Re: [Haskell-cafe] Is it safe to create global variables using unsafePerformIO?

You would need the NOINLINE pragma

Ahh, right. Thanks for reminding.

It isn't clear that this will give an improvement in performance

Why is that? I think it's clear since I'm eliminating malloc calls. (though one may claim that malloc calls are so cheap it's not even measurable)

and what could otherwise possible be a thread safe API is no longer thread safe.

This is a fair point. Though in my case I don't think this is the case because this API is already not thread safe, because of the C API and not Haskell bindings. --- Ömer Sinan Ağacan http://osa1.net