| /* |
| * 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.plab.lib; |
| |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Scanner; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import java.util.stream.Collectors; |
| |
| /** |
| * LogParser class parses VM output to get PLAB and ConsumptionStats values. |
| * |
| * Typical GC log with PLAB statistics (options - -Xlog:gc=debug,gc+plab=debug) looks like: |
| * |
| * [0.330s][debug][gc,plab ] GC(0) Young PLAB allocation: allocated: 1825632B, wasted: 29424B, unused: 2320B, used: 1793888B, undo waste: 0B, |
| * [0.330s][debug][gc,plab ] GC(0) Young other allocation: region end waste: 0B, regions filled: 2, direct allocated: 271520B, failure used: 0B, failure wasted: 0B |
| * [0.330s][debug][gc,plab ] GC(0) Young sizing: calculated: 358776B, actual: 358776B |
| * [0.330s][debug][gc,plab ] GC(0) Old PLAB allocation: allocated: 427248B, wasted: 592B, unused: 368584B, used: 58072B, undo waste: 0B, |
| * [0.330s][debug][gc,plab ] GC(0) Old other allocation: region end waste: 0B, regions filled: 1, direct allocated: 41704B, failure used: 0B, failure wasted: 0B |
| * [0.330s][debug][gc,plab ] GC(0) Old sizing: calculated: 11608B, actual: 11608B |
| */ |
| final public class LogParser { |
| |
| /** |
| * Type of parsed log element. |
| */ |
| public static enum ReportType { |
| SURVIVOR_STATS, |
| OLD_STATS |
| } |
| |
| private final String log; |
| |
| // Contains Map of PLAB statistics for given log. |
| private final PlabReport report; |
| |
| // GC ID |
| private static final Pattern GC_ID_PATTERN = Pattern.compile("\\[gc,plab\\s*\\] GC\\((\\d+)\\)"); |
| // Pattern for extraction pair <name>: <numeric value> |
| private static final Pattern PAIRS_PATTERN = Pattern.compile("\\w* \\w+:\\s+\\d+"); |
| |
| /** |
| * Construct LogParser object, parse log file with PLAB statistics and store it into report. |
| * |
| * @param log - VM Output |
| */ |
| public LogParser(String log) { |
| if (log == null) { |
| throw new IllegalArgumentException("Parameter log should not be null."); |
| } |
| this.log = log; |
| report = parseLines(); |
| } |
| |
| /** |
| * @return log which was processed |
| */ |
| public String getLog() { |
| return log; |
| } |
| |
| /** |
| * Returns the GC log entries for Survivor and Old stats. |
| * The entries are represented as a map of gcID to the StatMap. |
| * |
| * @return The log entries for the Survivor and Old stats. |
| */ |
| public PlabReport getEntries() { |
| return report; |
| } |
| |
| private PlabReport parseLines() throws NumberFormatException { |
| Scanner lineScanner = new Scanner(log); |
| PlabReport plabReport = new PlabReport(); |
| Optional<Long> gc_id; |
| while (lineScanner.hasNextLine()) { |
| String line = lineScanner.nextLine(); |
| gc_id = getGcId(line, GC_ID_PATTERN); |
| if (gc_id.isPresent()) { |
| Matcher matcher = PAIRS_PATTERN.matcher(line); |
| if (matcher.find()) { |
| if (!plabReport.containsKey(gc_id.get())) { |
| plabReport.put(gc_id.get(), new PlabGCStatistics()); |
| } |
| ReportType reportType = line.contains("Young") ? ReportType.SURVIVOR_STATS : ReportType.OLD_STATS; |
| |
| PlabGCStatistics gcStat = plabReport.get(gc_id.get()); |
| if (!gcStat.containsKey(reportType)) { |
| gcStat.put(reportType, new PlabInfo()); |
| } |
| |
| // Extract all pairs from log. |
| PlabInfo plabInfo = gcStat.get(reportType); |
| do { |
| String pair = matcher.group(); |
| String[] nameValue = pair.replaceAll(": ", ":").split(":"); |
| plabInfo.put(nameValue[0].trim(), Long.parseLong(nameValue[1])); |
| } while (matcher.find()); |
| } |
| } |
| } |
| return plabReport; |
| } |
| |
| private static Optional<Long> getGcId(String line, Pattern pattern) { |
| Matcher number = pattern.matcher(line); |
| if (number.find()) { |
| return Optional.of(Long.parseLong(number.group(1))); |
| } |
| return Optional.empty(); |
| } |
| |
| /** |
| * Extracts GC ID from log. |
| * |
| * @param line - one line of log. |
| * @return GC ID |
| */ |
| public static Long getGcIdFromLine(String line, Pattern pattern) { |
| Optional<Long> gcId = getGcId(line, pattern); |
| if (!gcId.isPresent()) { |
| System.out.println(line); |
| throw new RuntimeException("Cannot find GC ID in log."); |
| } |
| return gcId.get(); |
| } |
| |
| /** |
| * Returns Map<Long,PlabStatistics> which contains specified statistics for specified gc ids. |
| * @param specifiedGcId gc id to get |
| * @param type PLAB type |
| * @param fieldsName name of fields in PlabStatistics |
| * @return |
| **/ |
| public Map<Long, PlabInfo> getSpecifiedStats(List<Long> specifiedGcId, LogParser.ReportType type, List<String> fieldsName) { |
| return getSpecifiedStats(specifiedGcId, type, fieldsName, true); |
| } |
| |
| /** |
| * Returns PlabStatistics for specified GC ID. |
| * @param specifiedGcId |
| * @param type type of statistics |
| * @param fieldsName name of fields in PlabStatistics |
| * @return |
| **/ |
| public PlabInfo getSpecifiedStats(long specifiedGcId, LogParser.ReportType type, List<String> fieldsName) { |
| return getSpecifiedStats(Arrays.asList(specifiedGcId), type, fieldsName, true).get(specifiedGcId); |
| } |
| |
| /** |
| * Returns Map<Long,PlabStatistics> which contains specified statistics. Filters out specified gc ids. |
| * @param specifiedGcIdForExclude |
| * @param type |
| * @param fieldsName |
| * @return |
| **/ |
| public Map<Long, PlabInfo> getExcludedSpecifiedStats(List<Long> specifiedGcIdForExclude, LogParser.ReportType type, List<String> fieldsName) { |
| return getSpecifiedStats(specifiedGcIdForExclude, type, fieldsName, false); |
| } |
| |
| private Map<Long, PlabInfo> getSpecifiedStats(List<Long> gcIds, LogParser.ReportType type, List<String> fieldNames, boolean extractId) { |
| return new HashMap<>( |
| getEntries().entryStream() |
| .filter(gcLogItem -> extractId == gcIds.contains(gcLogItem.getKey())) |
| .collect(Collectors.toMap(gcLogItem -> gcLogItem.getKey(), |
| gcLogItem -> gcLogItem.getValue().get(type).filter(fieldNames) |
| ) |
| ) |
| ); |
| } |
| } |