distributed-simulator-impl.h

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/*
 * 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: George Riley <riley@ece.gatech.edu>
 *
 */
 
#ifndef NS3_DISTRIBUTED_SIMULATOR_IMPL_H
#define NS3_DISTRIBUTED_SIMULATOR_IMPL_H
 
#include "ns3/event-impl.h"
#include "ns3/ptr.h"
#include "ns3/scheduler.h"
#include "ns3/simulator-impl.h"
 
#include <list>
 
namespace ns3
{
 
class LbtsMessage
{
  public:
    LbtsMessage()
        : m_txCount(0),
          m_rxCount(0),
          m_myId(0),
          m_isFinished(false)
    {
    }
 
    LbtsMessage(uint32_t rxc, uint32_t txc, uint32_t id, bool isFinished, const Time& t)
        : m_txCount(txc),
          m_rxCount(rxc),
          m_myId(id),
          m_smallestTime(t),
          m_isFinished(isFinished)
    {
    }
 
    ~LbtsMessage();
 
    Time GetSmallestTime();
    uint32_t GetTxCount() const;
    uint32_t GetRxCount() const;
    uint32_t GetMyId() const;
    bool IsFinished() const;
 
  private:
    uint32_t m_txCount;  
    uint32_t m_rxCount;  
    uint32_t m_myId;     
    Time m_smallestTime; 
    bool m_isFinished;   
};
 
class DistributedSimulatorImpl : public SimulatorImpl
{
  public:
    static TypeId GetTypeId();
 
    DistributedSimulatorImpl();
    ~DistributedSimulatorImpl() override;
 
    // virtual from SimulatorImpl
    void Destroy() override;
    bool IsFinished() const override;
    void Stop() override;
    EventId Stop(const Time& delay) override;
    EventId Schedule(const Time& delay, EventImpl* event) override;
    void ScheduleWithContext(uint32_t context, const Time& delay, EventImpl* event) override;
    EventId ScheduleNow(EventImpl* event) override;
    EventId ScheduleDestroy(EventImpl* event) override;
    void Remove(const EventId& id) override;
    void Cancel(const EventId& id) override;
    bool IsExpired(const EventId& id) const override;
    void Run() override;
    Time Now() const override;
    Time GetDelayLeft(const EventId& id) const override;
    Time GetMaximumSimulationTime() const override;
    void SetScheduler(ObjectFactory schedulerFactory) override;
    uint32_t GetSystemId() const override;
    uint32_t GetContext() const override;
    uint64_t GetEventCount() const override;
 
    virtual void BoundLookAhead(const Time lookAhead);
 
  private:
    // Inherited from Object
    void DoDispose() override;
 
    void CalculateLookAhead();
    bool IsLocalFinished() const;
 
    void ProcessOneEvent();
    uint64_t NextTs() const;
    Time Next() const;
 
    typedef std::list<EventId> DestroyEvents;
 
    DestroyEvents m_destroyEvents;
    bool m_stop;
    bool m_globalFinished;
    Ptr<Scheduler> m_events;
 
    uint32_t m_uid;
    uint32_t m_currentUid;
    uint64_t m_currentTs;
    uint32_t m_currentContext;
    uint64_t m_eventCount;
    int m_unscheduledEvents;
 
    LbtsMessage* m_pLBTS;
    uint32_t m_myId;         
    uint32_t m_systemCount;  
    Time m_grantedTime;      
    static Time m_lookAhead; 
};
 
} // namespace ns3
 
#endif /* NS3_DISTRIBUTED_SIMULATOR_IMPL_H */