1 /*
 2  * Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved.
 3  * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
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24  */
25 
26 /*
27  * @test default
28  * @summary Shenandoah crashes with -XX:ObjectAlignmentInBytes=16
29  * @key randomness
30  * @requires vm.gc.Shenandoah
31  * @requires vm.bits == "64"
32  * @library /test/lib
33  *
34  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -Xint                   TestLargeObjectAlignment
35  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:-TieredCompilation  TestLargeObjectAlignment
36  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=1 TestLargeObjectAlignment
37  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=4 TestLargeObjectAlignment
38  */
39 
40 /*
41  * @test generational
42  * @summary Shenandoah crashes with -XX:ObjectAlignmentInBytes=16
43  * @key randomness
44  * @requires vm.gc.Shenandoah
45  * @requires vm.bits == "64"
46  * @library /test/lib
47  *
48  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:ObjectAlignmentInBytes=16 -Xint                   TestLargeObjectAlignment
49  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:ObjectAlignmentInBytes=16 -XX:-TieredCompilation  TestLargeObjectAlignment
50  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=1 TestLargeObjectAlignment
51  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:ObjectAlignmentInBytes=16 -XX:TieredStopAtLevel=4 TestLargeObjectAlignment
52  */
53 
54 import java.util.ArrayList;
55 import java.util.List;
56 import java.util.Random;
57 import jdk.test.lib.Utils;
58 
59 public class TestLargeObjectAlignment {
60 
61     static final int SLABS_COUNT = Integer.getInteger("slabs", 10000);
62     static final int NODE_COUNT = Integer.getInteger("nodes", 10000);
63     static final long TIME_NS = 1000L * 1000L * Integer.getInteger("timeMs", 5000);
64 
65     static Object[] objects;
66 
67     public static void main(String[] args) throws Exception {
68         objects = new Object[SLABS_COUNT];
69 
70         long start = System.nanoTime();
71         Random rng = Utils.getRandomInstance();
72         while (System.nanoTime() - start < TIME_NS) {
73             objects[rng.nextInt(SLABS_COUNT)] = createSome();
74         }
75     }
76 
77     public static Object createSome() {
78         List<Integer> result = new ArrayList<Integer>();
79         for (int c = 0; c < NODE_COUNT; c++) {
80             result.add(new Integer(c));
81         }
82         return result;
83     }
84 
85 }