1 /* 2 * Copyright (c) 2016, 2020, 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.tool; 27 28 import java.io.IOException; 29 import java.io.PrintStream; 30 import java.nio.file.Path; 31 import java.time.Instant; 32 import java.time.ZoneOffset; 33 import java.time.format.DateTimeFormatter; 34 import java.util.ArrayList; 35 import java.util.Collections; 36 import java.util.Deque; 37 import java.util.HashMap; 38 import java.util.List; 39 import java.util.Locale; 40 41 import jdk.jfr.EventType; 42 import jdk.jfr.internal.MetadataDescriptor; 43 import jdk.jfr.internal.Type; 44 import jdk.jfr.internal.consumer.ChunkHeader; 45 import jdk.jfr.internal.consumer.FileAccess; 46 import jdk.jfr.internal.consumer.RecordingInput; 47 48 final class Summary extends Command { 49 private final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withLocale(Locale.UK).withZone(ZoneOffset.UTC); 50 51 @Override getName()52 public String getName() { 53 return "summary"; 54 } 55 56 private static class Statistics { Statistics(String name)57 Statistics(String name) { 58 this.name = name; 59 } 60 String name; 61 long count; 62 long size; 63 } 64 65 @Override getOptionSyntax()66 public List<String> getOptionSyntax() { 67 return Collections.singletonList("<file>"); 68 } 69 70 @Override displayOptionUsage(PrintStream stream)71 public void displayOptionUsage(PrintStream stream) { 72 stream.println(" <file> Location of the recording file (.jfr) to display information about"); 73 } 74 75 @Override getDescription()76 public String getDescription() { 77 return "Display general information about a recording file (.jfr)"; 78 } 79 80 @Override execute(Deque<String> options)81 public void execute(Deque<String> options) throws UserSyntaxException, UserDataException { 82 ensureMaxArgumentCount(options, 1); 83 Path p = getJFRInputFile(options); 84 try { 85 printInformation(p); 86 } catch (IOException e) { 87 couldNotReadError(p, e); 88 } 89 } 90 printInformation(Path p)91 private void printInformation(Path p) throws IOException { 92 long totalDuration = 0; 93 long chunks = 0; 94 95 try (RecordingInput input = new RecordingInput(p.toFile(), FileAccess.UNPRIVILEGED)) { 96 ChunkHeader first = new ChunkHeader(input); 97 ChunkHeader ch = first; 98 String eventPrefix = Type.EVENT_NAME_PREFIX; 99 if (first.getMajor() == 1) { 100 eventPrefix = "com.oracle.jdk."; 101 } 102 HashMap<Long, Statistics> stats = new HashMap<>(); 103 stats.put(0L, new Statistics(eventPrefix + "Metadata")); 104 stats.put(1L, new Statistics(eventPrefix + "CheckPoint")); 105 int minWidth = 0; 106 while (true) { 107 long chunkEnd = ch.getEnd(); 108 MetadataDescriptor md = ch.readMetadata(); 109 110 for (EventType eventType : md.getEventTypes()) { 111 stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName())); 112 minWidth = Math.max(minWidth, eventType.getName().length()); 113 } 114 115 totalDuration += ch.getDurationNanos(); 116 chunks++; 117 input.position(ch.getEventStart()); 118 while (input.position() < chunkEnd) { 119 long pos = input.position(); 120 int size = input.readInt(); 121 long eventTypeId = input.readLong(); 122 Statistics s = stats.get(eventTypeId); 123 if (s != null) { 124 s.count++; 125 s.size += size; 126 } 127 input.position(pos + size); 128 } 129 if (ch.isLastChunk()) { 130 break; 131 } 132 ch = ch.nextHeader(); 133 } 134 println(); 135 long epochSeconds = first.getStartNanos() / 1_000_000_000L; 136 long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L; 137 println(" Version: " + first.getMajor() + "." + first.getMinor()); 138 println(" Chunks: " + chunks); 139 println(" Start: " + DATE_FORMAT.format(Instant.ofEpochSecond(epochSeconds, adjustNanos)) + " (UTC)"); 140 println(" Duration: " + (totalDuration + 500_000_000) / 1_000_000_000 + " s"); 141 142 List<Statistics> statsList = new ArrayList<>(stats.values()); 143 Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count)); 144 println(); 145 String header = " Count Size (bytes) "; 146 String typeHeader = " Event Type"; 147 minWidth = Math.max(minWidth, typeHeader.length()); 148 println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header); 149 println(pad(minWidth + header.length(), '=')); 150 for (Statistics s : statsList) { 151 System.out.printf(" %-" + minWidth + "s%10d %12d\n", s.name, s.count, s.size); 152 } 153 } 154 } 155 pad(int count, char c)156 private String pad(int count, char c) { 157 StringBuilder sb = new StringBuilder(); 158 for (int i = 0; i < count; i++) { 159 sb.append(c); 160 } 161 return sb.toString(); 162 } 163 } 164