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From: John Baldwin <jhb@freebsd.org>
To: freebsd-net@freebsd.org
Subject: Re: Does pthread_set_name_np() work?
Date: Tue, 3 Sep 2013 16:06:55 -0400
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 (bigwig.baldwin.cx); Tue, 03 Sep 2013 16:23:30 -0400 (EDT)
Cc: Laurie Jennings <laurie_jennings_1977@yahoo.com>
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On Wednesday, August 21, 2013 12:36:09 pm Laurie Jennings wrote:
> Im trying to set the names of threads so I can distinguish them in top -H, 
but it doesn't seem to 
> take the thread id as valid.
> 
> err=pthread_set_name_np(pthread_self(),"FOO");

This function returns void, not an error, so you can't trust the return value.

-- 
John Baldwin