Lines Matching refs:sema

25 Semaphore_Init(Semaphore *sema, int count, const char *name)
27     Spinlock_Init(&sema->lock, name, SPINLOCK_TYPE_NORMAL);
28     sema->count = count;
30     strncpy(&sema->name[0], name, SEMAPHORE_NAMELEN);
31     TAILQ_INIT(&sema->waiters);
34     LIST_INSERT_HEAD(&semaList, sema, semaphoreList);
39 Semaphore_Destroy(Semaphore *sema)
42     LIST_REMOVE(sema, semaphoreList);
45     Spinlock_Destroy(&sema->lock);
49 Semaphore_Acquire(Semaphore *sema)
54 	Spinlock_Lock(&sema->lock);
55 	if (sema->count > 0) {
56 	    sema->count -= 1;
57 	    Spinlock_Unlock(&sema->lock);
63 	TAILQ_INSERT_TAIL(&sema->waiters, cur, semaQueue);
66 	Spinlock_Unlock(&sema->lock);
72 Semaphore_Release(Semaphore *sema)
76     Spinlock_Lock(&sema->lock);
77     sema->count += 1;
80     thr = TAILQ_FIRST(&sema->waiters);
82 	TAILQ_REMOVE(&sema->waiters, thr, semaQueue);
85     Spinlock_Unlock(&sema->lock);
89 Semaphore_TryAcquire(Semaphore *sema)
91     Spinlock_Lock(&sema->lock);
92     if (sema->count > 0) {
93 	sema->count -= 1;
94 	Spinlock_Unlock(&sema->lock);
97     Spinlock_Unlock(&sema->lock);
104     Semaphore *sema;
109     LIST_FOREACH(sema, &semaList, semaphoreList)
112 	kprintf("%-36s %8d\n", sema->name, sema->count);
113 	TAILQ_FOREACH(thr, &sema->waiters, semaQueue) {