ghc-heap-9.6.3: Functions for walking GHC's heap

Copyright | (c) 2012 Joachim Breitner
License | BSD3
Maintainer | Joachim Breitner <mail@joachim-breitner.de>
Safe Haskell | Safe-Inferred
Language | Haskell2010

GHC.Exts.Heap

Contents

- Closure types
- Info Table types
- Cost Centre (profiling) types
- Closure inspection
- Boxes

Description

With this module, you can investigate the heap representation of Haskell values, i.e. to investigate sharing and lazy evaluation.

Synopsis

- type Closure = GenClosure Box
- data GenClosure b
  - = ConstrClosure {
    - info :: !StgInfoTable
    - ptrArgs :: ![b]
    - dataArgs :: ![Word]
    - pkg :: !String
    - modl :: !String
    - name :: !String
    }
  - | FunClosure {
    - info :: !StgInfoTable
    - ptrArgs :: ![b]
    - dataArgs :: ![Word]
    }
  - | ThunkClosure {
    - info :: !StgInfoTable
    - ptrArgs :: ![b]
    - dataArgs :: ![Word]
    }
  - | SelectorClosure {
    - info :: !StgInfoTable
    - selectee :: !b
    }
  - | PAPClosure {
    - info :: !StgInfoTable
    - arity :: !HalfWord
    - n_args :: !HalfWord
    - fun :: !b
    - payload :: ![b]
    }
  - | APClosure {
    - info :: !StgInfoTable
    - arity :: !HalfWord
    - n_args :: !HalfWord
    - fun :: !b
    - payload :: ![b]
    }
  - | APStackClosure {
    - info :: !StgInfoTable
    - fun :: !b
    - payload :: ![b]
    }
  - | IndClosure {
    - info :: !StgInfoTable
    - indirectee :: !b
    }
  - | BCOClosure {
    - info :: !StgInfoTable
    - instrs :: !b
    - literals :: !b
    - bcoptrs :: !b
    - arity :: !HalfWord
    - size :: !HalfWord
    - bitmap :: ![Word]
    }
  - | BlackholeClosure {
    - info :: !StgInfoTable
    - indirectee :: !b
    }
  - | ArrWordsClosure {
    - info :: !StgInfoTable
    - bytes :: !Word
    - arrWords :: ![Word]
    }
  - | MutArrClosure {
    - info :: !StgInfoTable
    - mccPtrs :: !Word
    - mccSize :: !Word
    - mccPayload :: ![b]
    }
  - | SmallMutArrClosure {
    - info :: !StgInfoTable
    - mccPtrs :: !Word
    - mccPayload :: ![b]
    }
  - | MVarClosure {
    - info :: !StgInfoTable
    - queueHead :: !b
    - queueTail :: !b
    - value :: !b
    }
  - | IOPortClosure {
    - info :: !StgInfoTable
    - queueHead :: !b
    - queueTail :: !b
    - value :: !b
    }
  - | MutVarClosure {
    - info :: !StgInfoTable
    - var :: !b
    }
  - | BlockingQueueClosure {
    - info :: !StgInfoTable
    - link :: !b
    - blackHole :: !b
    - owner :: !b
    - queue :: !b
    }
  - | WeakClosure {
    - info :: !StgInfoTable
    - cfinalizers :: !b
    - key :: !b
    - value :: !b
    - finalizer :: !b
    - weakLink :: !(Maybe b)
    }
  - | TSOClosure {
    - info :: !StgInfoTable
    - link :: !b
    - global_link :: !b
    - tsoStack :: !b
    - trec :: !b
    - blocked_exceptions :: !b
    - bq :: !b
    - thread_label :: !(Maybe b)
    - what_next :: !WhatNext
    - why_blocked :: !WhyBlocked
    - flags :: ![TsoFlags]
    - threadId :: !Word64
    - saved_errno :: !Word32
    - tso_dirty :: !Word32
    - alloc_limit :: !Int64
    - tot_stack_size :: !Word32
    - prof :: !(Maybe StgTSOProfInfo)
    }
  - | StackClosure {
    - info :: !StgInfoTable
    - stack_size :: !Word32
    - stack_dirty :: !Word8
    - stack_marking :: !Word8
    }
  - | IntClosure {
    - ptipe :: PrimType
    - intVal :: !Int
    }
  - | WordClosure {
    - ptipe :: PrimType
    - wordVal :: !Word
    }
  - | Int64Closure {
    - ptipe :: PrimType
    - int64Val :: !Int64
    }
  - | Word64Closure {
    - ptipe :: PrimType
    - word64Val :: !Word64
    }
  - | AddrClosure {
    - ptipe :: PrimType
    - addrVal :: !Int
    }
  - | FloatClosure {
    - ptipe :: PrimType
    - floatVal :: !Float
    }
  - | DoubleClosure {
    - ptipe :: PrimType
    - doubleVal :: !Double
    }
  - | OtherClosure {
    - info :: !StgInfoTable
    - hvalues :: ![b]
    - rawWords :: ![Word]
    }
  - | UnsupportedClosure {
    - info :: !StgInfoTable
    }
- data ClosureType
  - = INVALID_OBJECT
  - | CONSTR
  - | CONSTR_1_0
  - | CONSTR_0_1
  - | CONSTR_2_0
  - | CONSTR_1_1
  - | CONSTR_0_2
  - | CONSTR_NOCAF
  - | 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
  - | BCO
  - | AP
  - | PAP
  - | AP_STACK
  - | IND
  - | IND_STATIC
  - | RET_BCO
  - | RET_SMALL
  - | RET_BIG
  - | RET_FUN
  - | UPDATE_FRAME
  - | CATCH_FRAME
  - | UNDERFLOW_FRAME
  - | STOP_FRAME
  - | BLOCKING_QUEUE
  - | BLACKHOLE
  - | MVAR_CLEAN
  - | MVAR_DIRTY
  - | TVAR
  - | ARR_WORDS
  - | MUT_ARR_PTRS_CLEAN
  - | MUT_ARR_PTRS_DIRTY
  - | MUT_ARR_PTRS_FROZEN_DIRTY
  - | MUT_ARR_PTRS_FROZEN_CLEAN
  - | MUT_VAR_CLEAN
  - | MUT_VAR_DIRTY
  - | WEAK
  - | PRIM
  - | MUT_PRIM
  - | TSO
  - | STACK
  - | TREC_CHUNK
  - | ATOMICALLY_FRAME
  - | CATCH_RETRY_FRAME
  - | CATCH_STM_FRAME
  - | WHITEHOLE
  - | SMALL_MUT_ARR_PTRS_CLEAN
  - | SMALL_MUT_ARR_PTRS_DIRTY
  - | SMALL_MUT_ARR_PTRS_FROZEN_DIRTY
  - | SMALL_MUT_ARR_PTRS_FROZEN_CLEAN
  - | COMPACT_NFDATA
  - | CONTINUATION
  - | N_CLOSURE_TYPES
- data PrimType
  - = PInt
  - | PWord
  - | PInt64
  - | PWord64
  - | PAddr
  - | PFloat
  - | PDouble
- data WhatNext
  - = ThreadRunGHC
  - | ThreadInterpret
  - | ThreadKilled
  - | ThreadComplete
  - | WhatNextUnknownValue Word16
- data WhyBlocked
  - = NotBlocked
  - | BlockedOnMVar
  - | BlockedOnMVarRead
  - | BlockedOnBlackHole
  - | BlockedOnRead
  - | BlockedOnWrite
  - | BlockedOnDelay
  - | BlockedOnSTM
  - | BlockedOnDoProc
  - | BlockedOnCCall
  - | BlockedOnCCall_Interruptible
  - | BlockedOnMsgThrowTo
  - | ThreadMigrating
  - | WhyBlockedUnknownValue Word16
- data TsoFlags
  - = TsoLocked
  - | TsoBlockx
  - | TsoInterruptible
  - | TsoStoppedOnBreakpoint
  - | TsoMarked
  - | TsoSqueezed
  - | TsoAllocLimit
  - | TsoFlagsUnknownValue Word32
- class HasHeapRep (a :: TYPE rep) where
  - getClosureData :: a -> IO Closure
- getClosureDataFromHeapRep :: ByteArray# -> Ptr StgInfoTable -> [b] -> IO (GenClosure b)
- getClosureDataFromHeapRepPrim :: IO (String, String, String) -> (Ptr a -> IO (Maybe CostCentreStack)) -> StgInfoTable -> ByteArray# -> [b] -> IO (GenClosure b)
- data StgInfoTable = StgInfoTable {
  - entry :: Maybe EntryFunPtr
  - ptrs :: HalfWord
  - nptrs :: HalfWord
  - tipe :: ClosureType
  - srtlen :: HalfWord
  - code :: Maybe ItblCodes
  }
- type EntryFunPtr = FunPtr (Ptr () -> IO (Ptr ()))
- type HalfWord = Word32
- type ItblCodes = Either [Word8] [Word32]
- itblSize :: Int
- peekItbl :: Ptr StgInfoTable -> IO StgInfoTable
- pokeItbl :: Ptr StgInfoTable -> StgInfoTable -> IO ()
- newtype StgTSOProfInfo = StgTSOProfInfo {
  - cccs :: Maybe CostCentreStack
  }
- data IndexTable = IndexTable {
  - it_cc :: CostCentre
  - it_ccs :: Maybe CostCentreStack
  - it_next :: Maybe IndexTable
  - it_back_edge :: Bool
  }
- data CostCentre = CostCentre {
  - cc_ccID :: Int
  - cc_label :: String
  - cc_module :: String
  - cc_srcloc :: Maybe String
  - cc_mem_alloc :: Word64
  - cc_time_ticks :: Word
  - cc_is_caf :: Bool
  - cc_link :: Maybe CostCentre
  }
- data CostCentreStack = CostCentreStack {
  - ccs_ccsID :: Int
  - ccs_cc :: CostCentre
  - ccs_prevStack :: Maybe CostCentreStack
  - ccs_indexTable :: Maybe IndexTable
  - ccs_root :: Maybe CostCentreStack
  - ccs_depth :: Word
  - ccs_scc_count :: Word64
  - ccs_selected :: Word
  - ccs_time_ticks :: Word
  - ccs_mem_alloc :: Word64
  - ccs_inherited_alloc :: Word64
  - ccs_inherited_ticks :: Word
  }
- getBoxedClosureData :: Box -> IO Closure
- allClosures :: GenClosure b -> [b]
- data Box = Box Any
- asBox :: a -> Box
- areBoxesEqual :: Box -> Box -> IO Bool

# Closure types

type Closure = GenClosure Box Source #

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

- info :: !StgInfoTable
- ptrArgs :: ![b]

  Pointer arguments

- dataArgs :: ![Word]

  Non-pointer arguments

- pkg :: !String

  Package name

- modl :: !String

  Module name

- name :: !String

  Constructor name

FunClosure | A function

Fields

- info :: !StgInfoTable
- ptrArgs :: ![b]

  Pointer arguments

- dataArgs :: ![Word]

  Non-pointer arguments

ThunkClosure | A thunk, an expression not obviously in head normal form

Fields

- info :: !StgInfoTable
- ptrArgs :: ![b]

  Pointer arguments

- dataArgs :: ![Word]

  Non-pointer arguments

SelectorClosure | A thunk which performs a simple selection operation

Fields

- info :: !StgInfoTable
- selectee :: !b

  Pointer to the object being selected from

PAPClosure | An unsaturated function application

Fields

- info :: !StgInfoTable
- arity :: !HalfWord

  Arity of the partial application

- n_args :: !HalfWord

  Size of the payload in words

- fun :: !b

  Pointer to a `FunClosure`

- payload :: ![b]

  Sequence of already applied arguments

APClosure | A function application

Fields

- info :: !StgInfoTable
- arity :: !HalfWord

  Arity of the partial application

- n_args :: !HalfWord

  Size of the payload in words

- fun :: !b

  Pointer to a `FunClosure`

- payload :: ![b]

  Sequence of already applied arguments

APStackClosure | A suspended thunk evaluation

Fields

- info :: !StgInfoTable
- fun :: !b

  Pointer to a `FunClosure`

- payload :: ![b]

  Sequence of already applied arguments

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

Fields

- info :: !StgInfoTable
- indirectee :: !b

  Target closure

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

- info :: !StgInfoTable
- indirectee :: !b

  Target closure

ArrWordsClosure | A `ByteArray#`

Fields

- info :: !StgInfoTable
- bytes :: !Word

  Size of array in bytes

- arrWords :: ![Word]

  Array payload

MutArrClosure | A `MutableByteArray#`

Fields

- info :: !StgInfoTable
- mccPtrs :: !Word

  Number of pointers

- mccSize :: !Word

  ?? Closures.h vs ClosureMacros.h

- mccPayload :: ![b]

  Array payload Card table ignored

SmallMutArrClosure | A `SmallMutableArray#` Since: ghc-heap-8.10.1

Fields

- info :: !StgInfoTable
- mccPtrs :: !Word

  Number of pointers

- mccPayload :: ![b]

  Array payload Card table ignored

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

Fields

- info :: !StgInfoTable
- queueHead :: !b

  Pointer to head of queue

- queueTail :: !b

  Pointer to tail of queue

- value :: !b

  Pointer to closure

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

Fields

- info :: !StgInfoTable
- queueHead :: !b

  Pointer to head of queue

- queueTail :: !b

  Pointer to tail of queue

- value :: !b

  Pointer to closure

MutVarClosure | A `MutVar#`

Fields

- info :: !StgInfoTable
- var :: !b

  Pointer to contents

BlockingQueueClosure | An STM blocking queue.

Fields

- info :: !StgInfoTable
- link :: !b

  ?? Here so it looks like an IND

- blackHole :: !b

  The blackhole closure

- owner :: !b

  The owning thread state object

- queue :: !b

  ??

WeakClosure |

Fields

- info :: !StgInfoTable
- cfinalizers :: !b
- key :: !b
- value :: !b

  Pointer to closure

- finalizer :: !b
- weakLink :: !(Maybe b)

  next weak pointer for the capability

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

Fields

- info :: !StgInfoTable
- link :: !b

  ?? Here so it looks like an IND

- global_link :: !b
- tsoStack :: !b

  stackobj from StgTSO

- trec :: !b
- blocked_exceptions :: !b
- bq :: !b
- thread_label :: !(Maybe b)
- what_next :: !WhatNext
- why_blocked :: !WhyBlocked
- flags :: ![TsoFlags]
- threadId :: !Word64
- saved_errno :: !Word32
- tso_dirty :: !Word32

  non-zero => dirty

- alloc_limit :: !Int64
- tot_stack_size :: !Word32
- prof :: !(Maybe StgTSOProfInfo)

StackClosure | Representation of StgStack: The 'tsoStack ' of a `TSOClosure`.

Fields

- info :: !StgInfoTable
- stack_size :: !Word32

  stack size in *words*

- stack_dirty :: !Word8

  non-zero => dirty

- stack_marking :: !Word8

IntClosure | Primitive Int

Fields

- ptipe :: PrimType
- intVal :: !Int

WordClosure | Primitive Word

Fields

- ptipe :: PrimType
- wordVal :: !Word

Int64Closure | Primitive Int64

Fields

- ptipe :: PrimType
- int64Val :: !Int64

Word64Closure | Primitive Word64

Fields

- ptipe :: PrimType
- word64Val :: !Word64

AddrClosure | Primitive Addr

Fields

- ptipe :: PrimType
- addrVal :: !Int

FloatClosure | Primitive Float

Fields

- ptipe :: PrimType
- floatVal :: !Float

DoubleClosure | Primitive Double

Fields

- ptipe :: PrimType
- doubleVal :: !Double

OtherClosure | Another kind of closure

Fields

- info :: !StgInfoTable
- hvalues :: ![b]
- rawWords :: ![Word]

UnsupportedClosure |

Fields

- info :: !StgInfoTable

#### Instances

Instances details

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 #
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 #
Generic (GenClosure b) Source # |
Instance details Defined in GHC.Exts.Heap.Closures Associated Types type Rep (GenClosure b) :: Type -> Type Source # 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 Methods showsPrec :: Int -> GenClosure b -> ShowS Source # show :: GenClosure b -> String Source # showList :: [GenClosure b] -> ShowS Source #
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-9.6.3" '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 Int)))) :+: ((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)))))))

data ClosureType Source #

Constructors

INVALID_OBJECT |
CONSTR |
CONSTR_1_0 |
CONSTR_0_1 |
CONSTR_2_0 |
CONSTR_1_1 |
CONSTR_0_2 |
CONSTR_NOCAF |
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 |
BCO |
AP |
PAP |
AP_STACK |
IND |
IND_STATIC |
RET_BCO |
RET_SMALL |
RET_BIG |
RET_FUN |
UPDATE_FRAME |
CATCH_FRAME |
UNDERFLOW_FRAME |
STOP_FRAME |
BLOCKING_QUEUE |
BLACKHOLE |
MVAR_CLEAN |
MVAR_DIRTY |
TVAR |
ARR_WORDS |
MUT_ARR_PTRS_CLEAN |
MUT_ARR_PTRS_DIRTY |
MUT_ARR_PTRS_FROZEN_DIRTY |
MUT_ARR_PTRS_FROZEN_CLEAN |
MUT_VAR_CLEAN |
MUT_VAR_DIRTY |
WEAK |
PRIM |
MUT_PRIM |
TSO |
STACK |
TREC_CHUNK |
ATOMICALLY_FRAME |
CATCH_RETRY_FRAME |
CATCH_STM_FRAME |
WHITEHOLE |
SMALL_MUT_ARR_PTRS_CLEAN |
SMALL_MUT_ARR_PTRS_DIRTY |
SMALL_MUT_ARR_PTRS_FROZEN_DIRTY |
SMALL_MUT_ARR_PTRS_FROZEN_CLEAN |
COMPACT_NFDATA |
CONTINUATION |
N_CLOSURE_TYPES |

#### Instances

Instances details

Enum ClosureType Source # |

Instance details

Defined in GHC.Exts.Heap.ClosureTypes

Methods

succ :: ClosureType -> ClosureType Source #

pred :: ClosureType -> ClosureType Source #

toEnum :: Int -> ClosureType Source #

fromEnum :: ClosureType -> Int Source #

enumFrom :: ClosureType -> [ClosureType] Source #

enumFromThen :: ClosureType -> ClosureType -> [ClosureType] Source #

enumFromTo :: ClosureType -> ClosureType -> [ClosureType] Source #

enumFromThenTo :: ClosureType -> ClosureType -> ClosureType -> [ClosureType] Source #

Generic ClosureType Source # |
Instance details Defined in GHC.Exts.Heap.ClosureTypes Associated Types type Rep ClosureType :: Type -> Type Source # Methods from :: ClosureType -> Rep ClosureType x Source # to :: Rep ClosureType x -> ClosureType Source #
Show ClosureType Source # |
Instance details Defined in GHC.Exts.Heap.ClosureTypes Methods showsPrec :: Int -> ClosureType -> ShowS Source # show :: ClosureType -> String Source # showList :: [ClosureType] -> ShowS Source #
Eq ClosureType Source # |
Instance details Defined in GHC.Exts.Heap.ClosureTypes Methods (==) :: ClosureType -> ClosureType -> Bool Source # (/=) :: ClosureType -> ClosureType -> Bool Source #
Ord ClosureType Source # |

Instance details

Defined in GHC.Exts.Heap.ClosureTypes

Methods

compare :: ClosureType -> ClosureType -> Ordering Source #

(<) :: ClosureType -> ClosureType -> Bool Source #

(<=) :: ClosureType -> ClosureType -> Bool Source #

(>) :: ClosureType -> ClosureType -> Bool Source #

(>=) :: ClosureType -> ClosureType -> Bool Source #

max :: ClosureType -> ClosureType -> ClosureType Source #

min :: ClosureType -> ClosureType -> ClosureType Source #

type Rep ClosureType Source # |

Instance details

Defined in GHC.Exts.Heap.ClosureTypes

type Rep ClosureType = D1 ('MetaData "ClosureType" "GHC.Exts.Heap.ClosureTypes" "ghc-heap-9.6.3" 'False) ((((((C1 ('MetaCons "INVALID_OBJECT" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CONSTR" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "CONSTR_1_0" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CONSTR_0_1" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "CONSTR_2_0" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CONSTR_1_1" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "CONSTR_0_2" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CONSTR_NOCAF" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "FUN" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "FUN_1_0" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "FUN_0_1" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "FUN_2_0" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "FUN_1_1" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "FUN_0_2" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "FUN_STATIC" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THUNK" 'PrefixI 'False) (U1 :: Type -> Type))))) :+: ((((C1 ('MetaCons "THUNK_1_0" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THUNK_0_1" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "THUNK_2_0" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THUNK_1_1" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "THUNK_0_2" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "THUNK_STATIC" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "THUNK_SELECTOR" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BCO" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "AP" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PAP" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "AP_STACK" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "IND" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "IND_STATIC" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "RET_BCO" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "RET_SMALL" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "RET_BIG" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "RET_FUN" 'PrefixI 'False) (U1 :: Type -> Type))))))) :+: (((((C1 ('MetaCons "UPDATE_FRAME" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CATCH_FRAME" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "UNDERFLOW_FRAME" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "STOP_FRAME" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "BLOCKING_QUEUE" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "BLACKHOLE" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "MVAR_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "MVAR_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "TVAR" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ARR_WORDS" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "MUT_ARR_PTRS_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "MUT_ARR_PTRS_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "MUT_ARR_PTRS_FROZEN_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "MUT_ARR_PTRS_FROZEN_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "MUT_VAR_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "MUT_VAR_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type))))) :+: ((((C1 ('MetaCons "WEAK" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PRIM" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "MUT_PRIM" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TSO" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "STACK" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TREC_CHUNK" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "ATOMICALLY_FRAME" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CATCH_RETRY_FRAME" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "CATCH_STM_FRAME" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "WHITEHOLE" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "SMALL_MUT_ARR_PTRS_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "SMALL_MUT_ARR_PTRS_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "SMALL_MUT_ARR_PTRS_FROZEN_DIRTY" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "SMALL_MUT_ARR_PTRS_FROZEN_CLEAN" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "COMPACT_NFDATA" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "CONTINUATION" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "N_CLOSURE_TYPES" 'PrefixI 'False) (U1 :: Type -> Type))))))))

data PrimType Source #

Constructors

PInt |
PWord |
PInt64 |
PWord64 |
PAddr |
PFloat |
PDouble |

#### Instances

Instances details

Generic PrimType Source # |
Instance details Defined in GHC.Exts.Heap.Closures Associated Types type Rep PrimType :: Type -> Type Source # Methods from :: PrimType -> Rep PrimType x Source # to :: Rep PrimType x -> PrimType Source #
Show PrimType Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods showsPrec :: Int -> PrimType -> ShowS Source # show :: PrimType -> String Source # showList :: [PrimType] -> ShowS Source #
Eq PrimType Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods (==) :: PrimType -> PrimType -> Bool Source # (/=) :: PrimType -> PrimType -> Bool Source #
Ord PrimType Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods compare :: PrimType -> PrimType -> Ordering Source # (<) :: PrimType -> PrimType -> Bool Source # (<=) :: PrimType -> PrimType -> Bool Source # (>) :: PrimType -> PrimType -> Bool Source # (>=) :: PrimType -> PrimType -> Bool Source # max :: PrimType -> PrimType -> PrimType Source # min :: PrimType -> PrimType -> PrimType Source #
type Rep PrimType Source # |

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep PrimType = D1 ('MetaData "PrimType" "GHC.Exts.Heap.Closures" "ghc-heap-9.6.3" '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 #

Constructors

ThreadRunGHC |
ThreadInterpret |
ThreadKilled |
ThreadComplete |
WhatNextUnknownValue Word16 | Please report this as a bug

#### Instances

Instances details

Generic WhatNext Source # |
Instance details Defined in GHC.Exts.Heap.Closures Associated Types type Rep WhatNext :: Type -> Type Source # Methods from :: WhatNext -> Rep WhatNext x Source # to :: Rep WhatNext x -> WhatNext Source #
Show WhatNext Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods showsPrec :: Int -> WhatNext -> ShowS Source # show :: WhatNext -> String Source # showList :: [WhatNext] -> ShowS Source #
Eq WhatNext Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods (==) :: WhatNext -> WhatNext -> Bool Source # (/=) :: WhatNext -> WhatNext -> Bool Source #
Ord WhatNext Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods compare :: WhatNext -> WhatNext -> Ordering Source # (<) :: WhatNext -> WhatNext -> Bool Source # (<=) :: WhatNext -> WhatNext -> Bool Source # (>) :: WhatNext -> WhatNext -> Bool Source # (>=) :: WhatNext -> WhatNext -> Bool Source # max :: WhatNext -> WhatNext -> WhatNext Source # min :: WhatNext -> WhatNext -> WhatNext Source #
type Rep WhatNext Source # |

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhatNext = D1 ('MetaData "WhatNext" "GHC.Exts.Heap.Closures" "ghc-heap-9.6.3" '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 #

Constructors

NotBlocked |
BlockedOnMVar |
BlockedOnMVarRead |
BlockedOnBlackHole |
BlockedOnRead |
BlockedOnWrite |
BlockedOnDelay |
BlockedOnSTM |
BlockedOnDoProc |
BlockedOnCCall |
BlockedOnCCall_Interruptible |
BlockedOnMsgThrowTo |
ThreadMigrating |
WhyBlockedUnknownValue Word16 | Please report this as a bug

#### Instances

Instances details

Generic WhyBlocked Source # |
Instance details Defined in GHC.Exts.Heap.Closures Associated Types type Rep WhyBlocked :: Type -> Type Source # Methods from :: WhyBlocked -> Rep WhyBlocked x Source # to :: Rep WhyBlocked x -> WhyBlocked Source #
Show WhyBlocked Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods showsPrec :: Int -> WhyBlocked -> ShowS Source # show :: WhyBlocked -> String Source # showList :: [WhyBlocked] -> ShowS Source #
Eq WhyBlocked Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods (==) :: WhyBlocked -> WhyBlocked -> Bool Source # (/=) :: WhyBlocked -> WhyBlocked -> Bool Source #
Ord WhyBlocked Source # |

Instance details

Defined in GHC.Exts.Heap.Closures

Methods

compare :: WhyBlocked -> WhyBlocked -> Ordering Source #

(<) :: WhyBlocked -> WhyBlocked -> Bool Source #

(<=) :: WhyBlocked -> WhyBlocked -> Bool Source #

(>) :: WhyBlocked -> WhyBlocked -> Bool Source #

(>=) :: WhyBlocked -> WhyBlocked -> Bool Source #

max :: WhyBlocked -> WhyBlocked -> WhyBlocked Source #

min :: WhyBlocked -> WhyBlocked -> WhyBlocked Source #

type Rep WhyBlocked Source # |

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhyBlocked = D1 ('MetaData "WhyBlocked" "GHC.Exts.Heap.Closures" "ghc-heap-9.6.3" '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 #

Constructors

TsoLocked |
TsoBlockx |
TsoInterruptible |
TsoStoppedOnBreakpoint |
TsoMarked |
TsoSqueezed |
TsoAllocLimit |
TsoFlagsUnknownValue Word32 | Please report this as a bug

#### Instances

Instances details

Generic TsoFlags Source # |
Instance details Defined in GHC.Exts.Heap.Closures Associated Types type Rep TsoFlags :: Type -> Type Source # Methods from :: TsoFlags -> Rep TsoFlags x Source # to :: Rep TsoFlags x -> TsoFlags Source #
Show TsoFlags Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods showsPrec :: Int -> TsoFlags -> ShowS Source # show :: TsoFlags -> String Source # showList :: [TsoFlags] -> ShowS Source #
Eq TsoFlags Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods (==) :: TsoFlags -> TsoFlags -> Bool Source # (/=) :: TsoFlags -> TsoFlags -> Bool Source #
Ord TsoFlags Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods compare :: TsoFlags -> TsoFlags -> Ordering Source # (<) :: TsoFlags -> TsoFlags -> Bool Source # (<=) :: TsoFlags -> TsoFlags -> Bool Source # (>) :: TsoFlags -> TsoFlags -> Bool Source # (>=) :: TsoFlags -> TsoFlags -> Bool Source # max :: TsoFlags -> TsoFlags -> TsoFlags Source # min :: TsoFlags -> TsoFlags -> TsoFlags Source #
type Rep TsoFlags Source # |

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep TsoFlags = D1 ('MetaData "TsoFlags" "GHC.Exts.Heap.Closures" "ghc-heap-9.6.3" '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)))))

class HasHeapRep (a :: TYPE rep) where Source #

Methods

getClosureData Source #

Arguments

:: a | Closure to decode.
-> IO Closure | Heap representation of the closure.

Decode a closure to it's heap representation (`GenClosure`).

#### Instances

Instances details

Addr# ~ a => HasHeapRep (a :: TYPE 'AddrRep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Double# ~ a => HasHeapRep (a :: TYPE 'DoubleRep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Float# ~ a => HasHeapRep (a :: TYPE 'FloatRep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Int64# ~ a => HasHeapRep (a :: TYPE 'Int64Rep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Int# ~ a => HasHeapRep (a :: TYPE 'IntRep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
HasHeapRep (a :: Type) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
HasHeapRep (a :: UnliftedType) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Word64# ~ a => HasHeapRep (a :: TYPE 'Word64Rep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #
Word# ~ a => HasHeapRep (a :: TYPE 'WordRep) Source # |
Instance details Defined in GHC.Exts.Heap Methods getClosureData :: a -> IO Closure Source #

getClosureDataFromHeapRep :: ByteArray# -> Ptr StgInfoTable -> [b] -> IO (GenClosure b) Source #

Convert an unpacked heap object, to a `GenClosure b`. The inputs to this function can be generated from a heap object using `unpackClosure#`.

getClosureDataFromHeapRepPrim Source #

Arguments

:: IO (String, String, String) | A continuation used to decode the constructor description field, in ghc-debug this code can lead to segfaults because dataConNames will dereference a random part of memory.
-> (Ptr a -> IO (Maybe CostCentreStack)) | A continuation which is used to decode a cost centre stack In ghc-debug, this code will need to call back into the debuggee to fetch the representation of the CCS before decoding it. Using `peekTopCCS` for this argument can lead to segfaults in ghc-debug as the CCS argument will point outside the copied closure.
-> StgInfoTable | The `StgInfoTable` of the closure, extracted from the heap representation.
-> ByteArray# | Heap representation of the closure as returned by `unpackClosure#`. This includes all of the object including the header, info table pointer, pointer data, and non-pointer data. The ByteArray# may be pinned or unpinned.
-> [b] | Pointers in the payload of the closure, extracted from the heap representation as returned by `collect_pointers()` in `c`. The type `b` is some representation of a pointer e.g. `Any` or `Ptr Any`.
-> IO (GenClosure b) | Heap representation of the closure.

# Info Table types

data StgInfoTable Source #

This is a somewhat faithful representation of an info table. See https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/storage/InfoTables.h for more details on this data structure.

Constructors

StgInfoTable |

Fields

- entry :: Maybe EntryFunPtr
- ptrs :: HalfWord
- nptrs :: HalfWord
- tipe :: ClosureType
- srtlen :: HalfWord
- code :: Maybe ItblCodes

#### Instances

Instances details

Generic StgInfoTable Source # |
Instance details Defined in GHC.Exts.Heap.InfoTable.Types Associated Types type Rep StgInfoTable :: Type -> Type Source # Methods from :: StgInfoTable -> Rep StgInfoTable x Source # to :: Rep StgInfoTable x -> StgInfoTable Source #
Show StgInfoTable Source # |
Instance details Defined in GHC.Exts.Heap.InfoTable.Types Methods showsPrec :: Int -> StgInfoTable -> ShowS Source # show :: StgInfoTable -> String Source # showList :: [StgInfoTable] -> ShowS Source #
type Rep StgInfoTable Source # |

Instance details

Defined in GHC.Exts.Heap.InfoTable.Types

type Rep StgInfoTable = D1 ('MetaData "StgInfoTable" "GHC.Exts.Heap.InfoTable.Types" "ghc-heap-9.6.3" 'False) (C1 ('MetaCons "StgInfoTable" 'PrefixI 'True) ((S1 ('MetaSel ('Just "entry") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe EntryFunPtr)) :*: (S1 ('MetaSel ('Just "ptrs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HalfWord) :*: S1 ('MetaSel ('Just "nptrs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HalfWord))) :*: (S1 ('MetaSel ('Just "tipe") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ClosureType) :*: (S1 ('MetaSel ('Just "srtlen") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HalfWord) :*: S1 ('MetaSel ('Just "code") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe ItblCodes))))))

type EntryFunPtr = FunPtr (Ptr () -> IO (Ptr ())) Source #

type HalfWord = Word32 Source #

type ItblCodes = Either [Word8] [Word32] Source #

itblSize :: Int Source #

Size in bytes of a standard InfoTable

peekItbl :: Ptr StgInfoTable -> IO StgInfoTable Source #

Read an InfoTable from the heap into a haskell type. WARNING: This code assumes it is passed a pointer to a "standard" info table. If tables_next_to_code is enabled, it will look 1 byte before the start for the entry field.

pokeItbl :: Ptr StgInfoTable -> StgInfoTable -> IO () Source #

# Cost Centre (profiling) types

newtype StgTSOProfInfo Source #

This is a somewhat faithful representation of StgTSOProfInfo. See https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/storage/TSO.h for more details on this data structure.

Constructors

StgTSOProfInfo |

Fields

- cccs :: Maybe CostCentreStack

#### Instances

Instances details

Generic StgTSOProfInfo Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Associated Types type Rep StgTSOProfInfo :: Type -> Type Source # Methods from :: StgTSOProfInfo -> Rep StgTSOProfInfo x Source # to :: Rep StgTSOProfInfo x -> StgTSOProfInfo Source #
Show StgTSOProfInfo Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods showsPrec :: Int -> StgTSOProfInfo -> ShowS Source # show :: StgTSOProfInfo -> String Source # showList :: [StgTSOProfInfo] -> ShowS Source #
Eq StgTSOProfInfo Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods (==) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source # (/=) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source #
Ord StgTSOProfInfo Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Methods

compare :: StgTSOProfInfo -> StgTSOProfInfo -> Ordering Source #

(<) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source #

(<=) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source #

(>) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source #

(>=) :: StgTSOProfInfo -> StgTSOProfInfo -> Bool Source #

max :: StgTSOProfInfo -> StgTSOProfInfo -> StgTSOProfInfo Source #

min :: StgTSOProfInfo -> StgTSOProfInfo -> StgTSOProfInfo Source #

type Rep StgTSOProfInfo Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types type Rep StgTSOProfInfo = D1 ('MetaData "StgTSOProfInfo" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.6.3" 'True) (C1 ('MetaCons "StgTSOProfInfo" 'PrefixI 'True) (S1 ('MetaSel ('Just "cccs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentreStack))))

data IndexTable Source #

This is a somewhat faithful representation of IndexTable. See https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/prof/CCS.h for more details on this data structure.

Constructors

IndexTable |

Fields

- it_cc :: CostCentre
- it_ccs :: Maybe CostCentreStack
- it_next :: Maybe IndexTable
- it_back_edge :: Bool

#### Instances

Instances details

Generic IndexTable Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Associated Types type Rep IndexTable :: Type -> Type Source # Methods from :: IndexTable -> Rep IndexTable x Source # to :: Rep IndexTable x -> IndexTable Source #
Show IndexTable Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods showsPrec :: Int -> IndexTable -> ShowS Source # show :: IndexTable -> String Source # showList :: [IndexTable] -> ShowS Source #
Eq IndexTable Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods (==) :: IndexTable -> IndexTable -> Bool Source # (/=) :: IndexTable -> IndexTable -> Bool Source #
Ord IndexTable Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Methods

compare :: IndexTable -> IndexTable -> Ordering Source #

(<) :: IndexTable -> IndexTable -> Bool Source #

(<=) :: IndexTable -> IndexTable -> Bool Source #

(>) :: IndexTable -> IndexTable -> Bool Source #

(>=) :: IndexTable -> IndexTable -> Bool Source #

max :: IndexTable -> IndexTable -> IndexTable Source #

min :: IndexTable -> IndexTable -> IndexTable Source #

type Rep IndexTable Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

type Rep IndexTable = D1 ('MetaData "IndexTable" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.6.3" 'False) (C1 ('MetaCons "IndexTable" 'PrefixI 'True) ((S1 ('MetaSel ('Just "it_cc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 CostCentre) :*: S1 ('MetaSel ('Just "it_ccs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentreStack))) :*: (S1 ('MetaSel ('Just "it_next") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe IndexTable)) :*: S1 ('MetaSel ('Just "it_back_edge") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))

data CostCentre Source #

This is a somewhat faithful representation of CostCentre. See https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/prof/CCS.h for more details on this data structure.

Constructors

CostCentre |

Fields

- cc_ccID :: Int
- cc_label :: String
- cc_module :: String
- cc_srcloc :: Maybe String
- cc_mem_alloc :: Word64
- cc_time_ticks :: Word
- cc_is_caf :: Bool
- cc_link :: Maybe CostCentre

#### Instances

Instances details

Generic CostCentre Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Associated Types type Rep CostCentre :: Type -> Type Source # Methods from :: CostCentre -> Rep CostCentre x Source # to :: Rep CostCentre x -> CostCentre Source #
Show CostCentre Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods showsPrec :: Int -> CostCentre -> ShowS Source # show :: CostCentre -> String Source # showList :: [CostCentre] -> ShowS Source #
Eq CostCentre Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods (==) :: CostCentre -> CostCentre -> Bool Source # (/=) :: CostCentre -> CostCentre -> Bool Source #
Ord CostCentre Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Methods

compare :: CostCentre -> CostCentre -> Ordering Source #

(<) :: CostCentre -> CostCentre -> Bool Source #

(<=) :: CostCentre -> CostCentre -> Bool Source #

(>) :: CostCentre -> CostCentre -> Bool Source #

(>=) :: CostCentre -> CostCentre -> Bool Source #

max :: CostCentre -> CostCentre -> CostCentre Source #

min :: CostCentre -> CostCentre -> CostCentre Source #

type Rep CostCentre Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

type Rep CostCentre = D1 ('MetaData "CostCentre" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.6.3" 'False) (C1 ('MetaCons "CostCentre" 'PrefixI 'True) (((S1 ('MetaSel ('Just "cc_ccID") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: S1 ('MetaSel ('Just "cc_label") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)) :*: (S1 ('MetaSel ('Just "cc_module") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String) :*: S1 ('MetaSel ('Just "cc_srcloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)))) :*: ((S1 ('MetaSel ('Just "cc_mem_alloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just "cc_time_ticks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "cc_is_caf") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "cc_link") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentre))))))

data CostCentreStack Source #

This is a somewhat faithful representation of CostCentreStack. See https://gitlab.haskell.org/ghc/ghc/blob/master/rts/include/rts/prof/CCS.h for more details on this data structure.

Constructors

CostCentreStack |

Fields

- ccs_ccsID :: Int
- ccs_cc :: CostCentre
- ccs_prevStack :: Maybe CostCentreStack
- ccs_indexTable :: Maybe IndexTable
- ccs_root :: Maybe CostCentreStack
- ccs_depth :: Word
- ccs_scc_count :: Word64
- ccs_selected :: Word
- ccs_time_ticks :: Word
- ccs_mem_alloc :: Word64
- ccs_inherited_alloc :: Word64
- ccs_inherited_ticks :: Word

#### Instances

Instances details

Generic CostCentreStack Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Associated Types type Rep CostCentreStack :: Type -> Type Source # Methods from :: CostCentreStack -> Rep CostCentreStack x Source # to :: Rep CostCentreStack x -> CostCentreStack Source #
Show CostCentreStack Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods showsPrec :: Int -> CostCentreStack -> ShowS Source # show :: CostCentreStack -> String Source # showList :: [CostCentreStack] -> ShowS Source #
Eq CostCentreStack Source # |
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types Methods (==) :: CostCentreStack -> CostCentreStack -> Bool Source # (/=) :: CostCentreStack -> CostCentreStack -> Bool Source #
Ord CostCentreStack Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Methods

compare :: CostCentreStack -> CostCentreStack -> Ordering Source #

(<) :: CostCentreStack -> CostCentreStack -> Bool Source #

(<=) :: CostCentreStack -> CostCentreStack -> Bool Source #

(>) :: CostCentreStack -> CostCentreStack -> Bool Source #

(>=) :: CostCentreStack -> CostCentreStack -> Bool Source #

max :: CostCentreStack -> CostCentreStack -> CostCentreStack Source #

min :: CostCentreStack -> CostCentreStack -> CostCentreStack Source #

type Rep CostCentreStack Source # |

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

type Rep CostCentreStack = D1 ('MetaData "CostCentreStack" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.6.3" 'False) (C1 ('MetaCons "CostCentreStack" 'PrefixI 'True) (((S1 ('MetaSel ('Just "ccs_ccsID") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: (S1 ('MetaSel ('Just "ccs_cc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 CostCentre) :*: S1 ('MetaSel ('Just "ccs_prevStack") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentreStack)))) :*: (S1 ('MetaSel ('Just "ccs_indexTable") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe IndexTable)) :*: (S1 ('MetaSel ('Just "ccs_root") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentreStack)) :*: S1 ('MetaSel ('Just "ccs_depth") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))) :*: ((S1 ('MetaSel ('Just "ccs_scc_count") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: (S1 ('MetaSel ('Just "ccs_selected") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "ccs_time_ticks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word))) :*: (S1 ('MetaSel ('Just "ccs_mem_alloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: (S1 ('MetaSel ('Just "ccs_inherited_alloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64) :*: S1 ('MetaSel ('Just "ccs_inherited_ticks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word))))))

# Closure inspection

getBoxedClosureData :: Box -> IO Closure Source #

Like `getClosureData`, but taking a `Box`, so it is easier to work with.

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

For generic code, this function returns all referenced closures.

# 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 |

#### Instances

Instances details

Show Box Source # |
Instance details Defined in GHC.Exts.Heap.Closures Methods showsPrec :: Int -> Box -> ShowS Source # show :: Box -> String Source # showList :: [Box] -> ShowS Source #

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

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.