Commit e71f5f1f authored by Akira Kyle's avatar Akira Kyle Committed by Lars Ingebrigtsen

Work around glib messing with signal handlers more than it should

* src/process.c (init_process_emacs): force glib's g_unix_signal
handler into lib_child_handler where it should belong.

Copyright-paperwork-exempt: yes
parent 87003191
Pipeline #7782 failed with stage
in 66 minutes and 4 seconds
......@@ -8217,13 +8217,29 @@ init_process_emacs (int sockfd)
if (!will_dump_with_unexec_p ())
#if defined HAVE_GLIB && !defined WINDOWSNT
/* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
this should always fail, but is enough to initialize glib's
/* Tickle glib's child-handling code. Ask glib to install a
watch source for Emacs itself which will initialize glib's
private SIGCHLD handler, allowing catch_child_signal to copy
it into lib_child_handler. */
g_source_unref (g_child_watch_source_new (getpid ()));
it into lib_child_handler.
Unfortunatly in glib commit 2e471acf, the behavior changed to
always install a signal handler when g_child_watch_source_new
is called and not just the first time it's called. Glib also
now resets signal handlers to SIG_DFL when it no longer has a
watcher on that signal. This is a hackey work around to get
glib's g_unix_signal_handler into lib_child_handler. */
GSource *source = g_child_watch_source_new (getpid ());
catch_child_signal ();
g_source_unref (source);
eassert (lib_child_handler != dummy_handler);
signal_handler_t lib_child_handler_glib = lib_child_handler;
catch_child_signal ();
eassert (lib_child_handler == dummy_handler);
lib_child_handler = lib_child_handler_glib;
catch_child_signal ();
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