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dart / sdk.git / 759caec558cc99a93565e930dee585562f0106bc
commit759caec558cc99a93565e930dee585562f0106bc[log] [tgz]
authorMartin Kustermann <kustermann@google.com>Wed Dec 02 18:14:18 2020 +0000
committercommit-bot@chromium.org <commit-bot@chromium.org>Wed Dec 02 18:14:18 2020 +0000
tree1b819e40a12c0bd5f258230936116cac3e5ad766
parent8cba879f46cb6626f10c1b570f0cf826e7ffd7a6 [diff]
[vm/concurrency] Add patchable_call_mutex and take it in miss handlers

We serialize all changes to patchable call state to ensure we always
make progress (e.g. transition from Monomorphic -> Polymorphic).

Only if the miss handler actually needs to patch the patchable call do
we stop mutators - if it only updates ICData we don't have to do that.
=> In the future we might introduce a more clever mechanism to avoid
   stopping mutators.

The CL also moves some locks from Isolate to IsolateGroup to ensure
all mutators use the same lock, since they operate on shared data
structures.

Issue https://github.com/dart-lang/sdk/issues/36097

TEST=Existing isolate tests that --enable-isolate-groups.

Change-Id: I4a11a8b8bb65581c6aba11cdf73acdea0f24a502
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/174469
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
6 files changed
tree: 1b819e40a12c0bd5f258230936116cac3e5ad766
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. client/
  6. docs/
  7. pkg/
  8. runtime/
  9. samples/
  10. samples-dev/
  11. samples_2/
  12. sdk/
  13. tests/
  14. third_party/
  15. tools/
  16. utils/
  17. .clang-format
  18. .gitattributes
  19. .gitconfig
  20. .gitignore
  21. .gn
  22. .mailmap
  23. .packages
  24. .style.yapf
  25. .vpython
  26. AUTHORS
  27. BUILD.gn
  28. CHANGELOG.md
  29. codereview.settings
  30. CONTRIBUTING.md
  31. DEPS
  32. LICENSE
  33. PATENT_GRANT
  34. PRESUBMIT.py
  35. README.dart-sdk
  36. README.md
  37. sdk_args.gni
  38. WATCHLISTS
README.md

Dart

A client-optimized language for fast apps on any platform

Dart is:

  • Optimized for UI: Develop with a programming language specialized around the needs of user interface creation

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app

  • Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web

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, getting started, and more.

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

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 on our wiki.

Contributing to Dart

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

You can also contribute patches, as described in Contributing.