[Python-Dev] faulthandler is now part of Python 3.3

[Benjamin Peterson]

2011/3/31 Tres Seaver <tseaver at palladion.com>:
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> On 03/30/2011 09:54 PM, Victor Stinner wrote:
>> Hi,
>>
>> I pushed my faulthandler module into the default branch (Python 3.3).
>> Since one week, I fixed a lot of bugs (platform issues), improved the
>> tests and Antoine wrote a new implementation of dump_backtraces_later()
>> using a thread (instead of SIGALRM+alarm()). It should now work on all
>> platforms (but register() is not available on Windows).
>>
>> Use "python -X faulthandler" or "PYTHONFAULTHANDLER=1 python" to install
>> the fault handler at startup (catch segfaults and other fatal errors).
>>
>> You can also register a signal (e.g. SIGUSR1) to dump the traceback on
>> this signal.
>>
>> The latest added feature is to be able to the dump the traceback after a
>> timeout and exit the process: we may use it on regrtest.py to learn more
>> about test_multiprocess and test_threadsignals hangs. Issue #11393 has a
>> patch implementing this issue: add --timeout option to regrtest.py. You
>> can also just dump the traceback after the timeout without exiting.
>>
>> Py_FatalError() always print the Python traceback (except if an
>> exception was raised: print the exception with its traceback).
>>
>> For more information, read the doc:
>> http://docs.python.org/dev/library/faulthandler.html
>>
>> Please tell me if you have any issue related to faulthandler.
>>
>> --
>>
>> If you get "undefined reference to `_PyFaulthandler_Init'" compiler
>> error, copy Modules/Setup.dist to Modules/Setup (cp Modules/Setup.dist
>> Modules/Setup).
>>
>> test_faulthandler hangs on AMD64 Gentoo Wide 3.x and AMD64 OpenIndiana
>> 3.x. It looks to be related to the stack overflow test (the stack is
>> maybe not limited on these buildbots?). I have a patch, but I cannot
>> test it because these buildbots are dead (oops, sorry!).
>>
>> Most buildbots are red because a regression in test_logging (since 2
>> days): I disabled temporary the test (issue #11557), I hope that the
>> situation will be better in a few hours.
>>
>> Thank you Antoine for your reviews!
>
> Thanks very much for you hard work on this cool new feature.

Furthermore, let's hope we don't have to use it much! :)



-- 
Regards,
Benjamin