examples/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.HostFailureException;
  10 import org.simgrid.msg.Msg;
  11 import org.simgrid.msg.Task;
  12 import org.simgrid.msg.TaskCancelledException;
  13 import org.simgrid.msg.TimeoutException;
  14 import org.simgrid.msg.TransferFailureException;
  15 import org.simgrid.msg.Process;
  16
  17 public class Slave extends Process {
  18         public void main(String[] args) throws TransferFailureException, HostFailureException, TimeoutException {
  19                 if (args.length < 1) {
  20                         Msg.info("Slave needs 1 argument (its number)");
  21                         System.exit(1);
  22                 }
  23
  24                 int num = Integer.valueOf(args[0]).intValue();
  25
  26                 Comm comm = null;
  27                 boolean slaveFinished = false;
  28                 while(!slaveFinished) {
  29                         try
  30                         {
  31                                 if (comm == null) {
  32                                         Msg.info("Receiving on 'slave_" + num + "'");
  33                                         comm = Task.irecv("slave_" + num);
  34                                 }
  35                                 else {
  36                                         if (comm.test()) {
  37                                                 Task task = comm.getTask();
  38
  39                                                 if (task instanceof FinalizeTask) {
  40                                                         comm = null;
  41                                                         break;
  42                                                 }
  43                                                 Msg.info("Received a task");
  44                                                 Msg.info("Received \"" + task.getName() +  "\". Processing it.");
  45                                                 try {
  46                                                         task.execute();
  47                                                 } catch (TaskCancelledException e) {
  48
  49                                                 }
  50                                                 comm = null;
  51                                         }
  52                                         else {
  53                                                 waitFor(1);
  54                                         }
  55                                 }
  56                         }
  57                         catch (Exception e) {
  58                                 e.printStackTrace();
  59                         }
  60                 }
  61                 Msg.info("Received Finalize. I'm done. See you!");
  62                 waitFor(20);
  63         }
  64 }