mirror of https://github.com/status-im/op-geth.git
482 lines
12 KiB
Go
482 lines
12 KiB
Go
// Copyright 2017 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 bmt
|
|
|
|
import (
|
|
"bytes"
|
|
crand "crypto/rand"
|
|
"fmt"
|
|
"hash"
|
|
"io"
|
|
"math/rand"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/crypto/sha3"
|
|
)
|
|
|
|
const (
|
|
maxproccnt = 8
|
|
)
|
|
|
|
// TestRefHasher tests that the RefHasher computes the expected BMT hash for
|
|
// all data lengths between 0 and 256 bytes
|
|
func TestRefHasher(t *testing.T) {
|
|
hashFunc := sha3.NewKeccak256
|
|
|
|
sha3 := func(data ...[]byte) []byte {
|
|
h := hashFunc()
|
|
for _, v := range data {
|
|
h.Write(v)
|
|
}
|
|
return h.Sum(nil)
|
|
}
|
|
|
|
// the test struct is used to specify the expected BMT hash for data
|
|
// lengths between "from" and "to"
|
|
type test struct {
|
|
from int64
|
|
to int64
|
|
expected func([]byte) []byte
|
|
}
|
|
|
|
var tests []*test
|
|
|
|
// all lengths in [0,64] should be:
|
|
//
|
|
// sha3(data)
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 0,
|
|
to: 64,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(data)
|
|
},
|
|
})
|
|
|
|
// all lengths in [65,96] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// data[64:]
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 65,
|
|
to: 96,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(data[:64]), data[64:])
|
|
},
|
|
})
|
|
|
|
// all lengths in [97,128] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// sha3(data[64:])
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 97,
|
|
to: 128,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(data[:64]), sha3(data[64:]))
|
|
},
|
|
})
|
|
|
|
// all lengths in [129,160] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// sha3(data[64:128])
|
|
// )
|
|
// data[128:]
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 129,
|
|
to: 160,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(sha3(data[:64]), sha3(data[64:128])), data[128:])
|
|
},
|
|
})
|
|
|
|
// all lengths in [161,192] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// sha3(data[64:128])
|
|
// )
|
|
// sha3(data[128:])
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 161,
|
|
to: 192,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(sha3(data[:64]), sha3(data[64:128])), sha3(data[128:]))
|
|
},
|
|
})
|
|
|
|
// all lengths in [193,224] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// sha3(data[64:128])
|
|
// )
|
|
// sha3(
|
|
// sha3(data[128:192])
|
|
// data[192:]
|
|
// )
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 193,
|
|
to: 224,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(sha3(data[:64]), sha3(data[64:128])), sha3(sha3(data[128:192]), data[192:]))
|
|
},
|
|
})
|
|
|
|
// all lengths in [225,256] should be:
|
|
//
|
|
// sha3(
|
|
// sha3(
|
|
// sha3(data[:64])
|
|
// sha3(data[64:128])
|
|
// )
|
|
// sha3(
|
|
// sha3(data[128:192])
|
|
// sha3(data[192:])
|
|
// )
|
|
// )
|
|
//
|
|
tests = append(tests, &test{
|
|
from: 225,
|
|
to: 256,
|
|
expected: func(data []byte) []byte {
|
|
return sha3(sha3(sha3(data[:64]), sha3(data[64:128])), sha3(sha3(data[128:192]), sha3(data[192:])))
|
|
},
|
|
})
|
|
|
|
// run the tests
|
|
for _, x := range tests {
|
|
for length := x.from; length <= x.to; length++ {
|
|
t.Run(fmt.Sprintf("%d_bytes", length), func(t *testing.T) {
|
|
data := make([]byte, length)
|
|
if _, err := io.ReadFull(crand.Reader, data); err != nil && err != io.EOF {
|
|
t.Fatal(err)
|
|
}
|
|
expected := x.expected(data)
|
|
actual := NewRefHasher(hashFunc, 128).Hash(data)
|
|
if !bytes.Equal(actual, expected) {
|
|
t.Fatalf("expected %x, got %x", expected, actual)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func testDataReader(l int) (r io.Reader) {
|
|
return io.LimitReader(crand.Reader, int64(l))
|
|
}
|
|
|
|
func TestHasherCorrectness(t *testing.T) {
|
|
err := testHasher(testBaseHasher)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func testHasher(f func(BaseHasher, []byte, int, int) error) error {
|
|
tdata := testDataReader(4128)
|
|
data := make([]byte, 4128)
|
|
tdata.Read(data)
|
|
hasher := sha3.NewKeccak256
|
|
size := hasher().Size()
|
|
counts := []int{1, 2, 3, 4, 5, 8, 16, 32, 64, 128}
|
|
|
|
var err error
|
|
for _, count := range counts {
|
|
max := count * size
|
|
incr := 1
|
|
for n := 0; n <= max+incr; n += incr {
|
|
err = f(hasher, data, n, count)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func TestHasherReuseWithoutRelease(t *testing.T) {
|
|
testHasherReuse(1, t)
|
|
}
|
|
|
|
func TestHasherReuseWithRelease(t *testing.T) {
|
|
testHasherReuse(maxproccnt, t)
|
|
}
|
|
|
|
func testHasherReuse(i int, t *testing.T) {
|
|
hasher := sha3.NewKeccak256
|
|
pool := NewTreePool(hasher, 128, i)
|
|
defer pool.Drain(0)
|
|
bmt := New(pool)
|
|
|
|
for i := 0; i < 500; i++ {
|
|
n := rand.Intn(4096)
|
|
tdata := testDataReader(n)
|
|
data := make([]byte, n)
|
|
tdata.Read(data)
|
|
|
|
err := testHasherCorrectness(bmt, hasher, data, n, 128)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestHasherConcurrency(t *testing.T) {
|
|
hasher := sha3.NewKeccak256
|
|
pool := NewTreePool(hasher, 128, maxproccnt)
|
|
defer pool.Drain(0)
|
|
wg := sync.WaitGroup{}
|
|
cycles := 100
|
|
wg.Add(maxproccnt * cycles)
|
|
errc := make(chan error)
|
|
|
|
for p := 0; p < maxproccnt; p++ {
|
|
for i := 0; i < cycles; i++ {
|
|
go func() {
|
|
bmt := New(pool)
|
|
n := rand.Intn(4096)
|
|
tdata := testDataReader(n)
|
|
data := make([]byte, n)
|
|
tdata.Read(data)
|
|
err := testHasherCorrectness(bmt, hasher, data, n, 128)
|
|
wg.Done()
|
|
if err != nil {
|
|
errc <- err
|
|
}
|
|
}()
|
|
}
|
|
}
|
|
go func() {
|
|
wg.Wait()
|
|
close(errc)
|
|
}()
|
|
var err error
|
|
select {
|
|
case <-time.NewTimer(5 * time.Second).C:
|
|
err = fmt.Errorf("timed out")
|
|
case err = <-errc:
|
|
}
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func testBaseHasher(hasher BaseHasher, d []byte, n, count int) error {
|
|
pool := NewTreePool(hasher, count, 1)
|
|
defer pool.Drain(0)
|
|
bmt := New(pool)
|
|
return testHasherCorrectness(bmt, hasher, d, n, count)
|
|
}
|
|
|
|
func testHasherCorrectness(bmt hash.Hash, hasher BaseHasher, d []byte, n, count int) (err error) {
|
|
data := d[:n]
|
|
rbmt := NewRefHasher(hasher, count)
|
|
exp := rbmt.Hash(data)
|
|
timeout := time.NewTimer(time.Second)
|
|
c := make(chan error)
|
|
|
|
go func() {
|
|
bmt.Reset()
|
|
bmt.Write(data)
|
|
got := bmt.Sum(nil)
|
|
if !bytes.Equal(got, exp) {
|
|
c <- fmt.Errorf("wrong hash: expected %x, got %x", exp, got)
|
|
}
|
|
close(c)
|
|
}()
|
|
select {
|
|
case <-timeout.C:
|
|
err = fmt.Errorf("BMT hash calculation timed out")
|
|
case err = <-c:
|
|
}
|
|
return err
|
|
}
|
|
|
|
func BenchmarkSHA3_4k(t *testing.B) { benchmarkSHA3(4096, t) }
|
|
func BenchmarkSHA3_2k(t *testing.B) { benchmarkSHA3(4096/2, t) }
|
|
func BenchmarkSHA3_1k(t *testing.B) { benchmarkSHA3(4096/4, t) }
|
|
func BenchmarkSHA3_512b(t *testing.B) { benchmarkSHA3(4096/8, t) }
|
|
func BenchmarkSHA3_256b(t *testing.B) { benchmarkSHA3(4096/16, t) }
|
|
func BenchmarkSHA3_128b(t *testing.B) { benchmarkSHA3(4096/32, t) }
|
|
|
|
func BenchmarkBMTBaseline_4k(t *testing.B) { benchmarkBMTBaseline(4096, t) }
|
|
func BenchmarkBMTBaseline_2k(t *testing.B) { benchmarkBMTBaseline(4096/2, t) }
|
|
func BenchmarkBMTBaseline_1k(t *testing.B) { benchmarkBMTBaseline(4096/4, t) }
|
|
func BenchmarkBMTBaseline_512b(t *testing.B) { benchmarkBMTBaseline(4096/8, t) }
|
|
func BenchmarkBMTBaseline_256b(t *testing.B) { benchmarkBMTBaseline(4096/16, t) }
|
|
func BenchmarkBMTBaseline_128b(t *testing.B) { benchmarkBMTBaseline(4096/32, t) }
|
|
|
|
func BenchmarkRefHasher_4k(t *testing.B) { benchmarkRefHasher(4096, t) }
|
|
func BenchmarkRefHasher_2k(t *testing.B) { benchmarkRefHasher(4096/2, t) }
|
|
func BenchmarkRefHasher_1k(t *testing.B) { benchmarkRefHasher(4096/4, t) }
|
|
func BenchmarkRefHasher_512b(t *testing.B) { benchmarkRefHasher(4096/8, t) }
|
|
func BenchmarkRefHasher_256b(t *testing.B) { benchmarkRefHasher(4096/16, t) }
|
|
func BenchmarkRefHasher_128b(t *testing.B) { benchmarkRefHasher(4096/32, t) }
|
|
|
|
func BenchmarkHasher_4k(t *testing.B) { benchmarkHasher(4096, t) }
|
|
func BenchmarkHasher_2k(t *testing.B) { benchmarkHasher(4096/2, t) }
|
|
func BenchmarkHasher_1k(t *testing.B) { benchmarkHasher(4096/4, t) }
|
|
func BenchmarkHasher_512b(t *testing.B) { benchmarkHasher(4096/8, t) }
|
|
func BenchmarkHasher_256b(t *testing.B) { benchmarkHasher(4096/16, t) }
|
|
func BenchmarkHasher_128b(t *testing.B) { benchmarkHasher(4096/32, t) }
|
|
|
|
func BenchmarkHasherNoReuse_4k(t *testing.B) { benchmarkHasherReuse(1, 4096, t) }
|
|
func BenchmarkHasherNoReuse_2k(t *testing.B) { benchmarkHasherReuse(1, 4096/2, t) }
|
|
func BenchmarkHasherNoReuse_1k(t *testing.B) { benchmarkHasherReuse(1, 4096/4, t) }
|
|
func BenchmarkHasherNoReuse_512b(t *testing.B) { benchmarkHasherReuse(1, 4096/8, t) }
|
|
func BenchmarkHasherNoReuse_256b(t *testing.B) { benchmarkHasherReuse(1, 4096/16, t) }
|
|
func BenchmarkHasherNoReuse_128b(t *testing.B) { benchmarkHasherReuse(1, 4096/32, t) }
|
|
|
|
func BenchmarkHasherReuse_4k(t *testing.B) { benchmarkHasherReuse(16, 4096, t) }
|
|
func BenchmarkHasherReuse_2k(t *testing.B) { benchmarkHasherReuse(16, 4096/2, t) }
|
|
func BenchmarkHasherReuse_1k(t *testing.B) { benchmarkHasherReuse(16, 4096/4, t) }
|
|
func BenchmarkHasherReuse_512b(t *testing.B) { benchmarkHasherReuse(16, 4096/8, t) }
|
|
func BenchmarkHasherReuse_256b(t *testing.B) { benchmarkHasherReuse(16, 4096/16, t) }
|
|
func BenchmarkHasherReuse_128b(t *testing.B) { benchmarkHasherReuse(16, 4096/32, t) }
|
|
|
|
// benchmarks the minimum hashing time for a balanced (for simplicity) BMT
|
|
// by doing count/segmentsize parallel hashings of 2*segmentsize bytes
|
|
// doing it on n maxproccnt each reusing the base hasher
|
|
// the premise is that this is the minimum computation needed for a BMT
|
|
// therefore this serves as a theoretical optimum for concurrent implementations
|
|
func benchmarkBMTBaseline(n int, t *testing.B) {
|
|
tdata := testDataReader(64)
|
|
data := make([]byte, 64)
|
|
tdata.Read(data)
|
|
hasher := sha3.NewKeccak256
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
for i := 0; i < t.N; i++ {
|
|
count := int32((n-1)/hasher().Size() + 1)
|
|
wg := sync.WaitGroup{}
|
|
wg.Add(maxproccnt)
|
|
var i int32
|
|
for j := 0; j < maxproccnt; j++ {
|
|
go func() {
|
|
defer wg.Done()
|
|
h := hasher()
|
|
for atomic.AddInt32(&i, 1) < count {
|
|
h.Reset()
|
|
h.Write(data)
|
|
h.Sum(nil)
|
|
}
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
}
|
|
|
|
func benchmarkHasher(n int, t *testing.B) {
|
|
tdata := testDataReader(n)
|
|
data := make([]byte, n)
|
|
tdata.Read(data)
|
|
|
|
size := 1
|
|
hasher := sha3.NewKeccak256
|
|
segmentCount := 128
|
|
pool := NewTreePool(hasher, segmentCount, size)
|
|
bmt := New(pool)
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
for i := 0; i < t.N; i++ {
|
|
bmt.Reset()
|
|
bmt.Write(data)
|
|
bmt.Sum(nil)
|
|
}
|
|
}
|
|
|
|
func benchmarkHasherReuse(poolsize, n int, t *testing.B) {
|
|
tdata := testDataReader(n)
|
|
data := make([]byte, n)
|
|
tdata.Read(data)
|
|
|
|
hasher := sha3.NewKeccak256
|
|
segmentCount := 128
|
|
pool := NewTreePool(hasher, segmentCount, poolsize)
|
|
cycles := 200
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
for i := 0; i < t.N; i++ {
|
|
wg := sync.WaitGroup{}
|
|
wg.Add(cycles)
|
|
for j := 0; j < cycles; j++ {
|
|
bmt := New(pool)
|
|
go func() {
|
|
defer wg.Done()
|
|
bmt.Reset()
|
|
bmt.Write(data)
|
|
bmt.Sum(nil)
|
|
}()
|
|
}
|
|
wg.Wait()
|
|
}
|
|
}
|
|
|
|
func benchmarkSHA3(n int, t *testing.B) {
|
|
data := make([]byte, n)
|
|
tdata := testDataReader(n)
|
|
tdata.Read(data)
|
|
hasher := sha3.NewKeccak256
|
|
h := hasher()
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
for i := 0; i < t.N; i++ {
|
|
h.Reset()
|
|
h.Write(data)
|
|
h.Sum(nil)
|
|
}
|
|
}
|
|
|
|
func benchmarkRefHasher(n int, t *testing.B) {
|
|
data := make([]byte, n)
|
|
tdata := testDataReader(n)
|
|
tdata.Read(data)
|
|
hasher := sha3.NewKeccak256
|
|
rbmt := NewRefHasher(hasher, 128)
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
for i := 0; i < t.N; i++ {
|
|
rbmt.Hash(data)
|
|
}
|
|
}
|