interesting
/
go-ethereum
mirror of https://github.com/ethereum/go-ethereum.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Moved pow

This commit is contained in:
obscuren 2014-12-10 16:45:16 +01:00
parent 4082c8b61d
commit 1b98cbbfa4
8 changed files with 120 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
core/block_manager.go
View File

@ -14,6 +14,8 @@ import (
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/pow"
"github.com/ethereum/go-ethereum/pow/ezp"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/wire"
)
@ -55,7 +57,7 @@ type BlockManager struct {
// non-persistent key/value memory storage
mem map[string]*big.Int
// Proof of work used for validating
Pow PoW
Pow pow.PoW
// The ethereum manager interface
eth EthManager
// The managed states
@ -78,7 +80,7 @@ type BlockManager struct {
func NewBlockManager(ethereum EthManager) *BlockManager {
sm := &BlockManager{
mem: make(map[string]*big.Int),
Pow: &EasyPow{},
Pow: ezp.New(),
eth: ethereum,
bc: ethereum.ChainManager(),
}
@ -327,7 +329,7 @@ func (sm *BlockManager) ValidateBlock(block, parent *types.Block) error {
*/
// Verify the nonce of the block. Return an error if it's not valid
if !sm.Pow.Verify(block.HashNoNonce(), block.Difficulty, block.Nonce) {
if !sm.Pow.Verify(block /*block.HashNoNonce(), block.Difficulty, block.Nonce*/) {
return ValidationError("Block's nonce is invalid (= %v)", ethutil.Bytes2Hex(block.Nonce))
}

85
core/dagger.go
View File

@ -6,8 +6,6 @@ import (
"math/rand"
"time"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/obscuren/sha3"
@ -15,89 +13,6 @@ import (
var powlogger = logger.NewLogger("POW")
type PoW interface {
Search(block *types.Block, stop <-chan struct{}) []byte
Verify(hash []byte, diff *big.Int, nonce []byte) bool
GetHashrate() int64
Turbo(bool)
}
type EasyPow struct {
hash *big.Int
HashRate int64
turbo bool
}
func (pow *EasyPow) GetHashrate() int64 {
return pow.HashRate
}
func (pow *EasyPow) Turbo(on bool) {
pow.turbo = on
}
func (pow *EasyPow) Search(block *types.Block, stop <-chan struct{}) []byte {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
hash := block.HashNoNonce()
diff := block.Difficulty
i := int64(0)
start := time.Now().UnixNano()
t := time.Now()
for {
select {
case <-stop:
powlogger.Infoln("Breaking from mining")
pow.HashRate = 0
return nil
default:
i++
if time.Since(t) > (1 * time.Second) {
elapsed := time.Now().UnixNano() - start
hashes := ((float64(1e9) / float64(elapsed)) * float64(i)) / 1000
pow.HashRate = int64(hashes)
powlogger.Infoln("Hashing @", pow.HashRate, "khash")
t = time.Now()
}
sha := crypto.Sha3(big.NewInt(r.Int63()).Bytes())
if pow.Verify(hash, diff, sha) {
return sha
}
}
if !pow.turbo {
time.Sleep(20 * time.Microsecond)
}
}
return nil
}
func (pow *EasyPow) Verify(hash []byte, diff *big.Int, nonce []byte) bool {
sha := sha3.NewKeccak256()
d := append(hash, nonce...)
sha.Write(d)
verification := new(big.Int).Div(ethutil.BigPow(2, 256), diff)
res := ethutil.U256(ethutil.BigD(sha.Sum(nil)))
/*
fmt.Printf("hash w/o nonce %x\n", hash)
fmt.Printf("2**256 / %v = %v\n", diff, verification)
fmt.Printf("%v <= %v\n", res, verification)
fmt.Printf("vlen: %d rlen: %d\n", len(verification.Bytes()), len(res.Bytes()))
*/
return res.Cmp(verification) <= 0
}
func (pow *EasyPow) SetHash(hash *big.Int) {
}
type Dagger struct {
hash *big.Int
xn *big.Int

1
core/simple_pow.go Normal file
View File

@ -0,0 +1 @@
package core

3
core/types/block.go
View File

@ -411,3 +411,6 @@ func (self *Block) Size() ethutil.StorageSize {
func (self *Block) RlpData() interface{} {
return self.Value().Val
}
// Implement pow.Block
func (self *Block) N() []byte { return self.Nonce }

8
miner/miner.go
View File

@ -29,6 +29,8 @@ import (
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/pow"
"github.com/ethereum/go-ethereum/pow/ezp"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
@ -59,7 +61,7 @@ type Miner struct {
localTxs map[int]*LocalTx
localTxId int
pow core.PoW
pow pow.PoW
quitCh chan struct{}
powQuitCh chan struct{}
@ -74,7 +76,7 @@ func New(coinbase []byte, eth *eth.Ethereum) *Miner {
return &Miner{
eth: eth,
powQuitCh: make(chan struct{}),
pow: &core.EasyPow{},
pow: ezp.New(),
mining: false,
localTxs: make(map[int]*LocalTx),
MinAcceptedGasPrice: big.NewInt(10000000000000),
@ -82,7 +84,7 @@ func New(coinbase []byte, eth *eth.Ethereum) *Miner {
}
}
func (self *Miner) GetPow() core.PoW {
func (self *Miner) GetPow() pow.PoW {
return self.pow
}

9
pow/block.go Normal file
View File

@ -0,0 +1,9 @@
package pow
import "math/big"
type Block interface {
Diff() *big.Int
HashNoNonce() []byte
N() []byte
}

89
pow/ezp/pow.go Normal file
View File

@ -0,0 +1,89 @@
package ezp
import (
"math/big"
"math/rand"
"time"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/pow"
"github.com/obscuren/sha3"
)
var powlogger = logger.NewLogger("POW")
type EasyPow struct {
hash *big.Int
HashRate int64
turbo bool
}
func New() *EasyPow {
return &EasyPow{}
}
func (pow *EasyPow) GetHashrate() int64 {
return pow.HashRate
}
func (pow *EasyPow) Turbo(on bool) {
pow.turbo = on
}
func (pow *EasyPow) Search(block pow.Block, stop <-chan struct{}) []byte {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
hash := block.HashNoNonce()
diff := block.Diff()
i := int64(0)
start := time.Now().UnixNano()
t := time.Now()
for {
select {
case <-stop:
powlogger.Infoln("Breaking from mining")
pow.HashRate = 0
return nil
default:
i++
if time.Since(t) > (1 * time.Second) {
elapsed := time.Now().UnixNano() - start
hashes := ((float64(1e9) / float64(elapsed)) * float64(i)) / 1000
pow.HashRate = int64(hashes)
powlogger.Infoln("Hashing @", pow.HashRate, "khash")
t = time.Now()
}
sha := crypto.Sha3(big.NewInt(r.Int63()).Bytes())
if pow.verify(hash, diff, sha) {
return sha
}
}
if !pow.turbo {
time.Sleep(20 * time.Microsecond)
}
}
return nil
}
func (pow *EasyPow) verify(hash []byte, diff *big.Int, nonce []byte) bool {
sha := sha3.NewKeccak256()
d := append(hash, nonce...)
sha.Write(d)
verification := new(big.Int).Div(ethutil.BigPow(2, 256), diff)
res := ethutil.U256(ethutil.BigD(sha.Sum(nil)))
return res.Cmp(verification) <= 0
}
func (pow *EasyPow) Verify(block pow.Block) bool {
return pow.verify(block.HashNoNonce(), block.Diff(), block.N())
}

8
pow/pow.go Normal file
View File

@ -0,0 +1,8 @@
package pow
type PoW interface {
Search(block Block, stop <-chan struct{}) []byte
Verify(block Block) bool
GetHashrate() int64
Turbo(bool)
}