Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/ui/MonitorCacheDumpPanel.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2002-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.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(); }