255 	if (tp->t_outq.c_cc != 0) {  in tty_set_qsize()
520 	if ((q)->c_cc)							\
521 		ndflush(q, (q)->c_cc);					\
687 					if (tp->t_rawq.c_cc + tp->t_canq.c_cc)  in ttyinput_wlock()
754 			if (tp->t_rawq.c_cc)  in ttyinput_wlock()
763 			    tp->t_rawq.c_cc == tp->t_rocount &&  in ttyinput_wlock()
765 				while (tp->t_rawq.c_cc)  in ttyinput_wlock()
842 	if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= TTYHOG) {  in ttyinput_wlock()
844 			if (tp->t_outq.c_cc < tp->t_hiwat)  in ttyinput_wlock()
1107 		*(int *)data = tp->t_outq.c_cc;  in ttioctl()
1112 		*(int *)data = tp->t_outq.c_cn - tp->t_outq.c_cc;  in ttioctl()
1236 		*(int *)data = tp->t_outq.c_cc;  in ttioctl()
1308 		memcpy(tp->t_cc, t->c_cc, sizeof(t->c_cc));  in ttioctl()
1560 		if (tp->t_outq.c_cc <= tp->t_lowat)  in ttpoll()
1627 	kn->kn_data = tp->t_outq.c_cn - tp->t_outq.c_cc;  in filt_ttywrite()
1628 	canwrite = (tp->t_outq.c_cc <= tp->t_lowat) && CONNECTED(tp);  in filt_ttywrite()
1692 	nread = tp->t_canq.c_cc;  in ttnread()
1694 		nread += tp->t_rawq.c_cc;  in ttnread()
1712 	while ((tp->t_outq.c_cc || ISSET(tp->t_state, TS_BUSY)) &&  in ttywait_timo()
1800 	total = tp->t_rawq.c_cc + tp->t_canq.c_cc;  in ttyblock()
1801 	if (tp->t_rawq.c_cc > TTYHOG) {  in ttyblock()
1811 	    (!ISSET(tp->t_lflag, ICANON) || tp->t_canq.c_cc > 0)) {  in ttyblock()
1950 	tp->t_rawq.c_cc = 0;  in ttypend()
2029 			if (qp->c_cc < m)  in ttread()
2041 			if (qp->c_cc <= 0)  in ttread()
2043 			if (qp->c_cc >= m)  in ttread()
2050 			} else if (qp->c_cc > last_cc) {  in ttread()
2060 			if (qp->c_cc > 0)  in ttread()
2071 		last_cc = qp->c_cc;  in ttread()
2087 	} else if ((qp = &tp->t_canq)->c_cc <= 0) {  in ttread()
2166 	if (ISSET(tp->t_state, TS_TBLOCK) && tp->t_rawq.c_cc < TTYHOG / 5) {  in ttread()
2199 	if (tp->t_outq.c_cc > hiwat + 200)  in ttycheckoutq_wlock()
2200 		if (tp->t_outq.c_cc > hiwat) {  in ttycheckoutq_wlock()
2292 		if (tp->t_outq.c_cc > hiwat)  in ttwrite()
2338 					    tp->t_outq.c_cc > hiwat) {  in ttwrite()
2365 			    tp->t_outq.c_cc > hiwat)  in ttwrite()
2385 	hiwat = tp->t_outq.c_cc - 1;  in ttwrite()
2394 	if (tp->t_outq.c_cc <= hiwat) {  in ttwrite()
2420 	if (tp->t_outq.c_cc <= tp->t_lowat) {  in ttypull()
2424 	return tp->t_outq.c_cc != 0;  in ttypull()
2468 				if (tp->t_rocount < tp->t_rawq.c_cc) {  in ttyrub()
2550 	tp->t_rocount = tp->t_rawq.c_cc;  in ttyretype()