Find a file
Daco Harkes b1e59721d4 Revert "[vm] Remove tcmalloc and malloc profiler."
This reverts commit c67fac9cb4.

Reason for revert: Regresses `dart:io` performance and causes
failures.
https://github.com/dart-lang/sdk/issues/51639

Original change's description:
> [vm] Remove tcmalloc and malloc profiler.
>
> The standalone VM originally began statically linking tcmalloc to work around bugs in the system malloc for Fiber. Later it used tcmalloc's hooks to implement a profiler, but this is rarely used since it is only available in debug mode, misses early allocations, and often misses late allocations from an exhausted sample buffer. Removing it altogether avoids build complexity around which combinations of compiler/architecture/sysroot support tcmalloc, and reduces binary size.
>
> TEST=ci
> Change-Id: I4b259e18b82b2d12a2a60962aabf83bd8d997d19
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286120
> Reviewed-by: Ben Konyi <bkonyi@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>

Change-Id: I4395edd6f5bd7e26b4e38f4d931ad2ea67afba18
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286925
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
2023-03-06 10:28:33 +00:00
.dart_tool [infra] re-land work to auto-generate .dart_tool/package_config.json 2022-04-12 17:21:02 +00:00
.github Bump github/codeql-action from 2.2.4 to 2.2.5 2023-02-28 12:08:29 +00:00
benchmarks [benchmarks/ffi] Add @Native calls to FfiCall benchmark 2023-03-02 15:23:16 +00:00
build Reland "[build, vm] Access TLS with less code." 2023-03-02 23:07:16 +00:00
docs Spelling pkg analyzer lib 2023-01-25 14:08:27 +00:00
pkg [cfe] Handle continue to default case 2023-03-06 10:13:31 +00:00
runtime Revert "[vm] Remove tcmalloc and malloc profiler." 2023-03-06 10:28:33 +00:00
samples [samples/ffi] Update sqlite-tutorial 2023-02-21 21:23:43 +00:00
sdk [flip-modifiers]: Reapply "Enforce current library restrictions." 2023-03-03 09:37:38 +00:00
tests [flip-patterns] Update language/constants_2018/equals_test.dart for primitive equality. 2023-03-03 23:39:37 +00:00
third_party Revert "[vm] Remove tcmalloc and malloc profiler." 2023-03-06 10:28:33 +00:00
tools Revert "[vm] Remove tcmalloc and malloc profiler." 2023-03-06 10:28:33 +00:00
utils [dart2js] Update build infrastructure to move Dart2JS onto sound null safety. 2023-02-22 17:19:43 +00:00
.clang-format
.gitattributes [web] rename suite dart2js -> web. 2021-02-04 23:11:32 +00:00
.gitconfig [infra] Add documentation to .gitconfig 2018-06-11 18:24:16 +00:00
.gitignore [test_runner] Create --write-logs dir, add default dir to .gitignore 2022-11-15 09:59:08 +00:00
.gn [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00
.mailmap Fixed various typos in a lot of files 2022-07-25 12:21:59 +00:00
.style.yapf Mass format python with yapf 2019-08-05 20:34:31 +00:00
.vpython [infra] Add .vpython spec to fix gsutil on the bots (#31065) 2018-10-11 15:11:35 +00:00
AUTHORS Simplify the license situation 2022-09-14 21:06:22 +00:00
BUILD.gn Roll Fuchsia SDK to 7b3b23b2c0da59b3aceab6c49fbe7d9ed34d7382. 2023-02-09 22:43:36 +00:00
CHANGELOG.md Roll dart_style into the SDK. 2023-03-03 18:53:20 +00:00
codereview.settings [infra] Default presubmits to use python3 2021-08-24 08:20:47 +00:00
CONTRIBUTING.md Add more details to contributing docs 2022-03-16 07:56:58 +00:00
DEPS Revert "[vm] Remove tcmalloc and malloc profiler." 2023-03-06 10:28:33 +00:00
LICENSE Update LICENSE 2021-04-08 07:57:10 +00:00
OWNERS [owners] update the top-level owners file 2022-11-11 21:03:52 +00:00
PATENT_GRANT Rename patent file 2019-08-16 12:03:17 +00:00
PRESUBMIT.py Add year checking in PRESUBMIT.py 2023-02-01 16:31:32 +00:00
README.dart-sdk Fix README.dart-sdk file to reflect current contents of the SDK 2023-02-02 03:10:09 +00:00
README.md master => main 2021-09-10 08:02:49 +00:00
sdk_args.gni Fix typos 2022-06-15 11:08:28 +00:00
SECURITY.md Add link to published advisories 2022-02-08 19:45:07 +00:00
WATCHLISTS Create a watchlist for analyzer 2023-02-08 22:21:49 +00:00

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.