mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
2.4 KiB
98 lines
2.4 KiB
// Copyright 2020 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package snap
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"fmt"
|
|
"testing"
|
|
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"golang.org/x/crypto/sha3"
|
|
)
|
|
|
|
func TestHashing(t *testing.T) {
|
|
var bytecodes = make([][]byte, 10)
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
buf := make([]byte, 100)
|
|
rand.Read(buf)
|
|
bytecodes[i] = buf
|
|
}
|
|
var want, got string
|
|
var old = func() {
|
|
hasher := sha3.NewLegacyKeccak256()
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
hasher.Reset()
|
|
hasher.Write(bytecodes[i])
|
|
hash := hasher.Sum(nil)
|
|
got = fmt.Sprintf("%v\n%v", got, hash)
|
|
}
|
|
}
|
|
var new = func() {
|
|
hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
|
|
var hash = make([]byte, 32)
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
hasher.Reset()
|
|
hasher.Write(bytecodes[i])
|
|
hasher.Read(hash)
|
|
want = fmt.Sprintf("%v\n%v", want, hash)
|
|
}
|
|
}
|
|
old()
|
|
new()
|
|
if want != got {
|
|
t.Errorf("want\n%v\ngot\n%v\n", want, got)
|
|
}
|
|
}
|
|
|
|
func BenchmarkHashing(b *testing.B) {
|
|
var bytecodes = make([][]byte, 10000)
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
buf := make([]byte, 100)
|
|
rand.Read(buf)
|
|
bytecodes[i] = buf
|
|
}
|
|
var old = func() {
|
|
hasher := sha3.NewLegacyKeccak256()
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
hasher.Reset()
|
|
hasher.Write(bytecodes[i])
|
|
hasher.Sum(nil)
|
|
}
|
|
}
|
|
var new = func() {
|
|
hasher := sha3.NewLegacyKeccak256().(crypto.KeccakState)
|
|
var hash = make([]byte, 32)
|
|
for i := 0; i < len(bytecodes); i++ {
|
|
hasher.Reset()
|
|
hasher.Write(bytecodes[i])
|
|
hasher.Read(hash)
|
|
}
|
|
}
|
|
b.Run("old", func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
for i := 0; i < b.N; i++ {
|
|
old()
|
|
}
|
|
})
|
|
b.Run("new", func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
for i := 0; i < b.N; i++ {
|
|
new()
|
|
}
|
|
})
|
|
}
|
|
|