constify MPI_Datatype*

[simgrid.git] / include / simgrid / s4u / Barrier.hpp

diff --git a/include/simgrid/s4u/Barrier.hpp b/include/simgrid/s4u/Barrier.hpp
index b3c6e65dc309e03873747fe93e38831e476990ea..92ece5a6737ba141d287cef1fe8cd0afcd5c1ca8 100644 (file)
--- a/include/simgrid/s4u/Barrier.hpp
+++ b/include/simgrid/s4u/Barrier.hpp
@@ -1,15 +1,17 @@
-/* Copyright (c) 2018. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2018-2019. 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. */
 
-#ifndef SIMGRID_S4U_BARRIERHPP
+#ifndef SIMGRID_S4U_BARRIER_HPP
 #define SIMGRID_S4U_BARRIER_HPP
 
-#include "simgrid/s4u/ConditionVariable.hpp"
+#include <simgrid/forward.h>
+#include <simgrid/s4u/ConditionVariable.hpp>
 #include <simgrid/chrono.hpp>
 #include <simgrid/s4u/Mutex.hpp>
 
+#include <atomic>
 #include <future>
 
 namespace simgrid {
@@ -22,15 +24,25 @@ private:
   unsigned int expected_processes_;
   unsigned int arrived_processes_ = 0;
 
+  /* refcounting */
+  std::atomic_int_fast32_t refcount_{0};
+
 public:
   explicit Barrier(unsigned int count);
   ~Barrier()              = default;
   Barrier(Barrier const&) = delete;
   Barrier& operator=(Barrier const&) = delete;
 
+  /** Constructs a new barrier */
+  static BarrierPtr create(unsigned int expected_processes);
+
   int wait();
+
+  /* refcounting */
+  friend XBT_PUBLIC void intrusive_ptr_add_ref(Barrier* barrier);
+  friend XBT_PUBLIC void intrusive_ptr_release(Barrier* barrier);
 };
-}
-} // namespace simgrid::s4u
+} // namespace s4u
+} // namespace simgrid
 
 #endif