54     T *front;  variable
96     front = NULL;  in Ril_queue()
107     temp = this->front;  in dequeue()
108     if(NULL != this->front->p_next) {  in dequeue()
109         this->front = this->front->p_next;  in dequeue()
111         this->front = NULL;  in dequeue()
123     if(NULL == this->front) {  in enqueue()
124         this->front = request;  in enqueue()
127         request->p_next = this->front;  in enqueue()
128         this->front = request;  in enqueue()
141     for(T **ppCur = &(this->front); *ppCur != NULL; ppCur = &((*ppCur)->p_next)) {  in checkAndDequeue()
160     if(this->front == NULL) {  in empty()