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-pointer-static.h for pointer publication headers.
40 #include <urcu-pointer.h>
49 * Each thread containing read-side critical sections must be registered
50 * with rcu_register_thread() before calling rcu_read_lock().
51 * rcu_unregister_thread() should be called before the thread exits.
56 #include <urcu-static.h>
59 * Mappings for static use of the userspace RCU library.
60 * Should only be used in LGPL-compatible code.
67 * Mark the beginning and end of a read-side critical section.
68 * DON'T FORGET TO USE RCU_REGISTER/UNREGISTER_THREAD() FOR EACH THREAD WITH
69 * READ-SIDE CRITICAL SECTION.
71 #define rcu_read_lock() _rcu_read_lock()
72 #define rcu_read_unlock() _rcu_read_unlock()
74 #else /* !_LGPL_SOURCE */
77 * library wrappers to be used by non-LGPL compatible source code.
78 * See LGPL-only urcu-pointer-static.h for documentation.
81 extern void rcu_read_lock(void);
82 extern void rcu_read_unlock(void);
84 #endif /* !_LGPL_SOURCE */
86 extern void synchronize_rcu(void);
89 * Reader thread registration.
91 extern void rcu_register_thread(void);
92 extern void rcu_unregister_thread(void);
95 * Explicit rcu initialization, for "early" use within library constructors.
97 extern void rcu_init(void);
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