1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal.cmd; 27 28 import java.io.IOException; 29 import java.nio.file.Path; 30 import java.nio.file.Paths; 31 import java.time.Duration; 32 import java.time.Instant; 33 import java.util.ArrayList; 34 import java.util.Collections; 35 import java.util.Deque; 36 import java.util.HashMap; 37 import java.util.List; 38 39 import jdk.jfr.EventType; 40 import jdk.jfr.internal.MetadataDescriptor; 41 import jdk.jfr.internal.consumer.ChunkHeader; 42 import jdk.jfr.internal.consumer.RecordingInput; 43 44 final class SummaryCommand extends Command { 45 46 private static class Statistics { 47 Statistics(String name) { 48 this.name = name; 49 } 50 51 String name; 52 long count; 53 long size; 54 } 55 56 @Override 57 public String getOptionSyntax() { 58 return "<file>"; 59 } 60 61 @Override 62 public void displayOptionUsage() { 63 println(" <file> Location of the recording file (.jfr) to display information about"); 64 } 65 66 @Override 67 public String getName() { 68 return "summary"; 69 } 70 71 @Override 72 public String getDescription() { 73 return "Display general information about a recording file (.jfr)"; 74 } 75 76 @Override 77 public void execute(Deque<String> options) { 78 if (options.isEmpty()) { 79 userFailed("Missing file"); 80 } 81 ensureMaxArgumentCount(options, 1); 82 Path p = Paths.get(options.remove()); 83 ensureFileExist(p); 84 ensureJFRFile(p); 85 try { 86 printInformation(p); 87 } catch (IOException e) { 88 throw new IllegalStateException("Unexpected error. " + e.getMessage()); 89 } 90 } 91 92 private void printInformation(Path p) throws IOException { 93 long totalSize = 0; 94 long totalDuration = 0; 95 long chunks = 0; 96 97 try (RecordingInput input = new RecordingInput(p.toFile())) { 98 ChunkHeader first = new ChunkHeader(input); 99 ChunkHeader ch = first; 100 HashMap<Long, Statistics> stats = new HashMap<>(); 101 stats.put(0L, new Statistics("com.oracle.jdk.Metadata")); 102 stats.put(1L, new Statistics("com.oracle.jdk.CheckPoint")); 103 int minWidth = 0; 104 while (true) { 105 long chunkEnd = ch.getEnd(); 106 MetadataDescriptor md = ch.readMetadata(); 107 108 for (EventType eventType : md.getEventTypes()) { 109 stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName())); 110 minWidth = Math.max(minWidth, eventType.getName().length()); 111 } 112 113 totalSize += ch.getSize(); 114 totalDuration += ch.getDuration(); 115 chunks++; 116 input.position(ch.getEventStart()); 117 while (input.position() < chunkEnd) { 118 119 long pos = input.position(); 120 int size = input.readInt(); 121 long eventTypeId = input.readLong(); 122 Statistics s = stats.get(eventTypeId); 123 124 if (s != null) { 125 s.count++; 126 s.size += size; 127 } 128 input.position(pos + size); 129 } 130 if (ch.isLastChunk()) { 131 break; 132 } 133 ch = ch.nextHeader(); 134 } 135 println(); 136 long epochSeconds = first.getStartNanos() / 1_000_000_000L; 137 long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L; 138 println(" Version: " + first.getMajor() + "." + first.getMinor()); 139 println(" Chunks: " + chunks); 140 println(" Size: " + totalSize + " bytes"); 141 println(" Start: " + Instant.ofEpochSecond(epochSeconds, adjustNanos)); 142 println(" Duration: " + Duration.ofNanos(totalDuration)); 143 println(); 144 println(" Start Ticks: " + first.getStartTicks()); 145 println(" Ticks / Second: " + first.getTicksPerSecond()); 146 147 List<Statistics> statsList = new ArrayList<>(stats.values()); 148 Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count)); 149 println(); 150 String header = " Count Size (bytes) "; 151 String typeHeader = " Event Type"; 152 minWidth = Math.max(minWidth, typeHeader.length()); 153 println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header); 154 println(pad(minWidth + header.length(), '=')); 155 for (Statistics s : statsList) { 156 System.out.printf(" %-" + minWidth + "s%10d %12d\n", s.name, s.count, s.size); 157 } 158 } 159 } 160 161 private String pad(int count, char c) { 162 StringBuilder sb = new StringBuilder(); 163 for (int i = 0; i < count; i++) { 164 sb.append(c); 165 } 166 return sb.toString(); 167 } 168 }