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Remove unsafes

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Kerollmops 2025-02-12 10:46:36 +01:00
parent 246ad3b06e
commit 803a699b15
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1 changed files with 5 additions and 11 deletions
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12
crates/meilitool/src/main.rs
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@ -1,7 +1,6 @@
use std::fs::{read_dir, read_to_string, remove_file, File}; use std::fs::{read_dir, read_to_string, remove_file, File};
use std::io::{BufWriter, Write as _}; use std::io::{BufWriter, Write as _};
use std::path::PathBuf; use std::path::PathBuf;
use std::ptr;
use std::time::Instant; use std::time::Instant;
use anyhow::{bail, Context}; use anyhow::{bail, Context};
@ -651,17 +650,12 @@ fn hair_dryer(
.enumerate() .enumerate()
{ {
let (key, value) = result?; let (key, value) = result?;
count += key.len() + value.len();
unsafe {
// All of this just to avoid compiler optimizations 🤞 // All of this just to avoid compiler optimizations 🤞
// We must read all the bytes to make the pages hot in cache. // We must read all the bytes to make the pages hot in cache.
// <https://doc.rust-lang.org/std/ptr/fn.read_volatile.html> // <https://doc.rust-lang.org/std/hint/fn.black_box.html>
ptr::read_volatile(&key[0]); count += std::hint::black_box(key.iter().fold(0, |acc, _| acc + 1));
ptr::read_volatile(&key[key.len() - 1]); count += std::hint::black_box(value.iter().fold(0, |acc, _| acc + 1));
ptr::read_volatile(&value[0]);
ptr::read_volatile(&value[value.len() - 1]);
}
if i % 10_000 == 0 { if i % 10_000 == 0 {
let perc = (i as f64) / (total as f64) * 100.0; let perc = (i as f64) / (total as f64) * 100.0;