X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8206f2d5427004aa113da1f9985d9263183bb978..4fb5244980199691e9976323c2c3a09ebb168242:/include/simgrid/s4u/Mutex.hpp

diff --git a/include/simgrid/s4u/Mutex.hpp b/include/simgrid/s4u/Mutex.hpp
index 87d47682a2..29d9ed1043 100644
--- a/include/simgrid/s4u/Mutex.hpp
+++ b/include/simgrid/s4u/Mutex.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2006-2021. 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. */
@@ -6,13 +6,15 @@
 #ifndef SIMGRID_S4U_MUTEX_HPP
 #define SIMGRID_S4U_MUTEX_HPP
 
+#include "simgrid/s4u/Actor.hpp"
 #include <simgrid/forward.h>
 #include <xbt/asserts.h>
 
-namespace simgrid {
-namespace s4u {
+namespace simgrid::s4u {
 
 /** @brief A classical mutex, but blocking in the simulation world.
+ *
+ * S4U mutexes are not recursive. If an actor tries to lock the same object twice, it deadlocks with itself.
  *
  * @beginrst
  * It is strictly impossible to use a real mutex, such as
@@ -32,7 +34,7 @@ class XBT_PUBLIC Mutex {
 #ifndef DOXYGEN
   friend ConditionVariable;
   friend kernel::activity::MutexImpl;
-  friend void kernel::activity::intrusive_ptr_release(kernel::activity::MutexImpl* mutex);
+  friend XBT_PUBLIC void kernel::activity::intrusive_ptr_release(kernel::activity::MutexImpl* mutex);
 #endif
 
   kernel::activity::MutexImpl* const pimpl_;
@@ -48,14 +50,16 @@ class XBT_PUBLIC Mutex {
 #endif
 
 public:
-  /** Constructs a new mutex */
-  static MutexPtr create();
+  /** \static Constructs a new mutex */
+  static MutexPtr create(bool recursive = false);
+
   void lock();
   void unlock();
   bool try_lock();
+
+  Actor* get_owner();
 };
 
-} // namespace s4u
-} // namespace simgrid
+} // namespace simgrid::s4u
 
 #endif /* SIMGRID_S4U_MUTEX_HPP */