null-message-simulator-impl.h

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/*
 *  Copyright 2013. Lawrence Livermore National Security, LLC.
 *
 * 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: Steven Smith <smith84@llnl.gov>
 */
 
#ifndef NULLMESSAGE_SIMULATOR_IMPL_H
#define NULLMESSAGE_SIMULATOR_IMPL_H
 
#include <ns3/event-impl.h>
#include <ns3/ptr.h>
#include <ns3/scheduler.h>
#include <ns3/simulator-impl.h>
 
#include <fstream>
#include <iostream>
#include <list>
 
namespace ns3
{
 
class NullMessageEvent;
class NullMessageMpiInterface;
class RemoteChannelBundle;
 
class NullMessageSimulatorImpl : public SimulatorImpl
{
  public:
    static TypeId GetTypeId();
 
    NullMessageSimulatorImpl();
 
    ~NullMessageSimulatorImpl() 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;
 
    static NullMessageSimulatorImpl* GetInstance();
 
  private:
    friend class NullMessageEvent;
    friend class NullMessageMpiInterface;
    friend class RemoteChannelBundleManager;
 
    void HandleArrivingMessagesNonBlocking();
 
    void HandleArrivingMessagesBlocking();
 
    void DoDispose() override;
 
    void CalculateLookAhead();
 
    void ProcessOneEvent();
 
    Time Next() const;
 
    void CalculateSafeTime();
 
    Time GetSafeTime();
 
    void ScheduleNullMessageEvent(Ptr<RemoteChannelBundle> bundle);
 
    void RescheduleNullMessageEvent(Ptr<RemoteChannelBundle> bundle);
 
    void RescheduleNullMessageEvent(uint32_t nodeSysId);
 
    Time CalculateGuaranteeTime(uint32_t systemId);
 
    void NullMessageEventHandler(RemoteChannelBundle* bundle);
 
    typedef std::list<EventId> DestroyEvents;
 
    DestroyEvents m_destroyEvents;
    bool m_stop;
    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;
 
    uint32_t m_myId;        
    uint32_t m_systemCount; 
    Time m_safeTime;
 
    double m_schedulerTune;
 
    static NullMessageSimulatorImpl* g_instance;
};
 
} // namespace ns3
 
#endif /* NULLMESSAGE_SIMULATOR_IMPL_H */