author | phh |
Sat, 30 Nov 2019 14:33:05 -0800 | |
changeset 59330 | 5b96c12f909d |
parent 53523 | 4c5184c56dc2 |
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/* |
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* Copyright (c) 2017, 2018, Red Hat, 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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package gc.epsilon; |
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/** |
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* @test TestManyThreads |
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* @key gc |
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* @requires vm.gc.Epsilon & !vm.graal.enabled |
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* @summary Test allocations from many threads |
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* |
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* @run main/othervm -Xmx128m -Xss512k -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xint -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:-TieredCompilation -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* |
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* @run main/othervm -Xmx128m -Xss512k -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xint -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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* @run main/othervm -Xmx128m -Xss512k -Xbatch -Xcomp -XX:-TieredCompilation -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestManyThreads |
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*/ |
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import java.util.concurrent.atomic.*; |
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public class TestManyThreads { |
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static int COUNT = Integer.getInteger("count", 128); // 128 * 4M max tlabs = 512M, would overflow without TLAB sizing |
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static volatile Object sink; |
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static volatile Throwable failed; |
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static final AtomicInteger allocated = new AtomicInteger(); |
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public static void workload() { |
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try { |
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sink = new Object(); |
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allocated.incrementAndGet(); |
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Thread.sleep(3600 * 1000); |
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} catch (Throwable e) { |
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failed = e; |
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} |
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} |
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public static void main(String[] args) throws Throwable { |
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for (int c = 0; c < COUNT; c++) { |
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Thread t = new Thread(TestManyThreads::workload); |
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t.setDaemon(true); |
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t.start(); |
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} |
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while ((failed == null) && (allocated.get() != COUNT)) { |
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Thread.sleep(100); |
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} |
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if (failed != null) { |
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throw failed; |
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} |
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} |
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} |