From dc79e6f23bee4d81f6e46710631f3a41517e2f42 Mon Sep 17 00:00:00 2001 From: John Birrell Date: Sun, 8 Mar 1998 02:17:26 +0000 Subject: [PATCH] Add a POSIX sched header. pthread_yield() in draft 4 becomes sched_yield() in the final draft (10). This header contains the prototype. Other things in here are "future". --- include/Makefile | 5 ++-- include/sched.h | 72 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 75 insertions(+), 2 deletions(-) create mode 100644 include/sched.h diff --git a/include/Makefile b/include/Makefile index 9fe38c7c8b6b..bda7f63ae03d 100644 --- a/include/Makefile +++ b/include/Makefile @@ -1,5 +1,5 @@ # From: @(#)Makefile 8.2 (Berkeley) 1/4/94 -# $Id: Makefile,v 1.72 1998/02/13 03:10:26 bde Exp $ +# $Id: Makefile,v 1.73 1998/03/04 10:23:23 dufault Exp $ # # Doing a make install builds /usr/include # @@ -16,7 +16,8 @@ FILES= a.out.h ar.h assert.h bitstring.h ctype.h db.h dirent.h disktab.h \ kvm.h limits.h link.h locale.h malloc.h memory.h mpool.h \ ndbm.h netdb.h nl_types.h nlist.h \ paths.h pthread.h pthread_np.h pwd.h \ - ranlib.h regex.h regexp.h resolv.h rune.h runetype.h setjmp.h sgtty.h \ + ranlib.h regex.h regexp.h resolv.h rune.h runetype.h sched.h setjmp.h \ + sgtty.h \ signal.h stab.h stddef.h stdio.h stdlib.h string.h stringlist.h \ strings.h struct.h sysexits.h tar.h time.h timers.h ttyent.h unistd.h \ utime.h utmp.h vis.h diff --git a/include/sched.h b/include/sched.h new file mode 100644 index 000000000000..31231244e826 --- /dev/null +++ b/include/sched.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 1998 John Birrell . + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by John Birrell. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id$ + * + * POSIX 1003.1c scheduling definitions. + * + */ + +#ifndef _SCHED_H_ +#define _SCHED_H_ +#include +#include +#include + +/* + * Scheduling policies (unimplemented) + */ +#define SCHED_FIFO 0 /* First in-first out scheduling policy. */ +#define SCHED_RR 1 /* Round robin scheduling policy. */ +#define SCHED_OTHER 2 /* Another scheduling policy. */ + +/* + * POSIX 1003.1 scheduling parameter structure. + */ +struct sched_param { + int sched_priority; /* Process execution scheduling priority. */ +}; + +/* + * Scheduling function prototype definitions. + */ +__BEGIN_DECLS +int sched_getparam __P((pid_t, const struct sched_param *)); +int sched_getscheduler __P((pid_t)); +int sched_get_priority_max __P((int)); +int sched_get_priority_min __P((int)); +int sched_rr_get_interval __P((pid_t, struct timespec *)); +int sched_setparam __P((pid_t, const struct sched_param *)); +int sched_setscheduler __P((pid_t, int, const struct sched_param *)); +int sched_yield __P((void)); +__END_DECLS + +#endif /* _SCHED_H_ */