1*249f38f2Sguenther /* $OpenBSD: sched.h,v 1.1 2017/10/15 23:40:33 guenther Exp $ */ 2*249f38f2Sguenther 3*249f38f2Sguenther /* sched.h: POSIX 1003.1b Process Scheduling header */ 4*249f38f2Sguenther 5*249f38f2Sguenther /*- 6*249f38f2Sguenther * Copyright (c) 1996, 1997 7*249f38f2Sguenther * HD Associates, Inc. All rights reserved. 8*249f38f2Sguenther * 9*249f38f2Sguenther * Redistribution and use in source and binary forms, with or without 10*249f38f2Sguenther * modification, are permitted provided that the following conditions 11*249f38f2Sguenther * are met: 12*249f38f2Sguenther * 1. Redistributions of source code must retain the above copyright 13*249f38f2Sguenther * notice, this list of conditions and the following disclaimer. 14*249f38f2Sguenther * 2. Redistributions in binary form must reproduce the above copyright 15*249f38f2Sguenther * notice, this list of conditions and the following disclaimer in the 16*249f38f2Sguenther * documentation and/or other materials provided with the distribution. 17*249f38f2Sguenther * 3. All advertising materials mentioning features or use of this software 18*249f38f2Sguenther * must display the following acknowledgement: 19*249f38f2Sguenther * This product includes software developed by HD Associates, Inc 20*249f38f2Sguenther * and Jukka Antero Ukkonen. 21*249f38f2Sguenther * 4. Neither the name of the author nor the names of any co-contributors 22*249f38f2Sguenther * may be used to endorse or promote products derived from this software 23*249f38f2Sguenther * without specific prior written permission. 24*249f38f2Sguenther * 25*249f38f2Sguenther * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND 26*249f38f2Sguenther * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27*249f38f2Sguenther * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28*249f38f2Sguenther * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE 29*249f38f2Sguenther * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30*249f38f2Sguenther * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31*249f38f2Sguenther * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32*249f38f2Sguenther * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33*249f38f2Sguenther * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34*249f38f2Sguenther * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35*249f38f2Sguenther * SUCH DAMAGE. 36*249f38f2Sguenther * 37*249f38f2Sguenther */ 38*249f38f2Sguenther 39*249f38f2Sguenther #ifndef _SCHED_H_ 40*249f38f2Sguenther #define _SCHED_H_ 41*249f38f2Sguenther 42*249f38f2Sguenther #include <sys/types.h> /* For pid_t */ 43*249f38f2Sguenther #include <time.h> /* Per P1003.4 */ 44*249f38f2Sguenther 45*249f38f2Sguenther /* Scheduling policies 46*249f38f2Sguenther */ 47*249f38f2Sguenther #define SCHED_FIFO 1 48*249f38f2Sguenther #define SCHED_OTHER 2 49*249f38f2Sguenther #define SCHED_RR 3 50*249f38f2Sguenther 51*249f38f2Sguenther struct sched_param 52*249f38f2Sguenther { 53*249f38f2Sguenther int sched_priority; 54*249f38f2Sguenther }; 55*249f38f2Sguenther 56*249f38f2Sguenther __BEGIN_DECLS 57*249f38f2Sguenther #if 0 /* not yet */ 58*249f38f2Sguenther int sched_setparam(pid_t, const struct sched_param *); 59*249f38f2Sguenther int sched_getparam(pid_t, struct sched_param *); 60*249f38f2Sguenther 61*249f38f2Sguenther int sched_setscheduler(pid_t, int, const struct sched_param *); 62*249f38f2Sguenther int sched_getscheduler(pid_t); 63*249f38f2Sguenther #endif 64*249f38f2Sguenther 65*249f38f2Sguenther int sched_yield(void); 66*249f38f2Sguenther int sched_get_priority_max(int); 67*249f38f2Sguenther int sched_get_priority_min(int); 68*249f38f2Sguenther 69*249f38f2Sguenther #if 0 /* not yet */ 70*249f38f2Sguenther struct timespec; 71*249f38f2Sguenther int sched_rr_get_interval(pid_t, struct timespec *); 72*249f38f2Sguenther #endif 73*249f38f2Sguenther __END_DECLS 74*249f38f2Sguenther 75*249f38f2Sguenther #endif /* _SCHED_H_ */ 76