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 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: releng/10.1/sys/sys/rtprio.h 165898 2007-01-08 21:21:45Z imp $
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 */
72 struct rtprio {
73 u_short type; /* scheduling class */
74 u_short prio;
75 };
76
77 #ifdef _KERNEL
78 struct thread;
79 int rtp_to_pri(struct rtprio *, struct thread *);
80 void pri_to_rtp(struct thread *, struct rtprio *);
81 #endif
82 #endif
83
84 #ifndef _KERNEL
85 #include <sys/cdefs.h>
86
87 __BEGIN_DECLS
88 int rtprio(int, pid_t, struct rtprio *);
89 int rtprio_thread(int, lwpid_t, struct rtprio *);
90 __END_DECLS
91 #endif /* !_KERNEL */
92 #endif /* !_SYS_RTPRIO_H_ */
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