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producerconsumer.py
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executable file
·77 lines (59 loc) · 1.65 KB
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#!/usr/bin/env python
#! encoding=utf-8
# Author : [email protected]
# Blog : http://kesalin.github.io
# Date : 2016/07/26
# Description : Producer-Consumer
# Version : 1.0.0.0
# Python Version: Python 2.7.3
from threading import Thread, Condition
import time
import random
queue = []
MAX_NUM = 5
condition = Condition()
class ProducerThread(Thread):
isExit = False
def run(self):
nums = range(MAX_NUM)
global queue
while not self.isExit:
condition.acquire()
if len(queue) == MAX_NUM:
print("Queue full, producer is waiting")
condition.wait()
print("Space in queue, Consumer notified the producer")
num = random.choice(nums)
queue.append(num)
print("Produced", num)
condition.notify()
condition.release()
time.sleep(random.random())
def end(self):
self.isExit = True
class ConsumerThread(Thread):
isExit = False
def run(self):
global queue
while not self.isExit:
condition.acquire()
if not queue:
print("Nothing in queue, consumer is waiting")
condition.wait()
print("Producer added something to queue and notified the consumer")
num = queue.pop(0)
print("Consumed", num)
condition.notify()
condition.release()
time.sleep(random.random())
def end(self):
self.isExit = True
p = ProducerThread()
c = ConsumerThread()
p.start()
c.start()
time.sleep(5)
p.end()
c.end()
p.join()
c.join()