func (rtr *Rotor) NOpened() int {
	rtr.Lock()
	defer rtr.Unlock()
	return len(rtr.open)
}
// NOpened returns the number of XIDs in the rotor.
NOpened returns the number of XIDs in the rotor.
// NOpened returns the number of XIDs in the rotor .
func (rtr *Rotor) NOpened() int {
	rtr.Lock()
	defer rtr.Unlock()
	return len(rtr.open)
}
func ( rtr * Rotor ) NOpened ( ) int { rtr . Lock ( ) defer rtr . Unlock ( ) return len ( rtr . open ) }
NOpened returns the number of XIDs in the rotor.
NOpened returns the number of XIDs in the rotor .