#5846: Add GHC.Stats.gcStatsEnabled
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Reporter: tibbe | Owner:
Type: feature request | Status: new
Priority: normal | Component: libraries (other)
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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It would be nice if `GHC.Stats` exported a new, top-level constant,
`gcStatsEnabled :: Bool`, that's set to `True` if the program was run with
`RTS -T` or equivalent. In addition we could consider throwing an
exception if `getGCStats` was called when `gcStatsEnabled = False`. This
would let programs check if GC stats collection is enabled and still do
something reasonable if they're not. This would be useful in the `ekg`
package.
Open question: could the value of `+RTS -T` change at runtime? If so,
perhaps we instead want `getGCStatsEnabled :: IO Bool`.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5846>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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