// 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 );

    }