return c.stopped
}

// Stop implements the graceful termination.
func (c *Cacher) Stop() {
	c.stopLock.Lock()
	if c.stopped {
		// avoid stopping twice (note: cachers are shared with subresources)
		c.stopLock.Unlock()
		return
	}
	c.stopped = true
	c.ready.stop()
	c.stopLock.Unlock()
	close(c.stopCh)
	c.stopWg.Wait()
}