// checkQueue moves transactions that have become processable to main pool.
func (pool *TxPool) checkQueue() {
	// init delayed since tx pool could have been started before any state sync
	if pool.pendingState == nil {
		pool.resetState()
	}

	var addq txQueue
	for address, txs := range pool.queue {
		// guessed nonce is the nonce currently kept by the tx pool (pending state)
		guessedNonce := pool.pendingState.GetNonce(address)
		// true nonce is the nonce known by the last state
		currentState, err := pool.currentState()
		if err != nil {
			glog.Errorf("could not get current state: %v", err)
			return
		}
		trueNonce := currentState.GetNonce(address)
		addq := addq[:0]
		for hash, tx := range txs {
			if tx.Nonce() < trueNonce {
				// Drop queued transactions whose nonce is lower than
				// the account nonce because they have been processed.
				delete(txs, hash)
			} else {
				// Collect the remaining transactions for the next pass.
				addq = append(addq, txQueueEntry{hash, address, tx})
			}
		}
		// Find the next consecutive nonce range starting at the
		// current account nonce.
		sort.Sort(addq)
		for i, e := range addq {
			// start deleting the transactions from the queue if they exceed the limit
			if i > maxQueued {
				delete(pool.queue[address], e.hash)
				continue
			}

			if e.Nonce() > guessedNonce {
				if len(addq)-i > maxQueued {
					if glog.V(logger.Debug) {
						glog.Infof("Queued tx limit exceeded for %s. Tx %s removed\n", common.PP(address[:]), common.PP(e.hash[:]))
					}
					for j := i + maxQueued; j < len(addq); j++ {
						delete(txs, addq[j].hash)
					}
				}
				break
			}
			delete(txs, e.hash)
			pool.addTx(e.hash, address, e.Transaction)
		}
		// Delete the entire queue entry if it became empty.
		if len(txs) == 0 {
			delete(pool.queue, address)
		}
	}
}
func (bc *ChainManager) write(block *types.Block) {
	tstart := time.Now()

	enc, _ := rlp.EncodeToBytes((*types.StorageBlock)(block))
	key := append(blockHashPre, block.Hash().Bytes()...)
	err := bc.blockDb.Put(key, enc)
	if err != nil {
		glog.Fatal("db write fail:", err)
	}

	if glog.V(logger.Debug) {
		glog.Infof("wrote block #%v %s. Took %v\n", block.Number(), common.PP(block.Hash().Bytes()), time.Since(tstart))
	}
}
// WriteBlock writes a block to the database
func WriteBlock(db common.Database, block *types.Block) error {
	tstart := time.Now()

	enc, _ := rlp.EncodeToBytes((*types.StorageBlock)(block))
	key := append(blockHashPre, block.Hash().Bytes()...)
	err := db.Put(key, enc)
	if err != nil {
		glog.Fatal("db write fail:", err)
		return err
	}

	if glog.V(logger.Debug) {
		glog.Infof("wrote block #%v %s. Took %v\n", block.Number(), common.PP(block.Hash().Bytes()), time.Since(tstart))
	}

	return nil
}
// checkQueue moves transactions that have become processable to main pool.
func (pool *TxPool) checkQueue() {
	state := pool.pendingState

	var addq txQueue
	for address, txs := range pool.queue {
		// guessed nonce is the nonce currently kept by the tx pool (pending state)
		guessedNonce := state.GetNonce(address)
		// true nonce is the nonce known by the last state
		trueNonce := pool.currentState().GetNonce(address)
		addq := addq[:0]
		for hash, tx := range txs {
			if tx.AccountNonce < trueNonce {
				// Drop queued transactions whose nonce is lower than
				// the account nonce because they have been processed.
				delete(txs, hash)
			} else {
				// Collect the remaining transactions for the next pass.
				addq = append(addq, txQueueEntry{hash, address, tx})
			}
		}
		// Find the next consecutive nonce range starting at the
		// current account nonce.
		sort.Sort(addq)
		for i, e := range addq {
			// start deleting the transactions from the queue if they exceed the limit
			if i > maxQueued {
				if glog.V(logger.Debug) {
					glog.Infof("Queued tx limit exceeded for %s. Tx %s removed\n", common.PP(address[:]), common.PP(e.hash[:]))
				}
				delete(pool.queue[address], e.hash)
				continue
			}

			if e.AccountNonce > guessedNonce {
				break
			}
			delete(txs, e.hash)
			pool.addTx(e.hash, address, e.Transaction)
		}
		// Delete the entire queue entry if it became empty.
		if len(txs) == 0 {
			delete(pool.queue, address)
		}
	}
}
// checkQueue moves transactions that have become processable to main pool.
func (pool *TxPool) checkQueue() {
	// init delayed since tx pool could have been started before any state sync
	if pool.pendingState == nil {
		pool.resetState()
	}

	var promote txQueue
	for address, txs := range pool.queue {
		currentState, err := pool.currentState()
		if err != nil {
			glog.Errorf("could not get current state: %v", err)
			return
		}
		balance := currentState.GetBalance(address)

		var (
			guessedNonce = pool.pendingState.GetNonce(address) // nonce currently kept by the tx pool (pending state)
			trueNonce    = currentState.GetNonce(address)      // nonce known by the last state
		)
		promote = promote[:0]
		for hash, tx := range txs {
			// Drop processed or out of fund transactions
			if tx.Nonce() < trueNonce || balance.Cmp(tx.Cost()) < 0 {
				if glog.V(logger.Core) {
					glog.Infof("removed tx (%v) from pool queue: low tx nonce or out of funds\n", tx)
				}
				delete(txs, hash)
				continue
			}
			// Collect the remaining transactions for the next pass.
			promote = append(promote, txQueueEntry{hash, address, tx})
		}
		// Find the next consecutive nonce range starting at the current account nonce,
		// pushing the guessed nonce forward if we add consecutive transactions.
		sort.Sort(promote)
		for i, entry := range promote {
			// If we reached a gap in the nonces, enforce transaction limit and stop
			if entry.Nonce() > guessedNonce {
				if len(promote)-i > maxQueued {
					if glog.V(logger.Debug) {
						glog.Infof("Queued tx limit exceeded for %s. Tx %s removed\n", common.PP(address[:]), common.PP(entry.hash[:]))
					}
					for _, drop := range promote[i+maxQueued:] {
						delete(txs, drop.hash)
					}
				}
				break
			}
			// Otherwise promote the transaction and move the guess nonce if needed
			pool.addTx(entry.hash, address, entry.Transaction)
			delete(txs, entry.hash)

			if entry.Nonce() == guessedNonce {
				guessedNonce++
			}
		}
		// Delete the entire queue entry if it became empty.
		if len(txs) == 0 {
			delete(pool.queue, address)
		}
	}
}