Hmm.. i googled and it is seems PyImport_ImportModule should be called with gil acquired. (no sure) I'll check on Monday if it fixes problem. Does get_uwsgi_pydict (from uwsgi_uwsgi_loader) get called with gil acquired?
2012/7/27 Evgeny Turnaev <[email protected]>: > *but/bug typo > > 2012/7/27 Evgeny Turnaev <[email protected]>: >> Roberto, >> As i have poor experience using python api could you please confirm >> that this is a python but that this code segfaults >> >> ==== main.c ==== >> >> #include <Python.h> >> #include <stdio.h> >> >> int main(){ >> >> printf("hello\n"); >> Py_Initialize(); >> PyThreadState *main_thread = PyThreadState_Get(); >> printf("Main thread: %p\n", main_thread); >> >> PyObject * wsgi_module = PyImport_ImportModule("logging.config"); >> if(! wsgi_module){ >> printf("!wsgi_module\n"); >> return 0; >> } >> PyObject * wsgi_dict = PyModule_GetDict(wsgi_module); >> if(!wsgi_dict){ >> printf("wsgi_dict\n"); >> return 0; >> } >> printf("wsgi_dict!\n"); >> PyObject * application = PyDict_GetItemString(wsgi_dict, "application"); >> printf("application: %p\n", (void *)application); >> >> return 0; >> } >> >> ============ end main.c ============ >> >> gcc ./main.c -o import_test -L/usr/lib/python2.7/config -lpython2.7 >> -I/usr/include/python2.7/ >> >> Output >> turnaev@nostromo:~/box/trunk/frontend_new/src$ ./import_test >> hello >> Main thread: 0x1d3c0a0 >> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >> Segmentation fault (core dumped) >> >> >> 2012/7/27 Evgeny Turnaev <[email protected]>: >>> Update. This is not gc stuff. I disabled gc and >>> segfault is still reproducible in import _socket line of socket.py >>> >>> 2012/7/27 Evgeny Turnaev <[email protected]>: >>>> No traceback :( >>>> Pretty strage as i remember uwsgi sets signal handler for sigsegv. >>>> Is there a way to manually provide traceback? >>>> >>>> Further investigation shows segfault happens in >>>> >>>> import _socket line in socket.py of python stdlib >>>> (socket.py imported in logging) >>>> Also i enabled gc.debug and it is seems gc is sollecting something before >>>> segfault so think there is a pointer somethere to collected object and >>>> someone is accessing it. >>>> >>>> Fri Jul 27 17:29:12 2012 - *** Operational MODE: preforking *** >>>> gc: collecting generation 0... >>>> gc: objects in each generation: 845 3122 0 >>>> gc: done, 0.0004s elapsed. >>>> gc: collecting generation 0... >>>> gc: objects in each generation: 789 3527 0 >>>> gc: done, 0.0003s elapsed. >>>> gc: collecting generation 0... >>>> gc: objects in each generation: 891 3809 0 >>>> gc: done, 0.0006s elapsed. >>>> before import _socket >>>> Fri Jul 27 17:29:12 2012 - !!! uWSGI process 12119 got Segmentation Fault >>>> !!! >>>> >>>> The strange thing also is that import logging.config works ok in >>>> python interactive shell and when run as script. >>>> >>>> 2012/7/27 Roberto De Ioris <[email protected]>: >>>>> >>>>> Il giorno 27/lug/2012, alle ore 14:57, Evgeny Turnaev ha scritto: >>>>> >>>>>> Hello. >>>>>> I experience segmentation fault with a very simple setup. >>>>>> >>>>>> I do: >>>>>> sudo uwsgi -s /var/run/uwsgi_hypernova.sock -M -p 3 -w app >>>>>> >>>>>> *** Starting uWSGI 1.3-dev-2470 (64bit) on [Fri Jul 27 16:51:36 2012] *** >>>>>> compiled with version: 4.6.3 on 27 July 2012 16:39:02 >>>>>> os: Linux-3.2.0-27-generic #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012 >>>>>> nodename: nostromo >>>>>> machine: x86_64 >>>>>> detected number of CPU cores: 2 >>>>>> current working directory: /home/turnaev/box/trunk/frontend_new/src >>>>>> detected binary path: /usr/local/bin/uwsgi >>>>>> uWSGI running as root, you can use --uid/--gid/--chroot options >>>>>> *** WARNING: you are running uWSGI as root !!! (use the --uid flag) *** >>>>>> your memory page size is 4096 bytes >>>>>> detected max file descriptor number: 1024 >>>>>> lock engine: pthread robust mutexes >>>>>> uwsgi socket 0 bound to UNIX address /var/run/uwsgi_hypernova.sock fd 3 >>>>>> Python version: 2.7.3 (default, Apr 20 2012, 23:04:22) [GCC 4.6.3] >>>>>> *** Python threads support is disabled. You can enable it with >>>>>> --enable-threads *** >>>>>> Python main interpreter initialized at 0x1e9f900 >>>>>> your server socket listen backlog is limited to 100 connections >>>>>> *** Operational MODE: preforking *** >>>>>> !!! uWSGI process 11162 got Segmentation Fault !!! >>>>> >>>>> no c traceback after that line ? >>>>> >>>>> >>>>> -- >>>>> Roberto De Ioris >>>>> http://unbit.it >>>>> JID: [email protected] >>>>> >>>>> _______________________________________________ >>>>> uWSGI mailing list >>>>> [email protected] >>>>> http://lists.unbit.it/cgi-bin/mailman/listinfo/uwsgi >>>> >>>> >>>> >>>> -- >>>> -------------------------------------------- >>>> Турнаев Евгений Викторович >>>> +7 906 875 09 43 >>>> -------------------------------------------- >>> >>> >>> >>> -- >>> -------------------------------------------- >>> Турнаев Евгений Викторович >>> +7 906 875 09 43 >>> -------------------------------------------- >> >> >> >> -- >> -------------------------------------------- >> Турнаев Евгений Викторович >> +7 906 875 09 43 >> -------------------------------------------- > > > > -- > -------------------------------------------- > Турнаев Евгений Викторович > +7 906 875 09 43 > -------------------------------------------- -- -------------------------------------------- Турнаев Евгений Викторович +7 906 875 09 43 -------------------------------------------- _______________________________________________ uWSGI mailing list [email protected] http://lists.unbit.it/cgi-bin/mailman/listinfo/uwsgi
