1 /* $OpenBSD: sched.h,v 1.1 2017/10/15 23:40:33 guenther Exp $ */ 2 3 /* sched.h: POSIX 1003.1b Process Scheduling header */ 4 5 /*- 6 * Copyright (c) 1996, 1997 7 * HD Associates, Inc. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by HD Associates, Inc 20 * and Jukka Antero Ukkonen. 21 * 4. Neither the name of the author nor the names of any co-contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 */ 38 39 #ifndef _SCHED_H_ 40 #define _SCHED_H_ 41 42 #include <sys/types.h> /* For pid_t */ 43 #include <time.h> /* Per P1003.4 */ 44 45 /* Scheduling policies 46 */ 47 #define SCHED_FIFO 1 48 #define SCHED_OTHER 2 49 #define SCHED_RR 3 50 51 struct sched_param 52 { 53 int sched_priority; 54 }; 55 56 __BEGIN_DECLS 57 #if 0 /* not yet */ 58 int sched_setparam(pid_t, const struct sched_param *); 59 int sched_getparam(pid_t, struct sched_param *); 60 61 int sched_setscheduler(pid_t, int, const struct sched_param *); 62 int sched_getscheduler(pid_t); 63 #endif 64 65 int sched_yield(void); 66 int sched_get_priority_max(int); 67 int sched_get_priority_min(int); 68 69 #if 0 /* not yet */ 70 struct timespec; 71 int sched_rr_get_interval(pid_t, struct timespec *); 72 #endif 73 __END_DECLS 74 75 #endif /* _SCHED_H_ */ 76