miner: smart mining
Work is now handled and carried over multiple sessions. Previously one session only was assumed, potentially resulting in invalid (outdated) work * Larger work / result queue * Full validation option
This commit is contained in:
Jeffrey Wilcke
134
miner/worker.go
134
miner/worker.go
@ -38,25 +38,20 @@ import (
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var jsonlogger = logger.NewJsonLogger()
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// Work holds the current work
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type Work struct {
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Number uint64
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Nonce uint64
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MixDigest []byte
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SeedHash []byte
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}
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const (
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resultQueueSize = 10
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miningLogAtDepth = 5
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)
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// Agent can register themself with the worker
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type Agent interface {
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Work() chan<- *types.Block
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SetReturnCh(chan<- *types.Block)
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Work() chan<- *Work
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SetReturnCh(chan<- *Result)
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Stop()
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Start()
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GetHashRate() int64
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}
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const miningLogAtDepth = 5
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type uint64RingBuffer struct {
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ints []uint64 //array of all integers in buffer
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next int //where is the next insertion? assert 0 <= next < len(ints)
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@ -64,7 +59,7 @@ type uint64RingBuffer struct {
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// environment is the workers current environment and holds
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// all of the current state information
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type environment struct {
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type Work struct {
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state *state.StateDB // apply state changes here
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coinbase *state.StateObject // the miner's account
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ancestors *set.Set // ancestor set (used for checking uncle parent validity)
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@ -78,11 +73,18 @@ type environment struct {
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lowGasTxs types.Transactions
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localMinedBlocks *uint64RingBuffer // the most recent block numbers that were mined locally (used to check block inclusion)
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block *types.Block // the new block
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Block *types.Block // the new block
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header *types.Header
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txs []*types.Transaction
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receipts []*types.Receipt
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createdAt time.Time
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}
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type Result struct {
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Work *Work
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Block *types.Block
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}
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// worker is the main object which takes care of applying messages to the new state
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@ -90,7 +92,7 @@ type worker struct {
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mu sync.Mutex
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agents []Agent
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recv chan *types.Block
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recv chan *Result
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mux *event.TypeMux
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quit chan struct{}
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pow pow.PoW
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@ -105,7 +107,7 @@ type worker struct {
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extra []byte
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currentMu sync.Mutex
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current *environment
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current *Work
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uncleMu sync.Mutex
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possibleUncles map[common.Hash]*types.Block
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@ -116,6 +118,8 @@ type worker struct {
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// atomic status counters
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mining int32
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atWork int32
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fullValidation bool
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}
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func newWorker(coinbase common.Address, eth core.Backend) *worker {
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@ -123,7 +127,7 @@ func newWorker(coinbase common.Address, eth core.Backend) *worker {
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eth: eth,
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mux: eth.EventMux(),
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extraDb: eth.ExtraDb(),
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recv: make(chan *types.Block),
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recv: make(chan *Result, resultQueueSize),
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gasPrice: new(big.Int),
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chain: eth.ChainManager(),
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proc: eth.BlockProcessor(),
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@ -131,6 +135,7 @@ func newWorker(coinbase common.Address, eth core.Backend) *worker {
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coinbase: coinbase,
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txQueue: make(map[common.Hash]*types.Transaction),
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quit: make(chan struct{}),
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fullValidation: false,
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}
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go worker.update()
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go worker.wait()
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@ -163,7 +168,7 @@ func (self *worker) pendingBlock() *types.Block {
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self.current.receipts,
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)
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}
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return self.current.block
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return self.current.Block
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}
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func (self *worker) start() {
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@ -250,34 +255,53 @@ func newLocalMinedBlock(blockNumber uint64, prevMinedBlocks *uint64RingBuffer) (
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func (self *worker) wait() {
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for {
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for block := range self.recv {
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for result := range self.recv {
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atomic.AddInt32(&self.atWork, -1)
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if block == nil {
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if result == nil {
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continue
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}
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block := result.Block
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parent := self.chain.GetBlock(block.ParentHash())
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if parent == nil {
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glog.V(logger.Error).Infoln("Invalid block found during mining")
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continue
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}
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if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent, true); err != nil && err != core.BlockFutureErr {
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glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
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continue
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}
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if self.fullValidation {
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if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil {
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glog.V(logger.Error).Infoln("mining err", err)
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continue
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}
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go self.mux.Post(core.NewMinedBlockEvent{block})
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} else {
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parent := self.chain.GetBlock(block.ParentHash())
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if parent == nil {
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glog.V(logger.Error).Infoln("Invalid block found during mining")
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continue
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}
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if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent, true); err != nil && err != core.BlockFutureErr {
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glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
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continue
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}
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stat, err := self.chain.WriteBlock(block, false)
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if err != nil {
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glog.V(logger.Error).Infoln("error writing block to chain", err)
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continue
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}
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// check if canon block and write transactions
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if stat == core.CanonStatTy {
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// This puts transactions in a extra db for rpc
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core.PutTransactions(self.extraDb, block, block.Transactions())
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// store the receipts
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core.PutReceipts(self.extraDb, self.current.receipts)
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stat, err := self.chain.WriteBlock(block, false)
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if err != nil {
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glog.V(logger.Error).Infoln("error writing block to chain", err)
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continue
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}
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// check if canon block and write transactions
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if stat == core.CanonStatTy {
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// This puts transactions in a extra db for rpc
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core.PutTransactions(self.extraDb, block, block.Transactions())
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// store the receipts
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core.PutReceipts(self.extraDb, self.current.receipts)
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}
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// broadcast before waiting for validation
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go func(block *types.Block, logs state.Logs) {
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self.mux.Post(core.NewMinedBlockEvent{block})
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self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
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if stat == core.CanonStatTy {
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self.mux.Post(core.ChainHeadEvent{block})
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self.mux.Post(logs)
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}
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}(block, self.current.state.Logs())
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}
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// check staleness and display confirmation
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@ -289,19 +313,8 @@ func (self *worker) wait() {
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confirm = "Wait 5 blocks for confirmation"
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self.current.localMinedBlocks = newLocalMinedBlock(block.Number().Uint64(), self.current.localMinedBlocks)
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}
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glog.V(logger.Info).Infof("🔨 Mined %sblock (#%v / %x). %s", stale, block.Number(), block.Hash().Bytes()[:4], confirm)
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// broadcast before waiting for validation
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go func(block *types.Block, logs state.Logs) {
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self.mux.Post(core.NewMinedBlockEvent{block})
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self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
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if stat == core.CanonStatTy {
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self.mux.Post(core.ChainHeadEvent{block})
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self.mux.Post(logs)
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}
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}(block, self.current.state.Logs())
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self.commitNewWork()
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}
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}
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@ -320,7 +333,7 @@ func (self *worker) push() {
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atomic.AddInt32(&self.atWork, 1)
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if agent.Work() != nil {
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agent.Work() <- self.current.block
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agent.Work() <- self.current
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}
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}
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}
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@ -329,13 +342,14 @@ func (self *worker) push() {
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// makeCurrent creates a new environment for the current cycle.
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func (self *worker) makeCurrent(parent *types.Block, header *types.Header) {
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state := state.New(parent.Root(), self.eth.StateDb())
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current := &environment{
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current := &Work{
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state: state,
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ancestors: set.New(),
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family: set.New(),
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uncles: set.New(),
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header: header,
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coinbase: state.GetOrNewStateObject(self.coinbase),
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createdAt: time.Now(),
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}
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// when 08 is processed ancestors contain 07 (quick block)
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@ -391,10 +405,10 @@ func (self *worker) isBlockLocallyMined(deepBlockNum uint64) bool {
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return block != nil && block.Coinbase() == self.coinbase
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}
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func (self *worker) logLocalMinedBlocks(previous *environment) {
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func (self *worker) logLocalMinedBlocks(previous *Work) {
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if previous != nil && self.current.localMinedBlocks != nil {
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nextBlockNum := self.current.block.NumberU64()
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for checkBlockNum := previous.block.NumberU64(); checkBlockNum < nextBlockNum; checkBlockNum++ {
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nextBlockNum := self.current.Block.NumberU64()
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for checkBlockNum := previous.Block.NumberU64(); checkBlockNum < nextBlockNum; checkBlockNum++ {
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inspectBlockNum := checkBlockNum - miningLogAtDepth
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if self.isBlockLocallyMined(inspectBlockNum) {
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glog.V(logger.Info).Infof("🔨 🔗 Mined %d blocks back: block #%v", miningLogAtDepth, inspectBlockNum)
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@ -480,12 +494,12 @@ func (self *worker) commitNewWork() {
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}
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// create the new block whose nonce will be mined.
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current.block = types.NewBlock(header, current.txs, uncles, current.receipts)
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self.current.block.Td = new(big.Int).Set(core.CalcTD(self.current.block, self.chain.GetBlock(self.current.block.ParentHash())))
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current.Block = types.NewBlock(header, current.txs, uncles, current.receipts)
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self.current.Block.Td = new(big.Int).Set(core.CalcTD(self.current.Block, self.chain.GetBlock(self.current.Block.ParentHash())))
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// We only care about logging if we're actually mining.
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if atomic.LoadInt32(&self.mining) == 1 {
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glog.V(logger.Info).Infof("commit new work on block %v with %d txs & %d uncles. Took %v\n", current.block.Number(), current.tcount, len(uncles), time.Since(tstart))
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glog.V(logger.Info).Infof("commit new work on block %v with %d txs & %d uncles. Took %v\n", current.Block.Number(), current.tcount, len(uncles), time.Since(tstart))
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self.logLocalMinedBlocks(previous)
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}
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@ -507,7 +521,7 @@ func (self *worker) commitUncle(uncle *types.Header) error {
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return nil
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}
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func (env *environment) commitTransactions(transactions types.Transactions, gasPrice *big.Int, proc *core.BlockProcessor) {
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func (env *Work) commitTransactions(transactions types.Transactions, gasPrice *big.Int, proc *core.BlockProcessor) {
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for _, tx := range transactions {
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// We can skip err. It has already been validated in the tx pool
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from, _ := tx.From()
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@ -565,7 +579,7 @@ func (env *environment) commitTransactions(transactions types.Transactions, gasP
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}
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}
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func (env *environment) commitTransaction(tx *types.Transaction, proc *core.BlockProcessor) error {
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func (env *Work) commitTransaction(tx *types.Transaction, proc *core.BlockProcessor) error {
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snap := env.state.Copy()
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receipt, _, err := proc.ApplyTransaction(env.coinbase, env.state, env.header, tx, env.header.GasUsed, true)
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if err != nil {
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