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%
% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[SMRep]{Storage manager representations of closure}
This is here, rather than in ClosureInfo, just to keep nhc happy.
Other modules should access this info through ClosureInfo.
\begin{code}
module SMRep (
SMRep(..), ClosureType(..),
isStaticRep,
fixedHdrSize, arrWordsHdrSize, arrPtrsHdrSize,
fixedItblSize, pprSMRep
#ifndef OMIT_NATIVE_CODEGEN
, getSMRepClosureTypeInt
, cONSTR
, cONSTR_1_0
, cONSTR_0_1
, cONSTR_2_0
, cONSTR_1_1
, cONSTR_0_2
, cONSTR_STATIC
, cONSTR_NOCAF_STATIC
, fUN
, fUN_1_0
, fUN_0_1
, fUN_2_0
, fUN_1_1
, fUN_0_2
, fUN_STATIC
, tHUNK
, tHUNK_1_0
, tHUNK_0_1
, tHUNK_2_0
, tHUNK_1_1
, tHUNK_0_2
, 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_WORDS_HDR_SIZE, aRR_PTRS_HDR_SIZE,
sTD_ITBL_SIZE, pROF_ITBL_SIZE,
gRAN_ITBL_SIZE, tICKY_ITBL_SIZE )
import Outputable
\end{code}
%************************************************************************
%* *
\subsubsection[SMRep-datatype]{@SMRep@---storage manager representation}
%* *
%************************************************************************
\begin{code}
data SMRep
-- static closure have an extra static link field at the end.
= 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
| BlackHoleRep
data ClosureType -- Corresponds 1-1 with the varieties of closures
-- implemented by the RTS. Compare with ghc/includes/ClosureTypes.h
= CONSTR
| 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
| THUNK
| THUNK_p_n
| THUNK_SELECTOR
deriving (Eq,Ord)
\end{code}
Size of a closure header.
\begin{code}
fixedHdrSize :: Int{-words-}
fixedHdrSize = sTD_HDR_SIZE + profHdrSize + granHdrSize + tickyHdrSize
profHdrSize :: Int{-words-}
profHdrSize | opt_SccProfilingOn = pROF_HDR_SIZE
| otherwise = 0
granHdrSize :: Int{-words-}
granHdrSize | opt_GranMacros = gRAN_HDR_SIZE
| otherwise = 0
tickyHdrSize :: Int{-words-}
tickyHdrSize | opt_DoTickyProfiling = tICKY_HDR_SIZE
| otherwise = 0
arrWordsHdrSize :: Int{-words-}
arrWordsHdrSize = fixedHdrSize + aRR_WORDS_HDR_SIZE
arrPtrsHdrSize :: Int{-words-}
arrPtrsHdrSize = fixedHdrSize + aRR_PTRS_HDR_SIZE
\end{code}
Size of an info table.
\begin{code}
fixedItblSize :: Int{-words-}
fixedItblSize = sTD_ITBL_SIZE + profItblSize + granItblSize + tickyItblSize
profItblSize :: Int{-words-}
profItblSize | opt_SccProfilingOn = pROF_ITBL_SIZE
| otherwise = 0
granItblSize :: Int{-words-}
granItblSize | opt_GranMacros = gRAN_ITBL_SIZE
| otherwise = 0
tickyItblSize :: Int{-words-}
tickyItblSize | opt_DoTickyProfiling = tICKY_ITBL_SIZE
| otherwise = 0
\end{code}
\begin{code}
isStaticRep :: SMRep -> Bool
isStaticRep (GenericRep is_static _ _ _) = is_static
isStaticRep BlackHoleRep = False
\end{code}
\begin{code}
instance Outputable SMRep where
ppr rep = pprSMRep rep
pprSMRep :: SMRep -> SDoc
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 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"
cONSTR = (CONSTR :: Int)
cONSTR_1_0 = (CONSTR_1_0 :: Int)
cONSTR_0_1 = (CONSTR_0_1 :: Int)
cONSTR_2_0 = (CONSTR_2_0 :: Int)
cONSTR_1_1 = (CONSTR_1_1 :: Int)
cONSTR_0_2 = (CONSTR_0_2 :: Int)
cONSTR_STATIC = (CONSTR_STATIC :: Int)
cONSTR_NOCAF_STATIC = (CONSTR_NOCAF_STATIC :: Int)
fUN = (FUN :: Int)
fUN_1_0 = (FUN_1_0 :: Int)
fUN_0_1 = (FUN_0_1 :: Int)
fUN_2_0 = (FUN_2_0 :: Int)
fUN_1_1 = (FUN_1_1 :: Int)
fUN_0_2 = (FUN_0_2 :: Int)
fUN_STATIC = (FUN_STATIC :: Int)
tHUNK = (THUNK :: Int)
tHUNK_1_0 = (THUNK_1_0 :: Int)
tHUNK_0_1 = (THUNK_0_1 :: Int)
tHUNK_2_0 = (THUNK_2_0 :: Int)
tHUNK_1_1 = (THUNK_1_1 :: Int)
tHUNK_0_2 = (THUNK_0_2 :: 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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