Re: Confusing comment in TransactionIdIsInProgress

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: Jim Nasby <jim(at)nasby(dot)net>
Cc: pgsql-hackers Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Confusing comment in TransactionIdIsInProgress
Date: 2011-01-18 08:51:44
Message-ID: 4D3554A0.5040205@enterprisedb.com
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On 18.01.2011 07:15, Jim Nasby wrote:
> Shouldn't the comment read "If first time through"?
>
> /*
> * If not first time through, get workspace to remember main XIDs in. We
> * malloc it permanently to avoid repeated palloc/pfree overhead.
> */
> if (xids == NULL)
> {
> ...
> xids = (TransactionId *) malloc(maxxids * sizeof(TransactionId));

Huh, yes, I'm amazed that no-one have noticed. I must've read that piece
of code dozens of times in the last couple of years myself, and that
sentence was even copy-pasted to GetConflictingVirtualXIDs() later in
that file, including that thinko.

Thanks, fixed both copies.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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