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