libpthread/nptl/pthread_attr_setschedpolicy.c

   1 /* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <assert.h>
  20 #include <errno.h>
  21 #include "pthreadP.h"
  22
  23
  24 int
  25 attribute_protected
  26 __pthread_attr_setschedpolicy (
  27      pthread_attr_t *attr,
  28      int policy)
  29 {
  30   struct pthread_attr *iattr;
  31
  32   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  33   iattr = (struct pthread_attr *) attr;
  34
  35   /* Catch invalid values.  */
  36   if (policy != SCHED_OTHER && policy != SCHED_FIFO && policy != SCHED_RR)
  37     return EINVAL;
  38
  39   /* Store the new values.  */
  40   iattr->schedpolicy = policy;
  41
  42   /* Remember we set the value.  */
  43   iattr->flags |= ATTR_FLAG_POLICY_SET;
  44
  45   return 0;
  46 }
  47 strong_alias (__pthread_attr_setschedpolicy, pthread_attr_setschedpolicy)