Align structure to cache lines in Rust

Question

Assuming I wanted to use cache coherency to do read-free locks such as FaRM , it would be sufficient to have a structure with one 64-byte array as data to ensure that in an architecture with 64-byte cache lines each Will the structure occupy exactly one cache line?

Answer 1

No, this does not guarantee that alignment is a cache line.

There is currently no way to do this in Rust, although there is an open problem to implement#[repr(align = "64")] .