pthread_cond_init.c 1.6 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546
  1. /* Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008
  2. Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
  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. 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. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, write to the Free
  15. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16. 02111-1307 USA. */
  17. #include "pthreadP.h"
  18. int
  19. __pthread_cond_init (
  20. pthread_cond_t *cond,
  21. const pthread_condattr_t *cond_attr)
  22. {
  23. struct pthread_condattr *icond_attr = (struct pthread_condattr *) cond_attr;
  24. cond->__data.__lock = LLL_LOCK_INITIALIZER;
  25. cond->__data.__futex = 0;
  26. cond->__data.__nwaiters = (icond_attr != NULL
  27. ? ((icond_attr->value >> 1)
  28. & ((1 << COND_NWAITERS_SHIFT) - 1))
  29. : CLOCK_REALTIME);
  30. cond->__data.__total_seq = 0;
  31. cond->__data.__wakeup_seq = 0;
  32. cond->__data.__woken_seq = 0;
  33. cond->__data.__mutex = (icond_attr == NULL || (icond_attr->value & 1) == 0
  34. ? NULL : (void *) ~0l);
  35. cond->__data.__broadcast_seq = 0;
  36. return 0;
  37. }
  38. weak_alias(__pthread_cond_init, pthread_cond_init)