1 /* Copyright (c) 2010-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 /* This example shows how to suspend and resume an asynchronous communication. */
8 #include "simgrid/s4u.hpp"
13 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_comm_wait, "Messages specific for this s4u example");
15 static void sender(int argc, char**)
17 xbt_assert(argc == 1, "Expecting no parameter from the XML deployment file but got %d", argc - 1);
19 simgrid::s4u::Mailbox* mbox = simgrid::s4u::Mailbox::by_name("receiver");
21 // Copy the data we send: the 'msg_content' variable is not a stable storage location.
22 // It will be destroyed when this actor leaves the loop, ie before the receiver gets the data
23 auto* payload = new std::string("Sent message");
25 /* Create a communication representing the ongoing communication and then */
26 simgrid::s4u::CommPtr comm = mbox->put_init(payload, 13194230);
27 XBT_INFO("Suspend the communication before it starts (remaining: %.0f bytes) and wait a second.",
28 comm->get_remaining());
29 simgrid::s4u::this_actor::sleep_for(1);
30 XBT_INFO("Now, start the communication (remaining: %.0f bytes) and wait another second.", comm->get_remaining());
32 simgrid::s4u::this_actor::sleep_for(1);
34 XBT_INFO("There is still %.0f bytes to transfer in this communication. Suspend it for one second.",
35 comm->get_remaining());
37 XBT_INFO("Now there is %.0f bytes to transfer. Resume it and wait for its completion.", comm->get_remaining());
40 XBT_INFO("There is %f bytes to transfer after the communication completion.", comm->get_remaining());
41 XBT_INFO("Suspending a completed activity is a no-op.");
45 static void receiver(int, char**)
47 simgrid::s4u::Mailbox* mbox = simgrid::s4u::Mailbox::by_name("receiver");
48 XBT_INFO("Wait for the message.");
49 auto received = mbox->get_unique<std::string>();
51 XBT_INFO("I got '%s'.", received->c_str());
54 int main(int argc, char* argv[])
56 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
58 simgrid::s4u::Engine e(&argc, argv);
59 e.register_function("sender", &sender);
60 e.register_function("receiver", &receiver);
62 e.load_platform(argv[1]);
63 e.load_deployment(argv[2]);