[Haskell-cafe] catting to cat gets stuck at > 135K

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Mon Nov 10 20:58:43 EST 2008

On 2008 Nov 10, at 19:04, Jason Dusek wrote:

>>> simple exe bytes args        =  do
>>>  (i, o, e, p)            <-  runInteractiveProcess exe args Nothing
>>> Nothing
>>>  hPut i bytes
>>>  s                       <-  hGetContents o
>>>  hClose i
>>>  return s
>> Yep, that's your problem.  forkIO the hPut.
>  Maybe I didn't do enough here -- just wrapping in `forkIO`
>  does not seem to actually help.

*sigh* I hate the ghc runtime... it works in ghci, or compiled with - 
threaded.  Otherwise you still get the deadlock because it only  
switches threads under limited circumstances (garbage collections?)  
which isn't nearly often enough.

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

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