func (r *relayItems) Count() int {
	r.RLock()
	n := len(r.items) - int(r.tombs)
	r.RUnlock()
	return n
}
func (r *relayItems) Count() int {
	r.RLock()
	n := len(r.items) - int(r.tombs)
	r.RUnlock()
	return n
}
func ( r * relayItems ) Count ( ) int { r . RLock ( ) n := len ( r . items ) - int ( r . tombs ) r . RUnlock ( ) return n }
// Count returns the number of non-tombstone items in the relay.
Count returns the number of non - tombstone items in the relay .