python多线程

1.多线程方法

#!/usr/python

#thread

import string, threading, time

def thread_main(a):
    #get thread name
    global count, mutex
    threadname = threading.currentThread().getName()

    for x in xrange(0, int(a)):
        #get lock
        mutex.acquire()
        count = count + 1
        #release lock
        mutex.release()
        print threadname, x, count
        time.sleep(1)

def main(num):

    global count, mutex
    threads = []

    count = 1
    #create lock
    mutex = threading.Lock()
    #create thread object
    for x in xrange(0, num):
        threads.append(threading.Thread(target = thread_main, args=(10,))

2.多线程类

import threading, time

class Test(threading.Thread):
    def __init__(self, num):
        threading.Thread.__init__(self)
        self._run_num = num

    def run(self):
        global count, mutex
        threadname = threading.currentThread().getName()

        for x in xrange(0, int(self._run_num)):
            mutex.acquire()
            count = count + 1
            mutex.release()
            print threadname, x, count
            time.sleep(1)

if __name__ == '__main__':
    global count, mutex
    threads = []
    num = 4
    count = 1

    #create lock
    mutex = threading.Lock()

    #create thread object
    for x in xrange(0, num):
        threads.append(Test(10))

    #start thread
    for t in threads:
        t.start()
   
    #wait thread exist
    for t in threads:
        t.join()