\begin{code}
module SMRep (
SMRep(..), ClosureType(..),
- isConstantRep, isStaticRep,
+ isStaticRep,
fixedHdrSize, arrWordsHdrSize, arrPtrsHdrSize,
fixedItblSize, pprSMRep
\begin{code}
data SMRep
-- static closure have an extra static link field at the end.
- = StaticRep
- Int -- # ptr words (useful for interpreter, debugger, etc)
- Int -- # non-ptr words
- ClosureType -- closure type
-
- | GenericRep -- GC routines consult sizes in info tbl
+ = GenericRep -- GC routines consult sizes in info tbl
+ Bool -- True <=> This is a static closure. Affects how
+ -- we garbage-collect it
Int -- # ptr words
Int -- # non-ptr words
ClosureType -- closure type
- | ConstantRep -- CONSTR with zero-arity
-
| BlackHoleRep
-data ClosureType
+data ClosureType -- Corresponds 1-1 with the varieties of closures
+ -- implemented by the RTS. Compare with ghc/includes/ClosureTypes.h
= CONSTR
- | CONSTR_p_n Int Int
+ | CONSTR_p_n -- The p_n variants have more efficient GC, but we
+ -- only provide them for dynamically-allocated closures
+ -- (We could do them for static ones, but we don't)
| CONSTR_NOCAF
| FUN
- | FUN_p_n Int Int
+ | FUN_p_n
| THUNK
- | THUNK_p_n Int Int
+ | THUNK_p_n
| THUNK_SELECTOR
deriving (Eq,Ord)
-
\end{code}
Size of a closure header.
\end{code}
\begin{code}
-isConstantRep, isStaticRep :: SMRep -> Bool
-isConstantRep ConstantRep = True
-isConstantRep other = False
-
-isStaticRep (StaticRep _ _ _) = True
-isStaticRep _ = False
+isStaticRep :: SMRep -> Bool
+isStaticRep (GenericRep is_static _ _ _) = is_static
+isStaticRep BlackHoleRep = False
\end{code}
\begin{code}
-{- ToDo: needed? -}
-instance Text SMRep where
- showsPrec d rep
- = showString (case rep of
- StaticRep _ _ _ -> "STATIC"
- GenericRep _ _ _ -> ""
- ConstantRep -> "")
-
instance Outputable SMRep where
ppr rep = pprSMRep rep
pprSMRep :: SMRep -> SDoc
-pprSMRep (GenericRep _ _ t) = pprClosureType t
-pprSMRep (StaticRep _ _ t) = pprClosureType t <> ptext SLIT("_STATIC")
-pprSMRep ConstantRep = ptext SLIT("CONSTR_NOCAF_STATIC")
-pprSMRep BlackHoleRep = ptext SLIT("BLACKHOLE")
-
-pprClosureType CONSTR = ptext SLIT("CONSTR")
-pprClosureType (CONSTR_p_n p n) = ptext SLIT("CONSTR_") <> int p <> char '_' <> int n
-pprClosureType CONSTR_NOCAF = ptext SLIT("CONSTR_NOCAF")
-pprClosureType FUN = ptext SLIT("FUN")
-pprClosureType (FUN_p_n p n) = ptext SLIT("FUN_") <> int p <> char '_' <> int n
-pprClosureType THUNK = ptext SLIT("THUNK")
-pprClosureType (THUNK_p_n p n) = ptext SLIT("THUNK_") <> int p <> char '_' <> int n
-pprClosureType THUNK_SELECTOR = ptext SLIT("THUNK_SELECTOR")
+pprSMRep (GenericRep True ptrs nptrs clo_ty) = pprClosureType clo_ty ptrs nptrs <> ptext SLIT("_STATIC")
+pprSMRep (GenericRep False ptrs nptrs clo_ty) = pprClosureType clo_ty ptrs nptrs
+
+pprClosureType CONSTR p n = ptext SLIT("CONSTR")
+pprClosureType CONSTR_p_n p n = ptext SLIT("CONSTR_") <> int p <> char '_' <> int n
+pprClosureType CONSTR_NOCAF p n = ptext SLIT("CONSTR_NOCAF")
+pprClosureType FUN p n = ptext SLIT("FUN")
+pprClosureType FUN_p_n p n = ptext SLIT("FUN_") <> int p <> char '_' <> int n
+pprClosureType THUNK p n = ptext SLIT("THUNK")
+pprClosureType THUNK_p_n p n = ptext SLIT("THUNK_") <> int p <> char '_' <> int n
+pprClosureType THUNK_SELECTOR p n = ptext SLIT("THUNK_SELECTOR")
#ifndef OMIT_NATIVE_CODEGEN
getSMRepClosureTypeInt :: SMRep -> Int
-getSMRepClosureTypeInt (GenericRep _ _ t) =
- case t of
- CONSTR -> cONSTR
- CONSTR_p_n 1 0 -> cONSTR_1_0
- CONSTR_p_n 0 1 -> cONSTR_0_1
- CONSTR_p_n 2 0 -> cONSTR_2_0
- CONSTR_p_n 1 1 -> cONSTR_1_1
- CONSTR_p_n 0 2 -> cONSTR_0_2
- CONSTR_NOCAF -> panic "getClosureTypeInt: CONSTR_NOCAF"
- FUN -> fUN
- FUN_p_n 1 0 -> fUN_1_0
- FUN_p_n 0 1 -> fUN_0_1
- FUN_p_n 2 0 -> fUN_2_0
- FUN_p_n 1 1 -> fUN_1_1
- FUN_p_n 0 2 -> fUN_0_2
- THUNK -> tHUNK
- THUNK_p_n 1 0 -> tHUNK_1_0
- THUNK_p_n 0 1 -> tHUNK_0_1
- THUNK_p_n 2 0 -> tHUNK_2_0
- THUNK_p_n 1 1 -> tHUNK_1_1
- THUNK_p_n 0 2 -> tHUNK_0_2
- 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 (GenericRep False _ _ CONSTR) = cONSTR
+getSMRepClosureTypeInt (GenericRep False 1 0 CONSTR_p_n) = cONSTR_1_0
+getSMRepClosureTypeInt (GenericRep False 0 1 CONSTR_p_n) = cONSTR_0_1
+getSMRepClosureTypeInt (GenericRep False 2 0 CONSTR_p_n) = cONSTR_2_0
+getSMRepClosureTypeInt (GenericRep False 1 1 CONSTR_p_n) = cONSTR_1_1
+getSMRepClosureTypeInt (GenericRep False 0 2 CONSTR_p_n) = cONSTR_0_2
+
+getSMRepClosureTypeInt (GenericRep False _ _ FUN) = fUN
+getSMRepClosureTypeInt (GenericRep False 1 0 FUN_p_n) = fUN_1_0
+getSMRepClosureTypeInt (GenericRep False 0 1 FUN_p_n) = fUN_0_1
+getSMRepClosureTypeInt (GenericRep False 2 0 FUN_p_n) = fUN_2_0
+getSMRepClosureTypeInt (GenericRep False 1 1 FUN_p_n) = fUN_1_1
+getSMRepClosureTypeInt (GenericRep False 0 2 FUN_p_n) = fUN_0_2
+
+getSMRepClosureTypeInt (GenericRep False _ _ THUNK) = tHUNK
+getSMRepClosureTypeInt (GenericRep False 1 0 THUNK_p_n) = tHUNK_1_0
+getSMRepClosureTypeInt (GenericRep False 0 1 THUNK_p_n) = tHUNK_0_1
+getSMRepClosureTypeInt (GenericRep False 2 0 THUNK_p_n) = tHUNK_2_0
+getSMRepClosureTypeInt (GenericRep False 1 1 THUNK_p_n) = tHUNK_1_1
+getSMRepClosureTypeInt (GenericRep False 0 2 THUNK_p_n) = tHUNK_0_2
+
+getSMRepClosureTypeInt (GenericRep False _ _ THUNK_SELECTOR) = tHUNK_SELECTOR
+
+getSMRepClosureTypeInt (GenericRep True _ _ CONSTR) = cONSTR_STATIC
+getSMRepClosureTypeInt (GenericRep True _ _ CONSTR_NOCAF) = cONSTR_NOCAF_STATIC
+getSMRepClosureTypeInt (GenericRep True _ _ FUN) = fUN_STATIC
+getSMRepClosureTypeInt (GenericRep True _ _ THUNK) = tHUNK_STATIC
getSMRepClosureTypeInt BlackHoleRep = bLACKHOLE
+getSMRepClosureTypeInt rep = pprPanic "getSMRepClosureTypeInt:" (pprSMRep rep)
+
+
-- Just the ones we need:
#include "../includes/ClosureTypes.h"
projects / ghc-hetmet.git / blobdiff