Official Go implementation of the Ethereum protocol
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go-ethereum/core/vm/runtime/runtime.go

190 lines
5.3 KiB

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package runtime
import (
"math"
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"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/params"
)
// Config is a basic type specifying certain configuration flags for running
// the EVM.
type Config struct {
ChainConfig *params.ChainConfig
Difficulty *big.Int
Origin common.Address
Coinbase common.Address
BlockNumber *big.Int
Time *big.Int
GasLimit uint64
GasPrice *big.Int
Value *big.Int
Debug bool
EVMConfig vm.Config
State *state.StateDB
GetHashFn func(n uint64) common.Hash
}
// sets defaults on the config
func setDefaults(cfg *Config) {
if cfg.ChainConfig == nil {
cfg.ChainConfig = &params.ChainConfig{
core/vm: less allocations for various call variants (#21222) * core/vm/runtime/tests: add more benchmarks * core/vm: initial work on improving alloc count for calls to precompiles name old time/op new time/op delta SimpleLoop/identity-precompile-10M-6 117ms ±75% 43ms ± 1% -63.09% (p=0.008 n=5+5) SimpleLoop/loop-10M-6 79.6ms ± 4% 70.5ms ± 1% -11.42% (p=0.008 n=5+5) name old alloc/op new alloc/op delta SimpleLoop/identity-precompile-10M-6 24.4MB ± 0% 4.9MB ± 0% -79.94% (p=0.008 n=5+5) SimpleLoop/loop-10M-6 13.2kB ± 0% 13.2kB ± 0% ~ (p=0.357 n=5+5) name old allocs/op new allocs/op delta SimpleLoop/identity-precompile-10M-6 382k ± 0% 153k ± 0% -59.99% (p=0.000 n=5+4) SimpleLoop/loop-10M-6 40.0 ± 0% 40.0 ± 0% ~ (all equal) * core/vm: don't allocate big.int for touch name old time/op new time/op delta SimpleLoop/identity-precompile-10M-6 43.3ms ± 1% 42.4ms ± 7% ~ (p=0.151 n=5+5) SimpleLoop/loop-10M-6 70.5ms ± 1% 76.7ms ± 1% +8.67% (p=0.008 n=5+5) name old alloc/op new alloc/op delta SimpleLoop/identity-precompile-10M-6 4.90MB ± 0% 2.46MB ± 0% -49.83% (p=0.008 n=5+5) SimpleLoop/loop-10M-6 13.2kB ± 0% 13.2kB ± 1% ~ (p=0.571 n=5+5) name old allocs/op new allocs/op delta SimpleLoop/identity-precompile-10M-6 153k ± 0% 76k ± 0% -49.98% (p=0.029 n=4+4) SimpleLoop/loop-10M-6 40.0 ± 0% 40.0 ± 0% ~ (all equal) * core/vm: reduce allocs in staticcall name old time/op new time/op delta SimpleLoop/identity-precompile-10M-6 42.4ms ± 7% 37.5ms ± 6% -11.68% (p=0.008 n=5+5) SimpleLoop/loop-10M-6 76.7ms ± 1% 69.1ms ± 1% -9.82% (p=0.008 n=5+5) name old alloc/op new alloc/op delta SimpleLoop/identity-precompile-10M-6 2.46MB ± 0% 0.02MB ± 0% -99.35% (p=0.008 n=5+5) SimpleLoop/loop-10M-6 13.2kB ± 1% 13.2kB ± 0% ~ (p=0.143 n=5+5) name old allocs/op new allocs/op delta SimpleLoop/identity-precompile-10M-6 76.4k ± 0% 0.1k ± 0% ~ (p=0.079 n=4+5) SimpleLoop/loop-10M-6 40.0 ± 0% 40.0 ± 0% ~ (all equal) * trie: better use of hasher keccakState * core/state/statedb: reduce allocations in getDeletedStateObject * core/vm: reduce allocations in all call derivates * core/vm: reduce allocations in call variants - Make returnstack `uint32` - Use a `sync.Pool` of `stack`s * core/vm: fix tests * core/vm: goimports * core/vm: tracer fix + staticcall gas fix * core/vm: add back snapshot to staticcall * core/vm: review concerns + make returnstack pooled + enable returndata in traces * core/vm: fix some test tracer method signatures * core/vm: run gencodec, minor comment polish Co-authored-by: Péter Szilágyi <peterke@gmail.com>
4 years ago
ChainID: big.NewInt(1),
HomesteadBlock: new(big.Int),
DAOForkBlock: new(big.Int),
DAOForkSupport: false,
EIP150Block: new(big.Int),
EIP150Hash: common.Hash{},
EIP155Block: new(big.Int),
EIP158Block: new(big.Int),
ByzantiumBlock: new(big.Int),
ConstantinopleBlock: new(big.Int),
PetersburgBlock: new(big.Int),
IstanbulBlock: new(big.Int),
MuirGlacierBlock: new(big.Int),
BerlinBlock: new(big.Int),
YoloV3Block: nil,
}
}
if cfg.Difficulty == nil {
cfg.Difficulty = new(big.Int)
}
if cfg.Time == nil {
cfg.Time = big.NewInt(time.Now().Unix())
}
if cfg.GasLimit == 0 {
cfg.GasLimit = math.MaxUint64
}
if cfg.GasPrice == nil {
cfg.GasPrice = new(big.Int)
}
if cfg.Value == nil {
cfg.Value = new(big.Int)
}
if cfg.BlockNumber == nil {
cfg.BlockNumber = new(big.Int)
}
if cfg.GetHashFn == nil {
cfg.GetHashFn = func(n uint64) common.Hash {
return common.BytesToHash(crypto.Keccak256([]byte(new(big.Int).SetUint64(n).String())))
}
}
}
// Execute executes the code using the input as call data during the execution.
// It returns the EVM's return value, the new state and an error if it failed.
//
// Execute sets up an in-memory, temporary, environment for the execution of
// the given code. It makes sure that it's restored to its original state afterwards.
func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
if cfg == nil {
cfg = new(Config)
}
setDefaults(cfg)
if cfg.State == nil {
cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
}
var (
address = common.BytesToAddress([]byte("contract"))
vmenv = NewEnv(cfg)
sender = vm.AccountRef(cfg.Origin)
)
if cfg.ChainConfig.IsBerlin(vmenv.Context.BlockNumber) {
cfg.State.PrepareAccessList(cfg.Origin, &address, vmenv.ActivePrecompiles(), nil)
}
cfg.State.CreateAccount(address)
// set the receiver's (the executing contract) code for execution.
cfg.State.SetCode(address, code)
// Call the code with the given configuration.
ret, _, err := vmenv.Call(
sender,
common.BytesToAddress([]byte("contract")),
input,
cfg.GasLimit,
cfg.Value,
)
return ret, cfg.State, err
}
// Create executes the code using the EVM create method
func Create(input []byte, cfg *Config) ([]byte, common.Address, uint64, error) {
if cfg == nil {
cfg = new(Config)
}
setDefaults(cfg)
if cfg.State == nil {
cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
}
var (
vmenv = NewEnv(cfg)
sender = vm.AccountRef(cfg.Origin)
)
if cfg.ChainConfig.IsBerlin(vmenv.Context.BlockNumber) {
cfg.State.PrepareAccessList(cfg.Origin, nil, vmenv.ActivePrecompiles(), nil)
}
// Call the code with the given configuration.
code, address, leftOverGas, err := vmenv.Create(
sender,
input,
cfg.GasLimit,
cfg.Value,
)
return code, address, leftOverGas, err
}
// Call executes the code given by the contract's address. It will return the
// EVM's return value or an error if it failed.
//
// Call, unlike Execute, requires a config and also requires the State field to
// be set.
func Call(address common.Address, input []byte, cfg *Config) ([]byte, uint64, error) {
setDefaults(cfg)
vmenv := NewEnv(cfg)
sender := cfg.State.GetOrNewStateObject(cfg.Origin)
statedb := cfg.State
if cfg.ChainConfig.IsBerlin(vmenv.Context.BlockNumber) {
statedb.PrepareAccessList(cfg.Origin, &address, vmenv.ActivePrecompiles(), nil)
}
// Call the code with the given configuration.
ret, leftOverGas, err := vmenv.Call(
sender,
address,
input,
cfg.GasLimit,
cfg.Value,
)
return ret, leftOverGas, err
}