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author | Jeffrey Wilcke <geffobscura@gmail.com> | 2015-06-30 08:22:19 +0800 |
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committer | Jeffrey Wilcke <geffobscura@gmail.com> | 2015-06-30 08:22:19 +0800 |
commit | 7625b07dd9a2a7b5c5a504c1276eea04596ac871 (patch) | |
tree | ce2a757cd4e0591fc15815b2dfae528ae517d36e /core/state_transition.go | |
parent | 72e2613a9fe3205fa5a67b72b832e03b2357ee88 (diff) | |
parent | 8f504063f465e0ca10c6bb53ee914d10a3d45c86 (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.go | 66 |
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 { |