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

[Dan Nicolaescu <dann@ics.uci.edu>]

Ted Zlatanov <tzz@lifelogs.com> writes:

  > On Thu, 06 Sep 2007 11:43:15 -0700 Dan Nicolaescu <dann@ics.uci.edu> 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?

Can you try to do what the comment in the code says: add a call to
add_keyboard_wait_descriptor? Probably mac_term_init is the place to
do that.