Lines Matching refs:tail
270 this.tail = null;
273 // Appends an item to the end of the linked list, adjusting the current tail's
276 if (this.tail !== null) {
277 this.tail._idleNext = item;
278 item._idlePrev = this.tail;
282 this.tail = item;
286 // items and the linked list's head or tail pointers as necessary
298 if (item === this.tail)
299 this.tail = item._idlePrev;
439 queue.head = queue.tail = null;