Pythom implementation for Reader Writer Problem

Author: OmkarPathak

Programs/P36_SimpleReaderWriter.py

@@ -0,0 +1,41 @@
+#Author: OMKAR PATHAK
+#In this example, we will see how to implement a simple reader Writer program using Python (Mutex)
+
+import threading as thread
+import random
+
+global x                #Shared Data
+x = 0
+lock = thread.Lock()    #Lock for synchronising access
+
+def Reader():
+    global x
+    print('Reader is Reading!')
+    lock.acquire()      #Acquire the lock before Reading (mutex approach)
+    print('Shared Data:', x)
+    lock.release()      #Release the lock after Reading
+    print()
+
+def Writer():
+    global x
+    print('Writer is Writing!')
+    lock.acquire()      #Acquire the lock before Writing
+    x += 1              #Write on the shared memory
+    print('Writer is Releasing the lock!')
+    lock.release()      #Release the lock after Writing
+    print()
+
+if __name__ == '__main__':
+    for i in range(0, 10):
+        randomNumber = random.randint(0, 100)   #Generate a Random number between 0 to 100
+        if(randomNumber > 50):
+            Thread1 = thread.Thread(target = Reader)
+            Thread1.start()
+        else:
+            Thread2 = thread.Thread(target = Writer)
+            Thread2.start()
+
+Thread1.join()
+Thread2.join()
+
+# print(x)