在Java中增加信号量允许

Question

我可以在Java中为信号量添加更多许可吗？

Semaphore s = new Semaphore(3);

在代码中的某个地方之后,我想将许可证更改为4.这可能吗？

Answer 1

是.该释放方法(IMO混淆的命名)可用于递增许可以来,从文档:

There is no requirement that a thread that releases a permit must 
have acquired that permit by calling acquire. 
Correct usage of a semaphore is established by programming convention
in the application. 

换一种说法:

semaphore.release(10);

如果线程调用没有获得任何许可,将增加10个许可.