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