python 之 多线程、多进程代码

thread-多线程

multiprocessing-多进程

 #!/usr/bin/python
 # -*- coding:utf-8 -*-
 import os
 import threading
 import multiprocessing
 count_thread = 0
 count_process = 0

 # worker function
 def worker1(sign, lock):
     global count_thread
     lock.acquire()
     count_thread += 1
     print(sign, os.getpid())
     lock.release()

 def worker2(sign, lock):
     global count_process
     lock.acquire()
     count_process += 1
     print(sign, os.getpid())
     lock.release()
 # Main
 print('Main:',os.getpid())

 # Multi-thread
 record = []
 lock  = threading.Lock()
 for i in range(5):
     thread = threading.Thread(target=worker1,args=('thread',lock))
     thread.start()
     record.append(thread)

 for thread in record:
     thread.join()

 # Multi-process
 record = []
 lock = multiprocessing.Lock()
 for i in range(5):
     process = multiprocessing.Process(target=worker2,args=('process',lock))
     process.start()
     record.append(process)

 for process in record:
     process.join()

 print count_thread
 print count_process