FreeBSD/Linux Kernel Cross Reference
sys/sys/rtprio.h
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 * $FreeBSD$
32 */
33
34 #ifndef _SYS_RTPRIO_H_
35 #define _SYS_RTPRIO_H_
36
37 /*
38 * Process realtime-priority specifications to rtprio.
39 */
40
41 /* priority types */
42
43 #define RTP_PRIO_REALTIME 0
44 #define RTP_PRIO_NORMAL 1
45 #define RTP_PRIO_IDLE 2
46
47 /* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO.
48 */
49
50 #define RTP_PRIO_FIFO_BIT 4
51 #define RTP_PRIO_FIFO (RTP_PRIO_REALTIME | RTP_PRIO_FIFO_BIT)
52 #define RTP_PRIO_BASE(P) ((P) & ~RTP_PRIO_FIFO_BIT)
53 #define RTP_PRIO_IS_REALTIME(P) (RTP_PRIO_BASE(P) == RTP_PRIO_REALTIME)
54 #define RTP_PRIO_NEED_RR(P) ((P) != RTP_PRIO_FIFO)
55
56 /* priority range */
57 #define RTP_PRIO_MIN 0 /* Highest priority */
58 #define RTP_PRIO_MAX 31 /* Lowest priority */
59
60 /*
61 * rtprio() syscall functions
62 */
63 #define RTP_LOOKUP 0
64 #define RTP_SET 1
65
66 #ifndef LOCORE
67 struct rtprio {
68 u_short type;
69 u_short prio;
70 };
71 #endif
72
73 #ifndef _KERNEL
74 #include <sys/cdefs.h>
75
76 __BEGIN_DECLS
77 int rtprio __P((int, pid_t, struct rtprio *));
78 __END_DECLS
79 #endif /* !_KERNEL */
80 #endif /* !_SYS_RTPRIO_H_ */
Cache object: fd1e334d782e39bddbfa4d84d6d2677f
|