core/state: avoid unecessary copy in Commit

core/state/statedb.go

@@ -23,6 +23,7 @@ import (
 	"sort"
 	"sync"
 
+	"bytes"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -617,9 +618,8 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (root common.Hash, err error)
 		if account.Root != emptyState {
 			s.db.TrieDB().Reference(account.Root, parent)
 		}
-		code := common.BytesToHash(account.CodeHash)
+		if !bytes.Equal(emptyCodeHash, account.CodeHash) {
-		if code != emptyCode {
+			s.db.TrieDB().Reference(common.BytesToHash(account.CodeHash), parent)
-			s.db.TrieDB().Reference(code, parent)
 		}
 		return nil
 	})

eth/api.go

@@ -369,7 +369,7 @@ type storageEntry struct {
 	Key   *common.Hash `json:"key"`
 	Value common.Hash  `json:"value"`
 }
-
+/*
 // StorageRangeAt returns the storage at the given block height and transaction index.
 func (api *PrivateDebugAPI) StorageRangeAt(ctx context.Context, blockHash common.Hash, txIndex int, contractAddress common.Address, keyStart hexutil.Bytes, maxResult int) (StorageRangeResult, error) {
 	_, _, statedb, err := api.computeTxEnv(blockHash, txIndex, 0)
@@ -405,7 +405,7 @@ func storageRangeAt(st state.Trie, start []byte, maxResult int) (StorageRangeRes
 	}
 	return result, nil
 }
-
+*/
 // GetModifiedAccountsByumber returns all accounts that have changed between the
 // two blocks specified. A change is defined as a difference in nonce, balance,
 // code hash, or storage hash.

eth/api_backend.go

@@ -22,19 +22,19 @@ import (
 
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/bloombits"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/gasprice"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/common/math"
 )
 
 // EthAPIBackend implements ethapi.Backend for full nodes
@@ -133,7 +133,7 @@ func (b *EthAPIBackend) GetEVM(ctx context.Context, msg core.Message, state *sta
 	vmError := func() error { return nil }
 
 	context := core.NewEVMContext(msg, header, b.eth.BlockChain(), nil)
-	return vm.NewEVM(context, state, b.eth.chainConfig, vmCfg), vmError, nil
+	return vm.NewEVM(context, state, b.eth.chainConfig, &vmCfg, &vm.BlockContext{} ), vmError, nil
 }
 
 func (b *EthAPIBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {

eth/api_tracer.go

@@ -17,27 +17,18 @@
 package eth
 
 import (
-	"bytes"
-	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
-	"runtime"
-	"sync"
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/core"
+
-	"github.com/ethereum/go-ethereum/core/rawdb"
+
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
-	"github.com/ethereum/go-ethereum/eth/tracers"
-	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/trie"
 )
 
@@ -89,7 +80,7 @@ type txTraceTask struct {
 	statedb *state.StateDB // Intermediate state prepped for tracing
 	index   int            // Transaction offset in the block
 }
-
+/*
 // TraceChain returns the structured logs created during the execution of EVM
 // between two blocks (excluding start) and returns them as a JSON object.
 func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.BlockNumber, config *TraceConfig) (*rpc.Subscription, error) {
@@ -125,6 +116,7 @@ func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.Block
 // traceChain configures a new tracer according to the provided configuration, and
 // executes all the transactions contained within. The return value will be one item
 // per transaction, dependent on the requestd tracer.
+
 func (api *PrivateDebugAPI) traceChain(ctx context.Context, start, end *types.Block, config *TraceConfig) (*rpc.Subscription, error) {
 	// Tracing a chain is a **long** operation, only do with subscriptions
 	notifier, supported := rpc.NotifierFromContext(ctx)
@@ -386,6 +378,7 @@ func (api *PrivateDebugAPI) TraceBlockFromFile(ctx context.Context, file string,
 // traceBlock configures a new tracer according to the provided configuration, and
 // executes all the transactions contained within. The return value will be one item
 // per transaction, dependent on the requestd tracer.
+/*
 func (api *PrivateDebugAPI) traceBlock(ctx context.Context, block *types.Block, config *TraceConfig) ([]*txTraceResult, error) {
 	// Create the parent state database
 	if err := api.eth.engine.VerifyHeader(api.eth.blockchain, block.Header(), true); err != nil {
@@ -463,7 +456,7 @@ func (api *PrivateDebugAPI) traceBlock(ctx context.Context, block *types.Block,
 	}
 	return results, nil
 }
-
+*/
 // computeStateDB retrieves the state database associated with a certain block.
 // If no state is locally available for the given block, a number of blocks are
 // attempted to be reexecuted to generate the desired state.
@@ -529,7 +522,7 @@ func (api *PrivateDebugAPI) computeStateDB(block *types.Block, reexec uint64) (*
 	log.Info("Historical state regenerated", "block", block.NumberU64(), "elapsed", time.Since(start), "size", database.TrieDB().Size())
 	return statedb, nil
 }
-
+/*
 // TraceTransaction returns the structured logs created during the execution of EVM
 // and returns them as a JSON object.
 func (api *PrivateDebugAPI) TraceTransaction(ctx context.Context, hash common.Hash, config *TraceConfig) (interface{}, error) {
@@ -646,3 +639,4 @@ func (api *PrivateDebugAPI) computeTxEnv(blockHash common.Hash, txIndex int, ree
 	}
 	return nil, vm.Context{}, nil, fmt.Errorf("tx index %d out of range for block %x", txIndex, blockHash)
 }
+*/

les/api_backend.go

@@ -105,7 +105,7 @@ func (b *LesApiBackend) GetTd(hash common.Hash) *big.Int {
 func (b *LesApiBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmCfg vm.Config) (*vm.EVM, func() error, error) {
 	state.SetBalance(msg.From(), math.MaxBig256)
 	context := core.NewEVMContext(msg, header, b.eth.blockchain, nil)
-	return vm.NewEVM(context, state, b.eth.chainConfig, vmCfg), state.Error, nil
+	return vm.NewEVM(context, state, b.eth.chainConfig, &vmCfg, &vm.BlockContext{}), state.Error, nil
 }
 
 func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {

miner/worker.go

@@ -30,7 +30,6 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
@@ -614,6 +613,9 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
 }
 
 func (env *Work) commitTransaction(tx *types.Transaction, bc *core.BlockChain, coinbase common.Address, gp *core.GasPool) (error, []*types.Log) {
+
+	return fmt.Errorf("Mining disabled"), nil
+	/*
 	snap := env.state.Snapshot()
 
 	receipt, _, err := core.ApplyTransaction(env.config, bc, &coinbase, gp, env.state, env.header, tx, &env.header.GasUsed, vm.Config{})
@@ -625,4 +627,5 @@ func (env *Work) commitTransaction(tx *types.Transaction, bc *core.BlockChain, c
 	env.receipts = append(env.receipts, receipt)
 
 	return nil, receipt.Logs
+	*/
 }