aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * Common helpers for TestSummarizeRSetStats* tests
aoqi@0:  */
aoqi@0: 
aoqi@0: import sun.management.ManagementFactoryHelper;
aoqi@0: import com.sun.management.HotSpotDiagnosticMXBean;
aoqi@0: import com.sun.management.VMOption;
aoqi@0: 
aoqi@0: import com.oracle.java.testlibrary.*;
aoqi@0: import java.util.regex.Matcher;
aoqi@0: import java.util.regex.Pattern;
aoqi@0: import java.lang.Thread;
aoqi@0: import java.util.ArrayList;
aoqi@0: import java.util.Arrays;
aoqi@0: 
aoqi@0: class VerifySummaryOutput {
aoqi@0:     // 4M size, both are directly allocated into the old gen
aoqi@0:     static Object[] largeObject1 = new Object[1024 * 1024];
aoqi@0:     static Object[] largeObject2 = new Object[1024 * 1024];
aoqi@0: 
aoqi@0:     static int[] temp;
aoqi@0: 
aoqi@0:     public static void main(String[] args) {
aoqi@0:         // create some cross-references between these objects
aoqi@0:         for (int i = 0; i < largeObject1.length; i++) {
aoqi@0:             largeObject1[i] = largeObject2;
aoqi@0:         }
aoqi@0: 
aoqi@0:         for (int i = 0; i < largeObject2.length; i++) {
aoqi@0:             largeObject2[i] = largeObject1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         int numGCs = Integer.parseInt(args[0]);
aoqi@0: 
aoqi@0:         if (numGCs > 0) {
aoqi@0:             // try to force a minor collection: the young gen is 4M, the
aoqi@0:             // amount of data allocated below is roughly that (4*1024*1024 +
aoqi@0:             // some header data)
aoqi@0:             for (int i = 0; i < 1024 ; i++) {
aoqi@0:                 temp = new int[1024];
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         for (int i = 0; i < numGCs - 1; i++) {
aoqi@0:             System.gc();
aoqi@0:         }
aoqi@0:     }
aoqi@0: }
aoqi@0: 
aoqi@0: public class TestSummarizeRSetStatsTools {
aoqi@0: 
aoqi@0:     // the VM is currently run using G1GC, i.e. trying to test G1 functionality.
aoqi@0:     public static boolean testingG1GC() {
aoqi@0:         HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();
aoqi@0: 
aoqi@0:         VMOption option = diagnostic.getVMOption("UseG1GC");
aoqi@0:         if (option.getValue().equals("false")) {
aoqi@0:           System.out.println("Skipping this test. It is only a G1 test.");
aoqi@0:           return false;
aoqi@0:         }
aoqi@0:         return true;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static String runTest(String[] additionalArgs, int numGCs) throws Exception {
aoqi@0:         ArrayList<String> finalargs = new ArrayList<String>();
aoqi@0:         String[] defaultArgs = new String[] {
aoqi@0:             "-XX:+UseG1GC",
aoqi@0:             "-Xmn4m",
aoqi@0:             "-Xmx20m",
aoqi@0:             "-XX:InitiatingHeapOccupancyPercent=100", // we don't want the additional GCs due to initial marking
aoqi@0:             "-XX:+PrintGC",
aoqi@0:             "-XX:+UnlockDiagnosticVMOptions",
aoqi@0:             "-XX:G1HeapRegionSize=1M",
aoqi@0:         };
aoqi@0: 
aoqi@0:         finalargs.addAll(Arrays.asList(defaultArgs));
aoqi@0: 
aoqi@0:         if (additionalArgs != null) {
aoqi@0:             finalargs.addAll(Arrays.asList(additionalArgs));
aoqi@0:         }
aoqi@0: 
aoqi@0:         finalargs.add(VerifySummaryOutput.class.getName());
aoqi@0:         finalargs.add(String.valueOf(numGCs));
aoqi@0: 
aoqi@0:         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
aoqi@0:             finalargs.toArray(new String[0]));
aoqi@0:         OutputAnalyzer output = new OutputAnalyzer(pb.start());
aoqi@0: 
aoqi@0:         output.shouldHaveExitValue(0);
aoqi@0: 
aoqi@0:         String result = output.getStdout();
aoqi@0:         return result;
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static void checkCounts(int expected, int actual, String which) throws Exception {
aoqi@0:         if (expected != actual) {
aoqi@0:             throw new Exception("RSet summaries mention " + which + " regions an incorrect number of times. Expected " + expected + ", got " + actual);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void expectPerRegionRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception {
aoqi@0:         expectRSetSummaries(result, expectedCumulative, expectedPeriodic);
aoqi@0:         int actualYoung = result.split("Young regions").length - 1;
aoqi@0:         int actualHumonguous = result.split("Humonguous regions").length - 1;
aoqi@0:         int actualFree = result.split("Free regions").length - 1;
aoqi@0:         int actualOther = result.split("Old regions").length - 1;
aoqi@0: 
aoqi@0:         // the strings we check for above are printed four times per summary
aoqi@0:         int expectedPerRegionTypeInfo = (expectedCumulative + expectedPeriodic) * 4;
aoqi@0: 
aoqi@0:         checkCounts(expectedPerRegionTypeInfo, actualYoung, "Young");
aoqi@0:         checkCounts(expectedPerRegionTypeInfo, actualHumonguous, "Humonguous");
aoqi@0:         checkCounts(expectedPerRegionTypeInfo, actualFree, "Free");
aoqi@0:         checkCounts(expectedPerRegionTypeInfo, actualOther, "Old");
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void expectRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception {
aoqi@0:         int actualTotal = result.split("concurrent refinement").length - 1;
aoqi@0:         int actualCumulative = result.split("Cumulative RS summary").length - 1;
aoqi@0: 
aoqi@0:         if (expectedCumulative != actualCumulative) {
aoqi@0:             throw new Exception("Incorrect amount of RSet summaries at the end. Expected " + expectedCumulative + ", got " + actualCumulative);
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (expectedPeriodic != (actualTotal - actualCumulative)) {
aoqi@0:             throw new Exception("Incorrect amount of per-period RSet summaries at the end. Expected " + expectedPeriodic + ", got " + (actualTotal - actualCumulative));
aoqi@0:         }
aoqi@0:     }
aoqi@0: }
aoqi@0: