Horton

Re: Detection of hadware feature => please do not use signal

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bastien Roucariès <rouca@debian.org>
Cc: pgsql-bugs@lists.postgresql.org, Heikki Linnakangas <hlinnaka@iki.fi>
Date: 2024-10-31T20:16:49Z
Lists: pgsql-bugs 
Bastien =?ISO-8859-1?Q?Roucari=E8s?= <rouca@debian.org> writes:
> Le jeudi 31 octobre 2024, 17:29:45 UTC Heikki Linnakangas a écrit :
>> Why is it bad?

> for a binary it is maybe safe for a library it is unsafe in Multi thread context to capture signal...

[ shrug... ] If we're concerned about that, we should hardly be less
concerned on other platforms than we are on Linux.

(AFAIK, we do not execute the code in question in any libraries.)

			regards, tom lane

Commits

  1. Update configure probes for CFLAGS needed for ARM CRC instructions.

  2. Support runtime CRC feature probing on NetBSD/ARM using sysctl().

  3. Use auxv to check for CRC32 instructions on ARM.

  4. Improve our method for probing the availability of ARM CRC instructions.