RFR: 8309688: Data race on java.io.ClassCache$CacheRef.strongReferent

[Man Cao]

Hi all,

Could anyone review this small fix for a data race in java.io.ClassCache$CacheRef? This fix makes the code safer by making the code data-race-free.

-------------

Commit messages:
 - 8309688: Data race on java.io.ClassCache.strongReferent

Changes: https://git.openjdk.org/jdk/pull/14386/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14386&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309688
  Stats: 11 lines in 1 file changed: 1 ins; 5 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/14386.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14386/head:pull/14386

PR: https://git.openjdk.org/jdk/pull/14386