Re: [pygtk] PyGTK+Thread problem (program freezes)
On Thu, Aug 07, 2003 at 09:22:45AM -0700, [EMAIL PROTECTED] wrote: We were working with Red Hat 8 and 9. We noticed that PyGTK on Red Hat 8 (pygtk2-1.99.12) has threads turned off. Red Hat 9 does NOT have it turned off. We wondered if this was because it is common knowledge PyGTK threads were unstable until recently. That's quite true. A lot of good work went in very recently (I see a number of people with their hands raised, and yeah, a lot of the code and testing was contributed -- thanks folks) Even in Red Hat 9 we tried using idle/timeout handlers and moving all PyGTK commands to main thread/process but it still had problems. But I surmise it was better than with RH8's version? We finally gave up assuming PyGTK thread support was not that mature yet. This does not mean Python threads or GTK+ are not mature technologies but just the glue (PyGTK threads support) that seems immature. Well, in fact there's some pretty complicated interaction between Python threading support (and the Python GIL) and threading in C modules. PyGTK is on the more complex end of the problem, but I do believe the recently released version (1.99.17) is much better. I could be wrong but that was where we left the project. We moved to PyGTK with forks and execs and now all is stable after abandoning threads. Sounds good enough. If you have the time, give 1.99.17 (or CVS HEAD, which is even better) a spin and let us know if it worked out. Take care, -- Christian Reis, Senior Engineer, Async Open Source, Brazil. http://async.com.br/~kiko/ | [+55 16] 261 2331 | NMFL ___ pygtk mailing list [EMAIL PROTECTED] http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
RE: [pygtk] PyGTK+Thread problem (program freezes)
On Thu, 2003-08-07 at 12:22, [EMAIL PROTECTED] wrote: I verified this by trying to write a PyGTK GUI in Red Hat 8 myself and it would freeze until I removed the GUI stuff. The threading implementation that comes stock with Red Hat 8 has issues, and threaded apps seem to hang pretty regularly with it. Red Hat issued an errata to fix it, and with our threaded app we require the glibc errata as a packaging dependency to avoid the problems. As far as the rest of your email goes, the threading support in pygtk has come a long way since 1.99.14 or .15. I haven't seen any problems with it in a long while, and our app is a fairly complex threaded one (about 15k lines of python, another 1500 lines of C). Joe ___ pygtk mailing list [EMAIL PROTECTED] http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
RE: [pygtk] PyGTK+Thread problem (program freezes)
Christian Thanks for the email. (We have the same 1st name!).. We were working with Red Hat 8 and 9. We noticed that PyGTK on Red Hat 8 (pygtk2-1.99.12) has threads turned off. Red Hat 9 does NOT have it turned off. We wondered if this was because it is common knowledge PyGTK threads were unstable until recently. I verified this by trying to write a PyGTK GUI in Red Hat 8 myself and it would freeze until I removed the GUI stuff. Even in Red Hat 9 we tried using idle/timeout handlers and moving all PyGTK commands to main thread/process but it still had problems. We finally gave up assuming PyGTK thread support was not that mature yet. This does not mean Python threads or GTK+ are not mature technologies but just the glue (PyGTK threads support) that seems immature. I could be wrong but that was where we left the project. We moved to PyGTK with forks and execs and now all is stable after abandoning threads. Chris Original Message Subject: Re: [pygtk] PyGTK+Thread problem (program freezes) From: Christian Reis [EMAIL PROTECTED] Date: Wed, August 06, 2003 7:18 pm To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] On Thu, Jul 31, 2003 at 03:50:03PM -0700, [EMAIL PROTECTED] wrote: It would seem that the problem are with these two commands but we cannot seem to find the problem. As you know, threads are not the easiest things to debug. We are wondering if Python threads are unstable. Are they?? What version of PyGTK is this? Recent threading fixes have improved the threading situation a *lot*, but there might be some leftovers.. Take care, -- Christian Reis, Senior Engineer, Async Open Source, Brazil. http://async.com.br/~kiko/ | [+55 16] 261 2331 | NMFL ___ pygtk mailing list [EMAIL PROTECTED] http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
Re: [pygtk] PyGTK+Thread problem (program freezes)
On Thu, Jul 31, 2003 at 03:50:03PM -0700, [EMAIL PROTECTED] wrote: It would seem that the problem are with these two commands but we cannot seem to find the problem. As you know, threads are not the easiest things to debug. We are wondering if Python threads are unstable. Are they?? What version of PyGTK is this? Recent threading fixes have improved the threading situation a *lot*, but there might be some leftovers.. Take care, -- Christian Reis, Senior Engineer, Async Open Source, Brazil. http://async.com.br/~kiko/ | [+55 16] 261 2331 | NMFL ___ pygtk mailing list [EMAIL PROTECTED] http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
