TestRemsetLoggingThreads.java revision 11833:1cbffa2beba6 
1/*
2 * Copyright (c) 2013, 2016, 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 TestRemsetLoggingThreads
26 * @requires vm.gc.G1
27 * @bug 8025441 8145534
28 * @key gc
29 * @library /test/lib
30 * @modules java.base/jdk.internal.misc
31 *          java.management/sun.management
32 * @summary Ensure that various values of worker threads/concurrent
33 * refinement threads do not crash the VM.
34 */
35
36import java.util.regex.Matcher;
37import java.util.regex.Pattern;
38
39import jdk.test.lib.process.OutputAnalyzer;
40import jdk.test.lib.process.ProcessTools;
41
42public class TestRemsetLoggingThreads {
43
44  private static void runTest(int refinementThreads, int workerThreads) throws Exception {
45    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
46                                                              "-XX:+UnlockDiagnosticVMOptions",
47                                                              "-Xlog:gc+remset+exit=trace",
48                                                              "-XX:G1ConcRefinementThreads=" + refinementThreads,
49                                                              "-XX:ParallelGCThreads=" + workerThreads,
50                                                              "-version");
51
52    OutputAnalyzer output = new OutputAnalyzer(pb.start());
53
54    // a zero in refinement thread numbers indicates that the value in ParallelGCThreads should be used.
55    // Additionally use at least one thread.
56    int expectedNumRefinementThreads = refinementThreads;
57
58    String pattern = "Concurrent RS threads times \\(s\\)$";
59    Matcher m = Pattern.compile(pattern, Pattern.MULTILINE).matcher(output.getStdout());
60
61    if (!m.find()) {
62      throw new Exception("Could not find correct output for concurrent RS threads times in stdout," +
63        " should match the pattern \"" + pattern + "\", but stdout is \n" + output.getStdout());
64    }
65    output.shouldHaveExitValue(0);
66  }
67
68  public static void main(String[] args) throws Exception {
69    // different valid combinations of number of refinement and gc worker threads
70    runTest(1, 1);
71    runTest(1, 5);
72    runTest(5, 1);
73    runTest(10, 10);
74    runTest(1, 2);
75    runTest(4, 3);
76  }
77}
78