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