Re: Stack overflow issue

On Tue, Apr 16, 2024 at 1:48 AM Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2024-03-06 14:17:23 +0200, Alexander Korotkov wrote:
> > 0001 Turn tail recursion into iteration in CommitTransactionCommand()
> > I did minor revision of comments and code blocks order to improve the
> > readability.
>
> After sending
> https://www.postgresql.org/message-id/20240414223305.m3i5eju6zylabvln%40awork3.anarazel.de
> I looked some more at important areas where changes didn't have code
> coverage. One thing I noticed was that the "non-internal" part of
> AbortCurrentTransaction() is uncovered:
> https://anarazel.de/postgres/cov/16-vs-HEAD-2024-04-14/src/backend/access/transam/xact.c.gcov.html#L3403
>
> Which made me try to understand fefd9a3fed2. I'm a bit confused about why
> some parts are handled in CommitCurrentTransaction()/AbortCurrentTransaction()
> and others are in the *Internal functions.
>
> I understand that fefd9a3fed2 needed to remove the recursion in
> CommitTransactionCommand()/AbortCurrentTransaction(). But I don't understand
> why that means having some code in in the non-internal and some in the
> internal functions? Wouldn't it be easier to just have all the state handling
> code in the Internal() function and just break after the
> CleanupSubTransaction() calls?

I'm not sure I correctly get what you mean. Do you think the attached
patch matches the direction you're pointing? The patch itself is not
final, it requires cleanup and comments revision, just to check the
direction.

------
Regards,
Alexander Korotkov