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
33import java.awt.image.BufferedImage;
34import java.io.IOException;
35
36import javax.imageio.ImageIO;
37import javax.imageio.ImageTypeSpecifier;
38import javax.imageio.ImageWriteParam;
39import javax.imageio.ImageWriter;
40import javax.imageio.metadata.IIOMetadata;
41
42public 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}
78