org.eclipse.jetty.util.Atomics Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2013 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 void updateMin(AtomicLong currentMin, long newValue)
{
long oldValue = currentMin.get();
while (newValue < oldValue)
{
if (currentMin.compareAndSet(oldValue, newValue))
break;
oldValue = currentMin.get();
}
}
public static void updateMax(AtomicLong currentMax, long newValue)
{
long oldValue = currentMax.get();
while (newValue > oldValue)
{
if (currentMax.compareAndSet(oldValue, newValue))
break;
oldValue = currentMax.get();
}
}
public static void updateMin(AtomicInteger currentMin, int newValue)
{
int oldValue = currentMin.get();
while (newValue < oldValue)
{
if (currentMin.compareAndSet(oldValue, newValue))
break;
oldValue = currentMin.get();
}
}
public static void updateMax(AtomicInteger currentMax, int newValue)
{
int oldValue = currentMax.get();
while (newValue > oldValue)
{
if (currentMax.compareAndSet(oldValue, newValue))
break;
oldValue = currentMax.get();
}
}
}