Commit Graph

4 Commits

Author SHA1 Message Date
Valentin Shergin c3038d7210 Warn about slow main thread React methods
Summary:
This is revert of revert of https://github.com/facebook/react-native/pull/15542
WITHOUT default RCT_MAIN_THREAD_WATCH_DOG_THRESHOLD value. So, it makes it completly opt-in feature.

When code blocks the UI thread for too long, it's a bad sign because this can prevent the app from remaining responsive. This change helps detect such responsiveness issues by warning when a React method executes on the UI thread longer than some threshold.

Reviewed By: mmmulani

Differential Revision: D5772433

fbshipit-source-id: 24fe4fc0deffe9c091a4bfc4cbd76cb4f34c4091
2017-09-06 16:38:37 -07:00
Jing Chen 6763f7a216 Revert D5724764: [react-native][PR] iOS: Warn about slow main thread React methods
Differential Revision: D5724764

fbshipit-source-id: a2f9c6917aea1d47854a1fd38a51b45c0b624ec2
2017-08-31 12:05:41 -07:00
Adam Comella 68461492bc iOS: Warn about slow main thread React methods
Summary:
When code blocks the UI thread for too long, it's a bad sign because this can prevent the app from remaining responsive. This change helps detect such responsiveness issues by warning when a React method executes on the UI thread longer than some threshold.

**Test Plan**

Changed AppState's getCurrentAppState method to sleep for 500 ms and verified that a warning was emitted:

```
2017-08-17 19:45:29.479 [warn][tid:main][RCTModuleMethod.mm:527] mainThreadWatchdog: invocation of [RCTAppState getCurrentAppState:error:] took 501ms
```

Adam Comella
Microsoft Corp.
Closes https://github.com/facebook/react-native/pull/15542

Differential Revision: D5724764

Pulled By: shergin

fbshipit-source-id: f1dc4bf17d3657c397720a47fabc7f32bf81b7ac
2017-08-28 22:44:55 -07:00
Alex Dvornikov 6783694158 Add support for Cxx objects as arguments to native modules
Reviewed By: fkgozali

Differential Revision: D5589269

fbshipit-source-id: 1bd7004adc397241cabfb1dc59ba1aebad943bf8
2017-08-14 05:22:17 -07:00