Re: Add min and max execute statement time in pg_stat_statement

On December 21, 2014 7:23:27 PM CET, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
>Andrew Dunstan wrote:
>
>> On my blog Peter Geoghegan mentioned something about "atomic
>fetch-and-add"
>> being useful here, but I'm not quite sure what that's referring to.
>Perhaps
>> someone can give me a pointer.
>
>The point, I think, is that without atomic instructions you have to
>hold
>a lock while incrementing the counters.

Port/atomics.h provides a abstraction for doing such atomic manipulations.

Andres

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