diff -r a151135b0cf9 -r aa2539c91954 tracesrv/tracecore/btrace_handler/inc/TraceCoreNotificationReceiver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tracesrv/tracecore/btrace_handler/inc/TraceCoreNotificationReceiver.h	Fri Oct 08 14:56:39 2010 +0300
@@ -0,0 +1,116 @@
+// Copyright (c) 2007-2010 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:
+// Base class for notification receivers of TraceCore
+// 
+
+#ifndef __TRACECORENOTIFICATIONRECEIVER_H__
+#define __TRACECORENOTIFICATIONRECEIVER_H__
+
+// Include files
+#include <kernel/kernel.h>
+#include <opensystemtrace_types.h>
+
+
+
+/**
+ * Base class for notification receivers of TraceCore
+ */
+class MTraceCoreNotificationReceiver
+    {
+public:
+
+    /**
+     * Constructor
+     */
+    IMPORT_C MTraceCoreNotificationReceiver();
+
+    /**
+     * Destructor
+     */
+    IMPORT_C virtual ~MTraceCoreNotificationReceiver();
+
+    /**
+     * Register notification receiver by component id
+     * 
+     * @param aComponentId The component ID
+     */
+    IMPORT_C TInt RegisterNotificationReceiver( TUint32 aComponentId );
+
+    /**
+     * Register notification receiver
+     * 
+     * @param aComponentId The component ID
+     * @param aGroupId The group ID    
+     */
+    IMPORT_C TInt RegisterNotificationReceiver( TUint32 aComponentId, TInt32 aGroupId  );
+
+    /**
+     * Unregister notification receiver
+     * 
+     * @param aComponentId
+     */
+    IMPORT_C void UnregisterNotificationReceiver( TUint32 aComponentId );
+
+    /**
+     * Unregister notification receiver
+     * 
+     * @param aComponentId The component ID
+     * @param aGroupId The group ID    
+     */
+    IMPORT_C void UnregisterNotificationReceiver( TUint32 aComponentId, TInt32 aGroupId  );
+    
+    /**
+     * Callback function for Trace Activation
+     * 
+     * @param aComponentId
+     * @param aGroupId         
+     */
+    virtual void TraceActivated( TUint32 aComponentId, TUint16 aGroupId  ) = 0;
+    
+    /**
+     * Callback function for Trace Deactivation
+     * 
+     * @param aComponentId The component ID
+     * @param aGroupId The group ID    
+     */
+    virtual void TraceDeactivated( TUint32 aComponentId, TUint16 aGroupId  ) = 0;
+    
+    /**
+     * Callback function for trace error
+     * 
+     * @param aComponentId The component ID
+     * @param aGroupId The group ID    
+     * @param aError The reason for error
+     */
+    IMPORT_C virtual void TraceError( TUint32 aComponentId, TUint32 aGroupId, TInt aError  );
+
+private:
+
+    /**
+     * Unregister all components of this receiver. Called from destructor.
+     */
+    void UnregisterNotificationReceiver();
+
+    };
+
+/**
+ * @deprecated Please use MTraceCoreNotificationReceiver instead 
+ */
+class DTraceCoreNotificationReceiver : public DBase, public MTraceCoreNotificationReceiver
+    {
+    };
+
+#endif
+
+// End of File