如何进行延迟的非阻塞函数调用 [英] How to make a delayed non-blocking function call

问题描述

我想稍微延迟地调用HashSet的add函数，但又不要阻塞当前线程.是否有一个简单的解决方案来实现以下目标:

I want to call the add function of an HashSet with some delay, but without blocking the current thread. Is there an easy solution to achieve something like this:

Utils.sleep(1000, myHashSet.add(foo)); //added after 1 second
//code here runs immediately without delay
...

推荐答案

您可以使用它将在一个单独的线程上执行1秒后执行您的代码.但是，请注意同时对myHashSet进行修改.如果您要同时从其他线程修改集合或尝试对其进行迭代，则可能会遇到麻烦，需要使用锁.

It will execute your code after 1 second on a separate thread. Be careful about concurrent modifications of myHashSet though. If you are modifying the collection at the same time from a different thread or trying to iterate over it you may be in trouble and will need to use locks.

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