gthread API for c++0x thread lib

["Chris Fairles" <chris dot fairles at gmail dot com>]

I'm currently attempting to update the gthread API to implement
c++0x's thread library. Attached is a half-baked patch with my current
progress but besides gthr-posix.h, I'm basically programming blind
(i.e. no way to test) and so before I go any further I need some
advice/direction on how to progress from here.

Thus far I've been stuffing extra function prototypes and def'ns
around the ObjC stuff but there's overlap and I'm not sure how to
handle it (i.e. duplicated "gthrw" decl's of some pthread funcs).
Should any additions required by c++0x be guarded by some defined
macro (kind of like the objc stuff is guarded)?

As for the arch-specific headers, I can't find any information on the
MIPS SDE thread API nor am I able to find a list of prototypes in the
sdethread.h header.

The NKS additions are untested. Not entirely sure how to handle the
NXContext along with the NXThreadId_t. Currently I grouped them
together in __gthread_t. Can't really progress much further without
some run-time testing.

I haven't touched gnat due to lack of info/docs as well (however I
haven't looked too hard beyond Google). Same deal with rtems. TPF is
incomplete but it seems to have a one-to-one mapping to pthreads
anyway so fairly trivial to implement. VXWorks, Solaris and win32 I
just haven't gotten to yet mainly because I'd be writing code blind
like NKS etc which certainly isn't very efficient or wise.

Are there emulators available to facilitate testing? I couldn't find a
testsuite for the gthreads stuff as well, should there be?

In any case, this patch has at least allowed me to start hacking away
at the c++ thread lib since I'm on a x86_64 posix platform. It doesn't
break bootstrap the last I checked but
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37045 is currently
blocking further testing.

Cheers,
Chris

Attachment: gthr-patch.txt
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