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15940
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use criterion::{black_box, criterion_group, criterion_main, Criterion};
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use hwphysics::{common::GearId, data::GearDataManager};
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#[derive(Clone, Copy, Default)]
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struct P {
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position: u64,
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}
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#[derive(Clone, Copy, Default)]
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struct V {
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velocity: u64,
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}
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#[derive(Clone, Copy, Default)]
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struct Pv {
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position: u64,
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velocity: u64,
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}
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const SIZE: usize = 4 * 1024;
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pub fn array_run(c: &mut Criterion) {
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let mut items = [Pv::default(); SIZE];
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c.bench_function("array run", |b| {
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b.iter(|| {
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for item in &mut items {
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item.velocity += black_box(item.position);
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}
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})
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});
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}
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pub fn component_run(c: &mut Criterion) {
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let mut manager = GearDataManager::new();
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manager.register::<P>();
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manager.register::<V>();
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for i in 1..=SIZE {
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let gear_id = GearId::new(i as u16).unwrap();
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manager.add(gear_id, &P::default());
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manager.add(gear_id, &V::default());
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}
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c.bench_function("component run", |b| {
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b.iter(|| {
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manager
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.iter()
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.run(|(p, v): (&mut P, &mut V)| v.velocity += black_box(p.position));
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})
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});
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}
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pub fn component_multirun(c: &mut Criterion) {
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for n in (16..=64).step_by(16) {
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let mut manager = GearDataManager::new();
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manager.register::<P>();
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manager.register::<V>();
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for i in 1..=(SIZE / n) {
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let gear_id = GearId::new(i as u16).unwrap();
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manager.add(gear_id, &P::default());
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manager.add(gear_id, &V::default());
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}
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c.bench_function(&format!("component run {}", n), |b| {
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b.iter(|| {
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for i in 0..n {
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manager
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.iter()
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.run(|(p, v): (&mut P, &mut V)| v.velocity += black_box(p.position));
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}
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})
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});
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}
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}
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pub fn component_add_remove(c: &mut Criterion) {
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let mut manager = GearDataManager::new();
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let mut gears1 = vec![];
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let mut gears2 = vec![];
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manager.register::<P>();
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manager.register::<V>();
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for i in 1..=SIZE {
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let gear_id = GearId::new(i as u16).unwrap();
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manager.add(gear_id, &P::default());
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if i % 2 == 0 {
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manager.add(gear_id, &V::default());
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gears1.push(gear_id);
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} else {
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gears2.push(gear_id);
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}
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}
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c.bench_function("component add/remove", |b| {
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b.iter(|| {
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for id in &gears2 {
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manager.add(*id, &V::default());
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}
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for id in &gears1 {
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manager.remove::<V>(*id);
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}
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std::mem::swap(&mut gears1, &mut gears2);
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})
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});
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}
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criterion_group!(benches, array_run, component_run, component_multirun, component_add_remove);
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criterion_main!(benches);
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