On Mon, 21 Apr 2025 07:00:36 GMT, Shaojin Wen <s...@openjdk.org> wrote:
> In BufferedReader.readLine and other similar scenarios, we need to use > StringBuilder.append(char[]) to build the string. > > For these scenarios, we can Unsafe.copyMemory instead of the character copy > of the char-by-char loop to improve the speed. > > @RogerRiggs completed the optimization when the encoder is LATIN1 in PR > #24967. This PR continues to complete the optimization when the encoder is > UTF16. This pull request has now been integrated. Changeset: e2feff85 Author: Shaojin Wen <s...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/e2feff85995cf2d0b8ecc2262cf4e74b74de3e31 Stats: 40 lines in 2 files changed: 32 ins; 6 del; 2 mod 8355177: Speed up StringBuilder::append(char[]) via Unsafe::copyMemory Reviewed-by: rriggs, rgiulietti ------------- PR: https://git.openjdk.org/jdk/pull/24773
