Thread.currentThread（）如何工作？ [英] How does Thread.currentThread() work?

问题描述

Thread.currentThread（）是一个 static 方法，它提供对当前正在执行的Thread的引用（基本上是对'this'线程的引用）。

Thread.currentThread() is a static method which provides reference to currently executing Thread (basically a reference to 'this' thread).

在Java中无法访问静态方法中的非静态成员（尤其是 this ），所以 currentThread（）是一种本机方法。

Accessing non-static members (especially this) inside a static method is not possible in Java, so currentThread() is a native method.

currentThread（）方法如何在幕后工作？

How does currentThread() method work behind the scenes?

推荐答案

(basically a reference to 'this' thread)

错了。此处涉及此引用。

您正在混合线程本机资源，意味着执行线程;和 Thread ，这是一个Java类。线程代码不会在 Thread 实例中运行，该实例只是Java的线程控制的句柄。很像文件实例不是文件。

You are mixing up a thread as a native resource, meaning the thread of execution; and Thread, which is a Java class. Thread code does not run "within" the Thread instance, that instance is just your handle into Java's thread control. Much like a File instance is not a file.

所以， Thread.currentThread（）是一种方法，可以检索负责执行线程的线程的实例。该方法被调用。除非您正在探索特定JVM实现的细节，否则Java究竟是如何实现这一细节的，除非您正在探索特定JVM实现的细节。

So, Thread.currentThread() is a way for you to retrieve the instance of Thread in charge of the thread-of-execution inside which the method is called. How exactly Java does this is an implementation detail which should not be your concern unless you are exploring the details of a particular JVM implementation.

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