lib/spawnattr_setschedpolicy.c

   1 /* Copyright (C) 2000, 2009-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (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, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <spawn.h>
  21
  22 #include <errno.h>
  23
  24 /* Store scheduling policy in the attribute structure.  */
  25 int
  26 posix_spawnattr_setschedpolicy (posix_spawnattr_t *attr, int schedpolicy)
  27 {
  28   /* Do nothing if POSIX_SPAWN_SETSCHEDULER is unsupported.  */
  29 #if POSIX_SPAWN_SETSCHEDULER != 0
  30   if (schedpolicy != SCHED_OTHER && schedpolicy != SCHED_FIFO
  31       && schedpolicy != SCHED_RR)
  32     return EINVAL;
  33
  34   /* Store the policy.  */
  35   attr->_policy = schedpolicy;
  36 #endif
  37
  38   return 0;
  39 }