mq_getfd_np
int mq_getfd_np(mqd_t mqd);
FD_SET(mq_getfd_np(mq), &set);
status = select(mq_getfd_np(mq) + 1, &set, NULL,
FD_SET(mq_getfd_np(mq), &set);
status = select(mq_getfd_np(mq) + 1, NULL, &set,
EV_SET(&kev, mq_getfd_np(mq), EVFILT_READ, EV_ADD, 0, 0, 0);
EV_SET(&kev, mq_getfd_np(mq), EVFILT_WRITE, EV_ADD, 0, 0, 0);
int fd = mq_getfd_np(handle);
int fd = mq_getfd_np(handle);