Phil,
You could also determine the maximum size across all platforms and hardcode
that. Still ugly, I know.
On Fri, Oct 16, 2009 at 3:16 PM, Phil Dawes <[email protected]> wrote:
> Hi Slava,
>
> I had a look at pthreads on my way home from work. It's a really nasty
> api to FFI because all the types are opaque but must be created by the
> caller. I was just going to hardcode the type sizes but then I noticed
> they're different on each unix and also seem to differ between versions
> of libc.
>
> I was thinking of having the vm supply a C call to return a struct of
> all the sizes:
>
> struct pthread_size_info {
> int sizeof_pthread_mutex_t;
> int sizeof_pthread_mutexattr_t;
> ....
>
>
> pthread_sizes_t()
> : sizeof_pthread_mutex_t(sizeof(pthread_mutex_t)),
> sizeof_pthread_mutexattr_t(sizeof(pthread_mutexattr_t)),
> ....
> {}
> };
>
> extern "C" const pthread_sizes_info *pthread_sizes();
>
> I'm aware that this is an ugly hack. Is there a better way?
>
> Cheers,
>
> Phil
>
>
>
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