Java Semaphore and Condition Note

最新推荐文章于 2024-03-04 08:32:57 发布

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本文探讨了Semaphore和Mutex在控制线程执行数量上的区别，解释了Semaphore如何允许定义的数量的线程同时获取资源，而Mutex仅允许一个线程获取资源。通过对比实例，清晰阐述了两者在并发编程中的应用。

Semaphore is used to control the number of threads executing. There will be fixed set of resources. The resource count will gets decremented every time when a thread owns the same. When the semaphore count reaches 0 then no other threads are allowed to acquire the resource. The threads get blocked till other threads owning resource releases. In short, the main difference is how many threads are allowed to acquire the resource at once ? Mutex --its ONE. Semaphore -- its DEFINED_COUNT, ( as many as semaphore count)

http://stackoverflow.com/questions/3513045/conditional-variable-vs-semaphore