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Asterinas: OS kernel written in Rust and providing Linux-compatible ABI

(github.com)
252 points Klasiaster | 1 comments | 15 Oct 24 12:01 UTC | HN request time: 0.219s | source
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akira2501 ◴[15 Oct 24 18:58 UTC] No.41851912[source]▶
I personally dislike rust, but I love kernels, and so I'll always check these projects out.

This is one of the nicer ones.

It looks pretty conservative in it's use of Rust's advanced features. The code looks pretty easy to read and follow. There's actually a decent amount of comments (for rust code).

Not bad!

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wg0 ◴[16 Oct 24 03:40 UTC] No.41855386[source]▶
Otherwise is a decent language but what makes it difficult is the borrow semantics and lifetimes. Lifetimes are more complicated to get your head around.

But then there's this Arc, Ref, Pinning and what not - how deep is that rabbit hole?

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1. oneshtein ◴[16 Oct 24 05:50 UTC] No.41855987[source]▶
Rust lifetime is just a label for a region of memory with various data, which is discarded at the end of its life time. When compiler enters a function, it creates a memory block to hold data of all variables in the function, and then discards this block at the exit from the function, so these variables are valid for life time of the function call only.