On 31 August 2011 00:15, Bas van Dijk <v.dijk....@gmail.com> wrote: > I see what I can do. I'm first going to export the 'finished' function > from GHC.Event and use that to wait till the loop finishes and see if > that solves my problem.
Waiting till the loop finishes doesn't solve the problem. Here's an isolated program with the same problem that doesn't use the usb library: import Control.Concurrent import GHC.Event main = do em <- new forkIO $ loop em threadDelay 2000000 shutdown em threadDelay 2000000 When executed it prints: example: ioManagerWakeup: write: Bad file descriptor example: ioManagerDie: write: Bad file descriptor So it seems like a bug in GHC. I will create a ticket in the morning. Regards, Bas _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users