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_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 #define rcu_flavor                      rcu_flavor_memb
  99
 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
 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
 132 #define rcu_flavor                      rcu_flavor_sig
 133
 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
 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
 166 #define rcu_flavor                      rcu_flavor_mb
 167
 168 #else
 169
 170 #error "Undefined selection"
 171
 172 #endif
 173
 174 #endif /* _URCU_MAP_H */