pthread_mutex_backoff.h 1.1 KB

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  1. /* Pthread mutex backoff configuration.
  2. Copyright (C) 2022-2026 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  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. <https://www.gnu.org/licenses/>. */
  15. #ifndef _PTHREAD_MUTEX_BACKOFF_H
  16. #define _PTHREAD_MUTEX_BACKOFF_H 1
  17. static inline unsigned int
  18. get_jitter (void)
  19. {
  20. /* Arch dependent random jitter, return 0 disables random. */
  21. return 0;
  22. }
  23. static inline int
  24. get_next_backoff (int backoff)
  25. {
  26. /* Next backoff, return 1 disables mutex backoff. */
  27. return 1;
  28. }
  29. #endif