fork - Forking and exiting from child in python -

fork - Forking and exiting from child in python -

i'm trying fork process, in kid , exit (see code below). exit first tried sys.exit turned out problem because intermediate function caught systemexit exception (as in code below) , kid didn't terminate. figured out should utilize os._exit instead. kid terminates, still see defunct processes lying around (when ps -ef). there way avoid these?

import os, sys def fctn(): if os.fork() != 0: homecoming 0 # sys.exit(0) os._exit(0) while true: str = raw_input() try: print(fctn()) except systemexit: print('caught systemexit.')

edit: not python question more of unix question (so guess results may vary depending on system). ivan's reply suggests should like

def handlesigchld(sig, frame): os.wait() signal.signal(signal.sigchld, handlesigchld)

while me simple

signal.signal(signal.sigchld, signal.sig_ign)

also works.

and it's true should utilize library...

you should wait() kid remove zombie process entry table.

finally, offload tasks children, may improve off multiprocessing.

python fork system exit