From: "Matthias Urlichs" <smurf@smurf.noris.de>
Date: Sat, 31 Jan 2004 16:51:55 +0100
To: bert hubert <ahu@ds9a.nl>, linux-kernel@vger.kernel.org
Subject: Re: BUG: NTPL: waitpid() doesn't return?
Message-ID: <20040131155155.GA1504@kiste>
References: <20040131104606.GA25534@kiste> <20040131153743.GA13834@outpost.ds9a.nl>
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Hi,

bert hubert:
> It might be that in the NPTL world only one waitpid() can run per process
> simultaneously?

Good call ...

> Do you wait for all pids or for a specific one?
> 
... looking at the strace output, I see that thre are four different
threads calling fork+child-exec/parent-waitpid() in parallel. The last
one actually succeeds, so you might be right with this analysis.

*Sigh* No matter how many people work at that code in the kernel, it's
_still_ fragile.  :-/

-- 
Matthias Urlichs     |     noris network AG     |     http://smurf.noris.de/
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