for i := 0; i < int(nevents); i++ {
		e := &evts[i]
		if e.typ == eventtypeClock {
			continue
		}

		hangup := e.fdReadwrite.flags&fdReadwriteHangup != 0
		var mode int32
		if e.typ == eventtypeFdRead || e.error != 0 || hangup {
			mode += 'r'
		}
		if e.typ == eventtypeFdWrite || e.error != 0 || hangup {
			mode += 'w'
		}
		if mode != 0 {
			pd := (*pollDesc)(unsafe.Pointer(uintptr(e.userdata)))

}

func (ln *TCPListener) close() error {
	if err := ln.fd.pfd.Close(); err != nil {
		return err
	}
	if _, err := ln.fd.ctl.WriteString("hangup"); err != nil {
		ln.fd.ctl.Close()
		return err
	}
	if err := ln.fd.ctl.Close(); err != nil {
		return err
	}
	return nil
}

func (ln *TCPListener) file() (*os.File, error) {
	f, err := ln.dup()

	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.

	SIGWINCH
	SIGPOLL
	SIGPWR
	SIGSYS
)

func (s Signal) Signal() {}

func (s Signal) String() string {
	switch s {
	case SIGNONE:
		return "no signal"
	case SIGHUP:
		return "hangup"
	case SIGINT:
		return "interrupt"
	case SIGQUIT:
		return "quit"
	case SIGILL:
		return "illegal instruction"
	case SIGTRAP:
		return "trace/breakpoint trap"
	case SIGABRT:
		return "abort"

	// If we're being notified, then the signal should not be ignored.
	if Ignored(syscall.SIGHUP) {
		t.Errorf("expected SIGHUP to not be ignored.")
	}

	if want, got := "signal.NotifyContext(context.Background.WithCancel, [hangup])", fmt.Sprint(c); want != got {
		t.Errorf("c.String() = %q, wanted %q", got, want)
	}

	stop()
	<-c.Done()
	if got := c.Err(); got != context.Canceled {

	{1133, "EDQUOT", "disk quota exceeded"},
}

// 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, "SIGEMT", "EMT trap"},

	{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"},

	{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"},