include/posix/sched.h

   1 /*
   2  * Copyright (C) 2005 Philippe Gerum <rpm@xenomai.org>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 #ifndef _XENO_POSIX_SCHED_H
  20 #define _XENO_POSIX_SCHED_H
  21
  22 #if defined(__KERNEL__) || defined(__XENO_SIM__)
  23
  24 #include <nucleus/xenomai.h>
  25
  26 #ifdef __KERNEL__
  27 #include <linux/sched.h>
  28 #endif /* __KERNEL__ */
  29
  30 #ifdef __XENO_SIM__
  31 #include <posix_overrides.h>
  32 #define SCHED_FIFO      1
  33 #define SCHED_RR        2
  34 #endif /* __XENO_SIM__ */
  35
  36 #define SCHED_OTHER 0
  37
  38 struct timespec;
  39
  40 #ifdef __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 int sched_yield(void);
  45
  46 int sched_get_priority_min(int policy);
  47
  48 int sched_get_priority_max(int policy);
  49
  50 int sched_rr_get_interval(int pid, struct timespec *interval);
  51
  52 #ifdef __cplusplus
  53 }
  54 #endif
  55
  56 #else /* !(__KERNEL__ || __XENO_SIM__) */
  57
  58 #pragma GCC system_header
  59
  60 #include_next <sched.h>
  61
  62 int __real_sched_yield(void);
  63
  64 #endif /* !(__KERNEL__ || __XENO_SIM__) */
  65
  66 #ifndef __sched_extensions_defined
  67 #define __sched_extensions_defined
  68
  69 #ifndef SCHED_SPORADIC
  70 #define SCHED_SPORADIC          10
  71 #define sched_ss_low_priority   sched_u.ss.__sched_low_priority
  72 #define sched_ss_repl_period    sched_u.ss.__sched_repl_period
  73 #define sched_ss_init_budget    sched_u.ss.__sched_init_budget
  74 #define sched_ss_max_repl       sched_u.ss.__sched_max_repl
  75 #endif  /* !SCHED_SPORADIC */
  76
  77 struct __sched_ss_param {
  78         int __sched_low_priority;
  79         struct timespec __sched_repl_period;
  80         struct timespec __sched_init_budget;
  81         int __sched_max_repl;
  82 };
  83
  84 #ifndef SCHED_TP
  85 #define SCHED_TP                11
  86 #define sched_tp_partition      sched_u.tp.__sched_partition
  87 #endif  /* !SCHED_TP */
  88
  89 struct __sched_tp_param {
  90         int __sched_partition;
  91 };
  92
  93 struct sched_param_ex {
  94         int sched_priority;
  95         union {
  96                 struct __sched_ss_param ss;
  97                 struct __sched_tp_param tp;
  98         } sched_u;
  99 };
 100
 101 struct sched_tp_window {
 102         struct timespec offset;
 103         struct timespec duration;
 104         int ptid;
 105 };
 106
 107 struct __sched_config_tp {
 108         int nr_windows;
 109         struct sched_tp_window windows[];
 110 };
 111
 112 union sched_config {
 113         struct __sched_config_tp tp;
 114 };
 115
 116 #define sched_tp_confsz(nr_win) \
 117   (sizeof(struct __sched_config_tp) + nr_win * sizeof(struct sched_tp_window))
 118
 119 #ifdef __cplusplus
 120 extern "C" {
 121 #endif
 122
 123 int sched_setconfig_np(int cpu, int policy,
 124                        union sched_config *config, size_t len);
 125
 126 #ifdef __cplusplus
 127 }
 128 #endif
 129
 130 #endif /* __sched_extensions_defined */
 131
 132 #endif /* SCHED_H */