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# !/usr/bin/env python # -*- coding:utf-8 -*- import Queue import threading import time import re,urllib2 from bs4 import BeautifulSoup class WorkManager(object): def __init__(self, work_num=1000,thread_num=2): self.work_queue = Queue.Queue() self.threads = [] self.__init_work_queue(work_num) self.__init_thread_pool(thread_num) """ 初始化线程 """ def __init_thread_pool(self,thread_num): for i in range(thread_num): self.threads.append(Work(self.work_queue)) """ 初始化工作队列 """ def __init_work_queue(self, jobs_num): for i in range(jobs_num): self.add_job(do_job, i,jobs_num) """ 添加一项工作入队 """ def add_job(self, func, *args): self.work_queue.put((func, list(args))) #任务入队,Queue内部实现了同步机制 """ 等待所有线程运行完毕 """ def wait_allcomplete(self): for item in self.threads: if item.isAlive():item.join() class Work(threading.Thread): def __init__(self, work_queue): threading.Thread.__init__(self) self.work_queue = work_queue self.start() def run(self): #死循环,从而让创建的线程在一定条件下关闭退出 while True: try: do, args = self.work_queue.get(block=False)#任务异步出队,Queue内部实现了同步机制 do(args) self.work_queue.task_done()#通知系统任务完成 except: break #具体要做的任务 def do_job(args): #time.sleep(0.1)#模拟处理时间 url = ‘http://www.baidu.com‘ page = urllib2.urlopen(url) soup = BeautifulSoup(page.read(), "html.parser") print soup.title.string,list(args),args[0] #print agrs #print threading.current_thread(), list(args) if __name__ == ‘__main__‘: start = time.time() ‘‘‘开始‘‘‘ work_manager = WorkManager(100, 2) work_manager.wait_allcomplete() end = time.time() print "cost all time: %s" % (end-start)
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原文地址:http://my.oschina.net/Alexmyj/blog/522113