Python多线程编程之多线程加锁操作示例

# -*- coding:utf-8 -*-
#! python2
import threading
start_task = 0
task_num = 10000
mu = threading.Lock()  ###通过工厂方法获取一个新的锁对象
class MyThread(threading.Thread):  ###类MyThread继承基类threading.Thread
  def run(self): ##线程启动的入口函数，子类需重写
    global start_task
    global mu
    global start_task
    while start_task < task_num:  ##如果任务没有完成，则继续
      if mu.acquire():  ##加锁
        if start_task < task_num:
          print start_task
          start_task = start_task + 1
        mu.release()  ##释放锁
def test():
  thread_all = []
  for i in range(6): ##for循环创建6个线程
    t = MyThread() ##创建线程
    thread_all.append(t)
    t.start()  ###启动线程
  for i in range(6):
    thread_all[i].join()  ##等待线程结束
if __name__ == "__main__":
  test()