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/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8020983 8024697
* @summary Test verifies that jpeg writer instances are collected
* even if destroy() or reset() methods is not invoked.
*
* @run main JpegWriterLeakTest
*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
public class JpegWriterLeakTest {
public static void main(String[] args) {
final ReferenceQueue<ImageWriter> queue = new ReferenceQueue<>();
final ArrayList<Reference<? extends ImageWriter>> refs = new ArrayList<>();
int count = 2;
do {
ImageWriter writer =
ImageIO.getImageWritersByFormatName("jpeg").next();
final WeakReference<? extends ImageWriter> ref =
new WeakReference<>(writer, queue);
refs.add(ref);
try {
final ImageOutputStream os =
ImageIO.createImageOutputStream(new ByteArrayOutputStream());
writer.setOutput(os);
writer.write(getImage());
// NB: dispose() or reset() workarounds the problem.
} catch (IOException e) {
} finally {
writer = null;
}
count--;
} while (count > 0);
System.out.println("Wait for GC...");
final long testTimeOut = 60000L;
final long startTime = System.currentTimeMillis();
while (!refs.isEmpty()) {
// check for the test timeout
final long now = System.currentTimeMillis();
if (now - startTime > testTimeOut) {
System.out.println();
throw new RuntimeException("Test FAILED.");
}
System.gc();
try {
System.out.print(".");
Thread.sleep(1000);
} catch (InterruptedException e) {
};
Reference<? extends ImageWriter> r = queue.poll();
if (r != null) {
System.out.println("Got reference: " + r);
refs.remove(r);
}
}
System.out.println("Test PASSED.");
}
private static BufferedImage getImage() {
int width = 2500;
int height = new Random().nextInt(2500) + 1;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.blue);
g.fillRect(0, 0, width, height);
return image;
}
}
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