[jdk17u-dev] RFR: 8320602: Lock contention in SchemaDVFactory.getInstance()

[Matthias Baesken]

8320602: Lock contention in SchemaDVFactory.getInstance()

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Commit messages:
 - Backport 0678253bffca91775d29d2942f48c806ab4d2cab

Changes: https://git.openjdk.org/jdk17u-dev/pull/2706/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2706&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320602
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2706.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2706/head:pull/2706

PR: https://git.openjdk.org/jdk17u-dev/pull/2706