#  编程之家  (jb51.cc) 
import multiprocessing
import time
def worker_1(interval):
    print "worker_1"
    time.sleep(interval)
    print "end worker_1"
def worker_2(interval):
    print "worker_2"
    time.sleep(interval)
    print "end worker_2"
def worker_3(interval):
    print "worker_3"
    time.sleep(interval)
    print "end worker_3"
if __name__ == "__main__":
    p1 = multiprocessing.Process(target = worker_1,args = (2,))
    p2 = multiprocessing.Process(target = worker_2,args = (3,))
    p3 = multiprocessing.Process(target = worker_3,args = (4,))
    p1.start()
    p2.start()
    p3.start()
    print("The number of cpu is:" + str(multiprocessing.cpu_count()))
    for p in multiprocessing.active_children():
        print("child   p.name:" + p.name + "\tp.id" + str(p.pid))
    print "END!!!!!!!!!!!!!!!!!"