/usr/include/urcu-defer.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 | #ifndef _URCU_BATCH_H
#define _URCU_BATCH_H
/*
* urcu-defer.h
*
* Userspace RCU header - deferred execution
*
* 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-defer.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
*/
#include <stdlib.h>
#include <pthread.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Note: the defer_rcu() API is currently EXPERIMENTAL. It may change in the
* future.
*
* Important !
*
* Each thread queuing memory reclamation must be registered with
* rcu_defer_register_thread(). rcu_defer_unregister_thread() should be
* called before the thread exits.
*
* *NEVER* use defer_rcu() within a RCU read-side critical section, because this
* primitive need to call synchronize_rcu() if the thread queue is full.
*/
extern void defer_rcu(void (*fct)(void *p), void *p);
/*
* Thread registration for reclamation.
*/
extern int rcu_defer_register_thread(void);
extern void rcu_defer_unregister_thread(void);
extern void rcu_defer_barrier(void);
extern void rcu_defer_barrier_thread(void);
#ifdef __cplusplus
}
#endif
#endif /* _URCU_BATCH_H */
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