On Mon, Aug 14, 2017 at 9:59 PM, Craig Ringer <craig@2ndquadrant.com> wrote:
> The bits are set, those macros just test to exclude the special meaning of
> both bits being set at once to mean "frozen".
>
> I was reluctant to filter out HEAP_XMIN_COMMITTED and HEAP_XMIN_INVALID
> when we detect that it's frozen, because that could well be misleading when
> debugging.
I don't think so -- the "committed" and "invalid" meanings are
effectively canceled when the "frozen" mask is present.
I mean, "committed" and "invalid" contradict each other...
--
Robert Haas
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