--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commands/showdebug/showdebug.cpp	Thu Oct 21 22:32:59 2010 +0100
@@ -0,0 +1,298 @@
+// showdebug.cpp
+// 
+// Copyright (c) 2010 Accenture. All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the "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:
+// Accenture - Initial contribution
+//
+
+#include <fshell/ioutils.h>
+#include <fshell/common.mmh>
+#include <fshell/debugrouter.h>
+#include <HAL.h>
+
+using namespace IoUtils;
+
+class CCmdShowDebug : public CCommandBase, public MCommandExtensionsV2
+	{
+public:
+	static CCommandBase* NewLC();
+	~CCmdShowDebug();
+private:
+	CCmdShowDebug();
+	void Log(TUint8 aWhere, TUint32 aTickCount, TUint aThreadId, const TDesC8& aMsg);
+	inline TTime TickCountToTime(TUint32 aTickCount) const;
+
+private: // From CCommandBase.
+	virtual const TDesC& Name() const;
+	virtual void DoRunL();
+	virtual void ArgumentsL(RCommandArgumentList& aArguments);
+	virtual void OptionsL(RCommandOptionList& aOptions);
+	virtual void DoCancel();
+	virtual void RunL();
+
+private: // From MCommandExtensionsV2
+	virtual void CtrlCPressed();
+
+
+	class CLogonCompleter : public CActive
+		{
+	public:
+		CLogonCompleter(CCmdShowDebug* aCommand) : CActive(CActive::EPriorityStandard), iCommand(aCommand)
+			{
+			CActiveScheduler::Add(this);
+			iCommand->iProcess.Process().Logon(iStatus);
+			SetActive();
+			}
+		void RunL() { iCommand->Complete(iStatus.Int()); }
+		void DoCancel() { iCommand->iProcess.Process().LogonCancel(iStatus); }
+		~CLogonCompleter() { Cancel(); }
+
+	private:
+		CCmdShowDebug* iCommand;
+		};
+
+private:
+	RCloggerDebugRouter iRouter;
+	RChunk iChunk;
+	TBuf8<2048> iTempBuf;
+	TBuf<2048> iTempWideBuf;
+	RChildProcess iProcess;
+	CLogonCompleter* iCompleter;
+	TInt64 iStartupTickInMicroseconds;
+	TTime iTimeAtStartup;
+	TInt iTickFreq;
+
+	HBufC* iProcessName;
+	HBufC* iArgs;
+	RArray<TBool> iVerbose;
+	TBool iFilter;
+	};
+
+EXE_BOILER_PLATE(CCmdShowDebug)
+
+CCommandBase* CCmdShowDebug::NewLC()
+	{
+	CCmdShowDebug* self = new(ELeave) CCmdShowDebug();
+	CleanupStack::PushL(self);
+	self->BaseConstructL();
+	return self;
+	}
+
+CCmdShowDebug::~CCmdShowDebug()
+	{
+	Cancel();
+	if (iRouter.Handle())
+		{
+		iRouter.EnableDebugRouting(RCloggerDebugRouter::EDisable);
+		}
+	iRouter.Close();
+	iChunk.Close();
+	delete iCompleter;
+	if (iProcess.Process().Handle() && iProcess.Process().ExitType() == EExitPending)
+		{
+		iProcess.Process().Kill(KErrAbort);
+		}
+	iProcess.Close();
+	delete iProcessName;
+	delete iArgs;
+	}
+
+CCmdShowDebug::CCmdShowDebug()
+	: CCommandBase(EManualComplete | ECaptureCtrlC)
+	{
+	SetExtension(this);
+	}
+
+const TDesC& CCmdShowDebug::Name() const
+	{
+	_LIT(KName, "showdebug");	
+	return KName;
+	}
+
+void CCmdShowDebug::ArgumentsL(RCommandArgumentList& aArguments)
+	{
+	aArguments.AppendStringL(iProcessName, _L("process"));
+	aArguments.AppendStringL(iArgs, _L("arguments"));
+	}
+
+void CCmdShowDebug::OptionsL(RCommandOptionList& aOptions)
+	{
+	aOptions.AppendBoolL(iVerbose, _L("verbose"));
+	aOptions.AppendBoolL(iFilter, _L("filter"));
+	}
+
+void CCmdShowDebug::DoRunL()
+	{
+	TInt err = RCloggerDebugRouter::LoadDriver();
+	if (err != KErrAlreadyExists) LeaveIfErr(err, _L("Couldn't load clogger debug router"));
+	LeaveIfErr(iRouter.Open(), _L("Couldn't open debug router"));
+	LeaveIfErr(iRouter.OpenChunk(iChunk), _L("Couldn't open debug router shared chunk"));
+	LeaveIfErr(iRouter.EnableDebugRouting(RCloggerDebugRouter::EEnableRouting), _L("Couldn't enable routing"));
+
+	iRouter.ReceiveData(iStatus);
+	SetActive();
+
+	if (iProcessName)
+		{
+		TRAPL(iProcess.CreateL(*iProcessName, iArgs ? *iArgs : KNullDesC(), IoSession(), Stdin(), Stdout(), Stderr(), Env()), _L("Failed to execute %S"), iProcessName);
+		iCompleter = new(ELeave) CLogonCompleter(this);
+		SetErrorReported(ETrue); // So that if iProcess completes with an error it doesn't cause a strange printout when we complete with its error code
+		iProcess.Process().Resume();
+		}
+
+	if (iVerbose.Count())
+		{
+		// Need to do some maths to figure out how to translate tick counts to time
+		TUint32 tickCount = User::NTickCount();
+		iTimeAtStartup.UniversalTime();
+		TInt tickPeriod;
+		User::LeaveIfError(HAL::Get(HAL::ENanoTickPeriod, tickPeriod));
+		iTickFreq = 1000000 / tickPeriod; // We work in frequencies because they are the round numbers when using the fast counter, and at some point we might want to again
+
+		iStartupTickInMicroseconds = ((TInt64)tickCount * 1000000) / (TInt64)iTickFreq; // Just making damn sure we're using 64bit math
+		}
+	}
+
+void CCmdShowDebug::DoCancel()
+	{
+	iRouter.CancelReceive();
+	}
+
+TPtrC8 Read(TDes8& aTempBuf, TPtrC8& aData, TInt aLength, TPtrC8& aOverflowData)
+	{
+	if (aLength <= aData.Length())
+		{
+		// Can read it from this buffer
+		TPtrC8 res(aData.Left(aLength));
+		aData.Set(aData.Mid(aLength));
+		return res;
+		}
+	else /*if (aLength > aData.Length())*/
+		{
+		// Descriptor spans wrap point, so need to copy into temp buf
+		aTempBuf.Copy(aData.Left(aTempBuf.MaxLength())); // If anyone's crazy enough to write a platsec diagnostic string longer than 2k, it gets truncated
+		TInt overflowLen = aLength - aData.Length();
+		aData.Set(aOverflowData); // Wrap aData
+		aOverflowData.Set(TPtrC8());
+		if (overflowLen > aData.Length())
+			{
+			ASSERT(EFalse); // Shouldn't happen
+			// in urel, return everything we've got
+			return aData;
+			}
+		aTempBuf.Append(aData.Left(overflowLen));
+		aData.Set(aData.Mid(overflowLen));
+		return TPtrC8(aTempBuf);
+		}
+	}
+
+void CCmdShowDebug::RunL()
+	{
+	TUint chunkSize = iChunk.Size();
+	const TUint KDataStartOffset = sizeof(SDebugChunkHeader);
+	SDebugChunkHeader* chunkHeader = (SDebugChunkHeader*)iChunk.Base();
+	TUint start = chunkHeader->iStartOffset;
+	TUint end = chunkHeader->iEndOffset;
+	TUint overflows = chunkHeader->iOverflows;
+
+	TBool wrap = (start > end);
+	TUint endLen = wrap ? chunkSize - start : end - start;
+	TUint startLen = wrap ? end - KDataStartOffset : 0;
+
+	TPtrC8 endData(iChunk.Base() + start, endLen);
+	TPtrC8 startData;
+	if (wrap) startData.Set(iChunk.Base() + KDataStartOffset, startLen);
+	TPtrC8 data(endData);
+
+	while (data.Length())
+		{
+		TPtrC8 header = Read(iTempBuf, data, sizeof(SCloggerTraceInfo), startData);
+		if (header.Length() < (TInt)sizeof(SCloggerTraceInfo))
+			{
+			ASSERT(EFalse); // for udeb
+			break; // Something's broken
+			}
+		SCloggerTraceInfo info;
+		Mem::Copy(&info, header.Ptr(), sizeof(SCloggerTraceInfo));
+		ASSERT(info.iTraceType == 'K' || info.iTraceType == 'U' || info.iTraceType == 'P');
+		TPtrC8 msg = Read(iTempBuf, data, info.iLength, startData);
+		Log(info.iTraceType, info.iTickCount, info.iThreadId, msg);
+		}
+	if (overflows)
+		{
+		_LIT(KErr, "RDebug::Print buffer overflowed, %u calls not logged");
+		PrintWarning(KErr, overflows);
+		}
+
+	iRouter.ReceiveData(iStatus);
+	SetActive();
+	}
+
+void CCmdShowDebug::Log(TUint8 /*aWhere*/, TUint32 aTickCount, TUint aThreadId, const TDesC8& aMsg)
+	{
+	RThread thread; thread.SetHandle(0);
+	if (iVerbose.Count() > 1 || iFilter)
+		{
+		// Need to open the thread in those cases
+		thread.Open(aThreadId);
+		}
+
+	if (iFilter && thread.Handle())
+		{
+		RProcess proc;
+		TInt err = thread.Process(proc);
+		if (!err)
+			{
+			if (proc.Id() != iProcess.Process().Id())
+				{
+				// Trace definitely doesn't belong to our process, skip it
+				proc.Close();
+				thread.Close();
+				return;
+				}
+			}
+		}
+	
+	if (iVerbose.Count())
+		{
+		TDateTime dt = TickCountToTime(aTickCount).DateTime();
+		_LIT(KFormat, "%i-%02i-%02i %02i:%02i:%02i.%03i: ");
+		// Have to add 1 to Month and Day, as these are zero-based
+		iTempWideBuf.Format(KFormat, dt.Year(), dt.Month()+1, dt.Day()+1, dt.Hour(), dt.Minute(), dt.Second(), dt.MicroSecond()/1000);
+		if (iVerbose.Count() > 1 && thread.Handle())
+			{
+			TFullName name = thread.FullName();
+			iTempWideBuf.AppendFormat(_L("%S "), &name);
+			}
+		else
+			{
+			// Just use thread id
+			iTempWideBuf.AppendFormat(_L("[%d] "), aThreadId);
+			}
+		Write(iTempWideBuf);
+		}
+
+	thread.Close();
+	
+	iTempWideBuf.Copy(aMsg);
+	Write(iTempWideBuf);
+	Write(_L("\r\n"));
+	}
+
+void CCmdShowDebug::CtrlCPressed()
+	{
+	// TODO clean up iProcess
+
+	Printf(_L("CTRL-C received, exiting.\r\n"));
+	Complete();
+	}
+
+inline TTime CCmdShowDebug::TickCountToTime(TUint32 aTickCount) const
+	{
+	return TTime(iTimeAtStartup.Int64() + (((TInt64)aTickCount*1000000) / (TInt64)iTickFreq) - iStartupTickInMicroseconds);
+	}