This was difficult to observe in practice, as it required a combination
of two unlikely things:
- an `async` function with no awaits
- a custom Zone with side-effecting scheduleMicrotask callback
The new implementation matches dart2js and the Dart VM's behavior.
Change-Id: I4ff275f37aa93d23643481f00c33aeacb7138b01
Reviewed-on: https://dart-review.googlesource.com/58980
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Vijay Menon <vsm@google.com>
Refactors async* implementation class to dart:async and ports it back to
Dart. Improves `await` to avoid zone registration at each await.
Change-Id: I15cac2a40bd56269c8ade1dc0810792c23459ef5
Reviewed-on: https://dart-review.googlesource.com/59260
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Vijay Menon <vsm@google.com>
This uses optional new/const and `=` in named argument defaults.
All changes are automated, except for:
- utils/dartdevc/BUILD.gn: run DDC build scripts with --preview-dart-2
- pkg/dev_compiler/tool/patch_sdk.dart: add a TODO that Analyzer doesn't
supporting implicit const in libraries.dart
- pkg/dev_compiler/tool/input_sdk/libraries.dart: was not formatted due
to the aforementioned Analyzer bug
- tools/bots/test_matrix.json: run DDC sourcemap suite in Dart 2 mode
- pkg/pkg.status: skip pkg/dev_compiler if running in Dart 1 mode
Change-Id: I9b80ccba0c2cc7b66efc662a0b16562e3660aee3
Reviewed-on: https://dart-review.googlesource.com/60402
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
This no longer fails on a bogus error (setting a stack on a primitive):
main() async => throw "hi";
Doesn't come up in tests as that path (rethrow) is only exercised for unhandled exceptions.
Change-Id: I69bcf8c1c6a0cf8841c626594f95c48114ae5aaa
Reviewed-on: https://dart-review.googlesource.com/48463
Commit-Queue: Vijay Menon <vsm@google.com>
Reviewed-by: Jenny Messerly <jmesserly@google.com>
This disables most runtime features of dart:isolate, similar to dart:io.
For now, this supports `new ReceivePort()` and `ReceivePort.close` as
those are used by async tests to keep the Dart VM alive. Those are
no-ops in DDC. Also removes most of dart:_isolate_helper, except for
the JS API that's used to bootstrap DDC `main()`.
Change-Id: I84eab6cd39d05a70a6afe982e952076ddaaa8c0f
Reviewed-on: https://dart-review.googlesource.com/45754
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Vijay Menon <vsm@google.com>
This is for compatibility with Kernel, as well as fixing several bugs,
and generally being a more robust architecture.
This may also perform better than the current design.
Notable fixes include several issues around deferred classes.
Change-Id: I1b6f44ebdf6304b10b47d19026156a25e04146ef
Reviewed-on: https://dart-review.googlesource.com/16337
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Other improvements:
* avoids an extra intermediate future in `async`, and unnecessary type tests
* uses optimized type tests instead of older isSubtypeOf
* avoids an extra closure for async/async*
* avoids Function.apply for async/async*/sync*
* avoids an extra cosure for sync* if the arguments are not modified
Change-Id: I897708387fce59a97696f05b01cc668f1043fe5c
Reviewed-on: https://dart-review.googlesource.com/16332
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
When I'm looking at the dynamic call profiles of an internal app test,
I see a bunch coming from the SDK itself. In fact, the top five most
common dynamic call sites are in the SDK.
This fixes four of them. (The fifth is in runUnary() in Zone, and I
don't think can be made typed yet.)
R=vsm@google.com
Review URL: https://codereview.chromium.org/2542723003 .
it's all under input_sdk now:
lib -> the lib folder
private -> the dart:_* libs
patch -> the files with @patch
I imagine we'll try and focus changes on the last two
Jenny Messerly