This is the code used to create the System V semaphore: int semget (key_t key, int nsems, int semflg). Following are the attributes to this code.

用来创建System v信号量使用的代码是：int semget (key_t key, int nsems, int semflg)。

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Activity code is assigned automatically by the system, used to share this project;

活动编码是系统自动分配的，用于对外分享此项目；

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