--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dbgagents/trkagent/dbgtrccomm/server/portreader.cpp	Tue Mar 02 10:33:16 2010 +0530
@@ -0,0 +1,105 @@
+/*
+* Copyright (c) 2009 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: 
+*
+*/
+
+#include <e32cons.h>
+#include <e32base.h>
+
+#include "logging.h"
+#include "portreader.h"
+
+
+
+CPortReader* CPortReader::NewL(RComm& aPort)
+{
+	LOG_MSG("CPortReader::NewL");
+
+	CPortReader* self = new(ELeave) CPortReader(aPort);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+}
+
+CPortReader::CPortReader(RComm& aPort) 
+: CActive(CActive::EPriorityStandard),
+  iPort(aPort),
+  iAlreadyReading(EFalse)
+{
+	LOG_MSG("CPortReader::CPortReader");
+
+}
+
+CPortReader::~CPortReader()
+{
+	LOG_MSG("CPortReader::~CPortReader");
+
+	Cancel();
+
+}
+
+void CPortReader::ConstructL()
+{
+	LOG_MSG("CPortReader::ConstructL");
+	
+	CActiveScheduler::Add(this);
+}
+
+void CPortReader::StartRead(MDataListener* aListener)
+{
+	LOG_MSG("CPortReader::StartRead");
+
+	if (iAlreadyReading)
+		return;
+	
+	iListener = aListener;
+	
+	IssueReadRequest();
+	iAlreadyReading = ETrue;
+}
+
+void CPortReader::IssueReadRequest()
+{
+	LOG_MSG("CPortReader::IssueReadRequest");
+
+	iNextReadChar = 0;
+	iReceivedChars.Zero();
+	iPort.ReadOneOrMore(iStatus, iReceivedChars);
+
+	SetActive();
+}
+
+void CPortReader::RunL()
+{
+	LOG_MSG("CPortReader::RunL");
+
+	// pass the data onto listener
+	if (iStatus.Int() == KErrNone && iListener)		
+		iListener->DataAvailable(iReceivedChars, iReceivedChars.Length());
+
+	// continue waiting for data
+	IssueReadRequest();	
+}
+
+void CPortReader::DoCancel()
+{	
+	LOG_MSG("CPortReader::DoCancel");
+
+	iPort.ReadCancel();
+	
+	iAlreadyReading = EFalse;
+}
+