Add rcu_read_ongoing() API to each urcu flavor
[urcu.git] / urcu / map / urcu.h
1 #ifndef _URCU_MAP_H
2 #define _URCU_MAP_H
3
4 /*
5 * urcu-map.h
6 *
7 * Userspace RCU header -- name mapping to allow multiple flavors to be
8 * used in the same executable.
9 *
10 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
12 *
13 * LGPL-compatible code should include this header with :
14 *
15 * #define _LGPL_SOURCE
16 * #include <urcu.h>
17 *
18 * This library is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU Lesser General Public
20 * License as published by the Free Software Foundation; either
21 * version 2.1 of the License, or (at your option) any later version.
22 *
23 * This library is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * Lesser General Public License for more details.
27 *
28 * You should have received a copy of the GNU Lesser General Public
29 * License along with this library; if not, write to the Free Software
30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 *
32 * IBM's contributions to this file may be relicensed under LGPLv2 or later.
33 */
34
35 /* Mapping macros to allow multiple flavors in a single binary. */
36
37 #if !defined(RCU_MEMBARRIER) && !defined(RCU_SIGNAL) && !defined(RCU_MB)
38 #define RCU_MEMBARRIER
39 #endif
40
41 /*
42 * RCU_MEMBARRIER is only possibly available on Linux. Fallback to
43 * RCU_MB
44 * otherwise.
45 */
46 #if !defined(__linux__) && defined(RCU_MEMBARRIER)
47 #undef RCU_MEMBARRIER
48 #define RCU_MB
49 #endif
50
51 #ifdef RCU_MEMBARRIER
52 #include <syscall.h>
53
54 /* If the headers do not support SYS_membarrier, statically use RCU_MB */
55 #ifdef SYS_membarrier
56 # define MEMBARRIER_EXPEDITED (1 << 0)
57 # define MEMBARRIER_DELAYED (1 << 1)
58 # define MEMBARRIER_QUERY (1 << 16)
59 # define membarrier(...) syscall(SYS_membarrier, __VA_ARGS__)
60 #else
61 # undef RCU_MEMBARRIER
62 # define RCU_MB
63 #endif
64 #endif
65
66 #ifdef RCU_MEMBARRIER
67
68 #define rcu_read_lock rcu_read_lock_memb
69 #define _rcu_read_lock _rcu_read_lock_memb
70 #define rcu_read_unlock rcu_read_unlock_memb
71 #define _rcu_read_unlock _rcu_read_unlock_memb
72 #define rcu_read_ongoing rcu_read_ongoing_memb
73 #define _rcu_read_ongoing _rcu_read_ongoing_memb
74 #define rcu_register_thread rcu_register_thread_memb
75 #define rcu_unregister_thread rcu_unregister_thread_memb
76 #define rcu_init rcu_init_memb
77 #define rcu_exit rcu_exit_memb
78 #define synchronize_rcu synchronize_rcu_memb
79 #define rcu_reader rcu_reader_memb
80 #define rcu_gp_ctr rcu_gp_ctr_memb
81 #define rcu_gp_futex rcu_gp_futex_memb
82
83 #define get_cpu_call_rcu_data get_cpu_call_rcu_data_memb
84 #define get_call_rcu_thread get_call_rcu_thread_memb
85 #define create_call_rcu_data create_call_rcu_data_memb
86 #define set_cpu_call_rcu_data set_cpu_call_rcu_data_memb
87 #define get_default_call_rcu_data get_default_call_rcu_data_memb
88 #define get_call_rcu_data get_call_rcu_data_memb
89 #define get_thread_call_rcu_data get_thread_call_rcu_data_memb
90 #define set_thread_call_rcu_data set_thread_call_rcu_data_memb
91 #define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_memb
92 #define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_memb
93 #define call_rcu call_rcu_memb
94 #define call_rcu_data_free call_rcu_data_free_memb
95 #define call_rcu_before_fork call_rcu_before_fork_memb
96 #define call_rcu_after_fork_parent call_rcu_after_fork_parent_memb
97 #define call_rcu_after_fork_child call_rcu_after_fork_child_memb
98
99 #define defer_rcu defer_rcu_memb
100 #define rcu_defer_register_thread rcu_defer_register_thread_memb
101 #define rcu_defer_unregister_thread rcu_defer_unregister_thread_memb
102 #define rcu_defer_barrier rcu_defer_barrier_memb
103 #define rcu_defer_barrier_thread rcu_defer_barrier_thread_memb
104 #define rcu_defer_exit rcu_defer_exit_memb
105
106 #define rcu_flavor rcu_flavor_memb
107
108 #define rcu_yield_active rcu_yield_active_memb
109 #define rcu_rand_yield rcu_rand_yield_memb
110
111 /* Specific to MEMBARRIER flavor */
112 #define rcu_has_sys_membarrier rcu_has_sys_membarrier_memb
113
114 #elif defined(RCU_SIGNAL)
115
116 #define rcu_read_lock rcu_read_lock_sig
117 #define _rcu_read_lock _rcu_read_lock_sig
118 #define rcu_read_unlock rcu_read_unlock_sig
119 #define _rcu_read_unlock _rcu_read_unlock_sig
120 #define rcu_read_ongoing rcu_read_ongoing_sig
121 #define _rcu_read_ongoing _rcu_read_ongoing_sig
122 #define rcu_register_thread rcu_register_thread_sig
123 #define rcu_unregister_thread rcu_unregister_thread_sig
124 #define rcu_init rcu_init_sig
125 #define rcu_exit rcu_exit_sig
126 #define synchronize_rcu synchronize_rcu_sig
127 #define rcu_reader rcu_reader_sig
128 #define rcu_gp_ctr rcu_gp_ctr_sig
129 #define rcu_gp_futex rcu_gp_futex_sig
130
131 #define get_cpu_call_rcu_data get_cpu_call_rcu_data_sig
132 #define get_call_rcu_thread get_call_rcu_thread_sig
133 #define create_call_rcu_data create_call_rcu_data_sig
134 #define set_cpu_call_rcu_data set_cpu_call_rcu_data_sig
135 #define get_default_call_rcu_data get_default_call_rcu_data_sig
136 #define get_call_rcu_data get_call_rcu_data_sig
137 #define get_thread_call_rcu_data get_thread_call_rcu_data_sig
138 #define set_thread_call_rcu_data set_thread_call_rcu_data_sig
139 #define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_sig
140 #define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_sig
141 #define call_rcu call_rcu_sig
142 #define call_rcu_data_free call_rcu_data_free_sig
143 #define call_rcu_before_fork call_rcu_before_fork_sig
144 #define call_rcu_after_fork_parent call_rcu_after_fork_parent_sig
145 #define call_rcu_after_fork_child call_rcu_after_fork_child_sig
146
147 #define defer_rcu defer_rcu_sig
148 #define rcu_defer_register_thread rcu_defer_register_thread_sig
149 #define rcu_defer_unregister_thread rcu_defer_unregister_thread_sig
150 #define rcu_defer_barrier rcu_defer_barrier_sig
151 #define rcu_defer_barrier_thread rcu_defer_barrier_thread_sig
152 #define rcu_defer_exit rcu_defer_exit_sig
153
154 #define rcu_flavor rcu_flavor_sig
155
156 #define rcu_yield_active rcu_yield_active_sig
157 #define rcu_rand_yield rcu_rand_yield_sig
158
159 #elif defined(RCU_MB)
160
161 #define rcu_read_lock rcu_read_lock_mb
162 #define _rcu_read_lock _rcu_read_lock_mb
163 #define rcu_read_unlock rcu_read_unlock_mb
164 #define _rcu_read_unlock _rcu_read_unlock_mb
165 #define rcu_read_ongoing rcu_read_ongoing_mb
166 #define _rcu_read_ongoing _rcu_read_ongoing_mb
167 #define rcu_register_thread rcu_register_thread_mb
168 #define rcu_unregister_thread rcu_unregister_thread_mb
169 #define rcu_init rcu_init_mb
170 #define rcu_exit rcu_exit_mb
171 #define synchronize_rcu synchronize_rcu_mb
172 #define rcu_reader rcu_reader_mb
173 #define rcu_gp_ctr rcu_gp_ctr_mb
174 #define rcu_gp_futex rcu_gp_futex_mb
175
176 #define get_cpu_call_rcu_data get_cpu_call_rcu_data_mb
177 #define get_call_rcu_thread get_call_rcu_thread_mb
178 #define create_call_rcu_data create_call_rcu_data_mb
179 #define set_cpu_call_rcu_data set_cpu_call_rcu_data_mb
180 #define get_default_call_rcu_data get_default_call_rcu_data_mb
181 #define get_call_rcu_data get_call_rcu_data_mb
182 #define get_thread_call_rcu_data get_thread_call_rcu_data_mb
183 #define set_thread_call_rcu_data set_thread_call_rcu_data_mb
184 #define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_mb
185 #define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_mb
186 #define call_rcu call_rcu_mb
187 #define call_rcu_data_free call_rcu_data_free_mb
188 #define call_rcu_before_fork call_rcu_before_fork_mb
189 #define call_rcu_after_fork_parent call_rcu_after_fork_parent_mb
190 #define call_rcu_after_fork_child call_rcu_after_fork_child_mb
191
192 #define defer_rcu defer_rcu_mb
193 #define rcu_defer_register_thread rcu_defer_register_thread_mb
194 #define rcu_defer_unregister_thread rcu_defer_unregister_thread_mb
195 #define rcu_defer_barrier rcu_defer_barrier_mb
196 #define rcu_defer_barrier_thread rcu_defer_barrier_thread_mb
197 #define rcu_defer_exit rcu_defer_exit_mb
198
199 #define rcu_flavor rcu_flavor_mb
200
201 #define rcu_yield_active rcu_yield_active_mb
202 #define rcu_rand_yield rcu_rand_yield_mb
203
204 #else
205
206 #error "Undefined selection"
207
208 #endif
209
210 #endif /* _URCU_MAP_H */
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