/*
* Copyright 2011 LMAX Ltd.
*
* Licensed 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 com.lmax.disruptor.util;
import java.util.concurrent.atomic.AtomicLong;
/**
* Version of AtomicLong with cache line padding to prevent false sharing.
*/
public class PaddedAtomicLong extends AtomicLong
{
public volatile long p1, p2, p3, p4, p5, p6 = 7L;
/**
* Default constructor
*/
public PaddedAtomicLong()
{
}
/**
* Construct with an initial value.
*
* @param initialValue for initialisation
*/
public PaddedAtomicLong(final long initialValue)
{
super(initialValue);
}
public long sumPaddingToPreventOptimisation()
{
return p1 + p2 + p3 + p4 + p5 + p6;
}
}