On Thu, 28 Apr 2022 00:49:03 GMT, Leonid Mesnik <lmes...@openjdk.org> wrote:
>> test/hotspot/jtreg/serviceability/dcmd/vm/ClassLoaderStatsTest.java line 178: >> >>> 176: static { >>> 177: try { >>> 178: // Create a hidden class, keep reference in the case if GC >>> happens >> >> "Create a hidden class. Keep a reference in case a GC happens." >> >> I hadn't noticed the original comment when first suggesting making the Class >> reference static. I wonder what was meant by "non-strong class". > > This line added by 8238358: Implementation of JEP 371: Hidden Classes which > has many co-authors. Hope someone could provide an explanation during this > review. > > It might be possible that the goal was to verify that VM.classloader_stats > provide might provide info for non-reachable clasees. However it makes test > to fragile, since can't block class unloading now. Yes, that seems to be the case, and you are right that it is not something that is safe to assume. ------------- PR: https://git.openjdk.java.net/jdk/pull/8438