> In the Throwable::printStackTrace method, StringBuilder is created multiple > times to build String. By sharing StringBuilder to build String, object > allocation and copying are reduced. > > In the scenario without suppressed and ourCause, unused IdentityHashMap is > not created. > > Through these optimizations, the performance of `new > Exception().printStackTrace()` can be improved by about 10%.
Shaojin Wen has updated the pull request incrementally with one additional commit since the last revision: fix code style ------------- Changes: - all: https://git.openjdk.org/jdk/pull/24864/files - new: https://git.openjdk.org/jdk/pull/24864/files/2483992f..3d7a921a Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=24864&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24864&range=01-02 Stats: 44 lines in 1 file changed: 0 ins; 3 del; 41 mod Patch: https://git.openjdk.org/jdk/pull/24864.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24864/head:pull/24864 PR: https://git.openjdk.org/jdk/pull/24864
