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Re: spinlocks on HP-UX

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: spinlocks on HP-UX
Date: 2011-08-29 00:00:05
Message-ID: 22599.1314576005@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Sun, Aug 28, 2011 at 7:19 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> (IOW, +1 for inventing a second macro to use in the delay loop only.)

> Beautiful.  Got a naming preference for that second macro?  I
> suggested TAS_SPIN() because it's what you use when you spin, as
> opposed to what you use in the uncontended case, but I'm not attached
> to that.

I had been thinking TAS_CONTENDED, but on reflection there's not a
strong argument for that over TAS_SPIN.  Do what you will.

			regards, tom lane

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