+/* Copyright (c) 2006-2015. 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 <xbt/sysdep.h>
+#include <mutex>
+
+#include "simgrid/s4u.h"
+
+#define NB_ACTOR 2
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "a sample log category");
+
+// simgrid::s4u::Mutex mtx; //FIXME generate error -> You must run MSG_init before using MSG
+
+//Create an actor as a c++ functor
+class Worker {
+simgrid::s4u::Mutex *pMtx;
+int *pResults;
+public:
+ Worker(int *res, simgrid::s4u::Mutex *mtx) : pMtx(mtx), pResults(res) {};
+ // Define the code of the actor
+ void operator()() {
+ // Do the calculation
+ simgrid::s4u::this_actor::execute(1000);
+
+ // lock the mutex before enter in th critical section
+ pMtx->lock();
+ XBT_INFO("Hello s4u, I'm ready to compute");
+
+ // And finaly add it to the results
+ *pResults += 1;
+ XBT_INFO("I'm done, good bye");
+
+ //Then unlock the mutex, so other threads will be able to update their results
+ pMtx->unlock();
+ }
+};
+
+// This class is an example of how to use lock_guard with simgrid mutex
+class WorkerLockGuard {
+simgrid::s4u::Mutex *pMtx;
+int *pResults;
+public:
+ WorkerLockGuard(int *res, simgrid::s4u::Mutex *mtx) : pMtx(mtx), pResults(res) {};
+ void operator()() {
+
+ simgrid::s4u::this_actor::execute(1000);
+
+ // Simply use the std::lock_guard like this
+ std::lock_guard<simgrid::s4u::Mutex> lock(*pMtx);
+
+ // then you are in a safe zone
+ XBT_INFO("Hello s4u, I'm ready to compute");
+ // update the results
+ *pResults += 1;
+ XBT_INFO("I'm done, good bye");
+ }
+};
+
+class MainActor {
+public:
+ void operator()() {
+ int *res = new int;
+ simgrid::s4u::Mutex *mtx = new simgrid::s4u::Mutex();
+ *res = 0;
+ simgrid::s4u::Actor* workers[NB_ACTOR*2];
+
+ for (int i = 0; i < NB_ACTOR * 2 ; i++) {
+ // To create a worker use the static method simgrid::s4u::Actor.
+ if((i % 2) == 0 )
+ workers[i] = new simgrid::s4u::Actor("worker", simgrid::s4u::Host::by_name("Jupiter"), WorkerLockGuard(res,mtx));
+ else
+ workers[i] = new simgrid::s4u::Actor("worker", simgrid::s4u::Host::by_name("Tremblay"), Worker(res,mtx));
+ }
+
+ for (int i = 0; i < NB_ACTOR ; i++) {
+ delete workers[i];
+ }
+
+ simgrid::s4u::this_actor::sleep(10);
+ XBT_INFO("Results is -> %d", *res);
+ delete mtx;
+ }
+};
+
+
+int main(int argc, char **argv) {
+ simgrid::s4u::Engine *e = new simgrid::s4u::Engine(&argc,argv);
+ e->loadPlatform("../../platforms/two_hosts.xml");
+ new simgrid::s4u::Actor("main", simgrid::s4u::Host::by_name("Tremblay"), 0, MainActor());
+ e->run();
+ return 0;
+}
