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  1. MariaDB Server
  2. MDEV-16159

Use atomic memory access for purge_sys

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      This refactoring is motivated by MDEV-13987 and MDEV-11802.

      The variables purge_sys.state and purge_sys.running are sometimes being read without proper protection, and sometimes read while unnecessarily holding purge_sys.latch exclusively. It is cleaner to use a combination of purge_sys.latch and atomic memory access for writes, so that reads can use either protection.

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              marko Marko Mäkelä
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