private int enqueueToPlace() throws Exception {
DistributionServer.logging("Philosoph-" + this.getIndex() + " enqueues.");
Place minPlace = table.getPlace(distributedClient.getStartPlace());
DistributionServer.logging("Philosoph-" + this.getIndex() + " Has min place");
// Try enqueue local and get shortest queue
for (Place place : table.getPlaces()) {
if (place.tryEnqueue()) {
System.out.println(this + " is enqueued at local place " + place.getIndex());
return place.getIndex();
}
if (place.getQueueLength() < minPlace.getQueueLength()) {
minPlace = place;
}
}
DistributionServer.logging("Philosoph-" + this.getIndex() + " tried enqueue locally");
// Try enqueue remote
List<Client> clients = distributedClient.getClients();
DistributionServer.logging("Philosoph-" + this.getIndex() + " has clinets");
for (Client client : clients) {
int placeIndex = client.tryEnqueue();
if (placeIndex >= 0) {
System.out.println(this + " is enqueued at remote place " + placeIndex);
return placeIndex;
}
}
DistributionServer.logging("Philosoph-" + this.getIndex() + " tried enqueue remote");
// Enqueue at local place with shortest queue
minPlace.enqueue();
System.out.println(this + " is enqueued at local minPlace " + minPlace.getIndex());
return minPlace.getIndex();
}
@Override
public void run() {
try {
// Philo life
while (distributedClient.shouldRun()) {
for (int eatCounter = 0; eatCounter < 3; eatCounter++) {
thinking();
if (willBePunished) {
DistributionServer.logging(this + " starts punishment");
Thread.sleep(DistributedClient.PENALTY_TIME);
DistributionServer.logging(this + " punishment over");
willBePunished = false;
}
int placeIndex = enqueueToPlace();
eating(placeIndex);
}
sleeping();
}
} catch (RemoteException e) {
DistributionServer.logging("RemoteException at Philosoph-" + getIndex(), e);
} catch (Exception e) {
DistributionServer.logging("Exception at Philosoph-" + getIndex(), e);
}
stopped();
}
private void eating(int placeIndex) throws Exception {
DistributionServer.logging(this + " goes eating");
DistributionServer.logging(this + " took place " + placeIndex);
// Even philos begin with "left fork", odd with "right fork"
if (placeIndex % 2 == 0) {
distributedClient.takeFork((placeIndex + 1) % distributedClient.getPlaceCount());
DistributionServer.logging(
this + " has fork " + (placeIndex + 1) % distributedClient.getPlaceCount());
distributedClient.takeFork(placeIndex);
DistributionServer.logging(this + " has fork " + placeIndex);
} else {
distributedClient.takeFork(placeIndex);
DistributionServer.logging(this + " has fork " + placeIndex);
distributedClient.takeFork((placeIndex + 1) % distributedClient.getPlaceCount());
DistributionServer.logging(
this + " has fork " + (placeIndex + 1) % distributedClient.getPlaceCount());
}
DistributionServer.logging(this + " goes eating");
// schbaggeddi schbaggeddi schbaggeddi mmmmmmhhhhhh schbaggeddi mmmmmmhhhhhh schbaggeddi
// schbaggeddi mmmmmmhhhhhh schbaggeddi schbaggeddi schbaggeddi schbaggeddi mmmmmmhhhhhh
Thread.sleep(DistributedClient.EATING_TIME);
this.eatingCounter++;
DistributionServer.logging(this + " passes forks back");
distributedClient.passBackFork(placeIndex);
distributedClient.passBackFork((placeIndex + 1) % distributedClient.getPlaceCount());
DistributionServer.logging(this + " goes thinking");
distributedClient.leavePlace(placeIndex);
}
private void sleeping() throws InterruptedException {
DistributionServer.logging(this + " goes sleeping");
Thread.sleep(DistributedClient.SLEEPING_TIME);
}
private void thinking() throws InterruptedException {
DistributionServer.logging(this + " goes thinking");
Thread.sleep(DistributedClient.THINKING_TIME);
}
private void stopped() {
DistributionServer.logging(this + " stopped");
this.distributedClient.stopped();
}