Semaphore is also known as signal lock, mainly used in inter-process synchronization and mutual exclusion, are used in mutually exclusive, it is usually as a resource lock. Semaphore usually through two atomic operations wait (P) and signal (V) to access. semaphore wait operation so that the value of+ 1, signal operation of the signal value of the volume of-1. This procedure simulates the operation of the operating system pv

pv
..\basic.h
..\pv.cpp
..\pv.dsp
..\pv.dsw
..\pv.ncb
..\pv.opt
..\pv.plg

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