/usr/include/urcu.h is in liburcu-dev 0.7.12-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | #ifndef _URCU_H
#define _URCU_H
/*
* urcu.h
*
* Userspace RCU header
*
* 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.
*/
#include <stdlib.h>
#include <pthread.h>
/*
* See urcu-pointer.h and urcu/static/urcu-pointer.h for pointer
* publication headers.
*/
#include <urcu-pointer.h>
#ifdef __cplusplus
extern "C" {
#endif
#include <urcu/map/urcu.h>
/*
* Important !
*
* Each thread containing read-side critical sections must be registered
* with rcu_register_thread_mb() before calling rcu_read_lock_mb().
* rcu_unregister_thread_mb() should be called before the thread exits.
*/
#ifdef _LGPL_SOURCE
#include <urcu/static/urcu.h>
/*
* Mappings for static use of the userspace RCU library.
* Should only be used in LGPL-compatible code.
*/
/*
* rcu_read_lock()
* rcu_read_unlock()
*
* Mark the beginning and end of a read-side critical section.
* DON'T FORGET TO USE RCU_REGISTER/UNREGISTER_THREAD() FOR EACH THREAD WITH
* READ-SIDE CRITICAL SECTION.
*/
#ifdef RCU_MEMBARRIER
#define rcu_read_lock_memb _rcu_read_lock
#define rcu_read_unlock_memb _rcu_read_unlock
#elif defined(RCU_SIGNAL)
#define rcu_read_lock_sig _rcu_read_lock
#define rcu_read_unlock_sig _rcu_read_unlock
#elif defined(RCU_MB)
#define rcu_read_lock_mb _rcu_read_lock
#define rcu_read_unlock_mb _rcu_read_unlock
#endif
#else /* !_LGPL_SOURCE */
/*
* library wrappers to be used by non-LGPL compatible source code.
* See LGPL-only urcu/static/urcu-pointer.h for documentation.
*/
extern void rcu_read_lock(void);
extern void rcu_read_unlock(void);
#endif /* !_LGPL_SOURCE */
extern void synchronize_rcu(void);
/*
* Reader thread registration.
*/
extern void rcu_register_thread(void);
extern void rcu_unregister_thread(void);
/*
* Explicit rcu initialization, for "early" use within library constructors.
*/
extern void rcu_init(void);
/*
* Q.S. reporting are no-ops for these URCU flavors.
*/
static inline void rcu_quiescent_state(void)
{
}
static inline void rcu_thread_offline(void)
{
}
static inline void rcu_thread_online(void)
{
}
#ifdef __cplusplus
}
#endif
#include <urcu-call-rcu.h>
#include <urcu-defer.h>
#include <urcu-flavor.h>
#endif /* _URCU_H */
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