RFR: 8369037: Identify owning method for MethodData and MethodCounters in AOT map output [v3]
María Arias de Reyna
duke at openjdk.org
Thu Oct 2 11:13:24 UTC 2025
> Part of https://bugs.openjdk.org/browse/JDK-8369037
>
> The AOT map file lists many objects without any kind of context of what they represent. For example, `MethodCounters` and `MethodData` do not show to what method they belong to. With this patch, now we can at least link the `MethodCounters` and `MethodData` to the `Method` they belong to.
>
> Before:
>
> $ cat aot.map | grep "@@ MethodCounters"
> [...]
> 0x0000000801e4c280: @@ MethodCounters 64
>
> ``` bash
> $ cat aot.map | grep "@@ MethodData"
> [...]
> 0x0000000801e44448: @@ MethodData 584
>
>
> After:
>
> $ cat aot.map | grep "@@ MethodCounters"
> [...]
> 0x0000000801f8b9a8: @@ MethodCounters 64 void jdk.internal.access.SharedSecrets.setJavaLangAccess(jdk.internal.access.JavaLangAccess)
> 0x0000000801f8be60: @@ MethodCounters 64 void java.lang.Object.notifyAll()
>
> ``` bash
> $ cat aot.map | grep "@@ MethodData"
> [...]
> 0x0000000801f700e0: @@ MethodData 728 int java.lang.module.ModuleDescriptor.hashCode()
> 0x0000000801f81af0: @@ MethodData 688 java.lang.String java.lang.Class.cannotCastMsg(java.lang.Object)
María Arias de Reyna has updated the pull request incrementally with one additional commit since the last revision:
Adding includes of mthodCounters and methodData headers
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/27603/files
- new: https://git.openjdk.org/jdk/pull/27603/files/7b317990..efb301d2
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=27603&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=27603&range=01-02
Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
Patch: https://git.openjdk.org/jdk/pull/27603.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/27603/head:pull/27603
PR: https://git.openjdk.org/jdk/pull/27603
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