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Multiprocessing test/calc_pi.py

@@ -15,15 +15,16 @@ from tkinter.ttk import Frame, Label, Button, Progressbar, Entry
 from tkinter import scrolledtext
 
 if GUI == GUI_WIN:
-    from multiprocessing import Process, Manager, Queue
+    from multiprocessing import Process, Manager, Queue, Value
     from queue import Empty
 else:
     from multiprocessing import Queue, Process
     import queue
 
 from decimal import Decimal, getcontext
+from time import sleep
 
-DELAY1 = 80
+DELAY1 = 20
 DELAY2 = 20
 
 if GUI == GUI_WIN:
@@ -38,6 +39,10 @@ class commonUI(Frame):
 
     def initUI(self):
           
+        self.val = Value('i', 0)
+        self.dig = Value('i', 4000)
+        self.acc = Value('i', 100)
+
         self.parent.title("Pi computation")
         self.pack(fill=BOTH, expand=True)
         
@@ -48,22 +53,23 @@ class commonUI(Frame):
         lbl1.grid(row=0, column=0, sticky=E, padx=10, pady=10)
         
         self.ent1 = Entry(self, width=10)
-        self.ent1.insert(END, "4000")
+        self.ent1.insert(END, self.dig.value)
         self.ent1.grid(row=0, column=1, sticky=W)
         
         lbl2 = Label(self, text="Accuracy:")
         lbl2.grid(row=0, column=2, sticky=E, padx=10, pady=10)
 
         self.ent2 = Entry(self, width=10)
-        self.ent2.insert(END, "100")
+        self.ent2.insert(END, self.acc.value)
         self.ent2.grid(row=0, column=3, sticky=W)        
         
         self.startBtn = Button(self, text="Start", command=self.onStart)
         self.startBtn.grid(row=1, column=0, padx=10, pady=5, sticky=W)
         
-        self.pbar = Progressbar(self, mode='indeterminate')        
+        self.pbar = Progressbar(self, mode='determinate')        
         self.pbar.grid(row=1, column=1, columnspan=3, sticky=W+E)     
-        
+        self.pbar.config(value=0, maximum=self.dig.value)
+
         self.txt = scrolledtext.ScrolledText(self)  
         self.txt.grid(row=2, column=0, rowspan=4, padx=10, pady=5, columnspan=5, sticky=E+W+S+N)
 
@@ -77,14 +83,14 @@ class commonUI(Frame):
                 
         self.p1 = Process(target=generatePi, args=(q, digits, accuracy))
         self.p1.start()
-        self.pbar.start(DELAY2)
         self.after(DELAY1, self.onGetValue)
         
        
     def onGetValue(self):
         
         if (self.p1.is_alive()):
-            
+            self.val.value += 1000
+            self.update_pbar()
             self.after(DELAY1, self.onGetValue)
             return
         else:    
@@ -93,12 +99,14 @@ class commonUI(Frame):
    
                 self.txt.insert('end', q.get(0))
                 self.txt.insert('end', "\n")
-                self.pbar.stop()
                 self.startBtn.config(state=NORMAL)
 
            except Empty:
                 print("queue is empty")
 
+    def update_pbar(self):
+        self.pbar.config(value=self.val.value)
+
 class win_Example(Frame):
       
     def __init__(self, parent):
@@ -120,8 +128,8 @@ if GUI == GUI_WIN:
                 (Decimal(2)/(8*k+4)) - (Decimal(1)/(8*k+5))- \
                 (Decimal(1)/(8*k+6)))
             k += 1
-    
         q.put(pi)
+        time.sleep(1)
 
 class linux_Example(Frame):