ptolemy.apps.hardrealtime

Class Job

java.lang.Object

ptolemy.apps.hardrealtime.Job

public class Job
extends java.lang.Object

A job represents a block of execution demand on the processing units of a hard real-time system. It is characterized by an execution time, which is the number of units of time that the job needs to be executed, an arrival time, which is the time when the job became available to the processor for processing, and a deadline, which the time by which the processing of the job has to be completed.

Version:

$Id$

Author:

Christos Stergiou

Pt.AcceptedRating:

Red (chster)

Pt.ProposedRating:

Red (chster)

Constructor Summary

Constructors

Constructor and Description
Job(Director director, double relativeDeadline, double executionTime, Actor task) Construct a new job released by a task, with an execution time, a relative deadline, and release time equal to the current time of a director.
Job(Director director, double relativeDeadline, double executionTime, Actor task, Actor parentTask) Construct a new job released by a task contained in a parent task, with an execution time, a relative deadline, and release time equal to the current time of a director.

Method Summary

Modifier and Type	Method and Description
void	executeFor(Time time) Execute the job for an amount of time.
Time	getAbsoluteDeadline() Return the absolute deadline of the job.
Actor	getParentTask() Return the parent of the task that released the job.
Time	getRemainingTime() Return the time the job still needs to execute for to complete its execution.
Time	getStartTime() Return the time that the job was released.
Actor	getTask() Return the task that released the job.

Methods inherited from class java.lang.Object

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

Constructor Detail

Job

public Job(Director director,
           double relativeDeadline,
           double executionTime,
           Actor task)
    throws IllegalActionException

Construct a new job released by a task, with an execution time, a relative deadline, and release time equal to the current time of a director.

Parameters:

director - The director whose current time is the release time of the job.

relativeDeadline - The relative deadline of the job.

executionTime - The execution time of the job.

task - The task that released the job.

Throws:

IllegalActionException - If the Time constructor throws it.

Job

public Job(Director director,
           double relativeDeadline,
           double executionTime,
           Actor task,
           Actor parentTask)
    throws IllegalActionException

Construct a new job released by a task contained in a parent task, with an execution time, a relative deadline, and release time equal to the current time of a director.

Parameters:

director - The director whose current time is the release time of the job.

relativeDeadline - The relative deadline of the job.

executionTime - The execution time of the job.

task - The task that released the job.

parentTask - The parent of the task that released the job.

Throws:

IllegalActionException - If the Time constructor throws it.

Method Detail

executeFor

public void executeFor(Time time)

Execute the job for an amount of time.

Parameters:

time - The time to execute the job for.

getAbsoluteDeadline

public Time getAbsoluteDeadline()

Return the absolute deadline of the job.

Returns:

The absolute deadline.

getParentTask

public Actor getParentTask()

Return the parent of the task that released the job.

Returns:

The parent of the task that released the job.

getRemainingTime

public Time getRemainingTime()

Return the time the job still needs to execute for to complete its execution.

Returns:

The remaining execution time.

getStartTime

public Time getStartTime()

Return the time that the job was released.

Returns:

The time the job was released.

getTask

public Actor getTask()

Return the task that released the job.

Returns:

The task that released the job.