| /* |
| * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.ui; |
| |
| import java.awt.*; |
| import java.io.*; |
| import javax.swing.*; |
| import java.util.*; |
| |
| import sun.jvm.hotspot.memory.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.oops.*; |
| |
| /** Provides information about monitor cache. */ |
| |
| public class MonitorCacheDumpPanel extends JPanel { |
| public MonitorCacheDumpPanel() { |
| super(); |
| |
| setLayout(new BorderLayout()); |
| |
| // Simple at first |
| JScrollPane scroller = new JScrollPane(); |
| JTextArea textArea = new JTextArea(); |
| textArea = new JTextArea(); |
| textArea.setEditable(false); |
| textArea.setLineWrap(true); |
| textArea.setWrapStyleWord(true); |
| scroller.getViewport().add(textArea); |
| add(scroller, BorderLayout.CENTER); |
| |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| PrintStream tty = new PrintStream(bos); |
| tty.println("Monitor Cache Dump (not including JVMTI raw monitors):"); |
| tty.println(); |
| dumpOn(tty); |
| |
| textArea.setText(bos.toString()); |
| } |
| |
| private static void dumpMonitor(PrintStream tty, ObjectMonitor mon, boolean raw) { |
| tty.print("ObjectMonitor@" + mon.getAddress()); |
| if (raw) tty.print("(Raw Monitor)"); |
| tty.println(); |
| tty.println(" _header: 0x" + Long.toHexString(mon.header().value())); |
| OopHandle obj = mon.object(); |
| Oop oop = heap.newOop(obj); |
| tty.println(" _object: " + obj + ", a " + oop.getKlass().getName().asString()); |
| Address owner = mon.owner(); |
| tty.println(" _owner: " + owner); |
| if (!raw && owner != null) { |
| JavaThread thread = threads.owningThreadFromMonitor(mon); |
| if (thread != null) { |
| tty.println(" owning thread: " + thread.getThreadName()); |
| if (!thread.getAddress().equals(owner)) { |
| if (!thread.isLockOwned(owner)) { |
| tty.println(" WARNING! _owner doesn't fall in " + thread + |
| "'s stack space"); |
| } |
| } |
| } |
| } |
| tty.println(" _count: " + mon.count()); |
| tty.println(" _waiters: " + mon.waiters()); |
| tty.println(" _recursions: " + mon.recursions()); |
| } |
| |
| private void dumpOn(PrintStream tty) { |
| Iterator i = ObjectSynchronizer.objectMonitorIterator(); |
| if (i == null) { |
| tty.println("This version of HotSpot VM doesn't support monitor cache dump."); |
| tty.println("You need 1.4.0_04, 1.4.1_01 or later versions"); |
| return; |
| } |
| ObjectMonitor mon; |
| while (i.hasNext()) { |
| mon = (ObjectMonitor)i.next(); |
| if (mon.count() != 0 || mon.waiters() != 0 || mon.owner() != null) { |
| OopHandle object = mon.object(); |
| if (object == null) { |
| dumpMonitor(tty, mon, true); |
| } else { |
| dumpMonitor(tty, mon, false); |
| } |
| } |
| } |
| } |
| |
| private static Threads threads = VM.getVM().getThreads(); |
| private static ObjectHeap heap = VM.getVM().getObjectHeap(); |
| } |