52     pub fn enqueue(&mut self, pcb: &'static mut process_control_block) {  in enqueue()
57         if pcb.pid == 0 {  in enqueue()
61         self.queue.push_back(pcb);  in enqueue()
80     pub fn enqueue_front(&mut self, pcb: &'static mut process_control_block) {  in enqueue_front()
85         if pcb.pid == 0 {  in enqueue_front()
89         self.queue.push_front(pcb);  in enqueue_front()
161     pub fn enqueue_front(&mut self, pcb: &'static mut process_control_block) {  in enqueue_front()
162         self.cpu_queue[pcb.cpu_id as usize][pcb.priority as usize].enqueue_front(pcb);  in enqueue_front()
214     fn enqueue(&mut self, pcb: &'static mut process_control_block) {  in enqueue()
215         let cpu_id = pcb.cpu_id;  in enqueue()
216         let cpu_queue = &mut self.cpu_queue[pcb.cpu_id as usize];  in enqueue()
217         cpu_queue[cpu_id as usize].enqueue(pcb);  in enqueue()