Felipe Paulo Guazzi Bergo <[EMAIL PROTECTED]> wrote in list.freebsd-hackers:
> I am the author of gPS (http://gps.seul.org) and I'm trying to finish the
> FreeBSD native poller. All I need now is a routine to get the CPU usage.
> [...]
> I've already looked at the source of top but couldn't get much from there.
I'd recommend that you look at the vmstat source, located at
/usr/src/usr.bin/vmstat.c. In particular, look at the line
kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time));
Then look up the definition of kread() in the same file, and
how the contents of cur.cp_time are used in the cpustats()
function. Note that "cur" is a "struct statinfo", which is
defined in /usr/include/devstat.h. The CPU states are defined
in /usr/include/sys/dkstat.h.
That should get you going. :-)
Regards
Oliver
--
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
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"In jedem St�ck Kohle wartet ein Diamant auf seine Geburt"
(Terry Pratchett)
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