if b {
		*t |= other
	}
}

// Mask returns the mask as a uint64.
func (t Mask) Mask() uint64 {
	return uint64(t)
}

// Maskable implementations must return their mask as a 64 bit uint.
type Maskable interface {
	Mask() uint64

func OpenFileDirectIO(filePath string, flag int, perm os.FileMode) (*os.File, error) {
	return directio.OpenFile(filePath, flag, perm)
}

// DisableDirectIO - disables directio mode.
func DisableDirectIO(f *os.File) error {
	fd := f.Fd()
	_, err := unix.FcntlInt(fd, unix.F_NOCACHE, 0)
	return err
}

// AlignedBlock - pass through to directio implementation.
func AlignedBlock(blockSize int) []byte {

		switch metric.Description.Name {
		case tierRequestsSuccess:
			succ += metric.Value
		case tierRequestsFailure:
			fail += metric.Value
		}
	}
	if int(succ) != expSuccess {
		t.Fatalf("Expected %d successes but got %f", expSuccess, succ)
	}
	if int(fail) != expFailure {
		t.Fatalf("Expected %d failures but got %f", expFailure, fail)
	}

    for (int i = 0; i < expected.size(); ++i) {
      ASSERT_EQ(expected[i], data[i]) << "Different data at index " << i;
    }
  }

  std::vector<TF_Output> ToOutput(const std::vector<TF_Operation*> ops) {
    std::vector<TF_Output> out;
    for (auto op : ops) {
      out.push_back({op, 0});
    }
    return out;
  }

  void Define(int num_opers, const std::vector<TF_Operation*>& opers,

				t.Fatalf("expected = %s, got: %s", r.entries, entries)
			}
		}
	}
}

func TestReadDirN(t *testing.T) {
	testCases := []struct {
		numFiles    int
		n           int
		expectedNum int
	}{
		{0, 0, 0},
		{0, 1, 0},
		{1, 0, 0},
		{0, -1, 0},
		{1, -1, 1},
		{10, -1, 10},
		{1, 1, 1},
		{2, 1, 1},
		{10, 9, 9},
		{10, 10, 10},
		{10, 11, 10},

	srcCfg := getServerSystemCfg()
	clnts := newBootstrapRESTClients(endpointServerPools, gm)
	var onlineServers int
	var offlineEndpoints []error
	var incorrectConfigs []error
	var retries int
	var mu sync.Mutex
	for onlineServers < len(clnts)/2 {
		var wg sync.WaitGroup
		wg.Add(len(clnts))
		onlineServers = 0
		for _, clnt := range clnts {

func BenchmarkRequests(b *testing.B) {
	for n := 2; n <= 32; n *= 2 {
		b.Run("servers="+strconv.Itoa(n), func(b *testing.B) {
			benchmarkGridRequests(b, n)
		})
	}
}

func benchmarkGridRequests(b *testing.B, n int) {
	defer testlogger.T.SetErrorTB(b)()
	errFatal := func(err error) {
		b.Helper()
		if err != nil {
			b.Fatal(err)
		}
	}

type s3Error struct {
	code       string
	message    string
	statusCode int
	cause      error
}

func (err *s3Error) Cause() error {
	return err.cause
}

func (err *s3Error) ErrorCode() string {
	return err.code
}

func (err *s3Error) ErrorMessage() string {
	return err.message
}

func (err *s3Error) HTTPStatusCode() int {
	return err.statusCode
}

func (err *s3Error) Error() string {

		}
	}

	b.items = append(b.items, item)
	return nil
}

// Len returns the no of items in the batch
func (b *Batch[_]) Len() int {
	b.Lock()
	defer b.Unlock()

	return len(b.items)
}

func (b *Batch[_]) isFull() bool {
	return len(b.items) >= int(b.limit)
}

func (b *Batch[I]) commit() error {
	switch len(b.items) {
	case 0:
		return nil
	case 1:
		_, err := b.store.Put(b.items[0])

	"golang.org/x/sys/unix"
)

// ODirectPlatform indicates if the platform supports O_DIRECT
const ODirectPlatform = true

// OpenFileDirectIO - bypass kernel cache.
func OpenFileDirectIO(filePath string, flag int, perm os.FileMode) (*os.File, error) {
	return directio.OpenFile(filePath, flag, perm)
}

// DisableDirectIO - disables directio mode.
func DisableDirectIO(f *os.File) error {
	fd := f.Fd()