源码结构

看大项目，历史久远的项目的源码，其中之一的麻烦是目录结构繁杂。下面说说 OpenJDK 的目录结构。

https://openjdk.org/guide/

• hotspot

  • cpu - Compiler, Runtime

  • os - Runtime

  • os_cpu - Compiler

  • share

    • adlc - Compiler

    • asm - Runtime

    • c1 - Compiler

    • cds - Runtime

    • ci - Compiler

    • classfile - Runtime

    • code - Compiler

    • compiler - Compiler

    • gc - GC

    • include - HotSpot

    • interpreter - Runtime

    • jfr - JFR

    • jvmci - Compiler

    • libadt - Compiler

    • logging - Runtime

    • memory - GC, Runtime

    • metaprogramming - HotSpot

    • nmt - Runtime

    • oops - GC, Runtime

    • opto - Compiler

    • precompiled - HotSpot

    • prims - Runtime, Serviceability

    • runtime - Runtime

    • sanitizers - Runtime

    • services - Runtime

    • utilities - GC, Runtime

• java.base

  • Core Libs should almost always be included but Java Language, HotSpot, Security and/or I18n may also be involved.

  • [linux]/classes

    • com/sun/crypto - Security

    • com/sun/security - Security

    • crypto - Security

    • [linux]/internal

      • access - Core Libs, Security

      • event - JFR

      • foreign - Core Libs

      • icu - Core Libs

      • io - Core Libs

      • javac - Java Language (javac)

      • jimage - Core Libs

      • jmod - Core Libs

      • jrtfs - Core Libs

      • [aix, macosx, share, unix, windows]/loader - Core Libs

      • logger - Core Libs

      • math - Core Libs

      • [share, unix, windows]/misc - Core Libs, HotSpot

      • module - Core Libs

      • org/objectweb - Core Libs

      • org/xml - Core Libs

      • perf - Runtime

      • [linux, share, unix, windows]/platform - HotSpot

      • ref - Core Libs, GC

      • reflect - Core Libs

      • util/random - Core Libs

      • util/regex - Core Libs

      • util/xml - Core Libs

      • vm - HotSpot

    • invoke - Core Libs

    • [share, sun, unix]/io - Core Libs

    • [unix]/java

      • [share, unix, windows]/lang - Core Libs

      • math - Core Libs

      • time - Core Libs

    • launcher - Tools, Core Libs

    • META-INF/services - Core Libs

    • [javax, macosx]/net - Net

    • [aix, java, linux, macosx, unix, windows]/nio - NIO

    • reflect - Core Libs

    • [apple, java, javax, macosx, unix, windows]/security - Security

    • [java, sun]/text - I18n

    • [java, macosx, windows]/util - I18n, Core Libs

  • [unix]/conf

    • sdp - Net

    • security - Security

  • [share, windows]/legal

  • [share, windows]/lib/security - Security

  • man

    • java.1 - Tools, HotSpot

    • keytool.1 - Security

  • [unix]/native

    • common

    • [share, unix, windows]/include - Runtime, Core Libs

    • jspawnhelper - Tools

    • [share, unix, windows]/launcher - Tools

    • [aix, linux, macosx, share, unix, windows]/libjava - Core Libs

    • [share, unix, windows]/libjimage - Core Libs

    • [aix, macosx, share, unix, windows]/libjli - Tools, Core Libs

    • libjsig - HotSpot

    • [macosx, share, unix, windows]/libnet - Net

    • [aix, linux, macosx, share, unix, windows]/libnio - NIO

    • libosxsecurity - Security

    • [aix, share, windows]/libsyslookup - Core Libs

    • libverify - Runtime

    • libzip - Core Libs

  • share/data

    • blockedcertsconverter - Security

    • cacerts - Security

    • currency - I18n

    • lsrdata - I18n

    • publicsuffixlist - Client Libs

    • tzdata - I18n

    • unicodedata - I18n

• java.compiler - Java Language (javac)