edu.penn.rtg.schedulingapp.algo

Class DMSchedulability_arinc

java.lang.Object

edu.penn.rtg.schedulingapp.algo.DMSchedulability_arinc

public class DMSchedulability_arinc
extends java.lang.Object

Compute optimal bandwidth and deadline (DM, EDP). this class has two main function

1. Compute optimal bandwidth and deadline
Using schedulability test, it compute optimal bandwidth and deadline

2. transform a resource model into a single task

supported resource model : ARINC, EDP
supported scheduling algorithm : DM

Since:

1.0

Version:

1.0

Author:

Constructor Summary

Constructors

Constructor and Description
DMSchedulability_arinc(SchedulingComponent C, int resPeriod) Constructor It set target component and target period

Method Summary

Methods

Modifier and Type	Method and Description
double	computeDeadline(double demand, double time, double theta)
void	computeUtilization()
double	getBandwidth() It calculates optimal bandwidth of given component and given period by using schedulability test.
double	getDeadline(double bandwidth) It calculates optimal bandwidth of given component and given period by using schedulability test.
double	getTheta(double demand, double time)

Methods inherited from class java.lang.Object

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

Constructor Detail

DMSchedulability_arinc

public DMSchedulability_arinc(SchedulingComponent C,
                      int resPeriod)
                       throws java.lang.Exception

Constructor It set target component and target period

Parameters:

C - target component

period - given period

Throws:

java.lang.Exception

Method Detail

getBandwidth

public double getBandwidth()
                    throws java.lang.Exception

It calculates optimal bandwidth of given component and given period by using schedulability test.

Returns:

optimal bandwidth.

Throws:

java.lang.Exception

See Also:

none

getTheta

public double getTheta(double demand,
              double time)

computeUtilization

public void computeUtilization()

getDeadline

public double getDeadline(double bandwidth)
                   throws java.lang.Exception

It calculates optimal bandwidth of given component and given period by using schedulability test.

Parameters:

theta - execution time of given component.

Returns:

optimal bandwidth.

Throws:

java.lang.Exception

See Also:

none

computeDeadline

public double computeDeadline(double demand,
                     double time,
                     double theta)