Fixes for Ctrl-G support on carbon, replacing old timeout based polling

with alarm based polling.
mac.c (sys_select): Redo sys_select to use alarm-based
polling instead of 1 sec timeouts (like solaris).
macterm.c (x_make_frame_visible): Comment in polling on
frame creation.
keyboard.c: Undef SIGIO on Carbon
atimer.c (alarm_signal_handler): Call alarm handlers after
scheduling.
eval.c (Feval): Remove quit_char test
process.c (wait_reading_process_input): Remove clearing
stdin for select call on process input

1 files changed, 6 insertions, 0 deletions

diff --git a/src/atimer.c b/src/atimer.c
index 7e78bdad9c0..9ec0238ff28 100644
--- a/src/atimer.c
+++ b/src/atimer.c
@@ -375,7 +375,9 @@ alarm_signal_handler (signo)
 
       t = atimers;
       atimers = atimers->next;
+#ifndef MAC_OSX
       t->fn (t);
+#endif
 
       if (t->type == ATIMER_CONTINUOUS)
         {
@@ -387,6 +389,10 @@ alarm_signal_handler (signo)
           t->next = free_atimers;
           free_atimers = t;
         }
+#ifdef MAC_OSX
+      /* Fix for Ctrl-G.  Perhaps this should apply to all platforms. */
+      t->fn (t); 
+#endif
 
       EMACS_GET_TIME (now);
     }