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dart / sdk / c47a8b0adaac152d232e4d2d45b0e0c443765302
commitc47a8b0adaac152d232e4d2d45b0e0c443765302[log] [tgz]
authorAlexander Aprelev <aam@google.com>Fri Jul 11 07:23:10 2025 -0700
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Jul 11 07:23:10 2025 -0700
treea7706ea062f8ccd8b58208675d79669ecc80a040
parent3e462c1343f58b271bc880b6093d9c30f41a9c04 [diff]
[vm/shared] Restore fast-path for RunWithStoppedMutators.

The fastpath was removed in https://dart.googlesource.com/sdk.git/+/bd0d029792bce2bc4b0b7fa1659d24350266b3d1 because the fastpath didn't take into account isolategroup-shared mutators and holding an active_mutators_monitor_ caused tsan-identified potential circular locking. Removal actually resulted in regressions in flutter reassemble benchmarks.

This PR restores fastpath and instead of holding active_mutators_monitor_ it just keeps track of isolategroup-shared mutators counter, which this PR adds as well.

BUG=https://github.com/flutter/flutter/issues/171722
TEST=ci, manual patch into flutter and run reload

Change-Id: I00e01d930788697c8ae91fda73b09e013e718fad
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/439802
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
3 files changed
tree: a7706ea062f8ccd8b58208675d79669ecc80a040
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .style.yapf
  21. AUTHORS
  22. BUILD.gn
  23. CHANGELOG.md
  24. codereview.settings
  25. CONTRIBUTING.md
  26. DEPS
  27. LICENSE
  28. OWNERS
  29. PATENT_GRANT
  30. PRESUBMIT.py
  31. pubspec.yaml
  32. README.dart-sdk
  33. README.md
  34. sdk.code-workspace
  35. sdk_args.gni
  36. sdk_packages.yaml
  37. SECURITY.md
  38. WATCHLISTS
README.md

Dart

An approachable, portable, and productive language for high-quality apps on any platform

Dart is:

  • Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.

  • Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

  • Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.

  • Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

Dart platforms illustration

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, and to find codelabs.

Browse pub.dev for more packages and libraries contributed by the community and the Dart team.

Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents in our repo at docs.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

Roadmap

Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.