[jdk11u-dev] RFR: 8273026: Slow LoginContext.login() on multi threading application [v4]

[Larry-N]

> Backport of performance enhancement. Tested with tier-2.

Larry-N has updated the pull request incrementally with one additional commit since the last revision:

  Review notes

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Changes:
  - all: https://git.openjdk.java.net/jdk11u-dev/pull/572/files
  - new: https://git.openjdk.java.net/jdk11u-dev/pull/572/files/98ea1b8d..8993e536

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=572&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=572&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/572.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/572/head:pull/572

PR: https://git.openjdk.java.net/jdk11u-dev/pull/572