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core,eth: call frame tracing (#23087)

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This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:

    enter: type (opcode), from, to, input, gas, value
    exit: output, gasUsed, error

The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
This commit is contained in:
Sina Mahmoodi 2021-09-17 09:31:22 +02:00 committed by GitHub
parent 7ada89d4e6
commit 401354976b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
37 changed files with 2290 additions and 286 deletions
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5
core/vm/access_list_tracer.go
View File

@ -166,6 +166,11 @@ func (*AccessListTracer) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost
func (*AccessListTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {}
func (*AccessListTracer) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
}
func (*AccessListTracer) CaptureExit(output []byte, gasUsed uint64, err error) {}
// AccessList returns the current accesslist maintained by the tracer.
func (a *AccessListTracer) AccessList() types.AccessList {
return a.list.accessList()

53
core/vm/evm.go
View File

@ -193,11 +193,19 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
evm.Context.Transfer(evm.StateDB, caller.Address(), addr, value)
// Capture the tracer start/end events in debug mode
if evm.Config.Debug && evm.depth == 0 {
if evm.Config.Debug {
if evm.depth == 0 {
evm.Config.Tracer.CaptureStart(evm, caller.Address(), addr, false, input, gas, value)
defer func(startGas uint64, startTime time.Time) { // Lazy evaluation of the parameters
evm.Config.Tracer.CaptureEnd(ret, startGas-gas, time.Since(startTime), err)
}(gas, time.Now())
} else {
// Handle tracer events for entering and exiting a call frame
evm.Config.Tracer.CaptureEnter(CALL, caller.Address(), addr, input, gas, value)
defer func(startGas uint64) {
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
}(gas)
}
}
if isPrecompile {
@ -257,6 +265,14 @@ func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte,
}
var snapshot = evm.StateDB.Snapshot()
// Invoke tracer hooks that signal entering/exiting a call frame
if evm.Config.Debug {
evm.Config.Tracer.CaptureEnter(CALLCODE, caller.Address(), addr, input, gas, value)
defer func(startGas uint64) {
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
}(gas)
}
// It is allowed to call precompiles, even via delegatecall
if p, isPrecompile := evm.precompile(addr); isPrecompile {
ret, gas, err = RunPrecompiledContract(p, input, gas)
@ -293,6 +309,14 @@ func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []by
}
var snapshot = evm.StateDB.Snapshot()
// Invoke tracer hooks that signal entering/exiting a call frame
if evm.Config.Debug {
evm.Config.Tracer.CaptureEnter(DELEGATECALL, caller.Address(), addr, input, gas, nil)
defer func(startGas uint64) {
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
}(gas)
}
// It is allowed to call precompiles, even via delegatecall
if p, isPrecompile := evm.precompile(addr); isPrecompile {
ret, gas, err = RunPrecompiledContract(p, input, gas)
@ -338,6 +362,14 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte
// future scenarios
evm.StateDB.AddBalance(addr, big0)
// Invoke tracer hooks that signal entering/exiting a call frame
if evm.Config.Debug {
evm.Config.Tracer.CaptureEnter(STATICCALL, caller.Address(), addr, input, gas, nil)
defer func(startGas uint64) {
evm.Config.Tracer.CaptureExit(ret, startGas-gas, err)
}(gas)
}
if p, isPrecompile := evm.precompile(addr); isPrecompile {
ret, gas, err = RunPrecompiledContract(p, input, gas)
} else {
@ -377,7 +409,7 @@ func (c *codeAndHash) Hash() common.Hash {
}
// create creates a new contract using code as deployment code.
func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address) ([]byte, common.Address, uint64, error) {
func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address, typ OpCode) ([]byte, common.Address, uint64, error) {
// Depth check execution. Fail if we're trying to execute above the
// limit.
if evm.depth > int(params.CallCreateDepth) {
@ -415,9 +447,14 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
return nil, address, gas, nil
}
if evm.Config.Debug && evm.depth == 0 {
if evm.Config.Debug {
if evm.depth == 0 {
evm.Config.Tracer.CaptureStart(evm, caller.Address(), address, true, codeAndHash.code, gas, value)
} else {
evm.Config.Tracer.CaptureEnter(typ, caller.Address(), address, codeAndHash.code, gas, value)
}
}
start := time.Now()
ret, err := evm.interpreter.Run(contract, nil, false)
@ -455,8 +492,12 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
}
}
if evm.Config.Debug && evm.depth == 0 {
if evm.Config.Debug {
if evm.depth == 0 {
evm.Config.Tracer.CaptureEnd(ret, gas-contract.Gas, time.Since(start), err)
} else {
evm.Config.Tracer.CaptureExit(ret, gas-contract.Gas, err)
}
}
return ret, address, contract.Gas, err
}
@ -464,7 +505,7 @@ func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64,
// Create creates a new contract using code as deployment code.
func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
contractAddr = crypto.CreateAddress(caller.Address(), evm.StateDB.GetNonce(caller.Address()))
return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr)
return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr, CREATE)
}
// Create2 creates a new contract using code as deployment code.
@ -474,7 +515,7 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I
func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *big.Int, salt *uint256.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) {
codeAndHash := &codeAndHash{code: code}
contractAddr = crypto.CreateAddress2(caller.Address(), salt.Bytes32(), codeAndHash.Hash().Bytes())
return evm.create(caller, codeAndHash, gas, endowment, contractAddr)
return evm.create(caller, codeAndHash, gas, endowment, contractAddr, CREATE2)
}
// ChainConfig returns the environment's chain configuration

4
core/vm/instructions.go
View File

@ -791,6 +791,10 @@ func opSuicide(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]
balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address())
interpreter.evm.StateDB.AddBalance(beneficiary.Bytes20(), balance)
interpreter.evm.StateDB.Suicide(scope.Contract.Address())
if interpreter.cfg.Debug {
interpreter.cfg.Tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance)
interpreter.cfg.Tracer.CaptureExit([]byte{}, 0, nil)
}
return nil, nil
}

12
core/vm/logger.go
View File

@ -106,6 +106,8 @@ func (s *StructLog) ErrorString() string {
type Tracer interface {
CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int)
CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error)
CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int)
CaptureExit(output []byte, gasUsed uint64, err error)
CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error)
CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error)
}
@ -225,6 +227,11 @@ func (l *StructLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration
}
}
func (l *StructLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
}
func (l *StructLogger) CaptureExit(output []byte, gasUsed uint64, err error) {}
// StructLogs returns the captured log entries.
func (l *StructLogger) StructLogs() []StructLog { return l.logs }
@ -342,3 +349,8 @@ func (t *mdLogger) CaptureEnd(output []byte, gasUsed uint64, tm time.Duration, e
fmt.Fprintf(t.out, "\nOutput: `0x%x`\nConsumed gas: `%d`\nError: `%v`\n",
output, gasUsed, err)
}
func (t *mdLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
}
func (t *mdLogger) CaptureExit(output []byte, gasUsed uint64, err error) {}

5
core/vm/logger_json.go
View File

@ -87,3 +87,8 @@ func (l *JSONLogger) CaptureEnd(output []byte, gasUsed uint64, t time.Duration,
}
l.encoder.Encode(endLog{common.Bytes2Hex(output), math.HexOrDecimal64(gasUsed), t, errMsg})
}
func (l *JSONLogger) CaptureEnter(typ OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
}
func (l *JSONLogger) CaptureExit(output []byte, gasUsed uint64, err error) {}

263
core/vm/runtime/runtime_test.go
View File

@ -33,6 +33,7 @@ import (
"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/params"
)
@ -342,11 +343,21 @@ func (s *stepCounter) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, co
// 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, b *testing.B) {
func benchmarkNonModifyingCode(gas uint64, code []byte, name string, tracerCode string, b *testing.B) {
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,
}
}
var (
destination = common.BytesToAddress([]byte("contract"))
vmenv = NewEnv(cfg)
@ -486,12 +497,12 @@ func BenchmarkSimpleLoop(b *testing.B) {
// 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)
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)
//benchmarkNonModifyingCode(10000000, staticCallIdentity, "staticcall-identity-10M", b)
//benchmarkNonModifyingCode(10000000, loopingCode, "loop-10M", b)
@ -688,3 +699,241 @@ func TestColdAccountAccessCost(t *testing.T) {
}
}
}
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)
}

2
core/vm/stack.go
View File

@ -91,7 +91,7 @@ func (st *Stack) Print() {
fmt.Println("### stack ###")
if len(st.data) > 0 {
for i, val := range st.data {
fmt.Printf("%-3d %v\n", i, val)
fmt.Printf("%-3d %s\n", i, val.String())
}
} else {
fmt.Println("-- empty --")

27
eth/tracers/internal/tracers/assets.go
View File

File diff suppressed because one or more lines are too long

241
eth/tracers/internal/tracers/call_tracer.js
View File

@ -1,4 +1,4 @@
// Copyright 2017 The go-ethereum Authors
// Copyright 2021 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
@ -14,187 +14,23 @@
// 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/>.
// callTracer is a full blown transaction tracer that extracts and reports all
// the internal calls made by a transaction, along with any useful information.
// callFrameTracer uses the new call frame tracing methods to report useful information
// about internal messages of a transaction.
{
// callstack is the current recursive call stack of the EVM execution.
callstack: [{}],
// descended tracks whether we've just descended from an outer transaction into
// an inner call.
descended: false,
// step is invoked for every opcode that the VM executes.
step: function(log, db) {
// Capture any errors immediately
var error = log.getError();
if (error !== undefined) {
this.fault(log, db);
return;
}
// We only care about system opcodes, faster if we pre-check once
var syscall = (log.op.toNumber() & 0xf0) == 0xf0;
if (syscall) {
var op = log.op.toString();
}
// If a new contract is being created, add to the call stack
if (syscall && (op == 'CREATE' || op == "CREATE2")) {
var inOff = log.stack.peek(1).valueOf();
var inEnd = inOff + log.stack.peek(2).valueOf();
// Assemble the internal call report and store for completion
var call = {
type: op,
from: toHex(log.contract.getAddress()),
input: toHex(log.memory.slice(inOff, inEnd)),
gasIn: log.getGas(),
gasCost: log.getCost(),
value: '0x' + log.stack.peek(0).toString(16)
};
this.callstack.push(call);
this.descended = true
return;
}
// If a contract is being self destructed, gather that as a subcall too
if (syscall && op == 'SELFDESTRUCT') {
var left = this.callstack.length;
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push({
type: op,
from: toHex(log.contract.getAddress()),
to: toHex(toAddress(log.stack.peek(0).toString(16))),
gasIn: log.getGas(),
gasCost: log.getCost(),
value: '0x' + db.getBalance(log.contract.getAddress()).toString(16)
});
return
}
// If a new method invocation is being done, add to the call stack
if (syscall && (op == 'CALL' || op == 'CALLCODE' || op == 'DELEGATECALL' || op == 'STATICCALL')) {
// Skip any pre-compile invocations, those are just fancy opcodes
var to = toAddress(log.stack.peek(1).toString(16));
if (isPrecompiled(to)) {
return
}
var off = (op == 'DELEGATECALL' || op == 'STATICCALL' ? 0 : 1);
var inOff = log.stack.peek(2 + off).valueOf();
var inEnd = inOff + log.stack.peek(3 + off).valueOf();
// Assemble the internal call report and store for completion
var call = {
type: op,
from: toHex(log.contract.getAddress()),
to: toHex(to),
input: toHex(log.memory.slice(inOff, inEnd)),
gasIn: log.getGas(),
gasCost: log.getCost(),
outOff: log.stack.peek(4 + off).valueOf(),
outLen: log.stack.peek(5 + off).valueOf()
};
if (op != 'DELEGATECALL' && op != 'STATICCALL') {
call.value = '0x' + log.stack.peek(2).toString(16);
}
this.callstack.push(call);
this.descended = true
return;
}
// If we've just descended into an inner call, retrieve it's true allowance. We
// need to extract if from within the call as there may be funky gas dynamics
// with regard to requested and actually given gas (2300 stipend, 63/64 rule).
if (this.descended) {
if (log.getDepth() >= this.callstack.length) {
this.callstack[this.callstack.length - 1].gas = log.getGas();
} else {
// TODO(karalabe): The call was made to a plain account. We currently don't
// have access to the true gas amount inside the call and so any amount will
// mostly be wrong since it depends on a lot of input args. Skip gas for now.
}
this.descended = false;
}
// If an existing call is returning, pop off the call stack
if (syscall && op == 'REVERT') {
this.callstack[this.callstack.length - 1].error = "execution reverted";
return;
}
if (log.getDepth() == this.callstack.length - 1) {
// Pop off the last call and get the execution results
var call = this.callstack.pop();
if (call.type == 'CREATE' || call.type == "CREATE2") {
// If the call was a CREATE, retrieve the contract address and output code
call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost - log.getGas()).toString(16);
delete call.gasIn; delete call.gasCost;
var ret = log.stack.peek(0);
if (!ret.equals(0)) {
call.to = toHex(toAddress(ret.toString(16)));
call.output = toHex(db.getCode(toAddress(ret.toString(16))));
} else if (call.error === undefined) {
call.error = "internal failure"; // TODO(karalabe): surface these faults somehow
}
} else {
// If the call was a contract call, retrieve the gas usage and output
if (call.gas !== undefined) {
call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost + call.gas - log.getGas()).toString(16);
}
var ret = log.stack.peek(0);
if (!ret.equals(0)) {
call.output = toHex(log.memory.slice(call.outOff, call.outOff + call.outLen));
} else if (call.error === undefined) {
call.error = "internal failure"; // TODO(karalabe): surface these faults somehow
}
delete call.gasIn; delete call.gasCost;
delete call.outOff; delete call.outLen;
}
if (call.gas !== undefined) {
call.gas = '0x' + bigInt(call.gas).toString(16);
}
// Inject the call into the previous one
var left = this.callstack.length;
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push(call);
}
},
// fault is invoked when the actual execution of an opcode fails.
fault: function(log, db) {
// If the topmost call already reverted, don't handle the additional fault again
if (this.callstack[this.callstack.length - 1].error !== undefined) {
return;
var len = this.callstack.length
if (len > 1) {
var call = this.callstack.pop()
if (this.callstack[len-1].calls === undefined) {
this.callstack[len-1].calls = []
}
// Pop off the just failed call
var call = this.callstack.pop();
call.error = log.getError();
// Consume all available gas and clean any leftovers
if (call.gas !== undefined) {
call.gas = '0x' + bigInt(call.gas).toString(16);
call.gasUsed = call.gas
this.callstack[len-1].calls.push(call)
}
delete call.gasIn; delete call.gasCost;
delete call.outOff; delete call.outLen;
// Flatten the failed call into its parent
var left = this.callstack.length;
if (left > 0) {
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push(call);
return;
}
// Last call failed too, leave it in the stack
this.callstack.push(call);
},
// result is invoked when all the opcodes have been iterated over and returns
// the final result of the tracing.
result: function(ctx, db) {
// Prepare outer message info
var result = {
type: ctx.type,
from: toHex(ctx.from),
@ -204,22 +40,55 @@
gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16),
input: toHex(ctx.input),
output: toHex(ctx.output),
time: ctx.time,
};
}
if (this.callstack[0].calls !== undefined) {
result.calls = this.callstack[0].calls;
result.calls = this.callstack[0].calls
}
if (this.callstack[0].error !== undefined) {
result.error = this.callstack[0].error;
result.error = this.callstack[0].error
} else if (ctx.error !== undefined) {
result.error = ctx.error;
result.error = ctx.error
}
if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) {
delete result.output;
delete result.output
}
return this.finalize(result);
},
return this.finalize(result)
},
enter: function(frame) {
var call = {
type: frame.getType(),
from: toHex(frame.getFrom()),
to: toHex(frame.getTo()),
input: toHex(frame.getInput()),
gas: '0x' + bigInt(frame.getGas()).toString('16'),
}
if (frame.getValue() !== undefined){
call.value='0x' + bigInt(frame.getValue()).toString(16)
}
this.callstack.push(call)
},
exit: function(frameResult) {
var len = this.callstack.length
if (len > 1) {
var call = this.callstack.pop()
call.gasUsed = '0x' + bigInt(frameResult.getGasUsed()).toString('16')
var error = frameResult.getError()
if (error === undefined) {
call.output = toHex(frameResult.getOutput())
} else {
call.error = error
if (call.type === 'CREATE' || call.type === 'CREATE2') {
delete call.to
}
}
len -= 1
if (this.callstack[len-1].calls === undefined) {
this.callstack[len-1].calls = []
}
this.callstack[len-1].calls.push(call)
}
},
// finalize recreates a call object using the final desired field oder for json
// serialization. This is a nicety feature to pass meaningfully ordered results
// to users who don't interpret it, just display it.
@ -239,14 +108,14 @@
}
for (var key in sorted) {
if (sorted[key] === undefined) {
delete sorted[key];
delete sorted[key]
}
}
if (sorted.calls !== undefined) {
for (var i=0; i<sorted.calls.length; i++) {
sorted.calls[i] = this.finalize(sorted.calls[i]);
sorted.calls[i] = this.finalize(sorted.calls[i])
}
}
return sorted;
return sorted
}
}

252
eth/tracers/internal/tracers/call_tracer_legacy.js Normal file
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@ -0,0 +1,252 @@
// Copyright 2017 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/>.
// callTracer is a full blown transaction tracer that extracts and reports all
// the internal calls made by a transaction, along with any useful information.
{
// callstack is the current recursive call stack of the EVM execution.
callstack: [{}],
// descended tracks whether we've just descended from an outer transaction into
// an inner call.
descended: false,
// step is invoked for every opcode that the VM executes.
step: function(log, db) {
// Capture any errors immediately
var error = log.getError();
if (error !== undefined) {
this.fault(log, db);
return;
}
// We only care about system opcodes, faster if we pre-check once
var syscall = (log.op.toNumber() & 0xf0) == 0xf0;
if (syscall) {
var op = log.op.toString();
}
// If a new contract is being created, add to the call stack
if (syscall && (op == 'CREATE' || op == "CREATE2")) {
var inOff = log.stack.peek(1).valueOf();
var inEnd = inOff + log.stack.peek(2).valueOf();
// Assemble the internal call report and store for completion
var call = {
type: op,
from: toHex(log.contract.getAddress()),
input: toHex(log.memory.slice(inOff, inEnd)),
gasIn: log.getGas(),
gasCost: log.getCost(),
value: '0x' + log.stack.peek(0).toString(16)
};
this.callstack.push(call);
this.descended = true
return;
}
// If a contract is being self destructed, gather that as a subcall too
if (syscall && op == 'SELFDESTRUCT') {
var left = this.callstack.length;
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push({
type: op,
from: toHex(log.contract.getAddress()),
to: toHex(toAddress(log.stack.peek(0).toString(16))),
gasIn: log.getGas(),
gasCost: log.getCost(),
value: '0x' + db.getBalance(log.contract.getAddress()).toString(16)
});
return
}
// If a new method invocation is being done, add to the call stack
if (syscall && (op == 'CALL' || op == 'CALLCODE' || op == 'DELEGATECALL' || op == 'STATICCALL')) {
// Skip any pre-compile invocations, those are just fancy opcodes
var to = toAddress(log.stack.peek(1).toString(16));
if (isPrecompiled(to)) {
return
}
var off = (op == 'DELEGATECALL' || op == 'STATICCALL' ? 0 : 1);
var inOff = log.stack.peek(2 + off).valueOf();
var inEnd = inOff + log.stack.peek(3 + off).valueOf();
// Assemble the internal call report and store for completion
var call = {
type: op,
from: toHex(log.contract.getAddress()),
to: toHex(to),
input: toHex(log.memory.slice(inOff, inEnd)),
gasIn: log.getGas(),
gasCost: log.getCost(),
outOff: log.stack.peek(4 + off).valueOf(),
outLen: log.stack.peek(5 + off).valueOf()
};
if (op != 'DELEGATECALL' && op != 'STATICCALL') {
call.value = '0x' + log.stack.peek(2).toString(16);
}
this.callstack.push(call);
this.descended = true
return;
}
// If we've just descended into an inner call, retrieve it's true allowance. We
// need to extract if from within the call as there may be funky gas dynamics
// with regard to requested and actually given gas (2300 stipend, 63/64 rule).
if (this.descended) {
if (log.getDepth() >= this.callstack.length) {
this.callstack[this.callstack.length - 1].gas = log.getGas();
} else {
// TODO(karalabe): The call was made to a plain account. We currently don't
// have access to the true gas amount inside the call and so any amount will
// mostly be wrong since it depends on a lot of input args. Skip gas for now.
}
this.descended = false;
}
// If an existing call is returning, pop off the call stack
if (syscall && op == 'REVERT') {
this.callstack[this.callstack.length - 1].error = "execution reverted";
return;
}
if (log.getDepth() == this.callstack.length - 1) {
// Pop off the last call and get the execution results
var call = this.callstack.pop();
if (call.type == 'CREATE' || call.type == "CREATE2") {
// If the call was a CREATE, retrieve the contract address and output code
call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost - log.getGas()).toString(16);
delete call.gasIn; delete call.gasCost;
var ret = log.stack.peek(0);
if (!ret.equals(0)) {
call.to = toHex(toAddress(ret.toString(16)));
call.output = toHex(db.getCode(toAddress(ret.toString(16))));
} else if (call.error === undefined) {
call.error = "internal failure"; // TODO(karalabe): surface these faults somehow
}
} else {
// If the call was a contract call, retrieve the gas usage and output
if (call.gas !== undefined) {
call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost + call.gas - log.getGas()).toString(16);
}
var ret = log.stack.peek(0);
if (!ret.equals(0)) {
call.output = toHex(log.memory.slice(call.outOff, call.outOff + call.outLen));
} else if (call.error === undefined) {
call.error = "internal failure"; // TODO(karalabe): surface these faults somehow
}
delete call.gasIn; delete call.gasCost;
delete call.outOff; delete call.outLen;
}
if (call.gas !== undefined) {
call.gas = '0x' + bigInt(call.gas).toString(16);
}
// Inject the call into the previous one
var left = this.callstack.length;
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push(call);
}
},
// fault is invoked when the actual execution of an opcode fails.
fault: function(log, db) {
// If the topmost call already reverted, don't handle the additional fault again
if (this.callstack[this.callstack.length - 1].error !== undefined) {
return;
}
// Pop off the just failed call
var call = this.callstack.pop();
call.error = log.getError();
// Consume all available gas and clean any leftovers
if (call.gas !== undefined) {
call.gas = '0x' + bigInt(call.gas).toString(16);
call.gasUsed = call.gas
}
delete call.gasIn; delete call.gasCost;
delete call.outOff; delete call.outLen;
// Flatten the failed call into its parent
var left = this.callstack.length;
if (left > 0) {
if (this.callstack[left-1].calls === undefined) {
this.callstack[left-1].calls = [];
}
this.callstack[left-1].calls.push(call);
return;
}
// Last call failed too, leave it in the stack
this.callstack.push(call);
},
// result is invoked when all the opcodes have been iterated over and returns
// the final result of the tracing.
result: function(ctx, db) {
var result = {
type: ctx.type,
from: toHex(ctx.from),
to: toHex(ctx.to),
value: '0x' + ctx.value.toString(16),
gas: '0x' + bigInt(ctx.gas).toString(16),
gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16),
input: toHex(ctx.input),
output: toHex(ctx.output),
time: ctx.time,
};
if (this.callstack[0].calls !== undefined) {
result.calls = this.callstack[0].calls;
}
if (this.callstack[0].error !== undefined) {
result.error = this.callstack[0].error;
} else if (ctx.error !== undefined) {
result.error = ctx.error;
}
if (result.error !== undefined && (result.error !== "execution reverted" || result.output ==="0x")) {
delete result.output;
}
return this.finalize(result);
},
// finalize recreates a call object using the final desired field oder for json
// serialization. This is a nicety feature to pass meaningfully ordered results
// to users who don't interpret it, just display it.
finalize: function(call) {
var sorted = {
type: call.type,
from: call.from,
to: call.to,
value: call.value,
gas: call.gas,
gasUsed: call.gasUsed,
input: call.input,
output: call.output,
error: call.error,
time: call.time,
calls: call.calls,
}
for (var key in sorted) {
if (sorted[key] === undefined) {
delete sorted[key];
}
}
if (sorted.calls !== undefined) {
for (var i=0; i<sorted.calls.length; i++) {
sorted.calls[i] = this.finalize(sorted.calls[i]);
}
}
return sorted;
}
}

0
eth/tracers/testdata/call_tracer_create.json → eth/tracers/testdata/call_tracer/create.json vendored
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0
eth/tracers/testdata/call_tracer_deep_calls.json → eth/tracers/testdata/call_tracer/deep_calls.json vendored
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0
eth/tracers/testdata/call_tracer_delegatecall.json → eth/tracers/testdata/call_tracer/delegatecall.json vendored
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eth/tracers/testdata/call_tracer/inner_create_oog_outer_throw.json vendored Normal file
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File diff suppressed because one or more lines are too long

63
eth/tracers/testdata/call_tracer/inner_instafail.json vendored Normal file
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@ -0,0 +1,63 @@
{
"genesis": {
"difficulty": "117067574",
"extraData": "0xd783010502846765746887676f312e372e33856c696e7578",
"gasLimit": "4712380",
"hash": "0xe05db05eeb3f288041ecb10a787df121c0ed69499355716e17c307de313a4486",
"miner": "0x0c062b329265c965deef1eede55183b3acb8f611",
"mixHash": "0xb669ae39118a53d2c65fd3b1e1d3850dd3f8c6842030698ed846a2762d68b61d",
"nonce": "0x2b469722b8e28c45",
"number": "24973",
"stateRoot": "0x532a5c3f75453a696428db078e32ae283c85cb97e4d8560dbdf022adac6df369",
"timestamp": "1479891145",
"totalDifficulty": "1892250259406",
"alloc": {
"0x6c06b16512b332e6cd8293a2974872674716ce18": {
"balance": "0x0",
"nonce": "1",
"code": "0x60606040526000357c0100000000000000000000000000000000000000000000000000000000900480632e1a7d4d146036575b6000565b34600057604e60048080359060200190919050506050565b005b3373ffffffffffffffffffffffffffffffffffffffff166108fc829081150290604051809050600060405180830381858888f19350505050505b5056",
"storage": {}
},
"0x66fdfd05e46126a07465ad24e40cc0597bc1ef31": {
"balance": "0x229ebbb36c3e0f20",
"nonce": "3",
"code": "0x",
"storage": {}
}
},
"config": {
"chainId": 3,
"homesteadBlock": 0,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"byzantiumBlock": 1700000,
"constantinopleBlock": 4230000,
"petersburgBlock": 4939394,
"istanbulBlock": 6485846,
"muirGlacierBlock": 7117117,
"ethash": {}
}
},
"context": {
"number": "24974",
"difficulty": "117067574",
"timestamp": "1479891162",
"gasLimit": "4712388",
"miner": "0xc822ef32e6d26e170b70cf761e204c1806265914"
},
"input": "0xf889038504a81557008301f97e946c06b16512b332e6cd8293a2974872674716ce1880a42e1a7d4d00000000000000000000000000000000000000000000000014d1120d7b1600002aa0e2a6558040c5d72bc59f2fb62a38993a314c849cd22fb393018d2c5af3112095a01bdb6d7ba32263ccc2ecc880d38c49d9f0c5a72d8b7908e3122b31356d349745",
"result": {
"type": "CALL",
"from": "0x66fdfd05e46126a07465ad24e40cc0597bc1ef31",
"to": "0x6c06b16512b332e6cd8293a2974872674716ce18",
"value": "0x0",
"gas": "0x1a466",
"gasUsed": "0x1dc6",
"input": "0x2e1a7d4d00000000000000000000000000000000000000000000000014d1120d7b160000",
"output": "0x",
"calls": []
}
}

0
eth/tracers/testdata/call_tracer_inner_throw_outer_revert.json → eth/tracers/testdata/call_tracer/inner_throw_outer_revert.json vendored
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0
eth/tracers/testdata/call_tracer_oog.json → eth/tracers/testdata/call_tracer/oog.json vendored
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0
eth/tracers/testdata/call_tracer_revert.json → eth/tracers/testdata/call_tracer/revert.json vendored
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0
eth/tracers/testdata/call_tracer_revert_reason.json → eth/tracers/testdata/call_tracer/revert_reason.json vendored
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eth/tracers/testdata/call_tracer/selfdestruct.json vendored Normal file
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@ -0,0 +1,75 @@
{
"context": {
"difficulty": "3502894804",
"gasLimit": "4722976",
"miner": "0x1585936b53834b021f68cc13eeefdec2efc8e724",
"number": "2289806",
"timestamp": "1513601314"
},
"genesis": {
"alloc": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x0",
"code": "0x",
"nonce": "22",
"storage": {}
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"code": "0x61deadff",
"nonce": "1",
"storage": {}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d77678137ac1b775",
"code": "0x",
"nonce": "29072",
"storage": {}
}
},
"config": {
"byzantiumBlock": 1700000,
"chainId": 3,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"ethash": {},
"homesteadBlock": 0
},
"difficulty": "3509749784",
"extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
"gasLimit": "4727564",
"hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440",
"miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
"mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada",
"nonce": "0x4eb12e19c16d43da",
"number": "2289805",
"stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f",
"timestamp": "1513601261",
"totalDifficulty": "7143276353481064"
},
"input": "0xf88b8271908506fc23ac0083015f90943b873a919aa0512d5a0f09e6dcceaa4a6727fafe80a463e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c52aa0bdce0b59e8761854e857fe64015f06dd08a4fbb7624f6094893a79a72e6ad6bea01d9dde033cff7bb235a3163f348a6d7ab8d6b52bc0963a95b91612e40ca766a4",
"result": {
"calls": [
{
"from": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
"gas": "0x0",
"gasUsed": "0x0",
"input": "0x",
"to": "0x000000000000000000000000000000000000dEaD",
"type": "SELFDESTRUCT",
"value": "0x4d87094125a369d9bd5"
}
],
"from": "0xb436ba50d378d4bbc8660d312a13df6af6e89dfb",
"gas": "0x10738",
"gasUsed": "0x7533",
"input": "0x63e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c5",
"output": "0x",
"to": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
"type": "CALL",
"value": "0x0"
}
}

80
eth/tracers/testdata/call_tracer/simple.json vendored Normal file
View File

@ -0,0 +1,80 @@
{
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}
}

0
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58
eth/tracers/testdata/call_tracer_legacy/create.json vendored Normal file
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{
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},
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}
},
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"type": "CREATE",
"value": "0x0"
}
}

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eth/tracers/testdata/call_tracer_inner_create_oog_outer_throw.json → eth/tracers/testdata/call_tracer_legacy/inner_create_oog_outer_throw.json vendored
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eth/tracers/testdata/call_tracer_inner_instafail.json → eth/tracers/testdata/call_tracer_legacy/inner_instafail.json vendored
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81
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eth/tracers/testdata/call_tracer_legacy/oog.json vendored Normal file
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eth/tracers/testdata/call_tracer_legacy/revert.json vendored Normal file
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{
"context": {
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"miner": "0xf4d8e706cfb25c0decbbdd4d2e2cc10c66376a3f",
"number": "2294501",
"timestamp": "1513673601"
},
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},
"0xabbcd5b340c80b5f1c0545c04c987b87310296ae": {
"balance": "0x0",
"code": "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",
"nonce": "1",
"storage": {}
}
},
"config": {
"byzantiumBlock": 1700000,
"chainId": 3,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"ethash": {},
"homesteadBlock": 0
},
"difficulty": "3672229776",
"extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
"gasLimit": "5227619",
"hash": "0xa07b3d6c6bf63f5f981016db9f2d1d93033833f2c17e8bf7209e85f1faf08076",
"miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
"mixHash": "0x806e151ce2817be922e93e8d5921fa0f0d0fd213d6b2b9a3fa17458e74a163d0",
"nonce": "0xbc5d43adc2c30c7d",
"number": "2294500",
"stateRoot": "0xca645b335888352ef9d8b1ef083e9019648180b259026572e3139717270de97d",
"timestamp": "1513673552",
"totalDifficulty": "7160066586979149"
},
"input": "0xf9018b0a8505d21dba00832dc6c094abbcd5b340c80b5f1c0545c04c987b87310296ae80b9012473b40a5c000000000000000000000000400de2e016bda6577407dfc379faba9899bc73ef0000000000000000000000002cc31912b2b0f3075a87b3640923d45a26cef3ee000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000064d79d8e6c7265636f76657279416464726573730000000000000000000000000000000000000000000000000000000000383e3ec32dc0f66d8fe60dbdc2f6815bdf73a988383e3ec32dc0f66d8fe60dbdc2f6815bdf73a988000000000000000000000000000000000000000000000000000000000000000000000000000000001ba0fd659d76a4edbd2a823e324c93f78ad6803b30ff4a9c8bce71ba82798975c70ca06571eecc0b765688ec6c78942c5ee8b585e00988c0141b518287e9be919bc48a",
"result": {
"error": "execution reverted",
"from": "0x0f6cef2b7fbb504782e35aa82a2207e816a2b7a9",
"gas": "0x2d55e8",
"gasUsed": "0xc3",
"input": "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",
"to": "0xabbcd5b340c80b5f1c0545c04c987b87310296ae",
"type": "CALL",
"value": "0x0"
}
}

64
eth/tracers/testdata/call_tracer_legacy/revert_reason.json vendored Normal file
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File diff suppressed because one or more lines are too long

73
eth/tracers/testdata/call_tracer_legacy/selfdestruct.json vendored Normal file
View File

@ -0,0 +1,73 @@
{
"context": {
"difficulty": "3502894804",
"gasLimit": "4722976",
"miner": "0x1585936b53834b021f68cc13eeefdec2efc8e724",
"number": "2289806",
"timestamp": "1513601314"
},
"genesis": {
"alloc": {
"0x0024f658a46fbb89d8ac105e98d7ac7cbbaf27c5": {
"balance": "0x0",
"code": "0x",
"nonce": "22",
"storage": {}
},
"0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe": {
"balance": "0x4d87094125a369d9bd5",
"code": "0x61deadff",
"nonce": "1",
"storage": {}
},
"0xb436ba50d378d4bbc8660d312a13df6af6e89dfb": {
"balance": "0x1780d77678137ac1b775",
"code": "0x",
"nonce": "29072",
"storage": {}
}
},
"config": {
"byzantiumBlock": 1700000,
"chainId": 3,
"daoForkSupport": true,
"eip150Block": 0,
"eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
"eip155Block": 10,
"eip158Block": 10,
"ethash": {},
"homesteadBlock": 0
},
"difficulty": "3509749784",
"extraData": "0x4554482e45544846414e532e4f52472d4641313738394444",
"gasLimit": "4727564",
"hash": "0x609948ac3bd3c00b7736b933248891d6c901ee28f066241bddb28f4e00a9f440",
"miner": "0xbbf5029fd710d227630c8b7d338051b8e76d50b3",
"mixHash": "0xb131e4507c93c7377de00e7c271bf409ec7492767142ff0f45c882f8068c2ada",
"nonce": "0x4eb12e19c16d43da",
"number": "2289805",
"stateRoot": "0xc7f10f352bff82fac3c2999d3085093d12652e19c7fd32591de49dc5d91b4f1f",
"timestamp": "1513601261",
"totalDifficulty": "7143276353481064"
},
"input": "0xf88b8271908506fc23ac0083015f90943b873a919aa0512d5a0f09e6dcceaa4a6727fafe80a463e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c52aa0bdce0b59e8761854e857fe64015f06dd08a4fbb7624f6094893a79a72e6ad6bea01d9dde033cff7bb235a3163f348a6d7ab8d6b52bc0963a95b91612e40ca766a4",
"result": {
"calls": [
{
"from": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
"input": "0x",
"to": "0x000000000000000000000000000000000000dEaD",
"type": "SELFDESTRUCT",
"value": "0x4d87094125a369d9bd5"
}
],
"from": "0xb436ba50d378d4bbc8660d312a13df6af6e89dfb",
"gas": "0x10738",
"gasUsed": "0x7533",
"input": "0x63e4bff40000000000000000000000000024f658a46fbb89d8ac105e98d7ac7cbbaf27c5",
"output": "0x",
"to": "0x3b873a919aa0512d5a0f09e6dcceaa4a6727fafe",
"type": "CALL",
"value": "0x0"
}
}

0
eth/tracers/testdata/call_tracer_simple.json → eth/tracers/testdata/call_tracer_legacy/simple.json vendored
View File

62
eth/tracers/testdata/call_tracer_legacy/throw.json vendored Normal file
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File diff suppressed because one or more lines are too long

235
eth/tracers/tracer.go
View File

@ -284,6 +284,85 @@ func (cw *contractWrapper) pushObject(vm *duktape.Context) {
vm.PutPropString(obj, "getInput")
}
type frame struct {
typ *string
from *common.Address
to *common.Address
input []byte
gas *uint
value *big.Int
}
func newFrame() *frame {
return &frame{
typ: new(string),
from: new(common.Address),
to: new(common.Address),
gas: new(uint),
}
}
func (f *frame) pushObject(vm *duktape.Context) {
obj := vm.PushObject()
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.typ); return 1 })
vm.PutPropString(obj, "getType")
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.from); return 1 })
vm.PutPropString(obj, "getFrom")
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.to); return 1 })
vm.PutPropString(obj, "getTo")
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, f.input); return 1 })
vm.PutPropString(obj, "getInput")
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *f.gas); return 1 })
vm.PutPropString(obj, "getGas")
vm.PushGoFunction(func(ctx *duktape.Context) int {
if f.value != nil {
pushValue(ctx, f.value)
} else {
ctx.PushUndefined()
}
return 1
})
vm.PutPropString(obj, "getValue")
}
type frameResult struct {
gasUsed *uint
output []byte
errorValue *string
}
func newFrameResult() *frameResult {
return &frameResult{
gasUsed: new(uint),
}
}
func (r *frameResult) pushObject(vm *duktape.Context) {
obj := vm.PushObject()
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, *r.gasUsed); return 1 })
vm.PutPropString(obj, "getGasUsed")
vm.PushGoFunction(func(ctx *duktape.Context) int { pushValue(ctx, r.output); return 1 })
vm.PutPropString(obj, "getOutput")
vm.PushGoFunction(func(ctx *duktape.Context) int {
if r.errorValue != nil {
pushValue(ctx, *r.errorValue)
} else {
ctx.PushUndefined()
}
return 1
})
vm.PutPropString(obj, "getError")
}
// Tracer provides an implementation of Tracer that evaluates a Javascript
// function for each VM execution step.
type Tracer struct {
@ -305,6 +384,9 @@ type Tracer struct {
errorValue *string // Swappable error value wrapped by a log accessor
refundValue *uint // Swappable refund value wrapped by a log accessor
frame *frame // Represents entry into call frame. Fields are swappable
frameResult *frameResult // Represents exit from a call frame. Fields are swappable
ctx map[string]interface{} // Transaction context gathered throughout execution
err error // Error, if one has occurred
@ -312,6 +394,8 @@ type Tracer struct {
reason error // Textual reason for the interruption
activePrecompiles []common.Address // Updated on CaptureStart based on given rules
traceSteps bool // When true, will invoke step() on each opcode
traceCallFrames bool // When true, will invoke enter() and exit() js funcs
}
// Context contains some contextual infos for a transaction execution that is not
@ -343,6 +427,8 @@ func New(code string, ctx *Context) (*Tracer, error) {
costValue: new(uint),
depthValue: new(uint),
refundValue: new(uint),
frame: newFrame(),
frameResult: newFrameResult(),
}
if ctx.BlockHash != (common.Hash{}) {
tracer.ctx["blockHash"] = ctx.BlockHash
@ -450,9 +536,7 @@ func New(code string, ctx *Context) (*Tracer, error) {
}
tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself
if !tracer.vm.GetPropString(tracer.tracerObject, "step") {
return nil, fmt.Errorf("trace object must expose a function step()")
}
hasStep := tracer.vm.GetPropString(tracer.tracerObject, "step")
tracer.vm.Pop()
if !tracer.vm.GetPropString(tracer.tracerObject, "fault") {
@ -465,6 +549,23 @@ func New(code string, ctx *Context) (*Tracer, error) {
}
tracer.vm.Pop()
hasEnter := tracer.vm.GetPropString(tracer.tracerObject, "enter")
tracer.vm.Pop()
hasExit := tracer.vm.GetPropString(tracer.tracerObject, "exit")
tracer.vm.Pop()
if hasEnter != hasExit {
return nil, fmt.Errorf("trace object must expose either both or none of enter() and exit()")
}
if !hasStep {
// If there's no step function, the enter and exit must be present
if !hasEnter {
return nil, fmt.Errorf("trace object must expose either step() or both enter() and exit()")
}
}
tracer.traceCallFrames = hasEnter
tracer.traceSteps = hasStep
// Tracer is valid, inject the big int library to access large numbers
tracer.vm.EvalString(bigIntegerJS)
tracer.vm.PutGlobalString("bigInt")
@ -513,6 +614,12 @@ func New(code string, ctx *Context) (*Tracer, error) {
tracer.vm.PutPropString(tracer.stateObject, "log")
tracer.frame.pushObject(tracer.vm)
tracer.vm.PutPropString(tracer.stateObject, "frame")
tracer.frameResult.pushObject(tracer.vm)
tracer.vm.PutPropString(tracer.stateObject, "frameResult")
tracer.dbWrapper.pushObject(tracer.vm)
tracer.vm.PutPropString(tracer.stateObject, "db")
@ -594,6 +701,9 @@ func (jst *Tracer) CaptureStart(env *vm.EVM, from common.Address, to common.Addr
// CaptureState implements the Tracer interface to trace a single step of VM execution.
func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
if !jst.traceSteps {
return
}
if jst.err != nil {
return
}
@ -650,41 +760,70 @@ func (jst *Tracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, er
}
}
// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
func (jst *Tracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
if !jst.traceCallFrames {
return
}
if jst.err != nil {
return
}
// If tracing was interrupted, set the error and stop
if atomic.LoadUint32(&jst.interrupt) > 0 {
jst.err = jst.reason
return
}
*jst.frame.typ = typ.String()
*jst.frame.from = from
*jst.frame.to = to
jst.frame.input = common.CopyBytes(input)
*jst.frame.gas = uint(gas)
jst.frame.value = nil
if value != nil {
jst.frame.value = new(big.Int).SetBytes(value.Bytes())
}
if _, err := jst.call(true, "enter", "frame"); err != nil {
jst.err = wrapError("enter", err)
}
}
// CaptureExit is called when EVM exits a scope, even if the scope didn't
// execute any code.
func (jst *Tracer) CaptureExit(output []byte, gasUsed uint64, err error) {
if !jst.traceCallFrames {
return
}
if jst.err != nil {
return
}
// If tracing was interrupted, set the error and stop
if atomic.LoadUint32(&jst.interrupt) > 0 {
jst.err = jst.reason
return
}
jst.frameResult.output = common.CopyBytes(output)
*jst.frameResult.gasUsed = uint(gasUsed)
jst.frameResult.errorValue = nil
if err != nil {
jst.frameResult.errorValue = new(string)
*jst.frameResult.errorValue = err.Error()
}
if _, err := jst.call(true, "exit", "frameResult"); err != nil {
jst.err = wrapError("exit", err)
}
}
// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error
func (jst *Tracer) GetResult() (json.RawMessage, error) {
// Transform the context into a JavaScript object and inject into the state
obj := jst.vm.PushObject()
for key, val := range jst.ctx {
switch val := val.(type) {
case uint64:
jst.vm.PushUint(uint(val))
case string:
jst.vm.PushString(val)
case []byte:
ptr := jst.vm.PushFixedBuffer(len(val))
copy(makeSlice(ptr, uint(len(val))), val)
case common.Address:
ptr := jst.vm.PushFixedBuffer(20)
copy(makeSlice(ptr, 20), val[:])
case *big.Int:
pushBigInt(val, jst.vm)
case int:
jst.vm.PushInt(val)
case common.Hash:
ptr := jst.vm.PushFixedBuffer(32)
copy(makeSlice(ptr, 32), val[:])
default:
panic(fmt.Sprintf("unsupported type: %T", val))
}
jst.vm.PutPropString(obj, key)
jst.addToObj(obj, key, val)
}
jst.vm.PutPropString(jst.stateObject, "ctx")
@ -699,3 +838,35 @@ func (jst *Tracer) GetResult() (json.RawMessage, error) {
return result, jst.err
}
// addToObj pushes a field to a JS object.
func (jst *Tracer) addToObj(obj int, key string, val interface{}) {
pushValue(jst.vm, val)
jst.vm.PutPropString(obj, key)
}
func pushValue(ctx *duktape.Context, val interface{}) {
switch val := val.(type) {
case uint64:
ctx.PushUint(uint(val))
case string:
ctx.PushString(val)
case []byte:
ptr := ctx.PushFixedBuffer(len(val))
copy(makeSlice(ptr, uint(len(val))), val)
case common.Address:
ptr := ctx.PushFixedBuffer(20)
copy(makeSlice(ptr, 20), val[:])
case *big.Int:
pushBigInt(val, ctx)
case int:
ctx.PushInt(val)
case uint:
ctx.PushUint(val)
case common.Hash:
ptr := ctx.PushFixedBuffer(32)
copy(makeSlice(ptr, 32), val[:])
default:
panic(fmt.Sprintf("unsupported type: %T", val))
}
}

32
eth/tracers/tracer_test.go
View File

@ -236,3 +236,35 @@ func TestIsPrecompile(t *testing.T) {
t.Errorf("Tracer should consider blake2f as precompile in istanbul")
}
}
func TestEnterExit(t *testing.T) {
// test that either both or none of enter() and exit() are defined
if _, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}}", new(Context)); err == nil {
t.Fatal("tracer creation should've failed without exit() definition")
}
if _, err := New("{step: function() {}, fault: function() {}, result: function() { return null; }, enter: function() {}, exit: function() {}}", new(Context)); err != nil {
t.Fatal(err)
}
// test that the enter and exit method are correctly invoked and the values passed
tracer, err := New("{enters: 0, exits: 0, enterGas: 0, gasUsed: 0, step: function() {}, fault: function() {}, result: function() { return {enters: this.enters, exits: this.exits, enterGas: this.enterGas, gasUsed: this.gasUsed} }, enter: function(frame) { this.enters++; this.enterGas = frame.getGas(); }, exit: function(res) { this.exits++; this.gasUsed = res.getGasUsed(); }}", new(Context))
if err != nil {
t.Fatal(err)
}
scope := &vm.ScopeContext{
Contract: vm.NewContract(&account{}, &account{}, big.NewInt(0), 0),
}
tracer.CaptureEnter(vm.CALL, scope.Contract.Caller(), scope.Contract.Address(), []byte{}, 1000, new(big.Int))
tracer.CaptureExit([]byte{}, 400, nil)
have, err := tracer.GetResult()
if err != nil {
t.Fatal(err)
}
want := `{"enters":1,"exits":1,"enterGas":1000,"gasUsed":400}`
if string(have) != want {
t.Errorf("Number of invocations of enter() and exit() is wrong. Have %s, want %s\n", have, want)
}
}

90
eth/tracers/tracers_test.go
View File

@ -203,21 +203,25 @@ func TestPrestateTracerCreate2(t *testing.T) {
// Iterates over all the input-output datasets in the tracer test harness and
// runs the JavaScript tracers against them.
func TestCallTracer(t *testing.T) {
files, err := ioutil.ReadDir("testdata")
func TestCallTracerLegacy(t *testing.T) {
testCallTracer("callTracerLegacy", "call_tracer_legacy", t)
}
func testCallTracer(tracer string, dirPath string, t *testing.T) {
files, err := ioutil.ReadDir(filepath.Join("testdata", dirPath))
if err != nil {
t.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasPrefix(file.Name(), "call_tracer_") {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
t.Run(camel(strings.TrimSuffix(strings.TrimPrefix(file.Name(), "call_tracer_"), ".json")), func(t *testing.T) {
t.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(t *testing.T) {
t.Parallel()
// Call tracer test found, read if from disk
blob, err := ioutil.ReadFile(filepath.Join("testdata", file.Name()))
blob, err := ioutil.ReadFile(filepath.Join("testdata", dirPath, file.Name()))
if err != nil {
t.Fatalf("failed to read testcase: %v", err)
}
@ -248,7 +252,7 @@ func TestCallTracer(t *testing.T) {
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
// Create the tracer, the EVM environment and run it
tracer, err := New("callTracer", new(Context))
tracer, err := New(tracer, new(Context))
if err != nil {
t.Fatalf("failed to create call tracer: %v", err)
}
@ -283,6 +287,10 @@ func TestCallTracer(t *testing.T) {
}
}
func TestCallTracer(t *testing.T) {
testCallTracer("callTracer", "call_tracer", t)
}
// jsonEqual is similar to reflect.DeepEqual, but does a 'bounce' via json prior to
// comparison
func jsonEqual(x, y interface{}) bool {
@ -378,3 +386,73 @@ func BenchmarkTransactionTrace(b *testing.B) {
tracer.Reset()
}
}
func BenchmarkTracers(b *testing.B) {
files, err := ioutil.ReadDir(filepath.Join("testdata", "call_tracer"))
if err != nil {
b.Fatalf("failed to retrieve tracer test suite: %v", err)
}
for _, file := range files {
if !strings.HasSuffix(file.Name(), ".json") {
continue
}
file := file // capture range variable
b.Run(camel(strings.TrimSuffix(file.Name(), ".json")), func(b *testing.B) {
blob, err := ioutil.ReadFile(filepath.Join("testdata", "call_tracer", file.Name()))
if err != nil {
b.Fatalf("failed to read testcase: %v", err)
}
test := new(callTracerTest)
if err := json.Unmarshal(blob, test); err != nil {
b.Fatalf("failed to parse testcase: %v", err)
}
benchTracer("callTracer", test, b)
})
}
}
func benchTracer(tracerName string, test *callTracerTest, b *testing.B) {
// Configure a blockchain with the given prestate
tx := new(types.Transaction)
if err := rlp.DecodeBytes(common.FromHex(test.Input), tx); err != nil {
b.Fatalf("failed to parse testcase input: %v", err)
}
signer := types.MakeSigner(test.Genesis.Config, new(big.Int).SetUint64(uint64(test.Context.Number)))
msg, err := tx.AsMessage(signer, nil)
if err != nil {
b.Fatalf("failed to prepare transaction for tracing: %v", err)
}
origin, _ := signer.Sender(tx)
txContext := vm.TxContext{
Origin: origin,
GasPrice: tx.GasPrice(),
}
context := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: test.Context.Miner,
BlockNumber: new(big.Int).SetUint64(uint64(test.Context.Number)),
Time: new(big.Int).SetUint64(uint64(test.Context.Time)),
Difficulty: (*big.Int)(test.Context.Difficulty),
GasLimit: uint64(test.Context.GasLimit),
}
_, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), test.Genesis.Alloc, false)
// Create the tracer, the EVM environment and run it
tracer, err := New(tracerName, new(Context))
if err != nil {
b.Fatalf("failed to create call tracer: %v", err)
}
evm := vm.NewEVM(context, txContext, statedb, test.Genesis.Config, vm.Config{Debug: true, Tracer: tracer})
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
snap := statedb.Snapshot()
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
if _, err = st.TransitionDb(); err != nil {
b.Fatalf("failed to execute transaction: %v", err)
}
statedb.RevertToSnapshot(snap)
}
}