Java Reference
In-Depth Information
and the temporal parameters as defined in Figure 3.5. Two more member
variables are needed to store the values of the activation and termination
times corresponding to the best performance of the scheduling algorithm.
The constructor initializes the temporal parameters and computes the
activity's duration. During the execution of the scheduling algorithm, only
the activation time and the termination time will be updated. The
reset()
method initializes the activation time and termination time before any new
run of the scheduling algorithm.
package
scheduler;
public
class Activity {
private int
id
#
0;
private
String name;
private double
releaseTime;
private double
activationTime;
private double
terminationTime;
private double
dueTime;
private double
duration;
private double
tempActivationTime
#
0.0;
private double
tempTerminationTime
#
0.0;
public
Activity(String name,
double
r,
double
a,
double
t,
double
d) {
this
.name
#
name;
this
.releaseTime
#
r;
this
.activationTime
#
a;
this
.terminationTime
#
t;
this
.dueTime
#
d;
this
.duration
#
t - a;
}
public int
getID() {
return
id; }
public
String getName() {
return
name; }
public double
getActivation() {
return
activationTime; }
public double
getRelease() {
return
releaseTime; }
public double
getTermination() {
return
terminationTime; }
public double
getDueTime() {
return
dueTime; }
public double
getDuration() {
return
duration; }
public void
setID(
int
id) {
this
.id
#
id; }
// The next two methods set the values of release time and
// due date. If necessary, they change the values of
// termination time and activation time consistently
public void
setReleaseTime(
double
time) {
if
(time < 0.0)
return
;
if
(time < activationTime
||
(time
!
duration) < dueTime)
releaseTime
#
time;
if
(releaseTime > activationTime) {
