pthread_mutexattr_init.c 1.4 KB

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  1. /* Copyright (C) 2002 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 <string.h>
  16. #include <pthreadP.h>
  17. int
  18. __pthread_mutexattr_init (
  19. pthread_mutexattr_t *attr)
  20. {
  21. if (sizeof (struct pthread_mutexattr) != sizeof (pthread_mutexattr_t))
  22. memset (attr, '\0', sizeof (*attr));
  23. /* We use bit 31 to signal whether the mutex is going to be
  24. process-shared or not. By default it is zero, i.e., the mutex is
  25. not process-shared. */
  26. ((struct pthread_mutexattr *) attr)->mutexkind = PTHREAD_MUTEX_NORMAL;
  27. return 0;
  28. }
  29. strong_alias (__pthread_mutexattr_init, pthread_mutexattr_init)