1 /*
2 * Copyright (c) 2016, Red Hat, Inc. and/or its affiliates.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 /*
25 * @test LargeObjectAlignment
26 * @summary Shenandoah crashes with -XX:ObjectAlignmentInBytes=16
27 * @run main/othervm -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -Xint LargeObjectAlignment
28 * @run main/othervm -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:-TieredCompilation LargeObjectAlignment
29 * @run main/othervm -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=1 LargeObjectAlignment
30 * @run main/othervm -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=4 LargeObjectAlignment
31 */
32
33 import java.util.ArrayList;
34 import java.util.List;
35 import java.util.concurrent.ThreadLocalRandom;
36
37 public class LargeObjectAlignment {
38
39 static final int SLABS_COUNT = Integer.getInteger("slabs", 10000);
40 static final int NODE_COUNT = Integer.getInteger("nodes", 10000);
41 static final long TIME_NS = 1000L * 1000L * Integer.getInteger("timeMs", 5000);
42
43 static Object[] objects;
44
45 public static void main(String[] args) throws Exception {
46 objects = new Object[SLABS_COUNT];
47
48 long start = System.nanoTime();
49 while (System.nanoTime() - start < TIME_NS) {
50 objects[ThreadLocalRandom.current().nextInt(SLABS_COUNT)] = createSome();
51 }
52 }
53
54 public static Object createSome() {
55 List<Integer> result = new ArrayList<Integer>();
56 for (int c = 0; c < NODE_COUNT; c++) {
57 result.add(new Integer(c));
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1 /*
2 * Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 /*
25 * @test TestLargeObjectAlignment
26 * @summary Shenandoah crashes with -XX:ObjectAlignmentInBytes=16
27 * @key gc
28 *
29 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -Xint TestLargeObjectAlignment
30 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:-TieredCompilation TestLargeObjectAlignment
31 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=1 TestLargeObjectAlignment
32 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=4 TestLargeObjectAlignment
33 */
34
35 import java.util.ArrayList;
36 import java.util.List;
37 import java.util.concurrent.ThreadLocalRandom;
38
39 public class TestLargeObjectAlignment {
40
41 static final int SLABS_COUNT = Integer.getInteger("slabs", 10000);
42 static final int NODE_COUNT = Integer.getInteger("nodes", 10000);
43 static final long TIME_NS = 1000L * 1000L * Integer.getInteger("timeMs", 5000);
44
45 static Object[] objects;
46
47 public static void main(String[] args) throws Exception {
48 objects = new Object[SLABS_COUNT];
49
50 long start = System.nanoTime();
51 while (System.nanoTime() - start < TIME_NS) {
52 objects[ThreadLocalRandom.current().nextInt(SLABS_COUNT)] = createSome();
53 }
54 }
55
56 public static Object createSome() {
57 List<Integer> result = new ArrayList<Integer>();
58 for (int c = 0; c < NODE_COUNT; c++) {
59 result.add(new Integer(c));
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