--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/presencecache/presencecachesymbian/presencecacheutils/inc/prestrace.h	Fri Sep 17 08:27:32 2010 +0300
@@ -0,0 +1,146 @@
+/*
+* Copyright (c) 2008 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:  Presence Cache trace utilities
+*
+*/
+
+#ifndef PRESTRACE_H__
+#define PRESTRACE_H__
+
+#include <e32std.h>
+
+
+// CONSTANTS
+_LIT( KPresenceTraceLogDir, "presence" );
+_LIT( KPresenceTraceLogFile, "presence.log" );
+
+
+ //TRACE INDIRECTION
+#ifdef _DEBUG
+
+    /**
+     * Trace handlers. Different statements with 
+     * different names for handling different parameter amounts.
+     *
+     * Statements produce traces only in debug builds.
+     * In hardware debug builds traces go to file defined
+     * KPresenceTraceLogDir and KPresenceTraceLogFile.
+     */
+    #define TRACE( aStatement ) PresenceTrace::Trace( aStatement )
+    #define TRACE_1( aStatement, aP1 ) PresenceTrace::Trace( aStatement, aP1 )
+    #define TRACE_2( aStatement, aP1, aP2 ) PresenceTrace::Trace( aStatement, aP1, aP2 )
+    #define TRACE_3( aStatement, aP1, aP2, aP3 ) PresenceTrace::Trace( aStatement, aP1, aP2, aP3 )
+    #define TRACE_4( aStatement, aP1, aP2, aP3, aP4 ) PresenceTrace::Trace( aStatement, aP1, aP2, aP3, aP4 )
+    #define TRACE_5( aStatement, aP1, aP2, aP3, aP4, aP5 ) PresenceTrace::Trace( aStatement, aP1, aP2, aP3, aP4, aP5 )
+    #define TRACE_6( aStatement, aP1, aP2, aP3, aP4, aP5, aP6 ) PresenceTrace::Trace( aStatement, aP1, aP2, aP3, aP4, aP5, aP6 )
+
+
+    /**
+     * Block (and thus also function) trace handlers. These 
+     * mark block enter, exit and also non local exit to traces.
+     *
+     * Example:
+     * void CSomeClass::SomeMethod()
+     *      {
+     *      TRACE_BLOCK_ENTER( "CSomeClass::SomeMethod" );
+     *
+     *      Do your stuff here. If there happens a leave
+     *      or return before "TRACE_BLOCK_EXIT()" statement,
+     *      it is marked to traces with "CSomeClass::SomeMethod - nonlocal exit"
+     *
+     *      TRACE_BLOCK_EXIT();
+     *      }
+     */
+    #define TRACE_BLOCK_ENTER( aBlockName ) TPresenceBlockTraceHandler __blockTraceHandler( _S( aBlockName ) );
+    #define TRACE_BLOCK_EXIT() __blockTraceHandler.NormalExit();
+
+
+
+#else //NOT _DEBUG
+
+    #define TRACE( aStatement )
+    #define TRACE_1( aStatement, aP1 )
+    #define TRACE_2( aStatement, aP1, aP2 )
+    #define TRACE_3( aStatement, aP1, aP2, aP3 )
+    #define TRACE_4( aStatement, aP1, aP2, aP3, aP4 )
+    #define TRACE_5( aStatement, aP1, aP2, aP3, aP4, aP5 )
+    #define TRACE_6( aStatement, aP1, aP2, aP3, aP4, aP5, aP6 )
+    #define TRACE_BLOCK_ENTER( aBlockName )
+    #define TRACE_BLOCK_EXIT()
+
+#endif
+
+
+
+/**
+ * trace sink.
+ */
+class PresenceTrace
+    {
+public:
+
+    /**
+     * Trace sink.
+     *
+     * @param aFmt A format list to print to trace.
+     */
+    IMPORT_C static void Trace( TRefByValue<const TDesC> aFmt,... );
+
+
+
+private: //Prohibited construtor / destructor
+    PresenceTrace();
+    ~PresenceTrace();
+    };
+
+
+
+/**
+ * Block trace handler.
+ */
+NONSHARABLE_CLASS( TPresenceBlockTraceHandler )
+    {
+public:
+
+    /**
+     * Block trace handler constructor.
+     *
+     * @param aBlockName Block name.
+     */
+    TPresenceBlockTraceHandler( const TText* aBlockName );
+
+
+    /**
+     * Block trace handler destructor.
+     */
+    ~TPresenceBlockTraceHandler();
+
+
+    /**
+     * Marks that block has reached its normal exit.
+     */
+    void NormalExit();
+
+
+private:
+    //Block name
+    const TPtrC   iBlockName;
+
+    //Normal exit marker
+    TBool iBlockNormalExit;
+};
+
+
+#endif  // PRESTRACE_H__
+