On Tue, 7 Dec 2021 10:42:50 GMT, Roman Kennke <rken...@openjdk.org> wrote:
>> The caches in ObjectStreamClass basically map WeakReference<Class> to >> SoftReference<ObjectStreamClass>, where the ObjectStreamClass also >> references the same Class. That means that the cache entry, and thus the >> class and its class-loader, will not get reclaimed, unless the GC determines >> that memory pressure is very high. >> >> However, this seems bogus, because that unnecessarily keeps ClassLoaders and >> all its classes alive much longer than necessary: as soon as a ClassLoader >> (and all its classes) become unreachable, there is no point in retaining the >> stuff in OSC's caches. >> >> The proposed change is to use WeakReference instead of SoftReference for the >> values in caches. >> >> Testing: >> - [x] tier1 >> - [x] tier2 >> - [x] tier3 >> - [ ] tier4 > > Roman Kennke has updated the pull request incrementally with one additional > commit since the last revision: > > Add improved test by @plevart This is a P4 bug. If the priority is correct, it does not meet the criteria to get it into JDK 18 during RDP1, as indicated in [JEP 3](https://openjdk.java.net/jeps/3). If this is objectively a P3 bug, and really does need to go into JDK 18, then you will need to close this PR and open a new pull request in the jdk18 repo. ------------- PR: https://git.openjdk.java.net/jdk/pull/6375
