| Igor Sysoev | 078d1b2 | 2004-06-30 15:30:41 +0000 | [diff] [blame^] | 1 | #ifndef _NGX_ATOMIC_H_INCLUDED_ |
| 2 | #define _NGX_ATOMIC_H_INCLUDED_ |
| 3 | |
| 4 | |
| 5 | #include <ngx_config.h> |
| 6 | #include <ngx_core.h> |
| 7 | |
| 8 | |
| 9 | #define ngx_atomic_inc(p) InterlockedIncrement((long *) p) |
| 10 | #define ngx_atomic_dec(p) InterlockedDecrement((long *) p) |
| 11 | |
| 12 | |
| 13 | #if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) |
| 14 | |
| 15 | #define ngx_atomic_cmp_set(lock, old, set) \ |
| 16 | (InterlockedCompareExchange((long *) lock, set, old) == old) |
| 17 | |
| 18 | #else |
| 19 | |
| 20 | #define ngx_atomic_cmp_set(lock, old, set) \ |
| 21 | (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \ |
| 22 | == (void *) old) |
| 23 | |
| 24 | #endif |
| 25 | |
| 26 | |
| 27 | void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin); |
| 28 | |
| 29 | #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
| 30 | #define ngx_unlock(lock) *(lock) = 0 |
| 31 | |
| 32 | |
| 33 | #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |
