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[native] Memoize `PanGestureHandler` props in `SwipeableMessage`
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Authored by atul on Aug 31 2023, 9:25 AM.
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Details

Summary

Based on flamegraph from profiler, it looks like A. creating SwipeSnakes and PanGestureHandler in SwipeableMessage is expensive B. because we're not memoizing things as carefully as we could be we're eating this cost multiple times.

In this diff I just memoize the PanGestureHandler props. In the subsequent diff I'll add some more memoization to this component specifically wrt the SwipeSnakes


Depends on D9052

Test Plan

"Before":

6b03c7.png (1×2 px, 530 KB)

Will do another round of profiling after the subsequent diff to show improvement.

Diff Detail

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Event Timeline

atul published this revision for review.Aug 31 2023, 9:27 AM
atul edited the test plan for this revision. (Show Details)
tomek added inline comments.
native/chat/swipeable-message.react.js
242–243 ↗(On Diff #30663)

It might be even better to define them outside the component

This revision is now accepted and ready to land.Sep 1 2023, 3:50 AM
native/chat/swipeable-message.react.js
242–243 ↗(On Diff #30663)

That's a good point. There might be an argument for defining this "close to where this is being used," but I'll go ahead and pull it out of component.

This revision was landed with ongoing or failed builds.Sep 5 2023, 11:34 AM
This revision was automatically updated to reflect the committed changes.