import threading
import random
import time
class Publisher(threading.Thread):
def __init__(self, integers, condition):
self.condition = condition
self.integers = integers
threading.Thread.__init__(self)
def run(self):
while True:
integer = random.randint(0,1000)
self.condition.acquire()
print("Condition Acquired by Publisher: {}".format(self.name))
self.integers.append(integer)
print("Publisher {} appending to array: {}".format(self.name, integer))
self.condition.notify()
print("Condition Released by Publisher: {}".format(self.name))
self.condition.release()
time.sleep(1)
class Subscriber(threading.Thread):
def __init__(self, integers, condition):
self.integers = integers
self.condition = condition
threading.Thread.__init__(self)
def run(self):
while True:
self.condition.acquire()
print("Condition Acquired by Consumer: {}".format(self.name))
while True:
if self.integers:
integer = self.integers.pop()
print("{} Popped from list by Consumer: {}".format(integer, self.name))
break
print("Condition Wait by {}".format(self.name))
self.condition.wait()
print("Consumer {} Releasing Condition".format(self.name))
self.condition.release()
def main():
integers = []
condition = threading.Condition()
# Our Publisher
pub1 = Publisher(integers, condition)
pub1.start()
# Our Subscribers
sub1 = Subscriber(integers, condition)
sub2 = Subscriber(integers, condition)
sub1.start()
sub2.start()
## Joining our Threads
pub1.join()
consumer1.join()
consumer2.join()
if __name__ == '__main__':
main()
