bool queue_peek(struct event_queue *q, struct queue_event *ev)
{
    bool have_msg = false;

    int oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
    corelock_lock(&q->cl);

    if (q->read != q->write)

    *ev = q->events[q->read & QUEUE_LENGTH_MASK];


}