Summary:
public
Most of the time - especially during app startup - when we call UIManager.manageChildren(), we are actually just adding the first set of children to a newly created view.
This case is already optimized for in the JS code, by memoizing index arrays at various sizes, but this is not especially efficient since it is still sending an array of indices with each call that could be easily inferred on the native side instead.
I've added a hybrid native/JS optimization that improves the performance for this case. It's not a huge win in terms of time saved, but benchmarks show improvements in the ~1% range for several of the app startup metrics.
Reviewed By: tadeuzagallo
Differential Revision: D2757388
fb-gh-sync-id: 74f0cdbba93af2c04d69b192a8c2cc5cf429fa09
Summary:
public
Thanks to the new lazy initialization system for modules, `RCTDidCreateNativeModules` no longer does what the name implies.
Previously, `RCTDidCreateNativeModules` was fired after all native modules had been initialized. Now, it simply fires each time the bridge is reloaded. Modules are created on demand when they are needed, so most of the assumptions about when `RCTDidCreateNativeModules` will fire are now incorrect.
This diff deprecates `RCTDidCreateNativeModules`, and adds a new notification, `RCTDidInitializeModuleNotification`, which fires each time a module a new module is instantiated.
If you need to access a module at any time you can just call `-[bridge moduleForClass:]` and the module will be instantiated on demand. If you want to access a module *only* after it has already been instantiated, you can use the `RCTDidInitializeModuleNotification` notification.
Reviewed By: tadeuzagallo
Differential Revision: D2755036
fb-gh-sync-id: 25bab6d5eb6fcd35d43125ac45908035eea01487
Summary:
public
A lot of the core modules have to use private methods in the bridge, specially
since the `RCTBatchedBridge` interface is never exposed. That was leading to a
lot of different private bridge categories spread across different modules,
which makes harder to identify which modules are affected by private API changes.
Replace all the categories with a single private header.
Reviewed By: nicklockwood
Differential Revision: D2757564
fb-gh-sync-id: 793158b9082d542b74a6094ed0db4d5dc3a88f78
Summary:
A component can be backed by native "node" that can change its internal state, which would result in a new UI after the next layout. Since js has no way of knowing that this has happened it wouldn't trigger a layout if nothing in js world has changed. Therefore we need a way how to trigger layout from native code.
This diff does it by adding methods `layoutIfNeeded` on the uimanager and `isBatchActive` on the bridge.
When `layoutIfNeeded` is called it checks whether a batch is in progress. If it is we do nothing, since at it's end layout happens. If a batch is not in progress we immidiately do layout.
I went with the easiest way how to implement this - `isBatchActive` is a public method on the bridge. It's not ideal, but consistent with other methods for modules.
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2748896
fb-gh-sync-id: f3664c4af980d40a463b538e069b26c9ebad6300
Summary:
public
This diff replaces the RegEx module method parser with a handwritten recursive descent parser that's faster and easier to maintain.
The new parser is ~8 times faster when tested on the UIManager.managerChildren() method, and uses ~1/10 as much RAM.
The new parser also supports lightweight generics, and is more tolerant of white space.
(This means that you now can – and should – use types like `NSArray<NSString *> *` for your exported properties and method arguments, instead of `NSStringArray`).
Reviewed By: jspahrsummers
Differential Revision: D2736636
fb-gh-sync-id: f6a11431935fa8acc8ac36f3471032ec9a1c8490
Summary:
public
Currently, we wait to invoke `-flushUIBlocks` until the JavaScript batch to native has completed. This means we may be waiting an unnecessarily long time to perform view hierarchy changes and prop changes.
By instead invoking this after each chunk of enqueued UI blocks, we can perform some updates more eagerly, increasing our utilization of the main thread while splitting up the amount of time we spend running upon it.
This shouldn't affect layout, which is still tied to `-batchDidComplete`, so any visual inconsistencies should be limited to prop changes, which seems acceptable for the dramatic improvement in performance.
Reviewed By: javache
Differential Revision: D2658552
fb-gh-sync-id: 6d4560e21d7da1b02d2f30d1860d60735f11c4b5
Summary: Request from issue #3893
* Added support for `secure-text` and `login-password` types to AlertIOS.
* Fixed and extended the cancel button highlighting functionality, which was broken at some point
* Added localization for default `OK` and `Cancel` labels when using UIAlertController
Closes https://github.com/facebook/react-native/pull/4401
Reviewed By: javache
Differential Revision: D2702052
Pulled By: nicklockwood
fb-gh-sync-id: cce312d7fec949f5fd2a7c656e65c657c4832c8f
Summary: There is no point in using `updateLayout` when we have `didSetProps`.
The only a bit risky part is calling `dirtyLayout` in `setFrame:forView:` instead of `updateLayout`,
but since setting frame shouldn't really change border/margin/padding it should be ok.
Depends on D2699512.
public
Reviewed By: nicklockwood
Differential Revision: D2700012
fb-gh-sync-id: a7c33b3b4e3ddc195bebebb8b03934131af016fb
Summary: public
The `bridge.modules` dictionary provides access to all native modules, but this API requires that every module is initialized in advance so that any module can be accessed.
This diff introduces a better API that will allow modules to be initialized lazily as they are needed, and deprecates `bridge.modules` (modules that use it will still work, but should be rewritten to use `bridge.moduleClasses` or `-[bridge moduleForName/Class:` instead.
The rules are now as follows:
* Any module that overrides `init` or `setBridge:` will be initialized on the main thread when the bridge is created
* Any module that implements `constantsToExport:` will be initialized later when the config is exported (the module itself will be initialized on a background queue, but `constantsToExport:` will still be called on the main thread.
* All other modules will be initialized lazily when a method is first called on them.
These rules may seem slightly arcane, but they have the advantage of not violating any assumptions that may have been made by existing code - any module written under the original assumption that it would be initialized synchronously on the main thread when the bridge is created should still function exactly the same, but modules that avoid overriding `init` or `setBridge:` will now be loaded lazily.
I've rewritten most of the standard modules to take advantage of this new lazy loading, with the following results:
Out of the 65 modules included in UIExplorer:
* 16 are initialized on the main thread when the bridge is created
* A further 8 are initialized when the config is exported to JS
* The remaining 41 will be initialized lazily on-demand
Reviewed By: jspahrsummers
Differential Revision: D2677695
fb-gh-sync-id: 507ae7e9fd6b563e89292c7371767c978e928f33
Summary: public
Ability to efficiently remove all keys with a particular prefix
Reviewed By: tadeuzagallo
Differential Revision: D2658741
fb-gh-sync-id: 3770f061c83288efe645162ae84a9fd9194d2fd6
Summary: If a redbox error is too long it's not shown at all:
{F24443416}
This diff truncates it to its first 10000 chars, which should be good enough:
{F24443417}
The reason is a limitation of UILabel which backs text property on the used UITableViewCell.
Ideally we would use a custom cell with UITextView, but I don't feel there is any value in displaying super long error messages in a redbox.
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2690638
fb-gh-sync-id: d9b3fcecd2602e8c2618afe1bb97221c2e506605
Summary: public
We were calling constantsToExport twice for every ViewManager, and including two copies of the values in __fbBatchedBridgeConfig. This diff removes the copy from UIManager and then puts it back on the JS side.
Reviewed By: tadeuzagallo
Differential Revision: D2665625
fb-gh-sync-id: 147ec4bfb404835e3875964476ba233d619c28aa
Summary: public
RCTPasteboard is a very basic API for writing strings to the pasteboard. Useful for implementing "copy to clipboard" functionality.
Reviewed By: astreet
Differential Revision: D2663875
fb-gh-sync-id: 8d0ecd824c3e9fe135b02201d21d0dab1907c329
Summary: public
In iOS < 9, inserting a nil object into NSMutableDictionary crashes. It is valid for come components to return a nil shadowView (e.g. ART nodes), and this was crashing on iOS 8.
Reviewed By: jspahrsummers
Differential Revision: D2658309
fb-gh-sync-id: 7abf9273708cc03c3b6307b69ba11c016b471fbe
Summary: public
RCTImagePicker (aka ImagePickerIOS) was previously displaying UI from a random thread, which is unsafe. This diff forces it to execute on the main thread instead.
Reviewed By: jspahrsummers
Differential Revision: D2657465
fb-gh-sync-id: 3c0fa6935061ccaa3e6ce649b4e3e8ad8c701384
Summary: This queue processes layout and user interface updates, so it should have as high a quality-of-service/priority as possible.
public
Reviewed By: javache
Differential Revision: D2641837
fb-gh-sync-id: 934686f7969b43101af183148d67ff7be4bdf660
Summary: public
The WebView executor has no benefits compared to the JSC executor (slower, no extra debugging tools...),
and it's pretty hacky (since it injects the code in a script tag we have to check for tags in the comments and etc...).
Reviewed By: nicklockwood, javache
Differential Revision: D2636465
fb-gh-sync-id: 0d0f8a59e2c12fe7905b02060b3938c894d2802b
Summary: public
Rename it to `RCT_PROFILE_(BEGIN|END)_EVENT` to make it clearer that it's a macro,
since it has special behaviours.
Reviewed By: jspahrsummers
Differential Revision: D2631542
fb-gh-sync-id: 629c139462c4aa3582f719b14482017d13676e33
Summary: public
There were some old markers that are now automatically inject and now are no longer necessary (+ one that was missing an end call :( ))
Reviewed By: javache
Differential Revision: D2625901
fb-gh-sync-id: 4c4c9d6b4e8e2b4bdb9c64fde01000b0ca2e9f47
Summary: public
Add RCTFatal for reporting fatal runtime conditions. This centralizes failure handling to one function and allows you to customize how they should be handled. RCTFatal will be logged to the console and as a redbox and will also be triggered by fatal exceptions coming from RCTExceptionsManager.
Note that there is no RCTLogFatal, since just logging the fatal condition does not allow us to handle it consistently.
Reviewed By: nicklockwood
Differential Revision: D2615490
fb-gh-sync-id: 7d8e134419e10a8fb549297054ad955db3f6bee0
Summary: I was getting the following error when running `testAsyncStorageTest`
```
uncaught exception 'NSInvalidArgumentException', reason: 'Invalid type in JSON write (NSError)'
```
nicklockwood pointed out that it might be because we're attempting to send a `NSError *` over the bridge at some point. So I went looking for cases where that might happen and found this instance.
public
Reviewed By: jingc
Differential Revision: D2619240
fb-gh-sync-id: dc26ec268f976fec44f2804831398d3b01ab6115
Summary: public
Added lightweight genarics annotations to make the code more readable and help the compiler catch bugs.
Fixed some type bugs and improved bridge validation in a few places.
Reviewed By: javache
Differential Revision: D2600189
fb-gh-sync-id: f81e22f2cdc107bf8d0b15deec6d5b83aacc5b56
Summary: public
The UIManager had a lock around the enqueued ui blocks, but now all the operations
should happen on the shadow thread, so I added assertions to it and removed the
locks.
Reviewed By: nicklockwood
Differential Revision: D2605760
fb-gh-sync-id: e1bc649f759502e7e9fd059932e0cba38dba05bf
Summary: There is no point in dispatching to main thread if there is nothing to do there.
This place gets called basically any time a repeating js timer fires, which doesn't imply UI changes (although usually that's why people setup timers).
Combined with previous diffs that makes us not generate empty blocks (nil instead), this could be minor perf win in some rare cases.
This also changes semantic of `reactBridgeDidFinishTransaction` call a bit. Previously it was done no matter if UI has changed or not.
I think it should be safe, since seems like callees really care only about views being laid out.
Depends on D2571166. (not strictly speaking)
public
Reviewed By: jspahrsummers, nicklockwood
Differential Revision: D2571188
fb-gh-sync-id: 02d52e4615475072c3c27226e67c431a667ec990
Summary: Same as in previous diffs. Gets us into a better place to know if we really have UI updates and it's marginally more efficient.
Depends on D2571143. (not really)
public
Reviewed By: nicklockwood
Differential Revision: D2571166
fb-gh-sync-id: e8f34521ec2e12156a49f1cd655e92df1db34fca
Summary: Previously `_bridgeTransactionListeners` were informed about `reactBridgeDidFinishTransaction` inside of one of the UI blocks.
That seems pretty arbitrary, doesn't really mean a "transaction" is really over (assuming transaction means all UI updates) and even when that block does nothing we still need to call these listeners, since there could be other UI blocks generated somewhere else!
So I've moved this call to a place that seemed better (=after all UI blocks are done), since all listeners are interested in knowing when layout has happened.
public
Reviewed By: nicklockwood
Differential Revision: D2571122
fb-gh-sync-id: 62be03ebc4353d6f6318c9765079b87b07483be2
Summary: public
Kill `RCTPerfStats` and introduce the new `RCTPerfMonitor`, including memory
usage, JSC heap size, number of RN views in screen, FPS (both on UI and JS threads)
and more to come.
It removes all the previous traces that were previous spread across the bridge
and the dev menu and moves everything to be more contained, so the whole thing
can be safely striped in production.
Reviewed By: nicklockwood
Differential Revision: D2575158
fb-gh-sync-id: 6a6d0c4422adbddeeefddd32ec3409a7095ff2a9
Nick Lockwood
Tadeu Zagallo
Martin Kralik
tantan
Dan Witte
Justin Spahr-Summers
Christopher Dro
Milen Dzhumerov
Pieter De Baets
Ryan Olson
Natthu Bharambe
Bhuwan Khattar
Pawel Sienkowski