In Part 1 of this series we looked at the history of the binary and counting semaphore, and then went on to discuss some of the associated problem areas.

在第一部分中，我们回顾了二值信号量与计数信号量的历史，并且讨论了信号量的几个问题。

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Hopefully you should now be clear about the core differences between the Binary Semaphore, General (counting) Semaphore and the Mutex.

希望看到这里，你应该对二进制信号量，计数信号量和互斥锁的区别有了清晰的认识。

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