> 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: add jdk.util.HexDigits, sharing cache array across multiple classes, including : java.lang.Long#fastUUID java.util.HexDigits java.lang.Long#toHexString(future) java.lang.Integer#toHexString(future) java.util.HexFormat(future) ------------- Changes: - all: https://git.openjdk.org/jdk/pull/14578/files - new: https://git.openjdk.org/jdk/pull/14578/files/f08444f4..17a9f169 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=14578&range=21 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14578&range=20-21 Stats: 125 lines in 4 files changed: 55 ins; 33 del; 37 mod Patch: https://git.openjdk.org/jdk/pull/14578.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14578/head:pull/14578 PR: https://git.openjdk.org/jdk/pull/14578
