author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:22:25 +0200 | |
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// This file implements a queue for the loopback driver |
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// |
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// |
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/** |
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@file |
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*/ |
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#ifndef __LOOPBACK_QUEUE_H__ |
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#define __LOOPBACK_QUEUE_H__ |
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#include <cs_port.h> |
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#include "SLOGGER.H" |
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#include <d32comm.h> |
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#include <c32comm.h> |
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#include <e32hal.h> |
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#include <e32base.h> |
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#include "LoopbackConfig.h" |
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#include "LoopbackTimer.h" |
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/** |
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A queue class of descriptors - all of the data for the desctiptors is contained in this class |
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*/ |
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NONSHARABLE_CLASS(CTPtr8Queue) : CBase |
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{ |
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public: |
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static CTPtr8Queue* NewL(TInt aBufferLength, TInt aQueueLength); |
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~CTPtr8Queue(); |
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TPtr8& GetNewBuffer(); |
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TPtr8& DequeueFirstBuffer(); |
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const TPtr8& PeekFirstBuffer() const; |
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TInt QueueLength() const; |
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TBool IsEmpty() const; |
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TBool IsFull() const; |
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void Clear(); |
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private: |
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CTPtr8Queue(TInt aQueueLength); |
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void ConstructL(TInt aBufferLength, TInt aQueueLength); |
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/** Index of the first buffer in the queue */ |
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TInt iFirstBuffer; |
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/** Index of the next buffer in the queue */ |
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TInt iNextBuffer; |
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/** True if the buffer is full (iFirstBuffer should also equal iNextBuffer */ |
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TBool iQueueFull; |
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/** Pointer to the descriptors, each of which represents an element in the queue */ |
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CArrayFixFlat<TPtr8> iDescriptors; |
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/** Buffer for all of the data in all of the elements of the queue */ |
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TDesC8 *iBuffer; |
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}; |
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/** |
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Contains the read and write queues for a given port |
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*/ |
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NONSHARABLE_CLASS(MLoopbackQueue) |
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{ |
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public: |
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virtual ~MLoopbackQueue(); |
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virtual TPtrC8 PeekNextReadBuffer(TBool& aCompleteIfBufferNotFull) const = 0; |
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virtual void DiscardNextReadBuffer() = 0; |
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virtual void AppendToReadBuffer(TDesC8& aSrcData) = 0; |
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virtual TPtrC8 PeekNextWriteBuffer() const = 0; |
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virtual void DiscardNextWriteBuffer() = 0; |
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virtual TPtr8 AppendToWriteBuffer(TInt aLength) = 0; |
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virtual TBool IsWriteBufferEmpty() const = 0; |
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virtual TBool IsWriteBufferFull(TInt aLength) const = 0; |
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virtual TBool IsReadBufferEmpty() const = 0; |
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virtual TBool IsReadBufferFull(TInt aLength) const = 0; |
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virtual TInt BufferSize() const = 0; |
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virtual void Clear() = 0; |
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}; |
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/** |
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Contains the read and write queues for a given port |
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*/ |
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NONSHARABLE_CLASS(CPacketBufferQueue) : public CBase, public MLoopbackQueue |
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{ |
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public: |
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static CPacketBufferQueue* NewL(TInt aBufferLength, TInt aQueueLength); |
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~CPacketBufferQueue(); |
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void DiscardNextReadBuffer(); |
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TPtrC8 PeekNextReadBuffer(TBool& aCompleteIfBufferNotFull) const; |
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TPtr8 AppendToWriteBuffer(TInt aLength); |
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void DiscardNextWriteBuffer(); |
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TPtrC8 PeekNextWriteBuffer() const; |
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void AppendToReadBuffer(TDesC8& aSrcData); |
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TBool IsWriteBufferEmpty() const; |
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TBool IsWriteBufferFull(TInt aLength) const; |
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TBool IsReadBufferEmpty() const; |
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TBool IsReadBufferFull(TInt aLength) const; |
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TInt BufferSize() const; |
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void Clear(); |
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private: |
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CPacketBufferQueue(TInt aBufferLength); |
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void ConstructL(TInt aBufferLength, TInt aQueueLength); |
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/** The length of each element in each queue */ |
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TInt iBufferLength; |
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/** The read queue for a port */ |
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CTPtr8Queue *iReadQueue; |
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/** The write queue for a port */ |
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CTPtr8Queue *iWriteQueue; |
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}; |
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/** |
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Contains the read and write queues for a given port |
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*/ |
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NONSHARABLE_CLASS(CSerialBufferQueue) : public CBase, public MLoopbackQueue |
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{ |
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public: |
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static CSerialBufferQueue* NewL(TInt aBufferLength, TCommConfigV01* aConfig); |
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~CSerialBufferQueue(); |
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void DiscardNextReadBuffer(); |
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TPtrC8 PeekNextReadBuffer(TBool& aCompleteIfBufferNotFull) const; |
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void AppendToReadBuffer(TDesC8& aSrcData); |
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TPtrC8 PeekNextWriteBuffer() const; |
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void DiscardNextWriteBuffer(); |
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TPtr8 AppendToWriteBuffer(TInt aLength); |
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TBool IsWriteBufferEmpty() const; |
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TBool IsWriteBufferFull(TInt aLength) const; |
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TBool IsReadBufferEmpty() const; |
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TBool IsReadBufferFull(TInt aLength) const; |
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TInt BufferSize() const; |
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void Clear(); |
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private: |
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CSerialBufferQueue(TInt aBufferLength, TCommConfigV01* aConfig); |
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void ConstructL(TInt aBufferLength); |
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TPtrC8 NextBuffer(const TPtrC8& aBuffer, TBool& aTerminatorFound) const; |
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/** The length of each element in each queue */ |
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TInt iBufferLength; |
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TCommConfigV01 *iConfig; |
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HBufC8* iWriteBuffer; |
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TPtr8 iWriteData; |
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HBufC8* iReadBuffer; |
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TPtr8 iReadData; |
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}; |
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#endif |
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