ptolemy.actor.lib.aspect

Class CompositeExecutionAspect

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity

ptolemy.kernel.CompositeEntity

ptolemy.actor.CompositeActor

ptolemy.actor.TypedCompositeActor

ptolemy.actor.lib.aspect.CompositeExecutionAspect

All Implemented Interfaces:

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

public class CompositeExecutionAspect
extends TypedCompositeActor
implements ActorExecutionAspect

This is a composite execution aspect. Actors decorated by this aspect also specify a requestPort. A record token with the actor and its execution time is created on this requestPort whenever the director wants to schedule the actor. When this token is received by a ResourceMappingOutputport inside this CompositeExecutionAspect, the director is informed that the actor can now fire.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Patricia Derler

Pt.AcceptedRating:

Red (derler)

Pt.ProposedRating:

Red (derler)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompositeExecutionAspect.CompositeExecutionAspectAttributes Attributes for actors decorated by this CompositeExecutionAspects.

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

CompositeEntity.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<NamedObj>	_actors Actors decorated by this aspect.
protected java.util.List<NamedObj>	_currentlyExecuting List of currently executing actors.
protected java.util.List<ExecutionAspectListener>	_executionAspectListeners Listeners that want to be informed about execution events.
protected boolean	_lastActorFinished True if in the last request to schedule an actor, this actor finished execution.
Parameter	justMonitor This parameter indicates whether the tokens received via the ImmediateReceivers are immediately forwarded to the wrapped receivers or whether they are delayed by this communication aspect and only forwarded through a CommunicationResponsePort.

Fields inherited from class ptolemy.actor.CompositeActor

_actorFiringListeners, _causalityInterface, _derivedPiggybacks, _initializables, _notifyingActorFiring, _piggybacks, _publishedPorts, _publisherRelations, _stopRequested, _subscribedPorts

Fields inherited from class ptolemy.kernel.CompositeEntity

_levelCrossingLinks

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

Method Summary

Modifier and Type	Method and Description
void	addExecutingListener(ExecutionAspectListener listener) Add schedule listener.
void	attributeChanged(Attribute attribute) React to the change of the justMonitor attribute by updating internal variables.
java.lang.Object	clone(Workspace workspace) Clone the actor into the specified workspace.
DecoratorAttributes	createDecoratorAttributes(NamedObj target) Return the decorated attributes for the target NamedObj.
java.util.List<NamedObj>	decoratedObjects() Return a list of the entities deeply contained by the container of this ExecutionAspect.
double	getExecutionTime(NamedObj actor) Get the execution time of an actor.
void	initialize() Initialize local variables.
void	initializeDecoratedActors() Iterate through all entities deeply contained by the container, record for each that it is not executing.
boolean	isGlobalDecorator() Return true to indicate that this decorator should decorate objects across opaque hierarchy boundaries.
boolean	isWaitingForResource(Actor actor) Check whether the execution of an actor is handled by this aspect actor.
boolean	lastScheduledActorFinished() If the last actor that was scheduled finished execution then this method returns true.
void	notifyExecutionListeners(NamedObj entity, java.lang.Double time, ExecutionAspectListener.ExecutionEventType eventType) Notify execution listeners about rescheduling events.
boolean	postfire() Iterate through resource mapping output ports and if they contain tokens, inform the director of the actors in the tokens that these actors can resume execution.
void	removeExecutionListener(ExecutionAspectListener listener) Remove schedule listener.
Time	schedule(NamedObj actor, Time currentPlatformTime, Time deadline, Time executionTime) Schedule a new actor for execution.
Time	schedule(Time environmentTime) Perform rescheduling actions when no new actor requests to be scheduled.
void	setContainer(CompositeEntity container) Override the base class to first set the container, then establish a connection with any decorated objects it finds in scope in the new container.
void	setRequestPort(NamedObj actor, java.lang.String portName) Set the name of the port that will receive scheduling requests for the actor.

Methods inherited from class ptolemy.actor.TypedCompositeActor

_addEntity, _addPort, _addRelation, _checkTypesFromTo, _destinationTypeConstraints, attributeTypeChanged, isBackwardTypeInferenceEnabled, newPort, newRelation, resolveTypes, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.CompositeActor

_actorFiring, _actorFiring, _finishedAddEntity, _setDirector, _transferPortParameterInputs, addActorFiringListener, addInitializable, addPiggyback, connectionsChanged, createReceivers, createSchedule, fire, getCausalityInterface, getDirector, getExecutiveDirector, getManager, getPublishedPort, getPublishedPortChannel, getPublishedPorts, getSubscribedPortChannel, inferringWidths, inferWidths, inputPortList, isFireFunctional, isOpaque, isPublishedPort, isStrict, iterate, linkToPublishedPort, linkToPublishedPort, linkToPublishedPort, linkToPublishedPort, needsWidthInference, newInsideReceiver, newReceiver, notifyConnectivityChange, outputPortList, prefire, preinitialize, recordFiring, registerPublisherPort, registerPublisherPort, removeActorFiringListener, removeInitializable, removePiggyback, requestChange, setDirector, setManager, stop, stopFire, terminate, unlinkToPublishedPort, unlinkToPublishedPort, unlinkToPublishedPort, unlinkToPublishedPort, unregisterPublisherPort, unregisterPublisherPort, wrapup

Methods inherited from class ptolemy.kernel.CompositeEntity

_adjustDeferrals, _containedDecorators, _deepOpaqueEntityList, _description, _exportMoMLContents, _removeEntity, _removeRelation, _validateSettables, allAtomicEntityList, allowLevelCrossingConnect, classDefinitionList, connect, connect, containedObjectsIterator, deepCompositeEntityList, deepEntityList, deepGetEntities, deepNamedObjList, deepOpaqueEntityList, deepRelationSet, entityList, entityList, exportLinks, exportMoML, getAttribute, getEntities, getEntity, getPort, getRelation, getRelations, isAtomic, lazyAllAtomicEntityList, lazyAllCompositeEntityList, lazyAllCompositeTransparentAndOpaqueEntityList, lazyClassDefinitionList, lazyDeepEntityList, lazyEntityList, lazyRelationList, numberOfEntities, numberOfRelations, numEntities, numRelations, relationList, removeAllEntities, removeAllRelations, setClassDefinition, statistics, uniqueName

Methods inherited from class ptolemy.kernel.ComponentEntity

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

Methods inherited from class ptolemy.kernel.Entity

_removePort, connectedPortList, connectedPorts, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

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

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeDeleted, attributeList, attributeList, clone, 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, 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.kernel.util.Nameable

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

Methods inherited from interface ptolemy.actor.Actor

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

Methods inherited from interface ptolemy.actor.Executable

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

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable, wrapup

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Field Detail

justMonitor

public Parameter justMonitor

This parameter indicates whether the tokens received via the ImmediateReceivers are immediately forwarded to the wrapped receivers or whether they are delayed by this communication aspect and only forwarded through a CommunicationResponsePort. This parameter is a boolean that defaults to false.

_actors

protected java.util.List<NamedObj> _actors

Actors decorated by this aspect.

_lastActorFinished

protected boolean _lastActorFinished

True if in the last request to schedule an actor, this actor finished execution.

_executionAspectListeners

protected java.util.List<ExecutionAspectListener> _executionAspectListeners

Listeners that want to be informed about execution events.

_currentlyExecuting

protected java.util.List<NamedObj> _currentlyExecuting

List of currently executing actors.

Constructor Detail

CompositeExecutionAspect

public CompositeExecutionAspect(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

addExecutingListener

public void addExecutingListener(ExecutionAspectListener listener)
                          throws IllegalActionException

Add schedule listener. If necessary, initialize list of actors scheduled by this ExecutionAspect.

Specified by:

addExecutingListener in interface ActorExecutionAspect

Parameters:

listener - The listener to be added.

Throws:

IllegalActionException - If an error occurs in the initialization of actors scheduled by this ExecutionAspect.

attributeChanged

public void attributeChanged(Attribute attribute)
                      throws IllegalActionException

React to the change of the justMonitor attribute by updating internal variables.

Overrides:

attributeChanged in class TypedCompositeActor

Parameters:

attribute - The attribute that changed.

Throws:

IllegalActionException - If token in attribute cannot be accessed.

clone

public java.lang.Object clone(Workspace workspace)
                       throws java.lang.CloneNotSupportedException

Clone the actor into the specified workspace.

Overrides:

clone in class CompositeActor

Parameters:

workspace - The workspace for the new object.

Returns:

A new actor.

Throws:

java.lang.CloneNotSupportedException - If a derived class contains an attribute that cannot be cloned.

See Also:

NamedObj.exportMoML(Writer, int, String), NamedObj.setDeferringChangeRequests(boolean)

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

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.

decoratedObjects

public java.util.List<NamedObj> decoratedObjects()

Return a list of the entities deeply contained by the container of this ExecutionAspect.

Specified by:

decoratedObjects in interface Decorator

Returns:

A list of the objects decorated by this decorator.

getExecutionTime

public double getExecutionTime(NamedObj actor)
                        throws IllegalActionException

Get the execution time of an actor. If the actor does not have an attribute specifying the execution time, return the minimum execution time.

Specified by:

getExecutionTime in interface ActorExecutionAspect

Parameters:

actor - The actor.

Returns:

The execution time.

Throws:

IllegalActionException - Thrown in attribute or token cannot be read.

initialize

public void initialize()
                throws IllegalActionException

Initialize local variables.

Specified by:

initialize in interface Initializable

Overrides:

initialize in class CompositeActor

Throws:

IllegalActionException - Thrown if list of actors decorated by this aspect cannot be retrieved.

initializeDecoratedActors

public void initializeDecoratedActors()
                               throws IllegalActionException

Iterate through all entities deeply contained by the container, record for each that it is not executing.

Specified by:

initializeDecoratedActors in interface ActorExecutionAspect

Throws:

IllegalActionException - If the decorator parameters cannot be read.

isGlobalDecorator

public boolean isGlobalDecorator()

Return true to indicate that this decorator should decorate objects across opaque hierarchy boundaries.

Specified by:

isGlobalDecorator in interface Decorator

Returns:

True if decorator is global.

isWaitingForResource

public boolean isWaitingForResource(Actor actor)

Check whether the execution of an actor is handled by this aspect actor.

Specified by:

isWaitingForResource in interface ActorExecutionAspect

Parameters:

actor - The actor.

Returns:

True, if the actor execution is handled by this aspect actor.

lastScheduledActorFinished

public boolean lastScheduledActorFinished()

If the last actor that was scheduled finished execution then this method returns true.

Specified by:

lastScheduledActorFinished in interface ActorExecutionAspect

Returns:

True if last actor that was scheduled finished execution.

notifyExecutionListeners

public void notifyExecutionListeners(NamedObj entity,
                                     java.lang.Double time,
                                     ExecutionAspectListener.ExecutionEventType eventType)

Notify execution listeners about rescheduling events.

Specified by:

notifyExecutionListeners in interface ActorExecutionAspect

Parameters:

entity - Entity that is being scheduled.

time - Time when entity is being scheduled.

eventType - Type of event.

postfire

public boolean postfire()
                 throws IllegalActionException

Iterate through resource mapping output ports and if they contain tokens, inform the director of the actors in the tokens that these actors can resume execution.

Specified by:

postfire in interface Executable

Overrides:

postfire in class CompositeActor

Returns:

True if the execution can continue into the next iteration.

Throws:

IllegalActionException - Not explicitly thrown here.

schedule

public Time schedule(Time environmentTime)
              throws IllegalActionException

Perform rescheduling actions when no new actor requests to be scheduled.

Specified by:

schedule in interface ActorExecutionAspect

Parameters:

environmentTime - The outside time.

Returns:

Relative time when this aspect has to be executed again to perform rescheduling actions.

Throws:

IllegalActionException - Thrown in subclasses.

schedule

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

Schedule a new actor for execution. Find the const actor in the _model that is mapped to this actor and trigger a firing of that one, if the actor is not already in execution. If the actor finished execution, return zero time, otherwise return the next time the model has something to do.

Specified by:

schedule in interface ActorExecutionAspect

Parameters:

actor - The actor to be scheduled.

currentPlatformTime - The current platform time.

deadline - The deadline of the event.

executionTime - The execution time of the actor.

Returns:

Relative time when this aspect has to be executed again.

Throws:

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

setContainer

public void setContainer(CompositeEntity container)
                  throws IllegalActionException,
                         NameDuplicationException

Override the base class to first set the container, then establish a connection with any decorated objects it finds in scope in the new container.

Overrides:

setContainer in class CompositeActor

Parameters:

container - The container to attach this attribute to..

Throws:

IllegalActionException - If this attribute is not of the expected class for the container, or it has no name, or the attribute and container are not in the same workspace, or the proposed container would result in recursive containment.

NameDuplicationException - If the container already has an attribute with the name of this attribute.

See Also:

ComponentEntity.getContainer()

setRequestPort

public void setRequestPort(NamedObj actor,
                           java.lang.String portName)

Set the name of the port that will receive scheduling requests for the actor.

Parameters:

actor - The actor.

portName - The request port.

removeExecutionListener

public void removeExecutionListener(ExecutionAspectListener listener)

Remove schedule listener.

Specified by:

removeExecutionListener in interface ActorExecutionAspect

Parameters:

listener - The listener to be removed.