pyo3/benches/bench_dict.rs

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use criterion::{criterion_group, criterion_main, Bencher, Criterion};
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use pyo3::types::IntoPyDict;
use pyo3::{prelude::*, types::PyMapping};
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use std::collections::{BTreeMap, HashMap};
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fn iter_dict(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 100_000;
let dict = (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py);
let mut sum = 0;
b.iter(|| {
for (k, _v) in dict.iter() {
let i: u64 = k.extract().unwrap();
sum += i;
}
});
})
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}
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fn dict_new(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 50_000;
b.iter(|| (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py));
});
}
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fn dict_get_item(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 50_000;
let dict = (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py);
let mut sum = 0;
b.iter(|| {
for i in 0..LEN {
sum += dict.get_item(i).unwrap().extract::<usize>().unwrap();
}
});
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});
}
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fn extract_hashmap(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 100_000;
let dict = (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py);
b.iter(|| HashMap::<u64, u64>::extract(dict));
});
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}
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fn extract_btreemap(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 100_000;
let dict = (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py);
b.iter(|| BTreeMap::<u64, u64>::extract(dict));
});
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}
#[cfg(feature = "hashbrown")]
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fn extract_hashbrown_map(b: &mut Bencher<'_>) {
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Python::with_gil(|py| {
const LEN: usize = 100_000;
let dict = (0..LEN as u64).map(|i| (i, i * 2)).into_py_dict(py);
b.iter(|| hashbrown::HashMap::<u64, u64>::extract(dict));
});
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}
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fn mapping_from_dict(b: &mut Bencher<'_>) {
Python::with_gil(|py| {
const LEN: usize = 100_000;
let dict = (0..LEN as u64)
.map(|i| (i, i * 2))
.into_py_dict(py)
.to_object(py);
b.iter(|| {
let _: &PyMapping = dict.extract(py).unwrap();
});
});
}
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fn criterion_benchmark(c: &mut Criterion) {
c.bench_function("iter_dict", iter_dict);
c.bench_function("dict_new", dict_new);
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c.bench_function("dict_get_item", dict_get_item);
c.bench_function("extract_hashmap", extract_hashmap);
c.bench_function("extract_btreemap", extract_btreemap);
#[cfg(feature = "hashbrown")]
c.bench_function("extract_hashbrown_map", extract_hashbrown_map);
c.bench_function("mapping_from_dict", mapping_from_dict);
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}
criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);