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[web] Prevent re-rendering disposed views when the engine hot restarts. #49958
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mdebbar
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There are some conflicts that need to be resolved but this LGTM!
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…142290) flutter/engine@9142fc4...8a81e53 2024-01-26 [email protected] Roll Dart SDK from 00784f1f22b5 to 6f8bcd5b48ab (1 revision) (flutter/engine#50074) 2024-01-26 [email protected] [web] Add `views` proxy and `getInitialData`. (flutter/engine#49320) 2024-01-26 [email protected] [web] Prevent re-rendering disposed views when the engine hot restarts. (flutter/engine#49958) 2024-01-26 [email protected] Roll Dart SDK from 2fb950853f06 to 00784f1f22b5 (3 revisions) (flutter/engine#50068) 2024-01-26 [email protected] Avoid sizing `ImageReaderSurfaceProducer` smaller than 1x1 (flutter/engine#50066) 2024-01-26 [email protected] Use clamp sampling mode in external texture. (flutter/engine#50063) 2024-01-26 [email protected] Reland Optimizations for TLHC frame rate and jank (flutter/engine#50065) 2024-01-25 [email protected] Roll Fuchsia Linux SDK from Igt2rE-R6rgfmTRaF... to WHlwlOwznFknNm5IS... (flutter/engine#50059) Also rolling transitive DEPS: fuchsia/sdk/core/linux-amd64 from Igt2rE-R6rgf to WHlwlOwznFkn 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],[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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While debugging a different issue, @elliette identified a problem with the web engine when a flutter web app hot-restarts.
TL;DR: the engine is requesting the framework to re-render a view as it tears them down, causing an assertion failure.
This fix stops listening to changes on view "disposed" events when the engine itself is being disposed, so it doesn't trigger re-renders for views that are never coming back.
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