func (pool *ReaderPool) SetRate(rate int) int {
	pool.mu.Lock()
	old := pool.maxRate
	pool.maxRate = rate
	pool.setSharedRates()
	pool.mu.Unlock()
	return old
}
func (pool *ReaderPool) SetRate(rate int) int {
	pool.mu.Lock()
	old := pool.maxRate
	pool.maxRate = rate
	pool.setSharedRates()
	pool.mu.Unlock()
	return old
}
func ( pool * ReaderPool ) SetRate ( rate int ) int { pool . mu . Lock ( ) old := pool . maxRate pool . maxRate = rate pool . setSharedRates ( ) pool . mu . Unlock ( ) return old }
// SetRate of the pool, updating each given out reader to respect the
// newly set rate. Returns the old rate.
SetRate of the pool updating each given out reader to respect the newly set rate . Returns the old rate .