log.py 文件源码

def stop_reactor(exit_code=0):
    '''
    Stop the reactor and exit with exit_code.
    If exit_code is None, don't exit, just return to the caller.
    exit_code must be between 1 and 255.
    '''
    if exit_code is not None:
        logging.warning("Exiting with code {}".format(exit_code))
    else:
        # Let's hope the calling code exits pretty soon after this
        logging.warning("Stopping reactor")

    try:
        reactor.stop()
    except ReactorNotRunning:
        pass

    # return to the caller and let it decide what to do
    if exit_code == None:
        return

    # a graceful exit
    if exit_code == 0:
        sys.exit()

    # a hard exit
    assert exit_code >= 0
    assert exit_code <= 127
    os._exit(exit_code)