/vendor/gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/atomic_load_store.h

http://github.com/feyeleanor/RubyGoLightly · C++ Header · 46 lines · 12 code · 7 blank · 27 comment · 0 complexity · f6ea69b83ca6f61c1072da0bcdba85b5 MD5 · raw file

  1. /*
  2. * Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
  3. *
  4. * Permission is hereby granted, free of charge, to any person obtaining a copy
  5. * of this software and associated documentation files (the "Software"), to deal
  6. * in the Software without restriction, including without limitation the rights
  7. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  8. * copies of the Software, and to permit persons to whom the Software is
  9. * furnished to do so, subject to the following conditions:
  10. *
  11. * The above copyright notice and this permission notice shall be included in
  12. * all copies or substantial portions of the Software.
  13. *
  14. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20. * SOFTWARE.
  21. */
  22. /*
  23. * Definitions for architecturs on which loads and stores of AO_t are
  24. * atomic fo all legal alignments.
  25. */
  26. AO_INLINE AO_t
  27. AO_load(volatile AO_t *addr)
  28. {
  29. /* Cast away the volatile for architectures like IA64 where */
  30. /* volatile adds barrier semantics. */
  31. return (*(AO_t *)addr);
  32. }
  33. #define AO_HAVE_load
  34. AO_INLINE void
  35. AO_store(volatile AO_t *addr, AO_t new_val)
  36. {
  37. (*(AO_t *)addr) = new_val;
  38. }
  39. #define AO_HAVE_store