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Ran 30 Jul 2020 01:51PM UTC

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Committed 30 Jul 2020 01:22PM UTC coverage: 86.013% (-0.2%) from 86.217%

Job # 700.1

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push

travis-ci

Committed by

web-flow

Commit Message

MpscBlockingConsumerArrayQueue poll with timeout fix (#316)

MpscBlockingConsumerArrayQueue poll with timeout fix

Previously the following sequence was possible:
```
  Consumer                            Provider

  poll(timeout)
                                      offerAndWakeup()
  time out
                                      soRefElement(, offset,)
  consume from offset
  offset -> offset'
  poll()
                                      soBlocked(null)
                                      unpark(consumerThread)
  // Spin for ever
  spinWaitForElement(, offset')
```
Issue resolved by more strictly enforcing consumer invariants when exiting the parked state.

Co-authored-by: nickhill <nickhill@us.ibm.com>
Co-authored-by: Nitsan <nwakart@gmail.com>

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