On Oct 22, 8:11 am, "Jesse Noller" <[EMAIL PROTECTED]> wrote: > On Tue, Oct 21, 2008 at 6:45 PM, <[EMAIL PROTECTED]> wrote: > > It seems that the multiprocessing module in 2.6 is broken for *BSD; > > I've seen issue 3770 regarding this. I'm curious if there are more > > details on this issue since the posts in 3770 were a bit unclear. For > > example, one post claimed that the problem was that sem_open isn't > > implemented in *BSD, but it is available on FreeBSD 7 (I checked). I'd > > be willing to help get this working if someone could point me in the > > right direction. > > -- > >http://mail.python.org/mailman/listinfo/python-list > > The BSD issue was raised late in the cycle for 2.6. The problem is > that FBSD's support is "very experimental" as Phillip points out - and > OpenBSD doesn't even have them. > > Due to the lateness of the issue and a finite amount of time I have to > work on things, I chose to disable support for this on the various > *BSDs until I can cook up a stable patch or have one provided by > someone more familiar with the inner workings of Free-BSD. OpenBSD > support is a non-starter. > > Ideally, I would like to get this fixed and put on the 2.6 maint > branch ASAP, but I haven't had a chance to circle back to it. > > Also note Nick's comment in that bug: "Unfortunately, our OpenBSD and > FreeBSD buildbots are so unreliable that they don't get much attention > when they go red" > > Stable reliable buildbots and a few more volunteers more familiar with > BSDs might be a great and welcome addition to python-dev. > > As for getting this working - I would love a patch. You are going to > want to start with python-trunk and look in setup.py. You are going to > want to adjust the flags the package uses: > > elif platform in ('freebsd5', 'freebsd6', 'freebsd7', 'freebsd8'): > # FreeBSD's P1003.1b semaphore support is very experimental > # and has many known problems. (as of June 2008) > macros = dict( # FreeBSD > HAVE_SEM_OPEN=0, > HAVE_SEM_TIMEDWAIT=0, > HAVE_FD_TRANSFER=1, > ) > libraries = [] > > You will also need to look at: Lib/multiprocessing/synchronize.py to > disable the import error - Modules/_multiprocessing/multiprocessing.h > will need to be updated for the proper ifdefs for the bsd(s) as well. > Finally, the core of the semaphore usage is in > Modules/_multiprocessing/semaphore.c > > I apologize we/I could not get this in for 2.6 > > -jesse
This is exactly the sort of response I was hoping for. Thanks for the additional background on the problem. I'll take a look at the code and see if I can figure out a patch. I'll also read up on the buildbot issue ( I think I saw a link about that)...I might have a stable co- located FreeBSD box that could be used. -Alan -- http://mail.python.org/mailman/listinfo/python-list
