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eth/tracers: use atomic type (#27031)
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Use the new atomic types in package eth/tracers

---------

Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
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@s7v7nislands @holiman @s1na
3 people authored Apr 4, 2023
1 parent b4dcd1a commit 2adce0b
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Showing 5 changed files with 28 additions and 22 deletions.
16 changes: 9 additions & 7 deletions eth/tracers/api_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -835,8 +835,8 @@ func TestTraceChain(t *testing.T) {
signer := types.HomesteadSigner{}

var (
ref uint32 // total refs has made
rel uint32 // total rels has made
ref atomic.Uint32 // total refs has made
rel atomic.Uint32 // total rels has made
nonce uint64
)
backend := newTestBackend(t, genBlocks, genesis, func(i int, b *core.BlockGen) {
Expand All @@ -849,8 +849,8 @@ func TestTraceChain(t *testing.T) {
nonce += 1
}
})
backend.refHook = func() { atomic.AddUint32(&ref, 1) }
backend.relHook = func() { atomic.AddUint32(&rel, 1) }
backend.refHook = func() { ref.Add(1) }
backend.relHook = func() { rel.Add(1) }
api := NewAPI(backend)

single := `{"result":{"gas":21000,"failed":false,"returnValue":"","structLogs":[]}}`
Expand All @@ -863,7 +863,8 @@ func TestTraceChain(t *testing.T) {
{10, 20, nil}, // the middle chain range, blocks [11, 20]
}
for _, c := range cases {
ref, rel = 0, 0 // clean up the counters
ref.Store(0)
rel.Store(0)

from, _ := api.blockByNumber(context.Background(), rpc.BlockNumber(c.start))
to, _ := api.blockByNumber(context.Background(), rpc.BlockNumber(c.end))
Expand All @@ -888,8 +889,9 @@ func TestTraceChain(t *testing.T) {
if next != c.end+1 {
t.Error("Missing tracing block")
}
if ref != rel {
t.Errorf("Ref and deref actions are not equal, ref %d rel %d", ref, rel)

if nref, nrel := ref.Load(), rel.Load(); nref != nrel {
t.Errorf("Ref and deref actions are not equal, ref %d rel %d", nref, nrel)
}
}
}
8 changes: 4 additions & 4 deletions eth/tracers/logger/logger.go
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Original file line number Diff line number Diff line change
Expand Up @@ -116,8 +116,8 @@ type StructLogger struct {
gasLimit uint64
usedGas uint64

interrupt uint32 // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
interrupt atomic.Bool // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
}

// NewStructLogger returns a new logger
Expand Down Expand Up @@ -149,7 +149,7 @@ func (l *StructLogger) CaptureStart(env *vm.EVM, from common.Address, to common.
// CaptureState also tracks SLOAD/SSTORE ops to track storage change.
func (l *StructLogger) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
// If tracing was interrupted, set the error and stop
if atomic.LoadUint32(&l.interrupt) > 0 {
if l.interrupt.Load() {
return
}
// check if already accumulated the specified number of logs
Expand Down Expand Up @@ -258,7 +258,7 @@ func (l *StructLogger) GetResult() (json.RawMessage, error) {
// Stop terminates execution of the tracer at the first opportune moment.
func (l *StructLogger) Stop(err error) {
l.reason = err
atomic.StoreUint32(&l.interrupt, 1)
l.interrupt.Store(true)
}

func (l *StructLogger) CaptureTxStart(gasLimit uint64) {
Expand Down
6 changes: 3 additions & 3 deletions eth/tracers/native/4byte.go
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ func init() {
type fourByteTracer struct {
noopTracer
ids map[string]int // ids aggregates the 4byte ids found
interrupt uint32 // Atomic flag to signal execution interruption
interrupt atomic.Bool // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
activePrecompiles []common.Address // Updated on CaptureStart based on given rules
}
Expand Down Expand Up @@ -93,7 +93,7 @@ func (t *fourByteTracer) CaptureStart(env *vm.EVM, from common.Address, to commo
// CaptureEnter is called when EVM enters a new scope (via call, create or selfdestruct).
func (t *fourByteTracer) CaptureEnter(op vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
// Skip if tracing was interrupted
if atomic.LoadUint32(&t.interrupt) > 0 {
if t.interrupt.Load() {
return
}
if len(input) < 4 {
Expand Down Expand Up @@ -124,7 +124,7 @@ func (t *fourByteTracer) GetResult() (json.RawMessage, error) {
// Stop terminates execution of the tracer at the first opportune moment.
func (t *fourByteTracer) Stop(err error) {
t.reason = err
atomic.StoreUint32(&t.interrupt, 1)
t.interrupt.Store(true)
}

func bytesToHex(s []byte) string {
Expand Down
10 changes: 5 additions & 5 deletions eth/tracers/native/call.go
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Original file line number Diff line number Diff line change
Expand Up @@ -102,8 +102,8 @@ type callTracer struct {
callstack []callFrame
config callTracerConfig
gasLimit uint64
interrupt uint32 // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
interrupt atomic.Bool // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
}

type callTracerConfig struct {
Expand Down Expand Up @@ -161,7 +161,7 @@ func (t *callTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, sco
return
}
// Skip if tracing was interrupted
if atomic.LoadUint32(&t.interrupt) > 0 {
if t.interrupt.Load() {
return
}
switch op {
Expand Down Expand Up @@ -197,7 +197,7 @@ func (t *callTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.
return
}
// Skip if tracing was interrupted
if atomic.LoadUint32(&t.interrupt) > 0 {
if t.interrupt.Load() {
return
}

Expand Down Expand Up @@ -262,7 +262,7 @@ func (t *callTracer) GetResult() (json.RawMessage, error) {
// Stop terminates execution of the tracer at the first opportune moment.
func (t *callTracer) Stop(err error) {
t.reason = err
atomic.StoreUint32(&t.interrupt, 1)
t.interrupt.Store(true)
}

// clearFailedLogs clears the logs of a callframe and all its children
Expand Down
10 changes: 7 additions & 3 deletions eth/tracers/native/prestate.go
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Original file line number Diff line number Diff line change
Expand Up @@ -62,8 +62,8 @@ type prestateTracer struct {
to common.Address
gasLimit uint64 // Amount of gas bought for the whole tx
config prestateTracerConfig
interrupt uint32 // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
interrupt atomic.Bool // Atomic flag to signal execution interruption
reason error // Textual reason for the interruption
created map[common.Address]bool
deleted map[common.Address]bool
}
Expand Down Expand Up @@ -136,6 +136,10 @@ func (t *prestateTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64,
if err != nil {
return
}
// Skip if tracing was interrupted
if t.interrupt.Load() {
return
}
stack := scope.Stack
stackData := stack.Data()
stackLen := len(stackData)
Expand Down Expand Up @@ -259,7 +263,7 @@ func (t *prestateTracer) GetResult() (json.RawMessage, error) {
// Stop terminates execution of the tracer at the first opportune moment.
func (t *prestateTracer) Stop(err error) {
t.reason = err
atomic.StoreUint32(&t.interrupt, 1)
t.interrupt.Store(true)
}

// lookupAccount fetches details of an account and adds it to the prestate
Expand Down

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