com.generallycloud.baseio.concurrent.BufferedArrayListUnsafe Maven / Gradle / Ivy

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/*
 * Copyright 2015-2017 GenerallyCloud.com
 *  
 * 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.generallycloud.baseio.concurrent;

import java.util.ArrayList;
import java.util.List;

public class BufferedArrayListUnsafe {

	private List	list1	= new ArrayList();

	private List	list2	= new ArrayList();

	private List	buffer	= list1;

	public void offer(T t) {
		buffer.add(t);
	}

	public List getBuffer() {

		if (buffer == list1) {

			buffer = list2;

			buffer.clear();

			return list1;
		} else {

			buffer = list1;

			buffer.clear();

			return list2;
		}
	}

	public int getBufferSize() {
		return list1.size() + list2.size();
	}

}