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fuchsia / third_party / rust / 2ad5f8607d0e192b60b130e5cc416b477b351c18
commit2ad5f8607d0e192b60b130e5cc416b477b351c18[log] [tgz]
authorbors <bors@rust-lang.org>Sat May 03 00:24:14 2025 +0000
committerbors <bors@rust-lang.org>Sat May 03 00:24:14 2025 +0000
tree78b2124065aff2dd0e8aa6ce263c6f736b1724ea
parent2d5ffc513f1c56b7bc95bacb2519705096e8cc2b [diff]
parent578ea26b8fdf67c830b8991051c1840ff0846e33 [diff]
Auto merge of #140442 - osiewicz:collector-walk-less-fine-grained-locking, r=wesleywiser

mono collector: Reduce # of locking while walking the graph

While profiling Zed's dev build I've noticed that while most of the time `upstream_monomorphizations` takes a lot of time in monomorpization_collector, in some cases (e.g. build of `editor` itself) the rest of monomorphization_collector_graph_walk dominates it. Most of the time is spent in collect_items_rec.

This PR aims to reduce the number of locks taking place; instead of locking output MonoItems once per children of current node, we do so once per *current node*. We also get to reuse locks for mentioned and used items. While this commit does not reduce Wall time of Zed's build, it does shave off CPU time (measured with `cargo build -j1`) from 48s to 47s. I've also tested it with parallel frontend against Zed and ripgrep and found no regressions.
tree: 78b2124065aff2dd0e8aa6ce263c6f736b1724ea
  1. .github/
  2. compiler/
  3. library/
  4. LICENSES/
  5. src/
  6. tests/
  7. .clang-format
  8. .editorconfig
  9. .git-blame-ignore-revs
  10. .gitattributes
  11. .gitignore
  12. .gitmodules
  13. .ignore
  14. .mailmap
  15. bootstrap.example.toml
  16. Cargo.lock
  17. Cargo.toml
  18. CODE_OF_CONDUCT.md
  19. configure
  20. CONTRIBUTING.md
  21. COPYRIGHT
  22. INSTALL.md
  23. LICENSE-APACHE
  24. license-metadata.json
  25. LICENSE-MIT
  26. README.md
  27. RELEASES.md
  28. REUSE.toml
  29. rust-bors.toml
  30. rustfmt.toml
  31. triagebot.toml
  32. x
  33. x.ps1
  34. x.py
README.md

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