Hello Neil, Thursday, April 15, 2010, 12:37:35 PM, you wrote:
> I find non-termination with a much simpler program than yours (GHC 6.12.1): > forkIO $ do putStrLn "Started thread" > forever $ return () ghc multithreading is actually cooperative: it switches only on memory allocation. since almost any haskell code allocates, there is no problem - it works like preemptive one. but sometimes this assumption fails - with optimization enabled, your code doesn't allocate so there are no chances for thread switching. replacing return () with threadDelay call solves the problem -- Best regards, Bulat mailto:bulat.zigans...@gmail.com _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
