sysdeps/unix/sysv/irix4/setpriority.c

   1 /* Copyright (C) 1994, 1996, 1997, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library 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    The GNU C Library 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 GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <errno.h>
  20 #include <sys/resource.h>
  21 #include <sys/sysmp.h>
  22
  23 int
  24 setpriority (which, who, prio)
  25      enum __priority_which which;
  26      id_t who;
  27      int prio;
  28 {
  29   switch (which)
  30     {
  31     case PRIO_PROCESS:
  32       return __sysmp (MP_SCHED, MPTS_RENICE_PROC, who, prio);
  33     case PRIO_PGRP:
  34       return __sysmp (MP_SCHED, MPTS_RENICE_PGRP, who, prio);
  35     case PRIO_USER:
  36       return __sysmp (MP_SCHED, MPTS_RENICE_USER, who, prio);
  37     }
  38
  39   __set_errno (EINVAL);
  40   return -1;
  41 }