Python如何用信号杀死队列中阻塞的线程?

2022-01-21 00:00:00 python multithreading queue

问题描述

我在一个队列上启动了一堆线程,我想在发送 SIGINT (Ctrl+C) 时终止它们.处理这个问题的最佳方法是什么?

I start a bunch of threads working on a queue and I want to kill them when sending the SIGINT (Ctrl+C). What is the best way to handle this?

targets = Queue.Queue()
threads_num = 10
threads = []

for i in threads_num:
    t = MyThread()
    t.setDaemon(True)
    threads.append(t)
    t.start()

targets.join()


解决方案

不是Ctrl+C SIGINT吗?

无论如何,您可以为适当的信号安装一个处理程序,并在处理程序中:

Anyway, you can install a handler for the appropriate signal, and in the handler:

  • 设置一个全局标志,指示工人退出,并确保他们定期检查它
  • 或将 10 个关闭令牌放入队列中,并让工作人员在弹出此魔术令牌时退出
  • 或设置一个指示主线程推送这些令牌的标志,确保主线程检查该标志

等等.这主要取决于您要中断的应用程序的结构.

etc. Mostly it depends on the structure of the application you're interrupting.

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