From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Schwab <schwab@linux-m68k.org>
Subject: Re: [PATCH v4] gc: reject if another gc is running, unless --force is given
Date: Sat, 10 Aug 2013 09:11:33 +0200
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Cc: Andres Perera <andres.p@zoho.com>,
	Git Mailing List <git@vger.kernel.org>,
	Ramkumar Ramachandra <artagnon@gmail.com>,
	Junio C Hamano <gitster@pobox.com>,
	Johannes Sixt <j6t@kdbg.org>
To: Duy Nguyen <pclouds@gmail.com>
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	(Duy Nguyen's message of "Sat, 10 Aug 2013 07:45:38 +0700")
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Duy Nguyen <pclouds@gmail.com> writes:

> On Fri, Aug 9, 2013 at 11:29 PM, Andres Perera <andres.p@zoho.com> wr=
ote:
>> On Thu, Aug 8, 2013 at 6:35 AM, Nguy=E1=BB=85n Th=C3=A1i Ng=E1=BB=8D=
c Duy <pclouds@gmail.com> wrote:
>>> +       uintmax_t pid;
>>
>> pid_t is always an signed type, therefore unintmax_t does not make
>> sense as a catch all value
>
> I only catch real process id. In practice we don't have processes wit=
h
> negative pid_t, do we? I can't find any document about this, but at
> least waitpid seems to treat negative pid (except -1) just as an
> indicator while the true pid is the positive counterpart.

Negative pids are used for denoting process groups in various
interfaces.  No process can have a negative pid.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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