From: Avi Kivity <avi@redhat.com>
To: Michael Goldish <mgoldish@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>, KVM list <kvm@vger.kernel.org>
Subject: Re: [autotest] vm creation fails (not)
Date: Wed, 05 Aug 2009 19:02:49 +0300 [thread overview]
Message-ID: <4A79AD29.40407@redhat.com> (raw)
In-Reply-To: <137563426.1515521249487326121.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
On 08/05/2009 06:48 PM, Michael Goldish wrote:
>
>
>> You should use wait() to find out if the process is alive, not tricks
>> with the PID and process name, which are racy as you found out.
>>
>
> I'm not sure I can do that because the process I'm interested in isn't a
> child of mine.
>
It should be somebody's child and that somebody should wait for it.
> In any case, I'd still need to use the process name to make sure the PID
> belongs to the original process, because PIDs are reused after a while.
>
waitpid() solves that problem without using the process name. This
isn't a new problem, you should use the established solutions.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-08-05 15:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <938753791.1515401249487180985.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2009-08-05 15:48 ` [autotest] vm creation fails (not) Michael Goldish
2009-08-05 15:58 ` Gerd Hoffmann
2009-08-05 16:02 ` Avi Kivity [this message]
[not found] <798406659.1555201249555283903.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2009-08-06 10:43 ` Michael Goldish
2009-08-06 11:33 ` Avi Kivity
[not found] <87671503.1527311249497775045.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2009-08-05 18:47 ` Michael Goldish
2009-08-06 10:23 ` Avi Kivity
[not found] <1912575528.1512971249485400261.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2009-08-05 15:21 ` Michael Goldish
[not found] <657495968.1491511249467149457.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
2009-08-05 10:16 ` Michael Goldish
2009-08-05 12:53 ` Gerd Hoffmann
2009-08-05 13:12 ` Michael Goldish
2009-08-05 13:21 ` Gerd Hoffmann
2009-08-05 14:05 ` Michael Goldish
2009-08-05 14:52 ` Gerd Hoffmann
2009-08-05 15:43 ` Avi Kivity
2009-08-05 9:45 Gerd Hoffmann
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