Traceback of hanged process

[Hynek Hanke]

Hello,

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.

Unfortunatelly, googling and reading documentation revealed nothing, so
please excuse if this question is dumb.

Thank you,
Hynek Hanke

 

[Gabriel Genellina]

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.

On Windows, Pythonwin has an option "Break into running code".
Try starting the script with python -i, and send it a signal..

 

[Klaas]

Hello,

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.

Unfortunatelly, googling and reading documentation revealed nothing, so
please excuse if this question is dumb.

In python2.5, you can run a background thread that listens on a port or
unix socket, and prints a formatted version of sys._current_frames() to
stderr.

-Mike

 

[Mike C. Fletcher]

....
In python2.5, you can run a background thread that listens on a port or
unix socket, and prints a formatted version of sys._current_frames() to
stderr.

You can also use the signal module to similar effect. Works well in
Twisted, at least:

http://blog.vrplumber.com/835

HTH,
Mike

--
________________________________________________
Mike C. Fletcher
Designer, VR Plumber, Coder
http://www.vrplumber.com
http://blog.vrplumber.com