Add LowPriorityExecutor to iOS #51047
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Summary: In some apps, we spend a non-trivial amount of time calling ShadowNode destructors on the UI thread. A simple way to avoid stalling the UI thread is to move the `baseRevision_` instance to a data structure that is cleared on a background thread, so it's tree of ShadowNode shared_ptrs are released (and in most cases destroyed) on the background thread. To avoid thread initialization costs, this change adds an AsyncDestructor helper that uses a single background thread and a queue of to-be-destroyed objects that are released in a run loop. This change is also guarded by a feature flag so we can keep an eye out for potential memory leaks. ## Changelog [Internal] Differential Revision: D73688009
Summary: To be able to take advantage of the ReactNativeFeatureFlags::enableDestroyShadowTreeRevisionAsync feature, the iOS host platform implementation needs to supply a LowPriorityExecutor. This adds a LowPriorityExecutor implementation using a low priority dispatch queue. ## Changelog [Internal] Differential Revision: D73945440
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This pull request was exported from Phabricator. Differential Revision: D73945440 |
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This PR is stale because it has been open for 180 days with no activity. It will be closed in 7 days unless you comment on it or remove the "Stale" label. |
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This PR is stale because it has been open 180 days with no activity. Remove stale label or comment or this will be closed in 7 days. |
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Summary:
To be able to take advantage of the ReactNativeFeatureFlags::enableDestroyShadowTreeRevisionAsync feature, the iOS host platform implementation needs to supply a LowPriorityExecutor.
This adds a LowPriorityExecutor implementation using a low priority dispatch queue.
Changelog
[Internal]
Differential Revision: D73945440