sigev_thread.h revision 156267 
1/*
2 * Copyright (c) 2005 David Xu <davidxu@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/lib/librt/sigev_thread.h 156267 2006-03-04 00:18:19Z davidxu $
27 *
28 */
29
30#ifndef _SIGEV_THREAD_H_
31#define _SIGEV_THREAD_H_
32
33#include <sys/types.h>
34#include <sys/queue.h>
35#include <setjmp.h>
36
37struct sigev_thread_node;
38struct sigev_node;
39
40typedef uintptr_t	sigev_id_t;
41typedef void		(*sigev_dispatch_t)(struct sigev_node *);
42
43struct sigev_node {
44	LIST_ENTRY(sigev_node)		sn_link;
45	LIST_ENTRY(sigev_node)		sn_allist;
46	TAILQ_ENTRY(sigev_node)		sn_actq;
47	int				sn_type;
48	sigev_id_t			sn_id;
49	sigev_dispatch_t		sn_dispatch;
50	union sigval			sn_value;
51	void 				*sn_func;
52	int				sn_flags;
53	int				sn_gen;
54	int				sn_usethreadpool;
55	siginfo_t			sn_info;
56	struct sigev_thread_node *	sn_tn;
57};
58
59struct sigev_thread_attr {
60	int	sna_policy;
61	int	sna_inherit;
62	int	sna_prio;
63	size_t	sna_stacksize;
64	void	*sna_stackaddr;
65	size_t	sna_guardsize;
66};
67
68struct sigev_thread_node {
69	TAILQ_ENTRY(sigev_thread_node)	tn_link;
70	pthread_t			tn_thread;
71	struct sigev_node		*tn_cur;
72	struct sigev_thread_attr	tn_sna;
73	int				tn_refcount;
74	long				tn_lwpid;
75	jmp_buf				tn_jbuf;
76};
77
78#define	SNF_WORKING		0x01
79#define	SNF_REMOVED		0x02
80#define	SNF_ONESHOT		0x04
81#define	SNF_ACTQ		0x08
82#define	SNF_THREADPOOL		0x10
83
84#define	SIGEV_SIGSERVICE	(SIGTHR+1)
85
86int	__sigev_check_init();
87struct sigev_node *__sigev_alloc(int, const struct sigevent *,
88	struct sigev_node *, int usethreadpool);
89struct sigev_node *__sigev_find(int, sigev_id_t);
90void	__sigev_get_sigevent(struct sigev_node *, struct sigevent *,
91		sigev_id_t);
92int	__sigev_register(struct sigev_node *);
93int	__sigev_delete(int, sigev_id_t);
94int	__sigev_delete_node(struct sigev_node *);
95int	__sigev_list_lock(void);
96int	__sigev_list_unlock(void);
97int	__sigev_thread_list_lock(void);
98int	__sigev_thread_list_unlock(void);
99void	__sigev_free(struct sigev_node *);
100
101#endif
102