74 lines
3.1 KiB
C++
74 lines
3.1 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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//
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// Copyright (c) 2006 Georgia Tech Research Corporation
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// All rights reserved.
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation;
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Author: Rajib Bhattacharjea<raj.b@gatech.edu>
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//
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// Georgia Tech Network Simulator - Data Descriptors
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// George F. Riley. Georgia Tech, Spring 2002
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#ifndef __datapdu_h__
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#define __datapdu_h__
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#include "pending-data.h"
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#include "sequence-number.h"
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namespace ns3
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{
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class Packet;
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//Doc:ClassXRef
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class PendingData {
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public:
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PendingData ();
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PendingData (uint32_t s, uint8_t* d = NULL, uint32_t msg = 0, uint32_t resp = 0);
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PendingData (const std::string&); // Construct from string
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PendingData (uint8_t*, uint32_t&, Packet*); // Construct from serialized buffer
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PendingData (const PendingData&); // Copy constructor
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virtual ~PendingData (); // Destructor
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uint32_t Size () const { return size;}
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// Serialization
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uint32_t SSize (); // Size needed for serialization
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uint8_t* Serialize (uint8_t*, uint32_t&); // Serialize to a buffer
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uint8_t* Construct (uint8_t*, uint32_t&); // Construct from buffer
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virtual void Clear ();// Remove all associated data
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virtual void Add (uint32_t s, const uint8_t* d = 0);// Add some data to end
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virtual void Remove (uint32_t); // Remove data from head
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// Inquire available data from (f,o) sequence pair
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virtual uint32_t SizeFromSeq (const SequenceNumber&, const SequenceNumber&);
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// Inquire available data from offset
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virtual uint32_t SizeFromOffset (uint32_t);
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// Available size from sequence difference
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virtual uint32_t OffsetFromSeq (const SequenceNumber&, const SequenceNumber&);
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virtual PendingData* CopyFromOffset (uint32_t, uint32_t); // Size, offset, ret pointer
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// Copy data, size, offset specified by sequence difference
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virtual PendingData* CopyFromSeq (uint32_t, const SequenceNumber&, const SequenceNumber&);
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PendingData* Copy () const; // Create a copy of this header
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PendingData* CopyS (uint32_t); // Copy with new size
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PendingData* CopySD (uint32_t, uint8_t*); // Copy with new size, new data
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virtual uint8_t* Contents() const { return data;}
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public:
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uint32_t size; // Number of data bytes
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uint8_t* data; // Corresponding data (may be null)
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// The next two fields allow simulated applications to exchange some info
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uint32_t msgSize; // Total size of message
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uint32_t responseSize;// Size of response requested
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};
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}//namepsace ns3
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#endif
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