[Twisted-Python] signalfd
Neal Becker
ndbecker2 at gmail.com
Wed Nov 3 19:45:39 MDT 2010
On modern linux, signalfd can be used to convert sigchld into an event on a
file descriptor. Looks like just what is wanted for processProtocol.
There is also a python interface here:
https://launchpad.net/python-signalfd/+download
This test seems to work for me:
import signalfd
import signal
import subprocess
import select
signalfd.sigprocmask (signalfd.SIG_BLOCK, [signal.SIGCHLD])
fd = signalfd.signalfd (-1, [signal.SIGCHLD])
child = subprocess.Popen (['sleep', '5'])
while True:
a,b,c, = select.select ([fd], [], [])
print 'a:', a, 'b:', b, 'c:', c
if child.poll() != None:
break
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