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

On 20 April 2011 18:34, Johan Tibell wrote:

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.

Whoever is proposing[1] that is a real genius! ;-) [1] http://thread.gmane.org/gmane.comp.lang.haskell.libraries/15458/focus=15543 Bas