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ing; /* pending operations to be processed */
struct sem_queue **sem_pending_last; /* last pending operation */
struct sem_undo *undo; /* undo requests on this array */
unsigned long sem_nsems; /* no. of semaphores in array */
};
其中，sem_queue结构如下：
/* 系统中每个因为信号灯而睡眠的进程，都对应一个sem_queue结构*/
struct sem_queue {
struct sem_queue * next; /* next entry in the queue */
struc页码：[1] [2] [3] [4] [5] [6] [7] [8] 第4页、共8页 |
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