author | kbarrett |
Mon, 08 Jul 2019 17:24:21 -0400 | |
changeset 55610 | 47fdb5b0fa41 |
parent 53523 | 4c5184c56dc2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2019, 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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* @key gc |
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* @bug 8047976 |
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* @requires vm.gc.G1 |
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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 main gc.arguments.TestG1ConcRefinementThreads |
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*/ |
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import jdk.test.lib.process.OutputAnalyzer; |
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import jdk.test.lib.process.ProcessTools; |
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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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ProcessBuilder pb = GCArguments.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()])); |
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OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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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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} |