java - Java 中用于线程间使用的互斥体？

Question

我想要 Java 中的互斥体，它让我可以在一个线程中等待它并在另一个线程中释放它。我知道我可以使用容量为 1 的信号量，但问题是“acquire()”方法会抛出“InterruptedException”。 Java中有没有专门的同步方法来实现这个目的？

Answer 1

幸运的是，Semaphore 为您提供了这个方法:)

public void acquireUninterruptibly()

Acquires a permit from this semaphore, blocking until one is available. Acquires a permit, if one is available and returns immediately, reducing the number of available permits by one.

If no permit is available then the current thread becomes disabled for thread scheduling purposes and lies dormant until some other thread invokes the release() method for this semaphore and the current thread is next to be assigned a permit.

If the current thread is interrupted while waiting for a permit then it will continue to wait, but the time at which the thread is assigned a permit may change compared to the time it would have received the permit had no interruption occurred. When the thread does return from this method its interrupt status will be set.