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Diffstat (limited to 'testsuite/tests/concurrent/should_run/throwto003.hs')
-rw-r--r-- | testsuite/tests/concurrent/should_run/throwto003.hs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/testsuite/tests/concurrent/should_run/throwto003.hs b/testsuite/tests/concurrent/should_run/throwto003.hs new file mode 100644 index 0000000000..6369c62352 --- /dev/null +++ b/testsuite/tests/concurrent/should_run/throwto003.hs @@ -0,0 +1,17 @@ +{-# LANGUAGE DoRec, ScopedTypeVariables #-} +import Control.Concurrent +import Control.Exception +import Control.Monad +import Prelude hiding (catch) + +main = do + m <- newMVar 1 + t1 <- forkIO $ thread m + t2 <- forkIO $ forever $ killThread t1 + threadDelay 1000000 + takeMVar m + +thread m = run + where + run = (unblock $ forever $ modifyMVar_ m $ \v -> if v `mod` 2 == 1 then return (v*2) else return (v-1)) + `catch` \(e::SomeException) -> run |