4 int pthread_barrier_wait(barrier_t * barrier);
12 - current barrier count, # of threads still needed.
14 unsigned int init_count;
15 - number of threads needed for the barrier to continue.
17 unsigned int curr_event;
21 pthread_barrier_wait(barrier_t *barrier)
25 lll_lock(barrier->lock);
26 if (!--barrier->left) {
27 barrier->left = barrier->init_count;
28 barrier->curr_event++;
29 futex_wake(&barrier->curr_event, INT_MAX)
30 lll_unlock(barrier->lock);
32 return BARRIER_SERIAL_THREAD;
35 event = barrier->curr_event;
37 lll_unlock(barrier->lock);
39 futex_wait(&barrier->curr_event, event)
41 lll_lock(barrier->lock);
42 if (event != barrier->curr_event)
45 lll_unlock(barrier->lock);