Hi Peter,
Source code:
import System.IO
import System.Posix
main = do
putStrLn "Waiting for 5 seconds."
sleep 5 -- doesn't sleep at all
putStrLn "Done."
OS:
Mac OS X 10.5
Compile command:
ghc --threaded testsleep.hs
If I remove --threaded, then it does sleep.
Thanks,
-John
On Tue, Feb 10, 2009 at 8:59 AM, Peter Verswyvelen <[email protected]>wrote:
> Hi John,
> Which sleep are you using? From which module? Can you show the full source
> with import statements?
>
> Cheers,
> Peter
>
> 2009/2/9 John Ky <[email protected]>
>
>> Hi Haskell Cafe,
>>
>> I wrote very short program to sleep for 5 seconds compiled with the
>> -threaded option in ghc on the Mac OS X 1.5.
>>
>> I am finding that using the sleep function doesn't sleep at all, whereas
>> using threadDelay does:
>>
>> main = do
>> putStrLn "Waiting for 5 seconds."
>> threadDelay 5000000 -- works
>> putStrLn "Done."
>>
>> main = do
>> putStrLn "Waiting for 5 seconds."
>> sleep 5 -- doesn't sleep at all
>> putStrLn "Done."
>>
>> Anybody know what's happening?
>>
>> Thanks
>>
>> -John
>>
>>
>> _______________________________________________
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>> http://www.haskell.org/mailman/listinfo/haskell-cafe
>>
>>
>
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