1// Copyright 2021 The go-ethereum Authors 2// This file is part of the go-ethereum library. 3// 4// The go-ethereum library is free software: you can redistribute it and/or modify 5// it under the terms of the GNU Lesser General Public License as published by 6// the Free Software Foundation, either version 3 of the License, or 7// (at your option) any later version. 8// 9// The go-ethereum library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU Lesser General Public License for more details. 13// 14// You should have received a copy of the GNU Lesser General Public License 15// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17package vm 18 19import ( 20 "math/big" 21 "time" 22 23 "github.com/ethereum/go-ethereum/common" 24) 25 26// EVMLogger is used to collect execution traces from an EVM transaction 27// execution. CaptureState is called for each step of the VM with the 28// current VM state. 29// Note that reference types are actual VM data structures; make copies 30// if you need to retain them beyond the current call. 31type EVMLogger interface { 32 CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) 33 CaptureState(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) 34 CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) 35 CaptureExit(output []byte, gasUsed uint64, err error) 36 CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) 37 CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) 38} 39