for _, r := range registries {
		counter := atomic.NewInt32(0)
		clusterID := r.Cluster()
		if clusterID == "cluster1" {
			counter = registry1Counter
		}
		if clusterID == "cluster2" {
			counter = registry2Counter
		}
		ctrl.AppendServiceHandlerForCluster(clusterID, func(_, curr *model.Service, event model.Event) {
			counter.Add(1)
		})
		ctrl.AddRegistry(r)
	}

import (
	"unsafe"
)

// coverage returns a []byte containing unique 8-bit counters for each edge of
// the instrumented source code. This coverage data will only be generated if
// `-d=libfuzzer` is set at build time. This can be used to understand the code
// coverage of a test execution.
func coverage() []byte {
	addr := unsafe.Pointer(&_counters)
	size := uintptr(unsafe.Pointer(&_ecounters)) - uintptr(addr)

func setCounterStmt(f *File, counter string) string {
	return fmt.Sprintf("%s = 1", counter)
}

// incCounterStmt returns the expression: __count[23]++.
func incCounterStmt(f *File, counter string) string {
	return fmt.Sprintf("%s++", counter)
}

// atomicCounterStmt returns the expression: atomic.AddUint32(&__count[23], 1)
func atomicCounterStmt(f *File, counter string) string {

	// eliminates redundant counters).
	Strategy string

	// Prefix assigned to the names of counter variables generated
	// during instrumentation by cmd/cover.
	CounterPrefix string

	// Name chosen for the package ID variable generated during
	// instrumentation.
	PkgIdVar string

	// Counter mode (e.g. set/count/atomic)
	CounterMode string

	// Counter granularity (perblock or perfunc).

change in breaking ways as the telemetry integration is refined.

## Notable Packages

- The [x/telemetry/counter](https://pkg.go.dev/golang.org/x/telemetry/counter)
  package provides a library for instrumenting programs with counters and stack
  reports.
- The [x/telemetry/upload](https://pkg.go.dev/golang.org/x/telemetry/upload)

			// not a counter file
			continue
		}
		counters, _, err := countertest.ReadFile(filepath.Join(localDir, dirent.Name()))
		if err != nil {
			t.Fatalf("reading counter file: %v", err)
		}
		for k, v := range counters {
			totals[k] += v
		}
	}

	return totals
}

func checkCounters(t *testing.T, telemetryDir string) {
	counters := readCounters(t, telemetryDir)

	t.Run("gcm unsafe", func(t *testing.T) {
		testGCMNonce(t, newGCMTransformerWithUniqueKeyUnsafeTest, 0, func(i int, nonce []byte) {
			counter := binary.LittleEndian.Uint64(nonce)
			if uint64(i+1) != counter { // add one because the counter starts at 1, not 0
				t.Errorf("counter nonce is invalid: want %d, got %d", i+1, counter)
			}
		})
	})

	t.Run("gcm extended nonce", func(t *testing.T) {

	if err != nil {
		klog.ErrorS(err, "Unable to get packetsReceivedPerSecond perf counter data")
		return nil, err
	}

	packetsSentPerSecondData, err := n.packetsSentPerSecondCounter.getDataList()
	if err != nil {
		klog.ErrorS(err, "Unable to get packetsSentPerSecond perf counter data")
		return nil, err
	}

	bytesReceivedPerSecondData, err := n.bytesReceivedPerSecondCounter.getDataList()

// In theory, we shouldn't need this file at all: if the binary was built
// without coverage, then _counters and _ecounters should have the same address.
// However, this caused an init failure on aix/ppc64, so it's disabled here.

// coverage returns a []byte containing unique 8-bit counters for each edge of
// the instrumented source code. This coverage data will only be generated if

  /**
   * Multiple threads using same array of counters successfully update a number of times equal to
   * total count
   */
  public void testCountingInMultipleThreads() throws InterruptedException {
    final AtomicDoubleArray aa = new AtomicDoubleArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
      aa.set(i, (double) COUNTDOWN);
    }
    Counter c1 = new Counter(aa);
    Counter c2 = new Counter(aa);