Re: 23.0.50; MacOS X 10.4: very slow visuals, multi-tty patch suspected

[Ted Zlatanov]

On Thu, 06 Sep 2007 11:43:15 -0700 Dan Nicolaescu <address@hidden> wrote: 

DN> Look for a long thread in the past few weeks with the subject
DN> "CVS HEAD fails to build on OSX 10.4"

I looked at the thread more carefully.  Chad Brown reported a very
specific issue exactly like the one I experienced, with the symptom
being that keypresses are handled very slowly, but he couldn't debug it
further because Emacs crashed.  Mitsuharu commented in the thread:

> As multi-tty no longer does `FD_SET (0, &input_wait_mask)' in
> process.c, if no `add_keyboard_wait_descriptor' calls are made, then
> Carbon Emacs reads events from the window system only rarely via
> polling with SIGALRM and becomes very unresponsive as reported.

Mitsuharu, can you tell us if you think this problem can be solved
easily?  Regardless of the state of the Carbon/Cocoa/etc ports, I'd like
to have something that works in the CVS Emacs for MacOS users.  Can we
just reintroduce that FD_SET call, or will that break other things?
Should we increase the frequency of the SIGALRM polling instead?

If Karoly Lorentey is around, maybe we can get their comments as well.

Thanks
Ted