#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)