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test/gc/g1/TestSummarizeRSetStatsThreads.java

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rev 7187 : [mq]: 8060116


  36 import com.oracle.java.testlibrary.ProcessTools;
  37 import com.oracle.java.testlibrary.OutputAnalyzer;
  38 
  39 public class TestSummarizeRSetStatsThreads {
  40 
  41   private static void runTest(int refinementThreads, int workerThreads) throws Exception {
  42     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
  43                                                               "-XX:+UnlockDiagnosticVMOptions",
  44                                                               "-XX:+G1SummarizeRSetStats",
  45                                                               "-XX:G1ConcRefinementThreads=" + refinementThreads,
  46                                                               "-XX:ParallelGCThreads=" + workerThreads,
  47                                                               "-version");
  48 
  49     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  50 
  51     // check output to contain the string "Concurrent RS threads times (s)" followed by
  52     // the correct number of values in the next line.
  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 == 0 ? workerThreads : refinementThreads;
  57     expectedNumRefinementThreads = Math.max(1, expectedNumRefinementThreads);
  58     // create the pattern made up of n copies of a floating point number pattern
  59     String numberPattern = String.format("%0" + expectedNumRefinementThreads + "d", 0)
  60       .replace("0", "\\s+\\d+\\.\\d+");
  61     String pattern = "Concurrent RS threads times \\(s\\)$" + numberPattern + "$";
  62     Matcher m = Pattern.compile(pattern, Pattern.MULTILINE).matcher(output.getStdout());
  63 
  64     if (!m.find()) {
  65       throw new Exception("Could not find correct output for concurrent RS threads times in stdout," +
  66         " should match the pattern \"" + pattern + "\", but stdout is \n" + output.getStdout());
  67     }
  68     output.shouldHaveExitValue(0);
  69   }
  70 
  71   public static void main(String[] args) throws Exception {
  72     if (!TestSummarizeRSetStatsTools.testingG1GC()) {
  73       return;
  74     }
  75     // different valid combinations of number of refinement and gc worker threads
  76     runTest(0, 0);
  77     runTest(0, 5);
  78     runTest(5, 0);
  79     runTest(10, 10);
  80     runTest(1, 2);
  81     runTest(4, 3);
  82   }
  83 }


  36 import com.oracle.java.testlibrary.ProcessTools;
  37 import com.oracle.java.testlibrary.OutputAnalyzer;
  38 
  39 public class TestSummarizeRSetStatsThreads {
  40 
  41   private static void runTest(int refinementThreads, int workerThreads) throws Exception {
  42     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
  43                                                               "-XX:+UnlockDiagnosticVMOptions",
  44                                                               "-XX:+G1SummarizeRSetStats",
  45                                                               "-XX:G1ConcRefinementThreads=" + refinementThreads,
  46                                                               "-XX:ParallelGCThreads=" + workerThreads,
  47                                                               "-version");
  48 
  49     OutputAnalyzer output = new OutputAnalyzer(pb.start());
  50 
  51     // check output to contain the string "Concurrent RS threads times (s)" followed by
  52     // the correct number of values in the next line.
  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     // create the pattern made up of n copies of a floating point number pattern
  59     String numberPattern = String.format("%0" + expectedNumRefinementThreads + "d", 0)
  60       .replace("0", "\\s+\\d+\\.\\d+");
  61     String pattern = "Concurrent RS threads times \\(s\\)$" + numberPattern + "$";
  62     Matcher m = Pattern.compile(pattern, Pattern.MULTILINE).matcher(output.getStdout());
  63 
  64     if (!m.find()) {
  65       throw new Exception("Could not find correct output for concurrent RS threads times in stdout," +
  66         " should match the pattern \"" + pattern + "\", but stdout is \n" + output.getStdout());
  67     }
  68     output.shouldHaveExitValue(0);
  69   }
  70 
  71   public static void main(String[] args) throws Exception {
  72     if (!TestSummarizeRSetStatsTools.testingG1GC()) {
  73       return;
  74     }
  75     // different valid combinations of number of refinement and gc worker threads
  76     runTest(1, 1);
  77     runTest(1, 5);
  78     runTest(5, 1);
  79     runTest(10, 10);
  80     runTest(1, 2);
  81     runTest(4, 3);
  82   }
  83 }
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