cParsimSynchronizer Class Reference

Parallel Simulation API: cParsimSynchronizer Class Reference
Parallel Simulation API
Public Member Functions
cParsimSynchronizer Class Referenceabstract
Parallel simulation support
Inheritance diagram for cParsimSynchronizer:
[legend]

Public Member Functions

 cParsimSynchronizer ()
virtual ~cParsimSynchronizer ()
virtual std::string str () const override
virtual void setContext (cSimulation *sim, cParsimPartition *seg, cParsimCommunications *co)
virtual void startRun () override=0
virtual void endRun () override=0
virtual cEvent * guessNextEvent () override
virtual cEvent * takeNextEvent () override=0
virtual void processOutgoingMessage (cMessage *msg, const SendOptions &options, int procId, int moduleId, int gateId, void *data)=0

Description

Abstract base class for parallel simulation algorithms. Subclasses implement the "null message algorithm" and others.

Task of this layer is to implement conservative synchronization, that is, block the execution at time points where it is not safe to proceed since events from other partitions will (may) arrive before the next local event.

Synchronizer integrates into the simulation kernel via the takeNextEvent() and processOutgoingMessage() functions:

Constructor & Destructor Documentation

◆ cParsimSynchronizer()

cParsimSynchronizer ( )
inline

Constructor.

◆ ~cParsimSynchronizer()

virtual ~cParsimSynchronizer ( )
inlinevirtual

Destructor.

Member Function Documentation

◆ str()

virtual std::string str ( ) const
overridevirtual

Return "parsim scheduler" as description.

◆ setContext()

virtual void setContext ( cSimulation * sim,
cParsimPartition * seg,
cParsimCommunications * co )
inlinevirtual

Pass cParsimSynchronizer the objects it has to cooperate with.

Reimplemented in cNullMessageProtocol.

◆ startRun()

virtual void startRun ( )
overridepure virtual

Called at the beginning of a simulation run.

Implemented in cIdealSimulationProtocol, cISPEventLogger, cNoSynchronization, and cNullMessageProtocol.

◆ endRun()

virtual void endRun ( )
overridepure virtual

Called at the end of a simulation run.

Implemented in cIdealSimulationProtocol, cISPEventLogger, cNoSynchronization, and cNullMessageProtocol.

◆ guessNextEvent()

virtual cEvent * guessNextEvent ( )
overridevirtual

Returns the first event in the Future Event Set.

◆ takeNextEvent()

virtual cEvent * takeNextEvent ( )
overridepure virtual

Scheduler function – it comes from cScheduler interface.

Implemented in cIdealSimulationProtocol, cISPEventLogger, cNoSynchronization, and cNullMessageProtocol.

◆ processOutgoingMessage()

virtual void processOutgoingMessage ( cMessage * msg,
const SendOptions & options,
int procId,
int moduleId,
int gateId,
void * data )
pure virtual

Hook, called when a cMessage is sent out of the partition. It is provided here so that the synchronizer can potentially perform optimizations, such as piggybacking null messages (see null message algorithm) on outgoing messages.

Implemented in cISPEventLogger, cNullMessageProtocol, and cParsimProtocolBase.

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