python多线程之事件Event的使用详解

# coding:utf-8

import threading
import time

event = threading.Event()


def chihuoguo(name):
  # 等待事件，进入等待阻塞状态
  print '%s 已经启动' % threading.currentThread().getName()
  print '小伙伴 %s 已经进入就餐状态！'%name
  time.sleep(1)
  event.wait()
  # 收到事件后进入运行状态
  print '%s 收到通知了.' % threading.currentThread().getName()
  print '小伙伴 %s 开始吃咯！'%name

# 设置线程组
threads = []

# 创建新线程
thread1 = threading.Thread(target=chihuoguo, args=("a", ))
thread2 = threading.Thread(target=chihuoguo, args=("b", ))

# 添加到线程组
threads.append(thread1)
threads.append(thread2)

# 开启线程
for thread in threads:
  thread.start()

time.sleep(0.1)
# 发送事件通知
print '主线程通知小伙伴开吃咯！'
event.set()

# coding:utf-8

import threading
import time

event = threading.Event()


def chiHuoGuo(name):
  # 等待事件，进入等待阻塞状态
  print '%s 已经启动' % threading.currentThread().getName()
  print '小伙伴 %s 已经进入就餐状态！'%name
  time.sleep(1)
  event.wait()
  # 收到事件后进入运行状态
  print '%s 收到通知了.' % threading.currentThread().getName()
  print '%s 小伙伴 %s 开始吃咯！'%(time.time(), name)


class myThread (threading.Thread):  # 继承父类threading.Thread
  def __init__(self, name):
    '''重写threading.Thread初始化内容'''
    threading.Thread.__init__(self)

    self.people = name

  def run(self):  # 把要执行的代码写到run函数里面 线程在创建后会直接运行run函数
    '''重写run方法'''

    chiHuoGuo(self.people)   # 执行任务
    print("qq交流群：226296743")
    print("结束线程: %s" % threading.currentThread().getName())

# 设置线程组
threads = []
# 创建新线程
thread1 = myThread("a")
thread2 = myThread("b")
thread3 = myThread("c")

# 添加到线程组
threads.append(thread1)
threads.append(thread2)
threads.append(thread3)

# 开启线程
for thread in threads:
  thread.start()

time.sleep(0.1)
# 发送事件通知
print '集合完毕，人员到齐了，开吃咯！'
event.set()