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 34 #ifndef _SYS_RTPRIO_H_ 35 #define _SYS_RTPRIO_H_ 36 37 #include <sys/_types.h> 38 #include <sys/priority.h> 39 40 /* 41 * Process realtime-priority specifications to rtprio. 42 */ 43 44 /* priority types. Start at 1 to catch uninitialized fields. */ 45 46 #define RTP_PRIO_ITHD PRI_ITHD /* Interrupt thread. */ 47 #define RTP_PRIO_REALTIME PRI_REALTIME /* real time process */ 48 #define RTP_PRIO_NORMAL PRI_TIMESHARE /* time sharing process */ 49 #define RTP_PRIO_IDLE PRI_IDLE /* idle process */ 50 51 /* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO. 52 */ 53 54 #define RTP_PRIO_FIFO_BIT PRI_FIFO_BIT 55 #define RTP_PRIO_FIFO PRI_FIFO 56 #define RTP_PRIO_BASE(P) PRI_BASE(P) 57 #define RTP_PRIO_IS_REALTIME(P) PRI_IS_REALTIME(P) 58 #define RTP_PRIO_NEED_RR(P) PRI_NEED_RR(P) 59 60 /* priority range */ 61 #define RTP_PRIO_MIN 0 /* Highest priority */ 62 #define RTP_PRIO_MAX 31 /* Lowest priority */ 63 64 /* 65 * rtprio() syscall functions 66 */ 67 #define RTP_LOOKUP 0 68 #define RTP_SET 1 69 70 #ifndef LOCORE 71 /* 72 * Scheduling class information. 73 */ 74 struct rtprio { 75 unsigned short type; /* scheduling class */ 76 unsigned short prio; 77 }; 78 79 #ifdef _KERNEL 80 struct thread; 81 int rtp_to_pri(struct rtprio *, struct thread *); 82 void pri_to_rtp(struct thread *, struct rtprio *); 83 #endif 84 #endif 85 86 #ifndef _KERNEL 87 #include <sys/cdefs.h> 88 89 __BEGIN_DECLS 90 int rtprio(int, __pid_t, struct rtprio *); 91 int rtprio_thread(int, __lwpid_t, struct rtprio *); 92 __END_DECLS 93 #endif /* !_KERNEL */ 94 #endif /* !_SYS_RTPRIO_H_ */ 95