/usr/include/urcu/rculfqueue.h is in liburcu-dev 0.8.5-1.
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 | #ifndef _URCU_RCULFQUEUE_H
#define _URCU_RCULFQUEUE_H
/*
* rculfqueue.h
*
* Userspace RCU library - Lock-Free RCU Queue
*
* Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* 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 <assert.h>
#include <urcu-call-rcu.h>
#ifdef __cplusplus
extern "C" {
#endif
struct cds_lfq_queue_rcu;
struct cds_lfq_node_rcu {
struct cds_lfq_node_rcu *next;
int dummy;
};
struct cds_lfq_queue_rcu {
struct cds_lfq_node_rcu *head, *tail;
void (*queue_call_rcu)(struct rcu_head *head,
void (*func)(struct rcu_head *head));
};
#ifdef _LGPL_SOURCE
#include <urcu/static/rculfqueue.h>
#define cds_lfq_node_init_rcu _cds_lfq_node_init_rcu
#define cds_lfq_init_rcu _cds_lfq_init_rcu
#define cds_lfq_destroy_rcu _cds_lfq_destroy_rcu
#define cds_lfq_enqueue_rcu _cds_lfq_enqueue_rcu
#define cds_lfq_dequeue_rcu _cds_lfq_dequeue_rcu
#else /* !_LGPL_SOURCE */
extern void cds_lfq_node_init_rcu(struct cds_lfq_node_rcu *node);
extern void cds_lfq_init_rcu(struct cds_lfq_queue_rcu *q,
void queue_call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *head)));
/*
* The queue should be emptied before calling destroy.
*
* Return 0 on success, -EPERM if queue is not empty.
*/
extern int cds_lfq_destroy_rcu(struct cds_lfq_queue_rcu *q);
/*
* Should be called under rcu read lock critical section.
*/
extern void cds_lfq_enqueue_rcu(struct cds_lfq_queue_rcu *q,
struct cds_lfq_node_rcu *node);
/*
* Should be called under rcu read lock critical section.
*
* The caller must wait for a grace period to pass before freeing the returned
* node or modifying the cds_lfq_node_rcu structure.
* Returns NULL if queue is empty.
*/
extern
struct cds_lfq_node_rcu *cds_lfq_dequeue_rcu(struct cds_lfq_queue_rcu *q);
#endif /* !_LGPL_SOURCE */
#ifdef __cplusplus
}
#endif
#endif /* _URCU_RCULFQUEUE_H */
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