Programatic way to determine the contents of struct pthread_*_t...

[Sean Chittenden]

Howdy.  What's the best way to programatically gain access to the  
contents of the various struct pthread_*_t members?  In OS-X and  
Linux, the contents are defined in /usr/include/*/_*pthreads.h, but  
that doesn't appear to be the case for FreeBSD at the moment.  I'm in  
the process of porting D's Tango runtime to FreeBSD[1] and it appears  
that due to FreeBSD's multi-thread model, this is a bit problematic.   
Is there an obvious (or not so obvious) magic woobie stick that I can  
shake at this problem?  I'm mostly done with the port at this point,  
but am a bit perplexed as to how to approach the poking at internals  
problem since D's runtime environment is possibly tied to my kernel  
configuration.  Less than keen on that reality.  Can I safely assume  
that libthr is now king of the hill and isn't about to be dethroned  
anytime soon?

Having looked at src/lib/lib(thr|pthread)/thread/thr_private.h - the  
sizes are different, the contents are different, etc.  Given other  
platforms have this publicly defined in userspace and we don't...  is  
this going to get kicked over to userland again at somepoint or are  
we always going to be indirectly passing around pthread_*_t structs?

Thoughts/suggestions?  Thanks in advance!  -sc

[1] D is a slick language and very much worth a hander if you haven't  
poked at it before.  Tango is an alternate standard class library and  
runtime environment for D that has many performance advantages over  
the stock runtime environment.

Tango Info: http://www.dsource.org/projects/tango
D Info: http://www.digitalmars.com/d/

PS  Very aware of the dangers/stupidity associated with poking at the  
contents of structures, but for the time being, that's how tango  
works for threading compatibilities.  If there's a #define that  
specifies the version number of the pthreads structures, I'd love to  
make use of it as a safety belt.

--
Sean Chittenden
sean at chittenden.org