Add GHC.Stats.gcStatsEnabled
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
.
Trac metadata
Trac field | Value |
---|---|
Version | 7.4.1 |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | libraries (other) |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | ezyang |
Operating system | |
Architecture |