1 /*
 2  * Copyright (c) 2020, 2025, 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  *
28  * @summary
29  * VM Testbase keywords: [quick, jpda, jvmti, noras]
30  * VM Testbase readme:
31  * DESCRIPTION
32  *     The test exercises JVMTI function GetObjectMonitorUsage.
33  * COMMENTS
34  *     This test checks that GetObjectMonitorUsage works with inline types and always
35  *     returns information consistent with a never locked monitor
36  *
37  * @enablePreview
38  * @library  /vmTestbase
39  *           /test/lib
40  * @run driver jdk.test.lib.FileInstaller . .
41  * @run main/othervm/native -agentlib:objmonusage007 nsk.jvmti.GetObjectMonitorUsage.objmonusage007
42  */
43 package nsk.jvmti.GetObjectMonitorUsage;
44 
45 import java.io.PrintStream;
46 
47 public class objmonusage007 {
48     final static int JCK_STATUS_BASE = 95;
49     final static int NUMBER_OF_THREADS = 32;
50 
51     static {
52         try {
53             System.loadLibrary("objmonusage007");
54         } catch (UnsatisfiedLinkError err) {
55             System.err.println("Could not load objmonusage7 library");
56             System.err.println("java.library.path:"
57                 + System.getProperty("java.library.path"));
58             throw err;
59         }
60     }
61 
62     native static int getResult();
63     native static void check(Object o, Thread owner, int ec, int wc);
64 
65     static value class LocalValue {
66         int i = 0;
67     }
68 
69     public static void main(String argv[]) {
70         argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
71 
72         System.exit(run(argv, System.out) + JCK_STATUS_BASE);
73     }
74 
75     public static int run(String argv[], PrintStream out) {
76         LocalValue lv = new LocalValue();
77         objmonusage007.check(lv, null, 0, 0);
78 
79         return getResult();
80     }
81 }
82