I agree, that flag was probably last useful when we were debugging the threading machinery itself. (Evidenced by it only working on --with-pydebug, which is for when you're debugging CPython itself, not any user apps.)
On Wed, Jul 7, 2021 at 9:33 AM Gregory P. Smith <g...@krypto.org> wrote: > > > On Wed, Jul 7, 2021 at 2:28 AM Victor Stinner <vstin...@python.org> wrote: > >> Hi, >> >> Does anyone use threading debug PYTHONTHREADDEBUG=1 env var on a >> Python debug build? If not, can I just remove it? >> >> -- >> >> To fix a race condition at thread exit on Linux using the glibc, I >> removed calls to pthread_exit() (PyThread_exit_thread()) in the >> _thread module: >> >> https://bugs.python.org/issue44434 >> >> A side effect of this change is the removal of the >> "PyThread_exit_thread called" threading debug log when using >> PYTHONTHREADDEBUG=1 environment variable. >> >> I never used PYTHONTHREADDEBUG. I just tried it and it produces tons >> of output in stdout about locks. It looks basically useless because it >> produces way too many logs, and it pollutes stdout (ex: most Python >> tests fail when it's enabled). >> >> This debug mode requires to build Python in debug mode (./configure >> --with-pydebug): >> >> https://docs.python.org/dev/using/configure.html#python-debug-build >> >> IMO there are enough external debugging tools to debug threading >> issues. Python no longer has to come with its built-in logs. >> >> I propose to deprecate the feature in Python 3.11 and remove it in 2 >> releases (Python 3.13). >> > > I agree with its removal. > > >> Victor >> -- >> Night gathers, and now my watch begins. It shall not end until my death. >> _______________________________________________ >> Python-Dev mailing list -- python-dev@python.org >> To unsubscribe send an email to python-dev-le...@python.org >> https://mail.python.org/mailman3/lists/python-dev.python.org/ >> Message archived at >> https://mail.python.org/archives/list/python-dev@python.org/message/NMLGCDRUKLZSTK4UICJTKR54WRXU2ZGJ/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@python.org > https://mail.python.org/mailman3/lists/python-dev.python.org/ > Message archived at > https://mail.python.org/archives/list/python-dev@python.org/message/F3MFU5YD6H6NIPW5ULIRNGAMSPSWXYPN/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
_______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/GILHYQXRMN4EQ4YDVRMX4Z7QLFLC2O53/ Code of Conduct: http://python.org/psf/codeofconduct/
