Working on new (blocking) event machine.

The new event machine will be used for loose coupling and handle the
communications between the services:

1) Block pool finds blocks which "links" with our current canonical
chain
2) Posts the blocks on to the event machine
3) State manager receives blocks & processes them
4) Broadcasts new post block event

ethereum.go

@@ -22,6 +22,7 @@ import (
 	"github.com/ethereum/eth-go/ethstate"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/eth-go/ethwire"
+	"github.com/ethereum/eth-go/eventer"
 )
 
 const (
@@ -58,7 +59,9 @@ type Ethereum struct {
 	blockChain *ethchain.BlockChain
 	// The block pool
 	blockPool *BlockPool
-	// Peers (NYI)
+	// Eventer
+	eventer *eventer.EventMachine
+	// Peers
 	peers *list.List
 	// Nonce
 	Nonce uint64
@@ -123,6 +126,7 @@ func New(db ethutil.Database, clientIdentity ethwire.ClientIdentity, keyManager
 		filters:        make(map[int]*ethchain.Filter),
 	}
 	ethereum.reactor = ethreact.New()
+	ethereum.eventer = eventer.New()
 
 	ethereum.blockPool = NewBlockPool(ethereum)
 	ethereum.txPool = ethchain.NewTxPool(ethereum)
@@ -161,6 +165,9 @@ func (s *Ethereum) TxPool() *ethchain.TxPool {
 func (s *Ethereum) BlockPool() *BlockPool {
 	return s.blockPool
 }
+func (s *Ethereum) Eventer() *eventer.EventMachine {
+	return s.eventer
+}
 func (self *Ethereum) Db() ethutil.Database {
 	return self.db
 }
@@ -387,6 +394,8 @@ func (s *Ethereum) ReapDeadPeerHandler() {
 func (s *Ethereum) Start(seed bool) {
 	s.reactor.Start()
 	s.blockPool.Start()
+	s.stateManager.Start()
+
 	// Bind to addr and port
 	ln, err := net.Listen("tcp", ":"+s.Port)
 	if err != nil {