Merge ethereum/poc-9 into accounts-integration

Conflicts:
	cmd/utils/cmd.go
	cmd/utils/flags.go
	core/manager.go
	eth/backend.go
	rpc/http/server.go
	xeth/xeth.go

2 files changed, 8 insertions, 3 deletions

diff --git a/miner/miner.go b/miner/miner.go
index b95c65859..d3b1f578a 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -3,6 +3,7 @@ package miner
 import (
 	"math/big"
 
+	"github.com/ethereum/ethash"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/pow"
@@ -44,6 +45,8 @@ func (self *Miner) Mining() bool {
 func (self *Miner) Start() {
 	self.mining = true
 
+	self.pow.(*ethash.Ethash).UpdateDAG()
+
 	self.worker.start()
 
 	self.worker.commitNewWork()
@@ -53,6 +56,8 @@ func (self *Miner) Stop() {
 	self.mining = false
 
 	self.worker.stop()
+
+	//self.pow.(*ethash.Ethash).Stop()
 }
 
 func (self *Miner) HashRate() int64 {
diff --git a/miner/worker.go b/miner/worker.go
index 29992b327..21a0522e8 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -30,7 +30,7 @@ type environment struct {
 }
 
 func env(block *types.Block, eth core.Backend) *environment {
-	state := state.New(block.Root(), eth.Db())
+	state := state.New(block.Root(), eth.StateDb())
 	env := &environment{
 		totalUsedGas: new(big.Int),
 		state:        state,
@@ -116,7 +116,7 @@ func (self *worker) register(agent Agent) {
 }
 
 func (self *worker) update() {
-	events := self.mux.Subscribe(core.ChainEvent{}, core.NewMinedBlockEvent{})
+	events := self.mux.Subscribe(core.ChainHeadEvent{}, core.NewMinedBlockEvent{})
 
 	timer := time.NewTicker(2 * time.Second)
 
@@ -125,7 +125,7 @@ out:
 		select {
 		case event := <-events.Chan():
 			switch ev := event.(type) {
-			case core.ChainEvent:
+			case core.ChainHeadEvent:
 				if self.current.block != ev.Block {
 					self.commitNewWork()
 				}