ghc-7.7.20120902: The GHC API

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SMRep

Contents

Synopsis

Words and bytes

Closure repesentation

data SMRep Source

A description of the layout of a closure. Corresponds directly to the closure types in includesrtsstorage/ClosureTypes.h.

Instances

type IsStatic = BoolSource

True = This is a static closure. Affects how we garbage-collect it. Static closure have an extra static link field at the end.

data ClosureTypeInfo Source

Constructors

Constr ConstrTag ConstrDescription 
Fun FunArity ArgDescr 
Thunk 
ThunkSelector SelectorOffset 
BlackHole 

Construction

Predicates

Size-related things

fixedHdrSize :: DynFlags -> WordOffSource

Size of a closure header (StgHeader in includesrtsstorage/Closures.h)

profHdrSize :: DynFlags -> WordOffSource

Size of the profiling part of a closure header (StgProfHeader in includesrtsstorage/Closures.h)

RTS closure types

rtsClosureType :: SMRep -> StgHalfWordSource

Derives the RTS closure type from an SMRep

Operations over [Word8] strings that don't belong here