diff options
Diffstat (limited to 'src/os/unix/ngx_gcc_atomic_x86.h')
| -rw-r--r-- | src/os/unix/ngx_gcc_atomic_x86.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/os/unix/ngx_gcc_atomic_x86.h b/src/os/unix/ngx_gcc_atomic_x86.h index e3c0c9379..3053e72ff 100644 --- a/src/os/unix/ngx_gcc_atomic_x86.h +++ b/src/os/unix/ngx_gcc_atomic_x86.h @@ -101,3 +101,11 @@ ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) } #endif + + +/* + * on x86 the write operations go in a program order, so we need only + * to disable the gcc reorder optimizations + */ + +#define ngx_memory_barrier() __asm__ volatile ("" ::: "memory") |