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Gas corrections and vm fixes

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This commit is contained in:
obscuren 2014-12-18 21:58:26 +01:00
parent 5ad473d758
commit 198cc69357
8 changed files with 116 additions and 83 deletions
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2
core/block_manager.go
View File

@ -115,7 +115,7 @@ done:
cb := state.GetStateObject(coinbase.Address())
st := NewStateTransition(cb, tx, state, block)
err = st.TransitionState()
_, err = st.TransitionState()
if err != nil {
switch {
case IsNonceErr(err):

73
core/state_transition.go
View File

@ -31,6 +31,7 @@ type StateTransition struct {
coinbase, receiver []byte
msg Message
gas, gasPrice *big.Int
initialGas *big.Int
value *big.Int
data []byte
state *state.StateDB
@ -47,7 +48,6 @@ type Message interface {
From() []byte
To() []byte
GasValue() *big.Int
GasPrice() *big.Int
Gas() *big.Int
Value() *big.Int
@ -65,8 +65,12 @@ func MessageCreatesContract(msg Message) bool {
return len(msg.To()) == 0
}
func MessageGasValue(msg Message) *big.Int {
return new(big.Int).Mul(msg.Gas(), msg.GasPrice())
}
func NewStateTransition(coinbase *state.StateObject, msg Message, state *state.StateDB, block *types.Block) *StateTransition {
return &StateTransition{coinbase.Address(), msg.To(), msg, new(big.Int), new(big.Int).Set(msg.GasPrice()), msg.Value(), msg.Data(), state, block, coinbase, nil, nil, nil}
return &StateTransition{coinbase.Address(), msg.To(), msg, new(big.Int), new(big.Int).Set(msg.GasPrice()), new(big.Int), msg.Value(), msg.Data(), state, block, coinbase, nil, nil, nil}
}
func (self *StateTransition) VmEnv() vm.Environment {
@ -78,33 +82,16 @@ func (self *StateTransition) VmEnv() vm.Environment {
}
func (self *StateTransition) Coinbase() *state.StateObject {
if self.cb != nil {
return self.cb
}
self.cb = self.state.GetOrNewStateObject(self.coinbase)
return self.cb
return self.state.GetOrNewStateObject(self.coinbase)
}
func (self *StateTransition) From() *state.StateObject {
if self.sen != nil {
return self.sen
}
self.sen = self.state.GetOrNewStateObject(self.msg.From())
return self.sen
return self.state.GetOrNewStateObject(self.msg.From())
}
func (self *StateTransition) To() *state.StateObject {
if self.msg != nil && MessageCreatesContract(self.msg) {
return nil
}
if self.rec != nil {
return self.rec
}
self.rec = self.state.GetOrNewStateObject(self.msg.To())
return self.rec
return self.state.GetOrNewStateObject(self.msg.To())
}
func (self *StateTransition) UseGas(amount *big.Int) error {
@ -124,8 +111,8 @@ func (self *StateTransition) BuyGas() error {
var err error
sender := self.From()
if sender.Balance().Cmp(self.msg.GasValue()) < 0 {
return fmt.Errorf("Insufficient funds to pre-pay gas. Req %v, has %v", self.msg.GasValue(), sender.Balance())
if sender.Balance().Cmp(MessageGasValue(self.msg)) < 0 {
return fmt.Errorf("Insufficient funds to pre-pay gas. Req %v, has %v", MessageGasValue(self.msg), sender.Balance())
}
coinbase := self.Coinbase()
@ -135,20 +122,12 @@ func (self *StateTransition) BuyGas() error {
}
self.AddGas(self.msg.Gas())
sender.SubAmount(self.msg.GasValue())
self.initialGas.Set(self.msg.Gas())
sender.SubAmount(MessageGasValue(self.msg))
return nil
}
func (self *StateTransition) RefundGas() {
coinbase, sender := self.Coinbase(), self.From()
coinbase.RefundGas(self.gas, self.msg.GasPrice())
// Return remaining gas
remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
sender.AddAmount(remaining)
}
func (self *StateTransition) preCheck() (err error) {
var (
msg = self.msg
@ -168,7 +147,7 @@ func (self *StateTransition) preCheck() (err error) {
return nil
}
func (self *StateTransition) TransitionState() (err error) {
func (self *StateTransition) TransitionState() (ret []byte, err error) {
statelogger.Debugf("(~) %x\n", self.msg.Hash())
// XXX Transactions after this point are considered valid.
@ -204,7 +183,6 @@ func (self *StateTransition) TransitionState() (err error) {
return
}
var ret []byte
vmenv := self.VmEnv()
var ref vm.ClosureRef
if MessageCreatesContract(msg) {
@ -231,3 +209,26 @@ func MakeContract(msg Message, state *state.StateDB) *state.StateObject {
return contract
}
func (self *StateTransition) RefundGas() {
coinbaseSub := new(big.Int).Set(self.gas)
uhalf := new(big.Int).Div(self.GasUsed(), ethutil.Big2)
for addr, refs := range self.state.Refunds() {
for _, ref := range refs {
coinbaseSub.Add(self.gas, ref)
refund := ethutil.BigMin(uhalf, ref)
self.state.AddBalance([]byte(addr), refund.Mul(refund, self.msg.GasPrice()))
}
}
coinbase, sender := self.Coinbase(), self.From()
coinbase.RefundGas(coinbaseSub, self.msg.GasPrice())
// Return remaining gas
remaining := new(big.Int).Mul(self.gas, self.msg.GasPrice())
sender.AddAmount(remaining)
}
func (self *StateTransition) GasUsed() *big.Int {
return new(big.Int).Sub(self.initialGas, self.gas)
}

9
core/types/transaction.go
View File

@ -46,15 +46,6 @@ func NewTransactionFromValue(val *ethutil.Value) *Transaction {
return tx
}
func (self *Transaction) GasValue() *big.Int {
return new(big.Int).Mul(self.gas, self.gasPrice)
}
func (self *Transaction) TotalValue() *big.Int {
v := self.GasValue()
return v.Add(v, self.value)
}
func (tx *Transaction) Hash() []byte {
data := []interface{}{tx.Nonce, tx.gasPrice, tx.gas, tx.recipient, tx.Value, tx.Data}

30
state/state.go
View File

@ -23,14 +23,14 @@ type StateDB struct {
manifest *Manifest
refund map[string][]refund
refund map[string][]*big.Int
logs Logs
}
// Create a new state from a given trie
func New(trie *trie.Trie) *StateDB {
return &StateDB{Trie: trie, stateObjects: make(map[string]*StateObject), manifest: NewManifest(), refund: make(map[string][]refund)}
return &StateDB{Trie: trie, stateObjects: make(map[string]*StateObject), manifest: NewManifest(), refund: make(map[string][]*big.Int)}
}
func (self *StateDB) EmptyLogs() {
@ -55,12 +55,8 @@ func (self *StateDB) GetBalance(addr []byte) *big.Int {
return ethutil.Big0
}
type refund struct {
gas, price *big.Int
}
func (self *StateDB) Refund(addr []byte, gas, price *big.Int) {
self.refund[string(addr)] = append(self.refund[string(addr)], refund{gas, price})
func (self *StateDB) Refund(addr []byte, gas *big.Int) {
self.refund[string(addr)] = append(self.refund[string(addr)], gas)
}
func (self *StateDB) AddBalance(addr []byte, amount *big.Int) {
@ -273,23 +269,17 @@ func (s *StateDB) Sync() {
func (self *StateDB) Empty() {
self.stateObjects = make(map[string]*StateObject)
self.refund = make(map[string][]refund)
self.refund = make(map[string][]*big.Int)
}
func (self *StateDB) Refunds() map[string][]*big.Int {
return self.refund
}
func (self *StateDB) Update(gasUsed *big.Int) {
var deleted bool
// Refund any gas that's left
// XXX THIS WILL CHANGE IN POC8
uhalf := new(big.Int).Div(gasUsed, ethutil.Big2)
for addr, refs := range self.refund {
for _, ref := range refs {
refund := ethutil.BigMin(uhalf, ref.gas)
self.GetStateObject([]byte(addr)).AddBalance(refund.Mul(refund, ref.price))
}
}
self.refund = make(map[string][]refund)
self.refund = make(map[string][]*big.Int)
for _, stateObject := range self.stateObjects {
if stateObject.remove {

37
tests/helper/vm.go
View File

@ -44,6 +44,7 @@ func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues
env.time = ethutil.Big(envValues["currentTimestamp"]).Int64()
env.difficulty = ethutil.Big(envValues["currentDifficulty"])
env.gasLimit = ethutil.Big(envValues["currentGasLimit"])
env.Gas = new(big.Int)
return env
}
@ -110,7 +111,7 @@ func RunVm(state *state.StateDB, env, exec map[string]string) ([]byte, state.Log
return ret, vmenv.logs, vmenv.Gas, err
}
func RunState(state *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
var (
keyPair, _ = crypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(tx["secretKey"])))
to = FromHex(tx["to"])
@ -118,13 +119,39 @@ func RunState(state *state.StateDB, env, tx map[string]string) ([]byte, state.Lo
gas = ethutil.Big(tx["gasLimit"])
price = ethutil.Big(tx["gasPrice"])
value = ethutil.Big(tx["value"])
caddr = FromHex(env["currentCoinbase"])
)
caller := state.GetOrNewStateObject(keyPair.Address())
coinbase := statedb.GetOrNewStateObject(caddr)
coinbase.SetGasPool(ethutil.Big(env["currentGasLimit"]))
vmenv := NewEnvFromMap(state, env, tx)
vmenv.origin = caller.Address()
ret, err := vmenv.Call(caller, to, data, gas, price, value)
message := NewMessage(keyPair.Address(), to, data, value, gas, price)
Log.DebugDetailf("message{ to: %x, from %x, value: %v, gas: %v, price: %v }\n", message.to[:4], message.from[:4], message.value, message.gas, message.price)
st := core.NewStateTransition(coinbase, message, statedb, nil)
vmenv := NewEnvFromMap(statedb, env, tx)
vmenv.origin = keyPair.Address()
st.Env = vmenv
ret, err := st.TransitionState()
statedb.Update(vmenv.Gas)
return ret, vmenv.logs, vmenv.Gas, err
}
type Message struct {
from, to []byte
value, gas, price *big.Int
data []byte
}
func NewMessage(from, to, data []byte, value, gas, price *big.Int) Message {
return Message{from, to, value, gas, price, data}
}
func (self Message) Hash() []byte { return nil }
func (self Message) From() []byte { return self.from }
func (self Message) To() []byte { return self.to }
func (self Message) GasPrice() *big.Int { return self.price }
func (self Message) Gas() *big.Int { return self.gas }
func (self Message) Value() *big.Int { return self.value }
func (self Message) Nonce() uint64 { return 0 }
func (self Message) Data() []byte { return self.data }

26
tests/vm/gh_test.go
View File

@ -8,6 +8,7 @@ import (
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/tests/helper"
)
@ -76,11 +77,18 @@ func RunVmTest(p string, t *testing.T) {
tests := make(map[string]VmTest)
helper.CreateFileTests(t, p, &tests)
helper.Logger.SetLogLevel(5)
for name, test := range tests {
if name != "ABAcalls1" {
continue
}
statedb := state.New(helper.NewTrie())
for addr, account := range test.Pre {
obj := StateObjectFromAccount(addr, account)
statedb.SetStateObject(obj)
for a, v := range account.Storage {
obj.SetState(helper.FromHex(a), ethutil.NewValue(helper.FromHex(v)))
}
}
// XXX Yeah, yeah...
@ -129,6 +137,16 @@ func RunVmTest(p string, t *testing.T) {
for addr, account := range test.Post {
obj := statedb.GetStateObject(helper.FromHex(addr))
if obj == nil {
continue
}
if len(test.Exec) == 0 {
if obj.Balance().Cmp(ethutil.Big(account.Balance)) != 0 {
t.Errorf("%s's : (%x) balance failed. Expected %v, got %v => %v\n", name, obj.Address()[:4], account.Balance, obj.Balance(), new(big.Int).Sub(ethutil.Big(account.Balance), obj.Balance()))
}
}
for addr, value := range account.Storage {
v := obj.GetState(helper.FromHex(addr)).Bytes()
vexp := helper.FromHex(value)
@ -149,6 +167,7 @@ func RunVmTest(p string, t *testing.T) {
}
}
}
logger.Flush()
}
// I've created a new function for each tests so it's easier to identify where the problem lies if any of them fail.
@ -212,7 +231,12 @@ func TestStateRecursiveCreate(t *testing.T) {
RunVmTest(fn, t)
}
func TestStateSpecialTest(t *testing.T) {
func TestStateSpecial(t *testing.T) {
const fn = "../files/StateTests/stSpecialTest.json"
RunVmTest(fn, t)
}
func TestStateRefund(t *testing.T) {
const fn = "../files/StateTests/stRefundTest.json"
RunVmTest(fn, t)
}

2
vm/common.go
View File

@ -37,7 +37,7 @@ var (
GasLog = big.NewInt(32)
GasSha256 = big.NewInt(50)
GasRipemd = big.NewInt(50)
GasEcrecover = big.NewInt(100)
GasEcrecover = big.NewInt(500)
Pow256 = ethutil.BigPow(2, 256)

18
vm/vm_debug.go
View File

@ -2,6 +2,7 @@ package vm
import (
"fmt"
"math"
"math/big"
"github.com/ethereum/go-ethereum/crypto"
@ -112,7 +113,7 @@ func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *
return closure.Return(nil), nil
}
vmlogger.Debugf("(%d) %x gas: %v (d) %x\n", self.env.Depth(), closure.Address(), closure.Gas, callData)
vmlogger.Debugf("(%d) (%x) %x gas: %v (d) %x\n", self.env.Depth(), caller.Address()[:4], closure.Address(), closure.Gas, callData)
for {
prevStep = step
@ -185,11 +186,11 @@ func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *
// 0 => non 0
mult = ethutil.Big3
} else if val.BigInt().Cmp(ethutil.Big0) != 0 && len(y.Bytes()) == 0 {
statedb.Refund(closure.caller.Address(), GasSStoreRefund, closure.Price)
statedb.Refund(caller.Address(), GasSStoreRefund)
mult = ethutil.Big0
} else {
// non 0 => non 0
// non 0 => non 0 (or 0 => 0)
mult = ethutil.Big1
}
gas.Set(new(big.Int).Mul(mult, GasSStore))
@ -660,7 +661,7 @@ func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *
cOff = 0
l = 0
} else if cOff+l > size {
l = 0
l = uint64(math.Min(float64(cOff+l), float64(size)))
}
codeCopy := code[cOff : cOff+l]
@ -776,10 +777,7 @@ func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *
val, loc := stack.Popn()
statedb.SetState(closure.Address(), loc.Bytes(), val)
// Debug sessions are allowed to run without message
if closure.message != nil {
closure.message.AddStorageChange(loc.Bytes())
}
self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
case JUMP:
@ -898,10 +896,12 @@ func (self *DebugVm) Run(me, caller ClosureRef, code []byte, value, gas, price *
return closure.Return(ret), nil
case SUICIDE:
receiver := statedb.GetOrNewStateObject(stack.Pop().Bytes())
balance := statedb.GetBalance(closure.Address())
receiver.AddAmount(statedb.GetBalance(closure.Address()))
self.Printf(" => (%x) %v", receiver.Address()[:4], balance)
receiver.AddAmount(balance)
statedb.Delete(closure.Address())
fallthrough