9 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 * Copyright (c) 2009 Paul E. McKenney, IBM Corporation.
12 * LGPL-compatible code should include this header with :
14 * #define _LGPL_SOURCE
17 * This library is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU Lesser General Public
19 * License as published by the Free Software Foundation; either
20 * version 2.1 of the License, or (at your option) any later version.
22 * This library is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * Lesser General Public License for more details.
27 * You should have received a copy of the GNU Lesser General Public
28 * License along with this library; if not, write to the Free Software
29 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 * IBM's contributions to this file may be relicensed under LGPLv2 or later.
38 * See urcu-pointer.h and urcu/static/urcu-pointer.h for pointer
39 * publication headers.
41 #include <urcu-pointer.h>
47 #include <urcu/map/urcu.h>
52 * Each thread containing read-side critical sections must be registered
53 * with rcu_register_thread_mb() before calling rcu_read_lock_mb().
54 * rcu_unregister_thread_mb() should be called before the thread exits.
59 #include <urcu/static/urcu.h>
62 * Mappings for static use of the userspace RCU library.
63 * Should only be used in LGPL-compatible code.
70 * Mark the beginning and end of a read-side critical section.
71 * DON'T FORGET TO USE RCU_REGISTER/UNREGISTER_THREAD() FOR EACH THREAD WITH
72 * READ-SIDE CRITICAL SECTION.
75 #define rcu_read_lock_memb _rcu_read_lock
76 #define rcu_read_unlock_memb _rcu_read_unlock
77 #define rcu_read_ongoing_memb _rcu_read_ongoing
78 #elif defined(RCU_SIGNAL)
79 #define rcu_read_lock_sig _rcu_read_lock
80 #define rcu_read_unlock_sig _rcu_read_unlock
81 #define rcu_read_ongoing_sig _rcu_read_ongoing
83 #define rcu_read_lock_mb _rcu_read_lock
84 #define rcu_read_unlock_mb _rcu_read_unlock
85 #define rcu_read_ongoing_mb _rcu_read_ongoing
88 #else /* !_LGPL_SOURCE */
91 * library wrappers to be used by non-LGPL compatible source code.
92 * See LGPL-only urcu/static/urcu-pointer.h for documentation.
95 extern void rcu_read_lock(void);
96 extern void rcu_read_unlock(void);
97 extern int rcu_read_ongoing(void);
99 #endif /* !_LGPL_SOURCE */
101 extern void synchronize_rcu(void);
104 * Reader thread registration.
106 extern void rcu_register_thread(void);
107 extern void rcu_unregister_thread(void);
110 * Explicit rcu initialization, for "early" use within library constructors.
112 extern void rcu_init(void);
115 * Q.S. reporting are no-ops for these URCU flavors.
117 static inline void rcu_quiescent_state(void)
121 static inline void rcu_thread_offline(void)
125 static inline void rcu_thread_online(void)
133 #include <urcu-call-rcu.h>
134 #include <urcu-defer.h>
135 #include <urcu-flavor.h>
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