1 /*- 2 * Copyright (c) 1996, 1997 3 * HD Associates, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by HD Associates, Inc 16 * and Jukka Antero Ukkonen. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES 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 HD ASSOCIATES 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: src/sys/posix4/sched.h,v 1.4 1999/12/29 04:55:02 peter Exp $ 34 */ 35 36 /* sched.h: POSIX 1003.1b Process Scheduling header */ 37 38 #ifndef _SCHED_H_ 39 #define _SCHED_H_ 40 41 /* Scheduling policies 42 */ 43 #define SCHED_FIFO 1 44 #define SCHED_OTHER 2 45 #define SCHED_RR 3 46 47 struct sched_param 48 { 49 int sched_priority; 50 }; 51 52 #ifndef _KERNEL 53 #include <sys/cdefs.h> 54 #include <sys/types.h> /* For pid_t */ 55 56 #include <time.h> /* Per P1003.4 */ 57 58 #if __BSD_VISIBLE 59 #include <machine/cpumask.h> 60 61 typedef cpumask_t cpu_set_t; 62 typedef cpumask_t cpuset_t; /* FreeBSD compat */ 63 64 #define CPU_SETSIZE ((int)(sizeof(cpumask_t) * 8)) 65 66 #define CPU_ZERO(set) CPUMASK_ASSZERO(*set) 67 #define CPU_SET(cpu, set) CPUMASK_ORBIT(*set, cpu) 68 #define CPU_CLR(cpu, set) CPUMASK_NANDBIT(*set, cpu) 69 #define CPU_ISSET(cpu, set) CPUMASK_TESTBIT(*set, cpu) 70 71 #define CPU_COUNT(set) \ 72 (__builtin_popcountl((set)->ary[0]) + \ 73 __builtin_popcountl((set)->ary[1]) + \ 74 __builtin_popcountl((set)->ary[2]) + \ 75 __builtin_popcountl((set)->ary[3])) 76 77 #define CPU_AND(dst, set1, set2) \ 78 do { \ 79 if (dst == set1) { \ 80 CPUMASK_ANDMASK(*dst, *set2); \ 81 } else { \ 82 *dst = *set2; \ 83 CPUMASK_ANDMASK(*dst, *set1); \ 84 } \ 85 } while (0) 86 87 #define CPU_OR(dst, set1, set2) \ 88 do { \ 89 if (dst == set1) { \ 90 CPUMASK_ORMASK(*dst, *set2); \ 91 } else { \ 92 *dst = *set2; \ 93 CPUMASK_ORMASK(*dst, *set1); \ 94 } \ 95 } while (0) 96 97 #define CPU_XOR(dst, set1, set2) \ 98 do { \ 99 if (dst == set1) { \ 100 CPUMASK_XORMASK(*dst, *set2); \ 101 } else { \ 102 *dst = *set2; \ 103 CPUMASK_XORMASK(*dst, *set1); \ 104 } \ 105 } while (0) 106 107 #define CPU_EQUAL(set1, set2) CPUMASK_CMPMASKEQ(*set1, *set2) 108 #endif /* __BSD_VISIBLE */ 109 110 __BEGIN_DECLS 111 int sched_setparam(pid_t, const struct sched_param *); 112 int sched_getparam(pid_t, struct sched_param *); 113 114 int sched_setscheduler(pid_t, int, const struct sched_param *); 115 int sched_getscheduler(pid_t); 116 117 int sched_yield(void); 118 int sched_get_priority_max(int); 119 int sched_get_priority_min(int); 120 int sched_rr_get_interval(pid_t, struct timespec *); 121 122 #if __BSD_VISIBLE 123 int sched_setaffinity(pid_t, size_t, const cpu_set_t *); 124 int sched_getaffinity(pid_t, size_t, cpu_set_t *); 125 126 int sched_getcpu(void); 127 #endif 128 __END_DECLS 129 130 #endif 131 132 #endif /* _SCHED_H_ */ 133