>>> I've been wondering whether it's possible to release the GIL in the >>> regex engine during matching. >> >> I don't think that's possible. The regex engine can also operate on >> objects whose representation may move in memory when you don't hold >> the GIL (e.g. buffers that get mutated). Even if they stay in place - >> if their contents changes, regex results may be confusing. > > It seems probably worthwhile to optimize for the common case of using > the regexp engine on an immutable object of type "str" or "bytes", and > allow releasing the GIL in *that* case, even if you have to keep it for > the general case.
Right. This problem was the one that I thought of first. Thinking about these things is fairly difficult (to me, at least), so I think I could only tell whether I would consider a patch thread-safe that released the GIL around matching under selected circumstances - if I had the patch available. I don't see any obvious reason (assuming Guido's list of conditions holds - i.e. you are holding references to everything you access). Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
