-/*
- * 2012. The SimGrid Team. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package.
- */
+/* Copyright (c) 2012-2014, 2016. The SimGrid Team.
+ * All rights reserved. */
-package mutualExclusion.centralized;
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+package mutualExclusion;
import java.util.LinkedList;
-import org.simgrid.msg.Host;
import org.simgrid.msg.Msg;
-import org.simgrid.msg.MsgException;
+import org.simgrid.msg.Host;
import org.simgrid.msg.Task;
import org.simgrid.msg.Process;
+import org.simgrid.msg.MsgException;
+public class Coordinator extends Process {
+ public Coordinator(Host host, String name, String[]args) {
+ super(host,name,args);
+ }
+ LinkedList<RequestTask> waitingQueue=new LinkedList<RequestTask>();
+ int CsToServe;
-public class Coordinator extends Process {
- public Coordinator(Host host, String name, String[]args) {
- super(host,name,args);
- }
- LinkedList<RequestTask> waitingQueue=new LinkedList<RequestTask>();
- int CsToServe;
-
- public void main(String[] args) throws MsgException {
- CsToServe = Integer.parseInt(args[0]);
- Task task;
- while (CsToServe >0) {
- task = Task.receive("coordinator");
- if (task instanceof RequestTask) {
- RequestTask t = (RequestTask) task;
- if (waitingQueue.isEmpty()) {
- Msg.info("Got a request from "+t.from+". Queue empty: grant it");
- GrantTask tosend = new GrantTask();
- tosend.send(t.from);
- } else {
- waitingQueue.addFirst(t);
- }
- } else if (task instanceof ReleaseTask) {
- if (!waitingQueue.isEmpty()) {
- RequestTask req = waitingQueue.removeLast();
- GrantTask tosend = new GrantTask();
- tosend.send(req.from);
- }
- CsToServe--;
- if (waitingQueue.isEmpty() && CsToServe==0) {
- Msg.info("we should shutdown the simulation now");
- }
- }
- }
- }
+ public void main(String[] args) throws MsgException {
+ CsToServe = Integer.parseInt(args[0]);
+ Task task;
+ while (CsToServe >0) {
+ task = Task.receive("coordinator");
+ if (task instanceof RequestTask) {
+ RequestTask t = (RequestTask) task;
+ if (waitingQueue.isEmpty()) {
+ Msg.info("Got a request from "+t.from+". Queue empty: grant it");
+ GrantTask tosend = new GrantTask();
+ tosend.send(t.from);
+ } else {
+ waitingQueue.addFirst(t);
+ }
+ } else if (task instanceof ReleaseTask) {
+ if (!waitingQueue.isEmpty()) {
+ RequestTask req = waitingQueue.removeLast();
+ GrantTask tosend = new GrantTask();
+ tosend.send(req.from);
+ }
+ CsToServe--;
+ if (waitingQueue.isEmpty() && CsToServe==0) {
+ Msg.info("we should shutdown the simulation now");
+ }
+ }
+ }
+ }
}
