| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.util; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| public class Atomics |
| { |
| private Atomics() |
| { |
| } |
| |
| public static boolean updateMin(AtomicLong currentMin, long newValue) |
| { |
| long oldValue = currentMin.get(); |
| while (newValue < oldValue) |
| { |
| if (currentMin.compareAndSet(oldValue, newValue)) |
| return true; |
| oldValue = currentMin.get(); |
| } |
| return false; |
| } |
| |
| public static boolean updateMax(AtomicLong currentMax, long newValue) |
| { |
| long oldValue = currentMax.get(); |
| while (newValue > oldValue) |
| { |
| if (currentMax.compareAndSet(oldValue, newValue)) |
| return true; |
| oldValue = currentMax.get(); |
| } |
| return false; |
| } |
| |
| public static boolean updateMin(AtomicInteger currentMin, int newValue) |
| { |
| int oldValue = currentMin.get(); |
| while (newValue < oldValue) |
| { |
| if (currentMin.compareAndSet(oldValue, newValue)) |
| return true; |
| oldValue = currentMin.get(); |
| } |
| return false; |
| } |
| |
| public static boolean updateMax(AtomicInteger currentMax, int newValue) |
| { |
| int oldValue = currentMax.get(); |
| while (newValue > oldValue) |
| { |
| if (currentMax.compareAndSet(oldValue, newValue)) |
| return true; |
| oldValue = currentMax.get(); |
| } |
| return false; |
| } |
| } |