func (*StdClock) NowNanoseconds() int64 {
	sec, nsec, _ := now()
	return sec*1e9 + int64(nsec)
}
NowNanoseconds implements Clock.NowNanoseconds.
package tcpip
import (
	_ "time"    
	_ "unsafe"  
)
type StdClock struct{}
var _ Clock = (*StdClock)(nil)
func now() (sec int64, nsec int32, mono int64)