226     if ( sc->aen_q.head == sc->aen_q.tail ) {  in tws_retrive_aen()
249             /* index = tail-1 */   in tws_retrive_aen()
250             index = (sc->aen_q.depth + sc->aen_q.tail - 1) % sc->aen_q.depth;  in tws_retrive_aen()
260             }while ( index != sc->aen_q.tail );  in tws_retrive_aen()
261             if ( index == sc->aen_q.tail ) {  in tws_retrive_aen()
274             }while ( index != sc->aen_q.tail );  in tws_retrive_aen()
275             if ( index == sc->aen_q.tail ) {  in tws_retrive_aen()
375     volatile u_int16_t head, tail;  in tws_circular_aenq_insert()  local
380     tail = cq->tail;  in tws_circular_aenq_insert()
381     retr = q[tail].retrieved;  in tws_circular_aenq_insert()
383     memcpy(&q[tail], aen, sizeof(struct tws_event_packet));  in tws_circular_aenq_insert()
384     tail = (tail+1) % cq->depth;  in tws_circular_aenq_insert()
386     if ( head == tail ) { /* q is full */  in tws_circular_aenq_insert()
391     cq->tail = tail;  in tws_circular_aenq_insert()