Safe Haskell	None
Language	Haskell2010

GHC.RTS.Flags

Description

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

Since: 4.8.0.0

Synopsis

Documentation

data RTSFlags Source

Constructors

RTSFlags
Fields gcFlags :: GCFlags concurrentFlags :: ConcFlags miscFlags :: MiscFlags debugFlags :: DebugFlags costCentreFlags :: CCFlags profilingFlags :: ProfFlags traceFlags :: TraceFlags tickyFlags :: TickyFlags

Instances

Show RTSFlags Source
Methods showsPrec :: Int -> RTSFlags -> ShowS Source show :: RTSFlags -> String Source showList :: [RTSFlags] -> ShowS Source

data GCFlags Source

Constructors

GCFlags

Fields

statsFile :: Maybe FilePath
giveStats :: GiveGCStats
maxStkSize :: Nat
initialStkSize :: Nat
stkChunkSize :: Nat
stkChunkBufferSize :: Nat
maxHeapSize :: Nat
minAllocAreaSize :: Nat
minOldGenSize :: Nat
heapSizeSuggestion :: Nat
heapSizeSuggestionAuto :: Bool
oldGenFactor :: Double
pcFreeHeap :: Double
generations :: Nat
steps :: Nat
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
frontpanel :: Bool
idleGCDelayTime :: Time
doIdleGC :: Bool
heapBase :: Word
address to ask the OS for memory
allocLimitGrace :: Word

Instances

Show GCFlags Source
Methods showsPrec :: Int -> GCFlags -> ShowS Source show :: GCFlags -> String Source showList :: [GCFlags] -> ShowS Source

data ConcFlags Source

Constructors

ConcFlags
Fields ctxtSwitchTime :: Time ctxtSwitchTicks :: Int

Instances

Show ConcFlags Source
Methods showsPrec :: Int -> ConcFlags -> ShowS Source show :: ConcFlags -> String Source showList :: [ConcFlags] -> ShowS Source

data MiscFlags Source

Constructors

MiscFlags
Fields tickInterval :: Time installSignalHandlers :: Bool machineReadable :: Bool linkerMemBase :: Word address to ask the OS for memory for the linker, 0 ==> off

Instances

Show MiscFlags Source
Methods showsPrec :: Int -> MiscFlags -> ShowS Source show :: MiscFlags -> String Source showList :: [MiscFlags] -> ShowS Source

data DebugFlags Source

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

Constructors

DebugFlags
Fields scheduler :: Bool `s` interpreter :: Bool `i` weak :: Bool `w` gccafs :: Bool `G` gc :: Bool `g` 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

Show DebugFlags Source
Methods showsPrec :: Int -> DebugFlags -> ShowS Source show :: DebugFlags -> String Source showList :: [DebugFlags] -> ShowS Source

data CCFlags Source

Constructors

CCFlags
Fields doCostCentres :: DoCostCentres profilerTicks :: Int msecsPerTick :: Int

Instances

Show CCFlags Source
Methods showsPrec :: Int -> CCFlags -> ShowS Source show :: CCFlags -> String Source showList :: [CCFlags] -> ShowS Source

data ProfFlags Source

Constructors

ProfFlags

Fields

doHeapProfile :: DoHeapProfile
heapProfileInterval :: Time
time between samples
heapProfileIntervalTicks :: Word
ticks between samples (derived)
includeTSOs :: Bool
showCCSOnException :: Bool
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

Instances

Show ProfFlags Source
Methods showsPrec :: Int -> ProfFlags -> ShowS Source show :: ProfFlags -> String Source showList :: [ProfFlags] -> ShowS Source

data TraceFlags Source

Constructors

TraceFlags
Fields tracing :: DoTrace timestamp :: Bool show timestamp in stderr output traceScheduler :: Bool trace scheduler events traceGc :: Bool trace GC events 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

Show TraceFlags Source
Methods showsPrec :: Int -> TraceFlags -> ShowS Source show :: TraceFlags -> String Source showList :: [TraceFlags] -> ShowS Source

data TickyFlags Source

Constructors

TickyFlags
Fields showTickyStats :: Bool tickyFile :: Maybe FilePath

Instances

Show TickyFlags Source
Methods showsPrec :: Int -> TickyFlags -> ShowS Source show :: TickyFlags -> String Source showList :: [TickyFlags] -> 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