Package ptolemy.actor.lib.aspect

Class FCFSScheduler

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity<T>

ptolemy.actor.AtomicActor<TypedIOPort>

ptolemy.actor.TypedAtomicActor

ptolemy.actor.lib.aspect.AtomicExecutionAspect

ptolemy.actor.lib.aspect.FCFSScheduler

All Implemented Interfaces:

java.lang.Cloneable, Actor, ActorExecutionAspect, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Decorator, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

public class FCFSScheduler
extends AtomicExecutionAspect

This is a first come first serve scheduler.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Patricia Derler

Pt.AcceptedRating:

Red (derler)

Pt.ProposedRating:

Red (derler)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.Entity

Entity.ContainedObjectsIterator

Field Summary

Fields inherited from class ptolemy.actor.lib.aspect.AtomicExecutionAspect

_actors, _executionAspectListeners, _lastActorFinished, _lastActorThatFinished, _lastTimeScheduled, _remainingTimes

Fields inherited from class ptolemy.actor.TypedAtomicActor

_typesValid

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.actor.Executable

COMPLETED, NOT_READY, STOP_ITERATING

Constructor Summary

Constructors

Constructor	Description
FCFSScheduler(CompositeEntity container, java.lang.String name)	Create a new actor in the specified container with the specified name.

Method Summary

Modifier and Type	Method	Description
DecoratorAttributes	createDecoratorAttributes(NamedObj target)	Return the decorated attributes for the target NamedObj.
Time	schedule(NamedObj actor, Time currentPlatformTime, Time deadline, Time executionTime)	Schedule a new actor for execution and return the next time this scheduler has to perform a reschedule.

Methods inherited from class ptolemy.actor.lib.aspect.AtomicExecutionAspect

_getDeadline, addExecutingListener, clone, decoratedObjects, fire, getExecutionTime, getRemainingTime, getTime, initialize, initializeDecoratedActors, isGlobalDecorator, isWaitingForResource, lastActorFinished, lastScheduledActorFinished, notifyExecutionListeners, removeExecutionListener, schedule, setContainer, wrapup

Methods inherited from class ptolemy.actor.TypedAtomicActor

_containedTypeConstraints, _customTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, stop, stopFire, terminate

Methods inherited from class ptolemy.kernel.ComponentEntity

_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName

Methods inherited from class ptolemy.kernel.Entity

_addPort, _description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, decorators, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, notifyOfNameChange, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspace

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface ptolemy.actor.Actor

createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, isStrict, iterate, postfire, prefire, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getDisplayName, getFullName, getName, getName, setName

Constructor Detail

FCFSScheduler

public FCFSScheduler(CompositeEntity container,
                     java.lang.String name)
              throws IllegalActionException,
                     NameDuplicationException

Create a new actor in the specified container with the specified name. The name must be unique within the container or an exception is thrown. The container argument must not be null, or a NullPointerException will be thrown.

Parameters:

container - The container.

name - The name of this actor within the container.

Throws:

IllegalActionException - If this actor cannot be contained by the proposed container (see the setContainer() method).

NameDuplicationException - If the name coincides with an entity already in the container.

Method Detail

createDecoratorAttributes

public DecoratorAttributes createDecoratorAttributes(NamedObj target)

Return the decorated attributes for the target NamedObj. If the specified target is not an Actor, return null.

Specified by:

createDecoratorAttributes in interface Decorator

Overrides:

createDecoratorAttributes in class AtomicExecutionAspect

Parameters:

target - The NamedObj that will be decorated.

Returns:

The decorated attributes for the target NamedObj, or null if the specified target is not an Actor.

schedule

public Time schedule(NamedObj actor,
                     Time currentPlatformTime,
                     Time deadline,
                     Time executionTime)
              throws IllegalActionException

Schedule a new actor for execution and return the next time this scheduler has to perform a reschedule.

Specified by:

schedule in interface ActorExecutionAspect

Overrides:

schedule in class AtomicExecutionAspect

Parameters:

actor - The actor to be scheduled.

currentPlatformTime - The current platform time.

deadline - The deadline - not used here.

executionTime - The execution time of the actor.

Returns:

Relative time when this Scheduler has to be executed again.

Throws:

IllegalActionException - Thrown if actor parameters such as execution time or priority cannot be read.