[DI] Refactor mutex code guarding race condition

[watson]

What does this PR do?

When adding, removing or modifying a breakpoint there can be a race condtion if two Remove Config configs are received in quick succession. We already have a mutex to guard against this, but the code was in need of a refactor because:

1. We had duplicate mutex code in two different files, where only one was needed
2. We couldn't easily test the main mutex code in a unit test as it was added in the calling file and therefore not isolated to the function containing the race condition.

This PR fixes these issues by refactoring the code.

Motivation

Plugin Checklist

• Unit tests.
• Integration tests.
• Benchmarks.
• TypeScript definitions.
• TypeScript tests.
• API documentation.
• CI jobs/workflows.

Additional Notes

This PR contains a lot of white space changes. Use "Hide whitespace" when reviewing for a better diff.

[watson]

• [DI] Refactor mutex code guarding race condition #5728 👈 (View in Graphite)
• [DI] Fix race condition when applying probe at app boot #5698 : 1 other dependent PR (#5710 )
• [DI] Add debug logs when starting/stopping the CDP session #5694
• master

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[github-actions]

Overall package size

Self size: 9.41 MB
Deduped: 103.44 MB
No deduping: 103.96 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/libdatadog | 0.5.1 | 29.73 MB | 29.73 MB | | @datadog/native-appsec | 8.5.2 | 19.33 MB | 19.34 MB | | @datadog/pprof | 5.8.0 | 12.55 MB | 12.92 MB | | @datadog/native-iast-taint-tracking | 4.0.0 | 11.72 MB | 11.73 MB | | @opentelemetry/core | 1.30.1 | 908.66 kB | 7.16 MB | | protobufjs | 7.4.0 | 2.77 MB | 5.42 MB | | @datadog/wasm-js-rewriter | 4.0.1 | 2.85 MB | 3.58 MB | | @datadog/native-metrics | 3.1.1 | 1.02 MB | 1.43 MB | | @opentelemetry/api | 1.8.0 | 1.21 MB | 1.21 MB | | import-in-the-middle | 1.13.1 | 117.64 kB | 839.26 kB | | source-map | 0.7.4 | 226 kB | 226 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | lru-cache | 7.18.3 | 133.92 kB | 133.92 kB | | pprof-format | 2.1.0 | 111.69 kB | 111.69 kB | | @datadog/sketches-js | 2.1.1 | 109.9 kB | 109.9 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | ignore | 5.3.2 | 53.63 kB | 53.63 kB | | istanbul-lib-coverage | 3.2.0 | 29.34 kB | 29.34 kB | | rfdc | 1.4.1 | 27.15 kB | 27.15 kB | | @isaacs/ttlcache | 1.4.1 | 25.2 kB | 25.2 kB | | dc-polyfill | 0.1.8 | 25.08 kB | 25.08 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | shell-quote | 1.8.2 | 23.54 kB | 23.54 kB | | limiter | 1.1.5 | 23.17 kB | 23.17 kB | | retry | 0.13.1 | 18.85 kB | 18.85 kB | | semifies | 1.0.0 | 15.84 kB | 15.84 kB | | jest-docblock | 29.7.0 | 8.99 kB | 12.76 kB | | crypto-randomuuid | 1.0.0 | 11.18 kB | 11.18 kB | | ttl-set | 1.0.0 | 4.61 kB | 9.69 kB | | mutexify | 1.4.0 | 5.71 kB | 8.74 kB | | path-to-regexp | 0.1.12 | 6.6 kB | 6.6 kB | | koalas | 1.0.2 | 6.47 kB | 6.47 kB | | module-details-from-path | 1.0.3 | 4.47 kB | 4.47 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.08%. Comparing base (0c27678) to head (1b4e0c7).
Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5728      +/-   ##
==========================================
+ Coverage   78.69%   79.08%   +0.38%     
==========================================
  Files         500      517      +17     
  Lines       22978    23649     +671     
==========================================
+ Hits        18082    18702     +620     
- Misses       4896     4947      +51     

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[datadog-datadog-prod-us1]

Datadog Report

Branch report: watson/DEBUG-3872/clean-up-mutex-code
Commit report: 10b7006
Test service: dd-trace-js-integration-tests

✅ 0 Failed, 986 Passed, 0 Skipped, 15m 25.38s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-05-21 09:21:30

Comparing candidate commit 1b4e0c7 in PR branch watson/DEBUG-3872/clean-up-mutex-code with baseline commit 0c27678 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1268 metrics, 55 unstable metrics.

The base branch was changed.