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dart / sdk / bdb782ba8fea7f7fd140ab0e57c598c354b3a550
commitbdb782ba8fea7f7fd140ab0e57c598c354b3a550[log] [tgz]
authorNate Biggs <natebiggs@google.com>Fri Nov 18 21:40:38 2022 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Nov 18 21:40:38 2022 +0000
tree992b977b72f8d51325d53f170fcac7c68d2b9775
parentb8d85b7ad36fe5f6dc7a7dd808b15fa97f74e083 [diff]
[dart2js] Add mmap-based read to dart2js for linux systems.

Based on Martin Kustermann and Slava Egorov's versions of memory mapped views.

This feature is disabled by default and even if the flag is enabled, it will fall back to the current strategy if the platform is not Linux or the new strategy fails.

Phase 1 stats from 50 runs:
---Before---
Max memory: 8786.766
Median memory: 8116.242
Average memory: 8327.404081632654
---After---=
Max memory: 7805.691
Median memory: 7137.203
Average memory: 7305.301122448978

Phase 2 stats from 50 runs:
---Before---
Max memory: 9273.359
Median memory: 8742.133
Average memory: 8868.929124999999
---After---
Max memory: 9409.672
Median memory: 7500.148
Average memory: 7650.154000000001

Phase 3b stats from 50 runs:
---Before---
Max memory: 8979.367
Median memory: 8705.215
Average memory: 8703.982755102037
---After---
Max memory: 7809.898
Median memory: 7455.609
Average memory: 7449.96102040816


Change-Id: I73d73cfb26218399367c72c886f247836b89925c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/269640
Commit-Queue: Nate Biggs <natebiggs@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
9 files changed
tree: 992b977b72f8d51325d53f170fcac7c68d2b9775
  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. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. OWNERS
  30. PATENT_GRANT
  31. PRESUBMIT.py
  32. README.dart-sdk
  33. README.md
  34. sdk_args.gni
  35. SECURITY.md
  36. 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.