Date: Thu, 12 Feb 2004 11:04:17 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Craig Rodrigues <rodrigc@crodrigues.org> Cc: freebsd-threads@freebsd.org Subject: Re: Should ps -p list threads? Message-ID: <Pine.BSF.4.21.0402121102570.10555-100000@InterJet.elischer.org> In-Reply-To: <20040212171101.GA72641@crodrigues.org>
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On Thu, 12 Feb 2004, Craig Rodrigues wrote:
> On Thu, Feb 12, 2004 at 11:16:57AM -0500, Daniel Eischen wrote:
> > But 'ps' without -H seems to display KSEs where it shouldn't.
>
> I looked in the source code of ps,
> specifically in src/bin/ps/ps.c
>
> If you type just 'ps', this code gets executed in ps.c:
>
> 351 if (nuids == 1) {
> 352 what = KERN_PROC_UID;
> 353 flag = *uids;
> 354 }
>
> 371 if ((kp = kvm_getprocs(kd, what, flag, &nentries)) == 0 || nentr
> ies < 0)
> 372 errx(1, "%s", kvm_geterr(kd));
>
>
>
> If you type 'ps -H', this code gets executed in ps.c:
>
> 194 case 'H':
> 195 showthreads = 1;
> 196 break;
>
> 351 if (nuids == 1) {
> 352 what = KERN_PROC_UID;
> 353 flag = *uids;
>
> 371 if ((kp = kvm_getprocs(kd, what, flag, &nentries)) == 0 || nentries < 0)
> 372 errx(1, "%s", kvm_geterr(kd));
>
>
The origianlpatch had _H show threads and normal ps did not..
I don't know why this is as it is...
>
>
> So, I am not sure if this is a bug in kvm_getprocs() or in ps.c,
> but the result is that if you type ps or ps -H, they
> both display KSEs. Probably just typing ps should not display
> them.
>
> Any idea what the problem is?
> --
> Craig Rodrigues
> http://crodrigues.org
> rodrigc@crodrigues.org
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