| /** |
| * 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.activemq.transport.udp; |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * A default implementation of {@link BufferPool} which keeps a pool of direct |
| * byte buffers. |
| * |
| * |
| */ |
| public class DefaultBufferPool extends SimpleBufferPool implements ByteBufferPool { |
| |
| private List<ByteBuffer> buffers = new ArrayList<ByteBuffer>(); |
| private Object lock = new Object(); |
| |
| public DefaultBufferPool() { |
| super(true); |
| } |
| |
| public DefaultBufferPool(boolean useDirect) { |
| super(useDirect); |
| } |
| |
| public synchronized ByteBuffer borrowBuffer() { |
| synchronized (lock) { |
| int size = buffers.size(); |
| if (size > 0) { |
| return buffers.remove(size - 1); |
| } |
| } |
| return createBuffer(); |
| } |
| |
| public void returnBuffer(ByteBuffer buffer) { |
| synchronized (lock) { |
| buffers.add(buffer); |
| } |
| } |
| |
| public void start() throws Exception { |
| } |
| |
| public void stop() throws Exception { |
| synchronized (lock) { |
| /* |
| * for (Iterator iter = buffers.iterator(); iter.hasNext();) { |
| * ByteBuffer buffer = (ByteBuffer) iter.next(); } |
| */ |
| buffers.clear(); |
| } |
| } |
| |
| } |