-/* Copyright (c) 2010-2023. 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 use simgrid::s4u::this_actor::wait_any() to wait for the first occurring event.
- *
- * As for the other asynchronous examples, the sender initiate all the messages it wants to send and
- * pack the resulting simgrid::s4u::CommPtr objects in a vector. All messages thus occur concurrently.
- *
- * The sender then loops until there is no ongoing communication. Using wait_any() ensures that the sender
- * will notice events as soon as they occur even if it does not follow the order of the container.
- *
- * Here, finalize messages will terminate earlier because their size is 0, so they travel faster than the
- * other messages of this application. As expected, the trace shows that the finalize of worker 1 is
- * processed before 'Message 5' that is sent to worker 0.
- *
- */
-
-#include "simgrid/s4u.hpp"
-#include <cstdlib>
-#include <iostream>
-#include <string>
-namespace sg4 = simgrid::s4u;
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_comm_waitall, "Messages specific for this s4u example");
-
-static void sender(unsigned int messages_count, unsigned int receivers_count, long msg_size)
-{
- if (messages_count == 0 || receivers_count == 0) {
- XBT_WARN("Sender has nothing to do. Bail out!");
- return;
- }
- /* Set in which we store all ongoing communications */
- sg4::ActivitySet pending_comms;
-
- /* Make a vector of the mailboxes to use */
- std::vector<sg4::Mailbox*> mboxes;
- for (unsigned int i = 0; i < receivers_count; i++)
- mboxes.push_back(sg4::Mailbox::by_name("receiver-" + std::to_string(i)));
-
- /* Start dispatching all messages to receivers, in a round robin fashion */
- for (unsigned int i = 0; i < messages_count; i++) {
- std::string msg_content = "Message " + std::to_string(i);
- // Copy the data we send: the 'msg_content' variable is not a stable storage location.
- // It will be destroyed when this actor leaves the loop, ie before the receiver gets it
- auto* payload = new std::string(msg_content);
-
- XBT_INFO("Send '%s' to '%s'", msg_content.c_str(), mboxes[i % receivers_count]->get_cname());
-
- /* Create a communication representing the ongoing communication, and store it in pending_comms */
- sg4::CommPtr comm = mboxes[i % receivers_count]->put_async(payload, msg_size);
- pending_comms.push(comm);
- }
-
- /* Start sending messages to let the workers know that they should stop */
- for (unsigned int i = 0; i < receivers_count; i++) {
- XBT_INFO("Send 'finalize' to 'receiver-%u'", i);
- sg4::CommPtr comm = mboxes[i]->put_async(new std::string("finalize"), 0);
- pending_comms.push(comm);
- }
- XBT_INFO("Done dispatching all messages");
-
- /* Now that all message exchanges were initiated, wait for their completion one by one.
- *
- * Activities are removed in order of termination. It differs from the order of creation, even if it's a bit difficult
- * to see it here.
- */
- while (not pending_comms.empty())
- pending_comms.wait_any();
-
- XBT_INFO("Goodbye now!");
-}
-
-/* Receiver actor expects 1 argument: its ID */
-static void receiver(int id)
-{
- sg4::Mailbox* mbox = sg4::Mailbox::by_name("receiver-" + std::to_string(id));
- XBT_INFO("Wait for my first message");
- for (bool cont = true; cont;) {
- auto received = mbox->get_unique<std::string>();
- XBT_INFO("I got a '%s'.", received->c_str());
- cont = (*received != "finalize"); // If it's a finalize message, we're done
- // Receiving the message was all we were supposed to do
- }
-}
-
-int main(int argc, char* argv[])
-{
- sg4::Engine e(&argc, argv);
-
- e.load_platform(argv[1]);
-
- sg4::Actor::create("sender", e.host_by_name("Tremblay"), sender, 6, 2, 1e6);
- sg4::Actor::create("receiver", e.host_by_name("Fafard"), receiver, 0);
- sg4::Actor::create("receiver", e.host_by_name("Jupiter"), receiver, 1);
-
- e.run();
-
- return 0;
-}