Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/ui/MonitorCacheDumpPanel.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2002-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any 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 java.util.*; | |
31 | |
32 import sun.jvm.hotspot.memory.*; | |
33 import sun.jvm.hotspot.runtime.*; | |
34 import sun.jvm.hotspot.debugger.*; | |
35 import sun.jvm.hotspot.oops.*; | |
36 | |
37 /** Provides information about monitor cache. */ | |
38 | |
39 public class MonitorCacheDumpPanel extends JPanel { | |
40 public MonitorCacheDumpPanel() { | |
41 super(); | |
42 | |
43 setLayout(new BorderLayout()); | |
44 | |
45 // Simple at first | |
46 JScrollPane scroller = new JScrollPane(); | |
47 JTextArea textArea = new JTextArea(); | |
48 textArea = new JTextArea(); | |
49 textArea.setEditable(false); | |
50 textArea.setLineWrap(true); | |
51 textArea.setWrapStyleWord(true); | |
52 scroller.getViewport().add(textArea); | |
53 add(scroller, BorderLayout.CENTER); | |
54 | |
55 ByteArrayOutputStream bos = new ByteArrayOutputStream(); | |
56 PrintStream tty = new PrintStream(bos); | |
57 tty.println("Monitor Cache Dump (not including JVMTI raw monitors):"); | |
58 tty.println(); | |
59 dumpOn(tty); | |
60 | |
61 textArea.setText(bos.toString()); | |
62 } | |
63 | |
64 private static void dumpMonitor(PrintStream tty, ObjectMonitor mon, boolean raw) { | |
65 tty.print("ObjectMonitor@" + mon.getAddress()); | |
66 if (raw) tty.print("(Raw Monitor)"); | |
67 tty.println(); | |
68 tty.println(" _header: 0x" + Long.toHexString(mon.header().value())); | |
69 OopHandle obj = mon.object(); | |
70 Oop oop = heap.newOop(obj); | |
71 tty.println(" _object: " + obj + ", a " + oop.getKlass().getName().asString()); | |
72 Address owner = mon.owner(); | |
73 tty.println(" _owner: " + owner); | |
74 if (!raw && owner != null) { | |
75 JavaThread thread = threads.owningThreadFromMonitor(mon); | |
76 if (thread != null) { | |
77 tty.println(" owning thread: " + thread.getThreadName()); | |
78 if (!thread.getAddress().equals(owner)) { | |
79 if (!thread.isLockOwned(owner)) { | |
80 tty.println(" WARNING! _owner doesn't fall in " + thread + | |
81 "'s stack space"); | |
82 } | |
83 } | |
84 } | |
85 } | |
86 tty.println(" _count: " + mon.count()); | |
87 tty.println(" _waiters: " + mon.waiters()); | |
88 tty.println(" _recursions: " + mon.recursions()); | |
89 } | |
90 | |
91 private void dumpOn(PrintStream tty) { | |
92 Iterator i = ObjectSynchronizer.objectMonitorIterator(); | |
93 if (i == null) { | |
94 tty.println("This version of HotSpot VM doesn't support monitor cache dump."); | |
95 tty.println("You need 1.4.0_04, 1.4.1_01 or later versions"); | |
96 return; | |
97 } | |
98 ObjectMonitor mon; | |
99 while (i.hasNext()) { | |
100 mon = (ObjectMonitor)i.next(); | |
101 if (mon.count() != 0 || mon.waiters() != 0 || mon.owner() != null) { | |
102 OopHandle object = mon.object(); | |
103 if (object == null) { | |
104 dumpMonitor(tty, mon, true); | |
105 } else { | |
106 dumpMonitor(tty, mon, false); | |
107 } | |
108 } | |
109 } | |
110 } | |
111 | |
112 private static Threads threads = VM.getVM().getThreads(); | |
113 private static ObjectHeap heap = VM.getVM().getObjectHeap(); | |
114 } |