1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @key headful
  27  * @bug 6396844
  28  * @summary Tests memory leak for 20000 files
  29  * @author Sergey Malenkov
  30  * @library ../../regtesthelpers
  31  * @modules java.desktop/sun.java2d
  32  * @build Util
  33  * @run main/othervm/timeout=1000 -mx128m TwentyThousandTest
  34  */
  35 
  36 import sun.java2d.Disposer;
  37 import sun.java2d.DisposerRecord;
  38 
  39 import javax.swing.*;
  40 import java.awt.event.HierarchyEvent;
  41 import java.awt.event.HierarchyListener;
  42 import java.io.File;
  43 import java.io.FileWriter;
  44 
  45 public class TwentyThousandTest {
  46 
  47     private static final int FILES = 20000;
  48     private static final int ATTEMPTS = 20;
  49     private static final int INTERVAL = 100;
  50 
  51     private static String tmpDir;
  52 
  53     private static volatile boolean disposerComplete;
  54 
  55     public static void main(String[] args) throws Exception {
  56         tmpDir = System.getProperty("java.io.tmpdir");
  57 
  58         if (tmpDir.length() == 0) { //'java.io.tmpdir' isn't guaranteed to be defined
  59             tmpDir = System.getProperty("user.home");
  60         }
  61 
  62         System.out.println("Temp directory: " + tmpDir);
  63 
  64         System.out.println("Creating " + FILES + " files");
  65 
  66         for (int i = 0; i < FILES; i++) {
  67             File file = getTempFile(i);
  68 
  69             FileWriter writer = new FileWriter(file);
  70             writer.write("File " + i);
  71             writer.close();
  72         }
  73 
  74         for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
  75             if (laf.getClassName().contains("Motif")) {
  76                 continue;
  77             }
  78 
  79             UIManager.setLookAndFeel(laf.getClassName());
  80 
  81             System.out.println("Do " + ATTEMPTS + " attempts for " + laf.getClassName());
  82 
  83             for (int i = 0; i < ATTEMPTS; i++) {
  84                 System.out.print(i + " ");
  85 
  86                 doAttempt();
  87             }
  88 
  89             System.out.println();
  90         }
  91 
  92         System.out.println("Removing " + FILES + " files");
  93 
  94         for (int i = 0; i < FILES; i++) {
  95             getTempFile(i).delete();
  96         }
  97 
  98         System.out.println("Test passed successfully");
  99     }
 100 
 101     private static File getTempFile(int i) {
 102         return new File(tmpDir, "temp" + i + ".txt");
 103     }
 104 
 105     private static void doAttempt() throws Exception {
 106         SwingUtilities.invokeAndWait(new Runnable() {
 107             public void run() {
 108                 final JFileChooser chooser = new JFileChooser(tmpDir);
 109 
 110                 chooser.updateUI();
 111 
 112                 // Postpone JFileChooser closing until it becomes visible
 113                 chooser.addHierarchyListener(new HierarchyListener() {
 114                     @Override
 115                     public void hierarchyChanged(HierarchyEvent e) {
 116                         if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
 117                             if (chooser.isShowing()) {
 118                                 Thread thread = new Thread(new Runnable() {
 119                                     public void run() {
 120                                         try {
 121                                             Thread.sleep(INTERVAL);
 122 
 123                                             // Close JFileChooser
 124                                             SwingUtilities.invokeLater(new Runnable() {
 125                                                 public void run() {
 126                                                     chooser.cancelSelection();
 127                                                 }
 128                                             });
 129                                         } catch (InterruptedException e) {
 130                                             throw new RuntimeException(e);
 131                                         }
 132                                     }
 133                                 });
 134 
 135                                 thread.start();
 136                             }
 137                         }
 138                     }
 139                 });
 140 
 141                 chooser.showOpenDialog(null);
 142             }
 143         });
 144 
 145         DisposerRecord disposerRecord = new DisposerRecord() {
 146             public void dispose() {
 147                 disposerComplete = true;
 148             }
 149         };
 150 
 151         disposerComplete = false;
 152 
 153         Disposer.addRecord(new Object(), disposerRecord);
 154 
 155         while (!disposerComplete) {
 156             Util.generateOOME();
 157         }
 158     }
 159 }