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JDK 11 jdk.jfr.jmod - JFR Module
JDK 11 jdk.jfr.jmod is the JMOD file for JDK 11 JFR module.
JDK 11 JFR module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.jfr.jmod.
JDK 11 JFR module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 JFR module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.jfr.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/jfr/internal/cmd/SummaryCommand.java
/* * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.jfr.internal.cmd; import java.io.IOException; import java.nio.file.Path; import java.nio.file.Paths; import java.time.Duration; import java.time.Instant; import java.util.ArrayList; import java.util.Collections; import java.util.Deque; import java.util.HashMap; import java.util.List; import jdk.jfr.EventType; import jdk.jfr.internal.MetadataDescriptor; import jdk.jfr.internal.Type; import jdk.jfr.internal.consumer.ChunkHeader; import jdk.jfr.internal.consumer.RecordingInput; final class SummaryCommand extends Command { private static class Statistics { Statistics(String name) { this.name = name; } String name; long count; long size; } @Override public String getOptionSyntax() { return "<file>"; } @Override public void displayOptionUsage() { println(" <file> Location of the recording file (.jfr) to display information about"); } @Override public String getName() { return "summary"; } @Override public String getDescription() { return "Display general information about a recording file (.jfr)"; } @Override public void execute(Deque<String> options) { if (options.isEmpty()) { userFailed("Missing file"); } ensureMaxArgumentCount(options, 1); Path p = Paths.get(options.remove()); ensureFileExist(p); ensureJFRFile(p); try { printInformation(p); } catch (IOException e) { throw new IllegalStateException("Unexpected error. " + e.getMessage()); } } private void printInformation(Path p) throws IOException { long totalSize = 0; long totalDuration = 0; long chunks = 0; try (RecordingInput input = new RecordingInput(p.toFile())) { ChunkHeader first = new ChunkHeader(input); ChunkHeader ch = first; String eventPrefix = Type.EVENT_NAME_PREFIX; if (first.getMajor() == 1) { eventPrefix = "com.oracle.jdk."; } HashMap<Long, Statistics> stats = new HashMap<>(); stats.put(0L, new Statistics(eventPrefix + "Metadata")); stats.put(1L, new Statistics(eventPrefix + "CheckPoint")); int minWidth = 0; while (true) { long chunkEnd = ch.getEnd(); MetadataDescriptor md = ch.readMetadata(); for (EventType eventType : md.getEventTypes()) { stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName())); minWidth = Math.max(minWidth, eventType.getName().length()); } totalSize += ch.getSize(); totalDuration += ch.getDuration(); chunks++; input.position(ch.getEventStart()); while (input.position() < chunkEnd) { long pos = input.position(); int size = input.readInt(); long eventTypeId = input.readLong(); Statistics s = stats.get(eventTypeId); if (s != null) { s.count++; s.size += size; } input.position(pos + size); } if (ch.isLastChunk()) { break; } ch = ch.nextHeader(); } println(); long epochSeconds = first.getStartNanos() / 1_000_000_000L; long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L; println(" Version: " + first.getMajor() + "." + first.getMinor()); println(" Chunks: " + chunks); println(" Size: " + totalSize + " bytes"); println(" Start: " + Instant.ofEpochSecond(epochSeconds, adjustNanos)); println(" Duration: " + Duration.ofNanos(totalDuration)); println(); println(" Start Ticks: " + first.getStartTicks()); println(" Ticks / Second: " + first.getTicksPerSecond()); List<Statistics> statsList = new ArrayList<>(stats.values()); Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count)); println(); String header = " Count Size (bytes) "; String typeHeader = " Event Type"; minWidth = Math.max(minWidth, typeHeader.length()); println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header); println(pad(minWidth + header.length(), '=')); for (Statistics s : statsList) { System.out.printf(" %-" + minWidth + "s%10d %12d\n", s.name, s.count, s.size); } } } private String pad(int count, char c) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < count; i++) { sb.append(c); } return sb.toString(); } }
⏎ jdk/jfr/internal/cmd/SummaryCommand.java
Or download all of them as a single archive file:
File name: jdk.jfr-11.0.1-src.zip File size: 237632 bytes Release date: 2018-11-04 Download
⇒ JDK 11 jdk.jlink.jmod - JLink Tool
2020-06-30, 43683👍, 0💬
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