| /* |
| * 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 |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled & (vm.bits == "64") |
| * |
| * @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.concurrent.ThreadLocalRandom; |
| |
| 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(); |
| while (System.nanoTime() - start < TIME_NS) { |
| objects[ThreadLocalRandom.current().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; |
| } |
| |
| } |