author | shade |
Thu, 10 Oct 2019 21:54:54 +0200 | |
changeset 58544 | 8b60ae8a2569 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved. |
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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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|
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/* |
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* @test TestHumongousMoves |
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* @summary Check Shenandoah reacts on setting humongous moves correctly |
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* @key gc |
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* @requires vm.gc.Shenandoah & !vm.graal.enabled |
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* |
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
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* -XX:-ShenandoahHumongousMoves |
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* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify |
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* TestHumongousMoves |
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* |
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g |
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
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* -XX:+ShenandoahHumongousMoves |
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* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify |
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* TestHumongousMoves |
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*/ |
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import java.util.Random; |
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public class TestHumongousMoves { |
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static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation |
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static volatile Object sink; |
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public static void main(String[] args) throws Exception { |
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final int min = 0; |
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final int max = 384 * 1024; |
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long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2)); |
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Random r = new Random(); |
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for (long c = 0; c < count; c++) { |
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sink = new int[min + r.nextInt(max - min)]; |
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} |
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} |
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} |