My current speed-testing validating technique

[Ian Lynagh]

On Sun, Aug 12, 2007 at 02:43:20PM -0700, Stefan O'Rear wrote:
> On Sun, Aug 12, 2007 at 09:00:34PM +0100, Ian Lynagh wrote:
> > On Sun, Aug 12, 2007 at 08:37:44PM +0100, Simon Marlow wrote:
> > > 
> > > Aargh!  That's the data from ghc-inplace, not ghc itself.  Since 
> > > ghc-inplace became a Haskell program, it's harder to get it to recognise 
> > > +RTS options.  Supposedly ghc-inplace passes the +RTS options through to 
> > > ghc itself, but for some reason -sstderr isn't getting through (perhaps 
> > > others aren't getting through, we should investigate).
> > 
> > It is, but ghc-inplace also sees it, so we get both reports:
> > 
> > $ compiler/stage2/ghc-inplace +RTS -sstderr 2>&1 | grep allocated
> >  64,907,200 bytes allocated in the heap
> >      46,968 bytes allocated in the heap
> > 
> > Hmm, perhaps we need a better hack.
> 
> How about bypassing shutdownHaskellAndExit, perhaps by some variation on
> 
> foreign import unsafe ccall "stdlib.h _Exit" exitNow :: CInt -> IO ()
> 
> (System.Posix.Process.exitImmediately would also work, but I suspect GHC
> runs on more non-POSIX systems than non-C99 systems.)

I meant for all flags, not only this one. Maybe we should just use a
small C program instead.


Thanks
Ian