I will have low overhead pthread library available soon, for
simple mutex, it is only an atomic_cmpset_long() plus a function
call (pthread_mutex_lock) overhead.
Petri Helenius wrote:
I have some low-contention mutexes which I'm trying to make perform
better and I'm wondering if the current threading library does have some
primitives I could use or if I'm better off using atomic_cmpset_* and
pthread_yield() if the thread hit's contention (which should be about
1:10000 of the lock/unlock operation).
Any scheduling caveats from above, except obviously it would spin while
waiting for the lock. Most systems I plan on running this on have
I remember there were some discussion about dropping i386 compatible
support for mutexes and using atomic operations instead. Is there
code/compile time options for this on a branch I could check out and
give it a spin?