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/* Copyright (c) 2006-2025. 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. */
import org.simgrid.s4u.*;
/// Wait on the barrier then leave
class worker extends Actor {
Barrier barrier;
public worker(Barrier barrier) { this.barrier = barrier; }
public void run()
{
Engine.info("Waiting on the barrier");
if (barrier.await())
Engine.info("Bye from the last to enter");
else
Engine.info("Bye");
}
}
/// Spawn actor_count-1 workers and do a barrier with them
class master extends Actor {
int actor_count;
public master(int actor_count) { this.actor_count = actor_count; }
public void run()
{
Engine e = this.get_engine();
Barrier barrier = Barrier.create(actor_count);
Engine.info("Spawning %d workers", actor_count - 1);
for (int i = 0; i < actor_count - 1; i++)
e.host_by_name("Jupiter").add_actor("worker", new worker(barrier));
Engine.info("Waiting on the barrier");
if (barrier.await())
Engine.info("Bye from the last to enter");
else
Engine.info("Bye");
}
}
public class synchro_barrier {
public static void main(String[] args)
{
Engine e = new Engine(args);
// Parameter: Number of actors in the barrier
if (args.length < 1)
Engine.die("Usage: synchro_barrier <actor-count>\n");
int actor_count = Integer.valueOf(args[0]);
if (actor_count <= 0)
Engine.die("<actor-count> must be greater than 0");
e.load_platform(args.length >= 2 ? args[1] : "../platforms/two_hosts.xml");
e.host_by_name("Tremblay").add_actor("master", new master(actor_count));
e.run();
// The following call is useless in your code, but our continuous integration uses it to track memleaks
e.force_garbage_collection();
}
}
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