Home | History | Annotate | Line # | Download | only in src 
      1 // SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers (at) efficios.com>
      2 // SPDX-FileCopyrightText: 2009 Paul E. McKenney, IBM Corporation.
      3 //
      4 // SPDX-License-Identifier: LGPL-2.1-or-later
      5 
      6 /*
      7  * library wrappers to be used by non-LGPL compatible source code.
      8  *
      9  * IBM's contributions to this file may be relicensed under LGPLv2 or later.
     10  */
     11 
     12 #include <urcu/uatomic.h>
     13 
     14 #include <urcu/static/pointer.h>
     15 /* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
     16 #include <urcu/pointer.h>
     17 
     18 extern void synchronize_rcu(void);
     19 
     20 void *rcu_dereference_sym(void *p)
     21 {
     22 	return _rcu_dereference(p);
     23 }
     24 
     25 void *rcu_set_pointer_sym(void **p, void *v)
     26 {
     27 	uatomic_store(p, v, CMM_RELEASE);
     28 	return v;
     29 }
     30 
     31 void *rcu_xchg_pointer_sym(void **p, void *v)
     32 {
     33 	return uatomic_xchg_mo(p, v, CMM_SEQ_CST);
     34 }
     35 
     36 void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
     37 {
     38 	return uatomic_cmpxchg_mo(p, old, _new, CMM_SEQ_CST, CMM_RELAXED);
     39 }
     40