On Thu, Nov 21, 2013 at 9:09 AM, Andres Freund <andres@2ndquadrant.com> wrote:
> On 2013-11-21 09:08:05 -0600, Merlin Moncure wrote:
>> This code is in a very hot code path. Are we *sure* that the read
>> barrier is fast enough that we don't want to provide an alternate
>> function that only returns the local flag? I don't know enough about
>> them to say either way.
>
> A read barrier is just a compiler barrier on x86.
That's good enough for me then.
merlin