ptolemy.domains.tdl.kernel
Class LetTask

java.lang.Object
  ptolemy.domains.tdl.kernel.LetTask

public class LetTask
extends java.lang.Object

A TTTask (time triggered task) is an actor with an invocationPeriod and a logical execution time.

Since:

Ptolemy II 8.0

Version:

$Id: LetTask.java 57044 2010-01-27 22:41:05Z cxh $

Author:

Patricia Derler

Field Summary

private Actor	_actor performs the task execution,
private long	_invocationPeriod The invocation period of a task specifies the amount of time that passes before the task needs to be executed again.
private long	_let The logical execution time is the logical time required by the task for execution.
private long	_offset the offset of the task specifies the time the task is first invoked.

Constructor Summary

LetTask(Actor actor, long let, long invocationPeriod, long start)
Create a new LET task.

Method Summary

Actor	getActor() Return the actor representing the task.
long	getInvocationPeriod() Return the invocation period of the task.
long	getLet() Return the LET of the task.
long	getOffset() Return the offset of the task.

Methods inherited from class java.lang.Object

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

Field Detail

_invocationPeriod

private long _invocationPeriod

The invocation period of a task specifies the amount of time that passes before the task needs to be executed again.

_let

private long _let

The logical execution time is the logical time required by the task for execution. At the beginning of the logical execution time, input ports are updated and the task execution is started. At the end of the logical execution time, output ports of the task are updated.

_actor

private Actor _actor

performs the task execution,

_offset

private long _offset

the offset of the task specifies the time the task is first invoked. After this first invocation, the task is invoked periodically.

Constructor Detail

LetTask

public LetTask(Actor actor,
               long let,
               long invocationPeriod,
               long start)

Create a new LET task.

Parameters:

actor - The LET task.

let - The LET of the task.

invocationPeriod - The period of invocation of the task.

start - The start time of the task.

Method Detail

getInvocationPeriod

public long getInvocationPeriod()

Return the invocation period of the task.

Returns:

the incovationPeriod.

getLet

public long getLet()

Return the LET of the task.

Returns:

the LET.

getActor

public Actor getActor()

Return the actor representing the task.

Returns:

the task actor.

getOffset

public long getOffset()

Return the offset of the task.

Returns:

the offset.