Auto update state changes notifications

ethchain/closure.go

@@ -11,7 +11,7 @@ type ClosureRef interface {
 	ReturnGas(*big.Int, *big.Int, *State)
 	Address() []byte
 	GetMem(*big.Int) *ethutil.Value
-	SetMem(*big.Int, *ethutil.Value)
+	SetStore(*big.Int, *ethutil.Value)
 	N() *big.Int
 }
 
@@ -64,8 +64,8 @@ func (c *Closure) Gets(x, y *big.Int) *ethutil.Value {
 	return ethutil.NewValue(partial)
 }
 
-func (c *Closure) SetMem(x *big.Int, val *ethutil.Value) {
-	c.object.SetMem(x, val)
+func (c *Closure) SetStorage(x *big.Int, val *ethutil.Value) {
+	c.object.SetStorage(x, val)
 }
 
 func (c *Closure) Address() []byte {

ethchain/state.go

@@ -15,11 +15,13 @@ type State struct {
 	trie *ethutil.Trie
 	// Nested states
 	states map[string]*State
+
+	manifest *Manifest
 }
 
 // Create a new state from a given trie
 func NewState(trie *ethutil.Trie) *State {
-	return &State{trie: trie, states: make(map[string]*State)}
+	return &State{trie: trie, states: make(map[string]*State), manifest: NewManifest()}
 }
 
 // Resets the trie and all siblings
@@ -124,36 +126,6 @@ const (
 	UnknownTy
 )
 
-/*
-// Returns the object stored at key and the type stored at key
-// Returns nil if nothing is stored
-func (s *State) GetStateObject(key []byte) (*ethutil.Value, ObjType) {
-	// Fetch data from the trie
-	data := s.trie.Get(string(key))
-	// Returns the nil type, indicating nothing could be retrieved.
-	// Anything using this function should check for this ret val
-	if data == "" {
-		return nil, NilTy
-	}
-
-	var typ ObjType
-	val := ethutil.NewValueFromBytes([]byte(data))
-	// Check the length of the retrieved value.
-	// Len 2 = Account
-	// Len 3 = Contract
-	// Other = invalid for now. If other types emerge, add them here
-	if val.Len() == 2 {
-		typ = AccountTy
-	} else if val.Len() == 3 {
-		typ = ContractTy
-	} else {
-		typ = UnknownTy
-	}
-
-	return val, typ
-}
-*/
-
 // Updates any given state object
 func (s *State) UpdateStateObject(object *StateObject) {
 	addr := object.Address()
@@ -163,6 +135,7 @@ func (s *State) UpdateStateObject(object *StateObject) {
 	}
 
 	s.trie.Update(string(addr), string(object.RlpEncode()))
+	s.manifest.AddObjectChange(object)
 }
 
 func (s *State) Put(key, object []byte) {

ethchain/state_manager.go

@@ -47,7 +47,9 @@ type StateManager struct {
 	// the main states.
 	transState *State
 	// Manifest for keeping changes regarding state objects. See `notify`
-	manifest *Manifest
+	// XXX Should we move the manifest to the State object. Benefit:
+	// * All states can keep their own local changes
+	//manifest *Manifest
 }
 
 func NewStateManager(ethereum EthManager) *StateManager {
@@ -57,7 +59,7 @@ func NewStateManager(ethereum EthManager) *StateManager {
 		Pow:      &EasyPow{},
 		Ethereum: ethereum,
 		bc:       ethereum.BlockChain(),
-		manifest: NewManifest(),
+		//manifest: NewManifest(),
 	}
 	sm.procState = ethereum.BlockChain().CurrentBlock.State()
 	sm.transState = sm.procState.Copy()
@@ -190,7 +192,7 @@ func (sm *StateManager) ProcessBlock(block *Block, dontReact bool) error {
 
 			sm.notifyChanges()
 
-			sm.manifest.Reset()
+			sm.procState.manifest.Reset()
 		}
 	} else {
 		fmt.Println("total diff failed")
@@ -315,18 +317,15 @@ func (sm *StateManager) EvalScript(script []byte, object *StateObject, tx *Trans
 
 	// Update the account (refunds)
 	sm.procState.UpdateStateObject(account)
-	sm.manifest.AddObjectChange(account)
-
 	sm.procState.UpdateStateObject(object)
-	sm.manifest.AddObjectChange(object)
 }
 
 func (sm *StateManager) notifyChanges() {
-	for addr, stateObject := range sm.manifest.objectChanges {
+	for addr, stateObject := range sm.procState.manifest.objectChanges {
 		sm.Ethereum.Reactor().Post("object:"+addr, stateObject)
 	}
 
-	for stateObjectAddr, mappedObjects := range sm.manifest.storageChanges {
+	for stateObjectAddr, mappedObjects := range sm.procState.manifest.storageChanges {
 		for addr, value := range mappedObjects {
 			sm.Ethereum.Reactor().Post("storage:"+stateObjectAddr+":"+addr, &StorageState{[]byte(stateObjectAddr), []byte(addr), value})
 		}

ethchain/state_object.go

@@ -77,7 +77,7 @@ func (c *StateObject) SetAddr(addr []byte, value interface{}) {
 	c.state.trie.Update(string(addr), string(ethutil.NewValue(value).Encode()))
 }
 
-func (c *StateObject) SetMem(num *big.Int, val *ethutil.Value) {
+func (c *StateObject) SetStorage(num *big.Int, val *ethutil.Value) {
 	addr := ethutil.BigToBytes(num, 256)
 	c.SetAddr(addr, val)
 }

ethchain/vm.go

@@ -395,10 +395,10 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 		case oSSTORE:
 			require(2)
 			val, loc := stack.Popn()
-			closure.SetMem(loc, ethutil.NewValue(val))
+			closure.SetStorage(loc, ethutil.NewValue(val))
 
 			// Add the change to manifest
-			vm.stateManager.manifest.AddStorageChange(closure.Object(), loc.Bytes(), val)
+			vm.state.manifest.AddStorageChange(closure.Object(), loc.Bytes(), val)
 		case oJUMP:
 			require(1)
 			pc = stack.Pop()
@@ -473,7 +473,6 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 
 			// Fetch the contract which will serve as the closure body
 			contract := vm.state.GetContract(addr.Bytes())
-			fmt.Println("before", contract.Amount)
 
 			if contract != nil {
 				// Prepay for the gas
@@ -497,12 +496,9 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 					//contract.State().Reset()
 				} else {
 					stack.Push(ethutil.BigTrue)
-					// Notify of the changes
-					vm.stateManager.manifest.AddObjectChange(contract)
 				}
 
 				vm.state.SetStateObject(contract)
-				fmt.Println("after", contract.Amount)
 
 				mem.Set(retOffset.Int64(), retSize.Int64(), ret)
 			} else {
@@ -520,8 +516,7 @@ func (vm *Vm) RunClosure(closure *Closure, hook DebugHook) (ret []byte, err erro
 
 			receiver := vm.state.GetAccount(stack.Pop().Bytes())
 			receiver.AddAmount(closure.object.Amount)
-
-			vm.stateManager.manifest.AddObjectChange(receiver)
+			vm.state.SetStateObject(receiver)
 
 			closure.object.state.Purge()