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.Type;
42 import jdk.jfr.internal.consumer.ChunkHeader;
43 import jdk.jfr.internal.consumer.RecordingInput;
44
45 final class SummaryCommand extends Command {
46
47 private static class Statistics {
48 Statistics(String name) {
49 this.name = name;
50 }
51
52 String name;
53 long count;
54 long size;
55 }
56
57 @Override
58 public String getOptionSyntax() {
59 return "<file>";
60 }
61
62 @Override
63 public void displayOptionUsage() {
64 println(" <file> Location of the recording file (.jfr) to display information about");
65 }
66
67 @Override
68 public String getName() {
69 return "summary";
70 }
71
72 @Override
73 public String getDescription() {
74 return "Display general information about a recording file (.jfr)";
75 }
76
77 @Override
78 public void execute(Deque<String> options) {
79 if (options.isEmpty()) {
80 userFailed("Missing file");
81 }
82 ensureMaxArgumentCount(options, 1);
83 Path p = Paths.get(options.remove());
84 ensureFileExist(p);
85 ensureJFRFile(p);
86 try {
87 printInformation(p);
88 } catch (IOException e) {
89 throw new IllegalStateException("Unexpected error. " + e.getMessage());
90 }
91 }
92
93 private void printInformation(Path p) throws IOException {
94 long totalSize = 0;
95 long totalDuration = 0;
96 long chunks = 0;
97
98 try (RecordingInput input = new RecordingInput(p.toFile())) {
99 ChunkHeader first = new ChunkHeader(input);
100 ChunkHeader ch = first;
101 String eventPrefix = Type.EVENT_NAME_PREFIX;
102 if (first.getMajor() == 1) {
103 eventPrefix = "com.oracle.jdk.";
104 }
105 HashMap<Long, Statistics> stats = new HashMap<>();
106 stats.put(0L, new Statistics(eventPrefix + "Metadata"));
107 stats.put(1L, new Statistics(eventPrefix + "CheckPoint"));
108 int minWidth = 0;
109 while (true) {
110 long chunkEnd = ch.getEnd();
111 MetadataDescriptor md = ch.readMetadata();
112
113 for (EventType eventType : md.getEventTypes()) {
114 stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName()));
115 minWidth = Math.max(minWidth, eventType.getName().length());
116 }
117
118 totalSize += ch.getSize();
119 totalDuration += ch.getDuration();
120 chunks++;
121 input.position(ch.getEventStart());
122 while (input.position() < chunkEnd) {
123
124 long pos = input.position();
125 int size = input.readInt();
126 long eventTypeId = input.readLong();
127 Statistics s = stats.get(eventTypeId);
128
129 if (s != null) {
130 s.count++;
131 s.size += size;
132 }
133 input.position(pos + size);
134 }
135 if (ch.isLastChunk()) {
136 break;
137 }
138 ch = ch.nextHeader();
139 }
140 println();
141 long epochSeconds = first.getStartNanos() / 1_000_000_000L;
142 long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L;
143 println(" Version: " + first.getMajor() + "." + first.getMinor());
144 println(" Chunks: " + chunks);
145 println(" Size: " + totalSize + " bytes");
146 println(" Start: " + Instant.ofEpochSecond(epochSeconds, adjustNanos));
147 println(" Duration: " + Duration.ofNanos(totalDuration));
148 println();
149 println(" Start Ticks: " + first.getStartTicks());
150 println(" Ticks / Second: " + first.getTicksPerSecond());
151
152 List<Statistics> statsList = new ArrayList<>(stats.values());
153 Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count));
154 println();
155 String header = " Count Size (bytes) ";
156 String typeHeader = " Event Type";
157 minWidth = Math.max(minWidth, typeHeader.length());
158 println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header);
159 println(pad(minWidth + header.length(), '='));
160 for (Statistics s : statsList) {
161 System.out.printf(" %-" + minWidth + "s%10d %12d\n", s.name, s.count, s.size);
162 }
163 }
164 }
165
166 private String pad(int count, char c) {
167 StringBuilder sb = new StringBuilder();
168 for (int i = 0; i < count; i++) {
169 sb.append(c);
170 }
171 return sb.toString();
172 }
173 }