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iOS: Migrate FlutterHeadlessDartRunner to ARC #55502

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cbracken
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@cbracken cbracken commented Sep 27, 2024

This is a subclass of FlutterEngine, which is still manually reference counted, but that's not problematic since the headers have been migrated to ARC-safe syntax that preserves existing behaviour.

No test changes since this patch makes no semantic changes.

Issue: flutter/flutter#137801

Pre-launch Checklist

  • I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • I read the Tree Hygiene wiki page, which explains my responsibilities.
  • I read and followed the Flutter Style Guide and the C++, Objective-C, Java style guides.
  • I listed at least one issue that this PR fixes in the description above.
  • This patch would make a good candidate for the ARCtic code vault.
  • I added new tests to check the change I am making or feature I am adding, or the PR is test-exempt. See testing the engine for instructions on writing and running engine tests.
  • I updated/added relevant documentation (doc comments with ///).
  • I signed the CLA.
  • All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel on Discord.

This is a subclass of FlutterEngine, which is still manually reference
counted, but that's not problematic since the headers have been migrated
to ARC-safe syntax that preserves existing behaviour.

Issue: flutter/flutter#137801
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!).

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.

@stuartmorgan
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test-exempt: code refactor with no semantic change

@cbracken cbracken added the autosubmit Merge PR when tree becomes green via auto submit App label Sep 30, 2024
@auto-submit auto-submit bot merged commit b466a0d into flutter:main Sep 30, 2024
29 checks passed
@cbracken cbracken deleted the arc-migration-1-FlutterHeadlessDartRunner branch September 30, 2024 16:47
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Sep 30, 2024
auto-submit bot pushed a commit to flutter/flutter that referenced this pull request Sep 30, 2024
…155944)

flutter/engine@f4507e7...b466a0d

2024-09-30 [email protected] iOS: Migrate FlutterHeadlessDartRunner to ARC (flutter/engine#55502)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
thejitenpatel pushed a commit to thejitenpatel/flutter that referenced this pull request Oct 1, 2024
…lutter#155944)

flutter/engine@f4507e7...b466a0d

2024-09-30 [email protected] iOS: Migrate FlutterHeadlessDartRunner to ARC (flutter/engine#55502)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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