+/* Copyright (c) 2010-2019. 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. */
+
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
+
+static void worker()
+{
+ simgrid::s4u::Host* other_host = simgrid::s4u::Host::by_name("Fafard");
+ unsigned int first =
+ simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("First callback"); });
+ unsigned int second =
+ simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("Second callback"); });
+ unsigned int third =
+ simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("Third callback"); });
+
+ XBT_INFO("Turning off: Three callbacks should be triggered");
+ other_host->turn_off();
+
+ XBT_INFO("Disconnect the second callback");
+ simgrid::s4u::Host::on_state_change.disconnect(second);
+
+ XBT_INFO("Turning on: Two callbacks should be triggered");
+ other_host->turn_on();
+
+ XBT_INFO("Disconnect the first callback");
+ simgrid::s4u::Host::on_state_change.disconnect(first);
+
+ XBT_INFO("Turning off: One callback should be triggered");
+ other_host->turn_off();
+
+ XBT_INFO("Disconnect the third callback");
+ simgrid::s4u::Host::on_state_change.disconnect(third);
+ XBT_INFO("Turning on: No more callbacks");
+ other_host->turn_on();
+}
+
+int main(int argc, char* argv[])
+{
+ simgrid::s4u::Engine e(&argc, argv);
+ e.load_platform(argv[1]);
+
+ simgrid::s4u::Actor::create("worker", simgrid::s4u::Host::by_name("Tremblay"), worker);
+
+ e.run();
+
+ return 0;
+}
