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https://issues.apache.org/jira/browse/MODPYTHON-90?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Graham Dumpleton closed MODPYTHON-90.
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This issue may have to be revisited as using -X option has same effect as
running -DONE_PROCESS -DNO_DETACH and would also allow debugging, but no
ONE_PROCESS option is set that can be checked for. You might even be able to
use -DDEBUG as well. Thus, at the moment, one has to redundantly add
-DONE_PROCESS to the -X option for this code change to work. No one has
complained yet though which suggests no one really uses it.
> Explicitly don't allow Pdb support to work if not ONE_PROCESS mode.
> -------------------------------------------------------------------
>
> Key: MODPYTHON-90
> URL: https://issues.apache.org/jira/browse/MODPYTHON-90
> Project: mod_python
> Issue Type: Improvement
> Components: core
> Affects Versions: 3.3
> Reporter: Graham Dumpleton
> Assigned To: Graham Dumpleton
> Priority: Minor
> Fix For: 3.3
>
>
> mod_python provides the PythonEnablePdb option for enabling of the Python
> debugger. For it to work properly though, it is necessary to start httpd from
> the command line with the -DONE_PROCESS option. If one doesn't do this though
> and enables PythonEnablePdb when Apache is running normally, any request to a
> URL for which the debugger is enabled will yield a 500 error. The details of
> the 500 error will be:
> Mod_python error: "PythonHandler mptest"
> Traceback (most recent call last):
> File
> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/apache.py",
> line 313, in HandlerDispatch
> assert (type(result) == type(int())), \
> AssertionError: Handler 'mptest' returned invalid return code.
> This error message isn't particularly helpful in understanding that the
> problem is that the debugger can't be run in this mode.
> To avoid this problem at the moment, all that can be done is for the user to
> know that their Apache configuration should actually say:
> <IfDefine ONE_PROCESS>
> PythonEnablePdb On
> </IfDefine>
> This would mean they could leave the Apache configuration set the one way and
> not have to worry.
> What could instead be done in mod_python though is simply to ignore the
> PythonEnablePdb option and that it is set if Apache hasn't been run in
> ONE_PROCESS mode. Thus, presuming that MODPYTHON-89 has been implemented, the
> mod_python code in mod_python.apache in the number of places where it occurs,
> could say:
> # call the object
> if exists_config_define("ONE_PROCESS") and
> config.has_key("PythonEnablePdb"):
> result = pdb.runcall(object, conn)
> else:
> result = object(conn)
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