Merge pull request #19 from ethereum/master

Merge

cmd/geth/main.go

@@ -101,6 +101,7 @@ var (
 		utils.MinerNotifyFlag,
 		utils.MinerGasTargetFlag,
 		utils.MinerLegacyGasTargetFlag,
+		utils.MinerGasLimitFlag,
 		utils.MinerGasPriceFlag,
 		utils.MinerLegacyGasPriceFlag,
 		utils.MinerEtherbaseFlag,
@@ -236,7 +237,6 @@ func init() {
 		// Start system runtime metrics collection
 		go metrics.CollectProcessMetrics(3 * time.Second)
 
-		utils.SetupNetwork(ctx)
 		return nil
 	}
 

cmd/geth/usage.go

@@ -189,6 +189,7 @@ var AppHelpFlagGroups = []flagGroup{
 			utils.MinerNotifyFlag,
 			utils.MinerGasPriceFlag,
 			utils.MinerGasTargetFlag,
+			utils.MinerGasLimitFlag,
 			utils.MinerEtherbaseFlag,
 			utils.MinerExtraDataFlag,
 			utils.MinerRecommitIntervalFlag,

cmd/puppeth/module_node.go

@@ -42,7 +42,7 @@ ADD genesis.json /genesis.json
 RUN \
   echo 'geth --cache 512 init /genesis.json' > geth.sh && \{{if .Unlock}}
 	echo 'mkdir -p /root/.ethereum/keystore/ && cp /signer.json /root/.ethereum/keystore/' >> geth.sh && \{{end}}
-	echo $'exec geth --networkid {{.NetworkID}} --cache 512 --port {{.Port}} --maxpeers {{.Peers}} {{.LightFlag}} --ethstats \'{{.Ethstats}}\' {{if .Bootnodes}}--bootnodes {{.Bootnodes}}{{end}} {{if .Etherbase}}--miner.etherbase {{.Etherbase}} --mine --miner.threads 1{{end}} {{if .Unlock}}--unlock 0 --password /signer.pass --mine{{end}} --miner.gastarget {{.GasTarget}} --miner.gasprice {{.GasPrice}}' >> geth.sh
+	echo $'exec geth --networkid {{.NetworkID}} --cache 512 --port {{.Port}} --maxpeers {{.Peers}} {{.LightFlag}} --ethstats \'{{.Ethstats}}\' {{if .Bootnodes}}--bootnodes {{.Bootnodes}}{{end}} {{if .Etherbase}}--miner.etherbase {{.Etherbase}} --mine --miner.threads 1{{end}} {{if .Unlock}}--unlock 0 --password /signer.pass --mine{{end}} --miner.gastarget {{.GasTarget}} --miner.gaslimit {{.GasLimit}} --miner.gasprice {{.GasPrice}}' >> geth.sh
 
 ENTRYPOINT ["/bin/sh", "geth.sh"]
 `
@@ -68,6 +68,7 @@ services:
       - STATS_NAME={{.Ethstats}}
       - MINER_NAME={{.Etherbase}}
       - GAS_TARGET={{.GasTarget}}
+      - GAS_LIMIT={{.GasLimit}}
       - GAS_PRICE={{.GasPrice}}
     logging:
       driver: "json-file"
@@ -104,6 +105,7 @@ func deployNode(client *sshClient, network string, bootnodes []string, config *n
 		"Ethstats":  config.ethstats,
 		"Etherbase": config.etherbase,
 		"GasTarget": uint64(1000000 * config.gasTarget),
+		"GasLimit":  uint64(1000000 * config.gasLimit),
 		"GasPrice":  uint64(1000000000 * config.gasPrice),
 		"Unlock":    config.keyJSON != "",
 	})
@@ -122,6 +124,7 @@ func deployNode(client *sshClient, network string, bootnodes []string, config *n
 		"Ethstats":   config.ethstats[:strings.Index(config.ethstats, ":")],
 		"Etherbase":  config.etherbase,
 		"GasTarget":  config.gasTarget,
+		"GasLimit":   config.gasLimit,
 		"GasPrice":   config.gasPrice,
 	})
 	files[filepath.Join(workdir, "docker-compose.yaml")] = composefile.Bytes()
@@ -160,6 +163,7 @@ type nodeInfos struct {
 	keyJSON    string
 	keyPass    string
 	gasTarget  float64
+	gasLimit   float64
 	gasPrice   float64
 }
 
@@ -175,8 +179,9 @@ func (info *nodeInfos) Report() map[string]string {
 	}
 	if info.gasTarget > 0 {
 		// Miner or signer node
-		report["Gas limit (baseline target)"] = fmt.Sprintf("%0.3f MGas", info.gasTarget)
 		report["Gas price (minimum accepted)"] = fmt.Sprintf("%0.3f GWei", info.gasPrice)
+		report["Gas floor (baseline target)"] = fmt.Sprintf("%0.3f MGas", info.gasTarget)
+		report["Gas ceil  (target maximum)"] = fmt.Sprintf("%0.3f MGas", info.gasLimit)
 
 		if info.etherbase != "" {
 			// Ethash proof-of-work miner
@@ -217,6 +222,7 @@ func checkNode(client *sshClient, network string, boot bool) (*nodeInfos, error)
 	totalPeers, _ := strconv.Atoi(infos.envvars["TOTAL_PEERS"])
 	lightPeers, _ := strconv.Atoi(infos.envvars["LIGHT_PEERS"])
 	gasTarget, _ := strconv.ParseFloat(infos.envvars["GAS_TARGET"], 64)
+	gasLimit, _ := strconv.ParseFloat(infos.envvars["GAS_LIMIT"], 64)
 	gasPrice, _ := strconv.ParseFloat(infos.envvars["GAS_PRICE"], 64)
 
 	// Container available, retrieve its node ID and its genesis json
@@ -256,6 +262,7 @@ func checkNode(client *sshClient, network string, boot bool) (*nodeInfos, error)
 		keyJSON:    keyJSON,
 		keyPass:    keyPass,
 		gasTarget:  gasTarget,
+		gasLimit:   gasLimit,
 		gasPrice:   gasPrice,
 	}
 	stats.enode = fmt.Sprintf("enode://%s@%s:%d", id, client.address, stats.port)

cmd/puppeth/wizard_node.go

@@ -50,7 +50,7 @@ func (w *wizard) deployNode(boot bool) {
 		if boot {
 			infos = &nodeInfos{port: 30303, peersTotal: 512, peersLight: 256}
 		} else {
-			infos = &nodeInfos{port: 30303, peersTotal: 50, peersLight: 0, gasTarget: 4.7, gasPrice: 18}
+			infos = &nodeInfos{port: 30303, peersTotal: 50, peersLight: 0, gasTarget: 7.5, gasLimit: 10, gasPrice: 1}
 		}
 	}
 	existed := err == nil
@@ -152,6 +152,10 @@ func (w *wizard) deployNode(boot bool) {
 		fmt.Printf("What gas limit should empty blocks target (MGas)? (default = %0.3f)\n", infos.gasTarget)
 		infos.gasTarget = w.readDefaultFloat(infos.gasTarget)
 
+		fmt.Println()
+		fmt.Printf("What gas limit should full blocks target (MGas)? (default = %0.3f)\n", infos.gasLimit)
+		infos.gasLimit = w.readDefaultFloat(infos.gasLimit)
+
 		fmt.Println()
 		fmt.Printf("What gas price should the signer require (GWei)? (default = %0.3f)\n", infos.gasPrice)
 		infos.gasPrice = w.readDefaultFloat(infos.gasPrice)

cmd/swarm/access_test.go

@@ -13,6 +13,9 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+// +build !windows
+
 package main
 
 import (

cmd/utils/flags.go

@@ -329,12 +329,17 @@ var (
 	MinerGasTargetFlag = cli.Uint64Flag{
 		Name:  "miner.gastarget",
 		Usage: "Target gas floor for mined blocks",
-		Value: params.GenesisGasLimit,
+		Value: eth.DefaultConfig.MinerGasFloor,
 	}
 	MinerLegacyGasTargetFlag = cli.Uint64Flag{
 		Name:  "targetgaslimit",
 		Usage: "Target gas floor for mined blocks (deprecated, use --miner.gastarget)",
-		Value: params.GenesisGasLimit,
+		Value: eth.DefaultConfig.MinerGasFloor,
+	}
+	MinerGasLimitFlag = cli.Uint64Flag{
+		Name:  "miner.gaslimit",
+		Usage: "Target gas ceiling for mined blocks",
+		Value: eth.DefaultConfig.MinerGasCeil,
 	}
 	MinerGasPriceFlag = BigFlag{
 		Name:  "miner.gasprice",
@@ -1146,6 +1151,15 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
 	if ctx.GlobalIsSet(MinerExtraDataFlag.Name) {
 		cfg.MinerExtraData = []byte(ctx.GlobalString(MinerExtraDataFlag.Name))
 	}
+	if ctx.GlobalIsSet(MinerLegacyGasTargetFlag.Name) {
+		cfg.MinerGasFloor = ctx.GlobalUint64(MinerLegacyGasTargetFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerGasTargetFlag.Name) {
+		cfg.MinerGasFloor = ctx.GlobalUint64(MinerGasTargetFlag.Name)
+	}
+	if ctx.GlobalIsSet(MinerGasLimitFlag.Name) {
+		cfg.MinerGasCeil = ctx.GlobalUint64(MinerGasLimitFlag.Name)
+	}
 	if ctx.GlobalIsSet(MinerLegacyGasPriceFlag.Name) {
 		cfg.MinerGasPrice = GlobalBig(ctx, MinerLegacyGasPriceFlag.Name)
 	}
@@ -1270,15 +1284,6 @@ func RegisterEthStatsService(stack *node.Node, url string) {
 	}
 }
 
-// SetupNetwork configures the system for either the main net or some test network.
-func SetupNetwork(ctx *cli.Context) {
-	// TODO(fjl): move target gas limit into config
-	params.TargetGasLimit = ctx.GlobalUint64(MinerLegacyGasTargetFlag.Name)
-	if ctx.GlobalIsSet(MinerGasTargetFlag.Name) {
-		params.TargetGasLimit = ctx.GlobalUint64(MinerGasTargetFlag.Name)
-	}
-}
-
 func SetupMetrics(ctx *cli.Context) {
 	if metrics.Enabled {
 		log.Info("Enabling metrics collection")

core/bench_test.go

@@ -111,7 +111,8 @@ func init() {
 func genTxRing(naccounts int) func(int, *BlockGen) {
 	from := 0
 	return func(i int, gen *BlockGen) {
-		gas := CalcGasLimit(gen.PrevBlock(i - 1))
+		block := gen.PrevBlock(i - 1)
+		gas := CalcGasLimit(block, block.GasLimit(), block.GasLimit())
 		for {
 			gas -= params.TxGas
 			if gas < params.TxGas {

core/block_validator.go

@@ -101,9 +101,11 @@ func (v *BlockValidator) ValidateState(block, parent *types.Block, statedb *stat
 	return nil
 }
 
-// CalcGasLimit computes the gas limit of the next block after parent.
+// CalcGasLimit computes the gas limit of the next block after parent. It aims
-// This is miner strategy, not consensus protocol.
+// to keep the baseline gas above the provided floor, and increase it towards the
-func CalcGasLimit(parent *types.Block) uint64 {
+// ceil if the blocks are full. If the ceil is exceeded, it will always decrease
+// the gas allowance.
+func CalcGasLimit(parent *types.Block, gasFloor, gasCeil uint64) uint64 {
 	// contrib = (parentGasUsed * 3 / 2) / 1024
 	contrib := (parent.GasUsed() + parent.GasUsed()/2) / params.GasLimitBoundDivisor
 
@@ -121,12 +123,16 @@ func CalcGasLimit(parent *types.Block) uint64 {
 	if limit < params.MinGasLimit {
 		limit = params.MinGasLimit
 	}
-	// however, if we're now below the target (TargetGasLimit) we increase the
+	// If we're outside our allowed gas range, we try to hone towards them
-	// limit as much as we can (parentGasLimit / 1024 -1)
+	if limit < gasFloor {
-	if limit < params.TargetGasLimit {
 		limit = parent.GasLimit() + decay
-		if limit > params.TargetGasLimit {
+		if limit > gasFloor {
-			limit = params.TargetGasLimit
+			limit = gasFloor
+		}
+	} else if limit > gasCeil {
+		limit = parent.GasLimit() - decay
+		if limit < gasCeil {
+			limit = gasCeil
 		}
 	}
 	return limit

core/chain_makers.go

@@ -240,7 +240,7 @@ func makeHeader(chain consensus.ChainReader, parent *types.Block, state *state.S
 			Difficulty: parent.Difficulty(),
 			UncleHash:  parent.UncleHash(),
 		}),
-		GasLimit: CalcGasLimit(parent),
+		GasLimit: CalcGasLimit(parent, parent.GasLimit(), parent.GasLimit()),
 		Number:   new(big.Int).Add(parent.Number(), common.Big1),
 		Time:     time,
 	}

eth/backend.go

@@ -173,7 +173,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
 		return nil, err
 	}
 
-	eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine, config.MinerRecommit)
+	eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine, config.MinerRecommit, config.MinerGasFloor, config.MinerGasCeil)
 	eth.miner.SetExtra(makeExtraData(config.MinerExtraData))
 
 	eth.APIBackend = &EthAPIBackend{eth, nil}

eth/config.go

@@ -48,7 +48,9 @@ var DefaultConfig = Config{
 	DatabaseCache: 768,
 	TrieCache:     256,
 	TrieTimeout:   60 * time.Minute,
-	MinerGasPrice: big.NewInt(18 * params.Shannon),
+	MinerGasFloor: 8000000,
+	MinerGasCeil:  8000000,
+	MinerGasPrice: big.NewInt(params.GWei),
 	MinerRecommit: 3 * time.Second,
 
 	TxPool: core.DefaultTxPoolConfig,
@@ -99,6 +101,8 @@ type Config struct {
 	Etherbase      common.Address `toml:",omitempty"`
 	MinerNotify    []string       `toml:",omitempty"`
 	MinerExtraData []byte         `toml:",omitempty"`
+	MinerGasFloor  uint64
+	MinerGasCeil   uint64
 	MinerGasPrice  *big.Int
 	MinerRecommit  time.Duration
 	MinerNoverify  bool

eth/gasprice/gasprice.go

@@ -29,7 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
-var maxPrice = big.NewInt(500 * params.Shannon)
+var maxPrice = big.NewInt(500 * params.GWei)
 
 type Config struct {
 	Blocks     int

eth/gen_config.go

@@ -33,6 +33,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
 		Etherbase               common.Address `toml:",omitempty"`
 		MinerNotify             []string       `toml:",omitempty"`
 		MinerExtraData          hexutil.Bytes  `toml:",omitempty"`
+		MinerGasFloor           uint64
+		MinerGasCeil            uint64
 		MinerGasPrice           *big.Int
 		MinerRecommit           time.Duration
 		MinerNoverify           bool
@@ -57,6 +59,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
 	enc.Etherbase = c.Etherbase
 	enc.MinerNotify = c.MinerNotify
 	enc.MinerExtraData = c.MinerExtraData
+	enc.MinerGasFloor = c.MinerGasFloor
+	enc.MinerGasCeil = c.MinerGasCeil
 	enc.MinerGasPrice = c.MinerGasPrice
 	enc.MinerRecommit = c.MinerRecommit
 	enc.MinerNoverify = c.MinerNoverify
@@ -85,6 +89,8 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 		Etherbase               *common.Address `toml:",omitempty"`
 		MinerNotify             []string        `toml:",omitempty"`
 		MinerExtraData          *hexutil.Bytes  `toml:",omitempty"`
+		MinerGasFloor           *uint64
+		MinerGasCeil            *uint64
 		MinerGasPrice           *big.Int
 		MinerRecommit           *time.Duration
 		MinerNoverify           *bool
@@ -140,6 +146,12 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.MinerExtraData != nil {
 		c.MinerExtraData = *dec.MinerExtraData
 	}
+	if dec.MinerGasFloor != nil {
+		c.MinerGasFloor = *dec.MinerGasFloor
+	}
+	if dec.MinerGasCeil != nil {
+		c.MinerGasCeil = *dec.MinerGasCeil
+	}
 	if dec.MinerGasPrice != nil {
 		c.MinerGasPrice = dec.MinerGasPrice
 	}

internal/ethapi/api.go

@@ -47,7 +47,7 @@ import (
 )
 
 const (
-	defaultGasPrice = 50 * params.Shannon
+	defaultGasPrice = params.GWei
 )
 
 // PublicEthereumAPI provides an API to access Ethereum related information.

miner/miner.go

@@ -52,13 +52,13 @@ type Miner struct {
 	shouldStart int32 // should start indicates whether we should start after sync
 }
 
-func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine, recommit time.Duration) *Miner {
+func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine, recommit time.Duration, gasFloor, gasCeil uint64) *Miner {
 	miner := &Miner{
 		eth:      eth,
 		mux:      mux,
 		engine:   engine,
 		exitCh:   make(chan struct{}),
-		worker:   newWorker(config, engine, eth, mux, recommit),
+		worker:   newWorker(config, engine, eth, mux, recommit, gasFloor, gasCeil),
 		canStart: 1,
 	}
 	go miner.update()

miner/stress_clique.go

@@ -206,6 +206,8 @@ func makeSealer(genesis *core.Genesis, nodes []string) (*node.Node, error) {
 			DatabaseHandles: 256,
 			TxPool:          core.DefaultTxPoolConfig,
 			GPO:             eth.DefaultConfig.GPO,
+			MinerGasFloor:   genesis.GasLimit * 9 / 10,
+			MinerGasCeil:    genesis.GasLimit * 11 / 10,
 			MinerGasPrice:   big.NewInt(1),
 			MinerRecommit:   time.Second,
 		})

miner/stress_ethash.go

@@ -186,6 +186,8 @@ func makeMiner(genesis *core.Genesis, nodes []string) (*node.Node, error) {
 			TxPool:          core.DefaultTxPoolConfig,
 			GPO:             eth.DefaultConfig.GPO,
 			Ethash:          eth.DefaultConfig.Ethash,
+			MinerGasFloor:   genesis.GasLimit * 9 / 10,
+			MinerGasCeil:    genesis.GasLimit * 11 / 10,
 			MinerGasPrice:   big.NewInt(1),
 			MinerRecommit:   time.Second,
 		})

miner/worker.go

@@ -18,7 +18,7 @@ package miner
 
 import (
 	"bytes"
-	"fmt"
+	"errors"
 	"math/big"
 	"sync"
 	"sync/atomic"
@@ -127,6 +127,9 @@ type worker struct {
 	eth    Backend
 	chain  *core.BlockChain
 
+	gasFloor uint64
+	gasCeil  uint64
+
 	// Subscriptions
 	mux          *event.TypeMux
 	txsCh        chan core.NewTxsEvent
@@ -171,13 +174,15 @@ type worker struct {
 	resubmitHook func(time.Duration, time.Duration) // Method to call upon updating resubmitting interval.
 }
 
-func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, recommit time.Duration) *worker {
+func newWorker(config *params.ChainConfig, engine consensus.Engine, eth Backend, mux *event.TypeMux, recommit time.Duration, gasFloor, gasCeil uint64) *worker {
 	worker := &worker{
 		config:             config,
 		engine:             engine,
 		eth:                eth,
 		mux:                mux,
 		chain:              eth.BlockChain(),
+		gasFloor:           gasFloor,
+		gasCeil:            gasCeil,
 		possibleUncles:     make(map[common.Hash]*types.Block),
 		unconfirmed:        newUnconfirmedBlocks(eth.BlockChain(), miningLogAtDepth),
 		pendingTasks:       make(map[common.Hash]*task),
@@ -615,13 +620,16 @@ func (w *worker) makeCurrent(parent *types.Block, header *types.Header) error {
 func (w *worker) commitUncle(env *environment, uncle *types.Header) error {
 	hash := uncle.Hash()
 	if env.uncles.Contains(hash) {
-		return fmt.Errorf("uncle not unique")
+		return errors.New("uncle not unique")
+	}
+	if env.header.ParentHash == uncle.ParentHash {
+		return errors.New("uncle is sibling")
 	}
 	if !env.ancestors.Contains(uncle.ParentHash) {
-		return fmt.Errorf("uncle's parent unknown (%x)", uncle.ParentHash[0:4])
+		return errors.New("uncle's parent unknown")
 	}
 	if env.family.Contains(hash) {
-		return fmt.Errorf("uncle already in family (%x)", hash)
+		return errors.New("uncle already included")
 	}
 	env.uncles.Add(uncle.Hash())
 	return nil
@@ -807,7 +815,7 @@ func (w *worker) commitNewWork(interrupt *int32, noempty bool) {
 	header := &types.Header{
 		ParentHash: parent.Hash(),
 		Number:     num.Add(num, common.Big1),
-		GasLimit:   core.CalcGasLimit(parent),
+		GasLimit:   core.CalcGasLimit(parent, w.gasFloor, w.gasCeil),
 		Extra:      w.extra,
 		Time:       big.NewInt(tstamp),
 	}
@@ -847,29 +855,24 @@ func (w *worker) commitNewWork(interrupt *int32, noempty bool) {
 	if w.config.DAOForkSupport && w.config.DAOForkBlock != nil && w.config.DAOForkBlock.Cmp(header.Number) == 0 {
 		misc.ApplyDAOHardFork(env.state)
 	}
-
+	// Accumulate the uncles for the current block
-	// compute uncles for the new block.
+	for hash, uncle := range w.possibleUncles {
-	var (
+		if uncle.NumberU64()+staleThreshold <= header.Number.Uint64() {
-		uncles    []*types.Header
+			delete(w.possibleUncles, hash)
-		badUncles []common.Hash
+		}
-	)
+	}
+	uncles := make([]*types.Header, 0, 2)
 	for hash, uncle := range w.possibleUncles {
 		if len(uncles) == 2 {
 			break
 		}
 		if err := w.commitUncle(env, uncle.Header()); err != nil {
-			log.Trace("Bad uncle found and will be removed", "hash", hash)
+			log.Trace("Possible uncle rejected", "hash", hash, "reason", err)
-			log.Trace(fmt.Sprint(uncle))
-
-			badUncles = append(badUncles, hash)
 		} else {
 			log.Debug("Committing new uncle to block", "hash", hash)
 			uncles = append(uncles, uncle.Header())
 		}
 	}
-	for _, hash := range badUncles {
-		delete(w.possibleUncles, hash)
-	}
 
 	if !noempty {
 		// Create an empty block based on temporary copied state for sealing in advance without waiting block

miner/worker_test.go

@@ -45,8 +45,8 @@ var (
 	testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey)
 	testBankFunds   = big.NewInt(1000000000000000000)
 
-	acc1Key, _ = crypto.GenerateKey()
+	testUserKey, _  = crypto.GenerateKey()
-	acc1Addr   = crypto.PubkeyToAddress(acc1Key.PublicKey)
+	testUserAddress = crypto.PubkeyToAddress(testUserKey.PublicKey)
 
 	// Test transactions
 	pendingTxs []*types.Transaction
@@ -62,9 +62,9 @@ func init() {
 		Period: 10,
 		Epoch:  30000,
 	}
-	tx1, _ := types.SignTx(types.NewTransaction(0, acc1Addr, big.NewInt(1000), params.TxGas, nil, nil), types.HomesteadSigner{}, testBankKey)
+	tx1, _ := types.SignTx(types.NewTransaction(0, testUserAddress, big.NewInt(1000), params.TxGas, nil, nil), types.HomesteadSigner{}, testBankKey)
 	pendingTxs = append(pendingTxs, tx1)
-	tx2, _ := types.SignTx(types.NewTransaction(1, acc1Addr, big.NewInt(1000), params.TxGas, nil, nil), types.HomesteadSigner{}, testBankKey)
+	tx2, _ := types.SignTx(types.NewTransaction(1, testUserAddress, big.NewInt(1000), params.TxGas, nil, nil), types.HomesteadSigner{}, testBankKey)
 	newTxs = append(newTxs, tx2)
 }
 
@@ -77,7 +77,7 @@ type testWorkerBackend struct {
 	uncleBlock *types.Block
 }
 
-func newTestWorkerBackend(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) *testWorkerBackend {
+func newTestWorkerBackend(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine, n int) *testWorkerBackend {
 	var (
 		db    = ethdb.NewMemDatabase()
 		gspec = core.Genesis{
@@ -92,14 +92,28 @@ func newTestWorkerBackend(t *testing.T, chainConfig *params.ChainConfig, engine
 		copy(gspec.ExtraData[32:], testBankAddress[:])
 	case *ethash.Ethash:
 	default:
-		t.Fatal("unexpect consensus engine type")
+		t.Fatalf("unexpected consensus engine type: %T", engine)
 	}
 	genesis := gspec.MustCommit(db)
 
 	chain, _ := core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{})
 	txpool := core.NewTxPool(testTxPoolConfig, chainConfig, chain)
-	blocks, _ := core.GenerateChain(chainConfig, genesis, engine, db, 1, func(i int, gen *core.BlockGen) {
+
-		gen.SetCoinbase(acc1Addr)
+	// Generate a small n-block chain and an uncle block for it
+	if n > 0 {
+		blocks, _ := core.GenerateChain(chainConfig, genesis, engine, db, n, func(i int, gen *core.BlockGen) {
+			gen.SetCoinbase(testBankAddress)
+		})
+		if _, err := chain.InsertChain(blocks); err != nil {
+			t.Fatalf("failed to insert origin chain: %v", err)
+		}
+	}
+	parent := genesis
+	if n > 0 {
+		parent = chain.GetBlockByHash(chain.CurrentBlock().ParentHash())
+	}
+	blocks, _ := core.GenerateChain(chainConfig, parent, engine, db, 1, func(i int, gen *core.BlockGen) {
+		gen.SetCoinbase(testUserAddress)
 	})
 
 	return &testWorkerBackend{
@@ -116,10 +130,10 @@ func (b *testWorkerBackend) PostChainEvents(events []interface{}) {
 	b.chain.PostChainEvents(events, nil)
 }
 
-func newTestWorker(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) (*worker, *testWorkerBackend) {
+func newTestWorker(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine, blocks int) (*worker, *testWorkerBackend) {
-	backend := newTestWorkerBackend(t, chainConfig, engine)
+	backend := newTestWorkerBackend(t, chainConfig, engine, blocks)
 	backend.txPool.AddLocals(pendingTxs)
-	w := newWorker(chainConfig, engine, backend, new(event.TypeMux), time.Second)
+	w := newWorker(chainConfig, engine, backend, new(event.TypeMux), time.Second, params.GenesisGasLimit, params.GenesisGasLimit)
 	w.setEtherbase(testBankAddress)
 	return w, backend
 }
@@ -134,24 +148,24 @@ func TestPendingStateAndBlockClique(t *testing.T) {
 func testPendingStateAndBlock(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) {
 	defer engine.Close()
 
-	w, b := newTestWorker(t, chainConfig, engine)
+	w, b := newTestWorker(t, chainConfig, engine, 0)
 	defer w.close()
 
 	// Ensure snapshot has been updated.
 	time.Sleep(100 * time.Millisecond)
 	block, state := w.pending()
 	if block.NumberU64() != 1 {
-		t.Errorf("block number mismatch, has %d, want %d", block.NumberU64(), 1)
+		t.Errorf("block number mismatch: have %d, want %d", block.NumberU64(), 1)
 	}
-	if balance := state.GetBalance(acc1Addr); balance.Cmp(big.NewInt(1000)) != 0 {
+	if balance := state.GetBalance(testUserAddress); balance.Cmp(big.NewInt(1000)) != 0 {
-		t.Errorf("account balance mismatch, has %d, want %d", balance, 1000)
+		t.Errorf("account balance mismatch: have %d, want %d", balance, 1000)
 	}
 	b.txPool.AddLocals(newTxs)
 	// Ensure the new tx events has been processed
 	time.Sleep(100 * time.Millisecond)
 	block, state = w.pending()
-	if balance := state.GetBalance(acc1Addr); balance.Cmp(big.NewInt(2000)) != 0 {
+	if balance := state.GetBalance(testUserAddress); balance.Cmp(big.NewInt(2000)) != 0 {
-		t.Errorf("account balance mismatch, has %d, want %d", balance, 2000)
+		t.Errorf("account balance mismatch: have %d, want %d", balance, 2000)
 	}
 }
 
@@ -165,7 +179,7 @@ func TestEmptyWorkClique(t *testing.T) {
 func testEmptyWork(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) {
 	defer engine.Close()
 
-	w, _ := newTestWorker(t, chainConfig, engine)
+	w, _ := newTestWorker(t, chainConfig, engine, 0)
 	defer w.close()
 
 	var (
@@ -179,10 +193,10 @@ func testEmptyWork(t *testing.T, chainConfig *params.ChainConfig, engine consens
 			receiptLen, balance = 1, big.NewInt(1000)
 		}
 		if len(task.receipts) != receiptLen {
-			t.Errorf("receipt number mismatch has %d, want %d", len(task.receipts), receiptLen)
+			t.Errorf("receipt number mismatch: have %d, want %d", len(task.receipts), receiptLen)
 		}
-		if task.state.GetBalance(acc1Addr).Cmp(balance) != 0 {
+		if task.state.GetBalance(testUserAddress).Cmp(balance) != 0 {
-			t.Errorf("account balance mismatch has %d, want %d", task.state.GetBalance(acc1Addr), balance)
+			t.Errorf("account balance mismatch: have %d, want %d", task.state.GetBalance(testUserAddress), balance)
 		}
 	}
 
@@ -219,19 +233,19 @@ func TestStreamUncleBlock(t *testing.T) {
 	ethash := ethash.NewFaker()
 	defer ethash.Close()
 
-	w, b := newTestWorker(t, ethashChainConfig, ethash)
+	w, b := newTestWorker(t, ethashChainConfig, ethash, 1)
 	defer w.close()
 
 	var taskCh = make(chan struct{})
 
 	taskIndex := 0
 	w.newTaskHook = func(task *task) {
-		if task.block.NumberU64() == 1 {
+		if task.block.NumberU64() == 2 {
 			if taskIndex == 2 {
-				has := task.block.Header().UncleHash
+				have := task.block.Header().UncleHash
 				want := types.CalcUncleHash([]*types.Header{b.uncleBlock.Header()})
-				if has != want {
+				if have != want {
-					t.Errorf("uncle hash mismatch, has %s, want %s", has.Hex(), want.Hex())
+					t.Errorf("uncle hash mismatch: have %s, want %s", have.Hex(), want.Hex())
 				}
 			}
 			taskCh <- struct{}{}
@@ -248,12 +262,12 @@ func TestStreamUncleBlock(t *testing.T) {
 	// Ensure worker has finished initialization
 	for {
 		b := w.pendingBlock()
-		if b != nil && b.NumberU64() == 1 {
+		if b != nil && b.NumberU64() == 2 {
 			break
 		}
 	}
-
 	w.start()
+
 	// Ignore the first two works
 	for i := 0; i < 2; i += 1 {
 		select {
@@ -282,7 +296,7 @@ func TestRegenerateMiningBlockClique(t *testing.T) {
 func testRegenerateMiningBlock(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) {
 	defer engine.Close()
 
-	w, b := newTestWorker(t, chainConfig, engine)
+	w, b := newTestWorker(t, chainConfig, engine, 0)
 	defer w.close()
 
 	var taskCh = make(chan struct{})
@@ -293,10 +307,10 @@ func testRegenerateMiningBlock(t *testing.T, chainConfig *params.ChainConfig, en
 			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)
+					t.Errorf("receipt number mismatch: have %d, want %d", len(task.receipts), receiptLen)
 				}
-				if task.state.GetBalance(acc1Addr).Cmp(balance) != 0 {
+				if task.state.GetBalance(testUserAddress).Cmp(balance) != 0 {
-					t.Errorf("account balance mismatch has %d, want %d", task.state.GetBalance(acc1Addr), balance)
+					t.Errorf("account balance mismatch: have %d, want %d", task.state.GetBalance(testUserAddress), balance)
 				}
 			}
 			taskCh <- struct{}{}
@@ -347,7 +361,7 @@ func TestAdjustIntervalClique(t *testing.T) {
 func testAdjustInterval(t *testing.T, chainConfig *params.ChainConfig, engine consensus.Engine) {
 	defer engine.Close()
 
-	w, _ := newTestWorker(t, chainConfig, engine)
+	w, _ := newTestWorker(t, chainConfig, engine, 0)
 	defer w.close()
 
 	w.skipSealHook = func(task *task) bool {
@@ -387,10 +401,10 @@ func testAdjustInterval(t *testing.T, chainConfig *params.ChainConfig, engine co
 
 		// Check interval
 		if minInterval != wantMinInterval {
-			t.Errorf("resubmit min interval mismatch want %s has %s", wantMinInterval, minInterval)
+			t.Errorf("resubmit min interval mismatch: have %v, want %v ", minInterval, wantMinInterval)
 		}
 		if recommitInterval != wantRecommitInterval {
-			t.Errorf("resubmit interval mismatch want %s has %s", wantRecommitInterval, recommitInterval)
+			t.Errorf("resubmit interval mismatch: have %v, want %v", recommitInterval, wantRecommitInterval)
 		}
 		result = append(result, float64(recommitInterval.Nanoseconds()))
 		index += 1

params/denomination.go

@@ -17,18 +17,12 @@
 package params
 
 // These are the multipliers for ether denominations.
-// Example: To get the wei value of an amount in 'douglas', use
+// Example: To get the wei value of an amount in 'gwei', use
 //
-//    new(big.Int).Mul(value, big.NewInt(params.Douglas))
+//    new(big.Int).Mul(value, big.NewInt(params.GWei))
 //
 const (
 	Wei   = 1
-	Ada      = 1e3
+	GWei  = 1e9
-	Babbage  = 1e6
-	Shannon  = 1e9
-	Szabo    = 1e12
-	Finney   = 1e15
 	Ether = 1e18
-	Einstein = 1e21
-	Douglas  = 1e42
 )

params/protocol_params.go

@@ -18,10 +18,6 @@ package params
 
 import "math/big"
 
-var (
-	TargetGasLimit = GenesisGasLimit // The artificial target
-)
-
 const (
 	GasLimitBoundDivisor uint64 = 1024    // The bound divisor of the gas limit, used in update calculations.
 	MinGasLimit          uint64 = 5000    // Minimum the gas limit may ever be.

whisper/whisperv5/whisper.go

@@ -717,7 +717,7 @@ func (w *Whisper) expire() {
 				w.stats.messagesCleared++
 				w.stats.memoryCleared += sz
 				w.stats.memoryUsed -= sz
-				return true
+				return false
 			})
 			w.expirations[expiry].Clear()
 			delete(w.expirations, expiry)

whisper/whisperv5/whisper_test.go

@@ -487,8 +487,14 @@ func TestExpiry(t *testing.T) {
 	if err != nil {
 		t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
 	}
-
 	params.TTL = 1
+
+	messagesCount := 5
+
+	// Send a few messages one after another. Due to low PoW and expiration buckets
+	// with one second resolution, it covers a case when there are multiple items
+	// in a single expiration bucket.
+	for i := 0; i < messagesCount; i++ {
 		msg, err := NewSentMessage(params)
 		if err != nil {
 			t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
@@ -502,12 +508,13 @@ func TestExpiry(t *testing.T) {
 		if err != nil {
 			t.Fatalf("failed to send envelope with seed %d: %s.", seed, err)
 		}
+	}
 
 	// wait till received or timeout
 	var received, expired bool
 	for j := 0; j < 20; j++ {
 		time.Sleep(100 * time.Millisecond)
-		if len(w.Envelopes()) > 0 {
+		if len(w.Envelopes()) == messagesCount {
 			received = true
 			break
 		}

whisper/whisperv6/whisper.go

@@ -900,7 +900,7 @@ func (whisper *Whisper) expire() {
 				whisper.stats.messagesCleared++
 				whisper.stats.memoryCleared += sz
 				whisper.stats.memoryUsed -= sz
-				return true
+				return false
 			})
 			whisper.expirations[expiry].Clear()
 			delete(whisper.expirations, expiry)

whisper/whisperv6/whisper_test.go

@@ -465,8 +465,14 @@ func TestExpiry(t *testing.T) {
 	if err != nil {
 		t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)
 	}
-
 	params.TTL = 1
+
+	messagesCount := 5
+
+	// Send a few messages one after another. Due to low PoW and expiration buckets
+	// with one second resolution, it covers a case when there are multiple items
+	// in a single expiration bucket.
+	for i := 0; i < messagesCount; i++ {
 		msg, err := NewSentMessage(params)
 		if err != nil {
 			t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
@@ -480,12 +486,13 @@ func TestExpiry(t *testing.T) {
 		if err != nil {
 			t.Fatalf("failed to send envelope with seed %d: %s.", seed, err)
 		}
+	}
 
 	// wait till received or timeout
 	var received, expired bool
 	for j := 0; j < 20; j++ {
 		time.Sleep(100 * time.Millisecond)
-		if len(w.Envelopes()) > 0 {
+		if len(w.Envelopes()) == messagesCount {
 			received = true
 			break
 		}