+/* Copyright (c) 2010-2020. 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 suspend and resume an asynchronous communication. */
+
+#include "simgrid/s4u.hpp"
+#include <cstdlib>
+#include <iostream>
+#include <string>
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_comm_wait, "Messages specific for this s4u example");
+
+static void sender(int argc, char**)
+{
+ xbt_assert(argc == 1, "Expecting no parameter from the XML deployment file but got %d", argc - 1);
+
+ simgrid::s4u::Mailbox* mbox = simgrid::s4u::Mailbox::by_name("receiver");
+
+ // 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 the data
+ std::string* payload = new std::string("Sent message");
+
+ /* Create a communication representing the ongoing communication and then */
+ simgrid::s4u::CommPtr comm = mbox->put_init(payload, 13194230);
+ XBT_INFO("Suspend the communication before it starts (remaining: %.0f bytes) and wait a second.",
+ comm->get_remaining());
+ simgrid::s4u::this_actor::sleep_for(1);
+ XBT_INFO("Now, start the communication (remaining: %.0f bytes) and wait another second.", comm->get_remaining());
+ comm->start();
+ simgrid::s4u::this_actor::sleep_for(1);
+
+ XBT_INFO("There is still %.0f bytes to transfer in this communication. Suspend it for one second.",
+ comm->get_remaining());
+ comm->suspend();
+ XBT_INFO("Now there is %.0f bytes to transfer. Resume it and wait for its completion.", comm->get_remaining());
+ comm->resume();
+ comm->wait();
+ XBT_INFO("There is %f bytes to transfer after the communication completion.", comm->get_remaining());
+ XBT_INFO("Suspending a completed activity is a no-op.");
+ comm->suspend();
+}
+
+static void receiver(int, char**)
+{
+ simgrid::s4u::Mailbox* mbox = simgrid::s4u::Mailbox::by_name("receiver");
+
+ XBT_INFO("Wait for the message.");
+ void* payload = mbox->get();
+
+ const std::string* received = static_cast<std::string*>(payload);
+ XBT_INFO("I got '%s'.", received->c_str());
+
+ delete received;
+}
+
+int main(int argc, char* argv[])
+{
+ xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
+
+ simgrid::s4u::Engine e(&argc, argv);
+ e.register_function("sender", &sender);
+ e.register_function("receiver", &receiver);
+
+ e.load_platform(argv[1]);
+ e.load_deployment(argv[2]);
+ e.run();
+
+ return 0;
+}