bytebufferpool.java

一个实用工具类

/*
 * Copyright (C) butor.com. All rights reserved.
 *
 * This software is published under the terms of the GNU Library General
 * Public License (GNU LGPL), a copy of which has been included with this
 * distribution in the LICENSE.txt file. 
 */

package org.butor.socket.nio;

import java.nio.ByteBuffer;
import java.util.Stack;

/*
 *TODO
 *
 * @author sawanai
 * @date Feb 14, 2006
 */
public class ByteBufferPool {

	// pool of StringBuffer
	protected static Stack stack = new Stack();
	
	protected static ByteBuffer getStringBuffer() {
		synchronized (stack) {
			if (stack.size() > 0) {
				ByteBuffer bb = (ByteBuffer) stack.pop();
				return bb;
			}
		}
		return ByteBuffer.allocate(512);
	}
	protected static void keepByteBuffer(ByteBuffer bb) {
		synchronized (stack) {
			if (stack.size() < 1000) { //keep 1000 maximum
				bb.clear();
				stack.push(bb);
			}
		}
	}

}