java - 我如何知道阻塞库方法是否在它们拥有的线程中执行？

Question

JCIP 的摘要 -

Tasks do not execute in threads they own; they borrow threads owned by a service such as a thread pool.....

This is why most blocking library methods simply throw InterruptedException in response to an interrupt. They will never execute in a thread they own,..

考虑线程中的片段:

void run(){
   try{
       blockingQueue.put(...);          // statement 1
   }catch(InterruptedException e){
       // exception handling....
   }
}

由于BlockingQueue.put()是一个阻塞方法，这是否意味着任务(语句1)永远不会在它拥有的上述线程中执行？

Answer 1

Tasks do not execute in threads they own

意味着任务本身不拥有线程，它只在它借用的线程中执行。也就是说，我们无法在不为其分配线程的情况下启动任务，因为任务本身无法创建线程。

在您的代码中，任务(语句 1)在您为其分配的线程(run 方法所在的线程)中执行，任务(语句 1)不会在它自己(创建)的线程中执行。