Not sure if this is the right mailing list for this....
epoll should *not* be used on 2.4 kernels...
I have 2.4 kernel running on a 32-bit x86 machine and another 2.4
kernel running on 64-bit x64 and I'm having an issue with twisted (via
buildbot).
I can import epoll from select on the 64-bit machine (it *should* fail
but doesn't) and this later causes twisted to fail...
>>> from select import epoll
>>> epoll(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IOError: [Errno 38] Function not implemented
On the 32-bit machine, however, importing epoll is properly failing...
>>> from select import epoll
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: cannot import name epoll
>>>
twisted/internet/default.py is hitting this same problem. It's
incorrectly picking epoll when it shouldn’t because import epoll is
working when it shouldn't.
I 'fixed' the problem on my machine by adding a check method in
epollreactor.py which does this...
def check():
try:
epoll(1)
except IOError:
return False
return True
and I import and call the check method in default.py.
An alternate fix can be...
in twisted/internet/default.py
try:
if platform.isLinux():
try:
from select import epoll
epoll(1)
from twisted.internet.epollreactor import install
except (IOError, ImportError):
from twisted.internet.pollreactor import install
Any insight would be good. I had to compile my own Python 2.7.8 on
these old computers...maybe python is incorrectly detecting epoll in
the build process?
Thanks in advance,
Reuben
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