1_5/modules/kernel/src/org/apache/axis2/util/Counter.java

/*
 * 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, 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 org.apache.axis2.util;


/**
 * This class provides a simple zero-based counter with synchronized access.
 */
public class Counter {

    private long value = 0L;

    public synchronized long incrementAndGet() {
        return ++value;
    }

    public synchronized long decrementAndGet() {
        if (value > 0L) {
            return --value;
        }
        else {
            return value;
        }
    }

    public synchronized void reset() {
        value = 0L;
    }

    public synchronized long get() {
        return value;
    }

}