1 /* 2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * This source code is provided to illustrate the usage of a given feature 28 * or technique and has been deliberately simplified. Additional steps 29 * required for a production-quality application, such as security checks, 30 * input validation and proper error handling, might not be present in 31 * this sample code. 32 */ 33 34 35 package com.sun.tools.example.trace; 36 37 import java.io.*; 38 39 /** 40 * StreamRedirectThread is a thread which copies it's input to 41 * it's output and terminates when it completes. 42 * 43 * @author Robert Field 44 */ 45 class StreamRedirectThread extends Thread { 46 47 private final Reader in; 48 private final Writer out; 49 50 private static final int BUFFER_SIZE = 2048; 51 52 /** 53 * Set up for copy. 54 * @param name Name of the thread 55 * @param in Stream to copy from 56 * @param out Stream to copy to 57 */ 58 StreamRedirectThread(String name, InputStream in, OutputStream out) { 59 super(name); 60 this.in = new InputStreamReader(in); 61 this.out = new OutputStreamWriter(out); 62 setPriority(Thread.MAX_PRIORITY-1); 63 } 64 65 /** 66 * Copy. 67 */ 68 @Override 69 public void run() { 70 try { 71 char[] cbuf = new char[BUFFER_SIZE]; 72 int count; 73 while ((count = in.read(cbuf, 0, BUFFER_SIZE)) >= 0) { 74 out.write(cbuf, 0, count); 75 } 76 out.flush(); 77 } catch(IOException exc) { 78 System.err.println("Child I/O Transfer - " + exc); 79 } 80 } 81 }