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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
38 struct sigev_thread;
39 struct sigev_node;
40
41 typedef uintptr_t       sigev_id_t;
42 typedef void            (*sigev_dispatch_t)(struct sigev_node *);
43
44 struct 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
59 struct 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
72 int     __sigev_check_init();
73 struct sigev_node *__sigev_alloc(int, const struct sigevent *,
74         struct sigev_node *, int);
75 struct sigev_node *__sigev_find(int, sigev_id_t);
76 void    __sigev_get_sigevent(struct sigev_node *, struct sigevent *,
77                 sigev_id_t);
78 int     __sigev_register(struct sigev_node *);
79 int     __sigev_delete(int, sigev_id_t);
80 int     __sigev_delete_node(struct sigev_node *);
81 void    __sigev_list_lock(void);
82 void    __sigev_list_unlock(void);
83 void    __sigev_free(struct sigev_node *);
84
85 #endif