On Wed, 4 Jun 2025 21:20:46 GMT, Justin Lu <j...@openjdk.org> wrote:
> Please review this PR which improves occurrences of lazy computation in
> `Locale` and `BaseLocale`.
>
> Existing lazy initialization strategies such as CHM, static nested class, and
> local inner class are replaced with Stable Values.
>
> Lambda usage is intentionally avoided in this change during `Locale` creation
> and in static fields due to potential startup performance degradation as
> noted by [JDK-8331932](https://bugs.openjdk.org/browse/JDK-8331932).
>
> Rather than convert `iso3166CodesMap` to a Stable Map, each ISO 3166 resource
> is represented as a SV. Also, I did not think it was necessary to maintain a
> SV for _both_ the array and set of ISO3166-1 alpha-2 codes.
src/java.base/share/classes/java/util/Locale.java line 1269:
> 1267: public static String[] getISOCountries() {
> 1268: String[] countries = ISO_3166_1_ALPHA2.get();
> 1269: return Arrays.copyOf(countries, countries.length);
what about `return ISO_3166_1_ALPHA2.get().clone();`
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PR Review Comment: https://git.openjdk.org/jdk/pull/25646#discussion_r2128662123
