Re: BackgroundPsql swallowing errors on windows

Hi,

On 2025-02-14 08:14:45 -0500, Andrew Dunstan wrote:
> It's been discussed before, but I'd really really like to get rid of
> BackgroundPsql. It's ugly, non-intuitive and fragile.

I agree, unfortunately we're stuck with this until we have a better
alternative in tree :(

> Last year I did some work on this. I was going to present it at Athens but
> illness prevented me, and then other life events managed to get in my way.
> But the basic work is around. See <https://github.com/adunstan/test-pq/commit/98518e4929e80fb96f210bbc5aab9fdcea058512>
> This introduces a libpq session object (PostgreSQL::Test::Session) which can
> be backed either by FFI or a small XS wrapper - the commit has recipes for
> both. Missing is a meson.build file for the XS wrapper. There are
> significant performance gains to be had too (poll_query_until is much nicer,
> for example, as are most uses of safe_psql). If there is  interest I will
> bring the work up to date, and maybe we can introduce this early in the v19
> cycle. It would significantly reduce our dependency on IPC::Run, especially
> the pump() stuff.

I definitely am interested.

Greetings,

Andres Freund