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From: Tom Lane <[email protected]>
To: Joel Jacobson <[email protected]>
Cc: Arseniy Mukhin <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Optimize LISTEN/NOTIFY
Date: Wed, 15 Oct 2025 17:15:15 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
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"Joel Jacobson" <[email protected]> writes:
> I assume the separate "advisory" queue position field
> would actually need to be two struct fields, since a queue position
> consists of a page and an offset, right?

No, I'd think you'd have both

    QueuePosition pos;            /* backend has read queue up to here */
    QueuePosition advisory_pos;   /* backend could skip queue to here */

in QueueBackendStatus.  The other seems way too confusing.

			regards, tom lane

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