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touchy: exit cleanly on SIGTERM #4077

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touchy: exit cleanly on SIGTERM #4077

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9 changes: 9 additions & 0 deletions src/emc/usr_intf/touchy/touchy.py
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Original file line number Diff line number Diff line change
Expand Up @@ -905,4 +905,13 @@ def trivkins(self):
else:
res = os.spawnvp(os.P_WAIT, "halcmd", ["halcmd", "-i", inifile, "-f", f])
if res: raise SystemExit(res)

# Exit cleanly on SIGTERM. Without this touchy ignores the signal
# (GLib/PyGObject absorbs it), so a caller has to escalate to SIGKILL.
# The handler defers the quit to the main loop, since GTK calls are not
# safe directly from a signal handler.
def _signal_quit(signum, frame):
GLib.idle_add(Gtk.main_quit)
signal.signal(signal.SIGTERM, _signal_quit)

Gtk.main()
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