examples/java/async/Slave.java

   1 /* Copyright (c) 2006-2007, 2010, 2013-2014. The SimGrid Team.
   2  * 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.Msg;
  12 import org.simgrid.msg.Process;
  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
  18 public class Slave extends Process {
  19         public Slave(Host host, String name, String[]args) {
  20                 super(host,name,args);
  21         }
  22         public void main(String[] args) throws TransferFailureException, HostFailureException, TimeoutException {
  23                 if (args.length < 1) {
  24                         Msg.info("Slave needs 1 argument (its number)");
  25                         System.exit(1);
  26                 }
  27
  28                 int num = Integer.valueOf(args[0]).intValue();
  29                 Comm comm = null;
  30                 boolean slaveFinished = false;
  31                 while(!slaveFinished) {
  32                         try
  33                         {
  34                                 if (comm == null) {
  35                                         Msg.info("Receiving on 'slave_" + num + "'");
  36                                         comm = Task.irecv("slave_" + num);
  37                                 }
  38                                 else {
  39                                         if (comm.test()) {
  40                                                 Task task = comm.getTask();
  41
  42                                                 if (task instanceof FinalizeTask) {
  43                                                         comm = null;
  44                                                         break;
  45                                                 }
  46                                                 Msg.info("Received a task");
  47                                                 Msg.info("Received \"" + task.getName() +  "\". Processing it.");
  48                                                 try {
  49                                                         task.execute();
  50                                                 } catch (TaskCancelledException e) {
  51
  52                                                 }
  53                                                 comm = null;
  54                                         }
  55                                         else {
  56                                                 waitFor(1);
  57                                         }
  58                                 }
  59                         }
  60                         catch (Exception e) {
  61                                 e.printStackTrace();
  62                         }
  63                 }
  64                 Msg.info("Received Finalize. I'm done. See you!");
  65                 waitFor(20);
  66         }
  67 }