Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/ui/CommandProcessorPanel.java @ 11997:cd25d3be91c5
8012144: multiple SIGSEGVs fails on staxf
Summary: Forward port of 7u change to add additional fence() on RMO platforms, with a load_acquire on all platforms
Reviewed-by: dholmes, kvn
author | vladidan |
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date | Tue, 06 Aug 2013 20:01:40 -0400 |
parents | f6f3bb0ee072 |
children |
rev | line source |
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0 | 1 /* |
3939 | 2 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.ui; | |
26 | |
27 import java.io.*; | |
28 import java.awt.*; | |
29 import java.awt.event.*; | |
30 import javax.swing.*; | |
31 import javax.swing.event.*; | |
32 import javax.swing.text.*; | |
33 | |
34 import sun.jvm.hotspot.CommandProcessor; | |
35 import sun.jvm.hotspot.debugger.*; | |
36 import sun.jvm.hotspot.utilities.*; | |
37 | |
38 /** A JPanel subclass containing a scrollable text area displaying the | |
39 debugger's console, if it has one. This should not be created for | |
40 a debugger which does not have a console. */ | |
41 | |
42 public class CommandProcessorPanel extends JPanel { | |
43 private CommandProcessor commands; | |
44 private JTextArea editor; | |
45 private boolean updating; | |
46 private int mark; | |
47 private String curText; // handles multi-line input via '\' | |
48 | |
49 // Don't run the "main" method of this class unless this flag is set to true first | |
50 private static final boolean DEBUGGING = false; | |
51 | |
52 ByteArrayOutputStream baos = new ByteArrayOutputStream(10240); | |
53 | |
54 | |
55 public CommandProcessorPanel(CommandProcessor cp) { | |
56 | |
57 commands = cp; | |
58 | |
59 setLayout(new BorderLayout()); | |
60 | |
61 editor = new JTextArea(); | |
62 editor.setDocument(new EditableAtEndDocument()); | |
63 editor.setFont(GraphicsUtilities.lookupFont("Courier")); | |
64 JScrollPane scroller = new JScrollPane(); | |
65 scroller.getViewport().add(editor); | |
66 add(scroller, BorderLayout.CENTER); | |
67 | |
68 // Set up out | |
69 PrintStream o = new PrintStream(baos, true); | |
70 cp.setOutput(o); | |
71 cp.setErr(o); | |
72 | |
73 editor.getDocument().addDocumentListener(new DocumentListener() { | |
74 public void changedUpdate(DocumentEvent e) { | |
75 } | |
76 | |
77 public void insertUpdate(DocumentEvent e) { | |
78 if (updating) return; | |
79 beginUpdate(); | |
80 editor.setCaretPosition(editor.getDocument().getLength()); | |
81 if (insertContains(e, '\n')) { | |
82 String cmd = getMarkedText(); | |
83 // Handle multi-line input | |
84 if ((cmd.length() == 0) || (cmd.charAt(cmd.length() - 1) != '\\')) { | |
85 // Trim "\\n" combinations | |
86 final String ln = trimContinuations(cmd); | |
87 SwingUtilities.invokeLater(new Runnable() { | |
88 public void run() { | |
89 beginUpdate(); | |
90 try { | |
3939 | 91 commands.executeCommand(ln, true); |
0 | 92 commands.printPrompt(); |
93 Document d = editor.getDocument(); | |
94 try { | |
95 d.insertString(d.getLength(), baos.toString(), null); | |
96 } | |
97 catch (BadLocationException ble) { | |
98 ble.printStackTrace(); | |
99 } | |
100 baos.reset(); | |
101 editor.setCaretPosition(editor.getDocument().getLength()); | |
102 setMark(); | |
103 } finally { | |
104 endUpdate(); | |
105 } | |
106 } | |
107 }); | |
108 } | |
109 } else { | |
110 endUpdate(); | |
111 } | |
112 } | |
113 | |
114 public void removeUpdate(DocumentEvent e) { | |
115 } | |
116 }); | |
117 | |
118 // This is a bit of a hack but is probably better than relying on | |
119 // the JEditorPane to update the caret's position precisely the | |
120 // size of the insertion | |
121 editor.addCaretListener(new CaretListener() { | |
122 public void caretUpdate(CaretEvent e) { | |
123 int len = editor.getDocument().getLength(); | |
124 if (e.getDot() > len) { | |
125 editor.setCaretPosition(len); | |
126 } | |
127 } | |
128 }); | |
129 | |
130 Box hbox = Box.createHorizontalBox(); | |
131 hbox.add(Box.createGlue()); | |
132 JButton button = new JButton("Clear Saved Text"); | |
133 button.addActionListener(new ActionListener() { | |
134 public void actionPerformed(ActionEvent e) { | |
135 clear(); | |
136 } | |
137 }); | |
138 hbox.add(button); | |
139 hbox.add(Box.createGlue()); | |
140 add(hbox, BorderLayout.SOUTH); | |
141 | |
142 clear(); | |
143 } | |
144 | |
145 public void requestFocus() { | |
146 editor.requestFocus(); | |
147 } | |
148 | |
149 public void clear() { | |
150 EditableAtEndDocument d = (EditableAtEndDocument) editor.getDocument(); | |
151 d.clear(); | |
3939 | 152 commands.executeCommand("", false); |
0 | 153 setMark(); |
154 editor.requestFocus(); | |
155 } | |
156 | |
157 public void setMark() { | |
158 ((EditableAtEndDocument) editor.getDocument()).setMark(); | |
159 } | |
160 | |
161 public String getMarkedText() { | |
162 try { | |
163 String s = ((EditableAtEndDocument) editor.getDocument()).getMarkedText(); | |
164 int i = s.length(); | |
165 while ((i > 0) && (s.charAt(i - 1) == '\n')) { | |
166 i--; | |
167 } | |
168 return s.substring(0, i); | |
169 } | |
170 catch (BadLocationException e) { | |
171 e.printStackTrace(); | |
172 return null; | |
173 } | |
174 } | |
175 | |
176 //-------------------------------------------------------------------------------- | |
177 // Internals only below this point | |
178 // | |
179 | |
180 private void beginUpdate() { | |
181 updating = true; | |
182 } | |
183 | |
184 private void endUpdate() { | |
185 updating = false; | |
186 } | |
187 | |
188 private boolean insertContains(DocumentEvent e, char c) { | |
189 String s = null; | |
190 try { | |
191 s = editor.getText(e.getOffset(), e.getLength()); | |
192 for (int i = 0; i < e.getLength(); i++) { | |
193 if (s.charAt(i) == c) { | |
194 return true; | |
195 } | |
196 } | |
197 } | |
198 catch (BadLocationException ex) { | |
199 ex.printStackTrace(); | |
200 } | |
201 return false; | |
202 } | |
203 | |
204 private String trimContinuations(String text) { | |
205 int i; | |
206 while ((i = text.indexOf("\\\n")) >= 0) { | |
207 text = text.substring(0, i) + text.substring(i+2, text.length()); | |
208 } | |
209 return text; | |
210 } | |
211 | |
212 public static void main(String[] args) { | |
213 JFrame frame = new JFrame(); | |
214 frame.getContentPane().setLayout(new BorderLayout()); | |
215 CommandProcessorPanel panel = new CommandProcessorPanel(null); | |
216 frame.getContentPane().add(panel, BorderLayout.CENTER); | |
217 frame.addWindowListener(new WindowAdapter() { | |
218 public void windowClosing(WindowEvent e) { | |
219 System.exit(0); | |
220 } | |
221 }); | |
222 frame.setSize(500, 500); | |
152
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223 frame.setVisible(true); |
0 | 224 panel.requestFocus(); |
225 } | |
226 } |