jack2 codebase
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JackAtomic.h 1.2KB

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  1. /*
  2. Copyright (C) 2004-2008 Grame
  3. This program is free software; you can redistribute it and/or modify
  4. it under the terms of the GNU Lesser General Public License as published by
  5. the Free Software Foundation; either version 2.1 of the License, or
  6. (at your option) any later version.
  7. This program is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10. GNU Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public License
  12. along with this program; if not, write to the Free Software
  13. Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  14. */
  15. #ifndef __JackAtomic__
  16. #define __JackAtomic__
  17. #include "JackTypes.h"
  18. #include "JackAtomic_os.h"
  19. static inline long INC_ATOMIC(volatile SInt32* val)
  20. {
  21. SInt32 actual;
  22. do {
  23. actual = *val;
  24. } while (!CAS(actual, actual + 1, val));
  25. return actual;
  26. }
  27. static inline long DEC_ATOMIC(volatile SInt32* val)
  28. {
  29. SInt32 actual;
  30. do {
  31. actual = *val;
  32. } while (!CAS(actual, actual - 1, val));
  33. return actual;
  34. }
  35. #endif