On Fri, 4 Mar 2022 09:05:36 GMT, Yi Yang <yy...@openjdk.org> wrote:
>> 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$DMH+0x0000000800c0b000'
>> - vtable length 5 (start addr: 0x0000000800c0b1b8)
>> - itable length 2 (start addr: 0x0000000800c0b1e0)
>> - ---- static fields (1 words):
>> - static final '_D_0' 'Ljava/lang/invoke/LambdaForm;' @112
>> - ---- non-static fields (0 words):
>> ...
>
> Yi Yang has updated the pull request incrementally with one additional commit
> since the last revision:
>
> use %4d
> _Mailing list message from [Bernd Eckenfels](mailto:e...@zusammenkunft.net)
> on [hotspot-dev](mailto:hotspot-...@mail.openjdk.java.net):_
>
> Hello,
>
> I would add an additional argument to allow substring filtering on the fully
> qualified class name (like com/example or UtilClass), since this can creator
> reduce processing/printing time. But I guess that can be added as an
> additional feature later on (maybe only the ?verbose? variant can conflict if
> this is not a option (-verbose?).
>
> Gruss Bernd -- http://bernd.eckenfels.net ________________________________
> Von: serviceability-dev <serviceability-dev-retn at openjdk.java.net> im
> Auftrag von Yi Yang <yyang at openjdk.java.net> Gesendet: Monday, March 7,
> 2022 3:33:59 AM An: hotspot-dev at openjdk.java.net <hotspot-dev at
> openjdk.java.net>; serviceability-dev at openjdk.java.net <serviceability-dev
> at openjdk.java.net> Betreff: Re: RFR: 8275775: Add jcmd VM.classes to print
> details of all classes [v10]
>
> On Fri, 4 Mar 2022 09:05:36 GMT, Yi Yang <yyang at openjdk.org> wrote:
>
> > > Add VM.classes to print details of all classes, output looks like:
> > > 1. jcmd VM.classes
> > > KlassAddr Size State Flags LoaderName ClassName
> > > 0x0000000800c0b400 62 inited W bootstrap
> > > java.lang.invoke.LambdaForm$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):
> > > ...
> >
> >
> > Yi Yang has updated the pull request incrementally with one additional
> > commit since the last revision:
> > use %4d
>
> Thank you for taking time to help review. 3 approval, I want to merge this
> tomorrow if no objections/comments.
>
> -------------
>
> PR: https://git.openjdk.java.net/jdk/pull/7105
Hi Bernd,
Class filter has been discussed before on PR(Please follow previous comments
for more details). The conclusion is a filter won't save much runtime time. We
can leave it to the external tools(grep/awk,etc).
-------------
PR: https://git.openjdk.java.net/jdk/pull/7105
