| // ======================================================================== |
| // Copyright (c) 2004-2009 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; |
| |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** Abstract Buffer pool. |
| * simple unbounded pool of buffers for header, request and response sizes. |
| * |
| */ |
| public class ThreadLocalBuffers extends AbstractBuffers |
| { |
| /* ------------------------------------------------------------ */ |
| private final ThreadLocal<ThreadBuffers> _buffers=new ThreadLocal<ThreadBuffers>() |
| { |
| @Override |
| protected ThreadBuffers initialValue() |
| { |
| return new ThreadBuffers(); |
| } |
| }; |
| |
| /* ------------------------------------------------------------ */ |
| public ThreadLocalBuffers(Buffers.Type headerType, int headerSize, Buffers.Type bufferType, int bufferSize, Buffers.Type otherType) |
| { |
| super(headerType,headerSize,bufferType,bufferSize,otherType); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getBuffer() |
| { |
| ThreadBuffers buffers = _buffers.get(); |
| if (buffers._buffer!=null) |
| { |
| Buffer b=buffers._buffer; |
| buffers._buffer=null; |
| return b; |
| } |
| |
| if (buffers._other!=null && isBuffer(buffers._other)) |
| { |
| Buffer b=buffers._other; |
| buffers._other=null; |
| return b; |
| } |
| |
| return newBuffer(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getHeader() |
| { |
| ThreadBuffers buffers = _buffers.get(); |
| if (buffers._header!=null) |
| { |
| Buffer b=buffers._header; |
| buffers._header=null; |
| return b; |
| } |
| |
| if (buffers._other!=null && isHeader(buffers._other)) |
| { |
| Buffer b=buffers._other; |
| buffers._other=null; |
| return b; |
| } |
| |
| return newHeader(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Buffer getBuffer(int size) |
| { |
| ThreadBuffers buffers = _buffers.get(); |
| if (buffers._other!=null && buffers._other.capacity()==size) |
| { |
| Buffer b=buffers._other; |
| buffers._other=null; |
| return b; |
| } |
| |
| return newBuffer(size); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void returnBuffer(Buffer buffer) |
| { |
| buffer.clear(); |
| if (buffer.isVolatile() || buffer.isImmutable()) |
| return; |
| |
| ThreadBuffers buffers = _buffers.get(); |
| |
| if (buffers._header==null && isHeader(buffer)) |
| buffers._header=buffer; |
| else if (buffers._buffer==null && isBuffer(buffer)) |
| buffers._buffer=buffer; |
| else |
| buffers._other=buffer; |
| } |
| |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public String toString() |
| { |
| return "{{"+getHeaderSize()+","+getBufferSize()+"}}"; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* ------------------------------------------------------------ */ |
| protected static class ThreadBuffers |
| { |
| Buffer _buffer; |
| Buffer _header; |
| Buffer _other; |
| } |
| } |