1 /*
2 * Copyright (c) 2016, 2019, 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 }