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src/os/unix/ngx_sunpro_atomic_sparc64.h - nginx-1.7.10

Functions defined

Macros defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #if (NGX_PTR_SIZE == 4)
  9. ‌#define NGX_CASA  ngx_casa
  10. #else
  11. ‌#define NGX_CASA  ngx_casxa
  12. #endif


  15. ngx_atomic_uint_t
  16. ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);

  18. ngx_atomic_uint_t
  19. ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);

  21. /* the code in src/os/unix/ngx_sunpro_sparc64.il */


  24. static ngx_inline ngx_atomic_uint_t
  25. ‌ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
  26.     ngx_atomic_uint_t set)
  27. {
  28.     set = NGX_CASA(set, old, lock);

  30.     return (set == old);
  31. }


  34. static ngx_inline ngx_atomic_int_t
  35. ‌ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
  36. {
  37.     ngx_atomic_uint_t  old, res;

  39.     old = *value;

  41.     for ( ;; ) {

  43.         res = old + add;

  45.         res = NGX_CASA(res, old, value);

  47.         if (res == old) {
  48.             return res;
  49.         }

  51.         old = res;
  52.     }
  53. }


  56. ‌#define ngx_memory_barrier()                                                  \
  57.         __asm (".volatile");                                                  \
  58.         __asm ("membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad");   \
  59.         __asm (".nonvolatile")

  61. ‌#define ngx_cpu_pause()

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