18394fb179
Summary: This is a follow up of the work by brentvatne in #5052. This addresses the feedback by astreet. - Uses ReactChoreographer with a new callback type - Callback dispatch logic moved to JS - Only calls into JS when needed, when there are pending callbacks, it even removes the Choreographer listener when no JS context listen for idle events. ** Test plan ** Tested by running a background task that burns all remaining idle time (see new UIExplorer example) and made sure that UI and JS fps stayed near 60 on a real device (Nexus 6) with dev mode disabled. Also tried adding a JS driven animation and it stayed smooth. Tested that native only calls into JS when there are pending idle callbacks. Also tested that timers are executed before idle callback. ``` requestIdleCallback(() => console.log(1)); setTimeout(() => console.log(2), 100); burnCPU(1000); // 2 // 1 ``` I did *not* test with webworkers but it should work as I'm using executor tokens. Closes https://github.com/facebook/react-native/pull/8569 Differential Revision: D3558869 Pulled By: astreet fbshipit-source-id: 61fa82eb26001d2b8c2ea69c35bf3eb5ce5454ba |
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README.md
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