| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.loadtests.util; |
| |
| /** |
| * Counts the cumulative average as new data arrives. |
| */ |
| public class GridCumulativeAverage { |
| /** Iteration number. */ |
| private int i; |
| |
| /** Current value. */ |
| private long cur; |
| |
| /** |
| * Updates the current average and the counter, taking into account |
| * the next coming value. |
| * |
| * @param nextVal The next value to recalculate the average with. |
| */ |
| public void update(long nextVal) { |
| cur = (nextVal + i * cur) / (i + 1); |
| |
| i++; |
| } |
| |
| /** |
| * @return The current average value. |
| */ |
| public long get() { |
| return cur; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return Long.toString(cur); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| return Long.valueOf(cur).hashCode(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object obj) { |
| return Long.valueOf(cur).equals(obj); |
| } |
| } |