Re: MPS GC and its implications

[Andrea Corallo]

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> Eli Zaretskii <eliz@gnu.org> writes:
>
>>> From: Gerd Möllmann <gerd.moellmann@gmail.com>
>>> Cc: Helmut Eller <eller.helmut@gmail.com>,  acorallo@gnu.org,
>>>   emacs-devel@gnu.org
>>> Date: Fri, 03 May 2024 13:59:36 +0200
>>> 
>>> Eli Zaretskii <eliz@gnu.org> writes:
>>> 
>>> > I'm worried because it sounds like we don't have a clear understanding
>>> > how this stuff works, and without that we are basically stabbing in
>>> > the dark when faced with a particular issue related to the MPS
>>> > migration.
>>> 
>>> Can't say anything about GDB. Here on macOS, I can, if I want, see the
>>> Mach exceptions being handled, and I've landed there in LLDB as well.
>>
>> The same happens in GDB.  If the result of the exception is SIGSEGV,
>> then GDB should kick in, I think.  Didn't Helmut say something several
>> days ago that he needs to tell GDB to pass SIGSEGV to Emacs?
>
> Yes, he said he had to ignore some signals in GDB. Or was it let them
> pass through?
>
>>> For the rest I can only hope that some confidence will grow over time.
>>
>> Let's hope.  But understanding is better than confidence.
>>
>>> Have you read the old MPS paper from 2002? Maybe that helps.
>>
>> Not yet.  Too busy.
>
> I've also found a very old paper about barriers (90s) which I could send
> you if you want.

If you could send it to me as well I'd apretiate 🙏

Thanks

  Andrea