69 lines
2.2 KiB
Java
69 lines
2.2 KiB
Java
/*
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* Copyright (c) 2023, Azul Systems, Inc. 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.util.concurrent.CountDownLatch;
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/**
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* @test
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* @bug 6995195
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* @summary Verify that concurrent classloading of GraphicsPrimitiveMgr
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* and Blit doesn't deadlock
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* @run main/othervm/timeout=20 GraphicsPrimitiveMgrTest
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*/
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public class GraphicsPrimitiveMgrTest {
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private static volatile CountDownLatch latch;
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private static final String C1 = "sun.java2d.loops.GraphicsPrimitiveMgr";
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private static final String C2 = "sun.java2d.loops.Blit";
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public static void main(final String[] args)
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throws ClassNotFoundException, InterruptedException
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{
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// force loading awt library
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Class.forName("java.awt.Toolkit");
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latch = new CountDownLatch(2);
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Thread t1 = new Thread(() -> loadClass(C1));
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Thread t2 = new Thread(() -> loadClass(C2));
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t1.start();
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t2.start();
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t1.join();
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t2.join();
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}
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private static void loadClass(String className) {
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System.out.println(Thread.currentThread().getName() + " loading " + className);
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try {
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latch.countDown();
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latch.await();
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Class.forName(className);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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}
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