Robert Haas <robertmhaas@gmail.com> writes:
> On Fri, Dec 17, 2010 at 9:52 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> I imagine the reason for the original coding was to avoid a useless
>> gettimeofday kernel call in the common case that there are no
>> conflicting xacts to wait for. �Could we restore that behavior?
> Something like the attached?
I would just add the return-at-the-top. Changing the loop logic is
not necessary --- the loop test is cheap.
regards, tom lane