/*
* Copyright (c) 2009, 2011, 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 %W% %E%
@bug 6798062
@summary Memory Leak on using getFiles of FileSystemView
@author Pavel Porvatov
@run applet/manual=done bug6798062.html
*/
import sun.awt.OSInfo;
import sun.awt.shell.ShellFolder;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.*;
import java.io.File;
import java.io.FileNotFoundException;
public class bug6798062 extends JApplet {
private final JSlider slider = new JSlider(0, 100);
private final JTextField tfLink = new JTextField();
private final JButton btnStart = new JButton("Start");
private final JButton btnStop = new JButton("Stop");
private final JButton btnGC = new JButton("Run System.gc()");
private ShellFolder folder;
private Thread thread;
public static void main(String[] args) {
JFrame frame = new JFrame("bug6798062");
frame.setSize(400, 300);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new bug6798062().initialize());
frame.setVisible(true);
}
public void init() {
add(initialize());
}
private JComponent initialize() {
if (OSInfo.getOSType() != OSInfo.OSType.WINDOWS) {
return new JLabel("The test is suitable only for Windows");
}
String tempDir = System.getProperty("java.io.tmpdir");
if (tempDir.length() == 0) { // 'java.io.tmpdir' isn't guaranteed to be defined
tempDir = System.getProperty("user.home");
}
System.out.println("Temp directory: " + tempDir);
try {
folder = ShellFolder.getShellFolder(new File(tempDir));
} catch (FileNotFoundException e) {
fail("Directory " + tempDir + " not found");
}
slider.setMajorTickSpacing(10);
slider.setPaintTicks(true);
slider.setPaintLabels(true);
slider.setSnapToTicks(true);
slider.setValue(10);
btnStart.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
setEnabledState(false);
thread = new MyThread(slider.getValue(), tfLink.getText());
thread.start();
}
});
btnStop.setEnabled(false);
btnStop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
thread.interrupt();
thread = null;
setEnabledState(true);
}
});
btnGC.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.gc();
}
});
setEnabledState(true);
JPanel pnButtons = new JPanel();
pnButtons.setLayout(new BoxLayout(pnButtons, BoxLayout.X_AXIS));
pnButtons.add(btnStart);
pnButtons.add(btnStop);
pnButtons.add(btnGC);
tfLink.setMaximumSize(new Dimension(300, 20));
JPanel pnContent = new JPanel();
pnContent.setLayout(new BoxLayout(pnContent, BoxLayout.Y_AXIS));
pnContent.add(new JLabel("Delay between listFiles() invocation (ms):"));
pnContent.add(slider);
pnContent.add(new JLabel("Provide link here:"));
pnContent.add(tfLink);
pnContent.add(pnButtons);
return pnContent;
}
private void setEnabledState(boolean enabled) {
slider.setEnabled(enabled);
btnStart.setEnabled(enabled);
btnStop.setEnabled(!enabled);
}
private static void fail(String msg) {
throw new RuntimeException(msg);
}
private class MyThread extends Thread {
private final int delay;
private final ShellFolder link;
private MyThread(int delay, String link) {
this.delay = delay;
ShellFolder linkFolder;
try {
linkFolder = ShellFolder.getShellFolder(new File(link));
} catch (FileNotFoundException e) {
e.printStackTrace();
linkFolder = null;
}
this.link = linkFolder;
}
public void run() {
while (!isInterrupted()) {
folder.listFiles();
if (link != null) {
try {
link.getLinkLocation();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
if (delay > 0) {
try {
Thread.sleep(delay);
} catch (InterruptedException e1) {
// The thread was interrupted
return;
}
}
}
}
}
}