Subj : Re: pthread_getspecific or __thread for signal handler?
To   : comp.programming.threads
From : Alexander Terekhov
Date : Tue Feb 01 2005 09:11 am


Loic Domaigne wrote:
[...]
> I would go for __thread.
> 
> Because on platform where it is not supported, you won't be able to
> compile the program. And on platform where it is supported, it should
> work too.

Should work? Not if allocation of __thread storage is done lazy 
and in async-signal-UNsafe manner.

Next comes "violation" of C/POSIX restriction imposed on accesses 
within async-signal handlers (only assignments to static volatile
sig_atomic_t are allowed).

regards,
alexander.

.