const (
	// CounterMT - represents a counter metric.
	CounterMT MetricType = iota
	// GaugeMT - represents a gauge metric.
	GaugeMT
	// HistogramMT - represents a histogram metric.
	HistogramMT
	// rangeL - represents a range label.
	rangeL = "range"
)

func (mt MetricType) String() string {
	switch mt {
	case CounterMT:
		return "counter"
	case GaugeMT:
		return "gauge"
	case HistogramMT:
		return "histogram"

		bucketL)
	bucketReplLatencyMsMD = NewGaugeMD(bucketReplLatencyMs,
		"Replication latency on a bucket in milliseconds",
		bucketL, operationL, rangeL, targetArnL)
	bucketReplProxiedDeleteTaggingRequestsTotalMD = NewCounterMD(bucketReplProxiedDeleteTaggingRequestsTotal,
		"Number of DELETE tagging requests proxied to replication target",
		bucketL)

	return fd.readLock()
}

// ReadUnlock wraps FD.readUnlock.
func (fd *FD) ReadUnlock() {
	fd.readUnlock()
}

func isHangup(err error) bool {
	return err != nil && stringslite.HasSuffix(err.Error(), "Hangup")
}

func isInterrupted(err error) bool {
	return err != nil && stringslite.HasSuffix(err.Error(), "interrupted")
}

// IsPollDescriptor reports whether fd is the descriptor being used by the poller.

 * <tr>
 * <td width="20%"><b>URL</b></td>
 * <td><b>Description</b></td>
 * </tr>
 * 
 * <tr>
 * <td width="20%"><code>smb://users-nyc;miallen:mypass@angus/tmp/</code></td>
 * <td>
 * This URL references a share called <code>tmp</code> on the server
 * <code>angus</code> as user <code>miallen</code> who's password is
 * <code>mypass</code>.
 * </td>
 * </tr>
 * 
 * <tr>
 * <td width="20%">

	{133, "EHWPOISON", "memory page has hardware error"},
}

// Signal table
var signalList = [...]struct {
	num  syscall.Signal
	name string
	desc string
}{
	{1, "SIGHUP", "hangup"},
	{2, "SIGINT", "interrupt"},
	{3, "SIGQUIT", "quit"},
	{4, "SIGILL", "illegal instruction"},
	{5, "SIGTRAP", "trace/breakpoint trap"},
	{6, "SIGABRT", "aborted"},
	{7, "SIGBUS", "bus error"},

	{133, "EHWPOISON", "memory page has hardware error"},
}

// Signal table
var signalList = [...]struct {
	num  syscall.Signal
	name string
	desc string
}{
	{1, "SIGHUP", "hangup"},
	{2, "SIGINT", "interrupt"},
	{3, "SIGQUIT", "quit"},
	{4, "SIGILL", "illegal instruction"},
	{5, "SIGTRAP", "trace/breakpoint trap"},
	{6, "SIGABRT", "aborted"},
	{7, "SIGBUS", "bus error"},

	{133, "EHWPOISON", "memory page has hardware error"},
}

// Signal table
var signalList = [...]struct {
	num  syscall.Signal
	name string
	desc string
}{
	{1, "SIGHUP", "hangup"},
	{2, "SIGINT", "interrupt"},
	{3, "SIGQUIT", "quit"},
	{4, "SIGILL", "illegal instruction"},
	{5, "SIGTRAP", "trace/breakpoint trap"},
	{6, "SIGABRT", "aborted"},
	{7, "SIGBUS", "bus error"},

	{1161, "EDC8161I", "The file system cannot currently be moved."},
}

// Signal table
var signalList = [...]struct {
	num  Signal
	name string
	desc string
}{
	{1, "SIGHUP", "hangup"},
	{2, "SIGINT", "interrupt"},
	{3, "SIGABT", "aborted"},
	{4, "SIGILL", "illegal instruction"},
	{5, "SIGPOLL", "pollable event"},
	{6, "SIGURG", "urgent I/O condition"},
	{7, "SIGSTOP", "stop process"},

	148: "no route to host",
	149: "operation already in progress",
	150: "operation now in progress",
	151: "stale NFS file handle",
}

// Signal table
var signals = [...]string{
	1:  "hangup",
	2:  "interrupt",
	3:  "quit",
	4:  "illegal Instruction",
	5:  "trace/Breakpoint Trap",
	6:  "abort",
	7:  "emulation Trap",
	8:  "arithmetic Exception",
	9:  "killed",
	10: "bus Error",

	const backendResponse = "I am the backend"
	const backendStatus = 404
	backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method == "GET" && r.FormValue("mode") == "hangup" {
			c, _, _ := w.(http.Hijacker).Hijack()
			c.Close()
			return
		}
		if len(r.TransferEncoding) > 0 {
			t.Errorf("backend got unexpected TransferEncoding: %v", r.TransferEncoding)
		}