[Python.NET] Problems using Python.net in a TurboGears App onubuntu/mono
John Burnett
JBurnett at blizzard.com
Tue Apr 1 19:29:23 CEST 2008
If you're not already doing this, you *might* want to grab the source from the svn repository and make your own build, as opposed to using the source/binaries available in the zip download. There's a fair amount of change in the repo now... not sure if it'll help though.
Probably not :)
-----Original Message-----
From: pythondotnet-bounces at python.org [mailto:pythondotnet-bounces at python.org] On Behalf Of Ulrich Eck
Sent: Tuesday, April 01, 2008 6:19 AM
To: pythondotnet at python.org
Subject: [Python.NET] Problems using Python.net in a TurboGears App onubuntu/mono
Hi all,
i'm trying to use the C#-Library iTextSharp within a TurboGears
Application.
the most convenient way would be, to use pythonnet to access the
needed methods of the c#-library.
but .. i get a Segfault when trying to use clr imports:
executed with: "mono python.exe start-netdemo.py"
--------------------------
#!/usr/bin/python
# -*- coding: utf-8 -*-
"""Start script for the netdemo TurboGears project.
This script is only needed during development for running from the
project
directory. When the project is installed, easy_install will create a
proper start script.
"""
import clr
import System
import sys
from netdemo.commands import start, ConfigurationError
if __name__ == "__main__":
try:
start()
except ConfigurationError, exc:
sys.stderr.write(str(exc))
sys.exit(1)
---------------
the following traceback is produced - can anyone suggest, how to debug
or find a solution - my expectation is, that there is some trouble
with threading, but this is just guessing. pythonnet basically works,
i can import from iTextSharp using the interpreter-cli.
-----------------
root at wwdev:/data/develop/test/netdemo# mono python.exe start-netdemo.py
Stacktrace:
at (wrapper managed-to-native)
Python.Runtime.Runtime.PyInt_FromLong (intptr) <0x00004>
at (wrapper managed-to-native)
Python.Runtime.Runtime.PyInt_FromLong (intptr) <0xffffffff>
at Python.Runtime.Runtime.PyInt_FromInt32 (int) <0x0002f>
at Python.Runtime.Runtime.Initialize () <0x00234>
at Python.Runtime.PythonEngine.Initialize () <0x0002f>
at (wrapper runtime-invoke) System.Object.runtime_invoke_void
(object,intptr,intptr,intptr) <0xffffffff>
Native stacktrace:
/usr/lib/libmono.so.0 [0xb7b096c6]
/usr/lib/libmono.so.0 [0xb7adbe96]
[0xffffe440]
[0xb6f69681]
[0xb6f69630]
[0xb71e267d]
[0xb71dc790]
[0xb71dc6f0]
/usr/lib/libmono.so.0 [0xb7adbcc6]
/usr/lib/libmono.so.0(mono_runtime_invoke+0x33) [0xb7b6f88e]
/usr/lib/python2.5/site-packages/clr.so(main_thread_handler
+0xc6) [0xb7cbde16]
/usr/lib/python2.5/site-packages/clr.so(PyNet_Init+0x7f)
[0xb7cbdf7f]
/usr/lib/python2.5/site-packages/clr.so(initclr+0x76)
[0xb7cbdc46]
/usr/bin/python(_PyImport_LoadDynamicModule+0xa4) [0x80e1a34]
/usr/bin/python [0x80df6d5]
/usr/bin/python [0x80df98b]
/usr/bin/python [0x80dfe3e]
/usr/bin/python [0x80e0068]
/usr/bin/python(PyImport_ImportModuleLevel+0x27) [0x80e04f7]
/usr/bin/python [0x80c1db4]
/usr/bin/python(PyObject_Call+0x27) [0x805c9e7]
/usr/bin/python(PyEval_CallObjectWithKeywords+0x6c) [0x80c232c]
/usr/bin/python(PyEval_EvalFrameEx+0x18bd) [0x80c4a9d]
/usr/bin/python(PyEval_EvalCodeEx+0x775) [0x80ca115]
/usr/bin/python(PyEval_EvalCode+0x57) [0x80ca187]
/usr/bin/python(PyRun_FileExFlags+0xf8) [0x80e9698]
/usr/bin/python(PyRun_SimpleFileExFlags+0x187) [0x80e9927]
/usr/bin/python(Py_Main+0x9c0) [0x8059390]
/usr/bin/python(main+0x22) [0x80588c2]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)
[0xb7d9f050]
/usr/bin/python [0x8058831]
Debug info from gdb:
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1210545984 (LWP 8343)]
[New Thread -1222792304 (LWP 8345)]
[New Thread -1222710384 (LWP 8344)]
0xffffe410 in __kernel_vsyscall ()
3 Thread -1222710384 (LWP 8344) 0xffffe410 in __kernel_vsyscall ()
2 Thread -1222792304 (LWP 8345) 0xffffe410 in __kernel_vsyscall ()
1 Thread -1210545984 (LWP 8343) 0xffffe410 in __kernel_vsyscall ()
Thread 3 (Thread -1222710384 (LWP 8344)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7f0d9f6 in ?? () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7bec7db in ?? () from /usr/lib/libmono.so.0
#3 0xb71ee3cc in ?? ()
#4 0x00000000 in ?? ()
Thread 2 (Thread -1222792304 (LWP 8345)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7f0a676 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7bf191e in ?? () from /usr/lib/libmono.so.0
#3 0xb76c81dc in ?? ()
#4 0xb76c81c4 in ?? ()
#5 0xb7f08541 in pthread_mutex_lock () from /lib/tls/i686/cmov/
libpthread.so.0
#6 0xb7bf1c2b in ?? () from /usr/lib/libmono.so.0
#7 0xb76c81dc in ?? ()
#8 0xb76c81c4 in ?? ()
#9 0x00000000 in ?? ()
Thread 1 (Thread -1210545984 (LWP 8343)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7e552a1 in select () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7a36780 in g_spawn_sync () from /usr/lib/libglib-2.0.so.0
#3 0xb7a36b4c in g_spawn_command_line_sync () from /usr/lib/
libglib-2.0.so.0
#4 0xb7b097ad in ?? () from /usr/lib/libmono.so.0
#5 0xb797f840 in ?? ()
#6 0xb797f828 in ?? ()
#7 0xb797f824 in ?? ()
#8 0xb797f820 in ?? ()
#9 0x00000000 in ?? ()
#0 0xffffe410 in __kernel_vsyscall ()
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
2008-04-01 15:10:11,740 cherrypy.msg INFO ENGINE: SystemExit raised:
shutting down autoreloader
2008-04-01 15:10:11,741 cherrypy.msg INFO HTTP: HTTP Server shut down
2008-04-01 15:10:11,746 cherrypy.msg INFO ENGINE: CherryPy shut down
-----------------
Do i need to do special things (like pythoncom->CoInitialize) when
using pythonnet in a multithreaded environment ?
thanks for all your hints - i'ld try to avoid using python and
ironpython together with pyro ;-) or worse, code the itext-stuff in c#
and
call it from the cmd-line ;-)
cheers Ulrich
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