X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/70d2f595faa35389d76189f75d8ac70ad0b01a36..5fd60ae4fdc2aaaff1bed6ac2978e8c7ed2077c4:/examples/s4u/plugin-link-load/s4u-plugin-link-load.cpp

diff --git a/examples/s4u/plugin-link-load/s4u-plugin-link-load.cpp b/examples/s4u/plugin-link-load/s4u-plugin-link-load.cpp
new file mode 100644
index 0000000000..ee20ed5618
--- /dev/null
+++ b/examples/s4u/plugin-link-load/s4u-plugin-link-load.cpp
@@ -0,0 +1,104 @@
+/* Copyright (c) 2007-2020. 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. */
+
+#include "simgrid/plugins/load.h"
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
+
+static void sender(const std::string& mailbox, uint64_t msg_size)
+{
+  auto mbox = simgrid::s4u::Mailbox::by_name(mailbox);
+  mbox->put((void*)1, msg_size);
+}
+
+static void receiver(const std::string& mailbox)
+{
+  auto mbox = simgrid::s4u::Mailbox::by_name(mailbox);
+  mbox->get();
+}
+
+static void run_transfer(simgrid::s4u::Host* src_host, simgrid::s4u::Host* dst_host, const std::string& mailbox,
+                         uint64_t msg_size)
+{
+  XBT_INFO("Launching the transfer of %lu bytes", msg_size);
+  simgrid::s4u::Actor::create("sender", src_host, sender, mailbox, msg_size);
+  simgrid::s4u::Actor::create("receiver", dst_host, receiver, mailbox);
+}
+
+static void execute_load_test()
+{
+  auto host0 = simgrid::s4u::Host::by_name("node-0.simgrid.org");
+  auto host1 = simgrid::s4u::Host::by_name("node-1.simgrid.org");
+
+  simgrid::s4u::this_actor::sleep_for(1);
+  run_transfer(host0, host1, "1", 1000 * 1000 * 1000);
+
+  simgrid::s4u::this_actor::sleep_for(10);
+  run_transfer(host0, host1, "2", 1000 * 1000 * 1000);
+  simgrid::s4u::this_actor::sleep_for(3);
+  run_transfer(host0, host1, "3", 1000 * 1000 * 1000);
+}
+
+static void show_link_load(const std::string& link_name, const simgrid::s4u::Link* link)
+{
+  XBT_INFO("%s link load (cum, avg, min, max): (%g, %g, %g, %g)", link_name.c_str(), sg_link_get_cum_load(link),
+           sg_link_get_avg_load(link), sg_link_get_min_instantaneous_load(link),
+           sg_link_get_max_instantaneous_load(link));
+}
+
+static void monitor()
+{
+  auto link_backbone = simgrid::s4u::Link::by_name("cluster0_backbone");
+  auto link_host0    = simgrid::s4u::Link::by_name("cluster0_link_0_UP");
+  auto link_host1    = simgrid::s4u::Link::by_name("cluster0_link_1_DOWN");
+
+  XBT_INFO("Tracking desired links");
+  sg_link_load_track(link_backbone);
+  sg_link_load_track(link_host0);
+  sg_link_load_track(link_host1);
+
+  show_link_load("Backbone", link_backbone);
+  while (simgrid::s4u::Engine::get_clock() < 5) {
+    simgrid::s4u::this_actor::sleep_for(1);
+    show_link_load("Backbone", link_backbone);
+  }
+
+  XBT_INFO("Untracking the backbone link");
+  sg_link_load_untrack(link_backbone);
+
+  show_link_load("Host0_UP", link_host0);
+  show_link_load("Host1_UP", link_host1);
+
+  XBT_INFO("Now resetting and probing host links each second.");
+
+  while (simgrid::s4u::Engine::get_clock() < 29) {
+    sg_link_load_reset(link_host0);
+    sg_link_load_reset(link_host1);
+
+    simgrid::s4u::this_actor::sleep_for(1);
+
+    show_link_load("Host0_UP", link_host0);
+    show_link_load("Host1_UP", link_host1);
+  }
+}
+
+int main(int argc, char* argv[])
+{
+  simgrid::s4u::Engine e(&argc, argv);
+  sg_link_load_plugin_init();
+
+  xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/energy_platform.xml\n", argv[0], argv[0]);
+  e.load_platform(argv[1]);
+
+  simgrid::s4u::Actor::create("load_test", simgrid::s4u::Host::by_name("node-42.simgrid.org"), execute_load_test);
+  simgrid::s4u::Actor::create("monitor", simgrid::s4u::Host::by_name("node-51.simgrid.org"), monitor);
+
+  e.run();
+
+  XBT_INFO("Total simulation time: %.2f", simgrid::s4u::Engine::get_clock());
+
+  return 0;
+}