| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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| */ |
| |
| /* |
| * @test TestSummarizeRSetStatsThreads |
| * @bug 8025441 |
| * @summary Ensure that various values of worker threads/concurrent |
| * refinement threads do not crash the VM. |
| * @key gc |
| * @library /testlibrary |
| */ |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import com.oracle.java.testlibrary.ProcessTools; |
| import com.oracle.java.testlibrary.OutputAnalyzer; |
| |
| public class TestSummarizeRSetStatsThreads { |
| |
| private static void runTest(int refinementThreads, int workerThreads) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:+G1SummarizeRSetStats", |
| "-XX:G1ConcRefinementThreads=" + refinementThreads, |
| "-XX:ParallelGCThreads=" + workerThreads, |
| "-version"); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| |
| // check output to contain the string "Concurrent RS threads times (s)" followed by |
| // the correct number of values in the next line. |
| |
| // a zero in refinement thread numbers indicates that the value in ParallelGCThreads should be used. |
| // Additionally use at least one thread. |
| int expectedNumRefinementThreads = refinementThreads; |
| |
| // create the pattern made up of n copies of a floating point number pattern |
| String numberPattern = String.format("%0" + expectedNumRefinementThreads + "d", 0) |
| .replace("0", "\\s+\\d+\\.\\d+"); |
| String pattern = "Concurrent RS threads times \\(s\\)$" + numberPattern + "$"; |
| Matcher m = Pattern.compile(pattern, Pattern.MULTILINE).matcher(output.getStdout()); |
| |
| if (!m.find()) { |
| throw new Exception("Could not find correct output for concurrent RS threads times in stdout," + |
| " should match the pattern \"" + pattern + "\", but stdout is \n" + output.getStdout()); |
| } |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (!TestSummarizeRSetStatsTools.testingG1GC()) { |
| return; |
| } |
| // different valid combinations of number of refinement and gc worker threads |
| runTest(1, 1); |
| runTest(1, 5); |
| runTest(5, 1); |
| runTest(10, 10); |
| runTest(1, 2); |
| runTest(4, 3); |
| } |
| } |