usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/src/ActiveReader.cpp
/*
* Copyright (c) 1997-2010 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:
*
*/
#include <e32std.h>
#include "ActiveReader.h"
#include "AcmConstants.h"
#include "AcmPanic.h"
#include "ReadObserver.h"
#include "AcmUtils.h"
#include "OstTraceDefinitions.h"
#ifdef OST_TRACE_COMPILER_IN_USE
#include "ActiveReaderTraces.h"
#endif
CActiveReader::CActiveReader(MReadObserver& aParent, RDevUsbcClient& aLdd, TEndpointNumber aEndpoint)
: CActive(KEcacmAOPriority),
iParent(aParent),
iLdd(aLdd),
iEndpoint(aEndpoint)
/**
* Constructor.
*
* @param aParent The object that will be notified when read requests
* complete.
* @param aLdd The LDD handle to be used for posting read requests.
* @param aEndpoint The endpoint to read from.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_CACTIVEREADER_CONS_ENTRY );
CActiveScheduler::Add(this);
OstTraceFunctionExit0( CACTIVEREADER_CACTIVEREADER_CONS_EXIT );
}
CActiveReader::~CActiveReader()
/**
* Destructor.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_CACTIVEREADER_DES_ENTRY );
Cancel();
OstTraceFunctionExit0( CACTIVEREADER_CACTIVEREADER_DES_EXIT );
}
CActiveReader* CActiveReader::NewL(MReadObserver& aParent,
RDevUsbcClient& aLdd,
TEndpointNumber aEndpoint)
/**
* Standard two phase constructor.
*
* @param aParent The object that will be notified when read requests
* complete.
* @param aLdd The LDD handle to be used for posting read requests.
* @param aEndpoint The endpoint to read from.
* @return Ownership of a new CActiveReader object.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_NEWL_ENTRY );
CActiveReader* self = new(ELeave) CActiveReader(aParent, aLdd, aEndpoint);
OstTraceFunctionExit0( CACTIVEREADER_NEWL_EXIT );
return self;
}
void CActiveReader::Read(TDes8& aDes, TInt aLen)
/**
* Read the given length of data from the LDD.
*
* @param aDes A descriptor into which to read.
* @param aLen The length to read.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_READ_ENTRY );
iLdd.Read(iStatus, iEndpoint, aDes, aLen);
SetActive();
OstTraceFunctionExit0( CACTIVEREADER_READ_EXIT );
}
void CActiveReader::DoCancel()
/**
* Cancel an outstanding read.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_DOCANCEL_ENTRY );
iLdd.ReadCancel(iEndpoint);
OstTraceFunctionExit0( CACTIVEREADER_DOCANCEL_EXIT );
}
void CActiveReader::RunL()
/**
* This function will be called when the read completes. It notifies the
* parent class of the completion.
*/
{
OstTraceFunctionEntry0( CACTIVEREADER_RUNL_ENTRY );
OstTrace1( TRACE_NORMAL, CACTIVEREADER_RUNL, "CActiveReader::RunL;RunL iStatus=%d", iStatus.Int() );
iParent.ReadCompleted(iStatus.Int());
OstTraceFunctionExit0( CACTIVEREADER_RUNL_EXIT );
}
//
// End of file