> 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.
Shaojin Wen has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits: - inline checkBoundsBeginEnd, from @RogerRiggs - inline putCharsUnchecked, from @RogerRiggs - Merge remote-tracking branch 'upstream/master' into optim_sb_append_chars_202504 - copyright - Merge remote-tracking branch 'upstream/master' into optim_sb_append_chars_202504 # Conflicts: # src/java.base/share/classes/java/lang/AbstractStringBuilder.java - Merge remote-tracking branch 'upstream/master' into optim_sb_append_chars_202504 # Conflicts: # src/java.base/share/classes/java/lang/AbstractStringBuilder.java - Merge remote-tracking branch 'upstream/master' into optim_sb_append_chars_202504 # Conflicts: # src/java.base/share/classes/java/lang/StringUTF16.java - putCharsUnchecked - copyright - Using StringUTF16.compress to speed up LATIN1 StringBuilder append(char[]) - ... and 2 more: https://git.openjdk.org/jdk/compare/50910576...2a45cfc1 ------------- Changes: https://git.openjdk.org/jdk/pull/24773/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24773&range=05 Stats: 42 lines in 2 files changed: 34 ins; 6 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/24773.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24773/head:pull/24773 PR: https://git.openjdk.org/jdk/pull/24773
