s390 uatomic arch fix
[urcu.git] / urcu.h
CommitLineData
27b012e2
MD
1#ifndef _URCU_H
2#define _URCU_H
3
b257a10b
MD
4/*
5 * urcu.h
6 *
7 * Userspace RCU header
8 *
af02d47e
MD
9 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
10 * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
5e7e64b9 11 *
121a5d44 12 * LGPL-compatible code should include this header with :
5e7e64b9 13 *
121a5d44
MD
14 * #define _LGPL_SOURCE
15 * #include <urcu.h>
16 *
af02d47e
MD
17 * This library is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU Lesser General Public
19 * License as published by the Free Software Foundation; either
20 * version 2.1 of the License, or (at your option) any later version.
21 *
22 * This library is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * Lesser General Public License for more details.
26 *
27 * You should have received a copy of the GNU Lesser General Public
28 * License along with this library; if not, write to the Free Software
29 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
54843abc
PM
30 *
31 * IBM's contributions to this file may be relicensed under LGPLv2 or later.
b257a10b
MD
32 */
33
1430ee0b 34#include <stdlib.h>
69a757c9 35#include <pthread.h>
1430ee0b 36
7e30abe3
MD
37/*
38 * See urcu-pointer.h and urcu-pointer-static.h for pointer publication headers.
39 */
40#include <urcu-pointer.h>
41
92b752ee
MD
42/*
43 * Important !
44 *
45 * Each thread containing read-side critical sections must be registered
46 * with rcu_register_thread() before calling rcu_read_lock().
47 * rcu_unregister_thread() should be called before the thread exits.
48 */
49
121a5d44 50#ifdef _LGPL_SOURCE
b0d5e790 51
121a5d44 52#include <urcu-static.h>
3a86deba
MD
53
54/*
121a5d44
MD
55 * Mappings for static use of the userspace RCU library.
56 * Should only be used in LGPL-compatible code.
3a86deba 57 */
3a86deba 58
7e30abe3
MD
59/*
60 * rcu_read_lock()
61 * rcu_read_unlock()
62 *
63 * Mark the beginning and end of a read-side critical section.
64 * DON'T FORGET TO USE RCU_REGISTER/UNREGISTER_THREAD() FOR EACH THREAD WITH
65 * READ-SIDE CRITICAL SECTION.
66 */
67#define rcu_read_lock() _rcu_read_lock()
68#define rcu_read_unlock() _rcu_read_unlock()
41718ff9 69
121a5d44 70#else /* !_LGPL_SOURCE */
27b012e2 71
40e140c9 72/*
121a5d44 73 * library wrappers to be used by non-LGPL compatible source code.
7e30abe3 74 * See LGPL-only urcu-pointer-static.h for documentation.
40e140c9 75 */
cf380c2f 76
121a5d44
MD
77extern void rcu_read_lock(void);
78extern void rcu_read_unlock(void);
cf380c2f 79
121a5d44 80#endif /* !_LGPL_SOURCE */
f4a486ac 81
e462817e 82extern void synchronize_rcu(void);
27b012e2
MD
83
84/*
85 * Reader thread registration.
86 */
121a5d44
MD
87extern void rcu_register_thread(void);
88extern void rcu_unregister_thread(void);
27b012e2 89
e95f4e7f
MD
90/*
91 * Explicit urcu initialization, for "early" use within library constructors.
92 */
93extern void urcu_init(void);
94
27b012e2 95#endif /* _URCU_H */
This page took 0.042094 seconds and 4 git commands to generate.