112 lines
3.4 KiB
Java
112 lines
3.4 KiB
Java
/*
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* Copyright (c) 2019, 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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import java.awt.Frame;
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import java.awt.Graphics;
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import java.util.concurrent.TimeUnit;
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/**
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* @test
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* @bug 8235638 8235739 8285094
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* @key headful
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*/
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public final class GetGraphicsStressTest {
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static volatile Throwable failed;
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static volatile long endtime;
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public static void main(final String[] args) throws Exception {
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// Catch all uncaught exceptions and treat them as test failure
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Thread.setDefaultUncaughtExceptionHandler((t, e) -> failed = e);
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// Will run the test no more than 20 seconds
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for (int i = 0; i < 4; i++) {
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endtime = System.nanoTime() + TimeUnit.SECONDS.toNanos(5);
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test();
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}
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/*
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* This test needs to give the desktop time to recover to avoid
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* destabilising other tests.
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*/
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Thread.sleep(10000);
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}
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private static void test() throws Exception {
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Frame f = new Frame();
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f.setSize(100, 100);
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f.setLocationRelativeTo(null);
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f.setVisible(true);
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Thread thread1 = new Thread(() -> {
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while (!isComplete()) {
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f.removeNotify();
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f.addNotify();
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}
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});
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Thread thread2 = new Thread(() -> {
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while (!isComplete()) {
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Graphics g = f.getGraphics();
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if (g != null) {
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g.dispose();
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}
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}
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});
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Thread thread3 = new Thread(() -> {
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while (!isComplete()) {
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Graphics g = f.getGraphics();
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if (g != null) {
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g.dispose();
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}
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}
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});
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Thread thread4 = new Thread(() -> {
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while (!isComplete()) {
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Graphics g = f.getGraphics();
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if (g != null) {
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g.drawLine(0, 0, 4, 4); // just in case...
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g.dispose();
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}
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}
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});
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thread1.start();
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thread2.start();
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thread3.start();
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thread4.start();
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thread1.join();
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thread2.join();
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thread3.join();
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thread4.join();
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f.dispose();
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if (failed != null) {
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System.err.println("Test failed");
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failed.printStackTrace();
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throw new RuntimeException(failed);
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}
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}
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private static boolean isComplete() {
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return endtime - System.nanoTime() < 0 || failed != null;
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}
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}
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