main.py 文件源码

def SignalHandler(app):
    def signal_action(signal):
        if signal is 1: print("Caught signal SIGHUP(1)")
        elif signal is 2: print("Caught signal SIGINT(2)")
        elif signal is 15: print("Caught signal SIGTERM(15)")
        app.exit_gracefully()

    def handler(*args):
        # Activate GLib signal handler
        signal_action(args[0])

    def idle_handler(*args):
        # Activate python signal handler
        GLib.idle_add(signal_action, priority=GLib.PRIORITY_HIGH)

    def install_glib_handler(sig):
        unix_signal_add = None
        if hasattr(GLib, "unix_signal_add"):
            unix_signal_add = GLib.unix_signal_add
        elif hasattr(GLib, "unix_signal_add_full"):
            unix_signal_add = GLib.unix_signal_add_full
        if unix_signal_add:
            # Register GLib signal handler
            unix_signal_add(GLib.PRIORITY_HIGH, sig, handler, sig)
        else:
            print("WARNING: Can't install GLib signal handler, too old gi.")

    SIGS = [getattr(signal, s, None) for s in "SIGINT SIGTERM SIGHUP".split()]
    for sig in filter(None, SIGS):
        # Register Python signal handler
        signal.signal(sig, idle_handler)
        GLib.idle_add(install_glib_handler, sig, priority=GLib.PRIORITY_HIGH)