from eventlet import tpool


def dummy_work():
    i = 0
    while True:
        print("...working {0}".format(i))
        time.sleep(10)
        i += 1

if __name__ == '__main__':
    def kill_children(*args):
        print("Catch Signal")
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        os.killpg(0, signal.SIGTERM)
        sys.exit()
    signal.signal(signal.SIGTERM, kill_children)
    try:
        tpool.execute(dummy_work)
    except SystemExit:
        print("Catch SExit")
        raise