loadObj, -- :: String -> IO ()
unloadObj, -- :: String -> IO ()
insertSymbol, -- :: String -> String -> Ptr a -> IO ()
--- Suspicious; see defn
--- insertStableSymbol, -- :: String -> String -> a -> IO ()
lookupSymbol, -- :: String -> IO (Maybe (Ptr a))
resolveObjs -- :: IO SuccessFlag
) where
import Foreign ( nullPtr )
import GHC.Exts ( Ptr(..), unsafeCoerce# )
+
+
-- ---------------------------------------------------------------------------
-- RTS Linker Interface
-- ---------------------------------------------------------------------------
withCString str $ \c_str ->
c_insertSymbol c_obj_name c_str symbol
-{- Deeply suspicious use of unsafeCoerce#; should use makeStablePtr#
-insertStableSymbol :: String -> String -> a -> IO ()
-insertStableSymbol obj_name key symbol
- = let str = prefixUnderscore key
- in withCString obj_name $ \c_obj_name ->
- withCString str $ \c_str ->
- c_insertStableSymbol c_obj_name c_str (Ptr (unsafeCoerce# symbol))
--}
-
lookupSymbol :: String -> IO (Maybe (Ptr a))
lookupSymbol str_in = do
let str = prefixUnderscore str_in
foreign import ccall unsafe "addDLL" c_addDLL :: CString -> IO CString
foreign import ccall unsafe "initLinker" initObjLinker :: IO ()
foreign import ccall unsafe "insertSymbol" c_insertSymbol :: CString -> CString -> Ptr a -> IO ()
--- Suspicious: should take a stable pointer
--- foreign import ccall unsafe "insertStableSymbol" c_insertStableSymbol
--- :: CString -> CString -> Ptr a -> IO ()
foreign import ccall unsafe "lookupSymbol" c_lookupSymbol :: CString -> IO (Ptr a)
foreign import ccall unsafe "loadObj" c_loadObj :: CString -> IO Int
foreign import ccall unsafe "unloadObj" c_unloadObj :: CString -> IO Int
foreign import ccall unsafe "resolveObjs" c_resolveObjs :: IO Int
-
\end{code}