//
   //  ========================================================================
   //  Copyright (c) 1995-2016 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;
      }
  }