On Apr 20, 2008, at 15:41 , Andrew Coppin wrote:
1. Does running the GC force all threads to stop? I know some GC
designs do this, but I have no idea how the one GHC implements works.
2. Is the GC still single-threaded? (GHC 6.8.2 here.)
Full GC is single-threaded and stops the entire program, yes. IIRC
GHC's runtime tries to do incremental GC to minimize the need for a
full GC.
3. Is there any way for a running Haskell program to find out how
much heap space is currently allocated / used / free? I know you
can find out how much wall time and CPU time you've used, but I
couldn't find anything for RAM usage.
You're looking for "heap profiling" in the GHC manual.
--
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [EMAIL PROTECTED]
system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED]
electrical and computer engineering, carnegie mellon university KF8NH
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