[amelius]

I'm curious if it can be done in Rust entirely though. Maybe some assembly instructions are required e.g. for trapping or setting memory fences.

[nicoburns]

If it comes to it then Rust has excellent support for inline assembly

[amelius]

But how well does it play with memory fences?

[steveklabnik]

You don’t even need inline assembly for those https://doc.rust-lang.org/stable/std/sync/atomic/fn.fence.ht...