-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude #-}
+
--------------------------------------------------------------------------------
-- |
-- Module : Foreign.Marshal.Pool
import GHC.Base ( Int, Monad(..), (.), not )
import GHC.Err ( undefined )
import GHC.Exception ( throw )
-import GHC.IOBase ( IO, IORef, newIORef, readIORef, writeIORef
- block, unblock, catchAny )
+import GHC.IO ( IO, mask, catchAny )
+import GHC.IORef ( IORef, newIORef, readIORef, writeIORef )
import GHC.List ( elem, length )
import GHC.Num ( Num(..) )
#else
#if defined(__NHC__)
import IO ( bracket )
#else
-import Control.Exception ( bracket )
+import Control.Exception.Base ( bracket )
#endif
#endif
withPool :: (Pool -> IO b) -> IO b
#ifdef __GLASGOW_HASKELL__
withPool act = -- ATTENTION: cut-n-paste from Control.Exception below!
- block (do
+ mask (\restore -> do
pool <- newPool
val <- catchAny
- (unblock (act pool))
+ (restore (act pool))
(\e -> do freePool pool; throw e)
freePool pool
return val)
pooledReallocBytes :: Pool -> Ptr a -> Int -> IO (Ptr a)
pooledReallocBytes (Pool pool) ptr size = do
let cPtr = castPtr ptr
- throwIf (not . (cPtr `elem`)) (\_ -> "pointer not in pool") (readIORef pool)
+ _ <- throwIf (not . (cPtr `elem`)) (\_ -> "pointer not in pool") (readIORef pool)
newPtr <- reallocBytes cPtr size
ptrs <- readIORef pool
writeIORef pool (newPtr : delete cPtr ptrs)