| 1 | // SPDX-FileCopyrightText: 2009 Mathieu Desnoyers <mathieu.desnoyers@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 | } |