ptolemy.domains.sequence.kernel

Class ProcessDirector

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.util.Attribute

ptolemy.actor.Director

ptolemy.domains.sequence.kernel.SequencedModelDirector

ptolemy.domains.sequence.kernel.ProcessDirector

All Implemented Interfaces:

java.lang.Cloneable, Executable, Initializable, Changeable, Debuggable, DebugListener, Derivable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

public class ProcessDirector
extends SequencedModelDirector

The ProcessDirector implements a sequencing model of computation plus process names. The order of execution is given by adding ProcessAttributes to actors in the model. A ProcessAttribute is a tuple (string processName, int sequenceNumber) Please see SequencedModelDirector for more details on how the schedule is computed.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Elizabeth Latronico (Bosch)

Pt.AcceptedRating:

Red (beth)

Pt.ProposedRating:

Red (beth)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.util.NamedObj

NamedObj.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected MultiHashMap	_processSeqMap The hashMap for Process and corresponding sequence numbers.
Parameter	defaultProcessExecutionArray Parameter that contains the default list of processes to run.

Fields inherited from class ptolemy.domains.sequence.kernel.SequencedModelDirector

_iterationCount, _postfireReturns, _scheduler, _sequencedList, defaultOutputInitialValue, fireUnexecutedActors, iterations, userDefinedDefaultOutputInitialValue, userDefinedOutputInitialValue

Fields inherited from class ptolemy.actor.Director

_actorsFinishedExecution, _aspectForActor, _aspectsPresent, _defaultMicrostep, _executionAspects, _finishRequested, _initializables, _nextScheduleTime, _stopRequested, _tokenSentToCommunicationAspect, _zeroTime, localClock, startTime, stopTime

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
ProcessDirector() Construct a director in the default workspace with an empty string as its name.
ProcessDirector(CompositeEntity container, java.lang.String name) Construct a director in the given container with the given name.
ProcessDirector(Workspace workspace) Construct a director in the workspace with an empty name.

Method Summary

Modifier and Type	Method and Description
protected java.lang.String[]	_getDefaultProcessExecutionArray() Return the default process execution array specified by the defaultProcessExecutionArray parameter.
protected void	_init() Initialize the object.
void	clearProcessExecutionArray() Clear the process execution array so that the default process execution will run.
void	fire() Get a firingIterator for each process and execute the model.
void	preinitialize() Preinitialize the actors associated with this director and compute the schedule.
void	setProcessExecutionArray(java.lang.String[] processArray) Set the process execution order by providing an array of process names.

Methods inherited from class ptolemy.domains.sequence.kernel.SequencedModelDirector

_getInitialValueParameterName, _setScheduler, checkAttributeType, clone, fireSchedule, getContainedEntities, getScheduler, initialize, invalidateSchedule, isScheduleValid, newReceiver, postfire, setOutputInitialValues, setScheduler, suggestedModalModelDirectors, supportMultirateFiring

Methods inherited from class ptolemy.actor.Director

_actorFinished, _consultTimeRegulators, _description, _isEmbedded, _isTopLevel, _schedule, _transferInputs, _transferOutputs, addInitializable, attributeChanged, createSchedule, defaultDependency, delayDependency, elapsedTimeSinceStart, finish, fireAt, fireAt, fireAt, fireAtCurrentTime, fireContainerAt, fireContainerAt, getCausalityInterface, getCurrentTime, getDeadline, getEnvironmentTime, getExecutionAspect, getGlobalTime, getModelNextIterationTime, getModelStartTime, getModelStopTime, getModelTime, getNextIterationTime, getStartTime, getStopTime, getTimeResolution, implementsStrictActorSemantics, initialize, invalidateResolvedTypes, isEmbedded, isFireFunctional, isStopRequested, isStrict, iterate, mutexLockObject, notifyTokenSentToCommunicationAspect, prefire, preinitialize, removeInitializable, requestInitialization, resume, resumeActor, scheduleContainedActors, setContainer, setCurrentTime, setEmbedded, setModelTime, setTimeResolution, stop, stopFire, suspend, terminate, transferInputs, transferOutputs, transferOutputs, wrapup

Methods inherited from class ptolemy.kernel.util.Attribute

_checkContainer, _getContainedObject, _propagateExistence, getContainer, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, setName, updateContent

Methods inherited from class ptolemy.kernel.util.NamedObj

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

Methods inherited from class java.lang.Object

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

Field Detail

defaultProcessExecutionArray

public Parameter defaultProcessExecutionArray

Parameter that contains the default list of processes to run.

_processSeqMap

protected MultiHashMap _processSeqMap

The hashMap for Process and corresponding sequence numbers.

Constructor Detail

ProcessDirector

public ProcessDirector()
                throws IllegalActionException,
                       NameDuplicationException

Construct a director in the default workspace with an empty string as its name. The director is added to the list of objects in the workspace. Increment the version number of the workspace. The ProcessDirector will have a default scheduler of type SequenceScheduler.

Throws:

IllegalActionException - If the name has a period in it, or the director is not compatible with the specified container.

NameDuplicationException - If the container already contains an entity with the specified name.

ProcessDirector

public ProcessDirector(Workspace workspace)
                throws IllegalActionException,
                       NameDuplicationException

Construct a director in the workspace with an empty name. The director is added to the list of objects in the workspace. Increment the version number of the workspace. The ProcessDirector will have a default scheduler of type SequenceScheduler.

Parameters:

workspace - The workspace for this object.

Throws:

IllegalActionException - If the name has a period in it, or the director is not compatible with the specified container.

NameDuplicationException - If the container already contains an entity with the specified name.

ProcessDirector

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

Construct a director in the given container with the given name. The container argument must not be null, or a NullPointerException will be thrown. If the name argument is null, then the name is set to the empty string. Increment the version number of the workspace. The ProcessDirector will have a default scheduler of type SequenceScheduler.

Parameters:

container - Container of the director.

name - Name of this director.

Throws:

IllegalActionException - If the director is not compatible with the specified container. May be thrown in a derived class.

NameDuplicationException - If the container is not a CompositeActor and the name collides with an entity in the container.

Method Detail

clearProcessExecutionArray

public void clearProcessExecutionArray()

Clear the process execution array so that the default process execution will run.

fire

public void fire()
          throws IllegalActionException

Get a firingIterator for each process and execute the model. Currently, the processes are sorted alphabetically; however, they could be sorted differently in the future. Also, the processes could "pre-empt" each other, by using the appropriate firingIterator. I.e. it isn't necessary to fire everything from start to finish for one firingIterator before choosing a different one. Iterating an actor involves calling the actor's iterate() method, which is equivalent to calling the actor's prefire(), fire() and postfire() methods in succession. If iterate() returns NOT_READY, indicating that the actor is not ready to execute, then an IllegalActionException will be thrown. The values returned from iterate() are recorded and are used to determine the value that postfire() will return at the end of the director's iteration.

This method may be overridden by some domains to perform additional domain-specific operations.

Specified by:

fire in interface Executable

Overrides:

fire in class Director

Throws:

IllegalActionException - If any actor executed by this actor return false in prefire.

InvalidStateException - If this director does not have a container.

preinitialize

public void preinitialize()
                   throws IllegalActionException

Preinitialize the actors associated with this director and compute the schedule. The schedule is computed during preinitialization so that hierarchical opaque composite actors can be scheduled properly. In addition, performing scheduling during preinitialization enables it to be present during code generation. The order in which the actors are preinitialized is arbitrary.

Specified by:

preinitialize in interface Initializable

Overrides:

preinitialize in class SequencedModelDirector

Throws:

IllegalActionException - If the preinitialize() method of one of the associated actors throws it.

setProcessExecutionArray

public void setProcessExecutionArray(java.lang.String[] processArray)

Set the process execution order by providing an array of process names.

Parameters:

processArray - The array of process names to be executed in the order they are specified in the array.

_init

protected void _init()
              throws IllegalActionException,
                     NameDuplicationException

Initialize the object. In addition to all the parameters in the SequencedModelDirector base class, we also initialize the defaultProcessExecutionArray parameter which is specific to the Process Director.

Overrides:

_init in class SequencedModelDirector

Throws:

IllegalActionException - If there is a problem instantiating the director's parameters.

NameDuplicationException - If there is a problem instantiating the director's parameters.

_getDefaultProcessExecutionArray

protected java.lang.String[] _getDefaultProcessExecutionArray()
                                                       throws IllegalActionException

Return the default process execution array specified by the defaultProcessExecutionArray parameter.

Returns:

The string array of process names to be executed.

Throws:

IllegalActionException - If there is a problem getting the array token from the parameter.