diff options
| author | Ed Schouten <ed@FreeBSD.org> | 2011-12-26 23:33:41 +0000 |
|---|---|---|
| committer | Ed Schouten <ed@FreeBSD.org> | 2011-12-26 23:33:41 +0000 |
| commit | d4ae5eb992f56999d5a561f423d357ae0d0d743b (patch) | |
| tree | bd7cf43d45b6d4cbd9a9b5b8dfc6873ad3fd16f0 /include/stdatomic.h | |
| parent | fc6f0665bae406f564e6eb6e1deea849d368a708 (diff) | |
Notes
Diffstat (limited to 'include/stdatomic.h')
| -rw-r--r-- | include/stdatomic.h | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/include/stdatomic.h b/include/stdatomic.h index dd6148027784a..031f724b63f8f 100644 --- a/include/stdatomic.h +++ b/include/stdatomic.h @@ -54,7 +54,9 @@ #define atomic_init(obj, value) __atomic_init(obj, value) #elif defined(__GNUC_ATOMICS) #define ATOMIC_VAR_INIT(value) { .__val = (value) } -#define atomic_init(obj, value) (obj = ATOMIC_VAR_INIT(value)) +#define atomic_init(obj, value) do { \ + (obj)->__val = (value); \ +} while (0) #endif /* @@ -116,7 +118,7 @@ enum memory_order { #if defined(__CLANG_ATOMICS) #define atomic_is_lock_free(obj) __atomic_is_lock_free(obj) #elif defined(__GNUC_ATOMICS) -#define atomic_is_lock_free(obj) (sizeof((obj->__val)) <= sizeof(void *)) +#define atomic_is_lock_free(obj) (sizeof((obj)->__val) <= sizeof(void *)) #endif /* @@ -200,12 +202,13 @@ typedef _Atomic(__uintmax_t) atomic_uintmax_t; #define atomic_compare_exchange_strong_explicit(object, expected, \ desired, success, failure) ({ \ __typeof__((object)->__val) __v; \ - __v = \ - __sync_val_compare_and_swap((__typeof(&((object)->__val)))object,\ - *expected, desired); \ - *expected = __v; \ - (*expected == __v); \ - }) + _Bool __r; \ + __v = __sync_val_compare_and_swap(&(object)->__val, \ + *(expected), desired); \ + __r = *(expected) == __v; \ + *(expected) = __v; \ + __r; \ +}) #define atomic_compare_exchange_weak_explicit(object, expected, \ desired, success, failure) \ @@ -223,7 +226,7 @@ typedef _Atomic(__uintmax_t) atomic_uintmax_t; */ #define atomic_exchange_explicit(object, desired, order) ({ \ __typeof__((object)->__val) __v; \ - __v = __sync_lock_test_and_set(object, desired); \ + __v = __sync_lock_test_and_set(&(object)->__val, desired); \ __sync_synchronize(); \ __v; \ }) |