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annotate test/gc/arguments/TestG1ConcRefinementThreads.java @ 21468:99942eac9c6d

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Introducing TruffleVM - a central place to invoke code in any registered TruffleLanguage.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 22 May 2015 13:41:10 +0200
parents 8ba0078861d4
children
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test TestG1ConcRefinementThreads
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26 * @key gc
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27 * @bug 8047976
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28 * @summary Tests argument processing for G1ConcRefinementThreads
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29 * @library /testlibrary
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30 */
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31
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32 import com.oracle.java.testlibrary.*;
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33 import java.util.*;
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34 import java.util.regex.*;
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35
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36 public class TestG1ConcRefinementThreads {
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37
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38 static final int AUTO_SELECT_THREADS_COUNT = 0;
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39 static final int PASSED_THREADS_COUNT = 11;
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40
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41 public static void main(String args[]) throws Exception {
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42 // default case
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43 runG1ConcRefinementThreadsTest(
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44 new String[]{}, // automatically selected
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45 AUTO_SELECT_THREADS_COUNT /* use default setting */);
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46
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47 // zero setting case
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48 runG1ConcRefinementThreadsTest(
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49 new String[]{"-XX:G1ConcRefinementThreads=0"}, // automatically selected
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50 AUTO_SELECT_THREADS_COUNT /* set to zero */);
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51
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52 // non-zero sestting case
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53 runG1ConcRefinementThreadsTest(
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54 new String[]{"-XX:G1ConcRefinementThreads="+Integer.toString(PASSED_THREADS_COUNT)},
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55 PASSED_THREADS_COUNT);
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56 }
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57
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58 private static void runG1ConcRefinementThreadsTest(String[] passedOpts,
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59 int expectedValue) throws Exception {
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60 List<String> vmOpts = new ArrayList<>();
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61 if (passedOpts.length > 0) {
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62 Collections.addAll(vmOpts, passedOpts);
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63 }
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64 Collections.addAll(vmOpts, "-XX:+UseG1GC", "-XX:+PrintFlagsFinal", "-version");
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65
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66 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
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67 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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68
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69 output.shouldHaveExitValue(0);
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70 String stdout = output.getStdout();
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71 checkG1ConcRefinementThreadsConsistency(stdout, expectedValue);
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72 }
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73
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74 private static void checkG1ConcRefinementThreadsConsistency(String output, int expectedValue) {
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75 int actualValue = getIntValue("G1ConcRefinementThreads", output);
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76
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77 if (expectedValue == 0) {
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78 // If expectedValue is automatically selected, set it same as ParallelGCThreads.
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79 expectedValue = getIntValue("ParallelGCThreads", output);
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80 }
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81
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82 if (expectedValue != actualValue) {
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83 throw new RuntimeException(
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84 "Actual G1ConcRefinementThreads(" + Integer.toString(actualValue)
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85 + ") is not equal to expected value(" + Integer.toString(expectedValue) + ")");
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86 }
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87 }
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88
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89 public static int getIntValue(String flag, String where) {
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90 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
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91 if (!m.find()) {
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92 throw new RuntimeException("Could not find value for flag " + flag + " in output string");
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93 }
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94 String match = m.group();
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95 return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
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96 }
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97 }