-/* 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 block on the completion of a set of communications.
- *
- * 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 blocks until all ongoing communication terminate, using simgrid::s4u::Comm::wait_all()
- *
- */
-
-#include "simgrid/s4u.hpp"
-#include <cstdlib>
-#include <iostream>
-#include <string>
-namespace sg4 = simgrid::s4u;
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_async_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;
- }
- // sphinx-doc: init-begin (this line helps the doc to build; ignore it)
- /* Vector in which we store all ongoing communications */
- std::vector<sg4::CommPtr> 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)));
- // sphinx-doc: init-end
-
- /* 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_back(comm);
- }
-
- /* Start sending messages to let the workers know that they should stop */ // sphinx-doc: put-begin
- 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_back(comm);
- }
- XBT_INFO("Done dispatching all messages");
-
- /* Now that all message exchanges were initiated, wait for their completion in one single call */
- sg4::Comm::wait_all(pending_comms);
- // sphinx-doc: put-end
-
- 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, 5, 2, 1e6);
- sg4::Actor::create("receiver", e.host_by_name("Ruby"), receiver, 0);
- sg4::Actor::create("receiver", e.host_by_name("Perl"), receiver, 1);
-
- e.run();
-
- return 0;
-}