epoll was a problem child API on linux, with a number of missteps early on. It's much better now. It does everything WFMO does and more. What disjoint APIs are you talking about? You can just use epoll and be done with it?

What are you talking about by "wait for both"?

But jesus, the windows API in this area is hot garbage. A hard 64 limit and O(N)? It's a terrible design.