Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/ui/FindInHeapPanel.java @ 17716:cdb71841f4bc
6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
author | minqi |
---|---|
date | Wed, 26 Feb 2014 15:20:41 -0800 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 2008, 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.util.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.text.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.utilities.*; /** Finds a given (Address) value in the heap. Only intended for use in a debugging system. */ public class FindInHeapPanel extends JPanel { private RawHeapVisitor iterator; private long addressSize; private long usedSize; private long iterated; private Address value; private ProgressBarPanel progressBar; private HistoryComboBox addressField; private JButton findButton; private JTextArea textArea; private ArrayList updates; private double lastFrac; static final double minUpdateFraction = 0.05; public FindInHeapPanel() { super(); setLayout(new BorderLayout()); JPanel topPanel = new JPanel(); topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.Y_AXIS)); JPanel panel = new JPanel(); panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS)); panel.add(new JLabel("Address to search for:")); addressField = new HistoryComboBox(); panel.add(addressField); addressSize = VM.getVM().getAddressSize(); iterator = new RawHeapVisitor() { boolean error = false; public void prologue(long used) { usedSize = used; iterated = 0; lastFrac = 0; error = false; updates = new ArrayList(); } public void visitAddress(Address addr) { if (error) return; Address val = addr.getAddressAt(0); if (AddressOps.equal(val, value)) { error = reportResult(addr); } iterated += addressSize; updateProgressBar(); } public void visitCompOopAddress(Address addr) { if (error) return; Address val = addr.getCompOopAddressAt(0); if (AddressOps.equal(val, value)) { error = reportResult(addr); } iterated += addressSize; updateProgressBar(); } public void epilogue() { iterated = 0; updateProgressBar(); findButton.setEnabled(true); } }; findButton = new JButton("Find"); ActionListener listener = new ActionListener() { public void actionPerformed(ActionEvent e) { clearResultWindow(); // Parse text try { Address val = VM.getVM().getDebugger().parseAddress(addressField.getText()); value = val; findButton.setEnabled(false); java.lang.Thread t = new java.lang.Thread(new Runnable() { public void run() { try { VM.getVM().getObjectHeap().iterateRaw(iterator); } finally { SwingUtilities.invokeLater(new Runnable() { public void run() { findButton.setEnabled(true); } }); } } }); t.start(); } catch (Exception ex) { textArea.setText("Error parsing address"); } } }; panel.add(findButton); findButton.addActionListener(listener); addressField.addActionListener(listener); topPanel.add(panel); progressBar = new ProgressBarPanel(ProgressBarPanel.HORIZONTAL, "Search progress:"); topPanel.add(progressBar); add(topPanel, BorderLayout.NORTH); textArea = new JTextArea(); JScrollPane scroller = new JScrollPane(textArea); add(scroller, BorderLayout.CENTER); } private boolean pendingUpdate = false; private boolean reportResult(final Address addr) { synchronized (this) { try { updates.add("found at " + addr + "\n"); if (!pendingUpdate) { pendingUpdate = true; SwingUtilities.invokeLater(new Runnable() { public void run() { updateResultWindow(); } }); } } catch (Throwable t) { t.printStackTrace(); return true; } } return false; } private void clearResultWindow() { SwingUtilities.invokeLater(new Runnable() { public void run() { Document d = textArea.getDocument(); try { d.remove(0, d.getLength()); } catch (BadLocationException e) { } } }); } private synchronized void updateResultWindow() { if (updates.size() > 0) { Iterator i = updates.iterator(); while (i.hasNext()) { textArea.append((String)i.next()); } updates = new ArrayList();; } pendingUpdate = false; } private void invokeInDispatchThread(Runnable runnable) { if (EventQueue.isDispatchThread()) { runnable.run(); } else { SwingUtilities.invokeLater(runnable); } } private void updateProgressBar() { final double frac = (double) iterated / (double) usedSize; if (frac == 0.0 || (frac - lastFrac > minUpdateFraction)) { lastFrac = frac; if (iterated > usedSize) { System.out.println("iterated " + iterated + " usedSize " + usedSize); } SwingUtilities.invokeLater(new Runnable() { public void run() { progressBar.setValue(frac); } }); } } }