--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/inc/tracer.h	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2007 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:   
+*
+*/
+#ifndef __TTRACER_H__
+#define __TTRACER_H__
+
+#include <e32std.h>
+#include <e32svr.h>
+#include <f32file.h>
+
+//#ifdef _DEBUG
+#define TRACER_ENABLED
+//#else
+//#undef TRACER_ENABLED
+//#endif
+
+/** Macro to initialise the tracer. Set the indentation level to zero. */
+#ifdef TRACER_ENABLED
+#define INITTRACE TTracer t
+#else
+#define INITTRACE
+#endif
+
+/** Macro to trace the function calls.
+  * @param a Text to display. Usually class::function */
+#ifdef TRACER_ENABLED
+#define TRACE(a) TTracer t(_L(a))
+#else
+#define TRACE(a)
+#endif
+
+/** Macro to print a string to the trace window.
+  * @param a Text to print.
+  */
+#ifdef TRACER_ENABLED
+#define TRACESTR(a) TTracer::Print(_L(a))
+#else
+#define TRACESTR
+#endif
+
+/** 
+ * @ingroup group_xnutils
+ * 
+ * Class for tracing function calls. Indentation shows the call tree.
+ * Also the entry and leave points are time labeled, show timing info is available. 
+ */
+class TTracer
+{
+public:
+	/** Initialising constructor. */
+	IMPORT_C TTracer();
+
+	/** Tracing constructor.
+	  * Writes time lable and "Enter: " + the given string.
+	  */
+	IMPORT_C TTracer(TPtrC aString);
+
+	/** Destructor.
+	  * Writes time lable and "Leave: " + the given string.
+	  */
+	IMPORT_C ~TTracer();
+
+	/** Prints the given string to the trace window.
+	  * @param a Text to print.
+	  */
+    IMPORT_C static void Print(TPtrC aString);
+//    static TInt Print(TRefByValue<const TDesC> aFmt,...);
+
+private:
+    RFs iFs;
+
+	TBuf<255> iString;
+//	RFileLogger iFLogger;
+};
+
+
+#endif // __TTRACER_H__