* syssignal.h: Declare main_thread.

(SIGNAL_THREAD_CHECK): New macro.

* keyboard.c (input_available_signal): Move thread checking code
to macro SIGNAL_THREAD_CHECK and call that macro.
(interrupt_signal): Call SIGNAL_THREAD_CHECK.

* alloc.c (uninterrupt_malloc): Move main_thread to emacs.c.

* emacs.c: Define main_thread.
(main): Initialize main_thread.
(handle_USR1_signal, handle_USR2_signal, fatal_error_signal)
(memory_warning_signal): Call SIGNAL_THREAD_CHECK.

* floatfns.c (float_error): Call SIGNAL_THREAD_CHECK.

* dispnew.c (window_change_signal): Call SIGNAL_THREAD_CHECK.

* sysdep.c (select_alarm): Call SIGNAL_THREAD_CHECK.

* process.c (send_process_trap, sigchld_handler): Call
SIGNAL_THREAD_CHECK.

* data.c (arith_error): Call SIGNAL_THREAD_CHECK.

* atimer.c (alarm_signal_handler): Call SIGNAL_THREAD_CHECK.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index 6284774d092..1884c0ccffa 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2472,6 +2472,7 @@ select_alarm ()
 #else /* not BSD4_1 */
   signal (SIGALRM, SIG_IGN);
 #endif /* not BSD4_1 */
+  SIGNAL_THREAD_CHECK (SIGALRM);
   if (read_alarm_should_throw)
     longjmp (read_alarm_throw, 1);
 }