Am 08.12.2009 um 15:41 schrieb Otto Moerbeek:

quoted text
> Nobody did the work yet. If it's very important to you, consider
> spending effort making it thread safe. I believe netbsd and freebsd
> have thread safe implementations. But actullay verifying that is
> pretty hard.

Yes, the NetBSD implementation is thread-safe since 4.0. For FreeBSD,  
I don't know since which version it is thread-safe, but it's thread- 
safe in recent versions.

For the verifying part: If the implementation has no side-effects  
(like modifying some global variable that is not per-thread), the  
implementation is thread-safe.

--
Jonathan