statistics: handle lock and unlock operations correctly

[Rustin170506]

What problem does this PR solve?

Issue Number: ref #55906

Problem Summary:

What changed and how does it work?

This PR is based on #56437

Handle the lock and unlock operations correctly.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov]

Codecov Report

Attention: Patch coverage is 63.27044% with 292 lines in your changes missing coverage. Please review.

Project coverage is 75.3543%. Comparing base (74034d4) to head (602f8ef).

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56454        +/-   ##
================================================
+ Coverage   73.3645%   75.3543%   +1.9897%     
================================================
  Files          1624       1647        +23     
  Lines        448069     456677      +8608     
================================================
+ Hits         328724     344126     +15402     
+ Misses        99207      91253      -7954     
- Partials      20138      21298      +1160     

Flag	Coverage Δ
integration	50.2229% <2.7673%> (?)
unit	72.5053% <63.2704%> (+0.0416%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	52.3088% <ø> (+6.7957%)	⬆️