1 /*
 2  * Copyright (c) 2019, 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
22  * questions.
23  *
24  */
25 
26 /*
27  * @test
28  * @summary Test heap dump triggered heap object iteration
29  * @bug 8225014
30  * @requires vm.gc.Shenandoah
31  * @library /test/lib
32  * @run driver TestObjItrWithHeapDump
33  */
34 
35 import java.util.*;
36 
37 import jdk.test.lib.process.ProcessTools;
38 import jdk.test.lib.process.OutputAnalyzer;
39 
40 public class TestObjItrWithHeapDump {
41     public static void testWith(String... args) throws Exception {
42         String[] cmds = Arrays.copyOf(args, args.length + 2);
43         cmds[args.length] = TestObjItrWithHeapDump.class.getName();
44         cmds[args.length + 1] = "test";
45         OutputAnalyzer output = ProcessTools.executeLimitedTestJava(cmds);
46 
47         output.shouldHaveExitValue(0);
48         output.shouldContain("Class Histogram (before full gc)");
49         output.shouldContain("Class Histogram (after full gc)");
50     }
51 
52     public static void main(String[] args) throws Exception {
53         if (args.length > 0 && args[0].equals("test")) {
54             System.gc();
55             System.exit(0);
56         }
57 
58         String[][][] modeHeuristics = new String[][][] {
59              {{"satb"},         {"adaptive", "compact", "static", "aggressive"}},
60              {{"generational"}, {"adaptive"}},
61              {{"iu"},           {"adaptive", "aggressive"}},
62              {{"passive"},      {"passive"}}
63         };
64 
65         for (String[][] mh : modeHeuristics) {
66             String mode = mh[0][0];
67             String[] heuristics = mh[1];
68             for (String h : heuristics) {
69                 testWith("-XX:+UnlockDiagnosticVMOptions",
70                          "-XX:+UnlockExperimentalVMOptions",
71                          "-XX:+UseShenandoahGC",
72                          "-XX:-ShenandoahDegeneratedGC",
73                          "-XX:ShenandoahGCMode=" + mode,
74                          "-XX:ShenandoahGCHeuristics=" + h,
75                          "-Xlog:gc+classhisto=trace",
76                          "-XX:-ExplicitGCInvokesConcurrent",
77                          "-Xmx512M"
78                 );
79             }
80         }
81     }
82 }