1 /* $NetBSD: sched.h,v 1.9 2008/04/28 20:22:54 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _SCHED_H_ 33 #define _SCHED_H_ 34 35 #include <sys/cdefs.h> 36 #include <sys/featuretest.h> 37 #include <sys/sched.h> 38 39 /* Required by POSIX 1003.1, section 13.1, lines 12-13. */ 40 #include <time.h> 41 42 /* Functions */ 43 44 __BEGIN_DECLS 45 /* 46 * These are permitted to fail and return -1 and set errno = ENOSYS if 47 * _POSIX_PRIORITY_SCHEDULING is not defined. 48 */ 49 int sched_setparam(pid_t, const struct sched_param *); 50 int sched_getparam(pid_t, struct sched_param *); 51 int sched_setscheduler(pid_t, int, const struct sched_param *); 52 int sched_getscheduler(pid_t); 53 int sched_get_priority_max(int); 54 int sched_get_priority_min(int); 55 int sched_rr_get_interval(pid_t, struct timespec *); 56 57 58 /* Not optional in the presence of _POSIX_THREADS */ 59 int sched_yield(void); 60 int __libc_thr_yield(void); 61 __END_DECLS 62 63 #ifndef __LIBPTHREAD_SOURCE__ 64 #define sched_yield __libc_thr_yield 65 #endif /* __LIBPTHREAD_SOURCE__ */ 66 67 #if defined(_NETBSD_SOURCE) 68 69 /* 70 * Stuff that for historical reasons is in <sched.h>, but not defined 71 * by any standard. 72 */ 73 74 __BEGIN_DECLS 75 pid_t clone(int (*)(void *), void *, int, void *); 76 pid_t __clone(int (*)(void *), void *, int, void *); 77 __END_DECLS 78 79 #endif /* _NETBSD_SOURCE */ 80 81 #endif /* _SCHED_H_ */ 82