RFR: 8345954: Revisit Class Initializers and Locking in X509TrustManagerImpl

Thu Jan 22 00:27:48 UTC 2026

Refactor sun.security.provider.X509Factory cache access to avoid coarse-grained locking and reduce contention during certificate/CRL interning and parsing.

As per request in [the PR](https://github.com/openjdk/jdk/pull/22616#issuecomment-2524971845), re-visit "the initialisation and locking in this area, e.g. addToCache is a static synchronized method so very coarse locking."

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Commit messages:
 - 8345954: Revisit Class Initializers and Locking in X509TrustManagerImpl-switch back to existing helpers
 - 8345954: Revisit Class Initializers and Locking in X509TrustManagerImpl-minor cleanerup
 - Merge branch 'master' into 8345954
 - 8345954: Revisit Class Initializers and Locking in X509TrustManagerImpl

Changes: https://git.openjdk.org/jdk/pull/29181/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29181&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345954
  Stats: 66 lines in 1 file changed: 21 ins; 14 del; 31 mod
  Patch: https://git.openjdk.org/jdk/pull/29181.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29181/head:pull/29181

PR: https://git.openjdk.org/jdk/pull/29181