The corrected code does not crash, but it leaks like sieve (0-3MB/s for me)... And if you try to call smart_purge() after pop_context() it segfaults.
On Wed, Sep 28, 2011 at 10:22 PM, Thomas Paviot <tpav...@gmail.com> wrote: > 2011/9/28 István Csanády <istvancsan...@gmail.com> > >> Hi Thomas, >> >> On Wed, Sep 28, 2011 at 9:19 PM, Thomas Paviot <tpav...@gmail.com> wrote: >> >>> Hi Istvan, >>> >>> Not yet. Trying to run your example actually helped me to figure out/fix >>> a serious regression in the current pythonocc master branch. There is still >>> another bug to fix. I'm currently running pythonocc master ( >>> https://github.com/tpaviot/pythonocc)/OCE-0.6.0-rc3. >> >> >> >>> Do you run pythonocc-0.5/OCC630? >>> >> >> Yes. >> >> So you say that my code does not crash for you? If I remember correctly >> you are a Mac user to, aren't you? Are you using 10.6.7 too with Python >> 2.6.1 ? May I try to recompile pythonocc with OCE? Can it fix this error? >> This bug is incredibly hard to track down since the python debugger does not >> stop when the C++ code crashes... Do you use any special tools to debug such >> errors when developing pythonocc? >> > > I didn't say it crashes, I was running the test. > > It's done now, I can reproduce the crash, the program segfaults after a few > loops are performed (I run OSX 10.6.8). I can't explain so far what happens, > I need to dive into the example (make it even simpler) and check what's > going on. > > I also suggest you use garbage.push_context() and pop_context(): only > objects created between push/pop will be killed by the smart_purge method. > The corrected program attached works properly. > > > >> >> István >> > > Thomas > > > >> >> >> >> >>> >>> All the best, >>> >>> Thomas >>> >>> >>> 2011/9/28 István Csanády <istvancsan...@gmail.com> >>> >>>> Hi Thomas, >>>> >>>> Have you managed to reproduce the error? I've been trying to track down >>>> the bug with valgrind - without any success... Probably I should recompile >>>> python with the debug and --without-pymalloc flags to make valgrind work >>>> with it. I am using Mac OS X 10.6.7. >>>> >>>> István >>>> >>>> On Wed, Sep 28, 2011 at 11:21 AM, Thomas Paviot <tpav...@gmail.com>wrote: >>>> >>>>> 2011/9/27 István Csanády <istvancsan...@gmail.com> >>>>> >>>>>> Hi, >>>>>> >>>>> >>>>> Hi Istvan, >>>>> >>>>> >>>>>> >>>>>> Last time when I wrote about this bug I thought it was caused by some >>>>>> numpy buffer overflow. Unfortunately it was not. Finally I managed to >>>>>> create >>>>>> some code that can reproduce this bug. I have attached the code and some >>>>>> crash logs. >>>>> >>>>> >>>>> I've been trying to reproduce the issue. >>>>> >>>>> >>>>>> I think the problem is probably with OCC's Standard_MMgrOpt class >>>>>> memory recycling for small blocks (Is it possible that smart_purge frees >>>>>> memory that Standard_MMgrOpt want to reuse?). >>>>> >>>>> >>>>> No. >>>>> >>>>> >>>>>> Note that sometimes it takes a long time until the error occurs, but >>>>>> usually after the 50th-100th iteration the code crashes for me. (The >>>>>> code is >>>>>> totally pointless, I have removed every unneccessary parts) >>>>>> >>>>>> István >>>>>> >>>>> >>>>> Thomas >>>>> >>>>> >>>>> _______________________________________________ >>>>> Pythonocc-users mailing list >>>>> Pythonocc-users@gna.org >>>>> https://mail.gna.org/listinfo/pythonocc-users >>>>> >>>>> >>>> >>>> _______________________________________________ >>>> Pythonocc-users mailing list >>>> Pythonocc-users@gna.org >>>> https://mail.gna.org/listinfo/pythonocc-users >>>> >>>> >>> >>> _______________________________________________ >>> Pythonocc-users mailing list >>> Pythonocc-users@gna.org >>> https://mail.gna.org/listinfo/pythonocc-users >>> >>> >> >> _______________________________________________ >> Pythonocc-users mailing list >> Pythonocc-users@gna.org >> https://mail.gna.org/listinfo/pythonocc-users >> >> > > _______________________________________________ > Pythonocc-users mailing list > Pythonocc-users@gna.org > https://mail.gna.org/listinfo/pythonocc-users > >
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