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From: Alexander Terekhov <terekhov@web.de>
Newsgroups: comp.programming.threads
Subject: Re: Thread safe logging (or protecting global variables)
Date: Thu, 15 Sep 2011 12:50:41 +0200
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Joshua Maurice wrote:

[... http://lists.boost.org/Archives/boost/2001/08/15363.php ...]

> TLS is a relatively rare precious resource (only ~1000 keys 
> available on most systems IIRC), so I'm slightly cautious where 
> I use TLS. 

Several years after 2001 Mike Burrows of Google came up with an
optimized solution to use only one TLS key for very many lazy inits:

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2382.html

regards,
alexander.