I'm aware of its lineage but there's really precious little left from its BSD origins.
https://github.com/apple-oss-distributions/xnu/tree
You'll find there's a great deal left. Have a look at all the fundamental datastructures (proc, vnode, tty, file to name a few) for a starting point.
alt Hacker News
https://github.com/apple-oss-distributions/xnu/tree
You'll find there's a great deal left. Have a look at all the fundamental datastructures (proc, vnode, tty, file to name a few) for a starting point.