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SimpleReaderWriter.py
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SimpleReaderWriter.py
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#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)