[Stackless] non-blocking IO in uthreads
Bernd Rinn
Bernd.Rinn at epost.de
Fri Feb 9 16:36:12 CET 2001
Hi everyone,
since I have just started with stackless-python and microthreads, my
questions are pretty basic:
* I there a module for doing non-blocking IO in uthreads?
* If not, do you know a better way to do it than the following:
def nbselect(iwtd, owtd, ewtd, timeout=-1):
from select import select
from time import time
dt = 0.005
tmax = time() + timeout
r,w,e = select(iwtd, owtd, ewtd, dt)
while timeout < 0 or time() < tmax:
r,w,e = select(iwtd, owtd, ewtd, dt)
if r or w or e: break
return r,w,e
* If the above is the way to go: What should I use for 'dt'? The above
version eats about 2-3% of the CPU of a PentiumIII-700Mhz (which is
a lot for a select() operation in my opinion).
Any comment is appreciated, thanks in advance.
Best regards,
Bernd
P.S.: Please CC answers to Bernd.Rinn at uni-konstanz.de, since I am not
subscribed to the list.
--
Bernd Rinn
Fakultät für Physik
Universität Konstanz
Tel. 07531/88-3812,
e-mail: Bernd.Rinn at uni-konstanz.de
PGP-Fingerprint: 1F AC 31 64 FF EF A9 67 6E 0D 4C 26 0B E7 ED 5C
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