python多线程控制

利用wait的阻塞机制, 就能够实现暂停和恢复了, 再配合循环判断标识位, 就能实现退出了

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#!/usr/bin/env python # coding: utf-8   import threading import time     class Job(threading.Thread):       def __init__(self, *args, **kwargs):         super(Job, self).__init__(*args, **kwargs)         self.__flag = threading.Event()     # 用于暂停线程的标识         self.__flag.set()       # 设置为True         self.__running = threading.Event()      # 用于停止线程的标识         self.__running.set()      # 将running设置为True       def run(self):         while self.__running.isSet():             self.__flag.wait()      # 为True时立即返回, 为False时阻塞直到内部的标识位为True后返回             print time.time()             time.sleep(1)       def pause(self):         self.__flag.clear()     # 设置为False, 让线程阻塞       def resume(self):         self.__flag.set()    # 设置为True, 让线程停止阻塞       def stop(self):         self.__flag.set()       # 将线程从暂停状态恢复, 如何已经暂停的话         self.__running.clear()        # 设置为False

　　测试代码

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a = Job() a.start() time.sleep(3) a.pause() time.sleep(3) a.resume() time.sleep(3) a.pause() time.sleep(2) a.stop()