Ar/psr 11 racingoncelock

[allanbrondum]

Purpose

_Describe the purpose of the pull request, link to issue describing the problem, etc.

Changes

_Describe the changes that were needed.

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.80%. Comparing base (acc2063) to head (dbde4f1).
⚠️ Report is 43 commits behind head on ar/psr-11-oncelock_remove-read-closure-from-lfmb-tree-2.

Additional details and impacted files

@@                                     Coverage Diff                                     @@
##           ar/psr-11-oncelock_remove-read-closure-from-lfmb-tree-2    #1629      +/-   ##
===========================================================================================
- Coverage                                                    63.72%   62.80%   -0.93%     
===========================================================================================
  Files                                                          355      322      -33     
  Lines                                                        70899    66864    -4035     
  Branches                                                      3024     3031       +7     
===========================================================================================
- Hits                                                         45182    41995    -3187     
+ Misses                                                       22693    21838     -855     
- Partials                                                      3024     3031       +7     

see 41 files with indirect coverage changes