STINNER Victor added the comment: As you noticed, this issue was correctly fixed in Python 3 by using the C timed acquire methods of locks, instead of polling. The problem is that Python 2 supports a wide range of threading models:
Python/thread_atheos.h Python/thread_beos.h Python/thread_cthread.h Python/thread_lwp.h Python/thread_nt.h Python/thread_os2.h Python/thread_pth.h Python/thread_pthread.h Python/thread_sgi.h Python/thread_solaris.h Python/thread_wince.h In Python 3, it was possible to use more features of OS threads because we dropped all implementations to only keep the 2 major implementations: Python/thread_nt.h Python/thread_pthread.h Your change adds a new feature to threading.Lock in Python 2: -.. method:: Lock.acquire([blocking]) +.. method:: Lock.acquire(blocking=True, timeout=-1) But features cannot be added to Python 2 anymore! The backport changes critical C code. There is a (high) risk of introducing a regression. I suggest to close this issue as WONTFIX. @Benjamin (Python 2.7 release manager): What do you think? In 2015, it's time to upgrade to Python 3! https://docs.python.org/3/howto/pyporting.html ---------- nosy: +benjamin.peterson, haypo _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25084> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
