Looks like a good start. I'm not actually sure I'd use it on windows however. CPPWinrt has a really decent coroutine support library with tools like winrt::resume_background() [1], I use it extensively even in desktop apps because it makes using the windows threadpool (which is active by default for all windows processes since at least windows 7) trivial. I've basically moved most of my threading code onto that unless I need a dedicated thread to hold a context for some reason. But, that's a windows specific thing as far as I know.

[1] https://learn.microsoft.com/en-us/uwp/cpp-ref-for-winrt/resu...