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/* Copyright (c) 2007-2025. 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. */
#include <simgrid/s4u.hpp>
namespace sg4 = simgrid::s4u;
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_app_pingpong, "Messages specific for this s4u example");
static void pinger(sg4::Mailbox* mailbox_in, sg4::Mailbox* mailbox_out)
{
XBT_INFO("Ping from mailbox %s to mailbox %s", mailbox_in->get_name().c_str(), mailbox_out->get_name().c_str());
/* - Do the ping with a 1-Byte payload (latency bound) ... */
auto* payload = new double(sg4::Engine::get_clock());
mailbox_out->put(payload, 1);
/* - ... then wait for the (large) pong */
auto sender_time = mailbox_in->get_unique<double>();
double communication_time = sg4::Engine::get_clock() - *sender_time;
XBT_INFO("Payload received : large communication (bandwidth bound)");
XBT_INFO("Pong time (bandwidth bound): %.3f", communication_time);
}
static void ponger(sg4::Mailbox* mailbox_in, sg4::Mailbox* mailbox_out)
{
XBT_INFO("Pong from mailbox %s to mailbox %s", mailbox_in->get_name().c_str(), mailbox_out->get_name().c_str());
/* - Receive the (small) ping first ....*/
auto sender_time = mailbox_in->get_unique<double>();
double communication_time = sg4::Engine::get_clock() - *sender_time;
XBT_INFO("Payload received : small communication (latency bound)");
XBT_INFO("Ping time (latency bound) %f", communication_time);
/* - ... Then send a 1GB pong back (bandwidth bound) */
auto* payload = new double(sg4::Engine::get_clock());
XBT_INFO("payload = %.3f", *payload);
mailbox_out->put(payload, 1e9);
}
int main(int argc, char* argv[])
{
sg4::Engine e(&argc, argv);
e.load_platform(argv[1]);
sg4::Mailbox* mb1 = e.mailbox_by_name_or_create("Mailbox 1");
sg4::Mailbox* mb2 = e.mailbox_by_name_or_create("Mailbox 2");
e.host_by_name("Tremblay")->add_actor("pinger", pinger, mb1, mb2);
e.host_by_name("Jupiter")->add_actor("ponger", ponger, mb2, mb1);
e.run();
XBT_INFO("Total simulation time: %.3f", e.get_clock());
return 0;
}
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