1/* $OpenBSD: sched.h,v 1.1 2017/10/15 23:40:33 guenther Exp $ */
2
3/* sched.h: POSIX 1003.1b Process Scheduling header */
4
5/*-
6 * Copyright (c) 1996, 1997
7 * HD Associates, Inc. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by HD Associates, Inc
20 * and Jukka Antero Ukkonen.
21 * 4. Neither the name of the author nor the names of any co-contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 */
38
39#ifndef _SCHED_H_
40#define _SCHED_H_
41
42#include <sys/types.h> /* For pid_t */
43#include <time.h> /* Per P1003.4 */
44
45/* Scheduling policies
46 */
47#define SCHED_FIFO 1
48#define SCHED_OTHER 2
49#define SCHED_RR 3
50
51struct sched_param
52{
53 int sched_priority;
54};
55
56__BEGIN_DECLS
57#if 0 /* not yet */
58int sched_setparam(pid_t, const struct sched_param *);
59int sched_getparam(pid_t, struct sched_param *);
60
61int sched_setscheduler(pid_t, int, const struct sched_param *);
62int sched_getscheduler(pid_t);
63#endif
64
65int sched_yield(void);
66int sched_get_priority_max(int);
67int sched_get_priority_min(int);
68
69#if 0 /* not yet */
70struct timespec;
71int sched_rr_get_interval(pid_t, struct timespec *);
72#endif
73__END_DECLS
74
75#endif /* _SCHED_H_ */