运行多个线程的JVM如何处理ctrl-c，w/w和w/o shutdown钩子? [英] How does a JVM running multiple threads handle ctrl-c, w/ and w/o shutdown hooks?

问题描述

无法在线找到此答案.当按Ctrl + C时:

Could not find this answer online. When Ctrl+C is hit:

• 当我们没有任何关闭钩子时，正在运行的线程会如何处理-它们是否都被InterruptedException击中?
• 当我们有关闭钩子时，我知道关闭钩子会以任意顺序在新线程中运行.但是现有的正在运行的线程会怎样?他们仍然每个人都受到InterruptedException的打击吗?

谢谢！

推荐答案

经典书籍"Java Concurrency in Practice"中有关于JVM关闭的一章(7.4)，您应该阅读该书，但是这里有一些相关的引号:

The classic book "Java Concurrency in Practice" has a chapter (7.4) on the JVM shutdown, you should read that, but here are some relevant quotes:

如果在关闭时仍在运行任何应用程序线程(守护程序或非守护程序)，它们将继续与关闭进程同时运行.

If any application threads (daemon or nondaemon) are still running at shutdown time, they continue to run concurrently with the shutdown process.

JVM不会尝试停止或中断在关闭时仍在运行的任何应用程序线程；当JVM最终停止时，它们会突然终止.

The JVM makes no attempt to stop or interrupt any application threads that are still running at shutdown time; they are abruptly terminated when the JVM eventually halts.

因此线程不会被中断，但是您可以根据需要从关闭挂钩中显式地中断线程.

So the threads are not interrupted, but you can interrupt them explicitly from the shutdown hook, if you wish.

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