Vendor things

third-party/vendor/phf_generator/benches/benches.rs

@@ -0,0 +1,58 @@
+use criterion::measurement::Measurement;
+use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
+
+use rand::distributions::Standard;
+use rand::rngs::SmallRng;
+use rand::{Rng, SeedableRng};
+
+use phf_generator::generate_hash;
+
+fn gen_vec(len: usize) -> Vec<u64> {
+    SmallRng::seed_from_u64(0xAAAAAAAAAAAAAAAA)
+        .sample_iter(Standard)
+        .take(len)
+        .collect()
+}
+
+fn bench_hash<M: Measurement>(b: &mut Bencher<M>, len: &usize) {
+    let vec = gen_vec(*len);
+    b.iter(|| generate_hash(&vec))
+}
+
+fn gen_hash_small(c: &mut Criterion) {
+    let sizes = vec![0, 1, 2, 5, 10, 25, 50, 75];
+    for size in &sizes {
+        c.bench_with_input(BenchmarkId::new("gen_hash_small", *size), size, bench_hash);
+    }
+}
+
+fn gen_hash_med(c: &mut Criterion) {
+    let sizes = vec![100, 250, 500, 1000, 2500, 5000, 7500];
+    for size in &sizes {
+        c.bench_with_input(BenchmarkId::new("gen_hash_medium", *size), size, bench_hash);
+    }
+}
+
+fn gen_hash_large(c: &mut Criterion) {
+    let sizes = vec![10_000, 25_000, 50_000, 75_000];
+    for size in &sizes {
+        c.bench_with_input(BenchmarkId::new("gen_hash_large", *size), size, bench_hash);
+    }
+}
+
+fn gen_hash_xlarge(c: &mut Criterion) {
+    let sizes = vec![100_000, 250_000, 500_000, 750_000, 1_000_000];
+    for size in &sizes {
+        c.bench_with_input(BenchmarkId::new("gen_hash_xlarge", *size), size, bench_hash);
+    }
+}
+
+criterion_group!(
+    benches,
+    gen_hash_small,
+    gen_hash_med,
+    gen_hash_large,
+    gen_hash_xlarge
+);
+
+criterion_main!(benches);