+xbt_os_rmutex_t xbt_os_rmutex_init(void)
+{
+ xbt_os_rmutex_t rmutex = xbt_new0(struct xbt_os_rmutex_, 0);
+ rmutex->mutex = xbt_os_mutex_init();
+ rmutex->owner = NULL;
+ rmutex->count = 0;
+ return rmutex;
+}
+
+void xbt_os_rmutex_acquire(xbt_os_rmutex_t rmutex)
+{
+ xbt_os_thread_t self = xbt_os_thread_self();
+ xbt_assert(self != NULL, "Cannot get my own thread object (is the thread module initialized?)");
+
+ if (self != rmutex->owner) {
+ xbt_os_mutex_acquire(rmutex->mutex);
+ rmutex->owner = self;
+ rmutex->count = 1;
+ } else {
+ rmutex->count++;
+ }
+}
+
+void xbt_os_rmutex_release(xbt_os_rmutex_t rmutex)
+{
+ xbt_assert(rmutex->owner == xbt_os_thread_self());
+
+ if (--rmutex->count == 0) {
+ rmutex->owner = NULL;
+ xbt_os_mutex_release(rmutex->mutex);
+ }
+}
+
+void xbt_os_rmutex_destroy(xbt_os_rmutex_t rmutex)
+{
+ xbt_os_mutex_destroy(rmutex->mutex);
+ xbt_free(rmutex);
+}
+