diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kerneltest/e32test/debug/t_logtofile.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/kernelhwsrv/kerneltest/e32test/debug/t_logtofile.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,298 @@
+// Copyright (c) 2005-2009 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:
+// e32test\debyg\LogToFile.cpp
+// t_logtofile.exe tests (alongside with d_logtofile.ldd) trace handler hook (TTraceHandler).
+// Usage:
+// 1. start t_logtofile -p=Pattern
+// - Starts logging into memory.(RDebug::Pring, NKern::Print & PletSec log are all considered).
+// - Only logs that start with "Pattern" will be logged (case sensitive).Leave '-p=' empty to log them all.
+// - All debug loggings to serial port (or epocwnd.out on emulator) are suppressed.
+// - There are 64KB memory available for the log. Once the memory is full, the logging stops.
+// 2. start t_logtofile stop
+// - Stops the logging (unless already stopped due to full memory).
+// - Transfers collected logs into c:\logtofile.dat
+// The format of the file is as follows:
+// The pattern:		Pattern
+// Buffer Size is:		65536
+// Fast counter freq:	3579545
+// 93559955	U	MsgSent
+// 108774945	K	Thread t_suser.EXE::Main created @ 0x973fe8 - Win32 Thread ID 0xbbc
+// 108810756	U	RTEST TITLE: T_SUSER 2.00(1013)
+// The first column is the current value of the fast counter.
+// The second column indicates U - user side, K - kernel or P-PlatSec logging.
+// 
+//
+
+#include <e32debug.h>
+#include <e32cons.h>
+#include <f32file.h>
+#include <e32base.h>
+#include <e32base_private.h>
+#include "d_logtofile.h"
+
+
+// The name of the output file use to save the sample data
+_LIT(KFileName,"C:\\LogToFile.DAT");
+_LIT(KAppName,"Logtofile");
+const TInt KHeapSize=0x2000;
+
+#define KPatternMaxSize 10
+TBuf8<KPatternMaxSize> Pattern;
+
+/**Server*/
+class CLogToFileServer : public CServer2
+	{
+public:
+	static CLogToFileServer* New(TInt aPriority) {return new CLogToFileServer(aPriority);}
+private:
+	CLogToFileServer(TInt aPriority) : CServer2(aPriority){}
+	CSession2* NewSessionL(const TVersion& aVersion,const RMessage2& aMessage) const;
+public:
+static RLogToFileDevice iDevice;
+static TChunkCreateStr iChunkStr;
+static RChunk Chunk;
+
+	};
+
+/**Session*/
+class CLogToFileSession : public CSession2
+	{
+public:
+	enum TState {EStart, EStop};
+private:
+	void ServiceL(const RMessage2& aMessage);
+	TInt Stop();
+	TInt Start();
+	};
+
+/*Client-side session*/
+class RLogToFileSession : private RSessionBase
+	{
+public:
+public:
+	static inline TInt Start(){return Control(CLogToFileSession::EStart);}
+	static inline TInt Stop() {return Control(CLogToFileSession::EStop);}
+private:
+	static inline TInt Control(CLogToFileSession::TState aRequest);
+	};
+
+//------------globals---------------------
+RLogToFileDevice CLogToFileServer::iDevice;
+TChunkCreateStr  CLogToFileServer::iChunkStr;
+RChunk           CLogToFileServer::Chunk;
+
+
+/**Creates a new client for this server.*/
+CSession2* CLogToFileServer::NewSessionL(const TVersion&, const RMessage2&) const
+	{
+	return new(ELeave) CLogToFileSession();
+	}
+
+/**Entry point of the session request*/
+void CLogToFileSession::ServiceL(const RMessage2& aMessage)
+	{
+	TInt r=KErrNone;
+	switch (aMessage.Function())
+		{
+	case EStart:
+		{
+		r = Start();
+		break;
+		}
+	case EStop:
+		{
+		r = Stop();
+		CActiveScheduler::Stop();//This will stop the server thread.
+		break;
+		}
+	default:
+		r=KErrNotSupported;
+		}
+	aMessage.Complete(r);
+	}
+
+/**
+This will:
+ - Load t_logtofile.ldd
+ - Tell ldd to create the chunk
+ - Tell ldd to start logging
+*/
+TInt CLogToFileSession::Start()
+	{
+	TInt r = User::LoadLogicalDevice(KLogToFileName);
+	if(r !=KErrNone && r!=KErrAlreadyExists)
+		return r;
+	if((r = CLogToFileServer::iDevice.Open())!=KErrNone)	
+		{
+		User::FreeLogicalDevice(KLogToFileName);
+		return r;
+		}
+	CLogToFileServer::iChunkStr.iSize = 0x10000; //64K chunk size - hard coded
+	if((r=CLogToFileServer::iDevice.CreateChunk(&CLogToFileServer::iChunkStr))<0)
+	{
+		User::FreeLogicalDevice(KLogToFileName);
+		return r;
+	}
+	CLogToFileServer::Chunk.SetHandle(r);
+	CLogToFileServer::iDevice.Start();	
+	return KErrNone;
+}
+
+/**
+This will:
+ - Tell ldd to stop logging
+ - Put the content of the chunk into c:\logtofile.dat
+ - Tell ldd to close the chunk
+ - Unload t_logtofile.ldd
+*/
+TInt CLogToFileSession::Stop()
+{
+	TInt bytes = CLogToFileServer::iDevice.Stop();	
+
+	
+	RFs fs;
+	RFile file;
+	TInt r;
+	TRequestStatus status;
+
+	if(KErrNone != (r = fs.Connect()))
+		return r;
+	if(KErrNone != (r = file.Replace(fs, KFileName,EFileWrite)))
+		{
+		fs.Close();
+		return r;
+		}
+
+	TPtrC8 log(CLogToFileServer::Chunk.Base(),bytes);
+	file.Write(log,status);
+	User::WaitForRequest(status);
+	r = status.Int();
+	file.Close();
+	fs.Close();
+	CLogToFileServer::Chunk.Close();
+
+	CLogToFileServer::iDevice.RemoveChunk();	
+	User::FreeLogicalDevice(KLogToFileName);
+	return r;
+}
+
+/**Sends request to the server*/
+TInt RLogToFileSession::Control(CLogToFileSession::TState aRequest)
+	{
+	RLogToFileSession p;
+	TInt r = p.CreateSession(KAppName, TVersion(), 0);
+	if (r == KErrNone)
+		p.SendReceive(aRequest);
+	return r;
+	}
+
+/**The entry point for the server thread.*/
+LOCAL_C TInt serverThreadEntryPoint(TAny*)
+	{
+	TInt r=0;
+	CLogToFileServer* pS=0;
+	
+	CActiveScheduler *pR=new CActiveScheduler;
+	if (!pR) User::Panic(_L("Create ActSchdlr error"), KErrNoMemory);
+	CActiveScheduler::Install(pR);
+
+	pS=CLogToFileServer::New(0);
+	if (!pS)
+	{
+		delete pR;
+		User::Panic(_L("Create svr error"), KErrNoMemory);
+	}
+
+	r=pS->Start(KAppName);
+	if(r)
+		{
+		delete pS;
+		delete pR;
+		User::Panic(_L("Start svr error"), r);
+		}
+
+	RThread::Rendezvous(KErrNone);
+	CActiveScheduler::Start();
+	delete pS;
+	delete pR;
+	return(KErrNone);
+	}
+
+/**Reads the command line and set the matching pattern to be - what is after '-p='*/
+void SetPattern(void)
+	{
+	_LIT8(KPattern,"-p=");
+	TBuf<64> c;
+	User::CommandLine(c);
+	#if defined(_UNICODE)
+	TPtr8 ptr = c.Collapse();
+	#else
+	TPtr8 ptr(c.Ptr(),c.Length(),c.MaxLEngth());
+	#endif
+
+	TInt patternStart = ptr.FindF(KPattern);
+	if (patternStart < 0)
+		{
+		Pattern.SetLength(0);
+		return;
+		}
+	patternStart+=3;
+	
+	TPtrC8 pattern (ptr.Ptr()+patternStart,Min(ptr.Length()-patternStart, KPatternMaxSize) );
+	CLogToFileServer::iChunkStr.iPattern.Copy(pattern);
+	}
+
+/**The main program if we have to start logging
+   It creates the server and sends start-logging request.*/
+void MainL()
+	{
+	RThread server;
+	TRequestStatus status;
+	TInt r = 0;
+
+	SetPattern();
+	r=server.Create(_L("LogToFileServer"),serverThreadEntryPoint,KDefaultStackSize,KHeapSize,KHeapSize,NULL);
+	User::LeaveIfError(r);
+	server.Resume();
+	server.Rendezvous(status);
+	User::WaitForRequest(status);
+	User::LeaveIfError(status.Int());
+
+	User::LeaveIfError(RLogToFileSession::Start());
+
+	server.Logon(status);
+	User::WaitForRequest(status);
+	}
+
+/**Returns true if 'stop' is found in the command line*/
+TBool GetStop()
+	{
+	_LIT(KStop,"stop");
+	TBuf<64> c;
+	User::CommandLine(c);
+	if (c.FindF(KStop) >= 0)
+		return ETrue;
+	return EFalse;
+	}
+
+/**LogToFile.exe entry point*/
+TInt E32Main()
+	{
+	if (GetStop())
+		return RLogToFileSession::Stop();
+
+	CTrapCleanup::New();
+	TRAPD(r,MainL());
+	return r;
+	}