import PrelNames
import TysWiredIn
-import Constants ( wORD_SIZE )
+import Constants
import Outputable
import Maybes
import Panic
import GHC.Arr ( Array(..) )
import GHC.Ptr ( Ptr(..), castPtr )
-import GHC.Exts
-import GHC.Int ( Int32(..), Int64(..) )
-import GHC.Word ( Word32(..), Word64(..) )
+import GHC.Exts
import Control.Monad
import Data.Maybe
import Data.Array.Base
import Data.List ( partition, nub )
-import Foreign.Storable
-
-import IO
+import Foreign
---------------------------------------------
-- * A representation of semi evaluated Terms
, subTerms :: [Term] }
| Prim { ty :: Type
- , value :: String }
+ , value :: [Word] }
| Suspension { ctype :: ClosureType
, mb_ty :: Maybe Type
, infoPtr :: Ptr ()
, infoTable :: StgInfoTable
, ptrs :: Array Int HValue
- , nonPtrs :: ByteArray#
+ , nonPtrs :: [Word]
}
instance Outputable ClosureType where
let tipe = readCType (BCI.tipe itbl)
elems = BCI.ptrs itbl
ptrsList = Array 0 (fromIntegral$ elems) ptrs
- ptrsList `seq` return (Closure tipe (Ptr iptr) itbl ptrsList nptrs)
+ nptrs_data = [W# (indexWordArray# nptrs i)
+ | I# i <- [0.. fromIntegral (BCI.nptrs itbl)] ]
+ ptrsList `seq` return (Closure tipe (Ptr iptr) itbl ptrsList nptrs_data)
readCType :: Integral a => a -> ClosureType
readCType i
isPointed t | Just (t, _) <- splitTyConApp_maybe t = not$ isUnliftedTypeKind (tyConKind t)
isPointed _ = True
-#define MKDECODER(offset,cons,builder) (offset, show$ cons (builder addr 0#))
-
-extractUnboxed :: [Type] -> ByteArray# -> [String]
-extractUnboxed tt ba = helper tt (byteArrayContents# ba)
- where helper :: [Type] -> Addr# -> [String]
- helper (t:tt) addr
- | Just ( tycon,_) <- splitTyConApp_maybe t
- = let (offset, txt) = decode tycon addr
- (I# word_offset) = offset*wORD_SIZE
- in txt : helper tt (plusAddr# addr word_offset)
- | otherwise
- = -- ["extractUnboxed.helper: Urk. I got a " ++ showSDoc (ppr t)]
- panic$ "extractUnboxed.helper: Urk. I got a " ++ showSDoc (ppr t)
- helper [] addr = []
- decode :: TyCon -> Addr# -> (Int, String)
- decode t addr
- | t == charPrimTyCon = MKDECODER(1,C#,indexCharOffAddr#)
- | t == intPrimTyCon = MKDECODER(1,I#,indexIntOffAddr#)
- | t == wordPrimTyCon = MKDECODER(1,W#,indexWordOffAddr#)
- | t == floatPrimTyCon = MKDECODER(1,F#,indexFloatOffAddr#)
- | t == doublePrimTyCon = MKDECODER(2,D#,indexDoubleOffAddr#)
- | t == int32PrimTyCon = MKDECODER(1,I32#,indexInt32OffAddr#)
- | t == word32PrimTyCon = MKDECODER(1,W32#,indexWord32OffAddr#)
- | t == int64PrimTyCon = MKDECODER(2,I64#,indexInt64OffAddr#)
- | t == word64PrimTyCon = MKDECODER(2,W64#,indexWord64OffAddr#)
- | t == addrPrimTyCon = MKDECODER(1,I#,(\x off-> addr2Int# (indexAddrOffAddr# x off))) --OPT Improve the presentation of addresses
- | t == stablePtrPrimTyCon = (1, "<stablePtr>")
- | t == stableNamePrimTyCon = (1, "<stableName>")
- | t == statePrimTyCon = (1, "<statethread>")
- | t == realWorldTyCon = (1, "<realworld>")
- | t == threadIdPrimTyCon = (1, "<ThreadId>")
- | t == weakPrimTyCon = (1, "<Weak>")
- | t == arrayPrimTyCon = (1,"<array>")
- | t == byteArrayPrimTyCon = (1,"<bytearray>")
- | t == mutableArrayPrimTyCon = (1, "<mutableArray>")
- | t == mutableByteArrayPrimTyCon = (1, "<mutableByteArray>")
- | t == mutVarPrimTyCon= (1, "<mutVar>")
- | t == mVarPrimTyCon = (1, "<mVar>")
- | t == tVarPrimTyCon = (1, "<tVar>")
- | otherwise = (1, showSDoc (char '<' <> ppr t <> char '>'))
- -- We cannot know the right offset in the otherwise case, so 1 is just a wild dangerous guess!
- -- TODO: Improve the offset handling in decode (make it machine dependant)
+extractUnboxed :: [Type] -> Closure -> [[Word]]
+extractUnboxed tt clos = go tt (nonPtrs clos)
+ where sizeofType t
+ | Just (tycon,_) <- splitTyConApp_maybe t
+ = ASSERT (isPrimTyCon tycon) sizeofTyCon tycon
+ | otherwise = pprPanic "Expected a TcTyCon" (ppr t)
+ go [] _ = []
+ go (t:tt) xx
+ | (x, rest) <- splitAt (sizeofType t `div` wORD_SIZE) xx
+ = x : go tt rest
+
+sizeofTyCon = sizeofPrimRep . tyConPrimRep
-----------------------------------
-- * Traversals for Terms
-----------------------------------
data TermFold a = TermFold { fTerm :: Type -> DataCon -> HValue -> [a] -> a
- , fPrim :: Type -> String -> a
+ , fPrim :: Type -> [Word] -> a
, fSuspension :: ClosureType -> Maybe Type -> HValue -> Maybe Name -> a
}
pprTerm _ t = pprTerm1 t
-pprTerm1 Prim{value=value} = text value
+pprTerm1 Prim{value=words, ty=ty} = text$ repPrim (tyConAppTyCon ty) words
pprTerm1 t@Term{} = pprTerm 0 t
pprTerm1 Suspension{bound_to=Nothing} = char '_' -- <> ppr ct <> char '_'
pprTerm1 Suspension{mb_ty=Just ty, bound_to=Just n}
getListTerms t@Suspension{} = [t]
getListTerms t = pprPanic "getListTerms" (ppr t)
+repPrim :: TyCon -> [Word] -> String
+repPrim t = rep where
+ rep x
+ | t == charPrimTyCon = show (build x :: Char)
+ | t == intPrimTyCon = show (build x :: Int)
+ | t == wordPrimTyCon = show (build x :: Word)
+ | t == floatPrimTyCon = show (build x :: Float)
+ | t == doublePrimTyCon = show (build x :: Double)
+ | t == int32PrimTyCon = show (build x :: Int32)
+ | t == word32PrimTyCon = show (build x :: Word32)
+ | t == int64PrimTyCon = show (build x :: Int64)
+ | t == word64PrimTyCon = show (build x :: Word64)
+ | t == addrPrimTyCon = show (nullPtr `plusPtr` build x)
+ | t == stablePtrPrimTyCon = "<stablePtr>"
+ | t == stableNamePrimTyCon = "<stableName>"
+ | t == statePrimTyCon = "<statethread>"
+ | t == realWorldTyCon = "<realworld>"
+ | t == threadIdPrimTyCon = "<ThreadId>"
+ | t == weakPrimTyCon = "<Weak>"
+ | t == arrayPrimTyCon = "<array>"
+ | t == byteArrayPrimTyCon = "<bytearray>"
+ | t == mutableArrayPrimTyCon = "<mutableArray>"
+ | t == mutableByteArrayPrimTyCon = "<mutableByteArray>"
+ | t == mutVarPrimTyCon= "<mutVar>"
+ | t == mVarPrimTyCon = "<mVar>"
+ | t == tVarPrimTyCon = "<tVar>"
+ | otherwise = showSDoc (char '<' <> ppr t <> char '>')
+ where build ww = unsafePerformIO $ withArray ww (peek . castPtr)
-----------------------------------
-- Type Reconstruction
-----------------------------------
clos <- trIO $ getClosureData a
case tipe clos of
-- Thunks we may want to force
+-- NB. this won't attempt to force a BLACKHOLE. Even with :force, we never
+-- force blackholes, because it would almost certainly result in deadlock,
+-- and showing the '_' is more useful.
t | isThunk t && force -> seq a $ go tv ty a
-- We always follow indirections
Indirection _ -> go tv ty $! (ptrs clos ! 0)
subTermsP <- sequence $ drop extra_args -- all extra arguments are pointed
[ appArr (go tv t) (ptrs clos) i
| (i,tv,t) <- zip3 [0..] subTermTvs subTtypesP]
- let unboxeds = extractUnboxed subTtypesNP (nonPtrs clos)
+ let unboxeds = extractUnboxed subTtypesNP clos
subTermsNP = map (uncurry Prim) (zip subTtypesNP unboxeds)
subTerms = reOrderTerms subTermsP subTermsNP (drop extra_args subTtypes)
return (Term tv dc a subTerms)
projects / ghc-hetmet.git / blobdiff