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 $ 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_ */ 81