关于PV操作 在计算机操作系统中,PV操作是进程管理中的难点. 首先应弄清PV操作的含义:PV操作由P操作原语和V操作原语组成(原语是不可中断的过程),(About PV operation in computer operation system, PV operation is a difficulty in process management. First, we should understand the meaning of PV operation: PV operation is