[ Widget Preview ] Gracefully handle unexpected analysis context disposal #178550
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…osal It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes #178472
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This pull request improves the robustness of the widget preview detector by gracefully handling unexpected analysis context disposal. It introduces mutex guards to prevent race conditions and adds defensive checks for analyzer API calls that might fail during shutdown. Additionally, new regression tests are added to cover these scenarios. The changes are well-aligned with the goal of preventing crashes. I have one suggestion to improve the correctness of a new test case.
...ls/test/commands.shard/permeable/widget_preview/preview_detector_regression_178472_test.dart
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autosubmit label was removed for flutter/flutter/178550, because - The status or check suite Windows tool_tests_commands has failed. Please fix the issues identified (or deflake) before re-applying this label. |
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…osal (flutter#178550) It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes flutter#178472
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…osal (flutter#178550) It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes flutter#178472
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Manual roll Flutter from 9b5ad80 to cc14ef5 (143 revisions) Manual roll requested by tarrinneal@google.com flutter/flutter@9b5ad80...cc14ef5 2025-11-17 bkonyi@google.com [ Widget Preview ] Fix crash when `widget_preview_scaffold/.dart_tool` doesn't exist (flutter/flutter#178662) 2025-11-17 william.oprandi@gmail.com Dev proxy correctly copy query parameters from original request (flutter/flutter#178162) 2025-11-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ac5942fe75d0 to cf94632d94a1 (1 revision) (flutter/flutter#178664) 2025-11-17 116356835+AbdeMohlbi@users.noreply.github.com Improve code quality `FlutterViewTest.java` (flutter/flutter#178594) 2025-11-17 katelovett@google.com Roll customer tests (flutter/flutter#178652) 2025-11-17 42980667+srivats22@users.noreply.github.com Corrects invalid Flutter wiki links (flutter/flutter#178158) 2025-11-17 sokolovskyi.konstantin@gmail.com Fix LateInitializationError in didChangeTextScaleFactor code example. (flutter/flutter#178375) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from d877de9fc23e to 84c83c0dfb4a (3 revisions) (flutter/flutter#178653) 2025-11-17 116356835+AbdeMohlbi@users.noreply.github.com Small refactor in `DartMessenger.java` to use method reference (flutter/flutter#178584) 2025-11-17 116356835+AbdeMohlbi@users.noreply.github.com fix typos in `PlatformChannel.java` docs (flutter/flutter#178589) 2025-11-17 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Enable UIScene Migration and update create templates (#178328)" (flutter/flutter#178665) 2025-11-17 116356835+AbdeMohlbi@users.noreply.github.com Remove unnecessary `String.valueOf` in `ListenableEditingState.java` (flutter/flutter#178597) 2025-11-17 116356835+AbdeMohlbi@users.noreply.github.com Update `Metadata.java` to use `getBytes` in a static context (flutter/flutter#178587) 2025-11-17 jason-simmons@users.noreply.github.com Reduce the data copying in CanvasPath related to the SkPathBuilder API migration (flutter/flutter#178512) 2025-11-17 engine-flutter-autoroll@skia.org Roll Packages from 799b62c to ce44ebb (10 revisions) (flutter/flutter#178649) 2025-11-17 15619084+vashworth@users.noreply.github.com Enable UIScene Migration and update create templates (flutter/flutter#178328) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from 5fb44352b232 to d877de9fc23e (1 revision) (flutter/flutter#178647) 2025-11-17 15619084+vashworth@users.noreply.github.com Revert "Separate copying dsym into its own target (#178261)" (flutter/flutter#178545) 2025-11-17 mdebbar@google.com [web] Reduce Skwasm test shards to 2 (flutter/flutter#178239) 2025-11-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ee793f732959 to ac5942fe75d0 (1 revision) (flutter/flutter#178637) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from b30859d35b89 to 5fb44352b232 (1 revision) (flutter/flutter#178636) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from 5b7f8f61528e to b30859d35b89 (1 revision) (flutter/flutter#178634) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from aad0515710a9 to 5b7f8f61528e (7 revisions) (flutter/flutter#178631) 2025-11-17 engine-flutter-autoroll@skia.org Roll Skia from 761e1fe67e15 to aad0515710a9 (1 revision) (flutter/flutter#178624) 2025-11-16 engine-flutter-autoroll@skia.org Roll Skia from 5f9157717150 to 761e1fe67e15 (1 revision) (flutter/flutter#178614) 2025-11-16 engine-flutter-autoroll@skia.org Roll Skia from 1b435b65e754 to 5f9157717150 (1 revision) (flutter/flutter#178612) 2025-11-16 engine-flutter-autoroll@skia.org Roll Dart SDK from dffc5f3f9be6 to ee793f732959 (1 revision) (flutter/flutter#178607) 2025-11-16 engine-flutter-autoroll@skia.org Roll Skia from ce2168cf2b6c to 1b435b65e754 (1 revision) (flutter/flutter#178604) 2025-11-15 engine-flutter-autoroll@skia.org Roll Dart SDK from 50eca21d80c4 to dffc5f3f9be6 (1 revision) (flutter/flutter#178603) 2025-11-15 matej.knopp@gmail.com [macOS] Implement dialog window (flutter/flutter#176893) 2025-11-15 engine-flutter-autoroll@skia.org Roll Dart SDK from f6f88ed5e5a1 to 50eca21d80c4 (1 revision) (flutter/flutter#178599) 2025-11-15 engine-flutter-autoroll@skia.org Roll Dart SDK from 9eda5b525ca9 to f6f88ed5e5a1 (1 revision) (flutter/flutter#178576) 2025-11-15 engine-flutter-autoroll@skia.org Roll Skia from c5c3399b3a84 to ce2168cf2b6c (1 revision) (flutter/flutter#178577) 2025-11-15 bernaferrari2@gmail.com Add a `RepeatingAnimationBuilder` API (flutter/flutter#174014) 2025-11-15 engine-flutter-autoroll@skia.org Roll Dart SDK from 486be9c17488 to 9eda5b525ca9 (1 revision) (flutter/flutter#178562) 2025-11-15 engine-flutter-autoroll@skia.org Roll Skia from f5d29842bf45 to c5c3399b3a84 (1 revision) (flutter/flutter#178559) 2025-11-14 engine-flutter-autoroll@skia.org Roll Skia from f58b1b8052a2 to f5d29842bf45 (3 revisions) (flutter/flutter#178556) 2025-11-14 engine-flutter-autoroll@skia.org Roll Dart SDK from c6c5f6c169a9 to 486be9c17488 (1 revision) (flutter/flutter#178555) 2025-11-14 bkonyi@google.com [ Widget Preview ] Gracefully handle unexpected analysis context disposal (flutter/flutter#178550) 2025-11-14 codefu@google.com docs: Add documentation for running devicelab tests in a PR (flutter/flutter#178554) 2025-11-14 matt.boetger@gmail.com [Reland] Generate new Gradle lockfiles and delete ignore files (flutter/flutter#178553) 2025-11-14 flar@google.com Fix crash when doing a SaveLayer under a non-invertible transform (flutter/flutter#178507) 2025-11-14 matt.boetger@gmail.com [Reland] Generate ignore lockfiles and Update Android Embedder Dependencies (flutter/flutter#178538) 2025-11-14 engine-flutter-autoroll@skia.org Roll Skia from 4c02d9fc79c1 to f58b1b8052a2 (1 revision) (flutter/flutter#178543) ...
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…osal (flutter#178550) It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes flutter#178472
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…osal (flutter#178550) It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes flutter#178472
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…osal (flutter#178550) It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors. This change guards against this scenario by ensuring that all calls to `findPreviewFunctions` are guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned. Fixes flutter#178472
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It's possible that the preview detector is in the middle of processing sources after a source file was changed while the widget previewer is shutting down if we're not holding the mutex. This can result in the analysis context being disposed of when we don't expect it, causing requests to the analyzer to return errors.
This change guards against this scenario by ensuring that all calls to
findPreviewFunctionsare guarded by the mutex. This change also removes assumptions related to the return type from analyzer APIs to account for the possibility that an error response was returned.Fixes #178472