openethereum/benches/rlp.rs

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//! benchmarking for rlp
//! should be started with:
//! ```bash
//! multirust run nightly cargo bench
//! ```
#![feature(test)]
extern crate test;
extern crate ethcore_util;
use test::Bencher;
use std::str::FromStr;
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use ethcore_util::rlp::{RlpStream, Rlp, Decodable};
use ethcore_util::uint::U256;
#[bench]
fn bench_stream_u64_value(b: &mut Bencher) {
b.iter(|| {
// u64
let mut stream = RlpStream::new();
stream.append(&0x1023456789abcdefu64);
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let _ = stream.out();
});
}
#[bench]
fn bench_decode_u64_value(b: &mut Bencher) {
b.iter(|| {
// u64
let data = vec![0x88, 0x10, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
let rlp = Rlp::new(&data);
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let _ = u64::decode(&rlp);
});
}
#[bench]
fn bench_stream_u256_value(b: &mut Bencher) {
b.iter(|| {
// u256
let mut stream = RlpStream::new();
stream.append(&U256::from_str("8090a0b0c0d0e0f009102030405060770000000000000001000000000\
00012f0")
.unwrap());
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let _ = stream.out();
});
}
#[bench]
fn bench_decode_u256_value(b: &mut Bencher) {
b.iter(|| {
// u256
let data = vec![0xa0, 0x80, 0x90, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, 0x09, 0x10, 0x20,
0x30, 0x40, 0x50, 0x60, 0x77, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0xf0];
let rlp = Rlp::new(&data);
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let _ = U256::decode(&rlp);
});
}
#[bench]
fn bench_stream_nested_empty_lists(b: &mut Bencher) {
b.iter(|| {
// [ [], [[]], [ [], [[]] ] ]
let mut stream = RlpStream::new_list(3);
stream.append_list(0);
stream.append_list(1).append_list(0);
stream.append_list(2).append_list(0).append_list(1).append_list(0);
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let _ = stream.out();
});
}
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#[bench]
fn bench_decode_nested_empty_lists(b: &mut Bencher) {
b.iter(|| {
// [ [], [[]], [ [], [[]] ] ]
let data = vec![0xc7, 0xc0, 0xc1, 0xc0, 0xc3, 0xc0, 0xc1, 0xc0];
let rlp = Rlp::new(&data);
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let _v0: Vec<u16> = Decodable::decode(&rlp.at(0));
let _v1: Vec<Vec<u16>> = Decodable::decode(&rlp.at(1));
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let nested_rlp = rlp.at(2);
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let _v2a: Vec<u16> = Decodable::decode(&nested_rlp.at(0));
let _v2b: Vec<Vec<u16>> = Decodable::decode(&nested_rlp.at(1));
});
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}
#[bench]
fn bench_stream_1000_empty_lists(b: &mut Bencher) {
b.iter(|| {
let mut stream = RlpStream::new_list(1000);
for _ in 0..1000 {
stream.append_list(0);
}
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//let _ = stream.out();
});
}