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GHC.RTS.Flags

Copyright (c) The University of Glasgow 1994-2000
License see libraries/base/LICENSE
Maintainer ghc-devs@haskell.org
Stability internal
Portability non-portable (GHC extensions)
Safe Haskell None
Language Haskell2010

Description

The API of this module is unstable and is tightly coupled to GHC's internals. If depend on it, make sure to use a tight upper bound, e.g., base < 4.X rather than base < 5, because the interface can change rapidly without much warning.

Descriptions of flags can be seen in GHC User's Guide, or by running RTS help message using +RTS --help.

This module is a compatibility layer. It is meant to be temporary to allow for the eventual deprecation of these declarations as described in CLC proposal #289. These declarations are now instead available from the ghc-experimental package.

Since: base-4.8.0.0

type RtsTime = Word64 Source

RtsTime is defined as a StgWord64 in stg/Types.h

Since: base-4.8.2.0

data RTSFlags Source

Parameters of the runtime system

Since: base-4.8.0.0

Constructors

RTSFlags

Fields

  • gcFlags :: GCFlags
  • concurrentFlags :: ConcFlags
  • miscFlags :: MiscFlags
  • debugFlags :: DebugFlags
  • costCentreFlags :: CCFlags
  • profilingFlags :: ProfFlags
  • traceFlags :: TraceFlags
  • tickyFlags :: TickyFlags
  • parFlags :: ParFlags
  • hpcFlags :: HpcFlags
Instances
Instances details
Generic RTSFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep RTSFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep RTSFlags = D1 ('MetaData "RTSFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "RTSFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "gcFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 GCFlags) :*: S1 ('MetaSel ('Just "concurrentFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ConcFlags)) :*: (S1 ('MetaSel ('Just "miscFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 MiscFlags) :*: (S1 ('MetaSel ('Just "debugFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DebugFlags) :*: S1 ('MetaSel ('Just "costCentreFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 CCFlags)))) :*: ((S1 ('MetaSel ('Just "profilingFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ProfFlags) :*: S1 ('MetaSel ('Just "traceFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 TraceFlags)) :*: (S1 ('MetaSel ('Just "tickyFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 TickyFlags) :*: (S1 ('MetaSel ('Just "parFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ParFlags) :*: S1 ('MetaSel ('Just "hpcFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HpcFlags))))))

Methods

from :: RTSFlags -> Rep RTSFlags x Source

to :: Rep RTSFlags x -> RTSFlags Source

Show RTSFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> RTSFlags -> ShowS Source

show :: RTSFlags -> String Source

showList :: [RTSFlags] -> ShowS Source

type Rep RTSFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep RTSFlags = D1 ('MetaData "RTSFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "RTSFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "gcFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 GCFlags) :*: S1 ('MetaSel ('Just "concurrentFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ConcFlags)) :*: (S1 ('MetaSel ('Just "miscFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 MiscFlags) :*: (S1 ('MetaSel ('Just "debugFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DebugFlags) :*: S1 ('MetaSel ('Just "costCentreFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 CCFlags)))) :*: ((S1 ('MetaSel ('Just "profilingFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ProfFlags) :*: S1 ('MetaSel ('Just "traceFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 TraceFlags)) :*: (S1 ('MetaSel ('Just "tickyFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 TickyFlags) :*: (S1 ('MetaSel ('Just "parFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ParFlags) :*: S1 ('MetaSel ('Just "hpcFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HpcFlags))))))

data GiveGCStats Source

Should we produce a summary of the garbage collector statistics after the program has exited?

Since: base-4.8.2.0

Constructors

NoGCStats
CollectGCStats
OneLineGCStats
SummaryGCStats
VerboseGCStats
Instances
Instances details
Generic GiveGCStats Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep GiveGCStats

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep GiveGCStats = D1 ('MetaData "GiveGCStats" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) ((C1 ('MetaCons "NoGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CollectGCStats" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "OneLineGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "SummaryGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "VerboseGCStats" 'PrefixI 'False) (U1 :: Type -> Type))))

Methods

from :: GiveGCStats -> Rep GiveGCStats x Source

to :: Rep GiveGCStats x -> GiveGCStats Source

Show GiveGCStats Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> GiveGCStats -> ShowS Source

show :: GiveGCStats -> String Source

showList :: [GiveGCStats] -> ShowS Source

type Rep GiveGCStats Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep GiveGCStats = D1 ('MetaData "GiveGCStats" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) ((C1 ('MetaCons "NoGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CollectGCStats" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "OneLineGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "SummaryGCStats" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "VerboseGCStats" 'PrefixI 'False) (U1 :: Type -> Type))))

data GCFlags Source

Parameters of the garbage collector.

Since: base-4.8.0.0

Constructors

GCFlags

Fields

  • statsFile :: Maybe FilePath
  • giveStats :: GiveGCStats
  • maxStkSize :: Word32
  • initialStkSize :: Word32
  • stkChunkSize :: Word32
  • stkChunkBufferSize :: Word32
  • maxHeapSize :: Word32
  • minAllocAreaSize :: Word32
  • largeAllocLim :: Word32
  • nurseryChunkSize :: Word32
  • minOldGenSize :: Word32
  • heapSizeSuggestion :: Word32
  • heapSizeSuggestionAuto :: Bool
  • oldGenFactor :: Double
  • returnDecayFactor :: Double
  • pcFreeHeap :: Double
  • generations :: Word32
  • squeezeUpdFrames :: Bool
  • compact :: Bool

    True = "compact all the time"

  • compactThreshold :: Double
  • sweep :: Bool

    use "mostly mark-sweep" instead of copying for the oldest generation

  • ringBell :: Bool
  • idleGCDelayTime :: RtsTime
  • doIdleGC :: Bool
  • heapBase :: Word

    address to ask the OS for memory

  • allocLimitGrace :: Word
  • numa :: Bool
  • numaMask :: Word
Instances
Instances details
Generic GCFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep GCFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep GCFlags = D1 ('MetaData "GCFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "GCFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "statsFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe FilePath)) :*: (S1 ('MetaSel ('Just "giveStats") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 GiveGCStats) :*: S1 ('MetaSel ('Just "maxStkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "initialStkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "stkChunkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "stkChunkBufferSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "maxHeapSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))) :*: ((S1 ('MetaSel ('Just "minAllocAreaSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "largeAllocLim") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "nurseryChunkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "minOldGenSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "heapSizeSuggestion") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "heapSizeSuggestionAuto") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "oldGenFactor") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double))))) :*: (((S1 ('MetaSel ('Just "returnDecayFactor") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: (S1 ('MetaSel ('Just "pcFreeHeap") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: S1 ('MetaSel ('Just "generations") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "squeezeUpdFrames") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "compact") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "compactThreshold") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: S1 ('MetaSel ('Just "sweep") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: ((S1 ('MetaSel ('Just "ringBell") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "idleGCDelayTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: S1 ('MetaSel ('Just "doIdleGC") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "heapBase") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "allocLimitGrace") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "numa") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "numaMask") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))))))

Methods

from :: GCFlags -> Rep GCFlags x Source

to :: Rep GCFlags x -> GCFlags Source

Show GCFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> GCFlags -> ShowS Source

show :: GCFlags -> String Source

showList :: [GCFlags] -> ShowS Source

type Rep GCFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep GCFlags = D1 ('MetaData "GCFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "GCFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "statsFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe FilePath)) :*: (S1 ('MetaSel ('Just "giveStats") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 GiveGCStats) :*: S1 ('MetaSel ('Just "maxStkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "initialStkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "stkChunkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "stkChunkBufferSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "maxHeapSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))) :*: ((S1 ('MetaSel ('Just "minAllocAreaSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "largeAllocLim") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "nurseryChunkSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "minOldGenSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "heapSizeSuggestion") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "heapSizeSuggestionAuto") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "oldGenFactor") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double))))) :*: (((S1 ('MetaSel ('Just "returnDecayFactor") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: (S1 ('MetaSel ('Just "pcFreeHeap") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: S1 ('MetaSel ('Just "generations") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))) :*: ((S1 ('MetaSel ('Just "squeezeUpdFrames") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "compact") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "compactThreshold") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Double) :*: S1 ('MetaSel ('Just "sweep") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: ((S1 ('MetaSel ('Just "ringBell") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "idleGCDelayTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: S1 ('MetaSel ('Just "doIdleGC") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "heapBase") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "allocLimitGrace") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)) :*: (S1 ('MetaSel ('Just "numa") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "numaMask") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))))))

data ConcFlags Source

Parameters concerning context switching

Since: base-4.8.0.0

Constructors

ConcFlags

Fields

  • ctxtSwitchTime :: RtsTime
  • ctxtSwitchTicks :: Int
Instances
Instances details
Generic ConcFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep ConcFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ConcFlags = D1 ('MetaData "ConcFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ConcFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "ctxtSwitchTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: S1 ('MetaSel ('Just "ctxtSwitchTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int)))

Methods

from :: ConcFlags -> Rep ConcFlags x Source

to :: Rep ConcFlags x -> ConcFlags Source

Show ConcFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> ConcFlags -> ShowS Source

show :: ConcFlags -> String Source

showList :: [ConcFlags] -> ShowS Source

type Rep ConcFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ConcFlags = D1 ('MetaData "ConcFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ConcFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "ctxtSwitchTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: S1 ('MetaSel ('Just "ctxtSwitchTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int)))

data MiscFlags Source

Miscellaneous parameters

Since: base-4.8.0.0

Constructors

MiscFlags

Fields

  • tickInterval :: RtsTime
  • installSignalHandlers :: Bool
  • installSEHHandlers :: Bool
  • generateCrashDumpFile :: Bool
  • generateStackTrace :: Bool
  • machineReadable :: Bool
  • disableDelayedOsMemoryReturn :: Bool
  • internalCounters :: Bool
  • linkerAlwaysPic :: Bool
  • linkerMemBase :: Word

    address to ask the OS for memory for the linker, 0 ==> off

  • ioManager :: IoManagerFlag
  • numIoWorkerThreads :: Word32
Instances
Instances details
Generic MiscFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep MiscFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep MiscFlags = D1 ('MetaData "MiscFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "MiscFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "tickInterval") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: (S1 ('MetaSel ('Just "installSignalHandlers") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "installSEHHandlers") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: (S1 ('MetaSel ('Just "generateCrashDumpFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "generateStackTrace") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "machineReadable") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: ((S1 ('MetaSel ('Just "disableDelayedOsMemoryReturn") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "internalCounters") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "linkerAlwaysPic") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: (S1 ('MetaSel ('Just "linkerMemBase") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: (S1 ('MetaSel ('Just "ioManager") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 IoManagerFlag) :*: S1 ('MetaSel ('Just "numIoWorkerThreads") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))))))

Methods

from :: MiscFlags -> Rep MiscFlags x Source

to :: Rep MiscFlags x -> MiscFlags Source

Show MiscFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> MiscFlags -> ShowS Source

show :: MiscFlags -> String Source

showList :: [MiscFlags] -> ShowS Source

type Rep MiscFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep MiscFlags = D1 ('MetaData "MiscFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "MiscFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "tickInterval") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime) :*: (S1 ('MetaSel ('Just "installSignalHandlers") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "installSEHHandlers") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: (S1 ('MetaSel ('Just "generateCrashDumpFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "generateStackTrace") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "machineReadable") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: ((S1 ('MetaSel ('Just "disableDelayedOsMemoryReturn") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: (S1 ('MetaSel ('Just "internalCounters") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "linkerAlwaysPic") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: (S1 ('MetaSel ('Just "linkerMemBase") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: (S1 ('MetaSel ('Just "ioManager") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 IoManagerFlag) :*: S1 ('MetaSel ('Just "numIoWorkerThreads") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32))))))

data IoManagerFlag Source

Since: base-4.21.0.0

Constructors

IoManagerFlagAuto
IoManagerFlagSelect

Unix only, non-threaded RTS only
IoManagerFlagMIO

cross-platform, threaded RTS only
IoManagerFlagWinIO

Windows only
IoManagerFlagWin32Legacy

Windows only, non-threaded RTS only
Instances
Instances details
Eq IoManagerFlag Source
Instance details

Defined in GHC.RTS.Flags

Methods

(==) :: IoManagerFlag -> IoManagerFlag -> Bool Source

(/=) :: IoManagerFlag -> IoManagerFlag -> Bool Source

Enum IoManagerFlag Source
Instance details

Defined in GHC.RTS.Flags

Methods

succ :: IoManagerFlag -> IoManagerFlag Source

pred :: IoManagerFlag -> IoManagerFlag Source

toEnum :: Int -> IoManagerFlag Source

fromEnum :: IoManagerFlag -> Int Source

enumFrom :: IoManagerFlag -> [IoManagerFlag] Source

enumFromThen :: IoManagerFlag -> IoManagerFlag -> [IoManagerFlag] Source

enumFromTo :: IoManagerFlag -> IoManagerFlag -> [IoManagerFlag] Source

enumFromThenTo :: IoManagerFlag -> IoManagerFlag -> IoManagerFlag -> [IoManagerFlag] Source

Show IoManagerFlag Source
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> IoManagerFlag -> ShowS Source

show :: IoManagerFlag -> String Source

showList :: [IoManagerFlag] -> ShowS Source

data DebugFlags Source

Flags to control debugging output & extra checking in various subsystems.

Since: base-4.8.0.0

Constructors

DebugFlags

Fields

  • scheduler :: Bool
    s
  • interpreter :: Bool
    i
  • weak :: Bool
    w
  • gccafs :: Bool
    G
  • gc :: Bool
    g
  • nonmoving_gc :: Bool
    n
  • block_alloc :: Bool
    b
  • sanity :: Bool
    S
  • stable :: Bool
    t
  • prof :: Bool
    p
  • linker :: Bool

    l the object linker

  • apply :: Bool
    a
  • stm :: Bool
    m
  • squeeze :: Bool

    z stack squeezing & lazy blackholing

  • hpc :: Bool

    c coverage

  • sparks :: Bool
    r
Instances
Instances details
Generic DebugFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep DebugFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DebugFlags = D1 ('MetaData "DebugFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "DebugFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "scheduler") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "interpreter") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "weak") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "gccafs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "gc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "nonmoving_gc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "block_alloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sanity") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: (((S1 ('MetaSel ('Just "stable") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "prof") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "linker") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "apply") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "stm") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "squeeze") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "hpc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sparks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))))

Methods

from :: DebugFlags -> Rep DebugFlags x Source

to :: Rep DebugFlags x -> DebugFlags Source

Show DebugFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> DebugFlags -> ShowS Source

show :: DebugFlags -> String Source

showList :: [DebugFlags] -> ShowS Source

type Rep DebugFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DebugFlags = D1 ('MetaData "DebugFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "DebugFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "scheduler") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "interpreter") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "weak") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "gccafs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "gc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "nonmoving_gc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "block_alloc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sanity") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))) :*: (((S1 ('MetaSel ('Just "stable") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "prof") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "linker") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "apply") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "stm") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "squeeze") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "hpc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sparks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))))

data DoCostCentres Source

Should the RTS produce a cost-center summary?

Since: base-4.8.2.0

Constructors

CostCentresNone
CostCentresSummary
CostCentresVerbose
CostCentresAll
CostCentresJSON
Instances
Instances details
Generic DoCostCentres Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep DoCostCentres

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoCostCentres = D1 ('MetaData "DoCostCentres" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) ((C1 ('MetaCons "CostCentresNone" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CostCentresSummary" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "CostCentresVerbose" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "CostCentresAll" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CostCentresJSON" 'PrefixI 'False) (U1 :: Type -> Type))))

Methods

from :: DoCostCentres -> Rep DoCostCentres x Source

to :: Rep DoCostCentres x -> DoCostCentres Source

Show DoCostCentres Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> DoCostCentres -> ShowS Source

show :: DoCostCentres -> String Source

showList :: [DoCostCentres] -> ShowS Source

type Rep DoCostCentres Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoCostCentres = D1 ('MetaData "DoCostCentres" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) ((C1 ('MetaCons "CostCentresNone" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CostCentresSummary" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "CostCentresVerbose" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "CostCentresAll" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "CostCentresJSON" 'PrefixI 'False) (U1 :: Type -> Type))))

data CCFlags Source

Parameters pertaining to the cost-center profiler.

Since: base-4.8.0.0

Constructors

CCFlags

Fields

  • doCostCentres :: DoCostCentres
  • profilerTicks :: Int
  • msecsPerTick :: Int
Instances
Instances details
Generic CCFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep CCFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep CCFlags = D1 ('MetaData "CCFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "CCFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "doCostCentres") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoCostCentres) :*: (S1 ('MetaSel ('Just "profilerTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: S1 ('MetaSel ('Just "msecsPerTick") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int))))

Methods

from :: CCFlags -> Rep CCFlags x Source

to :: Rep CCFlags x -> CCFlags Source

Show CCFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> CCFlags -> ShowS Source

show :: CCFlags -> String Source

showList :: [CCFlags] -> ShowS Source

type Rep CCFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep CCFlags = D1 ('MetaData "CCFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "CCFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "doCostCentres") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoCostCentres) :*: (S1 ('MetaSel ('Just "profilerTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int) :*: S1 ('MetaSel ('Just "msecsPerTick") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Int))))

data DoHeapProfile Source

What sort of heap profile are we collecting?

Since: base-4.8.2.0

Constructors

NoHeapProfiling
HeapByCCS
HeapByMod
HeapByDescr
HeapByType
HeapByRetainer
HeapByLDV
HeapByClosureType
HeapByInfoTable
HeapByEra

Since: base-4.20.0.0
Instances
Instances details
Generic DoHeapProfile Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep DoHeapProfile

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoHeapProfile = D1 ('MetaData "DoHeapProfile" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (((C1 ('MetaCons "NoHeapProfiling" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByCCS" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "HeapByMod" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "HeapByDescr" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByType" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: ((C1 ('MetaCons "HeapByRetainer" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByLDV" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "HeapByClosureType" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "HeapByInfoTable" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByEra" 'PrefixI 'False) (U1 :: Type -> Type)))))

Methods

from :: DoHeapProfile -> Rep DoHeapProfile x Source

to :: Rep DoHeapProfile x -> DoHeapProfile Source

Show DoHeapProfile Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> DoHeapProfile -> ShowS Source

show :: DoHeapProfile -> String Source

showList :: [DoHeapProfile] -> ShowS Source

type Rep DoHeapProfile Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoHeapProfile = D1 ('MetaData "DoHeapProfile" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (((C1 ('MetaCons "NoHeapProfiling" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByCCS" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "HeapByMod" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "HeapByDescr" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByType" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: ((C1 ('MetaCons "HeapByRetainer" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByLDV" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "HeapByClosureType" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "HeapByInfoTable" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "HeapByEra" 'PrefixI 'False) (U1 :: Type -> Type)))))

data ProfFlags Source

Parameters of the cost-center profiler

Since: base-4.8.0.0

Constructors

ProfFlags

Fields

  • doHeapProfile :: DoHeapProfile
  • heapProfileInterval :: RtsTime

    time between samples

  • heapProfileIntervalTicks :: Word

    ticks between samples (derived)

  • startHeapProfileAtStartup :: Bool
  • startTimeProfileAtStartup :: Bool

    Since: base-4.20.0.0

  • showCCSOnException :: Bool
  • automaticEraIncrement :: Bool

    Since: base-4.20.0.0

  • maxRetainerSetSize :: Word
  • ccsLength :: Word
  • modSelector :: Maybe String
  • descrSelector :: Maybe String
  • typeSelector :: Maybe String
  • ccSelector :: Maybe String
  • ccsSelector :: Maybe String
  • retainerSelector :: Maybe String
  • bioSelector :: Maybe String
  • eraSelector :: Word

    Since: base-4.20.0.0

Instances
Instances details
Generic ProfFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep ProfFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ProfFlags = D1 ('MetaData "ProfFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ProfFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "doHeapProfile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoHeapProfile) :*: S1 ('MetaSel ('Just "heapProfileInterval") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime)) :*: (S1 ('MetaSel ('Just "heapProfileIntervalTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "startHeapProfileAtStartup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "startTimeProfileAtStartup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "showCCSOnException") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "automaticEraIncrement") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "maxRetainerSetSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))) :*: (((S1 ('MetaSel ('Just "ccsLength") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "modSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String))) :*: (S1 ('MetaSel ('Just "descrSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "typeSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)))) :*: ((S1 ('MetaSel ('Just "ccSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "ccsSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String))) :*: (S1 ('MetaSel ('Just "retainerSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: (S1 ('MetaSel ('Just "bioSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "eraSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))))))

Methods

from :: ProfFlags -> Rep ProfFlags x Source

to :: Rep ProfFlags x -> ProfFlags Source

Show ProfFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> ProfFlags -> ShowS Source

show :: ProfFlags -> String Source

showList :: [ProfFlags] -> ShowS Source

type Rep ProfFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ProfFlags = D1 ('MetaData "ProfFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ProfFlags" 'PrefixI 'True) ((((S1 ('MetaSel ('Just "doHeapProfile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoHeapProfile) :*: S1 ('MetaSel ('Just "heapProfileInterval") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 RtsTime)) :*: (S1 ('MetaSel ('Just "heapProfileIntervalTicks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "startHeapProfileAtStartup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "startTimeProfileAtStartup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "showCCSOnException") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "automaticEraIncrement") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "maxRetainerSetSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))) :*: (((S1 ('MetaSel ('Just "ccsLength") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word) :*: S1 ('MetaSel ('Just "modSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String))) :*: (S1 ('MetaSel ('Just "descrSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "typeSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)))) :*: ((S1 ('MetaSel ('Just "ccSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "ccsSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String))) :*: (S1 ('MetaSel ('Just "retainerSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: (S1 ('MetaSel ('Just "bioSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe String)) :*: S1 ('MetaSel ('Just "eraSelector") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word)))))))

data DoTrace Source

Is event tracing enabled?

Since: base-4.8.2.0

Constructors

TraceNone

no tracing
TraceEventLog

send tracing events to the event log
TraceStderr

send tracing events to stderr
Instances
Instances details
Generic DoTrace Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep DoTrace

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoTrace = D1 ('MetaData "DoTrace" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TraceNone" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "TraceEventLog" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TraceStderr" 'PrefixI 'False) (U1 :: Type -> Type)))

Methods

from :: DoTrace -> Rep DoTrace x Source

to :: Rep DoTrace x -> DoTrace Source

Show DoTrace Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> DoTrace -> ShowS Source

show :: DoTrace -> String Source

showList :: [DoTrace] -> ShowS Source

type Rep DoTrace Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep DoTrace = D1 ('MetaData "DoTrace" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TraceNone" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "TraceEventLog" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "TraceStderr" 'PrefixI 'False) (U1 :: Type -> Type)))

data TraceFlags Source

Parameters pertaining to event tracing

Since: base-4.8.0.0

Constructors

TraceFlags

Fields

  • tracing :: DoTrace
  • timestamp :: Bool

    show timestamp in stderr output

  • traceScheduler :: Bool

    trace scheduler events

  • traceGc :: Bool

    trace GC events

  • traceNonmovingGc :: Bool

    trace nonmoving GC heap census samples

  • sparksSampled :: Bool

    trace spark events by a sampled method

  • sparksFull :: Bool

    trace spark events 100% accurately

  • user :: Bool

    trace user events (emitted from Haskell code)

Instances
Instances details
Generic TraceFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep TraceFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep TraceFlags = D1 ('MetaData "TraceFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TraceFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "tracing") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoTrace) :*: S1 ('MetaSel ('Just "timestamp") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "traceScheduler") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "traceGc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "traceNonmovingGc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sparksSampled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "sparksFull") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "user") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))))

Methods

from :: TraceFlags -> Rep TraceFlags x Source

to :: Rep TraceFlags x -> TraceFlags Source

Show TraceFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> TraceFlags -> ShowS Source

show :: TraceFlags -> String Source

showList :: [TraceFlags] -> ShowS Source

type Rep TraceFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep TraceFlags = D1 ('MetaData "TraceFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TraceFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "tracing") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DoTrace) :*: S1 ('MetaSel ('Just "timestamp") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "traceScheduler") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "traceGc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))) :*: ((S1 ('MetaSel ('Just "traceNonmovingGc") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "sparksSampled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "sparksFull") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "user") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))))

data TickyFlags Source

Parameters pertaining to ticky-ticky profiler

Since: base-4.8.0.0

Constructors

TickyFlags

Fields

  • showTickyStats :: Bool
  • tickyFile :: Maybe FilePath
Instances
Instances details
Generic TickyFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep TickyFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep TickyFlags = D1 ('MetaData "TickyFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TickyFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "showTickyStats") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "tickyFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe FilePath))))

Methods

from :: TickyFlags -> Rep TickyFlags x Source

to :: Rep TickyFlags x -> TickyFlags Source

Show TickyFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> TickyFlags -> ShowS Source

show :: TickyFlags -> String Source

showList :: [TickyFlags] -> ShowS Source

type Rep TickyFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep TickyFlags = D1 ('MetaData "TickyFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "TickyFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "showTickyStats") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "tickyFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Maybe FilePath))))

data ParFlags Source

Parameters pertaining to parallelism

Since: base-4.8.0.0

Constructors

ParFlags

Fields

  • nCapabilities :: Word32
  • migrate :: Bool
  • maxLocalSparks :: Word32
  • parGcEnabled :: Bool
  • parGcGen :: Word32
  • parGcLoadBalancingEnabled :: Bool
  • parGcLoadBalancingGen :: Word32
  • parGcNoSyncWithIdle :: Word32
  • parGcThreads :: Word32
  • setAffinity :: Bool
Instances
Instances details
Generic ParFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep ParFlags

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ParFlags = D1 ('MetaData "ParFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ParFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "nCapabilities") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "migrate") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "maxLocalSparks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "parGcEnabled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "parGcGen") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))) :*: ((S1 ('MetaSel ('Just "parGcLoadBalancingEnabled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "parGcLoadBalancingGen") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "parGcNoSyncWithIdle") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "parGcThreads") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "setAffinity") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))))

Methods

from :: ParFlags -> Rep ParFlags x Source

to :: Rep ParFlags x -> ParFlags Source

Show ParFlags Source

Since: base-4.8.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> ParFlags -> ShowS Source

show :: ParFlags -> String Source

showList :: [ParFlags] -> ShowS Source

type Rep ParFlags Source

Since: base-4.15.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep ParFlags = D1 ('MetaData "ParFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "ParFlags" 'PrefixI 'True) (((S1 ('MetaSel ('Just "nCapabilities") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "migrate") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)) :*: (S1 ('MetaSel ('Just "maxLocalSparks") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "parGcEnabled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "parGcGen") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)))) :*: ((S1 ('MetaSel ('Just "parGcLoadBalancingEnabled") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "parGcLoadBalancingGen") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32)) :*: (S1 ('MetaSel ('Just "parGcNoSyncWithIdle") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: (S1 ('MetaSel ('Just "parGcThreads") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word32) :*: S1 ('MetaSel ('Just "setAffinity") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool))))))

data HpcFlags Source

Parameters pertaining to Haskell program coverage (HPC)

Since: base-4.20.0.0

Constructors

HpcFlags

Fields

  • readTixFile :: Bool

    Controls whether a program.tix file is read at the start of execution to initialize the RTS internal HPC datastructures.

  • writeTixFile :: Bool

    Controls whether the program.tix file should be written after the execution of the program.

Instances
Instances details
Generic HpcFlags Source
Instance details

Defined in GHC.RTS.Flags

Associated Types

type Rep HpcFlags

Since: base-4.20.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep HpcFlags = D1 ('MetaData "HpcFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "HpcFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "readTixFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "writeTixFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))

Methods

from :: HpcFlags -> Rep HpcFlags x Source

to :: Rep HpcFlags x -> HpcFlags Source

Show HpcFlags Source

Since: base-4.20.0.0
Instance details

Defined in GHC.RTS.Flags

Methods

showsPrec :: Int -> HpcFlags -> ShowS Source

show :: HpcFlags -> String Source

showList :: [HpcFlags] -> ShowS Source

type Rep HpcFlags Source

Since: base-4.20.0.0
Instance details

Defined in GHC.RTS.Flags

type Rep HpcFlags = D1 ('MetaData "HpcFlags" "GHC.RTS.Flags" "base-4.22.0.0-66f8" 'False) (C1 ('MetaCons "HpcFlags" 'PrefixI 'True) (S1 ('MetaSel ('Just "readTixFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool) :*: S1 ('MetaSel ('Just "writeTixFile") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Bool)))

data IoSubSystem Source

The I/O SubSystem to use in the program.

Since: base-4.9.0.0

Constructors

IoPOSIX

Use a POSIX I/O Sub-System
IoNative

Use platform native Sub-System. For unix OSes this is the same as IoPOSIX, but on Windows this means use the Windows native APIs for I/O, including IOCP and RIO.
Instances
Instances details
Eq IoSubSystem Source
Instance details

Defined in GHC.Internal.IO.SubSystem

Methods

(==) :: IoSubSystem -> IoSubSystem -> Bool Source

(/=) :: IoSubSystem -> IoSubSystem -> Bool Source

Enum IoSubSystem Source
Instance details

Defined in GHC.Internal.IO.SubSystem

Methods

succ :: IoSubSystem -> IoSubSystem Source

pred :: IoSubSystem -> IoSubSystem Source

toEnum :: Int -> IoSubSystem Source

fromEnum :: IoSubSystem -> Int Source

enumFrom :: IoSubSystem -> [IoSubSystem] Source

enumFromThen :: IoSubSystem -> IoSubSystem -> [IoSubSystem] Source

enumFromTo :: IoSubSystem -> IoSubSystem -> [IoSubSystem] Source

enumFromThenTo :: IoSubSystem -> IoSubSystem -> IoSubSystem -> [IoSubSystem] Source

Show IoSubSystem Source
Instance details

Defined in GHC.Internal.IO.SubSystem

Methods

showsPrec :: Int -> IoSubSystem -> ShowS Source

show :: IoSubSystem -> String Source

showList :: [IoSubSystem] -> ShowS Source

getRTSFlags :: IO RTSFlags Source

getGCFlags :: IO GCFlags Source

getConcFlags :: IO ConcFlags Source

getMiscFlags :: IO MiscFlags Source

getDebugFlags :: IO DebugFlags Source

getCCFlags :: IO CCFlags Source

getProfFlags :: IO ProfFlags Source

getTraceFlags :: IO TraceFlags Source

getTickyFlags :: IO TickyFlags Source

getParFlags :: IO ParFlags Source

getHpcFlags :: IO HpcFlags Source

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/9.14.1/docs/libraries/base-4.22.0.0-66f8/GHC-RTS-Flags.html

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