From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-37733-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 32264 invoked by alias); 29 Jul 2010 02:21:08 -0000
Received: (qmail 32247 invoked by uid 22791); 29 Jul 2010 02:21:06 -0000
X-SWARE-Spam-Status: No, hits=-1.0 required=5.0	tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KAM_STOCKGEN
X-Spam-Check-By: sourceware.org
Received: from mail-wy0-f169.google.com (HELO mail-wy0-f169.google.com) (74.125.82.169)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 29 Jul 2010 02:21:01 +0000
Received: by wyg36 with SMTP id 36so26763wyg.0        for <gdb@sourceware.org>; Wed, 28 Jul 2010 19:20:59 -0700 (PDT)
Received: by 10.216.164.141 with SMTP id c13mr11413752wel.83.1280370059426; 	Wed, 28 Jul 2010 19:20:59 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.216.186.205 with HTTP; Wed, 28 Jul 2010 19:20:39 -0700 (PDT)
In-Reply-To: <F7CE05678329534C957159168FA70DEC5716BC276A@EUSAACMS0703.eamcs.ericsson.se>
References: <F7CE05678329534C957159168FA70DEC5716B5EE01@EUSAACMS0703.eamcs.ericsson.se> 	<AANLkTinwS-wqdkDuf3zc6+c71CogT70WvmF=dMOMnL_T@mail.gmail.com> 	<F7CE05678329534C957159168FA70DEC5716BC276A@EUSAACMS0703.eamcs.ericsson.se>
From: Hui Zhu <teawater@gmail.com>
Date: Thu, 29 Jul 2010 02:21:00 -0000
Message-ID: <AANLkTikMTxGUHFXx-QG=H3d+EePU03xmueegT7BZRmPk@mail.gmail.com>
Subject: Re: Command for number of cores
To: Marc Khouzam <marc.khouzam@ericsson.com>
Cc: "gdb@sourceware.org" <gdb@sourceware.org>
Content-Type: text/plain; charset=ISO-8859-1
X-IsSubscribed: yes
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2010-07/txt/msg00115.txt.bz2

On Thu, Jul 29, 2010 at 03:02, Marc Khouzam <marc.khouzam@ericsson.com> wrote:
>> -----Original Message-----
>> From: Hui Zhu [mailto:teawater@gmail.com]
>> Sent: Tuesday, July 27, 2010 10:05 PM
>> To: Marc Khouzam
>> Cc: gdb@sourceware.org
>> Subject: Re: Command for number of cores
>>
>> p sysconf(_SC_NPROCESSORS_CONF)
>
> How do I get GDB to know about the symbol _SC_NPROCESSORS_CONF?
>
> And when I call sysconf() does it execute on the host or the target?

This command will let inferior call function sysconf(_SC_NPROCESSORS_CONF).
_SC_NPROCESSORS_CONF is a enum.  In my pc, it's 83.  You can run a
small program that have "printf ("%d", _SC_NPROCESSORS_CONF);" to get
it's value in your target.

I try "p sysconf(83)" in my part.  It works OK.

Thanks,
Hui

>
> Thanks
>
>
>> On Wed, Jul 28, 2010 at 03:55, Marc Khouzam
>> <marc.khouzam@ericsson.com> wrote:
>> > Hi,
>> >
>> > I need a way to know how many cores are on my target (where
>> gdbserver is running).
>> > I'm wondering if GDB already has this information?
>> >
>> > If not, I was thinking of adding 'info cores' or 'show cores'.
>> > Or maybe a convenience variable '$numcores'?
>> >
>> > I'm thinking 'info cores'.
>> >
>> > If this makes sense, I'll give it a try.
>> >
>> > Thanks
>> >
>> > Marc
>> >
>>