9 * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
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.
39 #include <urcu-static.h>
42 * Mappings for static use of the userspace RCU library.
43 * Should only be used in LGPL-compatible code.
46 #define rcu_dereference _rcu_dereference
47 #define rcu_read_lock _rcu_read_lock
48 #define rcu_read_unlock _rcu_read_unlock
50 #define rcu_assign_pointer _rcu_assign_pointer
51 #define rcu_xchg_pointer _rcu_xchg_pointer
52 #define rcu_publish_content _rcu_publish_content
54 #else /* !_LGPL_SOURCE */
57 * library wrappers to be used by non-LGPL compatible source code.
60 extern void rcu_read_lock(void);
61 extern void rcu_read_unlock(void);
63 extern void *rcu_dereference(void *p
);
65 extern void *rcu_assign_pointer_sym(void **p
, void *v
);
67 #define rcu_assign_pointer(p, v) \
68 rcu_assign_pointer_sym((void **)(p), (v))
70 extern void *rcu_xchg_pointer_sym(void **p
, void *v
);
71 #define rcu_xchg_pointer(p, v) \
72 rcu_xchg_pointer_sym((void **)(p), (v))
74 extern void *rcu_publish_content_sym(void **p
, void *v
);
75 #define rcu_publish_content(p, v) \
76 rcu_publish_content_sym((void **)(p), (v))
78 #endif /* !_LGPL_SOURCE */
80 extern void synchronize_rcu(void);
83 * Reader thread registration.
85 extern void rcu_register_thread(void);
86 extern void rcu_unregister_thread(void);
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