Add rcu_flavor
[urcu.git] / urcu / map / urcu.h
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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
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39#endif
40
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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
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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_register_thread rcu_register_thread_memb
73#define rcu_unregister_thread rcu_unregister_thread_memb
74#define rcu_init rcu_init_memb
75#define rcu_exit rcu_exit_memb
76#define synchronize_rcu synchronize_rcu_memb
77#define rcu_reader rcu_reader_memb
78#define rcu_gp_ctr rcu_gp_ctr_memb
79
80#define get_cpu_call_rcu_data get_cpu_call_rcu_data_memb
81#define get_call_rcu_thread get_call_rcu_thread_memb
82#define create_call_rcu_data create_call_rcu_data_memb
83#define set_cpu_call_rcu_data set_cpu_call_rcu_data_memb
84#define get_default_call_rcu_data get_default_call_rcu_data_memb
85#define get_call_rcu_data get_call_rcu_data_memb
86#define get_thread_call_rcu_data get_thread_call_rcu_data_memb
87#define set_thread_call_rcu_data set_thread_call_rcu_data_memb
88#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_memb
89#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_memb
90#define call_rcu call_rcu_memb
91
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92#define defer_rcu defer_rcu_memb
93#define rcu_defer_register_thread rcu_defer_register_thread_memb
94#define rcu_defer_unregister_thread rcu_defer_unregister_thread_memb
95#define rcu_defer_barrier rcu_defer_barrier_memb
96#define rcu_defer_barrier_thread rcu_defer_barrier_thread_memb
97
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98#define rcu_flavor rcu_flavor_memb
99
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100#elif defined(RCU_SIGNAL)
101
102#define rcu_read_lock rcu_read_lock_sig
103#define _rcu_read_lock _rcu_read_lock_sig
104#define rcu_read_unlock rcu_read_unlock_sig
105#define _rcu_read_unlock _rcu_read_unlock_sig
106#define rcu_register_thread rcu_register_thread_sig
107#define rcu_unregister_thread rcu_unregister_thread_sig
108#define rcu_init rcu_init_sig
109#define rcu_exit rcu_exit_sig
110#define synchronize_rcu synchronize_rcu_sig
111#define rcu_reader rcu_reader_sig
112#define rcu_gp_ctr rcu_gp_ctr_sig
113
114#define get_cpu_call_rcu_data get_cpu_call_rcu_data_sig
115#define get_call_rcu_thread get_call_rcu_thread_sig
116#define create_call_rcu_data create_call_rcu_data_sig
117#define set_cpu_call_rcu_data set_cpu_call_rcu_data_sig
118#define get_default_call_rcu_data get_default_call_rcu_data_sig
119#define get_call_rcu_data get_call_rcu_data_sig
120#define get_thread_call_rcu_data get_thread_call_rcu_data_sig
121#define set_thread_call_rcu_data set_thread_call_rcu_data_sig
122#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_sig
123#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_sig
124#define call_rcu call_rcu_sig
125
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126#define defer_rcu defer_rcu_sig
127#define rcu_defer_register_thread rcu_defer_register_thread_sig
128#define rcu_defer_unregister_thread rcu_defer_unregister_thread_sig
129#define rcu_defer_barrier rcu_defer_barrier_sig
130#define rcu_defer_barrier_thread rcu_defer_barrier_thread_sig
131
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132#define rcu_flavor rcu_flavor_sig
133
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134#elif defined(RCU_MB)
135
136#define rcu_read_lock rcu_read_lock_mb
137#define _rcu_read_lock _rcu_read_lock_mb
138#define rcu_read_unlock rcu_read_unlock_mb
139#define _rcu_read_unlock _rcu_read_unlock_mb
140#define rcu_register_thread rcu_register_thread_mb
141#define rcu_unregister_thread rcu_unregister_thread_mb
142#define rcu_init rcu_init_mb
143#define rcu_exit rcu_exit_mb
144#define synchronize_rcu synchronize_rcu_mb
145#define rcu_reader rcu_reader_mb
146#define rcu_gp_ctr rcu_gp_ctr_mb
147
148#define get_cpu_call_rcu_data get_cpu_call_rcu_data_mb
149#define get_call_rcu_thread get_call_rcu_thread_mb
150#define create_call_rcu_data create_call_rcu_data_mb
151#define set_cpu_call_rcu_data set_cpu_call_rcu_data_mb
152#define get_default_call_rcu_data get_default_call_rcu_data_mb
153#define get_call_rcu_data get_call_rcu_data_mb
154#define get_thread_call_rcu_data get_thread_call_rcu_data_mb
155#define set_thread_call_rcu_data set_thread_call_rcu_data_mb
156#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_mb
157#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_mb
158#define call_rcu call_rcu_mb
159
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160#define defer_rcu defer_rcu_mb
161#define rcu_defer_register_thread rcu_defer_register_thread_mb
162#define rcu_defer_unregister_thread rcu_defer_unregister_thread_mb
163#define rcu_defer_barrier rcu_defer_barrier_mb
164#define rcu_defer_barrier_thread rcu_defer_barrier_thread_mb
165
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166#define rcu_flavor rcu_flavor_mb
167
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168#else
169
170#error "Undefined selection"
171
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172#endif
173
174#endif /* _URCU_MAP_H */
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