clf

Flush the cpu cache line by __builtin_clear_cache()

This crate can be used when you do benchmarks that are not dependent on the cpu cache.

Supports

• gcc and clang
• gnu and musl
• x86_64, aarch64, mips64el, powerpc64le ... etc
• minimum support rustc 1.56.1 (59eed8a2a 2021-11-01)

Bugs

• armv7-unknown-linux-musleabihf: can not compile
• x86_64-pc-windows-msvc: can not compile

Examples

Easy to use:

let a = vec![1, 2, 3, 4, 5, 6, 7, 8, 9];
clf::cache_line_flush_with_slice(&a);

or

let a = vec![1, 2, 3, 4, 5, 6, 7, 8, 9];
let begin_ptr = a.as_ptr();
let end_ptr = unsafe { begin_ptr.add(a.len()) };
clf::cache_line_flush_with_ptr(begin_ptr, end_ptr);

References

CPU cache

Changelogs

This crate's changelog here.

License

This project is licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.