shell.py 文件源码

def reap_all(self):
        """
        Kill, as gently as possible, all processes.

        Loop through all processes and try to kill them with
        a sequence of :code:`SIGINT`, :code:`SIGTERM` and
        :code:`SIGKILL`.
        """
        for proc in self._procs:
            ret_code = proc.poll()
            if ret_code is None:
                proc.send_signal(signal.SIGINT)
                time.sleep(3)
            ret_code = ret_code or proc.poll()
            if ret_code is None: # pragma: no coverage
                proc.terminate()
                time.sleep(3)
            ret_code = ret_code or proc.poll() # pragma: no coverage
            if ret_code is None: # pragma: no coverage
                proc.kill()