Safe Haskell	Safe-Inferred
Language	Haskell2010

GHC.Debug.Trace

Description

Functions to support the constant space traversal of a heap.

Synopsis

traceFromM :: C m => TraceFunctions m -> [ClosurePtr] -> m DebugM ()
data TraceFunctions m = TraceFunctions {
- papTrace :: !(GenPapPayload ClosurePtr -> m DebugM ())
- stackTrace :: !(GenStackFrames ClosurePtr -> m DebugM ())
- closTrace :: !(ClosurePtr -> SizedClosure -> m DebugM () -> m DebugM ())
- visitedVal :: !(ClosurePtr -> m DebugM ())
- conDescTrace :: !(ConstrDesc -> m DebugM ())
}

Documentation

traceFromM :: C m => TraceFunctions m -> [ClosurePtr] -> m DebugM () Source #

A generic heap traversal function which will use a small amount of memory linear in the heap size. Using this function with appropiate accumulation functions you should be able to traverse quite big heaps in not a huge amount of memory.

data TraceFunctions m Source #

Constructors

TraceFunctions
Fields papTrace :: !(GenPapPayload ClosurePtr -> m DebugM ()) stackTrace :: !(GenStackFrames ClosurePtr -> m DebugM ()) closTrace :: !(ClosurePtr -> SizedClosure -> m DebugM () -> m DebugM ()) visitedVal :: !(ClosurePtr -> m DebugM ()) conDescTrace :: !(ConstrDesc -> m DebugM ())