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Closure call now returns the total usage as well

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* Return the used gas value based on the UseGas and ReturnGas
pull/150/head
obscuren 10 years ago
parent 1c01e9c095
commit 73761f7af6
4 changed files with 138 additions and 104 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 22
      ethchain/closure.go
  2. 38
      ethchain/state_manager.go
  3. 18
      ethchain/transaction_pool.go
  4. 164
      ethchain/vm.go

22
ethchain/closure.go
Unescape View File

@ -22,8 +22,7 @@ type Closure struct {
Script []byte
State *State
Gas *big.Int
Price *big.Int
Gas, UsedGas, Price *big.Int
Args []byte
}
@ -74,10 +73,12 @@ func (c *Closure) Address() []byte {
type DebugHook func(step int, op OpCode, mem *Memory, stack *Stack, stateObject *StateObject) bool
func (c *Closure) Call(vm *Vm, args []byte, hook DebugHook) ([]byte, error) {
func (c *Closure) Call(vm *Vm, args []byte, hook DebugHook) ([]byte, *big.Int, error) {
c.Args = args
return vm.RunClosure(c, hook)
ret, err := vm.RunClosure(c, hook)
return ret, c.UsedGas, err
}
func (c *Closure) Return(ret []byte) []byte {
@ -93,10 +94,23 @@ func (c *Closure) Return(ret []byte) []byte {
return ret
}
func (c *Closure) UseGas(gas *big.Int) bool {
if c.Gas.Cmp(gas) < 0 {
return false
}
// Sub the amount of gas from the remaining
c.Gas.Sub(c.Gas, gas)
c.UsedGas.Add(c.UsedGas, gas)
return true
}
// Implement the Callee interface
func (c *Closure) ReturnGas(gas, price *big.Int, state *State) {
// Return the gas to the closure
c.Gas.Add(c.Gas, gas)
c.UsedGas.Sub(c.UsedGas, gas)
}
func (c *Closure) Object() *StateObject {

38
ethchain/state_manager.go
Unescape View File

@ -106,7 +106,7 @@ func (sm *StateManager) ApplyTransactions(state *State, block *Block, txs []*Tra
usedGas, err := sm.ApplyTransaction(state, block, tx)
if err != nil {
ethutil.Config.Log.Infoln(err)
continue
//continue
}
accumelative := new(big.Int).Set(totalUsedGas.Add(totalUsedGas, usedGas))
@ -119,7 +119,7 @@ func (sm *StateManager) ApplyTransactions(state *State, block *Block, txs []*Tra
return receipts, txs
}
func (sm *StateManager) ApplyTransaction(state *State, block *Block, tx *Transaction) (*big.Int, error) {
func (sm *StateManager) ApplyTransaction(state *State, block *Block, tx *Transaction) (totalGasUsed *big.Int, err error) {
/*
Applies transactions to the given state and creates new
state objects where needed.
@ -129,9 +129,17 @@ func (sm *StateManager) ApplyTransaction(state *State, block *Block, tx *Transac
assume there's a return value. The return value will be set to
the script section of the state object.
*/
totalGasUsed := big.NewInt(0)
var (
addTotalGas = func(gas *big.Int) { totalGasUsed.Add(totalGasUsed, gas) }
gas = new(big.Int)
script []byte
)
totalGasUsed = big.NewInt(0)
// Apply the transaction to the current state
err := sm.Ethereum.TxPool().ProcessTransaction(tx, state, false)
gas, err = sm.Ethereum.TxPool().ProcessTransaction(tx, state, false)
addTotalGas(gas)
if tx.CreatesContract() {
if err == nil {
// Create a new state object and the transaction
@ -141,30 +149,32 @@ func (sm *StateManager) ApplyTransaction(state *State, block *Block, tx *Transac
// Evaluate the initialization script
// and use the return value as the
// script section for the state object.
script, err := sm.EvalScript(state, contract.Init(), contract, tx, block)
script, gas, err = sm.EvalScript(state, contract.Init(), contract, tx, block)
addTotalGas(gas)
if err != nil {
return nil, fmt.Errorf("[STATE] Error during init script run %v", err)
err = fmt.Errorf("[STATE] Error during init script run %v", err)
return
}
contract.script = script
state.UpdateStateObject(contract)
} else {
return nil, fmt.Errorf("[STATE] Unable to create contract")
err = fmt.Errorf("[STATE] Unable to create contract")
}
} else {
return nil, fmt.Errorf("[STATE] contract creation tx:", err)
err = fmt.Errorf("[STATE] contract creation tx: %v", err)
}
} else {
// Find the state object at the "recipient" address. If
// there's an object attempt to run the script.
stateObject := state.GetStateObject(tx.Recipient)
if err == nil && stateObject != nil && len(stateObject.Script()) > 0 {
sm.EvalScript(state, stateObject.Script(), stateObject, tx, block)
} else if err != nil {
return nil, fmt.Errorf("[STATE] process:", err)
_, gas, err = sm.EvalScript(state, stateObject.Script(), stateObject, tx, block)
addTotalGas(gas)
}
}
return totalGasUsed, nil
return
}
func (sm *StateManager) Process(block *Block, dontReact bool) error {
@ -349,7 +359,7 @@ func (sm *StateManager) Stop() {
sm.bc.Stop()
}
func (sm *StateManager) EvalScript(state *State, script []byte, object *StateObject, tx *Transaction, block *Block) (ret []byte, err error) {
func (sm *StateManager) EvalScript(state *State, script []byte, object *StateObject, tx *Transaction, block *Block) (ret []byte, gas *big.Int, err error) {
account := state.GetAccount(tx.Sender())
err = account.ConvertGas(tx.Gas, tx.GasPrice)
@ -369,7 +379,7 @@ func (sm *StateManager) EvalScript(state *State, script []byte, object *StateObj
Value: tx.Value,
//Price: tx.GasPrice,
})
ret, err = closure.Call(vm, tx.Data, nil)
ret, gas, err = closure.Call(vm, tx.Data, nil)
// Update the account (refunds)
state.UpdateStateObject(account)

18
ethchain/transaction_pool.go
Unescape View File

@ -91,28 +91,37 @@ func (pool *TxPool) addTransaction(tx *Transaction) {
// Process transaction validates the Tx and processes funds from the
// sender to the recipient.
func (pool *TxPool) ProcessTransaction(tx *Transaction, state *State, toContract bool) (err error) {
func (pool *TxPool) ProcessTransaction(tx *Transaction, state *State, toContract bool) (gas *big.Int, err error) {
defer func() {
if r := recover(); r != nil {
ethutil.Config.Log.Infoln(r)
err = fmt.Errorf("%v", r)
}
}()
gas = new(big.Int)
addGas := func(g *big.Int) { gas.Add(gas, g) }
// Get the sender
sender := state.GetAccount(tx.Sender())
if sender.Nonce != tx.Nonce {
return fmt.Errorf("[TXPL] Invalid account nonce, state nonce is %d transaction nonce is %d instead", sender.Nonce, tx.Nonce)
err = fmt.Errorf("[TXPL] Invalid account nonce, state nonce is %d transaction nonce is %d instead", sender.Nonce, tx.Nonce)
return
}
txTotalBytes := big.NewInt(int64(len(tx.Data)))
txTotalBytes.Div(txTotalBytes, ethutil.Big32)
addGas(new(big.Int).Mul(txTotalBytes, GasSStore))
// Make sure there's enough in the sender's account. Having insufficient
// funds won't invalidate this transaction but simple ignores it.
//totAmount := new(big.Int).Add(tx.Value, new(big.Int).Mul(TxFee, TxFeeRat))
totAmount := new(big.Int).Add(tx.Value, new(big.Int).Mul(tx.Gas, tx.GasPrice))
if sender.Amount.Cmp(totAmount) < 0 {
return fmt.Errorf("[TXPL] Insufficient amount in sender's (%x) account", tx.Sender())
err = fmt.Errorf("[TXPL] Insufficient amount in sender's (%x) account", tx.Sender())
return
}
//fmt.Println(tx)
// Get the receiver
receiver := state.GetAccount(tx.Recipient)
@ -120,6 +129,7 @@ func (pool *TxPool) ProcessTransaction(tx *Transaction, state *State, toContract
// Send Tx to self
if bytes.Compare(tx.Recipient, tx.Sender()) == 0 {
addGas(GasTx)
// Subtract the fee
sender.SubAmount(new(big.Int).Mul(GasTx, tx.GasPrice))
} else {

164
ethchain/vm.go
Unescape View File

@ -21,11 +21,10 @@ var (
GasTx = big.NewInt(500)
)
func CalculateTxGas(initSize, scriptSize *big.Int) *big.Int {
func CalculateTxGas(initSize *big.Int) *big.Int {
totalGas := new(big.Int)
totalGas.Add(totalGas, GasCreate)
txTotalBytes := new(big.Int).Add(initSize, scriptSize)
txTotalBytes := new(big.Int).Set(initSize)
txTotalBytes.Div(txTotalBytes, ethutil.Big32)
totalGas.Add(totalGas, new(big.Int).Mul(txTotalBytes, GasSStore))
@ -92,12 +91,14 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
pc := big.NewInt(0)
// Current step count
step := 0
prevStep := 0
if ethutil.Config.Debug {
ethutil.Config.Log.Debugf("# op\n")
}
for {
prevStep = step
// The base for all big integer arithmetic
base := new(big.Int)
@ -111,16 +112,16 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
}
gas := new(big.Int)
useGas := func(amount *big.Int) {
setStepGasUsage := func(amount *big.Int) {
gas.Add(gas, amount)
}
switch op {
case oSHA3:
useGas(GasSha)
case oSLOAD:
useGas(GasSLoad)
case oSSTORE:
case SHA3:
setStepGasUsage(GasSha)
case SLOAD:
setStepGasUsage(GasSLoad)
case SSTORE:
var mult *big.Int
y, x := stack.Peekn()
val := closure.GetMem(x)
@ -131,67 +132,64 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
} else {
mult = ethutil.Big1
}
useGas(new(big.Int).Mul(mult, GasSStore))
case oBALANCE:
useGas(GasBalance)
case oCREATE:
setStepGasUsage(new(big.Int).Mul(mult, GasSStore))
case BALANCE:
setStepGasUsage(GasBalance)
case CREATE:
require(3)
args := stack.Get(big.NewInt(3))
initSize := new(big.Int).Add(args[1], args[0])
useGas(CalculateTxGas(initSize, ethutil.Big0))
case oCALL:
useGas(GasCall)
case oMLOAD, oMSIZE, oMSTORE8, oMSTORE:
useGas(GasMemory)
setStepGasUsage(CalculateTxGas(initSize))
case CALL:
setStepGasUsage(GasCall)
case MLOAD, MSIZE, MSTORE8, MSTORE:
setStepGasUsage(GasMemory)
default:
useGas(GasStep)
setStepGasUsage(GasStep)
}
if closure.Gas.Cmp(gas) < 0 {
if !closure.UseGas(gas) {
ethutil.Config.Log.Debugln("Insufficient gas", closure.Gas, gas)
return closure.Return(nil), fmt.Errorf("insufficient gas %v %v", closure.Gas, gas)
}
// Sub the amount of gas from the remaining
closure.Gas.Sub(closure.Gas, gas)
switch op {
case oLOG:
case LOG:
stack.Print()
mem.Print()
// 0x20 range
case oADD:
case ADD:
require(2)
x, y := stack.Popn()
// (x + y) % 2 ** 256
base.Add(x, y)
// Pop result back on the stack
stack.Push(base)
case oSUB:
case SUB:
require(2)
x, y := stack.Popn()
// (x - y) % 2 ** 256
base.Sub(x, y)
// Pop result back on the stack
stack.Push(base)
case oMUL:
case MUL:
require(2)
x, y := stack.Popn()
// (x * y) % 2 ** 256
base.Mul(x, y)
// Pop result back on the stack
stack.Push(base)
case oDIV:
case DIV:
require(2)
x, y := stack.Popn()
// floor(x / y)
base.Div(x, y)
// Pop result back on the stack
stack.Push(base)
case oSDIV:
case SDIV:
require(2)
x, y := stack.Popn()
// n > 2**255
@ -208,12 +206,12 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
}
// Push result on to the stack
stack.Push(z)
case oMOD:
case MOD:
require(2)
x, y := stack.Popn()
base.Mod(x, y)
stack.Push(base)
case oSMOD:
case SMOD:
require(2)
x, y := stack.Popn()
// n > 2**255
@ -230,17 +228,17 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
}
// Push result on to the stack
stack.Push(z)
case oEXP:
case EXP:
require(2)
x, y := stack.Popn()
base.Exp(x, y, Pow256)
stack.Push(base)
case oNEG:
case NEG:
require(1)
base.Sub(Pow256, stack.Pop())
stack.Push(base)
case oLT:
case LT:
require(2)
x, y := stack.Popn()
// x < y
@ -249,7 +247,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
} else {
stack.Push(ethutil.BigFalse)
}
case oGT:
case GT:
require(2)
x, y := stack.Popn()
// x > y
@ -258,7 +256,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
} else {
stack.Push(ethutil.BigFalse)
}
case oEQ:
case EQ:
require(2)
x, y := stack.Popn()
// x == y
@ -267,7 +265,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
} else {
stack.Push(ethutil.BigFalse)
}
case oNOT:
case NOT:
require(1)
x := stack.Pop()
if x.Cmp(ethutil.BigFalse) == 0 {
@ -277,7 +275,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
}
// 0x10 range
case oAND:
case AND:
require(2)
x, y := stack.Popn()
if (x.Cmp(ethutil.BigTrue) >= 0) && (y.Cmp(ethutil.BigTrue) >= 0) {
@ -286,7 +284,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
stack.Push(ethutil.BigFalse)
}
case oOR:
case OR:
require(2)
x, y := stack.Popn()
if (x.Cmp(ethutil.BigInt0) >= 0) || (y.Cmp(ethutil.BigInt0) >= 0) {
@ -294,11 +292,11 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
} else {
stack.Push(ethutil.BigFalse)
}
case oXOR:
case XOR:
require(2)
x, y := stack.Popn()
stack.Push(base.Xor(x, y))
case oBYTE:
case BYTE:
require(2)
val, th := stack.Popn()
if th.Cmp(big.NewInt(32)) < 0 {
@ -308,92 +306,92 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
}
// 0x20 range
case oSHA3:
case SHA3:
require(2)
size, offset := stack.Popn()
data := mem.Get(offset.Int64(), size.Int64())
stack.Push(ethutil.BigD(data))
// 0x30 range
case oADDRESS:
case ADDRESS:
stack.Push(ethutil.BigD(closure.Object().Address()))
case oBALANCE:
case BALANCE:
stack.Push(closure.object.Amount)
case oORIGIN:
case ORIGIN:
stack.Push(ethutil.BigD(vm.vars.Origin))
case oCALLER:
case CALLER:
stack.Push(ethutil.BigD(closure.Callee().Address()))
case oCALLVALUE:
case CALLVALUE:
stack.Push(vm.vars.Value)
case oCALLDATALOAD:
case CALLDATALOAD:
require(1)
offset := stack.Pop().Int64()
val := closure.Args[offset : offset+32]
stack.Push(ethutil.BigD(val))
case oCALLDATASIZE:
case CALLDATASIZE:
stack.Push(big.NewInt(int64(len(closure.Args))))
case oGASPRICE:
case GASPRICE:
stack.Push(closure.Price)
// 0x40 range
case oPREVHASH:
case PREVHASH:
stack.Push(ethutil.BigD(vm.vars.PrevHash))
case oCOINBASE:
case COINBASE:
stack.Push(ethutil.BigD(vm.vars.Coinbase))
case oTIMESTAMP:
case TIMESTAMP:
stack.Push(big.NewInt(vm.vars.Time))
case oNUMBER:
case NUMBER:
stack.Push(big.NewInt(int64(vm.vars.BlockNumber)))
case oDIFFICULTY:
case DIFFICULTY:
stack.Push(vm.vars.Diff)
case oGASLIMIT:
case GASLIMIT:
// TODO
stack.Push(big.NewInt(0))
// 0x50 range
case oPUSH1, oPUSH2, oPUSH3, oPUSH4, oPUSH5, oPUSH6, oPUSH7, oPUSH8, oPUSH9, oPUSH10, oPUSH11, oPUSH12, oPUSH13, oPUSH14, oPUSH15, oPUSH16, oPUSH17, oPUSH18, oPUSH19, oPUSH20, oPUSH21, oPUSH22, oPUSH23, oPUSH24, oPUSH25, oPUSH26, oPUSH27, oPUSH28, oPUSH29, oPUSH30, oPUSH31, oPUSH32:
a := big.NewInt(int64(op) - int64(oPUSH1) + 1)
case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
a := big.NewInt(int64(op) - int64(PUSH1) + 1)
pc.Add(pc, ethutil.Big1)
data := closure.Gets(pc, a)
val := ethutil.BigD(data.Bytes())
// Push value to stack
stack.Push(val)
pc.Add(pc, a.Sub(a, big.NewInt(1)))
step++
case oPOP:
step += int(op) - int(PUSH1) + 1
case POP:
require(1)
stack.Pop()
case oDUP:
case DUP:
require(1)
stack.Push(stack.Peek())
case oSWAP:
case SWAP:
require(2)
x, y := stack.Popn()
stack.Push(y)
stack.Push(x)
case oMLOAD:
case MLOAD:
require(1)
offset := stack.Pop()
stack.Push(ethutil.BigD(mem.Get(offset.Int64(), 32)))
case oMSTORE: // Store the value at stack top-1 in to memory at location stack top
case MSTORE: // Store the value at stack top-1 in to memory at location stack top
require(2)
// Pop value of the stack
val, mStart := stack.Popn()
mem.Set(mStart.Int64(), 32, ethutil.BigToBytes(val, 256))
case oMSTORE8:
case MSTORE8:
require(2)
val, mStart := stack.Popn()
base.And(val, new(big.Int).SetInt64(0xff))
mem.Set(mStart.Int64(), 32, ethutil.BigToBytes(base, 256))
case oSLOAD:
case SLOAD:
require(1)
loc := stack.Pop()
val := closure.GetMem(loc)
//fmt.Println("get", val.BigInt(), "@", loc)
stack.Push(val.BigInt())
case oSSTORE:
case SSTORE:
require(2)
val, loc := stack.Popn()
//fmt.Println("storing", val, "@", loc)
@ -401,13 +399,13 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
// Add the change to manifest
vm.state.manifest.AddStorageChange(closure.Object(), loc.Bytes(), val)
case oJUMP:
case JUMP:
require(1)
pc = stack.Pop()
// Reduce pc by one because of the increment that's at the end of this for loop
//pc.Sub(pc, ethutil.Big1)
continue
case oJUMPI:
case JUMPI:
require(2)
cond, pos := stack.Popn()
if cond.Cmp(ethutil.BigTrue) == 0 {
@ -415,12 +413,12 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
//pc.Sub(pc, ethutil.Big1)
continue
}
case oPC:
case PC:
stack.Push(pc)
case oMSIZE:
case MSIZE:
stack.Push(big.NewInt(int64(mem.Len())))
// 0x60 range
case oCREATE:
case CREATE:
require(3)
value := stack.Pop()
@ -439,9 +437,10 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
// Transfer all remaining gas to the new
// contract so it may run the init script
gas := new(big.Int).Set(closure.Gas)
closure.Gas.Sub(closure.Gas, gas)
closure.UseGas(gas)
// Create the closure
closure := NewClosure(closure.callee,
c := NewClosure(closure.callee,
closure.Object(),
contract.initScript,
vm.state,
@ -449,7 +448,8 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
closure.Price)
// Call the closure and set the return value as
// main script.
closure.Script, err = closure.Call(vm, nil, hook)
c.Script, _, err = c.Call(vm, nil, hook)
if err != nil {
stack.Push(ethutil.BigFalse)
@ -460,7 +460,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
vm.state.UpdateStateObject(contract)
}
case oCALL:
case CALL:
require(7)
// Closure addr
addr := stack.Pop()
@ -492,7 +492,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
// Copy
gas = new(big.Int).Set(closure.Gas)
}
closure.Gas.Sub(closure.Gas, gas)
closure.UseGas(gas)
// Add the value to the state object
contract.AddAmount(value)
@ -500,7 +500,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
// Create a new callable closure
closure := NewClosure(closure.Object(), contract, contract.script, vm.state, gas, closure.Price)
// Executer the closure and get the return value (if any)
ret, err := closure.Call(vm, args, hook)
ret, _, err := closure.Call(vm, args, hook)
if err != nil {
stack.Push(ethutil.BigFalse)
// Reset the changes applied this object
@ -516,13 +516,13 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
ethutil.Config.Log.Debugf("Contract %x not found\n", addr.Bytes())
stack.Push(ethutil.BigFalse)
}
case oRETURN:
case RETURN:
require(2)
size, offset := stack.Popn()
ret := mem.Get(offset.Int64(), size.Int64())
return closure.Return(ret), nil
case oSUICIDE:
case SUICIDE:
require(1)
receiver := vm.state.GetAccount(stack.Pop().Bytes())
@ -532,7 +532,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
closure.object.state.Purge()
fallthrough
case oSTOP: // Stop the closure
case STOP: // Stop the closure
return closure.Return(nil), nil
default:
ethutil.Config.Log.Debugf("Invalid opcode %x\n", op)
@ -543,7 +543,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
pc.Add(pc, ethutil.Big1)
if hook != nil {
if !hook(step-1, op, mem, stack, closure.Object()) {
if !hook(prevStep, op, mem, stack, closure.Object()) {
return nil, nil
}
}

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