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 */ 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_ */ 93