From: | Jelte Fennema-Nio <postgres(at)jeltef(dot)nl> |
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To: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
Cc: | Noah Misch <noah(at)leadboat(dot)com>, Jacob Champion <jacob(dot)champion(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Denis Laxalde <denis(dot)laxalde(at)dalibo(dot)com>, vignesh C <vignesh21(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Greg Stark <stark(at)mit(dot)edu>, "Gregory Stark (as CFM)" <stark(dot)cfm(at)gmail(dot)com>, Jelte Fennema <Jelte(dot)Fennema(at)microsoft(dot)com>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Andres Freund <andres(at)anarazel(dot)de>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com> |
Subject: | Re: [EXTERNAL] Re: Add non-blocking version of PQcancel |
Date: | 2024-03-28 09:31:30 |
Message-ID: | CAGECzQS0kFOUkZHzgfUTOTzFanOh0SSO2wGEdsGYRfrX7863Vg@mail.gmail.com |
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On Wed, 27 Mar 2024 at 19:46, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
>
> On 2024-Mar-27, Alvaro Herrera wrote:
>
> > I changed it so that the error messages are returned as translated
> > phrases, and was bothered by the fact that if errors happen repeatedly,
> > the memory for them might be leaked. Maybe this is fine depending on
> > the caller's memory context, but since it's only at most one string each
> > time, it's quite easy to just keep track of it so that we can release it
> > on the next.
>
> (Actually this sounds clever but fails pretty obviously if the caller
> does free the string, such as in a memory context reset. So I guess we
> have to just accept the potential leakage.)
Your changes look good, apart from the prverror stuff indeed. If you
remove the prverror stuff again I think this is ready to commit.
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