RTEMS | Improve event record handling (!282)

[Gedare Bloom (@gedare)]

Gedare Bloom commented on a discussion: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/282#note_114795


He added a patch ("record: Use only related uptime low/high events") that I Assumed fixed that corner case. It appears to be a low/high timer read sync issue where the High is read during an overflow. He added a simple 1-bit state machine to make sure the High is only read if the Low was also read since the previous read of High.

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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/282#note_114795
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