On Fri, 23 Jun 2023 11:24:23 GMT, 温绍锦 <d...@openjdk.org> wrote:
>> By optimizing the implementation of java.lang.Long#fastUUID, the performance >> of the java.util.UUID#toString method can be significantly improved. >> >> The following are the test results of JMH: >> >> Benchmark Mode Cnt Score Error Units >> UUIDUtilsBenchmark.new thrpt 5 92676.550 ± 292.213 ops/ms >> UUIDUtilsBenchmark.original thrpt 5 37040.165 ± 1023.532 ops/ms > > 温绍锦 has updated the pull request incrementally with one additional commit > since the last revision: > > format code src/java.base/share/classes/java/lang/Long.java line 493: > 491: | H256[((int) lsb) & 0xff]); > 492: > 493: return new String(buf, LATIN1); Note that this isn’t correct when `COMPACT_STRINGS` is `false`, as then `buf` is always interpreted as having a `coder` of `UTF16`. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/14578#discussion_r1240231921
