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 * reserved comment block
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/*
 * Copyright 1999-2005 The Apache Software Foundation.
 *
 *  Licensed 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 com.sun.org.apache.xml.internal.security.utils;

import java.io.IOException;
import java.io.OutputStream;

A class that buffers writte without synchronize its methods
Author:raul
/** * A class that buffers writte without synchronize its methods * @author raul * */
public class UnsyncBufferedOutputStream extends OutputStream { final OutputStream out; final byte[] buf; static final int size=8*1024; private static ThreadLocal bufCahce = new ThreadLocal() { protected synchronized Object initialValue() { return new byte[size]; } }; int pointer=0;
Creates a buffered output stream without synchronization
Params:
  • out – the outputstream to buffer
/** * Creates a buffered output stream without synchronization * @param out the outputstream to buffer */
public UnsyncBufferedOutputStream(OutputStream out) { buf=(byte[])bufCahce.get(); this.out=out; }
@inheritDoc
/** @inheritDoc */
public void write(byte[] arg0) throws IOException { write(arg0,0,arg0.length); }
@inheritDoc
/** @inheritDoc */
public void write(byte[] arg0, int arg1, int len) throws IOException { int newLen=pointer+len; if (newLen> size) { flushBuffer(); if (len>size) { out.write(arg0,arg1,len); return; } newLen=len; } System.arraycopy(arg0,arg1,buf,pointer,len); pointer=newLen; } private final void flushBuffer() throws IOException { if (pointer>0) out.write(buf,0,pointer); pointer=0; }
@inheritDoc
/** @inheritDoc */
public void write(int arg0) throws IOException { if (pointer>= size) { flushBuffer(); } buf[pointer++]=(byte)arg0; }
@inheritDoc
/** @inheritDoc */
public void flush() throws IOException { flushBuffer(); out.flush(); }
@inheritDoc
/** @inheritDoc */
public void close() throws IOException { flush(); } }