| /* |
| * Copyright (c) 2016, 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. |
| */ |
| package gc.g1.ihop.lib; |
| |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| |
| /** |
| * Utility class to extract IHOP related information from the GC log. |
| * The class provides a number of static method to be used from tests. |
| */ |
| public class IhopUtils { |
| |
| // Examples of GC log for IHOP: |
| // [0.402s][debug][gc,ergo,ihop] GC(9) Do not request concurrent cycle initiation (still doing mixed collections) occupancy: 66060288B allocation request: 0B threshold: 59230757B (88.26) source: end of GC |
| // [0.466s][debug][gc,ergo,ihop] GC(18) Request concurrent cycle initiation (occupancy higher than threshold) occupancy: 52428800B allocation request: 0B threshold: 0B (0.00) source: end of GC |
| |
| /** |
| * Patterns are used for extracting occupancy and threshold from GC log. |
| */ |
| private final static Pattern OCCUPANCY = Pattern.compile("occupancy: (\\d+)B"); |
| private final static Pattern THRESHOLD = Pattern.compile("threshold: (\\d+)B"); |
| |
| /** |
| * Messages related to concurrent cycle initiation. |
| */ |
| private final static String CYCLE_INITIATION_MESSAGE = "Request concurrent cycle initiation (occupancy higher than threshold)"; |
| private final static String CYCLE_INITIATION_MESSAGE_FALSE = "Do not request concurrent cycle initiation (still doing mixed collections)"; |
| private final static String ADAPTIVE_IHOP_PREDICTION_ACTIVE_MESSAGE = "prediction active: true"; |
| |
| /** |
| * Finds strings which contains patterns for finding. |
| * |
| * @param outputAnalyzer List of string for IHOP messages extraction |
| * @param stringsToFind Strings which is checked for matching with OutputAnalyzer content |
| * @return List of strings which were matched. |
| */ |
| private static List<String> findInLog(OutputAnalyzer outputAnalyzer, String... stringsToFind) { |
| return outputAnalyzer.asLines().stream() |
| .filter(string -> { |
| return Stream.of(stringsToFind) |
| .filter(find -> string.contains(find)) |
| .findAny() |
| .isPresent(); |
| }) |
| .collect(Collectors.toList()); |
| } |
| |
| /** |
| * Checks that memory occupancy is greater or equal to the threshold. |
| * This methods searches for occupancy and threshold in the GC log corresponding Conc Mark Cycle initiation |
| * and compare their values.If no CMC initiation happens, does nothing. |
| * @param outputAnalyzer OutputAnalyzer which contains GC log to be checked |
| * @throw RuntimeException If check fails |
| */ |
| public static void checkIhopLogValues(OutputAnalyzer outputAnalyzer) { |
| // Concurrent cycle was initiated but was not expected. |
| // Checks occupancy should be greater than threshold. |
| List<String> logItems = IhopUtils.getErgoMessages(outputAnalyzer); |
| logItems.stream() |
| .forEach(item -> { |
| long occupancy = IhopUtils.getLongByPattern(item, IhopUtils.OCCUPANCY); |
| long threshold = IhopUtils.getLongByPattern(item, IhopUtils.THRESHOLD); |
| if (occupancy < threshold) { |
| System.out.println(outputAnalyzer.getOutput()); |
| throw new RuntimeException("Concurrent cycle initiation is unexpected. Occupancy (" + occupancy + ") is less then threshold (" + threshold + ")"); |
| } |
| System.out.printf("Concurrent cycle was initiated with occupancy = %d and threshold = %d%n", occupancy, threshold); |
| }); |
| } |
| |
| private static Long getLongByPattern(String line, Pattern pattern) { |
| Matcher number = pattern.matcher(line); |
| if (number.find()) { |
| return Long.parseLong(number.group(1)); |
| } |
| System.out.println(line); |
| throw new RuntimeException("Cannot find Long in string."); |
| } |
| |
| /** |
| * Finds concurrent cycle initiation messages. |
| * @param outputAnalyzer OutputAnalyzer |
| * @return List with messages which were found. |
| */ |
| public static List<String> getErgoInitiationMessages(OutputAnalyzer outputAnalyzer) { |
| return IhopUtils.findInLog(outputAnalyzer, CYCLE_INITIATION_MESSAGE); |
| } |
| |
| /** |
| * Gets IHOP ergo messages from GC log. |
| * @param outputAnalyzer |
| * @return List with found messages |
| */ |
| private static List<String> getErgoMessages(OutputAnalyzer outputAnalyzer) { |
| return IhopUtils.findInLog(outputAnalyzer, CYCLE_INITIATION_MESSAGE, CYCLE_INITIATION_MESSAGE_FALSE); |
| } |
| |
| /** |
| * Checks that GC log contains expected ergonomic messages |
| * @param outputAnalyzer OutputAnalyer with GC log for checking |
| * @throws RuntimeException If no IHOP ergo messages were not found |
| */ |
| public static void checkErgoMessagesExist(OutputAnalyzer outputAnalyzer) { |
| String output = outputAnalyzer.getOutput(); |
| if (!(output.contains(CYCLE_INITIATION_MESSAGE) | output.contains(CYCLE_INITIATION_MESSAGE_FALSE))) { |
| throw new RuntimeException("Cannot find expected IHOP ergonomics messages"); |
| } |
| } |
| |
| /** |
| * Checks that adaptive IHOP was activated |
| * @param outputAnalyzer OutputAnalyer with GC log for checking |
| * @throws RuntimeException If IHOP message was not found. |
| */ |
| public static void checkAdaptiveIHOPWasActivated(OutputAnalyzer outputAnalyzer) { |
| outputAnalyzer.shouldContain(ADAPTIVE_IHOP_PREDICTION_ACTIVE_MESSAGE); |
| } |
| } |