1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1994, Henrik Vestergaard Draboel 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Henrik Vestergaard Draboel. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef _SYS_RTPRIO_H_ 37 #define _SYS_RTPRIO_H_ 38 39 #include <sys/priority.h> 40 41 /* 42 * Process realtime-priority specifications to rtprio. 43 */ 44 45 /* priority types. Start at 1 to catch uninitialized fields. */ 46 47 #define RTP_PRIO_ITHD PRI_ITHD /* Interrupt thread. */ 48 #define RTP_PRIO_REALTIME PRI_REALTIME /* real time process */ 49 #define RTP_PRIO_NORMAL PRI_TIMESHARE /* time sharing process */ 50 #define RTP_PRIO_IDLE PRI_IDLE /* idle process */ 51 52 /* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO. 53 */ 54 55 #define RTP_PRIO_FIFO_BIT PRI_FIFO_BIT 56 #define RTP_PRIO_FIFO PRI_FIFO 57 #define RTP_PRIO_BASE(P) PRI_BASE(P) 58 #define RTP_PRIO_IS_REALTIME(P) PRI_IS_REALTIME(P) 59 #define RTP_PRIO_NEED_RR(P) PRI_NEED_RR(P) 60 61 /* priority range */ 62 #define RTP_PRIO_MIN 0 /* Highest priority */ 63 #define RTP_PRIO_MAX 31 /* Lowest priority */ 64 65 /* 66 * rtprio() syscall functions 67 */ 68 #define RTP_LOOKUP 0 69 #define RTP_SET 1 70 71 #ifndef LOCORE 72 /* 73 * Scheduling class information. 74 */ 75 struct rtprio { 76 u_short type; /* scheduling class */ 77 u_short prio; 78 }; 79 80 #ifdef _KERNEL 81 struct thread; 82 int rtp_to_pri(struct rtprio *, struct thread *); 83 void pri_to_rtp(struct thread *, struct rtprio *); 84 #endif 85 #endif 86 87 #ifndef _KERNEL 88 #include <sys/cdefs.h> 89 90 __BEGIN_DECLS 91 int rtprio(int, pid_t, struct rtprio *); 92 int rtprio_thread(int, lwpid_t, struct rtprio *); 93 __END_DECLS 94 #endif /* !_KERNEL */ 95 #endif /* !_SYS_RTPRIO_H_ */ 96