memory utilization via sysconf()

[davidb.hon]

Greetings all Rubyings,

Is there a direct way for a ruby app. to
check its memory utilization?

I have searched a while using various keywords
but have been unable to find any references.

I'm hoping to find core support analogous
to Python's "os.sysconf('SC_AVPHYS_PAGES')".

If such a thing is not available, I'll be
happy to write it, especially if we can get it
into the core spec.

Cheers,

--david