mv examples/s4u examples/cpp

[simgrid.git] / examples / cpp / exec-waitfor / s4u-exec-waitfor.cpp

diff --git a/examples/cpp/exec-waitfor/s4u-exec-waitfor.cpp b/examples/cpp/exec-waitfor/s4u-exec-waitfor.cpp
new file mode 100644 (file)
index 0000000..6867422
--- /dev/null
+++ b/examples/cpp/exec-waitfor/s4u-exec-waitfor.cpp
@@ -0,0 +1,66 @@
+/* Copyright (c) 2019-2021. 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"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_exec_waitfor, "Messages specific for this s4u example");
+
+static void worker()
+{
+  simgrid::s4u::ExecPtr exec;
+  double amount = 5 * simgrid::s4u::this_actor::get_host()->get_speed();
+  XBT_INFO("Create an activity that should run for 5 seconds");
+
+  exec = simgrid::s4u::this_actor::exec_async(amount);
+
+  /* Now that execution is started, wait for 3 seconds. */
+  XBT_INFO("But let it end after 3 seconds");
+  try {
+    exec->wait_for(3);
+    XBT_INFO("Execution complete");
+  } catch (const simgrid::TimeoutException&) {
+    XBT_INFO("Execution Timeout!");
+  }
+
+  /* do it again, but this time with a timeout greater than the duration of the execution */
+  XBT_INFO("Create another activity that should run for 5 seconds and wait for it for 6 seconds");
+  exec = simgrid::s4u::this_actor::exec_async(amount);
+  try {
+    exec->wait_for(6);
+    XBT_INFO("Execution complete");
+  } catch (const simgrid::TimeoutException&) {
+    XBT_INFO("Execution Timeout!");
+  }
+
+  XBT_INFO("Finally test with a parallel execution");
+  auto hosts         = simgrid::s4u::Engine::get_instance()->get_all_hosts();
+  size_t hosts_count = hosts.size();
+  std::vector<double> computation_amounts;
+  std::vector<double> communication_amounts;
+
+  computation_amounts.assign(hosts_count, 1e9 /*1Gflop*/);
+  communication_amounts.assign(hosts_count * hosts_count, 0);
+  for (size_t i = 0; i < hosts_count; i++)
+    for (size_t j = i + 1; j < hosts_count; j++)
+      communication_amounts[i * hosts_count + j] = 1e7; // 10 MB
+
+  exec = simgrid::s4u::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
+  try {
+    exec->wait_for(2);
+    XBT_INFO("Parallel Execution complete");
+  } catch (const simgrid::TimeoutException&) {
+    XBT_INFO("Parallel Execution Timeout!");
+  }
+}
+
+int main(int argc, char* argv[])
+{
+  simgrid::s4u::Engine e(&argc, argv);
+  e.load_platform(argv[1]);
+  simgrid::s4u::Actor::create("worker", simgrid::s4u::Host::by_name("Tremblay"), worker);
+  e.run();
+
+  return 0;
+}