wifi-mac-queue-container.h

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/*
 * Copyright (c) 2022 Universita' degli Studi di Napoli Federico II
 *
 * 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: Stefano Avallone <stavallo@unina.it>
 */
 
#ifndef WIFI_MAC_QUEUE_CONTAINER_H
#define WIFI_MAC_QUEUE_CONTAINER_H
 
#include "wifi-mac-queue-elem.h"
 
#include "ns3/mac48-address.h"
 
#include <list>
#include <tuple>
#include <unordered_map>
 
namespace ns3
{
 
enum WifiContainerQueueType
{
    WIFI_MGT_QUEUE = 0,
    WIFI_QOSDATA_UNICAST_QUEUE = 1,
    WIFI_QOSDATA_BROADCAST_QUEUE = 2,
    WIFI_DATA_QUEUE = 3
};
 
using WifiContainerQueueId = std::tuple<WifiContainerQueueType, Mac48Address, uint8_t>;
 
} // namespace ns3
 
/****************************************************
 *      Global Functions (outside namespace ns3)
 ***************************************************/
 
template <>
struct std::hash<ns3::WifiContainerQueueId>
{
    std::size_t operator()(ns3::WifiContainerQueueId queueId) const;
};
 
namespace ns3
{
 
class WifiMacQueueContainer
{
  public:
    using ContainerQueue = std::list<WifiMacQueueElem>;
    using iterator = ContainerQueue::iterator;
    using const_iterator = ContainerQueue::const_iterator;
 
    void clear();
 
    iterator insert(const_iterator pos, Ptr<WifiMpdu> item);
 
    iterator erase(const_iterator pos);
 
    Ptr<WifiMpdu> GetItem(const const_iterator it) const;
 
    static WifiContainerQueueId GetQueueId(Ptr<const WifiMpdu> mpdu);
 
    const ContainerQueue& GetQueue(const WifiContainerQueueId& queueId) const;
 
    uint32_t GetNBytes(const WifiContainerQueueId& queueId) const;
 
    std::pair<iterator, iterator> ExtractExpiredMpdus(const WifiContainerQueueId& queueId) const;
    std::pair<iterator, iterator> ExtractAllExpiredMpdus() const;
    std::pair<iterator, iterator> GetAllExpiredMpdus() const;
 
  private:
    std::pair<iterator, iterator> DoExtractExpiredMpdus(ContainerQueue& queue) const;
 
    mutable std::unordered_map<WifiContainerQueueId, ContainerQueue>
        m_queues;                          
    mutable ContainerQueue m_expiredQueue; 
    mutable std::unordered_map<WifiContainerQueueId, uint32_t>
        m_nBytesPerQueue; 
};
 
} // namespace ns3
 
#endif /* WIFI_MAC_QUEUE_CONTAINER_H */