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dart / sdk.git / 2282387a5b106f1a637e99a82a4e446549290fe8
commit2282387a5b106f1a637e99a82a4e446549290fe8[log] [tgz]
authorSlava Egorov <vegorov@google.com>Fri Nov 21 05:34:55 2025 -0800
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Nov 21 05:34:55 2025 -0800
treea8663abf51f58a3be5d2de9b1282b961afa1b9c7
parent991c48f6899db2da03ff6a7f1fcba9e4ffced5ad [diff]
[vm] Fix profiler in PRODUCT mode.

* Make sure to start and stop profiler as mutator pauses and resumes.
* Allow profiler to call Code::GetPrologOffset without crashing
* Make sure to emit mapping with id 0 into the perfetto output if
  necessary, otherwise Perfetto UI can't load the profile

The last item seems a bug in Perfetto UI because 0 is supposed
to mean "value not set".

TEST=tested by running _perf_witness tests

Change-Id: I57578ba3efafd2aaf83c2c41b0e0b1f36a6a6964
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/459744
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
7 files changed
tree: a8663abf51f58a3be5d2de9b1282b961afa1b9c7
  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.