sigev_thread.h revision 156136 
1234852Sbapt/*
2234852Sbapt * Copyright (c) 2005 David Xu <davidxu@freebsd.org>
3234852Sbapt * All rights reserved.
4234852Sbapt *
5234852Sbapt * Redistribution and use in source and binary forms, with or without
6234852Sbapt * 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 156136 2006-03-01 06:37:34Z 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 *, siginfo_t *);
42
43struct sigev_node {
44	LIST_ENTRY(sigev_node)		sn_link;
45	LIST_ENTRY(sigev_node)		sn_allist;
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	struct sigev_thread_node *	sn_tn;
54};
55
56struct sigev_thread_attr {
57	int	sna_policy;
58	int	sna_inherit;
59	int	sna_prio;
60	int	sna_scope;
61	size_t	sna_stacksize;
62	void	*sna_stackaddr;
63	size_t	sna_guardsize;
64};
65
66struct sigev_thread_node {
67	TAILQ_ENTRY(sigev_thread_node)	tn_link;
68	pthread_t			tn_thread;
69	struct sigev_node		*tn_cur;
70	struct sigev_thread_attr	tn_sna;
71	long				tn_lwpid;
72	pthread_cond_t			tn_cv;
73	jmp_buf				tn_jbuf;
74};
75
76#define	SNF_WORKING		0x01
77#define	SNF_REMOVED		0x02
78#define SNF_ONESHOT		0x04
79
80#define	SIGEV_SIGSERVICE	(SIGTHR+1)
81
82int	__sigev_check_init();
83struct sigev_node *__sigev_alloc(int, const struct sigevent *);
84struct sigev_node *__sigev_find(int, sigev_id_t);
85void	__sigev_get_sigevent(struct sigev_node *, struct sigevent *,
86		sigev_id_t);
87int	__sigev_register(struct sigev_node *);
88int	__sigev_delete(int, sigev_id_t);
89int	__sigev_delete_node(struct sigev_node *);
90int	__sigev_list_lock(void);
91int	__sigev_list_unlock(void);
92int	__sigev_thread_list_lock(void);
93int	__sigev_thread_list_unlock(void);
94void	__sigev_free(struct sigev_node *);
95
96#endif
97