Example #1
0
func (self *worker) commitNewWork() {
	self.mu.Lock()
	defer self.mu.Unlock()
	self.uncleMu.Lock()
	defer self.uncleMu.Unlock()
	self.currentMu.Lock()
	defer self.currentMu.Unlock()

	tstart := time.Now()
	parent := self.chain.CurrentBlock()
	tstamp := tstart.Unix()
	if parent.Time().Cmp(new(big.Int).SetInt64(tstamp)) >= 0 {
		tstamp = parent.Time().Int64() + 1
	}
	// this will ensure we're not going off too far in the future
	if now := time.Now().Unix(); tstamp > now+4 {
		wait := time.Duration(tstamp-now) * time.Second
		glog.V(logger.Info).Infoln("We are too far in the future. Waiting for", wait)
		time.Sleep(wait)
	}

	num := parent.Number()
	header := &types.Header{
		ParentHash: parent.Hash(),
		Number:     num.Add(num, common.Big1),
		Difficulty: core.CalcDifficulty(self.config, uint64(tstamp), parent.Time().Uint64(), parent.Number(), parent.Difficulty()),
		GasLimit:   core.CalcGasLimit(parent),
		GasUsed:    new(big.Int),
		Coinbase:   self.coinbase,
		Extra:      self.extra,
		Time:       big.NewInt(tstamp),
	}

	previous := self.current
	// Could potentially happen if starting to mine in an odd state.
	err := self.makeCurrent(parent, header)
	if err != nil {
		glog.V(logger.Info).Infoln("Could not create new env for mining, retrying on next block.")
		return
	}
	work := self.current

	/* //approach 1
	transactions := self.eth.TxPool().GetTransactions()
	sort.Sort(types.TxByNonce(transactions))
	*/

	//approach 2
	transactions := self.eth.TxPool().GetTransactions()
	types.SortByPriceAndNonce(transactions)

	/* // approach 3
	// commit transactions for this run.
	txPerOwner := make(map[common.Address]types.Transactions)
	// Sort transactions by owner
	for _, tx := range self.eth.TxPool().GetTransactions() {
		from, _ := tx.From() // we can ignore the sender error
		txPerOwner[from] = append(txPerOwner[from], tx)
	}
	var (
		singleTxOwner types.Transactions
		multiTxOwner  types.Transactions
	)
	// Categorise transactions by
	// 1. 1 owner tx per block
	// 2. multi txs owner per block
	for _, txs := range txPerOwner {
		if len(txs) == 1 {
			singleTxOwner = append(singleTxOwner, txs[0])
		} else {
			multiTxOwner = append(multiTxOwner, txs...)
		}
	}
	sort.Sort(types.TxByPrice(singleTxOwner))
	sort.Sort(types.TxByNonce(multiTxOwner))
	transactions := append(singleTxOwner, multiTxOwner...)
	*/

	work.commitTransactions(self.mux, transactions, self.gasPrice, self.chain)
	self.eth.TxPool().RemoveTransactions(work.lowGasTxs)

	// compute uncles for the new block.
	var (
		uncles    []*types.Header
		badUncles []common.Hash
	)
	for hash, uncle := range self.possibleUncles {
		if len(uncles) == 2 {
			break
		}
		if err := self.commitUncle(work, uncle.Header()); err != nil {
			if glog.V(logger.Ridiculousness) {
				glog.V(logger.Detail).Infof("Bad uncle found and will be removed (%x)\n", hash[:4])
				glog.V(logger.Detail).Infoln(uncle)
			}
			badUncles = append(badUncles, hash)
		} else {
			glog.V(logger.Debug).Infof("commiting %x as uncle\n", hash[:4])
			uncles = append(uncles, uncle.Header())
		}
	}
	for _, hash := range badUncles {
		delete(self.possibleUncles, hash)
	}

	if atomic.LoadInt32(&self.mining) == 1 {
		// commit state root after all state transitions.
		core.AccumulateRewards(work.state, header, uncles)
		header.Root = work.state.IntermediateRoot()
	}

	// create the new block whose nonce will be mined.
	work.Block = types.NewBlock(header, work.txs, uncles, work.receipts)

	// We only care about logging if we're actually mining.
	if atomic.LoadInt32(&self.mining) == 1 {
		glog.V(logger.Info).Infof("commit new work on block %v with %d txs & %d uncles. Took %v\n", work.Block.Number(), work.tcount, len(uncles), time.Since(tstart))
		self.logLocalMinedBlocks(work, previous)
	}
	self.push(work)
}
Example #2
0
func (self *worker) commitNewWork() {
	self.mu.Lock()
	defer self.mu.Unlock()
	self.uncleMu.Lock()
	defer self.uncleMu.Unlock()
	self.currentMu.Lock()
	defer self.currentMu.Unlock()

	tstart := time.Now()
	parent := self.chain.CurrentBlock()
	tstamp := tstart.Unix()
	if tstamp <= parent.Time() {
		tstamp = parent.Time() + 1
	}
	// this will ensure we're not going off too far in the future
	if now := time.Now().Unix(); tstamp > now+4 {
		wait := time.Duration(tstamp-now) * time.Second
		glog.V(logger.Info).Infoln("We are too far in the future. Waiting for", wait)
		time.Sleep(wait)
	}

	num := parent.Number()
	header := &types.Header{
		ParentHash: parent.Hash(),
		Number:     num.Add(num, common.Big1),
		Difficulty: core.CalcDifficulty(tstamp, parent.Time(), parent.Difficulty()),
		GasLimit:   core.CalcGasLimit(parent),
		GasUsed:    new(big.Int),
		Coinbase:   self.coinbase,
		Extra:      self.extra,
		Time:       uint64(tstamp),
	}

	previous := self.current
	self.makeCurrent(parent, header)
	current := self.current

	// commit transactions for this run.
	transactions := self.eth.TxPool().GetTransactions()
	sort.Sort(types.TxByNonce{transactions})
	current.coinbase.SetGasLimit(header.GasLimit)
	current.commitTransactions(transactions, self.gasPrice, self.proc)
	self.eth.TxPool().RemoveTransactions(current.lowGasTxs)

	// compute uncles for the new block.
	var (
		uncles    []*types.Header
		badUncles []common.Hash
	)
	for hash, uncle := range self.possibleUncles {
		if len(uncles) == 2 {
			break
		}
		if err := self.commitUncle(uncle.Header()); err != nil {
			if glog.V(logger.Ridiculousness) {
				glog.V(logger.Detail).Infof("Bad uncle found and will be removed (%x)\n", hash[:4])
				glog.V(logger.Detail).Infoln(uncle)
			}
			badUncles = append(badUncles, hash)
		} else {
			glog.V(logger.Debug).Infof("commiting %x as uncle\n", hash[:4])
			uncles = append(uncles, uncle.Header())
		}
	}
	for _, hash := range badUncles {
		delete(self.possibleUncles, hash)
	}

	if atomic.LoadInt32(&self.mining) == 1 {
		// commit state root after all state transitions.
		core.AccumulateRewards(self.current.state, header, uncles)
		current.state.Update()
		self.current.state.Sync()
		header.Root = current.state.Root()
	}

	// create the new block whose nonce will be mined.
	current.block = types.NewBlock(header, current.txs, uncles, current.receipts)
	self.current.block.Td = new(big.Int).Set(core.CalcTD(self.current.block, self.chain.GetBlock(self.current.block.ParentHash())))

	// We only care about logging if we're actually mining.
	if atomic.LoadInt32(&self.mining) == 1 {
		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))
		self.logLocalMinedBlocks(previous)
	}

	self.push()
}