| /* |
| * 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. |
| */ |
| |
| /* |
| * Common helpers for TestSummarizeRSetStats* tests |
| */ |
| |
| import sun.management.ManagementFactoryHelper; |
| import com.sun.management.HotSpotDiagnosticMXBean; |
| import com.sun.management.VMOption; |
| |
| import com.oracle.java.testlibrary.*; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import java.lang.Thread; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| |
| class VerifySummaryOutput { |
| // 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 TestSummarizeRSetStatsTools { |
| |
| // the VM is currently run using G1GC, i.e. trying to test G1 functionality. |
| public static boolean testingG1GC() { |
| HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean(); |
| |
| VMOption option = diagnostic.getVMOption("UseG1GC"); |
| if (option.getValue().equals("false")) { |
| System.out.println("Skipping this test. It is only a G1 test."); |
| return false; |
| } |
| return true; |
| } |
| |
| 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(VerifySummaryOutput.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 checkCounts(int expected, int actual, String which) throws Exception { |
| if (expected != actual) { |
| throw new Exception("RSet summaries mention " + which + " regions an incorrect number of times. Expected " + expected + ", got " + actual); |
| } |
| } |
| |
| public static void expectPerRegionRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception { |
| expectRSetSummaries(result, expectedCumulative, expectedPeriodic); |
| int actualYoung = result.split("Young regions").length - 1; |
| int actualHumonguous = result.split("Humonguous regions").length - 1; |
| int actualFree = result.split("Free regions").length - 1; |
| int actualOther = result.split("Old regions").length - 1; |
| |
| // the strings we check for above are printed four times per summary |
| int expectedPerRegionTypeInfo = (expectedCumulative + expectedPeriodic) * 4; |
| |
| checkCounts(expectedPerRegionTypeInfo, actualYoung, "Young"); |
| checkCounts(expectedPerRegionTypeInfo, actualHumonguous, "Humonguous"); |
| checkCounts(expectedPerRegionTypeInfo, actualFree, "Free"); |
| checkCounts(expectedPerRegionTypeInfo, actualOther, "Old"); |
| } |
| |
| public static void expectRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception { |
| int actualTotal = result.split("concurrent refinement").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)); |
| } |
| } |
| } |
| |