main.py 文件源码

def draw_memory_state(self, mem_box, size_box, start_height, temp_memory, *args):
        # Unpack memory state details
        memory_state = temp_memory['memory_state']
        # wait_queue = temp_memory['processes_waiting']
        event_details = temp_memory['event']
        process_id,arrival_bit,curr_time,burst_time,process_size = event_details

        chart_wid = Widget()
        # Increment in width per unit size
        self.inc = Window.width/(int(data_mem['mem_size'])*1.5)

        # Add description labels
        label = Label(text='Memory state: ', size_hint_x=None, width=self.margin_left)
        mem_box.add_widget(label)
        s_label = Label(text='Size: ', size_hint_x=None, width=self.margin_left, valign='top', halign='center')
        s_label.text_size = s_label.size
        size_box.add_widget(s_label)

        # Draw the memory state rectangles and add size labels
        if not memory_state:
            self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', 0, data_mem['mem_size'])
        else:
            for i,memory_slot in enumerate(memory_state):
                process_id1, start1, end1 = memory_slot       

                if(len(memory_state) == 1): # only tuple in list
                    if(start1 > 0):
                        self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', 0, start1)
                    self.add_process(chart_wid, mem_box, size_box, start_height, process_id1, start1, (end1-start1))

                    if(data_mem['mem_size']-end1 > 0):
                        self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', end1, (data_mem['mem_size']-end1))
                elif(i == len(memory_state)-1): #last tuple, more tuples preceded
                    self.add_process(chart_wid, mem_box, size_box, start_height, process_id1, start1, (end1-start1))
                    if(data_mem['mem_size']-end1 > 0):
                        self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', end1, (data_mem['mem_size']-end1))
                else:
                    process_id2,start2,end2 = memory_state[i+1]
                    if(i == 0): # first tuple, more tuples follow
                        if(start1 > 0):
                            self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', 0, start1)
                    self.add_process(chart_wid, mem_box, size_box, start_height, process_id1, start1, (end1-start1))
                    if(start2-end1 > 0):
                        self.add_process(chart_wid, mem_box, size_box, start_height, 'hole', end1, (start2-end1))

        # Add size label for the end of memory
        s_label = Label(text=str(data_mem['mem_size']), size_hint_x=None, width=self.inc*(data_mem['mem_size']), halign='left', valign='top')
        s_label.text_size = s_label.size
        size_box.add_widget(s_label)

        # Add the widget used to draw the meomory state on the screen
        mem_box.add_widget(chart_wid)
    # Drawing the wait queue