Re: bug or feature in userland thread library (O_NONBLOCK)
From: David Xu (davidxu_at_freebsd.org)
Date: 06/15/05
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Date: Wed, 15 Jun 2005 21:11:06 +0800 To: Luigi Rizzo <rizzo@icir.org>
Luigi Rizzo wrote:
>Probably a known issue, but I thought it worthwhile reporting it,
>if nothing else for archival purposes.
>
>I think our userland thread library (libc_r) has some bugs in
>handling descriptors. I can reproduce the behaviour on -current
>and 4.x, and I believe it applies to 5.x too.
>
>Following is a description of the problem and some code to replicate it
>The code includes a workaround but it is not particularly nice.
>
>Any better ideas ? I am not sure on what to do, but perhaps the
>only sensible thing to do is to add a note with this workaround
>(or better ones, if available) to our pthreads manpage
>
>
>
libc_r is deprecated on -CURRENT, I think start from 6.0, libc_r really
should be moved to ports. ;)
David Xu
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