/
generators.rs
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/
generators.rs
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// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(test)]
#![allow(non_snake_case)]
extern crate test;
extern crate rand;
extern crate rand_isaac;
extern crate rand_chacha;
extern crate rand_hc;
extern crate rand_pcg;
extern crate rand_xorshift;
extern crate rand_xoshiro;
const RAND_BENCH_N: u64 = 1000;
const BYTES_LEN: usize = 1024;
use std::mem::size_of;
use test::{black_box, Bencher};
use rand::prelude::*;
use rand::rngs::adapter::ReseedingRng;
use rand::rngs::OsRng;
use rand_isaac::{IsaacRng, Isaac64Rng};
use rand_chacha::{ChaCha20Core, ChaCha8Rng, ChaCha12Rng, ChaCha20Rng};
use rand_hc::{Hc128Rng};
use rand_pcg::{Pcg32, Pcg64, Pcg64Mcg};
use rand_xorshift::XorShiftRng;
use rand_xoshiro::{Xoshiro256StarStar, Xoshiro256Plus, Xoshiro128StarStar,
Xoshiro128Plus, Xoroshiro128StarStar, Xoroshiro128Plus, SplitMix64,
Xoroshiro64StarStar, Xoroshiro64Star};
macro_rules! gen_bytes {
($fnn:ident, $gen:expr) => {
#[bench]
fn $fnn(b: &mut Bencher) {
let mut rng = $gen;
let mut buf = [0u8; BYTES_LEN];
b.iter(|| {
for _ in 0..RAND_BENCH_N {
rng.fill_bytes(&mut buf);
black_box(buf);
}
});
b.bytes = BYTES_LEN as u64 * RAND_BENCH_N;
}
}
}
gen_bytes!(gen_bytes_xorshift, XorShiftRng::from_entropy());
gen_bytes!(gen_bytes_xoshiro256starstar, Xoshiro256StarStar::from_entropy());
gen_bytes!(gen_bytes_xoshiro256plus, Xoshiro256Plus::from_entropy());
gen_bytes!(gen_bytes_xoshiro128starstar, Xoshiro128StarStar::from_entropy());
gen_bytes!(gen_bytes_xoshiro128plus, Xoshiro128Plus::from_entropy());
gen_bytes!(gen_bytes_xoroshiro128starstar, Xoroshiro128StarStar::from_entropy());
gen_bytes!(gen_bytes_xoroshiro128plus, Xoroshiro128Plus::from_entropy());
gen_bytes!(gen_bytes_xoroshiro64starstar, Xoroshiro64StarStar::from_entropy());
gen_bytes!(gen_bytes_xoroshiro64star, Xoroshiro64Star::from_entropy());
gen_bytes!(gen_bytes_splitmix64, SplitMix64::from_entropy());
gen_bytes!(gen_bytes_pcg32, Pcg32::from_entropy());
gen_bytes!(gen_bytes_pcg64, Pcg64::from_entropy());
gen_bytes!(gen_bytes_pcg64mcg, Pcg64Mcg::from_entropy());
gen_bytes!(gen_bytes_chacha8, ChaCha8Rng::from_entropy());
gen_bytes!(gen_bytes_chacha12, ChaCha12Rng::from_entropy());
gen_bytes!(gen_bytes_chacha20, ChaCha20Rng::from_entropy());
gen_bytes!(gen_bytes_hc128, Hc128Rng::from_entropy());
gen_bytes!(gen_bytes_isaac, IsaacRng::from_entropy());
gen_bytes!(gen_bytes_isaac64, Isaac64Rng::from_entropy());
gen_bytes!(gen_bytes_std, StdRng::from_entropy());
#[cfg(feature="small_rng")]
gen_bytes!(gen_bytes_small, SmallRng::from_entropy());
gen_bytes!(gen_bytes_os, OsRng);
macro_rules! gen_uint {
($fnn:ident, $ty:ty, $gen:expr) => {
#[bench]
fn $fnn(b: &mut Bencher) {
let mut rng = $gen;
b.iter(|| {
let mut accum: $ty = 0;
for _ in 0..RAND_BENCH_N {
accum = accum.wrapping_add(rng.gen::<$ty>());
}
accum
});
b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
}
}
}
gen_uint!(gen_u32_xorshift, u32, XorShiftRng::from_entropy());
gen_uint!(gen_u32_xoshiro256starstar, u32, Xoshiro256StarStar::from_entropy());
gen_uint!(gen_u32_xoshiro256plus, u32, Xoshiro256Plus::from_entropy());
gen_uint!(gen_u32_xoshiro128starstar, u32, Xoshiro128StarStar::from_entropy());
gen_uint!(gen_u32_xoshiro128plus, u32, Xoshiro128Plus::from_entropy());
gen_uint!(gen_u32_xoroshiro128starstar, u32, Xoroshiro128StarStar::from_entropy());
gen_uint!(gen_u32_xoroshiro128plus, u32, Xoroshiro128Plus::from_entropy());
gen_uint!(gen_u32_xoroshiro64starstar, u32, Xoroshiro64StarStar::from_entropy());
gen_uint!(gen_u32_xoroshiro64star, u32, Xoroshiro64Star::from_entropy());
gen_uint!(gen_u32_splitmix64, u32, SplitMix64::from_entropy());
gen_uint!(gen_u32_pcg32, u32, Pcg32::from_entropy());
gen_uint!(gen_u32_pcg64, u32, Pcg64::from_entropy());
gen_uint!(gen_u32_pcg64mcg, u32, Pcg64Mcg::from_entropy());
gen_uint!(gen_u32_chacha8, u32, ChaCha8Rng::from_entropy());
gen_uint!(gen_u32_chacha12, u32, ChaCha12Rng::from_entropy());
gen_uint!(gen_u32_chacha20, u32, ChaCha20Rng::from_entropy());
gen_uint!(gen_u32_hc128, u32, Hc128Rng::from_entropy());
gen_uint!(gen_u32_isaac, u32, IsaacRng::from_entropy());
gen_uint!(gen_u32_isaac64, u32, Isaac64Rng::from_entropy());
gen_uint!(gen_u32_std, u32, StdRng::from_entropy());
#[cfg(feature="small_rng")]
gen_uint!(gen_u32_small, u32, SmallRng::from_entropy());
gen_uint!(gen_u32_os, u32, OsRng);
gen_uint!(gen_u64_xorshift, u64, XorShiftRng::from_entropy());
gen_uint!(gen_u64_xoshiro256starstar, u64, Xoshiro256StarStar::from_entropy());
gen_uint!(gen_u64_xoshiro256plus, u64, Xoshiro256Plus::from_entropy());
gen_uint!(gen_u64_xoshiro128starstar, u64, Xoshiro128StarStar::from_entropy());
gen_uint!(gen_u64_xoshiro128plus, u64, Xoshiro128Plus::from_entropy());
gen_uint!(gen_u64_xoroshiro128starstar, u64, Xoroshiro128StarStar::from_entropy());
gen_uint!(gen_u64_xoroshiro128plus, u64, Xoroshiro128Plus::from_entropy());
gen_uint!(gen_u64_xoroshiro64starstar, u64, Xoroshiro64StarStar::from_entropy());
gen_uint!(gen_u64_xoroshiro64star, u64, Xoroshiro64Star::from_entropy());
gen_uint!(gen_u64_splitmix64, u64, SplitMix64::from_entropy());
gen_uint!(gen_u64_pcg32, u64, Pcg32::from_entropy());
gen_uint!(gen_u64_pcg64, u64, Pcg64::from_entropy());
gen_uint!(gen_u64_pcg64mcg, u64, Pcg64Mcg::from_entropy());
gen_uint!(gen_u64_chacha8, u64, ChaCha8Rng::from_entropy());
gen_uint!(gen_u64_chacha12, u64, ChaCha12Rng::from_entropy());
gen_uint!(gen_u64_chacha20, u64, ChaCha20Rng::from_entropy());
gen_uint!(gen_u64_hc128, u64, Hc128Rng::from_entropy());
gen_uint!(gen_u64_isaac, u64, IsaacRng::from_entropy());
gen_uint!(gen_u64_isaac64, u64, Isaac64Rng::from_entropy());
gen_uint!(gen_u64_std, u64, StdRng::from_entropy());
#[cfg(feature="small_rng")]
gen_uint!(gen_u64_small, u64, SmallRng::from_entropy());
gen_uint!(gen_u64_os, u64, OsRng);
macro_rules! init_gen {
($fnn:ident, $gen:ident) => {
#[bench]
fn $fnn(b: &mut Bencher) {
let mut rng = XorShiftRng::from_entropy();
b.iter(|| {
let r2 = $gen::from_rng(&mut rng).unwrap();
r2
});
}
}
}
init_gen!(init_xorshift, XorShiftRng);
init_gen!(init_xoshiro256starstar, Xoshiro256StarStar);
init_gen!(init_xoshiro256plus, Xoshiro256Plus);
init_gen!(init_xoshiro128starstar, Xoshiro128StarStar);
init_gen!(init_xoshiro128plus, Xoshiro128Plus);
init_gen!(init_xoroshiro128starstar, Xoroshiro128StarStar);
init_gen!(init_xoroshiro128plus, Xoroshiro128Plus);
init_gen!(init_xoroshiro64starstar, Xoroshiro64StarStar);
init_gen!(init_xoroshiro64star, Xoroshiro64Star);
init_gen!(init_splitmix64, SplitMix64);
init_gen!(init_pcg32, Pcg32);
init_gen!(init_pcg64, Pcg64);
init_gen!(init_pcg64mcg, Pcg64Mcg);
init_gen!(init_hc128, Hc128Rng);
init_gen!(init_isaac, IsaacRng);
init_gen!(init_isaac64, Isaac64Rng);
init_gen!(init_chacha, ChaCha20Rng);
const RESEEDING_BYTES_LEN: usize = 1024 * 1024;
const RESEEDING_BENCH_N: u64 = 16;
macro_rules! reseeding_bytes {
($fnn:ident, $thresh:expr) => {
#[bench]
fn $fnn(b: &mut Bencher) {
let mut rng = ReseedingRng::new(ChaCha20Core::from_entropy(),
$thresh * 1024,
OsRng);
let mut buf = [0u8; RESEEDING_BYTES_LEN];
b.iter(|| {
for _ in 0..RESEEDING_BENCH_N {
rng.fill_bytes(&mut buf);
black_box(&buf);
}
});
b.bytes = RESEEDING_BYTES_LEN as u64 * RESEEDING_BENCH_N;
}
}
}
reseeding_bytes!(reseeding_chacha20_4k, 4);
reseeding_bytes!(reseeding_chacha20_16k, 16);
reseeding_bytes!(reseeding_chacha20_32k, 32);
reseeding_bytes!(reseeding_chacha20_64k, 64);
reseeding_bytes!(reseeding_chacha20_256k, 256);
reseeding_bytes!(reseeding_chacha20_1M, 1024);
macro_rules! threadrng_uint {
($fnn:ident, $ty:ty) => {
#[bench]
fn $fnn(b: &mut Bencher) {
let mut rng = thread_rng();
b.iter(|| {
let mut accum: $ty = 0;
for _ in 0..RAND_BENCH_N {
accum = accum.wrapping_add(rng.gen::<$ty>());
}
accum
});
b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
}
}
}
threadrng_uint!(thread_rng_u32, u32);
threadrng_uint!(thread_rng_u64, u64);