Question

我正在尝试检测python脚本中的系统关闭，在该脚本中我需要正常停止线程它只会在我杀死-15 pid时捕获它，但是当我执行shutdown -P或shutdown -r时它不会捕获信号

import time
import threading
import signal


class Job(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
        self.shutdown_flag = threading.Event()

    def run(self):
        while not self.shutdown_flag.is_set():
            time.sleep(0.5)

        f = open('threads.log', 'a')
        f.write('%s Thread #%s stopped\n' % self.ident)
        f.close()


class ServiceExit(Exception):
    pass


def service_shutdown(signum, frame):
    print('Caught signal %d' % signum)
    raise ServiceExit


def main():

    signal.signal(signal.SIGTERM, service_shutdown)
    signal.signal(signal.SIGINT, service_shutdown)

    try:
        j1 = Job()
        j2 = Job()
        j1.start()
        j2.start()

        while True:
            time.sleep(0.5)

    except ServiceExit:
        j1.shutdown_flag.set()
        j2.shutdown_flag.set()
        j1.join()
        j2.join()

    print('Exiting main program')

Answer 1

不是它没有捕获信号，而是那个时候没有发送信号。您必须配置systemd才能为您的程序做到这一点。

SIGTERM不会在关机时被困

1 个答案: