Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/posix4/sched.h
Version:
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1 #ifndef _SCHED_H_ 2 #define _SCHED_H_ 3 4 /* sched.h: POSIX 1003.1b Process Scheduling header */ 5 6 /*- 7 * Copyright (c) 1996, 1997 8 * HD Associates, Inc. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by HD Associates, Inc 21 * and Jukka Antero Ukkonen. 22 * 4. Neither the name of the author nor the names of any co-contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 */ 39 40 #include <sys/types.h> /* For pid_t */ 41 42 #ifndef KERNEL 43 #include <time.h> /* Per P1003.4 */ 44 #endif 45 46 /* Scheduling policies 47 */ 48 #define SCHED_FIFO 1 49 #define SCHED_OTHER 2 50 #define SCHED_RR 3 51 52 struct sched_param 53 { 54 int sched_priority; 55 }; 56 57 #ifndef KERNEL 58 #include <sys/cdefs.h> 59 60 __BEGIN_DECLS 61 int sched_setparam __P((pid_t, const struct sched_param *)); 62 int sched_getparam __P((pid_t, struct sched_param *)); 63 64 int sched_setscheduler __P((pid_t, int, const struct sched_param *)); 65 int sched_getscheduler __P((pid_t)); 66 67 int sched_yield __P((void)); 68 int sched_get_priority_max __P((int)); 69 int sched_get_priority_min __P((int)); 70 int sched_rr_get_interval __P((pid_t, struct timespec *)); 71 __END_DECLS 72 73 #endif /* KERNEL */ 74 75 #endif /* _SCHED_H_ */
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