Mercurial > hg > graal-compiler
view test/gc/g1/TestSummarizeRSetStats.java @ 11247:4172b595e374
more CRC32 intrinsification tests
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 07 Aug 2013 16:35:47 +0200 |
parents | e72f7eecc96d |
children | c319b188c7b2 |
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/* * 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 * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test TestSummarizeRSetStats.java * @bug 8013895 * @library /testlibrary * @build TestSummarizeRSetStats * @summary Verify output of -XX:+G1SummarizeRSetStats * @run main TestSummarizeRSetStats * * Test the output of G1SummarizeRSetStats in conjunction with G1SummarizeRSetStatsPeriod. */ import com.oracle.java.testlibrary.*; import java.lang.Thread; import java.util.ArrayList; import java.util.Arrays; class RunSystemGCs { // 4M size, both are directly allocated into the old gen static Object[] largeObject1 = new Object[1024 * 1024]; static Object[] largeObject2 = new Object[1024 * 1024]; static int[] temp; public static void main(String[] args) { // create some cross-references between these objects for (int i = 0; i < largeObject1.length; i++) { largeObject1[i] = largeObject2; } for (int i = 0; i < largeObject2.length; i++) { largeObject2[i] = largeObject1; } int numGCs = Integer.parseInt(args[0]); if (numGCs > 0) { // try to force a minor collection: the young gen is 4M, the // amount of data allocated below is roughly that (4*1024*1024 + // some header data) for (int i = 0; i < 1024 ; i++) { temp = new int[1024]; } } for (int i = 0; i < numGCs - 1; i++) { System.gc(); } } } public class TestSummarizeRSetStats { public static String runTest(String[] additionalArgs, int numGCs) throws Exception { ArrayList<String> finalargs = new ArrayList<String>(); String[] defaultArgs = new String[] { "-XX:+UseG1GC", "-Xmn4m", "-Xmx20m", "-XX:InitiatingHeapOccupancyPercent=100", // we don't want the additional GCs due to initial marking "-XX:+PrintGC", "-XX:+UnlockDiagnosticVMOptions", "-XX:G1HeapRegionSize=1M", }; finalargs.addAll(Arrays.asList(defaultArgs)); if (additionalArgs != null) { finalargs.addAll(Arrays.asList(additionalArgs)); } finalargs.add(RunSystemGCs.class.getName()); finalargs.add(String.valueOf(numGCs)); ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( finalargs.toArray(new String[0])); OutputAnalyzer output = new OutputAnalyzer(pb.start()); output.shouldHaveExitValue(0); String result = output.getStdout(); return result; } private static void expectStatistics(String result, int expectedCumulative, int expectedPeriodic) throws Exception { int actualTotal = result.split("Concurrent RS processed").length - 1; int actualCumulative = result.split("Cumulative RS summary").length - 1; if (expectedCumulative != actualCumulative) { throw new Exception("Incorrect amount of RSet summaries at the end. Expected " + expectedCumulative + ", got " + actualCumulative); } if (expectedPeriodic != (actualTotal - actualCumulative)) { throw new Exception("Incorrect amount of per-period RSet summaries at the end. Expected " + expectedPeriodic + ", got " + (actualTotal - actualCumulative)); } } public static void main(String[] args) throws Exception { String result; // no RSet statistics output result = runTest(null, 0); expectStatistics(result, 0, 0); // no RSet statistics output result = runTest(null, 2); expectStatistics(result, 0, 0); // no RSet statistics output result = runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3); expectStatistics(result, 0, 0); // single RSet statistics output at the end result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 0); expectStatistics(result, 1, 0); // single RSet statistics output at the end result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 2); expectStatistics(result, 1, 0); // single RSet statistics output result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0); expectStatistics(result, 1, 0); // two times RSet statistics output result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1); expectStatistics(result, 1, 1); // four times RSet statistics output result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3); expectStatistics(result, 1, 3); // three times RSet statistics output result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3); expectStatistics(result, 1, 2); // single RSet statistics output result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3); expectStatistics(result, 1, 1); } }