| 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_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 | |
| 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 | |
| 98 | #elif defined(RCU_SIGNAL) |
| 99 | |
| 100 | #define rcu_read_lock rcu_read_lock_sig |
| 101 | #define _rcu_read_lock _rcu_read_lock_sig |
| 102 | #define rcu_read_unlock rcu_read_unlock_sig |
| 103 | #define _rcu_read_unlock _rcu_read_unlock_sig |
| 104 | #define rcu_register_thread rcu_register_thread_sig |
| 105 | #define rcu_unregister_thread rcu_unregister_thread_sig |
| 106 | #define rcu_init rcu_init_sig |
| 107 | #define rcu_exit rcu_exit_sig |
| 108 | #define synchronize_rcu synchronize_rcu_sig |
| 109 | #define rcu_reader rcu_reader_sig |
| 110 | #define rcu_gp_ctr rcu_gp_ctr_sig |
| 111 | |
| 112 | #define get_cpu_call_rcu_data get_cpu_call_rcu_data_sig |
| 113 | #define get_call_rcu_thread get_call_rcu_thread_sig |
| 114 | #define create_call_rcu_data create_call_rcu_data_sig |
| 115 | #define set_cpu_call_rcu_data set_cpu_call_rcu_data_sig |
| 116 | #define get_default_call_rcu_data get_default_call_rcu_data_sig |
| 117 | #define get_call_rcu_data get_call_rcu_data_sig |
| 118 | #define get_thread_call_rcu_data get_thread_call_rcu_data_sig |
| 119 | #define set_thread_call_rcu_data set_thread_call_rcu_data_sig |
| 120 | #define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_sig |
| 121 | #define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_sig |
| 122 | #define call_rcu call_rcu_sig |
| 123 | |
| 124 | #define defer_rcu defer_rcu_sig |
| 125 | #define rcu_defer_register_thread rcu_defer_register_thread_sig |
| 126 | #define rcu_defer_unregister_thread rcu_defer_unregister_thread_sig |
| 127 | #define rcu_defer_barrier rcu_defer_barrier_sig |
| 128 | #define rcu_defer_barrier_thread rcu_defer_barrier_thread_sig |
| 129 | |
| 130 | #elif defined(RCU_MB) |
| 131 | |
| 132 | #define rcu_read_lock rcu_read_lock_mb |
| 133 | #define _rcu_read_lock _rcu_read_lock_mb |
| 134 | #define rcu_read_unlock rcu_read_unlock_mb |
| 135 | #define _rcu_read_unlock _rcu_read_unlock_mb |
| 136 | #define rcu_register_thread rcu_register_thread_mb |
| 137 | #define rcu_unregister_thread rcu_unregister_thread_mb |
| 138 | #define rcu_init rcu_init_mb |
| 139 | #define rcu_exit rcu_exit_mb |
| 140 | #define synchronize_rcu synchronize_rcu_mb |
| 141 | #define rcu_reader rcu_reader_mb |
| 142 | #define rcu_gp_ctr rcu_gp_ctr_mb |
| 143 | |
| 144 | #define get_cpu_call_rcu_data get_cpu_call_rcu_data_mb |
| 145 | #define get_call_rcu_thread get_call_rcu_thread_mb |
| 146 | #define create_call_rcu_data create_call_rcu_data_mb |
| 147 | #define set_cpu_call_rcu_data set_cpu_call_rcu_data_mb |
| 148 | #define get_default_call_rcu_data get_default_call_rcu_data_mb |
| 149 | #define get_call_rcu_data get_call_rcu_data_mb |
| 150 | #define get_thread_call_rcu_data get_thread_call_rcu_data_mb |
| 151 | #define set_thread_call_rcu_data set_thread_call_rcu_data_mb |
| 152 | #define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_mb |
| 153 | #define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_mb |
| 154 | #define call_rcu call_rcu_mb |
| 155 | |
| 156 | #define defer_rcu defer_rcu_mb |
| 157 | #define rcu_defer_register_thread rcu_defer_register_thread_mb |
| 158 | #define rcu_defer_unregister_thread rcu_defer_unregister_thread_mb |
| 159 | #define rcu_defer_barrier rcu_defer_barrier_mb |
| 160 | #define rcu_defer_barrier_thread rcu_defer_barrier_thread_mb |
| 161 | |
| 162 | #else |
| 163 | |
| 164 | #error "Undefined selection" |
| 165 | |
| 166 | #endif |
| 167 | |
| 168 | #endif /* _URCU_MAP_H */ |