diff options
Diffstat (limited to 'vendor/rand/benches/generators.rs')
-rw-r--r-- | vendor/rand/benches/generators.rs | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/vendor/rand/benches/generators.rs b/vendor/rand/benches/generators.rs deleted file mode 100644 index daee7c5..0000000 --- a/vendor/rand/benches/generators.rs +++ /dev/null @@ -1,133 +0,0 @@ -#![feature(test)] - -extern crate test; -extern crate rand; - -const RAND_BENCH_N: u64 = 1000; -const BYTES_LEN: usize = 1024; - -use std::mem::size_of; -use test::{black_box, Bencher}; - -use rand::{Rng, StdRng, OsRng, JitterRng}; -use rand::{XorShiftRng, IsaacRng, Isaac64Rng, ChaChaRng}; - -macro_rules! gen_bytes { - ($fnn:ident, $gen:ident) => { - #[bench] - fn $fnn(b: &mut Bencher) { - let mut rng: $gen = OsRng::new().unwrap().gen(); - let mut buf = [0u8; BYTES_LEN]; - b.iter(|| { - for _ in 0..RAND_BENCH_N { - rng.fill_bytes(&mut buf); - black_box(buf); - } - }); - b.bytes = BYTES_LEN as u64 * RAND_BENCH_N; - } - } -} - -macro_rules! gen_bytes_new { - ($fnn:ident, $gen:ident) => { - #[bench] - fn $fnn(b: &mut Bencher) { - let mut rng = $gen::new().unwrap(); - let mut buf = [0u8; BYTES_LEN]; - b.iter(|| { - for _ in 0..RAND_BENCH_N { - rng.fill_bytes(&mut buf); - black_box(buf); - } - }); - b.bytes = BYTES_LEN as u64 * RAND_BENCH_N; - } - } -} - -gen_bytes!(gen_bytes_xorshift, XorShiftRng); -gen_bytes!(gen_bytes_isaac, IsaacRng); -gen_bytes!(gen_bytes_isaac64, Isaac64Rng); -gen_bytes!(gen_bytes_chacha, ChaChaRng); -gen_bytes_new!(gen_bytes_std, StdRng); -gen_bytes_new!(gen_bytes_os, OsRng); - - -macro_rules! gen_uint { - ($fnn:ident, $ty:ty, $gen:ident) => { - #[bench] - fn $fnn(b: &mut Bencher) { - let mut rng: $gen = OsRng::new().unwrap().gen(); - b.iter(|| { - for _ in 0..RAND_BENCH_N { - black_box(rng.gen::<$ty>()); - } - }); - b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N; - } - } -} - -macro_rules! gen_uint_new { - ($fnn:ident, $ty:ty, $gen:ident) => { - #[bench] - fn $fnn(b: &mut Bencher) { - let mut rng = $gen::new().unwrap(); - b.iter(|| { - for _ in 0..RAND_BENCH_N { - black_box(rng.gen::<$ty>()); - } - }); - b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N; - } - } -} - -gen_uint!(gen_u32_xorshift, u32, XorShiftRng); -gen_uint!(gen_u32_isaac, u32, IsaacRng); -gen_uint!(gen_u32_isaac64, u32, Isaac64Rng); -gen_uint!(gen_u32_chacha, u32, ChaChaRng); -gen_uint_new!(gen_u32_std, u32, StdRng); -gen_uint_new!(gen_u32_os, u32, OsRng); - -gen_uint!(gen_u64_xorshift, u64, XorShiftRng); -gen_uint!(gen_u64_isaac, u64, IsaacRng); -gen_uint!(gen_u64_isaac64, u64, Isaac64Rng); -gen_uint!(gen_u64_chacha, u64, ChaChaRng); -gen_uint_new!(gen_u64_std, u64, StdRng); -gen_uint_new!(gen_u64_os, u64, OsRng); - -#[bench] -fn gen_u64_jitter(b: &mut Bencher) { - let mut rng = JitterRng::new().unwrap(); - b.iter(|| { - black_box(rng.gen::<u64>()); - }); - b.bytes = size_of::<u64>() as u64; -} - -macro_rules! init_gen { - ($fnn:ident, $gen:ident) => { - #[bench] - fn $fnn(b: &mut Bencher) { - let mut rng: XorShiftRng = OsRng::new().unwrap().gen(); - b.iter(|| { - let r2: $gen = rng.gen(); - black_box(r2); - }); - } - } -} - -init_gen!(init_xorshift, XorShiftRng); -init_gen!(init_isaac, IsaacRng); -init_gen!(init_isaac64, Isaac64Rng); -init_gen!(init_chacha, ChaChaRng); - -#[bench] -fn init_jitter(b: &mut Bencher) { - b.iter(|| { - black_box(JitterRng::new().unwrap()); - }); -} |