StreamRedirectThread.java

/**************************************************************************************
 * Copyright (c) Jonas Bon�r, Alexandre Vasseur. All rights reserved.                 *
 * http://aspectwerkz.codehaus.org                                                    *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the LGPL license      *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package org.codehaus.aspectwerkz.hook;

import java.io.InputStream;
import java.io.OutputStream;

/**
 * Redirects stream using an internal buffer of size 2048 Used to redirect std(in/out/err) streams of the target VM
 * <p/>Inspired from Ant StreamPumper class, which seems better than the JPDA Sun demo
 *
 * @author <a href="mailto:alex@gnilux.com">Alexandre Vasseur </a>
 */
class StreamRedirectThread extends Thread {
    private static final int BUFFER_SIZE = 2048;

    private static final int SLEEP = 5;

    private InputStream is;

    private OutputStream os;

    public StreamRedirectThread(String name, InputStream is, OutputStream os) {
        super(name);
        setPriority(Thread.MAX_PRIORITY - 1);
        this.is = is;
        this.os = os;
    }

    public void run() {
        byte[] buf = new byte[BUFFER_SIZE];
        int i;
        try {
            while ((i = is.read(buf)) > 0) {
                os.write(buf, 0, i);
                try {
                    Thread.sleep(SLEEP);
                } catch (InterruptedException e) {
                    ;
                }
            }
        } catch (Exception e) {
            ;
        } finally {
            ; //notify();
        }
    }

    /*
     * public StreamRedirectThread(String name, InputStream in, OutputStream out) { super(name); this.in = new
     * InputStreamReader(in); this.out = new OutputStreamWriter(out); setPriority(Thread.MAX_PRIORITY-1); } public void
     * run() { try { char[] cbuf = new char[BUFFER_SIZE]; int count; System.out.println("read" + this.getName()); while
     * ((count = in.read(cbuf, 0, BUFFER_SIZE)) >= 0) { System.out.println("write" + this.getName()); out.write(cbuf, 0,
     * count); out.flush(); } out.flush(); } catch (IOException e) { System.err.println("Child I/O Transfer failed - " +
     * e); } finally { try { out.close(); in.close(); } catch(IOException e) { ; } } }
     */
}