Re: igc, macOS avoiding signals

[Eli Zaretskii]

> From: Helmut Eller <eller.helmut@gmail.com>
> Cc: Pip Cet <pipcet@protonmail.com>,  gerd.moellmann@gmail.com,
>   spd@toadstyle.org,  emacs-devel@gnu.org
> Date: Sat, 04 Jan 2025 14:59:50 +0100
> 
> On Fri, Jan 03 2025, Helmut Eller wrote:
> [...]
> > I'm not sure if those differences are acceptable.  I also have no good
> > idea how to reduce it, except inserting more calls to maybe_quit.
> 
> It seems that calling maybe_quit before and after calling functions
> would cure this problem.  With the original maybe_quit restored, as in
> the attached patch, the foo example looks so:
> 
>     1986 100%         main
>     1986 100%           record-samples
>     1986 100%             foo
>     1214  61%               float-time
> 
> Compared to the original
> 
>     1074  54%               float-time
> 
> that seems pretty ok.  Also the bar example
> 
>      812  80%                     animate-place-char
>        6   0%                       window-start
>       29   2%                       beginning-of-line
>       29   2%                       delete-char
>        6   0%                         undo-auto-amalgamate
>       36   3%                       insert-char
>      390  38%                       move-to-column
>       11   1%                         undo-auto--undoable-change
> 
> looks quite good to me.
> 
> WDYT?

I'd make these extra calls only call the SIGPROF handler if the
counter says some signals were missed.  There's no need to affect
other handlers without a good reason.