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Date:      Tue, 09 Nov 2010 00:47:33 -0500
From:      Joe Marcus Clarke <marcus@freebsd.org>
To:        Andriy Gapon <avg@freebsd.org>
Cc:        gnome@freebsd.org, bug-followup@freebsd.org
Subject:   Re: ports/151725: sysutils/hal: hald fails to start with dbus-1.4
Message-ID:  <4CD8E075.9090901@freebsd.org>
In-Reply-To: <4CD8DDCD.3010902@freebsd.org>
References:  <20101109001442.F27651CC0E@ptavv.es.net> <4CD8DDCD.3010902@freebsd.org>

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On 11/9/10 12:36 AM, Andriy Gapon wrote:
> on 09/11/2010 02:14 Kevin Oberman said the following:
>> I'll try this as soon as I can. I'm not too sure that it will happen as
>> I think that this is somehow timing related. I suspect that the entry is
>> disappearing too quickly with 1.4 in some cases but is not a problem
>> with 1.2. Perhaps some optimization? 
>>
>> I suggest this because on at least rare occasion, 1.4 did run
>> successfully, not because I have any clue what was happening under the
>> covers. 
> 
> I guess that I already explained this part.
> The problem happened because we tried to write something (even if it's just zero
> sized something) into stdin of a child process that already exited.
> Sometimes the child process was quicker, sometimes the parent process was
> quicker, hence the non-determinism.
> 

Ah, I missed that.  I wonder if it would be safer then to ignore SIGPIPE
around the write block.

Joe

-- 
Joe Marcus Clarke
FreeBSD GNOME Team	::	gnome@FreeBSD.org
FreeNode / #freebsd-gnome
http://www.FreeBSD.org/gnome



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