17.09.2016 11:15, I wrote:
[...]
>> The relevant user-level API of libpq (PQisBusy) doesn't have a way to
>> return "waiting for write". So we'd have to break API compatibility.
>
> Ah, I see. But then, this is a very common sort of problem (Existing API
> spec getting inadequate for some new features added later, maintaining
> complete interface compatability getting impossible.)
>
> In this specific case, I'd say a reasonable approach would be to
> urgently introduce some new PQisBusyParams() returning the flag in
> question, and subsequently deprecating the historical PQisBusy(). Maybe
> something else would be necessary. Meanwhile, it would seem logical to
> move this busy-loop to PQisBusy() so it would become more evident
> PQisBusy() is flawed.
I'm now doing a respective cleanup I'll use for myself in my project.
Also, I'd be happy to share my changes to libpq so that they could
eventually be used upstream, so I'll try to post it to pgsql-hackers
when ready.
Thank you,
Regards,
Nikolai