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

[Bas van Dijk]

On 20 April 2011 18:34, Johan Tibell <johan.tibell at gmail.com> wrote:
> On Wed, Apr 20, 2011 at 6:11 PM, Bas van Dijk <v.dijk.bas at gmail.com> 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