有不同的信号量类：区分优先级，随着程序大小的增长根据活动进行特殊处理(例如，fifo次序，使用多个读进程)。

Have different kinds of semaphore classes: prioritization, specialization based on activity (for example, FIFO ordering, taking advantage of multiple readers) as the program increases in size.

youdao

有不同的信号量类：区分优先级，随着程序大小的增长根据活动进行特殊处理(例如，fifo次序，使用多个读进程)。

Have different kinds of semaphore classes: prioritization, specialization based on activity (for example, FIFO ordering, taking advantage of multiple readers) as the program increases in size.

youdao