问信号是由孩子处理的，而不是由父进程处理的？

EN

import sys
import multiprocessing
import signal

# ignoring handler, signal.SIG_IGN is not working on windows
def sighandler(signal, frame):
    pass    

# worker thread definiton
def worker():
    signal.signal(signal.SIGINT, sighandler)
    signal.signal(signal.SIGTERM, sighandler)

    # do stuff here...

def main():
    num_procs = 4
    procs = []
    print("Starting up %d processes:" %num_procs)
    for i in range(num_procs):
        print("\tstarting worker %d..." %(i+1))
        p = multiprocessing.Process(target=worker)
        procs.append(p)
        p.start()

    print("All processes started...")
    try:
        for p in procs:
            p.join()
    except KeyboardInterrupt as e:
        print "STOPPING"

        for p in procs:
            p.terminate()

        sys.exit(0)