On Wed, 20 Dec 2023 07:29:07 GMT, Jaikiran Pai <j...@openjdk.org> wrote:

>> Can I please get a review of this change which proposes to improve the code 
>> in `get_user_name_slow` function, which is used to identify the target JVM 
>> owner's user name? This addresses 
>> https://bugs.openjdk.org/browse/JDK-8321971.
>> 
>> As noted in that JBS issue, in its current form, the nested loop ends up 
>> iterating over the directory contents of `hsperfdata_xxx` directory and then 
>> for each iteration it checks if the name of the entry matches the pid. This 
>> iteration shouldn't be needed and instead one could look for a file named 
>> `<pid>` within that directory.
>> 
>> No new test has been added, given the nature of this change. Existing tier1, 
>> tier2, tier3 and svc_tools tests pass with this change on Linux, Windows and 
>> macosx.
>
> Jaikiran Pai 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 five additional 
> commits since the last revision:
> 
>  - remove redundant if block
>  - merge latest from master branch
>  - David's review comments - reduce if blocks and release the array outside 
> if block
>  - David's review comment - punctuation
>  - 8321971: Improve the user name detection logic in perfMemory 
> get_user_name_slow

Hello Johan, thank you for that input and sorry about the delay in responding. 
I got side tracked with a few other things. I plan to refresh this PR and 
address the comments, this week.

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PR Comment: https://git.openjdk.org/jdk/pull/17104#issuecomment-1964357753

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