# -*- encoding:utf-8 -*-

'''
@Author : dingjiawen
@Date : 2023/10/17 20:44
@Usage : 学习多线程库thread的使用
@Desc :
'''

'''
参考：
[1] https://cuiqingcai.com/3325.html
'''

import queue as Queue
import threading
import time

exitFlag = 0


class myThread(threading.Thread):
    def __init__(self, threadID, name, q):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.q = q

    def run(self):
        print("Starting " + self.name)
        process_data(self.name, self.q)
        print("Exiting " + self.name)


def process_data(threadName, q):
    while not exitFlag:
        # 获得锁，成功获得锁定后返回True
        # 可选的timeout参数不填时将一直阻塞直到获得锁定
        # 否则超时后将返回False
        queueLock.acquire()
        if not workQueue.empty():
            data = q.get()
            queueLock.release()
            print("{0} processing {1}".format(threadName, data))
        else:
            queueLock.release()
        time.sleep(1)


threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = Queue.Queue(10)
threads = []
threadID = 1

# 创建新线程
for tName in threadList:
    thread = myThread(threadID, tName, workQueue)
    thread.start()
    threads.append(thread)
    threadID += 1

# 填充队列
queueLock.acquire()
for word in nameList:
    workQueue.put(word)
# release一个有一个线程能跑
queueLock.release()

# 等待队列清空
while not workQueue.empty():
    pass

# 通知线程是时候退出
exitFlag = 1

# 等待所有线程完成
for t in threads:
    t.join()
print("Exiting Main Thread")