﻿/*
 * 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.
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Apache.NMS.Util;

namespace Apache.NMS.AMQP.Util
{
    /// <summary>
    /// Simple utility class used mainly for Id generation.
    /// </summary>
    public class AtomicSequence : Atomic<ulong>
    {
        public AtomicSequence() : base()
        {
        }

        public AtomicSequence(ulong defaultValue) : base(defaultValue)
        {
        }

        public ulong getAndIncrement()
        {
            ulong val = 0;
            lock (this)
            {
                val = atomicValue;
                atomicValue++;
            }
            return val;
        }

        public override string ToString()
        {
            return Value.ToString();
        }
    }
}