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sched.h revision 1.14 
      1 /*	$NetBSD: sched.h,v 1.14 2022/08/01 14:34:01 wiz 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 __BEGIN_DECLS
     43 int	sched_setparam(pid_t, const struct sched_param *);
     44 int	sched_getparam(pid_t, struct sched_param *);
     45 int	sched_setscheduler(pid_t, int, const struct sched_param *);
     46 int	sched_getscheduler(pid_t);
     47 int	sched_get_priority_max(int);
     48 int	sched_get_priority_min(int);
     49 #ifndef __LIBC12_SOURCE__
     50 int	sched_rr_get_interval(pid_t, struct timespec *)
     51     __RENAME(__sched_rr_get_interval50);
     52 #endif
     53 
     54 int	sched_yield(void);
     55 int	__libc_thr_yield(void);
     56 __END_DECLS
     57 
     58 #ifndef __LIBPTHREAD_SOURCE__
     59 #define sched_yield		__libc_thr_yield
     60 #endif /* __LIBPTHREAD_SOURCE__ */
     61 
     62 __BEGIN_DECLS
     63 
     64 #if defined(_NETBSD_SOURCE)
     65 
     66 /* Process affinity functions (not portable) */
     67 int	sched_getaffinity_np(pid_t, size_t, cpuset_t *);
     68 int	sched_setaffinity_np(pid_t, size_t, cpuset_t *);
     69 
     70 #endif /* _NETBSD_SOURCE */
     71 
     72 #if defined(_GNU_SOURCE)
     73 
     74 /*
     75  * Historical functions, not defined in standard
     76  * Linux man page documents these functions as only available when
     77  * _GNU_SOURCE is defined
     78  */
     79 pid_t	 clone(int (*)(void *), void *, int, void *);
     80 pid_t	__clone(int (*)(void *), void *, int, void *);
     81 
     82 #endif /* _GNU_SOURCE */
     83 
     84 __END_DECLS
     85 
     86 #endif /* _SCHED_H_ */
     87