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Added some thread asserts to the code and made ios_surface_ safe since#12775
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gaaclarke merged 2 commits intoOct 3, 2019
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its being written and read from different threads.
chinmaygarde
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Oct 3, 2019
| private: | ||
| fml::WeakPtr<FlutterViewController> owner_controller_; | ||
| std::unique_ptr<IOSSurface> ios_surface_; | ||
| std::mutex ios_surface_mutex_; |
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You can annotate ios_surface_ with FML_GUARDED_BY so that static thread safety check can be enabled. Also, can you add a comment there saying which threads access that resource and when. Since there wont be any contention, its hard to reason about why that lock is necessary.
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Done.
I'm not so sure usage of ios_surface_ is coordinated externally, calling SetOwnerViewController rapidly could cause CreateRenderingSurface to be talking to a undefined ios_surface_ without this mutex, for example.
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Thats good to document too. But your call.
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[email protected]:flutter/engine.git/compare/62e58c5d9fc2...2e163b2 git log 62e58c5..2e163b2 --no-merges --oneline 2019-10-04 [email protected] Revert "Build AOT and test targets, generate FARs when building Fuchsia (#12761)" (flutter-team-archive/engine#12781) 2019-10-03 [email protected] Enabled people to chose if SystemNavigator.pop is animated on iOS. (flutter-team-archive/engine#12752) 2019-10-03 [email protected] Added some thread asserts to the code and made ios_surface_ safe since (flutter-team-archive/engine#12775) 2019-10-03 [email protected] Build AOT and test targets, generate FARs when building Fuchsia (flutter-team-archive/engine#12761) 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] on the revert to ensure that a human is aware of the problem. To report a problem with the AutoRoller itself, please file a bug: https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+/master/autoroll/README.md
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[email protected]:flutter/engine.git/compare/62e58c5d9fc2...2e163b2 git log 62e58c5..2e163b2 --no-merges --oneline 2019-10-04 [email protected] Revert "Build AOT and test targets, generate FARs when building Fuchsia (flutter#12761)" (flutter-team-archive/engine#12781) 2019-10-03 [email protected] Enabled people to chose if SystemNavigator.pop is animated on iOS. (flutter-team-archive/engine#12752) 2019-10-03 [email protected] Added some thread asserts to the code and made ios_surface_ safe since (flutter-team-archive/engine#12775) 2019-10-03 [email protected] Build AOT and test targets, generate FARs when building Fuchsia (flutter-team-archive/engine#12761) 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] on the revert to ensure that a human is aware of the problem. To report a problem with the AutoRoller itself, please file a bug: https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+/master/autoroll/README.md
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its being written and read from different threads.
Relevant issue: flutter/flutter#41798