1 /*
   2  * Copyright (c) 2005, 2017, 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 6294363
  27  * @summary Test verifies that creation of tree representation of the native
  28  *          image metadata for USHORT_GRAY images does not cause the
  29  *          OutOfMemoryError
  30  * @run main/othervm -Xms32M -Xmx32M UshortOutOfMemoryTest
  31  */
  32 
  33 import java.awt.image.BufferedImage;
  34 import java.io.IOException;
  35 
  36 import javax.imageio.ImageIO;
  37 import javax.imageio.ImageTypeSpecifier;
  38 import javax.imageio.ImageWriteParam;
  39 import javax.imageio.ImageWriter;
  40 import javax.imageio.metadata.IIOMetadata;
  41 
  42 public class UshortOutOfMemoryTest {
  43     private int type;
  44     private ImageWriter w;
  45 
  46     public UshortOutOfMemoryTest(int type) {
  47         this.type = type;
  48         w = ImageIO.getImageWritersByFormatName("GIF").next();
  49     }
  50 
  51     public void testGetAsTree() {
  52         ImageWriteParam p = w.getDefaultWriteParam();
  53         IIOMetadata m =
  54             w.getDefaultImageMetadata(ImageTypeSpecifier.createFromBufferedImageType(type), p);
  55 
  56         String format = m.getNativeMetadataFormatName();
  57         System.out.println("native format: " + format);
  58 
  59         int count = 0;
  60         try {
  61             while (count < 100) {
  62                 System.out.println(" test " + count++);
  63                 m.getAsTree(format);
  64             }
  65         } catch (OutOfMemoryError e) {
  66             System.gc();
  67             throw new RuntimeException("Test failed. Number of performed operations: " + count, e);
  68         }
  69     }
  70 
  71 
  72     public static void main(String[] args) throws IOException {
  73         UshortOutOfMemoryTest t = new UshortOutOfMemoryTest(
  74                 BufferedImage.TYPE_USHORT_GRAY);
  75         t.testGetAsTree();
  76     }
  77 }