rculfhash: improve error handling of mmap backend
[userspace-rcu.git] / src / urcu-flavor.h
1 #ifndef _URCU_FLAVOR_H
2 #define _URCU_FLAVOR_H
3
4 /*
5 * urcu-flavor.h
6 *
7 * Userspace RCU header - rcu flavor declarations
8 *
9 * Copyright (c) 2011 Lai Jiangshan <laijs@cn.fujitsu.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 #ifdef __cplusplus
27 extern "C" {
28 #endif
29
30 struct urcu_atfork {
31 void (*before_fork)(void *priv);
32 void (*after_fork_parent)(void *priv);
33 void (*after_fork_child)(void *priv);
34 void *priv;
35 };
36
37 void urcu_register_rculfhash_atfork(struct urcu_atfork *atfork);
38 void urcu_unregister_rculfhash_atfork(struct urcu_atfork *atfork);
39
40 struct rcu_flavor_struct {
41 void (*read_lock)(void);
42 void (*read_unlock)(void);
43 int (*read_ongoing)(void);
44 void (*read_quiescent_state)(void);
45 void (*update_call_rcu)(struct rcu_head *head,
46 void (*func)(struct rcu_head *head));
47 void (*update_synchronize_rcu)(void);
48 void (*update_defer_rcu)(void (*fct)(void *p), void *p);
49
50 void (*thread_offline)(void);
51 void (*thread_online)(void);
52 void (*register_thread)(void);
53 void (*unregister_thread)(void);
54
55 void (*barrier)(void);
56
57 void (*register_rculfhash_atfork)(struct urcu_atfork *atfork);
58 void (*unregister_rculfhash_atfork)(struct urcu_atfork *atfork);
59 };
60
61 #define DEFINE_RCU_FLAVOR(x) \
62 const struct rcu_flavor_struct x = { \
63 .read_lock = rcu_read_lock, \
64 .read_unlock = rcu_read_unlock, \
65 .read_ongoing = rcu_read_ongoing, \
66 .read_quiescent_state = rcu_quiescent_state, \
67 .update_call_rcu = call_rcu, \
68 .update_synchronize_rcu = synchronize_rcu, \
69 .update_defer_rcu = defer_rcu, \
70 .thread_offline = rcu_thread_offline, \
71 .thread_online = rcu_thread_online, \
72 .register_thread = rcu_register_thread, \
73 .unregister_thread = rcu_unregister_thread,\
74 .barrier = rcu_barrier, \
75 .register_rculfhash_atfork = urcu_register_rculfhash_atfork, \
76 .unregister_rculfhash_atfork = urcu_unregister_rculfhash_atfork,\
77 }
78
79 extern const struct rcu_flavor_struct rcu_flavor;
80
81 #ifdef __cplusplus
82 }
83 #endif
84
85 #endif /* _URCU_FLAVOR_H */
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