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authorJeffrey Wilcke <geffobscura@gmail.com>2015-06-30 08:22:19 +0800
committerJeffrey Wilcke <geffobscura@gmail.com>2015-06-30 08:22:19 +0800
commit7625b07dd9a2a7b5c5a504c1276eea04596ac871 (patch)
treece2a757cd4e0591fc15815b2dfae528ae517d36e /core/state_transition.go
parent72e2613a9fe3205fa5a67b72b832e03b2357ee88 (diff)
parent8f504063f465e0ca10c6bb53ee914d10a3d45c86 (diff)
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Merge branch 'release/0.9.34'v0.9.34
Diffstat (limited to 'core/state_transition.go')
-rw-r--r--core/state_transition.go66
1 files changed, 31 insertions, 35 deletions
diff --git a/core/state_transition.go b/core/state_transition.go
index 915dd466b..e2212dfef 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -13,10 +13,6 @@ import (
"github.com/ethereum/go-ethereum/params"
)
-const tryJit = false
-
-var ()
-
/*
* The State transitioning model
*
@@ -69,20 +65,24 @@ func MessageCreatesContract(msg Message) bool {
return msg.To() == nil
}
-func MessageGasValue(msg Message) *big.Int {
- return new(big.Int).Mul(msg.Gas(), msg.GasPrice())
-}
-
-func IntrinsicGas(msg Message) *big.Int {
+// IntrinsicGas computes the 'intrisic gas' for a message
+// with the given data.
+func IntrinsicGas(data []byte) *big.Int {
igas := new(big.Int).Set(params.TxGas)
- for _, byt := range msg.Data() {
- if byt != 0 {
- igas.Add(igas, params.TxDataNonZeroGas)
- } else {
- igas.Add(igas, params.TxDataZeroGas)
+ if len(data) > 0 {
+ var nz int64
+ for _, byt := range data {
+ if byt != 0 {
+ nz++
+ }
}
+ m := big.NewInt(nz)
+ m.Mul(m, params.TxDataNonZeroGas)
+ igas.Add(igas, m)
+ m.SetInt64(int64(len(data)) - nz)
+ m.Mul(m, params.TxDataZeroGas)
+ igas.Add(igas, m)
}
-
return igas
}
@@ -96,7 +96,7 @@ func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateOb
env: env,
msg: msg,
gas: new(big.Int),
- gasPrice: new(big.Int).Set(msg.GasPrice()),
+ gasPrice: msg.GasPrice(),
initialGas: new(big.Int),
value: msg.Value(),
data: msg.Data(),
@@ -140,26 +140,22 @@ func (self *StateTransition) AddGas(amount *big.Int) {
}
func (self *StateTransition) BuyGas() error {
- var err error
+ mgas := self.msg.Gas()
+ mgval := new(big.Int).Mul(mgas, self.gasPrice)
sender, err := self.From()
if err != nil {
return err
}
- if sender.Balance().Cmp(MessageGasValue(self.msg)) < 0 {
- return fmt.Errorf("insufficient ETH for gas (%x). Req %v, has %v", sender.Address().Bytes()[:4], MessageGasValue(self.msg), sender.Balance())
+ 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())
}
-
- coinbase := self.Coinbase()
- err = coinbase.SubGas(self.msg.Gas(), self.msg.GasPrice())
- if err != nil {
+ if err = self.Coinbase().SubGas(mgas, self.gasPrice); err != nil {
return err
}
-
- self.AddGas(self.msg.Gas())
- self.initialGas.Set(self.msg.Gas())
- sender.SubBalance(MessageGasValue(self.msg))
-
+ self.AddGas(mgas)
+ self.initialGas.Set(mgas)
+ sender.SubBalance(mgval)
return nil
}
@@ -195,14 +191,14 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
sender, _ := self.From() // err checked in preCheck
// Pay intrinsic gas
- if err = self.UseGas(IntrinsicGas(self.msg)); err != nil {
+ if err = self.UseGas(IntrinsicGas(self.data)); err != nil {
return nil, nil, InvalidTxError(err)
}
vmenv := self.env
var ref vm.ContextRef
if MessageCreatesContract(msg) {
- ret, err, ref = vmenv.Create(sender, self.msg.Data(), self.gas, self.gasPrice, self.value)
+ ret, err, ref = vmenv.Create(sender, self.data, self.gas, self.gasPrice, self.value)
if err == nil {
dataGas := big.NewInt(int64(len(ret)))
dataGas.Mul(dataGas, params.CreateDataGas)
@@ -216,7 +212,7 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
} else {
// Increment the nonce for the next transaction
self.state.SetNonce(sender.Address(), sender.Nonce()+1)
- ret, err = vmenv.Call(sender, self.To().Address(), self.msg.Data(), self.gas, self.gasPrice, self.value)
+ ret, err = vmenv.Call(sender, self.To().Address(), self.data, self.gas, self.gasPrice, self.value)
}
if err != nil && IsValueTransferErr(err) {
@@ -237,15 +233,15 @@ func (self *StateTransition) refundGas() {
coinbase := self.Coinbase()
sender, _ := self.From() // err already checked
// Return remaining gas
- remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
+ remaining := new(big.Int).Mul(self.gas, self.gasPrice)
sender.AddBalance(remaining)
- uhalf := new(big.Int).Div(self.gasUsed(), common.Big2)
+ uhalf := remaining.Div(self.gasUsed(), common.Big2)
refund := common.BigMin(uhalf, self.state.Refunds())
self.gas.Add(self.gas, refund)
- self.state.AddBalance(sender.Address(), refund.Mul(refund, self.msg.GasPrice()))
+ self.state.AddBalance(sender.Address(), refund.Mul(refund, self.gasPrice))
- coinbase.AddGas(self.gas, self.msg.GasPrice())
+ coinbase.AddGas(self.gas, self.gasPrice)
}
func (self *StateTransition) gasUsed() *big.Int {