I don't get it. Aren't most of these nsync tricks also implemented in glibc mutexes? The only thing in that list that's new to me, is long waiting. But even the

I don't get it. Aren't most of these nsync tricks also implemented in glibc mutexes? The only thing in that list that's new to me, is long waiting. But even then I don't get it: futexes are already supposed to handle contended waiting.