[Haskell-cafe] Can't figure out source of race condition when
marco-oweber at gmx.de
Sun Nov 2 15:15:25 EST 2008
On Mon, Nov 03, 2008 at 01:02:12AM +1100, Rafal Kolanski wrote:
> Rafal Kolanski.
> -- Pass text to md5sum and drop the final " -" when returning
> hashMD5 text = do
> (inp,out,err,pid) <- runInteractiveProcess "md5sum"  Nothing Nothing
> forkIO $ do
> hPutStrLn inp text
> hClose inp
> exit <- waitForProcess pid
> case exit of ExitFailure _ -> error "md5sum fail"
> _ -> return ()
Why do you use forkIO here? It's not necessary. The process will run in
background on its own. ?
It would help me tracking the problem down having a full compilable
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