2948917a47
Relands https://github.com/flutter/flutter/pull/159756. The original caused some stderr because 1. the configurable `ndkVersion` value that AGP provides used to be null by default. 2. Now it is not, instead it has a default value 3. `integration_test` doesn't actually use the NDK, but default for `integration_test` was higher that `flutter.ndkVersion` 4. We have code that checks if a plugin uses a higher ndk version and tells you to consider upgrading https://github.com/flutter/flutter/blob/master/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy#L921 This reverts the revert, and then aligns `integration_test`'s NDK version (which again, it doesn't actually use, so I'm not too concerned about the downgrade) with `flutter.ndkVersion`. It also starts using the `flutter.min/compile/ndkVersion` values in `integration_test`, which was unrelated to the original pr. Can remove if you think it should land separately. ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: Gray Mackall <mackall@google.com>
microbenchmarks
To run these benchmarks on a device, first run flutter logs in one
window to see the device logs, then, in a different window, run:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart
To run a subset of tests:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=tests=foundation/change_notifier_bench.dart,language/sync_star_bench.dart
To specify a seed value for shuffling tests:
flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=seed=12345
The results should be in the device logs.
Avoid changing names of the benchmarks
Each microbenchmark is identified by a name, for example,
"catmullrom_transform_iteration". Changing the name passed to BenchmarkResultPrinter.addResult
will effectively remove the old benchmark and create a new one,
losing the historical data associated with the old benchmark in the process.