166 	int top;  member
172 	if (s->top < 0) {  in top_frame()
177 	*f = s->spine + s->top;  in top_frame()
184 	return s->top >= 0;  in unprocessed_frames()
206 	if (s->top >= MAX_SPINE_DEPTH - 1) {  in push_frame()
224 		struct frame *f = s->spine + ++s->top;  in push_frame()
228 			s->top--;  in push_frame()
247 	struct frame *f = s->spine + s->top--;  in pop_frame()
263 	s->top = -1;  in dm_btree_del()
599 	int r, i = *index, top = 1;  in btree_insert_raw()  local
625 			if (top)  in btree_insert_raw()
648 		top = 0;  in btree_insert_raw()