103 lines
3.7 KiB
Java
103 lines
3.7 KiB
Java
/*
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* Copyright (c) 2014, 2023, 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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package gc.arguments;
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/*
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* @test TestG1ConcRefinementThreads
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* @bug 8047976
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* @requires vm.gc.G1 & vm.opt.G1ConcRefinementThreads == null
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* @summary Tests argument processing for G1ConcRefinementThreads
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* @library /test/lib
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* @library /
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* @modules java.base/jdk.internal.misc
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* java.management
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* @run driver gc.arguments.TestG1ConcRefinementThreads
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import java.util.*;
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import java.util.regex.*;
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public class TestG1ConcRefinementThreads {
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static final int AUTO_SELECT_THREADS_COUNT = -1;
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static final int PASSED_THREADS_COUNT = 11;
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public static void main(String args[]) throws Exception {
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// default case
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runG1ConcRefinementThreadsTest(
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new String[]{}, // automatically selected
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AUTO_SELECT_THREADS_COUNT /* use default setting */);
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// zero setting case
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runG1ConcRefinementThreadsTest(
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new String[]{"-XX:G1ConcRefinementThreads=0"},
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0);
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// non-zero sestting case
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runG1ConcRefinementThreadsTest(
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new String[]{"-XX:G1ConcRefinementThreads="+Integer.toString(PASSED_THREADS_COUNT)},
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PASSED_THREADS_COUNT);
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}
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private static void runG1ConcRefinementThreadsTest(String[] passedOpts,
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int expectedValue) throws Exception {
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List<String> vmOpts = new ArrayList<>();
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if (passedOpts.length > 0) {
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Collections.addAll(vmOpts, passedOpts);
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}
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Collections.addAll(vmOpts, "-XX:+UseG1GC", "-XX:+PrintFlagsFinal", "-version");
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OutputAnalyzer output = GCArguments.executeTestJava(vmOpts);
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output.shouldHaveExitValue(0);
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String stdout = output.getStdout();
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checkG1ConcRefinementThreadsConsistency(stdout, expectedValue);
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}
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private static void checkG1ConcRefinementThreadsConsistency(String output, int expectedValue) {
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int actualValue = getIntValue("G1ConcRefinementThreads", output);
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if (expectedValue == AUTO_SELECT_THREADS_COUNT) {
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// If expectedValue is automatically selected, set it same as ParallelGCThreads.
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expectedValue = getIntValue("ParallelGCThreads", output);
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}
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if (expectedValue != actualValue) {
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throw new RuntimeException(
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"Actual G1ConcRefinementThreads(" + Integer.toString(actualValue)
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+ ") is not equal to expected value(" + Integer.toString(expectedValue) + ")");
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}
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}
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public static int getIntValue(String flag, String where) {
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Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
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if (!m.find()) {
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throw new RuntimeException("Could not find value for flag " + flag + " in output string");
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}
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String match = m.group();
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return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length()));
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}
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}
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