6460525: javax/swing/JFileChooser/6396844/TwentyThousandTest.java times out

Reviewed-by: malenkov, peterz

src/share/classes/javax/swing/JFileChooser.java

 /*
- * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2009 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
@@ -739,6 +739,11 @@ public class JFileChooser extends JComponent implements Accessible {
 
         dialog.show();
         firePropertyChange("JFileChooserDialogIsClosingProperty", dialog, null);
+
+        // Remove all components from dialog. The MetalFileChooserUI.installUI() method (and other LAFs)
+        // registers AWT listener for dialogs and produces memory leaks. It happens when
+        // installUI invoked after the showDialog method.
+        dialog.getContentPane().removeAll();
         dialog.dispose();
         dialog = null;
         return returnValue;

src/share/classes/javax/swing/plaf/basic/BasicDirectoryModel.java

 /*
- * Copyright 1998-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1998-2009 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
@@ -232,6 +232,10 @@ public class BasicDirectoryModel extends AbstractListModel implements PropertyCh
         public void run0() {
             FileSystemView fileSystem = filechooser.getFileSystemView();
 
+            if (isInterrupted()) {
+                return;
+            }
+
             File[] list = fileSystem.getFiles(currentDirectory, filechooser.isFileHidingEnabled());
 
             if (isInterrupted()) {
@@ -268,8 +272,8 @@ public class BasicDirectoryModel extends AbstractListModel implements PropertyCh
 
             // To avoid loads of synchronizations with Invoker and improve performance we
             // execute the whole block on the COM thread
-            DoChangeContents doChangeContents = ShellFolder.getInvoker().invoke(new Callable<DoChangeContents>() {
-                public DoChangeContents call() throws Exception {
+            DoChangeContents doChangeContents = ShellFolder.invoke(new Callable<DoChangeContents>() {
+                public DoChangeContents call() {
                     int newSize = newFileCache.size();
                     int oldSize = fileCache.size();
 

src/share/classes/sun/awt/shell/ShellFolder.java

 /*
- * Copyright 2000-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2000-2009 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
@@ -289,8 +289,8 @@ public abstract class ShellFolder extends File {
 
         // To avoid loads of synchronizations with Invoker and improve performance we
         // synchronize the whole code of the sort method once
-        getInvoker().invoke(new Callable<Void>() {
-            public Void call() throws Exception {
+        invoke(new Callable<Void>() {
+            public Void call() {
                 // Check that we can use the ShellFolder.sortChildren() method:
                 //   1. All files have the same non-null parent
                 //   2. All files is ShellFolders
@@ -330,8 +330,8 @@ public abstract class ShellFolder extends File {
     public void sortChildren(final List<? extends File> files) {
         // To avoid loads of synchronizations with Invoker and improve performance we
         // synchronize the whole code of the sort method once
-        getInvoker().invoke(new Callable<Void>() {
-            public Void call() throws Exception {
+        invoke(new Callable<Void>() {
+            public Void call() {
                 Collections.sort(files, FILE_COMPARATOR);
 
                 return null;
@@ -501,18 +501,62 @@ public abstract class ShellFolder extends File {
         return invoker;
     }
 
+    /**
+     * Invokes the {@code task} which doesn't throw checked exceptions
+     * from its {@code call} method. If invokation is interrupted then Thread.currentThread().isInterrupted() will
+     * be set and result will be {@code null}
+     */
+    public static <T> T invoke(Callable<T> task) {
+        try {
+            return invoke(task, RuntimeException.class);
+        } catch (InterruptedException e) {
+            return null;
+        }
+    }
+
+    /**
+     * Invokes the {@code task} which throws checked exceptions from its {@code call} method.
+     * If invokation is interrupted then Thread.currentThread().isInterrupted() will
+     * be set and InterruptedException will be thrown as well.
+     */
+    public static <T, E extends Throwable> T invoke(Callable<T> task, Class<E> exceptionClass)
+            throws InterruptedException, E {
+        try {
+            return getInvoker().invoke(task);
+        } catch (Exception e) {
+            if (e instanceof RuntimeException) {
+                // Rethrow unchecked exceptions
+                throw (RuntimeException) e;
+            }
+
+            if (e instanceof InterruptedException) {
+                // Set isInterrupted flag for current thread
+                Thread.currentThread().interrupt();
+
+                // Rethrow InterruptedException
+                throw (InterruptedException) e;
+            }
+
+            if (exceptionClass.isInstance(e)) {
+                throw exceptionClass.cast(e);
+            }
+
+            throw new RuntimeException("Unexpected error", e);
+        }
+    }
+
     /**
      * Interface allowing to invoke tasks in different environments on different platforms.
      */
     public static interface Invoker {
         /**
-         * Invokes a callable task. If the {@code task} throws a checked exception,
-         * it will be wrapped into a {@link RuntimeException}
+         * Invokes a callable task.
          *
          * @param task a task to invoke
+         * @throws Exception {@code InterruptedException} or an exception that was thrown from the {@code task}
          * @return the result of {@code task}'s invokation
          */
-        <T> T invoke(Callable<T> task);
+        <T> T invoke(Callable<T> task) throws Exception;
     }
 
     /**

src/share/classes/sun/awt/shell/ShellFolderManager.java

 /*
- * Copyright 2000-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2000-2009 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
@@ -108,12 +108,8 @@ class ShellFolderManager {
     }
 
     private static class DirectInvoker implements ShellFolder.Invoker {
-        public <T> T invoke(Callable<T> task) {
-            try {
+        public <T> T invoke(Callable<T> task) throws Exception {
             return task.call();
-            } catch (Exception e) {
-                throw new RuntimeException(e);
-            }
         }
     }
 }

src/share/classes/sun/swing/FilePane.java

-
 /*
- * Copyright 2003-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2003-2009 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
@@ -905,8 +904,8 @@ public class FilePane extends JPanel implements PropertyChangeListener {
 
         @Override
         public void sort() {
-            ShellFolder.getInvoker().invoke(new Callable<Void>() {
-                public Void call() throws Exception {
+            ShellFolder.invoke(new Callable<Void>() {
+                public Void call() {
                     DetailsTableRowSorter.super.sort();
                     return null;
                 }

src/windows/classes/sun/awt/shell/Win32ShellFolder2.java

 /*
- * Copyright 2003-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2003-2009 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
@@ -29,7 +29,6 @@ import java.awt.Image;
 import java.awt.Toolkit;
 import java.awt.image.BufferedImage;
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.*;
 import java.util.concurrent.*;
@@ -185,8 +184,8 @@ final class Win32ShellFolder2 extends ShellFolder {
         boolean disposed;
         public void dispose() {
             if (disposed) return;
-            ShellFolder.getInvoker().invoke(new Callable<Void>() {
-                public Void call() throws Exception {
+            invoke(new Callable<Void>() {
+                public Void call() {
                     if (relativePIDL != 0) {
                         releasePIDL(relativePIDL);
                     }
@@ -224,7 +223,7 @@ final class Win32ShellFolder2 extends ShellFolder {
      */
     private boolean isPersonal;
 
-    private static String composePathForCsidl(int csidl) throws IOException {
+    private static String composePathForCsidl(int csidl) throws IOException, InterruptedException {
         String path = getFileSystemPath(csidl);
         return path == null
                 ? ("ShellFolder: 0x" + Integer.toHexString(csidl))
@@ -235,12 +234,13 @@ final class Win32ShellFolder2 extends ShellFolder {
      * Create a system special shell folder, such as the
      * desktop or Network Neighborhood.
      */
-    Win32ShellFolder2(final int csidl) throws IOException {
+    Win32ShellFolder2(final int csidl) throws IOException, InterruptedException {
         // Desktop is parent of DRIVES and NETWORK, not necessarily
         // other special shell folders.
         super(null, composePathForCsidl(csidl));
-        ShellFolder.getInvoker().invoke(new Callable<Void>() {
-            public Void call() throws Exception {
+
+        invoke(new Callable<Void>() {
+            public Void call() throws InterruptedException {
                 if (csidl == DESKTOP) {
                     initDesktop();
                 } else {
@@ -276,7 +276,7 @@ final class Win32ShellFolder2 extends ShellFolder {
                 }
                 return null;
             }
-        });
+        }, InterruptedException.class);
 
         sun.java2d.Disposer.addRecord(this, disposer);
     }
@@ -296,13 +296,13 @@ final class Win32ShellFolder2 extends ShellFolder {
     /**
      * Creates a shell folder with a parent and relative PIDL
      */
-    Win32ShellFolder2(final Win32ShellFolder2 parent, final long relativePIDL) {
+    Win32ShellFolder2(final Win32ShellFolder2 parent, final long relativePIDL) throws InterruptedException {
         super(parent,
-            ShellFolder.getInvoker().invoke(new Callable<String>() {
-                public String call() throws Exception {
+            invoke(new Callable<String>() {
+                public String call() {
                     return getFileSystemPath(parent.getIShellFolder(), relativePIDL);
                 }
-            })
+            }, RuntimeException.class)
         );
         this.disposer.relativePIDL = relativePIDL;
         getAbsolutePath();
@@ -335,8 +335,8 @@ final class Win32ShellFolder2 extends ShellFolder {
      * drive (normally "C:\").
      */
     protected Object writeReplace() throws java.io.ObjectStreamException {
-        return ShellFolder.getInvoker().invoke(new Callable<File>() {
-            public File call() throws Exception {
+        return invoke(new Callable<File>() {
+            public File call() {
                 if (isFileSystem()) {
                     return new File(getPath());
                 } else {
@@ -398,11 +398,11 @@ final class Win32ShellFolder2 extends ShellFolder {
     /**
      * Accessor for IShellFolder
      */
-    public long getIShellFolder() {
+    private long getIShellFolder() {
         if (disposer.pIShellFolder == 0) {
-            disposer.pIShellFolder =
-                ShellFolder.getInvoker().invoke(new Callable<Long>() {
-                    public Long call() throws Exception {
+            try {
+                disposer.pIShellFolder = invoke(new Callable<Long>() {
+                    public Long call() {
                         assert(isDirectory());
                         assert(parent != null);
                         long parentIShellFolder = getParentIShellFolder();
@@ -421,7 +421,10 @@ final class Win32ShellFolder2 extends ShellFolder {
                         }
                         return pIShellFolder;
                     }
-                });
+                }, RuntimeException.class);
+            } catch (InterruptedException e) {
+                // Ignore error
+            }
         }
         return disposer.pIShellFolder;
     }
@@ -505,18 +508,23 @@ final class Win32ShellFolder2 extends ShellFolder {
         }
 
         if (parent == rhs.parent || parent.equals(rhs.parent)) {
+            try {
                 return pidlsEqual(getParentIShellFolder(), disposer.relativePIDL, rhs.disposer.relativePIDL);
+            } catch (InterruptedException e) {
+                return false;
+            }
         }
 
         return false;
     }
 
-    private static boolean pidlsEqual(final long pIShellFolder, final long pidl1, final long pidl2) {
-        return ShellFolder.getInvoker().invoke(new Callable<Boolean>() {
-            public Boolean call() throws Exception {
-                return (compareIDs(pIShellFolder, pidl1, pidl2) == 0);
+    private static boolean pidlsEqual(final long pIShellFolder, final long pidl1, final long pidl2)
+            throws InterruptedException {
+        return invoke(new Callable<Boolean>() {
+            public Boolean call() {
+                return compareIDs(pIShellFolder, pidl1, pidl2) == 0;
             }
-        });
+        }, RuntimeException.class);
     }
 
     // NOTE: this method uses COM and must be called on the 'COM thread'. See ComInvoker for the details
@@ -539,14 +547,16 @@ final class Win32ShellFolder2 extends ShellFolder {
      * Return whether the given attribute flag is set for this object
      */
     public boolean hasAttribute(final int attribute) {
-        return ShellFolder.getInvoker().invoke(new Callable<Boolean>() {
-            public Boolean call() throws Exception {
+        Boolean result = invoke(new Callable<Boolean>() {
+            public Boolean call() {
                 // Caching at this point doesn't seem to be cost efficient
                 return (getAttributes0(getParentIShellFolder(),
                     getRelativePIDL(), attribute)
                     & attribute) != 0;
             }
         });
+
+        return result != null && result;
     }
 
     /**
@@ -561,9 +571,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     private static native int getAttributes0(long pParentIShellFolder, long pIDL, int attrsMask);
 
     // Return the path to the underlying file system object
+    // Should be called from the COM thread
     private static String getFileSystemPath(final long parentIShellFolder, final long relativePIDL) {
-        return ShellFolder.getInvoker().invoke(new Callable<String>() {
-            public String call() throws Exception {
         int linkedFolder = ATTRIB_LINK | ATTRIB_FOLDER;
         if (parentIShellFolder == Win32ShellFolderManager2.getNetwork().getIShellFolder() &&
                 getAttributes0(parentIShellFolder, relativePIDL, linkedFolder) == linkedFolder) {
@@ -577,16 +586,14 @@ final class Win32ShellFolder2 extends ShellFolder {
         }
         return getDisplayNameOf(parentIShellFolder, relativePIDL, SHGDN_FORPARSING);
     }
-        });
-    }
 
     // Needs to be accessible to Win32ShellFolderManager2
-    static String getFileSystemPath(final int csidl) throws IOException {
-        return ShellFolder.getInvoker().invoke(new Callable<String>() {
-            public String call() throws Exception {
+    static String getFileSystemPath(final int csidl) throws IOException, InterruptedException {
+        return invoke(new Callable<String>() {
+            public String call() throws IOException {
                 return getFileSystemPath0(csidl);
             }
-        });
+        }, IOException.class);
     }
 
     // NOTE: this method uses COM and must be called on the 'COM thread'. See ComInvoker for the details
@@ -630,13 +637,14 @@ final class Win32ShellFolder2 extends ShellFolder {
      */
     // Returns an IEnumIDList interface for an IShellFolder.  The value
     // returned must be released using releaseEnumObjects().
-    private long getEnumObjects(long pIShellFolder, final boolean includeHiddenFiles) {
-        final boolean isDesktop = (disposer.pIShellFolder == getDesktopIShellFolder());
-        return ShellFolder.getInvoker().invoke(new Callable<Long>() {
-            public Long call() throws Exception {
+    private long getEnumObjects(final boolean includeHiddenFiles) throws InterruptedException {
+        return invoke(new Callable<Long>() {
+            public Long call() {
+                boolean isDesktop = disposer.pIShellFolder == getDesktopIShellFolder();
+
                 return getEnumObjects(disposer.pIShellFolder, isDesktop, includeHiddenFiles);
             }
-        });
+        }, RuntimeException.class);
     }
 
     // Returns an IEnumIDList interface for an IShellFolder.  The value
@@ -670,8 +678,9 @@ final class Win32ShellFolder2 extends ShellFolder {
             security.checkRead(getPath());
         }
 
-        return ShellFolder.getInvoker().invoke(new Callable<File[]>() {
-            public File[] call() throws Exception {
+        try {
+            return invoke(new Callable<File[]>() {
+                public File[] call() throws InterruptedException {
                     if (!isDirectory()) {
                         return null;
                     }
@@ -691,7 +700,7 @@ final class Win32ShellFolder2 extends ShellFolder {
                     long pIShellFolder = getIShellFolder();
                     // Now we can enumerate the objects in this folder.
                     ArrayList<Win32ShellFolder2> list = new ArrayList<Win32ShellFolder2>();
-                long pEnumObjects = getEnumObjects(pIShellFolder, includeHiddenFiles);
+                    long pEnumObjects = getEnumObjects(includeHiddenFiles);
                     if (pEnumObjects != 0) {
                         long childPIDL;
                         int testedAttrs = ATTRIB_FILESYSTEM | ATTRIB_FILESYSANCESTOR;
@@ -721,7 +730,10 @@ final class Win32ShellFolder2 extends ShellFolder {
                         ? new File[0]
                         : list.toArray(new ShellFolder[list.size()]);
                 }
-        });
+            }, InterruptedException.class);
+        } catch (InterruptedException e) {
+            return new File[0];
+        }
     }
 
 
@@ -730,13 +742,13 @@ final class Win32ShellFolder2 extends ShellFolder {
      *
      * @return The child shellfolder, or null if not found.
      */
-    Win32ShellFolder2 getChildByPath(final String filePath) {
-        return ShellFolder.getInvoker().invoke(new Callable<Win32ShellFolder2>() {
-            public Win32ShellFolder2 call() throws Exception {
+    Win32ShellFolder2 getChildByPath(final String filePath) throws InterruptedException {
+        return invoke(new Callable<Win32ShellFolder2>() {
+            public Win32ShellFolder2 call() throws InterruptedException {
                 long pIShellFolder = getIShellFolder();
-                long pEnumObjects = getEnumObjects(pIShellFolder, true);
+                long pEnumObjects = getEnumObjects(true);
                 Win32ShellFolder2 child = null;
-                long childPIDL = 0;
+                long childPIDL;
 
                 while ((childPIDL = getNextChild(pEnumObjects)) != 0) {
                     if (getAttributes0(pIShellFolder, childPIDL, ATTRIB_FILESYSTEM) != 0) {
@@ -753,7 +765,7 @@ final class Win32ShellFolder2 extends ShellFolder {
                 releaseEnumObjects(pEnumObjects);
                 return child;
             }
-        });
+        }, InterruptedException.class);
     }
 
     private Boolean cachedIsLink;
@@ -791,8 +803,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     }
 
     private ShellFolder getLinkLocation(final boolean resolve) {
-        return ShellFolder.getInvoker().invoke(new Callable<ShellFolder>() {
-            public ShellFolder call() throws Exception {
+        return invoke(new Callable<ShellFolder>() {
+            public ShellFolder call() {
                 if (!isLink()) {
                     return null;
                 }
@@ -805,6 +817,8 @@ final class Win32ShellFolder2 extends ShellFolder {
                         location =
                                 Win32ShellFolderManager2.createShellFolderFromRelativePIDL(getDesktop(),
                                         linkLocationPIDL);
+                    } catch (InterruptedException e) {
+                        // Return null
                     } catch (InternalError e) {
                         // Could be a link to a non-bindable object, such as a network connection
                         // TODO: getIShellFolder() should throw FileNotFoundException instead
@@ -816,19 +830,12 @@ final class Win32ShellFolder2 extends ShellFolder {
     }
 
     // Parse a display name into a PIDL relative to the current IShellFolder.
-    long parseDisplayName(final String name) throws FileNotFoundException {
-        try {
-            return ShellFolder.getInvoker().invoke(new Callable<Long>() {
-                public Long call() throws Exception {
+    long parseDisplayName(final String name) throws IOException, InterruptedException {
+        return invoke(new Callable<Long>() {
+            public Long call() throws IOException {
                 return parseDisplayName0(getIShellFolder(), name);
             }
-            });
-        } catch (RuntimeException e) {
-            if (e.getCause() instanceof IOException) {
-                throw new FileNotFoundException("Could not find file " + name);
-            }
-            throw e;
-        }
+        }, IOException.class);
     }
 
     // NOTE: this method uses COM and must be called on the 'COM thread'. See ComInvoker for the details
@@ -846,8 +853,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     public String getDisplayName() {
         if (displayName == null) {
             displayName =
-                ShellFolder.getInvoker().invoke(new Callable<String>() {
-                    public String call() throws Exception {
+                invoke(new Callable<String>() {
+                    public String call() {
                         return getDisplayNameOf(getParentIShellFolder(),
                                 getRelativePIDL(), SHGDN_NORMAL);
                     }
@@ -867,8 +874,8 @@ final class Win32ShellFolder2 extends ShellFolder {
         if (folderType == null) {
             final long absolutePIDL = getAbsolutePIDL();
             folderType =
-                ShellFolder.getInvoker().invoke(new Callable<String>() {
-                    public String call() throws Exception {
+                invoke(new Callable<String>() {
+                    public String call() {
                         return getFolderType(absolutePIDL);
                     }
                 });
@@ -926,15 +933,12 @@ final class Win32ShellFolder2 extends ShellFolder {
 
     public static native int[] getFileChooserBitmapBits();
 
+    // Should be called from the COM thread
     private long getIShellIcon() {
         if (pIShellIcon == -1L) {
-            pIShellIcon =
-                ShellFolder.getInvoker().invoke(new Callable<Long>() {
-                    public Long call() throws Exception {
-                        return getIShellIcon(getIShellFolder());
-                    }
-                });
+            pIShellIcon = getIShellIcon(getIShellFolder());
         }
+
         return pIShellIcon;
     }
 
@@ -988,8 +992,8 @@ final class Win32ShellFolder2 extends ShellFolder {
         Image icon = getLargeIcon ? largeIcon : smallIcon;
         if (icon == null) {
             icon =
-                ShellFolder.getInvoker().invoke(new Callable<Image>() {
-                    public Image call() throws Exception {
+                invoke(new Callable<Image>() {
+                    public Image call() {
                         Image newIcon = null;
                         if (isFileSystem()) {
                             long parentIShellIcon = (parent != null)
@@ -1113,8 +1117,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     private static final int LVCFMT_CENTER = 2;
 
     public ShellFolderColumnInfo[] getFolderColumns() {
-        return ShellFolder.getInvoker().invoke(new Callable<ShellFolderColumnInfo[]>() {
-            public ShellFolderColumnInfo[] call() throws Exception {
+        return invoke(new Callable<ShellFolderColumnInfo[]>() {
+            public ShellFolderColumnInfo[] call() {
                 ShellFolderColumnInfo[] columns = doGetColumnInfo(getIShellFolder());
 
                 if (columns != null) {
@@ -1143,8 +1147,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     }
 
     public Object getFolderColumnValue(final int column) {
-        return ShellFolder.getInvoker().invoke(new Callable<Object>() {
-            public Object call() throws Exception {
+        return invoke(new Callable<Object>() {
+            public Object call() {
                 return doGetColumnValue(getParentIShellFolder(), getRelativePIDL(), column);
             }
         });
@@ -1163,8 +1167,8 @@ final class Win32ShellFolder2 extends ShellFolder {
     public void sortChildren(final List<? extends File> files) {
         // To avoid loads of synchronizations with Invoker and improve performance we
         // synchronize the whole code of the sort method once
-        getInvoker().invoke(new Callable<Void>() {
-            public Void call() throws Exception {
+        invoke(new Callable<Void>() {
+            public Void call() {
                 Collections.sort(files, new ColumnComparator(getIShellFolder(), 0));
 
                 return null;
@@ -1184,8 +1188,8 @@ final class Win32ShellFolder2 extends ShellFolder {
 
         // compares 2 objects within this folder by the specified column
         public int compare(final File o, final File o1) {
-            return ShellFolder.getInvoker().invoke(new Callable<Integer>() {
-                public Integer call() throws Exception {
+            Integer result = invoke(new Callable<Integer>() {
+                public Integer call() {
                     if (o instanceof Win32ShellFolder2
                         && o1 instanceof Win32ShellFolder2) {
                         // delegates comparison to native method
@@ -1197,6 +1201,8 @@ final class Win32ShellFolder2 extends ShellFolder {
                     return 0;
                 }
             });
+
+            return result == null ? 0 : result;
         }
     }
 }

src/windows/classes/sun/awt/shell/Win32ShellFolderManager2.java

 /*
- * Copyright 2003-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2003-2009 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
@@ -58,10 +58,15 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
     }
 
     public ShellFolder createShellFolder(File file) throws FileNotFoundException {
+        try {
             return createShellFolder(getDesktop(), file);
+        } catch (InterruptedException e) {
+            throw new FileNotFoundException("Execution was interrupted");
+        }
     }
 
-    static Win32ShellFolder2 createShellFolder(Win32ShellFolder2 parent, File file) throws FileNotFoundException {
+    static Win32ShellFolder2 createShellFolder(Win32ShellFolder2 parent, File file)
+            throws FileNotFoundException, InterruptedException {
         long pIDL;
         try {
             pIDL = parent.parseDisplayName(file.getCanonicalPath());
@@ -77,7 +82,8 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
         return folder;
     }
 
-    static Win32ShellFolder2 createShellFolderFromRelativePIDL(Win32ShellFolder2 parent, long pIDL) {
+    static Win32ShellFolder2 createShellFolderFromRelativePIDL(Win32ShellFolder2 parent, long pIDL)
+            throws InterruptedException {
         // Walk down this relative pIDL, creating new nodes for each of the entries
         while (pIDL != 0) {
             long curPIDL = Win32ShellFolder2.copyFirstPIDLEntry(pIDL);
@@ -108,7 +114,9 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
             try {
                 desktop = new Win32ShellFolder2(DESKTOP);
             } catch (IOException e) {
-                desktop = null;
+                // Ignore error
+            } catch (InterruptedException e) {
+                // Ignore error
             }
         }
         return desktop;
@@ -119,7 +127,9 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
             try {
                 drives = new Win32ShellFolder2(DRIVES);
             } catch (IOException e) {
-                drives = null;
+                // Ignore error
+            } catch (InterruptedException e) {
+                // Ignore error
             }
         }
         return drives;
@@ -132,8 +142,10 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
                 if (path != null) {
                     recent = createShellFolder(getDesktop(), new File(path));
                 }
+            } catch (InterruptedException e) {
+                // Ignore error
             } catch (IOException e) {
-                recent = null;
+                // Ignore error
             }
         }
         return recent;
@@ -144,7 +156,9 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
             try {
                 network = new Win32ShellFolder2(NETWORK);
             } catch (IOException e) {
-                network = null;
+                // Ignore error
+            } catch (InterruptedException e) {
+                // Ignore error
             }
         }
         return network;
@@ -164,8 +178,10 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
                         personal.setIsPersonal();
                     }
                 }
+            } catch (InterruptedException e) {
+                // Ignore error
             } catch (IOException e) {
-                personal = null;
+                // Ignore error
             }
         }
         return personal;
@@ -267,6 +283,9 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
                     }
                 } catch (IOException e) {
                     // Skip this value
+                } catch (InterruptedException e) {
+                    // Return empty result
+                    return new File[0];
                 }
             } while (value != null);
 
@@ -476,33 +495,39 @@ public class Win32ShellFolderManager2 extends ShellFolderManager {
             return comThread;
         }
 
-        public <T> T invoke(Callable<T> task) {
-            try {
+        public <T> T invoke(Callable<T> task) throws Exception {
             if (Thread.currentThread() == comThread) {
                 // if it's already called from the COM
                 // thread, we don't need to delegate the task
                 return task.call();
             } else {
-                    while (true) {
-                        Future<T> future = submit(task);
+                Future<T> future;
+
+                try {
+                    future = submit(task);
+                } catch (RejectedExecutionException e) {
+                    throw new InterruptedException(e.getMessage());
+                }
 
                 try {
                     return future.get();
                 } catch (InterruptedException e) {
-                            // Repeat the attempt
                     future.cancel(true);
+
+                    throw e;
+                } catch (ExecutionException e) {
+                    Throwable cause = e.getCause();
+
+                    if (cause instanceof Exception) {
+                        throw (Exception) cause;
                     }
-                    }
-                }
-            } catch (Exception e) {
-                Throwable cause = (e instanceof ExecutionException) ? e.getCause() : e;
-                if (cause instanceof RuntimeException) {
-                    throw (RuntimeException) cause;
-                }
+
                     if (cause instanceof Error) {
                         throw (Error) cause;
                     }
-                throw new RuntimeException(cause);
+
+                    throw new RuntimeException("Unexpected error", cause);
+                }
             }
         }
     }