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7b3547eb 1/* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.
4a2c9975 2 Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
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19
20#ifndef _SCHED_H
21#define _SCHED_H 1
22
23#include <features.h>
24
25/* Get type definitions. */
5107cf1d 26#include <bits/types.h>
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27
28#define __need_timespec
29#include <time.h>
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30
31/* Get system specific constant and data structure definitions. */
5107cf1d 32#include <bits/sched.h>
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33/* Define the real names for the elements of `struct sched_param'. */
34#define sched_priority __sched_priority
35
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36
37__BEGIN_DECLS
38
39/* Set scheduling parameters for a process. */
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40extern int sched_setparam (__pid_t __pid, __const struct sched_param *__param)
41 __THROW;
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42
43/* Retrieve scheduling parameters for a particular process. */
c1422e5b 44extern int sched_getparam (__pid_t __pid, struct sched_param *__param) __THROW;
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45
46/* Set scheduling algorithm and/or parameters for a process. */
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47extern int sched_setscheduler (__pid_t __pid, int __policy,
48 __const struct sched_param *__param) __THROW;
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49
50/* Retrieve scheduling algorithm for a particular purpose. */
c1422e5b 51extern int sched_getscheduler (__pid_t __pid) __THROW;
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52
53/* Yield the processor. */
c1422e5b 54extern int sched_yield (void) __THROW;
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55
56/* Get maximum priority value for a scheduler. */
c1422e5b 57extern int sched_get_priority_max (int __algorithm) __THROW;
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58
59/* Get minimum priority value for a scheduler. */
c1422e5b 60extern int sched_get_priority_min (int __algorithm) __THROW;
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61
62/* Get the SCHED_RR interval for the named process. */
c1422e5b 63extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
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64
65__END_DECLS
66
67#endif /* sched.h */