newlib/libc/include/sched.h

   1 /*
   2  *  Written by Joel Sherrill <joel@OARcorp.com>.
   3  *
   4  *  COPYRIGHT (c) 1989-2010.
   5  *  On-Line Applications Research Corporation (OAR).
   6  *
   7  *  Permission to use, copy, modify, and distribute this software for any
   8  *  purpose without fee is hereby granted, provided that this entire notice
   9  *  is included in all copies of any software which is or includes a copy
  10  *  or modification of this software.
  11  *
  12  *  THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
  13  *  WARRANTY.  IN PARTICULAR,  THE AUTHOR MAKES NO REPRESENTATION
  14  *  OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
  15  *  SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
  16  *
  17  *  $Id$
  18  */
  19
  20 #ifndef _SCHED_H_
  21 #define _SCHED_H_
  22
  23 #include <sys/types.h>
  24 #include <sys/sched.h>
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #if defined(_POSIX_PRIORITY_SCHEDULING)
  31 /*
  32  *  XBD 13 - Set Scheduling Parameters, P1003.1b-2008, p. 1803
  33  */
  34 int sched_setparam(
  35   pid_t                     __pid,
  36   const struct sched_param *__param
  37 );
  38
  39 /*
  40  *  XBD 13 - Set Scheduling Parameters, P1003.1b-2008, p. 1800
  41  */
  42 int sched_getparam(
  43   pid_t                     __pid,
  44   struct sched_param       *__param
  45 );
  46
  47 /*
  48  *  XBD 13 - Set Scheduling Policy and Scheduling Parameters,
  49  *         P1003.1b-2008, p. 1805
  50  */
  51 int sched_setscheduler(
  52   pid_t                     __pid,
  53   int                       __policy,
  54   const struct sched_param *__param
  55 );
  56
  57 /*
  58  *  XBD 13 - Get Scheduling Policy, P1003.1b-2008, p. 1801
  59  */
  60 int sched_getscheduler(
  61   pid_t                     __pid
  62 );
  63
  64 /*
  65  *  XBD 13 - Get Scheduling Parameter Limits, P1003.1b-2008, p. 1799
  66  */
  67 int sched_get_priority_max(
  68   int __policy
  69 );
  70
  71 int sched_get_priority_min(
  72   int  __policy
  73 );
  74
  75 /*
  76  *  XBD 13 - Get Scheduling Parameter Limits, P1003.1b-2008, p. 1802
  77  */
  78 int sched_rr_get_interval(
  79   pid_t             __pid,
  80   struct timespec  *__interval
  81 );
  82 #endif /* _POSIX_PRIORITY_SCHEDULING */
  83
  84 #if defined(_POSIX_THREADS) || defined(_POSIX_PRIORITY_SCHEDULING)
  85
  86 /*
  87  *  XBD 13 - Yield Processor, P1003.1b-2008, p. 1807
  88  */
  89 int sched_yield( void );
  90
  91 #endif /* _POSIX_THREADS or _POSIX_PRIORITY_SCHEDULING */
  92
  93 #if __GNU_VISIBLE
  94 int sched_getcpu(void);
  95
  96 /* The following functions should only be declared if the type
  97    cpu_set_t is defined through indirect inclusion of sys/cpuset.h,
  98    only available on some targets. */
  99 #ifdef _SYS_CPUSET_H_
 100 int sched_getaffinity (pid_t, size_t, cpu_set_t *);
 101 int sched_get_thread_affinity (void *, size_t, cpu_set_t *);
 102 int sched_setaffinity (pid_t, size_t, const cpu_set_t *);
 103 int sched_set_thread_affinity (void *, size_t, const cpu_set_t *);
 104 #endif /* _SYS_CPUSET_H_ */
 105
 106 #endif
 107
 108 #ifdef __cplusplus
 109 }
 110 #endif
 111
 112 #endif /* _SCHED_H_ */