Copyright	(c) 2012 Joachim Breitner
License	BSD3
Maintainer	Joachim Breitner <mail@joachim-breitner.de>
Safe Haskell	None
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 :: !(Ptr ())
  }
- | FloatClosure {
  - ptipe :: PrimType
  - floatVal :: !Float
  }
- | DoubleClosure {
  - ptipe :: PrimType
  - doubleVal :: !Double
  }
- | OtherClosure {
  - info :: !StgInfoTable
  - hvalues :: ![b]
  - rawWords :: ![Word]
  }
- | UnsupportedClosure {
  - info :: !StgInfoTable
  }
- | UnknownTypeWordSizedPrimitive {
  - wordVal :: !Word
  }
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 :: Type)
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 :: !(Ptr ())
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
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 wordVal :: !Word

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

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

data ClosureType Source #

Enum representing closure types This is a mirror of: rtsincludertsstorageClosureTypes.h

Since: ghc-internal-0.1.0.0

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.Internal.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.Internal.ClosureTypes

Associated Types

type Rep ClosureType

Instance details

Defined in GHC.Internal.ClosureTypes

type Rep ClosureType = D1 ('MetaData "ClosureType" "GHC.Internal.ClosureTypes" "ghc-internal" '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))))))))

Methods

from :: ClosureType -> Rep ClosureType x Source #

to :: Rep ClosureType x -> ClosureType Source #

Show ClosureType Source #

Instance details

Defined in GHC.Internal.ClosureTypes

Methods

showsPrec :: Int -> ClosureType -> ShowS Source #

show :: ClosureType -> String Source #

showList :: [ClosureType] -> ShowS Source #

Eq ClosureType Source #

Instance details

Defined in GHC.Internal.ClosureTypes

Methods

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

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

Ord ClosureType Source #

Instance details

Defined in GHC.Internal.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.Internal.ClosureTypes

type Rep ClosureType = D1 ('MetaData "ClosureType" "GHC.Internal.ClosureTypes" "ghc-internal" '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

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep PrimType = D1 ('MetaData "PrimType" "GHC.Exts.Heap.Closures" "ghc-heap-9.12.1-3c58" '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))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhatNext = D1 ('MetaData "WhatNext" "GHC.Exts.Heap.Closures" "ghc-heap-9.12.1-3c58" '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)))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep WhyBlocked = D1 ('MetaData "WhyBlocked" "GHC.Exts.Heap.Closures" "ghc-heap-9.12.1-3c58" '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))))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.Closures

type Rep TsoFlags = D1 ('MetaData "TsoFlags" "GHC.Exts.Heap.Closures" "ghc-heap-9.12.1-3c58" '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)))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.InfoTable.Types

type Rep StgInfoTable = D1 ('MetaData "StgInfoTable" "GHC.Exts.Heap.InfoTable.Types" "ghc-heap-9.12.1-3c58" '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))))))

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 #

Eq StgInfoTable Source #

Instance details

Defined in GHC.Exts.Heap.InfoTable.Types

Methods

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

(/=) :: StgInfoTable -> StgInfoTable -> Bool 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-9.12.1-3c58" '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
Instance details Defined in GHC.Exts.Heap.ProfInfo.Types type Rep StgTSOProfInfo = D1 ('MetaData "StgTSOProfInfo" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.12.1-3c58" 'True) (C1 ('MetaCons "StgTSOProfInfo" 'PrefixI 'True) (S1 ('MetaSel ('Just "cccs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe CostCentreStack))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

type Rep IndexTable = D1 ('MetaData "IndexTable" "GHC.Exts.Heap.ProfInfo.Types" "ghc-heap-9.12.1-3c58" '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))))

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-9.12.1-3c58" '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

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

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

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

Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

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

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 :: Type)

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.