Horton

Re: define pg_structiszero(addr, s, r)

Michael Paquier <michael@paquier.xyz>

View thread View on postgr.es
From: Michael Paquier <michael@paquier.xyz>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>, Peter Smith <smithpb2250@gmail.com>, Peter Eisentraut <peter@eisentraut.org>, Heikki Linnakangas <hlinnaka@iki.fi>, pgsql-hackers@lists.postgresql.org
Date: 2024-11-01T07:36:45Z
Lists: pgsql-hackers

Attachments

On Fri, Nov 01, 2024 at 08:21:50PM +1300, David Rowley wrote:
> My vote is to just revert this usage of the function. Anything more
> elaborate would need to check pointer alignment before using any types
> larger than char. The previous code does not need to do that because
> the page is going to be at least MAXALIGNed.

Fine, here you go.  The attached reverts back this part in bufpage.c
to what it was in 49d6c7d8daba.
--
Michael

Commits

  1. Use pg_memory_is_all_zeros() in PageIsVerifiedExtended()

  2. Optimize pg_memory_is_all_zeros() in memutils.h

  3. Remove use of pg_memory_is_all_zeros() in bufpage.c

  4. Add pg_memory_is_all_zeros() in memutils.h