Google Git
Sign in
chromium / external / github.com / dart-lang / sdk / bc090dc4695dd795d4a923447c3b5cf76384a821
commitbc090dc4695dd795d4a923447c3b5cf76384a821[log] [tgz]
authorMartin Kustermann <kustermann@google.com>Mon Aug 15 09:07:37 2022
committerCommit Bot <commit-bot@chromium.org>Mon Aug 15 09:07:37 2022
tree762f123ccbc8bd53b74ed5c97561a6398161735c
parentb928fd308385fb72677845ec140b81357385240c [diff]
[CFE] Adjust benchmarking script to support scanning based on Utf8BytesScanner

The CFE itself uses [Utf8BytesScanner] in it's normal operation. The
analyzer instead uses [StringScanner].

The performance script used today only measures scanning performance
based on [StringScanner].

=> This CL adds a `scan_bytes` subcommand that will measure scanner
   performance based on bytes (the CFE default mode).

The performance script discovers the files to scan for the benchmark by
using the analyzer to transitively scan/parse files and looking at the
imports. Doing so will - as a side effect- fill
[StringCanonicalizer] with values.

=> This CL cleans the [StringCanonicalizer] cache before doing the
   actual benchmarking.

TEST=ci

Change-Id: I996efe6b3551983df19ed5aad4fc4220c07336cd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255120
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
1 file changed
tree: 762f123ccbc8bd53b74ed5c97561a6398161735c
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. samples-dev/
  10. samples_2/
  11. sdk/
  12. tests/
  13. third_party/
  14. tools/
  15. utils/
  16. .clang-format
  17. .gitattributes
  18. .gitconfig
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .style.yapf
  23. .vpython
  24. AUTHORS
  25. BUILD.gn
  26. CHANGELOG.md
  27. codereview.settings
  28. CONTRIBUTING.md
  29. DEPS
  30. LICENSE
  31. OWNERS
  32. PATENT_GRANT
  33. PRESUBMIT.py
  34. README.dart-sdk
  35. README.md
  36. sdk_args.gni
  37. SECURITY.md
  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, 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 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.