1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2005 David Xu <davidxu@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 *
30 */
31
32#ifndef _SIGEV_THREAD_H_
33#define _SIGEV_THREAD_H_
34
35#include <sys/types.h>
36#include <sys/queue.h>
37
38struct sigev_thread;
39struct sigev_node;
40
41typedef uintptr_t	sigev_id_t;
42typedef void		(*sigev_dispatch_t)(struct sigev_node *);
43
44struct sigev_node {
45	LIST_ENTRY(sigev_node)		sn_link;
46	int				sn_type;
47	sigev_id_t			sn_id;
48	sigev_dispatch_t		sn_dispatch;
49	union sigval			sn_value;
50	void 				*sn_func;
51	int				sn_flags;
52	int				sn_gen;
53	siginfo_t			sn_info;
54	pthread_attr_t			sn_attr;
55	struct sigev_thread		*sn_tn;
56};
57
58
59struct sigev_thread {
60	LIST_ENTRY(sigev_thread)	tn_link;
61	pthread_t			tn_thread;
62	struct sigev_node		*tn_cur;
63	int				tn_refcount;
64	long				tn_lwpid;
65	pthread_cond_t			tn_cv;
66};
67
68#define	SNF_WORKING		0x01
69#define	SNF_REMOVED		0x02
70#define	SNF_SYNC		0x04
71
72int	__sigev_check_init();
73struct sigev_node *__sigev_alloc(int, const struct sigevent *,
74	struct sigev_node *, int);
75struct sigev_node *__sigev_find(int, sigev_id_t);
76void	__sigev_get_sigevent(struct sigev_node *, struct sigevent *,
77		sigev_id_t);
78int	__sigev_register(struct sigev_node *);
79int	__sigev_delete(int, sigev_id_t);
80int	__sigev_delete_node(struct sigev_node *);
81void	__sigev_list_lock(void);
82void	__sigev_list_unlock(void);
83void	__sigev_free(struct sigev_node *);
84
85#endif
86