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6798062: Memory Leak on using getFiles of FileSystemView

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Reviewed-by: peterz, malenkov
This commit is contained in:
Pavel Porvatov 2009-03-26 11:04:47 +03:00
parent 1a1db06a37
commit 93751b6e8c
3 changed files with 208 additions and 1 deletions
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9
jdk/src/windows/native/sun/windows/ShellFolder2.cpp
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@ -685,6 +685,9 @@ JNIEXPORT jlong JNICALL Java_sun_awt_shell_Win32ShellFolder2_getLinkLocation
psl->Release(); psl->Release();
} }
if (strret.uType == STRRET_WSTR) {
CoTaskMemFree(strret.pOleStr);
}
if (SUCCEEDED(hres)) { if (SUCCEEDED(hres)) {
return (jlong)pidl; return (jlong)pidl;
} else { } else {
@ -747,7 +750,11 @@ JNIEXPORT jstring JNICALL Java_sun_awt_shell_Win32ShellFolder2_getDisplayNameOf
if (pParent->GetDisplayNameOf(pidl, attrs, &strret) != S_OK) { if (pParent->GetDisplayNameOf(pidl, attrs, &strret) != S_OK) {
return NULL; return NULL;
} }
return jstringFromSTRRET(env, pidl, &strret); jstring result = jstringFromSTRRET(env, pidl, &strret);
if (strret.uType == STRRET_WSTR) {
CoTaskMemFree(strret.pOleStr);
}
return result;
} }
/* /*

11
jdk/test/javax/swing/JFileChooser/6798062/bug6798062.html Normal file
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@ -0,0 +1,11 @@
<html>
<body>
<applet code="bug6798062.class" width=400 height=300></applet>
1. Create a link
2. Copy path to the link into TextField
3. Run the Windows Task Manager. Select the Processes tab and find the java process
4. Press the Start button in the test window
5. Wait several minutes and observe in the Windows Task Manager
that Memory Usage of java process is not increasing
</body>
</html>

189
jdk/test/javax/swing/JFileChooser/6798062/bug6798062.java Normal file
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@ -0,0 +1,189 @@
/*
* Copyright 2009 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.
*/
/* @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.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 JPanel initialize() {
File file = new File("c:/");
try {
folder = ShellFolder.getShellFolder(file);
} catch (FileNotFoundException e) {
fail("Directory " + file.getPath() + " 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;
}
}
}
}
}
}