66 lines
2.3 KiB
Java
66 lines
2.3 KiB
Java
/*
|
|
* Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* @test
|
|
* @summary Check Shenandoah reacts on setting humongous moves correctly
|
|
* @key randomness
|
|
* @requires vm.gc.Shenandoah
|
|
* @library /test/lib
|
|
*
|
|
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
|
|
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
|
|
* -XX:-ShenandoahHumongousMoves
|
|
* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
|
|
* TestHumongousMoves
|
|
*
|
|
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
|
|
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
|
|
* -XX:+ShenandoahHumongousMoves
|
|
* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
|
|
* TestHumongousMoves
|
|
*/
|
|
|
|
import java.util.Random;
|
|
import jdk.test.lib.Utils;
|
|
|
|
public class TestHumongousMoves {
|
|
|
|
static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
|
|
|
|
static volatile Object sink;
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
final int min = 0;
|
|
final int max = 384 * 1024;
|
|
long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
|
|
|
|
Random r = Utils.getRandomInstance();
|
|
for (long c = 0; c < count; c++) {
|
|
sink = new int[min + r.nextInt(max - min)];
|
|
}
|
|
}
|
|
|
|
}
|