On Thu, 4 Nov 2021 02:15:45 GMT, Ioi Lam <ik...@openjdk.org> wrote:

>> LocalVmManager and PerfDataFile have APIs that are supposed to look for VMs 
>> owned by a specific user. No one uses these APIs, and they don't work anyway.
>> 
>> The current code is very confusing to look at. Since we're likely to change 
>> code in this area for further container support, it's better to clean up the 
>> code now.
>> 
>> - Remove all APIs that take a user name
>> - Also removed PerfDataFile.getFile() methods that are unused
>> - Cleaned up the code that looks up the hsperfdata_xxx files
>>   - Fix comments to explain what's happening
>>   - Avoid using Matcher.reset which is not thread-safe
>>   - Renamed confusing variables such as `userFilter` to make the code more 
>> readable
>>   - LocalVmManager.activeVms() probably doesn't need to be synchronized, but 
>> I kept it anyway to avoid unnecessary risks.
>> 
>> Testing with Oracle CI: tiers1-4, plus hs-tier5-rt (which tests containers 
>> and have extensive use of the management tools).
>
> Ioi Lam 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 three additional commits since 
> the last revision:
> 
>  - Merge branch 'master' into 
> 8275185-jvmstat-LocalVmManager-cleanup-and-remove-dead-code
>  - @kevinjwalls and @plummercj review - (1) restore 
> PerfDataFile.userDirNamePattern, etc. (2) Fixed comments
>  - 8275185: Remove dead code and clean up jvmstat LocalVmManager

Marked as reviewed by kevinw (Committer).

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

PR: https://git.openjdk.java.net/jdk/pull/5923

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