JAVA-BASED REAL-TIME PROGRAMMING

4. Exercises and Labs
your washing program subclasses. The washing program is implemented in
the abstract method wash called from the run method.
public abstract class WashingProgram extends RTThread {
/**
* @param mach The washing machine to control
* @param speed Simulation speed
* @param tempController The TemperatureController to use
* @param waterController The WaterController to use
* @param spinController The SpinController to use
*/
protected WashingProgram(AbstractWashingMachine mach ,
double speed ,
TemperatureController tempController ,
WaterController waterController ,
SpinController spinController) {
super();
}
myMachine = mach;
mySpeed = speed;
myTempController = tempController;
myWaterController = waterController;
mySpinController = spinController;
/**
* This run() method does two things.
*
* Call the wash() method implemented in the subclass.
* If wash() was interrupted , turn all off machinery.
*
*/
public void run() {
boolean wasInterrupted = false;
try {
wash();
}
catch (InterruptedException e) {
wasInterrupted = true;
}
catch(RTInterrupted e) { // Thrown by semaphores
wasInterrupted = true;
}
}
if (wasInterrupted) {
System.out.println("Washing program aborted.");
myTempController.putEvent(
new TemperatureEvent(this , TemperatureEvent.TEMP_IDLE , 0.0));
myWaterController.putEvent(
new WaterEvent(this , WaterEvent.WATER_IDLE , 0.0));
mySpinController.putEvent(
new SpinEvent(this , SpinEvent.SPIN_OFF));
}
/**
* Called by run() to perform the actual washing stuff.
* Should be implemented by the subclass. Does not need to
* catch InterruptedException.
*/
abstract protected void wash() throws InterruptedException;
128 2012-08-29 16:05