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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
use std::fs;
use criterion::{black_box, criterion_group, criterion_main, Criterion};
use litemap::LiteMap;
const DATA: [(&str, &str); 16] = [
("ar", "Arabic"),
("bn", "Bangla"),
("ccp", "Chakma"),
("chr", "Cherokee"),
("el", "Greek"),
("en", "English"),
("eo", "Esperanto"),
("es", "Spanish"),
("fr", "French"),
("iu", "Inuktitut"),
("ja", "Japanese"),
("ru", "Russian"),
("sr", "Serbian"),
("th", "Thai"),
("tr", "Turkish"),
("zh", "Chinese"),
];
const POSTCARD: [u8; 176] = [
16, 2, 97, 114, 6, 65, 114, 97, 98, 105, 99, 2, 98, 110, 6, 66, 97, 110, 103, 108, 97, 3, 99,
99, 112, 6, 67, 104, 97, 107, 109, 97, 3, 99, 104, 114, 8, 67, 104, 101, 114, 111, 107, 101,
101, 2, 101, 108, 5, 71, 114, 101, 101, 107, 2, 101, 110, 7, 69, 110, 103, 108, 105, 115, 104,
2, 101, 111, 9, 69, 115, 112, 101, 114, 97, 110, 116, 111, 2, 101, 115, 7, 83, 112, 97, 110,
105, 115, 104, 2, 102, 114, 6, 70, 114, 101, 110, 99, 104, 2, 105, 117, 9, 73, 110, 117, 107,
116, 105, 116, 117, 116, 2, 106, 97, 8, 74, 97, 112, 97, 110, 101, 115, 101, 2, 114, 117, 7,
82, 117, 115, 115, 105, 97, 110, 2, 115, 114, 7, 83, 101, 114, 98, 105, 97, 110, 2, 116, 104,
4, 84, 104, 97, 105, 2, 116, 114, 7, 84, 117, 114, 107, 105, 115, 104, 2, 122, 104, 7, 67, 104,
105, 110, 101, 115, 101,
];
/// Run this function to print new data to the console. Requires the optional `serde` feature.
#[allow(dead_code)]
fn generate() {
let map = build_litemap(false);
let buf = postcard::to_stdvec(&map).unwrap();
println!("{:?}", buf);
}
#[cfg(feature = "generate")]
fn generate_test_data() {
let map = build_litemap(true);
let bytes = postcard::to_stdvec(&map).unwrap();
fs::write("large_litemap.postcard", &bytes).unwrap();
}
fn overview_bench(c: &mut Criterion) {
// Uncomment the following line to re-generate the binary data.
// generate();
bench_deserialize(c);
bench_deserialize_large(c);
bench_lookup(c);
bench_lookup_large(c);
#[cfg(feature = "generate")]
generate_test_data();
}
fn build_litemap(large: bool) -> LiteMap<String, String> {
let mut map: LiteMap<String, String> = LiteMap::new();
for (key, value) in DATA.iter() {
if large {
for n in 0..8192 {
map.insert(format!("{}{}", key, n), value.to_string());
}
} else {
map.insert(key.to_string(), value.to_string());
}
}
map
}
fn bench_deserialize(c: &mut Criterion) {
c.bench_function("litemap/deserialize/small", |b| {
b.iter(|| {
let map: LiteMap<String, String> = postcard::from_bytes(black_box(&POSTCARD)).unwrap();
assert_eq!(map.get("iu"), Some(&"Inuktitut".to_string()));
})
});
}
fn bench_deserialize_large(c: &mut Criterion) {
let buf = read_large_litemap_postcard_bytes();
c.bench_function("litemap/deseralize/large", |b| {
b.iter(|| {
let map: LiteMap<String, String> = postcard::from_bytes(black_box(&buf)).unwrap();
assert_eq!(map.get("iu3333"), Some(&"Inuktitut".to_string()));
});
});
}
fn bench_lookup(c: &mut Criterion) {
let map: LiteMap<String, String> = postcard::from_bytes(&POSTCARD).unwrap();
c.bench_function("litemap/lookup/small", |b| {
b.iter(|| {
assert_eq!(map.get(black_box("iu")), Some(&"Inuktitut".to_string()));
assert_eq!(map.get(black_box("zz")), None);
});
});
}
fn bench_lookup_large(c: &mut Criterion) {
let buf = read_large_litemap_postcard_bytes();
let map: LiteMap<String, String> = postcard::from_bytes(&buf).unwrap();
c.bench_function("litemap/lookup/large", |b| {
b.iter(|| {
assert_eq!(map.get(black_box("iu3333")), Some(&"Inuktitut".to_string()));
assert_eq!(map.get(black_box("zz")), None);
});
});
}
fn read_large_litemap_postcard_bytes() -> Vec<u8> {
let path = concat!(
env!("CARGO_MANIFEST_DIR"),
"/benches/testdata/large_litemap.postcard"
);
fs::read(path).unwrap()
}
criterion_group!(benches, overview_bench);
criterion_main!(benches);
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