Exposing gthreads, and making exceptions safe under cthreads

[Martin von Loewis]

> It seems to me that you could also implement this using a hash table
> (or moral equivalent) in gthr-mach.h.  That is, nothing says you must
> use the underlying thread system's mechanism for thread-specific data.

Out of curiosity: How would this work?

It seems that you need *some* thread-specific state to get the key (or
whatever) to the hash table?

Martin