Collaboration diagram for SDFstateSpaceStaticPeriodicScheduler::TransitionSystem:

Classes
class	State
Public Types
typedef list< State >	States
typedef States::iterator	StatesIter
Public Member Functions
	TransitionSystem (TimedSDFgraph *gr)
	~TransitionSystem ()
CFraction	execSDFgraphSelfTimed ()
CFraction	execSDFgraphComputeSchedule (vector< vector< long long int > > &startTime, const long long int period, const long long int periodicity)
CFraction	execSDFgraphStaticPeriodic (const vector< vector< long long int > > &startTime, const long long int period)
Private Member Functions
bool	storeState (State &s, StatesIter &pos)
void	clearStoredStates ()
CFraction	computeThroughput (const StatesIter cycleIter)
bool	actorReadyToFire (SDFactor *a)
void	startActorFiring (TimedSDFactor *a)
bool	actorReadyToEnd (SDFactor *a)
void	endActorFiring (SDFactor *a)
SDFtime	clockStep (SDFtime step=UINT_MAX)
void	initOutputActor ()
Private Attributes
TimedSDFgraph *	g
CId	outputActor
TCnt	outputActorRepCnt
State	currentState
States	storedStates

Member Typedef Documentation

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

typedef States::iterator SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::StatesIter

Constructor & Destructor Documentation

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

References g, and initOutputActor().

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

Member Function Documentation

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

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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bool SDFstateSpaceStaticPeriodicScheduler::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 execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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

References storedStates.

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

SDFtime SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::clockStep ( SDFtime step = UINT_MAX ) [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, SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::actClk, currentState, g, SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::glbClk, and SDFgraph::nrActors().

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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CFraction SDFstateSpaceStaticPeriodicScheduler::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 SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::glbClk, and storedStates.

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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

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

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

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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CFraction SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::execSDFgraphComputeSchedule	(	vector< vector< long long int > > &	startTime,
		const long long int	period,
		const long long int	periodicity
	)

execSDFgraphComputeSchedule() Execute the SDF graph and compute a static-periodic schedule. The function returns the throughput of the SDF graph.

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

Referenced by SDFstateSpaceStaticPeriodicScheduler::schedule().

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CFraction SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::execSDFgraphSelfTimed ( )

execSDFgraphSelfTimed() 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(), SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::clear(), clearStoredStates(), clockStep(), computeThroughput(), currentState, endActorFiring(), g, SDFcomponent::getId(), SDFchannel::getInitialTokens(), SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::glbClk, SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::State::init(), SDFgraph::nrActors(), SDFgraph::nrChannels(), outputActor, outputActorRepCnt, printState(), startActorFiring(), and storeState().

Referenced by SDFstateSpaceStaticPeriodicScheduler::schedule().

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CFraction SDFstateSpaceStaticPeriodicScheduler::TransitionSystem::execSDFgraphStaticPeriodic	(	const vector< vector< long long int > > &	startTime,
		const long long int	period
	)

execSDFgraphStaticPeriodic() Execute the SDF graph following the supplied schedule. The function returns the throughput of the graph under the given schedule or zero when the schedule cannot be met.

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

Referenced by SDFstateSpaceStaticPeriodicScheduler::schedule().

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

Referenced by execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().

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bool SDFstateSpaceStaticPeriodicScheduler::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 execSDFgraphComputeSchedule(), execSDFgraphSelfTimed(), and execSDFgraphStaticPeriodic().