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5e77fc1f PM |
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 | ||
0376e7b2 | 37 | #if !defined(RCU_MEMBARRIER) && !defined(RCU_SIGNAL) && !defined(RCU_MB) |
052fdaee | 38 | #define RCU_MEMBARRIER |
0376e7b2 PM |
39 | #endif |
40 | ||
4a0b347a MD |
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 | ||
5e77fc1f PM |
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 | |
882f3357 MD |
72 | #define rcu_read_ongoing rcu_read_ongoing_memb |
73 | #define _rcu_read_ongoing _rcu_read_ongoing_memb | |
5e77fc1f PM |
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 | |
1de4df4b | 81 | #define rcu_gp_futex rcu_gp_futex_memb |
5e77fc1f PM |
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 | |
1de4df4b MD |
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 | |
5e77fc1f | 98 | |
0376e7b2 PM |
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 | |
1de4df4b | 104 | #define rcu_defer_exit rcu_defer_exit_memb |
0376e7b2 | 105 | |
541d828d LJ |
106 | #define rcu_flavor rcu_flavor_memb |
107 | ||
1de4df4b MD |
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 | ||
5e77fc1f PM |
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 | |
882f3357 MD |
120 | #define rcu_read_ongoing rcu_read_ongoing_sig |
121 | #define _rcu_read_ongoing _rcu_read_ongoing_sig | |
5e77fc1f PM |
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 | |
1de4df4b | 129 | #define rcu_gp_futex rcu_gp_futex_sig |
5e77fc1f PM |
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 | |
1de4df4b MD |
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 | |
5e77fc1f | 146 | |
0376e7b2 PM |
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 | |
1de4df4b | 152 | #define rcu_defer_exit rcu_defer_exit_sig |
0376e7b2 | 153 | |
541d828d LJ |
154 | #define rcu_flavor rcu_flavor_sig |
155 | ||
1de4df4b MD |
156 | #define rcu_yield_active rcu_yield_active_sig |
157 | #define rcu_rand_yield rcu_rand_yield_sig | |
158 | ||
5e77fc1f PM |
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 | |
882f3357 MD |
165 | #define rcu_read_ongoing rcu_read_ongoing_mb |
166 | #define _rcu_read_ongoing _rcu_read_ongoing_mb | |
5e77fc1f PM |
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 | |
1de4df4b | 174 | #define rcu_gp_futex rcu_gp_futex_mb |
5e77fc1f PM |
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 | |
1de4df4b MD |
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 | |
5e77fc1f | 191 | |
0376e7b2 PM |
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 | |
1de4df4b | 197 | #define rcu_defer_exit rcu_defer_exit_mb |
0376e7b2 | 198 | |
541d828d LJ |
199 | #define rcu_flavor rcu_flavor_mb |
200 | ||
1de4df4b MD |
201 | #define rcu_yield_active rcu_yield_active_mb |
202 | #define rcu_rand_yield rcu_rand_yield_mb | |
203 | ||
0376e7b2 PM |
204 | #else |
205 | ||
206 | #error "Undefined selection" | |
207 | ||
5e77fc1f PM |
208 | #endif |
209 | ||
210 | #endif /* _URCU_MAP_H */ |