+++ /dev/null
-/* Copyright (c) 2006-2018. 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. */
-
-/* This example shows how to declare and start your actors.
- *
- * The first step is to declare the code of your actors (what they do exactly does not matter to this example) and then
- * you ask SimGrid to start your actors. There is three ways of doing so:
- * - Directly, by instantiating your actor as parameter to Actor::create()
- * - By first registering your actors before instantiating it;
- * - Through the deployment file.
- *
- * This example shows all these solutions, even if you obviously should use only one of these solutions to start your
- * actors. The most advised solution is to use a deployment file, as it creates a clear separation between your
- * application and the settings to test it. This is a better scientific methodology. Actually, starting an actor with
- * Actor::create() is mostly useful to start an actor from another actor.
- */
-
-#include <simgrid/s4u.hpp>
-#include <string>
-
-// This declares a logging channel so that XBT_INFO can be used later
-XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor_create, "The logging channel used in this example");
-
-/* Our first class of actors is simply implemented with a function, that takes a single string as parameter.
- *
- * Later, this actor class is instantiated within the simulation.
- */
-static void receiver(std::string mailbox_name)
-{
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::by_name(mailbox_name);
-
- XBT_INFO("Hello s4u, I'm ready to get any message you'd want on %s", mailbox->get_cname());
-
- std::string* msg1 = static_cast<std::string*>(mailbox->get());
- std::string* msg2 = static_cast<std::string*>(mailbox->get());
- std::string* msg3 = static_cast<std::string*>(mailbox->get());
- XBT_INFO("I received '%s', '%s' and '%s'", msg1->c_str(), msg2->c_str(), msg3->c_str());
- delete msg1;
- delete msg2;
- delete msg3;
- XBT_INFO("I'm done. See you.");
-}
-
-/* Our second class of actors is also a function */
-static int forwarder(int argc, char** argv)
-{
- xbt_assert(argc >= 3, "Actor forwarder requires 2 parameters, but got only %d", argc - 1);
- simgrid::s4u::MailboxPtr in = simgrid::s4u::Mailbox::by_name(argv[1]);
- simgrid::s4u::MailboxPtr out = simgrid::s4u::Mailbox::by_name(argv[2]);
- std::string* msg = static_cast<std::string*>(in->get());
- XBT_INFO("Forward '%s'.", msg->c_str());
- out->put(msg, msg->size());
- return 0;
-}
-
-/* Declares a third class of actors which sends a message to the mailbox 'mb42'.
- * The sent message is what was passed as parameter on creation (or 'GaBuZoMeu' by default)
- *
- * Later, this actor class is instantiated twice in the simulation.
- */
-class Sender {
-public:
- std::string mbox = "mb42";
- std::string msg = "GaBuZoMeu";
- explicit Sender() = default; /* Sending the default message */
- explicit Sender(std::string arg) : msg(arg) { /* Sending the specified message */}
- explicit Sender(std::vector<std::string> args)
- {
- /* This constructor is used when we start the actor from the deployment file */
- /* args[0] is the actor's name, so the first parameter is args[1] */
-
- xbt_assert(args.size() >= 3, "The sender is expecting 2 parameters from the deployment file but got %zu",
- args.size() - 1);
- msg = args[1];
- mbox = args[2];
- }
- void operator()() /* This is the main code of the actor */
- {
- XBT_INFO("Hello s4u, I have something to send");
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::by_name(mbox);
-
- mailbox->put(new std::string(msg), msg.size());
- XBT_INFO("I'm done. See you.");
- }
-};
-
-/* Here comes the main function of your program */
-int main(int argc, char** argv)
-{
- /* When your program starts, you have to first start a new simulation engine, as follows */
- simgrid::s4u::Engine e(&argc, argv);
-
- /* Then you should load a platform file, describing your simulated platform */
- e.load_platform("../../platforms/small_platform.xml");
-
- /* And now you have to ask SimGrid to actually start your actors.
- *
- * The easiest way to do so is to implement the behavior of your actor in a single function,
- * as we do here for the receiver actors. This function can take any kind of parameters, as
- * long as the last parameters of Actor::create() match what your function expects.
- */
- simgrid::s4u::Actor::create("receiver", simgrid::s4u::Host::by_name("Fafard"), &receiver, "mb42");
-
- /* If your actor is getting more complex, you probably want to implement it as a class instead,
- * as we do here for the sender actors. The main behavior goes into operator()() of the class.
- *
- * You can then directly start your actor, as follows: */
- simgrid::s4u::Actor::create("sender1", simgrid::s4u::Host::by_name("Tremblay"), Sender());
- /* If you want to pass parameters to your class, that's very easy: just use your constructors */
- simgrid::s4u::Actor::create("sender2", simgrid::s4u::Host::by_name("Jupiter"), Sender("GloubiBoulga"));
-
- /* But starting actors directly is considered as a bad experimental habit, since it ties the code
- * you want to test with the experimental scenario. Starting your actors from an external deployment
- * file in XML ensures that you can test your code in several scenarios without changing the code itself.
- *
- * For that, you first need to register your function or your actor as follows.
- * Actor classes must have a (std::vector<std::string>) constructor,
- * and actor functions must be of type int(*)(int argc, char**argv). */
- e.register_actor<Sender>("sender"); // The sender class is passed as a template parameter here
- e.register_function("forwarder", &forwarder);
- /* Once actors and functions are registered, just load the deployment file */
- e.load_deployment("s4u-actor-create_d.xml");
-
- /* Once every actors are started in the engine, the simulation can start */
- e.run();
-
- /* Once the simulation is done, the program is ended */
- return 0;
-}
