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core, core/state: batch-based state sync

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This commit is contained in:
Felix Lange 2015-08-18 14:14:45 +02:00
parent 565d9f2306
commit a2d5a60418
10 changed files with 90 additions and 90 deletions
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20
core/block_processor.go
View File

@ -100,10 +100,8 @@ func (self *BlockProcessor) ApplyTransaction(gp GasPool, statedb *state.StateDB,
}
// Update the state with pending changes
statedb.SyncIntermediate()
usedGas.Add(usedGas, gas)
receipt := types.NewReceipt(statedb.Root().Bytes(), usedGas)
receipt := types.NewReceipt(statedb.IntermediateRoot().Bytes(), usedGas)
receipt.TxHash = tx.Hash()
receipt.GasUsed = new(big.Int).Set(gas)
if MessageCreatesContract(tx) {
@ -265,16 +263,16 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
// Accumulate static rewards; block reward, uncle's and uncle inclusion.
AccumulateRewards(state, header, uncles)
// Commit state objects/accounts to a temporary trie (does not save)
// used to calculate the state root.
state.SyncObjects()
if header.Root != state.Root() {
err = fmt.Errorf("invalid merkle root. received=%x got=%x", header.Root, state.Root())
return
// Commit state objects/accounts to a database batch and calculate
// the state root. The database is not modified if the root
// doesn't match.
root, batch := state.CommitBatch()
if header.Root != root {
return nil, nil, fmt.Errorf("invalid merkle root: header=%x computed=%x", header.Root, root)
}
// Sync the current block's state to the database
state.Sync()
// Execute the database writes.
batch.Write()
return state.Logs(), receipts, nil
}

14
core/chain_makers.go
View File

@ -17,6 +17,7 @@
package core
import (
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
@ -94,9 +95,9 @@ func (b *BlockGen) AddTx(tx *types.Transaction) {
if err != nil {
panic(err)
}
b.statedb.SyncIntermediate()
root := b.statedb.IntermediateRoot()
b.header.GasUsed.Add(b.header.GasUsed, gas)
receipt := types.NewReceipt(b.statedb.Root().Bytes(), b.header.GasUsed)
receipt := types.NewReceipt(root.Bytes(), b.header.GasUsed)
logs := b.statedb.GetLogs(tx.Hash())
receipt.SetLogs(logs)
receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
@ -163,8 +164,11 @@ func GenerateChain(parent *types.Block, db ethdb.Database, n int, gen func(int,
gen(i, b)
}
AccumulateRewards(statedb, h, b.uncles)
statedb.SyncIntermediate()
h.Root = statedb.Root()
root, err := statedb.Commit()
if err != nil {
panic(fmt.Sprintf("state write error: %v", err))
}
h.Root = root
return types.NewBlock(h, b.txs, b.uncles, b.receipts)
}
for i := 0; i < n; i++ {
@ -184,7 +188,7 @@ func makeHeader(parent *types.Block, state *state.StateDB) *types.Header {
time = new(big.Int).Add(parent.Time(), big.NewInt(10)) // block time is fixed at 10 seconds
}
return &types.Header{
Root: state.Root(),
Root: state.IntermediateRoot(),
ParentHash: parent.Hash(),
Coinbase: parent.Coinbase(),
Difficulty: CalcDifficulty(time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()),

8
core/chain_manager.go
View File

@ -839,8 +839,8 @@ out:
}
func blockErr(block *types.Block, err error) {
h := block.Header()
glog.V(logger.Error).Infof("Bad block #%v (%x)\n", h.Number, h.Hash().Bytes())
glog.V(logger.Error).Infoln(err)
glog.V(logger.Debug).Infoln(verifyNonces)
if glog.V(logger.Error) {
glog.Errorf("Bad block #%v (%s)\n", block.Number(), block.Hash().Hex())
glog.Errorf(" %v", err)
}
}

16
core/genesis.go
View File

@ -69,7 +69,7 @@ func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block,
statedb.SetState(address, common.HexToHash(key), common.HexToHash(value))
}
}
statedb.SyncObjects()
root, stateBatch := statedb.CommitBatch()
difficulty := common.String2Big(genesis.Difficulty)
block := types.NewBlock(&types.Header{
@ -81,7 +81,7 @@ func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block,
Difficulty: difficulty,
MixDigest: common.HexToHash(genesis.Mixhash),
Coinbase: common.HexToAddress(genesis.Coinbase),
Root: statedb.Root(),
Root: root,
}, nil, nil, nil)
if block := GetBlock(chainDb, block.Hash()); block != nil {
@ -92,8 +92,10 @@ func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block,
}
return block, nil
}
statedb.Sync()
if err := stateBatch.Write(); err != nil {
return nil, fmt.Errorf("cannot write state: %v", err)
}
if err := WriteTd(chainDb, block.Hash(), difficulty); err != nil {
return nil, err
}
@ -115,12 +117,14 @@ func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big
statedb := state.New(common.Hash{}, db)
obj := statedb.GetOrNewStateObject(addr)
obj.SetBalance(balance)
statedb.SyncObjects()
statedb.Sync()
root, err := statedb.Commit()
if err != nil {
panic(fmt.Sprintf("cannot write state: %v", err))
}
block := types.NewBlock(&types.Header{
Difficulty: params.GenesisDifficulty,
GasLimit: params.GenesisGasLimit,
Root: statedb.Root(),
Root: root,
}, nil, nil, nil)
return block
}

8
core/state/state_object.go
View File

@ -218,6 +218,7 @@ func (c *StateObject) ReturnGas(gas, price *big.Int) {}
func (self *StateObject) SetGasLimit(gasLimit *big.Int) {
self.gasPool = new(big.Int).Set(gasLimit)
self.dirty = true
if glog.V(logger.Core) {
glog.Infof("%x: gas (+ %v)", self.Address(), self.gasPool)
@ -228,19 +229,14 @@ func (self *StateObject) SubGas(gas, price *big.Int) error {
if self.gasPool.Cmp(gas) < 0 {
return GasLimitError(self.gasPool, gas)
}
self.gasPool.Sub(self.gasPool, gas)
rGas := new(big.Int).Set(gas)
rGas.Mul(rGas, price)
self.dirty = true
return nil
}
func (self *StateObject) AddGas(gas, price *big.Int) {
self.gasPool.Add(self.gasPool, gas)
self.dirty = true
}
func (self *StateObject) Copy() *StateObject {

3
core/state/state_test.go
View File

@ -89,8 +89,7 @@ func TestNull(t *testing.T) {
//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
var value common.Hash
state.SetState(address, common.Hash{}, value)
state.SyncIntermediate()
state.Sync()
state.Commit()
value = state.GetState(address, common.Hash{})
if !common.EmptyHash(value) {
t.Errorf("expected empty hash. got %x", value)

86
core/state/statedb.go
View File

@ -35,7 +35,6 @@ import (
type StateDB struct {
db ethdb.Database
trie *trie.SecureTrie
root common.Hash
stateObjects map[string]*StateObject
@ -56,7 +55,6 @@ func New(root common.Hash, db ethdb.Database) *StateDB {
glog.Errorf("can't create state trie with root %x: %v", root[:], err)
}
return &StateDB{
root: root,
db: db,
trie: tr,
stateObjects: make(map[string]*StateObject),
@ -204,7 +202,6 @@ func (self *StateDB) UpdateStateObject(stateObject *StateObject) {
if len(stateObject.CodeHash()) > 0 {
self.db.Put(stateObject.CodeHash(), stateObject.code)
}
addr := stateObject.Address()
self.trie.Update(addr[:], stateObject.RlpEncode())
}
@ -215,6 +212,7 @@ func (self *StateDB) DeleteStateObject(stateObject *StateObject) {
addr := stateObject.Address()
self.trie.Delete(addr[:])
//delete(self.stateObjects, addr.Str())
}
// Retrieve a state object given my the address. Nil if not found
@ -311,65 +309,67 @@ func (self *StateDB) Set(state *StateDB) {
self.logSize = state.logSize
}
func (s *StateDB) Root() common.Hash {
return s.trie.Hash()
}
// Syncs the trie and all siblings
func (s *StateDB) Sync() {
// Sync all nested states
// IntermediateRoot computes the current root hash of the state trie.
// It is called in between transactions to get the root hash that
// goes into transaction receipts.
func (s *StateDB) IntermediateRoot() common.Hash {
s.refund = new(big.Int)
for _, stateObject := range s.stateObjects {
stateObject.trie.Commit()
}
s.trie.Commit()
s.Empty()
}
func (self *StateDB) Empty() {
self.stateObjects = make(map[string]*StateObject)
self.refund = new(big.Int)
}
func (self *StateDB) Refunds() *big.Int {
return self.refund
}
// SyncIntermediate updates the intermediate state and all mid steps
func (self *StateDB) SyncIntermediate() {
self.refund = new(big.Int)
for _, stateObject := range self.stateObjects {
if stateObject.dirty {
if stateObject.remove {
self.DeleteStateObject(stateObject)
s.DeleteStateObject(stateObject)
} else {
stateObject.Update()
self.UpdateStateObject(stateObject)
s.UpdateStateObject(stateObject)
}
stateObject.dirty = false
}
}
return s.trie.Hash()
}
// SyncObjects syncs the changed objects to the trie
func (self *StateDB) SyncObjects() {
self.trie, _ = trie.NewSecure(self.root, self.db)
// Commit commits all state changes to the database.
func (s *StateDB) Commit() (root common.Hash, err error) {
return s.commit(s.db)
}
self.refund = new(big.Int)
// CommitBatch commits all state changes to a write batch but does not
// execute the batch. It is used to validate state changes against
// the root hash stored in a block.
func (s *StateDB) CommitBatch() (root common.Hash, batch ethdb.Batch) {
batch = s.db.NewBatch()
root, _ = s.commit(batch)
return root, batch
}
for _, stateObject := range self.stateObjects {
func (s *StateDB) commit(db trie.DatabaseWriter) (common.Hash, error) {
s.refund = new(big.Int)
for _, stateObject := range s.stateObjects {
if stateObject.remove {
self.DeleteStateObject(stateObject)
// If the object has been removed, don't bother syncing it
// and just mark it for deletion in the trie.
s.DeleteStateObject(stateObject)
} else {
// Write any storage changes in the state object to its trie.
stateObject.Update()
self.UpdateStateObject(stateObject)
// Commit the trie of the object to the batch.
// This updates the trie root internally, so
// getting the root hash of the storage trie
// through UpdateStateObject is fast.
if _, err := stateObject.trie.CommitTo(db); err != nil {
return common.Hash{}, err
}
// Update the object in the account trie.
s.UpdateStateObject(stateObject)
}
stateObject.dirty = false
}
return s.trie.CommitTo(db)
}
func (self *StateDB) Refunds() *big.Int {
return self.refund
}
// Debug stuff

5
miner/worker.go
View File

@ -266,7 +266,6 @@ func (self *worker) wait() {
block := result.Block
work := result.Work
work.state.Sync()
if self.fullValidation {
if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil {
glog.V(logger.Error).Infoln("mining err", err)
@ -274,6 +273,7 @@ func (self *worker) wait() {
}
go self.mux.Post(core.NewMinedBlockEvent{block})
} else {
work.state.Commit()
parent := self.chain.GetBlock(block.ParentHash())
if parent == nil {
glog.V(logger.Error).Infoln("Invalid block found during mining")
@ -528,8 +528,7 @@ func (self *worker) commitNewWork() {
if atomic.LoadInt32(&self.mining) == 1 {
// commit state root after all state transitions.
core.AccumulateRewards(work.state, header, uncles)
work.state.SyncObjects()
header.Root = work.state.Root()
header.Root = work.state.IntermediateRoot()
}
// create the new block whose nonce will be mined.

12
tests/block_test_util.go
View File

@ -253,13 +253,13 @@ func (t *BlockTest) InsertPreState(ethereum *eth.Ethereum) (*state.StateDB, erro
statedb.SetState(common.HexToAddress(addrString), common.HexToHash(k), common.HexToHash(v))
}
}
// sync objects to trie
statedb.SyncObjects()
// sync trie to disk
statedb.Sync()
if !bytes.Equal(t.Genesis.Root().Bytes(), statedb.Root().Bytes()) {
return nil, fmt.Errorf("computed state root does not match genesis block %x %x", t.Genesis.Root().Bytes()[:4], statedb.Root().Bytes()[:4])
root, err := statedb.Commit()
if err != nil {
return nil, fmt.Errorf("error writing state: %v", err)
}
if t.Genesis.Root() != root {
return nil, fmt.Errorf("computed state root does not match genesis block: genesis=%x computed=%x", t.Genesis.Root().Bytes()[:4], root.Bytes()[:4])
}
return statedb, nil
}

8
tests/state_test_util.go
View File

@ -200,9 +200,9 @@ func runStateTest(test VmTest) error {
}
}
statedb.Sync()
if common.HexToHash(test.PostStateRoot) != statedb.Root() {
return fmt.Errorf("Post state root error. Expected %s, got %x", test.PostStateRoot, statedb.Root())
root, _ := statedb.Commit()
if common.HexToHash(test.PostStateRoot) != root {
return fmt.Errorf("Post state root error. Expected %s, got %x", test.PostStateRoot, root)
}
// check logs
@ -246,7 +246,7 @@ func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.
if core.IsNonceErr(err) || core.IsInvalidTxErr(err) || state.IsGasLimitErr(err) {
statedb.Set(snapshot)
}
statedb.SyncObjects()
statedb.Commit()
return ret, vmenv.state.Logs(), vmenv.Gas, err
}