8 Commits

Author	SHA1	Message	Date
Ruslan Shestopalyuk	e3183739bb	Options to run Fantom with address and thread sanitizers enabled (#53300) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/53300 # Changelog: [Internal] - This adds two new modes to Fantom, allowing to run the native (C++) side with enabling either: * Address sanitizer, which would detect memory overwrites * Thread sanitizer, which can detect potential threading issues, such as race conditions This are opt-in for now. Currently, both modes already detect different errors, which have a high chance to be real issues and have to be fixed. Reviewed By: lenaic Differential Revision: D80339524 fbshipit-source-id: 784ddb9f0af79a04b074e107e4955724d54d5685	2025-08-15 08:12:04 -07:00
Rubén Norte	4ee326f52c	Add documentation for JS memory profiler in Fantom (#53226) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/53226 Changelog: [internal] This adds documentation about how to take JS memory heap snapshots in Fantom. Reviewed By: lenaic Differential Revision: D80090283 fbshipit-source-id: 04f66a62aa756d1020b8d8ef6fc0ea7e68341710	2025-08-12 11:08:08 -07:00
Rubén Norte	90804fd088	Add documentation for JS sampling profiler in Fantom (#53227) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/53227 Changelog: [internal] This adds docs for the new JS sampling profiler in Fantom Reviewed By: lenaic Differential Revision: D80090284 fbshipit-source-id: 0f7fa498cf141a51ac6fda331522945d42fc494d	2025-08-12 11:08:08 -07:00
Rubén Norte	e2035379b6	Add documentation for debugging in Fantom (#53228) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/53228 Changelog: [internal] This adds some documentation about how to debug Fantom tests (C++ and JS). Reviewed By: lenaic Differential Revision: D80090286 fbshipit-source-id: 435d2079abfe72e93de0c297347b15dc39b25a89	2025-08-12 11:08:08 -07:00
Rubén Norte	0bf7721862	Use Jest naming for test regex in Fantom docs (#53229) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/53229 Changelog: [internal] Tiny change to align with how Jest refers to this argument in its docs: https://jestjs.io/docs/cli#jest-regexfortestfiles Reviewed By: lenaic Differential Revision: D80090285 fbshipit-source-id: 86a4ad75078eb9b7575fca9659cc1a2e678f7a0a	2025-08-12 11:08:08 -07:00
Devan Buggay	15373218ec	Add granular control with pragma modes (#52894) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/52894 Adds the following boolean pragma modes for more granular control: ``` fantom_native_opt true|false fantom_js_opt true|false fantom_js_bytecode true|false ``` Previously these were all set together with `fantom_mode`. These modes are mutually exclusive with `fantom_mode`. Changelog: [Internal] Reviewed By: rubennorte Differential Revision: D79151687 fbshipit-source-id: 59c3f20bccb570c0293ffd037609946a1a9bbb8f	2025-07-30 14:22:22 -07:00
Devan Buggay	6d51bce9ed	Refactor native/js modes (#52822) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/52822 Refactors underlying modes by adding `isNativeOpt`, `isJsOpt`, and `isJsBytecode` to allow for more granular control in a future diff. ### View ### | (index) | Task name | Latency average (ns) | Latency median (ns) | Throughput average (ops/s) | Throughput median (ops/s) | Samples | | ------- | --------------------------------------------------------- | ---------------------- | ------------------------- | -------------------------- | ------------------------- | ------- | | 0 | 'render 100 uncollapsable views' | '23005778.16 ± 0.53%' | '22877194.50 ± 11607.50' | '43 ± 0.50%' | '44' | 64 | | 1 | 'render 1000 uncollapsable views' | '271276451.70 ± 0.61%' | '268378201.00 ± 9925.00' | '4 ± 0.59%' | '4' | 64 | | 2 | 'render 100 views with large amount of props and styles' | '47580650.91 ± 1.21%' | '47212012.00 ± 2979.00' | '21 ± 0.89%' | '21' | 64 | | 3 | 'render 1000 views with large amount of props and styles' | '521237370.22 ± 1.09%' | '516142815.00 ± 41682.00' | '2 ± 0.84%' | '2' | 64 | | 4 | 'render 1500 views with large amount of props and styles' | '828143691.48 ± 0.94%' | '824723257.50 ± 11331.50' | '1 ± 0.73%' | '1' | 64 | ### View (mode 🚀, jsMode 🚀, bytecode) ### | (index) | Task name | Latency average (ns) | Latency median (ns) | Throughput average (ops/s) | Throughput median (ops/s) | Samples | | ------- | --------------------------------------------------------- | ---------------------- | -------------------------- | -------------------------- | ------------------------- | ------- | | 0 | 'render 100 uncollapsable views' | '4051033.45 ± 2.01%' | '3876618.00' | '251 ± 1.29%' | '258' | 247 | | 1 | 'render 1000 uncollapsable views' | '86134420.23 ± 1.38%' | '85815369.50 ± 281477.50' | '12 ± 1.38%' | '12' | 64 | | 2 | 'render 100 views with large amount of props and styles' | '13921817.92 ± 2.57%' | '13474963.50 ± 4977.50' | '72 ± 1.62%' | '74' | 72 | | 3 | 'render 1000 views with large amount of props and styles' | '182664526.31 ± 0.74%' | '181872565.00 ± 10281.00' | '5 ± 0.73%' | '5' | 64 | | 4 | 'render 1500 views with large amount of props and styles' | '313110386.45 ± 1.13%' | '307934163.50 ± 156920.50' | '3 ± 1.07%' | '3' | 64 | Changelog: [Internal] Reviewed By: rubennorte Differential Revision: D78912257 fbshipit-source-id: 16fd0301af98159dbb9818cb8092bd4416ef2559	2025-07-30 14:22:22 -07:00
Tim Yung	d6f29c8afd	RN: Move {packages => private}/react-native-fantom (#51938) ... Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/51938 Moves `packages/react-native-fantom` to `private/react-native-fantom`. Changelog: [Internal] Reviewed By: huntie Differential Revision: D76368959 fbshipit-source-id: 8d62f792229c10cd108dc849e8629d3174dc72c1	2025-06-11 23:49:51 -07:00