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dart / sdk.git / 0e815baac61b8052d34d83950256f261a8f82156
commit0e815baac61b8052d34d83950256f261a8f82156[log] [tgz]
authorDaco Harkes <dacoharkes@google.com>Tue Jul 27 10:34:47 2021 +0000
committercommit-bot@chromium.org <commit-bot@chromium.org>Tue Jul 27 10:34:47 2021 +0000
tree2a4ccbc5d31bf1ebd9ac64df11455c2515bb777e
parent87eb37a19a81c3859d7f0a7587298273b33360d7 [diff]
[vm] Reorder fields in LinkedHashBase

Split off https://dart-review.googlesource.com/c/sdk/+/203765 to make
that diff smaller.

Serializing the index incurs a large size penalty to snapshots. Rather
than serializing, we reconstruct the index based on the hashes that we
do serialize for all canonical objects. (Reconstructing the index is a
relatively cheap operation, recomputing the hashes is not.)

Note that to_snapshot is currently dead code, because we never serialize
non-const maps and sets in clustered snapshots.

Of course we do exercise the layout of the maps and sets itself.

Bug: https://github.com/dart-lang/sdk/issues/45908

TEST=The whole test suite including all map and set tests.

Change-Id: If54117497029e4da212c702a76c82de6d1531092
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/208086
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
2 files changed
tree: 2a4ccbc5d31bf1ebd9ac64df11455c2515bb777e
  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, 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.