mirror of
https://github.com/ethereum/go-ethereum.git
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e3d61e6db0
This pull request refactors the EVM constructor by removing the TxContext parameter. The EVM object is frequently overused. Ideally, only a single EVM instance should be created and reused throughout the entire state transition of a block, with the transaction context switched as needed by calling evm.SetTxContext. Unfortunately, in some parts of the code, the EVM object is repeatedly created, resulting in unnecessary complexity. This pull request is the first step towards gradually improving and simplifying this setup. --------- Co-authored-by: Martin Holst Swende <martin@swende.se>
116 lines
3.7 KiB
Go
116 lines
3.7 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package tracers
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import (
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth/tracers/logger"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/tests"
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)
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func BenchmarkTransactionTrace(b *testing.B) {
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key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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from := crypto.PubkeyToAddress(key.PublicKey)
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gas := uint64(1000000) // 1M gas
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to := common.HexToAddress("0x00000000000000000000000000000000deadbeef")
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signer := types.LatestSignerForChainID(big.NewInt(1337))
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tx, err := types.SignNewTx(key, signer,
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&types.LegacyTx{
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Nonce: 1,
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GasPrice: big.NewInt(500),
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Gas: gas,
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To: &to,
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})
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if err != nil {
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b.Fatal(err)
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}
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txContext := vm.TxContext{
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Origin: from,
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GasPrice: tx.GasPrice(),
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}
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context := vm.BlockContext{
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CanTransfer: core.CanTransfer,
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Transfer: core.Transfer,
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Coinbase: common.Address{},
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BlockNumber: new(big.Int).SetUint64(uint64(5)),
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Time: 5,
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Difficulty: big.NewInt(0xffffffff),
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GasLimit: gas,
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BaseFee: big.NewInt(8),
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}
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alloc := types.GenesisAlloc{}
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// The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns
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// the address
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loop := []byte{
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byte(vm.JUMPDEST), // [ count ]
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byte(vm.PUSH1), 0, // jumpdestination
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byte(vm.JUMP),
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}
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alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = types.Account{
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Nonce: 1,
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Code: loop,
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Balance: big.NewInt(1),
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}
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alloc[from] = types.Account{
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Nonce: 1,
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Code: []byte{},
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Balance: big.NewInt(500000000000000),
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}
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state := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false, rawdb.HashScheme)
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defer state.Close()
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// Create the tracer, the EVM environment and run it
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tracer := logger.NewStructLogger(&logger.Config{
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Debug: false,
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//DisableStorage: true,
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//EnableMemory: false,
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//EnableReturnData: false,
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})
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evm := vm.NewEVM(context, state.StateDB, params.AllEthashProtocolChanges, vm.Config{Tracer: tracer.Hooks()})
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evm.SetTxContext(txContext)
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msg, err := core.TransactionToMessage(tx, signer, context.BaseFee)
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if err != nil {
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b.Fatalf("failed to prepare transaction for tracing: %v", err)
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}
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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snap := state.StateDB.Snapshot()
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tracer.OnTxStart(evm.GetVMContext(), tx, msg.From)
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st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
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res, err := st.TransitionDb()
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if err != nil {
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b.Fatal(err)
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}
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tracer.OnTxEnd(&types.Receipt{GasUsed: res.UsedGas}, nil)
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state.StateDB.RevertToSnapshot(snap)
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if have, want := len(tracer.StructLogs()), 244752; have != want {
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b.Fatalf("trace wrong, want %d steps, have %d", want, have)
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}
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tracer.Reset()
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}
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}
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