examples/java/async/Slave.java

   1 /*
   2  * Copyright 2006,2007,2010. The SimGrid Team. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package.
   6  */
   7 package async;
   8 import org.simgrid.msg.Comm;
   9 import org.simgrid.msg.Host;
  10 import org.simgrid.msg.HostFailureException;
  11 import org.simgrid.msg.HostNotFoundException;
  12 import org.simgrid.msg.Msg;
  13 import org.simgrid.msg.Task;
  14 import org.simgrid.msg.TaskCancelledException;
  15 import org.simgrid.msg.TimeoutException;
  16 import org.simgrid.msg.TransferFailureException;
  17 import org.simgrid.msg.Process;
  18
  19 public class Slave extends Process {
  20         public Slave(Host host, String name, String[]args) {
  21                 super(host,name,args);
  22         }
  23         public void main(String[] args) throws TransferFailureException, HostFailureException, TimeoutException {
  24                 if (args.length < 1) {
  25                         Msg.info("Slave needs 1 argument (its number)");
  26                         System.exit(1);
  27                 }
  28
  29                 int num = Integer.valueOf(args[0]).intValue();
  30                 Comm comm = null;
  31                 boolean slaveFinished = false;
  32                 while(!slaveFinished) {
  33                         try
  34                         {
  35                                 if (comm == null) {
  36                                         Msg.info("Receiving on 'slave_" + num + "'");
  37                                         comm = Task.irecv("slave_" + num);
  38                                 }
  39                                 else {
  40                                         if (comm.test()) {
  41                                                 Task task = comm.getTask();
  42
  43                                                 if (task instanceof FinalizeTask) {
  44                                                         comm = null;
  45                                                         break;
  46                                                 }
  47                                                 Msg.info("Received a task");
  48                                                 Msg.info("Received \"" + task.getName() +  "\". Processing it.");
  49                                                 try {
  50                                                         task.execute();
  51                                                 } catch (TaskCancelledException e) {
  52
  53                                                 }
  54                                                 comm = null;
  55                                         }
  56                                         else {
  57                                                 waitFor(1);
  58                                         }
  59                                 }
  60                         }
  61                         catch (Exception e) {
  62                                 e.printStackTrace();
  63                         }
  64                 }
  65                 Msg.info("Received Finalize. I'm done. See you!");
  66                 waitFor(20);
  67         }
  68 }