1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/epoc32/include/sbque.h	Tue Mar 16 16:12:26 2010 +0000
     1.3 @@ -0,0 +1,79 @@
     1.4 +// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// sbque.h - TCP sequence block queue
    1.18 +// Defines a queue for keeping tabs on contiguous blocks of sequence numbers.
    1.19 +//
    1.20 +
    1.21 +
    1.22 +
    1.23 +/**
    1.24 + @file sbque.h
    1.25 + @publishedAll
    1.26 + @released
    1.27 +*/
    1.28 +
    1.29 +#ifndef __SBQUE_H__
    1.30 +#define __SBQUE_H__
    1.31 +
    1.32 +#include "tcpseq.h"
    1.33 +
    1.34 +/** Sequence Block.
    1.35 +@publishedAll
    1.36 +@released
    1.37 +*/
    1.38 +class SequenceBlock
    1.39 +	{
    1.40 +  	friend class SequenceBlockQueue;
    1.41 +
    1.42 +private:
    1.43 +
    1.44 +    SequenceBlock(TTcpSeqNum aLeft, TTcpSeqNum aRight) : iLeft(aLeft), iRight(aRight) {}
    1.45 +    TDblQueLink iLink;
    1.46 +
    1.47 +public:
    1.48 +
    1.49 +    TTcpSeqNum  iLeft;
    1.50 +    TTcpSeqNum  iRight;
    1.51 +	};
    1.52 +
    1.53 +/** Sequence Block Queue.
    1.54 +@publishedAll
    1.55 +@released
    1.56 +*/
    1.57 +class SequenceBlockQueue : public TDblQue<SequenceBlock>
    1.58 +	{
    1.59 + public:
    1.60 +    SequenceBlockQueue() : TDblQue<SequenceBlock>(_FOFF(SequenceBlock, iLink)) { iCount = 0; iOrdered = ETrue; }
    1.61 +    inline ~SequenceBlockQueue() { Clear(); }
    1.62 +    IMPORT_C SequenceBlock *AddOrdered(TTcpSeqNum aLeft, TTcpSeqNum aRight);
    1.63 +    IMPORT_C SequenceBlock *AddUnordered(TTcpSeqNum aLeft, TTcpSeqNum aRight);
    1.64 +    inline SequenceBlock *AddOrdered(const SequenceBlock *aBlock) { return AddOrdered(aBlock->iLeft, aBlock->iRight); }
    1.65 +    inline SequenceBlock *AddUnordered(const SequenceBlock *aBlock) { return AddUnordered(aBlock->iLeft, aBlock->iRight); }
    1.66 +    IMPORT_C SequenceBlock *Find(TTcpSeqNum aSeq);
    1.67 +    IMPORT_C TInt FindGap(TTcpSeqNum& aLeft, TTcpSeqNum& aRight);
    1.68 +    IMPORT_C void Prune(TTcpSeqNum aLeft);
    1.69 +    IMPORT_C void Limit(TInt aCount);
    1.70 +    IMPORT_C void Clear();
    1.71 +    inline TInt Count() const { return iCount; }
    1.72 +    inline TInt ByteCount() const { return iBytes; }
    1.73 +
    1.74 +private:
    1.75 +    TInt iCount;
    1.76 +    TInt iBytes;
    1.77 +    TBool iOrdered;
    1.78 +	};
    1.79 +
    1.80 +typedef TDblQueIter<SequenceBlock> SequenceBlockQueueIter;
    1.81 +
    1.82 +#endif