pthread weak symbols

[Nikos Mavrogiannopoulos]

On Wed, 2015-12-09 at 15:20 -0800, Matt Turner wrote:
> I'm interested in avoiding pthread/locking overhead in Mesa
> (http://mesa3d.org/) when the application is not using threads.
> 
> I've read about glibc's weak pthread symbols that are intended to
> solve this problem, but I've also read on this list that they weren't
> a good idea and have some (unknown to me) problems.
> 
> Can I get some clarification about what problems there are with the
> weak pthread symbols, and perhaps some suggested alternative
> solutions?


One catch I've noticed with the pthread locking symbols in libc is that
they only work for non-recursive mutexes. If your project requires a
recursive mutex you couldn't use them.

regards,
Nikos

PS. a more detailed description at: https://bugzilla.redhat.com/show_bug.cgi?id=1241075