On Thu, 11 Jul 2024 15:28:37 GMT, Aleksey Shipilev <sh...@openjdk.org> wrote:
> [JDK-8240696](https://bugs.openjdk.org/browse/JDK-8240696) added the native > method for `Reference.clear`. The original patch skipped intrinsification of > this method, because we thought `Reference.clear` is not on a performance > sensitive path. However, it shows up prominently on simple benchmarks that > touch e.g. `ThreadLocal` cleanups. See the bug for an example profile with > `RRWL` benchmarks. > > Additional testing: > - [x] Linux x86_64 server fastdebug, `all` > - [ ] Linux AArch64 server fastdebug, `all` The reason we did not do this before is that this is not a strong reference store. Strong reference stores with a SATB collector will keep the referent alive, which is typically the exact opposite of what a user wants when they clear a Reference. ------------- PR Comment: https://git.openjdk.org/jdk/pull/20139#issuecomment-2225266939
