| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.io; |
| |
| /* ------------------------------------------------------------ */ |
| /** SimpleBuffers. |
| * Simple implementation of Buffers holder. |
| * |
| * |
| */ |
| public class SimpleBuffers implements Buffers |
| { |
| final Buffer _header; |
| final Buffer _buffer; |
| boolean _headerOut; |
| boolean _bufferOut; |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * |
| */ |
| public SimpleBuffers(Buffer header, Buffer buffer) |
| { |
| _header=header; |
| _buffer=buffer; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getBuffer() |
| { |
| synchronized(this) |
| { |
| if (_buffer!=null && !_bufferOut) |
| { |
| _bufferOut=true; |
| return _buffer; |
| } |
| |
| if (_buffer!=null && _header!=null && _header.capacity()==_buffer.capacity() && !_headerOut) |
| { |
| _headerOut=true; |
| return _header; |
| } |
| |
| if (_buffer!=null) |
| return new ByteArrayBuffer(_buffer.capacity()); |
| return new ByteArrayBuffer(4096); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getHeader() |
| { |
| synchronized(this) |
| { |
| if (_header!=null && !_headerOut) |
| { |
| _headerOut=true; |
| return _header; |
| } |
| |
| if (_buffer!=null && _header!=null && _header.capacity()==_buffer.capacity() && !_bufferOut) |
| { |
| _bufferOut=true; |
| return _buffer; |
| } |
| |
| if (_header!=null) |
| return new ByteArrayBuffer(_header.capacity()); |
| return new ByteArrayBuffer(4096); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getBuffer(int size) |
| { |
| synchronized(this) |
| { |
| if (_header!=null && _header.capacity()==size) |
| return getHeader(); |
| if (_buffer!=null && _buffer.capacity()==size) |
| return getBuffer(); |
| return null; |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void returnBuffer(Buffer buffer) |
| { |
| synchronized(this) |
| { |
| buffer.clear(); |
| if (buffer==_header) |
| _headerOut=false; |
| if (buffer==_buffer) |
| _bufferOut=false; |
| } |
| } |
| |
| |
| } |