%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[SMRep]{Storage manager representations of closure}
\begin{code}
module SMRep (
- SMRep(..), SMSpecRepKind(..), SMUpdateKind(..),
- getSMInfoStr, getSMInitHdrStr, getSMUpdInplaceHdrStr,
- ltSMRepHdr,
- isConstantRep, isSpecRep, isStaticRep, isPhantomRep,
- isIntLikeRep
+ SMRep(..), ClosureType(..),
+ isConstantRep, isStaticRep,
+ fixedHdrSize, arrHdrSize, fixedItblSize, getSMRepStr, getClosureTypeStr
+
+#ifndef OMIT_NATIVE_CODEGEN
+ , getSMRepClosureTypeInt
+ , cONSTR
+ , cONSTR_STATIC
+ , cONSTR_NOCAF_STATIC
+ , fUN
+ , fUN_STATIC
+ , tHUNK
+ , tHUNK_STATIC
+ , tHUNK_SELECTOR
+ , rET_SMALL
+ , rET_VEC_SMALL
+ , rET_BIG
+ , rET_VEC_BIG
+ , bLACKHOLE
+#endif
) where
#include "HsVersions.h"
+import CmdLineOpts
+import AbsCSyn ( Liveness(..) )
+import Constants ( sTD_HDR_SIZE, pROF_HDR_SIZE,
+ gRAN_HDR_SIZE, tICKY_HDR_SIZE, aRR_HDR_SIZE,
+ sTD_ITBL_SIZE, pROF_ITBL_SIZE,
+ gRAN_ITBL_SIZE, tICKY_ITBL_SIZE )
import Outputable
import Util ( panic )
import GlaExts ( Int(..), Int#, (<#), (==#), (<#), (>#) )
%* *
%************************************************************************
-Ways in which a closure may be represented by the storage manager;
-this list slavishly follows the storage-manager interface document.
-
\begin{code}
-data SMSpecRepKind
- = SpecRep -- Normal Spec representation
-
- | ConstantRep -- Common me up with single global copy
- -- Used for nullary constructors
-
- | CharLikeRep -- Common me up with entry from global table
-
- | IntLikeRep -- Common me up with entry from global table,
- -- if the intlike field is in range.
-
-data SMUpdateKind
- = SMNormalForm -- Normal form, no update
- | SMSingleEntry -- Single entry thunk, non-updatable
- | SMUpdatable -- Shared thunk, updatable
-
data SMRep
- = StaticRep -- Don't move me, Oh garbage collector!
- -- Used for all statically-allocated closures.
+ -- static closure have an extra static link field at the end.
+ = StaticRep
Int -- # ptr words (useful for interpreter, debugger, etc)
Int -- # non-ptr words
-
- | SpecialisedRep -- GC routines know size etc
- -- All have same _HS = SPEC_HS and no _VHS
- SMSpecRepKind -- Which kind of specialised representation
- Int -- # ptr words
- Int -- # non-ptr words
- SMUpdateKind -- Updatable?
+ ClosureType -- closure type
| GenericRep -- GC routines consult sizes in info tbl
Int -- # ptr words
Int -- # non-ptr words
- SMUpdateKind -- Updatable?
+ ClosureType -- closure type
- | BigTupleRep -- All ptrs, size in var-hdr field
- -- Used for big tuples
- Int -- # ptr words
+ | ConstantRep -- CONSTR with zero-arity
- | DataRep -- All non-ptrs, size in var-hdr field
- -- Used for arbitrary-precision integers, strings
- Int -- # non-ptr words
+ | BlackHoleRep
+
+data ClosureType
+ = CONSTR
+ | CONSTR_NOCAF
+ | FUN
+ | THUNK
+ | THUNK_SELECTOR
+ deriving (Eq,Ord)
- | DynamicRep -- Size and # ptrs in var-hdr field
- -- Used by RTS for partial applications
+\end{code}
+
+Size of a closure header.
- | BlackHoleRep -- for black hole closures
+\begin{code}
+fixedHdrSize :: Int{-words-}
+fixedHdrSize = sTD_HDR_SIZE + profHdrSize + granHdrSize + tickyHdrSize
- | PhantomRep -- for "phantom" closures that only exist in registers
+profHdrSize :: Int{-words-}
+profHdrSize | opt_SccProfilingOn = pROF_HDR_SIZE
+ | otherwise = 0
- | MuTupleRep -- All ptrs, size in var-hdr field
- -- Used for mutable tuples
- Int -- # ptr words
+granHdrSize :: Int{-words-}
+granHdrSize | opt_GranMacros = gRAN_HDR_SIZE
+ | otherwise = 0
-{- Mattson review:
-
-To: simonpj@dcs.gla.ac.uk, partain@dcs.gla.ac.uk
-Cc: kh@dcs.gla.ac.uk, trinder@dcs.gla.ac.uk, areid@dcs.gla.ac.uk
-Subject: Correct me if I'm wrong...
-Date: Fri, 17 Feb 1995 18:09:00 +0000
-From: Jim Mattson <mattson@dcs.gla.ac.uk>
-
-BigTupleRep == TUPLE
-
- Never generated by the compiler, and only used in the RTS when
- mutuples don't require special attention at GC time (e.g. 2s)
- When it is used, it is a primitive object (never entered).
- May be mutable...probably should never be used in the parallel
- system, since we need to distinguish mutables from immutables when
- deciding whether to copy or move closures across processors.
-
-DataRep == DATA (aka MutableByteArray & ByteArray)
- Never generated by the compiler, and only used in the RTS for
- ArrayOfData. Always a primitive object (never entered). May
- be mutable...though we don't distinguish between mutable and
- immutable data arrays in the sequential world, it would probably
- be useful in the parallel world to know when it is safe to just
- copy one of these. I believe the hooks are in place for changing
- the InfoPtr on a MutableByteArray when it's frozen to a ByteArray
- if we want to do so.
-
-DynamicRep == DYN
- Never generated by the compiler, and only used in the RTS for
- PAPs and the Stable Pointer table. PAPs are non-primitive,
- non-updatable, normal-form objects, but the SPT is a primitive,
- mutable object. At the moment, there is no SPT in the parallel
- world. Presumably, it would be possible to have an SPT on each
- processor, and we could identify a stable pointer as a (processor,
- SPT-entry) pair, but would it be worth it?
-
-MuTupleRep == MUTUPLE
- Never generated by the compiler, and only used in the RTS when
- mutuples *do* require special attention at GC time.
- When it is used, it is a primitive object (never entered).
- Always mutable...there is an IMMUTUPLE in the RTS, but no
- corresponding type in the compiler.
-
---jim
--}
+tickyHdrSize :: Int{-words-}
+tickyHdrSize | opt_DoTickyProfiling = tICKY_HDR_SIZE
+ | otherwise = 0
+
+arrHdrSize :: Int{-words-}
+arrHdrSize = fixedHdrSize + aRR_HDR_SIZE
\end{code}
-\begin{code}
-isConstantRep, isSpecRep, isStaticRep, isPhantomRep, isIntLikeRep :: SMRep -> Bool
-isConstantRep (SpecialisedRep ConstantRep _ _ _) = True
-isConstantRep other = False
+Size of an info table.
-isSpecRep (SpecialisedRep kind _ _ _) = True -- All the kinds of Spec closures
-isSpecRep other = False -- True indicates that the _VHS is 0 !
+\begin{code}
+fixedItblSize :: Int{-words-}
+fixedItblSize = sTD_ITBL_SIZE + profItblSize + granItblSize + tickyItblSize
-isStaticRep (StaticRep _ _) = True
-isStaticRep _ = False
+profItblSize :: Int{-words-}
+profItblSize | opt_SccProfilingOn = pROF_ITBL_SIZE
+ | otherwise = 0
-isPhantomRep PhantomRep = True
-isPhantomRep _ = False
+granItblSize :: Int{-words-}
+granItblSize | opt_GranMacros = gRAN_ITBL_SIZE
+ | otherwise = 0
-isIntLikeRep (SpecialisedRep IntLikeRep _ _ _) = True
-isIntLikeRep other = False
+tickyItblSize :: Int{-words-}
+tickyItblSize | opt_DoTickyProfiling = tICKY_ITBL_SIZE
+ | otherwise = 0
\end{code}
\begin{code}
-instance Eq SMRep where
- (SpecialisedRep k1 a1 b1 _) == (SpecialisedRep k2 a2 b2 _) = (tagOf_SMSpecRepKind k1) _EQ_ (tagOf_SMSpecRepKind k2)
- && a1 == a2 && b1 == b2
- (GenericRep a1 b1 _) == (GenericRep a2 b2 _) = a1 == a2 && b1 == b2
- (BigTupleRep a1) == (BigTupleRep a2) = a1 == a2
- (MuTupleRep a1) == (MuTupleRep a2) = a1 == a2
- (DataRep a1) == (DataRep a2) = a1 == a2
- a == b = (tagOf_SMRep a) _EQ_ (tagOf_SMRep b)
-
-ltSMRepHdr :: SMRep -> SMRep -> Bool
-a `ltSMRepHdr` b = (tagOf_SMRep a) _LT_ (tagOf_SMRep b)
-
-instance Ord SMRep where
- -- ToDo: cmp-ify? This instance seems a bit weird (WDP 94/10)
- rep1 <= rep2 = rep1 < rep2 || rep1 == rep2
- rep1 < rep2
- = let tag1 = tagOf_SMRep rep1
- tag2 = tagOf_SMRep rep2
- in
- if tag1 _LT_ tag2 then True
- else if tag1 _GT_ tag2 then False
- else {- tags equal -} rep1 `lt` rep2
- where
- (SpecialisedRep k1 a1 b1 _) `lt` (SpecialisedRep k2 a2 b2 _) =
- t1 _LT_ t2 || (t1 _EQ_ t2 && (a1 < a2 || (a1 == a2 && b1 < b2)))
- where t1 = tagOf_SMSpecRepKind k1
- t2 = tagOf_SMSpecRepKind k2
- (GenericRep a1 b1 _) `lt` (GenericRep a2 b2 _) = a1 < a2 || (a1 == a2 && b1 < b2)
- (BigTupleRep a1) `lt` (BigTupleRep a2) = a1 < a2
- (MuTupleRep a1) `lt` (MuTupleRep a2) = a1 < a2
- (DataRep a1) `lt` (DataRep a2) = a1 < a2
- a `lt` b = True
-
-tagOf_SMSpecRepKind SpecRep = (ILIT(1) :: FAST_INT)
-tagOf_SMSpecRepKind ConstantRep = ILIT(2)
-tagOf_SMSpecRepKind CharLikeRep = ILIT(3)
-tagOf_SMSpecRepKind IntLikeRep = ILIT(4)
-
-tagOf_SMRep (StaticRep _ _) = (ILIT(1) :: FAST_INT)
-tagOf_SMRep (SpecialisedRep k _ _ _) = ILIT(2)
-tagOf_SMRep (GenericRep _ _ _) = ILIT(3)
-tagOf_SMRep (BigTupleRep _) = ILIT(4)
-tagOf_SMRep (DataRep _) = ILIT(5)
-tagOf_SMRep DynamicRep = ILIT(6)
-tagOf_SMRep BlackHoleRep = ILIT(7)
-tagOf_SMRep PhantomRep = ILIT(8)
-tagOf_SMRep (MuTupleRep _) = ILIT(9)
+isConstantRep, isStaticRep :: SMRep -> Bool
+isConstantRep ConstantRep = True
+isConstantRep other = False
+isStaticRep (StaticRep _ _ _) = True
+isStaticRep _ = False
+\end{code}
+
+\begin{code}
+{- ToDo: needed? -}
instance Text SMRep where
showsPrec d rep
= showString (case rep of
- StaticRep _ _ -> "STATIC"
- SpecialisedRep kind _ _ SMNormalForm -> "SPEC_N"
- SpecialisedRep kind _ _ SMSingleEntry -> "SPEC_S"
- SpecialisedRep kind _ _ SMUpdatable -> "SPEC_U"
- GenericRep _ _ SMNormalForm -> "GEN_N"
- GenericRep _ _ SMSingleEntry -> "GEN_S"
- GenericRep _ _ SMUpdatable -> "GEN_U"
- BigTupleRep _ -> "TUPLE"
- DataRep _ -> "DATA"
- DynamicRep -> "DYN"
- BlackHoleRep -> "BH"
- PhantomRep -> "INREGS"
- MuTupleRep _ -> "MUTUPLE")
+ StaticRep _ _ _ -> "STATIC"
+ GenericRep _ _ _ -> ""
+ ConstantRep -> "")
instance Outputable SMRep where
ppr rep = text (show rep)
-getSMInfoStr :: SMRep -> String
-getSMInfoStr (StaticRep _ _) = "STATIC"
-getSMInfoStr (SpecialisedRep ConstantRep _ _ _) = "CONST"
-getSMInfoStr (SpecialisedRep CharLikeRep _ _ _) = "CHARLIKE"
-getSMInfoStr (SpecialisedRep IntLikeRep _ _ _) = "INTLIKE"
-getSMInfoStr (SpecialisedRep SpecRep _ _ SMNormalForm) = "SPEC_N"
-getSMInfoStr (SpecialisedRep SpecRep _ _ SMSingleEntry) = "SPEC_S"
-getSMInfoStr (SpecialisedRep SpecRep _ _ SMUpdatable) = "SPEC_U"
-getSMInfoStr (GenericRep _ _ SMNormalForm) = "GEN_N"
-getSMInfoStr (GenericRep _ _ SMSingleEntry) = "GEN_S"
-getSMInfoStr (GenericRep _ _ SMUpdatable) = "GEN_U"
-getSMInfoStr (BigTupleRep _) = "TUPLE"
-getSMInfoStr (DataRep _ ) = "DATA"
-getSMInfoStr DynamicRep = "DYN"
-getSMInfoStr BlackHoleRep = panic "getSMInfoStr.BlackHole"
-getSMInfoStr PhantomRep = "INREGS"
-getSMInfoStr (MuTupleRep _) = "MUTUPLE"
-
-getSMInitHdrStr :: SMRep -> String
-getSMInitHdrStr (SpecialisedRep IntLikeRep _ _ _) = "SET_INTLIKE"
-getSMInitHdrStr (SpecialisedRep SpecRep _ _ _) = "SET_SPEC"
-getSMInitHdrStr (GenericRep _ _ _) = "SET_GEN"
-getSMInitHdrStr (BigTupleRep _) = "SET_TUPLE"
-getSMInitHdrStr (DataRep _ ) = "SET_DATA"
-getSMInitHdrStr DynamicRep = "SET_DYN"
-getSMInitHdrStr BlackHoleRep = "SET_BH"
-#ifdef DEBUG
-getSMInitHdrStr (StaticRep _ _) = panic "getSMInitHdrStr.Static"
-getSMInitHdrStr PhantomRep = panic "getSMInitHdrStr.Phantom"
-getSMInitHdrStr (MuTupleRep _) = panic "getSMInitHdrStr.Mutuple"
-getSMInitHdrStr (SpecialisedRep ConstantRep _ _ _) = panic "getSMInitHdrStr.Constant"
-getSMInitHdrStr (SpecialisedRep CharLikeRep _ _ _) = panic "getSMInitHdrStr.CharLike"
-#endif
-
-getSMUpdInplaceHdrStr :: SMRep -> String
-getSMUpdInplaceHdrStr (SpecialisedRep ConstantRep _ _ _) = "INPLACE_UPD"
-getSMUpdInplaceHdrStr (SpecialisedRep CharLikeRep _ _ _) = "INPLACE_UPD"
-getSMUpdInplaceHdrStr (SpecialisedRep IntLikeRep _ _ _) = "INPLACE_UPD"
-getSMUpdInplaceHdrStr (SpecialisedRep SpecRep _ _ _) = "INPLACE_UPD"
-#ifdef DEBUG
-getSMUpdInplaceHdrStr (StaticRep _ _) = panic "getSMUpdInplaceHdrStr.Static"
-getSMUpdInplaceHdrStr (GenericRep _ _ _) = panic "getSMUpdInplaceHdrStr.Generic"
-getSMUpdInplaceHdrStr (BigTupleRep _ ) = panic "getSMUpdInplaceHdrStr.BigTuple"
-getSMUpdInplaceHdrStr (DataRep _ ) = panic "getSMUpdInplaceHdrStr.Data"
-getSMUpdInplaceHdrStr DynamicRep = panic "getSMUpdInplaceHdrStr.Dynamic"
-getSMUpdInplaceHdrStr BlackHoleRep = panic "getSMUpdInplaceHdrStr.BlackHole"
-getSMUpdInplaceHdrStr PhantomRep = panic "getSMUpdInplaceHdrStr.Phantom"
-getSMUpdInplaceHdrStr (MuTupleRep _ ) = panic "getSMUpdInplaceHdrStr.MuTuple"
-#endif
+getSMRepStr (GenericRep _ _ t) = getClosureTypeStr t
+getSMRepStr (StaticRep _ _ t) = getClosureTypeStr t ++ "_STATIC"
+getSMRepStr ConstantRep = "CONSTR_NOCAF_STATIC"
+getSMRepStr BlackHoleRep = "BLACKHOLE"
+
+getClosureTypeStr CONSTR = "CONSTR"
+getClosureTypeStr CONSTR_NOCAF = "CONSTR_NOCAF"
+getClosureTypeStr FUN = "FUN"
+getClosureTypeStr THUNK = "THUNK"
+getClosureTypeStr THUNK_SELECTOR = "THUNK_SELECTOR"
+
+#ifndef OMIT_NATIVE_CODEGEN
+getSMRepClosureTypeInt :: SMRep -> Int
+getSMRepClosureTypeInt (GenericRep _ _ t) =
+ case t of
+ CONSTR -> cONSTR
+ CONSTR_NOCAF -> panic "getClosureTypeInt: CONSTR_NOCAF"
+ FUN -> fUN
+ THUNK -> tHUNK
+ THUNK_SELECTOR -> tHUNK_SELECTOR
+getSMRepClosureTypeInt (StaticRep _ _ t) =
+ case t of
+ CONSTR -> cONSTR_STATIC
+ CONSTR_NOCAF -> cONSTR_NOCAF_STATIC
+ FUN -> fUN_STATIC
+ THUNK -> tHUNK_STATIC
+ THUNK_SELECTOR -> panic "getClosureTypeInt: THUNK_SELECTOR_STATIC"
+
+getSMRepClosureTypeInt ConstantRep = cONSTR_NOCAF_STATIC
+
+getSMRepClosureTypeInt BlackHoleRep = bLACKHOLE
+
+-- Just the ones we need:
+
+#include "../includes/ClosureTypes.h"
+
+cONSTR = (CONSTR :: Int)
+cONSTR_STATIC = (CONSTR_STATIC :: Int)
+cONSTR_NOCAF_STATIC = (CONSTR_NOCAF_STATIC :: Int)
+fUN = (FUN :: Int)
+fUN_STATIC = (FUN_STATIC :: Int)
+tHUNK = (THUNK :: Int)
+tHUNK_STATIC = (THUNK_STATIC :: Int)
+tHUNK_SELECTOR = (THUNK_SELECTOR :: Int)
+rET_SMALL = (RET_SMALL :: Int)
+rET_VEC_SMALL = (RET_VEC_SMALL :: Int)
+rET_BIG = (RET_BIG :: Int)
+rET_VEC_BIG = (RET_VEC_BIG :: Int)
+bLACKHOLE = (BLACKHOLE :: Int)
+
+#endif OMIT_NATIVE_CODEGEN
\end{code}
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