一道關(guān)于操作系統(tǒng)的題目,是臨界區(qū)問題還是信號量問題?請寫出代碼?
There is only one single-log bridge(獨木橋) over the river connecting the west and the east.If there is some one on the bridge,people from other direction must wait until there is no person on the bridge.While if several people go the same direction,they can pass through at the same time.Write a code sketch for two kinds of people,people from west to east and people from east to west,which follows the given rules and guarantees that two kinds of people are never on the bridge at the same time using semaphores.