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/*
* Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved.
*
* 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 TestLargeObjectAlignment
* @summary Shenandoah crashes with -XX:ObjectAlignmentInBytes=16
* @key gc randomness
* @requires vm.gc.Shenandoah & !vm.graal.enabled & (vm.bits == "64")
* @library /test/lib
*
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -Xint TestLargeObjectAlignment
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:-TieredCompilation TestLargeObjectAlignment
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=1 TestLargeObjectAlignment
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=4 TestLargeObjectAlignment
*/
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import jdk.test.lib.Utils;
public class TestLargeObjectAlignment {
static final int SLABS_COUNT = Integer.getInteger("slabs", 10000);
static final int NODE_COUNT = Integer.getInteger("nodes", 10000);
static final long TIME_NS = 1000L * 1000L * Integer.getInteger("timeMs", 5000);
static Object[] objects;
public static void main(String[] args) throws Exception {
objects = new Object[SLABS_COUNT];
long start = System.nanoTime();
Random rng = Utils.getRandomInstance();
while (System.nanoTime() - start < TIME_NS) {
objects[rng.nextInt(SLABS_COUNT)] = createSome();
}
}
public static Object createSome() {
List<Integer> result = new ArrayList<Integer>();
for (int c = 0; c < NODE_COUNT; c++) {
result.add(new Integer(c));
}
return result;
}
}
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