Sean Kelly wrote:
There are pthread calls for TLS which are implemented for OSX. But however it works (I haven't looked into it), it likely isn't as efficient or easy to deal with as the __thread storage class on other OSes.
It won't be as efficient. But that really doesn't matter at this point - accessing global variables in a tight loop is a bad idea anyway. TLS just has to work. It can be optimized later as OSX improves (which it must, as TLS is going to be a bigger and bigger deal as time goes on).
