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  1. JDK
  2. JDK-8275775

Add jcmd VM.classes to print details of all classes

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 18
    • Fix Version/s: 19
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b13

      Description

      Add VM.classes to print details of all classes, output looks like:

      1. jcmd VM.classes
      KlassAddr Size State Flags LoaderName ClassName
      0x0000000800c0b400 62 inited W bootstrap java.lang.invoke.LambdaForm$MH/0x0000000800c0b400
      0x0000000800c0b000 62 inited W bootstrap java.lang.invoke.LambdaForm$DMH/0x0000000800c0b000
      0x0000000800c0ac00 62 inited W bootstrap java.lang.invoke.LambdaForm$MH/0x0000000800c0ac00
      ...

      2. jcmd VM.classes verbose
      KlassAddr Size State Flags LoaderName ClassName
      0x0000000800c0b400 62 inited W bootstrap java.lang.invoke.LambdaForm$MH/0x0000000800c0b400
      java.lang.invoke.LambdaForm$MH/0x0000000800c0b400 {0x0000000800c0b400}
       - instance size: 2
       - klass size: 62
       - access: final synchronized
       - state: inited
       - name: 'java/lang/invoke/LambdaForm$MH+0x0000000800c0b400'
       - super: 'java/lang/Object'
       - sub:
       - arrays: NULL
       - methods: Array<T>(0x00007f620841f210)
       - method ordering: Array<T>(0x0000000800a7e5a8)
       - default_methods: Array<T>(0x0000000000000000)
       - local interfaces: Array<T>(0x00000008005af748)
       - trans. interfaces: Array<T>(0x00000008005af748)
       - constants: constant pool [41] {0x00007f620841f030} for 'java/lang/invoke/LambdaForm$MH+0x0000000800c0b400' cache=0x00007f620841f380
       - class loader data: loader data: 0x00007f61c804a690 of 'bootstrap' has a class holder
       - source file: 'LambdaForm$MH'
       - class annotations: Array<T>(0x0000000000000000)
       - class type annotations: Array<T>(0x0000000000000000)
       - field annotations: Array<T>(0x0000000000000000)
       - field type annotations: Array<T>(0x0000000000000000)
       - inner classes: Array<T>(0x00000008005af6d8)
       - nest members: Array<T>(0x00000008005af6d8)
       - permitted subclasses: Array<T>(0x00000008005af6d8)
       - java mirror: a 'java/lang/Class'{0x000000011f4b3968} = 'java/lang/invoke/LambdaForm$MH+0x0000000800c0b400'
       - vtable length 5 (start addr: 0x0000000800c0b5b8)
       - itable length 2 (start addr: 0x0000000800c0b5e0)
       - ---- static fields (1 words):
       - static final '_D_0' 'Ljava/lang/invoke/LambdaForm;' @112
       - ---- non-static fields (0 words):
       - non-static oop maps:
      0x0000000800c0b000 62 inited W bootstrap java.lang.invoke.LambdaForm$DMH/0x0000000800c0b000
      java.lang.invoke.LambdaForm$DMH/0x0000000800c0b000 {0x0000000800c0b000}
       - instance size: 2
       - klass size: 62
       - access: final synchronized
       - state: inited
       - name: 'java/lang/invoke/LambdaForm$DMH+0x0000000800c0b000'
       - super: 'java/lang/Object'
       - sub:
       - arrays: NULL
       - methods: Array<T>(0x00007f620841ea68)
       - method ordering: Array<T>(0x0000000800a7e5a8)
       - default_methods: Array<T>(0x0000000000000000)
       - local interfaces: Array<T>(0x00000008005af748)
       - trans. interfaces: Array<T>(0x00000008005af748)
       - constants: constant pool [49] {0x00007f620841e838} for 'java/lang/invoke/LambdaForm$DMH+0x0000000800c0b000' cache=0x00007f620841ebe0
       - class loader data: loader data: 0x00007f61c804a750 of 'bootstrap' has a class holder
       - source file: 'LambdaForm$DMH'
       - class annotations: Array<T>(0x0000000000000000)
       - class type annotations: Array<T>(0x0000000000000000)
       - field annotations: Array<T>(0x0000000000000000)
       - field type annotations: Array<T>(0x0000000000000000)
       - inner classes: Array<T>(0x00000008005af6d8)
       - nest members: Array<T>(0x00000008005af6d8)
       - permitted subclasses: Array<T>(0x00000008005af6d8)
       - java mirror: a 'java/lang/Class'{0x000000011f4b0968} = 'java/lang/invoke/LambdaForm$DMH+0x0000000800c0b000'
       - vtable length 5 (start addr: 0x0000000800c0b1b8)
       - itable length 2 (start addr: 0x0000000800c0b1e0)
       - ---- static fields (1 words):
       - static final '_D_0' 'Ljava/lang/invoke/LambdaForm;' @112
       - ---- non-static fields (0 words):
      ...

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              Assignee:
              yyang Yi Yang
              Reporter:
              yyang Yi Yang
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                Dates

                Created:
                Updated:
                Resolved: