mq_len
int mq_len;
mq->mq_len = 0;
mq->mq_len = 0;
return (mq->mq_len == 0);
return (mq->mq_maxlen > 0 && mq->mq_len >= mq->mq_maxlen);
return (mq->mq_len);
mq->mq_len++;
mq->mq_len--;
mq->mq_len++;
mq_dst->mq_len += mq_src->mq_len;
mq_src->mq_len = 0;
#define mq_full(_mq) (mq_len((_mq)) >= (_mq)->mq_maxlen)
if (mq_len(mq) >= mq->mq_maxlen) {
if (mq_len(mq) < mq->mq_maxlen)
if (mq_len(mq) < mq->mq_maxlen)
if (mq_len(&ni->ni_savedq) > 0) {