Re: [Haskell-cafe] Need comments on a libusb asynchronous select/poll loop

On Wed, Apr 20, 2011 at 6:11 PM, Bas van Dijk wrote:

I still need to add appropriate conditions for checking whether the program is using the threaded RTS. What is the recommended approach for this?

I see GHC.Conc.IO uses a dynamic check:

foreign import ccall unsafe "rtsSupportsBoundThreads" threaded :: Bool

Is this also available to me as a library author?

I think there's a ticket for adding something along the lines of getSystemEventManager :: IO (Maybe EventManager) If that returns Just em, you're in the threaded RTS and have an EventManager. Johan