1 /* 2 * Copyright (c) 2002, 2004, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.ui; 26 27 import java.awt.*; 28 import java.io.*; 29 import javax.swing.*; 30 import sun.jvm.hotspot.runtime.*; 31 32 /** A JPanel to show information about Java-level deadlocks. */ 33 34 public class DeadlockDetectionPanel extends JPanel { DeadlockDetectionPanel()35 public DeadlockDetectionPanel() { 36 super(); 37 38 setLayout(new BorderLayout()); 39 40 // Simple at first 41 JScrollPane scroller = new JScrollPane(); 42 JTextArea textArea = new JTextArea(); 43 textArea = new JTextArea(); 44 textArea.setEditable(false); 45 textArea.setLineWrap(true); 46 textArea.setWrapStyleWord(true); 47 scroller.getViewport().add(textArea); 48 add(scroller, BorderLayout.CENTER); 49 50 ByteArrayOutputStream bos = new ByteArrayOutputStream(); 51 PrintStream tty = new PrintStream(bos); 52 printDeadlocks(tty); 53 textArea.setText(bos.toString()); 54 } 55 printDeadlocks(PrintStream tty)56 private void printDeadlocks(PrintStream tty) { 57 DeadlockDetector.print(tty); 58 } 59 } 60