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Changed prev_hash to block_hash, state transition now uses vm env

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* PREVHASH => BLOCKHASH( N )
* State transition object uses VMEnv as it's query interface
* Updated vm.Enviroment has GetHash( n ) for BLOCKHASH instruction
* Added GetHash to xeth, core, utils & test environments
poc8
obscuren 10 years ago
parent 16f417f5af
commit ca1b2a1a91
13 changed files with 91 additions and 57 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. 2
      cmd/mist/debugger.go
  2. 12
      cmd/utils/vm_env.go
  3. 12
      core/block_manager.go
  4. 16
      core/chain_manager.go
  5. 41
      core/state_transition.go
  6. 13
      core/vm_env.go
  7. 6
      state/manifest.go
  8. 7
      tests/helper/vm.go
  9. 3
      vm/environment.go
  10. 4
      vm/types.go
  11. 19
      vm/vm_debug.go
  12. 2
      xeth/pipe.go
  13. 11
      xeth/vm_env.go

2
cmd/mist/debugger.go
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@ -151,7 +151,7 @@ func (self *DebuggerWindow) Debug(valueStr, gasStr, gasPriceStr, scriptStr, data
block := self.lib.eth.ChainManager().CurrentBlock()
env := utils.NewEnv(statedb, block, account.Address(), value)
env := utils.NewEnv(self.lib.eth.ChainManager(), statedb, block, account.Address(), value)
self.Logf("callsize %d", len(script))
go func() {

12
cmd/utils/vm_env.go
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@ -10,6 +10,7 @@ import (
)
type VMEnv struct {
chain *core.ChainManager
state *state.StateDB
block *types.Block
@ -20,8 +21,9 @@ type VMEnv struct {
Gas *big.Int
}
func NewEnv(state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv {
func NewEnv(chain *core.ChainManager, state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv {
return &VMEnv{
chain: chain,
state: state,
block: block,
transactor: transactor,
@ -35,12 +37,18 @@ func (self *VMEnv) PrevHash() []byte { return self.block.ParentHash() }
func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase() }
func (self *VMEnv) Time() int64 { return self.block.Time() }
func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty() }
func (self *VMEnv) BlockHash() []byte { return self.block.Hash() }
func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit() }
func (self *VMEnv) Value() *big.Int { return self.value }
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Depth() int { return self.depth }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) GetHash(n uint64) []byte {
if block := self.chain.GetBlockByNumber(n); block != nil {
return block.Hash()
}
return nil
}
func (self *VMEnv) AddLog(log state.Log) {
self.state.AddLog(log)
}

12
core/block_manager.go
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@ -113,7 +113,7 @@ done:
txGas := new(big.Int).Set(tx.Gas())
cb := state.GetStateObject(coinbase.Address())
st := NewStateTransition(cb, tx, state, block)
st := NewStateTransition(NewEnv(state, self.bc, tx, block), tx, cb)
_, err = st.TransitionState()
if err != nil {
switch {
@ -232,6 +232,8 @@ func (sm *BlockManager) ProcessWithParent(block, parent *types.Block) (td *big.I
// Sync the current block's state to the database and cancelling out the deferred Undo
state.Sync()
state.Manifest().SetHash(block.Hash())
messages := state.Manifest().Messages
state.Manifest().Reset()
@ -339,10 +341,10 @@ func (sm *BlockManager) AccumelateRewards(statedb *state.StateDB, block, parent
account.AddAmount(reward)
statedb.Manifest().AddMessage(&state.Message{
To: block.Header().Coinbase,
Input: nil,
Origin: nil,
Block: block.Hash(), Timestamp: int64(block.Header().Time), Coinbase: block.Header().Coinbase, Number: block.Header().Number,
To: block.Header().Coinbase,
Input: nil,
Origin: nil,
Timestamp: int64(block.Header().Time), Coinbase: block.Header().Coinbase, Number: block.Header().Number,
Value: new(big.Int).Add(reward, block.Reward),
})

16
core/chain_manager.go
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@ -271,15 +271,15 @@ func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
block := self.currentBlock
for ; block != nil; block = self.GetBlock(block.Header().ParentHash) {
if block.Header().Number.Uint64() == num {
break
}
}
var block *types.Block
if block != nil && block.Header().Number.Uint64() == 0 && num != 0 {
return nil
if num <= self.currentBlock.Number().Uint64() {
block = self.currentBlock
for ; block != nil; block = self.GetBlock(block.Header().ParentHash) {
if block.Header().Number.Uint64() == num {
break
}
}
}
return block

41
core/state_transition.go
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@ -4,7 +4,6 @@ import (
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/state"
@ -28,18 +27,17 @@ import (
* 6) Derive new state root
*/
type StateTransition struct {
coinbase, receiver []byte
msg Message
gas, gasPrice *big.Int
initialGas *big.Int
value *big.Int
data []byte
state *state.StateDB
block *types.Block
coinbase []byte
msg Message
gas, gasPrice *big.Int
initialGas *big.Int
value *big.Int
data []byte
state *state.StateDB
cb, rec, sen *state.StateObject
Env vm.Environment
env vm.Environment
}
type Message interface {
@ -69,16 +67,19 @@ 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()), new(big.Int), msg.Value(), msg.Data(), state, block, coinbase, nil, nil, nil}
}
func (self *StateTransition) VmEnv() vm.Environment {
if self.Env == nil {
self.Env = NewEnv(self.state, self.msg, self.block)
func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateObject) *StateTransition {
return &StateTransition{
coinbase: coinbase.Address(),
env: env,
msg: msg,
gas: new(big.Int),
gasPrice: new(big.Int).Set(msg.GasPrice()),
initialGas: new(big.Int),
value: msg.Value(),
data: msg.Data(),
state: env.State(),
cb: coinbase,
}
return self.Env
}
func (self *StateTransition) Coinbase() *state.StateObject {
@ -183,7 +184,7 @@ func (self *StateTransition) TransitionState() (ret []byte, err error) {
return
}
vmenv := self.VmEnv()
vmenv := self.env
var ref vm.ContextRef
if MessageCreatesContract(msg) {
contract := MakeContract(msg, self.state)

13
core/vm_env.go
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@ -13,10 +13,12 @@ type VMEnv struct {
block *types.Block
msg Message
depth int
chain *ChainManager
}
func NewEnv(state *state.StateDB, msg Message, block *types.Block) *VMEnv {
func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, block *types.Block) *VMEnv {
return &VMEnv{
chain: chain,
state: state,
block: block,
msg: msg,
@ -25,16 +27,21 @@ func NewEnv(state *state.StateDB, msg Message, block *types.Block) *VMEnv {
func (self *VMEnv) Origin() []byte { return self.msg.From() }
func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number() }
func (self *VMEnv) PrevHash() []byte { return self.block.ParentHash() }
func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase() }
func (self *VMEnv) Time() int64 { return self.block.Time() }
func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty() }
func (self *VMEnv) BlockHash() []byte { return self.block.Hash() }
func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit() }
func (self *VMEnv) Value() *big.Int { return self.msg.Value() }
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Depth() int { return self.depth }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) GetHash(n uint64) []byte {
if block := self.chain.GetBlockByNumber(n); block != nil {
return block.Hash()
}
return nil
}
func (self *VMEnv) AddLog(log state.Log) {
self.state.AddLog(log)
}

6
state/manifest.go
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@ -30,6 +30,12 @@ func (self *Manifest) AddMessage(msg *Message) *Message {
return msg
}
func (self *Manifest) SetHash(hash []byte) {
for _, message := range self.Messages {
message.Block = hash
}
}
type Messages []*Message
type Message struct {
To, From []byte

7
tests/helper/vm.go
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@ -55,9 +55,11 @@ func (self *Env) PrevHash() []byte { return self.parent }
func (self *Env) Coinbase() []byte { return self.coinbase }
func (self *Env) Time() int64 { return self.time }
func (self *Env) Difficulty() *big.Int { return self.difficulty }
func (self *Env) BlockHash() []byte { return nil }
func (self *Env) State() *state.StateDB { return self.state }
func (self *Env) GasLimit() *big.Int { return self.gasLimit }
func (self *Env) GetHash(n uint64) []byte {
return nil
}
func (self *Env) AddLog(log state.Log) {
self.logs = append(self.logs, log)
}
@ -126,10 +128,9 @@ func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.
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)
st := core.NewStateTransition(vmenv, message, coinbase)
vmenv.origin = keyPair.Address()
st.Env = vmenv
ret, err := st.TransitionState()
statedb.Update(vmenv.Gas)

3
vm/environment.go
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@ -14,11 +14,10 @@ type Environment interface {
Origin() []byte
BlockNumber() *big.Int
PrevHash() []byte
GetHash(n uint64) []byte
Coinbase() []byte
Time() int64
Difficulty() *big.Int
BlockHash() []byte
GasLimit() *big.Int
Transfer(from, to Account, amount *big.Int) error
AddLog(state.Log)

4
vm/types.go
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@ -59,7 +59,7 @@ const (
const (
// 0x40 range - block operations
PREVHASH OpCode = 0x40 + iota
BLOCKHASH OpCode = 0x40 + iota
COINBASE
TIMESTAMP
NUMBER
@ -216,7 +216,7 @@ var opCodeToString = map[OpCode]string{
GASPRICE: "TXGASPRICE",
// 0x40 range - block operations
PREVHASH: "PREVHASH",
BLOCKHASH: "BLOCKHASH",
COINBASE: "COINBASE",
TIMESTAMP: "TIMESTAMP",
NUMBER: "NUMBER",

19
vm/vm_debug.go
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@ -42,9 +42,9 @@ func (self *DebugVm) Run(me, caller ContextRef, code []byte, value, gas, price *
msg := self.env.State().Manifest().AddMessage(&state.Message{
To: me.Address(), From: caller.Address(),
Input: callData,
Origin: self.env.Origin(),
Block: self.env.BlockHash(), Timestamp: self.env.Time(), Coinbase: self.env.Coinbase(), Number: self.env.BlockNumber(),
Input: callData,
Origin: self.env.Origin(),
Timestamp: self.env.Time(), Coinbase: self.env.Coinbase(), Number: self.env.BlockNumber(),
Value: value,
})
context := NewContext(msg, caller, me, code, gas, price)
@ -516,12 +516,15 @@ func (self *DebugVm) Run(me, caller ContextRef, code []byte, value, gas, price *
self.Printf(" => %v", context.Price)
// 0x40 range
case PREVHASH:
prevHash := self.env.PrevHash()
stack.Push(ethutil.BigD(prevHash))
case BLOCKHASH:
num := stack.Pop()
if num.Cmp(new(big.Int).Sub(self.env.BlockNumber(), ethutil.Big256)) < 0 {
stack.Push(ethutil.Big0)
} else {
stack.Push(ethutil.BigD(self.env.GetHash(num.Uint64())))
}
self.Printf(" => 0x%x", prevHash)
self.Printf(" => 0x%x", stack.Peek().Bytes())
case COINBASE:
coinbase := self.env.Coinbase()

2
xeth/pipe.go
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@ -87,7 +87,7 @@ func (self *XEth) ExecuteObject(object *Object, data []byte, value, gas, price *
self.Vm.State = self.World().State().Copy()
vmenv := NewEnv(self.Vm.State, block, value.BigInt(), initiator.Address())
vmenv := NewEnv(self.chainManager, self.Vm.State, block, value.BigInt(), initiator.Address())
return vmenv.Call(initiator, object.Address(), data, gas.BigInt(), price.BigInt(), value.BigInt())
}

11
xeth/vm_env.go
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@ -10,6 +10,7 @@ import (
)
type VMEnv struct {
chain *core.ChainManager
state *state.StateDB
block *types.Block
value *big.Int
@ -18,7 +19,7 @@ type VMEnv struct {
depth int
}
func NewEnv(state *state.StateDB, block *types.Block, value *big.Int, sender []byte) *VMEnv {
func NewEnv(chain *core.ChainManager, state *state.StateDB, block *types.Block, value *big.Int, sender []byte) *VMEnv {
return &VMEnv{
state: state,
block: block,
@ -33,12 +34,18 @@ func (self *VMEnv) PrevHash() []byte { return self.block.ParentHash() }
func (self *VMEnv) Coinbase() []byte { return self.block.Coinbase() }
func (self *VMEnv) Time() int64 { return self.block.Time() }
func (self *VMEnv) Difficulty() *big.Int { return self.block.Difficulty() }
func (self *VMEnv) BlockHash() []byte { return self.block.Hash() }
func (self *VMEnv) GasLimit() *big.Int { return self.block.GasLimit() }
func (self *VMEnv) Value() *big.Int { return self.value }
func (self *VMEnv) State() *state.StateDB { return self.state }
func (self *VMEnv) Depth() int { return self.depth }
func (self *VMEnv) SetDepth(i int) { self.depth = i }
func (self *VMEnv) GetHash(n uint64) []byte {
if block := self.chain.GetBlockByNumber(n); block != nil {
return block.Hash()
}
return nil
}
func (self *VMEnv) AddLog(log state.Log) {
self.state.AddLog(log)
}

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