diff -r a151135b0cf9 -r aa2539c91954 tracesrv/tracecore/btrace_handler/src/TraceCoreActivationBase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tracesrv/tracecore/btrace_handler/src/TraceCoreActivationBase.cpp	Fri Oct 08 14:56:39 2010 +0300
@@ -0,0 +1,125 @@
+// 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 activation objects
+//
+#ifdef __SMP__
+#include <nkernsmp/nkern.h>
+#endif
+#include "TraceCoreActivationBase.h"
+#include "TraceCore.h"
+#include "TraceCoreDebug.h"
+#include "TraceCoreMessageSender.h"
+#include "OstTraceDefinitions.h"
+#ifdef OST_TRACE_COMPILER_IN_USE
+#include "TraceCoreActivationBaseTraces.h"
+#endif
+
+
+
+/**
+ * Constructor
+ */
+DTraceCoreActivationBase::DTraceCoreActivationBase()
+#if defined(__SMP__)
+: iActivationReadLock(TSpinLock::EOrderBTrace-1)
+#endif 
+    {
+    }
+
+
+/**
+ * Destructor
+ */
+DTraceCoreActivationBase::~DTraceCoreActivationBase()
+    {
+    }
+
+
+/**
+ * Subscribes to message ID and registers to activation interface list
+ * 
+ * @param aMessageID the message id to be subscribed
+ */         
+TInt DTraceCoreActivationBase::Init( TUint32 aMessageId )
+    {
+    // Subscribes to a message by message ID
+    TInt err = Subscribe( aMessageId );
+    if ( err == KErrNone )
+        {
+        // If subscribe succeeds, GetInstance will not return NULL
+        err = DTraceCore::GetInstance()->RegisterActivation( *this );
+        }
+ 
+    TC_TRACE( ETraceLevelFlow, Kern::Printf( "<DTraceCoreActivationBase::Init() - %d", err ) );
+    return err;
+    }
+
+    
+/**
+ * Subscribes to message ID and registers to activation interface list
+ * 
+ * @param aMessageID the message id to be subscribed
+ * @param aMsgFormat Message format e.g. EMessageHeaderFormatOst
+ */
+TInt DTraceCoreActivationBase::SubscribeMessage(TUint32 aMessageId, TMessageHeaderFormat aMsgFormat)
+    {
+    return Subscribe(aMessageId, aMsgFormat) ;
+    }
+
+
+/**
+ * Registers an activation notification interface
+ * 
+ * @param aNotification the notification interface
+ */
+TInt DTraceCoreActivationBase::RegisterActivationNotification( MTraceCoreActivationNotification& aNotification )
+    {
+    OstTrace1( TRACE_FLOW, DBTRACECOREACTIVATIONBASE_REGISTERACTIVATIONNOTIFICATION_ENTRY, "> DBTraceCoreActivationBase::RegisterActivationNotification 0x%x", ( TUint )&( aNotification ) );
+    
+    TInt retval = iActivationNotification.Append( &aNotification );
+    
+    OstTrace1( TRACE_FLOW, DBTRACECOREACTIVATIONBASE_REGISTERACTIVATIONNOTIFICATION_EXIT, "< DBTraceCoreActivationBase::RegisterActivationNotification Ret:%d", retval );
+    return retval;
+    }
+
+
+/**
+ * Sends notification to TraceCore internal activation notification interfaces.
+ * 
+ * @pre Method should be called with writer lock (iActivationWriteLock) held.
+ * 
+ * @param aFromSettings ETrue if activation was due to settings read, EFalse if from some other source
+ * @param aComponentId Component ID of the activation 
+ */
+void DTraceCoreActivationBase::NotifyInternalActivation( TBool aFromSettings, TUint32 aComponentId )
+    {
+    OstTraceExt2( TRACE_FLOW, DBTRACECOREACTIVATIONBASE_NOTIFYINTERNALACTIVATION_ENTRY, "> DBTraceCoreActivationBase::NotifyInternalActivation. FromSettings:%d, ComponentID:%x", (TUint32)aFromSettings, (TUint32) aComponentId );
+
+    for ( int i = 0; i < iActivationNotification.Count(); i++ )
+        {
+        iActivationNotification[ i ]->ActivationChanged( *this, aFromSettings, aComponentId );
+        }
+    }
+    
+
+/**
+ * Send response
+ * 
+ * @param aMessage Response message
+ */
+void DTraceCoreActivationBase::SendResponse( TTraceMessage& aMessage )
+    {
+    iMessageSender->SendMessage( aMessage );
+    }
+