142 lines
4.5 KiB
Java
142 lines
4.5 KiB
Java
/*
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* Copyright (c) 2001, 2017, 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 4421190
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* @summary Tests that Image I/O statics may be referenced properly from
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* multiple AppContexts, as would be the case for multiple Applets in a
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* single VM. Each AppContext should get its own copy of the registry
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* and the caching parameters in the ImageIO class.
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* @modules java.desktop/sun.awt
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*/
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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.spi.IIORegistry;
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import sun.awt.SunToolkit;
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class TestThread extends Thread {
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IIORegistry registry;
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boolean useCache;
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File cacheDirectory;
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boolean cacheSettingsOK = false;
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String threadName;
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boolean gotCrosstalk = false;
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public TestThread(ThreadGroup tg,
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boolean useCache, File cacheDirectory,
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String threadName) {
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super(tg, threadName);
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this.useCache = useCache;
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this.cacheDirectory = cacheDirectory;
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this.threadName = threadName;
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}
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public void run() {
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// System.out.println("Thread " + threadName + " in thread group " +
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// getThreadGroup().getName());
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// Create a new AppContext as though we were an applet
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SunToolkit.createNewAppContext();
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// Get default registry and store reference
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this.registry = IIORegistry.getDefaultInstance();
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for (int i = 0; i < 10; i++) {
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// System.out.println(threadName +
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// ": setting cache parameters to " +
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// useCache + ", " + cacheDirectory);
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ImageIO.setUseCache(useCache);
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ImageIO.setCacheDirectory(cacheDirectory);
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try {
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sleep(1000L);
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} catch (InterruptedException e) {
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}
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// System.out.println(threadName + ": reading cache parameters");
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boolean newUseCache = ImageIO.getUseCache();
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File newCacheDirectory = ImageIO.getCacheDirectory();
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if (newUseCache != useCache ||
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newCacheDirectory != cacheDirectory) {
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// System.out.println(threadName + ": got " +
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// newUseCache + ", " +
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// newCacheDirectory);
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// System.out.println(threadName + ": crosstalk encountered!");
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gotCrosstalk = true;
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}
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}
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}
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public IIORegistry getRegistry() {
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return registry;
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}
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public boolean gotCrosstalk() {
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return gotCrosstalk;
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}
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}
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public class AppContextTest {
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public AppContextTest() {
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ThreadGroup tg0 = new ThreadGroup("ThreadGroup0");
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ThreadGroup tg1 = new ThreadGroup("ThreadGroup1");
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TestThread t0 =
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new TestThread(tg0, false, null, "TestThread 0");
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TestThread t1 =
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new TestThread(tg1, true, new File("."), "TestThread 1");
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t0.start();
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t1.start();
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try {
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t0.join();
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} catch (InterruptedException ie0) {
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}
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try {
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t1.join();
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} catch (InterruptedException ie1) {
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}
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if (t0.gotCrosstalk() || t1.gotCrosstalk()) {
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throw new RuntimeException("ImageIO methods had crosstalk!");
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}
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if (t0.getRegistry() == t1.getRegistry()) {
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throw new RuntimeException("ThreadGroups had same IIORegistry!");
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}
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}
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public static void main(String[] args) throws IOException {
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new AppContextTest();
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}
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}
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