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1 /*
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2 * Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.ui;
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26
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27 import java.awt.*;
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28 import java.io.*;
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29 import javax.swing.*;
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30 import sun.jvm.hotspot.runtime.*;
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31
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32 /** A JPanel to show information about Java-level deadlocks. */
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33
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34 public class DeadlockDetectionPanel extends JPanel {
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35 public DeadlockDetectionPanel() {
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36 super();
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37
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38 setLayout(new BorderLayout());
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39
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40 // Simple at first
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41 JScrollPane scroller = new JScrollPane();
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42 JTextArea textArea = new JTextArea();
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43 textArea = new JTextArea();
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44 textArea.setEditable(false);
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45 textArea.setLineWrap(true);
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46 textArea.setWrapStyleWord(true);
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47 scroller.getViewport().add(textArea);
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48 add(scroller, BorderLayout.CENTER);
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49
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50 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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51 PrintStream tty = new PrintStream(bos);
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52 printDeadlocks(tty);
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53 textArea.setText(bos.toString());
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54 }
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55
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56 private void printDeadlocks(PrintStream tty) {
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57 DeadlockDetector.print(tty);
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58 }
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59 }
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