Collaboration diagram for SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem:

Classes
class	State
Public Types
typedef list< State >	States
typedef States::iterator	StatesIter
Public Member Functions
	TransitionSystem (TimedSDFgraph *gr)
	~TransitionSystem ()
TDtime	execSDFgraph (SDFactor srcActor, SDFactor dstActor, vector< SDFtime > &timeSrcFire, vector< SDFtime > &timeDstFire, uint distance)
Private Member Functions
bool	storeState (State &s, StatesIter &pos)
void	clearStoredStates ()
TDtime	computeThroughput (const StatesIter cycleIter)
bool	actorReadyToFire (SDFactor *a)
void	startActorFiring (TimedSDFactor *a)
bool	actorReadyToEnd (SDFactor *a)
void	endActorFiring (SDFactor *a)
SDFtime	clockStep ()
void	initOutputActor ()
Private Attributes
TimedSDFgraph *	g
CId	outputActor
TCnt	outputActorRepCnt
State	currentState
State	previousState
States	storedStates

Member Typedef Documentation

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

typedef States::iterator SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::StatesIter

Constructor & Destructor Documentation

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

References g, and initOutputActor().

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

Member Function Documentation

bool SDFstateSpaceSelfTimedLatencyAnalysis::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 SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::actClk, currentState, and SDFcomponent::getId().

Referenced by execSDFgraph().

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bool SDFstateSpaceSelfTimedLatencyAnalysis::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_TOKENS, SDFport::getChannel(), SDFcomponent::getId(), SDFport::getRate(), SDFport::getType(), SDFactor::portsBegin(), and SDFactor::portsEnd().

Referenced by execSDFgraph().

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

References storedStates.

Referenced by execSDFgraph().

SDFtime SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::clockStep ( ) [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, SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::actClk, currentState, g, SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::glbClk, and SDFgraph::nrActors().

Referenced by execSDFgraph().

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TDtime SDFstateSpaceSelfTimedLatencyAnalysis::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 SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::glbClk, and storedStates.

Referenced by execSDFgraph().

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

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

References SDFstateSpaceSelfTimedLatencyAnalysis::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 SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::execSDFgraph	(	SDFactor *	srcActor,
		SDFactor *	dstActor,
		vector< SDFtime > &	timeSrcFire,
		vector< SDFtime > &	timeDstFire,
		uint	distance
	)

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, SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::ch, CH, SDFgraph::channelsBegin(), SDFgraph::channelsEnd(), SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::clear(), clearStoredStates(), clockStep(), computeThroughput(), currentState, endActorFiring(), g, SDFcomponent::getId(), SDFchannel::getInitialTokens(), SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::glbClk, SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::init(), SDFgraph::nrActors(), SDFgraph::nrChannels(), outputActor, outputActorRepCnt, previousState, startActorFiring(), and storeState().

Referenced by SDFstateSpaceSelfTimedLatencyAnalysis::analyze().

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void SDFstateSpaceSelfTimedLatencyAnalysis::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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void SDFstateSpaceSelfTimedLatencyAnalysis::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 SDFstateSpaceSelfTimedLatencyAnalysis::TransitionSystem::State::actClk, c, CONSUME, currentState, SDFport::getChannel(), TimedSDFactor::getExecutionTime(), SDFcomponent::getId(), SDFport::getRate(), SDFport::getType(), SDFactor::portsBegin(), and SDFactor::portsEnd().

Referenced by execSDFgraph().

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bool SDFstateSpaceSelfTimedLatencyAnalysis::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().