/*
* Copyright (c) 2020, 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.
*/
/*
* @test
* @bug 4907798
* @key headful
* @summary Check for memory leak in menu subsystem
* @run main/othervm -Xmx8m PopupReferenceMemoryLeak
*/
import javax.swing.AbstractAction;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.WindowConstants;
import java.awt.BorderLayout;
import java.awt.Robot;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import static javax.swing.UIManager.getInstalledLookAndFeels;
public class PopupReferenceMemoryLeak {
static volatile WeakReference referenceToFrame1;
static JFrame frame1, frame2;
public static void main(String[] args) throws Exception {
Robot robot = new Robot();
robot.setAutoDelay(200);
for (UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) {
String lafName = laf.getName();
System.out.println("Testing LaF: " + lafName);
if (lafName == null || lafName.startsWith("Mac OS X")) {
// Aqua Look and Feel uses system menus we can't really test it
continue;
}
setLookAndFeel(laf);
PopupReferenceMemoryLeak newTest = new PopupReferenceMemoryLeak();
SwingUtilities.invokeAndWait(newTest::createUI);
try {
boolean passed = false;
robot.waitForIdle();
Thread.sleep(2000);
robot.mouseMove(200, 200);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
robot.keyPress(KeyEvent.VK_F10);
robot.keyRelease(KeyEvent.VK_F10);
robot.keyPress(KeyEvent.VK_F);
robot.keyRelease(KeyEvent.VK_F);
robot.keyPress(KeyEvent.VK_C);
robot.keyRelease(KeyEvent.VK_C);
robot.waitForIdle();
Thread.sleep(2000);
robot.mouseMove(600, 200);
robot.waitForIdle();
Thread.sleep(2000);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
// Workaround for Linux issues when sometimes there
// is a ref to last opened frame from native code
JFrame frame3 = new JFrame("Workaround");
frame3.setSize(100, 100);
frame3.setLocation(0,0);
frame3.setVisible(true);
Thread.sleep(1000);
frame3.setVisible(false);
frame3.dispose();
// Force GC three times to see if it clears the old frame
for (int i = 0; i < 3; i++) {
try {
ArrayList gc = new ArrayList();
while (true) {
gc.add(new int[100000]);
}
} catch (Throwable ignore) {
}
robot.waitForIdle();
Thread.sleep(1000);
if (referenceToFrame1.get() == null) {
// Frame was released
passed = true;
break;
}
}
if (!passed) {
robot.waitForIdle();
robot.keyPress(KeyEvent.VK_F10);
robot.keyRelease(KeyEvent.VK_F10);
robot.keyPress(KeyEvent.VK_T);
robot.keyRelease(KeyEvent.VK_T);
robot.keyPress(KeyEvent.VK_M);
robot.keyRelease(KeyEvent.VK_M);
robot.waitForIdle();
Thread.sleep(2000);
for (int i = 0; i < 5; i++) {
try {
ArrayList gc = new ArrayList();
while (true) {
gc.add(new int[100000]);
}
} catch (Throwable ignore) {
}
robot.waitForIdle();
Thread.sleep(1000);
if (referenceToFrame1.get() == null) {
// Frame was released
throw new RuntimeException("Frame cleared only after menu activated on frame2");
}
}
throw new RuntimeException("Test finished but menu has not cleared the reference!");
}
} catch (Exception re) {
throw new RuntimeException(re.getLocalizedMessage());
} finally {
if (frame2 != null) {
frame2.setVisible(false);
frame2.dispose();
}
}
}
}
private static void setLookAndFeel(UIManager.LookAndFeelInfo laf) {
try {
UIManager.setLookAndFeel(laf.getClassName());
} catch (UnsupportedLookAndFeelException ignored) {
System.out.println("Unsupported LookAndFeel: " + laf.getClassName());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void createUI() {
frame1 = new JFrame("Main test window");
JMenuBar menuBar1 = new JMenuBar();
JMenu file1 = new JMenu("File");
file1.setMnemonic('f');
JMenuItem close1 = new JMenuItem("Close");
close1.setMnemonic('c');
close1.addActionListener(new FrameCloser(frame1));
file1.add(close1);
menuBar1.add(file1);
frame1.setJMenuBar(menuBar1);
frame1.setSize(200, 200);
frame1.setLocation(100, 100);
frame1.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame1.setVisible(true);
referenceToFrame1 = new WeakReference(frame1);
frame1 = null;
frame2 = new JFrame("Secondary");
JMenuBar menuBar2 = new JMenuBar();
JMenu test = new JMenu("Test");
test.setMnemonic('T');
JMenuItem memoryTest = new JMenuItem("Memory");
memoryTest.setMnemonic('M');
test.add(memoryTest);
menuBar2.add(test);
frame2.setJMenuBar(menuBar2);
frame2.setLayout(new BorderLayout());
frame2.setSize(200, 200);
frame2.setLocation(500, 100);
frame2.setVisible(true);
}
class FrameCloser extends AbstractAction {
JFrame frame;
public FrameCloser(JFrame f) {
this.frame = f;
}
@Override
public void actionPerformed(ActionEvent e) {
if (frame != null) {
frame.setVisible(false);
frame.dispose();
this.frame = null;
}
}
}
}