Re: [Qemu-devel] [PATCH v7 1/7] qom: apply atomic on object's refcount

[Richard Henderson]

On 11/24/2012 06:02 PM, Liu Ping Fan wrote:
> -    obj->ref--;
>  
>      /* parent always holds a reference to its children */
> -    if (obj->ref == 0) {
> +    if (__sync_fetch_and_sub(&obj->ref, 1) == 1) {

  if (__sync_sub_and_fetch(&obj->ref, 1) == 0)


r~