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/*
* Copyright (c) 2018, 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.
*/
import java.awt.AWTEvent;
import java.awt.event.InvocationEvent;
import java.lang.reflect.Constructor;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import sun.awt.AppContext;
import sun.awt.SunToolkit;
/**
* @test
* @bug 8204142
* @author Sergey Bylokhov
* @key headful
* @modules java.desktop/sun.awt
* @run main/othervm/timeout=30 MultipleContextsUnitTest
*/
public final class MultipleContextsUnitTest {
private static final int COUNT = 20;
private static final AppContext[] apps = new AppContext[COUNT];
private static final CountDownLatch go = new CountDownLatch(1);
private static final CountDownLatch end = new CountDownLatch(COUNT);
private static volatile int createSENumber = 0;
private static volatile int dispatchSENumber = 0;
public static void main(final String[] args) throws Exception {
for (int i = 0; i < COUNT; i++) {
Thread t = testThread(i);
t.start();
t.join();
}
for (AppContext app : apps) {
SunToolkit.postEvent(app, new InvocationEvent(new Object(), () -> {
try {
go.await();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}));
}
// eventOne - created first, but posted last
AWTEvent eventOne = getSequencedEvent();
{
// eventTwo and eventThree - posted in the reverse order
AppContext app = apps[1];
AWTEvent eventTwo = getSequencedEvent();
AWTEvent eventThree = getSequencedEvent();
SunToolkit.postEvent(app, eventThree);
SunToolkit.postEvent(app, eventTwo);
SunToolkit.postEvent(app, new InvocationEvent(new Object(), () -> {
System.err.println(AppContext.getAppContext());
end.countDown();
}));
}
for (int i = 2; i < apps.length; i++) {
// eventTwo and eventThree - posted in the correct order
AppContext app = apps[i];
AWTEvent eventTwo = getSequencedEvent();
SunToolkit.postEvent(app, eventTwo);
AtomicReference<Boolean> called1 = new AtomicReference(false);
AtomicReference<Boolean> called2 = new AtomicReference(false);
int num1 = createSENumber;
SunToolkit.postEvent(app, new InvocationEvent(new Object(), () -> {
if (dispatchSENumber < num1) {
throw new RuntimeException("Dispatched too early");
}
called1.set(true);
if (called2.get()) {
throw new RuntimeException("Second event is called before first");
}
}));
AWTEvent eventThree = getSequencedEvent();
SunToolkit.postEvent(app, eventThree);
int num2 = createSENumber;
SunToolkit.postEvent(app, new InvocationEvent(new Object(), () -> {
if (dispatchSENumber < num2) {
throw new RuntimeException("Dispatched too early");
}
called2.set(true);
if (!called1.get()) {
throw new RuntimeException("First event is not called before second");
}
System.err.println(AppContext.getAppContext());
end.countDown();
}));
}
// eventOne should flush all EDT
SunToolkit.postEvent(apps[0], eventOne);
SunToolkit.postEvent(apps[0], new InvocationEvent(new Object(), () -> {
System.err.println(AppContext.getAppContext());
end.countDown();
}));
go.countDown();
System.err.println("Start to wait");
end.await();
System.err.println("End to wait");
}
private static Thread testThread(int index) {
final ThreadGroup group = new ThreadGroup("TG " + index);
return new Thread(group, () -> {
apps[index] = SunToolkit.createNewAppContext();
});
}
private static AWTEvent getSequencedEvent()
{
int num = createSENumber++;
InvocationEvent wrapMe = new InvocationEvent(new Object(), () -> {
if (num != dispatchSENumber++) {
System.err.println("num: " + num);
System.err.println("dispatchSENumber: " + dispatchSENumber);
throw new RuntimeException("Wrong order");
}
});
try {
/*
* SequencedEvent is a package private class, which cannot be instantiated
* by importing. So use reflection to create an instance.
*/
Class<? extends AWTEvent> seqClass = (Class<? extends AWTEvent>) Class.forName("java.awt.SequencedEvent");
Constructor<? extends AWTEvent>
seqConst = seqClass.getConstructor(AWTEvent.class);
seqConst.setAccessible(true);
return seqConst.newInstance(wrapMe);
} catch (Throwable err) {
throw new RuntimeException("Unable to instantiate SequencedEvent",err);
}
}
}
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