Find a file
Danny Tuppeny 4d1b418230 [dds/dap] Fix breakpoint resolution races when there are multiple isolates
When there are multiple isolates, we may get breakpoint responses/events like this:

- Request/Response to add breakpoint to Isolate 1
- Request/Response to add breakpoint to Isolate 2
- BreakpointAdded for Isolate 1
- BreakpointResolved for Isolate 1
- BreakpointAdded for Isolate 2

Because Isolate 2 did not load the script, the last breakpoint was never resolved. However because the breakpoint ID matched, we would forward this event to the client and un-resolve the previously resolved breakpoint. This would result in odd behaviour in VS Code.

Additionally, the VM may return the same BM breakpoint ID for what the client thinks are two breakpoints (they are on different lines, but resolve to the same location) so when we get a resolved breakpoint, we need to handle both:

- Client breakpoints that have already been transmitted
- Future client breakpoints that may resolve to this same VM breakpoint

The previous code assumed that a BreakpointResolved event could be handled just once. Either for an existing breakpoint, or a future one.

This change swaps from storing queued events to storing the resolution information for each breakpoint, and it does this even if there was an existing breakpoint (in case the breakpoint is reused in future).

Fixes at least some of https://github.com/Dart-Code/Dart-Code/issues/4598

Change-Id: I53b92debfaa0c8f538dc8d67966854bb89634708
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/311480
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
2023-06-27 14:54:10 +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 actions/checkout from 3.5.2 to 3.5.3 2023-06-13 08:56:54 +00:00
benchmarks [benchmarks] Update legacy benchmarks to use the List.filled constructor 2023-05-22 14:14:42 +00:00
build [fuchsia] Plumbing for the VMEX resource. 2023-06-20 19:28:18 +00:00
docs Spelling pkg analyzer lib 2023-01-25 14:08:27 +00:00
pkg [dds/dap] Fix breakpoint resolution races when there are multiple isolates 2023-06-27 14:54:10 +00:00
runtime [vm] Rename tests causal_stacks -> awaiter_stacks and improve harness. 2023-06-27 11:50:32 +00:00
samples [test] Introduce status variable $simulator, and fix some cases missing simarm_x64. 2023-04-04 03:10:26 +00:00
sdk [dart:html] Move NullWindowException to implementation 2023-06-26 22:58:08 +00:00
tests [gardening] Add LibTest/core/List/List_all_t02 to skipped slow tests. 2023-06-27 14:16:40 +00:00
third_party [pkgs/native] Windows support + CI 2023-04-28 13:31:10 +00:00
tools [infra] Fix goma detection on Windows 2023-06-27 10:31:50 +00:00
utils [build] Collapse now-identical application_snapshot and kernel_application_snapshot. 2023-06-23 21:58:30 +00:00
.clang-format
.gitattributes
.gitconfig
.gitignore [pkg][vm] Native Assets builder 2023-05-15 13:49:30 +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
.vpython
AUTHORS Simplify the license situation 2022-09-14 21:06:22 +00:00
BUILD.gn [dart2wasm] Add option and target for stringref. 2023-06-21 14:25:38 +00:00
CHANGELOG.md [dart:html] Move NullWindowException to implementation 2023-06-26 22:58:08 +00:00
codereview.settings [infra] Default presubmits to use python3 2021-08-24 08:20:47 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md 2023-05-16 13:04:13 +00:00
DEPS Pull in a new version of unified_analytics and update server 2023-06-27 13:35:08 +00:00
LICENSE
OWNERS [owners] update the top-level owners file 2022-11-11 21:03:52 +00:00
PATENT_GRANT
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.code-workspace Add an explicit Visual Studio Code workspace 2023-05-17 23:08:19 +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 Add a watchlist entry for changes to _fe_analyzer_shared 2023-03-31 13:59:27 +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.