From owner-freebsd-arch  Mon Oct  1 20:25: 7 2001
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Date: Mon, 1 Oct 2001 22:24:51 -0500
From: Dan Nelson <dnelson@allantgroup.com>
To: Mike Silbersack <silby@silby.com>
Cc: freebsd-arch@FreeBSD.ORG
Subject: Re: Reading physical memory in a cross-platform way
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In the last episode (Oct 01), Mike Silbersack said:
> Right now I'm working on autoscaling files/procs/etc.  It's an easy
> job, except for one problem I keep bumping my head into: figuring out
> how much memory the system has.  It appears that for each
> architecture we store the size of physical memory in a different way,
> requiring conversion functions that are different for each
> architecture.  This makes my job difficult. :)
> 
> So, two questions:
> 
> 1.  Is there a variable / function which contains the size of memory
> across all platforms that I am missing?
> 
> 2.  If not, is there a problem if I add a u_int64_t containing the size of
> physical memory in bytes in machdep.c for each architecture?

It looks like 'physmem' (aka the hw.physmem sysctl) is defined the same
way on all the systems; are you looking for something else?

-- 
	Dan Nelson
	dnelson@allantgroup.com

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