-/* Copyright (c) 2006-2022. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2006-2023. 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" /* All of S4U */
#include "xbt/config.hpp"
-namespace sg4 = simgrid::s4u;
+#include <mutex> /* std::mutex and std::scoped_lock */
-#include <mutex> /* std::mutex and std::lock_guard */
+namespace sg4 = simgrid::s4u;
static simgrid::config::Flag<int> cfg_actor_count("actors", "How many pairs of actors should be started?", 6);
mutex->unlock();
}
-static void workerLockGuard(sg4::MutexPtr mutex, int& result)
+static void workerScopedLock(sg4::MutexPtr mutex, int& result)
{
- // Simply use the std::lock_guard like this
+ // Simply use the std::scoped_lock like this
// It's like a lock() that would do the unlock() automatically when getting out of scope
- std::lock_guard<sg4::Mutex> lock(*mutex);
+ const std::scoped_lock lock(*mutex);
// then you are in a safe zone
- XBT_INFO("Hello s4u, I'm ready to compute after a lock_guard");
+ XBT_INFO("Hello s4u, I'm ready to compute after a scoped_lock");
// update the results
result += 1;
XBT_INFO("I'm done, good bye");
// Nothing specific here: the unlock will be automatic
}
-static void master()
+int main(int argc, char** argv)
{
- int result = 0;
+ sg4::Engine e(&argc, argv);
+ e.load_platform(argc > 1 ? argv[1] : "../../platforms/two_hosts.xml");
+
+ /* Create the requested amount of actors pairs. Each pair has a specific mutex and cell in `result`. */
+ std::vector<int> result(cfg_actor_count.get());
for (int i = 0; i < cfg_actor_count; i++) {
sg4::MutexPtr mutex = sg4::Mutex::create();
- sg4::Actor::create("worker", sg4::Host::by_name("Jupiter"), workerLockGuard, mutex, std::ref(result));
- sg4::Actor::create("worker", sg4::Host::by_name("Tremblay"), worker, mutex, std::ref(result));
+ sg4::Actor::create("worker", sg4::Host::by_name("Jupiter"), workerScopedLock, mutex, std::ref(result[i]));
+ sg4::Actor::create("worker", sg4::Host::by_name("Tremblay"), worker, mutex, std::ref(result[i]));
}
- sg4::this_actor::sleep_for(10);
- XBT_INFO("Results is -> %d", result);
-}
-
-int main(int argc, char **argv)
-{
- sg4::Engine e(&argc, argv);
- e.load_platform("../../platforms/two_hosts.xml");
- sg4::Actor::create("main", e.host_by_name("Tremblay"), master);
e.run();
+ for (int i = 0; i < cfg_actor_count; i++)
+ XBT_INFO("Result[%d] -> %d", i, result[i]);
+
return 0;
}