pthread_attr_setschedparam.c 1.6 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
  1. /* Copyright (C) 2002, 2004, 2009 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <assert.h>
  16. #include <errno.h>
  17. #include <string.h>
  18. #include "pthreadP.h"
  19. int
  20. attribute_protected
  21. __pthread_attr_setschedparam (
  22. pthread_attr_t *attr,
  23. const struct sched_param *param)
  24. {
  25. assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  26. struct pthread_attr *iattr = (struct pthread_attr *) attr;
  27. int min = sched_get_priority_min (iattr->schedpolicy);
  28. int max = sched_get_priority_max (iattr->schedpolicy);
  29. if (min == -1 || max == -1
  30. || param->sched_priority > max || param->sched_priority < min)
  31. return EINVAL;
  32. /* Copy the new values. */
  33. memcpy (&iattr->schedparam, param, sizeof (struct sched_param));
  34. /* Remember we set the value. */
  35. iattr->flags |= ATTR_FLAG_SCHED_SET;
  36. return 0;
  37. }
  38. strong_alias (__pthread_attr_setschedparam, pthread_attr_setschedparam)