X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/149c63f36e15b8500b1e826bda5138318ff7ba2b..2a6c5ce52acb820ea198f6c97cfbe0060219ed4f:/include/simgrid/s4u/Semaphore.hpp

diff --git a/include/simgrid/s4u/Semaphore.hpp b/include/simgrid/s4u/Semaphore.hpp
index 602553d4cb..8520d61a94 100644
--- a/include/simgrid/s4u/Semaphore.hpp
+++ b/include/simgrid/s4u/Semaphore.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2006-2020. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2006-2021. 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. */
@@ -14,7 +14,7 @@ namespace s4u {
 
 /** @brief A classical semaphore, but blocking in the simulation world
  *
- * @rst
+ * @beginrst
  * It is strictly impossible to use a real semaphore, such as
  * `sem_init <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sem_init.html>`_,
  * because it would block the whole simulation.
@@ -29,29 +29,32 @@ namespace s4u {
  *
  */
 class XBT_PUBLIC Semaphore {
-  smx_sem_t sem_;
-  std::atomic_int_fast32_t refcount_{0};
+#ifndef DOXYGEN
+  friend kernel::activity::SemaphoreImpl;
+  friend void kernel::activity::intrusive_ptr_release(kernel::activity::SemaphoreImpl* sem);
+#endif
 
-  friend void intrusive_ptr_add_ref(Semaphore* sem);
-  friend void intrusive_ptr_release(Semaphore* sem);
+  kernel::activity::SemaphoreImpl* const pimpl_;
 
-public:
-  explicit Semaphore(unsigned int initial_capacity);
-  ~Semaphore();
+  friend void intrusive_ptr_add_ref(const Semaphore* sem);
+  friend void intrusive_ptr_release(const Semaphore* sem);
 
+  explicit Semaphore(kernel::activity::SemaphoreImpl* sem) : pimpl_(sem) {}
+  ~Semaphore() = default;
 #ifndef DOXYGEN
   Semaphore(Semaphore const&) = delete;            // No copy constructor. Use SemaphorePtr instead
   Semaphore& operator=(Semaphore const&) = delete; // No direct assignment either. Use SemaphorePtr instead
 #endif
 
+public:
   /** Constructs a new semaphore */
   static SemaphorePtr create(unsigned int initial_capacity);
 
   void acquire();
-  int acquire_timeout(double timeout);
+  bool acquire_timeout(double timeout);
   void release();
-  int get_capacity();
-  int would_block();
+  int get_capacity() const;
+  bool would_block() const;
 };
 
 } // namespace s4u