[boost] Re: [shared_ptr] Interlocked* - possible bug?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2004-09-24 06:34:09

Ben Hutchings wrote:
>
> I think the answer is that it cannot change the order of an
> atomic_read and an atomic update, assuming that the latter uses an
> Interlocked* operations which includes a full memory barrier, but
> unfortunately it would be able to change the order of two
> atomic_reads.

It doesn't matter whether two reads are reordered or not, because they will 
see the same value regardless of the order.