[urcu.git] / urcu / map / urcu.h

#ifndef _URCU_MAP_H
#define _URCU_MAP_H

/*
 * urcu-map.h
 *
 * Userspace RCU header -- name mapping to allow multiple flavors to be
 * used in the same executable.
 *
 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
 *
 * LGPL-compatible code should include this header with :
 *
 * #define _LGPL_SOURCE
 * #include <urcu.h>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * IBM's contributions to this file may be relicensed under LGPLv2 or later.
 */

/* Mapping macros to allow multiple flavors in a single binary. */

#if !defined(RCU_MEMBARRIER) && !defined(RCU_SIGNAL) && !defined(RCU_MB)
#define RCU_MEMBARRIER
#endif

/*
 * RCU_MEMBARRIER is only possibly available on Linux. Fallback to
 * RCU_MB
 * otherwise.
 */
#if !defined(__linux__) && defined(RCU_MEMBARRIER)
#undef RCU_MEMBARRIER
#define RCU_MB
#endif

#ifdef RCU_MEMBARRIER
#include <syscall.h>

/* If the headers do not support SYS_membarrier, statically use RCU_MB */
#ifdef SYS_membarrier
# define MEMBARRIER_EXPEDITED		(1 << 0)
# define MEMBARRIER_DELAYED		(1 << 1)
# define MEMBARRIER_QUERY		(1 << 16)
# define membarrier(...)		syscall(SYS_membarrier, __VA_ARGS__)
#else
# undef RCU_MEMBARRIER
# define RCU_MB
#endif
#endif

#ifdef RCU_MEMBARRIER

#define rcu_read_lock			rcu_read_lock_memb
#define _rcu_read_lock			_rcu_read_lock_memb
#define rcu_read_unlock			rcu_read_unlock_memb
#define _rcu_read_unlock		_rcu_read_unlock_memb
#define rcu_register_thread		rcu_register_thread_memb
#define rcu_unregister_thread		rcu_unregister_thread_memb
#define rcu_init			rcu_init_memb
#define rcu_exit			rcu_exit_memb
#define synchronize_rcu			synchronize_rcu_memb
#define rcu_reader			rcu_reader_memb
#define rcu_gp_ctr			rcu_gp_ctr_memb
#define rcu_gp_futex			rcu_gp_futex_memb

#define get_cpu_call_rcu_data		get_cpu_call_rcu_data_memb
#define get_call_rcu_thread		get_call_rcu_thread_memb
#define create_call_rcu_data		create_call_rcu_data_memb
#define set_cpu_call_rcu_data		set_cpu_call_rcu_data_memb
#define get_default_call_rcu_data	get_default_call_rcu_data_memb
#define get_call_rcu_data		get_call_rcu_data_memb
#define get_thread_call_rcu_data	get_thread_call_rcu_data_memb
#define set_thread_call_rcu_data	set_thread_call_rcu_data_memb
#define create_all_cpu_call_rcu_data	create_all_cpu_call_rcu_data_memb
#define free_all_cpu_call_rcu_data	free_all_cpu_call_rcu_data_memb
#define call_rcu			call_rcu_memb
#define call_rcu_data_free		call_rcu_data_free_memb
#define call_rcu_before_fork		call_rcu_before_fork_memb
#define call_rcu_after_fork_parent	call_rcu_after_fork_parent_memb
#define call_rcu_after_fork_child	call_rcu_after_fork_child_memb

#define defer_rcu			defer_rcu_memb
#define rcu_defer_register_thread	rcu_defer_register_thread_memb
#define rcu_defer_unregister_thread	rcu_defer_unregister_thread_memb
#define rcu_defer_barrier		rcu_defer_barrier_memb
#define rcu_defer_barrier_thread	rcu_defer_barrier_thread_memb
#define rcu_defer_exit			rcu_defer_exit_memb

#define rcu_flavor			rcu_flavor_memb

#define rcu_yield_active		rcu_yield_active_memb
#define rcu_rand_yield			rcu_rand_yield_memb

/* Specific to MEMBARRIER flavor */
#define rcu_has_sys_membarrier		rcu_has_sys_membarrier_memb

#elif defined(RCU_SIGNAL)

#define rcu_read_lock			rcu_read_lock_sig
#define _rcu_read_lock			_rcu_read_lock_sig
#define rcu_read_unlock			rcu_read_unlock_sig
#define _rcu_read_unlock		_rcu_read_unlock_sig
#define rcu_register_thread		rcu_register_thread_sig
#define rcu_unregister_thread		rcu_unregister_thread_sig
#define rcu_init			rcu_init_sig
#define rcu_exit			rcu_exit_sig
#define synchronize_rcu			synchronize_rcu_sig
#define rcu_reader			rcu_reader_sig
#define rcu_gp_ctr			rcu_gp_ctr_sig
#define rcu_gp_futex			rcu_gp_futex_sig

#define get_cpu_call_rcu_data		get_cpu_call_rcu_data_sig
#define get_call_rcu_thread		get_call_rcu_thread_sig
#define create_call_rcu_data		create_call_rcu_data_sig
#define set_cpu_call_rcu_data		set_cpu_call_rcu_data_sig
#define get_default_call_rcu_data	get_default_call_rcu_data_sig
#define get_call_rcu_data		get_call_rcu_data_sig
#define get_thread_call_rcu_data	get_thread_call_rcu_data_sig
#define set_thread_call_rcu_data	set_thread_call_rcu_data_sig
#define create_all_cpu_call_rcu_data	create_all_cpu_call_rcu_data_sig
#define free_all_cpu_call_rcu_data	free_all_cpu_call_rcu_data_sig
#define call_rcu			call_rcu_sig
#define call_rcu_data_free		call_rcu_data_free_sig
#define call_rcu_before_fork		call_rcu_before_fork_sig
#define call_rcu_after_fork_parent	call_rcu_after_fork_parent_sig
#define call_rcu_after_fork_child	call_rcu_after_fork_child_sig

#define defer_rcu			defer_rcu_sig
#define rcu_defer_register_thread	rcu_defer_register_thread_sig
#define rcu_defer_unregister_thread	rcu_defer_unregister_thread_sig
#define rcu_defer_barrier		rcu_defer_barrier_sig
#define rcu_defer_barrier_thread	rcu_defer_barrier_thread_sig
#define rcu_defer_exit			rcu_defer_exit_sig

#define rcu_flavor			rcu_flavor_sig

#define rcu_yield_active		rcu_yield_active_sig
#define rcu_rand_yield			rcu_rand_yield_sig

#elif defined(RCU_MB)

#define rcu_read_lock			rcu_read_lock_mb
#define _rcu_read_lock			_rcu_read_lock_mb
#define rcu_read_unlock			rcu_read_unlock_mb
#define _rcu_read_unlock		_rcu_read_unlock_mb
#define rcu_register_thread		rcu_register_thread_mb
#define rcu_unregister_thread		rcu_unregister_thread_mb
#define rcu_init			rcu_init_mb
#define rcu_exit			rcu_exit_mb
#define synchronize_rcu			synchronize_rcu_mb
#define rcu_reader			rcu_reader_mb
#define rcu_gp_ctr			rcu_gp_ctr_mb
#define rcu_gp_futex			rcu_gp_futex_mb

#define get_cpu_call_rcu_data		get_cpu_call_rcu_data_mb
#define get_call_rcu_thread		get_call_rcu_thread_mb
#define create_call_rcu_data		create_call_rcu_data_mb
#define set_cpu_call_rcu_data		set_cpu_call_rcu_data_mb
#define get_default_call_rcu_data	get_default_call_rcu_data_mb
#define get_call_rcu_data		get_call_rcu_data_mb
#define get_thread_call_rcu_data	get_thread_call_rcu_data_mb
#define set_thread_call_rcu_data	set_thread_call_rcu_data_mb
#define create_all_cpu_call_rcu_data	create_all_cpu_call_rcu_data_mb
#define free_all_cpu_call_rcu_data	free_all_cpu_call_rcu_data_mb
#define call_rcu			call_rcu_mb
#define call_rcu_data_free		call_rcu_data_free_mb
#define call_rcu_before_fork		call_rcu_before_fork_mb
#define call_rcu_after_fork_parent	call_rcu_after_fork_parent_mb
#define call_rcu_after_fork_child	call_rcu_after_fork_child_mb

#define defer_rcu			defer_rcu_mb
#define rcu_defer_register_thread	rcu_defer_register_thread_mb
#define rcu_defer_unregister_thread	rcu_defer_unregister_thread_mb
#define rcu_defer_barrier		rcu_defer_barrier_mb
#define rcu_defer_barrier_thread	rcu_defer_barrier_thread_mb
#define rcu_defer_exit			rcu_defer_exit_mb

#define rcu_flavor			rcu_flavor_mb

#define rcu_yield_active		rcu_yield_active_mb
#define rcu_rand_yield			rcu_rand_yield_mb

#else

#error "Undefined selection"

#endif

#endif /* _URCU_MAP_H */
Commit	Line	Data
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
0376e7b2 PM	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
	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
1de4df4b	79	#define rcu_gp_futex rcu_gp_futex_memb
5e77fc1f PM	80
	81	#define get_cpu_call_rcu_data get_cpu_call_rcu_data_memb
	82	#define get_call_rcu_thread get_call_rcu_thread_memb
	83	#define create_call_rcu_data create_call_rcu_data_memb
	84	#define set_cpu_call_rcu_data set_cpu_call_rcu_data_memb
	85	#define get_default_call_rcu_data get_default_call_rcu_data_memb
	86	#define get_call_rcu_data get_call_rcu_data_memb
	87	#define get_thread_call_rcu_data get_thread_call_rcu_data_memb
	88	#define set_thread_call_rcu_data set_thread_call_rcu_data_memb
	89	#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_memb
	90	#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_memb
	91	#define call_rcu call_rcu_memb
1de4df4b MD	92	#define call_rcu_data_free call_rcu_data_free_memb
	93	#define call_rcu_before_fork call_rcu_before_fork_memb
	94	#define call_rcu_after_fork_parent call_rcu_after_fork_parent_memb
	95	#define call_rcu_after_fork_child call_rcu_after_fork_child_memb
5e77fc1f	96
0376e7b2 PM	97	#define defer_rcu defer_rcu_memb
	98	#define rcu_defer_register_thread rcu_defer_register_thread_memb
	99	#define rcu_defer_unregister_thread rcu_defer_unregister_thread_memb
	100	#define rcu_defer_barrier rcu_defer_barrier_memb
	101	#define rcu_defer_barrier_thread rcu_defer_barrier_thread_memb
1de4df4b	102	#define rcu_defer_exit rcu_defer_exit_memb
0376e7b2	103
541d828d LJ	104	#define rcu_flavor rcu_flavor_memb
541d828d LJ	105
1de4df4b MD	106	#define rcu_yield_active rcu_yield_active_memb
	107	#define rcu_rand_yield rcu_rand_yield_memb
	108
	109	/* Specific to MEMBARRIER flavor */
	110	#define rcu_has_sys_membarrier rcu_has_sys_membarrier_memb
	111
5e77fc1f PM	112	#elif defined(RCU_SIGNAL)
	113
	114	#define rcu_read_lock rcu_read_lock_sig
	115	#define _rcu_read_lock _rcu_read_lock_sig
	116	#define rcu_read_unlock rcu_read_unlock_sig
	117	#define _rcu_read_unlock _rcu_read_unlock_sig
	118	#define rcu_register_thread rcu_register_thread_sig
	119	#define rcu_unregister_thread rcu_unregister_thread_sig
	120	#define rcu_init rcu_init_sig
	121	#define rcu_exit rcu_exit_sig
	122	#define synchronize_rcu synchronize_rcu_sig
	123	#define rcu_reader rcu_reader_sig
	124	#define rcu_gp_ctr rcu_gp_ctr_sig
1de4df4b	125	#define rcu_gp_futex rcu_gp_futex_sig
5e77fc1f PM	126
	127	#define get_cpu_call_rcu_data get_cpu_call_rcu_data_sig
	128	#define get_call_rcu_thread get_call_rcu_thread_sig
	129	#define create_call_rcu_data create_call_rcu_data_sig
	130	#define set_cpu_call_rcu_data set_cpu_call_rcu_data_sig
	131	#define get_default_call_rcu_data get_default_call_rcu_data_sig
	132	#define get_call_rcu_data get_call_rcu_data_sig
	133	#define get_thread_call_rcu_data get_thread_call_rcu_data_sig
	134	#define set_thread_call_rcu_data set_thread_call_rcu_data_sig
	135	#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_sig
	136	#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_sig
	137	#define call_rcu call_rcu_sig
1de4df4b MD	138	#define call_rcu_data_free call_rcu_data_free_sig
	139	#define call_rcu_before_fork call_rcu_before_fork_sig
	140	#define call_rcu_after_fork_parent call_rcu_after_fork_parent_sig
	141	#define call_rcu_after_fork_child call_rcu_after_fork_child_sig
5e77fc1f	142
0376e7b2 PM	143	#define defer_rcu defer_rcu_sig
	144	#define rcu_defer_register_thread rcu_defer_register_thread_sig
	145	#define rcu_defer_unregister_thread rcu_defer_unregister_thread_sig
	146	#define rcu_defer_barrier rcu_defer_barrier_sig
	147	#define rcu_defer_barrier_thread rcu_defer_barrier_thread_sig
1de4df4b	148	#define rcu_defer_exit rcu_defer_exit_sig
0376e7b2	149
541d828d LJ	150	#define rcu_flavor rcu_flavor_sig
541d828d LJ	151
1de4df4b MD	152	#define rcu_yield_active rcu_yield_active_sig
	153	#define rcu_rand_yield rcu_rand_yield_sig
	154
5e77fc1f PM	155	#elif defined(RCU_MB)
	156
	157	#define rcu_read_lock rcu_read_lock_mb
	158	#define _rcu_read_lock _rcu_read_lock_mb
	159	#define rcu_read_unlock rcu_read_unlock_mb
	160	#define _rcu_read_unlock _rcu_read_unlock_mb
	161	#define rcu_register_thread rcu_register_thread_mb
	162	#define rcu_unregister_thread rcu_unregister_thread_mb
	163	#define rcu_init rcu_init_mb
	164	#define rcu_exit rcu_exit_mb
	165	#define synchronize_rcu synchronize_rcu_mb
	166	#define rcu_reader rcu_reader_mb
	167	#define rcu_gp_ctr rcu_gp_ctr_mb
1de4df4b	168	#define rcu_gp_futex rcu_gp_futex_mb
5e77fc1f PM	169
	170	#define get_cpu_call_rcu_data get_cpu_call_rcu_data_mb
	171	#define get_call_rcu_thread get_call_rcu_thread_mb
	172	#define create_call_rcu_data create_call_rcu_data_mb
	173	#define set_cpu_call_rcu_data set_cpu_call_rcu_data_mb
	174	#define get_default_call_rcu_data get_default_call_rcu_data_mb
	175	#define get_call_rcu_data get_call_rcu_data_mb
	176	#define get_thread_call_rcu_data get_thread_call_rcu_data_mb
	177	#define set_thread_call_rcu_data set_thread_call_rcu_data_mb
	178	#define create_all_cpu_call_rcu_data create_all_cpu_call_rcu_data_mb
	179	#define free_all_cpu_call_rcu_data free_all_cpu_call_rcu_data_mb
	180	#define call_rcu call_rcu_mb
1de4df4b MD	181	#define call_rcu_data_free call_rcu_data_free_mb
	182	#define call_rcu_before_fork call_rcu_before_fork_mb
	183	#define call_rcu_after_fork_parent call_rcu_after_fork_parent_mb
	184	#define call_rcu_after_fork_child call_rcu_after_fork_child_mb
5e77fc1f	185
0376e7b2 PM	186	#define defer_rcu defer_rcu_mb
	187	#define rcu_defer_register_thread rcu_defer_register_thread_mb
	188	#define rcu_defer_unregister_thread rcu_defer_unregister_thread_mb
	189	#define rcu_defer_barrier rcu_defer_barrier_mb
	190	#define rcu_defer_barrier_thread rcu_defer_barrier_thread_mb
1de4df4b	191	#define rcu_defer_exit rcu_defer_exit_mb
0376e7b2	192
541d828d LJ	193	#define rcu_flavor rcu_flavor_mb
541d828d LJ	194
1de4df4b MD	195	#define rcu_yield_active rcu_yield_active_mb
	196	#define rcu_rand_yield rcu_rand_yield_mb
	197
0376e7b2 PM	198	#else
	199
	200	#error "Undefined selection"
	201
5e77fc1f PM	202	#endif
	203
	204	#endif /* _URCU_MAP_H */