[issue7753] newgil backport

[Marc-Andre Lemburg]

Marc-Andre Lemburg <mal at egenix.com> added the comment:

Ross Cohen wrote:
>> By the way, the new GIL only works with POSIX and Windows NT threading APIs. Perhaps it can't be backported at all to 2.x, given that 2.x supports more threading APIs than py3k does?
> 
> Looking at the Python/thread_*.h files, it looks like py3k still
> supports 9 different threading models. If that's accurate, it means
> py3k trunk is broken on platforms which use cthread, lwp, os2, pth,
> sgi, solaris and wince threading models. The 2.x series adds atheos and
> beos to that list.
> 
> I think the right way to fix this is to extend the thread_*.h files to
> have a proper abstraction for conditions which can be used by the
> newgil work. Then the maintainers for more obscure platforms can fix
> those instead of it all turning into a big mess in ceval_gil.h.

I find it rather strange that Python 3.x now only supports
NT and POSIX threads in ceval while it still supports the
whole set of other thread implementations for the _thread
module.

Has this been discussed on python-dev ?

Why can't the code necessary to get the new GIL working be
added to Sjoerd's portable thread library ?

As it stands, I think this is a bummer for both Python 2.7 and 3.2.

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