miner: regenerate mining work every 3 seconds (#17413)
* miner: regenerate mining work every 3 seconds * miner: polish
This commit is contained in:
parent
5952d962dc
commit
54216811a0
@ -29,9 +29,6 @@ type PendingLogsEvent struct {
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Logs []*types.Log
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}
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// PendingStateEvent is posted pre mining and notifies of pending state changes.
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type PendingStateEvent struct{}
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// NewMinedBlockEvent is posted when a block has been imported.
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type NewMinedBlockEvent struct{ Block *types.Block }
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318
miner/worker.go
318
miner/worker.go
@ -40,19 +40,27 @@ import (
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const (
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// resultQueueSize is the size of channel listening to sealing result.
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resultQueueSize = 10
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// txChanSize is the size of channel listening to NewTxsEvent.
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// The number is referenced from the size of tx pool.
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txChanSize = 4096
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// chainHeadChanSize is the size of channel listening to ChainHeadEvent.
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chainHeadChanSize = 10
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// chainSideChanSize is the size of channel listening to ChainSideEvent.
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chainSideChanSize = 10
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// miningLogAtDepth is the number of confirmations before logging successful mining.
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miningLogAtDepth = 5
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// blockRecommitInterval is the time interval to recreate the mining block with
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// any newly arrived transactions.
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blockRecommitInterval = 3 * time.Second
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)
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// Env is the worker's current environment and holds all of the current state information.
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type Env struct {
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config *params.ChainConfig
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// environment is the worker's current environment and holds all of the current state information.
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type environment struct {
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signer types.Signer
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state *state.StateDB // apply state changes here
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@ -67,105 +75,6 @@ type Env struct {
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receipts []*types.Receipt
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}
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func (env *Env) commitTransaction(tx *types.Transaction, bc *core.BlockChain, coinbase common.Address, gp *core.GasPool) (error, []*types.Log) {
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snap := env.state.Snapshot()
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receipt, _, err := core.ApplyTransaction(env.config, bc, &coinbase, gp, env.state, env.header, tx, &env.header.GasUsed, vm.Config{})
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if err != nil {
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env.state.RevertToSnapshot(snap)
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return err, nil
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}
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env.txs = append(env.txs, tx)
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env.receipts = append(env.receipts, receipt)
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return nil, receipt.Logs
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}
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func (env *Env) commitTransactions(mux *event.TypeMux, txs *types.TransactionsByPriceAndNonce, bc *core.BlockChain, coinbase common.Address) {
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if env.gasPool == nil {
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env.gasPool = new(core.GasPool).AddGas(env.header.GasLimit)
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}
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var coalescedLogs []*types.Log
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for {
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// If we don't have enough gas for any further transactions then we're done
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if env.gasPool.Gas() < params.TxGas {
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log.Trace("Not enough gas for further transactions", "have", env.gasPool, "want", params.TxGas)
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break
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}
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// Retrieve the next transaction and abort if all done
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tx := txs.Peek()
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if tx == nil {
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break
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}
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// Error may be ignored here. The error has already been checked
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// during transaction acceptance is the transaction pool.
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//
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// We use the eip155 signer regardless of the current hf.
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from, _ := types.Sender(env.signer, tx)
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// Check whether the tx is replay protected. If we're not in the EIP155 hf
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// phase, start ignoring the sender until we do.
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if tx.Protected() && !env.config.IsEIP155(env.header.Number) {
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log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", env.config.EIP155Block)
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txs.Pop()
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continue
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}
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// Start executing the transaction
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env.state.Prepare(tx.Hash(), common.Hash{}, env.tcount)
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err, logs := env.commitTransaction(tx, bc, coinbase, env.gasPool)
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switch err {
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case core.ErrGasLimitReached:
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// Pop the current out-of-gas transaction without shifting in the next from the account
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log.Trace("Gas limit exceeded for current block", "sender", from)
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txs.Pop()
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case core.ErrNonceTooLow:
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// New head notification data race between the transaction pool and miner, shift
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log.Trace("Skipping transaction with low nonce", "sender", from, "nonce", tx.Nonce())
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txs.Shift()
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case core.ErrNonceTooHigh:
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// Reorg notification data race between the transaction pool and miner, skip account =
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log.Trace("Skipping account with hight nonce", "sender", from, "nonce", tx.Nonce())
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txs.Pop()
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case nil:
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// Everything ok, collect the logs and shift in the next transaction from the same account
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coalescedLogs = append(coalescedLogs, logs...)
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env.tcount++
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txs.Shift()
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default:
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// Strange error, discard the transaction and get the next in line (note, the
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// nonce-too-high clause will prevent us from executing in vain).
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log.Debug("Transaction failed, account skipped", "hash", tx.Hash(), "err", err)
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txs.Shift()
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}
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}
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if len(coalescedLogs) > 0 || env.tcount > 0 {
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// make a copy, the state caches the logs and these logs get "upgraded" from pending to mined
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// logs by filling in the block hash when the block was mined by the local miner. This can
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// cause a race condition if a log was "upgraded" before the PendingLogsEvent is processed.
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cpy := make([]*types.Log, len(coalescedLogs))
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for i, l := range coalescedLogs {
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cpy[i] = new(types.Log)
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*cpy[i] = *l
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}
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go func(logs []*types.Log, tcount int) {
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if len(logs) > 0 {
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mux.Post(core.PendingLogsEvent{Logs: logs})
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}
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if tcount > 0 {
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mux.Post(core.PendingStateEvent{})
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}
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}(cpy, env.tcount)
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}
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}
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// task contains all information for consensus engine sealing and result submitting.
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type task struct {
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receipts []*types.Receipt
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@ -174,6 +83,17 @@ type task struct {
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createdAt time.Time
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}
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const (
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commitInterruptNone int32 = iota
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commitInterruptNewHead
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commitInterruptResubmit
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)
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type newWorkReq struct {
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interrupt *int32
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noempty bool
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}
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// worker is the main object which takes care of submitting new work to consensus engine
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// and gathering the sealing result.
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type worker struct {
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@ -192,12 +112,13 @@ type worker struct {
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chainSideSub event.Subscription
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// Channels
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newWork chan struct{}
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newWorkCh chan *newWorkReq
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taskCh chan *task
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resultCh chan *task
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startCh chan struct{}
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exitCh chan struct{}
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current *Env // An environment for current running cycle.
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current *environment // An environment for current running cycle.
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possibleUncles map[common.Hash]*types.Block // A set of side blocks as the possible uncle blocks.
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unconfirmed *unconfirmedBlocks // A set of locally mined blocks pending canonicalness confirmations.
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@ -230,10 +151,11 @@ func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend,
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txsCh: make(chan core.NewTxsEvent, txChanSize),
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chainHeadCh: make(chan core.ChainHeadEvent, chainHeadChanSize),
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chainSideCh: make(chan core.ChainSideEvent, chainSideChanSize),
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newWork: make(chan struct{}, 1),
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newWorkCh: make(chan *newWorkReq),
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taskCh: make(chan *task),
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resultCh: make(chan *task, resultQueueSize),
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exitCh: make(chan struct{}),
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startCh: make(chan struct{}, 1),
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}
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// Subscribe NewTxsEvent for tx pool
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worker.txsSub = eth.TxPool().SubscribeNewTxsEvent(worker.txsCh)
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@ -242,11 +164,13 @@ func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend,
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worker.chainSideSub = eth.BlockChain().SubscribeChainSideEvent(worker.chainSideCh)
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go worker.mainLoop()
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go worker.newWorkLoop()
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go worker.resultLoop()
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go worker.taskLoop()
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// Submit first work to initialize pending state.
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worker.newWork <- struct{}{}
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worker.startCh <- struct{}{}
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return worker
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}
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@ -286,7 +210,7 @@ func (w *worker) pendingBlock() *types.Block {
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// start sets the running status as 1 and triggers new work submitting.
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func (w *worker) start() {
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atomic.StoreInt32(&w.running, 1)
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w.newWork <- struct{}{}
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w.startCh <- struct{}{}
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}
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// stop sets the running status as 0.
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@ -313,6 +237,44 @@ func (w *worker) close() {
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}
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}
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// newWorkLoop is a standalone goroutine to submit new mining work upon received events.
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func (w *worker) newWorkLoop() {
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var interrupt *int32
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timer := time.NewTimer(0)
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<-timer.C // discard the initial tick
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// recommit aborts in-flight transaction execution with given signal and resubmits a new one.
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recommit := func(noempty bool, s int32) {
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if interrupt != nil {
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atomic.StoreInt32(interrupt, s)
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}
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interrupt = new(int32)
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w.newWorkCh <- &newWorkReq{interrupt: interrupt, noempty: noempty}
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timer.Reset(blockRecommitInterval)
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}
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for {
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select {
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case <-w.startCh:
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recommit(false, commitInterruptNewHead)
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case <-w.chainHeadCh:
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recommit(false, commitInterruptNewHead)
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case <-timer.C:
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// If mining is running resubmit a new work cycle periodically to pull in
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// higher priced transactions. Disable this overhead for pending blocks.
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if w.isRunning() && (w.config.Clique == nil || w.config.Clique.Period > 0) {
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recommit(true, commitInterruptResubmit)
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}
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case <-w.exitCh:
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return
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}
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}
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}
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// mainLoop is a standalone goroutine to regenerate the sealing task based on the received event.
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func (w *worker) mainLoop() {
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defer w.txsSub.Unsubscribe()
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@ -321,13 +283,8 @@ func (w *worker) mainLoop() {
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for {
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select {
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case <-w.newWork:
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// Submit a work when the worker is created or started.
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w.commitNewWork()
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case <-w.chainHeadCh:
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// Resubmit a work for new cycle once worker receives chain head event.
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w.commitNewWork()
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case req := <-w.newWorkCh:
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w.commitNewWork(req.interrupt, req.noempty)
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case ev := <-w.chainSideCh:
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if _, exist := w.possibleUncles[ev.Block.Hash()]; exist {
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@ -364,9 +321,9 @@ func (w *worker) mainLoop() {
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// already included in the current mining block. These transactions will
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// be automatically eliminated.
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if !w.isRunning() && w.current != nil {
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w.mu.Lock()
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w.mu.RLock()
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coinbase := w.coinbase
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w.mu.Unlock()
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w.mu.RUnlock()
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txs := make(map[common.Address]types.Transactions)
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for _, tx := range ev.Txs {
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@ -374,12 +331,12 @@ func (w *worker) mainLoop() {
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txs[acc] = append(txs[acc], tx)
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}
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txset := types.NewTransactionsByPriceAndNonce(w.current.signer, txs)
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w.current.commitTransactions(w.mux, txset, w.chain, coinbase)
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w.commitTransactions(txset, coinbase, nil)
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w.updateSnapshot()
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} else {
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// If we're mining, but nothing is being processed, wake on new transactions
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if w.config.Clique != nil && w.config.Clique.Period == 0 {
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w.commitNewWork()
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w.commitNewWork(nil, false)
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}
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}
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@ -508,8 +465,7 @@ func (w *worker) makeCurrent(parent *types.Block, header *types.Header) error {
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if err != nil {
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return err
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}
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env := &Env{
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config: w.config,
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env := &environment{
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signer: types.NewEIP155Signer(w.config.ChainID),
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state: state,
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ancestors: mapset.NewSet(),
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@ -534,7 +490,7 @@ func (w *worker) makeCurrent(parent *types.Block, header *types.Header) error {
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}
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// commitUncle adds the given block to uncle block set, returns error if failed to add.
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func (w *worker) commitUncle(env *Env, uncle *types.Header) error {
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func (w *worker) commitUncle(env *environment, uncle *types.Header) error {
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hash := uncle.Hash()
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if env.uncles.Contains(hash) {
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return fmt.Errorf("uncle not unique")
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@ -579,8 +535,120 @@ func (w *worker) updateSnapshot() {
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w.snapshotState = w.current.state.Copy()
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}
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func (w *worker) commitTransaction(tx *types.Transaction, coinbase common.Address) ([]*types.Log, error) {
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snap := w.current.state.Snapshot()
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receipt, _, err := core.ApplyTransaction(w.config, w.chain, &coinbase, w.current.gasPool, w.current.state, w.current.header, tx, &w.current.header.GasUsed, vm.Config{})
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if err != nil {
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w.current.state.RevertToSnapshot(snap)
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return nil, err
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}
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w.current.txs = append(w.current.txs, tx)
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w.current.receipts = append(w.current.receipts, receipt)
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return receipt.Logs, nil
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}
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func (w *worker) commitTransactions(txs *types.TransactionsByPriceAndNonce, coinbase common.Address, interrupt *int32) bool {
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// Short circuit if current is nil
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if w.current == nil {
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return true
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}
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if w.current.gasPool == nil {
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w.current.gasPool = new(core.GasPool).AddGas(w.current.header.GasLimit)
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}
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var coalescedLogs []*types.Log
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for {
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// In the following three cases, we will interrupt the execution of the transaction.
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// (1) new head block event arrival, the interrupt signal is 1
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// (2) worker start or restart, the interrupt signal is 1
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// (3) worker recreate the mining block with any newly arrived transactions, the interrupt signal is 2.
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// For the first two cases, the semi-finished work will be discarded.
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// For the third case, the semi-finished work will be submitted to the consensus engine.
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// TODO(rjl493456442) give feedback to newWorkLoop to adjust resubmit interval if it is too short.
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if interrupt != nil && atomic.LoadInt32(interrupt) != commitInterruptNone {
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return atomic.LoadInt32(interrupt) == commitInterruptNewHead
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}
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// If we don't have enough gas for any further transactions then we're done
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if w.current.gasPool.Gas() < params.TxGas {
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log.Trace("Not enough gas for further transactions", "have", w.current.gasPool, "want", params.TxGas)
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break
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}
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// Retrieve the next transaction and abort if all done
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tx := txs.Peek()
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if tx == nil {
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break
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}
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// Error may be ignored here. The error has already been checked
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// during transaction acceptance is the transaction pool.
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//
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// We use the eip155 signer regardless of the current hf.
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from, _ := types.Sender(w.current.signer, tx)
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// Check whether the tx is replay protected. If we're not in the EIP155 hf
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// phase, start ignoring the sender until we do.
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if tx.Protected() && !w.config.IsEIP155(w.current.header.Number) {
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log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", w.config.EIP155Block)
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txs.Pop()
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continue
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}
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// Start executing the transaction
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w.current.state.Prepare(tx.Hash(), common.Hash{}, w.current.tcount)
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logs, err := w.commitTransaction(tx, coinbase)
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switch err {
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case core.ErrGasLimitReached:
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// Pop the current out-of-gas transaction without shifting in the next from the account
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log.Trace("Gas limit exceeded for current block", "sender", from)
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txs.Pop()
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case core.ErrNonceTooLow:
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// New head notification data race between the transaction pool and miner, shift
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log.Trace("Skipping transaction with low nonce", "sender", from, "nonce", tx.Nonce())
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txs.Shift()
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case core.ErrNonceTooHigh:
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// Reorg notification data race between the transaction pool and miner, skip account =
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log.Trace("Skipping account with hight nonce", "sender", from, "nonce", tx.Nonce())
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txs.Pop()
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case nil:
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// Everything ok, collect the logs and shift in the next transaction from the same account
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coalescedLogs = append(coalescedLogs, logs...)
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w.current.tcount++
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txs.Shift()
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default:
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// Strange error, discard the transaction and get the next in line (note, the
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// nonce-too-high clause will prevent us from executing in vain).
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log.Debug("Transaction failed, account skipped", "hash", tx.Hash(), "err", err)
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txs.Shift()
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}
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}
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if !w.isRunning() && len(coalescedLogs) > 0 {
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// We don't push the pendingLogsEvent while we are mining. The reason is that
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// when we are mining, the worker will regenerate a mining block every 3 seconds.
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// In order to avoid pushing the repeated pendingLog, we disable the pending log pushing.
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// make a copy, the state caches the logs and these logs get "upgraded" from pending to mined
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// logs by filling in the block hash when the block was mined by the local miner. This can
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// cause a race condition if a log was "upgraded" before the PendingLogsEvent is processed.
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cpy := make([]*types.Log, len(coalescedLogs))
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for i, l := range coalescedLogs {
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cpy[i] = new(types.Log)
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*cpy[i] = *l
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}
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go w.mux.Post(core.PendingLogsEvent{Logs: cpy})
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}
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return false
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}
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// commitNewWork generates several new sealing tasks based on the parent block.
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func (w *worker) commitNewWork() {
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func (w *worker) commitNewWork(interrupt *int32, noempty bool) {
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w.mu.RLock()
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defer w.mu.RUnlock()
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@ -666,9 +734,11 @@ func (w *worker) commitNewWork() {
|
||||
delete(w.possibleUncles, hash)
|
||||
}
|
||||
|
||||
if !noempty {
|
||||
// Create an empty block based on temporary copied state for sealing in advance without waiting block
|
||||
// execution finished.
|
||||
w.commit(uncles, nil, false, tstart)
|
||||
}
|
||||
|
||||
// Fill the block with all available pending transactions.
|
||||
pending, err := w.eth.TxPool().Pending()
|
||||
@ -682,7 +752,9 @@ func (w *worker) commitNewWork() {
|
||||
return
|
||||
}
|
||||
txs := types.NewTransactionsByPriceAndNonce(w.current.signer, pending)
|
||||
env.commitTransactions(w.mux, txs, w.chain, w.coinbase)
|
||||
if w.commitTransactions(txs, w.coinbase, interrupt) {
|
||||
return
|
||||
}
|
||||
|
||||
w.commit(uncles, w.fullTaskHook, true, tstart)
|
||||
}
|
||||
|
@ -270,3 +270,68 @@ func TestStreamUncleBlock(t *testing.T) {
|
||||
t.Error("new task timeout")
|
||||
}
|
||||
}
|
||||
|
||||
func TestRegenerateMiningBlockEthash(t *testing.T) {
|
||||
testRegenerateMiningBlock(t, ethashChainConfig, ethash.NewFaker())
|
||||
}
|
||||
|
||||
func TestRegenerateMiningBlockClique(t *testing.T) {
|
||||
testRegenerateMiningBlock(t, cliqueChainConfig, clique.New(cliqueChainConfig.Clique, ethdb.NewMemDatabase()))
|
||||
}
|
||||
|
||||
func testRegenerateMiningBlock(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) {
|
||||
defer engine.Close()
|
||||
|
||||
w, b := newTestWorker(t, chainConfig, engine)
|
||||
defer w.close()
|
||||
|
||||
var taskCh = make(chan struct{})
|
||||
|
||||
taskIndex := 0
|
||||
w.newTaskHook = func(task *task) {
|
||||
if task.block.NumberU64() == 1 {
|
||||
if taskIndex == 2 {
|
||||
receiptLen, balance := 2, big.NewInt(2000)
|
||||
if len(task.receipts) != receiptLen {
|
||||
t.Errorf("receipt number mismatch has %d, want %d", len(task.receipts), receiptLen)
|
||||
}
|
||||
if task.state.GetBalance(acc1Addr).Cmp(balance) != 0 {
|
||||
t.Errorf("account balance mismatch has %d, want %d", task.state.GetBalance(acc1Addr), balance)
|
||||
}
|
||||
}
|
||||
taskCh <- struct{}{}
|
||||
taskIndex += 1
|
||||
}
|
||||
}
|
||||
w.skipSealHook = func(task *task) bool {
|
||||
return true
|
||||
}
|
||||
w.fullTaskHook = func() {
|
||||
time.Sleep(100 * time.Millisecond)
|
||||
}
|
||||
// Ensure worker has finished initialization
|
||||
for {
|
||||
b := w.pendingBlock()
|
||||
if b != nil && b.NumberU64() == 1 {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
w.start()
|
||||
// Ignore the first two works
|
||||
for i := 0; i < 2; i += 1 {
|
||||
select {
|
||||
case <-taskCh:
|
||||
case <-time.NewTimer(time.Second).C:
|
||||
t.Error("new task timeout")
|
||||
}
|
||||
}
|
||||
b.txPool.AddLocals(newTxs)
|
||||
time.Sleep(3 * time.Second)
|
||||
|
||||
select {
|
||||
case <-taskCh:
|
||||
case <-time.NewTimer(time.Second).C:
|
||||
t.Error("new task timeout")
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user