Changed miner

* Instead of delivering `Work` to the `Worker`, push a complete Block to
  the `Worker` so that each agent can work on their own block.

miner/agent.go

 package miner
 
 import (
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/pow"
 )
@@ -9,7 +10,7 @@ type CpuMiner struct {
 	c             chan *types.Block
 	quit          chan struct{}
 	quitCurrentOp chan struct{}
-	returnCh      chan<- Work
+	returnCh      chan<- *types.Block
 
 	index int
 	pow   pow.PoW
@@ -26,7 +27,7 @@ func NewCpuMiner(index int, pow pow.PoW) *CpuMiner {
 
 func (self *CpuMiner) Work() chan<- *types.Block          { return self.c }
 func (self *CpuMiner) Pow() pow.PoW                       { return self.pow }
-func (self *CpuMiner) SetWorkCh(ch chan<- Work)  { self.returnCh = ch }
+func (self *CpuMiner) SetReturnCh(ch chan<- *types.Block) { self.returnCh = ch }
 
 func (self *CpuMiner) Stop() {
 	close(self.quit)
@@ -74,9 +75,12 @@ done:
 
 func (self *CpuMiner) mine(block *types.Block) {
 	minerlogger.Infof("(re)started agent[%d]. mining...\n", self.index)
-	nonce, mixDigest, seedHash := self.pow.Search(block, self.quitCurrentOp)
+	nonce, mixDigest, _ := self.pow.Search(block, self.quitCurrentOp)
 	if nonce != 0 {
-		self.returnCh <- Work{block.Number().Uint64(), nonce, mixDigest, seedHash}
+		block.SetNonce(nonce)
+		block.Header().MixDigest = common.BytesToHash(mixDigest)
+		self.returnCh <- block
+		//self.returnCh <- Work{block.Number().Uint64(), nonce, mixDigest, seedHash}
 	}
 }
 

miner/miner.go

@@ -26,7 +26,11 @@ type Miner struct {
 func New(eth core.Backend, pow pow.PoW, minerThreads int) *Miner {
 	// note: minerThreads is currently ignored because
 	// ethash is not thread safe.
-	return &Miner{eth: eth, pow: pow, worker: newWorker(common.Address{}, eth)}
+	miner := &Miner{eth: eth, pow: pow, worker: newWorker(common.Address{}, eth)}
+	for i := 0; i < minerThreads; i++ {
+		miner.worker.register(NewCpuMiner(i, pow))
+	}
+	return miner
 }
 
 func (self *Miner) Mining() bool {
@@ -36,7 +40,6 @@ func (self *Miner) Mining() bool {
 func (self *Miner) Start(coinbase common.Address) {
 	self.mining = true
 	self.worker.coinbase = coinbase
-	self.worker.register(NewCpuMiner(0, self.pow))
 
 	self.pow.(*ethash.Ethash).UpdateDAG()
 

miner/remote_agent.go

@@ -12,7 +12,7 @@ type RemoteAgent struct {
 
 	quit     chan struct{}
 	workCh   chan *types.Block
-	returnCh chan<- Work
+	returnCh chan<- *types.Block
 }
 
 func NewRemoteAgent() *RemoteAgent {
@@ -25,7 +25,7 @@ func (a *RemoteAgent) Work() chan<- *types.Block {
 	return a.workCh
 }
 
-func (a *RemoteAgent) SetWorkCh(returnCh chan<- Work) {
+func (a *RemoteAgent) SetReturnCh(returnCh chan<- *types.Block) {
 	a.returnCh = returnCh
 }
 
@@ -72,8 +72,11 @@ func (a *RemoteAgent) SubmitWork(nonce uint64, mixDigest, seedHash common.Hash)
 	// Return true or false, but does not indicate if the PoW was correct
 
 	// Make sure the external miner was working on the right hash
-	if a.currentWork != nil && a.work != nil && a.currentWork.Hash() == a.work.Hash() {
-		a.returnCh <- Work{a.currentWork.Number().Uint64(), nonce, mixDigest.Bytes(), seedHash.Bytes()}
+	if a.currentWork != nil && a.work != nil {
+		a.currentWork.SetNonce(nonce)
+		a.currentWork.Header().MixDigest = mixDigest
+		a.returnCh <- a.currentWork
+		//a.returnCh <- Work{a.currentWork.Number().Uint64(), nonce, mixDigest.Bytes(), seedHash.Bytes()}
 		return true
 	}
 

miner/worker.go

@@ -51,7 +51,7 @@ type Work struct {
 
 type Agent interface {
 	Work() chan<- *types.Block
-	SetWorkCh(chan<- Work)
+	SetReturnCh(chan<- *types.Block)
 	Stop()
 	Start()
 	GetHashRate() int64
@@ -60,7 +60,7 @@ type Agent interface {
 type worker struct {
 	mu     sync.Mutex
 	agents []Agent
-	recv   chan Work
+	recv   chan *types.Block
 	mux    *event.TypeMux
 	quit   chan struct{}
 	pow    pow.PoW
@@ -82,7 +82,7 @@ func newWorker(coinbase common.Address, eth core.Backend) *worker {
 	return &worker{
 		eth:            eth,
 		mux:            eth.EventMux(),
-		recv:           make(chan Work),
+		recv:           make(chan *types.Block),
 		chain:          eth.ChainManager(),
 		proc:           eth.BlockProcessor(),
 		possibleUncles: make(map[common.Hash]*types.Block),
@@ -112,7 +112,7 @@ func (self *worker) stop() {
 
 func (self *worker) register(agent Agent) {
 	self.agents = append(self.agents, agent)
-	agent.SetWorkCh(self.recv)
+	agent.SetReturnCh(self.recv)
 }
 
 func (self *worker) update() {
@@ -155,12 +155,12 @@ func (self *worker) addUncle(uncle *types.Block) {
 
 func (self *worker) wait() {
 	for {
-		for work := range self.recv {
+		for block := range self.recv {
 			// Someone Successfully Mined!
-			block := self.current.block
-			if block.Number().Uint64() == work.Number && block.Nonce() == 0 {
-				self.current.block.SetNonce(work.Nonce)
-				self.current.block.Header().MixDigest = common.BytesToHash(work.MixDigest)
+			//block := self.current.block
+			//if block.Number().Uint64() == work.Number && block.Nonce() == 0 {
+			//self.current.block.SetNonce(work.Nonce)
+			//self.current.block.Header().MixDigest = common.BytesToHash(work.MixDigest)
 
 			jsonlogger.LogJson(&logger.EthMinerNewBlock{
 				BlockHash:     block.Hash().Hex(),
@@ -169,16 +169,16 @@ func (self *worker) wait() {
 				BlockPrevHash: block.ParentHeaderHash.Hex(),
 			})
 
-				if err := self.chain.InsertChain(types.Blocks{self.current.block}); err == nil {
-					for _, uncle := range self.current.block.Uncles() {
+			if err := self.chain.InsertChain(types.Blocks{block}); err == nil {
+				for _, uncle := range block.Uncles() {
 					delete(self.possibleUncles, uncle.Hash())
 				}
 
-					self.mux.Post(core.NewMinedBlockEvent{self.current.block})
+				self.mux.Post(core.NewMinedBlockEvent{block})
 			} else {
 				self.commitNewWork()
 			}
-			}
+			//}
 			break
 		}
 	}
@@ -191,7 +191,7 @@ func (self *worker) push() {
 
 		// push new work to agents
 		for _, agent := range self.agents {
-			agent.Work() <- self.current.block
+			agent.Work() <- self.current.block.Copy()
 		}
 	}
 }