alt Hacker NewsI developed for windows before moving to linux. I was surprised to find that was no system call similar to windows WaitForMultipleObjects. Sure you can implement something similar using poll() or using condition variables. but WaitForMultipleObjects seems so much simpler and more versatile
Replies
Epoll / select? since everything is a file, you can wait on everything.
A lot of that flexibility is what makes it hard to efficiently emulate (especially without kernel level support), but some of it seems too flexible to make sense as the default choice. How often does a video game really need a lock that can be shared between processes, and why should that lock type be the one that a game engine uses for almost all of its locks?
Its IO completion ports I miss.
The article mentions this: "A few years back, Linux added a way for software to wait on several events at once, which is something Windows had built in for decades, but Linux didn't."
This is not really my area, but from a quick web search, I think they mean io_uring. Here's a blog post about it: https://mazzo.li/posts/uring-multiplex.html