Add Flutter Linux merged threads migration annoucement #12534
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| title: Merged threads on Linux | ||||||
| description: >- | ||||||
| Learn about threading changes on Linux in Flutter FIXME:RELEASE_VERSION | ||||||
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| ## Summary | ||||||
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| Flutter FIXME:RELEASE_VERSION merges the UI and platform threads by default on Linux. | ||||||
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| ## Context | ||||||
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| Originally, Flutter had separate threads to produce UI frames and to | ||||||
| interact with the native platform. | ||||||
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| The split-thread design prevented Flutter apps and plugins from using Dart FFI | ||||||
| to interoperate with native APIs that must be called on the platform thread. | ||||||
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| ## Description of change | ||||||
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| Flutter FIXME:Next version merges the UI and platform threads by default on Linux. | ||||||
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| This mirrors all the other platforms, whose threads were merged by default in | ||||||
| Flutter 3.29 (iOS and Android) and 3.35 (macOS and Windows). | ||||||
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| ## Migration guide | ||||||
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| Merged threads should not affect your app. | ||||||
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| If you suspect merged threads has regressed your app, please reach out on | ||||||
| [Issue 150525][]. | ||||||
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| ## Timeline | ||||||
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| Landed in version: FIXME:LANDED_VERSION<br> | ||||||
| In stable release: FIXME:RELEASE_VERSION | ||||||
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| ## References | ||||||
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| Relevant issue: | ||||||
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| * [Issue 150525][] | ||||||
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| Relevant PRs: | ||||||
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| * [PR 176759][] | ||||||
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| [Issue 150525]: {{site.repo.flutter}}/issues/150525 | ||||||
| [PR 176759]: {{site.repo.flutter}}/pull/176759 | ||||||
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According to line 41, this list should be in alphabetical order. This new entry is appended at the end, not in alphabetical order. Please place it in the correct alphabetical position to follow the documented convention.