Function generated_code

perro_source/io_stack/perro_io/build.rs:13–53

()

}

fn generated_code() -> String {
    let mut code = String::from("// generated by perro_io/build.rs\n\n");

    for size in SIZES {
        let mut rows = (0..size)
            .map(|index| (bench_key(index as u64), index as u32))
            .collect::<Vec<_>>();
        rows.sort_unstable_by_key(|(key, _)| *key);

        code.push_str(&format!(
            "static AOS_TABLE_{size}: [(u64, u32); {size}] = [\n"
        ));
        for (key, value) in &rows {
            code.push_str(&format!("    ({key:#018x}, {value}),\n"));
        }
        code.push_str("];\n\n");

        code.push_str(&format!("static SOA_HASHES_{size}: [u64; {size}] = [\n"));
        for (key, _) in &rows {
            code.push_str(&format!("    {key:#018x},\n"));
        }
        code.push_str("];\n\n");

        code.push_str(&format!("static SOA_VALUES_{size}: [u32; {size}] = [\n"));
        for (_, value) in &rows {
            code.push_str(&format!("    {value},\n"));
        }
        code.push_str("];\n\n");

        let probes = [
            bench_key(0),
            bench_key((size / 2) as u64),
            bench_key((size - 1) as u64),
            bench_key((size as u64).wrapping_add(17)),
        ];
        code.push_str(&format!("static PROBES_{size}: [u64; 4] = [\n"));
        for probe in probes {
            code.push_str(&format!("    {probe:#018x},\n"));
        }
        code.push_str("];\n\n");

        code.push_str(&format!(
            "#[inline(never)]\nfn match_lookup_{size}(key: u64) -> Option<u32> {{\n    match key {{\n"
        ));