chore: use sync/atomic types

das/daser.go

@@ -41,7 +41,7 @@ type DASer struct {
 
 	cancel         context.CancelFunc
 	subscriberDone chan struct{}
-	running        int32
+	running        atomic.Int32
 }
 
 type (
@@ -85,7 +85,7 @@ func NewDASer(
 
 // Start initiates subscription for new ExtendedHeaders and spawns a sampling routine.
 func (d *DASer) Start(ctx context.Context) error {
-	if !atomic.CompareAndSwapInt32(&d.running, 0, 1) {
+	if !d.running.CompareAndSwap(0, 1) {
 		return errors.New("da: DASer already started")
 	}
 
@@ -124,7 +124,7 @@ func (d *DASer) Start(ctx context.Context) error {
 
 // Stop stops sampling.
 func (d *DASer) Stop(ctx context.Context) error {
-	if !atomic.CompareAndSwapInt32(&d.running, 1, 0) {
+	if !d.running.CompareAndSwap(1, 0) {
 		return nil
 	}
 

das/daser_test.go

@@ -209,7 +209,7 @@ func TestDASer_stopsAfter_BEFP(t *testing.T) {
 		require.NoError(t, res)
 	}
 	// wait for manager to finish catchup
-	require.True(t, daser.running == 0)
+	require.True(t, daser.running.Load() == 0)
 }
 
 func TestDASerSampleTimeout(t *testing.T) {

das/metrics.go

@@ -28,7 +28,7 @@ type metrics struct {
 	getHeaderTime metric.Float64Histogram
 	newHead       metric.Int64Counter
 
-	lastSampledTS uint64
+	lastSampledTS atomic.Uint64
 
 	clientReg metric.Registration
 }
@@ -113,7 +113,7 @@ func (d *DASer) InitMetrics() error {
 		observer.ObserveInt64(networkHead, int64(stats.NetworkHead))
 		observer.ObserveInt64(sampledChainHead, int64(stats.SampledChainHead))
 
-		if ts := atomic.LoadUint64(&d.sampler.metrics.lastSampledTS); ts != 0 {
+		if ts := d.sampler.metrics.lastSampledTS.Load(); ts != 0 {
 			observer.ObserveInt64(lastSampledTS, int64(ts))
 		}
 
@@ -171,7 +171,7 @@ func (m *metrics) observeSample(
 			attribute.String(jobTypeLabel, string(jobType)),
 		))
 
-	atomic.StoreUint64(&m.lastSampledTS, uint64(time.Now().UTC().Unix()))
+	m.lastSampledTS.Store(uint64(time.Now().UTC().Unix()))
 }
 
 // observeGetHeader records the time it took to get a header from the header store.

share/eds/retriever.go

@@ -115,7 +115,7 @@ type retrievalSession struct {
 	// https://github.com/celestiaorg/rsmt2d/issues/135
 	squareQuadrants  []*quadrant
 	squareCellsLks   [][]sync.Mutex
-	squareCellsCount uint32
+	squareCellsCount atomic.Uint32
 	squareSig        chan struct{}
 	squareDn         chan struct{}
 	squareLk         sync.RWMutex
@@ -319,7 +319,7 @@ func (rs *retrievalSession) doRequest(ctx context.Context, q *quadrant) {
 				//  but it is totally fine for the happy case and for now.
 				//  The earlier we correctly know that we have the full square - the earlier
 				//  we cancel ongoing requests - the less data is being wastedly transferred.
-				if atomic.AddUint32(&rs.squareCellsCount, 1) >= uint32(size*size) {
+				if rs.squareCellsCount.Add(1) >= uint32(size*size) {
 					select {
 					case rs.squareSig <- struct{}{}:
 					default:

share/ipld/get.go

@@ -201,15 +201,15 @@ func GetProof(
 // when fully done.
 type chanGroup struct {
 	jobs    chan job
-	counter int64
+	counter atomic.Int64
 }
 
 func (w *chanGroup) add(count int64) {
-	atomic.AddInt64(&w.counter, count)
+	w.counter.Add(count)
 }
 
 func (w *chanGroup) done() {
-	numRemaining := atomic.AddInt64(&w.counter, -1)
+	numRemaining := w.counter.Add(-1)
 
 	// Close channel if this job was the last one
 	if numRemaining == 0 {