On Thu, 1 Jun 2023 12:37:20 GMT, Alan Bateman <al...@openjdk.org> wrote:

>> This is the implementation for JEP 451. There are two parts to this:
>> 
>> 1. A multi-line warning is printed when a JVM TI or Java agent is loaded 
>> into a running VM. For JVM TI, the message is printed to stderr from 
>> JvmtiAgent::load. For Java agents, it is printed to System.err (as that may 
>> be redirected) in the JPLIS (j.l.instrumentation) implementation. This part 
>> includes an update to the JVM TI spec and API docs to require the warning.
>> 
>> 2. If running with -Djdk.instrument.traceUsage or 
>> -Djdk.instrument.traceUsage=true, the calls to the Instrumentation API print 
>> a trace message and stack trace.
>> 
>> Testing: tier1-6
>
> Alan Bateman has updated the pull request with a new target base due to a 
> merge or a rebase. The incremental webrev excludes the unrelated changes 
> brought in by the merge/rebase. The pull request contains 19 additional 
> commits since the last revision:
> 
>  - Split is_loaded, typos in comments
>  - Merge
>  - Add impl note to document the XX option
>  - Cleanup
>  - Merge
>  - Allow for warning to be skipped when same agent loaded a second/subsequent 
> time
>  - Merge
>  - Tweak javadoc, update test to use more test infra
>  - Merge
>  - Merge
>  - ... and 9 more: https://git.openjdk.org/jdk/compare/6cea493a...cbd9bb1d

The update looks good.
Thanks,
Serguei

-------------

Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13899#pullrequestreview-1455647274

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