RFR: JDK-8300098 : java/util/concurrent/ConcurrentHashMap/ConcurrentAssociateTest.java fails with internal timeout when executed with TieredCompilation1/3

[Viktor Klang]

The proposed fix by @DougLea ensures that the state transition into waiting is retried in the cases where a previous waiter isn't making progress and a new waiter goes into waiting.

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Commit messages:
 - JDK-8300098 : java/util/concurrent/ConcurrentHashMap/ConcurrentAssociateTest.java fails with internal timeout when executed with TieredCompilation1/3

Changes: https://git.openjdk.org/jdk/pull/12319/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12319&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8300098
  Stats: 12 lines in 1 file changed: 2 ins; 2 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/12319.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12319/head:pull/12319

PR: https://git.openjdk.org/jdk/pull/12319