Fix: uatomic arm32: add missing release barrier before uatomic_xchg
[urcu.git] / include / urcu / rculfstack.h
1 #ifndef _URCU_RCULFSTACK_H
2 #define _URCU_RCULFSTACK_H
3
4 /*
5 * rculfstack.h
6 *
7 * Userspace RCU library - Lock-Free RCU Stack
8 *
9 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26 #include <urcu/compiler.h>
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 #ifndef CDS_LFS_RCU_DEPRECATED
33 #define CDS_LFS_RCU_DEPRECATED \
34 CDS_DEPRECATED("urcu/rculfstack.h is deprecated. Please use urcu/lfstack.h instead.")
35 #endif
36
37 struct cds_lfs_node_rcu {
38 struct cds_lfs_node_rcu *next;
39 };
40
41 struct cds_lfs_stack_rcu {
42 struct cds_lfs_node_rcu *head;
43 };
44
45 #ifdef _LGPL_SOURCE
46
47 #include <urcu/static/rculfstack.h>
48
49 static inline CDS_LFS_RCU_DEPRECATED
50 void cds_lfs_node_init_rcu(struct cds_lfs_node_rcu *node)
51 {
52 _cds_lfs_node_init_rcu(node);
53 }
54
55 static inline
56 void cds_lfs_init_rcu(struct cds_lfs_stack_rcu *s)
57 {
58 _cds_lfs_init_rcu(s);
59 }
60
61 static inline CDS_LFS_RCU_DEPRECATED
62 int cds_lfs_push_rcu(struct cds_lfs_stack_rcu *s,
63 struct cds_lfs_node_rcu *node)
64 {
65 return _cds_lfs_push_rcu(s, node);
66 }
67
68 static inline CDS_LFS_RCU_DEPRECATED
69 struct cds_lfs_node_rcu *cds_lfs_pop_rcu(struct cds_lfs_stack_rcu *s)
70 {
71 return _cds_lfs_pop_rcu(s);
72 }
73
74 #else /* !_LGPL_SOURCE */
75
76 extern CDS_LFS_RCU_DEPRECATED
77 void cds_lfs_node_init_rcu(struct cds_lfs_node_rcu *node);
78 extern CDS_LFS_RCU_DEPRECATED
79 void cds_lfs_init_rcu(struct cds_lfs_stack_rcu *s);
80 extern CDS_LFS_RCU_DEPRECATED
81 int cds_lfs_push_rcu(struct cds_lfs_stack_rcu *s,
82 struct cds_lfs_node_rcu *node);
83
84 /*
85 * Should be called under rcu read lock critical section.
86 *
87 * The caller must wait for a grace period to pass before freeing the returned
88 * node or modifying the cds_lfs_node_rcu structure.
89 * Returns NULL if stack is empty.
90 */
91 extern CDS_LFS_RCU_DEPRECATED
92 struct cds_lfs_node_rcu *cds_lfs_pop_rcu(struct cds_lfs_stack_rcu *s);
93
94 #endif /* !_LGPL_SOURCE */
95
96 #ifdef __cplusplus
97 }
98 #endif
99
100 #endif /* _URCU_RCULFSTACK_H */
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