On Thu, 22 Feb 2024 00:14:23 GMT, Naoto Sato <na...@openjdk.org> wrote:

>> This is stemming from the PR: https://github.com/openjdk/jdk/pull/14211 
>> where aggressive GC can cause NPE in `BaseLocale$Key` class. I refactored 
>> the in-house cache with WeakHashMap, and removed the Key class as it is no 
>> longer needed (thus the original NPE will no longer be possible). Also with 
>> the new JMH test case, it gains some performance improvement:
>> 
>> (w/o fix)
>> 
>> Benchmark                       Mode  Cnt      Score     Error  Units
>> LocaleCache.testForLanguageTag  avgt   20   5781.275 ± 569.580  ns/op
>> LocaleCache.testLocaleOf        avgt   20  62564.079 ± 406.697  ns/op
>> 
>> (w/ fix)
>> Benchmark                       Mode  Cnt      Score     Error  Units
>> LocaleCache.testForLanguageTag  avgt   20   4801.175 ± 371.830  ns/op
>> LocaleCache.testLocaleOf        avgt   20  60394.652 ± 352.471  ns/op
>
> Naoto Sato has updated the pull request with a new target base due to a merge 
> or a rebase. The pull request now contains 34 commits:
> 
>  - Use ReferencedKeySet.intern()
>  - Merge branch 'master' into JDK-8309622-Cache-BaseLocale
>  - Merge branch 'master' into JDK-8309622-Cache-BaseLocale
>  - Restored the test
>  - Merge branch 'master' into JDK-8309622-Cache-BaseLocale
>  - Merge branch 'master' of https://git.openjdk.org/jdk into 
> JDK-8309622-Cache-BaseLocale
>  - small cleanup
>  - Merge branch 'pull/14684' into JDK-8309622-Cache-BaseLocale
>  - Update ReferencedKeyTest.java
>  - Simple versions of create
>  - ... and 24 more: https://git.openjdk.org/jdk/compare/b419e951...32ec51f7

After a hiatus, I now got back to work on this. I think I reflected all the 
comments (and removed the performance bench because it no longer offers an 
improvement).

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

PR Comment: https://git.openjdk.org/jdk/pull/14404#issuecomment-1960073243

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