1/*-
2 * Copyright (c) 1994, Henrik Vestergaard Draboel
3 * 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 Henrik Vestergaard Draboel.
16 * 4. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD$
32 */
33
34#ifndef _SYS_RTPRIO_H_
35#define _SYS_RTPRIO_H_
36
37#include <sys/priority.h>
38
39/*
40 * Process realtime-priority specifications to rtprio.
41 */
42
43/* priority types.  Start at 1 to catch uninitialized fields. */
44
45#define RTP_PRIO_REALTIME	PRI_REALTIME	/* real time process */
46#define RTP_PRIO_NORMAL		PRI_TIMESHARE	/* time sharing process */
47#define RTP_PRIO_IDLE		PRI_IDLE	/* idle process */
48
49/* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO.
50 */
51
52#define RTP_PRIO_FIFO_BIT	PRI_FIFO_BIT
53#define RTP_PRIO_FIFO		PRI_FIFO
54#define RTP_PRIO_BASE(P)	PRI_BASE(P)
55#define RTP_PRIO_IS_REALTIME(P) PRI_IS_REALTIME(P)
56#define RTP_PRIO_NEED_RR(P)	PRI_NEED_RR(P)
57
58/* priority range */
59#define RTP_PRIO_MIN		0	/* Highest priority */
60#define RTP_PRIO_MAX		31	/* Lowest priority */
61
62/*
63 * rtprio() syscall functions
64 */
65#define RTP_LOOKUP		0
66#define RTP_SET			1
67
68#ifndef LOCORE
69/*
70 * Scheduling class information.
71 */
72struct rtprio {
73	u_short type;			/* scheduling class */
74	u_short prio;
75};
76
77#ifdef _KERNEL
78struct thread;
79int	rtp_to_pri(struct rtprio *, struct thread *);
80void	pri_to_rtp(struct thread *, struct rtprio *);
81#endif
82#endif
83
84#ifndef _KERNEL
85#include <sys/cdefs.h>
86
87__BEGIN_DECLS
88int	rtprio(int, pid_t, struct rtprio *);
89int	rtprio_thread(int, lwpid_t, struct rtprio *);
90__END_DECLS
91#endif	/* !_KERNEL */
92#endif	/* !_SYS_RTPRIO_H_ */
93