Change sendfile() to use the new m_ext callback scheme for cleaning up after
[dragonfly.git] / sys / sys / rtprio.h
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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 (name).
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: src/sys/sys/rtprio.h,v 1.9 1999/12/29 04:24:46 peter Exp $
b153f746 32 * $DragonFly: src/sys/sys/rtprio.h,v 1.4 2003/08/20 07:31:21 rob Exp $
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33 */
34
35#ifndef _SYS_RTPRIO_H_
36#define _SYS_RTPRIO_H_
37
38/*
39 * Process realtime-priority specifications to rtprio.
40 */
41
42/* priority types */
43
44#define RTP_PRIO_REALTIME 0
45#define RTP_PRIO_NORMAL 1
46#define RTP_PRIO_IDLE 2
73e4f7b9 47#define RTP_PRIO_THREAD 3
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48
49/* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO.
50 */
51
52#define RTP_PRIO_FIFO_BIT 4
53#define RTP_PRIO_FIFO (RTP_PRIO_REALTIME | RTP_PRIO_FIFO_BIT)
54#define RTP_PRIO_BASE(P) ((P) & ~RTP_PRIO_FIFO_BIT)
55#define RTP_PRIO_IS_REALTIME(P) (RTP_PRIO_BASE(P) == RTP_PRIO_REALTIME)
56#define RTP_PRIO_NEED_RR(P) ((P) != RTP_PRIO_FIFO)
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
69struct rtprio {
70 u_short type;
71 u_short prio;
72};
73#endif
74
75#ifndef _KERNEL
76#include <sys/cdefs.h>
77
78__BEGIN_DECLS
b153f746 79int rtprio (int, pid_t, struct rtprio *);
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80__END_DECLS
81#endif /* !_KERNEL */
82#endif /* !_SYS_RTPRIO_H_ */