Lines Matching refs:head
43 #define head sp->_fifohead
49 (head >= FIFO_SIZE-1) \
50 ? head = 0 \
51 : head++; \
52 if (head == tail) \
53 head = -1, tail = 0; \
56 (head <= 0) \
57 ? head = FIFO_SIZE-1 \
58 : head--; \
59 if (head == tail) \
66 if (tail == head) \
73 if (head == tail) \
82 #define cooked_key_in_fifo() ((head >= 0) && (peek != head))
83 #define raw_key_in_fifo() ((head >= 0) && (peek != tail))