Thanks Curt. I've filed a bug report. It makes me a bit nervous realizing that it isn't entirely transparent when shared memory/objects are being used. Normally I would think a local instance of hashlib.md5() would be thread-safe from other local instances. Is there any documentation of what other modules use global/static instances or other non-thread-safe implementations in IronPython?
On Tue, Dec 30, 2008 at 12:13 PM, Curt Hagenlocher <c...@hagenlocher.org>wrote: > I'm going to guess that this is because we use a static instance > of MD5CryptoServiceProvider to do the hashing, something which may not be > thread-safe. It looks like all of the IronPython crypto implementations do > the same thing, so the SHA functions may have a similar issue. > Please file this as a bug on Codeplex. > > On Sat, Dec 20, 2008 at 1:56 PM, Brian Merrell <br...@merrells.org> wrote: > >> I get the following error periodically: >> >> Exception in thread Thread-2: >> Traceback (most recent call last): >> File "C:\Program Files\IronPython 2.0\Lib\threading.py", line 486, in >> _Thread__bootstrap_inner >> self.run() >> File "initial_ingest.py", line 33, in run >> md5 = hashlib.md5(contents).hexdigest() >> SystemError: Hash not valid for use in specified state. >> >> I am not sharing a md5() object between threads and have tried to avoid >> any shared memory issues: >> >> >> class Convert(threading.Thread): >> def __init__(self, queue): >> threading.Thread.__init__(self) >> self.queue = queue >> def run(self): >> import hashlib >> while True: >> abs_filename = self.queue.get() >> f = open(abs_filename, "rb") >> contents = f.read() >> f.close() >> md5 = hashlib.md5(contents).hexdigest() >> print md5, abs_filename >> self.queue.task_done() >> >> Any ideas why this is failing? Thanks, >> >> -brian >> >> _______________________________________________ >> Users mailing list >> Users@lists.ironpython.com >> http://lists.ironpython.com/listinfo.cgi/users-ironpython.com >> >> > > _______________________________________________ > Users mailing list > Users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > >
_______________________________________________ Users mailing list Users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
