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/*
* Copyright (c) 2009, 2017, 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
* @key headful
* @bug 6713352
* @summary Deadlock in JFileChooser with synchronized custom FileSystemView
* @author Pavel Porvatov
* @modules java.desktop/sun.awt.shell
* @run main bug6713352
*/
import sun.awt.shell.ShellFolder;
import javax.swing.*;
import javax.swing.filechooser.FileSystemView;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
public class bug6713352 {
public static void main(String[] args) throws Exception {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
String tempDir = System.getProperty("java.io.tmpdir");
if (tempDir == null || !new File(tempDir).isDirectory()) {
tempDir = System.getProperty("user.home");
}
MyFileSystemView systemView = new MyFileSystemView();
synchronized (systemView) { // Get SystemView lock
new JFileChooser(systemView);
// Wait a little bit. BasicDirectoryModel will lock Invoker and stop on
// the bug6713352.MyFileSystemView.getFiles() method
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
try {
System.out.println("Try to get Invokers lock");
ShellFolder.getShellFolder(new File(tempDir)).listFiles(true);
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
}
}
// To avoid RejectedExecutionException in BasicDirectoryModel wait a second
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
});
}
private static class MyFileSystemView extends FileSystemView {
public File createNewFolder(File containingDir) throws IOException {
return null;
}
public File[] getFiles(File dir, boolean useFileHiding) {
System.out.println("getFiles start");
File[] result;
synchronized (this) {
result = super.getFiles(dir, useFileHiding);
}
System.out.println("getFiles finished");
return result;
}
public synchronized Boolean isTraversable(File f) {
return super.isTraversable(f);
}
}
}
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