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  * @key headful
  27  * @bug 6396844
  28  * @summary Tests memory leak for 20000 files
  29  * @author Sergey Malenkov
  30  * @library ../../regtesthelpers
  31  * @build Util
  32  * @run main/othervm/timeout=1000 -mx128m TwentyThousandTest
  33  */
  34 
  35 import sun.java2d.Disposer;
  36 import sun.java2d.DisposerRecord;
  37 
  38 import javax.swing.*;
  39 import java.awt.event.HierarchyEvent;
  40 import java.awt.event.HierarchyListener;
  41 import java.io.File;
  42 import java.io.FileWriter;
  43 
  44 public class TwentyThousandTest {
  45 
  46     private static final int FILES = 20000;
  47     private static final int ATTEMPTS = 20;
  48     private static final int INTERVAL = 100;
  49 
  50     private static String tmpDir;
  51 
  52     private static volatile boolean disposerComplete;
  53 
  54     public static void main(String[] args) throws Exception {
  55         tmpDir = System.getProperty("java.io.tmpdir");
  56 
  57         if (tmpDir.length() == 0) { //'java.io.tmpdir' isn't guaranteed to be defined
  58             tmpDir = System.getProperty("user.home");
  59         }
  60 
  61         System.out.println("Temp directory: " + tmpDir);
  62 
  63         System.out.println("Creating " + FILES + " files");
  64 
  65         for (int i = 0; i < FILES; i++) {
  66             File file = getTempFile(i);
  67 
  68             FileWriter writer = new FileWriter(file);
  69             writer.write("File " + i);
  70             writer.close();
  71         }
  72 
  73         for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
  74             if (laf.getClassName().contains("Motif")) {
  75                 continue;
  76             }
  77 
  78             UIManager.setLookAndFeel(laf.getClassName());
  79 
  80             System.out.println("Do " + ATTEMPTS + " attempts for " + laf.getClassName());
  81 
  82             for (int i = 0; i < ATTEMPTS; i++) {
  83                 System.out.print(i + " ");
  84 
  85                 doAttempt();
  86             }
  87 
  88             System.out.println();
  89         }
  90 
  91         System.out.println("Removing " + FILES + " files");
  92 
  93         for (int i = 0; i < FILES; i++) {
  94             getTempFile(i).delete();
  95         }
  96 
  97         System.out.println("Test passed successfully");
  98     }
  99 
 100     private static File getTempFile(int i) {
 101         return new File(tmpDir, "temp" + i + ".txt");
 102     }
 103 
 104     private static void doAttempt() throws Exception {
 105         SwingUtilities.invokeAndWait(new Runnable() {
 106             public void run() {
 107                 final JFileChooser chooser = new JFileChooser(tmpDir);
 108 
 109                 chooser.updateUI();
 110 
 111                 // Postpone JFileChooser closing until it becomes visible
 112                 chooser.addHierarchyListener(new HierarchyListener() {
 113                     @Override
 114                     public void hierarchyChanged(HierarchyEvent e) {
 115                         if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
 116                             if (chooser.isShowing()) {
 117                                 Thread thread = new Thread(new Runnable() {
 118                                     public void run() {
 119                                         try {
 120                                             Thread.sleep(INTERVAL);
 121 
 122                                             // Close JFileChooser
 123                                             SwingUtilities.invokeLater(new Runnable() {
 124                                                 public void run() {
 125                                                     chooser.cancelSelection();
 126                                                 }
 127                                             });
 128                                         } catch (InterruptedException e) {
 129                                             throw new RuntimeException(e);
 130                                         }
 131                                     }
 132                                 });
 133 
 134                                 thread.start();
 135                             }
 136                         }
 137                     }
 138                 });
 139 
 140                 chooser.showOpenDialog(null);
 141             }
 142         });
 143 
 144         DisposerRecord disposerRecord = new DisposerRecord() {
 145             public void dispose() {
 146                 disposerComplete = true;
 147             }
 148         };
 149 
 150         disposerComplete = false;
 151 
 152         Disposer.addRecord(new Object(), disposerRecord);
 153 
 154         while (!disposerComplete) {
 155             Util.generateOOME();
 156         }
 157     }
 158 }