Examples of ptolemy.actor.process.TerminateProcessException

ptolemy.actor.process.TerminateProcessException
This exception is thrown to terminate a process. This is only a notification exception that a ProcessDirector uses to terminate all the processes gracefully. It is not an exception that indicates an error in the code or model.
In the process domains (PN and CSP for example), a simulation is terminated only when a deadlock is detected. During a deadlock, the threads corresponding to actors are normally blocked on a method call to the receiver. This exception is normally thrown from these methods, so that the threads can return from the call and terminate themselves.
This class is a standalone class and not derived from the Ptolemy Runtime exceptions as those exceptions indicate an error in the model, while this exception is used for passing of information to the threads. @author Neil Smyth, Mudit Goel @version $Id: TerminateProcessException.java,v 1.32 2006/10/02 04:06:15 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (mudit) @Pt.AcceptedRating Yellow (mudit)

     * is interrupted while waiting.
     */
    public static void waitForChange(RendezvousDirector director)
            throws TerminateProcessException {
        if (director.isStopRequested() || director._inWrapup) {
            throw new TerminateProcessException("Thread terminated.");
        }


        try {
            director.wait();
        } catch (InterruptedException e) {
            throw new TerminateProcessException("Thread interrupted.");
        }


        if (director.isStopRequested() || director._inWrapup) {
            throw new TerminateProcessException("Thread terminated.");
        }
    }

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                return (RendezvousDirector) container.getExecutiveDirector();
            }
        } catch (NullPointerException ex) {
            // If a thread has a reference to a receiver with no director it
            // is an error so terminate the process.
            throw new TerminateProcessException(
                    "RendezvousReceiver: trying to "
                            + "rendezvous with a receiver with no "
                            + "director => terminate.");
        }
    }

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            throws IllegalActionException {
        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {
            if (((ProcessDirector) actor.getDirector()).isStopFireRequested()) {
                throw new TerminateProcessException(actor, ex.getMessage());


                // Ignore
            } else {
                throw new IllegalActionException(actor, ex,
                        "InterruptedException during a sleeping thread.");

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                            + "have the earliest time stamp.");
        }


        synchronized (_director) {
            if (_terminate) {
                throw new TerminateProcessException("");
            }


            Token token = super.get();


            // Need to mark any thread that is write blocked on

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                    _director.threadUnblocked(_readPending, this,
                            DDEDirector.READ_BLOCKED);
                    _readPending = null;
                }


                throw new TerminateProcessException("");
            }
        }


        if (sendNullTokens) {
            timeKeeper.sendOutNullTokens(this);

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                    _director.threadUnblocked(_writePending, this,
                            DDEDirector.WRITE_BLOCKED);
                    _writePending = null;
                }


                throw new TerminateProcessException(getContainer(),
                        "This receiver has been terminated during _put()");
            }
        }


        put(token, time);

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                    }


                    if (_cancelDelay) {
                        // Throwing this exception is really not
                        // not necessary for a "well" written actor.
                        throw new TerminateProcessException("delay cancelled");
                    }
                }
            }
        } catch (InterruptedException ex) {
            throw new TerminateProcessException("CSPActor interrupted "
                    + "while delayed.");
        }
    }

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                while (_delayed) {
                    director.wait();
                }
            }
        } catch (InterruptedException ex) {
            throw new TerminateProcessException("CSPActor interrupted "
                    + "while waiting for deadlock.");
        }
    }

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                    director.wait();
                }
            }
            if (_successfulBranch == -1) {
                // Conditional construct was ended prematurely
                throw new TerminateProcessException(((Nameable) getParent())
                        .getName()
                        + ": exiting conditional"
                        + " branching due to TerminateProcessException.");
            }


            _threadList = null;


            // Is it necessary to copy this? Note the finally clause below.
            int result = _successfulBranch;
            if (_debugging) {
                _debug("** Succeessful branch: " + result);
            }
            return result;
        } catch (InterruptedException ex) {
            throw new TerminateProcessException(((Nameable) getParent())
                    .getName()
                    + ".chooseBranch interrupted.");
        } finally {
            _branches = null;
            _successfulBranch = -1;

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                if (successfulBranch == -1) {
                    // all guards false so exit CDO
                    continueCDO = false;
                } else if (!flag) {
                    throw new TerminateProcessException(getName() + ": "
                            + "invalid branch id returned during execution "
                            + "of CDO.");
                }


                count++;
            }
        } catch (IllegalActionException ex) {
            throw new TerminateProcessException(getName() + ": could not "
                    + "create all branches for CDO.");
        }


        return;
    }

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