1 /* Copyright (c) 2018-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_S4U_BARRIER_HPP
7 #define SIMGRID_S4U_BARRIER_HPP
9 #include <simgrid/forward.h>
10 #include <simgrid/s4u/ConditionVariable.hpp>
11 #include <simgrid/chrono.hpp>
12 #include <simgrid/s4u/Mutex.hpp>
17 constexpr int SG_BARRIER_SERIAL_THREAD = -1;
22 class XBT_PUBLIC Barrier {
25 ConditionVariablePtr cond_;
26 unsigned int expected_actors_;
27 unsigned int arrived_actors_ = 0;
30 std::atomic_int_fast32_t refcount_{0};
33 explicit Barrier(unsigned int count);
36 Barrier(Barrier const&) = delete;
37 Barrier& operator=(Barrier const&) = delete;
40 static BarrierPtr create(unsigned int expected_actors);
45 friend XBT_PUBLIC void intrusive_ptr_add_ref(Barrier* barrier);
46 friend XBT_PUBLIC void intrusive_ptr_release(Barrier* barrier);
50 } // namespace simgrid