diff options
Diffstat (limited to 'erts/include/internal/gcc')
| -rw-r--r-- | erts/include/internal/gcc/ethr_atomic.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/erts/include/internal/gcc/ethr_atomic.h b/erts/include/internal/gcc/ethr_atomic.h index 775030c8d5..5fe6e23477 100644 --- a/erts/include/internal/gcc/ethr_atomic.h +++ b/erts/include/internal/gcc/ethr_atomic.h @@ -55,6 +55,7 @@ do { \ volatile long x___ = 0; \ (void) __sync_val_compare_and_swap(&x___, (long) 0, (long) 1); \ } while (0) +#define ETHR_READ_DEPEND_MEMORY_BARRIER ETHR_MEMORY_BARRIER #if defined(ETHR_TRY_INLINE_FUNCS) || defined(ETHR_AUX_IMPL__) @@ -157,6 +158,24 @@ ethr_native_atomic_xchg(ethr_native_atomic_t *var, long new) return act; } +/* + * Atomic ops with at least specified barriers. + */ + +static ETHR_INLINE long +ethr_native_atomic_read_acqb(ethr_native_atomic_t *var) +{ + return __sync_add_and_fetch(&var->counter, (long) 0); +} + +#define ethr_native_atomic_inc_return_acqb ethr_native_atomic_inc_return +#define ethr_native_atomic_set_relb ethr_native_atomic_xchg +#define ethr_native_atomic_dec_relb ethr_native_atomic_dec_return +#define ethr_native_atomic_dec_return_relb ethr_native_atomic_dec_return + +#define ethr_native_atomic_cmpxchg_acqb ethr_native_atomic_cmpxchg +#define ethr_native_atomic_cmpxchg_relb ethr_native_atomic_cmpxchg + #endif #endif |