gateway_process.py 文件源码

def _set_signal_handlers(self):
        self.logger.info('Setting shutdown signal handlers.')
        default_int_handler = signal.default_int_handler
        for sig in self.shutdown_signals:
            handler = signal.getsignal(sig)
            if handler is self._shutdown_handler:
                continue
            elif handler not in [0, default_int_handler]:
                def _handler(*args, **kwargs):
                    try:
                        handler(*args, **kwargs)
                    except RecursionError:
                        return
                    default_int_handler(*args, **kwargs)
                handler = _handler
            else:
                handler = self._shutdown_handler
            signal.signal(sig, handler)

    # -----------------------------------------------------------------------
    # Runs the gateway subprocess and streams it's output to stdout.
    # -----------------------------------------------------------------------