001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.transport.udp;
018
019import java.nio.ByteBuffer;
020
021import org.apache.activemq.Service;
022
023/**
024 * Represents a pool of {@link ByteBuffer} instances. 
025 * This strategy could just create new buffers for each call or
026 * it could pool them.
027 * 
028 * 
029 */
030public interface ByteBufferPool extends Service {
031
032    /**
033     * Extract a buffer from the pool.
034     */
035    ByteBuffer borrowBuffer();
036
037    /**
038     * Returns the buffer to the pool or just discards it for a non-pool strategy
039     */
040    void returnBuffer(ByteBuffer buffer);
041
042    /**
043     * Sets the default size of the buffers
044     */
045    void setDefaultSize(int defaultSize);
046
047}