The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/posix4/sched.h

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    1 /*-
    2  * Copyright (c) 1996, 1997
    3  *      HD Associates, Inc.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by HD Associates, Inc
   16  *      and Jukka Antero Ukkonen.
   17  * 4. Neither the name of the author nor the names of any co-contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  * $FreeBSD: src/sys/posix4/sched.h,v 1.7 2002/10/03 06:27:50 mike Exp $
   34  */
   35 
   36 /* sched.h: POSIX 1003.1b Process Scheduling header */
   37 
   38 #ifndef _SCHED_H_
   39 #define _SCHED_H_
   40 
   41 #include <sys/_types.h>
   42 
   43 #ifndef _PID_T_DECLARED
   44 typedef __pid_t         pid_t;
   45 #define _PID_T_DECLARED
   46 #endif
   47 
   48 /*
   49  * Scheduling policies
   50  */
   51 #define SCHED_FIFO      1
   52 #define SCHED_OTHER     2
   53 #define SCHED_RR        3
   54 
   55 struct sched_param {
   56         int     sched_priority;
   57 };
   58 
   59 #ifndef _KERNEL
   60 #include <sys/cdefs.h>
   61 
   62 struct timespec;
   63 
   64 __BEGIN_DECLS
   65 int     sched_get_priority_max(int);
   66 int     sched_get_priority_min(int);
   67 int     sched_getparam(pid_t, struct sched_param *);
   68 int     sched_getscheduler(pid_t);
   69 int     sched_rr_get_interval(pid_t, struct timespec *);
   70 int     sched_setparam(pid_t, const struct sched_param *);
   71 int     sched_setscheduler(pid_t, int, const struct sched_param *);
   72 int     sched_yield(void);
   73 __END_DECLS
   74 
   75 #endif
   76 
   77 #endif /* !_SCHED_H_ */

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