2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
4 \section[SMRep]{Storage manager representations of closure}
6 This is here, rather than in ClosureInfo, just to keep nhc happy.
7 Other modules should access this info through ClosureInfo.
11 SMRep(..), ClosureType(..),
13 fixedHdrSize, arrWordsHdrSize, arrPtrsHdrSize,
14 fixedItblSize, pprSMRep
16 #ifndef OMIT_NATIVE_CODEGEN
17 , getSMRepClosureTypeInt
49 #include "HsVersions.h"
52 import Constants ( sTD_HDR_SIZE, pROF_HDR_SIZE,
53 gRAN_HDR_SIZE, tICKY_HDR_SIZE,
54 aRR_WORDS_HDR_SIZE, aRR_PTRS_HDR_SIZE,
55 sTD_ITBL_SIZE, pROF_ITBL_SIZE,
56 gRAN_ITBL_SIZE, tICKY_ITBL_SIZE )
60 %************************************************************************
62 \subsubsection[SMRep-datatype]{@SMRep@---storage manager representation}
64 %************************************************************************
68 -- static closure have an extra static link field at the end.
69 = GenericRep -- GC routines consult sizes in info tbl
70 Bool -- True <=> This is a static closure. Affects how
71 -- we garbage-collect it
73 Int -- # non-ptr words
74 ClosureType -- closure type
78 data ClosureType -- Corresponds 1-1 with the varieties of closures
79 -- implemented by the RTS. Compare with ghc/includes/ClosureTypes.h
81 | CONSTR_p_n -- The p_n variants have more efficient GC, but we
82 -- only provide them for dynamically-allocated closures
83 -- (We could do them for static ones, but we don't)
93 Size of a closure header.
96 fixedHdrSize :: Int{-words-}
97 fixedHdrSize = sTD_HDR_SIZE + profHdrSize + granHdrSize + tickyHdrSize
99 profHdrSize :: Int{-words-}
100 profHdrSize | opt_SccProfilingOn = pROF_HDR_SIZE
103 granHdrSize :: Int{-words-}
104 granHdrSize | opt_GranMacros = gRAN_HDR_SIZE
107 tickyHdrSize :: Int{-words-}
108 tickyHdrSize | opt_DoTickyProfiling = tICKY_HDR_SIZE
111 arrWordsHdrSize :: Int{-words-}
112 arrWordsHdrSize = fixedHdrSize + aRR_WORDS_HDR_SIZE
114 arrPtrsHdrSize :: Int{-words-}
115 arrPtrsHdrSize = fixedHdrSize + aRR_PTRS_HDR_SIZE
118 Size of an info table.
121 fixedItblSize :: Int{-words-}
122 fixedItblSize = sTD_ITBL_SIZE + profItblSize + granItblSize + tickyItblSize
124 profItblSize :: Int{-words-}
125 profItblSize | opt_SccProfilingOn = pROF_ITBL_SIZE
128 granItblSize :: Int{-words-}
129 granItblSize | opt_GranMacros = gRAN_ITBL_SIZE
132 tickyItblSize :: Int{-words-}
133 tickyItblSize | opt_DoTickyProfiling = tICKY_ITBL_SIZE
138 isStaticRep :: SMRep -> Bool
139 isStaticRep (GenericRep is_static _ _ _) = is_static
140 isStaticRep BlackHoleRep = False
144 instance Outputable SMRep where
145 ppr rep = pprSMRep rep
147 pprSMRep :: SMRep -> SDoc
148 pprSMRep (GenericRep True ptrs nptrs clo_ty) = pprClosureType clo_ty ptrs nptrs <> ptext SLIT("_STATIC")
149 pprSMRep (GenericRep False ptrs nptrs clo_ty) = pprClosureType clo_ty ptrs nptrs
151 pprClosureType CONSTR p n = ptext SLIT("CONSTR")
152 pprClosureType CONSTR_p_n p n = ptext SLIT("CONSTR_") <> int p <> char '_' <> int n
153 pprClosureType CONSTR_NOCAF p n = ptext SLIT("CONSTR_NOCAF")
154 pprClosureType FUN p n = ptext SLIT("FUN")
155 pprClosureType FUN_p_n p n = ptext SLIT("FUN_") <> int p <> char '_' <> int n
156 pprClosureType THUNK p n = ptext SLIT("THUNK")
157 pprClosureType THUNK_p_n p n = ptext SLIT("THUNK_") <> int p <> char '_' <> int n
158 pprClosureType THUNK_SELECTOR p n = ptext SLIT("THUNK_SELECTOR")
160 #ifndef OMIT_NATIVE_CODEGEN
161 getSMRepClosureTypeInt :: SMRep -> Int
162 getSMRepClosureTypeInt (GenericRep False _ _ CONSTR) = cONSTR
163 getSMRepClosureTypeInt (GenericRep False 1 0 CONSTR_p_n) = cONSTR_1_0
164 getSMRepClosureTypeInt (GenericRep False 0 1 CONSTR_p_n) = cONSTR_0_1
165 getSMRepClosureTypeInt (GenericRep False 2 0 CONSTR_p_n) = cONSTR_2_0
166 getSMRepClosureTypeInt (GenericRep False 1 1 CONSTR_p_n) = cONSTR_1_1
167 getSMRepClosureTypeInt (GenericRep False 0 2 CONSTR_p_n) = cONSTR_0_2
169 getSMRepClosureTypeInt (GenericRep False _ _ FUN) = fUN
170 getSMRepClosureTypeInt (GenericRep False 1 0 FUN_p_n) = fUN_1_0
171 getSMRepClosureTypeInt (GenericRep False 0 1 FUN_p_n) = fUN_0_1
172 getSMRepClosureTypeInt (GenericRep False 2 0 FUN_p_n) = fUN_2_0
173 getSMRepClosureTypeInt (GenericRep False 1 1 FUN_p_n) = fUN_1_1
174 getSMRepClosureTypeInt (GenericRep False 0 2 FUN_p_n) = fUN_0_2
176 getSMRepClosureTypeInt (GenericRep False _ _ THUNK) = tHUNK
177 getSMRepClosureTypeInt (GenericRep False 1 0 THUNK_p_n) = tHUNK_1_0
178 getSMRepClosureTypeInt (GenericRep False 0 1 THUNK_p_n) = tHUNK_0_1
179 getSMRepClosureTypeInt (GenericRep False 2 0 THUNK_p_n) = tHUNK_2_0
180 getSMRepClosureTypeInt (GenericRep False 1 1 THUNK_p_n) = tHUNK_1_1
181 getSMRepClosureTypeInt (GenericRep False 0 2 THUNK_p_n) = tHUNK_0_2
183 getSMRepClosureTypeInt (GenericRep False _ _ THUNK_SELECTOR) = tHUNK_SELECTOR
185 getSMRepClosureTypeInt (GenericRep True _ _ CONSTR) = cONSTR_STATIC
186 getSMRepClosureTypeInt (GenericRep True _ _ CONSTR_NOCAF) = cONSTR_NOCAF_STATIC
187 getSMRepClosureTypeInt (GenericRep True _ _ FUN) = fUN_STATIC
188 getSMRepClosureTypeInt (GenericRep True _ _ THUNK) = tHUNK_STATIC
190 getSMRepClosureTypeInt BlackHoleRep = bLACKHOLE
192 getSMRepClosureTypeInt rep = pprPanic "getSMRepClosureTypeInt:" (pprSMRep rep)
195 -- Just the ones we need:
197 #include "../includes/ClosureTypes.h"
199 cONSTR = (CONSTR :: Int)
200 cONSTR_1_0 = (CONSTR_1_0 :: Int)
201 cONSTR_0_1 = (CONSTR_0_1 :: Int)
202 cONSTR_2_0 = (CONSTR_2_0 :: Int)
203 cONSTR_1_1 = (CONSTR_1_1 :: Int)
204 cONSTR_0_2 = (CONSTR_0_2 :: Int)
205 cONSTR_STATIC = (CONSTR_STATIC :: Int)
206 cONSTR_NOCAF_STATIC = (CONSTR_NOCAF_STATIC :: Int)
208 fUN_1_0 = (FUN_1_0 :: Int)
209 fUN_0_1 = (FUN_0_1 :: Int)
210 fUN_2_0 = (FUN_2_0 :: Int)
211 fUN_1_1 = (FUN_1_1 :: Int)
212 fUN_0_2 = (FUN_0_2 :: Int)
213 fUN_STATIC = (FUN_STATIC :: Int)
214 tHUNK = (THUNK :: Int)
215 tHUNK_1_0 = (THUNK_1_0 :: Int)
216 tHUNK_0_1 = (THUNK_0_1 :: Int)
217 tHUNK_2_0 = (THUNK_2_0 :: Int)
218 tHUNK_1_1 = (THUNK_1_1 :: Int)
219 tHUNK_0_2 = (THUNK_0_2 :: Int)
220 tHUNK_STATIC = (THUNK_STATIC :: Int)
221 tHUNK_SELECTOR = (THUNK_SELECTOR :: Int)
222 rET_SMALL = (RET_SMALL :: Int)
223 rET_VEC_SMALL = (RET_VEC_SMALL :: Int)
224 rET_BIG = (RET_BIG :: Int)
225 rET_VEC_BIG = (RET_VEC_BIG :: Int)
226 bLACKHOLE = (BLACKHOLE :: Int)
228 #endif OMIT_NATIVE_CODEGEN