FreeBSD/Linux Kernel Cross Reference
sys/posix4/sched.h
1 #ifndef _SCHED_H_
2 #define _SCHED_H_
3
4 /* sched.h: POSIX 1003.1b Process Scheduling header */
5
6 /*-
7 * Copyright (c) 1996, 1997
8 * HD Associates, Inc. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by HD Associates, Inc
21 * and Jukka Antero Ukkonen.
22 * 4. Neither the name of the author nor the names of any co-contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * $FreeBSD$
39 */
40
41 #include <sys/types.h> /* For pid_t */
42
43 #ifndef _KERNEL
44 #include <time.h> /* Per P1003.4 */
45 #endif
46
47 /* Scheduling policies
48 */
49 #define SCHED_FIFO 1
50 #define SCHED_OTHER 2
51 #define SCHED_RR 3
52
53 struct sched_param
54 {
55 int sched_priority;
56 };
57
58 #ifndef _KERNEL
59 #include <sys/cdefs.h>
60
61 __BEGIN_DECLS
62 int sched_setparam __P((pid_t, const struct sched_param *));
63 int sched_getparam __P((pid_t, struct sched_param *));
64
65 int sched_setscheduler __P((pid_t, int, const struct sched_param *));
66 int sched_getscheduler __P((pid_t));
67
68 int sched_yield __P((void));
69 int sched_get_priority_max __P((int));
70 int sched_get_priority_min __P((int));
71 int sched_rr_get_interval __P((pid_t, struct timespec *));
72 __END_DECLS
73
74 #endif
75
76 #endif /* _SCHED_H_ */
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