Re: itemptr_encode/itemptr_decode

Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2019-04-17 18:57:00 -0400, Tom Lane wrote:
>> What on God's green earth are these functions doing in
>> src/include/catalog/index.h?

> I'm happy to move them elsewhere, but I'm not sure there's really a good
> location. I guess we could move them to itemptr.h - but they're not
> really something particularly generally usable.

I don't have a better idea than that either, but I sure feel that they
don't belong in index.h. Is it worth inventing a whole new header
for these? If we stick 'em in itemptr.h, they'll be getting compiled
by a whole lot of files :-(

As for the general usability argument, I'm not sure --- as we start
to look at alternate AMs, we might have more use for them. When I first
saw the functions, I thought maybe they were part of sort acceleration
for TIDs; evidently they're not (yet), but that seems like another
possible use-case.

regards, tom lane