python的signal

1、示例：

def main(argv):
    ......................
    for sig in (signal.SIGTERM, signal.SIGINT):
        signal.signal(sig, shutdown_signal)
def shutdown_signal(signum, frame):
    """
    关闭掉整个进程
    :param signum:
    :param frame:
    :return:
    """
    LOG.warning("shutting down, got signal %d", signum)

　　

2、信号

SIGINT

SIGTERM

SIGKILL

SIGALRM