Hi Michael and all,

When doing multithreaded programming, it is necessary to know the thread-safety
levels of the library functions. However, there is little thread-safety
information in current man-pages. And the lack of information often makes us
confused when programming in multithreaded environment.

If we could add information about functions' thread-safety levels based on
POSIX standard into man-pages, just like man-pages in Solaris, it will be
more helpful to programmers who are doing multithreaded programming with GLIBC. 

For function whose thread-safety level is clear, I have made several patches
which contain detailed descriptions of the thread-safety levels. The attached
patches can be as samples. If necessary, I will gradually make more patches
to enhance thread-safety information in man-pages. So what do you think?

I am looking forward to your feedback soon!

-- 
Best Regards,
Peng Haitao