semaphore.h 1.3 KB

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  1. /* Machine-specific POSIX semaphore type layouts. SPARC version.
  2. Copyright (C) 2003 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
  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. #ifndef _SEMAPHORE_H
  18. # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
  19. #endif
  20. #include <bits/wordsize.h>
  21. #if __WORDSIZE == 64
  22. # define __SIZEOF_SEM_T 32
  23. #else
  24. # define __SIZEOF_SEM_T 16
  25. #endif
  26. /* Value returned if `sem_open' failed. */
  27. #define SEM_FAILED ((sem_t *) 0)
  28. typedef union
  29. {
  30. char __size[__SIZEOF_SEM_T];
  31. long int __align;
  32. } sem_t;