| /* |
| * 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.geode.internal.concurrent; |
| |
| /** |
| * AL implementation for JDK 5. |
| */ |
| public class AtomicLong5 extends java.util.concurrent.atomic.AtomicLong implements AL { |
| private static final long serialVersionUID = -1915700199064062938L; |
| |
| public AtomicLong5() { |
| super(); |
| } |
| |
| public AtomicLong5(long initialValue) { |
| super(initialValue); |
| } |
| |
| /** |
| * Use it only when threads are doing incremental updates. If updates are random then this method |
| * may not be optimal. |
| */ |
| @Override |
| public boolean setIfGreater(long update) { |
| while (true) { |
| long cur = get(); |
| |
| if (update > cur) { |
| if (compareAndSet(cur, update)) |
| return true; |
| } else |
| return false; |
| } |
| } |
| } |