service.py 文件源码

def reExec(self):
        """
        Removes pidfile, registers an exec to happen after shutdown, then
        stops the reactor.
        """
        self.log.warn("SIGHUP received - restarting")
        try:
            self.log.info("Removing pidfile: {log_source.pidfilePath}")
            os.remove(self.pidfilePath)
        except OSError:
            pass
        self.reactor.addSystemEventTrigger(
            "after", "shutdown", os.execv,
            sys.executable, [sys.executable] + sys.argv
        )
        self.reactor.stop()