Re: Reading D-Bus messages

[Ken Brown]

On 9/23/2010 5:03 PM, Eli Zaretskii wrote:
> > Date: Thu, 23 Sep 2010 16:49:32 -0400
> > From: Ken Brown<address@hidden>
> > Cc: emacs-devel<address@hidden>
> >
> > > > Do you understand why gobble_input is called only if SIGIO is defined?
> > >
> > > Don't know. ChangeLog.1 says:
> > >
> > > 1986-01-23  Richard M. Stallman  (address@hidden)
> > >
> > >               * dispnew.c (Fsit_for):
> > >               Call gobble_input only if SIGIO exists.
> > >
> > > 1985-11-01  Richard M. Stallman  (address@hidden)
> > >
> > >               * keyboard.c (gobble_input, input_available_signal,
> > >                 kbd_buffer_store_char):
> > >                 Make these functions exist only if SIGIO is defined.
> > >
> > > 1985-10-16  Richard M. Stallman  (address@hidden)
> > >
> > >               * keyboard.c:
> > >               Get error instead of croaking if want to send SIGTSTP.
> > >               Get compile time error in gobble_input if SIGIO is not
> > >               defined.
> >
> > Well, I'll just try it for a while and see if I notice any problems as a
> > result of using gobble_input without SIGIO.  If not, I'll upload a new
> > Cygwin test release and see what happens.
>
> I'd rather turn the table and ask why is the call to
> xd_read_queued_messages made in gobble_input and not elsewhere?  Why
> are we mixing input from D-Bus with keyboard input?  And why in
> gobble_input?

Regardless of what decision is ultimately made about these questions, 
I'd still like to know why one (and only one) of the calls to 
gobble_input in keyboard.c is made only if SIGIO is defined.  Is this 
something that was needed in 1985 and is no longer relevant?

Ken