#2191: A way to programmatically cause GHC to report the cost center stack
associated with a value
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Reporter: SamB | Owner:
Type: feature request | Status: new
Priority: normal | Component: Profiling
Version: 6.8.2 | Severity: normal
Keywords: | Testcase:
Architecture: Unknown | Os: Unknown
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I find that I often wish I could ask GHC to tell me "where did *that*
value come from?" as I debug JHC. Since GHC obviously can track this
information, it seems like it would be fairly simple to implement a way
for it to report this information as instructed by a running program.
Perhaps:
reportCssFor :: a -> b -> b
I wouldn't really have any desire to use this on thunks, since when I want
to do this it is usually because I don't like the value (i.e. it isn't in
the right normal form), and to know this I must already have evaluated it.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2191>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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