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

944 lines
31 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 (
"fmt"
"math/big"
"os"
"strings"
"testing"
"time"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/asm"
"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/eth/tracers/logger"
"github.com/ethereum/go-ethereum/params"
// force-load js tracers to trigger registration
_ "github.com/ethereum/go-ethereum/eth/tracers/js"
)
func TestDefaults(t *testing.T) {
cfg := new(Config)
setDefaults(cfg)
if cfg.Difficulty == nil {
t.Error("expected difficulty to be non nil")
}
if cfg.Time == nil {
t.Error("expected time to be non nil")
}
if cfg.GasLimit == 0 {
t.Error("didn't expect gaslimit to be zero")
}
if cfg.GasPrice == nil {
t.Error("expected time to be non nil")
}
if cfg.Value == nil {
t.Error("expected time to be non nil")
}
if cfg.GetHashFn == nil {
t.Error("expected time to be non nil")
}
if cfg.BlockNumber == nil {
t.Error("expected block number to be non nil")
}
}
func TestEVM(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("crashed with: %v", r)
}
}()
Execute([]byte{
byte(vm.DIFFICULTY),
byte(vm.TIMESTAMP),
byte(vm.GASLIMIT),
byte(vm.PUSH1),
byte(vm.ORIGIN),
byte(vm.BLOCKHASH),
byte(vm.COINBASE),
}, nil, nil)
}
func TestExecute(t *testing.T) {
ret, _, err := Execute([]byte{
byte(vm.PUSH1), 10,
byte(vm.PUSH1), 0,
byte(vm.MSTORE),
byte(vm.PUSH1), 32,
byte(vm.PUSH1), 0,
byte(vm.RETURN),
}, nil, nil)
if err != nil {
t.Fatal("didn't expect error", err)
}
common: move big integer math to common/math (#3699) * common: remove CurrencyToString Move denomination values to params instead. * common: delete dead code * common: move big integer operations to common/math This commit consolidates all big integer operations into common/math and adds tests and documentation. There should be no change in semantics for BigPow, BigMin, BigMax, S256, U256, Exp and their behaviour is now locked in by tests. The BigD, BytesToBig and Bytes2Big functions don't provide additional value, all uses are replaced by new(big.Int).SetBytes(). BigToBytes is now called PaddedBigBytes, its minimum output size parameter is now specified as the number of bytes instead of bits. The single use of this function is in the EVM's MSTORE instruction. Big and String2Big are replaced by ParseBig, which is slightly stricter. It previously accepted leading zeros for hexadecimal inputs but treated decimal inputs as octal if a leading zero digit was present. ParseUint64 is used in places where String2Big was used to decode a uint64. The new functions MustParseBig and MustParseUint64 are now used in many places where parsing errors were previously ignored. * common: delete unused big integer variables * accounts/abi: replace uses of BytesToBig with use of encoding/binary * common: remove BytesToBig * common: remove Bytes2Big * common: remove BigTrue * cmd/utils: add BigFlag and use it for error-checked integer flags While here, remove environment variable processing for DirectoryFlag because we don't use it. * core: add missing error checks in genesis block parser * common: remove String2Big * cmd/evm: use utils.BigFlag * common/math: check for 256 bit overflow in ParseBig This is supposed to prevent silent overflow/truncation of values in the genesis block JSON. Without this check, a genesis block that set a balance larger than 256 bits would lead to weird behaviour in the VM. * cmd/utils: fixup import
8 years ago
num := new(big.Int).SetBytes(ret)
if num.Cmp(big.NewInt(10)) != 0 {
t.Error("Expected 10, got", num)
}
}
func TestCall(t *testing.T) {
state, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
address := common.HexToAddress("0x0a")
state.SetCode(address, []byte{
byte(vm.PUSH1), 10,
byte(vm.PUSH1), 0,
byte(vm.MSTORE),
byte(vm.PUSH1), 32,
byte(vm.PUSH1), 0,
byte(vm.RETURN),
})
ret, _, err := Call(address, nil, &Config{State: state})
if err != nil {
t.Fatal("didn't expect error", err)
}
common: move big integer math to common/math (#3699) * common: remove CurrencyToString Move denomination values to params instead. * common: delete dead code * common: move big integer operations to common/math This commit consolidates all big integer operations into common/math and adds tests and documentation. There should be no change in semantics for BigPow, BigMin, BigMax, S256, U256, Exp and their behaviour is now locked in by tests. The BigD, BytesToBig and Bytes2Big functions don't provide additional value, all uses are replaced by new(big.Int).SetBytes(). BigToBytes is now called PaddedBigBytes, its minimum output size parameter is now specified as the number of bytes instead of bits. The single use of this function is in the EVM's MSTORE instruction. Big and String2Big are replaced by ParseBig, which is slightly stricter. It previously accepted leading zeros for hexadecimal inputs but treated decimal inputs as octal if a leading zero digit was present. ParseUint64 is used in places where String2Big was used to decode a uint64. The new functions MustParseBig and MustParseUint64 are now used in many places where parsing errors were previously ignored. * common: delete unused big integer variables * accounts/abi: replace uses of BytesToBig with use of encoding/binary * common: remove BytesToBig * common: remove Bytes2Big * common: remove BigTrue * cmd/utils: add BigFlag and use it for error-checked integer flags While here, remove environment variable processing for DirectoryFlag because we don't use it. * core: add missing error checks in genesis block parser * common: remove String2Big * cmd/evm: use utils.BigFlag * common/math: check for 256 bit overflow in ParseBig This is supposed to prevent silent overflow/truncation of values in the genesis block JSON. Without this check, a genesis block that set a balance larger than 256 bits would lead to weird behaviour in the VM. * cmd/utils: fixup import
8 years ago
num := new(big.Int).SetBytes(ret)
if num.Cmp(big.NewInt(10)) != 0 {
t.Error("Expected 10, got", num)
}
}
func BenchmarkCall(b *testing.B) {
var definition = `[{"constant":true,"inputs":[],"name":"seller","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"abort","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"value","outputs":[{"name":"","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[],"name":"refund","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"buyer","outputs":[{"name":"","type":"address"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmReceived","outputs":[],"type":"function"},{"constant":true,"inputs":[],"name":"state","outputs":[{"name":"","type":"uint8"}],"type":"function"},{"constant":false,"inputs":[],"name":"confirmPurchase","outputs":[],"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[],"name":"Aborted","type":"event"},{"anonymous":false,"inputs":[],"name":"PurchaseConfirmed","type":"event"},{"anonymous":false,"inputs":[],"name":"ItemReceived","type":"event"},{"anonymous":false,"inputs":[],"name":"Refunded","type":"event"}]`
var code = common.Hex2Bytes("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")
abi, err := abi.JSON(strings.NewReader(definition))
if err != nil {
b.Fatal(err)
}
cpurchase, err := abi.Pack("confirmPurchase")
if err != nil {
b.Fatal(err)
}
creceived, err := abi.Pack("confirmReceived")
if err != nil {
b.Fatal(err)
}
refund, err := abi.Pack("refund")
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
for j := 0; j < 400; j++ {
Execute(code, cpurchase, nil)
Execute(code, creceived, nil)
Execute(code, refund, nil)
}
}
}
func benchmarkEVM_Create(bench *testing.B, code string) {
var (
statedb, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
sender = common.BytesToAddress([]byte("sender"))
receiver = common.BytesToAddress([]byte("receiver"))
)
statedb.CreateAccount(sender)
statedb.SetCode(receiver, common.FromHex(code))
runtimeConfig := Config{
Origin: sender,
State: statedb,
GasLimit: 10000000,
Difficulty: big.NewInt(0x200000),
Time: new(big.Int).SetUint64(0),
Coinbase: common.Address{},
BlockNumber: new(big.Int).SetUint64(1),
ChainConfig: &params.ChainConfig{
ChainID: big.NewInt(1),
HomesteadBlock: new(big.Int),
ByzantiumBlock: new(big.Int),
ConstantinopleBlock: new(big.Int),
DAOForkBlock: new(big.Int),
DAOForkSupport: false,
EIP150Block: new(big.Int),
EIP155Block: new(big.Int),
EIP158Block: new(big.Int),
},
EVMConfig: vm.Config{},
}
// Warm up the intpools and stuff
bench.ResetTimer()
for i := 0; i < bench.N; i++ {
Call(receiver, []byte{}, &runtimeConfig)
}
bench.StopTimer()
}
func BenchmarkEVM_CREATE_500(bench *testing.B) {
// initcode size 500K, repeatedly calls CREATE and then modifies the mem contents
benchmarkEVM_Create(bench, "5b6207a120600080f0600152600056")
}
func BenchmarkEVM_CREATE2_500(bench *testing.B) {
// initcode size 500K, repeatedly calls CREATE2 and then modifies the mem contents
benchmarkEVM_Create(bench, "5b586207a120600080f5600152600056")
}
func BenchmarkEVM_CREATE_1200(bench *testing.B) {
// initcode size 1200K, repeatedly calls CREATE and then modifies the mem contents
benchmarkEVM_Create(bench, "5b62124f80600080f0600152600056")
}
func BenchmarkEVM_CREATE2_1200(bench *testing.B) {
// initcode size 1200K, repeatedly calls CREATE2 and then modifies the mem contents
benchmarkEVM_Create(bench, "5b5862124f80600080f5600152600056")
}
func fakeHeader(n uint64, parentHash common.Hash) *types.Header {
header := types.Header{
Coinbase: common.HexToAddress("0x00000000000000000000000000000000deadbeef"),
Number: big.NewInt(int64(n)),
ParentHash: parentHash,
Time: 1000,
Nonce: types.BlockNonce{0x1},
Extra: []byte{},
Difficulty: big.NewInt(0),
GasLimit: 100000,
}
return &header
}
type dummyChain struct {
counter int
}
// Engine retrieves the chain's consensus engine.
func (d *dummyChain) Engine() consensus.Engine {
return nil
}
// GetHeader returns the hash corresponding to their hash.
func (d *dummyChain) GetHeader(h common.Hash, n uint64) *types.Header {
d.counter++
parentHash := common.Hash{}
s := common.LeftPadBytes(big.NewInt(int64(n-1)).Bytes(), 32)
copy(parentHash[:], s)
//parentHash := common.Hash{byte(n - 1)}
//fmt.Printf("GetHeader(%x, %d) => header with parent %x\n", h, n, parentHash)
return fakeHeader(n, parentHash)
}
// TestBlockhash tests the blockhash operation. It's a bit special, since it internally
// requires access to a chain reader.
func TestBlockhash(t *testing.T) {
// Current head
n := uint64(1000)
parentHash := common.Hash{}
s := common.LeftPadBytes(big.NewInt(int64(n-1)).Bytes(), 32)
copy(parentHash[:], s)
header := fakeHeader(n, parentHash)
// This is the contract we're using. It requests the blockhash for current num (should be all zeroes),
// then iteratively fetches all blockhashes back to n-260.
// It returns
// 1. the first (should be zero)
// 2. the second (should be the parent hash)
// 3. the last non-zero hash
// By making the chain reader return hashes which correlate to the number, we can
// verify that it obtained the right hashes where it should
/*
pragma solidity ^0.5.3;
contract Hasher{
function test() public view returns (bytes32, bytes32, bytes32){
uint256 x = block.number;
bytes32 first;
bytes32 last;
bytes32 zero;
zero = blockhash(x); // Should be zeroes
first = blockhash(x-1);
for(uint256 i = 2 ; i < 260; i++){
bytes32 hash = blockhash(x - i);
if (uint256(hash) != 0){
last = hash;
}
}
return (zero, first, last);
}
}
*/
// The contract above
data := common.Hex2Bytes("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")
// The method call to 'test()'
input := common.Hex2Bytes("f8a8fd6d")
chain := &dummyChain{}
ret, _, err := Execute(data, input, &Config{
GetHashFn: core.GetHashFn(header, chain),
BlockNumber: new(big.Int).Set(header.Number),
})
if err != nil {
t.Fatalf("expected no error, got %v", err)
}
if len(ret) != 96 {
t.Fatalf("expected returndata to be 96 bytes, got %d", len(ret))
}
zero := new(big.Int).SetBytes(ret[0:32])
first := new(big.Int).SetBytes(ret[32:64])
last := new(big.Int).SetBytes(ret[64:96])
if zero.BitLen() != 0 {
t.Fatalf("expected zeroes, got %x", ret[0:32])
}
if first.Uint64() != 999 {
t.Fatalf("second block should be 999, got %d (%x)", first, ret[32:64])
}
if last.Uint64() != 744 {
t.Fatalf("last block should be 744, got %d (%x)", last, ret[64:96])
}
if exp, got := 255, chain.counter; exp != got {
t.Errorf("suboptimal; too much chain iteration, expected %d, got %d", exp, got)
}
}
type stepCounter struct {
inner *logger.JSONLogger
steps int
}
func (s *stepCounter) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
}
func (s *stepCounter) CaptureFault(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) {
}
func (s *stepCounter) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {}
func (s *stepCounter) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
s.steps++
// Enable this for more output
//s.inner.CaptureState(env, pc, op, gas, cost, memory, stack, rStack, contract, depth, err)
}
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
// benchmarkNonModifyingCode benchmarks code, but if the code modifies the
// state, this should not be used, since it does not reset the state between runs.
func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode string, b *testing.B) {
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
cfg := new(Config)
setDefaults(cfg)
cfg.State, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
cfg.GasLimit = gas
if len(tracerCode) > 0 {
tracer, err := tracers.New(tracerCode, new(tracers.Context))
if err != nil {
b.Fatal(err)
}
cfg.EVMConfig = vm.Config{
Debug: true,
Tracer: tracer,
}
}
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
var (
destination = common.BytesToAddress([]byte("contract"))
vmenv = NewEnv(cfg)
sender = vm.AccountRef(cfg.Origin)
)
cfg.State.CreateAccount(destination)
eoa := common.HexToAddress("E0")
{
cfg.State.CreateAccount(eoa)
cfg.State.SetNonce(eoa, 100)
}
reverting := common.HexToAddress("EE")
{
cfg.State.CreateAccount(reverting)
cfg.State.SetCode(reverting, []byte{
byte(vm.PUSH1), 0x00,
byte(vm.PUSH1), 0x00,
byte(vm.REVERT),
})
}
//cfg.State.CreateAccount(cfg.Origin)
// set the receiver's (the executing contract) code for execution.
cfg.State.SetCode(destination, code)
vmenv.Call(sender, destination, nil, gas, cfg.Value)
b.Run(name, func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
vmenv.Call(sender, destination, nil, gas, cfg.Value)
}
})
}
// BenchmarkSimpleLoop test a pretty simple loop which loops until OOG
// 55 ms
func BenchmarkSimpleLoop(b *testing.B) {
staticCallIdentity := []byte{
byte(vm.JUMPDEST), // [ count ]
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.DUP1), // out insize
byte(vm.DUP1), // in offset
byte(vm.PUSH1), 0x4, // address of identity
byte(vm.GAS), // gas
byte(vm.STATICCALL),
byte(vm.POP), // pop return value
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
callIdentity := []byte{
byte(vm.JUMPDEST), // [ count ]
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.DUP1), // out insize
byte(vm.DUP1), // in offset
byte(vm.DUP1), // value
byte(vm.PUSH1), 0x4, // address of identity
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP), // pop return value
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
callInexistant := []byte{
byte(vm.JUMPDEST), // [ count ]
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.DUP1), // out insize
byte(vm.DUP1), // in offset
byte(vm.DUP1), // value
byte(vm.PUSH1), 0xff, // address of existing contract
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP), // pop return value
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
callEOA := []byte{
byte(vm.JUMPDEST), // [ count ]
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.DUP1), // out insize
byte(vm.DUP1), // in offset
byte(vm.DUP1), // value
byte(vm.PUSH1), 0xE0, // address of EOA
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP), // pop return value
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
loopingCode := []byte{
byte(vm.JUMPDEST), // [ count ]
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.DUP1), // out insize
byte(vm.DUP1), // in offset
byte(vm.PUSH1), 0x4, // address of identity
byte(vm.GAS), // gas
byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP), byte(vm.POP),
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
calllRevertingContractWithInput := []byte{
byte(vm.JUMPDEST), //
// push args for the call
byte(vm.PUSH1), 0, // out size
byte(vm.DUP1), // out offset
byte(vm.PUSH1), 0x20, // in size
byte(vm.PUSH1), 0x00, // in offset
byte(vm.PUSH1), 0x00, // value
byte(vm.PUSH1), 0xEE, // address of reverting contract
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP), // pop return value
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
//tracer := logger.NewJSONLogger(nil, os.Stdout)
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
//Execute(loopingCode, nil, &Config{
// EVMConfig: vm.Config{
// Debug: true,
// Tracer: tracer,
// }})
// 100M gas
benchmarkNonModifyingCode(100000000, staticCallIdentity, "staticcall-identity-100M", "", b)
benchmarkNonModifyingCode(100000000, callIdentity, "call-identity-100M", "", b)
benchmarkNonModifyingCode(100000000, loopingCode, "loop-100M", "", b)
benchmarkNonModifyingCode(100000000, callInexistant, "call-nonexist-100M", "", b)
benchmarkNonModifyingCode(100000000, callEOA, "call-EOA-100M", "", b)
benchmarkNonModifyingCode(100000000, calllRevertingContractWithInput, "call-reverting-100M", "", b)
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
//benchmarkNonModifyingCode(10000000, staticCallIdentity, "staticcall-identity-10M", b)
//benchmarkNonModifyingCode(10000000, loopingCode, "loop-10M", b)
}
// TestEip2929Cases contains various testcases that are used for
// EIP-2929 about gas repricings
func TestEip2929Cases(t *testing.T) {
t.Skip("Test only useful for generating documentation")
id := 1
prettyPrint := func(comment string, code []byte) {
instrs := make([]string, 0)
it := asm.NewInstructionIterator(code)
for it.Next() {
if it.Arg() != nil && 0 < len(it.Arg()) {
instrs = append(instrs, fmt.Sprintf("%v 0x%x", it.Op(), it.Arg()))
} else {
instrs = append(instrs, fmt.Sprintf("%v", it.Op()))
}
}
ops := strings.Join(instrs, ", ")
fmt.Printf("### Case %d\n\n", id)
id++
fmt.Printf("%v\n\nBytecode: \n```\n0x%x\n```\nOperations: \n```\n%v\n```\n\n",
comment,
code, ops)
Execute(code, nil, &Config{
EVMConfig: vm.Config{
Debug: true,
Tracer: logger.NewMarkdownLogger(nil, os.Stdout),
ExtraEips: []int{2929},
},
})
}
{ // First eip testcase
code := []byte{
// Three checks against a precompile
byte(vm.PUSH1), 1, byte(vm.EXTCODEHASH), byte(vm.POP),
byte(vm.PUSH1), 2, byte(vm.EXTCODESIZE), byte(vm.POP),
byte(vm.PUSH1), 3, byte(vm.BALANCE), byte(vm.POP),
// Three checks against a non-precompile
byte(vm.PUSH1), 0xf1, byte(vm.EXTCODEHASH), byte(vm.POP),
byte(vm.PUSH1), 0xf2, byte(vm.EXTCODESIZE), byte(vm.POP),
byte(vm.PUSH1), 0xf3, byte(vm.BALANCE), byte(vm.POP),
// Same three checks (should be cheaper)
byte(vm.PUSH1), 0xf2, byte(vm.EXTCODEHASH), byte(vm.POP),
byte(vm.PUSH1), 0xf3, byte(vm.EXTCODESIZE), byte(vm.POP),
byte(vm.PUSH1), 0xf1, byte(vm.BALANCE), byte(vm.POP),
// Check the origin, and the 'this'
byte(vm.ORIGIN), byte(vm.BALANCE), byte(vm.POP),
byte(vm.ADDRESS), byte(vm.BALANCE), byte(vm.POP),
byte(vm.STOP),
}
prettyPrint("This checks `EXT`(codehash,codesize,balance) of precompiles, which should be `100`, "+
"and later checks the same operations twice against some non-precompiles. "+
"Those are cheaper second time they are accessed. Lastly, it checks the `BALANCE` of `origin` and `this`.", code)
}
{ // EXTCODECOPY
code := []byte{
// extcodecopy( 0xff,0,0,0,0)
byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY),
// extcodecopy( 0xff,0,0,0,0)
byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
byte(vm.PUSH1), 0xff, byte(vm.EXTCODECOPY),
// extcodecopy( this,0,0,0,0)
byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, byte(vm.PUSH1), 0x00, //length, codeoffset, memoffset
byte(vm.ADDRESS), byte(vm.EXTCODECOPY),
byte(vm.STOP),
}
prettyPrint("This checks `extcodecopy( 0xff,0,0,0,0)` twice, (should be expensive first time), "+
"and then does `extcodecopy( this,0,0,0,0)`.", code)
}
{ // SLOAD + SSTORE
code := []byte{
// Add slot `0x1` to access list
byte(vm.PUSH1), 0x01, byte(vm.SLOAD), byte(vm.POP), // SLOAD( 0x1) (add to access list)
// Write to `0x1` which is already in access list
byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x01, byte(vm.SSTORE), // SSTORE( loc: 0x01, val: 0x11)
// Write to `0x2` which is not in access list
byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11)
// Write again to `0x2`
byte(vm.PUSH1), 0x11, byte(vm.PUSH1), 0x02, byte(vm.SSTORE), // SSTORE( loc: 0x02, val: 0x11)
// Read slot in access list (0x2)
byte(vm.PUSH1), 0x02, byte(vm.SLOAD), // SLOAD( 0x2)
// Read slot in access list (0x1)
byte(vm.PUSH1), 0x01, byte(vm.SLOAD), // SLOAD( 0x1)
}
prettyPrint("This checks `sload( 0x1)` followed by `sstore(loc: 0x01, val:0x11)`, then 'naked' sstore:"+
"`sstore(loc: 0x02, val:0x11)` twice, and `sload(0x2)`, `sload(0x1)`. ", code)
}
{ // Call variants
code := []byte{
// identity precompile
byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0x04, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP),
// random account - call 1
byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.CALL), byte(vm.POP),
// random account - call 2
byte(vm.PUSH1), 0x0, byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.PUSH1), 0x0, byte(vm.STATICCALL), byte(vm.POP),
}
prettyPrint("This calls the `identity`-precompile (cheap), then calls an account (expensive) and `staticcall`s the same"+
"account (cheap)", code)
}
}
// TestColdAccountAccessCost test that the cold account access cost is reported
// correctly
// see: https://github.com/ethereum/go-ethereum/issues/22649
func TestColdAccountAccessCost(t *testing.T) {
for i, tc := range []struct {
code []byte
step int
want uint64
}{
{ // EXTCODEHASH(0xff)
code: []byte{byte(vm.PUSH1), 0xFF, byte(vm.EXTCODEHASH), byte(vm.POP)},
step: 1,
want: 2600,
},
{ // BALANCE(0xff)
code: []byte{byte(vm.PUSH1), 0xFF, byte(vm.BALANCE), byte(vm.POP)},
step: 1,
want: 2600,
},
{ // CALL(0xff)
code: []byte{
byte(vm.PUSH1), 0x0,
byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.CALL), byte(vm.POP),
},
step: 7,
want: 2855,
},
{ // CALLCODE(0xff)
code: []byte{
byte(vm.PUSH1), 0x0,
byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.CALLCODE), byte(vm.POP),
},
step: 7,
want: 2855,
},
{ // DELEGATECALL(0xff)
code: []byte{
byte(vm.PUSH1), 0x0,
byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.DELEGATECALL), byte(vm.POP),
},
step: 6,
want: 2855,
},
{ // STATICCALL(0xff)
code: []byte{
byte(vm.PUSH1), 0x0,
byte(vm.DUP1), byte(vm.DUP1), byte(vm.DUP1),
byte(vm.PUSH1), 0xff, byte(vm.DUP1), byte(vm.STATICCALL), byte(vm.POP),
},
step: 6,
want: 2855,
},
{ // SELFDESTRUCT(0xff)
code: []byte{
byte(vm.PUSH1), 0xff, byte(vm.SELFDESTRUCT),
},
step: 1,
want: 7600,
},
} {
tracer := logger.NewStructLogger(nil)
Execute(tc.code, nil, &Config{
EVMConfig: vm.Config{
Debug: true,
Tracer: tracer,
},
})
have := tracer.StructLogs()[tc.step].GasCost
if want := tc.want; have != want {
for ii, op := range tracer.StructLogs() {
t.Logf("%d: %v %d", ii, op.OpName(), op.GasCost)
}
t.Fatalf("tescase %d, gas report wrong, step %d, have %d want %d", i, tc.step, have, want)
}
}
}
func TestRuntimeJSTracer(t *testing.T) {
jsTracers := []string{
`{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0,
step: function() { this.steps++},
fault: function() {},
result: function() {
return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",")
},
enter: function(frame) {
this.enters++;
this.enterGas = frame.getGas();
},
exit: function(res) {
this.exits++;
this.gasUsed = res.getGasUsed();
}}`,
`{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, steps:0,
fault: function() {},
result: function() {
return [this.enters, this.exits,this.enterGas,this.gasUsed, this.steps].join(",")
},
enter: function(frame) {
this.enters++;
this.enterGas = frame.getGas();
},
exit: function(res) {
this.exits++;
this.gasUsed = res.getGasUsed();
}}`}
tests := []struct {
code []byte
// One result per tracer
results []string
}{
{
// CREATE
code: []byte{
// Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes)
byte(vm.PUSH5),
// Init code: PUSH1 0, PUSH1 0, RETURN (3 steps)
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN),
byte(vm.PUSH1), 0,
byte(vm.MSTORE),
// length, offset, value
byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0,
byte(vm.CREATE),
byte(vm.POP),
},
results: []string{`"1,1,4294935775,6,12"`, `"1,1,4294935775,6,0"`},
},
{
// CREATE2
code: []byte{
// Store initcode in memory at 0x00 (5 bytes left-padded to 32 bytes)
byte(vm.PUSH5),
// Init code: PUSH1 0, PUSH1 0, RETURN (3 steps)
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN),
byte(vm.PUSH1), 0,
byte(vm.MSTORE),
// salt, length, offset, value
byte(vm.PUSH1), 1, byte(vm.PUSH1), 5, byte(vm.PUSH1), 27, byte(vm.PUSH1), 0,
byte(vm.CREATE2),
byte(vm.POP),
},
results: []string{`"1,1,4294935766,6,13"`, `"1,1,4294935766,6,0"`},
},
{
// CALL
code: []byte{
// outsize, outoffset, insize, inoffset
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0, // value
byte(vm.PUSH1), 0xbb, //address
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP),
},
results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`},
},
{
// CALLCODE
code: []byte{
// outsize, outoffset, insize, inoffset
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0, // value
byte(vm.PUSH1), 0xcc, //address
byte(vm.GAS), // gas
byte(vm.CALLCODE),
byte(vm.POP),
},
results: []string{`"1,1,4294964716,6,13"`, `"1,1,4294964716,6,0"`},
},
{
// STATICCALL
code: []byte{
// outsize, outoffset, insize, inoffset
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0xdd, //address
byte(vm.GAS), // gas
byte(vm.STATICCALL),
byte(vm.POP),
},
results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`},
},
{
// DELEGATECALL
code: []byte{
// outsize, outoffset, insize, inoffset
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0xee, //address
byte(vm.GAS), // gas
byte(vm.DELEGATECALL),
byte(vm.POP),
},
results: []string{`"1,1,4294964719,6,12"`, `"1,1,4294964719,6,0"`},
},
{
// CALL self-destructing contract
code: []byte{
// outsize, outoffset, insize, inoffset
byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0, // value
byte(vm.PUSH1), 0xff, //address
byte(vm.GAS), // gas
byte(vm.CALL),
byte(vm.POP),
},
results: []string{`"2,2,0,5003,12"`, `"2,2,0,5003,0"`},
},
}
calleeCode := []byte{
byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0,
byte(vm.RETURN),
}
depressedCode := []byte{
byte(vm.PUSH1), 0xaa,
byte(vm.SELFDESTRUCT),
}
main := common.HexToAddress("0xaa")
for i, jsTracer := range jsTracers {
for j, tc := range tests {
statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
statedb.SetCode(main, tc.code)
statedb.SetCode(common.HexToAddress("0xbb"), calleeCode)
statedb.SetCode(common.HexToAddress("0xcc"), calleeCode)
statedb.SetCode(common.HexToAddress("0xdd"), calleeCode)
statedb.SetCode(common.HexToAddress("0xee"), calleeCode)
statedb.SetCode(common.HexToAddress("0xff"), depressedCode)
tracer, err := tracers.New(jsTracer, new(tracers.Context))
if err != nil {
t.Fatal(err)
}
_, _, err = Call(main, nil, &Config{
State: statedb,
EVMConfig: vm.Config{
Debug: true,
Tracer: tracer,
}})
if err != nil {
t.Fatal("didn't expect error", err)
}
res, err := tracer.GetResult()
if err != nil {
t.Fatal(err)
}
if have, want := string(res), tc.results[i]; have != want {
t.Errorf("wrong result for tracer %d testcase %d, have \n%v\nwant\n%v\n", i, j, have, want)
}
}
}
}
func TestJSTracerCreateTx(t *testing.T) {
jsTracer := `
{enters: 0, exits: 0,
step: function() {},
fault: function() {},
result: function() { return [this.enters, this.exits].join(",") },
enter: function(frame) { this.enters++ },
exit: function(res) { this.exits++ }}`
code := []byte{byte(vm.PUSH1), 0, byte(vm.PUSH1), 0, byte(vm.RETURN)}
statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
tracer, err := tracers.New(jsTracer, new(tracers.Context))
if err != nil {
t.Fatal(err)
}
_, _, _, err = Create(code, &Config{
State: statedb,
EVMConfig: vm.Config{
Debug: true,
Tracer: tracer,
}})
if err != nil {
t.Fatal(err)
}
res, err := tracer.GetResult()
if err != nil {
t.Fatal(err)
}
if have, want := string(res), `"0,0"`; have != want {
t.Errorf("wrong result for tracer, have \n%v\nwant\n%v\n", have, want)
}
}
func BenchmarkTracerStepVsCallFrame(b *testing.B) {
// Simply pushes and pops some values in a loop
code := []byte{
byte(vm.JUMPDEST),
byte(vm.PUSH1), 0,
byte(vm.PUSH1), 0,
byte(vm.POP),
byte(vm.POP),
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
stepTracer := `
{
step: function() {},
fault: function() {},
result: function() {},
}`
callFrameTracer := `
{
enter: function() {},
exit: function() {},
fault: function() {},
result: function() {},
}`
benchmarkNonModifyingCode(10000000, code, "tracer-step-10M", stepTracer, b)
benchmarkNonModifyingCode(10000000, code, "tracer-call-frame-10M", callFrameTracer, b)
}