Re: dtrace

[Gerd Möllmann]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Gerd Möllmann <gerd.moellmann@gmail.com>
>> Cc: Emacs Devel <emacs-devel@gnu.org>,  Helmut Eller
>>  <eller.helmut@gmail.com>,  Pip Cet <pipcet@protonmail.com>,  Nix
>>  <nix@esperi.org.uk>,  Arsen Arsenović <arsen@gentoo.org>
>> Date: Tue, 14 Jan 2025 08:39:35 +0100
>> 
>> Sam James <sam@gentoo.org> writes:
>> 
>> > Gerd Möllmann <gerd.moellmann@gmail.com> writes:
>> >
>> >> Please find attached the beginnings of DTrace support. The diff is
>> >> based on my Emacs but probably applies to scratch/igc as well.
>> >
>> > Oh, this sounds exciting!
>> >
>> >> [...]
>> >
>> >> [2. text/x-patch; dtrace.diff]...
>> >
>> > This looks empty over here.
>> 
>> Sorry for that. Hope this one works:
>
> Thanks.  Can you tell in a few words what does this patch provide for
> Emacs?

If makes Emacs a dtrace USDT (= Userland Statically Defined Trace)
provider, like Python.

  https://docs.python.org/3/howto/instrumentation.html

With this, a developer can define probes that can be used for all sorts
of things in the C code. The sky is the limit. There is currently only 1
test probe in igc.c to see if the build works.