1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   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
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  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  * @bug 6396844
  27  * @summary Tests memory leak for 20000 files
  28  * @author Sergey Malenkov
  29  * @library ../../regtesthelpers
  30  * @build Util
  31  * @run main/othervm/timeout=1000 -mx128m TwentyThousandTest
  32  */
  33 
  34 import sun.java2d.Disposer;
  35 import sun.java2d.DisposerRecord;
  36 
  37 import javax.swing.*;
  38 import java.awt.event.HierarchyEvent;
  39 import java.awt.event.HierarchyListener;
  40 import java.io.File;
  41 import java.io.FileWriter;
  42 
  43 public class TwentyThousandTest {
  44 
  45     private static final int FILES = 20000;
  46     private static final int ATTEMPTS = 20;
  47     private static final int INTERVAL = 100;
  48 
  49     private static String tmpDir;
  50 
  51     private static volatile boolean disposerComplete;
  52 
  53     public static void main(String[] args) throws Exception {
  54         tmpDir = System.getProperty("java.io.tmpdir");
  55 
  56         if (tmpDir.length() == 0) { //'java.io.tmpdir' isn't guaranteed to be defined
  57             tmpDir = System.getProperty("user.home");
  58         }
  59 
  60         System.out.println("Temp directory: " + tmpDir);
  61 
  62         System.out.println("Creating " + FILES + " files");
  63 
  64         for (int i = 0; i < FILES; i++) {
  65             File file = getTempFile(i);
  66 
  67             FileWriter writer = new FileWriter(file);
  68             writer.write("File " + i);
  69             writer.close();
  70         }
  71 
  72         for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
  73             if (laf.getClassName().contains("Motif")) {
  74                 continue;
  75             }
  76 
  77             UIManager.setLookAndFeel(laf.getClassName());
  78 
  79             System.out.println("Do " + ATTEMPTS + " attempts for " + laf.getClassName());
  80 
  81             for (int i = 0; i < ATTEMPTS; i++) {
  82                 System.out.print(i + " ");
  83 
  84                 doAttempt();
  85             }
  86 
  87             System.out.println();
  88         }
  89 
  90         System.out.println("Removing " + FILES + " files");
  91 
  92         for (int i = 0; i < FILES; i++) {
  93             getTempFile(i).delete();
  94         }
  95 
  96         System.out.println("Test passed successfully");
  97     }
  98 
  99     private static File getTempFile(int i) {
 100         return new File(tmpDir, "temp" + i + ".txt");
 101     }
 102 
 103     private static void doAttempt() throws Exception {
 104         SwingUtilities.invokeAndWait(new Runnable() {
 105             public void run() {
 106                 final JFileChooser chooser = new JFileChooser(tmpDir);
 107 
 108                 chooser.updateUI();
 109 
 110                 // Postpone JFileChooser closing until it becomes visible
 111                 chooser.addHierarchyListener(new HierarchyListener() {
 112                     @Override
 113                     public void hierarchyChanged(HierarchyEvent e) {
 114                         if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
 115                             if (chooser.isShowing()) {
 116                                 Thread thread = new Thread(new Runnable() {
 117                                     public void run() {
 118                                         try {
 119                                             Thread.sleep(INTERVAL);
 120 
 121                                             // Close JFileChooser
 122                                             SwingUtilities.invokeLater(new Runnable() {
 123                                                 public void run() {
 124                                                     chooser.cancelSelection();
 125                                                 }
 126                                             });
 127                                         } catch (InterruptedException e) {
 128                                             throw new RuntimeException(e);
 129                                         }
 130                                     }
 131                                 });
 132 
 133                                 thread.start();
 134                             }
 135                         }
 136                     }
 137                 });
 138 
 139                 chooser.showOpenDialog(null);
 140             }
 141         });
 142 
 143         DisposerRecord disposerRecord = new DisposerRecord() {
 144             public void dispose() {
 145                 disposerComplete = true;
 146             }
 147         };
 148 
 149         disposerComplete = false;
 150 
 151         Disposer.addRecord(new Object(), disposerRecord);
 152 
 153         while (!disposerComplete) {
 154             Util.generateOOME();
 155         }
 156     }
 157 }