Sync ACPICA with Intel's version 20190215.
[dragonfly.git] / sys / sys / sched.h
1 /*-
2  * Copyright (c) 1996, 1997
3  *      HD Associates, Inc.  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, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *      This product includes software developed by HD Associates, Inc
16  *      and Jukka Antero Ukkonen.
17  * 4. Neither the name of the author nor the names of any co-contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  * $FreeBSD: src/sys/posix4/sched.h,v 1.4 1999/12/29 04:55:02 peter Exp $
34  */
35
36 /* sched.h: POSIX 1003.1b Process Scheduling header */
37
38 #ifndef _SCHED_H_
39 #define _SCHED_H_
40
41 /* Scheduling policies
42  */
43 #define SCHED_FIFO      1
44 #define SCHED_OTHER     2
45 #define SCHED_RR        3
46
47 struct sched_param
48 {
49         int sched_priority;
50 };
51
52 #ifndef _KERNEL
53 #include <sys/cdefs.h>
54 #include <sys/types.h>          /* For pid_t */
55
56 #include <time.h>               /* Per P1003.4 */
57
58 #if __BSD_VISIBLE
59 #include <machine/cpumask.h>
60
61 typedef cpumask_t               cpu_set_t;
62 typedef cpumask_t               cpuset_t;       /* FreeBSD compat */
63
64 #define CPU_SETSIZE             ((int)(sizeof(cpumask_t) * 8))
65
66 #define CPU_ZERO(set)           CPUMASK_ASSZERO(*set)
67 #define CPU_SET(cpu, set)       CPUMASK_ORBIT(*set, cpu)
68 #define CPU_CLR(cpu, set)       CPUMASK_NANDBIT(*set, cpu)
69 #define CPU_ISSET(cpu, set)     CPUMASK_TESTBIT(*set, cpu)
70
71 #define CPU_COUNT(set)                          \
72         (__builtin_popcountl((set)->ary[0]) +   \
73          __builtin_popcountl((set)->ary[1]) +   \
74          __builtin_popcountl((set)->ary[2]) +   \
75          __builtin_popcountl((set)->ary[3]))
76
77 #define CPU_AND(dst, set1, set2)                \
78 do {                                            \
79         if (dst == set1) {                      \
80                 CPUMASK_ANDMASK(*dst, *set2);   \
81         } else {                                \
82                 *dst = *set2;                   \
83                 CPUMASK_ANDMASK(*dst, *set1);   \
84         }                                       \
85 } while (0)
86
87 #define CPU_OR(dst, set1, set2)                 \
88 do {                                            \
89         if (dst == set1) {                      \
90                 CPUMASK_ORMASK(*dst, *set2);    \
91         } else {                                \
92                 *dst = *set2;                   \
93                 CPUMASK_ORMASK(*dst, *set1);    \
94         }                                       \
95 } while (0)
96
97 #define CPU_XOR(dst, set1, set2)                \
98 do {                                            \
99         if (dst == set1) {                      \
100                 CPUMASK_XORMASK(*dst, *set2);   \
101         } else {                                \
102                 *dst = *set2;                   \
103                 CPUMASK_XORMASK(*dst, *set1);   \
104         }                                       \
105 } while (0)
106
107 #define CPU_EQUAL(set1, set2)   CPUMASK_CMPMASKEQ(*set1, *set2)
108 #endif /* __BSD_VISIBLE */
109
110 __BEGIN_DECLS
111 int sched_setparam(pid_t, const struct sched_param *);
112 int sched_getparam(pid_t, struct sched_param *);
113
114 int sched_setscheduler(pid_t, int, const struct sched_param *);
115 int sched_getscheduler(pid_t);
116
117 int sched_yield(void);
118 int sched_get_priority_max(int);
119 int sched_get_priority_min(int);
120 int sched_rr_get_interval(pid_t, struct timespec *);
121
122 #if __BSD_VISIBLE
123 int sched_setaffinity(pid_t, size_t, const cpu_set_t *);
124 int sched_getaffinity(pid_t, size_t, cpu_set_t *);
125
126 int sched_getcpu(void);
127 #endif
128 __END_DECLS
129
130 #endif
131
132 #endif /* _SCHED_H_ */