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core: improve block gas tracking

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This commit is contained in:
Felix Lange
2015-09-01 21:35:30 +02:00
parent 1ffc5b0cfd
commit 00b45acb9e
2 changed files with 27 additions and 24 deletions
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28
core/block_processor.go
View File

@@ -56,6 +56,18 @@ type BlockProcessor struct {
eventMux *event.TypeMux
}
// TODO: type GasPool big.Int
//
// GasPool is implemented by state.StateObject. This is a historical
// coincidence. Gas tracking should move out of StateObject.
// GasPool tracks the amount of gas available during
// execution of the transactions in a block.
type GasPool interface {
AddGas(gas, price *big.Int)
SubGas(gas, price *big.Int) error
}
func NewBlockProcessor(db common.Database, pow pow.PoW, chainManager *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
sm := &BlockProcessor{
chainDb: db,
@@ -64,16 +76,15 @@ func NewBlockProcessor(db common.Database, pow pow.PoW, chainManager *ChainManag
bc: chainManager,
eventMux: eventMux,
}
return sm
}
func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block *types.Block, transientProcess bool) (receipts types.Receipts, err error) {
coinbase := statedb.GetOrNewStateObject(block.Coinbase())
coinbase.SetGasLimit(block.GasLimit())
gp := statedb.GetOrNewStateObject(block.Coinbase())
gp.SetGasLimit(block.GasLimit())
// Process the transactions on to parent state
receipts, err = sm.ApplyTransactions(coinbase, statedb, block, block.Transactions(), transientProcess)
receipts, err = sm.ApplyTransactions(gp, statedb, block, block.Transactions(), transientProcess)
if err != nil {
return nil, err
}
@@ -81,9 +92,8 @@ func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block
return receipts, nil
}
func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
cb := statedb.GetStateObject(coinbase.Address())
_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, cb)
func (self *BlockProcessor) ApplyTransaction(gp GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, gp)
if err != nil {
return nil, nil, err
}
@@ -118,7 +128,7 @@ func (self *BlockProcessor) ChainManager() *ChainManager {
return self.bc
}
func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
var (
receipts types.Receipts
totalUsedGas = big.NewInt(0)
@@ -130,7 +140,7 @@ func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, state
for i, tx := range txs {
statedb.StartRecord(tx.Hash(), block.Hash(), i)
receipt, txGas, err := self.ApplyTransaction(coinbase, statedb, header, tx, totalUsedGas, transientProcess)
receipt, txGas, err := self.ApplyTransaction(gp, statedb, header, tx, totalUsedGas, transientProcess)
if err != nil {
return nil, err
}

23
core/state_transition.go
View File

@@ -45,7 +45,7 @@ import (
* 6) Derive new state root
*/
type StateTransition struct {
coinbase common.Address
gp GasPool
msg Message
gas, gasPrice *big.Int
initialGas *big.Int
@@ -53,8 +53,6 @@ type StateTransition struct {
data []byte
state *state.StateDB
cb, rec, sen *state.StateObject
env vm.Environment
}
@@ -96,13 +94,13 @@ func IntrinsicGas(data []byte) *big.Int {
return igas
}
func ApplyMessage(env vm.Environment, msg Message, coinbase *state.StateObject) ([]byte, *big.Int, error) {
return NewStateTransition(env, msg, coinbase).transitionState()
func ApplyMessage(env vm.Environment, msg Message, gp GasPool) ([]byte, *big.Int, error) {
return NewStateTransition(env, msg, gp).transitionState()
}
func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateObject) *StateTransition {
func NewStateTransition(env vm.Environment, msg Message, gp GasPool) *StateTransition {
return &StateTransition{
coinbase: coinbase.Address(),
gp: gp,
env: env,
msg: msg,
gas: new(big.Int),
@@ -111,13 +109,9 @@ func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateOb
value: msg.Value(),
data: msg.Data(),
state: env.State(),
cb: coinbase,
}
}
func (self *StateTransition) Coinbase() *state.StateObject {
return self.state.GetOrNewStateObject(self.coinbase)
}
func (self *StateTransition) From() (*state.StateObject, error) {
f, err := self.msg.From()
if err != nil {
@@ -160,7 +154,7 @@ func (self *StateTransition) BuyGas() error {
if sender.Balance().Cmp(mgval) < 0 {
return fmt.Errorf("insufficient ETH for gas (%x). Req %v, has %v", sender.Address().Bytes()[:4], mgval, sender.Balance())
}
if err = self.Coinbase().SubGas(mgas, self.gasPrice); err != nil {
if err = self.gp.SubGas(mgas, self.gasPrice); err != nil {
return err
}
self.AddGas(mgas)
@@ -241,13 +235,12 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
}
self.refundGas()
self.state.AddBalance(self.coinbase, new(big.Int).Mul(self.gasUsed(), self.gasPrice))
self.state.AddBalance(self.env.Coinbase(), new(big.Int).Mul(self.gasUsed(), self.gasPrice))
return ret, self.gasUsed(), err
}
func (self *StateTransition) refundGas() {
coinbase := self.Coinbase()
sender, _ := self.From() // err already checked
// Return remaining gas
remaining := new(big.Int).Mul(self.gas, self.gasPrice)
@@ -258,7 +251,7 @@ func (self *StateTransition) refundGas() {
self.gas.Add(self.gas, refund)
self.state.AddBalance(sender.Address(), refund.Mul(refund, self.gasPrice))
coinbase.AddGas(self.gas, self.gasPrice)
self.gp.AddGas(self.gas, self.gasPrice)
}
func (self *StateTransition) gasUsed() *big.Int {