Honor added the comment: I will take a video on this subject. Then I will say the end result.
Thanks a lot. On Fri, Nov 11, 2016 at 7:27 PM, Mark Dickinson <rep...@bugs.python.org> wrote: > > Mark Dickinson added the comment: > > Thanks. The solution here is "Don't do that, then." That is, don't allow > this code to execute on your server in the first place. > > At a guess, you've got a multithreaded server that's executing the given > code on one thread, while continuing to listen for connections on another. > Now the problem is not only that the power computation takes a long time, > but also that the slow part all happens in a single bytecode instruction, > so the GIL never gets released while the power operation is in progress, > and no other threads can run. > > In theory it might be possible to rework the power operation to release > the GIL now and then, but even if we did that there are plenty of other > examples in the language that are going to have a similar effect (running > for a long time without releasing the GIL). Changing all those isn't > particularly practical. > > IOW, I'm afraid this isn't a problem with the core Python language; it's a > problem with how you're using it: you want to think very carefully before > allowing arbitrary untrusted code to execute on your server (if that's what > you're doing), for reasons exactly like this one. > > ---------- > > _______________________________________ > Python tracker <rep...@bugs.python.org> > <http://bugs.python.org/issue28669> > _______________________________________ > ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28669> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
