命名ExecutorService的线程和线程池 [英] Naming threads and thread-pools of ExecutorService

问题描述

假设我有一个使用 Executor 框架的应用程序

Let's say I have an application that utilizes the Executor framework as such

Executors.newSingleThreadExecutor().submit(new Runnable(){
    @Override
    public void run(){
        // do stuff
    }
}

当我在调试器中运行此应用程序时，将使用以下（默认）名称创建一个线程： 线程[pool-1-thread-1] 。正如您所看到的，这不是非常有用，据我所知， Executor 框架没有提供一种简单的方法来命名创建的线程或线程池。

When I run this application in the debugger, a thread is created with the following (default) name: Thread[pool-1-thread-1]. As you can see, this isn't terribly useful and as far as I can tell, the Executor framework does not provide an easy way to name the created threads or thread-pools.

那么，如何提供名称？线程/线程池？例如，线程[FooPool-FooThread] 。

So, how does one go about providing names for the threads/thread-pools? For instance, Thread[FooPool-FooThread].

推荐答案

您可以提供 ThreadFactory 到 newSingleThreadScheduledExecutor（ ThreadFactory threadFactory） 。工厂将负责创建线程，并且可以命名它们。

You could supply a ThreadFactory to newSingleThreadScheduledExecutor(ThreadFactory threadFactory). The factory will be responsibe for creating threads, and will be able to name them.

引用 Javadoc ：

创建新线程

Creating new threads

使用 ThreadFactory 创建新线程。如果没有另外指定，则使用 Executors.defaultThreadFactory（），它创建的线程都在同一个 ThreadGroup 中并具有相同的 NORM_PRIORITY 优先级和非守护程序状态。通过提供不同的 ThreadFactory ，您可以更改线程的名称，线程组，优先级，守护程序状态等。如果 ThreadFactory 通过从 newThread 返回null询问时无法创建线程，执行程序将继续，但可能无法执行任何任务

New threads are created using a ThreadFactory. If not otherwise specified, a Executors.defaultThreadFactory() is used, that creates threads to all be in the same ThreadGroup and with the same NORM_PRIORITY priority and non-daemon status. By supplying a different ThreadFactory, you can alter the thread's name, thread group, priority, daemon status, etc. If a ThreadFactory fails to create a thread when asked by returning null from newThread, the executor will continue, but might not be able to execute any tasks

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