from multiprocessing import Process, Pool,Lock
import os, time
lock = Lock()
r = []
def run_proc(name):
for i in range(5):
lock.acquire()
time.sleep(0.2)
print 'Run child process %s (%s)'% (name, os.getpid())
lock.release()
r.append('1')
print r
# run_proc('tesst')
if __name__ == '__main__':
# run_proc('test')
print 'Run the main process (%s). '% (os.getpid())
mainStart = time.time()
p = Pool(4)
print p.__sizeof__()
for i in range(16):
p.apply_async(run_proc,args=('Process'+str(i),))
print p.__sizeof__()
print 'Waiting for all subprocesses done...'
p.close()
p.join()
print 'All subprocesses done'
mainEnd = time.time()
print 'All process ran %0.2f seonds.'%(mainEnd-mainStart)
