[Bug libobjc/47031] libobjc uses mutexes for properties

[js-gcc at webkeks dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47031

--- Comment #8 from js-gcc at webkeks dot org <js-gcc at webkeks dot org> 2011-01-08 16:14:28 UTC ---
Yeah, but Linux is just one of the many OSes supported by GCC. And I don't know
of any other OS that uses futexes fors pthread mutexes.

> It would still be good to try a worst-case benchmark of spinlocks in the highly 
> contended case.  I am assuming the performance would be really really bad, but
> then I may just be wrong. ;-)

As I said: I doubt it, as it's only 10 spins and then the control is given to
another thread.

Benchmarking Mutexes, Futexes and Spinlocks in the highligh contended case
would be interesting. I guess all three are almost equal in this case, but
differ a lot in the less contended case.