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{-# LANGUAGE ForeignFunctionInterface #-}
import Data.Word
import Data.IORef
import GHC.Clock
import Control.Concurrent
import Foreign.Ptr
import System.Mem
import Control.Monad
data Capability
foreign import ccall unsafe "RtsAPI.h rts_pause"
unsafe_rts_pause_c :: IO (Ptr Capability)
main :: IO ()
main = do
-- Making a unsafe call to rts_pause() should fail. We cannot allow this
-- haskell thread to continue if the RTS is paused.
_ <- unsafe_rts_pause_c
putStrLn "Oops! Haskell thread has continued even though RTS was paused."
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