1 /*
 2  * Copyright (c) 2015, 2021, 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  * @test
26  * @bug 8133885
27  * @summary monitorinflation=trace should have logging from each of the statements in the code
28  * @requires vm.flagless
29  * @library /test/lib
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  * @run driver MonitorInflationTest
33  */
34 
35 import jdk.test.lib.process.OutputAnalyzer;
36 import jdk.test.lib.process.ProcessTools;
37 
38 public class MonitorInflationTest {
39     static void analyzeOutputOn(ProcessBuilder pb) throws Exception {
40         OutputAnalyzer output = new OutputAnalyzer(pb.start());
41         output.shouldContain("inflate(locked):");
42         output.shouldContain("type='MonitorInflationTest$Waiter'");
43         output.shouldContain("I've been waiting.");
44         output.shouldHaveExitValue(0);
45     }
46 
47     static void analyzeOutputOff(ProcessBuilder pb) throws Exception {
48         OutputAnalyzer output = new OutputAnalyzer(pb.start());
49         output.shouldNotContain("[monitorinflation]");
50         output.shouldHaveExitValue(0);
51     }
52 
53     public static void main(String[] args) throws Exception {
54         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:monitorinflation=trace",
55                                                                   InnerClass.class.getName());
56         analyzeOutputOn(pb);
57 
58         pb = ProcessTools.createJavaProcessBuilder("-Xlog:monitorinflation=off",
59                                                    InnerClass.class.getName());
60         analyzeOutputOff(pb);
61     }
62 
63     public static class Waiter {
64         public static void foo() {
65             System.out.println("I've been waiting.");
66         }
67     }
68     public static class InnerClass {
69         public static void main(String[] args) throws Exception {
70             Waiter w = new Waiter();
71             synchronized (w) {
72                 w.wait(100);
73                 w.foo();
74             }
75         }
76     }
77 }