public void run() {
try {
while (!Thread.interrupted()) {
// Blocks until chassis is available:
car = chassisQueue.take();
// Hire robots to perform work:
robotPool.hire(EngineRobot.class, this);
robotPool.hire(DriveTrainRobot.class, this);
robotPool.hire(WheelRobot.class, this);
barrier.await(); // Until the robots finish
// Put car into finishingQueue for further work
finishingQueue.put(car);
}
} catch (InterruptedException e) {
print("Exiting Assembler via interrupt");
} catch (BrokenBarrierException e) {
// This one we want to know about
throw new RuntimeException(e);
}
print("Assembler off");
}
public synchronized void hire(Class<? extends Robot> robotType, Assembler d)
throws InterruptedException {
for (Robot r : pool)
if (r.getClass().equals(robotType)) {
pool.remove(r);
r.assignAssembler(d);
r.engage(); // Power it up to do the task
return;
}
wait(); // None available
hire(robotType, d); // Try again, recursively
}
