1 /* $NetBSD: sched.h,v 1.8 2005/10/09 11:17:28 kleink Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nathan J. Williams. 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 the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _SCHED_H_ 40 #define _SCHED_H_ 41 42 #include <sys/cdefs.h> 43 #include <sys/featuretest.h> 44 #include <sys/sched.h> 45 46 /* Required by POSIX 1003.1, section 13.1, lines 12-13. */ 47 #include <time.h> 48 49 /* Functions */ 50 51 __BEGIN_DECLS 52 /* 53 * These are permitted to fail and return -1 and set errno = ENOSYS if 54 * _POSIX_PRIORITY_SCHEDULING is not defined. 55 */ 56 int sched_setparam(pid_t, const struct sched_param *); 57 int sched_getparam(pid_t, struct sched_param *); 58 int sched_setscheduler(pid_t, int, const struct sched_param *); 59 int sched_getscheduler(pid_t); 60 int sched_get_priority_max(int); 61 int sched_get_priority_min(int); 62 int sched_rr_get_interval(pid_t, struct timespec *); 63 64 65 /* Not optional in the presence of _POSIX_THREADS */ 66 int sched_yield(void); 67 int __libc_thr_yield(void); 68 __END_DECLS 69 70 #ifndef __LIBPTHREAD_SOURCE__ 71 #define sched_yield __libc_thr_yield 72 #endif /* __LIBPTHREAD_SOURCE__ */ 73 74 #if defined(_NETBSD_SOURCE) 75 76 /* 77 * Stuff that for historical reasons is in <sched.h>, but not defined 78 * by any standard. 79 */ 80 81 __BEGIN_DECLS 82 pid_t clone(int (*)(void *), void *, int, void *); 83 pid_t __clone(int (*)(void *), void *, int, void *); 84 __END_DECLS 85 86 #endif /* _NETBSD_SOURCE */ 87 88 #endif /* _SCHED_H_ */ 89