diff -r 000000000000 -r 15bf7259bb7c uiaccelerator_plat/alf_tracing_api/inc/alf/alfmetricsinterface.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uiaccelerator_plat/alf_tracing_api/inc/alf/alfmetricsinterface.h	Tue Feb 02 07:56:43 2010 +0200
@@ -0,0 +1,120 @@
+/*
+* Copyright (c) 2006 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:   Application UI definition
+*
+*/
+
+
+
+#ifndef M_ALFMETRICSINTERFACE_H
+#define M_ALFMETRICSINTERFACE_H
+
+#include <e32base.h>
+#include <e32cmn.h>
+
+class MAlfTraceInterface;
+
+class MAlfMetricsInterface
+    {
+public:
+    /**
+     * New message from client has arrived. If the message shouldn't be processed futhther by session,
+     * Message must be completed in the implementation of method
+     *
+     * @param aSessionId identifies the session which received the message.
+     * @param aMessage refence to arrived message
+     *
+     */
+    virtual void EnterClientMessageL(TInt aSessionId, const RMessage2& aMessage) = 0;
+    
+    /**
+     * Handling of message has been completed in server, server is about to enter back to active status 
+     *
+     * @param aSessionId identifies the session which received the message.
+     * @param aMessage refence to arrived message
+     *
+     */
+    virtual void ExitClientMessage(TInt aSessionId, const RMessage2& aMessage) = 0;
+    
+    /**
+     * Called when new session is created on the server.
+     *
+     * @param aSessionId Session id for new session
+     *
+     */
+    virtual void SessionCreated(TInt aSessionId) = 0;
+    
+    /**
+     * Called when session is closing down on the server.
+     *
+     * @param aSessionId Session id for the session
+     *
+     */
+    virtual void SessionTerminated(TInt aSessionId) = 0;
+    
+    /**
+     * Get trace object for session id.
+     *
+     * @since S60 v3.2
+     * @param aSessionId Session id
+     * @return Trace object, or NULL in case of unknown session id
+     */
+    virtual MAlfTraceInterface* GetTraceForSession(TInt aSessionId) const = 0;
+
+    /**
+     * Make new session be the default session
+     *
+     * @since S60 v3.2
+     * @param aSessionId Session id
+     *
+     */
+    virtual void PushDefaultSession(TInt aSessionId) = 0;
+
+    /**
+     * Restore to previous default session.
+     *
+     * @since S60 v3.2
+     *
+     */
+    virtual void PopDefaultSession() = 0;
+    
+    /**
+     * Get trace object for default session. If there's no default session defined, the
+     * auxiliary trace will be returned.
+     *
+     * @since S60 v3.2
+     * @return Trace object for default session
+     */
+    virtual MAlfTraceInterface& GetDefaultSessionTrace() const = 0;
+
+    /**
+     * Get the current default session id. If there's no default session defined,
+     * the id will be 0.
+     *
+     * @since S60 v3.2
+     * @return The default session id
+     */
+    virtual TInt GetDefaultSessionId() const = 0;
+
+    /**
+     * Get auxiliary trace object for tracing without exact session id.
+     *
+     * @since S60 v3.2
+     * @param aSessionId Session id
+     * @return Trace object, or NULL in case of unknown session id
+     */
+    virtual MAlfTraceInterface& GetAuxiliaryTrace() const = 0;
+    };
+
+#endif // M_ALFMETRICSINTERFACE_H