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module Main (main) where
import GHC.Conc
import Control.Concurrent
import Control.Exception
import System.Exit
import Control.Monad
-- check that +RTS -xq is doing the right thing: the test requires
-- +RTS -xq300k
main = do
m <- newEmptyMVar
let action = do
e <- try $ do
setAllocationCounter (10*1024)
enableAllocationLimit
print (length [1..])
case e of
Left AllocationLimitExceeded{} -> do
c <- getAllocationCounter
when (c < 250*1024 || c > 350*1024) $ fail "wrong limit grace"
print (length [2..])
Right _ ->
fail "didn't catch AllocationLimitExceeded"
forkFinally action (putMVar m)
r <- takeMVar m
case r of
Left e | Just AllocationLimitExceeded <- fromException e -> return ()
_ -> print r >> exitFailure
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