1 /*
2  * Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 
25 /*
26  * @test
27  * @key stress
28  *
29  * @summary converted from VM Testbase gc/memory/UniThread/Circular1.
30  * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent]
31  *
32  * @library /vmTestbase
33  *          /test/lib
34  * @run main/othervm gc.memory.UniThread.Circular1.Circular1 -iterations 5
35  */
36 
37 package gc.memory.UniThread.Circular1;
38 
39 import nsk.share.gc.*;
40 import nsk.share.test.Stresser;
41 
42 /**
43  * Test GC collection of circular linked lists.
44  *
45  * This test simply creates a series of circulary
46  * linked memory objects which should be able to be
47  * GC'd.
48  *
49  * In this test the size of one object is small, the number
50  * of objects in one list is small and the number
51  * of lists is large.
52  */
53 public class Circular1 extends GCTestBase {
54         private int arraySize;
55         private int objectSize;
56         private int circularitySize;
57         private MemoryObject memoryArray[];
58 
Circular1()59         public Circular1() {
60                 this(100, 5);
61         }
62 
Circular1(int objectSize, int circularitySize)63         public Circular1(int objectSize, int circularitySize) {
64                 this.objectSize = objectSize;
65                 this.circularitySize = circularitySize;
66         }
67 
run()68         public void run() {
69                 arraySize = Memory.getArrayLength(runParams.getTestMemory(), Memory.getListSize(circularitySize, objectSize));
70                 Stresser stresser = new Stresser(runParams.getStressOptions());
71                 log.debug("Array size: " + arraySize);
72                 memoryArray = new MemoryObject[arraySize];
73                 stresser.start(runParams.getIterations());
74                 try {
75                         while (stresser.iteration()) {
76                                 log.debug(Runtime.getRuntime().freeMemory());
77                                 for (int i = 0; i < arraySize && stresser.continueExecution(); i ++)
78                                         memoryArray[i] = Memory.makeCircularList(circularitySize, objectSize);
79                         }
80                 } finally {
81                         stresser.finish();
82                 }
83                 System.out.println("Test passed.");
84         }
85 
main(String args[])86         public static void main(String args[]) {
87                 GC.runTest(new Circular1(), args);
88         }
89 }
90