Re: Compilation issues for HASH_STATISTICS and HASH_DEBUG options

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: David Rowley <dgrowleyml(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Compilation issues for HASH_STATISTICS and HASH_DEBUG options
Date: 2025-08-18 01:10:40
Message-ID: aKJ9kBZi6gFGvzS5@paquier.xyz
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On Mon, Aug 18, 2025 at 12:56:02PM +1200, David Rowley wrote:
> One last thing, in order to inform people of breakages sooner than a
> post-commit report from the buildfarm, I wondered is if we should do:
>
> -#ifdef HASH_DEBUG
> +#if defined(HASH_DEBUG) || defined(USE_ASSERT_CHECKING)
>
> The HASH_DEBUG does not add any extra fields, so the overhead only
> amounts to the elog(DEBUG4) line. HASH_STATISTICS adds extra fields
> and counter incrementing, so I don't propose the same treatment for
> that.

If we do that, I guess that we could just remove HASH_DEBUG, keeping
only HASH_STATISTICS.
--
Michael

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