Norman Maurer eb1c97b3b9 [#4110] Correct javadocs of MpscLinkedQueue
Motivation:

The javadocs are incorrect and so give false impressions of use-pattern.

Modifications:

- Fix javadocs of which operations are allowed from multiple threads concurrently.
- Let isEmpty() work concurrently.

Result:

Correctly document usage-patterns.
2015-08-27 09:09:28 +02:00
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