backoff.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007 Emmanuelle Laprise
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Emmanuelle Laprise <emmanuelle.laprise@bluekazoo.ca
 * Derived from the p2p net device file
Transmi */

#ifndef BACKOFF_H
#define BACKOFF_H

#include <stdint.h>
#include "ns3/nstime.h"
#include "ns3/random-variable-stream.h"

namespace ns3 {

class Backoff {
public:
  uint32_t m_minSlots; 

  uint32_t m_maxSlots; 

  uint32_t m_ceiling;

  uint32_t m_maxRetries;

  Time m_slotTime;

  Backoff (void);
  Backoff (Time slotTime, uint32_t minSlots, uint32_t maxSlots, uint32_t ceiling, uint32_t maxRetries);

  Time GetBackoffTime ();

  void ResetBackoffTime (void);

  bool MaxRetriesReached (void);

  void IncrNumRetries (void);

  int64_t AssignStreams (int64_t stream);

private:

  uint32_t m_numBackoffRetries;
  Ptr<UniformRandomVariable> m_rng;
};

} // namespace ns3

#endif /* BACKOFF_H */