
-	// Valid ProcessName?
-	if (aProcessName.Length() < 1 || aProcessName.Length() >= KMaxPath)
-		{
-		return KErrArgument;
-		}
-
-	// Create an DTargetProcess to store
-	DTargetProcess* tmpProcess = new DTargetProcess;
-	if (tmpProcess == 0)
-		{
-		return KErrNoMemory;
-		}
-	LOG_MSG2(" AttachProcess: < new DTargetProcess=0x%08x", tmpProcess );
-	
-	// Set the name
-	TInt err = KErrNone;
-	err = tmpProcess->SetProcessName(aProcessName);
-	if (err != KErrNone)
-		{
-		LOG_MSG2(" AttachProcess: < SetProcessName returned %d", err );
-		return err;
-		}
-
-	// Is this process being debugged (ie already attached?)
-	TInt index;
-	TBool found = EFalse;
-	
-	TInt numberOfProcesses = iProcesses.Count();
-	for(index=0; index<numberOfProcesses; index++)
-		{
-		const TPtr8& tmpPtr8(iProcesses[index]->ProcessName() );
-
-		if ( tmpPtr8.CompareF(aProcessName) == 0)
-			{
-			LOG_MSG3(" Proc count=%d, found proc in iProcesses at %d. Count=%d",
-				index, iProcesses.Count() );
-			found = ETrue;
-			break;
-			}
-		}
-
-	if (found)
-		{
-		// Yes, it is being debugged
-
-		// Add the agent to the list of agents for this process
-		LOG_MSG3(" > AddAgent(agent id %d) to existing iProcesses[%d]", I64LOW(aAgentId), index ); 
-
-		iProcesses[index]->AddAgent(aAgentId);
-
-		return KErrNone;
-		}
-	else
-		{
-		// No, it is not being debugged
-			
-		// Add the agent to the list of agents for this process
-		LOG_MSG2(" > AddAgent(agent %d) to new proc at index 0", I64LOW(aAgentId) ); 
-
-		tmpProcess->AddAgent(aAgentId);
-
-		// Add the process to the list of processes being debugged
-		return iProcesses.Insert(tmpProcess,0);
-		}
-	}
-
-/**
- * @internalTechnology
- * 
- * Removes a previously created mapping between a debug agent and a debugged process,
- * as created by AttachProcess.
- *
- * @param aProcessName - The fully qualified path of the debugged process. E.g. z:\sys\bin\hello_world.exe
- * @param aAgentId - The process id of the debug agent which is attaching to aProcessName, as returned by RProcess.Id()
- * @return KErrNone if there are no problems. KErrArgument if the processname is too long/short for a valid filepath.
- * KErrNotFound if the mapping does not exist (and therefore cannot be removed).
- */
-TInt DProcessTracker::DetachProcess(const TDesC8& aProcessName, TUint64 aAgentId)
-	{
-	// Valid ProcessName?
-	if (aProcessName.Length() < 1 || aProcessName.Length() >= KMaxPath)
-		{
-		return KErrArgument;
-		};
-
-	// Are we debugging this process?
-	TInt i;
-	TBool found = EFalse;
-	DTargetProcess* foundProcess = 0;
-
-	TInt numberOfProcesses = iProcesses.Count();
-	for(i=0; i<numberOfProcesses; i++)
-		{
-		foundProcess = iProcesses[i];
-
-		const TPtr8& tmpPtr8( foundProcess->ProcessName() );
-
-		if ( tmpPtr8.CompareF(aProcessName) == 0)
-			{
-			found = ETrue;
-			break;
-			}
-		}
-
-	if (found == EFalse)
-		{
-		return KErrNotFound;
-		}
-
-	// remove the agent from the process
-	iProcesses[i]->RemoveAgent(aAgentId);
-
-	// Found it, are there any more attached agents, or suspended threads in the process?
-	if ((iProcesses[i]->AgentCount() == 0) && !iProcesses[i]->HasSuspendedThreads() )
-		{
-		// Delete the process as no more agents are still attached
-		delete iProcesses[i];
-
-		// Remove the now obsolete pointer from our array.
-		iProcesses.Remove(i);
-		}
-
-	return KErrNone;
-	}
-
-/**
- * @internalTechnology
- *
- * Detachs a debug agent from every process being debugged. Used when a debug agent is being detached
- * from the debug security server and has not supplied a specific process name from which to detach.
- */
-TInt DProcessTracker::DetachAgent(const TUint64 aAgentId)
-	{
-	// Remove this agent from all the processes being tracked.
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i<numberOfProcesses; i++)
-		{
-		// remove the agent from the process (we don't care about the return code)
-		iProcesses[i]->RemoveAgent(aAgentId);
-		}
-
-	// Increment down through the array as we then don't have to worry about
-	// missing entries which have been shifted after deletes.
-	// The initial value of i correspnds to the index of the final element 
-	// in the array.
-	for(TInt i = iProcesses.Count()-1; i>=0; i--)
-		{
-		if (iProcesses[i]->AgentCount() == 0)
-			{
-			// No agents remain for this process. Delete the
-			// process object and remove the pointer from the array
-			delete iProcesses[i];
-			iProcesses.Remove(i);
-			}
-		}
-	return KErrNone;
-	}
-
-/**
- * @internalTechnology
- *
- * Returns a pointer to a DTargetProcess object representing the mapping of a debugged process
- * with all the relevant debug agents interested in that process, as determined
- * by AttachProcess.
- *
- * @param aProcessName - The fully qualified path of the debugged process. E.g. z:\sys\bin\hello_world.exe
- * @return DTargetProcess* pointer to an object representing the internal mapping of a process to all associated
- * debug agents. Returns 0 if the mapping cannot be found or the aProcessName is invalid.
- */
-DTargetProcess* DProcessTracker::FindProcess(const TDesC8& aProcessName)
-	{
-	// Valid ProcessName?
-	if (aProcessName.Length() < 1 || aProcessName.Length() >= KMaxPath)
-		{
-		return 0;	// not found
-		}
-
-	// Can we find this in the array?
-	TInt i;
-	TBool found = EFalse;
-	DTargetProcess* foundProcess = 0;
-
-	TInt numberOfProcesses = iProcesses.Count();
-	for(i=0; i<numberOfProcesses; i++)
-		{
-		foundProcess = iProcesses[i];
-
-		const TPtr8& tmpPtr8( foundProcess->ProcessName() );
-
-		if ( tmpPtr8.CompareF(aProcessName) == 0)
-			{
-			found = ETrue;
-			break;
-			}
-		}
-
-	if (found == EFalse)
-		{
-		LOG_EVENT_MSG("DProcessTracker::FindProcess, not found" );
-		return 0;	// not found
-		}
-
-	return foundProcess;
-	}
-
-/**
- * @internalTechnology
- *
- * Returns a pointer to a DTargetProcess object representing the mapping of a debugged process
- * with all the relevant debug agents interested in that process, as determined
- * by AttachProcess.
- *
- * Note: This does not attempt an exact match, because the AddProcess event does not provide
- * a fully-qualified path, it provides something like [t_rmdebug_security0.exe].
- *
- * So for the purposes of dealing with this event, we need a "fuzzier" match which does not use the complete
- * path.
- *
- * @param aProcessName - The fully qualified path of the debugged process. E.g. z:\sys\bin\hello_world.exe
- * @return DTargetProcess* pointer to an object representing the internal mapping of a process to all associated
- * debug agents. Returns 0 if the mapping cannot be found or the aProcessName is invalid.
- */
-DTargetProcess*	DProcessTracker::FuzzyFindProcess(const TDesC8& aProcessName)
-	{
-	// Valid ProcessName?
-	if (aProcessName.Length() < 1 || aProcessName.Length() >= KMaxPath)
-		{
-		return 0;	// not found
-		}
-
-	// Can we find this in the array?
-	TBool found = EFalse;
-	DTargetProcess* foundProcess = 0;
-	const TChar KBackSlash('\\');
-
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i < numberOfProcesses; i++)
-		{
-		foundProcess = iProcesses[i];
-
-		TInt procListBackSlash = foundProcess->ProcessName().LocateReverse( KBackSlash );
-		if( procListBackSlash == KErrNotFound )
-			{
-			procListBackSlash = 0;
-			}
-		else
-			{
-			//Now move to the char after the backlash
-			procListBackSlash++;
-			}
-
-		TInt eventBackSlash = aProcessName.LocateReverse( KBackSlash );
-		if( eventBackSlash == KErrNotFound )
-			{
-			eventBackSlash = 0;
-			}
-		else
-			{
-			//Now move to the char after the backlash
-			eventBackSlash++;
-			}
-
-		if( ( procListBackSlash == 0 ) && ( eventBackSlash == 0 ) )
-			{
-			//There were no backslashes on either name, so no point in continuing
-			break;
-			}
-
-		TPtrC8 eventCleanName( aProcessName.Mid( eventBackSlash ) );		
-		TPtrC8 procListCleanName( foundProcess->ProcessName().Mid( procListBackSlash ) );
-
-		if ( eventCleanName.CompareF( procListCleanName ) == 0 )
-			{
-			LOG_MSG2("DProcessTracker::FuzzyFindProcess() found a match : process list[%d]", i );
-			found = ETrue;
-			break;
-			}
-		}
-
-	if (found == EFalse)
-		{
-		return 0;	// not found
-		}
-
-	return foundProcess;
-	}
-
-TBool DProcessTracker::CheckSuspended(DThread* aTargetThread) const
-	{
-	//get the file name and return if NULL
-	HBuf* name = GetFileName(aTargetThread);
-	if(!name)
-		{
-		return EFalse;
-		}
-
-	//iterate through the processes trying to match the name, and check suspended if found
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i < numberOfProcesses; i++)
-		{
-		if(iProcesses[i]->ProcessName().CompareF(*name) == 0)
-			{
-			return iProcesses[i]->CheckSuspended(aTargetThread);
-			}
-		}
-
-	//couldn't find the process so return EFalse
-	return EFalse;
-	}
-
-TBool DProcessTracker::CheckSuspended(const TUint64 aTargetThreadId) const
-	{
-	//get a handle to the thread and return false if it's NULL
-	DThread* thread = DebugUtils::OpenThreadHandle(aTargetThreadId);
-	if(!thread)
-		{
-		return EFalse;
-		}
-
-	//check if the thread's suspended and then close the thread handle and return
-	TBool suspended = CheckSuspended(thread);
-	thread->Close(NULL);
-	return suspended;
-	}
-
-/**
-  Attempts to suspend the specified thread
-
-  @param aTargetThread thread to suspend
-
-  @return KErrNone on success, KErrAlreadyExists if the thread is already suspended,
-  or one of the other system wide error codes
-  */
-TInt DProcessTracker::SuspendThread(DThread* aTargetThread, TBool aFreezeThread)
-	{
-	LOG_MSG3("DProcessTracker::SuspendThread() Requesting suspend for: 0x%08x, freeze thread: %d", aTargetThread->iId, aFreezeThread?1:0);
-
-	//get the file name and return if NULL
-	HBuf* name = GetFileName(aTargetThread);
-	if(!name)
-		{
-		return KErrNotFound;
-		}
-
-	//iterate through the processes trying to match the name, try to suspend the thread if found
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i < numberOfProcesses; i++)
-		{
-		if(iProcesses[i]->ProcessName().CompareF(*name) == 0)
-			{
-			return iProcesses[i]->SuspendThread(aTargetThread, aFreezeThread);
-			}
-		}
-
-	//couldn't find process so return error
-	return KErrPermissionDenied;
-	}
-
-void DProcessTracker::FSWait()
-	{
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i < numberOfProcesses; i++)
-		{
-		iProcesses[i]->FSWait();
-		}
-	}
-
-/**
-  Attempts to resume the specified thread
-
-  @param aTargetThread thread to resume
-
-  @return KErrNone on success, KErrInUse if the thread is not suspended,
-  or one of the other system wide error codes
-  */
-TInt DProcessTracker::ResumeThread(DThread* aTargetThread)
-	{
-	LOG_MSG2("DProcessTracker::ResumeThread() Requesting resume for: 0x%08x", aTargetThread->iId);
-
-	//get the file name and return if NULL
-	HBuf* name = GetFileName(aTargetThread);
-	if(!name)
-		{
-		return KErrNotFound;
-		}
-
-	//iterate through the processes trying to match the name, try to resume the thread if found
-	TInt numberOfProcesses = iProcesses.Count();
-	for(TInt i=0; i < numberOfProcesses; i++)
-		{
-		if(iProcesses[i]->ProcessName().CompareF(*name) == 0)
-			{
-			return iProcesses[i]->ResumeThread(aTargetThread);
-			}
-		}
-
-	//couldn't find process so return error
-	return KErrPermissionDenied;
-	}
-
-/**
-  Get a thread's originating file name
-
-  @param aThread the thread to get the file name for
-
-  @return a pointer to the thread's file name, if there are problems accessing
-  the file name then NULL will be returned
-  */
-HBuf* DProcessTracker::GetFileName(DThread* aThread) const
-	{
-	//check if the thread is NULL and return if so
-	if(!aThread)
-		{
-		return NULL;
-		}
-
-	//get the owning process and return if it is NULL
-	DProcess* process = aThread->iOwningProcess;
-	if(!process)
-		{
-		return NULL;
-		}
-
-	//get the process' code seg and return if it is NULL
-	DCodeSeg* codeSeg = process->iCodeSeg;
-	if(!codeSeg)
-		{
-		return NULL;
-		}
-
-	//return the code seg's stored file name (which could theoretically be NULL)
-	return codeSeg->iFileName;
-	}
-