On Tue, 9 Feb 2021 12:54:12 GMT, Claes Redestad <redes...@openjdk.org> wrote:
> This refactor some `sun.nio.cs.ext` charsets, such as ISO-2022-CN-GB, > ISO-2022-CN-CNS, ISO-2022-KR and a few others to use static rather than > per-instance auxiliary decoders. Doing so reduce overheads of calling > `charset.newDecoder()`. This reduce or eliminate regressions on `new > String(byte[], String)` operations due the removal of thread-local decoder > caching in [JDK-8259842](https://bugs.openjdk.java.net/browse/JDK-8259842) > > Most ISO-2022 Charsets define a specialized decoder already. The > `ISO2022.Decoder` class was only used by `ISO2022_KR`, so folding it into > that implementation and simplifying the code brings a rather significant > speed-up, both to decoder creation and on actual decoding. > > Testing: tier1-3, manual runs of sun.nio.cs tests This pull request has now been integrated. Changeset: 8b6ab31d Author: Claes Redestad <redes...@openjdk.org> URL: https://git.openjdk.java.net/jdk/commit/8b6ab31d Stats: 761 lines in 15 files changed: 257 ins; 404 del; 100 mod 8261418: Reduce decoder creation overheads for sun.nio.cs.ext Charsets Reviewed-by: naoto ------------- PR: https://git.openjdk.java.net/jdk/pull/2480
