Show which CPU is executing a thread?

[nocturnal]

First of all thank you for your help Dan.

One last question though, does anyone have the structure of the kinfo_proc
struct? In kvm.h it seems to be defined transparently and i would very much
like to know where in this struct i can find the CPU ID.

2009/6/1 Dan Nelson <dnelson at allantgroup.com>

> In the last episode (Jun 01), nocturnal said:
> > 2009/6/1 nocturnal <swehack at gmail.com>
> > > I've been searching the web, all i want is to show which CPU is
> > > currently executing a certain thread.  Is this info available to me in
> > > user space?  Which manuals should i read to do this?
> > >
> > > I know Solaris has something about lwp that can show the last CPU used,
> > > i think.  I would be happy if FreeBSD had something similar so it
> > > doesn't have to be very live or accurate.
> > >
> > > Thank you in advance for any info or hints.
> >
> > I'm more after a programming API for this and when i search the web all i
> > find is people saying it cannot be done on FreeBSD in userspace, yet.
> >
> > Solaris and Linux can do it but FreeBSD doesn't have this in user space.
>
> FreeBSD can and does.  See the kvm_getprocs manpage, and take a look at
> /usr/src/bin/ps/ps.c or /usr/src/usr.bin/top/machine.c to see how it's
> used.
>
> > Is anyone working on it, what is the status? Will it be part of SMPng?
>
> SMPng went into FeeeBSD 5.0.. you must be reading some old mailing list
> archives :)
>
> --
>        Dan Nelson
>        dnelson at allantgroup.com
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-- 


Med vänliga hälsningar

Stefan Midjich aka nocturnal
[SWEHACK] http://swehack.se