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authorJeffrey Wilcke <jeffrey@ethereum.org>2016-03-02 06:32:43 +0800
committerJeffrey Wilcke <geffobscura@gmail.com>2016-04-01 07:01:10 +0800
commitf0cbebb19f3137ee3ba0e66dadd1b5b9dbf98b1c (patch)
tree02e31a0e31040980e30e3a835ff9eba73e419439 /cmd/utils/flags.go
parent10d3466c934bd425a8c941270749a652a588527d (diff)
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core: added basic chain configuration
Added chain configuration options and write out during genesis database insertion. If no "config" was found, nothing is written to the database. Configurations are written on a per genesis base. This means that any chain (which is identified by it's genesis hash) can have their own chain settings.
Diffstat (limited to 'cmd/utils/flags.go')
-rw-r--r--cmd/utils/flags.go72
1 files changed, 53 insertions, 19 deletions
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index a00466d0a..3f54b40ca 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -34,7 +34,6 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
- "github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb"
@@ -173,6 +172,11 @@ var (
Name: "minergpus",
Usage: "List of GPUs to use for mining (e.g. '0,1' will use the first two GPUs found)",
}
+ TargetGasLimitFlag = cli.StringFlag{
+ Name: "targetgaslimit",
+ Usage: "Target gas limit sets the artificial target gas floor for the blocks to mine",
+ Value: params.GenesisGasLimit.String(),
+ }
AutoDAGFlag = cli.BoolFlag{
Name: "autodag",
Usage: "Enable automatic DAG pregeneration",
@@ -656,6 +660,7 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.
accman := MakeAccountManager(ctx)
ethConf := &eth.Config{
+ ChainConfig: MustMakeChainConfig(ctx),
Genesis: MakeGenesisBlock(ctx),
FastSync: ctx.GlobalBool(FastSyncFlag.Name),
BlockChainVersion: ctx.GlobalInt(BlockchainVersionFlag.Name),
@@ -701,8 +706,6 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.
ethConf.Genesis = core.TestNetGenesisBlock()
}
state.StartingNonce = 1048576 // (2**20)
- // overwrite homestead block
- params.HomesteadBlock = params.TestNetHomesteadBlock
case ctx.GlobalBool(DevModeFlag.Name):
// Override the base network stack configs
@@ -758,25 +761,56 @@ func SetupNetwork(ctx *cli.Context) {
core.BlockReward = big.NewInt(1.5e+18)
core.ExpDiffPeriod = big.NewInt(math.MaxInt64)
}
+ params.TargetGasLimit = common.String2Big(ctx.GlobalString(TargetGasLimitFlag.Name))
}
-// SetupVM configured the VM package's global settings
-func SetupVM(ctx *cli.Context) {
- vm.EnableJit = ctx.GlobalBool(VMEnableJitFlag.Name)
- vm.ForceJit = ctx.GlobalBool(VMForceJitFlag.Name)
- vm.SetJITCacheSize(ctx.GlobalInt(VMJitCacheFlag.Name))
+// MustMakeChainConfig reads the chain configuration from the given database.
+func MustMakeChainConfig(ctx *cli.Context) *core.ChainConfig {
+ var (
+ db = MakeChainDatabase(ctx)
+ genesis = core.GetBlock(db, core.GetCanonicalHash(db, 0))
+ )
+ defer db.Close()
+
+ chainConfig, err := core.GetChainConfig(db, genesis.Hash())
+ if err != nil {
+ if err != core.ChainConfigNotFoundErr {
+ Fatalf("Could not make chain configuration: %v", err)
+ }
+ var homesteadBlockNo *big.Int
+ if ctx.GlobalBool(TestNetFlag.Name) {
+ homesteadBlockNo = params.TestNetHomesteadBlock
+ } else {
+ homesteadBlockNo = params.MainNetHomesteadBlock
+ }
+
+ chainConfig = &core.ChainConfig{
+ HomesteadBlock: homesteadBlockNo,
+ }
+ }
+ return chainConfig
}
-// MakeChain creates a chain manager from set command line flags.
-func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
- datadir := MustMakeDataDir(ctx)
- cache := ctx.GlobalInt(CacheFlag.Name)
- handles := MakeDatabaseHandles()
+// MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails.
+func MakeChainDatabase(ctx *cli.Context) ethdb.Database {
+ var (
+ datadir = MustMakeDataDir(ctx)
+ cache = ctx.GlobalInt(CacheFlag.Name)
+ handles = MakeDatabaseHandles()
+ )
- var err error
- if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache, handles); err != nil {
+ chainDb, err := ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache, handles)
+ if err != nil {
Fatalf("Could not open database: %v", err)
}
+ return chainDb
+}
+
+// MakeChain creates a chain manager from set command line flags.
+func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
+ var err error
+ chainDb = MakeChainDatabase(ctx)
+
if ctx.GlobalBool(OlympicFlag.Name) {
_, err := core.WriteTestNetGenesisBlock(chainDb)
if err != nil {
@@ -784,10 +818,10 @@ func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database
}
}
- eventMux := new(event.TypeMux)
- pow := ethash.New()
- //genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
- chain, err = core.NewBlockChain(chainDb, pow, eventMux)
+ chainConfig := MustMakeChainConfig(ctx)
+
+ var eventMux event.TypeMux
+ chain, err = core.NewBlockChain(chainDb, chainConfig, ethash.New(), &eventMux)
if err != nil {
Fatalf("Could not start chainmanager: %v", err)
}