org.apache.rocketmq.broker.util.PositiveAtomicCounter Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.rocketmq.broker.util;
import java.util.concurrent.atomic.AtomicInteger;
public class PositiveAtomicCounter {
private static final int MASK = 0x7FFFFFFF;
private final AtomicInteger atom;
public PositiveAtomicCounter() {
atom = new AtomicInteger(0);
}
public final int incrementAndGet() {
final int rt = atom.incrementAndGet();
return rt & MASK;
}
public int intValue() {
return atom.intValue();
}
}