+++ /dev/null
-/* Copyright (c) 2017-2021. 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. */
-
-/* There is two very different ways of being informed when an actor exits.
- *
- * The this_actor::on_exit() function allows one to register a function to be
- * executed when this very actor exits. The registered function will run
- * when this actor terminates (either because its main function returns, or
- * because it's killed in any way). No simcall are allowed here: your actor
- * is dead already, so it cannot interact with its environment in any way
- * (network, executions, disks, etc).
- *
- * Usually, the functions registered in this_actor::on_exit() are in charge
- * of releasing any memory allocated by the actor during its execution.
- *
- * The other way of getting informed when an actor terminates is to connect a
- * function in the Actor::on_termination signal, that is shared between
- * all actors. Callbacks to this signal are executed for each terminating
- * actors, no matter what. This is useful in many cases, in particular
- * when developing SimGrid plugins.
- *
- * Finally, you can attach callbacks to the Actor::on_destruction signal.
- * It is also shared between all actors, and gets fired when the actors
- * are destroyed. A delay is possible between the termination of an actor
- * (ie, when it terminates executing its code) and its destruction (ie,
- * when it is not referenced anywhere in the simulation and can be collected).
- *
- * In both cases, you can stack more than one callback in the signal.
- * They will all be executed in the registration order.
- */
-
-#include <simgrid/s4u.hpp>
-namespace sg4 = simgrid::s4u;
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor_exiting, "Messages specific for this s4u example");
-
-static void actor_a()
-{
- // Register a lambda function to be executed once it stops
- sg4::this_actor::on_exit([](bool /*failed*/) { XBT_INFO("I stop now"); });
-
- sg4::this_actor::sleep_for(1);
-}
-
-static void actor_b()
-{
- sg4::this_actor::sleep_for(2);
-}
-
-static void actor_c()
-{
- // Register a lambda function to be executed once it stops
- sg4::this_actor::on_exit([](bool failed) {
- if (failed) {
- XBT_INFO("I was killed!");
- if (xbt_log_no_loc)
- XBT_INFO("The backtrace would be displayed here if --log=no_loc would not have been passed");
- else
- xbt_backtrace_display_current();
- } else
- XBT_INFO("Exiting gracefully.");
- });
-
- sg4::this_actor::sleep_for(3);
- XBT_INFO("And now, induce a deadlock by waiting for a message that will never come\n\n");
- sg4::Mailbox::by_name("nobody")->get<void>();
- xbt_die("Receiving is not supposed to succeed when nobody is sending");
-}
-
-int main(int argc, char* argv[])
-{
- sg4::Engine e(&argc, argv);
- xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/small_platform.xml\n", argv[0], argv[0]);
-
- e.load_platform(argv[1]); /* - Load the platform description */
-
- /* Register a callback in the Actor::on_termination signal. It will be called for every terminated actors */
- sg4::Actor::on_termination.connect(
- [](sg4::Actor const& actor) { XBT_INFO("Actor %s terminates now", actor.get_cname()); });
- /* Register a callback in the Actor::on_destruction signal. It will be called for every destructed actors */
- sg4::Actor::on_destruction.connect(
- [](sg4::Actor const& actor) { XBT_INFO("Actor %s gets destroyed now", actor.get_cname()); });
-
- /* Create some actors */
- sg4::Actor::create("A", sg4::Host::by_name("Tremblay"), actor_a);
- sg4::Actor::create("B", sg4::Host::by_name("Fafard"), actor_b);
- sg4::Actor::create("C", sg4::Host::by_name("Ginette"), actor_c);
-
- e.run(); /* - Run the simulation */
-
- return 0;
-}
