__author__ = 'mare' from multiprocessing import Process, Lock, Value import time def run(name, l, c): print( name, 'process is created.') fixed = 0 while 1: l.acquire() if c.value>0: c.value -= 1 l.release() fixed += 1 time.sleep(0.1) else: l.release() print(name, 'fixed', fixed, 'defects') break if __name__=='__main__': lock = Lock() count = Value('i', 10) dev_list = [] for name in ['Mare1', 'Mare2', 'Mare3']: dev = Process( target=run, args=(name, lock, count)) dev_list.append(dev) dev.start() for dev in dev_list: dev.join() print('All processes are finished.') #out put is.. """ Mare1 process is created. Mare2 process is created. Mare3 process is created. Mare2 fixed 3 defects Mare3 fixed 3 defects Mare1 fixed 4 defects All processes are finished. All processes are finished. All processes are finished. """
3/18/2014
Python Study, multiprocessing example source code
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