func NsecToTimeval(nsec int64) Timeval {
	nsec += 999 // round up to microsecond
	usec := nsec % 1e9 / 1e3
	sec := nsec / 1e9
	if usec < 0 {
		usec += 1e6
		sec--
	}
	return setTimeval(sec, usec)

//   - github.com/ulule/limiter/v3
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname time_now time.now
func time_now() (sec int64, nsec int32, mono int64) {
	sec, nsec = walltime()
	return sec, nsec, nanotime()

func (ts *Timespec) Unix() (sec int64, nsec int64) {
	return int64(ts.Sec), int64(ts.Nsec)
}

// Unix returns the time stored in tv as seconds plus nanoseconds.
func (tv *Timeval) Unix() (sec int64, nsec int64) {
	return int64(tv.Sec), int64(tv.Usec) * 1000
}

// Nano returns the time stored in ts as nanoseconds.
func (ts *Timespec) Nano() int64 {
	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
}

}

func (tv *Timeval) setTimestamp(t timestamp) {
	tv.Sec = int64(t / 1e9)
	tv.Usec = int64((t % 1e9) / 1e3)
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

type clockid = uint32

const (
	clockRealtime clockid = iota

	}

	return Chdir(path)
}

type Timespec struct {
	Sec  int32
	Nsec int32
}

type Timeval struct {
	Sec  int32
	Usec int32
}

func NsecToTimeval(nsec int64) (tv Timeval) {
	nsec += 999 // round up to microsecond
	tv.Usec = int32(nsec % 1e9 / 1e3)
	tv.Sec = int32(nsec / 1e9)
	return
}

func nsec() int64 {
	var scratch int64

}

type Iovec struct{} // dummy

type Timespec struct {
	Sec  int64
	Nsec int64
}

type Timeval struct {
	Sec  int64
	Usec int64
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}

	//   hdr[1:2] tid (uint16_t)
	//   hdr[3:11] log_time defined in <log/log_read.h>
	//      hdr[3:7] sec unsigned uint32, little endian.
	//      hdr[7:11] nsec unsigned uint32, little endian.
	hdr[0] = 0 // LOG_ID_MAIN
	sec, nsec, _ := time_now()
	packUint32(hdr[3:7], uint32(sec))
	packUint32(hdr[7:11], uint32(nsec))

	// TODO(hakim):  hdr[1:2] = gettid?

	return 11 + len(writeHeader)
}

}

// DateMicro returns the MicroTime corresponding to the supplied parameters
// by wrapping time.Date.
func DateMicro(year int, month time.Month, day, hour, min, sec, nsec int, loc *time.Location) MicroTime {
	return MicroTime{time.Date(year, month, day, hour, min, sec, nsec, loc)}
}

// NowMicro returns the current local time.
func NowMicro() MicroTime {
	return MicroTime{time.Now()}
}

}

func fallback_nanotime() int64
func fallback_walltime() (sec int64, nsec int32)

//go:nosplit
func nanotime1() int64 {
	bt := vdsoClockGettime(_CLOCK_MONOTONIC)
	if bt == zeroBintime {
		return fallback_nanotime()
	}
	return int64((1e9 * uint64(bt.sec)) + ((1e9 * uint64(bt.frac>>32)) >> 32))
}

func walltime() (sec int64, nsec int32) {
	bt := vdsoClockGettime(_CLOCK_REALTIME)
	if bt == zeroBintime {

	return Time{time}
}

// Date returns the Time corresponding to the supplied parameters
// by wrapping time.Date.
func Date(year int, month time.Month, day, hour, min, sec, nsec int, loc *time.Location) Time {
	return Time{time.Date(year, month, day, hour, min, sec, nsec, loc)}
}

// Now returns the current local time.
func Now() Time {
	return Time{time.Now()}
}

// IsZero returns true if the value is nil or time is zero.