Collaboration diagram for SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem:

Classes
class	State
Public Types
typedef list< State >	States
typedef States::iterator	StatesIter
Public Member Functions
	TransitionSystem (TimedSDFgraph *gr)
	~TransitionSystem ()
TDtime	execSDFgraph (const TBufSize *sp, SDFtime &period, vector< SDFtime > &startTime)
Private Member Functions
bool	storeState (State &s, StatesIter &pos)
void	clearStoredStates ()
TDtime	computeThroughput (const StatesIter cycleIter)
bool	releaseStorageSpaceSharedOutputBuffer (SDFchannel *c)
bool	actorReadyToFire (SDFactor *a)
void	startActorFiring (TimedSDFactor *a)
bool	actorReadyToEnd (SDFactor *a)
void	endActorFiring (SDFactor *a)
SDFtime	clockStep (vector< SDFtime > &startTime, vector< uint > &fireCnt, SDFtime &period, TTime &globalTime)
void	initOutputActor ()
Private Attributes
TimedSDFgraph *	g
SDFactor *	outputActor
TCnt	outputActorRepCnt
State	currentState
States	storedStates

Member Typedef Documentation

typedef list<State> SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::States

typedef States::iterator SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::StatesIter

Constructor & Destructor Documentation

SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::TransitionSystem ( TimedSDFgraph * gr ) [inline]

References g, and initOutputActor().

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SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::~TransitionSystem ( ) [inline]

Member Function Documentation

bool SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::actorReadyToEnd ( SDFactor * a ) [private]

actorReadyToEnd () The function returns true when the actor is ready to end its firing. Else the function returns false.

References SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::actClk, currentState, and SDFcomponent::getId().

Referenced by execSDFgraph().

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bool SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::actorReadyToFire ( SDFactor * a ) [private]

actorReadyToFire () The function returns true when the actor is ready to fire in state s. Else it returns false.

References c, CH_SPACE, CH_TOKENS, SDFport::getChannel(), SDFcomponent::getId(), SDFport::getRate(), SDFchannel::getSrcActor(), SDFport::getType(), SDFactor::portsBegin(), and SDFactor::portsEnd().

Referenced by execSDFgraph().

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void SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::clearStoredStates ( ) [inline, private]

References storedStates.

Referenced by execSDFgraph().

SDFtime SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::clockStep	(	vector< SDFtime > &	startTime,
		vector< uint > &	fireCnt,
		SDFtime &	period,
		TTime &	globalTime
	)			`[private]`

clockStep () The function progresses time till the first end of firing transition becomes enabled. The time step is returned. In case of deadlock, the time step is equal to UINT_MAX.

References a, SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::actClk, currentState, g, SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::glbClk, and SDFgraph::nrActors().

Referenced by execSDFgraph().

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TDtime SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::computeThroughput ( const StatesIter cycleIter ) [private]

computeThroughput () The function calculates the throughput of the states on the cycle. Its value is equal to the average number of firings of an actor per time unit.

References SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::glbClk, and storedStates.

Referenced by execSDFgraph().

void SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::endActorFiring ( SDFactor * a ) [private]

endActorFiring () Produce tokens on all output channels and remove the actor firing from the list of active firings.

References SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::actClk, c, currentState, SDFport::getChannel(), SDFcomponent::getId(), SDFport::getRate(), SDFport::getType(), SDFactor::portsBegin(), SDFactor::portsEnd(), and PRODUCE.

Referenced by execSDFgraph().

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TDtime SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::execSDFgraph	(	const TBufSize *	sp,
		SDFtime &	period,
		vector< SDFtime > &	startTime
	)

execSDFgraph() Execute the SDF graph till a deadlock is found or a recurrent state. The throughput is returned.

References a, actorReadyToEnd(), actorReadyToFire(), SDFgraph::actorsBegin(), SDFgraph::actorsEnd(), c, CH, SDFgraph::channelsBegin(), SDFgraph::channelsEnd(), SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::clear(), clearStoredStates(), clockStep(), computeThroughput(), currentState, endActorFiring(), g, SDFcomponent::getId(), SDFchannel::getInitialTokens(), SDFchannel::getSrcActor(), SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::glbClk, SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::init(), SDFgraph::nrActors(), SDFgraph::nrChannels(), outputActor, outputActorRepCnt, SP, startActorFiring(), and storeState().

Referenced by SDFstateSpaceThroughputAnalysisNingGao::analyze().

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void SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::initOutputActor ( ) [private]

initOutputActor () The function selects an actor to be used as output actor in the state transition system.

References a, SDFgraph::actorsBegin(), SDFgraph::actorsEnd(), FSMSADF::computeRepetitionVector(), g, SDFcomponent::getId(), outputActor, and outputActorRepCnt.

Referenced by TransitionSystem().

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bool SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::releaseStorageSpaceSharedOutputBuffer ( SDFchannel * c ) [private]

releaseStorageSpaceSharedOutputBuffer () The function checks whether space must be produced on the shared output buffer. This is the case when the channel 'c' is the last channel to consume the token from the shared output buffer connected to the source of the channel. This condition is met when all outgoing channels of the source actor of the channel 'c' contain less tokens then the channel 'c'.

References a, CH, SDFport::getChannel(), SDFcomponent::getId(), SDFchannel::getSrcActor(), SDFport::getType(), SDFactor::portsBegin(), and SDFactor::portsEnd().

Referenced by startActorFiring().

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void SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::startActorFiring ( TimedSDFactor * a ) [private]

startActorFiring () Start the actor firing. Remove tokens from all input channels and add the actor firing to the list of active actor firings and advance sequence position.

References SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::State::actClk, c, CONSUME, CONSUME_SP, currentState, SDFport::getChannel(), TimedSDFactor::getExecutionTime(), SDFcomponent::getId(), SDFport::getRate(), SDFchannel::getSrcActor(), SDFport::getType(), SDFactor::portsBegin(), SDFactor::portsEnd(), PRODUCE_SP, and releaseStorageSpaceSharedOutputBuffer().

Referenced by execSDFgraph().

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bool SDFstateSpaceThroughputAnalysisNingGao::TransitionSystem::storeState	(	State &	s,
		StatesIter &	pos
	)			`[private]`

storeState () The function stores the state s on whenever s is not already in the list of storedStates. When s is stored, the function returns true. When the state s is already in the list, the state s is not stored. The function returns false. The function always sets the pos variable to the position where the state s is in the list.

References storedStates.

Referenced by execSDFgraph().