On Sat, Jul 13, 2013 at 12:24 AM, Richard Henderson wrote:
> On 07/11/2013 11:32 PM, Liu Ping Fan wrote:
>> Refcnt's atomic inc/dec ops are frequent and its idiom need no seq_cst
>> order. So to get better performance, it worth to adopt _relaxed
>> other than _seq_cst memory model on them.
>
> You
On 07/11/2013 11:32 PM, Liu Ping Fan wrote:
> Refcnt's atomic inc/dec ops are frequent and its idiom need no seq_cst
> order. So to get better performance, it worth to adopt _relaxed
> other than _seq_cst memory model on them.
You'd need to update the documentation then. As it stands, what you've
Refcnt's atomic inc/dec ops are frequent and its idiom need no seq_cst
order. So to get better performance, it worth to adopt _relaxed
other than _seq_cst memory model on them.
We resort to gcc builtins. If gcc supports C11 memory model, __atomic_*
buitlins is used, otherwise __sync_* builtins.
S
