ghc-heap-9.13: Functions for walking GHC's heap
Safe HaskellNone
LanguageHaskell2010

GHC.Exts.Heap.Closures

Synopsis

Closures

data GenClosure b Source #

This is the representation of a Haskell value on the heap. It reflects https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/storage/Closures.h

The data type is parametrized by b: the type to store references in. Usually this is a Box with the type synonym Closure.

All Heap objects have the same basic layout. A header containing a pointer to the info table and a payload with various fields. The info field below always refers to the info table pointed to by the header. The remaining fields are the payload.

See https://gitlab.haskell.org/ghc/ghc/wikis/commentary/rts/storage/heap-objects for more information.

Constructors

ConstrClosure

A data constructor

Fields

FunClosure

A function

Fields

ThunkClosure

A thunk, an expression not obviously in head normal form

Fields

SelectorClosure

A thunk which performs a simple selection operation

Fields

PAPClosure

An unsaturated function application

Fields

APClosure

A function application

Fields

APStackClosure

A suspended thunk evaluation

Fields

IndClosure

A pointer to another closure, introduced when a thunk is updated to point at its value

Fields

BCOClosure

A byte-code object (BCO) which can be interpreted by GHC's byte-code interpreter (e.g. as used by GHCi)

Fields

  • info :: !StgInfoTable
     
  • instrs :: !b

    A pointer to an ArrWords of instructions

  • literals :: !b

    A pointer to an ArrWords of literals

  • bcoptrs :: !b

    A pointer to an ArrWords of byte code objects

  • arity :: !HalfWord

    Arity of the partial application

  • size :: !HalfWord

    The size of this BCO in words

  • bitmap :: ![Word]

    An StgLargeBitmap describing the pointerhood of its args/free vars

BlackholeClosure

A thunk under evaluation by another thread

Fields

ArrWordsClosure

A ByteArray#

Fields

MutArrClosure

A MutableByteArray#

Fields

SmallMutArrClosure

A SmallMutableArray#

Since: ghc-heap-8.10.1

Fields

MVarClosure

An MVar#, with a queue of thread state objects blocking on them

Fields

IOPortClosure

An IOPort#, with a queue of thread state objects blocking on them

Fields

MutVarClosure

A MutVar#

Fields

BlockingQueueClosure

An STM blocking queue.

Fields

WeakClosure 

Fields

TSOClosure

Representation of StgTSO: A Thread State Object. The values for what_next, why_blocked and flags are defined in Constants.h.

Fields

StackClosure

Representation of StgStack: The 'tsoStack ' of a TSOClosure.

Fields

IntClosure

Primitive Int

Fields

WordClosure

Primitive Word

Fields

Int64Closure

Primitive Int64

Fields

Word64Closure

Primitive Word64

Fields

AddrClosure

Primitive Addr

Fields

FloatClosure

Primitive Float

Fields

DoubleClosure

Primitive Double

Fields

OtherClosure

Another kind of closure

Fields

UnsupportedClosure 

Fields

UnknownTypeWordSizedPrimitive

A primitive word from a bitmap encoded stack frame payload

The type itself cannot be restored (i.e. it might represent a Word8# or an Int#).

Fields

Instances

Instances details
Functor GenClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fmap :: (a -> b) -> GenClosure a -> GenClosure b Source #

(<$) :: a -> GenClosure b -> GenClosure a Source #

Foldable GenClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fold :: Monoid m => GenClosure m -> m Source #

foldMap :: Monoid m => (a -> m) -> GenClosure a -> m Source #

foldMap' :: Monoid m => (a -> m) -> GenClosure a -> m Source #

foldr :: (a -> b -> b) -> b -> GenClosure a -> b Source #

foldr' :: (a -> b -> b) -> b -> GenClosure a -> b Source #

foldl :: (b -> a -> b) -> b -> GenClosure a -> b Source #

foldl' :: (b -> a -> b) -> b -> GenClosure a -> b Source #

foldr1 :: (a -> a -> a) -> GenClosure a -> a Source #

foldl1 :: (a -> a -> a) -> GenClosure a -> a Source #

toList :: GenClosure a -> [a] Source #

null :: GenClosure a -> Bool Source #

length :: GenClosure a -> Int Source #

elem :: Eq a => a -> GenClosure a -> Bool Source #

maximum :: Ord a => GenClosure a -> a Source #

minimum :: Ord a => GenClosure a -> a Source #

sum :: Num a => GenClosure a -> a Source #

product :: Num a => GenClosure a -> a Source #

Traversable GenClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

traverse :: Applicative f => (a -> f b) -> GenClosure a -> f (GenClosure b) Source #

sequenceA :: Applicative f => GenClosure (f a) -> f (GenClosure a) Source #

mapM :: Monad m => (a -> m b) -> GenClosure a -> m (GenClosure b) Source #

sequence :: Monad m => GenClosure (m a) -> m (GenClosure a) Source #

Generic (GenClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep (GenClosure b) 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenClosure b) = D1 ('MetaData "GenClosure" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((((C1 ('MetaCons "ConstrClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))) :*: (S1 ('MetaSel ('Just "pkg") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: (S1 ('MetaSel ('Just "modl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Just "name") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String)))) :+: (C1 ('MetaCons "FunClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))) :+: C1 ('MetaCons "ThunkClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: ((C1 ('MetaCons "SelectorClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "selectee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "PAPClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "arity") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord)) :*: (S1 ('MetaSel ('Just "n_args") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: (S1 ('MetaSel ('Just "fun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]))))) :+: (C1 ('MetaCons "APClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "arity") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord)) :*: (S1 ('MetaSel ('Just "n_args") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: (S1 ('MetaSel ('Just "fun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b])))) :+: C1 ('MetaCons "APStackClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just 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'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: S1 ('MetaSel ('Just "bitmap") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: (C1 ('MetaCons "BlackholeClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "indirectee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "ArrWordsClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "bytes") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word) :*: S1 ('MetaSel ('Just "arrWords") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: ((C1 ('MetaCons "MutArrClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "mccPtrs") 'NoSourceUnpackedness 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'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: C1 ('MetaCons "IOPortClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "queueHead") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "queueTail") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "value") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))))))) :+: (((C1 ('MetaCons "MutVarClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "var") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: (C1 ('MetaCons "BlockingQueueClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "blackHole") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: (S1 ('MetaSel ('Just "owner") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "queue") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))) :+: C1 ('MetaCons "WeakClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "cfinalizers") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "key") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :*: (S1 ('MetaSel ('Just "value") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: (S1 ('MetaSel ('Just "finalizer") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "weakLink") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe b))))))) :+: ((C1 ('MetaCons "TSOClosure" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "global_link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "tsoStack") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :*: ((S1 ('MetaSel ('Just "trec") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "blocked_exceptions") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "bq") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "thread_label") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe b))))) :*: (((S1 ('MetaSel ('Just "what_next") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 WhatNext) :*: S1 ('MetaSel ('Just "why_blocked") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 WhyBlocked)) :*: (S1 ('MetaSel ('Just "flags") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [TsoFlags]) :*: S1 ('MetaSel ('Just "threadId") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word64))) :*: ((S1 ('MetaSel ('Just "saved_errno") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "tso_dirty") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "alloc_limit") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int64) :*: (S1 ('MetaSel ('Just "tot_stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "prof") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe StgTSOProfInfo))))))) :+: C1 ('MetaCons "StackClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "stack_dirty") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word8) :*: S1 ('MetaSel ('Just "stack_marking") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word8)))) :+: (C1 ('MetaCons "IntClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "intVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int)) :+: C1 ('MetaCons "WordClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "wordVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word))))) :+: (((C1 ('MetaCons "Int64Closure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "int64Val") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int64)) :+: C1 ('MetaCons "Word64Closure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "word64Val") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word64))) :+: (C1 ('MetaCons "AddrClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "addrVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Ptr ()))) :+: C1 ('MetaCons "FloatClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "floatVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Float)))) :+: ((C1 ('MetaCons "DoubleClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "doubleVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Double)) :+: C1 ('MetaCons "OtherClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "hvalues") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "rawWords") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word])))) :+: (C1 ('MetaCons "UnsupportedClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable)) :+: C1 ('MetaCons "UnknownTypeWordSizedPrimitive" 'PrefixI 'True) (S1 ('MetaSel ('Just "wordVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)))))))

Methods

from :: GenClosure b -> Rep (GenClosure b) x Source #

to :: Rep (GenClosure b) x -> GenClosure b Source #

Show b => Show (GenClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenClosure b) = D1 ('MetaData "GenClosure" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((((C1 ('MetaCons "ConstrClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))) :*: (S1 ('MetaSel ('Just "pkg") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: (S1 ('MetaSel ('Just "modl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Just "name") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String)))) :+: (C1 ('MetaCons "FunClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))) :+: C1 ('MetaCons "ThunkClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ptrArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "dataArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: ((C1 ('MetaCons "SelectorClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "selectee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "PAPClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "arity") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord)) :*: (S1 ('MetaSel ('Just "n_args") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: (S1 ('MetaSel ('Just "fun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]))))) :+: (C1 ('MetaCons "APClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "arity") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord)) :*: (S1 ('MetaSel ('Just "n_args") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: (S1 ('MetaSel ('Just "fun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b])))) :+: C1 ('MetaCons "APStackClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "fun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b])))))) :+: (((C1 ('MetaCons "IndClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "indirectee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "BCOClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "instrs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "literals") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :*: ((S1 ('MetaSel ('Just "bcoptrs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "arity") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord)) :*: (S1 ('MetaSel ('Just "size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HalfWord) :*: S1 ('MetaSel ('Just "bitmap") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: (C1 ('MetaCons "BlackholeClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "indirectee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "ArrWordsClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "bytes") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word) :*: S1 ('MetaSel ('Just "arrWords") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word]))))) :+: ((C1 ('MetaCons "MutArrClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "mccPtrs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "mccSize") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word) :*: S1 ('MetaSel ('Just "mccPayload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]))) :+: C1 ('MetaCons "SmallMutArrClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "mccPtrs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word) :*: S1 ('MetaSel ('Just "mccPayload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b])))) :+: (C1 ('MetaCons "MVarClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "queueHead") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "queueTail") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "value") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: C1 ('MetaCons "IOPortClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "queueHead") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "queueTail") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "value") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))))))) :+: (((C1 ('MetaCons "MutVarClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "var") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: (C1 ('MetaCons "BlockingQueueClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "blackHole") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: (S1 ('MetaSel ('Just "owner") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "queue") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))) :+: C1 ('MetaCons "WeakClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "cfinalizers") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "key") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :*: (S1 ('MetaSel ('Just "value") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: (S1 ('MetaSel ('Just "finalizer") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "weakLink") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe b))))))) :+: ((C1 ('MetaCons "TSOClosure" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "global_link") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "tsoStack") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :*: ((S1 ('MetaSel ('Just "trec") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "blocked_exceptions") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :*: (S1 ('MetaSel ('Just "bq") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "thread_label") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe b))))) :*: (((S1 ('MetaSel ('Just "what_next") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 WhatNext) :*: S1 ('MetaSel ('Just "why_blocked") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 WhyBlocked)) :*: (S1 ('MetaSel ('Just "flags") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [TsoFlags]) :*: S1 ('MetaSel ('Just "threadId") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word64))) :*: ((S1 ('MetaSel ('Just "saved_errno") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "tso_dirty") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "alloc_limit") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int64) :*: (S1 ('MetaSel ('Just "tot_stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "prof") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe StgTSOProfInfo))))))) :+: C1 ('MetaCons "StackClosure" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "stack_dirty") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word8) :*: S1 ('MetaSel ('Just "stack_marking") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word8)))) :+: (C1 ('MetaCons "IntClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "intVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int)) :+: C1 ('MetaCons "WordClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "wordVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word))))) :+: (((C1 ('MetaCons "Int64Closure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "int64Val") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int64)) :+: C1 ('MetaCons "Word64Closure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "word64Val") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word64))) :+: (C1 ('MetaCons "AddrClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "addrVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Ptr ()))) :+: C1 ('MetaCons "FloatClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "floatVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Float)))) :+: ((C1 ('MetaCons "DoubleClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ptipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 PrimType) :*: S1 ('MetaSel ('Just "doubleVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Double)) :+: C1 ('MetaCons "OtherClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "hvalues") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [b]) :*: S1 ('MetaSel ('Just "rawWords") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [Word])))) :+: (C1 ('MetaCons "UnsupportedClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable)) :+: C1 ('MetaCons "UnknownTypeWordSizedPrimitive" 'PrefixI 'True) (S1 ('MetaSel ('Just "wordVal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)))))))

data PrimType Source #

Instances

Instances details
Generic PrimType Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep PrimType 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep PrimType = D1 ('MetaData "PrimType" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((C1 ('MetaCons "PInt" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PWord" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PInt64" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PWord64" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PAddr" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PFloat" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PDouble" 'PrefixI 'False) (U1 :: Type -> Type))))
Show PrimType Source # 
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Defined in GHC.Exts.Heap.Closures

Eq PrimType Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Ord PrimType Source # 
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Defined in GHC.Exts.Heap.Closures

type Rep PrimType Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep PrimType = D1 ('MetaData "PrimType" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((C1 ('MetaCons "PInt" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PWord" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PInt64" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PWord64" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PAddr" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PFloat" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PDouble" 'PrefixI 'False) (U1 :: Type -> Type))))

data WhatNext Source #

Instances

Instances details
Generic WhatNext Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep WhatNext 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhatNext = D1 ('MetaData "WhatNext" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((C1 ('MetaCons "ThreadRunGHC" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ThreadInterpret" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ThreadKilled" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "ThreadComplete" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WhatNextUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))))
Show WhatNext Source # 
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Defined in GHC.Exts.Heap.Closures

Eq WhatNext Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Ord WhatNext Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhatNext Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhatNext = D1 ('MetaData "WhatNext" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) ((C1 ('MetaCons "ThreadRunGHC" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ThreadInterpret" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ThreadKilled" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "ThreadComplete" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WhatNextUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))))

data WhyBlocked Source #

Instances

Instances details
Generic WhyBlocked Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep WhyBlocked 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhyBlocked = D1 ('MetaData "WhyBlocked" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "NotBlocked" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "BlockedOnMVar" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnMVarRead" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "BlockedOnBlackHole" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnRead" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "BlockedOnWrite" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnDelay" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: ((C1 ('MetaCons "BlockedOnSTM" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "BlockedOnDoProc" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnCCall" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "BlockedOnCCall_Interruptible" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnMsgThrowTo" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ThreadMigrating" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WhyBlockedUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16))))))
Show WhyBlocked Source # 
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Defined in GHC.Exts.Heap.Closures

Eq WhyBlocked Source # 
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Defined in GHC.Exts.Heap.Closures

Ord WhyBlocked Source # 
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Defined in GHC.Exts.Heap.Closures

type Rep WhyBlocked Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhyBlocked = D1 ('MetaData "WhyBlocked" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "NotBlocked" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "BlockedOnMVar" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnMVarRead" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "BlockedOnBlackHole" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnRead" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "BlockedOnWrite" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnDelay" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: ((C1 ('MetaCons "BlockedOnSTM" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "BlockedOnDoProc" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnCCall" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "BlockedOnCCall_Interruptible" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BlockedOnMsgThrowTo" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ThreadMigrating" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WhyBlockedUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16))))))

data TsoFlags Source #

Instances

Instances details
Generic TsoFlags Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep TsoFlags 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep TsoFlags = D1 ('MetaData "TsoFlags" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "TsoLocked" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoBlockx" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "TsoInterruptible" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoStoppedOnBreakpoint" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "TsoMarked" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoSqueezed" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "TsoAllocLimit" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoFlagsUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))))
Show TsoFlags Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Eq TsoFlags Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Ord TsoFlags Source # 
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Defined in GHC.Exts.Heap.Closures

type Rep TsoFlags Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep TsoFlags = D1 ('MetaData "TsoFlags" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "TsoLocked" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoBlockx" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "TsoInterruptible" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoStoppedOnBreakpoint" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "TsoMarked" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoSqueezed" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "TsoAllocLimit" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TsoFlagsUnknownValue" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))))

allClosures :: GenClosure b -> [b] Source #

For generic code, this function returns all referenced closures.

closureSize :: Box -> Int Source #

Get the size of the top-level closure in words. Includes header and payload. Does not follow pointers.

Since: ghc-heap-8.10.1

Stack

data GenStgStackClosure b Source #

A decoded StgStack with StackFrames

Stack related data structures (GenStgStackClosure, GenStackField, GenStackFrame) are defined separately from GenClosure as their related functions are very different. Though, both are closures in the sense of RTS structures, their decoding logic differs: While it's safe to keep a reference to a heap closure, the garbage collector does not update references to stack located closures.

Additionally, stack frames don't appear outside of the stack. Thus, keeping GenStackFrame and GenClosure separated, makes these types more precise (in the sense what values to expect.)

Constructors

GenStgStackClosure 

Fields

Instances

Instances details
Functor GenStgStackClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Foldable GenStgStackClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fold :: Monoid m => GenStgStackClosure m -> m Source #

foldMap :: Monoid m => (a -> m) -> GenStgStackClosure a -> m Source #

foldMap' :: Monoid m => (a -> m) -> GenStgStackClosure a -> m Source #

foldr :: (a -> b -> b) -> b -> GenStgStackClosure a -> b Source #

foldr' :: (a -> b -> b) -> b -> GenStgStackClosure a -> b Source #

foldl :: (b -> a -> b) -> b -> GenStgStackClosure a -> b Source #

foldl' :: (b -> a -> b) -> b -> GenStgStackClosure a -> b Source #

foldr1 :: (a -> a -> a) -> GenStgStackClosure a -> a Source #

foldl1 :: (a -> a -> a) -> GenStgStackClosure a -> a Source #

toList :: GenStgStackClosure a -> [a] Source #

null :: GenStgStackClosure a -> Bool Source #

length :: GenStgStackClosure a -> Int Source #

elem :: Eq a => a -> GenStgStackClosure a -> Bool Source #

maximum :: Ord a => GenStgStackClosure a -> a Source #

minimum :: Ord a => GenStgStackClosure a -> a Source #

sum :: Num a => GenStgStackClosure a -> a Source #

product :: Num a => GenStgStackClosure a -> a Source #

Traversable GenStgStackClosure Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Generic (GenStgStackClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep (GenStgStackClosure b) 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStgStackClosure b) = D1 ('MetaData "GenStgStackClosure" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (C1 ('MetaCons "GenStgStackClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ssc_info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ssc_stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "ssc_stack") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackFrame b]))))
Show b => Show (GenStgStackClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStgStackClosure b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStgStackClosure b) = D1 ('MetaData "GenStgStackClosure" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (C1 ('MetaCons "GenStgStackClosure" 'PrefixI 'True) (S1 ('MetaSel ('Just "ssc_info") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "ssc_stack_size") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word32) :*: S1 ('MetaSel ('Just "ssc_stack") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackFrame b]))))

data GenStackFrame b Source #

A single stack frame

Instances

Instances details
Functor GenStackFrame Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fmap :: (a -> b) -> GenStackFrame a -> GenStackFrame b Source #

(<$) :: a -> GenStackFrame b -> GenStackFrame a Source #

Foldable GenStackFrame Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fold :: Monoid m => GenStackFrame m -> m Source #

foldMap :: Monoid m => (a -> m) -> GenStackFrame a -> m Source #

foldMap' :: Monoid m => (a -> m) -> GenStackFrame a -> m Source #

foldr :: (a -> b -> b) -> b -> GenStackFrame a -> b Source #

foldr' :: (a -> b -> b) -> b -> GenStackFrame a -> b Source #

foldl :: (b -> a -> b) -> b -> GenStackFrame a -> b Source #

foldl' :: (b -> a -> b) -> b -> GenStackFrame a -> b Source #

foldr1 :: (a -> a -> a) -> GenStackFrame a -> a Source #

foldl1 :: (a -> a -> a) -> GenStackFrame a -> a Source #

toList :: GenStackFrame a -> [a] Source #

null :: GenStackFrame a -> Bool Source #

length :: GenStackFrame a -> Int Source #

elem :: Eq a => a -> GenStackFrame a -> Bool Source #

maximum :: Ord a => GenStackFrame a -> a Source #

minimum :: Ord a => GenStackFrame a -> a Source #

sum :: Num a => GenStackFrame a -> a Source #

product :: Num a => GenStackFrame a -> a Source #

Traversable GenStackFrame Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

traverse :: Applicative f => (a -> f b) -> GenStackFrame a -> f (GenStackFrame b) Source #

sequenceA :: Applicative f => GenStackFrame (f a) -> f (GenStackFrame a) Source #

mapM :: Monad m => (a -> m b) -> GenStackFrame a -> m (GenStackFrame b) Source #

sequence :: Monad m => GenStackFrame (m a) -> m (GenStackFrame a) Source #

Generic (GenStackFrame b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep (GenStackFrame b) 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackFrame b) = D1 ('MetaData "GenStackFrame" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "UpdateFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "updatee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "CatchFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "handler") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: (C1 ('MetaCons "CatchStmFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "catchFrameCode") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "handler") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: (C1 ('MetaCons "CatchRetryFrame" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "running_alt_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "first_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "alt_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: C1 ('MetaCons "AtomicallyFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "atomicallyFrameCode") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "result") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))))) :+: ((C1 ('MetaCons "UnderflowFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "nextChunk") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (GenStgStackClosure b))) :+: (C1 ('MetaCons "StopFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable)) :+: C1 ('MetaCons "RetSmall" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])))) :+: (C1 ('MetaCons "RetBig" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])) :+: (C1 ('MetaCons "RetFun" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "retFunSize") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "retFunFun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "retFunPayload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b]))) :+: C1 ('MetaCons "RetBCO" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "bco") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "bcoArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])))))))
Show b => Show (GenStackFrame b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackFrame b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackFrame b) = D1 ('MetaData "GenStackFrame" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (((C1 ('MetaCons "UpdateFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "updatee") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)) :+: C1 ('MetaCons "CatchFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "handler") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: (C1 ('MetaCons "CatchStmFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "catchFrameCode") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "handler") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: (C1 ('MetaCons "CatchRetryFrame" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "running_alt_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "first_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "alt_code") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b))) :+: C1 ('MetaCons "AtomicallyFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "atomicallyFrameCode") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "result") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))))) :+: ((C1 ('MetaCons "UnderflowFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "nextChunk") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (GenStgStackClosure b))) :+: (C1 ('MetaCons "StopFrame" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable)) :+: C1 ('MetaCons "RetSmall" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])))) :+: (C1 ('MetaCons "RetBig" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "stack_payload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])) :+: (C1 ('MetaCons "RetFun" 'PrefixI 'True) ((S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: S1 ('MetaSel ('Just "retFunSize") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "retFunFun") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "retFunPayload") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b]))) :+: C1 ('MetaCons "RetBCO" 'PrefixI 'True) (S1 ('MetaSel ('Just "info_tbl") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StgInfoTable) :*: (S1 ('MetaSel ('Just "bco") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b) :*: S1 ('MetaSel ('Just "bcoArgs") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [GenStackField b])))))))

data GenStackField b Source #

Bitmap-encoded payload on the stack

Constructors

StackWord !Word

A non-pointer field

StackBox !b

A pointer field

Instances

Instances details
Functor GenStackField Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fmap :: (a -> b) -> GenStackField a -> GenStackField b Source #

(<$) :: a -> GenStackField b -> GenStackField a Source #

Foldable GenStackField Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

fold :: Monoid m => GenStackField m -> m Source #

foldMap :: Monoid m => (a -> m) -> GenStackField a -> m Source #

foldMap' :: Monoid m => (a -> m) -> GenStackField a -> m Source #

foldr :: (a -> b -> b) -> b -> GenStackField a -> b Source #

foldr' :: (a -> b -> b) -> b -> GenStackField a -> b Source #

foldl :: (b -> a -> b) -> b -> GenStackField a -> b Source #

foldl' :: (b -> a -> b) -> b -> GenStackField a -> b Source #

foldr1 :: (a -> a -> a) -> GenStackField a -> a Source #

foldl1 :: (a -> a -> a) -> GenStackField a -> a Source #

toList :: GenStackField a -> [a] Source #

null :: GenStackField a -> Bool Source #

length :: GenStackField a -> Int Source #

elem :: Eq a => a -> GenStackField a -> Bool Source #

maximum :: Ord a => GenStackField a -> a Source #

minimum :: Ord a => GenStackField a -> a Source #

sum :: Num a => GenStackField a -> a Source #

product :: Num a => GenStackField a -> a Source #

Traversable GenStackField Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Methods

traverse :: Applicative f => (a -> f b) -> GenStackField a -> f (GenStackField b) Source #

sequenceA :: Applicative f => GenStackField (f a) -> f (GenStackField a) Source #

mapM :: Monad m => (a -> m b) -> GenStackField a -> m (GenStackField b) Source #

sequence :: Monad m => GenStackField (m a) -> m (GenStackField a) Source #

Generic (GenStackField b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Associated Types

type Rep (GenStackField b) 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackField b) = D1 ('MetaData "GenStackField" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (C1 ('MetaCons "StackWord" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :+: C1 ('MetaCons "StackBox" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))
Show b => Show (GenStackField b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackField b) Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

type Rep (GenStackField b) = D1 ('MetaData "GenStackField" "GHC.Exts.Heap.Closures" "ghc-heap-9.13-inplace" 'False) (C1 ('MetaCons "StackWord" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :+: C1 ('MetaCons "StackBox" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 b)))

Boxes

data Box Source #

An arbitrary Haskell value in a safe Box. The point is that even unevaluated thunks can safely be moved around inside the Box, and when required, e.g. in getBoxedClosureData, the function knows how far it has to evaluate the argument.

Constructors

Box (Any :: Type) 

Instances

Instances details
Show Box Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

areBoxesEqual :: Box -> Box -> IO Bool Source #

Boxes can be compared, but this is not pure, as different heap objects can, after garbage collection, become the same object.

asBox :: a -> Box Source #

This takes an arbitrary value and puts it into a box. Note that calls like

asBox (head list)

will put the thunk "head list" into the box, not the element at the head of the list. For that, use careful case expressions:

case list of x:_ -> asBox x