如何从python程序发送信号? [英] How can I send a signal from a python program?

问题描述

我有这段代码可以监听USR1信号

I have this code which listens to USR1 signals

import signal
import os
import time

def receive_signal(signum, stack):
    print 'Received:', signum

signal.signal(signal.SIGUSR1, receive_signal)
signal.signal(signal.SIGUSR2, receive_signal)

print 'My PID is:', os.getpid()

while True:
    print 'Waiting...'
    time.sleep(3)

当我使用kill -USR1 pid

但是如何从上面的python脚本中发送相同的信号，以使其在10秒钟后自动发送USR1并接收它，而无需打开两个终端进行检查?

But how can I send the same signal from within the above python script so that after 10 seconds it automatically sends USR1 and also receives it , without me having to open two terminals to check it?

推荐答案

您可以使用 os.kill():

os.kill(os.getpid(), signal.SIGUSR1)

将此代码放置在您想要发送信号的代码中的任何位置.

Put this anywhere in your code that you want to send the signal from.

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