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sched.h revision 1.7 
      1 /*	$NetBSD: sched.h,v 1.7 2005/02/03 04:39:32 perry 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 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