aodv-id-cache.h

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/*
 * Copyright (c) 2009 IITP RAS
 *
 * 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
 *
 * Based on
 *      NS-2 AODV model developed by the CMU/MONARCH group and optimized and
 *      tuned by Samir Das and Mahesh Marina, University of Cincinnati;
 *
 *      AODV-UU implementation by Erik Nordström of Uppsala University
 *      https://web.archive.org/web/20100527072022/http://core.it.uu.se/core/index.php/AODV-UU
 *
 * Authors: Elena Buchatskaia <borovkovaes@iitp.ru>
 *          Pavel Boyko <boyko@iitp.ru>
 */
 
#ifndef AODV_ID_CACHE_H
#define AODV_ID_CACHE_H
 
#include "ns3/ipv4-address.h"
#include "ns3/simulator.h"
 
#include <vector>
 
namespace ns3
{
namespace aodv
{
class IdCache
{
  public:
    IdCache(Time lifetime)
        : m_lifetime(lifetime)
    {
    }
 
    bool IsDuplicate(Ipv4Address addr, uint32_t id);
    void Purge();
    uint32_t GetSize();
 
    void SetLifetime(Time lifetime)
    {
        m_lifetime = lifetime;
    }
 
    Time GetLifeTime() const
    {
        return m_lifetime;
    }
 
  private:
    struct UniqueId
    {
        Ipv4Address m_context;
        uint32_t m_id;
        Time m_expire;
    };
 
    struct IsExpired
    {
        bool operator()(const UniqueId& u) const
        {
            return (u.m_expire < Simulator::Now());
        }
    };
 
    std::vector<UniqueId> m_idCache;
    Time m_lifetime;
};
 
} // namespace aodv
} // namespace ns3
 
#endif /* AODV_ID_CACHE_H */