| /* |
| * 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. |
| */ |
| |
| import java.util.Arrays; |
| |
| import jdk.testlibrary.Utils; |
| import static jdk.testlibrary.Asserts.*; |
| |
| /** |
| * The helper class for parsing following output from command 'jstat -gcutil': |
| * |
| * S0 S1 E O M CCS YGC YGCT FGC FGCT GCT |
| * 100.00 0.00 64.68 13.17 73.39 33.46 2 0.003 1 0.156 0.158 |
| * 100.00 0.00 76.54 13.17 73.39 33.46 2 0.003 1 0.156 0.158 |
| * 100.00 0.00 83.49 13.17 73.39 33.46 2 0.003 1 0.156 0.158 |
| * 100.00 0.00 84.53 13.17 73.39 33.46 2 0.003 1 0.156 0.158 |
| * 100.00 0.00 85.57 13.17 73.39 33.46 2 0.003 1 0.156 0.158 |
| * |
| * It will be verified that numerical values have defined types and are reasonable, |
| * for example percentage should fit within 0-100 interval. |
| */ |
| public class JstatGCUtilParser { |
| |
| public enum GcStatisticsType { |
| INTEGER, DOUBLE, PERCENTAGE, PERCENTAGE_OR_DASH; |
| } |
| |
| public enum GcStatistics { |
| S0(GcStatisticsType.PERCENTAGE), |
| S1(GcStatisticsType.PERCENTAGE), |
| E(GcStatisticsType.PERCENTAGE), |
| O(GcStatisticsType.PERCENTAGE), |
| M(GcStatisticsType.PERCENTAGE), |
| CCS(GcStatisticsType.PERCENTAGE_OR_DASH), |
| YGC(GcStatisticsType.INTEGER), |
| YGCT(GcStatisticsType.DOUBLE), |
| FGC(GcStatisticsType.INTEGER), |
| FGCT(GcStatisticsType.DOUBLE), |
| GCT(GcStatisticsType.DOUBLE); |
| |
| private final GcStatisticsType type; |
| |
| private GcStatistics(GcStatisticsType type) { |
| this.type = type; |
| } |
| |
| private GcStatisticsType getType() { |
| return type; |
| } |
| |
| public static boolean isHeadline(String... valueArray) { |
| if (valueArray.length != values().length) { |
| return false; |
| } |
| int headersCount = 0; |
| for (int i = 0; i < values().length; i++) { |
| if (valueArray[i].equals(values()[i].toString())) { |
| headersCount++; |
| } |
| } |
| if (headersCount != values().length) { |
| return false; |
| } |
| return true; |
| } |
| |
| private static void verifyLength(String... valueArray) throws Exception { |
| assertEquals(valueArray.length, values().length, |
| "Invalid number of data columns: " + Arrays.toString(valueArray)); |
| } |
| |
| public static void verify(String... valueArray) throws Exception { |
| verifyLength(valueArray); |
| for (int i = 0; i < values().length; i++) { |
| GcStatisticsType type = values()[i].getType(); |
| String value = valueArray[i].trim(); |
| if (type.equals(GcStatisticsType.INTEGER)) { |
| Integer.parseInt(value); |
| break; |
| } |
| if (type.equals(GcStatisticsType.DOUBLE)) { |
| Double.parseDouble(value); |
| break; |
| } |
| if (type.equals(GcStatisticsType.PERCENTAGE_OR_DASH) && |
| value.equals("-")) { |
| break; |
| } |
| double percentage = Double.parseDouble(value); |
| assertTrue(0 <= percentage && percentage <= 100, |
| "Not a percentage: " + value); |
| } |
| } |
| |
| } |
| |
| private final String output; |
| |
| public JstatGCUtilParser(String output) { |
| this.output = output; |
| } |
| |
| public String getOutput() { |
| return output; |
| } |
| |
| /** |
| * The function will discard any lines that come before the header line. |
| * This can happen if the JVM outputs a warning message for some reason |
| * before running jstat. |
| */ |
| public void parse(int samples) throws Exception { |
| boolean headlineFound = false; |
| int datalineCount = 0; |
| |
| String[] lines = output.split(Utils.NEW_LINE); |
| for (String line : lines) { |
| line = line.replaceAll("\\s+", " ").trim(); |
| String[] valueArray = line.split(" "); |
| |
| if (!headlineFound) { |
| headlineFound = GcStatistics.isHeadline(valueArray); |
| continue; |
| } |
| |
| GcStatistics.verify(valueArray); |
| datalineCount++; |
| } |
| |
| assertTrue(headlineFound, "No or invalid headline found, expected: " + |
| Utils.NEW_LINE + Arrays.toString(GcStatistics.values()).replaceAll(",", " ")); |
| assertEquals(samples, datalineCount, |
| "Expected " + samples + " samples, got " + datalineCount); |
| } |
| |
| } |