47 lines
1.7 KiB
Java
47 lines
1.7 KiB
Java
/*
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* Copyright (c) 2021, 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 8274349
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* @run main/othervm -XX:ActiveProcessorCount=1 Uniprocessor
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* @summary Check the default FJ pool has a reasonable default parallelism
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* level in a uniprocessor environment.
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*/
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.ForkJoinPool;
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public class Uniprocessor {
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static volatile boolean done = false;
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public static void main(String[] args) throws InterruptedException {
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// If the default parallelism were zero then this task would not
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// complete and the test will timeout.
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CountDownLatch ran = new CountDownLatch(1);
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ForkJoinPool.commonPool().submit(() -> ran.countDown());
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ran.await();
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}
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}
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