115 lines
3.6 KiB
Java
115 lines
3.6 KiB
Java
/*
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* Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 6547241
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* @summary Test verifies that concurrent usage of jpeg writer instance
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* by number of threads does not cause crash in jpeg library.
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* @run main ConcurrentWritingTest
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*/
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.RadialGradientPaint;
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import java.awt.geom.Point2D;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageWriter;
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import javax.imageio.stream.ImageOutputStream;
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public class ConcurrentWritingTest extends Thread {
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static ImageWriter w = null;
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static File pwd = new File(".");
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static BufferedImage img;
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private static int MAX_THREADS = 50;
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private static int completeCount = 0;
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private static Object lock = new Object();
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public static void main(String[] args) throws Exception {
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img = createTestImage();
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w = ImageIO.getImageWritersByFormatName("JPEG").next();
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for (int i = 0; i < MAX_THREADS; i++) {
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(new ConcurrentWritingTest()).start();
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}
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// wait for threads
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boolean needWait = true;
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while(needWait) {
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synchronized(lock) {
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needWait = completeCount < MAX_THREADS;
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}
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}
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System.out.println("Test PASSED");
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}
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public void run() {
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try {
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File f = File.createTempFile("writer_", ".jpg", pwd);
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ImageOutputStream ios = ImageIO.createImageOutputStream(f);
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w.setOutput(ios);
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Thread.sleep(70);
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w.write(img);
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Thread.sleep(70);
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w.reset();
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} catch (IllegalStateException e) {
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System.out.println(e);
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} catch (IOException e) {
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System.out.println(e);
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} catch (Throwable e) {
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// Unexpected exception. Test failed.
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throw new RuntimeException("Test failed.", e);
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} finally {
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synchronized(lock) {
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completeCount ++;
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}
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}
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}
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private static BufferedImage createTestImage() {
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int w = 1024;
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int h = 768;
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BufferedImage img = new
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BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
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Graphics2D g = img.createGraphics();
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Color[] colors = { Color.red, Color.green, Color.blue };
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float[] dist = {0.0f, 0.5f, 1.0f };
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Point2D center = new Point2D.Float(0.5f * w, 0.5f * h);
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RadialGradientPaint p =
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new RadialGradientPaint(center, 0.5f * w, dist, colors);
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g.setPaint(p);
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g.fillRect(0, 0, w, h);
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g.dispose();
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return img;
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}
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}
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