Simulator implementation using MPI and a Null Message algorithm. More...

#include <null-message-simulator-impl.h>

Inheritance diagram for ns3::NullMessageSimulatorImpl:

Collaboration diagram for ns3::NullMessageSimulatorImpl:

Public Member Functions
	NullMessageSimulatorImpl ()

	~NullMessageSimulatorImpl ()

virtual void	Cancel (const EventId &ev)
	Set the cancel bit on this event: the event's associated function will not be invoked when it expires. More...

virtual void	Destroy ()
	This method is typically invoked at the end of a simulation to avoid false-positive reports by a leak checker. More...

virtual uint32_t	GetContext (void) const

virtual Time	GetDelayLeft (const EventId &id) const

virtual Time	GetMaximumSimulationTime (void) const

virtual uint32_t	GetSystemId (void) const

virtual bool	IsExpired (const EventId &ev) const
	This method has O(1) complexity. More...

virtual bool	IsFinished (void) const
	If there are no more events lefts to be scheduled, or if simulation time has already reached the "stop time" (see Simulator::Stop()), return true. More...

virtual Time	Now (void) const
	Return the "current simulation time". More...

virtual void	Remove (const EventId &ev)
	Remove an event from the event list. More...

virtual void	Run (void)
	Run the simulation until one of: More...

virtual void	RunOneEvent (void)

virtual EventId	Schedule (Time const &time, EventImpl *event)

virtual EventId	ScheduleDestroy (EventImpl *event)

virtual EventId	ScheduleNow (EventImpl *event)

virtual void	ScheduleWithContext (uint32_t context, Time const &time, EventImpl *event)

virtual void	SetScheduler (ObjectFactory schedulerFactory)

virtual void	Stop (void)
	If an event invokes this method, it will be the last event scheduled by the Simulator::Run method before returning to the caller. More...

virtual void	Stop (Time const &time)
	Force the Simulator::Run method to return to the caller when the expiration time of the next event to be processed is greater than or equal to the stop time. More...

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)
	Run the DoDispose methods of this object and all the objects aggregated to it. More...

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)
	This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static NullMessageSimulatorImpl *	GetInstance (void)

static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::SimulatorImpl
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Private Types
typedef std::list< EventId >	DestroyEvents

Private Member Functions
Time	CalculateGuaranteeTime (uint32_t systemId)

void	CalculateLookAhead (void)
	Calculate the look ahead allowable for this MPI task. More...

void	CalculateSafeTime (void)
	Calculate the SafeTime. More...

virtual void	DoDispose (void)
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

Time	GetSafeTime (void)
	Get the current SafeTime; the maximum time that events can be processed based on information received from neighboring MPI tasks. More...

void	HandleArrivingMessagesBlocking (void)
	Blocking receive of arriving messages. More...

void	HandleArrivingMessagesNonBlocking (void)
	Non blocking receive of pending messages. More...

Time	Next (void) const

void	NullMessageEventHandler (RemoteChannelBundle *bundle)

void	ProcessOneEvent (void)
	Process the next event on the queue. More...

void	RescheduleNullMessageEvent (Ptr< RemoteChannelBundle > bundle)

void	RescheduleNullMessageEvent (uint32_t nodeSysId)

void	ScheduleNullMessageEvent (Ptr< RemoteChannelBundle > bundle)

Private Attributes
uint32_t	m_currentContext

uint64_t	m_currentTs

uint32_t	m_currentUid

DestroyEvents	m_destroyEvents

Ptr< Scheduler >	m_events

uint32_t	m_myId

Time	m_safeTime

double	m_schedulerTune

bool	m_stop

uint32_t	m_systemCount

uint32_t	m_uid

int	m_unscheduledEvents

Static Private Attributes
static NullMessageSimulatorImpl *	g_instance = 0

Friends
class	NullMessageEvent

class	NullMessageMpiInterface

class	RemoteChannelBundleManager

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

virtual void	NotifyNewAggregate (void)
	This method is invoked whenever two sets of objects are aggregated together. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)
	This method is invoked once all member attributes have been initialized. More...

Detailed Description

Simulator implementation using MPI and a Null Message algorithm.

Doxygen introspection did not find any typical Config paths.

Attributes

SchedulerTune: Null Message scheduler tuning parameter
- Set with class: ns3::DoubleValue
- Underlying type: double 0.01:1
- Initial value: 1
- Flags: construct write read

No TraceSources are defined for this type.

Definition at line 45 of file null-message-simulator-impl.h.

Member Typedef Documentation

typedef std::list<EventId> ns3::NullMessageSimulatorImpl::DestroyEvents

private

Definition at line 170 of file null-message-simulator-impl.h.

Constructor & Destructor Documentation

ns3::NullMessageSimulatorImpl::NullMessageSimulatorImpl ( )

Definition at line 67 of file null-message-simulator-impl.cc.

References g_instance, ns3::MpiInterface::GetSize(), ns3::MpiInterface::GetSystemId(), m_currentContext, m_currentTs, m_currentUid, m_events, m_myId, m_safeTime, m_stop, m_systemCount, m_uid, m_unscheduledEvents, NS_ASSERT, NS_FATAL_ERROR, and NS_LOG_FUNCTION.

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ns3::NullMessageSimulatorImpl::~NullMessageSimulatorImpl ( )

Definition at line 98 of file null-message-simulator-impl.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

Time ns3::NullMessageSimulatorImpl::CalculateGuaranteeTime ( uint32_t systemId )

private

Parameters

systemId SystemID to compute guarentee time for

Returns: Guarentee time

Calculate the guarantee time for incoming RemoteChannelBundel from task nodeSysId. No message should arrive from task nodeSysId with a receive time less than the guarantee time.

Definition at line 577 of file null-message-simulator-impl.cc.

References ns3::RemoteChannelBundleManager::Find(), GetInstance(), GetSafeTime(), ns3::Min(), Next(), and NS_ASSERT.

Referenced by ns3::NullMessageMpiInterface::SendPacket().

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void ns3::NullMessageSimulatorImpl::CalculateLookAhead ( void )

private

Calculate the look ahead allowable for this MPI task.

Basically the minimum latency on links to neighbor MPI tasks.

Add this channel to the remote channel bundle from this task to MPI task on other side of the channel.

Definition at line 138 of file null-message-simulator-impl.cc.

References ns3::RemoteChannelBundleManager::Add(), ns3::NodeContainer::Begin(), ns3::NodeContainer::End(), ns3::RemoteChannelBundleManager::Find(), ns3::TimeValue::Get(), ns3::NodeContainer::GetGlobal(), ns3::MpiInterface::GetSize(), ns3::MpiInterface::GetSystemId(), ns3::Node::GetSystemId(), ns3::NullMessageMpiInterface::InitializeSendReceiveBuffers(), m_safeTime, and NS_LOG_FUNCTION.

Referenced by Run().

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void ns3::NullMessageSimulatorImpl::CalculateSafeTime ( void )

private

Calculate the SafeTime.

Should be called after message receives.

Definition at line 353 of file null-message-simulator-impl.cc.

References ns3::RemoteChannelBundleManager::GetSafeTime(), m_currentTs, m_safeTime, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by HandleArrivingMessagesBlocking(), and HandleArrivingMessagesNonBlocking().

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void ns3::NullMessageSimulatorImpl::Cancel ( const EventId & ev )

virtual

Set the cancel bit on this event: the event's associated function will not be invoked when it expires.

This method has the same visible effect as the ns3::Simulator::Remove method but its algorithmic complexity is much lower: it has O(1) complexity. This method has the exact same semantics as ns3::EventId::Cancel. Note that it is not possible to cancel events which were scheduled for the "destroy" time. Doing so will result in a program error (crash).

Parameters

ev	the event to cancel

Implements ns3::SimulatorImpl.

Definition at line 521 of file null-message-simulator-impl.cc.

References IsExpired().

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void ns3::NullMessageSimulatorImpl::Destroy ( )

virtual

This method is typically invoked at the end of a simulation to avoid false-positive reports by a leak checker.

After this method has been invoked, it is actually possible to restart a new simulation with a set of calls to Simulator::Run, Simulator::Schedule and Simulator::ScheduleWithContext.

Implements ns3::SimulatorImpl.

Definition at line 118 of file null-message-simulator-impl.cc.

References ns3::MpiInterface::Destroy(), ns3::RemoteChannelBundleManager::Destroy(), m_destroyEvents, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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void ns3::NullMessageSimulatorImpl::DoDispose ( void )

privatevirtual

This method is called by Object::Dispose or by the object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e., for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose method.

It is safe to call GetObject from within this method.

Reimplemented from ns3::Object.

Definition at line 104 of file null-message-simulator-impl.cc.

References ns3::Object::DoDispose(), ns3::Scheduler::Event::impl, m_events, NS_LOG_FUNCTION, and ns3::SimpleRefCount< T, PARENT, DELETER >::Unref().

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uint32_t ns3::NullMessageSimulatorImpl::GetContext ( void ) const

virtual

Returns: the current simulation context

Implements ns3::SimulatorImpl.

Definition at line 572 of file null-message-simulator-impl.cc.

References m_currentContext.

Referenced by Schedule(), and ScheduleNow().

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Time ns3::NullMessageSimulatorImpl::GetDelayLeft ( const EventId & id ) const

virtual

Parameters

id	the event id to analyse

Returns: the delay left until the input event id expires. if the event is not running, this method returns zero.

Implements ns3::SimulatorImpl.

Definition at line 475 of file null-message-simulator-impl.cc.

References IsExpired(), m_currentTs, and ns3::TimeStep().

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NullMessageSimulatorImpl * ns3::NullMessageSimulatorImpl::GetInstance ( void )

static

Returns: singleton instance

Singleton accessor.

Definition at line 597 of file null-message-simulator-impl.cc.

References g_instance, and NS_ASSERT.

Referenced by CalculateGuaranteeTime(), ns3::RemoteChannelBundleManager::InitializeNullMessageEvents(), and ns3::NullMessageMpiInterface::SendPacket().

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Time ns3::NullMessageSimulatorImpl::GetMaximumSimulationTime ( void ) const

virtual

Returns: the maximum simulation time at which an event can be scheduled.

The returned value will always be bigger than or equal to Simulator::Now.

Implements ns3::SimulatorImpl.

Definition at line 564 of file null-message-simulator-impl.cc.

References ns3::TimeStep().

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Time ns3::NullMessageSimulatorImpl::GetSafeTime ( void )

private

Get the current SafeTime; the maximum time that events can be processed based on information received from neighboring MPI tasks.

Definition at line 362 of file null-message-simulator-impl.cc.

References m_safeTime.

Referenced by CalculateGuaranteeTime(), NullMessageEventHandler(), and Run().

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uint32_t ns3::NullMessageSimulatorImpl::GetSystemId ( void ) const

virtual

Returns: the system id for this simulator; used for MPI or other distributed simulations

Implements ns3::SimulatorImpl.

Definition at line 369 of file null-message-simulator-impl.cc.

References m_myId.

TypeId ns3::NullMessageSimulatorImpl::GetTypeId ( void )

static

Definition at line 54 of file null-message-simulator-impl.cc.

References m_schedulerTune, and ns3::TypeId::SetParent().

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void ns3::NullMessageSimulatorImpl::HandleArrivingMessagesBlocking ( void )

private

Blocking receive of arriving messages.

Definition at line 340 of file null-message-simulator-impl.cc.

References CalculateSafeTime(), NS_LOG_FUNCTION, ns3::NullMessageMpiInterface::ReceiveMessagesBlocking(), and ns3::NullMessageMpiInterface::TestSendComplete().

Referenced by Run().

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void ns3::NullMessageSimulatorImpl::HandleArrivingMessagesNonBlocking ( void )

private

Non blocking receive of pending messages.

Definition at line 327 of file null-message-simulator-impl.cc.

References CalculateSafeTime(), NS_LOG_FUNCTION, ns3::NullMessageMpiInterface::ReceiveMessagesNonBlocking(), and ns3::NullMessageMpiInterface::TestSendComplete().

Referenced by Run().

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bool ns3::NullMessageSimulatorImpl::IsExpired ( const EventId & ev ) const

virtual

This method has O(1) complexity.

Note that it is not possible to test for the expiration of events which were scheduled for the "destroy" time. Doing so will result in a program error (crash). An event is said to "expire" when it starts being scheduled which means that if the code executed by the event calls this function, it will get true.

Parameters

ev	the event to test for expiration

Returns: true if the event has expired, false otherwise.

Implements ns3::SimulatorImpl.

Definition at line 530 of file null-message-simulator-impl.cc.

References ns3::EventId::GetTs(), ns3::EventId::GetUid(), ns3::EventImpl::IsCancelled(), m_currentTs, m_currentUid, m_destroyEvents, and ns3::EventId::PeekEventImpl().

Referenced by Cancel(), GetDelayLeft(), and Remove().

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bool ns3::NullMessageSimulatorImpl::IsFinished ( void ) const

virtual

If there are no more events lefts to be scheduled, or if simulation time has already reached the "stop time" (see Simulator::Stop()), return true.

Return false otherwise.

Implements ns3::SimulatorImpl.

Definition at line 247 of file null-message-simulator-impl.cc.

References m_events, and m_stop.

Referenced by Run().

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Time ns3::NullMessageSimulatorImpl::Next ( void ) const

private

Returns: next local event time.

Definition at line 253 of file null-message-simulator-impl.cc.

References m_events, NS_ASSERT, NS_LOG_FUNCTION, and ns3::TimeStep().

Referenced by CalculateGuaranteeTime(), NullMessageEventHandler(), and Run().

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Time ns3::NullMessageSimulatorImpl::Now ( void ) const

virtual

Return the "current simulation time".

Implements ns3::SimulatorImpl.

Definition at line 469 of file null-message-simulator-impl.cc.

References m_currentTs, and ns3::TimeStep().

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void ns3::NullMessageSimulatorImpl::NullMessageEventHandler ( RemoteChannelBundle * bundle )

private

Parameters

bundle remote channel bundle to schedule an event for.

Null message event handler. Scheduled to send a null message for the specified bundle at regular intervals. Will canceled and rescheduled when packets are sent.

Definition at line 585 of file null-message-simulator-impl.cc.

References ns3::RemoteChannelBundle::GetDelay(), GetSafeTime(), ns3::Min(), Next(), NS_LOG_FUNCTION, ScheduleNullMessageEvent(), and ns3::NullMessageMpiInterface::SendNullMessage().

Referenced by RescheduleNullMessageEvent(), and ScheduleNullMessageEvent().

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void ns3::NullMessageSimulatorImpl::ProcessOneEvent ( void )

private

Process the next event on the queue.

Definition at line 229 of file null-message-simulator-impl.cc.

References ns3::Scheduler::Event::impl, ns3::EventImpl::Invoke(), ns3::Scheduler::Event::key, ns3::Scheduler::EventKey::m_context, m_currentContext, m_currentTs, m_currentUid, m_events, ns3::Scheduler::EventKey::m_ts, ns3::Scheduler::EventKey::m_uid, m_unscheduledEvents, NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_LOGIC, and ns3::SimpleRefCount< T, PARENT, DELETER >::Unref().

Referenced by Run(), and RunOneEvent().

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void ns3::NullMessageSimulatorImpl::Remove ( const EventId & ev )

virtual

Remove an event from the event list.

This method has the same visible effect as the ns3::EventId::Cancel method but its algorithmic complexity is much higher: it has often O(log(n)) complexity, sometimes O(n), sometimes worse. Note that it is not possible to remove events which were scheduled for the "destroy" time. Doing so will result in a program error (crash).

Parameters

ev	the event to remove from the list of scheduled events.

Implements ns3::SimulatorImpl.

Definition at line 488 of file null-message-simulator-impl.cc.

References ns3::Scheduler::Event::impl, IsExpired(), m_destroyEvents, m_events, and m_unscheduledEvents.

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void ns3::NullMessageSimulatorImpl::RescheduleNullMessageEvent ( Ptr< RemoteChannelBundle > bundle )

private

Parameters

bundle Bundle to reschedule Null Message event for

Reschedule Null Message event for the specified RemoteChannelBundel. Existing event will be canceled.

Definition at line 275 of file null-message-simulator-impl.cc.

References ns3::Simulator::Cancel(), m_schedulerTune, NS_LOG_FUNCTION, NullMessageEventHandler(), ns3::PeekPointer(), and ns3::Simulator::Schedule().

Referenced by RescheduleNullMessageEvent(), and ns3::NullMessageMpiInterface::SendPacket().

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void ns3::NullMessageSimulatorImpl::RescheduleNullMessageEvent ( uint32_t nodeSysId )

private

Parameters

nodeSysId SystemID to reschedule null event for

Reschedule Null Message event for the RemoteChannelBundel to the task nodeSysId. Existing event will be canceled.

Definition at line 288 of file null-message-simulator-impl.cc.

References ns3::RemoteChannelBundleManager::Find(), NS_ASSERT, NS_LOG_FUNCTION, and RescheduleNullMessageEvent().

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void ns3::NullMessageSimulatorImpl::Run ( void )

virtual

Run the simulation until one of:

no events are present anymore
the user called Simulator::Stop
the user called Simulator::Stop with stop time and the expiration time of the next event to be processed is greater than or equal to the stop time.

Implements ns3::SimulatorImpl.

Definition at line 299 of file null-message-simulator-impl.cc.

References CalculateLookAhead(), GetSafeTime(), HandleArrivingMessagesBlocking(), HandleArrivingMessagesNonBlocking(), ns3::RemoteChannelBundleManager::InitializeNullMessageEvents(), IsFinished(), m_stop, Next(), NS_LOG_FUNCTION, and ProcessOneEvent().

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void ns3::NullMessageSimulatorImpl::RunOneEvent ( void )

virtual

Definition at line 375 of file null-message-simulator-impl.cc.

References NS_LOG_FUNCTION, and ProcessOneEvent().

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EventId ns3::NullMessageSimulatorImpl::Schedule	(	Time const &	time,
		EventImpl *	event
	)

virtual

Parameters

time	delay until the event expires
event	the event to schedule

Returns: a unique identifier for the newly-scheduled event.

This method will be typically used by language bindings to delegate events to their own subclass of the EventImpl base class.

Implements ns3::SimulatorImpl.

Definition at line 402 of file null-message-simulator-impl.cc.

References GetContext(), ns3::Time::GetTimeStep(), ns3::Scheduler::Event::impl, ns3::Scheduler::Event::key, ns3::Scheduler::EventKey::m_context, m_currentTs, m_events, ns3::Scheduler::EventKey::m_ts, ns3::Scheduler::EventKey::m_uid, m_uid, m_unscheduledEvents, NS_ASSERT, NS_LOG_FUNCTION, and ns3::TimeStep().

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EventId ns3::NullMessageSimulatorImpl::ScheduleDestroy ( EventImpl * event )

virtual

Parameters

event the event to schedule

Returns: a unique identifier for the newly-scheduled event.

This method will be typically used by language bindings to delegate events to their own subclass of the EventImpl base class.

Implements ns3::SimulatorImpl.

Definition at line 458 of file null-message-simulator-impl.cc.

References m_currentTs, m_destroyEvents, m_uid, and NS_LOG_FUNCTION.

EventId ns3::NullMessageSimulatorImpl::ScheduleNow ( EventImpl * event )

virtual

Parameters

event the event to schedule

Returns: a unique identifier for the newly-scheduled event.

This method will be typically used by language bindings to delegate events to their own subclass of the EventImpl base class.

Implements ns3::SimulatorImpl.

Definition at line 442 of file null-message-simulator-impl.cc.

References GetContext(), ns3::Scheduler::Event::impl, ns3::Scheduler::Event::key, ns3::Scheduler::EventKey::m_context, m_currentTs, m_events, ns3::Scheduler::EventKey::m_ts, ns3::Scheduler::EventKey::m_uid, m_uid, m_unscheduledEvents, and NS_LOG_FUNCTION.

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void ns3::NullMessageSimulatorImpl::ScheduleNullMessageEvent ( Ptr< RemoteChannelBundle > bundle )

private

Parameters

bundle Bundle to schedule Null Message event for

Schedule Null Message event for the specified RemoteChannelBundle.

Definition at line 264 of file null-message-simulator-impl.cc.

References m_schedulerTune, NS_LOG_FUNCTION, NullMessageEventHandler(), ns3::PeekPointer(), and ns3::Simulator::Schedule().

Referenced by ns3::RemoteChannelBundleManager::InitializeNullMessageEvents(), and NullMessageEventHandler().

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void ns3::NullMessageSimulatorImpl::ScheduleWithContext	(	uint32_t	context,
		Time const &	time,
		EventImpl *	event
	)

virtual

Parameters

time	delay until the event expires
context	event context
event	the event to schedule

Returns: a unique identifier for the newly-scheduled event.

This method will be typically used by language bindings to delegate events to their own subclass of the EventImpl base class.

Implements ns3::SimulatorImpl.

Definition at line 422 of file null-message-simulator-impl.cc.

References ns3::Time::GetTimeStep(), ns3::Scheduler::Event::impl, ns3::Scheduler::Event::key, ns3::Scheduler::EventKey::m_context, m_currentTs, m_events, ns3::Scheduler::EventKey::m_ts, ns3::Scheduler::EventKey::m_uid, m_uid, m_unscheduledEvents, NS_ASSERT, NS_LOG_FUNCTION, and ns3::TimeStep().

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void ns3::NullMessageSimulatorImpl::SetScheduler ( ObjectFactory schedulerFactory )

virtual

Parameters

schedulerFactory a new event scheduler factory

The event scheduler can be set at any time: the events scheduled in the previous scheduler will be transfered to the new scheduler before we start to use it.

Implements ns3::SimulatorImpl.

Definition at line 211 of file null-message-simulator-impl.cc.

References ns3::ObjectFactory::Create(), m_events, and NS_LOG_FUNCTION.

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void ns3::NullMessageSimulatorImpl::Stop ( void )

virtual

If an event invokes this method, it will be the last event scheduled by the Simulator::Run method before returning to the caller.

Implements ns3::SimulatorImpl.

Definition at line 383 of file null-message-simulator-impl.cc.

References m_stop, and NS_LOG_FUNCTION.

void ns3::NullMessageSimulatorImpl::Stop ( Time const & time )

virtual

Force the Simulator::Run method to return to the caller when the expiration time of the next event to be processed is greater than or equal to the stop time.

The stop time is relative to the current simulation time.

Parameters