使用P、V操作解决经典进程同步问题

Use the P.V operation to solve classical process synchronization problem

简要介绍P、V操作.通过对两个经典同步问题的描述,说明如何使用P、V操作解决实际问题,重点简述了使用信号量机制解决同步问题时容易产生死锁的原因以及解决死锁的方法.

The brief introduction of the P.V operation is made as below.By analysing the two classical process synchronization,how to solve the practical problems by applying P.V operation is indicated,emphatically illustrating both the reason of deadlock easily occurred when applying the signal quantity system and the approaches to cope with deadlock as well.