include/sys/sched.h

   1 /*
   2  *  Written by Joel Sherrill <joel@OARcorp.com>.
   3  *
   4  *  COPYRIGHT (c) 1989-2000.
   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: sched.h,v 1.1 2000/12/12 01:24:08 jjohnstn Exp $
  18  */
  19
  20
  21 #ifndef __POSIX_SYS_SCHEDULING_h
  22 #define __POSIX_SYS_SCHEDULING_h
  23
  24 #ifdef __cplusplus
  25 extern "C" {
  26 #endif
  27
  28 #include <sys/unistd.h>
  29
  30 #include <sys/types.h>
  31 #include <sys/time.h>
  32
  33 /* Scheduling Policies, P1003.1b-1993, p. 250
  34    NOTE:  SCHED_SPORADIC added by P1003.4b/D8, p. 34.  */
  35
  36 #define SCHED_OTHER    0
  37 #define SCHED_FIFO     1
  38 #define SCHED_RR       2
  39
  40 #if defined(_POSIX_SPORADIC_SERVER)
  41 #define SCHED_SPORADIC 3
  42 #endif
  43
  44 /* Scheduling Parameters, P1003.1b-1993, p. 249
  45    NOTE:  Fields whose name begins with "ss_" added by P1003.4b/D8, p. 33.  */
  46
  47 struct sched_param {
  48   int sched_priority;           /* Process execution scheduling priority */
  49
  50 #if defined(_POSIX_SPORADIC_SERVER)
  51   int ss_low_priority;          /* Low scheduling priority for sporadic */
  52                                 /*   server */
  53   struct timespec ss_replenish_period;
  54                                 /* Replenishment period for sporadic server */
  55   struct timespec ss_initial_budget;   /* Initial budget for sporadic server */
  56 #endif
  57 };
  58
  59 #ifdef __cplusplus
  60 }
  61 #endif
  62
  63 #endif
  64 /* end of include file */
  65