Refactor `RetainedHeapLimiter` into (i) a general purpose mechanism for noticing memory pressure and (ii) a use of that mechanism to achieve the actual goal of `RetainedHeapLimiter`.

This accomplishes two things:

* Strict decrease in code complexity.
  * By using a custom `BlazeModule`, we can get rid of the special-casing in `BlazeCommandDispatcher` and `BlazeRuntime`.
  * The new `RetainedHeapLimiter` is simpler since the code for noticing memory pressure has been factored out. Check out the unit tests :)
* Opens the door for new functionality triggered by memory pressure. I will be adding one myself in the very near future. And I can imagine other pieces of functionality we can add too.

PiperOrigin-RevId: 417856795
10 files changed
tree: 0ce33676e97f96b7747af94ea73929d0e6ab60df
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODE_OF_CONDUCT.md
  15. CODEBASE.md
  16. CODEOWNERS
  17. combine_distfiles.py
  18. combine_distfiles_to_tar.sh
  19. compile.sh
  20. CONTRIBUTING.md
  21. CONTRIBUTORS
  22. distdir.bzl
  23. distdir_deps.bzl
  24. ISSUE_TEMPLATE.md
  25. LICENSE
  26. MODULE.bazel
  27. README.md
  28. SECURITY.md
  29. WORKSPACE
  30. WORKSPACE.bzlmod
README.md

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