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Updated simple-rw example to have more control over certain variables.

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This commit is contained in:
Filipe Rodrigues 2023-07-06 08:26:03 +01:00
parent 2d8d342522
commit 542591ab81
1 changed files with 10 additions and 8 deletions
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18
examples/simple-rw/src/main.rs
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@ -3,17 +3,21 @@
// Imports
use std::{hint, ptr};
const PAGE_SIZE: usize = 4096;
// TODO: Make these runtime constants?
const PASSES: usize = 2;
const WRITES_PER_PASS: usize = 100;
const READS_PER_PASS: usize = 150;
const TOTAL_BYTES: usize = 16384 * PAGE_SIZE;
const PASSES: usize = 8;
const PASS_STEP: usize = PAGE_SIZE;
const WRITES_PER_PASS: usize = 128;
const READS_PER_PASS: usize = 128;
fn main() {
let mut v = vec![0u8; 128 * PAGE_SIZE];
let mut v = vec![0u8; TOTAL_BYTES];
// Note: We `step_by` the page size because we only care about initializing a single page.
for _ in 0..PASSES {
for x in v.iter_mut().step_by(PAGE_SIZE) {
for x in v.iter_mut().step_by(PASS_STEP) {
for _ in 0..WRITES_PER_PASS {
// SAFETY: Target is valid for writes.
// Note: We simply want to avoid the write being elided
@ -23,7 +27,7 @@ fn main() {
}
}
for x in v.iter().step_by(PAGE_SIZE) {
for x in v.iter_mut().step_by(PASS_STEP) {
for _ in 0..READS_PER_PASS {
// SAFETY: Target is valid for writes.
// Note: We simply want to avoid the write being elided
@ -34,5 +38,3 @@ fn main() {
}
}
}
const PAGE_SIZE: usize = 4096;