有没有使用当前线程的ExecutorService？

问题描述

我后面是一个兼容的方式来配置线程池的使用或不。理想情况下，其余的代码不应该受到影响。我可以使用线程池1线程，但这不是我想要的。任何想法？

What I am after is a compatible way to configure the use of a thread pool or not. Ideally the rest of the code should not be impacted at all. I could use a thread pool with 1 thread but that isn't quite what I want. Any ideas?

ExecutorService es = threads == 0 ? new CurrentThreadExecutor() : Executors.newThreadPoolExecutor(threads);

// es.execute / es.submit / new ExecutorCompletionService(es) etc

推荐答案

这里有一个非常简单的 Executor （不是 ExecutorService ）实现，只使用当前线程。从实践中的Java并发（基本阅读）窃取这个。

Here's a really simple Executor (not ExecutorService, mind you) implementation that only uses the current thread. Stealing this from "Java Concurrency in Practice" (essential reading).

public class CurrentThreadExecutor implements Executor {
    public void execute(Runnable r) {
        r.run();
    }
}

ExecutorService 是一个更复杂的界面，但可以用相同的方法处理。

ExecutorService is a more elaborate interface, but could be handled with the same approach.

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