Examples of ptolemy.actor.Director

ptolemy.actor.Director
A Director governs the execution within a CompositeActor. A composite actor that contains a director is said to be opaque, and the execution model within the composite actor is determined by the contained director. This director is called the local director of a composite actor. A composite actor is also aware of the director of its container, which is referred to as its executive director. A director may also be contained by a CompositeEntity that is not a CompositeActor, in which case it acts like any other entity within that composite.
A top-level composite actor is generally associated with a manager as well as a local director. The Manager has overall responsibility for executing the application, and is often associated with a GUI. Top-level composite actors have no executive director and getExecutiveDirector() will return null.
A local director is responsible for invoking the actors contained by the composite. If there is no local director, then the executive director is given the responsibility. The getDirector() method of CompositeActor, therefore, returns the local director, if there is one, and otherwise returns the executive director. Thus, it returns whichever director is responsible for executing the contained actors, or null if there is none. Whatever it returns is called simply the director (vs. local director or executive director).
A director implements the action methods (preinitialize(), initialize(), prefire(), fire(), postfire(), iterate(), and wrapup()). In this base class, default implementations are provided that may or may not be useful in specific domains. In general, these methods will perform domain-dependent actions, and then call the respective methods in all contained actors.
The director also provides methods to optimize the iteration portion of an execution. This is done by setting the workspace to be read-only during an iteration. In this base class, the default implementation results in a read/write workspace. Derived classes (e.g. domain specific directors) should override the _writeAccessRequired() method to report that write access is not required. If none of the directors in a simulation require write access, then it is safe to set the workspace to be read-only, which will result in faster execution.
This class also specifies a parameter timeResolution. This is a double with default 1E-10, which is 10^-10. All time values are rounded to the nearest multiple of this value. If the value is changed during a run, an exception is thrown. This is a shared parameter, which means that all instances of Director in the model will have the same value for this parameter. Changing one of them changes all of them.
The timeResolution parameter is not visible to the user by default. Subclasses can make it visible by calling
```
 timeResolution.setVisibility(Settable.FULL); 
```
in their constructors. @author Mudit Goel, Edward A. Lee, Lukito Muliadi, Steve Neuendorffer, John Reekie @version $Id: Director.java,v 1.266 2007/12/07 06:25:19 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Yellow (neuendor)

                throw new InternalErrorException(this, ex,
                        "Failed to cast toplevel '" + toplevel
                                + "' to a CompositeActor");
            }


            Director director = compositeActor.getDirector();


            // If we save a blank model, then there might not be a director.
            Parameter iterations = (StringParameter) getAttribute("iterations");


            if (director == null) {
                iterations.setExpression("1000");
            } else {
                Attribute directorIterations = director
                        .getAttribute("iterations");


                if (directorIterations != null) {
                    Token iterationsToken = ((Parameter) directorIterations)
                            .getToken();

View Full Code Here

     *  CTTransparentDirector. Otherwise, do nothing.
     *  @exception IllegalActionException If tentative states cannot
     *  be emitted.
     */
    public void emitCurrentStates() throws IllegalActionException {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            ((CTTransparentDirector) director).emitCurrentStates();
        }
    }

View Full Code Here

     *  director if it is an instance of
     *  CTTransparentDirector. Otherwise, do nothing.
     *  @exception IllegalActionException If there is no marked state.
     */
    public void goToMarkedState() throws IllegalActionException {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            ((CTTransparentDirector) director).goToMarkedState();
        }
    }

View Full Code Here

     *  that this composite actor does not have an event at the
     *  current time.
     *  @return True if there is an event at the current time.
     */
    public boolean hasCurrentEvent() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).hasCurrentEvent();
        }
        return false;
    }

View Full Code Here

     *  CTTransparentDirector. Otherwise, return true, which indicates
     *  the current step size is accurate w.r.t. outputs.
     *  @return True if the current step size is accurate w.r.t. outputs.
     */
    public boolean isOutputAccurate() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).isOutputAccurate();
        }
        return true;
    }

View Full Code Here

     *  the current step size is accurate w.r.t. the current states.
     *  @return True if the current step size is accurate w.r.t. the current
     *  states.
     */
    public boolean isStateAccurate() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).isStateAccurate();
        }
        return true;
    }

View Full Code Here


    /** Call the markState() method of the current refinement director if it
     *  is an instance of CTTransparentDirector. Otherwise, do nothing.
     */
    public void markState() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            ((CTTransparentDirector) director).markState();
        }
    }

View Full Code Here

     *  CTTransparentDirector. Otherwise, return
     *  java.lang.Double.MAX_VALUE.
     *  @return The predicted step size.
     */
    public double predictedStepSize() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).predictedStepSize();
        }
        return java.lang.Double.MAX_VALUE;
    }

View Full Code Here

     *  not an instance of CTTransparentDirector, return true always.
     *  @return True if all dynamic actors are prefired.
     *  @exception IllegalActionException If the local director throws it.
     */
    public boolean prefireDynamicActors() throws IllegalActionException {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).prefireDynamicActors();
        }
        return true;
    }

View Full Code Here

     *  CTTransparentDirector. Otherwise, return the current step size
     *  of the executive director.
     *  @return The refined step size.
     */
    public double refinedStepSize() {
        Director director = _current.getDirector();
        if (director instanceof CTTransparentDirector) {
            return ((CTTransparentDirector) director).refinedStepSize();
        }
        return ((CTGeneralDirector) getExecutiveDirector())
                .getCurrentStepSize();

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of ptolemy.actor.Director

fr.soleil.bossanova.controller.BossaNovaSequencerImpl

ptolemy.actor.lib.hoc.IterateOverArray$IterateDirector

ptolemy.actor.lib.hoc.RealTimeComposite$RealTimeDirector

ptolemy.actor.lib.PoissonClock

ptolemy.actor.lib.TimedSource

ptolemy.actor.util.Time

ptolemy.backtrack.automatic.ptolemy.actor.lib.PoissonClock

ptolemy.data.Token

ptolemy.domains.continuous.kernel.ContinuousDirector

ptolemy.domains.continuous.kernel.HybridModalDirector

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.