Searched refs:head_sem (Results 1 – 2 of 2) sorted by relevance
16 sem_init(&mbox->head_sem, 1); /* Head mutex */ in mbox_init()31 sem_down(&mbox->head_sem, 0); in mbox_post()38 sem_up(&mbox->head_sem); in mbox_post()
21 struct semaphore head_sem; /* Head pointer semaphore */ member